Ziplock Plastic Bags as a packaging tool in life but has a huge role, with the increasingly strict requirements for food quality and hygiene, as a closed packaging and storage tools, self-sealing bags are soon to be loved by people.
Ziplock Plastic Bags are widely used in the consumer community because of their incomparable strengths of other packaging bags. Sugar in the food industry, medical devices and drugs in the pharmaceutical industry, textiles in the light textile industry, small mechanical parts in the machinery industry and packaging of electrical components in the electronics industry, etc..
Ziplock Plastic Bag is a kind of polyethylene (LDPE) and high-pressure linear polyethylene (LLDPE) and other materials through the blow molding, heat cutting machine bags, made of a plastic bag can be repeatedly sealed. This kind of plastic bag after the filling of the contents or removed, through the opening of the convex ribs and grooves, can be repeatedly sealed and pulled open. Commonly available dense bags, keel bags, zipper bags (or called chain self-sealing bags) and so on.
Ziplock Plastic Bag, although more types of specifications, for the Ziplock Plastic Bags on the market, there is no indication on the packaging of the product whether such products are food-grade or non-food-grade products. However, only the higher transparency or only a small number of printed self-sealing bags can be used for food packaging, and not suitable for packaging cooked food.
How to determine whether the Ziplock Plastic Bag qualified
1. Appearance inspection
First of all, there can be no bubbles, perforations, ruptures; secondly, if there are printed graphics, should be visually inspected for clarity of the printed graphics, if the pattern is not clear, the overprint error is too large, also means that there is a certain safety risk of product quality.
2. printing graphics adhesion fastness inspection
For the outer surface of the self-sealing bags with printed graphics, consumers can use their hands to rub the outer bag back and forth a few times to see whether the printed pattern off color, a good Ziplock Plastic Bag should be firmly attached to the printed pattern, will not easily lose color or deinking phenomenon.
3. Clamp chain convex prism groove clutch tightness of the appropriate check
At present, China has no national standards or industry standards for ordinary Ziplock Plastic Bag or dense bags without a chain, only for the chain self-sealing bags have industry standards (BB/T0014-2011), the standard requires that its repeated service life of not less than 10 times, that is, repeated use of opening and closing should be not less than 10 times, and the chain with, open tension are specified. Consumers can manually through the opening of the convex flute and groove, repeatedly seal, pull open, check whether the clamp chain is suitable for tightening and repeated use, too loose or too tight will affect the use.
4. Odor check
As many consumers will be used to seal the self-sealing bags for food, so consumers in the purchase of Ziplock Plastic Bag must carefully smell the bag whether there is a pungent organic solvent taste, the smell may come from poor quality ink printing or plastic bags itself caused by material additives, and good quality self-sealing bags should be free of any odor, it is recommended that consumers in the purchase of Ziplock Plastic Bag packaging food as far as possible to choose no printing or a small amount of printing The product.
Post time: Oct-27-2022