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

Lithium battery tape

Lithium battery tape is a special tape used in the production and assembly process of lithium batteries, which plays a key role in ensuring battery performance and safety.🔎 What are the main types of lithium battery tape?There are various types of lithium battery tape, each designed for specific application scenarios and performance requirements:Main application key characteristics of the typeTerminate the tape fixation and protect the end of the battery cell to prevent short circuit, electrolyte resistance, high electrical insulation, strong adhesion, and no residue after peeling offHigh temperature tape is used for processes that require high temperature resistance, such as high-temperature shielding during ear welding, high temperature resistance (PI tape can reach 260 ℃ or above), solvent resistance, corrosion resistance, and electrical insulationWrap, insulate, and protect the positive and negative electrode ear connections with adhesive tape, which is resistant to electrolyte and has excellent heat sealing performance with metal tape and aluminum-plastic film, and is leak proofExpansion tape fixes the core, absorbs external impact forces, and enhances battery safety. It can significantly expand when exposed to electrolyte (up to three times the original thickness in volume), resist impact, and has strong fixationProtective film/blue film covers and protects the battery cells and module shells, providing insulation, wear resistance, puncture resistance, wear resistance, and high adhesionFixing/bundling tape is used to secure multiple battery cells or wiring harnesses during the module/PACK stage. It has high strength (such as fiber tape), high adhesion, good weather resistance, and anti warping performanceEasy to pull adhesive temporarily fixes components such as batteries, making it easy to remove high viscosity, high tensile strength, removable, and residue free adhesive during repair or recycling🛠️ How does tape work from battery cells to modules?Lithium battery tape plays an important role in multiple stages of battery manufacturing.🔋 Internal and external insulation protection of battery cellsWinding fixation: In the battery cell winding process, use termination tape to fix the end to prevent the battery cell from loosening.Ear insulation: After ear welding, wrap the weld seam with ear tape for insulation protection.Internal component protection: Expansion tape is used to absorb external impacts and stabilize the core position.Shell protection: After the square or soft pack battery cells are packaged, a protective film (blue film) will be coated on their surface to provide basic insulation and wear-resistant protection for the battery cells.📦 Battery module and PACK assemblyCell fixing: During module assembly, multiple cells need to be firmly fixed together, and high-strength fiber tape is used for bundling.Insulation and thermal insulation: Insulation or thermal insulation sheets are pasted between battery cells and module casings, and fixed with double-sided tape (such as Desha's flame-retardant double-sided tape).Temporary fixation: Easy to pull glue is often used to temporarily fix components during assembly. Due to its characteristics, it can be removed by stretching when needed, leaving no residue and making it easy to repair and recycle.🧪 Performance core: electrolyte resistance, temperature resistance, insulation and environmental standardsChemical Resistance: The electrolyte inside the battery is highly corrosive, and ordinary tape cannot withstand it. Lithium battery tape must be able to resist long-term immersion of electrolyte, maintain viscosity, not dissolve, and not contaminate the battery.Temperature Resistance: Temperature resistance includes two aspects: one is to adapt to the temperature environment during battery operation, for example, some adhesive tapes used in power batteries need to withstand high temperatures of 125 ℃ for a long time; The second is the high-temperature resistance process in battery manufacturing, such as polyimide (PI) tape, which can withstand temperatures above 260 ℃ for a short period of time and is used for ear welding protection.Electrical Insulation: This is the most basic safety requirement. The tape must have a high dielectric breakdown voltage, effectively isolate current, and prevent internal short circuits. For example, a tape from Desha has a breakdown voltage of up to 14400V, ensuring safety in high voltage environments.Environmental and safety standards: Many tapes comply with environmental directives such as RoHS and halogen-free. In the field of power batteries, it is also required that the tape itself has flame retardancy to comply with relevant safety regulations.Adhesion&Removability: Adhesive tape needs to have suitable adhesion to firmly fix it, but in some applications such as "easy to pull glue", it is also required to be easily peeled off without residue when it needs to be removed, making it easy to repair and recycle✅ How to choose the appropriate lithium battery tape?Clarify application scenarios: Firstly, determine whether the tape is used inside the battery cell or during the battery PACK assembly stage. The core requirements for the tape vary greatly in different scenarios.Focus on core performance: Depending on the application scenario, focus on key indicators such as electrolyte resistance, temperature resistance, electrical insulation strength, and flame retardant rating.Adaptive manufacturing process: The tape needs to adapt to the high-speed automated production line of batteries. Its physical properties such as thickness, viscosity, and stretchability can affect the efficiency and yield of equipment attachment.Confirm environmental and safety compliance: Ensure that the tape meets environmental requirements such as RoHS and halogen-free, and complies with flame retardant safety standards related to power batteries.Assessing supplier capabilities: It is recommended to choose suppliers with systematic certification (such as ISO 9001) and independent research and development capabilities, which can better ensure product quality and supply stability

Electrical insulating tape

Gold Finger High Temperature Resistant Insulation Tape

Gold finger high-temperature resistant insulation tape is a crucial auxiliary material in the field of electronic manufacturing and maintenance. Its core components are polyimide (PI) film and high-temperature resistant silicone pressure-sensitive adhesive.Its core features can be summarized as follows:Excellent high temperature resistance: This is its most prominent feature. Short term tolerance to high temperatures ranging from 260 ℃ to 300 ℃, and long-term use can also remain stable at around 260 ℃. It can also maintain performance at low temperatures of -60 ℃.Reliable electrical insulation: The insulation level reaches H level, which can effectively prevent circuit short circuits and electrical interference.Strong chemical resistance: able to resist the erosion of acids, alkalis, and solvents, protecting the underlying circuits from damage.Excellent "no residue" feature: After high-temperature processing, tearing off the tape will not leave stubborn residue on the protected surface (such as golden fingers).Good physical properties: stretch resistance, friction resistance, tear resistance, can be die cut into various shapes.Anti static characteristics (some models): Some high-end models have anti-static functions, which can protect precision electronic components that are sensitive to static electricity.Color and appearance: usually presented in brown (amber) or golden yellow, semi transparent.Thickness: Very thin, with common specifications of 0.05mm and 0.06mm, able to tightly adhere to precision components.Main application scenariosIts applications are very extensive, mainly concentrated in the following areas:PCB circuit board protection: used in wave soldering and reflow soldering processes to protect the "golden fingers" (gold-plated contacts on the edges of the PCB board) from contamination by soldering or plating solutions. This is also why it is commonly referred to as' golden finger tape '.Insulation of electronic components: used for high-temperature insulation wrapping and fixing of components such as transformers, motors, coils, capacitors, etc.Lithium battery manufacturing: used for fixing and insulating the positive and negative electrode ears during the production process of lithium batteries.Industrial spray coating masking: used for masking protection in spray painting and baking processes that require high temperature baking, and there is no residue after tearing off.R&D and testing: used for temporary fixation and protection during sample preparation and testing processes in the laboratory⚠️ Precautions for use and storageSurface cleaning: Before pasting, it is necessary to ensure that the surface to be pasted is clean, free of oil stains, and dust to ensure the best bonding effect.Remove after cooling: After use in high temperature environments, it should be completely cooled before removing to avoid damaging components or leaving residue due to thermal stress.Avoid repeated use: The adhesive strength of the tape may decrease due to use, and it is not recommended to reuse it.Storage environment: It should be stored in a cool, dry place, away from direct sunlight and high temperature and humidity environment. It is generally recommended to use it up within 6 months after receiving the goods.Pay attention to material compatibility: If the object being pasted contains plasticizers, the adhesion of the tape may be affected. It is best to test it before use

PET brown heat-resistant tape

PET brown high-temperature resistant tape is a single-sided tape made of polyester film as the substrate, coated with high-temperature resistant silicone or acrylic adhesive. It is mainly used for high-temperature shielding and insulation protection in the fields of electronics, electrical appliances, etc.The following is detailed information about the product:Key FeaturesHigh temperature resistance: It can usually work stably in the temperature range of 180 ° C to 220 ° C, with a short-term temperature resistance of up to 260 ° C. Some products claim to be able to withstand 200 ° C for a long time.Core advantages:Clean peeling: After the high-temperature process, it can be peeled off without leaving any adhesive residue, which is one of its main selling points.Electrical insulation: It has good electrical insulation performance.Chemical resistance: able to withstand common acid, alkali, and solvent corrosion.High cost-effectiveness: It can be used as a substitute for higher priced polyimide (PI, commonly known as gold finger) tape within the economic temperature range.Main application scenariosThe application field of this tape is very wide, especially indispensable in the following scenarios:Electronic manufacturing: used for high-temperature shielding protection of printed circuit boards (PCBs) during wave soldering and reflow soldering processes.Lithium battery production: widely used for insulation and fixation in key processes such as electrode ear protection, cell wrapping, pack fixation, and termination of lithium batteries.Surface treatment: Used as masking tape in spraying, baking, and electroplating processes to protect areas that do not require treatment.Other industrial uses: such as interlayer insulation wrapping of transformer coils, fixing of electronic components, etc.Specifications and processesCommon specifications: The standard length is mostly 33 meters per roll, the thickness can range from 0.05mm to 0.15mm, and the width can be customized according to needs. The maximum width of the substrate can reach 1020 millimeters.Manufacturing process: The core is the coating process. Uniformly apply high-temperature resistant pressure-sensitive adhesive (usually silicone) onto the pre treated PET substrate, and then heat cure it in an oven to form a stable adhesive layer.Market Trends and StandardsMarket trend: Driven by the electronics and new energy industries, market demand continues to grow. The industry is developing towards ultra-thin technology to meet the protection needs of high-density and miniaturized electronic components.National standards: Currently, the physical performance testing standards followed by this product may refer to national standards such as GB/T 2792 (peel strength testing method) and GB/T 4852 (initial adhesion testing method).💡 PrecautionsWhen selecting and using, please pay attention to the following points:Distinguishing similar products: The commonly seen "brown tape" in the market may be polyimide (PI) tape or PET tape. PI tape usually has higher temperature resistance (up to 260 ° C in the long term), but the cost is also higher. Be sure to choose according to your process temperature requirements and budget.Selection of rubber series: Silicone series is the mainstream, with high temperature resistance and good chemical resistance; Acrylic adhesive may have better adhesion on certain surfaces or be used for specific applications such as lithium battery pack bundling. Confirm that the adhesive system is compatible with your application environment

Saint-Gobain high velocity oxy-fuel spraying tape

Saint Gobain supersonic flame spraying tape solutionCHR of Saint Gobain ® Thermal spray tape is a complete product family designed to meet various needs from sandblasting, plasma spraying to the most demanding HVOF supersonic flame spraying. Its core advantages lie in excellent high temperature resistance (some models can reach 315 ℃), outstanding wear and impact resistance, and the ability to be cleanly removed without leaving any residue after spraying.The following are the main tape types and recommended models for different application requirements:Tape type, core substrate/characteristics, temperature resistance/wear resistance, applicable scenarios and advantages, representative modelsSilicone fiberglass cloth tape is composed of a composite of silicone rubber and fiberglass cloth, making it a versatile tool for thermal spraying. Excellent wear resistance, with a temperature resistance of up to 260 ℃ (some processes have higher temperatures). Suitable for shielding protection of the vast majority of plasma spraying and flame spraying. Widely used in fields such as aircraft engine maintenance. 2975-8R / 2965-8Rtwenty-three thousand eight hundred and sixteenHV60Aluminum foil glass fiber cloth tape is a composite of aluminum foil and glass fiber cloth, which balances temperature resistance and thermal conductivity. High temperature resistance and good thermal conductivity contribute to heat conduction during the spraying process. Specially suitable for HVOF supersonic flame spraying. Its heavy-duty version (such as 2925-11) is designed specifically for harsh HVOF applications. 2925-7 / 060042925-11 / 2925-11RMulti layer composite/heavy-duty adhesive tape adopts multi-layer composite structures such as silicone rubber, aluminum foil, glass fiber cloth, etc. Excellent wear resistance and adhesion are the top of the line performance. Specially designed for extremely demanding HVOF spraying and special industrial applications, providing the highest level of surface protection. H7525 / H6595 / H7575Glass fiber cloth tape is a pure glass fiber cloth substrate with reliable functionality and economic practicality. High strength, high temperature resistance, and high cost-effectiveness. Can be used as a general masking or as a base tape in combination with other premium tapes. 2905-7R / 2905-10R2915-7 / 2915-10💡 How to choose?Judging from the spraying process: If it is conventional plasma or flame spraying, silicone glass fiber cloth tape (such as 2975-8R) can usually meet the requirements. If it is clearly HVOF (supersonic flame spraying), aluminum foil fiberglass cloth tape (such as 2925 series) or multi-layer composite tape (such as H series) should be preferred.Look at the surface shape: If it is necessary to adhere to irregular and complex surfaces, aluminum foil tape (such as 2925-7) has better adhesion due to its good flexibility. Flat or large curved surfaces can choose glass cloth substrates with higher strength.Check official information: For specific model selection, inventory, and technical parameters, it is recommended to directly consult the official website of Saint Gobain or contact its authorized dealers to obtain the most accurate information.

LED potting tape

LED potting tape is a high-temperature masking tape specifically designed for the manufacturing process of LEDs (light-emitting diodes). Its core function is to seal and protect specific areas during the epoxy resin encapsulation and high-temperature curing process of LED.This type of tape typically has the following key characteristics:High temperature resistance: This is its core performance to ensure stable performance during the high-temperature curing process from 150 ° C to 260 ° C.Clean peeling: It can be easily peeled off after use without leaving any residue on the surface of the object being pasted, which is a key indicator for evaluating its quality.Chemical resistance: able to resist the erosion of chemicals such as epoxy resin during the sealing process.Precise fitting: The texture is soft and can be tightly attached to the surface of the LED module, effectively preventing leakage of the sealing glue (i.e. "glue overflow").Effect control: The surface of the tape is divided into two types: matte and glossy. After use, it can produce corresponding optical effects on the surface of the LED resin to meet different product requirements.When making a purchase, you can refer to the following common technical parameters:Common specification range of parameter itemsSubstrate Polyester Film (PET)Adhesive based organic silicon pressure-sensitive adhesiveThickness 0.06mm -0.095mmThe length is usually 33 meters per rollThe common maximum width is 1000mm, which can be cut as neededLong term temperature resistance of 180 ℃, short-term resistance of 260 ℃Colors: green, transparent, white

Domestic high-temperature resistant and flame-retardant insulation epoxy film tape

When it comes to domestically produced high-temperature resistant and flame-retardant insulation epoxy film tape, we can understand from these aspects: there are already many products on the market that can reach or approach the international advanced level, especially in the application fields of new energy, motors, etc. Below, I will provide you with a detailed introduction from several aspects, including product features, mainstream manufacturers, application scenarios, and market trends.🧐 What is high temperature resistant, flame-retardant, and insulating epoxy film tape?This is a high-performance special tape, whose core characteristics are determined by its multi-layer structure:Substrate (epoxy film): Provides dimensional stability, insulation, and partial temperature resistance, with high dielectric strength and good formability.Adhesive: Excellent adhesion, high temperature resistance, and solvent resistance enable the tape to firmly adhere to various surfaces.Coating (optional): Special coatings can further increase flame retardancy, heat resistance, or other functions.Main technical indicators of domestic adhesive tape:This type of tape can usually achieve or approach the following parameters:Temperature resistance: Short term temperature resistance can reach 260 ℃, and long-term working temperature is usually in the range of 130-155 ℃.Flame retardant rating: Most products can meet UL 510 standards or achieve UL94 V-0 rating.Insulation performance: The dielectric strength is generally high, for example, the 3M Super10 series can reach 7500V to 8000V. There are domestic products with insulation performance up to 20KV without breakdownMain application areasWith excellent comprehensive performance, it is widely used in the following fields:Electrical insulation: used for inter turn insulation and end fixing of coils in equipment such as motors, transformers, and generators.New energy battery: it is used for CCS integrated busbar hot pressing packaging of battery modules, aerogel insulation sheet packaging and insulation protection between cells.Electronic components: used for fixing, insulating, and packaging internal components such as relays and capacitors.Aerospace: Some high-performance products are used for insulation and protection of aviation interiors and electrical systems.📈 Market trend: domestic substitution acceleratesAt present, the domestic high-temperature resistant epoxy tape market is in a period of rapid development opportunities:Technological breakthrough: By introducing modifiers such as biphenyl structure and organosilicon into the formula, the glass transition temperature (Tg) and long-term heat resistance of domestic epoxy adhesives have been significantly improved.Cost advantage: On the premise of achieving the same performance, the price of some domestically produced high-performance adhesive tapes is about 60% lower than similar imported products, and the advantage is very obvious.Industrial maturity: The Chinese epoxy film insulation tape market has reached a considerable scale, and a group of local enterprises with independent research and development capabilities and complete supply chains have emerged.💎 summaryOverall, domestically produced high-temperature resistant and flame-retardant insulation epoxy film tape has matured in terms of performance, especially in the fields of household appliances, new energy, and general industry, which can well meet the demand. When selecting suitable brands and suppliers, it is recommended to mainly consider key indicators such as UL flame retardant certification, temperature resistance rating (long-term/short-term), insulation strength, etc. of the product, and verify them based on actual working conditions.

Die casting demolding anti scratch and high temperature protection PTFE tape

PTFE tape is indeed a fairly mature industrial solution for the challenges you encounter in demolding, workpiece scratches, and high-temperature environments during die-casting processes.It essentially combines the non stick properties of polytetrafluoroethylene (PTFE) with the convenience of adhesive tape, forming a smooth and high-temperature resistant "physical barrier" directly on the surface of the mold.🔑 Core Performance: Why is it capable?The reason why it is suitable for die-casting demolding mainly depends on the following performance:Excellent high temperature resistance: This is a basic requirement. High quality PTFE tape can be continuously used in the temperature range of -70 ℃ to+260 ℃, and some products can withstand high temperatures of up to 300 ℃ in the short term, which can stably cope with the high heat environment during the die-casting process.Smooth and extremely low friction coefficient: Its surface is very smooth and almost does not adhere to any substances (such as molten plastic, resin, etc.), ensuring smooth demolding of castings and effectively avoiding scratches.Excellent mechanical strength and durability:Scratch resistant: Teflon itself has a certain degree of hardness and wear resistance, but the mechanical strength of the tape depends more on its substrate.For die-casting scenarios, it is recommended to choose reinforced adhesive tape based on glass fiber (commonly known as "fiberglass cloth base"), which has high tensile strength and can better resist the impact of molten metal flow and the wear of mold closure, thereby achieving reusability and reducing maintenance costs.Widely resistant to chemical corrosion: It is almost not corroded by any strong acid, strong alkali, or organic solvent, and can adapt to various release agents or oil stains that may exist in the die-casting environment.Cleanliness and residue free: After high-quality silicone pressure-sensitive adhesive is peeled off at high temperatures, the back of the tape will not leave stubborn residue on the surface of the mold being bonded, which helps to keep the mold clean.High insulation performance: Teflon tape also has excellent electrical insulation performance, with some models having a breakdown voltage of up to 25KV, providing additional protection in scenarios that require electrical isolationSelection and usage suggestionsTo select the most suitable adhesive tape for your die-casting process, you can focus on the following aspects:Clear usage requirementsTemperature and pressure: Confirm the working temperature and pressure that the mold is subjected to.Wear resistance requirements: Based on the mold structure and working conditions, evaluate the requirements for the wear resistance of the tape, and decide whether to choose pure PTFE film (with good flexibility, suitable for complex surfaces) or fiberglass cloth based reinforced type (with high strength and more wear resistance).Thickness and size: Select the appropriate thickness (such as 0.08mm, 0.13mm, 0.25mm, etc.) based on the precision requirements of the mold, and confirm whether a specific width or customized shape is needed.Focus on key parametersMaximum operating temperature: Ensure that the upper temperature limit of the tape is higher than your process temperature.Tensile strength: This is particularly important for fiberglass cloth tape, as it directly affects its durability.Adhesive strength: The peeling force on steel is one of the key indicators, for example, 3M 5498 has a peeling force of about 22-48N/100mm on steel.Thickness range: The thicker the thickness, the better the strength and durability.Proper installation and maintenanceThoroughly clean: Before pasting, be sure to thoroughly clean the surface of the mold with a suitable solvent (such as acetone) to ensure that there are no oil stains or impurities, in order to ensure optimal adhesion.Smooth pasting: When pasting, avoid generating bubbles and use a scraper to smooth from the center to the edges.Regular inspection: Regularly check the wear of the tape during production intervals. Once serious scratches or peeling are found on the surface, it should be replaced in a timely manner.Easy replacement: After tearing off the old tape, if there is any residue, it can be removed with alcohol or a special cleaning agent, and then a new tape can be reattached.There are many manufacturers and brands on the market that supply PTFE tape. We suggest that you evaluate from these perspectives in order to find the most suitable "invisible protector" for your die-casting conditions.

Glass thinning and etching protection UV anti-adhesive PO protective film

In glass thinning and etching processes, a special protective film is required to protect non processed areas. UV reducing film (also known as UV film) is designed for this purpose, and PO (polyolefin) is one of the high-performance substrates.It is like an "intelligent shield" that firmly adheres to provide protection during processing. After processing, it can be easily and completely peeled off by UV light irradiation without leaving any residue.⚙️ Core feature: How does it work?The excellent performance of UV reducing film in glass etching process is attributed to its unique design:UV debonding and non-destructive peeling: this is its core function. Before exposure to ultraviolet (UV) light, the tape has high adhesion (such as initial adhesion of PO material up to 1300 gf/25mm), which can firmly adhere to the glass surface and prevent etching solution from penetrating. After completing the protection task, the adhesion will instantly decrease significantly through UV light irradiation, reaching a nearly non stick state (such as PO material dropping to 25 gf/25mm after debonding), making it easy and non-destructive to peel off, effectively avoiding the risk of glass substrate cracking due to uneven tearing force.Excellent acid and alkali corrosion resistance: Highly corrosive solutions such as hydrofluoric acid (HF) and hydrochloric acid (HCL) are often used in etching processes. This type of protective film can effectively resist the erosion of these chemicals, preventing them from warping, peeling, or seeping during complex acid washing processes.No residual glue, high cleanliness: Excellent UV debonding process and colloidal formula ensure that after the film material is peeled off, the glass surface can maintain its original cleanliness without adhesive residue. This is the key to ensuring the quality of subsequent processes and product yield, and it is also an important reason why PO protective films are highly favored in high-end applications.🛡️ PO substrate vs. PET substrate: how to choose?The performance of UV thinning film is closely related to the substrate (i.e. the main material of the film), and the common ones are PO and PET (polyester film), which have significant performance emphasis in glass thinning etching process. You can choose according to your specific application scenario:Characteristics PO (Polyolefin) PET (Polyester)Base material characteristics: The material is soft, with excellent ductility and cushioning properties. The material is relatively hard, with good stiffness, better temperature resistance, and dimensional stabilityThe key process is manifested in glass thinning/etching, which can provide excellent adhesion and buffering protection; Excellent acid resistance performance, some products can be sprayed under mixed acid for more than 200 minutes without acid leakage or detachment. They perform well in cutting, grinding and other processes that require high fixation force, with good processing performance and easy punching and cuttingThe application scenarios are mainly recommended for complex chemical etching, glass thinning, and strengthening processes. Its excellent acid resistance and flexibility make it the preferred choice for single-sided thinning of mobile phone glass covers, OLED/TFT panels, and other fields, mainly used for high-strength cutting, grinding, and other processes. It is also suitable for glass thinning protection, but in terms of acid resistance, conventional PET film may not be as good as PO filmViscosity change (gf/25mm) approximately 1300-1600 before UV irradiationAbout 25-30 after UV irradiation and about 1100-2200 before UV irradiationAbout 6-7 after UV irradiationReference temperature resistance: Long term temperature resistance of about 80 ℃Short term temperature resistance can reach 90-120 ℃, and long-term temperature resistance is about 80 ℃Short term temperature resistance of about 120 ℃Adhesive force (gf/25mm) refers to the adhesive force on a width of 25mm, with higher values indicating stronger initial adhesion.🔍 Application process: from attachment to peelingUnderstanding how it operates in actual production helps to better understand its value:Attachment: Before etching, apply the UV reducing film evenly to the glass surface that needs to be protected (such as the display area), and ensure that the two are tightly adhered without bubbles.Etching: Chemical etching is performed, during which the protective film, with its high viscosity and acid resistance, effectively blocks the etching solution from corroding non target areas.UV irradiation: After etching is completed, use UV curing equipment to irradiate the protective film. The photoinitiator in the adhesive layer reacts rapidly under UV light irradiation, causing cross-linking or changes in the molecular structure of the adhesive layer, resulting in a significant decrease in viscosity.Peel off: After UV irradiation, the protective film with extremely low viscosity can be easily and completely peeled off from the glass surface without leaving any residue, completing the protective mission

High temperature resistant glass fiber cloth pressure sensitive adhesive tape