Analysis of the processability and versatility of PE coated paper

I. Processability of PE coated paper
1. Printability
The surface of PE coated paper is coated with a layer of polyethylene film, which makes it more adaptable during the printing process. Although the polyethylene coating is a plastic film, its surface can be treated (such as corona treatment) to enhance its affinity, so that it can withstand conventional printing processes, including offset printing, flexographic printing and screen printing. This makes PE coated paper one of the most popular materials in the packaging and printing industry, especially in the fields of food packaging, daily product packaging, advertising bags, etc.

When printing, PE coated paper can not only show high-quality printing effects, but also achieve bright colors and clear details due to its smooth surface. Whether it is text, pattern or trademark logo, PE coated paper can provide clear and vivid visual effects. This excellent printability makes PE coated paper widely popular in the market, especially today when the demand for brand packaging and personalized customization is growing.

2. Heat sealability and sealing properties
PE coated paper also has good heat sealability, which means that it can be heated to make its surface adhesive, so as to achieve the closure and sealing of paper. Heat sealability is an indispensable feature of PE coated paper in the packaging industry, especially in situations where the contents of the package need to be kept fresh, such as food packaging, pharmaceutical packaging, etc.

Heat sealability enables PE coated paper to be processed quickly and efficiently on the production line, providing high-quality sealing effects. Its coating softens during the heat sealing process and forms a strong bonding layer with other materials. PE coated paper is very suitable for automated production, greatly improving production efficiency. The heat sealability of PE coated paper also makes it highly adaptable when processing products such as plastic bags and paper cups, which can ensure that the sealing performance of the product meets strict requirements.

3. Cutting and mold processing
Another major processability feature of PE coated paper is its excellent cutability and mold processing. Compared with ordinary paper, the coating of PE coated paper increases its strength, making it smoother during cutting, punching and other processing. Whether using laser cutting, stamping dies, or traditional knife cutting, PE coated paper can ensure the accuracy and stability of processing.

This feature makes PE coated paper widely used in customized packaging, gift boxes, food packaging, household product packaging and other fields. Manufacturers can cut PE coated paper into different shapes and sizes according to different needs to meet various customized packaging needs.

4. Tensile strength and durability
Compared with ordinary paper, PE coated paper has higher tensile strength and durability. This enables it to withstand higher mechanical stress during packaging, especially in some packaging applications that require larger loads, such as logistics packaging, express bags, etc. PE coated paper can ensure that it will not be easily torn or damaged during transportation, thereby protecting the product from external damage.

In some applications, the durability of PE coated paper can be further improved, for example, by compounding with other materials (such as aluminum foil, plastic film) to increase its protective performance. This multi-layer structure design not only improves the strength of the packaging, but also enhances its moisture-proof, waterproof, and oil-proof functions.

2. Multifunctionality of PE Coated Paper
1. Waterproof and Oil-proof Function
The waterproof and oil-proof properties of PE coated paper are one of its most outstanding multifunctionalities. The polyethylene coating itself is waterproof, which enables PE coated paper to resist the invasion of external factors such as water, grease, and humidity. In food packaging, especially when dealing with oily foods or beverages, the oil-proof properties of PE coated paper are particularly important. It can effectively prevent oil from penetrating the outside of the package, keep the packaging appearance dry and neat, and ensure the freshness of the contents.

PE coated paper can also effectively block the influence of moisture and the external environment in applications such as express packaging and takeaway packaging, thereby ensuring the safety of the items in the package. Its moisture-proof function enables PE coated paper to still provide good protection in rainy, snowy weather or humid environments.

2. Food Contact Safety
PE coated paper is widely used in food packaging, especially in food outer packaging, catering takeaway, food trays and other occasions. This is because PE coating, as a food contact safe material, can ensure that there will be no harmful effects on food ingredients. Polyethylene materials usually meet food contact safety standards, which makes PE coated paper the preferred material for many food packaging.

Compared with some plastic coatings that may penetrate into food, PE coated paper is safer, and its degradable properties make it relatively friendly to the environment. PE coated paper not only meets the requirements of packaging performance, but also meets strict food safety standards.

3. Environmental protection and recyclability
Although PE coated paper itself is a composite of polyethylene and paper, its paper component makes it more recyclable than packaging materials with complete plastic coatings. With the advancement of recycling technology, PE coated paper can be effectively recycled and reduced its impact on the environment. Compared with traditional plastic packaging, PE coated paper can be more easily separated from paper recycling materials after disposal, reducing resource waste.

With the emphasis on environmental protection, many companies have begun to adopt more environmentally friendly PE coatings, such as bio-based PE coatings, which can reduce environmental pollution through biodegradation. This has further optimized PE coated paper in terms of environmental protection and is in line with the trend of sustainable development in the future.

4. Diversified market applications
Due to its unique protective properties and processing convenience, PE coated paper has been widely used in food packaging, pharmaceutical packaging, cosmetic packaging, electronic product packaging, logistics packaging, express bags and other fields. In these fields, PE coated paper not only meets the needs of protection, printing and processing, but can also be customized according to different application scenarios to exert its versatility. Its wide applicability makes PE coated paper occupy an important position in the modern packaging industry.