Question and answer-XuZhou Ruili new material Co.,Ltd

Thermal anti adhesive protective film

Thermal anti adhesive protective film is a functional thin film material that can significantly reduce or even eliminate its viscosity by heating, thereby achieving no residual adhesive and no damage peeling.Its core lies in a "thermal response" mechanism. Simply put, before heating, it can provide sufficient adhesion to fix and protect the workpiece, just like a regular protective film; After the process is completed, simply heat it to a specific temperature, and the viscosity will sharply decrease (from a few hundred grams of adhesive force to negligible), making it easy and clean to peel off.1、 Core principle: Two mainstream technological routesThere are two main technologies for achieving this "thermal anti sticking" effect, which are currently applied in the market:Foaming type: using microsphere expansion to break the bondThe adhesive layer of this protective film is dispersed with tiny thermal expansion microspheres. After heating, the microspheres rapidly expand and increase in volume, disrupting the continuity of the adhesive layer and causing a sharp decrease in the contact area between the adhesive layer and the surface of the object being adhered, resulting in loss of adhesion.Key indicators: Heating expansion to lose viscosity usually takes only 10 seconds to 5 minutes, depending on the heating temperature and the formula design of the protective film.Peeling effect: It can achieve "automatic peeling", that is, after heating, the adhesive film will automatically arch or fall off from the surface of the workpiece due to the loss of viscosity, greatly improving efficiency.Material phase change type: using special polymer materialsThis is a relatively new technology that does not use foaming agents. It is achieved by adding a specific proportion of liquid crystal material (such as 5% -15% of the total weight) to the acrylic resin adhesive chanism of action: At room temperature, the liquid crystal molecules in the adhesive layer maintain an ordered state, providing high viscosity; After heating, the liquid crystal molecular structure undergoes a thermally induced phase transition, breaking the molecular arrangement of the adhesive and resulting in a significant decrease in its macroscopic adhesion.Advantage: This design can avoid the residual glue problem that may exist in traditional heat reducing films and improve the reliability of peeling.2、 Key characteristics and important parametersWhen choosing a thermal anti adhesive protective film, the main focus is on the following core parameters:Typical numerical range of parameters/explanation of impact and selection suggestionsPeel off temperature low temperature: 90-100 ° CMedium temperature: 120-130 ° CHigh temperature: The core indicator selected is 140-180 ° C. It must be higher than the process temperature during processing, but it cannot be too high to avoid damaging the workpiece that is not heat-resistant.Initial viscosity low viscosity (~200g/25mm)Medium viscosity (~400g/25mm)High viscosity (~700-1500g/25mm) is selected based on the weight of the workpiece and fixing requirements. Excessive adhesion may cause difficulty in peeling off after processing, while insufficient adhesion may prevent firm fixation.After heating, the viscosity usually drops to<10g/25mm, or even lower to 0.02N/20mm, which is the key to evaluating the difficulty of peeling. The smaller the value, the easier the peeling and the lower the risk of damage to the workpiece.The common substrate and thickness are PET (polyester film), as well as high-temperature resistant materials such as PI. The total thickness is usually between 50 μ m and 115 μ m. PET has good comprehensive performance and low cost; PI has better heat resistance. Thickness affects flexibility and strength, and needs to be adapted to the surface and processing method of the workpiece.The core advantage of this product is to have no residual adhesive after peeling, but the compatibility between the product and specific materials needs to be verified in application.3、 Main application areasThanks to its heating and anti sticking properties, thermal anti sticking protective films are widely used in precision manufacturing fields that require temporary fixation and protection, especially in the electronics industry:Semiconductors and Microelectronics: Used for fixing and protecting the backside grinding and cutting process of chip wafers. After cutting, heating can easily pick up individual chips (grains) from the tape without damaging the chips or leaving adhesive residue.Passive component manufacturing: used for cutting, positioning, and handling in the manufacturing process of small components such as MLCC (Multi Layer Ceramic Capacitor) and MLCI (Chip Inductor).Optoelectronics and flat panel displays: used for protection during the thinning, grinding, and polishing processes of LCD/TP touch panel glass.New material processing: used as a temporary carrier and protective layer in the transfer printing process of materials such as graphene and carbon nanotubes.Other applications: including but not limited to cutting and grinding of LED chips, precision metal component processing, ceramic substrate cutting, etc

Transformer coil insulation varnish impregnated anti-aging glass fiber cloth tape

Transformer coil insulation varnish impregnated anti-aging glass fiber cloth tape is a high-performance insulation material specially designed for transformer coil insulation, varnish dipping treatment and high temperature environment. Its core value lies in high temperature resistance, excellent insulation performance, high mechanical strength, and good combination with insulating paint in the dipping process to form a stable insulation layer and effectively resist aging.⚙️ Core FeaturesThis type of tape is usually made of high-density alkali free glass fiber cloth as the substrate, coated with high-performance adhesive, and has various excellent characteristics to adapt to the harsh working environment of transformers.Typical numerical values/grades for characteristic descriptionHigh temperature resistance is the foundation for resisting thermal aging, as it can work at high temperatures for a long time. Long term: 150 ℃ -200 ℃; Short term: 260 ℃ -285 ℃.Electrical insulation provides high dielectric strength, ensuring electrical safety and preventing short circuits. Breakdown voltage:>22 MV/m.High mechanical strength, tensile strength, tear resistance, wear resistance, and can provide strong mechanical protection. Tensile strength:>360 N/25mm.Chemical/weather resistance, oil resistance, solvent resistance, UV resistance, and moisture and heat resistance ensure stable performance of the tape in environments such as transformer oil. Good oil resistance, solvent resistance, and flame retardancy.The immersion absorption performance effectively absorbs electrical insulation paint, and after curing, forms a solid whole with the coil. Resin has good absorbency.Key heat resistance levelTo ensure precise selection, insulation materials follow a unified heat resistance level standard based on their long-term operating temperature:Grade B: The maximum allowable temperature is 130 ℃.F level: The maximum allowable temperature is 155 ℃.H-level: The maximum allowable temperature is 180 ℃.Grade C or above: The maximum allowable temperature can reach 220 ℃ or higher.Type and selectionAccording to different materials and processes, there are mainly three types:Characteristics: Pressure Sensitive Tape, Pre Impregnated Cloth, Varnished Glass ClothCore process: Apply pressure-sensitive adhesive and semi cured B-stage resin onto the finished glass cloth, cure after heating, impregnate with specific insulation paint, and then dryThe main advantages are immediate use, convenient and fast; Integration after high viscosity, tensile strength, and aging resistance curing; Excellent electromechanical performance and high cost-effectiveness in heat and moisture resistance; Excellent performance in specific environments (such as oil immersion)Typical applications include lead wire wrapping, outer layer fixation, high-temperature shielding, dry-type transformer foil wound coil interlayer insulation, motor and electrical wrapping gasket, oil immersed transformer coil insulationCommon Model 3M ™ 69, 79； BGF20； Benyida et al. X2453-1 (modified imine) 2432 (alkyd, grade B); 2440 (Polyester, Grade F)Heat resistance level H (~200 ℃), mainly H (~180 ℃), mainly B (~130 ℃) to F (~155 ℃)Selection suggestions and precautionsYou can choose a suitable product based on the following factors:Application scenario: Pre impregnated tape is preferred for interlayer insulation of dry-type transformers; Oil immersed transformer coils are preferred to use alkyd/polyester glass coated cloth.Working temperature: If long-term temperature resistance of 155 ℃ is required, choose F-grade, such as 2440 glass paint cloth; If long-term temperature resistance of 180 ℃ is required, choose H-grade, such as X2453-1 pre impregnated tape or 3M ™ 69, and ensure its certification.Core performance: The key to the dipping process lies in the tape's absorption of insulating paint and its overall integrity after curing; Anti aging is closely related to high temperature resistance, and attention should be paid to the UV resistance and damp heat resistance data provided by the manufacturer; Confirm the dielectric strength of the tape in high voltage situations

Golden Finger Tea Color High Temperature Resistant Insulation Tape

Golden Finger Brown High Temperature Resistant Insulation Tape "is a commonly used professional tape in the field of electronics and electrical engineering. The name you mentioned actually contains several key features, which I will explain in detail and provide recommendations for selection and application.1. Name resolution and core featuresGolden finger: usually refers to the color and application association of adhesive tape. The "brown" color here (amber/brownish yellow) is similar to the color of the "golden fingers" (connector contacts) on the circuit board. This type of tape is commonly used for wrapping PCB boards and circuits, with professional and beautiful colors.High temperature resistance: This is the core performance. Usually refers to the ability to withstand temperatures of 105 ℃, 120 ℃, 130 ℃, or even 150 ℃ for a long time. This is the key difference from ordinary electrical tape.Insulation tape: Basic function, providing electrical insulation protection and preventing short circuits.2. Common substrate typesThis type of tape is usually made of the following materials, which determine its performance:Characteristics of substrate types, common temperature tolerance, main applicationsPolyimide tape is the most common and has excellent performance. Tea colored transparent, high strength, flame retardant, and resistant to chemical solvents. Usually -269 ℃~+260 ℃ wave soldering, reflow soldering shielding protection, high-temperature coil wrapping, gold finger protection.PET (polyester) tape has high mechanical strength, puncture resistance, good electrical insulation, and slightly lower temperature resistance than polyimide. Usually -60 ℃~+130 ℃ transformer and motor coil insulation, circuit board protection.Polytetrafluoroethylene tape has top-notch performance, resistance to extremely high and low temperatures, excellent non adhesiveness, good dielectric properties, but it is expensive. -Special occasions requiring anti sticking and anti-corrosion measures in ultra-high temperature environments ranging from 200 ℃ to+260 ℃.Glass cloth tape is made of glass fiber cloth as the substrate and coated with high-temperature resistant silicone gel. Extremely high mechanical strength and wear resistance. Usually up to 180 ℃~200 ℃, cable bundling, high-temperature sealing, thermal insulation protection, suitable for environments with mechanical friction.Conclusion: The "golden finger brown heat-resistant insulation tape" you are looking for is highly likely to refer to polyimide tape, which perfectly fits the description of "brown color, high temperature resistance, and high insulation".3. Key selection parametersWhen making a purchase, please pay attention to the following indicators:Temperature resistance level: Confirm long-term operating temperature and short-term peak temperature.Thickness: Common examples include 0.055mm, 0.075mm, etc. The thinner the thickness, the better the adhesion, and the thicker the thickness, the stronger the mechanical protection.Adhesive force: Ensure sufficient adhesion at high temperatures, but leave no residue after tearing (especially for gold finger protection).Dielectric strength: a quantitative indicator of insulation capacity, measured in kV/mm, with higher values indicating better performance.Flame retardant rating: such as UL 94 V-0, is important for situations with high safety requirements.Brand and certification: Well known brands (such as 3M, Nitto, Tesa, Saint Gobain, domestic Jinghua, etc.) have more stable quality, check if they have UL, CSA and other certifications.4. Main application scenariosElectronic manufacturing:Wave soldering/reflow soldering shielding: protects gold fingers, connectors, and other parts from soldering.Temporary protection and insulation of PCB board.Electrical insulation:Interlayer insulation and bundling of transformers, inductors, and motor windings.Binding and insulation repair of high-temperature wires and cables.Protection and identification:Protection of components in high temperature environments.Color identification of the route (brown is one of the commonly used colors).5. Purchase and usage suggestionsPurchase channels:Industrial e-commerce: professional industrial sellers on Alibaba (1688), Taobao/Tmall.Electronic component mall: Dejie Electronics, Maoze Electronics, Yunhan Xincheng, etc.Offline hardware and electrical markets or tape specialty stores.Usage tips:Surface cleaning: Before pasting, ensure that the veneer is dry, oil-free, and dust-free.Proper stretching: Slight stretching during wrapping can make the tape wrap tighter.Testing residual adhesive: Before using it on precision parts (such as gold fingers), conduct a small area test to ensure that it is easy to tear off and has no residual adhesive after high temperature.Summary: What you may need is brown (amber) polyimide high-temperature insulation tape. When purchasing, please choose the appropriate product specifications and brand based on your specific temperature tolerance, size requirements, and budget.

Aviation honeycomb sandwich epoxy film adhesive

Aviation honeycomb sandwich epoxy adhesive film "is a high-tech composite material. Simply put, it is like an ultra high strength" industrial double-sided adhesive ", specially used to firmly bond the skin of an aircraft (such as carbon fiber board) and the honeycomb core material inside, forming what we often call a" sandwich "structure. This structure is both light and strong, widely used in components such as aircraft wings, radar covers, and floors.At present, the mainstream products in the market are mainly divided into two camps: international and domestic, each with its own characteristics. For your convenience in comparison, I have compiled a table:✈️ Main product comparisonProduct Model/Series Manufacturer/Source Core Features Typical Application Scenarios3M ™ AF 163-2 is a classic product widely used in the international aviation field by 3M Company (International). High toughness, good peel strength, and can be cured at medium temperatures (about 120 ° C). There are multiple models to choose from. Adhesive bonding of metals, composite materials, and honeycomb structures, suitable for aircraft components, engine parts, etc.SY-24C/SY-24C-300 is a high-performance product mainstream in China, developed by AVIC Beijing Institute of Aeronautical Materials. High strength and good toughness, when used in conjunction with SY-D9 primer, can enhance corrosion resistance. The SY-24C-300 model has excellent dielectric properties and is particularly suitable for components such as radar covers that require wave transmission. Suitable for manufacturing honeycomb sandwich structures for helicopter fuselage floors, partitions, and onboard radar covers.J-97 foam adhesive film is a special type of foam adhesive film developed by the Petrochemical Research Institute of Heilongjiang Academy of Sciences. It expands and fills gaps during curing, and is mainly used for splicing, local reinforcement, and edge sealing between honeycomb corematerials. Used in conjunction with J-95 and other structural adhesive films for the manufacturing of honeycomb sandwich structural components in civil aircraft.The SY series (such as SY-14) of AVIC Beijing Institute of Aeronautical Materials is a large family. In addition to the above-mentioned products, there is also SY-14, which can be used for a long time at higher temperatures (about 178 ° C), with high strength and good aging resistance. Suitable for aircraft components with higher operating temperatures, such as flaps.💡 Key considerationsIn practical selection and application, there are several key points that need special attention:Selection points: The choice of adhesive film mainly depends on the curing temperature (matching with the production process), mechanical properties (such as shear and peel strength), and surface density (i.e. thickness).Process matching: The adhesive film is usually not used in isolation and needs to be matched with specialized base adhesive (such as SY-D9 with SY-24C), foam adhesive (such as J-97), etc. to form a complete bonding system.Application environment: Different adhesive films have different long-term use temperature ranges. For example, SY-24C can reach -5570 ° C, while SY-14 can reach -55175 ° C, which needs to be selected according to the actual working environment of the component.Surface treatment: To achieve a strong and durable bond, cleaning and treatment of the bonded surface (such as degreasing, anodizing, etc.) are crucial

What is the thickness of Ruili polyimide tape?

The thickness options for Ruili polyimide tape (commonly known as "gold finger tape") are quite extensive, primarily ranging from a total thickness of 0.03mm to 0.15mm. Specifically, it can be further categorized into the following common grades:Common total thickness specifications (substrate + adhesive layer)Ultra-thin type:0.03mm - 0.04mm: Extremely thin, suitable for precision masking where space and flexibility are highly critical, such as fine circuitry or micro-component protection.Standard universal type:0.05mm - 0.06mm: This is the most commonly used and best-selling specification. It strikes an optimal balance between high temperature resistance, puncture resistance, flexibility, and ease of operation, and is widely used in electronic and electrical insulation, high temperature painting/spraying masking, lithium battery manufacturing, and more.Enhanced thickening type:0.07mm - 0.09mm: Provides better mechanical strength, insulation performance, and solvent resistance, suitable for harsher environments or scenarios requiring multiple masking.0.10mm - 0.15mm: This type of tape is classified as heavy-duty, boasting excellent puncture resistance, wear resistance, and cushioning properties. It is commonly used for insulation in high-power motors and transformers, or in situations where extremely strong physical protection is required.Key concept: composition of total thicknessThe total thickness of polyimide tape is composed of two parts: the "substrate (polyimide film)" and the "adhesive (usually silicone or acrylic adhesive)".Substrate thickness: Common thicknesses of polyimide film substrates include 0.0125mm, 0.025mm, 0.0375mm, 0.05mm, 0.075mm, etc.Adhesive layer thickness: Depending on the type of adhesive and coating process, the thickness of the adhesive layer ranges from a few tenths of a millimeter to several millimeters.Total thickness = base material thickness + (adhesive layer thickness × 2, if it is double-sided adhesive).Main series and typical thicknesses of Ruili polyimide tapeThe Ruili product line is typically categorized by color and function, with each series having its own featured thickness:Amber (tea) series:It is the most common, with high temperature resistance and excellent performance (typically -40°C ~ 260°C).Typical thicknesses: 0.05mm, 0.06mm, 0.07mm, 0.08mm, 0.10mmBlack series: Typically featuring enhanced weather resistance, shading properties, and UV resistance.Typical thicknesses: 0.06mm, 0.07mm, 0.08mmWhite series: commonly used in situations requiring color identification or reflection.Typical thickness: 0.05mm, 0.06mmSpecial Note: For the specific application of plasma spray masking, it is recommended to use products with a thickness ranging from 0.06mm to 0.08mm. This thickness range offers sufficient resistance to particle impact and ablation, while ensuring good fit and easy peelability.

Epoxy thermoplastic composite adhesive film

Transparent PET resistor carrier tape for electronic components

📊 Technical parameters and performance indicatorsTypical indicators/range description of parameter categoriesThe substrate material PET (polyester) has high transparency and good mechanical strength, making it a common choice in the mid to low end market.Anti static performance, surface resistivitytensix∼tenelevenΩ/□tensix∼10 elevenThe lower the value of Ω/□, the better the conductivity, which can effectively dissipate static electricity and protect precision components.The standard specification EIA-481-C/IEC 60286-3 is a globally recognized industry standard that ensures interchangeability between carrier tapes and automatic mounting equipment.Operating Temperatureeighty-five∘C∼one hundred∘Ceighty-five∘C∼100 ∘C is suitable for general welding processes, but its performance may decrease in high temperature environments.Pocket size tolerance±zero point zero fivemm∼±zero point onemmThe precise tolerance of ± 0.05mm to ± 0.1mm can effectively prevent the components from shaking or flipping in the pocket.Peel force of cover tapetwenty∼eightygfThe value of 20-80gf needs to be precisely controlled. If it is too small, the seal will not be tight, and if it is too large, it will cause the components to be carried away.warpage≤onemm/two hundred and fiftymmExcessive bending of ≤ 1mm/250mm will affect the smooth feeding of the automatic surface mounting machine.The standard widths are 8, 12, 16, 24, 32, 44, 56, 72, 88, and 104mm to accommodate components of different sizes, with the most commonly used being 8mm and 12mm.Pocket depth (standard) typically ≤ 2mm is mainly used for packaging thin components such as chip resistors, capacitors, etc.Pocket depth (deep cavity) can reach 15mm or more. Some suppliers can theoretically support deeper cavities by optimizing their mon types of anti-static coatings: Transparent PET is usually coated with anti-static agents to achieve anti-static performance.Performance statement: The above is the typical performance of PET material under ideal or standard processes. The specific product quality and long-term stability highly depend on the manufacturer's process control and quality control system.⚖️ Transparent vs. Black: Comparison of Carrier Tape Selectioncharacteristic 👍 Transparent PET carrier tape 🖤 Black carrier tapeMaterial PET or PC PS+conductive carbon powder and other anti-static materialsCore advantages: Optical detection: Transparent properties facilitate visual system recognition of components. Light blocking properties: effectively block ultraviolet rays and protect photosensitive componentsThe cost is moderate, but the later coating may be slightly higher and more suitable. The material itself can meet the ESD requirementsDisadvantages: Insufficient light shielding, anti-static performance depends on coating opacity, unable to perform optical detectionApplicable scenarios include LED packaging, small-sized transistors, semiconductor devices sensitive to ESD for sample testing, and high-speed surface mount technologySelection suggestion:Prioritize transparent PET carrier tape: Your production line or testing equipment relies on optical inspection.Consider black carrier tape: Your components are sensitive to electrostatic discharge (ESD) or ultraviolet radiation, such as some ICs and optoelectronic devices.📐 Common specifications and reference for matching cover strapsThe common sizes of download tapes and matching cover tapes can serve as important references when customizing with suppliersCarrier tape width commonly used matching cover tape width typical application components8mm 5.4mm small resistor, capacitor LED12mm 9.3mm slightly larger resistor, capacitor array, small IC16mm 13.3mm transistor, microswitch24mm 21.3mm medium size IC, inductor, connectorKey tip: The cover tape is divided into heat sealed and self-adhesive types, and its material (commonly PET), thickness (such as 0.06mm), and peel strength are the core of evaluating compatibility. It is necessary to confirm its compatibility with the carrier tape material.📋 Selection and Performance Testing ChecklistTo ensure that the selected carrier tape meets the requirements, it is recommended to request the following information from the supplier (or conduct self testing on the sample):📐 Dimensional accuracy: Confirm whether the pocket size (length, width, depth) accuracy meets the standard.⚡ Static protection: Confirm whether the surface resistivity istensix∼tenelevenΩ/□tensix∼10 elevenWithin the target range of Ω/□, inquire about the coating type.⚙️ Mechanical performance: Request warpage testing data and confirm material toughness.🌡️ Temperature resistance: Clearly define the maximum continuous operating temperature (such as 85 ° C) to avoid damage to components during transportation or preheating.🤝 Compatibility: Combined with the cover tape to test the peeling force (within the range of 20-80gf), and request a formal product testing report🤔 Frequently Asked Questions Q&AWhy is transparent PET tape a common choice for resistor packaging?This is because it combines cost-effectiveness and practicality. The mechanical strength of PET material is sufficient to protect the resistance, and its transparency makes it easy for optical detection equipment to identify components. At the same time, its cost is lower than high-end PC materials, making it cost-effective.2. How to understand the standard number of the carrier tape (such as EIA-481-C)?EIA-481-C is an industry standard published by the Electronic Industries Alliance (EIA), which specifies the dimensional tolerances, mechanical strength, and performance requirements for tapes and reels. The size and performance of the carrier tape produced according to this standard are uniform worldwide, ensuring smooth use on any surface mount machine that meets this standard.What does the "pocket depth" of the carrier tape refer to? What impact does it have on selection?Pocket depth "refers to the vertical height of the groove on the carrier tape used to accommodate electronic components. When selecting, it is necessary to ensure that the pocket depth is greater than the maximum thickness of the component, and usually a certain margin (such as 0.2-0.5mm) needs to be reserved to accommodate tolerances. For thicker components, it is recommended to directly choose materials with higher mechanical strength such as PC.If I only need a small amount of samples for testing, can I purchase them?Okay. Most carrier manufacturers provide sample customization services. You can directly contact the target manufacturer and provide the required resistor samples or detailed drawings for packaging. They will design and produce a small number of samples for you. However, it should be noted that the mold cost and unit price for small batch customization are usually higher.Is the anti-static performance of transparent PET tape permanent?This depends on its anti-static treatment method.Coating type: achieved by surface coating with anti-static agents, performance may deteriorate over time, friction, or moisture.Intrinsic type: Anti static components are added inside the PET material, and its anti-static performance is permanent. During procurement, suppliers can be asked specifically about the methods they use.Why do some transparent PET tapes exhibit slight colors (such as light blue or light green)?This is due to the addition of specific anti-static agents or additives to the PET substrate. In order to achieve permanent anti-static performance, some manufacturers may add special conductive polymers, which may have a very slight color tone, but this does not mean that their quality is problematic

Acrylic foam double-sided tape

Acrylic foam double-sided tape "is a very important category of industrial tape, which combines high-performance acrylic adhesive with foam substrate to create a bonding solution with excellent comprehensive performance. It is irreplaceable by traditional liquid adhesives and ordinary tape in many fields.Below is a comprehensive analysis of its structure, characteristics, types, applications, and selection points.1、 Core Structure and Working Principle: A Exquisite 'Sandwich'Foam substrate (intermediate layer):Material: Usually polyurethane foam, polyethylene foam, or acrylic foam. Each material varies in softness, density, temperature resistance, and solvent resistance.Core functions:Buffer and shock absorption: absorb impact and vibration energy, protect adhesive components.Filling gaps: capable of filling small unevenness, gaps or tolerances between two adhesive surfaces, achieving full surface contact, which is not possible with hard tape (such as PET tape).Stress dispersion: Uniformly dispersing the adhesive force over a larger area, reducing stress concentration caused by thermal expansion, contraction, or deformation, and improving long-term reliability.Sealing: It has a certain degree of dust, moisture, and sound insulation effects.Adhesive layer (upper and lower layers):Material: High performance acrylic pressure-sensitive adhesive.Core advantages:Excellent weather resistance: resistant to ultraviolet rays, oxygen, and moisture, long-term outdoor use (such as cars, outdoor signs) will not easily yellow, powder, or lose stickiness, and the lifespan can reach several years or even more than ten years.Excellent adhesion: Strong creep resistance under sustained stress, not easy to slip or detach.Wide material adaptability: It has good initial and final adhesion to various materials such as metal, plastic, glass, sprayed surfaces, composite materials, etc.Wide temperature range: The working temperature range can usually reach -40 ℃ to 90 ℃ or even higher.Release paper/film (protective layer): High weight release paper is usually used, which is convenient for manual or die-cutting processing.2、 Main features and advantages (compared to traditional tape/glue)Excellent comprehensive performance: balancing high adhesive strength, elastic cushioning, and long-term durability.Easy and efficient construction: tear and paste immediately, no need for mixing or curing, clean and odorless, can greatly shorten assembly time and improve production efficiency.Solving complex problems: particularly adept at handling bonding scenarios with uneven surfaces, large thermal expansion differences, and vibrations.Beautiful appearance: The tape thickness is uniform, and it looks neat and tidy after installation, achieving a "seamless" installation.3、 Main types and application areasAccording to the performance focus of foam substrates and adhesives, they are mainly divided into the following categories:Universal acrylic foam tape:Features: Balancing viscosity, thickness, and cost. Foam has a medium density and good compression resilience.Application: The most common. Used for indoor and outdoor signage installation (such as acrylic letters, metal letters), decorative strip fixation, lightweight building material assembly, and household appliance bonding.VHB ® (Very High Bond) tape (a representative product of 3M, which has become synonymous with the industry):Features: Ultra high strength acrylic foam tape. Its high bonding strength can directly replace mechanical fastening methods such as rivets, screws, and spot welding in many applications, achieving "structural bonding".Applications: fixing metal panels for building curtain walls, assembling elevator cars, assembling refrigerated truck cars, bonding heavy machinery equipment panels, and installing interior parts for rail transit.Ultra thin/medium thick foam tape:Features: Thickness between 0.2mm and 1.0mm, used in situations where small gaps need to be filled and a smooth appearance is required.Application: Internal components of mobile phones/electronic products (fixing batteries, buffering FPC/PCB, filling gaps for dust prevention), film switches, medical device assembly.Flame retardant foam tape:Features: The foam substrate and adhesive have undergone special treatment and meet the UL94 V-0 flame retardant rating.Application: Places with strict fire prevention requirements, such as elevator interiors, public transportation interiors, and electrical cabinets.Thermal/conductive foam tape:Thermal conductive type: Adding thermal conductive particles to the adhesive layer or foam, used in situations that require heat dissipation and shock absorption fixation, such as the installation of certain LED modules and power devices.Conductive type: Provides electromagnetic shielding (EMI/RFI) function for grounding and shielding of electronic device enclosures.4、 How to choose and use key pointsClarify the bonding object: the most important step. Confirm that the surface energy of two materials (such as painted metal glass and plastic wall) directly affects the bonding effect.Evaluate the usage environment:Indoor or outdoor? Outdoor use must choose acrylic adhesive with excellent weather resistance.Are there any drastic temperature changes, ultraviolet radiation, humidity, or chemicals present?Is there continuous vibration or impact?Determine key performance requirements:How strong adhesive force is needed? Lightweight decoration or heavy-duty structure?How much gap do I need to fill? Select the appropriate thickness of foam based on the unevenness or tolerance of the bonding surface.Do you need any special features? Such as flame retardancy, thermal conductivity, and electrical conductivity.Surface treatment: crucial! Ensure that the adhered surface is clean, dry, free of oil, dust, and rust. The best cleaning effect is achieved using isopropanol (IPA).Construction pressure and time: After pasting, sufficient pressure (such as compacting with a roller) should be applied to ensure that the tape is in full contact with the surface. The adhesive strength will reach its maximum value over time (usually 24-72 hours).Test first: Before large-scale application, it is necessary to conduct small sample testing in real materials and environments to verify long-term reliability.5、 The core difference from PET double-sided tapeCharacteristics: Acrylic foam double-sided tape, PET double-sided tapeBase material core elastic foam (three-dimensional structure) hard polyester film (two-dimensional plane)Main functions include filling, buffering, shock absorption, and sealing, while also achieving high initial adhesion and fast bonding on a flat surface with high-strength bonding, and ensuring dimensional stabilityProficient in handling uneven surfaces, tolerances, and shock absorption scenarios, skilled in precise fitting and fixing of smooth and flat surfacesTypical thickness is relatively thick (0.2mm-3.0mm or more) and very thin (0.025mm-0.2mm)Soft to the touch, compressible and hard, incompressibleSummary: PET double-sided tape is like a "tough film", while acrylic foam tape is a "tough sponge". The former is suitable for precise and smooth "surface contact", while the latter is suitable for "body contact" in complex working conditions.summaryAcrylic foam double-sided tape is a revolutionary engineering adhesive material that solves many problems of traditional mechanical fixation and liquid adhesives in terms of shock absorption, sealing, stress management, and construction convenience through its unique "combination of rigidity and flexibility" structure. From the internal fixation of high-end smartphones to the installation of curtain walls in skyscrapers, itspresence is everywhere.

Polyimide composite tape

Polyimide composite tape. This is an indispensable "engineering grade" high-performance tape in extreme environments and high-end applications.Core concept: Why do we need 'composite'?Ordinary polyimide tape (such as commonly known as "gold finger tape" or Kapton tape) is usually a single-layer polyimide film+single-sided organic silicone. And "composite" tape is a multifunctional and integrated solution formed by combining polyimide film with other functional materials (such as foam, fiberglass cloth, thermal conductive materials, other adhesive layers, etc.) through precision coating or bonding processes.Core concept: Combining the excellent inherent properties of polyimide (high temperature resistance, high insulation, high strength) with the complementary properties of other materials (buffering, filling, thickening, thermal conductivity) to solve complex application problems that cannot be solved by a single material.Core advantages of polyimide (PI) film (composite basis)Ultimate high temperature resistance: Long term use temperature can reach over 260 ° C, short-term can withstand high temperatures above 400 ° C, and physical properties are stable at this temperature, without melting or dripping.Excellent electrical performance: high dielectric strength, top-notch insulation material, excellent corona resistance.Excellent mechanical properties: high tensile strength, good toughness, bending resistance, and excellent dimensional stability (low coefficient of thermal expansion).Chemical stability: resistant to most organic solvents, oils, and acids.Flame retardancy: typically meets UL 94 V-0 mon Composite Structures and ApplicationsThe following are several typical polyimide composite tape structures:1. PI film+foam+adhesive layerThis is one of the most common composite structures, typically consisting of three or more layers: PI film (surface material)+adhesive+foam (intermediate layer)+adhesive+release paper.Features and advantages:PI film: provides high-strength "skin", responsible for high temperature resistance, insulation, puncture resistance, and solvent resistance.Foam (commonly used silicone foam, polyimide foam, or acrylic foam): provides cushioning and shock absorption, fills gaps, absorbs stress, compensates for tolerances, and improves sealing performance.Double sided adhesive tape: achieves firm bonding.Application Scenario:New energy vehicle battery pack: The insulation, buffering, and bonding between battery cells require insulation, fire resistance, and long-term earthquake resistance.High end motors/transformers: Insulation and fixation between coil windings must withstand high temperatures and electromagnetic vibrations.Consumer electronics: providing insulation, buffering, and certain thermal conductivity gaskets for heating elements (such as CPUs) in limited spaces.Aerospace equipment: The installation of instruments and meters requires shock absorption, insulation, and resistance to extreme temperature cycles.2. PI film+reinforcement material (such as fiberglass cloth)Composite PI film with glass fiber cloth to form an ultra-high strength composite material.Features and advantages:PI film: provides insulation and temperature resistant substrate.Fiberglass cloth: greatly enhances mechanical strength, tear resistance, dimensional stability, and puncture resistance.Application Scenario:Slot insulation and phase to phase insulation for heavy-duty motors and generators.Cable bundling that requires extremely high mechanical protection and insulation.PCB board edge reinforcement.3. PI film+thermal conductive materialComposite thermal conductive silicone or thermal phase change material on PI film to make insulating thermal conductive gasket.Features and advantages:PI film: provides electrical insulation barrier, which is a critical safety requirement.Thermal conduction layer: Conducts heat from heating elements such as IGBTs and power MOSFETs to the heat sink.Application Scenario:Power electronic module: Achieve efficient heat dissipation while ensuring high voltage insulation.Insulation and heat dissipation of heating elements in high-frequency communication equipment.4. Reinforced composite of double-sided/single-sided tapeEven as a tape, its structure may be composite. For example:Back material composite: Using PI film as the substrate for double-sided tape to provide high temperature resistance.Adhesive layer composite: using a double-layer adhesive system, such as one layer of high initial adhesive and one layer of high holding adhesive, to optimize performance.The core value brought by "composite"Functional integration: A single material simultaneously solves multiple problems such as insulation, buffering, bonding, sealing, and thermal conductivity, simplifying design and assembly.Reliability improvement: Designed for specific harsh working conditions (high temperature+vibration+high voltage), the system reliability far exceeds simply stacking multiple single materials.Space optimization: Achieve more complex functions with thinner overall thickness, saving valuable equipment space.Process simplification: reduce assembly steps, lower labor costs, and improve production efficiency.How to choose polyimide composite tape? ——Key considerationsClarify the primary and secondary contradictions: What is the main threat in your application environment? Is it high temperature, high voltage insulation, mechanical vibration, or heat dissipation? This determines the focus of the composite structure.Structural decomposition: Request specific structural layer diagrams from suppliers to understand the material, thickness, and function of each layer.PI film thickness: commonly 12.5 μ m, 25 μ m, 50 μ m, etc., determine insulation and mechanical strength.The material and density of the intermediate layer, such as the foam material (silicone, PI foam) and density (kg/m ³), directly affect the buffering and sealing performance.Adhesive type: high temperature resistant organic silicone (>200 ° C) or high-performance acrylic adhesive (lower temperature resistance but stronger adhesion)?Key performance parameters:Temperature resistance level: Long term/Short term.Flame retardant rating: UL 94 rating.Dielectric strength: kV/pression deformation: For structures with foam, this is important and affects long-term sealing performance.Thermal conductivity: For thermal conductive products.Environmental tolerance: Is it necessary to be resistant to cold and hot shock, moisture and heat aging, specific chemicals, or UV?Certification and Compliance: Material certification is crucial in fields such as automotive (such as USCAR), aviation, and rail transit.Main brands and marketsInternational leaders:3M: The product system is very comprehensive, such as a series that combines PI film and foam.Rogers: Leading in technology for high-temperature foam and composite materials.Tesa, Nitto, Saint Gobain, and others all have corresponding high-performance composite product lines.Excellent domestic suppliers:With the development of new energy and high-end manufacturing, many domestic enterprises are able to produce high-quality PI composite tapes/gaskets, especially in the field of new energy vehicle battery pack applications, where the process of localization substitution is fast.summaryPolyimide composite tape is a smart crystallization of materials engineering. It is no longer a simple adhesive or insulation material, but a systematic solution designed to cope with extreme multi physics environments. When choosing, it is necessary to start from the system requirements, communicate deeply with the supplier's R&D personnel, provide specific operating parameters, and conduct strict long-term reliability testing to ensure that this high-performance material can truly realize its "1+1>2" composite value.

Teflon double-sided tape

Teflon double-sided tape. This is a very unique and high-performance industrial adhesive material that combines the excellent surface properties and double-sided bonding function of polytetrafluoroethylene (PTFE).1、 Core Structure and Material AnalysisThis type of tape can be seen as a "sandwich" structure:Core substrate (intermediate layer): Pure PTFE film or glass fiber reinforced PTFE composite material.The characteristics of Teflon: This is the core value of adhesive tape.Extremely low surface energy: "Non sticky" is extremely strong, and almost all substances are difficult to firmly adhere to its surface.Excellent temperature resistance: The long-term working temperature range is -200 ° C to+260 ° C, and the short-term can reach over 300 ° C.Excellent chemical inertness: resistant to corrosion from almost all strong acids, alkalis, and organic solvents.Excellent insulation: high dielectric strength.Extremely low friction coefficient: very lubricating.Two side adhesive layer: a special pressure-sensitive adhesive coated on both sides of the PTFE substrate. This is a technical key, as conventional adhesives are difficult to adhere to Teflon.Adhesive type: usually high temperature resistant silicone pressure-sensitive adhesive or fluorosilicone pressure-sensitive adhesive. They have undergone special treatment to form effective adhesion with PTFE surfaces, while also possessing excellent temperature resistance and chemical stability on their own.Release layer: Protect the release paper or release film on both sides of the adhesive surface.2、 Core features and advantagesCombining "non stickiness" and "strong stickiness": this is its greatest contradictory charm. The tape itself can strongly adhere to the surfaces of two objects (such as machine tables and molds), while its PTFE working surface provides long-lasting non stick and easy to clean properties.Ultra wide temperature resistance range: able to withstand extreme temperature environments ranging from deep cold to extremely high heat, with stable performance.Excellent chemical resistance: suitable for harsh environments with chemical splashes or repeated wiping with cleaning agents.Excellent electrical performance: suitable for electrical applications that require insulation and high temperature resistance.Wear resistance and durability: Glass fiber reinforced PTFE substrate has high mechanical strength and service life.3、 Main application areas (solving specific problems)Teflon double-sided tape is commonly used in special scenarios where both secure installation and non stick, high-temperature resistant, or easy to clean surface properties are required.Heat sealing, welding and packaging machinery:Sealing machine heat sealing tape: glued to the heating plate, using its non adhesiveness to prevent packaging materials (such as plastic bags) from melting and sticking to the machine, is the most classic application.Plastic welding equipment: a tool surface used for ultrasonic welding and hot plate welding.Mold and composite material processing:Release layer: affixed to the surface of the mold as a permanent or easily replaceable release layer, used for molding composite materials such as epoxy resin and polyurethane, greatly facilitating demolding.Protective layer: protects expensive mold surfaces from scratches and chemical corrosion.Food and chemical equipment:Stick to the inner walls of conveyor belts, workbenches, or hoppers to prevent sugar, grease, chemical raw materials, etc. from adhering and facilitate cleaning.Sealing gasket for reactor or pipeline interface (suitable adhesive type should be selected).Electronic and electrical manufacturing:As an insulating and non stick cushion layer in high-frequency welding (such as inductor coils) or high-temperature welding fixtures.Special components that require insulation and chemical resistance for fixation.Laboratory and General Industry:Stick it on the surface of the laboratory and workbench to create a corrosion-resistant and easy to clean workspace.The hot bed surface film of the 3D printer provides good adhesion and is easy to remove the model.4、 Key selection parametersSubstrate type:Pure PTFE film: softer and best non stick.Fiberglass reinforced PTFE: more rigid, wear-resistant, tensile resistant, dimensionally stable, and has high mechanical strength, making it a more common choice.Thickness: The total thickness (including adhesive layer) is usually between 0.08mm and 0.3mm. The thicker, the better the filling gap and buffering ability.Adhesive type:Silicone pressure-sensitive adhesive: the most common, with a wide range of high and low temperature resistance and good flexibility.Fluorosilicone pressure-sensitive adhesive: It has better chemical resistance and high temperature resistance, especially in non-polar solvents, and is more expensive.Temperature resistance level: Clearly define the long-term operating temperature and short-term peak temperature.Adhesive force: Confirm its peel strength to the target surface (such as stainless steel, aluminum, plastic).Certification: For food or medical related applications, it is necessary to confirm whether there are FDA, LFGB and other food contact safety certifications.5、 Common brands and precautions in the marketFamous brand:3M: For example, 3M 5490, 3M 5590H and other series are industry high standards.Saint Gobain, Desha, Nitto Denko, and others also have corresponding product lines.Domestic/professional brands: There are also multiple manufacturers in China producing products with high cost-effectiveness, and their performance needs to be carefully verified.Precautions for use:Surface treatment: Before pasting, ensure that the adhered surface is absolutely clean, dry, and free of grease, otherwise it will seriously affect the bonding effect and durability.Apply sufficient pressure: After pasting, use a roller or fixture to apply solid and uniform pressure to ensure sufficient contact.Bonding temperature: It is recommended to stick some products at room temperature (above 21 ° C) for optimal initial adhesion.Maintenance time: After bonding, it takes 24-72 hours to reach the maximum bonding force and avoid bearing the maximum load during this period.Removal: Designed for permanent or semi permanent bonding, removal is very difficult and often results in adhesive residue or damage to the substrate.summaryTeflon double-sided tape is an engineering material designed to solve special contradictions under extreme working conditions: it provides a "sticky" body and a "non stick" working surface.When your application scenario requires both:Firmly install a component onto the equipmentAnd the surface of this component must be resistant to high temperatures, anti sticking, anti chemical corrosion, and easy to clean

Question and answer

High-temperature resistant green PET insulation tape

High-temperature resistant and flame-retardant glass cloth tape

PET-based double-sided adhesive tape

防静电PI胶带

Teflon double-sided tape

Glass cloth double-sided tape

High temperature resistant glass cloth tape

High viscosity PET double-sided tape

PET transparent high-temperature masking tape

Golden Finger Tea Color High Temperature Resistant Insulation Tape

Polyimide series

Glass cloth tape (Teflon)

PET high-temperature tape (protective film)

Plasma thermal spraying tape

Fire-resistant ceramicized silicone tape

Domestic products replace imported adhesive tapes