Poly Mailer Bag

Poly bags for mailing are a common type of plastic mailer bags. PE is a plastic material with many advantages, such as durability, waterproofing, lightweight, and high transparency. This type of plastic bag is widely used in the express logistics industry and can be used for shipping documents, documents, materials, and other items.

Poly bags for shipping are mainly made of polyethylene (PE) and are usually divided into two types: low-density polyethylene and high-density polyethylene. Low-density polyethylene has good transparency and softness, and the printing color is relatively bright; High-density polyethylene has good mechanical properties. Although polyethylene bags are convenient, they are not biodegradable. Improper handling can cause environmental pollution. Therefore, when using packaging poly bags, attention should be paid to environmental issues, the amount used should be minimized as much as possible, and they should also be properly disposed of after use.

The Feature of the Poly Bags for Mailing

Poly bags have good flexibility, high transparency, and strong tensile strength. Polyethylene bags have good low-temperature resistance, with a minimum operating temperature of -70~-100 ℃. It has good chemical stability, can withstand the erosion of most acids and bases (not oxidizing acids), is insoluble in general solvents at room temperature, has low water absorption, and has good electrical insulation performance. Polyethylene bags are widely used for packaging various items, such as food, cosmetics, stationery, toys, knitted fabrics and other light industrial products. They can also be used for packaging heavy industrial products such as furniture, appliances, and hardware products.

Compared to other packaging materials, the cost of the plastic mailing bags is lower, which helps to reduce the operating costs of express delivery companies. The weight of polyethylene express bags is relatively light, which can reduce the burden and cost during transportation. Polyethylene material has good waterproof performance, which can effectively protect packaging items from moisture and damage. This kind of plastic shipping bags is easy to open and close, making them convenient for users to use.

In addition, different types of large shipping bags also have some special properties, such as PP (polypropylene) plastic bags having good toughness, not easy to break, good tensile and wear resistance; PVC (polyvinyl chloride) plastic bags have high transparency, good flexibility, good weather resistance, and corrosion resistance. PVA (polyvinyl alcohol) plastic bags have high transparency and good flexibility, do not easily generate static electricity, and have good moisture-proof and fresh-keeping effects.

The Function of the Poly Bags for Mailing

Polyethylene shipping bags play a crucial role in the express delivery industry. Firstly, they provide good protection for the items. Due to the sturdy and waterproof properties of polyethylene bags, they can effectively prevent collisions or damage to internal items, ensuring that items remain intact during transportation. Secondly, shipping poly bags are lightweight and easy to handle, allowing couriers to easily carry large quantities of packages, improving their work efficiency. In addition, polyethylene bags have high transparency, allowing recipients to clearly see the contents of the package, which, to some extent, increases the transparency of the delivery and makes recipients more confident.