Precautions for use of hot melt adhesive in hot melt adhesive coater

1. Selection of hot melt adhesive

The color requirements of hot melt adhesive coater should be different. If the object to be followed has no special requirements for color, it is recommended to use yellow hot-melt adhesive. Generally speaking, yellow hot-melt adhesive is more viscous than white.

2. Surface treatment

Surface treatment of substrate. Hot melt adhesive coating machine the surface treatment of hot melt adhesive on the object to be followed is not as strict as that of other adhesives, but the dust and oil stain on the surface of the object to be followed should also be properly treated in order to make the hot melt adhesive play a better role in bonding.

3. Bonding time

Fast operation is a major feature of hot melt adhesive and pressure-sensitive adhesive. The operation time of hot melt adhesive is generally about 15 seconds. With the wide application of modern production lines, the operation time of hot melt adhesive of hot melt adhesive coater is required to be shorter and shorter. For example, the operation time of hot melt adhesive for book binding and speaker manufacturing is required to be about 5 seconds.

4. Temperature resistance range

Hot melt adhesive coater hot melt adhesive is sensitive to temperature. When the temperature reaches a certain level, the hot-melt adhesive begins to soften. If it is lower than a certain temperature, the hot-melt adhesive will become brittle. Therefore, the temperature change of the product environment must be fully considered when selecting the hot-melt adhesive.

5. Select the hot melt adhesive according to the process

The viscosity of hot-melt adhesive rod can be divided into early viscosity and late viscosity. Only when the early viscosity is consistent with the later viscosity, can the hot melt adhesive of sanitary materials and the adherend remain stable. In the production process of hot melt adhesive, it should be guaranteed to have oxygen resistance, halogen resistance, acid and alkali resistance and plasticization. The stickiness of the hot melt adhesive varies with the material of the object to be followed. Therefore, the hot melt adhesive of the coater should be selected according to different materials

Yitong industry and trade (Shanghai) Co., Ltd. is a company providing new products and new process solutions. We not only provide equipment, but also provide new European technologies and processes to Chinese customers through the carrier of equipment. The main equipment is precision coating, mainly including lithium battery coating, optical film coating, brand tape coating, etc. the industries covered include battery, printing, electronics and precision chemical industries.