Wrap film and Stretch Film are used for packaging all kinds of products sales and transportation, play a role in protection, stability and cover.The two names refer to the same thing. The concept of wrapped film is broader, and wrapped film is also called stretched film. Some wrapped films can be stretched, while some wrapped films cannot be stretched, or the stretching rate is low.Wrap film, also known as stretch film and heat-shrinkable film, is the first PVC winding film produced in China with PVC as the substrate and DOA as plasticizer and self-adhesive.But its cost is high, PE stretch film first with EVA as self-adhesive material, and taste, then the development of PIBV, LDPE as self-adhesive material, the substrate is now LLDPE, including C4, C6, C8 and metal PEMPE.
From the single-storey development to the second and third floors;Now the flow method is mainly used to produce LLDPE stretch film, and the early LLDPE stretch film is mostly blown film.This is because the spread line production has the advantages of uniform thickness and high transparency, which can be applied to the requirements of high rate predrawing.The application field is limited because the single-layer flow delay can not be single-side viscous.Single and double-layer flow extension is not as wide as three-layer flow extension in data selection, and the formula interest is also high, so the three-layer co-extrusion structure is more ideal.High quality stretch film should have high transparency, high longitudinal elongation, high yield point, high transverse tear strength, good puncture performance, etc.Stretch film can not only meet the requirements of moisture-proof, dustproof, touch proof, transparent display and other functions of products, but also increase the appearance of products attractive.It can also be used to replace all kinds of paper boxes, not only save packaging costs, but also in line with the packaging trend.It is widely used in packaging of food, medicine, disinfected tableware, sports and sports articles, craft gifts, printed matter, hardware and plastic products, telephones, electronic appliances, etc.
The main business of our company are: Sealing Tape, Stretch Film, Strapping, Polythene Sheets, Transparent Tape, Colored Tape. Please feel free to contact us.
