Gravure roll for application of pressure-sensitive adhesive and process for producing pressure-sensitive adhesive tape

Abstract

A technique for producing a pressure-sensitive adhesive tape is provided which attains satisfactory coating pattern reproducibility when a pressure-sensitive adhesive is applied with a gravure roll. Partitions (23) which separate cells (21, 22) formed in the surface of a gravure roll (10a or 10b) are disposed at the boundaries between the cells (21, 22), and fine irregularities (24) are further formed in the surface of the partitions (23) in order to improve coating pattern reproducibility.

Description

technical field [0001] The present invention relates to a technique for producing an adhesive tape using a gravure roll, and more specifically, to a technique for improving the adhesive application efficiency of a gravure roll. Background technique [0002] The tape for cleaning is rolled into a roll with the dirt sticking surface facing the outside. For example, use a special device to rotate the dirt sticking surface along the floor and other surfaces to be cleaned, so that the dirt sticking surface can be captured and cleaned Dirt on the surface. [0003] For example, as shown in Patent Document 1, in conventional adhesive tapes of this type, molten adhesive is extruded from a nozzle to a continuously moving substrate, and the adhesive is coated on the substrate. In this way, the adhesive extruded from the nozzle is directly coated on the substrate, so a stable adhesive layer can be formed. [0004] However, during nozzle coating, although the adhesive layer is stable, ...

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Problems solved by technology

Therefore, in order to form a stable adhesive layer 4, the speed must be reduced to a certain extent, resulting in poor productivity.

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