PVDC Multilayer Coextrusion Film Manufacturer: Detailed Introduction to the Advantages and Application Scope of Coextrusion Films
Release Time:
2020-09-10
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Summary
In daily life, people often see various membrane raw materials, not only fresh-keeping bags but also food packaging, all of which are very effective. Such packaging is indispensable in daily life. PVDC multilayer co-extrusion film manufacturers produce a common type of plastic film in modern daily life. What effects does it have? The following is a detailed introduction about "The advantages and application scope of high barrier PVDC multilayer co-extrusion film."
PVDC multilayer co-extrusion film is blown directly by a blow molding machine using a double-layer co-extrusion process, while composite bags are made by laminating plastic films together using a laminating machine with strong adhesive!
Composite bags use microporous plate membranes or Dow reverse osmosis membranes as support layers, covered on the surface with a high-density homogeneous membrane with a thickness of 0.1 to 0.25μm as a barrier layer to form a separation membrane. This greatly enhances the permeability of chemical substances. PVDC multilayer co-extrusion film.
The raw materials of composite bags may include possible material combinations, such as ceramic membranes coated on hydroxides or aromatic acrylic resin plastic films coated on polysulfone microporous plate membranes. Their flat membranes or roll membranes can be reinforced with non-woven fabrics to support the compressive strength of the microporous plate membranes. The membranes themselves do not use co-extrusion lamination processes but are produced by several extruders extruding specified materials in a molten state to create a new type of multifunctional plastic film. PVDC multilayer co-extrusion film manufacturers.
Using a single processing procedure, double-layer intelligent composite plastic films can be made, avoiding multiple lamination processes, reducing costs, energy consumption, and raw material expenses, with less pollution during processing and minimal residual active solvent coatings in the finished product. Compared to other lamination processes, it can save about 30% of product costs. These plastic films can be configured with different dual components according to customer requirements to meet different specifications and costs.
With increasing demands for product packaging printing, packaging, sealing, protection, handling, and warehousing logistics, a single type of plastic can no longer meet these requirements. Therefore, double-layer materials can be used to combine the respective advantages. In plastic film processing, one material is extruded onto an already made plastic film or different types of plastic films are bonded together to form double-layer plastic films, which are called composite bags. High barrier PVDC multilayer co-extrusion film.
The raw materials of composite bags are mostly plastics, but paper, metal foil, or textiles can also be used. The basic requirement for composite bags is that there must be excellent adhesion between layers to ensure the overall physical performance of the packaging. PVDC multilayer co-extrusion film.
In addition, composite bags are mostly used for food packaging. During the production of composite bags, adhesives must be used, and the selection of organic solvents and lamination processes must meet corresponding quality standards. PVDC multilayer co-extrusion film manufacturers have most of the characteristics of composite bags, but one difference is that the multilayers of high barrier PVDC multilayer co-extrusion films are all extruded simultaneously, so there are no other non-plastic materials such as aluminum foil or paper.
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