The application of hot melt adhesive.

Hot-melt adhesive bonding is to use a hot-melt glue machine to melt the hot-melt glue through heat, and the glue after melting becomes a liquid, which is sent to the adherend through the hot-melt glue tube and hot-melt glue gun of the hot-melt glue machine. surface, the hot melt adhesive is cooled and the bonding is completed. Purking hot-melt adhesive has been deeply involved in the market for many years, and has accumulated profound experience in hot-melt adhesive production technology. The following will introduce several uses of hot-melt adhesive:

 

1. Hot melt pressure sensitive adhesive

Mainly used for women's sanitary napkins, children's diapers, sick mattresses, elderly incontinence products, etc. The latter in particular, as the population structure of many countries continues to age. The demand for elderly incontinence products will increase rapidly in the future. Hygiene requirements: odorless, environmentally friendly and non-irritating to the skin.

 

2. Hot melt adhesive for edge sealing of furniture

Usually, most of the furniture is made of fiberboard, shavings or sawdust board, and the edge of the furniture board must be bonded with hot sol to increase the beauty and make it resemble solid wood furniture.

 

3. Hot melt adhesive for packaging and bookbinding

At present, most of the packaging and sealing of food, beverages, instant noodles, cigarettes, beer, medicine, etc. are done by hot sol through a sealing machine. The book binding industry has now abolished the old thread and staple binding, and switched to the hot-melt bonding process, which not only improves the binding quality, but also greatly speeds up the binding speed.

 

4. Hot melt adhesive for fabric

Mainly used for the production of shape, shoes and hats. Clothing using the glue not only has a crisp and plump appearance quality, but also has the characteristics of natural flatness after washing and can be worn without ironing. Shoes and caps using the glue are light and breathable, have good shape retention, are especially used in the shoemaking industry, and have the advantages of comfortable wearing and reduced shoe odor.

 

5. Thermoplastic powder coating

There are two main categories of powder coatings: polyethylene (CDPE) and polyvinyl chloride (PVC). Used for fish cages, road guardrails, bicycle baskets, racks, refrigerator shelves, fan covers, etc. It can be made into various colors according to the needs, and it can be painted on the surface of metal products to protect and decorate.

 

6. Multi-purpose solvent-based hot melt adhesive

In the production of many products, such as: hot melt transfer printing, liquid crystal material sealing, wallpaper anti-counterfeiting, calligraphy and painting pasting, computer printing, food production date typing, wire and cable agent coding, etc. Some granular or powdered dosage forms do not need to be made into liquid in the presence of a suitable solvent, and coated on a certain substrate to obtain a thin and uniform film, which can be used in the production of the subsequent process. Due to the different types of solutes (hot sols), solvent-based hot sols for various purposes can be prepared.

 

7. Application of hot melt adhesive and hot melt adhesive machine in furniture industry

Hot melt adhesive for furniture is a kind of adhesive specially used for sticking man-made boards. It is an environmentally friendly, solvent-free thermoplastic adhesive. When the hot melt adhesive is heated to a certain temperature, it changes from a solid state to a molten state. From the late 1970s, hot melt adhesive began to enter the wood industry, used for edge sealing, plywood core, board splicing, furniture tenon joint, etc. The early hot melt adhesive equipment mainly relied on the United States, West Germany, Italy and other countries. Equipment, with the maturity and stability of hot melt adhesive equipment in my country, the selection and use of hot melt adhesive equipment suitable for the specific conditions of each furniture factory can not only improve the quality and grade of furniture, but also improve production efficiency and reduce panel repairs. It is difficult to reduce the labor intensity of workers.

Its characteristics are:

（1）. The solid content is 100%, and it has void filling properties, which avoids the defects such as deformation, dislocation and shrinkage of the adhered parts caused by edge curling, air bubbles and cracking. Because there is no solvent, the moisture content of wood does not change, and there is no danger of fire and poisoning.

（2）. Fast bonding, the interval between gluing and bonding is only a few seconds, the saw head and trimming can be completed within 24 seconds, no drying time is required, and it can be used in a continuous and automated wood bonding line, which greatly improves production. Efficiency, saving plant costs.

（3）. Wide range of uses, suitable for bonding various materials.

（4）. It can be bonded several times, that is, hot melt adhesive is applied to the wood. When the requirement is not met due to cooling and solidification, it can be reheated for secondary bonding.

Purking Technology (Zhejiang) Co., Ltd. was established in 2014. It is a hot melt adhesive supplier integrating R&D, production, sales and service. The products mainly include PUR hot melt adhesive and its production and application equipment. The company has more than 1,000 workshops Square meters, with advanced science and technology and strict quality management, to provide a complete set of automated adhesive solutions for the hot melt adhesive industry.