stretch film wide use stretch film wide use Wide application of stretch film Winding film, also known as stretch winding film, stretch film, heat shrinkable film. Wuxi winding film has the characteristics of high transparency, good longitudinal elongation, high yield point, high transverse tearing strength, good puncture resistance, good self-adhesive, high shrinkage rate, compact packaging, no loosening and so on. Wuxi winding film is widely used in chemical raw materials, fertilizer, food, mechanical and electrical products, textile products and other single or pallet packaging. Wuxi tape Sealed packaging This packaging is similar to shrink film packaging. The tray is wrapped in the tray and then the ends of the film are thermally sealed together by two thermal grippers. This was the earliest form of use of wound film, leading to the development of more packaging forms. Manual packing This packing method is one of the most simple wound film packaging. The winding film is mounted on a […]

Factors affect surface tension of stretch film Factors affect surface tension of stretch film The surface tension of the film is directly related to the surface free energy of the film, which is determined by the molecular structure of the film itself. Therefore, there are many factors affecting the surface tension of the wound film. The main contents are as follows: 1. For non-polar polymers, the surface free energy and surface wet tension of the winding film are relatively low, generally around 30dyn/cm. Theoretically speaking, if the surface tension of the object is less than 33dyn/cm, ordinary ink or adhesive will not adhere firmly, so it is necessary to carry out surface treatment; 2.Polyester (PET, PBT, PEN, PETG) is a polar polymer with high surface free energy and surface wet tension in excess of 40 dyne/cm. However, in order to increase the adhesion between the vacuum aluminized layer and the BOPET film surface, surface treatment is required to further improve the surface wet […]

What the role stretch film manufacturer playing Stretch film brings great convenience to logistics industry. Let’s go through the winding film manufacturer to introduce us to its functions What the role stretch film manufacturer playing First of all, stretch wound film can maintain goods, reduce circulation costs and packaging efficiency, but also facilitate transportation and improve transportation capacity. Secondly, it also facilitates the storage of materials. It is very convenient to transfer and unload materials in and out of the warehouse, which provides convenient conditions for storage operation. Third, it can avoid damage and deformation of materials and reduce the impact of transportation and other logistics links. Fourth, it can also avoid chemical changes in the material. Material packaging has the function of isolating moisture, moisture, light and various harmful gases in the air to a certain extent.

Who is the trusted manufacturer of stretch film Who is the trusted manufacturer of stretch film In our daily life, stretch wrapping film is also very common. Its shadow can be seen in the transportation of products from all walks of life, especially in the transportation of major products. It is the most widely used stretch film. But now there are also many manufacturers’ stretch winding film is processed from poor quality materials, the viscosity is not well controlled, it is easy to drop the glue, and even pollute the product surface seriously. Shandong Druna International Trade Co., Ltd. is a manufacturer integrating production, sales and service. Its main products are stretch film, packaging film, winding film and other packaging materials. All products have passed the national environmental standards. Packaging machines, straps and foam film are selling well in the consumer market. Founded in 2000, Shandong Druna International Trade Co., Ltd. is an innovator and manufacturer […]