Composite membrane used for filter and preparation method thereof

Abstract

The invention relates to the field of medical apparatus and instruments, in particular to a composite membrane used for a filter and a preparation method thereof and aims at providing the composite membrane which is used for the filter and capable of achieving industrial automation and guaranteeing the product quality and the preparation method thereof. The composite membrane is composed of a nuclear track membrane and a lining membrane; the nuclear track membrane and the lining membrane are bonded into a whole through a composite processing method, wherein the nuclear track membrane is made of PET, and the thickness of the nuclear track membrane ranges from 0.01 mm to 0.02 mm; the lining membrane is made of PE or PP, and the thickness of the lining membrane ranges from 0.1 mm to 0.15 mm. The composite membrane has the advantages of being simple in structure, reasonable in design, convenient to use and the like.

Description

technical field [0001] The invention relates to the field of medical equipment, in particular to a composite membrane used on a filter and a preparation method thereof. Background technique [0002] In recent years, automatic stop liquid infusion sets have been widely popularized in Europe and the United States, and are gradually being promoted in China. The filter in the automatic stop liquid infusion set is divided into two types, the fine filter from 0.2 micron to 5 micron, which has a filtration index of 600 square millimeters, a filtration rate of 5 microns and a flow index of 1000ML. [0003] The filter is generally composed of an upper shell, a lower shell, a nuclear pore membrane and a lining membrane. The thickness of the nuclear pore membrane is generally 0.01-0.02mm, and the thickness of the lining membrane is generally 0.1-0.15mm. Since the thickness of the nuclear pore membrane is relatively thin, Therefore, the nuclear pore membranes can only be manually assem...

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Problems solved by technology

[0003] The filter is generally composed of an upper shell, a lower shell, a nuclear pore membrane and a lining membrane. The thickness of the nuclear pore membrane is generally 0.01-0.02mm, and the thickness of the lining membrane is generally 0.1-0.15mm. Since the thickness of the nuclear pore membrane is relatively thin, Therefore, the nuclear pore membrane can only be manually assembled to the filter one by one, which has the disadvantages of low work efficiency and gaps in the joint when the special-shaped parts are installed twice.

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