Blister packaging film for gamma ray disinfection and preparing method thereof

Abstract

The invention discloses a blister packaging film for gamma ray disinfection. The blister packaging film comprises seven layers, wherein the layer A is made from polyamide 6, the layer B is made from bonding resin, the layer C is made from 60-80% linear low-density polyethylene and 20-40% low-density polyethylene, the layer D is made from bonding resin, the layer E is made from polyamide resin, the layer F is made from bonding resin, and the layer G is made from 60-80% linear low-density polyethylene and 20-40% metallocene polyethylene; the thickness of the layer A accounts for 5-10% of the total thickness of the blister packaging film, the thickness of the layer B accounts for 5-10% of the total thickness of the blister packaging film, the thickness of the layer C accounts for 20-30% of the total thickness of the blister packaging film, the thickness of the layer D accounts for 5-10% of the total thickness of the blister packaging film, the thickness of the layer E accounts for 5-10% of the total thickness of the blister packaging film, the thickness of the layer F accounts for 5-10% of the total thickness of the blister packaging film, and the thickness of the layer G accounts for the rest of the total thickness of the blister packaging film. The blister packaging film is obtained through extrusion, film blowing, air cooling, water-cooling setting, surface treatment and coiling, integration of different layers is good, biphase separation does not occur during blister forming, the mechanical strength of products is high, polyethylene (PE) and medical dialyzing paper heat sealing effect is good, sealing starting temperature is low, heat sealing strength is high, and the blister packaging film is especially suitable for gamma ray disinfection.

Description

technical field [0001] The invention relates to the field of blister packaging films, in particular to a blister packaging film used for gamma ray disinfection for automatic packaging of medical instruments and medical dressings and a preparation method thereof. Background technique [0002] Medical blister packaging film is mainly used for the packaging of paper-plastic easy-tear and plastic-plastic easy-tear medical devices in disposable preformed aseptic systems. Nowadays, after the medical equipment used in the operating room is packaged with blister packaging film, it must be thoroughly sterilized before leaving the factory to ensure the safety of the patient's life. [0003] Most of the current medical blister packaging films are three or five layers. During the preparation process of multi-layer co-extrusion, the materials of each layer cannot be well compounded, and they will be separated after compounding, so that the prepared multi-layer co-extrusion medical Blist...

AI Technical Summary

Problems solved by technology

[0003] Most of the current medical blister packaging films are three or five layers. During the preparation process of multi-layer co-extrusion, the materials of each layer cannot be well compounded, and they will be separated after compounding, so that the prepared multi-layer co-extrusion medical Blister packaging film will produce two-phase separation in the process of blistering, reducing its physical and mechanical properties

At the same time, the performance of the current blister packaging film cannot meet the requirements of gamma ray disinfection and needs to be improved.

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