Nano-composite film bag capable of realizing one-way venting and high obstruction

A nano-composite, one-way exhaust technology, applied in the field of packaging composite film bags, can solve the problems of difficult adoption by small and medium-sized enterprises, large equipment investment, and high equipment requirements, and achieve the effect of good barrier property, simplified process and smooth appearance.

Inactive Publication Date: 2016-08-17
GUIZHOU RUILONG GRP PLASTIC PACKAGING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The PVDC composite film mainly relies on foreign imports, and the processing is difficult and costly; the five-layer co-extruded EVOH composite film has high requirements for equipment and large investment in equipment, which is difficult for domestic small and medium-sized enterprises to adopt.

Method used

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  • Nano-composite film bag capable of realizing one-way venting and high obstruction
  • Nano-composite film bag capable of realizing one-way venting and high obstruction

Examples

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Embodiment Construction

[0013] The present invention will be further described below in conjunction with accompanying drawing and specific embodiment:

[0014] Such as Figure 1~2 As shown: the composite film bag of the present invention is composed of a bag body 1 and a non-woven fabric 2 lapped at the seam of the bag body, and a number of air-permeable micropores (not shown in the figure) are distributed on the non-woven fabric. The bag body 1 is made of a heat-sealing base film 4, the outer surface of which is coated with a nano-modified PVA slurry film layer 3; the heat-sealing base film 4 can be a PE film, It can also be CPP film.

[0015] In order to further improve the barrier performance of the packaging bag, a layer of printed base film 5 is compounded on the inner surface of the heat-sealing base film 4 . When the package is an item that does not need shading, the printed base film 5 can choose BOPP film or PET film; when the package is an item that needs shading treatment (such as tea, m...

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Abstract

The invention discloses a nano-composite film bag capable of realizing one-way venting and high obstruction, belongs to soft packing bags for food and medicines, and aims to provide a soft packing bag which is applied to the food and medicines, can vent gas inside the bag as well as prevent external gases such as oxygen, nitrogen, hydrogen, dioxides, water vapor and the like from entering the bag and is simple in production technology and low in cost. The nano-composite film bag comprises a bag body made of a heat-seal base material film and nonwoven fabric overlapped at a joint of the bag body, wherein the outer surface of the heat-seal base material film (4) is coated with a PVA film layer (3). The composite film bag is non-toxic and good in obstruction property, is an ideal environment-friendly packing material, and can replace existing high-obstruction packing materials for the food and medicines.

Description

technical field [0001] The invention relates to a flexible packaging bag for food and medicine, in particular to a packaging composite film bag capable of unidirectional exhaust and high barrier performance to gases such as oxygen, nitrogen, hydrogen, carbon dioxide and water vapor. Background technique [0002] At present, flexible packaging is mainly used for food and medicine; in order to prevent food or medicine from deteriorating and improve its safety, it is required that the packaging of such goods must have good gas barrier properties. At present, the high-barrier flexible packaging materials used abroad for food and medicine mainly include PVDC composite film and five-layer co-extruded EVOH composite film. The PVDC composite film mainly relies on foreign imports, and the processing is difficult and costly; the five-layer co-extrusion EVOH composite film has high requirements for equipment and large investment in equipment, which is difficult for domestic small and m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65D30/02
CPCB65D29/02
Inventor 陆之洲
Owner GUIZHOU RUILONG GRP PLASTIC PACKAGING CO LTD
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