What are the characteristics of hot melt adhesive? What industries are commonly used?

Hot melt adhesive is a chemical raw material that needs to be processed to dissolve other materials and has the function of composite bonding. Hot melt adhesive is a solid at room temperature and melts when heated to a certain temperature, becoming a liquid that can flow and has adhesive properties. Hot melt adhesive does not use any solvents during production and application, and is directly applied to the material after dissolution.

The main characteristics of hot melt adhesive are:

① There is no water or solvent in the small hot melt chamber. At room temperature, it is a solid, and at high temperatures, it is a liquid with good fluidity and is not flammable. Harmless to the human body;

② Hot melt adhesive can bond various substances, especially with stronger adhesion between porous and homogeneous materials, and the cured film has good flexibility;

③ Fast curing speed. Curing within 7-30 seconds after leaving the glue pot, without the need for drying or adding other curing agents, fully adapting to the requirements of high-speed automation;

④ Hot melt adhesive can be reheated and reused, with strong chemical resistance. Hot melt adhesive is not heat-resistant and has a low softening point. When using hot melt adhesive, heat treatment should be used to melt the solid EVA resin.

Hot melt adhesive is used for:

1. Automotive hot melt adhesive: mainly used for automotive lamp hot melt adhesive and automotive interior hot melt adhesive, with strong adhesion, high efficiency, low cost, safety and environmental protection characteristics.

2. Packaging hot melt adhesive. In the packaging industry, hot melt adhesive is used for food packaging, express bag packaging, paper boxes, wet tissue boxes, etc. It is mainly used for sealing various packaging through paper box sealing machines.

3. Label hot melt adhesive: Hot melt adhesive is widely used in the label industry, including various common logistics labels, and can also be used for removable hot melt adhesives such as furniture, ceramics, glass, and oil bottle labels. Hot melt adhesive for labels has good temperature resistance and can even be used for labeling in cold environments of minus 20~-30 ℃, so it can also be called low-temperature hot melt adhesive or frozen hot melt adhesive.

4. Hot melt adhesive for express bags: good initial adhesion, good low-temperature effect, good high-temperature performance, and good adhesion.

5. Binding hot melt adhesive. The original binding technology in the book binding industry, including thread binding and staple binding, has gradually been replaced by hot melt adhesive technology due to efficiency and quality reasons, greatly improving binding quality, accelerating binding speed, and reducing labor costs. It has become a new trend in the binding industry.

6. Glasses case hot melt adhesive: long opening time, strong structural strength, good pressure sensitivity, high fluidity.

7. Sanitary hot melt adhesive. Sanitary hot melt adhesive is mainly used for women's sanitary napkins, children's diapers, elderly incontinence products, etc. China is a populous country. The total female population in China is approximately 681.87 million. The population born in 2018 was 15.23 million. The natural population growth rate is 3.81 ‰, and the total population aged 60 and above is 249.49 million. From a data perspective, sanitary hot melt adhesives have great potential for development in the sanitary market. The product has stable performance, moderate viscosity, good fluidity, and can be operated at low temperatures.

8. Hot melt pressure-sensitive adhesive for adhesive tape: with a wide viscosity range, strong initial adhesion, and a wide range of viscosity adaptability.

9. Hot melt adhesive for shoes, hats, bags. The use of this adhesive for shoe caps and bags can prevent the product from deforming, and it is also commonly used in the shoe-making industry.

10. Furniture edge banding adhesive. In terms of home furnishings, in order not to affect the overall aesthetics, furniture is gradually being tied from nails to hot melt adhesive. This high viscosity hot melt adhesive is not only aesthetically pleasing, but also environmentally friendly and easy to use.

Generally speaking, hot melt adhesive has different applications in various industries, with different specific parameters and uses. We need to choose different corresponding hot melt adhesives according to different industries to ensure more accurate and efficient protection. Work quality. In the future, the application scope of hot melt adhesive will be more extensive because they are healthy, environmentally friendly, have high viscosity, and are non irritating, greatly reducing working time, improving work efficiency, and reducing the generation of manpower and material resources