A kind of heat-sealing composite material and preparation method thereof

Abstract

The invention relates to a heat-seal composite material and a preparing method of the heat-seal composite material. The heat-seal composite material comprises an outer isolation layer, a middle layer and an inner heat-seal layer. The outer isolation layer is made of thermoplasticity polymers. The face, in contact with the middle layer, of the outer isolation layer is coated with hot melt adhesive for bonding. The middle layer is made of medical dialyzing paper, and the two faces of the medical dialyzing paper are coated with hot melt adhesive for bonding. The inner heat-seal layer is made of hot meltable adhesive film. The outer isolation layer, the middle layer and the inner heat-seal layer are compositely molded with the hot-pressing composite technology. By means of the heat-seal composite material and the preparing method, reeling shrinking can be effectively prevented, the good tearing resistance is achieved, residual oxirane is avoided, and the production cost is saved.

Description

technical field [0001] The invention relates to the field of paper-plastic materials, and more specifically relates to a heat-sealing composite material and a preparation method thereof. Background technique [0002] In the prior art, in the field of outer packaging of medical devices, most of the sealing lid materials of blister and injection molded hard boxes (such as PET, PS, PVC, etc.) use American medical Tyvek lid materials, that is, American DuPont Medical paper + medical glue. DuPont Tyvek packaging lids are widely used in the field of medical machinery because of their high strength and strong puncture resistance. At the same time, due to their special structure, they are conducive to low-temperature disinfection of the medical devices in their inner packaging, and can Ensure the sterility and integrity of the packaged equipment prior to use. [0003] At present, ethylene oxide is widely used for low-temperature disinfection in the field of medical machinery. Eth...

AI Technical Summary

Problems solved by technology

However, under the condition that American Tyvek cover materials are widely used, there will be certain residues of ethylene oxide during the disinfection process, which will remain on medical devices or their packaging, causing certain damage to users

At the same time, in the field of medical device packaging, for the convenience of transportation or use and sales, some smaller medical devices need to be packaged into a larger unit after being individually packaged and sterilized, which requires multiple times of ethylene oxide Alkane disinfection will cause more residues

At the same time, in the manufacturing process, Tyvek cover materials from the United States are widely used, which still has the disadvantages of high price and high production cost.

Moreover, the above-mentioned cover material of the prior art is difficult to print on its surface, which causes a lot of inconvenience to consumers during use.

[0004] In the prior art, the plastic (such as PE, PET, etc.) cover materials still have shrinkage and curling during heat sealing, which will cause poor heat sealing and increase the output of defective products, which not only affects the quality of the inner packaging products, waste of raw materials

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