What are the types of composite printing packaging films?
1. There are three materials: aluminum foil, aluminized and transpare
2. According to the type of material composite, there are two-layer film, three-layer film, five-layer , seven-layer , 9-layer , and 11-layer film.
3. According to the purpose: there are liquid, granule, powder film。
How to choose the material of packaging film
Like packaging bags, packaging film is divided into inner layer material and outer layer material.
1. The outer layer material usually chooses materials with good mechanical strength, heat resistance, good printing performance and good optical performance. Commonly used are polyester (PET), nylon (NY), stretched polypropylene (BOPP), paper, etc.
2. The most critical function of the inner layer material is the sealability, and the inner layer material is the material that directly contacts the food. It must be non-toxic, odorless, water-resistant, and oil-resistant. The commonly used materials are polyethylene (PE) and cast polypropylene ( CPP), ethylene-vinyl acetate copolymer (EVA).
3，Requirements and functions of intermediate layer materials:
Only three-layer and more than three-layer packaging film will use the intermediate layer material. Its function is to strengthen a certain characteristic of the composite packaging film, such as barrier properties, shading properties, fragrance retention, strength and other properties. The most used materials are aluminum foil (AL), aluminized (VMPET, VMCPP), polyester (PET), nylon (NY) and EVOH, etc....
4，The packaging film can be strong without the adhesive layer：
The function of the adhesive layer is to bond the packaging materials together without allowing them to separate, which is what we call the composite process. The firmness of the composite is an important indicator for evaluating whether the packaging material is strong.
If you are confused and do not know what material you choose to change, please tell us directly the product you want to pack and the model of your automatic packaging machine. We will recommend suitable materials and thicknesses for you.
How to use packaging film？
Packaging film can only be packaged using automatic packaging machines, and different packaging machines have different requirements for packaging materials, including thickness and width.
By the way, we not only produce packaging films, but also various packaging bags, and we have very good quality and strict quality control. We have professional quality inspectors to conduct inspections in every production link to ensure that the product quality is intact.
Baolai has a 100,000-class dust-free purification production workshop, covering an area of 100,000 square meters, two high-color printing production lines for ten colors, three high-speed printing production lines for nine colors, more than 500,000 bags for daily production, and more than 20 tons of various rolled film products for Nissan. The printing width is up to 1.8 meters, and the strong production capacity is a strong guarantee for timely delivery. On May 30, 2005, the company took the lead in passing China's food packaging QS certification (now changed to SC certification), ISO9001 international quality system certification, FDA food packaging certification, BRC food safety certification, FSSC22000 food safety system certification, ISO14001 environmental management system. Certification and OHSAS18001 Occupational Health and Safety Management System Certification.
Baolai Packaging is a flexible packaging manufacturer that provides design, plate making, printing, production and processing to provide customers with all-round service and safety. We have 14 years of production experience and high quality in the company's development process. Products, preferential prices, serious and responsible attitude, and long-term stable cooperation with many global companies, the products are exported to Europe, America, Southeast Asia and other countries, showing the "Bao Lai" excellent quality.
Choose us to make your packaging bags and flexible packaging rolls from beautiful to perfect.
Contact us now,you will get a quick reply and factory price.