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Shanghai Taoshan Packaging Machinery Co., Ltd.

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Add: No.36 Wanhua Road, Zhelin Town, Fengxian District, Shanghai

What are the requirements for the use of hot melt adhesive labeling machine

2021-06-18 18:01:15
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What are the requirements for the use of hot melt adhesive labeling machine


We know that the bonding principle of the labeling machine is that the labeling machine melts the hot melt adhesive by heating, the melted adhesive becomes a liquid, and then the hot melt hose and hot melt glue gun of the hot melt adhesive labeling machine are sent to the surface of the adhesive, and the hot melt glue is bonded after cooling. The hot melt adhesive has strong adhesion, wide temperature range, heat resistance, cold resistance, acid resistance, alkali resistance, salt medium corrosion resistance, and good thermal stability. Therefore, the use of the labeling machine needs to choose the type of hot melt adhesive. Below, we and Guangzhou Yujunjun Packaging Equipment Co., Ltd. together to look at the use of hot melt adhesive requirements and precautions:


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First, the color requirements of glue should be different. If the adhesive itself has no special requirements for color, it is recommended to use yellow hot melt adhesive. Generally speaking, yellow hot melt adhesive is better than white.


Second, surface treatment of adhesive body. The surface treatment of hot melt adhesive is not as strict as other adhesives, but the dust and oil stains on the surface of the adhesive should also be properly treated to make the hot melt adhesive play a better role in bonding.


Three, labeling machine operation time. Fast operation is the main feature of hot melt adhesive. The operation time of hot melt adhesive is usually about 15 seconds. With the wide application of modern production methods - assembly lines, the operation time of hot melt adhesives is getting shorter and shorter, such as book binding and loudspeaker manufacturing, which takes about 5 seconds.


Fourth, temperature resistance. Hot melt adhesive is sensitive to temperature. When the temperature reaches a certain level, the hot melt adhesive begins to soften. If it is below a certain temperature, the hot melt glue will become brittle. Therefore, the choice of hot melt adhesive needs to fully consider the temperature change of the environment where the product is located.


5. Stickiness. The viscosity of hot melt adhesive can be divided into early viscosity and late viscosity. Only when the early viscosity is consistent with the later viscosity, the hot melt adhesive and the adhesive can remain stable. In the production process of hot melt adhesive, it should be ensured that it has oxygen resistance, halogen resistance, acid and alkali resistance and plasticity. Due to the different material of the adhesive, the viscosity of the hot melt adhesive is also different. Therefore, different hot melt adhesives should be selected according to different materials.


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