The production process of stretch film forming

Friends who have seen thin stretch wrap films have this question in their hearts: how is such a thin film formed? How to produce stretch wrap films with uniform thickness?


Stretch film production method:
1. Increase the temperature of the film and stretch it. The main work is to pass the flat stretchable film to the heating plate to increase the plasticity of the film, and then stretch the film into the same shape as the mold through compressed air and air extraction.

2. Extract the air in the film and heat-seal packaging. The main work is after the confluence of the upper and lower membranes. A vacuum state is formed, the upper film is in contact with the upper heat-sealing plate, the film is heated by the heat of the heat-sealing plate, the heat-sealing layer material of the upper and lower films is melted, and then squeezed by pressure, the upper and lower films are bonded together and become a whole , to ensure that the product packaging does not leak.




 
Stretch film is the role of:
The stretch film can bundle the products together compactly and fixedly, and the stretch film has super strong winding force and retractability. Bundle the scattered small pieces into a whole to ensure that the product does not loosen or separate under favorable circumstances.

Can play a very good primary maintenance role, Linyi stretch film can form a protective appearance around the product. To achieve dustproof, waterproof, moisture-proof, oil-proof and other purposes, using Linyi stretch film packaging products at the same time can greatly reduce the cost of use, and its packaging interest is only about half of the carton packaging.

 
Application fields of stretch film
To improve production efficiency, Linyi stretch film is widely used in the container cost of foreign trade export, food and beverage, irrigation, papermaking, dyes, plastic chemicals, glass ceramics, electromechanical castings and other products. It can also prevent the damage of the goods during the handling process, and play the role of dustproof, moisture-proof and cleaning.