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High-barrier composite packaging film

A technology of composite packaging film and packaging film, which is applied in the field of packaging materials, can solve the problems of internal substance pollution, invisible packaging film, poor thermal stability, etc., to improve acceptability, improve identification and operability, and improve shelf life. The effect of life and shelf life

Pending Publication Date: 2019-01-25
BEIJING HOUMINGDE NEW MATERIAL PACKAGING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] This application provides a high-barrier composite packaging film to solve the problems of existing packaging films that are invisible, have poor thermal stability, and are prone to reactions under high temperature conditions to cause internal material pollution

Method used

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Effect test

Embodiment 1

[0025] A polyester film (SiOx-PET 12 μm) coated with a silicon oxide nano-film with a thickness of 0.02 μm was used as a barrier layer, a 80 μm thick cast polypropylene (CPP 80 μm) was used as a composite film heat seal layer, and a 15 μm thick nylon film ( PA15μm) as a composite film mechanical reinforcement layer. The three layers were laminated together by a dry composite process, and placed in a constant temperature oven at 50°C for curing. After curing for 48 hours, a three-layer silicon oxide high barrier composite film of PA15μm / SiOx-PET12μm / CPP80μm was obtained. The weight ratio of glue for dry compounding is: (main agent: curing agent: ethyl acetate) ratio is 5:1:5.8. The amount of gluing is 3.5g / m2. Dry composite line speed is 100m / min.

Embodiment 2

[0027] The polyester film (SiOx-PET12μm) coated with silicon oxide nano-film with a thickness of 0.02μm is used as the barrier layer, and the cast polypropylene (CPP70μm) with a thickness of 70μm is used as the heat-sealing layer of the composite film. The two layers were laminated together by a dry composite process, and placed in a constant temperature oven at 50°C for curing. After curing for 48 hours, a SiOx-PET12μm / CPP70μm double-layer silicon oxide high barrier composite film was obtained. The weight ratio of glue for dry compounding is: (main agent: curing agent: ethyl acetate) ratio is 5:1:5.8. The amount of gluing is 3.5g / m2. Dry composite line speed is 100m / min.

Embodiment 3

[0029] The polyester film (SiOx-PET12 μm) coated with silicon oxide nano-film with a thickness of 0.02 μm is used as the barrier layer, and the heat-sealable polyethylene film (PE50 μm) with a thickness of 50 μm is used as the heat-seal layer of the composite film. The two layers were laminated together by a dry composite process, and placed in a constant temperature oven at 50°C for curing. After curing for 48 hours, a SiOx-PET12μm / PE50μm double-layer silicon oxide high-barrier composite film was obtained. The weight ratio of glue for dry compounding is: (main agent: curing agent: ethyl acetate) ratio is 5:1:5.8. The amount of gluing is 3.5g / m2. Dry composite line speed is 100m / min.

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Abstract

The invention relates to the technical field of packaging, in particular to a high-barrier composite packaging film. The packaging film uses a polyester film plated with transparent nano oxide as a barrier layer of the composite packaging film. By compounding the barrier layer and other functional layers in a dry-type composite way, moisture and oxygen in the outside environment can be effectivelyprevented from entering a packaging bag to react with contained articles, the shelf life and expiration date of the contained articles can be prolonged, and the barrier layer is a transparent layer.In addition, the transparent nano oxide high-barrier film has electromagnetic permeability and high-temperature stability, the flexibility of the nano film can retain the barrier performance under rubbing conditions, and the identifiability and operability of a producing and logistic technological process can also be improved through a radio frequency identification technology. The problem can besolved that existing packaging film is invisible and poor in heat stability and reaction possibly occurs under the high temperature condition to cause internal substance pollution.

Description

technical field [0001] The present application relates to the technical field of packaging materials, in particular to a high-barrier composite packaging film. Background technique [0002] Packaging film is widely used in the packaging of industry, food and special fields. However, different demand areas have different requirements for the physical properties of packaging films. The manufacture of food packaging materials has begun to step into the high-tech industry field that is concerned by the world. In my country, plastic flexible packaging materials for food and its manufacturing technology have also received considerable attention and development. [0003] Commonly used metal barrier films are mainly aluminum-plastic composite films, which mainly use coating technology. In order to obtain an ideal barrier effect, the metal aluminum layer needs a certain thickness, while organic barrier layers such as polyvinyl chloride barrier film, ethylene poly Vinyl alcohol bar...

Claims

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Application Information

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IPC IPC(8): B32B27/06B32B27/36B32B33/00
CPCB32B27/06B32B27/36B32B33/00B32B2439/70B32B2307/204B32B2307/412B32B2255/20B32B2255/10B32B2307/558B32B2307/7246
Inventor 邵煜博范家棋赵磊张玲玲
Owner BEIJING HOUMINGDE NEW MATERIAL PACKAGING
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