Waterproof, anti-corrosion and breathable expanded polytetrafluoroethylene material modified film for packaging bottle cap and preparation method thereof

Abstract

The invention relates to a waterproof, anticorrosive and air-permeable expanded polytetrafluoroethylene (e-PTFE) material modified membrane for packing a bottle cap and a preparation method thereof. The e-PTFE material modified membrane comprises an e-PTFE microporous membrane layer for enhancing oil repellence capability and a modification processing layer which are connected together. The e-PTFE material modified membrane has the beneficial effects that pressure balance is realized, rupture, collapse and leakage of a container are prevented, the requirements for water resistance, dust prevention, oil resistance, ventilation, oxidation resistance and acid-base solution corrosion resistance are met, the strength of the material is enhanced and the good welding compactness between the e-PTFE material modified membrane and a plastic product is realized, thus being applicable to developing waterproof and air-permeable stoppers for various packing plastic bottle caps; by virtue of unique press-fitting design, the waterproof and air-permeable stoppers for the packing plastic bottle caps can be manually and automatically installed; and package can be improved without redesign in the case of a series of air-permeable products and ready-to-use components with different sizes.

Description

technical field [0001] The invention relates to a modified film, in particular to a water-proof, anti-corrosion and breathable expanded polytetrafluoroethylene material modified film for packaging bottle caps and a preparation method thereof. Background technique [0002] Chemical liquids, such as bleach, hydrogen peroxide, peracetic acid, pesticides, cleaning agents, fungicides, etc., or strong acid and alkali solutions or powder packaging containers have very strict requirements. In order to solve this problem, some packaging containers used to use Airtight structure, the packaging container is sealed packaging, with the accumulation of gas in the container or the rise and fall of temperature, this kind of container will burst, collapse, cap cannot be opened or leak chemicals due to the imbalance of internal and external gas pressure. Safety production and transportation bring safety hazards. Inflated or sunken packaging will damage the corporate brand image and affect ec...

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Problems solved by technology

[0002] Chemical liquids, such as bleach, hydrogen peroxide, peracetic acid, pesticides, cleaning agents, fungicides, etc., or strong acid and alkali solutions or powder packaging containers have very strict requirements. In order to solve this problem, some packaging containers used to use Airtight structure, the packaging container is sealed packaging, with the accumulation of gas in the container or the rise and fall of temperature, this kind of container will burst, collapse, cap cannot be opened or leak chemicals due to the imbalance of internal and external gas pressure. Safety pr

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