Valve bag is a small bulk packaging container, convenient, neat, good sealing, is now one of the prevalent international packaging forms, is a new type of environmentally friendly packaging products, especially suitable for export packaging. It can be fed from the top or bottom of the valve opening and filled with special filling equipment.

Valve pockets have the characteristics of improved packaging efficiency, easy transportation, strong sturdiness and low breakage rate. Valve pockets can be divided into the following categories according to the different materials used.
1. Paper-plastic composite valve pockets are made of plastic woven bags (referred to as base cloth) as the base material, after flowing compound (cloth / film / paper composite for the three in one).
2. Kraft paper valve pocket is made of kraft paper, (kraft paper is divided into two kinds of imported kraft paper and domestic kraft paper) the number of layers of kraft paper according to the use of general ranging from one to six layers, the middle can be coated with film or add PE plastic film.
3. PE valve pockets: commonly known as heavy bag valve pockets, made of polyethylene film, the thickness of the film is generally between 8-20 silk.
4. Low melting point valve pockets: made of low melting point polyethylene film, the thickness of the film is generally between 8-20 silk, suitable for chemical enterprises in the assembly line mass production use, can reduce pollution, reduce the labour intensity of workers.
5. Composite material valve pockets: with the printability of paper and the moisture resistance and sturdiness of plastic.

Sichuan Shengritai Plastic Industry Co., Ltd. was established in September 2017, located in Longfeng Town, Jiangyou City, Sichuan Province, with a registered capital of 32 million yuan, business scope: plastic products, woven bags, paper-plastic packaging products, new materials production. Sales and recycling of renewable resources.
The company covers an area of 200 acres, with an investment of more than 500 million yuan, a new plant of 50,000 square meters, and has built 6 plastic product production lines and 5 heat-sealing valve plastic packaging bag production lines; The annual production capacity can reach 500 million square meters of laminated packaging bags and 200 million heat-sealing valve packaging bags. The company has always adhered to the quality management of "customer first, zero complaints" as the goal. The production process adopts the industry's more advanced energy-saving production technology, raw material processing to finished product one-stop service: from wire drawing→ wire collection→ circular weaving→ lamination→ printing (cutting→), sewing→ inspection→ packaging and warehousing" process, layer by layer check, in strict accordance with customer requirements, for enterprises tailor-made, excellent quality, reasonable price, high product reputation of high-quality cement packaging bags, in order to improve the reputation of the cement group companies will make unremitting efforts and pursuit.

Xinghong Gao

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