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Composite structure high barrier molded resin sheet material, and processing method thereof

A resin molding and composite structure technology, applied in synthetic resin layered products, chemical instruments and methods, layered products, etc., can solve the problems of poor barrier properties, product packaging with difficult barrier requirements, and achieve cost optimization and environmental protection optimization. Effect

Inactive Publication Date: 2011-11-02
SUNRISE PACKAGING MATERIAL JIANGYIN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, polypropylene has poor barrier properties to oxygen and water vapor. Simply using polypropylene as the outer packaging of products is difficult to use in product packaging that requires barriers.

Method used

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  • Composite structure high barrier molded resin sheet material, and processing method thereof
  • Composite structure high barrier molded resin sheet material, and processing method thereof
  • Composite structure high barrier molded resin sheet material, and processing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] like Figure 2-4 As shown, the forming outer film layer 1 is a polyethylene terephthalate (PET) sheet of 300 μm, and the inner film layer 3 of 5 layers is a polyethylene layer 32 / adhesive layer 2 / polyethylene layer of 100 μm co-extruded film. Dichloroethylene layer 31 / adhesive layer 2 / polyethylene layer 32 structure, after the adhesive layer 2 is compounded with a retort-resistant two-component polyurethane adhesive, a co-extruded nylon film is used as a cover film. Uses: After molding, it is packaged and sterilized at 120 degrees Celsius, then stored at room temperature, and the shelf life can reach more than 60 days.

[0028] Since polyvinylidene chloride has excellent barrier properties, it is made into a composite sheet with polyethylene terephthalate through a dry composite process, which improves the barrier properties of the sheet. Under the same thickness, the flexibility of the sheet is improved, and multi-functionality, saving, environmental protection and co...

Embodiment 2

[0031] like Figure 2-5 As shown, the forming outer film layer 1 is a 400 μm polypropylene (PP) sheet, and the inner film layer 3 is a 9-layer co-extruded film and is a 150 μm polypropylene layer 34 / polypropylene layer 34 / polypropylene layer 34 / adhesive The structure of knot layer 2 / nylon layer 33 / adhesive layer 2 / polypropylene layer 34 / polypropylene layer 34 / polypropylene layer 34 is compounded by a two-component polyurethane adhesive that is resistant to cooking after the adhesive layer 2. The co-extrusion film of polyvinylidene chloride is used as the cover film. Uses: After molding, it is packaged and sterilized at 135 degrees Celsius and stored at room temperature. The shelf life can reach more than 90 days.

[0032] Because nylon has good barrier properties, it is made into a composite sheet with polyethylene terephthalate through a dry composite process, which improves the barrier properties of the sheet. Under the same thickness, the flexibility of the sheet is impro...

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Abstract

The invention discloses a composite structure high barrier resin molded sheet material, and a processing method thereof. The sheet material comprises an outer film layer, a binding layer and an inner film layer. The outer film layer and the inner film layer are bound by the binding layer. The outer film layer is a polyethylene terephthalate (PET) sheet or a polypropylene (PP) sheet, and the inner film is a multilayer co-extruded film containing a barrier material, wherein the barrier material is a polyamide barrier layer or a polyvinylidene chloride barrier layer. The multilayer co-extruded film is processed through a downdraft water-cooling film-blowing method, or a film-casting method. Because the co-extruded film with an excellent obstructing performance is composed with a blank plastic sheet material, good moldability of the plastic sheet and excellent obstructing performance of the co-extruded film are integrated. Compared with sheet materials with a same thickness, the composite sheet material is substantially advantaged in flexibility. Therefore, multi-functional qualities of the sheet material can be realized, consumptions can be reduced, environment can be protected, and cost can be optimized.

Description

technical field [0001] The invention relates to an all-plastic composite sheet, in particular to a high-barrier resin molding sheet with a composite structure, which can be used for stamping and molding for food packaging, and is also suitable for fields such as pharmaceutical packaging and cosmetic packaging. Background technique [0002] At present, the sheet materials used in stamping and forming packaging on the market are mainly pure polyvinyl chloride sheet (PVC), polystyrene (PS), high-density polyethylene (HDPE), polypropylene (PP), polyethylene These sheets occupy most of the stamped packaging market and most of the pharmaceutical blister packaging market. However, the sheets of these materials have a common deficiency in that the barrier property is not good, and the shelf life of the packaged products is relatively short. The most widely used barrier materials in the field of food and drug packaging are polyvinylidene chloride (PVDC), ethylene-vinyl alcohol copol...

Claims

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Application Information

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IPC IPC(8): B32B27/08B32B27/32B32B27/34B32B7/10
Inventor 杨伟何斌
Owner SUNRISE PACKAGING MATERIAL JIANGYIN CO LTD
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