Composite membrane with high barrier property

A high-barrier, composite film technology, applied in household appliances, flexible coverings, packaging items, etc., can solve the problems of changing the properties of medicines and potential safety hazards, and achieve high use temperature, low cost, and thermal adhesion. Good results

Inactive Publication Date: 2015-04-15
谢超
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Alcohol-water-based polyurethane modified polyacrylate adhesives emit alcohol-water mixed gas when heated, and these gases have the potential to change the properties of the drug itself when in contact with drugs; toluene or ethyl acetate solvent-based polyurethane thermosetting adhesives emit toluene or ethyl acetate solvents when heated Gases, these gases have safety hazards to the environment and the nature of the drug itself

Method used

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  • Composite membrane with high barrier property

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Embodiment

[0016] As shown in Figure 1, the composite film with high barrier properties of the present invention includes an outer surface layer 1, an intermediate layer 3 and an inner layer 4. The outer surface layer 1 is paper, the intermediate layer 3 is aluminum foil, and the inner layer 4 is polyethylene. An adhesive layer 2 is provided between the outer surface layer 1 and the middle layer 3, and the middle layer 3 and the inner layer 4.

[0017] The outer surface layer 1 set as paper has good printing effect and low cost; the middle layer 3 set as aluminum foil has excellent high resistance to light, moisture, oxygen and other gases, and has a beautiful luster; the inner layer 4 is polyethylene, which It has stable chemical properties, good heat resistance and thermal adhesion, and is directly thermally bonded to the packaging substrate material. Compared with the existing viscose that meets the adhesiveness and retort resistance, the composite film of the present invention is heated ...

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Abstract

A disclosed composite membrane with high barrier property comprises an outer surface layer (1), a middle layer (3) and an inner layer (4); the outer surface layer (1) is paper, the middle layer (3) is aluminium foil, and the inner layer (4) is polyethylene; the paper outer surface layer (1) is a printing layer, the aluminium-foil middle layer (3) is nontoxic and odorless and is of a highly-compact metal crystal structure and has good moisture resistance, gas barrier property and shading property; and adhesive layers are arranged between the outer surface layer (1) and the middle layer (3), and between the middle layer (3) and the inner layer (4), and the inner layer (4) polyethylene is thermally bonded with a substrate. The composite membrane has small environmental pollution and does not influence of properties of a medicine self.

Description

Technical field [0001] The invention relates to a composite film for medicine and food packaging, in particular to a composite film with high barrier properties. Background technique [0002] The hard plastic sheet materials commonly used in pharmaceutical blister packaging mainly include polyvinyl chloride, polyvinylidene chloride and some composite materials. The packaging of medicines that require barrier properties and light-shielding properties use plastic sheet and aluminum foil composite materials, such as PET-aluminum foil-PP, PET-aluminum foil-PE composite materials. The layers of these materials and the substrate materials need to be bonded with strong adhesion and high temperature resistance. At present, the adhesives that meet the requirements are: alcohol-waterborne polyurethane modified polyacrylate adhesive and toluene or acetic acid Ethyl solvent polyurethane thermosetting adhesive. Alcohol-water-based polyurethane modified polyacrylate adhesive emits alcohol-wa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B15/12B32B15/085B32B7/12B65D65/40
CPCB32B15/12B32B7/12B32B15/085B32B15/20B32B2307/306B32B2307/714B32B2439/80
Inventor 谢超
Owner 谢超
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