Nowadays, with the improvement of economic level, our concept of environmental protection has been increasingly strengthened. Many manufacturers have also been optimistic about the development prospects of non-woven bags, and they are gradually investing in this industry, but face so many non-woven fabrics on the market. Bag, how can we tell whether it is good or bad? Now we have summarized some methods for your reference.

To distinguish the quality of non woven bags, we first need to understand several parameters that determine the quality of the product:

1. Look at the turner of the non woven bag

It should be clear that stitching in the non woven bags(China spun bonded non woven vendor) process is very important. In order to save costs, cheap non-woven bags usually only take a single line when the locomotives are running. Inexperienced workers make the product sutures not straight or even run.

2. Look at the number of non woven fabric

The grammage here refers to the weight of the non-woven fabric within 1 square meter. The heavier it is, the heavier the weight of the non-woven material used is, the thicker and more natural it will be. For non-woven bags used for publicity by general companies, most of them are cost-saving. 80g of non woven fabrics, 80g of non-woven fabrics can probably be repeated 10 times, feel relatively thin 70 grams can withstand 4-5 kg ​​weight, 80 grams can withstand 5-6 kg weight, and so on.

3. Look at the non woven process

A good quality non woven bag is not only strong and durable, but also very good looking, very high quality in the hands of the market, the majority of non-woven bags used in the market is screen printing, screen printing non-woven bags(China spun bonded non woven wholesale) cheap, lines Clear, in addition to human factors, there is an important indicator is that pigments, some unscrupulous manufacturers choose inferior dyes cause the non-woven bags are not environmentally friendly and even pungent smell.

Here's a concrete way to test the quality of non-woven bags

Method One: Water Testing

Put the non-environmental bag in the water and press it into the bottom of the water. The proportion of non-toxic non-environmental bags is small and can be surfaced. The poisonous and non-environmental bags are more important and sink.

Method two: fire detection method

The non-toxic polyethylene non-reusable bags are flammable. The flame is blue and the top is yellow. When burned, it drips like a candle with tears. It has a paraffin-like taste and less smoke. The poisonous PVC non-reusable bags are not flammable and leave the fire. , The flame is yellow, the bottom is green, softening can pull, there is a pungent odor of hydrochloric acid.

Method 3: Jitter Detection

Grab the end of the non-green bag with your hand and shake it. The person who makes the crisp sound is non-toxic; the person who smells melancholy is toxic.

Method 4: Sensory Test

The non-toxic, non-reusable bags are milky white, translucent, or colorless, transparent, flexible, feel lubricated, and waxy on the surface; toxic, non-reactive bags are cloudy or yellow in color and have a sticky feel.

After everyone read the method we introduced, there was a slight understanding of whether the non-woven bags were genuine or not. For more information about nonwovens(spun bonded non woven company), please follow us.