Criteria for choosing plastic packaging from the manufacturer's perspective

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1. What plastic material will be suitable for your packaging?

To determine the material, let's take a look at the characteristics of each of the major resins commonly used.

Polyethylene (PE) packaging is the most basic in terms of both production process and appearance. They are cheap and easy to manufacture, and therefore occupy a large market share, appearing in all supply chains to retail chains. PE plastic is divided into HDPE or LDPE (high density and low density). HDPE bags are hard and strong, have more opacity than LDPE. LDPE plastic bags are more resilient and can be stretched than HDPE.

Bags made of PP (Polypropylene) or OPP (Orient-Polypropylene) are much harder and transparent than PE, but they are also very easy to tear when there is a puncture or scratch.

In addition to the type of plastic, customers can also decide to use virgin plastic or recycled plastic, mixed with a certain ratio. Usually, to save costs for customers, manufacturers also often recommend that they order bags from recycled polyethylene. However, manufacturers still do not have a unified standard on the mixing ratio and a general assessment of the impact on the durability of recycled bags. Of course, their mechanical properties such as strength and toughness will decrease as the mixing ratio is increased.

In addition, they will not look as good as products made of virgin plastic. Even a non-professional can tell with the naked eye that he is holding a bag made of recycled plastic in his hand.

Not all manufacturers agree to use recycled plastic in their production processes, especially for food packaging items. This form of cost savings can only be realized when producing packaging for the secondary market. Products made from recycled plastic are often cloudy, gray or dirty beige. People often produce black plastic bags to cover these defects.

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