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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: 2007-05-30
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

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Embodiment Construction

[0039] The film shown in Figure 1 in the production process developed by the present invention has a seven-layer structure and is used to make flexible packaging bags for packaging and using liquid medicine. The medical liquids packaged and used in this way include: saline solution, glucose solution, cleaning solution, dialysate and various other medical liquids. 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 sub-core layer.

[0040] A: It is the first outer layer, and the material is homopolypropylene or copolymerized polypropylene, high-density polyethylene, or any mixture thereof;

[0041] B: is the first adhesive layer, and the material is any one of modified polypropylene or metallocene polypropylene or any mixture thereof;

[0042]C: is the sub-core layer, the material is me...

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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 mold head 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 co-extruded transfusion film and a manufacturing method thereof. technical background [0002] At present, the usual packaging methods for intravenous injections include glass bottles, plastic bottles and flexible packaging bags. Currently, seven-layer co-extrusion infusion bags are 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. In addition, the liquid medicine bag must provide sufficient water vapor and gas barrier properties to prevent the packaged liquid from being contaminated. [0003] Compressibility is to ensure that the liquid medicine can be completely discharged from the bag, unlike rigid liquid packaging containers (glass bottles and plastic bottles), which rely on ...

Claims

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Application Information

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Patent Type & Authority Applications(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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