Industry News

 

The selection of stretch film roll should be "one sniff, two look, three pull"

One sniff, that is, smell the product to see if there is any odor, and there is no odor if it is wrapped well.

 

Second look, first look at the price. It is necessary to know that the raw material of the stretch film, high-density polyethylene, exceeds 10,000 per ton. Secondly, look at the color and transparency, and the colorless transparency of a good winding is high.

 

Three pulls, first of all, you need to know what kind of stretch film you need. The tensile force of the stretch film is generally between 200% and 500%, and the standard selected according to different packaging items is also different. Family personal use is about 300%. That is, the horizontal stretch can reach three times the original length.

The second is to test the transverse tear strength, that is, the critical point of tearing in the width direction of the winding reaches 13 Newtons. A convenient way is to pass 40% of the transverse stretch width without breaking.

The third can be said to be "touching" in a strict sense, and the thickness of a good winding is uniform and soft to the touch. The toxic PVC stretch film feels rough and leathery.