Continuous filament-yarn opening method and apparatus thereof

Abstract

A method and an apparatus for opening continuous filaments to solve a problem that in opening a crimped tow, qualities of a fiber layer after opening are not stabilized and the change of various opening conditions is difficult when the kind of the tow is changed. Sliding plates 11 and 12 are brought into contact with a crimped tow 2A being transported between a transfer roll 4a and transfer rolls 5a and 5b. Continuous filaments arranged in the thickness direction of the tow 2A are provided with a shear by a sliding force produced when the tow 2A is slid on the sliding plates 11 and 12 and opened so that a fiber layer 2B in which the continuous filaments are dispersed in the width direction can be obtained.

Description

technical field [0001] The present invention relates to a fiber-splitting method and a fiber-splitting device for splitting continuous filaments used as a surface layer or the like of absorbent articles such as sanitary napkins from crimped tow. Background technique [0002] As the surface layer of absorbent articles such as sanitary napkins, for example, composite synthetic fibers having a core sheath structure such as PE / PP and PE / PET are used. In addition, continuous filaments may be used as the aforementioned composite synthetic fibers. [0003] The said continuous filament is supplied to the manufacturing process of the said absorbent article etc. in the state which bundled so that a filament may adhere|attach and form crimped tow (TOW). In addition, in the above-mentioned manufacturing process, the continuous filaments of the above-mentioned tow are separated from each other in the width direction, and are opened to widen the width. In the opening step, the continuou...

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Problems solved by technology

[0009] In addition, when the bundled state of the tow or the basis weight (Japanese fabric basis weight), or the fineness of the continuous filament or the material of the continuous filament is changed, it also includes the case where the fiber cannot be opened optimally under the same conditions, At this time, it is very difficult to change the procedure of the above-mentioned various conditions, and the cost of changing the equipment is very high.

[0010] In the method of splitting the tow by air jet, it is very difficult to maintain the uniformity of fiber splitting because the continuous filaments are very messy under the air flow.

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