Film for suction plastic packaging of medical equipment and method for preparing same

Abstract

The invention relates to a film for suction plastic packaging of medical equipment and a method for preparing the same. The film adopts a five-layer structure; the first layer is a heat seal layer A, of which the component is co-mixing resin of linear low-density polyethylene and metallocene catalytic polyethylene taking octene as a comonomer, wherein the content of the metallocene catalytic polyethylene in the co-mixing resin is 20 to 40 weight percent; the second layer is an inner layer B, of which the component is linear low-density polyethylene containing a hexene comonomer; the third layer is a core layer, of which the component is linear low-density polyethylene containing a butene comonomer; the fourth layer is a bonding layer D, of which the component is maleic anhydride grafted polyethylene; and the fifth layer is a weathering resistant layer E, of which the component is nylon 6 or 66. The preparation method comprises the following steps that: the bottom blowing water cooling type co-extrusion process or flow casting method is adopted, and the plastics is subjected to fusion and die inflation or flow casting, and quick cooling at water temperature of between 15 and 18 DEG C. The film and the preparation method have the advantages that: the method is simple; the products have merits of various resins; the film can be thermally sealed with the dialyzing paper without glum spreading; and moreover, the method and the film also have the advantages of low film thickness, good comprehensive property and reutilization.

Description

technical field [0001] The invention relates to a film for blister packaging of medical equipment and a preparation method thereof. Background technique [0002] The medical equipment commonly used in operating rooms is usually packaged with ordinary polyethylene film when leaving the factory. Although it is produced in a purification workshop, it still does not meet the hygienic standards for surgical use. Therefore, these equipment must be thoroughly sterilized after packaging. Bacteria, in order to ensure the safety of the patient's life. The most commonly used method for disinfection and sterilization of packaged medical equipment is high-temperature sterilization, that is, high-temperature sterilization at about 131 degrees for 30 minutes, or penetration of ethylene oxide into the film to kill residual bacteria on the medical equipment. However, ordinary polyethylene film cannot withstand a high temperature of more than 100 degrees, and ethylene oxide cannot penetrate ...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a film for blister packaging of medical equipment that can be well heat-sealed with clear paper without glue application, and the film has a five-layer structure, taking various The advantages of this kind of resin make up for the shortcomings of a single film, so as to achieve the purpose of reducing the thickness of the film, improving the overall performance, and being recyclable.

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