Novel multilayer co-extrusion medical transfusion film and preparation method thereof

A multi-layer co-extrusion and infusion film technology, which is applied in the direction of chemical instruments and methods, layered products, synthetic resin layered products, etc., can solve the problems of patients' health hazards, poor transparency of polyamide, and people's health hazards, etc., to achieve Avoid bacterial contamination, facilitate transportation, and ensure hygienic performance

CN102602094AActive Publication Date: 2012-07-25CHANGZHOU UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2012-07-25

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Abstract

The invention relates to a novel multilayer co-extrusion medical transfusion film and a preparation method of the novel co-extrusion medical transfusion film. The materials of the novel multilayer co-extrusion medical transfusion film are divided into five layers in composition, wherein the first layer is an internal layer A and the ingredient of the internal A is polypropylene catalyzed by metallocene; the second layer is a bonding layer B and the ingredient of the bonding layer B is an ethylene-vinyl acetate copolymer; the third layer is a core layer C and the ingredient of the core layer C is mixed resin composed by random copolymerization polypropylene and an ethylene-alpha-octylene copolymer; the fourth layer is a bonding layer D and the ingredient of the bonding layer D is an ethylene-alpha-octylene copolymer; and the fifth layer is a weather-resistant layer E and the ingredient of the weather-resistant layer E is mixed resin composed by a random copolymerization polypropylene material, a styrene-ethylene-bivinyl rubber-styrene copolymer, and an ethylene-alpha-octylene copolymer. A multilayer co-extrusion technology is adopted in the preparation. The multilayer co-extrusion medical transfusion film provided by the invention has the advantages of high transparency, good weather-resistance and flexibility, wear resistance and the like, and is particularly appropriate for use as a packaging material in the field of medicine.
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Description

technical field

[0001] The invention relates to a film material used in medicine for packaging infusion, in particular to a multi-layer co-extruded medical infusion film and a manufacturing method thereof. Background technique

[0002] At present, my country's medical infusion containers are mainly glass bottles. Although glass bottles have the advantages of high chemical stability, good transparency, and low price, they have disadvantages such as heavy weight, easy damage, high melting point, and inconvenient portability. This restricts the development space of glass infusion containers in large infusion products.

[0003] In recent decades, the application of PVC as medical infusion bags, blood bags, and infusion tubes has become increasingly rapid. The advantages of PVC in medical equipment, such as transparency, flexibility, and low cost, have been widely recognized, but PVC still has fatal shortcomings as a packaging material for medical infusions:

[0004] (1) In th...

Examples

Embodiment Construction

[0044] The present invention is described in detail below through specific examples, but the protection scope of the present invention is not limited.

[0045] The main production equipment used to make the multi-layer co-extrusion infusion film in the present invention is a five-layer co-extrusion blow molding unit. Other devices, unless otherwise specified, adopt conventional production equipment in this field.

[0046] Such as figure 1 Shown is the distribution of each layer of the multilayer co-extruded infusion solution film of the present invention. Depend on figure 1 It can be seen that the multi-layer co-extrusion infusion film of the present invention has a five-layer structure in terms of structure and composition, which are inner layer A, adhesive layer B, middle layer C, adhesive layer D and outer layer E. The materials used for each layer are:

[0047] The metallocene catalyzed polypropylene used in the inner layer A has a melt index of 2-10 g / min and a densit...