Processing method for high-barrier online coated polyester film

A technology of polyester film and processing method, used in coatings, other household appliances, flat products, etc., can solve the problem that polyester film cannot meet high barrier properties, safety and functionality, affects the barrier properties of aluminum foil, and is easy to produce aluminum foil. Cracks and other problems, to achieve the effect of excellent rollability, enhanced adhesion, and reduced material costs

Pending Publication Date: 2021-08-17
佛山赛和薄膜科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Aluminum foil has a fatal flaw: after bending or folding, aluminum foil is prone to cracks, which affects the barrier properties of aluminum foil, and aluminum foil is more expensive
However, conventional corona-treated polyester films cannot meet the high barrier properties, safety and functionality required by the material.

Method used

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  • Processing method for high-barrier online coated polyester film
  • Processing method for high-barrier online coated polyester film
  • Processing method for high-barrier online coated polyester film

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Embodiment Construction

[0033] The present invention will be further described below.

[0034] In order to solve the application that needs to be aluminum-plated on the surface of the polyester film to block water and oxygen, by using the self-designed online surface treatment equipment, the online surface treatment is carried out on the surface of the film, while maintaining the excellent physical properties of the polyester film. , improve the barrier properties to oxygen, water vapor or carbon dioxide gas, the invention provides a processing method for high-barrier online coated polyester film, characterized in that: in the production process of conventional biaxially stretched polyester film to increase the online surface treatment , that is, after longitudinal stretching, the film is surface-treated by self-designed online coating equipment, and the mixed solvent used in the surface treatment layer is a water-based coating; the line surface treatment processing method includes the following steps...

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Abstract

The invention relates to the technical field of high-barrier online coated polyester films, in particular to a processing method for a high-barrier online coated polyester film. Online surface treatment is added in the production process of a conventional biaxially oriented polyester film, namely that the film is subjected to surface treatment through self-designed online coating equipment after longitudinal stretching, and a mixed solvent used for a surface treatment layer is a water-based coating; and the online surface treatment method comprises the following steps of raw material conveying, crystallization and drying, melt extrusion, sheet casting, longitudinal stretching, online surface coating, transverse stretching, traction winding, slitting and packaging. The invention provides the processing method for the high-barrier online coated polyester film, and the surface of the polyester film needs to be aluminized to achieve water blocking and oxygen resistance; and online surface treatment is performed on the surface of the film by using self-designed online surface treatment equipment, and the barrier properties to oxygen, vapor or carbon dioxide gas are improved while the excellent physical properties of the polyester film are kept.

Description

technical field [0001] The invention relates to the technical field of high-barrier on-line coating polyester film, in particular to a processing method for high-barrier on-line coating polyester film. Background technique [0002] At present, aluminum foil is mostly used for applications that require water and oxygen resistance. Aluminum foil has good light-shielding properties, gas barrier properties, and moisture barrier properties, as well as good thermal conductivity and electromagnetic shielding properties. Among them, the most prominent is the barrier property of aluminum foil. Therefore, aluminum foil is an indispensable material in flexible plastic packaging base film, and is widely used in pharmaceutical packaging and food packaging, especially those that require high-temperature cooking and relatively long storage time. In the flexible packaging of high-end products such as medicines and cosmetics. [0003] Aluminum foil has a fatal flaw: after bending or foldin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29D7/01C08J7/048C08L67/02C09D133/04C09D131/04
CPCB29D7/01C08J7/048C08J2367/02C08J2433/04C08J2431/04
Inventor 李绪猛刘晓军梁仙发
Owner 佛山赛和薄膜科技有限公司
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