Beware of the quality trap of hot melt adhesive: shoddy, insufficient adhesion.

The lot kinds of hot melt adhesive brands on the market are usually confusing. Many distributors and manufacturers often bring up a problem of hot melt adhesive quality when communicating with Purking technicians, because the current adhesive supply market Although it is very large, but Compared with demand, there is a structural imbalance problem. Sometimes it is found that the stock of hot melt adhesive is insufficient, and the production line cannot be stopped when the production line is rushing. Therefore, you can only find an unknown hot melt adhesive supplier in the market. When the goods are produced, the finished product comes out, what is degumming, falling apart, falling pages, and miscellaneous problems have emerged one after another. After calculating the loss and depreciation, it is found that the loss is greater than the loss of stoppage. This is because the production of high-quality hot melt adhesive products is insufficient, but Structural supply imbalances resulting from excess production of low-quality products.

Purking Technology has always advocated green and environmentally friendly hot melt adhesives, and always reminds our consumers when communicating with customers, how to choose high-quality and cost-effective hot melt adhesives, and how to adjust the processing technology according to their own production environment. For improvement, how to maintain the hot melt adhesive and hot melt adhesive equipment according to the storage conditions, etc., but sometimes it does not convey the meaning, so our hot melt adhesive company summarizes the knowledge of choosing hot melt adhesives here for all partners. refer to.

 

1. Color:

Due to the different colors of the objects to be attached, the color requirements for hot melt adhesives should be different. If the adherend itself has no special requirements for color, it is recommended to use yellow hot melt adhesive. Generally speaking, yellow hot melt is more viscous than white.

 

2. Reliability value:

For customers of hot melt adhesives, they must highly consider their trust in the hot melt adhesive brand, because we do not want to place our product production on a brand that has a bad reputation, and the price and quality do not seem to be asymmetrical. on hot melt glue.

 

3. Working time:

Fast operation is a major feature of hot melt adhesives. The working time of hot melt adhesive is generally about 15 seconds. With the wide application of first-class production lines in modern production methods, the working time of hot melt adhesive is getting shorter and shorter, such as book binding and speaker manufacturing. 5 seconds or so.

 

4. Anti-temperature:

Hot melt adhesives are more sensitive to temperature. When the temperature reaches a certain level, the hot melt adhesive begins to soften. Below a certain temperature, the hot melt adhesive will become brittle. Therefore, the choice of hot melt adhesive must fully consider the temperature change of the environment where the product is located.

 

5. Stickiness:

The viscosity of hot melt adhesive is divided into early viscosity and late viscosity. Only when the early viscosity and late viscosity are consistent, can the hot melt adhesive and the adherend remain stable. In the production process of hot melt adhesive, it should be ensured that it has anti-oxidation, anti-halogen, anti-acid and alkali and plasticity. Depending on the material of the material to be attached, the viscosity of the hot-melt adhesive is also different. Therefore, different hot-melt adhesives should be selected according to different materials.