How to identify the laminated sacks and coated bags?

MAHBAGKING

News Center

How to distinguish between laminated sacks and coated bags?

In the current domestic cement production enterprises used in the cement packaging bags, there are mainly two categories of laminating plastic woven bags and coated plastic woven bags. Laminated sacks are made of polypropylene, polyethylene resin as the main raw material, pulled into a woven wire woven into plastic woven cloth, and then by calendaring method of composite made of plastic woven bags. While the production of coated plastic woven bags is also the main raw material woven into polypropylene and polyethylene resin filaments plastic woven cloth, but is the use of traditional casting technology composite production.

Both production equipment, process differences lead to a world of difference in product quality. Laminated bags with anti-aging, anti-ultraviolet, no cracking, no ash leakage, high peel strength; high temperature resistance, no deformation, good moisture resistance, low breakage rate and other significant advantages, therefore, many large cement factories in the choice of cement bags, non-laminated bags do not use. However, due to the large number of cement manufacturers in China, the huge demand for cement bags, small cement bag manufacturers around the world out of their own talent, technology, capital, equipment limitations, the inability to produce laminating bags, in order to their own interests, they will be in the traditional coated bags pretending to be laminating bags to capture the market at a low price, coupled with the part of the cement production enterprises and even some parts of the regional technical supervision departments of the laminating bags and coated bags can not be identified, laminating bags on the market. Not clear, the market of laminating bags and coated bags are therefore mixed up, mixed together.

So, how can we accurately identify the laminated bags and coated bags?

First of all, you can judge from the appearance:

1, the surface of the laminating bag is clear and glossy, while the coated bag is slightly dark, bag surface luster;

2, the surface of the laminating bag film seamless edge, while the coated bag or have a seam or edge, there must be one of them;

3, softness is different. Compound film bags soft texture, good folding resistance, while the coated bags are brittle and hard, after the crease that there are obvious creases;

4, the two use of plastic weaving cloth warp and weft filaments between the tightness of the different.

Compound film bags between the warp and weft structure is tight, small gaps, while the coated bags between the warp and weft structure is loose, large gaps. In the physical indicators and performance, compound film bags and coated bags, compared with a number of significant advantages, compound film bags are currently the best bags for cement production, and therefore favoured by a large number of cement production enterprises. I hope that the cement production enterprises in the choice of bag manufacturers to be careful, do not be a few unscrupulous traders or manufacturers deceived, and do not let your corporate image and product quality because of the use of unqualified bags and be adversely affected.