Medical sterilizing packaging material capable of efficiently sterilizing
A packaging material and medical technology, applied in the field of high-efficiency sterilization medical sterilization packaging materials, can solve the problems of recycling paper-plastic composite materials, shorten the analysis time, reduce the adsorption of EO or formaldehyde vapor, etc. The effect of good air permeability and good mechanical strength
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Embodiment 1
[0079] A single-layer polypropylene porous film with a thickness of 120 μm and a porosity of 75% was prepared by the melt stretching method, and it was used as the upper layer 1 and the lower layer 2 of the medical sterilization packaging material at the same time, and the two were sealed by heat sealing. Connect to obtain the airtight cavity 3. The lower layer 2 is provided with a rectangular hole, and the upper layer 1 is provided with an EO sterilization indicator mark 6 . Some polypropylene porous films were selected to measure air permeability, porosity, tensile strength, puncture strength, average pore size and melting point. The results are shown in Table 1.
Embodiment 2
[0081] A three-layer polypropylene porous film with a thickness of 20 μm (total thickness) and a total porosity of 45% is prepared by a melt stretching method, which is used as the upper layer 1 and the lower layer 2 of the medical sterilization packaging material at the same time, and is sealed by heat sealing. The two are connected by means of a closed cavity 3 . The lower layer 2 is provided with a rectangular hole 5 , and the upper layer 1 is provided with an EO sterilization indicator mark 6 . Some three-layer polypropylene porous films were selected for measurement of air permeability, porosity, average pore size, tensile strength, puncture strength and melting point. The results are shown in Table 1.
Embodiment 3
[0083] A polypropylene / polyethylene / polypropylene porous composite film with a thickness of 12 μm (total thickness) and a total porosity of 60% is prepared by a melt stretching method, which is used as the upper layer 1 and the lower layer 2 of the medical sterilization packaging material at the same time, The two are connected by means of heat sealing to obtain an airtight cavity 3 . The lower layer 2 is provided with a rectangular hole 5 , and the upper layer 1 is provided with an EO sterilization indicator mark 6 . Some polypropylene / polyethylene / polypropylene porous composite films were selected to measure air permeability, porosity, average pore size, tensile strength, puncture strength and melting point. The results are shown in Table 1.
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