Sheet material processing method and device

Abstract

The invention provides a sheet material processing method and device. The sheet material processing method is used for processing the sheet material (100 between two rollers (7A, 8) which are arranged oppositely, wherein, the processing method includes at least one of the compacting of the sheet material, the heat seal of sheet materials and the cut off of an elastomeric element arranged among the sheet materials, in the processing method, the outer periphery temperature of at least one roller (8) is respectively controlled in a plurality of thermal treatment zones arranged in the shaft direction of the roller, while the sheet materials (100) are processed.

Description

technical field [0001] The invention relates to a processing method and a processing device for a sheet. Background technique [0002] In the past, in the manufacture of sanitary products such as disposable diapers and sanitary napkins, heat rollers were often used for (sealing) bonding between two sheets and cutting of sheets or elastic members. However, if the surface temperature of the heat roller Unevenness makes it difficult to perform stable joining or cutting. [0003] As a technique for making the surface temperature of the heat roller uniform, Japanese Patent Application Laid-Open No. 2006-185696 (hereinafter referred to as Patent Document 1) describes the following content: Considering the heat dissipated from the end of the axial direction of the roller, the arrangement The heating value of the heater near the end is greater than that of the heater arranged in the center. [0004] However, in recent years, high-precision machining is often required, and simply d...

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Problems solved by technology

[0004] However, in recent years, high-precision machining is often required, and simply disposing a heater with a large calorific value in the center as in the technology of Patent Document 1 cannot fully meet such requirements.

For example, the surface temperature of the roller may change due to heat dissipation when the roller rotates, heat dissipated from the roller to the sheet in contact with the roller, heat dissipation from the opposing roller, etc., and changes in conditions or environments during sealing or cutting, A heater with a large heat generation is placed only in the center, and it may not be able to perform high-precision sealing or cutting due to the influence of such small changes.

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