Aluminum foil bag manufacturers introduce composite packaging materials, cover film inner layer materials and coextrusion film materials
Inner layer material: jelly, juice, yogurt, fruit milk, soup and other liquid packaging cup. Bottle, its main material is HDPE. PP, PS, etc. The cover film of this package should not only consider the shelf life, but also the heat sealing strength between the cover film and the cup, as well as the convenience for consumers - easy tearing. To achieve this particularity, the inner layer material can only form the interface bonding strength with the cup, but can not completely penetrate and fuse together. Modified EVA resin is generally used. For example, DuPont appeel53007. TOPCO l-3388 of Toyo, lotryl 20mA 08 of France, Japan HIRO.DINE Wt231, etc. Its structure can be: PET / PE / hm, BOPA / PE / hm, PET / VMPET / PE / hm, PET / Al / PE / hm, paper / PE / Al / PE / HM. For the requirement that the cover film and the bottom cup are firmly covered without tearing, the material of the bottom cup is generally required to be the same as that of the inner layer of the cover film, so that the two materials can be completely fused during heat sealing. For example, HDPE cup is made of LDPE or EAA; PP cup is made of CPP film; for PET bottle, we have found a kind of PET film which has been coated and modified as heat sealing layer to seal pesticide PET bottle, and satisfactory results have been obtained.
Coextrusion film: the film produced by single layer LDPE or LDPE blended with other resins has single performance and can not meet the requirements of modern product development for packaging. Therefore, the comprehensive performance of coextrusion film produced by CO extrusion blowing film or co extrusion tape casting equipment is improved. For example, the mechanical strength, heat sealing performance, heat sealing temperature, barrier, opening, anti pollution and other comprehensive properties of the membrane are improved, and its processing cost is reduced, so it is widely used. For example, the hot melt adhesive film of H-layer co extrusion blowing film: PE / hm, cable film PE / EAA, mLLDPE low temperature heat sealing film, EVA cover film, antistatic film and smooth film. H-layer co extruded CPP, unmodified PP / heat sealing PP, etc. Three layer, five layer structure of nylon coextrusion film, five layer, seven layer EVOH, PVDC high resistance diaphragm are also developing and widely used.
Packaging industry knowledge: aluminum foil bag manufacturers introduce the development direction of packers and packaging printers
As a matter of fact, the packer and the packaging printing company and all the processors must keep up with the development of the times in terms of health, safety and environmental protection in the production and processing. This is the road that the packers and packaging printers should follow for a long time, and it is also an important direction for human food safety and health.
What should packers and packaging printers do? An effective source of information for packers and packaging printers is the printing / printing technology foundation (PIA / GATF), which can provide information and guidance on the increasing number of legislation and regulations that processors must follow. The printing / printing technology fund of the United States can answer relevant questions raised by federal, state and local government agencies, and can represent the printing industry when new legislation and regulations are considered in the Legislative Council. For flexible packaging printers, the flexible packaging Association can also provide effective help.
Due to the increasing industrial activities, the increasing expansion of high-speed transportation, and the growing public concern about health and environment, the relevant laws and regulations will become more and more complex.
As mentioned earlier, every printer should have a responsible and formal written safety certification formally signed by the manager. The certification must cover all production and operation activities in the enterprise. Currently, OSHA standards are in place for safety certification. Any printer who has not obtained safety certification should contact OSHA or the printing / printing technology foundation of the United States immediately. The main elements of safety certification include proper labeling and public warning of packaging cans, containers and equipment, safe use of materials and equipment and staff training.
Aluminum foil bag manufacturers introduced that safety certification should not become a financial burden of enterprises. In fact, strict safety certification can improve the production efficiency of enterprises by reducing the insurance cost and effective staff training (which can make the safety and productivity increase simultaneously).
Safety certification has also become a market selling point for processors. Competent suppliers have written safety certification and control dangerous goods certification. If the company lacks such certification, there will be sufficient reasons to remove the company from the supplier list. The concept of supplier approval is to audit various types of qualification, including safety, pollution control, instant production, etc., as well as IOS 9001 and IOS 14000.
There is no doubt that with the increasing number of global population and consumption of goods, environmental protection will attract more attention. All our packaging industry, to take the route is to do the worst, the safest packaging goods. http://www.dgbpk.com/
Dongguan Beite packaging materials Co., Ltd
Dongguan special bag, plastic bag, plastic bag, plastic bag