What are the classifications of pressure sensitive adhesives? What is a pressure sensitive adhesive?

Pressure-sensitive adhesive is a kind of adhesive that is sensitive to pressure, and the scientific term is pressure-sensitive adhesive, and pressure-sensitive adhesive is a heavy in the field of adhesives.

To be an independent branch, its peeling force "Adhesive cohesion of the adhesive base force, so it is not easy to peel off the advantage, with dry.

Dry and permanently sticky properties.

There are many types of pressure-sensitive adhesives, which are introduced below

1. According to its properties and dispersion medium, it can be divided into water-soluble pressure-sensitive adhesive, solvent-based pressure-sensitive adhesive, emulsion-type pressure-sensitive adhesive, and hot-melt pressure.

Sensitive adhesives, calendered pressure-sensitive adhesives, among which water-soluble pressure-sensitive adhesives, hot-melt pressure-sensitive adhesives, and solvent-based pressure-sensitive adhesives are the mainstream pressure-sensitive adhesives in the market.

glue products, and hot melt pressure sensitive adhesive is the latest development of a pressure sensitive adhesive variety.

2: According to the composition structure, it can be divided into two categories: rubber type and resin type, and rubber is divided into natural rubber, synthetic rubber, and resin.

It is divided into polyurethane, polyacrylic ester, and silicone.

In addition to rubber, the main ingredient of rubber pressure-sensitive adhesive is also added with thickening resin, plasticizer and other ingredients.

In addition to the main ingredient resin, sensitive rubber must also add defoamer, wetting agent, etc.

Introduction to resin pressure-sensitive adhesives:

1: Among them, resin polyacrylate is currently the most widely used, and the output exceeds that of natural rubber pressure-sensitive adhesive.

2: Silicone and other resin pressure-sensitive adhesives are pressure-sensitive adhesives composed of a mixture of silicone resin and silicone rubber, which have the performance of high temperature resistance and aging resistance, and are a very important special pressure-sensitive adhesive.

Introduction to rubber pressure-sensitive adhesives:

1: Rubber pressure-sensitive adhesive is also known as elastomer pressure-sensitive adhesive, and the elastomer used in this type of pressure-sensitive adhesive is natural rubber at the earliest.

Later, it was gradually extended to various synthetic rubber and thermoplastic elastomers, so this kind of pressure-sensitive adhesive is called natural rubber pressure-sensitive adhesive and synthetic.

Rubber pressure sensitive adhesives, thermoplastic elastic pressure sensitive adhesives.

2: Thermoplastic elastomer pressure sensitive adhesive will not produce environmental pollution due to the no longer using solvents, and the production efficiency is high.

It can be with the modern society with a high call for eliminating environmental pollution, and has a very high promotion value.

3: Pressure-sensitive adhesives made of synthetic rubber and recycled rubber have a certain market volume due to their low price.

4: Natural rubber, which was developed early, today is still a large output of pressure-sensitive adhesives, with very good quality, almost can.

Various types of pressure-sensitive adhesive products are made.

3. According to whether the main component is cross-linked, pressure-sensitive adhesive can be divided into two categories: cross-linking and non-cross-linking. Cross-linked pressure-sensitive adhesives are cross-linked.

The methods can be divided into room temperature cross-linking type, heating cross-linking type, optical cross-linking type, etc. Among them, the adhesive strength of cross-linked pressure-sensitive adhesive is the best and suitable.

Produce permanent pressure-sensitive labels.

With the needs of society and production, assembly line operation production is required to be high-speed and efficient, and social and environmental protection is necessary to eliminate pollution in production.

Requirements, more uniform coating requirements, hot melt pressure sensitive adhesive was born, hot melt pressure sensitive adhesive has the advantages of hot melt adhesive and pressure sensitive adhesive, compared with solvent-based, water-based pressure sensitive adhesive, easy to use and operate, no pollution in the production process, uniform coating, is the ideal pressure sensitive adhesive.

The demand for replacement products is very strong now.

Pressure-sensitive adhesives are usually divided into two categories: rubber type and resin type according to the composition of the main resin. Rubber type can be divided into natural rubber and synthetic rubber; The resin type mainly includes acrylic, silicone and polyurethane.

It is also sometimes divided into water-soluble and non-water-soluble pressure-sensitive adhesives.

Kuer Industry (Shanghai) **** has UV pressure sensitive adhesive.

Pressure-sensitive adhesives are a class of adhesives that are sensitive to pressure.

Pressure-sensitive adhesive is short for pressure-sensitive adhesive. It is a class of adhesives that are sensitive to pressure. Pressure-sensitive adhesives can be divided into two categories: rubber type and resin type according to the composition of the main resin.

Rubber type can be divided into natural rubber and synthetic rubber; The resin type mainly includes acrylic, silicone and polyurethane. In addition to the main component of rubber pressure-sensitive adhesive, other auxiliary components should be added.

1.Different substrates are used: the thermal adhesive is based on aluminum foil composite cloth, and the high-performance special thermal adhesive is evenly coated, with high peeling strength, good initial tack, excellent cohesion and good weather resistance.

The pressure-sensitive adhesive is based on polyacrylate or polyvinyl ether, and the substrate is required to be uniform, with small elasticity and good solvent wettability.

2.Different applications: thermal adhesive is mainly used for the outer packaging of thermal insulation projects, refrigerators, refrigeration equipment and sealing edges.

Pressure-sensitive adhesives have a wide range of applications, such as diapers, women's products, double-sided tapes, labels, packaging, medical and hygiene, book binding, surface protective films, wood processing, wallpaper and footwear.

3.Different ways to use: thermal adhesive is sensitive to heat, and it will show stickiness when heated, and it can stick after it cools down. Pressure-sensitive adhesives are pressure-sensitive adhesives that act as adhesives by applying light acupressure after curing.

I have seen a lot of pressure-sensitive adhesive on the Internet, what is the definition and explanation of pressure-sensitive adhesive, and I am confused, firstly, it is too professional, and secondly, it is all copy-pasted and**, there is no thing of my own, so after reading it, people still don't understand, and now Beijing Glorious Century R&D personnel will explain to you what pressure-sensitive adhesive is or what is pressure-sensitive adhesive, as follows:

Pressure-sensitive adhesive is a kind of viscous compound, in essence, it is a viscoelastic body with both liquid viscous properties and solid elastic properties, rarely can be directly used for bonding, the full name of pressure-sensitive adhesive in the textbook is pressure-sensitive adhesive, commonly known as self-adhesive, it is made into pressure-sensitive adhesive tape and pressure-sensitive adhesive label paper, pressure-sensitive adhesive sheet and other pressure-sensitive adhesive products can be used for bonding, the above-mentioned pressure-sensitive adhesive products are commonly known as tape, self-adhesive label paper, pressure-sensitive film, which is composed of pressure-sensitive adhesive, substrate, primer, Pressure-sensitive adhesive is the most important component of pressure-sensitive tape, its function is to make the tape have pressure-sensitive adhesion characteristics, mainly used as the substrate of fabrics, plastic films, paper, etc., is the carrier of pressure-sensitive adhesive, the primer is to increase the bonding strength of pressure-sensitive adhesive and the substrate, when using, tear or peel off the peeling paper and protective film to expose the adhesive surface and gently pressurize the tape to bond with the surface of the adhesive.

Pressure-sensitive adhesives are usually divided into two forms: liquid and solid, the liquid pressure-sensitive adhesive is made into pressure-sensitive adhesive products through the coating and drying process, and the solid pressure-sensitive adhesive block is made by heating and melting and then coated on the substrate.

Therefore, usually we can't see the body of the pressure-sensitive adhesive, and the characteristics of the pressure-sensitive adhesive can only be expressed through the performance of its products, that is, the bonding process is very sensitive to pressure, and the adhesive can be adhered to the surface of the adherent by finger touch pressure, so it is called pressure-sensitive adhesive.

Beijing Glorious Century on the complete definition of pressure-sensitive adhesive:

Pressure Sensitive Adhesive is a class of adhesives that are sensitive to pressure. It is mainly used for the preparation of pressure-sensitive tape, and its function is to make the tape have pressure-sensitive adhesion characteristics, and the peeling force of the general pressure-sensitive tape is the cohesion of the adhesive and the adhesive base force, so that the pressure-sensitive tape will not have degumming and other phenomena in the process of use.

Generally speaking: pressure-sensitive adhesive is a special type of adhesive that can be bonded without heating, solvent or other means, with acupressure, under normal circumstances, it must be coated on the ribbon substrate to make a variety of pressure-sensitive tape-based pressure-sensitive adhesive products can be used, pressure-sensitive tape is composed of pressure-sensitive adhesive, substrate, primer, back treatment agent, etc., pressure-sensitive adhesive is the most important component of pressure-sensitive tape, its role is to make the tape have pressure-sensitive adhesion characteristics, mainly used as the substrate of fabrics, plastic films, paper, etcThe primer is to increase the bond strength between the pressure-sensitive adhesive and the substrate. When using, tear off the protective film, gently pressurize the tape and the surface of the adherent, the finished products have the following characteristics, bonding can be achieved with acupressure, when tearing off, there is little pollution and residue on the surface of the adherent, all kinds of tapes, adhesive tapes, patches, etc. used in life and production have this characteristic, so we literally call the adhesive in the pressure-sensitive tape pressure-sensitive adhesive.

According to the language use environment, there is a difference between pressure-sensitive adhesive and pressure-sensitive adhesive, pressure-sensitive adhesive is generally used directly for bonding, equivalent to a raw material, when made of pressure-sensitive adhesive products such as pressure-sensitive tape, so that the tape has pressure-sensitive adhesion characteristics when it is called pressure-sensitive adhesive, although the composition of pressure-sensitive adhesive has not changed, but the name has changed, just like a woman, you can call a girl, you can also call a daughter-in-law, although they are all a person, but the girl and daughter-in-law are different, that is, the same thing, Due to the spatial location or locale, the name is different.

Academic definition: Pressure-sensitive adhesive is a viscoelastic with both the viscous properties of liquids and the elastic properties of solids, and this viscoelastic has the influencing factors and properties that can withstand the peeling force, cohesion and adhesive force in the bonding process.

Characteristics of pressure-sensitive adhesives: 1: Long-lasting high viscosity.

2: Apply with your hands or fingers only. 3:

No activation by water, solvent or heat is required. 4: There is a strong adhesion.

5: Sufficient cohesion and elasticity.

Advantages of pressure-sensitive adhesives: 1: Rapid application of glue without mixing or brushing. 2: Uniform glue volume. 3: Can be die-cut into special shapes. 4: It has viscoelasticity and eliminates brittleness. 5: Low odor when used.

This is actually quite clear when interpreted literally.

Heat-sensitive adhesives are sensitive to heat, which means that they will be sticky when heated, and they will stick when they are cold.

Pressure-sensitive adhesives are pressure-sensitive adhesives that exhibit good adhesion when pressure occurs and stick when pressure is removed.

Kuer Industry (Shanghai) **** has UV pressure sensitive adhesive.

It is simple to operate and easy to use.

Small investment in equipment.

There is no need for heating equipment, etc.

Specifically, it is a hot-melt tape for belt packaging that is used for automatic insertion of electronic components in the production process. The hot melt tape is made by applying a pressure-sensitive adhesive layer to one side of high-strength crepe paper used as a base layer. This hot-melt tape is used in conjunction with the paper tape used as a carrier, can realize the neat arrangement of electronic components, and at room temperature, electronic components are firmly bonded between carrier paper and hot-melt tape of the utility model.

It can realize the automatic insertion of electronic components, which not only does not make mistakes, but also improves production efficiency.

Thermal tape uses aluminum foil composite cloth as the base material to evenly coat high-performance special thermal adhesive. High peel strength, good initial tack, excellent cohesion and good weather resistance. It is mainly used for outer packaging, refrigerators, refrigeration equipment and sealing edge joints of thermal insulation projects.

heated, sticked; Pressurized, sticked.

Pressure sensitivity, as the name suggests, is to be sensitive to stress. Pressure-sensitive adhesives, or pastes, are highly adhesive adhesives that rely on finger pressure to hold the material in place. Pressure-sensitive adhesives are an important part of pressure-sensitive tapes.

Do you know what pressure-sensitive tape is? Let's take a look at pressure-sensitive tapes!

What is pressure-sensitive tape.

Pressure-sensitive tape is a special type of tape made by applying a special adhesive (pressure-sensitive adhesive) to a ribbon-like substrate. It is composed of pressure-sensitive adhesive, substrate, primer, backside treatment agent, etc. Pressure-sensitive adhesives are the most important components of pressure-sensitive tapes.

Its effect is to give the tape a pressure-sensitive adhesion characteristic. The main substrates used as substrates are fabrics, plastic films, paper, etc. The primer is to increase the bond strength of the pressure-sensitive adhesive to the substrate.

When using, gently apply pressure to bond the tape to the surface of the object.

Characteristics of pressure-sensitive tapes.

1) The bonding effect can be achieved by applying pressure (non-water, solvent, heat) for a short time.

2) Solvent evaporation and the required drying time during structural adhesive operation are overcome, and the working environment can be improved.

3) After peeling, it can be corrected when it does not contaminate the sticky object and is misapplied, and can be reused many times.

4) It is convenient to operate and make noise, which can greatly improve production efficiency and product aesthetics.

5) Partially replace the traditional screws, rivets, welding and other mechanical fixing.

6) It has a significant effect on product lightweight, cost reduction and other aspects.

7) Characteristics of solvent-based acrylic pressure sensitive adhesives:

8) High transparency, excellent weather resistance and heat resistance (-40 200).

9) Superior oil resistance, solvent resistance and water resistance.

10) Rich variety, free design of performance, and strong variability.

11) Stable performance, not easy to change color, good adhesion to the substrate.

12) The polymer has high cohesion and is suitable for products with high durability requirements.

Pressure-sensitive tape is used.

1. Clarify what kind of industry the pressure-sensitive tape is used in, the name of the product and the bonding part and its function (permanent bonding, temporary bonding, and then peeling);

2. Determine whether the glue and substrate can meet the working temperature of the product;

3. Analyze the adaptability of the material to be adhered to and the adhesive mold respecting agent;

4. Whether the pasted surface has high or low surface energy;

5. The conditions that the product needs to withstand.

6. Product operating conditions.

After peeling off, the pressure-sensitive tape can be corrected when it is not contaminated and misapplied, and can be reused many times, which is easy to operate, and can greatly improve the production efficiency and the aesthetics of the product.