High-isolation full-degradable non-toxic spray aluminized nano-film and its use

A fully degradable, non-toxic technology, applied in layered products, chemical instruments and methods, metal layered products, etc., can solve the problems of shortened shelf life of food and drugs, incombustibility, food and drug pollution, etc., to ensure long-term preservation. No deterioration, high partition performance, and the effect of avoiding hazards

Inactive Publication Date: 2002-12-25
烟台光大科技产业发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, flexible packaging materials for food and medicine are mainly plastic products and a small amount of composites of plastic film and aluminum foil. These films are non-degradable, difficult to recycle, and difficult to burn. The serious pollution of these materials to the environment has been recognized by the world; The shortened shelf life of food and medicine caused by packaging materials has brought serious losses to manufacturers; the medical community has found that plastic itself emits harmful gases, and due to long-term accumulation in airtight packaging bags, the concentration also increases with the extension of sealing time , causing food and medicines to be polluted to varying degrees, which has a great impact on the health and development of human beings, especially children; direct and long-term contact of plastics with food and medicines will also produce harmful effects on itself and its auxiliary materials and auxiliaries. substances, contaminate food and medicine; the research and application of a high-barrier, fully degradable and non-toxic nano-sprayed aluminum film is imperative

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0018] Example 1, weigh 30kg of plastic starch, 68kg of degradable polycaprolactone, 1kg of low-molecular-weight polyhexene wax, and 1kg of degradable masterbatch, and blend the above materials using a strong-feeding twin-screw extruder, Extrude and manufacture masterbatch; then process the masterbatch into a 15μm film using extrusion-biaxially stretched film manufacturing equipment; use a wax coater to evenly coat the film with a layer of special ultra-fine silicone oil of 5μm; through After drying, one side of the film coated with ultrafine silicone oil is sprayed with a 20 nanometer (nm) aluminum layer by vacuum evaporation vapor deposition (PVD) to obtain the finished product.

example 2

[0019] Example 2, weigh 35kg of plastic starch, 63kg of degradable polycaprolactone, 1.3kg of low-molecular-weight polyhexene wax, and 0.7kg of degradable masterbatch. Mix, extrude, and manufacture masterbatch; then use extrusion-biaxially stretched film manufacturing equipment to process the masterbatch into a film of 17 μm as required; use a wax coater to evenly coat the film with a layer of special ultra-fine silicone oil 6 μm ; After drying, one side of the film coated with ultrafine silicone oil is sprayed with an aluminum layer of 25 nanometers (n meters) by vacuum evaporation vapor deposition (PVD) to obtain the finished product.

[0020] Example 3, take by weighing 40kg of plastic starch, 56kg of degradable polycaprolactone, 2kg of low molecular weight polyhexene wax, and 2kg of degradable color masterbatch, and blend the above materials using a strong feeding type twin-screw extruder, Extrude and manufacture masterbatches; then process the masterbatches into a 19μm fi...

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PUM

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Abstract

A high-isolation full-degradable non-toxic aluminized plastic film as the packing material of food and medicine is prepared from plastic starch, degradable polycaprolactone, low-molecular polyhexane wax and degradable mother particles of pigment through proportional mixing, extruding out, making mother particles, extruding out, stretching to obtain film, coating with a layer of silica oil with 5-10 microns of thickness, and spraying aluminium layer with nano-class thickness.

Description

technical field [0001] The invention relates to a high-barrier, fully-degradable, non-toxic nano-sprayed aluminum film and its application, which belongs to packaging materials, specifically, a high-barrier, fully-degradable, and long-lasting flexible packaging material, especially suitable for flexible packaging of food and medicine. Background technique [0002] At present, flexible packaging materials for food and medicine are mainly plastic products and a small amount of composites of plastic film and aluminum foil. These films are non-degradable, difficult to recycle, and difficult to burn. The serious pollution of these materials to the environment has been recognized by the world; The shortened shelf life of food and medicine caused by packaging materials has brought serious losses to manufacturers; the medical community has found that plastic itself emits harmful gases, and due to long-term accumulation in airtight packaging bags, the concentration also increases with...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B15/08
Inventor 张文知汪漠荣李建国
Owner 烟台光大科技产业发展有限公司
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