Method for manufacturing medical PE thin film four-side tear-off air-permeable adhesive tape

Abstract

The invention discloses a method for manufacturing a medical PE thin film four-side tear-off air-permeable adhesive tape. The method comprises the step of: perforating the surface of medical PE thin film on which a medical adhesive is coated by heating a burr roller by utilizing a heat transfer oil carrier. The method is characterized in that: a circulation path of heat transfer oil is changed; the interlayer of the inner wall of the roller is removed from the internal structure of the roller of the burr roller; the heat transfer oil flows in the roller directly; the diameters of the inlet and the outlet in the heat transfer oil circulation path are expanded so as to expand the channel of the heat transfer oil; the roller is filled with the heat transfer oil; the heat transfer oil flows smoothly to speed up the circulation speed of the heat transfer oil so that the burr roller is heated uniformly; and holes pressed on the medical PE thin film has the characteristics of uniform size, regular shape and orderly arrangement. The times for washing the roller of the burr roller and the heat transfer oil circulation path are reduced greatly, namely once per year; and the longitudinal direction, the transverse direction, the upper, lower, left and right surfaces of the medical PE thin film manufactured by the method of the invention can be torn linearly.

Description

technical field [0001] The invention relates to a heat conduction oil circulation heating device, in particular discloses a manufacturing method of a medical PE film four-sided tearable air-permeable adhesive tape. Background technique [0002] In order to achieve the four-sided tearability of the medical PE film tape, the existing technology is to punch holes on the surface of the PE film coated with medical adhesive by heating the burr roller to achieve the purpose of tearing. The heat conduction oil circulation heating system of the existing burr roller is to input the heat conduction oil through the interlayer of the inner wall of the roller to make it circulate. Due to the small interlayer and thin wall, after heating for a long time, due to the slow flow of heat transfer oil, it is easy to form carbon on the inner wall of the burr roller due to the influence of high temperature, causing blockage, resulting in uneven heating of the burr roller, and finally affecting the...

AI Technical Summary

Problems solved by technology

Due to the small interlayer and thin wall, after heating for a long time, due to the slow flow of heat transfer oil, it is easy to form carbon on the inner wall of the burr roller due to the influence of high temperature, causing blockage, resulting in uneven heating of the burr roller, and finally affecting the shape of the holes, and the size of the holes is different. Will skew the tape when it is torn

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