How to take the better airless tube

The following are common problems of composite flexible packaging materials. They are for your reference and reference only.

What are the composite substrates of composite flexible packaging materials?
The composite substrates used in composite flexible packaging materials include plastic films, aluminum foils to make aluminum cosmetic tube, paper and cellophane.

Second, what are the properties of composite flexible packaging materials?
The composite flexible packaging material has good comprehensive performance, high strength, high barrier property, high and low temperature resistance, good

packaging operation adaptability, hygienic safety, and can meet the full range of requirements for goods and materials.

What are the structural requirements for composite flexible packaging materials?
The composite material structure used for commodities requires the following points.
(1) The inner layer material requirements are non-toxic, odorless, oil-resistant, chemical-resistant, heat-sealable and adhesive. Commonly used are PE, CPP, EVA and

other thermoplastics.
(2) The outer layer material requires good optical properties and printability, and has high strength and rigidity. Commonly used outer materials are PET, PA, BOPP,

aluminum foil and paper and other materials.
(3) If the composite material is required to have high barrier properties, an intermediate layer may be provided. Commonly used intermediate layer materials are high

barrier aluminum foil and polyvinylidene chloride (PVDC).

IV. What is the representation of composite flexible packaging materials?
The composite material is represented as follows: from left to right, from the outer layer to the inner layer. For example: PET/PVDC/CPP, outer layer PET, middle

layer PVDC, inner layer CPP (unstretched polypropylene film)