PE(Polyethylene) Packaging Film Roll Manufacturers

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Hangzhou Zhongcheng

Hangzhou Zhongcheng Material Technology Co., Ltd. is China PE Packaging Film Roll Manufacturers and Custom PE Packaging Film Roll Suppliers. We are an innovative enterprise specializing in the research, development, production, and sales of PE(Polyethylene) Packaging Film Rolls, disposable plastic, food-grade, medical, shrinkable, PE/CPP, and military anti-rust films. The company provides customers with high-performance film products with advanced technology and production equipment, complete product performance testing methods, a reliable quality assurance system, valuable pre-sales technical support, and thoughtful after-sales service.

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PE Film Industry knowledge

What are the main applications of PE packaging film rolls in the packaging industry? What are its unique advantages over other types of packaging films?

PE packaging film rolls are widely used in the packaging industry. Its main applications include but are not limited to the following aspects:
Food packaging: PE packaging film rolls are particularly prominent in the food industry because it is moisture-proof, dust-proof, and touch-proof, and can ensure the hygiene and safety of food during transportation and storage. At the same time, PE packaging film rolls also have good transparency, which can show the appearance of food and attract consumers' attention.
Pharmaceutical packaging: For pharmaceuticals that need to be strictly kept dry and clean, PE packaging film rolls are also an ideal choice. Its moisture-proof and dust-proof characteristics can ensure that drugs are not affected by the external environment during storage and transportation, thereby maintaining their quality and efficacy.
Chemical product packaging: Chemical products usually need to prevent leakage and chemical reactions. PE packaging film rolls are often used for the packaging of such products due to their good chemical stability and sealing properties.
Daily necessities packaging: In the field of daily necessities, PE packaging film rolls also play an important role, such as being used to package stationery, toys, cosmetics and other commodities, providing them with effective protection and beautiful display effects.
Compared with other types of packaging films, the unique advantages of PE packaging film rolls are mainly reflected in the following aspects:
Cost-effectiveness: The production cost of PE packaging film rolls is relatively low, and its excellent physical and chemical properties make it cost-effective in various packaging applications.
Environmental protection: PE packaging film rolls have good recyclability and degradability, and meet the environmental protection requirements of the modern packaging industry. At the same time, by improving the production process and material formula, its environmental performance can be further improved.
Wide applicability: PE packaging film rolls are suitable for a variety of packaging forms and needs, such as bags, rolls, boxes, etc., and can meet the personalized needs of different customers.

What are the key technical links and quality control points in the production process of PE packaging film rolls? How do these links ensure the high quality and stability of the product?

The production process of PE packaging film rolls involves many key technical links and quality control points, which together ensure the high quality and stability of the product. Here are some of the key links and quality control measures:
1. Key technical links
Raw material selection and pretreatment: Select high-quality polyethylene raw materials and conduct strict pretreatment, such as drying, screening, etc., to remove impurities and moisture and ensure the purity and stability of the raw materials.
Melt extrusion: The pretreated polyethylene raw material is heated to a molten state through a melt extruder and extruded into a film through a die. In this process, the control of temperature, pressure and extrusion speed is crucial, which directly affects the uniformity and thickness of the film.
Cooling and solidification: The extruded film is quickly cooled and solidified through a cooling device to fix its shape and properties. The control of cooling rate and temperature has an important impact on the crystallinity and physical properties of the film.
Stretching and orientation: The film is stretched longitudinally and transversely through a stretching device to orient the molecular chains and improve the strength and toughness of the film. Control of stretching ratio and stretching speed is key.
Surface treatment: corona treatment or coating on the surface of the film to enhance its printing performance and adhesion. The selection of treatment method and treatment intensity needs to be based on product requirements.
2. Quality control points
Raw material inspection: Strictly inspect the raw materials entering the factory to ensure that they meet quality standards. This includes testing the chemical composition, physical properties and hygiene indicators of raw materials.
Process parameter monitoring: During the production process, key process parameters such as melting temperature, extrusion speed, cooling speed, and stretch ratio are monitored and adjusted in real time to ensure that they fluctuate within the set range.
Film performance testing: The produced films are tested for tensile strength, elongation at break, thickness uniformity, transparency and other performance indicators to ensure that the products meet quality requirements.
Appearance quality inspection: Carefully inspect the appearance of the film to ensure that its surface is smooth, free of bubbles, scratches and other defects.
Batch management and traceability: Record and identify each batch of raw materials, semi-finished products and finished products to facilitate traceability and investigation when problems arise.