Skills for identifying the material of plastic packaging bags

With the acceleration of the pace of life, plastic packaging bags have become essential daily necessities. So, how much do you know about the materials of the plastic packaging bags you usually use, and how do you choose the plastic packaging bags that suit your needs? Next, let's learn about the techniques for identifying the material of plastic packaging bags.

1. Both high-pressure bags and low-pressure bags belong to PE materials, but they have different characteristics. The former feels relatively soft, has a glossy exterior, and is relatively sturdy (with toughness). Therefore, this material is often used for handbags and finished bags required for industrial packaging.

2. The application scope of low-pressure bags is mainly in shopping malls, supermarkets, food industries, etc., such as low-pressure bags used in restaurant kitchens and vest bags sold to consumers by supermarkets for a fee, all of which are made of this material. Its appearance feature is that it is resistant to stretching and not easily deformed when occasionally torn. It also has strong hardness and is not easily pierced by blunt objects.

3. How to distinguish between these two types of plastic bags? A simple method is to tear open the bag like tearing paper. If there are white marks on the torn area, it proves that it is a low-pressure bag. If there are no white marks, it is a high-pressure bag. If the merchant has both a low-pressure bag and a high-pressure bag in their hands, they will clearly feel that the high-pressure bag will have greater resistance when pulling during this experiment.

4. PP bags are relatively hard and have a smooth texture. Shaking them with your hand will make a loud noise. Generally, plastic bags do not leave folding marks, but PP material plastic bags will leave marks like paper folds when folded.

5. The transparency of OPP bags is also very high, but the difference is that OPP is more brittle. Due to its brittleness, it is more prone to damage, but this kind of damage is on the basis of already bursting. Customized plastic bags made of this material can easily tear open once a hole appears.

The above techniques for identifying the material of plastic packaging bags have been compiled by Jinde Packaging. Jinde Packaging has accumulated more than 10 years of industry experience in processing packaging bags. Jinde Packaging has a production purification workshop with 100000 level sterile and dust-free, constant temperature and humidity, providing one-stop services for vacuum packaging bag design, plate making, printing, composite, and bag making. It also operates wholesale and customization, with synchronous online and offline operations, wide coverage, convenient communication, and favorable prices. Since its establishment, Jinde Packaging has consistently ranked among the top sellers and is an ideal manufacturer for plastic packaging bag wholesale and customization. Hotline: 15902743510