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Several detailed classifications of packaging bags?

by:FAST SINCERE     2020-03-20
1. Three-layer Kraft paper bag: three-layer or multi-layer Kraft paper bag, which can be coated with PP material on the paper to prevent water; Imported Russian Kraft paper or Canadian white kraft paper. An inner film bag can be added. Color Offset printing is also available. The form is a seam opening, which is environmentally friendly and hygienic. 2. Paper-plastic composite bag: also known as three-in-one composite paper bag, it is a small bulk container, which is mainly transported by manpower or unit. It is convenient for shipping small bulk powder granular materials, with a high appearance and easy loading and unloading, it is one of the most popular and practical ordinary packaging materials. Process Description: refined kraft paper is used outside, plastic woven cloth is used inside, plastic particles PP are melted by high temperature and high pressure, and Kraft paper and plastic woven cloth are compounded together. Additive endometrium bag. The form is the same as the bottom pocket. It has the advantages of good strength, waterproof and moisture-proof. 3. Square bottom open paper bag: also known as: square bottom open pocket. It is a kind of packaging bag that takes into account both traditional ideas and advanced ideas. The bottom of the bag is square, so that the overall effect of the bag can be compared with the square bottom valve pocket; The opening is flat, which is the same as the packaging and sealing method of the bottom pocket. It is suitable for the traditional sewing and sealing method. A layer of plastic film can be added in the middle of the paper to package the products that need moisture. 4. Square bottom valve pocket: Commonly known as: bottom bag, is a kind of packaging bag that is born under the guidance of improving packaging efficiency and convenient transportation. The overall appearance of the bag is square, which is very suitable for stacking transportation; The valve port at the bottom is convenient for filling materials and easy to seal. New environmentally friendly packaging suitable for canning equipment can be divided into paper-plastic composite valve pockets or multi-layer paper valve pockets. In order to facilitate filling, the bag body can be punched to facilitate gas discharge and prevent the bag from bursting during filling. A layer of plastic film can be added to the middle of the paper for packaging products that need moisture. 5. Open paper bag at the bottom of the seam: open pocket at the bottom of the seam: it is a traditional form of packaging bag used by many enterprises. The bottom is sewn and sealed with high-strength fiber thread and contains easy-to-pull opening, which is convenient for unpacking. This bag can be used with plastic bags and aluminum foil bags. Products suitable for packaging: chemical raw materials, plastic materials, dry powder building materials, fine minerals, nano materials, food additives, etc.
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