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A five-layer co-extrusion film for transfusion and its preparation process

A preparation process and a technology for transfusion membranes, which are applied in the field of five-layer co-extrusion transfusion membranes and their preparation processes, can solve the problems of high equipment requirements, low membrane cost, poor flexibility, etc., to avoid secondary pollution, low adsorption, good flexibility effect

Active Publication Date: 2020-08-18
HUBEI HUAQIANG HIGH TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Currently, the non-PVC multi-layer co-extruded infusion films on the market are three-layer co-extruded infusion films and five-layer co-extruded infusion films, of which three layers are co-extruded Extrusion film for infusion is low in cost and high in strength, but poor in flexibility and brittle, especially at low temperature, it is easy to cause liquid leakage; five-layer co-extrusion film for infusion has good flexibility and good barrier properties, and can meet various conditions. Use, but the outer polyester material has high requirements for equipment and high cost

Method used

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  • A five-layer co-extrusion film for transfusion and its preparation process
  • A five-layer co-extrusion film for transfusion and its preparation process

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Embodiment Construction

[0041] Such as figure 1 Shown is the distribution of each layer of the five-layer co-extruded film of the present invention. Depend on figure 1 It can be seen that the five-layer co-extruded film of the present invention is composed of the outer layer, the second outer layer, the middle layer, the second inner layer and the inner layer respectively in terms of structural composition.

[0042] The total thickness of the five-layer co-extruded film is 160-220 μm.

[0043] Prepare the outer layer from the raw materials in the following mass percentages: homopolypropylene 80%, styrene-ethylene-butadiene hydrogenated block copolymer 20%; wherein homopolypropylene is measured according to GB-T3682 at 230°C / The melt flow rate of 2.16Kg is 7.0g / 10min; the melt flow rate of styrene-ethylene-butadiene hydrogenated block copolymer is 3.0g / 10min measured at 230℃ / 2.16Kg according to GB-T3682; the thickness In 20 ~ 30μm;

[0044] The preparation of the second outer layer consists of th...

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Abstract

The invention relates to a five-layer co-extrusion infusion film and a preparation process thereof. An outer layer is composed of a homo-polypropylene and a styrene-ethylene-butadiene hydrogenated block copolymer, a secondary outer layer is composed of an ethylene methyl acrylate copolymer and modified linear low-density polyethylene, a middle layer is composed of an ethylene-octene copolymer andmodified linear low-density polyethylene, a secondary inner layer is composed of metallocene low-density polyethylene and linear low-density polyethylene, and an inner layer is composed of an ethylene-propylene copolymer and a styrene-ethylene-butadiene hydrogenated block copolymer; and the preparation process comprises the following steps: separately sucking each layer of raw materials into eachextruder hopper, performing plasticizing, performing filtering and removing impurities through a filter screen, performing extrusion separately through a connecting pipeline and a die head, and combining five layers in a mouth model place to form a green body; and performing one-time wind cooling on the green body, performing cooling by using water ring water to obtain the high-transparency product. The preparation process provided by the invention ensures the properties such as film light transmittance, low-temperature heat sealability, heat sealing strength, printability, and resistance to cooking at 121 DEG C.

Description

technical field [0001] The invention relates to a film for intravenous infusion medicine packaging, in particular to a five-layer co-extrusion film for infusion and a preparation process thereof. Background technique [0002] The widely used infusion packaging is glass bottles and hard plastic bottles. They have a weakness, that is, they need to form an air circuit during use, which increases the secondary pollution during the infusion process, especially in hospitals where there are many bacteria. and places with poor sanitation. During use, the PVC infusion soft bag can rely on its own tension to compress the liquid medicine to drip out, which greatly reduces the probability of secondary pollution of the liquid medicine, but the disadvantage is that it contains the plasticizer diisooctyl phthalate (DEHP) A harmful substance that seriously endangers human health. The State Food and Drug Administration stopped the registration of PVC infusion bags as early as September 2000...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/08B32B27/30B32B27/32B29C48/18B29C69/02B29L23/00B29L9/00
CPCB29C48/0018B29C48/10B29C48/21B29L2009/00B29L2023/001B32B27/08B32B27/304B32B27/32B32B2307/306B32B2307/412B32B2439/80
Inventor 宋小东万鹏楚文军肖怀泽叶血清吴青
Owner HUBEI HUAQIANG HIGH TECH CO LTD
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