Valve bag introduction

Valve bags are small bulk packaging containers that are convenient, neat, and well sealed. They are one of the most popular packaging forms and a new type of environmentally friendly packaging product, especially suitable for export packaging. When used, they can be fed from the top or bottom valve port, and special filling equipment is used. After filling, the materials are formed into a three-dimensional shape, and the stacking is neat and beautiful.

Features of valve bags: Valve bags have the characteristics of improving packaging efficiency, convenient transportation, strong firmness and low breakage rate.

Valve bag classification: Valve bags can be divided into the following categories according to different materials:

Paper-plastic composite valve bag is made of plastic woven bag (referred to as base fabric) as the base material, which is compounded by cast film method (cloth/film/paper composite is three-in-one);

The kraft paper valve bag is made of kraft paper (kraft paper is mainly divided into imported kraft paper and domestic kraft paper). The number of layers of kraft paper generally ranges from one to six layers depending on the purpose, and a film or PE plastic film can be added in the middle.

PE valve bag : commonly known as heavy valve bag, made of polyethylene film, the thickness of the film is generally between 8-20 threads.

Low melting point valve bag: made of low melting point polyethylene film, the thickness of the film is generally between 8-20 threads, suitable for large-scale production on the assembly line of chemical companies, which can reduce pollution and reduce the labor intensity of workers.

Composite valve bag: It is a new type of material that has the printability of paper and the moisture resistance and firmness of plastic.

Printing of valve bags: generally one to four colors, up to eight colors.

Valve bag load-bearing capacity: 0.5-25kg, up to 50kg;

Valve bags are mainly used to package powdered and granular products. They are widely used in food, chemicals, building materials, fertilizers, synthetic materials, grain, salt, seeds and other industries. They are especially suitable for export companies and can improve the packaging quality of products.