Solutions to common problems in the use of hot melt adhesive strips for medical protective clothing

Today, the epidemic situation in China has basically been effectively controlled, but the production of protective clothing is still in a state of tension. At present, many manufacturers have no experience in the production of protective clothing in the early stage, and also give orders in the crisis during the epidemic, so there will be a lot of confusion in fabric selection and layering. This time, the manufacturer of hot melt adhesive film has specially sorted out the common problems and solutions in the use of hot melt adhesive for medical protective clothing, hoping to help the enterprises engaged in the production of protective clothing.

The common problems in the pressing process are: the fabric is not temperature resistant, cracks occur in the pressing process, the adhesive feels non sticky, and it is easy to open the glue the third day after pressing. This will lead to failure of the sealant and disqualification of the hydrostatic test. The following reasons are comprehensively analyzed for reference:

1、 Solution to fabric holes during production:

1. Replace the low-temperature hot melt adhesive strip;

2. Lower the temperature. If it cannot stick, please refer to 1;

3. Reduce air volume;

4. Slow gun feeding time;

5. Accelerate the gun withdrawal time. 3. 4 and 5 links can effectively prevent the fabric from burning.

2、 Non stick solution:

1. As we know, the gun temperature is very low and does not reach the melting point of the adhesive strip. The test method is very simple. Find a piece of cotton cloth and click it. If it can be stuck, it will not be a problem. If the bonding is poor, the gun temperature test can be appropriately increased. If there are holes in the test, refer to the corresponding solution;

2. The material is not compatible with the current Mi'ao bird varieties on the market, as well as dozens of fabrics that can not be stuck by adhesive strips. It is necessary to find hot melt adhesive enterprises with R&D capabilities to conduct targeted R&D;

3. For the fabric composite film with PE and TPU as the main raw materials, you can consult the fabric manufacturer about the coating materials. Generally, high and low temperature EVA tape, polyolefin tape and other types can be used as film coated PE materials. PU film and TPU film can be selected.

3、 After being glued, the glue will be opened after a few days. Solution:

The surface of the fabric covering is treated, and the bonding is false. There will be a good phenomenon in the process of bonding, and it will not happen in a few days. This phenomenon is very common in the hot melt adhesive bonding industry. High and low temperature fat dissolving adhesive strips can be selected to facilitate permeability.

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