What are the types of bag sealing?
Plastic bags can be divided into three sides seals, middle bottom seals, three-dimensional seals and sheet materials according to bagging methods.
The first and third sealing plastic packaging bags are sealed around the packaging bag. The front and back dimensions are all finished dimensions, and have a certain sense of integrity. The design is unconstrained and the front and rear designs have certain consistency. Since 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.
Second, in the bottom seal plastic packaging bag is the back seal, the front size of 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, expand, Integrated design, plus 1cm seal on the left and right sides, front and back are also on the same version of the roller.
Third, the three-dimensional sealing plastic bags is based on the bottom seal, both sides plus three-dimensional side, the front back, side 3 are also on the same version of the roller.
4. Because of the limitation of printing materials, the plastic bag of sheet material must be designed separately and separated from the front and back. It cannot be presented on the same plate cylinder at the same time.