High obstructing degradable medical multilayer composite packing film and manufacture method thereof

A multi-layer composite and packaging film technology, applied in the field of packaging film manufacturing, can solve the problems of not being an ideal product, being unacceptable in the environment, and difficult to obtain a high-barrier degradable medical packaging film, and achieving the effect of high performance and high barrier properties.

Inactive Publication Date: 2007-08-15
程慧荣 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the 0111 1112.7 patent published in the Chinese patent application, a "composite film material for non-polyvinyl chloride intravenous infusion drug packaging" is described. Its film structure is four-layer, five-layer, and seven-layer. Polypropylene resins or mixtures, etc., but do not involve degradable technical content, are non-environmentally digestible, cannot be added to the biological cycle, and are not the ideal products we hope to obtain
A hydrolyzable and degradable plastic molding material and its preparation method in Chinese Patent Application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The ten-layer structure composite film, the grades of raw materials used from top to bottom are: PA (C35FN), Tie (50E571), SEBS (G1650), PVA (produced by Binzhou Lvhuan Branch), MPE (KF270), GXPO (Adding 1% modified degradable additives or polyamide resin materials), PP (LE3300). Each is put into the required extruder respectively, and the film thickness percentages are respectively:

[0028] 10% / 5% / 2.5% / 5% / 25% / 25% / 5% / 2.5% / 55 / 15%

[0029] Co-extrusion and compounding through laminated die heads, and finished products are obtained through cooling, pulling, crimping, and slitting.

[0030] The specific process conditions are as follows:

[0031] Extruder screw length-to-diameter ratio: 30:1 Inflation ratio: 1:7

[0032] Extrusion line speed: 8-20m / min Screw structure: gradual change, sudden change

[0033] The temperature of each section of the extruder: 170-235°C

[0034] Die head temperature: 200-230°C

[0035] Photodegradation and biodegradation materials are sel...

Embodiment 2

[0037] It is completed by a stacked twelve-channel die head process, and the specific materials and grades of each layer are:

[0038] PET (Cs9127) is added with 20% of the agent and stirred evenly, SEBS (G1651), PP (Z9450), MPE (X136) is added with modified degradable additives or masterbatch is 0.8% of the base resin, stirred evenly into the extruder hopper. GXPO polyolefin resin plus modified nano inorganic material 5%, other materials are the same as above. The thickness percentage between compartments is:

[0039] 10% / 5% / 2.5% / 5% / 12.5% / 12.5% / 12.5% / 12.5% / 5% / 2.5% / 5% / 15%

[0040] Production technology is the same as example 1.

[0041] The high-barrier degradable medical multi-layer composite packaging film obtained in the present invention is not limited to the above examples, but can also be widely used in the packaging of food, meat, vegetables, melons and fruits with high shelf life and insurance products.

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Abstract

A degradable medical multilayer composite packing film uses modified polyester, modified polyamide, and polyvinyl alcohol as baffle layer, adds optical degrade agent and biological degrade agent into polyolefin to control degradation. The invention is characterized in that the film comprises 10-12 layers, which uses nanometer nontoxic modified molecule material and degradable PVA resin as baffle layer. The inventive product has high insulation, degradable property, nontoxic property, high temperature resistance or the like.

Description

technical field [0001] The invention relates to the technical field of packaging film manufacturing, in particular to a medical multi-layer composite packaging film with a variety of non-toxic modified polymer materials and degradable PVA resins as barrier layers. The invention also relates to a preparation method of the packaging film. Background technique [0002] With the strengthening of our country's economic strength and the improvement of people's living standards, people pay more and more attention to their own health and the protection of the environment. In particular, the requirements for medical packaging materials are getting higher and higher, seeking environmental accommodation, high barrier properties, degradable properties, high temperature resistance, high performance, and good non-toxic and hygienic properties. They are mainly used in pharmaceutical packaging and medical device packaging, and have not yet been found. In the past, degradable products were a...

Claims

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Application Information

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IPC IPC(8): B65D65/40B32B27/08B29C69/02B29C55/28B29C47/06B29C47/92B29K67/00B29K77/00B29K21/00B29K29/00B29K23/00B29C48/92
CPCB29C47/92
Inventor 程慧荣白石
Owner 程慧荣
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