Isolation laminated packaging material

A packaging material and barrier technology, applied in the field of barrier laminated packaging materials, can solve the problems of aluminum foil environmental adverse effects, lack of stress crack resistance, lack of strength, etc., achieve excellent performance and price advantages, improve overall mechanical strength, improve barrier effect

Active Publication Date: 2010-11-03
厦门天策材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Aluminum foil also lacks the strength necessary for high-speed press processing, i.e., the stress-crack resistance required to form an integrated low-permeability structure during scribing, box forming, and box dispensing
In addition, the use of aluminum foil has adverse effects on the environment
The presence of aluminum foil in packaging materials also interferes with metal detection

Method used

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  • Isolation laminated packaging material
  • Isolation laminated packaging material
  • Isolation laminated packaging material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] In this embodiment, the overall structure of the packaging material is outer layer / substrate layer / barrier layer, wherein the outer layer component is low-density polyethylene (LDPE), the substrate layer component is cardboard, and the barrier layer component is composed of only two A layer-multiplied co-extruded composite layer consisting of two polymers and repeating units of only two layers. The barrier polymer composition in the barrier composite layer is commercial grade polyamide 6 containing 3wt% nano-montmorillonite, and the non-barrier polymer composition is 95wt% low density polyethylene and 5wt% maleic anhydride modified low density Polyethylene blends.

[0046] First, cast low-density polyethylene on a thick cardboard (paper weight is about 400g / m2) at about 325°C 2 ) with a printed layer on the outer surface, the coating thickness is about 20 microns.

[0047] A barrier composite layer coextruded by a layer doubling process was coextruded on the inner sur...

Embodiment 2

[0050] In this embodiment, the overall structure of the packaging material is outer layer / substrate layer / barrier layer, wherein the outer layer component is low-density polyethylene (LDPE), the substrate layer component is thin paper, and the barrier layer component is composed of only two A layer multiplication extruded composite layer consisting of three polymers and a repeating unit of three layers. The barrier polymer composition in the barrier composite layer is extrusion-grade ethylene-vinyl alcohol copolymer (EVOH), and the non-barrier polymer composition is ethylene acrylic acid copolymer (EAA).

[0051] First, at about 325°C, cast low-density polyethylene on a thick cardboard (paper weight is about 150g / m 2 ) with a printed layer on the outer surface, the coating thickness is about 20 microns.

[0052] A barrier composite layer extruded by a layer doubling process was coextruded on the inner surface of a coated tissue laminated with low density polyethylene. The tota...

Embodiment 3

[0055] In this example, the overall structure of the packaging material is outer layer / substrate layer / barrier layer / tie layer / inner layer, wherein the outer layer component is linear low density polyethylene (LLDPE) and the substrate layer component is cardboard , The barrier layer component is a multilayer extruded composite layer consisting of only two polymers and three repeating units, the adhesive layer is EVA, and the inner layer is LLDPE filled with nano-calcium carbonate. The polymer composition in the barrier composite layer is composed of two barrier polymers, extrusion grade ethylene-vinyl alcohol copolymer (EVOH) and MXD6 nylon.

[0056] Firstly, linear low density polyethylene is cast-coated on thick cardboard (paper weight is about 320g / m2) at about 350°C. 2 ) with a printed layer on the outer surface, the coating thickness is about 20 microns.

[0057] A barrier composite extruded by a layer doubling process was coextruded on the inner surface of a cardboard c...

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Abstract

The invention discloses an isolation laminated packaging material, which comprises a base material layer component, a compound isolation layer component, an outer layer component or an inner layer component or an middle layer component, and a bonding layer component, wherein the base material layer component conducts a supporting function and at least contains a paper or polymer base layer; the compound isolation layer component is laminated on the inner side of the base material layer component, the compound isolation layer component at least comprises a repetitive unit prepared by layer-redoubling and co-extrusion which are realized by repeated cutting, re-lamination and convergence and a compound isolation layer at least containing two individual layers, at least one of the compound layers only contains two polymer components, and at least one component contains at least one isolation polymer; and the bonding layer component is used for bonding the component layers and all layers in the components. In the invention, the structure, performance and price of the packaging material are selected and designed by the selection of the component and the selection and design of the structure of each component, particularly the layer-redoubled co-extruded compound layer component. Compared with other conventional aluminum foil-free laminated packaging material, the isolation laminated packaging material has obvious advantages.

Description

technical field [0001] The present invention relates to a barrier laminated packaging material, in particular to a metal foil-free laminated material for barrier packaging. Background technique [0002] With the development of society and the improvement of people's living standards, the classification of products is becoming more and more detailed. The packaging of products is not limited to visual effects, but to be functional and diverse according to the characteristics of products and market demand. In-depth development in the direction of chemicalization. Barrier packaging materials have been rapidly developed and widely used because they can preserve quality, freshness, flavor and extend shelf life. In modern society, people's pace of life continues to accelerate and living standards continue to improve. The demand for various convenience foods such as meat products, dairy products, and marinated products is increasing, and the quality requirements for pharmaceutical ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65D65/40B65D30/02B65D5/42B32B27/00B32B27/10B32B27/06B32B27/08B32B27/20B32B7/12
Inventor 翁文桂周纯
Owner 厦门天策材料科技有限公司
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