How to distinguish the true and false of non-woven fabrics

1. Look at the Turner of non-woven bags

It should be clear that stitching is very important in the process of non-woven bags. Cheap non-woven bags usually only take single thread in order to save the cost of locomotive routing. Employing inexperienced workers makes the product stitches not straight or even run.

2. Look at the number of non-woven Books

The gram number here refers to the weight of non-woven fabric in 1 square metre. The heavier the weight of non-woven fabric, the thicker and stronger it will naturally be. In order to save cost, most non-woven bags used for propaganda by ordinary enterprises are suitable for 80 grams of non-woven fabric. 80 grams of non-woven fabric can be reused about 10 times. The handle is thinner, 70 grams can bear 4-5 kg weight, and 80 grams can bear 5-6 kg weight. Quantity, and so on.

3. Look at the process of non-woven fabrics

A good quality non-woven bag is not only strong and durable, but also good-looking, holding in hand is very high-grade, most of the non-woven bags on the market are screen printing, silk screen printing of non-woven bags cheap, clear lines, in addition to human factors, there is also an important indicator that pigments, some poor manufacturers choose poor dyes lead to non-woven bags not only environmentally friendly, but also pungent. Smell.

Here's how to detect the true and false of non-woven bags.

Method 1: Water detection method

Put the non-environmental bag in water and press it into the bottom. The non-toxic non-environmental bag has a small proportion and can float out of the water. The toxic non-environmental bag has a large proportion and sinks.

Method 2: Fire detection

Non-toxic polyethylene non-environmental bag is flammable, the flame is blue, the upper end is yellow, it drips like candle tears when burning, has paraffin smell and less smoke; toxic polyvinyl chloride non-environmental bag is non-flammable, extinguishes immediately after fire, the flame is yellow, the bottom is green, softening can draw wire, and has the irritating smell of hydrochloric acid.

Method 3: Jitter detection

Hold one end of the non-environmental protection bag with your hand and shake it vigorously. Those who make a clear and crisp sound are non-toxic; those whose voice is dull are poisonous.