The composite film structure design of large public

Built-in objects, requirements for the performance of the composite film is also different. Some of the product requirements of composite film has strong cut off performance, some products of non-toxic, tasteless, etc, the demand is higher. How to address these requirements to choose the appropriate base material and the structure of the design of composite film, is especially need to pay attention to. Current, small make up for each reader has brought the composite roll of membrane structure design, for your reference. In the composite film structure design, first to meet the functional requirements for packaging products, and finished product, environmental factors such as comprehensive consideration, as far as possible with economical and easy to recycle materials. Due to the functional sex of the composite film dominated in the structure design, in this, the author only to discuss from the Angle of the functional composite roll of membrane structure design. Could satisfy the requirement of cooking cooking class of composite film composite membrane can resistance to high temperature sterilization, basic with shading performance of aluminum foil as the middle tier, with good printing eligibility PA, PET for outer layer, in order to have good heat sealing performance of PE, PP for lining. At present, some with high barrier property of the aluminized materials have been widely used. Common of multilayer composite film structure with PET / / CPP, PET/Al/CPP, PA / / Al/CPP, CPP, PET/VMPET / / PA / / CPP, etc. High barrier property of composite film with high barrier property of composite film has moisture-proof, choke, shading, incense, such as performance, often used in cookies, chips, puffed food, such as packaging, as well as the metric snacks, Fried food, tea, soup powder and other food packaging moistureproof protect ointment. This kind of goods generally stored at room temperature, so the flexible packaging to high barrier property, at the same time be oil resistant performance. Commonly used multilayer composite structure have BOPP / / VMCPP, BOPP/PET/CPP, BOPP/VMPET/CPP, BOPP / / Al/PE, BOPP/VMPET/PE, BOPP / / / VMCPP, PA / / VMPET/PE, paper/paper/Al/PE, PET / / / / PE, PET/EVOH / / CPP, etc. Type of composite film heat resistance type of heat-resistant composite film with high and low temperature resistance, can meet the requirements of high temperature cooking, and low temperature preservation items, often used in frozen foods, carbonated drinks and some of the low temperature storage ( Such as chocolate) The packaging. Multilayer composite structures have BOPP/PE, BOPP / /, PA/PE/Al / / PET/PE, BOPP / / EVA, etc. Chemical resistance of composite film composite film of chemical resistance can mainly refers to the resistance to acid and alkali, particularly with inner lining materials in contact with content of acid, alkali, organic solvents, such as tolerance can be even more demanding. This kind of composite flexible packaging is mainly used in daily necessities, food, condiment packaging. Multilayer composite structures have PET/Al / / PA / / CPP, PET/Al/PET / / CPP, PET/CPP, etc. High mechanical strength of composite film within some require their packaging material has certain mechanical properties, such as candy, adornment elements are kink to packaging, because this often use PVC, PT and other materials to produce. For some of the heavier products, must use the material with better durability, impact resistance, such as the packing of the goods such as meat, rice, flexible packaging structure can be PA/PE, etc. Aseptic composite film aseptic composite membrane can be under the condition of no added preservatives, normal temperature, can minimize bacteria breeding, remain within the original ingredients and flavor, convenience store. Aseptic composite flexible packaging should have excellent blocking performance, especially for O2, CO2, N2 gas barrier property, and the blocking performance will not significantly decreased by the change of external temperature and humidity. Multi-layer composite structure with PA / / EVA, PA/PE, PA/EVOH / / PE, PET/EVOH / / CPP, PA/Al/CPP, PA / / Al / / CPP, etc. Beautiful, decoration, the antistatic composite film gifts, decorations for cosmetic requirements higher commodity packaging can use some of the treated substrate, such as VMBOPP, its surface transparent, aluminum plating after shading effect is good, appearance is beautiful; There are all kinds of film, the surface of the pearl luster has better visual effect. And PVA better environmental performance, with high anti-static performance, can be used as a T-shirt, sweaters and other fabric composite film material. This article from: WeChat ID: yinshuajishu1957
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