Zipper Bag Material Flexibility Good Moisture-proof Waterproof

Zipper bag can be divided into ordinary zipper bag, file zipper bag and Invisible zipper bag, general zipper bag general shape, material used woven bag, transparent PE or OPP plastic film made from, zipper for ordinary plastic zipper, generally used for packaging more large-scale goods, such as: quilt outside the packaging, large-scale simple luggage bags, File Zipper bag can be loaded with more documents, pens and small items. Choose the unique cold-resistant PVC double-layer material, the material flexibility is good. Moistureproof waterproof, suitable for study, living home travel use.

Invisible zipper bag, also called a bone zipper bag.

Stealth zipper bags are generally composite flexible packaging, composed of polypropylene opp, polyester pet, nylon, matte film, aluminum foil, polypropylene, polyethylene, Kraft paper and even woven bags, such as the combination of materials (generally $number layer).

Stealth zipper bag Widely used, can be applied to industrial packaging, packaging, food packaging, medicine, health, electronics, aerospace, science and technology, military and other fields;

Invisible zipper bag is generally aluminum plastic composite bag, is a package of various advantages of packaging products, low cost, exquisite printing; the product has: anti-static, anti-ultraviolet, moisture-proof oxygen insulation, cold resistance to high temperature, the preservation of easy to seal the strong characteristics of oxygen;

Featured products are: Kraft zipper bag, Paper aluminum composite zipper bag, aluminum plastic self-supporting zipper bag, electrostatic shielding zipper bag, mesh electrostatic zipper bag, anti-vibration electrostatic zipper bag, static electroplating aluminum zipper bag and various day I zipper bags and so on

The following four kinds of problems are often encountered in the process of zipper bag processing:

1,zipper and bag body sealing part is not smooth;

2,the zipper and bag body sealing parts appear partial delamination phenomenon;

3,the two ends of the zipper and the edge of the bag, the intersection of the part of the "Dead pleat";

4,the two ends of the zipper and the side of the bag to the edge of the intersection of the part of the phenomenon of delamination.

The reasons for the above four types of problems are:

1.the shrinkage of the zipper itself is greater than the thermal shrinkage of the composite film;

2.The melting point of the zipper is greater than or equal to the melting point of the hot sealing film;

3.The cross section of button on the zipper is too large;

4,zipper bag making machine on the local hot sealing rod design is unreasonable, it is recommended that the use of ultrasonic heat sealing device;

5.The design of local heat sealing head is unreasonable (too small);

6,ultrasonic heat sealing device output power is insufficient or insufficient pressure;

7,the ink layer heat resistance is insufficient;

8.The hardness of silicone rubber gasket is not suitable.