【Chinese Packaging Network News】PE stretch film has the advantages of strong toughness, high elasticity, tear-proof, high viscosity, thin thickness, cold resistance, heat resistance, pressure resistance, dustproof, waterproof, single-sided adhesive and double-sided adhesive, etc. . When used, it can save materials, save labor, save time, and is widely used in papermaking, logistics, chemicals, plastic materials, building materials, food, glass and so on. PE stretch film plastic bags can be divided into three sides seal, middle bottom seal, three-dimensional middle seal and sheet material according to the bag-making method.
1. Three side seals are sealed around the packaging bag. The front and back dimensions are all finished dimensions. It has a certain sense of integrity. The design is unconstrained, and the front and rear designs have a certain degree of consistency. Because the front and back dimensions are the same, the front can be designed to allow the back and front to echo. At the time of plate making, they are arranged on the same platen roller.
2 in the bottom seal is sealed on the back, the front size is the finished product size, the back is divided into two equal parts, and the sum of its width is equal to the width of the front, usually in the design is the front and back, integrated design, and Add 1cm seals to the left and right, front and back also on the same platen roller.
3. The three-dimensional seal is based on the bottom seal, plus three-dimensional sides on both sides, the front and back sides are also on the same roll.
4. PE stretching film material is limited by the printing material, its front and back must be separately designed, separate plate making, can not appear on the same plate cylinder.
