The difference between PE flat pocket and PE self-adhesive bag

PE flat pocket and PE self-adhesive bag are two common plastic bags, they have obvious differences in material, structure, use and so on. The following details the characteristics and differences of these two types of bags.

1. Material and structure

PE flat pocket, as the name suggests, is a flat pocket made of polyethylene (PE) material. It is characterized by a relatively thin material, high flatness and non-viscous treatment. Its main component is two or more layers of polyethylene plastic film, which is sealed by heat sealing or other means.

PE self-adhesive bag is on the basis of PE flat pocket, after a special surface treatment, so that it has self-adhesive. This self-adhesion is achieved by coating the surface of the plastic film with a special viscous substance. This viscous substance enables the two self-adhesive bag mouths to bond to each other when in contact, forming a tight enclosed environment.

2, the way of use

In the specific way of use, PE flat pockets usually need to be sealed with other tools (such as tape), and its operation is relatively simple and quick. Due to the lightweight material, it is suitable for temporary storage and transportation in a variety of scenarios. However, it should be noted that the tightness of the seal may be relatively low.

PE self-adhesive bags are easier to use because of their self-adhesive properties. Simply align the mouth of the bag and gently press it to seal without any other tools. Its tight sealing properties allow the self-adhesive bag to better protect the contents during storage and transportation.

3. Application scenarios

In the application scenario, PE flat pocket because of its low price, lightweight and durable advantages, is widely used in food packaging, industrial packaging, daily necessities packaging and other fields. PE self-adhesive bag has been widely used in medical, biological sample preservation, chemical industry and other fields because of its excellent sealing performance and self-adhesive characteristics.

4. Compare advantages and disadvantages

The advantages of PE flat pocket are low price, easy to use, light weight, etc. The disadvantage is that the seal may not be tight enough and is susceptible to moisture or contamination. The advantage of PE self-adhesive bag is that the self-adhesive makes the sealing more tight and the protection performance is stronger; The disadvantage is that the price is relatively high. In practical applications, the appropriate packaging bag type should be selected according to the specific requirements and scenarios.

There are obvious differences between PE flat pocket and PE self-adhesive bag in materials, structures, modes of use and application scenarios. Which bag to choose depends on the specific application needs and scenarios. When purchasing and using, its characteristics and performance should be fully understood in order to better meet the actual needs.