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High-barrier material for red wine BIB packaging

A high barrier and red wine technology, applied in the field of liquid food packaging, can solve the problems of high cost of EVOH products and expensive investment, and achieve the effects of reducing the risk of bag breakage, ensuring safety, and increasing mechanical strength

Inactive Publication Date: 2015-06-24
NO 8511 RES INST OF CASIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The performance of EVOH in terms of folding resistance is much better. However, since the EVOH resins currently used in China are all dependent on imports, and the investment in co-extrusion equipment with five or more layers is relatively expensive, the cost of EVOH products has remained high for a long time.

Method used

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  • High-barrier material for red wine BIB packaging

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Effect test

Embodiment Construction

[0014] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0015] combine figure 1 , the barrier layer 2 is a modified polyvinyl alcohol (PVA) coating solution, and the modified PVA coating solution is coated on the surface of the co-extruded 5-filament polyethylene (PE) layer 3. After aging, the composite glue and the composite layer 1 Composite, then at 55 o C ripening for 48 h.

[0016] The composite layer 1 is a biaxially stretched BOPP film, and the polyethylene co-extruded layer 3 is a 5-filament polyethylene co-extruded film with heat-sealing properties.

[0017] The oxygen transmission rate test before and after kneading is carried out, and the data are as follows:

[0018] Before kneading: 0.33 mL / m 2 ·24h·0.1MPa; after kneading: 0.63 mL / m 2 ·24h·0.1MPa.

[0019] In terms of mechanical strength performance test, the data are as follows:

[0020] Tensile strength, longitudinal: 74.2 MPa; transverse: 77...

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Abstract

The invention discloses a high-barrier material for red wine BIB packaging. The high-barrier material is successively composed of a composite layer, a barrier layer and a polyethylene co-extrusion layer, wherein the polyethylene co-extrusion layer is coated with the barrier layer, and the composite layer and the barrier layer are glued together through compound rubber. The composite layer is a biaxially oriented nylon or biaxially oriented BOPP film. The barrier layer is a water resistant modified polyvinyl alcohol coating. The polyethylene co-extrusion layer is a five-filament polyethylene co-extrusion film. Through tests, the high-barrier film material has excellent barrier property and mechanical strength, is low-cost and can be widely used in packaging of liquid food.

Description

technical field [0001] The invention relates to the technical field of liquid food packaging, in particular to a high-barrier inner bag material used for red wine BIB packaging. Background technique [0002] After the traditional red wine package is opened, it is difficult to effectively preserve it, and it needs to be drunk in a short time, otherwise it will be oxidized and lose its original flavor. BIB (Bag in Box) packaging is a packaging method developed based on solving the problem of red wine preservation. [0003] BIB packaging consists of two parts, inside and outside. The outside is an ordinary corrugated or cardboard carton, and the inside is a transparent or opaque flexible packaging bag. The inner bag of BIB packaging is different from traditional flexible packaging materials. It is composed of two sealed bags. The outer bag is used as an oxygen barrier layer, and the usual structure is EVOH / PE, NY / EVOH / PE+PE, PE / MPE / PE+PE. The inner bag is generally PE or LLD...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B33/00B65D65/40B65D77/06B65D85/72
Inventor 方茹
Owner NO 8511 RES INST OF CASIC
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