How to avoid crystal point in stretch film production?

 Stretch film is a relatively thin film. It has been widely used in various digital products. There are more and more manufacturers of stretch film, and the competition among enterprises is also increasing. Different companies make stretch films. The materials are different, but it is inevitable that you will encounter some quality problems. So how to avoid the occurrence of crystal points in the production of stretched film, the following is introduced by the stretched film manufacturer by Zhiteng.

The appearance of crystal points is a common quality problem of stretched film materials. Crystal points refer to pits on the surface of stretched film materials, which are also called bright spots. They mainly appear on three-layer stretched film materials. The main cause is Because silica gel is used for synthesis, silica gel has fluidity. If the surface of the stretched film material encounters the extrusion of some small particles, crystal points will be formed. The best way to avoid crystal points is to protect the surface of the stretched film.

The rainbow pattern is a problem often encountered in the current stretch film materials, because the surface of the stretch film material has to be hardened, and the hardening has to be processed at a high temperature. The bathroom will form a strip of colorful stripes on the surface.

Therefore, there are more and more stretch film merchants on the market, and stretch film materials are not the same. Due to the low threshold of the stretch film industry, there are many indiscriminate refills. Therefore, the quality cannot be guaranteed.

Unitization: This is one of the biggest characteristics of stretch film packaging. With the strong winding force and retraction of the film, the product is compactly and fixedly bundled into a unit, so that the scattered small pieces become a whole, even in unfavorable environments, the product does not have any looseness or separation, and is not sharp and sharp. The edges and stickiness to avoid damage.

Primary protection: The primary protection provides the surface protection of the product, forming a very light and protective appearance around the product, so as to achieve the purpose of dustproof, oilproof, moistureproof, waterproof and anti-theft. It is particularly important that the stretch film packaging makes the packaged items evenly stressed and avoids damage to the items caused by uneven force, which is not possible with traditional packaging methods (bundling, packaging, tape, etc.).

Compression fixity: The product is wrapped and packaged by the retraction force of the stretched film to form a compact, space-saving unit, so that the pallets of the product are tightly wrapped together, which can effectively prevent the transportation process The mutual dislocation and movement of the products, the stretchable stretch film and the adjustable stretch force at the same time can make the hard products stick tightly and shrink the soft products, especially in the tobacco industry and the textile industry, which has a unique packaging effect.

Cost saving: The use of stretch film for product packaging can effectively reduce the cost of use. The use of stretch film is only about 15% of the original box packaging, about 35% of the heat shrinkable film, and about 50% of the carton packaging. At the same time, it can reduce the labor intensity of workers, improve packaging efficiency and packaging quality.