Seven-layer coextrusion membrane for transfusion and its production method

A film and outer layer technology for infusion, which is applied in the field of co-extrusion film for infusion and its manufacturing, and can solve the problems of compressibility, mechanical strength and optical properties, etc.

Inactive Publication Date: 2010-05-12
安徽双津实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] A particularly difficult challenge in the design and manufacture of polyolefin-based pharmaceutical pouch films is ensuring that the pouch meets the above performance criteria after heat sterilization
Because the high temperature and steam in the heat sterilization process have an adverse effect on the compressibility, mechanical strength, optical properties of the bag

Method used

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  • Seven-layer coextrusion membrane for transfusion and its production method
  • Seven-layer coextrusion membrane for transfusion and its production method

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Embodiment Construction

[0038] Such as figure 1 The film shown in the production process developed by the present invention has a seven-layer structure and is used to manufacture flexible packaging bags for packaging and using liquid medicines. The liquid medicines packaged and used in this way include: salt liquid, glucose liquid, cleaning liquid, dialysate and many other liquid medicines. The seven-layer film includes a core layer, a first outer layer, a second outer layer, a first adhesive layer between the first outer layer and the core layer, a second adhesive layer between the second outer layer and the core layer, and two A secondary core layer.

[0039] A: It is the first outer layer, the material is homopolypropylene or copolymer polypropylene, any one of high density polyethylene or any mixture thereof;

[0040] B: It is the first adhesive layer, the material is any one of modified polypropylene or metallocene polypropylene or any mixture thereof;

[0041] C: is the secondary core layer, the mat...

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PUM

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Abstract

The seven layer common transfusion liquid membrane usually comprises a vinyl copolymer formed core layer, two metallocene yarns low density polyethylene formed sub core layers, polyacrylic acid or polypropylene or high intensity polyethylene selected No.1 outside layer, polyester, copolyester, polypropylene or nylon formed No.2 outside layer, No.1 adhesion layer between sub core layer and No.1 outside layer, and No.2 adhesion layer between No.2 outside layer and core layer. Using this seven extruder to melt and extrude materials of each layer through seven layers conical or flat overlaid moldhead and 100 degree purified gas with computer controlling the inflation film diameter and thickness, it makes the double layer film roll, after Co60 lighting or hard electron radiating to get high resistance, transpancy, flexibility, in conformity to all kinds of medical, biological or chemical regulations.

Description

Technical field [0001] The invention belongs to a medical film made of polymer materials, in particular to a film for co-extrusion infusion and a manufacturing method thereof. technical background [0002] At present, the usual packaging methods for intravenous liquids include glass bottles, plastic bottles and flexible packaging bags. Seven-layer co-extruded infusion bags are currently commonly used in flexible packaging bags. These bags must meet many performance indicators, including compressibility, optical clarity and transparency, high temperature resistance, biological properties, and sufficient mechanical strength to withstand In a harsh environment, the liquid medicine bag must provide sufficient water vapor and gas barrier properties to prevent the packaged liquid from being contaminated. [0003] The compressibility is to ensure that the liquid medicine can be completely discharged from the bag. Unlike rigid liquid packaging containers (glass and plastic bottles) that r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/08B32B27/32B32B27/18B32B7/12B29C55/28B29C71/04
Inventor 唐新国
Owner 安徽双津实业有限公司
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