High temperature resistance film for blister package of medical equipment and preparation method thereof

Abstract

The invention relates to a high temperature resistance film for blister package of medical sterilization equipment and a preparation method thereof. The first layer of the film is a heat-sealing layer A, and comprises blending resin of block copolymerized polypropylene and metallocene catalyzed polypropylene (mPP), wherein, the melting point of the block copolymerized polypropylene is more than 131 DEG C; the dosage of the mPP accounts for 20 to 50 percent of the blending rein by weight; the second layer of the film is a secondary inner layer B, and comprises homopolymerized polypropylene; the third layer of the film is an intermediate layer C, and comprises homopolymerized polypropylene; the fourth layer of the film is a binding layer D, and comprises polypropylene grafted by maleic anhydride; and the fifth layer is a weather resistance layer E, and comprises nylon 6 or 66. The film is prepared by adopting a bottom blowing water cooling type co-extrusion process or a casting method, wherein, after plastic is sufficiently melted, is inflated or cast by a die, the plastic is cooled at water temperature of between 15 and 18 DEG C. The preparation method is simple, and the product can endure high temperature steam sterilization for long time, and has good heat-sealing performance of dialyzing paper.

Description

technical field [0001] The invention relates to a high-temperature sterilization-resistant medical device blister packaging film 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 e...

AI Technical Summary

Problems solved by technology

At present, the transparent paper commonly used at home and abroad has poor heat-sealability with the above-mentioned blister packaging film, so a layer of hot-melt adhesive must be coated on the transparent paper to increase its heat-sealability

However, after coating a layer of hot melt adhesive on the transparent paper, it is equivalent to blocking most of the paper fiber pores that play a role in leakage, so that the penetration of the transparent paper decreases, making it difficult for ethylene oxide to penetrate, and the sterilization is not complete , and the discharge of harmful gases is also very difficult; at the same time, hot melt adhesives also have the problem of toxic migration and potential safety hazards

Or, use the method of sterilizing the equipment before packaging, but no matter what tools or automatic packaging is used, the equipment will be polluted, and manual packaging will be more polluted; the medical equipment produced in this way will directly affect the patient's health when used in surgery

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