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Uncovering the Common Materials of Composite Films

Release time:

2019-10-16 13:50

Common materials for composite membranes:
 
1. Aluminum-plastic composite film
 
(1) Typical structure: PET/DL/AL/DL/PE or PET/AD/PE/AL/DL/PE (Note: DL is the compound abbreviation of Yu,
 
AD is a rubber drilling agent).
 
(2) Production process: dry composite method or first extrusion and then dry composite method.
 
(3) Product features: good printing adaptability, which is conducive to improving the grade of products; Good gas and moisture barrier.
 
2. Pharmaceutical strip easy-to-tear composite film
 
(1) Typical structure: PT/AD/PE/Al/AD/PE.
 
(2) Production process: extrusion compounding.
 
(3) Product features: it has good tearability, which is convenient for consumers to access the product; Good gas and moisture barrier, guaranteed.
 
long shelf life of the contents; Good degradability, which is conducive to environmental protection; It is suitable for effervescent agents, coatings, capsules and other pharmaceutical packaging.
 
3. Paper-aluminum-plastic composite film
 
(1) Typical structure: paper/PE/AL/AD/PE.
 
(2) Production process: extrusion compounding.
 
(3) Product features: good printability, which is conducive to improving the grade of the product; It has good stiffness to ensure that the product is good.
 
Good formability; It has good barrier to gas or moisture, which can ensure a long shelf life of the contents; Good degradability, which is conducive to environmental protection.
 
4. High temperature resistant retort film
 
(1) Typical structure: transparent structure BOPA/CPP or PET/CPP; Opaque structure PET/AL/CPP or PET/AL/
 
NEW/CPP。
 
(2) Production process: dry compounding.
 
(3) Product features: it can basically kill all bacteria in the package; It can be placed at room temperature without refrigeration; There is good moisture and gas.
 
Barrier, high temperature cooking resistance, high temperature cooking film can be printed, with good printing performance.
 
5. Multi-layer co-extrusion composite film
 
(1) Typical structure: outer layer/barrier layer/inner layer.
 
(2) Features: The outer layer is generally a material with good mechanical strength and printing performance, such as PET, PP, etc.; The barrier layer has a good .
 
The barrier properties of composite film to gas, water vapor, etc., such as EVOH, PA, PVDC, PET, etc., prevent the entry of water and gas through the barrier layer, and prevent the loss of active ingredients of drugs and the decomposition of drugs; The inner layer has the characteristics of good chemical resistance, high chemical resistance and good heat sealing performance, such as polyolefins. The multi-layer co-extrusion film has excellent barrier performance and good anti-counterfeiting performance, and at the same time, the structure is diverse, which is convenient for cost control.
 
 

Uncovering the Common Materials of Composite Films

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