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Method and material for moducing blocking type liquid food soft package material

A technology of liquid food and production method, which is applied in the direction of chemical instruments and methods, layered products, synthetic resin layered products, etc. It can solve the problems of complex and cumbersome processing procedures, poor heat sealing performance, low friction coefficient, etc., and achieve reduction Effects of manufacturing steps, low coefficient of friction, and excellent wear resistance

Active Publication Date: 2007-06-06
山东新巨丰科技包装股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still great defects in the production process. The processing steps are from the second layer to the third layer to the fourth layer and then to the fifth layer. Low resistance, poor heat sealing performance, low coefficient of friction and low static electricity

Method used

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  • Method and material for moducing blocking type liquid food soft package material
  • Method and material for moducing blocking type liquid food soft package material

Examples

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Embodiment Construction

[0019] As shown in Figures 1 and 2, a method for manufacturing a barrier liquid food flexible packaging material. The manufacturing steps are as follows: 1. The coated substrate (part of Figure 1) is initially unrolled, and the substrate layer 1 is polymerized. Ester film, polyethylene film or polypropylene film, and the coating layer 2 is made of polyvinylidene chloride or nylon resin. 2. Extrusion compounding: extruding and compounding the above-mentioned substrate, paper and polyethylene in a molten state into a compound of substrate layer 1, coating layer 2, paper layer 3 and polyethylene layer 4. Layer, the temperature during extrusion is 280°C-350°C, at which temperature the polyethylene is in a molten state; the polyethylene is low-density polyethylene, metallocene polyethylene or linear polyethylene. 3. The composite layer compounded in the second step is extruded and compounded with the polyethylene in the molten state through the No. 2 extruder 7, and then a layer of pol...

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PUM

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Abstract

The production process of liquid food blocking soft packing material includes the following steps: unwinding the painted base material, extruding to compound, and extruding molten polyethylene in the second extruder to compound one other polyethylene layer. The material thus produced includes base material layer, paper layer and two polyethylene layers. The production process of the present invention may produce multiple layer material in less production steps, low production cost and high production efficiency.

Description

Technical field [0001] The invention relates to a manufacturing method and material of a barrier liquid food flexible packaging material. Background technique [0002] It has long been known in the prior art to package and transport liquid foods in liquid-tight packaging containers made of laminated packaging materials. Such packaging laminates include multiple independent layers, which together give the finished packaging container With the mechanical properties and chemical resistance required for packaging products, the usual packaging laminates have a strong but foldable paper core layer or cardboard core layer. Both sides of the core layer are coated with a plastic, preferably polyethylene outer layer. This protects the moisture-sensitive core layer, while at the same time enabling the packaging layer to be heat-sealed. The above-mentioned packaging laminates with only paper or cardboard layers and plastic layers enable the production of shape-stable liquid-tight packaging c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C47/02B29C47/06B32B27/06B29K23/00
Inventor 隗功海刘洪赵铁毅张建平
Owner 山东新巨丰科技包装股份有限公司
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