Why stretch wrap film is not sticky, and what factors are related?

Stretch wrap film is produced with PE as raw material, which is widely used in cartons, containers and large products packaging. The adhesion of all stretch wrap film is very important, but why some stretch wrap film is not sticky? What factors are related to it?


That is because the stretch wrap film you choose is not a good stretch wrap film. It is a brand new packaging material in terms of material characteristics of superior quality, and its material has the characteristics of ultra-thin, strong, transparent, self-adhesive and low temperature resistance, etc. It is an ideal packaging material.


It has two types of adhesiveness: single-sided and double-sided. Wrapping film is characterized by good buffer strength, puncture resistance and tear resistance, thin thickness and good performance and price. It has high tensile strength, anti-tear strength, transparency and good shrinkage, 400% pre-stretch multiplier, and can be set, waterproof, dustproof, anti-scattering and anti-theft, etc.


Of course, because of the different types of wrap film, the raw materials used for production are different, some are PVC as the base material and DOA as the plasticizer and self-adhesive to produce PVC wrap film. PE stretch film is EVA as the self-adhesive material, and the base material is LLDPE-based winding film comes out LLDPE stretch film, this Bi winding film can be developed from the beginning of the single layer to the present to two, three layers. Therefore, different base materials are used as raw materials for winding film, and their advantages and uses are also different.


Wrapping film requires good peel adhesion as well as good lap adhesion. The higher the peel adhesion, the less likely the pallet will fall apart and the better the film will be sealed; the higher the lap adhesion, the less likely the film will be displaced longitudinally, so a balanced peel adhesion and lap adhesion of the film is needed to obtain a solid package.


The adhesion of wrap film is positively related to the amount of PIB added. However, after the PIB addition exceeds 3%, the improvement of self-adhesion of the film becomes less obvious. If the PIB addition continues to increase, the PIB will precipitate into lumps on the film surface, resulting in uneven self-adhesion of the film, and even the film roll is difficult to open. In order to ensure the final performance of the winding film and to consider the cost of raw materials, the addition of PIB should be controlled between 1~3%.


In order to facilitate production, high concentration PIB tackifying masterbatch for the production of polyethylene wrap film has been developed. This masterbatch is made by mixing PIB and polyethylene in a certain ratio, which is similar to the form of various masterbatches often used in the production of plastic products, has good fluidity and is easy to use.






What are the characteristics of a stretch wrap film with adhesion?
A good stretch film has good electrostatic self-adhesive, double-adhesive and other excellent characteristics. It can make the goods and packaging closely connected as one, and achieve the neatness and beauty of the surface of the goods. Thus, it can ensure that all kinds of goods can be moved and transported due to various reasons such as bumps, tilts, and even scattered problems. It greatly improves the safety of cargo transportation and the rate of loss of goods for customers, and gives customers peace of mind during use and brings profits to individuals and enterprises.

I believe you understand why stretch wrap film is not sticky, and what factors are related to the problem, you can determine what kind of stretch wrap film is high quality, we try to avoid choosing poor quality products, if you choose substandard packaging materials, really bring immeasurable losses to the enterprise!