Applications of pressure sensitive adhesive

Medical adhesive coated with pressure-sensitive adhesive can be rolled into a round simple, made of medical adhesive, can also be mixed in the pressure-sensitive adhesive pharmaceutical made of medical treatment paste, such as made of “wet pain relief paste” coated with pressure-sensitive adhesive medical adhesive fabric substrate, coated with medical pressure sensitive adhesive on the fabric substrate. Medical adhesive A dressing or medicine pack that can be cut into strips or blocks and pasted on human skin to fix skin wounds.

Medical adhesive can be pasted on human skin to treat diseases. In the existing technology, the base fabric of medical adhesive cloth coated with pressure-sensitive adhesive is made of cotton yarn spun from cotton fibers. The elasticity of cotton fiber is not very large, and the elasticity of woven cotton cloth is low. When used, the medical adhesive coated with pressure-sensitive adhesive is pasted on the skin. The skin will be stretched or compressed due to the movement of the human body, and the medical adhesive coated with pressure-sensitive adhesive on the skin will be stretched or compressed.

Changsheng is also a company dedicated to the research and development, production and sales of emulsion pressure-sensitive adhesives. We can effectively solve the problems that customers encounter in the use of glue because of different production equipment and technology.

We specialize in the production of protective film and pressure-sensitive adhesives for many years, with our own R&D team. In the future, through continuous research and development and summing up experience, our glue can be applied to more product application fields.

PE protective film for glass usage

Our acrylic pressure-sensitive adhesive is widely used in:

  • Fit of different film materials

Hot item: Glue FR-201

Advantages: Our laminating adhesive has strong peeling strength, suitable for laminating BOPP, CPP, PET, PE or other lightweight packaging film materials.

  • Protective film for household appliances

Hot stuff: Glue FR-07; Glue FR-102-2

Advantages: The series of adhesive peeling force increase small, does not leave residue, good anti-scalding performance.

The FR-07 is suitable for smooth surfaces of stainless steel, and the FR-102-2 is suitable for slightly rough surfaces.

  • outdoor protective film

Hot stuff: Glue FR-04; Glue FR-W78-1; Glue FR-091-6

Advantages: This series of glue has the advantages of temperature resistance (including high and low temperature), moisture-proof, and waterproof performance. Their adhesive force is different and can meet different bonding requirements.

Glue FR-091-6 is especially suitable for carpets, fluorocarbon spray aluminum profiles, and other rough surfaces.

  • Off-line Low-E glass protective film

Hot item: FR-08-J7

Strength: It has the characteristics of strong stripping strength and moderate unwinding performance.

Wuxi Changsheng Adhesive Products Co., Ltd. is also committed to emulsion pressure-sensitive adhesive research and development, production, and sales of the company. We can effectively solve the problems that customers encounter in the use of glue because of different production equipment and technology.

We specialize in the production of protective film and pressure-sensitive adhesives for many years, with our own R&D team. In the future, through continuous research and development and summing up experience, our glue can be applied to more product application fields.

Low-E glass protective film usage

 

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Methods for preparing aqueous latex emulsions for use in pressure-sensitive adhesives

The international publication W000/61670A1 discloses a method for the preparation of aqueous latex emulsions for pressure-sensitive adhesives that, in addition to having improved resistance to water whitening, maintain adhesion in hot water environments.

compositing

The method consists of preparing a water-containing latex emulsion from a monomer mixture consisting essentially of the following components: At least one alkyl acrylate having at least 4 carbon atoms in an alkyl chain, at least one unsaturated carboxylic acid of the genus alone and at least one 5-styrene monomer, the polymerization is carried out in the presence of at least one anionic surfactant and an oxidation-reducing free-group initiation system.

Aqueous latex emulsions prepared in accordance with the W000/61670 method have polymer particles with an average particle size less than or equal to approximately 100m in diameter, according to the disclosure. None of the patents/publications above disclose the preparation of pressure-sensitive adhesives using polymerizable surfactants, Us patents 5,928,783 and 6,239,240 disclose a method for preparing aqueous emulsion polymers that can be used in pressure-sensitive adhesives.

Polymers are prepared by reacting at least one unsaturated monohydrate and polymerizable surfactants with an unterminated allylamine component. The preparation of pressure-sensitive adhesives with improved water and whitening resistance is not disclosed in the patent. The international publication W001/85867A1 discloses water-resistant pressure-sensitive adhesives.

It is made of a water-containing latex emulsion with an average particle size essentially not exceeding approximately 100nm and is emulsified in the presence of a reactive emulsifier consisting essentially of the following substances: Alkyl, alkenyl, or aryl-substituted base compounds having at least one allyl substituent, and proxy alkyl sulfonate substitutes, as described in US Patent 5,332,854.

The aqueous latex emulsion is prepared from a monomer mixture consisting of basically 20 of the following components: Approximately 50 to approximately 90 percent by weight of at least one propionic ester with at least four carbon atoms in the alkyl chain, approximately 5 to approximately 10 percent by weight of at least one unsaturated carboxylic acid or its corresponding anhydride, and approximately 15 to approximately 40 percent by weight of at least one styrene monomer, some or all of which can be replaced with hard monomers. That is, the monomer whose Tg is higher than 30℃, such as methyl methacrylate, isobornyl acrylate, 25 ethyl acid, and so on.

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Methods for improving the water-whitening resistance of pressure sensitive adhesives

This article is related to pressure-sensitive adhesives based on aqueous emulsion and methods of preparing this adhesive. Most names of pressure-sensitive adhesives are in improved water– White Resistance. These pressure-sensitive adhesives are particularly suitable for applications where a pressure-sensitive adhesive is required to maintain adhesion between the substrate and the surface material when subjected to hot water spray or dipping. Hot water adhesion is required in applications such as bottle labeling, where bottles are subjected to hot water spray during washing operations.

acrylate copolymer adhesive

In general, In a transparent surface or substrate pressure-sensitive adhesive contact with water or high humidity of 5 degrees, water resistance to whitening is desired. These include labels on the sides of trucks, signs, and bottles. The prior art discloses a method for providing a water-resistant whitening latex emulsion for a pressure-sensitive adhesive. Us Patent 5,286,843 discloses a method for improving the water-resistant whitening of a pressure-sensitive adhesive containing a water-containing latex emulsion and a water-soluble ionized adhesive by removing water-soluble ions and adjusting the pH to at least approximately 6. The patent discloses that water-soluble ions can be removed by a number of techniques, including centrifugation, dialysis, precipitation, and deionization with ion exchange resins.

The preferred method of removing water-soluble ionizers is to contact the aqueous latex emulsion, a prepared pressure-sensitive adhesive containing the aqueous emulsion, or both with the dissociative exchange resin. The international publication W097/11996A1 discloses a method for preparing heat-resistant water-whitening latex emulsions for use in pressure-sensitive adhesive compositions, which consists of copolymerization of a monomer mixture, It consists of at least one alkyl acrylate containing at least 4 carbonic alcohols, at least one polar copolymer, and at least one partially water-soluble copolymer in the presence of at least approximately 7% by weight. Polymerization occurs in the presence of at least one nonionic surfactant containing at least 8 moles of ethylene oxide and at least one anionic surfactant containing up to about 10 moles of ethylene oxide, neutralizing the polymerized product to produce an emulsion with a pH higher than and containing particles with a volume average particle size of up to about 165m in diameter. After polymerization, electrolytes can be added to stabilize the opacity of the film flowing from the emulsion.

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Pressure-sensitive adhesive notes

The invoices used in the current circulation field mostly use water-printed paper and fluorescent ink. Although water-printed paper and fluorescent ink have a certain anti-counterfeiting function, with the popularity of the application of fluorescent ink technology and the appearance of chemical watermarking, water-printed paper, and fluorescent ink can be seen everywhere, and their anti-counterfeiting function declines rapidly. The existing bills are coated with a back coated carbon layer on the back of the bills to solve the problem of anti-counterfeiting filling in the bills, but there is poor anti-counterfeiting performance and easy to pollute, and not easy to save.

Chemical flame retardants

The purpose of the utility model is to provide a pressure-sensitive anti-counterfeiting bill, which is coated with color-changing capsule coating and invisible transferable fluorescent ink coating of different colors on the back of the “customer name” and the capital amount of “ten thousand”, “Qian” and “hundred” on the paper of the bill. And the upper surface of the middle paper and the lower paper is coated with a transferable carbonless paper coating layer to overcome the shortcomings of the existing technology.

The overall content is: Pressure-sensitive anti-counterfeiting bills include upper paper 1, middle paper 2, and lower paper 3, which are stacked in sequence and corresponding to the bill columns. Upper paper 1, middle paper 2, and lower paper 3 are all made of non-carbon paper, and the corresponding edge on the same side of upper paper 1, middle paper 2, and lower paper 3 is a fixed connection; The upper surface of paper 2 and paper 3 coated with transferable non-carbon paper coating layer 8, paper 1, paper 2 “customer name” at the back coated with discoloration capsule coating 4, in paper 1, paper 2 capital amount “million”, “Qian”, “100” at the back coated with different colors of invisible transferable fluorescent ink coating 5, 6, 7. The back of color-changing capsule coating 4 and upper paper 1 and middle paper 2 are bonded respectively. Invisible transferable fluorescent ink coating 5, 6, 7, and the back of the upper paper 1 and the middle paper 2 are respectively bonded. The transferable carbon-free paper coating layer 8 is bonded to the middle paper 2 and the bottom paper 3, respectively.

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Thermal protection pressure sensitive adhesive resistor

Varistor is widely used for overvoltage protection. For conventional varistors, when the voltage at both ends is near the critical on-off voltage value for a long time or to the surge impact with large energy, the current through the varistor significantly increases, and the temperature of the ceramic substrate in the varistor significantly increases. In the abnormal inert condition, the varistor base will be heated to more than 300℃, thus constituting fire and other safety hazards.

pressure sensitive adhesive

Chinese utility model patent Application No. 00237913.9 discloses a safe varistor, which is characterized by temperature insurance that can conduct heat conduction with the varistor. The varistor and the temperature insurance are insulated in the same shell with the heat conduction medium.

In the working process of the product, if the temperature of the varistor is too high due to abnormal factors, the temperature insurance placed next to the varistor will be heated and melted due to heat conduction, to prevent fire and other accidents caused by the high rise of the varistor. Therefore, the above existing products have certain advantages. However, in practical application, it is found that the response speed of the temperature insurance is slow, which is not conducive to the safe implementation of protection. At the same time, the ability of temperature insurance to withstand the impact of a large current is weak, and easy to fail after the impact. Therefore, the above existing products have defects.

The aim now is to improve the overheating protection structure of the above existing products and provide a thermal protection varistor with fast response speed and strong resistance to large current impact. The thermal protection varistor of the utility model has a shell and a varistor covered by a shell, on which a first leading electrode and a second leading electrode are arranged.

One end of the first leading electrode and the second leading electrode are respectively electrically connected with two internal electrodes on the pressure-sensitive ceramic substrate, and the other end of the first leading electrode and the second leading electrode extend to the shell. It is characterized by a metal spring and a third electrode, the metal spring is arranged in the shell, in the varistor with a pressure-sensitive ceramic substrate of an internal electrode conductive metal, one end of the metal spring through the low melting point metal, and the metal conductor phase welding, the other end of the metal elastic yellow fixed on the shell and the third electrode conductive connection, The third electrode has an outlet end extending out of the shell.

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Technical background of pressure-sensitive adhesive tape used to fix the diagram of capacitor components

Wet or dry spiral aluminum electrolytic capacitor color bracket inserted in an electrolyte-containing aluminum box (aluminum c(metal shell) capacitor element, wherein by winding aluminum foil (electrode foil) to obtain the capacitor element, and the aluminum foil has been made of canna-flan electrolytic paper or in its upper pressure on the surface of the isolation, the sheet has been corrupted or oxidized. The outermost layer of the laminated material may be electrode foil or electrolytic paper or isolation sheet.

PE-protective-film-for-glass

As a method of preventing the line ends of such capacitor components from loosening, a method has been used to date method includes a diagram of the adhesive applied directly to the outermost layer of electrolytic paper or spacer for bonding and securing capacitor elements: Or one method is to glue a pressure-sensitive adhesive tape with a width basically equal to the degree of the capacitor element to the capacitor element around or more places, and make the transverse range of the pressure-sensitive adhesive tape is consistent with the height of the transformer element, such a pressure-sensitive adhesive tape used as a coil to fix the transformer element, The main use of biaxial tensile poly terephthalate PET), polypropylene PP), polyphenylene sulfide (PPS) or similar as support substrate pressure sensitive adhesive tape, or containing unstretched polyimide P or polyimide PED as support substrate pressure sensitive adhesive tape.

On the other hand, electrolytic capacitors are required to have heat resistance. For example, a strong aluminum electrolytic capacitor designed to be used at high temperatures requires a tolerance of 150℃. For substrate components with more surface packaging (installation): it is required that the time be subject to a temperature of not less than 250℃ produced by the flux softener, which has recently been more frequently affected by the increased flux melting temperature due to lead removal. Therefore, it is required to be used in the diagram of the fixed capacitor element

Pressure-sensitive adhesive tape withstands negative self-temperature applied to the capacitor element. In addition, in the dry aluminum electrolytic capacitor in its preparation process, in the electrolytic paper or isolation sheet carbonization step, in the temperature of not less than 250℃ 30 heat treatment, therefore, the dry aluminum electrolytic customer is also required to withstand high temperature. Therefore, it is necessary to provide pressure-sensitive adhesive tape for securing the diagram of the electrical element, which ensures that not only loosening but also a short circuit of the capacitor element is prevented, even at temperatures not below the glass transition point of the resin forming the substrate film.

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Provide pressure sensitive adhesive for various groups of packaging

More recently, there has been a trend in mass consumption to localize sales as much as possible and approach a small number of groups individually. These groups may have regional, racial, sexual, adult, or distinctively interesting distinctions. In order to reach these different groups, packaging needs to be provided specifically for these groups. According to the above description, traditional packaging materials are generally suitable for long versions of materials, forming short versions or rapid changes in packaging are impossible, or very expensive.

glue

We have found that silver halide-based photosensitive materials are suitable for packaging applications. Moreover, a short version of the live fast photographic development equipment suitable for the material can be used. Long live silver halide development devices capable of continuous material processing at relatively high speeds are also available. The combination of low-cost packaging of appropriate photosensitive materials with development facilities that can rapidly process short and long versions of the material has opened up opportunities for the application of silver halide materials to packaging materials. Silver halide materials, which have properties such as softness, low cost, and flexibility, have been satisfactory materials for packaging. The use of thin, soft, and tough silver halide materials to produce a number of packaging materials with excellent properties. These materials can appear on the packaging of the bright, clear, full-color image.

Packaging materials need to have a depth of image that current packaging materials cannot exceed. A variety of packaging materials suitable for pressure-sensitive label packagings such as shampoo bottles, perfume bottles, and film boxes. Packaging materials not only need to have the advantage of excellent images but can also be used for thin base materials at low cost that provide excellent opacity and strength. Since this packaging material can be imaged by flash exposure or digital printing, it has the ability to form in a short period of time and the ability to switch from one image to the next without delay.

acrylic pressure sensitive adhesive supplier

As a professional acrylic pressure-sensitive adhesive supplier, Changsheng is committed to solving the problems encountered by customers in the use of glue due to different production equipment and processes.

Compared with traditional solvent-based pressure-sensitive adhesive, our emulsion pressure-sensitive adhesive has the advantages of environmental protection, safety, and easy operation. Using deionized water instead of traditional solvent reduces pollution to the environment and is an ideal environmental protection product.

By adjusting the proportion of the curing agents, pressure-sensitive adhesives with different adhesive forces can be obtained to meet the needs of different applications. Suitable for a variety of materials, transparent after drying.

 

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High-viscosity Pressure-sensitive Adhesive FR-921

The existing packaging printing is a label base composed of a practical layer, a pressure-sensitive adhesive, and a carrier.

Prior art ink labels for packaging are composed of a practical layer material, a pressure-sensitive adhesive, and a carrier. A label base consisting of a utility layer, a pressure-sensitive adhesive, and a carrier is typically laminated and then printed using a number of non-photographic printing methods. The printed label is usually protected with a laminated material or protective coating over it.

pressure sensitive acrylate adhesive

The high-speed labeling equipment is applied to the packaging of finished labels composed of the protective layer, printed information, a practical layer, pressure-sensitive adhesive, and carrier material. In the process of converting pressure-sensitive roll paper material into the label, the pressure-sensitive roll paper material consisting of utility layer, carrier, pressure sensitive, and release coating is printed in a center guided device, that is, the label roll paper material does not contact the machine frame, guide plate or spacer wedge. For example, repeated edge contact between the pressure-sensitive roll paper material and the machine guide will likely result in the transfer of adhesive from the pressure-sensitive roll paper to the machine guide, resulting in the accumulation of unwanted adhesive on the edge guide.

In order for the sensitive silver halide imaging layer to be used for pressure-sensitive labels, the exposure of pressure-sensitive adhesives on the edge of the sensitive silver halide roll paper material must be significantly reduced, thereby eliminating the transfer of pressure-sensitive adhesives to edge guide devices common in photographic printing machines. The transfer of the pressure-sensitive adhesive into the photographic printer of the edge guide paper can result in loss of printing efficiency, printing defects, and cracking of the roll paper.

In the production of colored paper, the material is cut lengthwise to the appropriate size for consumer use before it is exposed. Form photographic paper on long and wide sheets, then roll them into larger web pages. These web pages must be cut lengthwise to the proper width in a very precise manner. It is important to do the slitter without damaging the sensitive material on the paper base.

Furthermore, it is important that the slitter is performed without the production of undesired amounts of contaminated dust on the surface of the developed photo. The usual paper cutter used for cutting photographic paper is a round paper cutter arranged on a shaft, in which paper is fed between the axes. Place round paper knives together so that they can be lightly touched and overlapped at the edges. Usually, one of the box cutters with a square edge is called a concave box cutter, and the other edge knife sharpened at some angles is called a convex box cutter. As a result, many strips can be cut simultaneously from wide paper.

high viscosity pressure-sensitive adhesive

Recently, our company launched a new product FR-921, characterized by high solid content, for customers to improve the coating speed, this product is mainly used for frozen packaging labels.

FR-921 is a high-viscosity pressure-sensitive adhesive based on the latest polymerization process and designed with various special monomers. It has good leveling properties, high peeling strength, high initial adhesion, and high solid content.

Moreover, this product is also an ideal environment-friendly product, with clear film formation, transparency, and good weather resistance. It has excellent bonding performance on paper, metal, plastic (such as ABS, PVC, PC, FET, PMMA, etc.), and other materials, especially difficult-to-stick substrates. Widely used in high-end products in the field of self-adhesive, suitable for all kinds of tape production, to meet the requirements of high-speed coating.

 

 

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Pressure sensitive labels should be applied to packaging

A coated pressure-sensitive label is applied to packaging to establish trademark identification, display the contents of the package, express quality information about the contents of the package, and provide consumers with information such as instructions on the use of the product or a catalogue of the ingredients of the contents. Printing on pressure-sensitive labels is usually applied directly to packaging or a printing medium, usually using intaglio or flexographic printing, is applied to packaging.

The three types of information commonly applied to pressure-sensitive labels are text, graphics, and images. Printed labels in this field are usually die cut to remove the non-imaging areas of the application layer and pressure sensitive adhesive. Provide imaging web and die cut labels that do not contain adhesives at the edges to the labeling operation of packaging. Although the prior art of die – cut imaging labels do not contain adhesives at the edges, transverse – cut labels are produced in a roll of discontinuous imaging labels.

transparent PE protective film

The use of photographic materials to preserve memories of special events such as birthdays and holidays is well known. It is also used in a large number of display materials used by the advertising industry. Because these materials are easily damaged by wear, water, or bending, they are considered high quality products with high costs and are somewhat fragile.

Photographs are traditionally placed behind frames, albums, and protective materials because of their fragility, fragility, and value. It is considered a luxury for consumers to keep records of important events in their lives. Photographs are also considered expensive display material for the advertising industry. Since photographs are considered a luxury item, they have not been used in other commercial areas. Pressure sensitive labels are typically provided with a web material that carries a roll

The paper material can transmit pressure sensitive labels through printing and paper processing while protecting the adhesive.

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Pressure sensitive adhesive labels for hard drives

In recent years, the demand for civilian hard drives, such as those used in personal computers, has grown tremendously. With this demand, the miniaturization of the hard drive itself and the reduction of noise generated by the hard drive (silence assurance) have been considered as important as the increased storage capacity.

As a measure to reduce the noise produced by the hard disk drive, the vibration damping steel sheet is generally used on a part of the hard disk drive housing (such as the cover plate). However, from the Angle of reducing size and weight, reducing noise, productivity or cost, the use of vibration damping steel sheet method is not considered to be another satisfactory measure. This is particularly evident in hard drives with recording platters no larger than 2.5 inches in diameter.

adhesive

Therefore, the inventor et al. proposed a pressure sensitive adhesive label for hard drives (hereafter occasionally referred to as “HDD pressure sensitive adhesive label”), which is affixed to the outer surface of the hard drive housing to reduce the noise generated by the hard drive when it is driven.

By utilizing this HDD pressure sensitive adhesive label, noise reduction can be achieved and information labeling function is given. HDD pressure-sensitive adhesive labels have a pressure-sensitive adhesive layer that is generally covered with a release liner (i.e., protected by the anti-adhesive liner) before HDD pressure-sensitive adhesive labels are used (pasted). When the HDD pressure sensitive adhesive label is used, the anti-adhesive pair disengages, exposing the surface of the pressure sensitive adhesive layer, and the HDD pressure sensitive adhesive label is then attached to the outer surface of the hard drive housing.

On the other hand, precise electronic components such as hard disk drives can be damaged by weak static electricity and need to be protected from such damage. However, in HDD pressure-sensitive adhesive labels, static electricity can be generated, leading to peeling electrification when the lining covering the pressure-sensitive adhesive layer is detached from HDD pressure-sensitive adhesive labels, at which point the current generated can lead to damage to precision electronic devices. Therefore, HDD pressure sensitive adhesive labels are required to have a small amount of peeling power when the anti-stick lining is detached.

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