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Learn More About Its Production Process

Custom China Plastic Packaging Bag factor

 In today's fast-paced life, plastic bags have become an indispensable part of our daily lives. As a professional plastic bag manufacturer, we understand that our products need to strike a balance between convenience, cost-effectiveness and environmental responsibility. Today, we will take you into the production process of plastic bags and learn how it is transformed from raw materials into convenient packaging in your hands.

The production of plastic bags begins with the selection of raw materials. We usually use plastic particles such as polyethylene (PE), polypropylene (PP) or polyvinyl chloride (PVC) as raw materials. These plastic particles have good fluidity at high temperatures and can be processed into films. Our raw materials are strictly screened to ensure their quality and safety meet international standards.

Next, these plastic pellets are fed into a film blowing machine for heating and melting. Under high temperatures, plastic particles gradually melt into a viscous liquid. Subsequently, the molten plastic is blown into a film through the mold of the film blowing machine. In this process, we can control the thickness and size of the film by adjusting the machine parameters to meet the needs of different customers.

After the film is formed, the next step is the printing process. According to customer's requirements, we will print various patterns, text or trademarks on the film. This step requires precise registration and high-quality inks to ensure clear and long-lasting printing results. Our printing process uses advanced screen printing or flexographic printing technology to ensure that the plastic bags look attractive to customers.

After printing is completed, the film is cooled and rolled up, ready for the next step of the bag making process. Here, the film is cut into sheets of a certain size, and then the edges of the sheets are sealed by heat or cold sealing to form the basic shape of the bag. Heat sealing is a commonly used sealing technology that uses heat to melt and bond the contact surfaces of plastic films together. Cold sealing uses a special cold sealing adhesive that can be sealed without the need for heating.

During the sealing process, we will also add accessories such as handles, zippers, and automatic sealing as needed to improve the practicality and convenience of plastic bags. The addition of these accessories is completed under precise mechanical operations, ensuring the quality and functionality of the plastic bags.

Finally, the completed plastic bags will undergo strict quality inspection, including inspection of size, thickness, sealing strength, printing quality, etc. Only plastic bags that pass all inspections will be packed and ready to be shipped to customers or markets.

Throughout the entire production process, we always integrate the concept of environmental protection into every aspect. We strive to reduce energy consumption, use recyclable raw materials, and continuously develop more environmentally friendly plastic bag solutions. We believe that through continuous technological innovation and improvement, plastic bags can be more environmentally friendly while maintaining their important position in modern society.

The production process of plastic bags is a complex and delicate process, which involves multiple steps and precise mechanical operations. As a manufacturer, we have devoted great attention and efforts to every link to ensure that our plastic bags not only meet customer needs, but also meet environmental protection and sustainable development standards. We are proud to provide high quality plastic bags and will continue to work on improving our products and services.