Controllable-stripping heat-sealing film for sterilizing and packaging medical instruments and preparation method of controllable-stripping heat-sealing film

Abstract

The invention discloses a stripping-controllable heat-sealing film for sterilizing and packaging medical instruments and a preparation method of the heat-sealing film, and the heat-sealing film can beheat-sealed with medical dialyzing paper base paper or coating dialyzing paper (6) to prepare a paper-plastic bag for sterilizing and packaging the medical instruments. The opening stripping force and the opening interface of the paper-plastic bag are controllable, and the sealing integrity of the paper-plastic bag can be judged through layer separation and color change on the film at the stripping position; wherein the PET plastic base film (1) is divided into a front surface and a back surface, and the front surface is a printable surface (2); the back surface is a heat-seal layer (3); andthe heat-seal layer (3) consists of a bottom coating (4) coated on the PET plastic base film (1) and a surface adhesive layer (5) coated on the bottom coating (4). And sequentially coating the selected bottom coating (4) and surface adhesive layer (5) on the reverse side of the PET plastic base film by using an anilox roller coating machine, and slitting and packaging after the PET plastic base film is qualified, thereby obtaining the product.

Description

technical field [0001] The invention belongs to the technical field of medical packaging materials, and in particular relates to a controllable stripping heat-sealing film used for sterilization packaging of medical devices and a preparation method thereof. Background technique [0002] In the prior art, the plastic heat-sealing film used for sterilization packaging of medical devices is usually made of different plastic particles through co-extrusion and then biaxially stretched; it is also made by compounding different plastic films with compound glue. Plastic heat-sealing films used for medical device sterilization packaging are most commonly used: composite films of PE / PET, CPP / PET and other types of plastics. Among them, PE / PET type composite film is widely used for heat-sealing bags with medical dialysis paper, used for gas sterilization packaging of common medical devices, and is the most important composite heat-sealing film for paper-plastic sterilization bags. [...

AI Technical Summary

Problems solved by technology

Different medical devices, sterilization bags of different shapes and sizes, and different sterilization methods require different peeling forces. They often have individual requirements and require specific peeling forces and peeling effects. Traditional glue coating The paper-plastic bag made of heat-sealing dialysis paper and composite film is difficult to realize the quantitative design of the peeling force, the peeling force is not easy to quantitatively control, and the peeling interface is difficult to accurately control

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