PE Coated Paper

PE Coated Paper refers to a layer of polyethylene (PE) film coated on the surface of ordinary paper to enhance its waterproof, oil-proof, moisture-proof and durability. This material is widely used in food packaging, industrial packaging, medical supplies and consumer product packaging, and is one of the important materials in the modern packaging industry.

Features

(1) Waterproof, oil-proof and moisture-proof

The PE coating can form an effective barrier that enables the paper to resist liquid penetration, prevent moisture and grease from penetrating the paper, and maintain its original strength and shape. It is particularly suitable for food packaging, such as paper cups, paper bowls, fast food boxes, etc.

(2) Tear resistance and enhanced durability

Compared with ordinary paper, PE coated paper has higher mechanical strength and is not easily damaged by moisture or friction. It can maintain good stability during long-term storage and transportation.

(3) Good printing adaptability

The PE coating can give the paper a smoother surface, making it suitable for high-quality printing processes such as offset printing, gravure printing and flexographic printing, which can enhance the visual appeal and brand promotion effect of the packaging.

(4) Suitable for heat sealing process

Due to the thermoplasticity of PE coating, PE coated paper can be sealed by heating and is widely used in disposable tableware packaging, medical packaging, food bags, etc., without the need for additional glue or adhesive.

(5) Environmental and sustainable development trend

Although traditional PE coating is not biodegradable, in recent years, the industry has gradually developed towards degradable PE coating, bio-based coating or water-based coating to reduce plastic pollution, in line with the global environmental protection trend.

Function

(1) Protect the contents of the package

PE coated paper can prevent moisture, grease or other liquids from penetrating into the package, keeping food, industrial products or medical supplies dry and hygienic, and extending the shelf life of the product.

(2) Enhance the durability of the package

Ordinary paper is easily deformed by moisture, while PE coating can improve its moisture resistance, making it suitable for product packaging that requires long-term storage and transportation.

(3) Improve the aesthetics and brand image of the package

PE coated paper can be printed with high quality, making the package more exquisite and improving the brand promotion effect. It is particularly suitable for high-end food packaging and consumer product packaging.

(4) Achieving hygiene and safety requirements

In the food and medical fields, PE coating can effectively block pollutants, ensure the hygiene of packaging, and meet food safety and medical packaging standards.

Scope of use

(1) Food packaging

PE coated paper is most widely used in the food industry, mainly for:

Paper cups, paper bowls: such as coffee cups, milk tea cups, soup bowls, etc., to prevent beverage penetration.

Fast food boxes, take-out bags: used for hamburger boxes, French fry bags, pizza boxes, etc., to prevent oil and water.

Baking packaging: such as cake boxes, bread bags, kraft paper oil-proof paper, etc.

(2) Industrial packaging

PE coated paper is used for moisture-proof, dust-proof, and oil-proof industrial purposes, such as:

Building materials packaging: such as cement bags and gypsum board packaging to prevent moisture from affecting material quality.

Rust-proof packaging: used to package metal parts to prevent oxidation and rust.

(3) Medical and sanitary product packaging

Disposable medical packaging: such as surgical instrument packaging bags to ensure the sterility of medical supplies.

Wet wipes packaging: prevents the moisture in wet wipes from evaporating or leaking.

(4) Consumer product packaging

Paper towel packaging: prevents paper towels from getting damp and deteriorating.

Personal care product packaging: such as cosmetic packaging, disposable razor packaging, etc.

Advantages and challenges

(1) Advantages

Excellent waterproof and oil-proof properties, suitable for various food packaging and industrial uses.

Enhance paper durability and reduce damage caused by moisture or oil.

Good printing adaptability, improve packaging aesthetics and brand promotion effect.

Applicable to heat sealing process, can seal directly, and improve production efficiency.

(2) Challenges

Traditional PE is non-degradable and has a certain impact on the environment, and the material formula needs to be improved.

Recycling is difficult, due to the composite characteristics of PE and paper, it is difficult to recycle directly.

High production cost, high-quality PE coated paper is more expensive than ordinary paper, which affects market promotion.

Future development trend

With the strengthening of environmental protection regulations, the PE coated paper industry is moving towards environmentally friendly directions such as degradable PE coatings and bio-based coatings. For example:

PLA (polylactic acid) coating: can replace PE, is biodegradable, and is suitable for food packaging.

Water-based coating: no plastic components, biodegradable, and reduces environmental pollution.

Recyclable coating technology: improve PE coating to make it easier to peel and increase recycling rate.

PE coated paper is a high-functional packaging material that combines the advantages of paper and plastic coating. It is widely used in food, industry, medical and other fields. Although traditional PE coating faces environmental challenges, with the development of biodegradable materials and new coating technologies, PE coated paper is moving towards a more environmentally friendly and sustainable direction, and will play a greater role in the field of green packaging in the future.