High-barrier transparent oxide composite film and preparation method thereof

A technology of high-barrier composite film and transparent oxide, which is applied in the direction of chemical instruments and methods, flexible coverings, and other household appliances. It can solve the problems of difficult production in factories, complex structural composition, and general barrier properties of products, and achieve good performance. Effects of gas and oil barrier properties, enhanced barrier properties, excellent water vapor and gas barrier properties

Inactive Publication Date: 2019-12-13
安徽屹珹新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the barrier properties of the product are generally
[0008] In addition, the Chinese patent with the publication number CN109572119A compounded oxygen-absorbing resin into a multilayer barrier film. The multilayer composite film produced in this way has both good barrier performance and excellent oxygen absorption performance, but the structure of the product is more complicated. , the factory production is more difficult

Method used

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  • High-barrier transparent oxide composite film and preparation method thereof
  • High-barrier transparent oxide composite film and preparation method thereof
  • High-barrier transparent oxide composite film and preparation method thereof

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preparation example Construction

[0040] The present invention also provides a method for preparing the transparent oxide high-barrier composite film, comprising: coating the first adhesive on one side of the polyamide film, and then compounding it with the transparent oxide-coated polyester film to obtain A polyamide film compounded with a polyester film coated with a transparent oxide; the first adhesive forms a first adhesive layer; the polyamide film compounded with a polyester film coated with a transparent oxide and a transparent oxide film The opposite side of the polyester film is coated with a second adhesive, and then compounded with the polypropylene film to obtain a transparent oxide high-barrier composite film; the second adhesive forms a second adhesive layer.

[0041] Wherein, the present invention has no special limitation on the sources of all raw materials, which can be commercially available; the polyamide film, the first adhesive layer, the transparent oxide coated polyester film, the second...

Embodiment 1

[0050] The Donghong (double-sided corona) BOPA film (20 μm) is placed in the position of the dry composite machine, and its surface is coated with a composite adhesive (the glue amount of the adhesive is 2.5g / m 2 ), dry at 45°C for 1 hour, and perform the first dry lamination with the Mitsubishi Chemical LX film (10 μm) placed in the second place of the dry lamination machine to form a lamination of BOPA film / oxide-coated PET brush film. film; then a composite film made of BOPA film / oxide-plated PET film is placed in the position of the dry compound machine, and its surface is coated with a composite adhesive (the glue amount of the adhesive is 2.5g / m 2 ), dry at 45°C for 1 hour, and dry-laminate with Meifeng 121°C cooking CPP film (80μm) placed in the second dry lamination machine to form oxide-coated PET film / BOPA film / RCPP Transparent oxide high barrier composite film. The adhesive used between the film layers is composite glue-polyurethane:curing agent-polyurethane:solven...

Embodiment 2

[0052] The Donghong (double-sided corona) BOPA film (10 μm) is placed in the position of the dry composite machine, and its surface is coated with a composite adhesive (the glue amount of the adhesive is 2.5g / m 2), dry at 35°C for 4 hours in the drying tunnel, and perform the first dry lamination with the Toppan GL film (50 μm) placed in the second place of the dry lamination machine to form a lamination film composed of BOPA film / oxide-coated PET brush film ; Then a composite film made of BOPA film / plated oxide PET film is placed in the position of the dry composite machine, and its surface is coated with a composite adhesive (the amount of glue applied to the adhesive is 2.5g / m 2 ), dried at 35°C for 4 hours in the drying tunnel, and then dry-laminated with Meifeng 121°C cooking CPP film (35μm) placed in the second dry lamination machine to form oxide-coated PET film / BOPA film / RCPP Transparent oxide high barrier composite film. . The adhesive used between the film layers i...

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Abstract

The invention provides a high-barrier transparent oxide composite film. The high-barrier transparent oxide composite film comprises a transparent oxide-coated polyester film, a first adhesive layer, apolyamide film, a second adhesive layer and a polypropylene film which are sequentially arranged. The transparent oxide-coated polyester film is used as the outermost layer, and the polyamide film isused as the middle layer, so the composite film has good gas and oil barrier properties, also has good mechanical properties and excellent thermal stability, and is beneficial to exerting the excellent puncture resistance of the polyamide film; the polypropylene film is used as the inner layer, so the composite film has an excellent heat-sealing strength; and the above three films cooperate witheach other, so the composite film has the advantages of high resistance to heat, puncture, pressure, medium and falling, standard-reaching microbial limit, good barrier to oxygen, moisture and carbondioxide, non-toxicity, and realization of heat sealing.

Description

technical field [0001] The invention belongs to the technical field of high barrier films, in particular to a transparent oxide high barrier composite film and a preparation method thereof. Background technique [0002] Barrier film refers to a polymer film that has a strong ability to prevent other substances from entering or penetrating, and is generally used to block oxygen, water vapor, carbon dioxide, odor and other small molecules. Packaging products made of barrier film can make food, medicine, chemicals, etc. more stable for a long time in the process of production, transportation and storage, so it has developed rapidly at home and abroad in recent years. [0003] Early barrier films were co-extruded or coated with transparent films such as ethylene-vinyl alcohol copolymer (EVOH), polyamide (PA), polyvinylidene chloride (PVDC) and polyvinyl alcohol (PVA), as well as metal aluminum foil and vacuum Opaque films such as aluminized films are representative. Driven by ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/36B32B27/08B32B27/34B32B27/32B32B7/12B32B7/08B32B33/00B32B37/12B32B37/10B32B38/16B65D65/40
CPCB32B7/08B32B7/12B32B27/08B32B27/32B32B27/34B32B27/36B32B33/00B32B37/10B32B37/1284B32B38/164B32B2037/1269B32B2307/31B32B2307/7242B32B2307/7244B32B2307/7265B32B2553/00B65D65/40
Inventor 滕超王国伟
Owner 安徽屹珹新材料科技有限公司
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