Is hot melt adhesive the same as pressure sensitive adhesive, the difference between thermal adhesiv

Hot melt adhesives are not the same as pressure sensitive adhesives, and the specific differences are as follows:

First, the raw materials are different.

Hot melt adhesive: The raw materials of hot melt adhesive are ethylene and vinyl acetate.

Pressure-sensitive adhesives: The raw materials of pressure-sensitive adhesives are rubber or resin.

Second, the production process is different.

Hot melt adhesive: Hot melt adhesive is made by copolymerization of ethylene and vinyl acetate under high temperature and pressure.

Pressure-sensitive adhesives: Pressure-sensitive adhesives are made of acrylic monomer copolymerization or rubber by thermal processing.

Third, the characteristics are different.

Hot melt adhesive: Hot melt adhesive has the characteristics of high added value, high adhesive strength and fast speed.

Pressure-sensitive adhesive: Pressure-sensitive adhesive has the characteristics of pressure sensitivity, low curing temperature, good viscosity and good temperature resistance.

Encyclopedia - Pressure Sensitive Adhesive.

Depending on which one, hot melt adhesive is a large category of adhesives, which are classified according to the state of the adhesive, including solvent glue, emulsion glue, solid glue, and hot melt adhesive. This adhesive is an adhesive that melts only when heated.

There are many such adhesives, not only for pressure-sensitive adhesives, but also for some that are not pressure-sensitive.

Pressure-sensitive adhesives are pressure-sensitive glues that are classified according to their function and there are many types.

These two types of adhesives are classified according to different classification standards.

One of the types of hot melt adhesives is hot melt pressure sensitive adhesives, and there are other types such as EVA and PA. Pressure-sensitive adhesives are available in hot melt and solvent-based, if you still have questions, you can continue to ask me.

They're two different classes, but there's a crossover like hot melt pressure sensitive adhesives.

If you choose, it still depends on what you are using to choose the right glue according to your needs.

No, Beijing Glorious Century thinks:

What is the difference between hot melt adhesives and pressure sensitive adhesives?

As the name suggests, hot melt adhesive is an adhesive that is melted and cooled by heating and bonding.

For example, we are familiar with asphalt for paving roads, adhesives for processing man-made panels. The advantage is that large-scale mechanized bonding can be realized, solvent-free, pollution-free, and green environmental protection. The disadvantage is that the heat resistance is poor, and the bonded finished product should not be exposed to the sun at high temperature and outdoors.

The pressure-sensitive adhesive is a kind of adhesive that can be bonded without temperature, pressure, such as finger pressure, such as medical tape, medical tape, infusion patch, electrician or household tape, transparent adhesive tape, etc., the disadvantage is poor cold resistance and durability.

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.

Summary. How to melt hot melt adhesive quickly, hello, 1, you can use alcohol to remove the hot melt adhesive, it is best to use anhydrous medical alcohol, not industrial alcohol, drop the alcohol on the hot melt adhesive, or use a cotton swab dipped in some alcohol to smear the hot melt adhesive, with the hot melt after hardening, it can be easily removed. 2. Use wind oil essence on the hot melt adhesive and let the hot melt adhesive slowly dissolve repeatedly.

This method is safer and more environmentally friendly, but it is slower. 3. You can take a small Xiaoice bag and apply it to the hot melt adhesive, wait quietly for a few minutes, and then buckle it off. 4. Or put the objects glued with hot melt adhesive in the refrigerator and freeze them for a while, and when you take them out again, you can easily remove the hot melt adhesive.

I hope my answer is helpful to you, and finally I wish you good health and a happy mood again! <>

Thank you. How to quickly melt hot melt pressure sensitive adhesive, hello, 1, you can use alcohol to remove hot melt adhesive, it is best to use anhydrous medical alcohol, instead of imitation old alcohol, drop alcohol on the hot melt adhesive, or use a quivering cotton swab dipped in some alcohol to smear on the hot melt adhesive, with hot melt hardening can be easily removed. 2. Use wind oil essence on the hot melt adhesive and let the hot melt adhesive slowly dissolve repeatedly.

This method is safer and more environmentally friendly, but it is slower. 3. You can take a small Xiaoice bag and apply it to the hot melt adhesive, wait quietly for a few minutes, and then buckle it off. 4. Or put the objects glued with hot melt adhesive in the refrigerator and freeze them for a while, and when you take them out again, you can easily remove the hot melt adhesive.

I hope my answer is helpful to you, and finally I wish you good health and a happy mood again! <>

How to mix hot melt pressure sensitive adhesive and pharmaceutical powder into a paste.

Dear, hello, The hot-melt adhesive plaster produced by ourselves is made by using medical hot-melt pressure-sensitive adhesive and rosin to be heated together and completely melted and then added with powder.

The essential difference may be the difference in chemical structure and performance, application field, characteristics, etc. Therefore, there are their own advantages and disadvantages and where they are applicable.

Any encyclopedia has it:

Hot melt adhesive is a kind of plasticity (I don't know what plasticity is) adhesive, its physical state changes with temperature change in a certain temperature range, and the chemical properties remain unchanged, non-toxic and tasteless, and it is an environmentally friendly chemical product.

This should be noted: whether there is toxicity or not, how high the degree of environmental protection is, it depends on the product technology of the manufacturer, the quality test results, not all products are the same, otherwise, there will be no difference).

The hot melt adhesive is composed of matrix resin + tackifier + plasticizer + antioxidant + filler, and the melted glue becomes a liquid, which is sent to the surface of the bonded object through the hot melt hose and hot melt glue gun of the hot melt adhesive machine, and the bonding is completed after cooling.

Pressure-sensitive adhesives. Pressure-sensitive adhesives are mainly acrylic and rubber-based solvent-based or latex adhesives, and the advantage of hot-melt pressure-sensitive adhesives is that they are solvent-free, so there is no air pollution, and the productivity is high. But the disadvantages are heat resistance and cohesion.

Lack of force. Some information says: (Not all products are like this, it depends on the technology!!

It has long-lasting high stickiness.

Apply with only your hands or fingers.

No activation by water, solvent or heat is required.

There is a firm adhesion.

There is sufficient cohesion and elasticity.

The longer it passes, the stronger it sticks.

> different needs, things with different properties are manufactured.

The performance of pressure-sensitive adhesive varies according to the different composition, the rubber type pressure-sensitive adhesive is mainly based on natural rubber as the main raw material, due to the high relative molecular weight, low glass transition temperature, and good compatibility with tackifying resin, so the prepared pressure-sensitive adhesive has good adhesion, low temperature performance, fast adhesion and adhesion are relatively good, and the main disadvantage is poor aging resistance. Acrylic pressure-sensitive adhesive is mainly made of acrylic monomer copolymerization, with good transparency, cohesive strength and adhesive performance, especially for the polar adherent surface and porous surface with good bonding performance, and extremely aging resistance. Good.

The curing method is not the same, the pressure sensitive adhesive I have less contact, and the hot melt adhesive needs to be melted at high temperature and then reheated and cured.

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.

Today's hot melt adhesives are environmentally friendly and do not contain formaldehyde, so they can be used with confidence. Hot melt adhesive is a kind of plastic adhesive, its physical state changes with temperature within a certain temperature range, and the chemical properties remain unchanged, it is non-toxic and tasteless, and is an environmentally friendly chemical product. Hot melt adhesive is an important category of adhesive industry, with 100% solid content, no solvent, environmental protection and non-toxic, fast curing characteristics, widely used in automated packaging, sanitary products, label tape, medical, automobile, construction, furniture, printing and binding, shoemaking, clothing and other industries, usually refers to the solid at room temperature, when heated to a certain temperature will melt into a viscous liquid, coating, wetting the sticky, after pressing, cooling to room temperature, in a few seconds to complete the bonding of adhesives.

Hot melt pressure sensitive adhesive is a kind of pressure sensitive adhesive, and it is also a general term for hot melt adhesive. Hot-melt adhesive is solid, easy to pack, transport, store, solvent-free, non-polluting, non-toxic; As well as the advantages of simple production process, high added value, high adhesive strength and fast speed, it is favored.

Hot melt pressure sensitive adhesives are mostly used in medical and sanitary materials, such as wet wipes covers, diapers, sanitary napkins, etc., and will not cause any harm to the human body.