Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Reexamination Certificate
2000-12-01
2004-03-16
Aftergut, Jeff H. (Department: 1733)
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
C156S276000, C156S209000, C156S324000, C264S518000, C264S121000, C264S122000
Reexamination Certificate
active
06706129
ABSTRACT:
BACKGROUND OF THE INVENTION
This invention relates to a method for manufacturing a particle deposited body and more particularly to a method for manufacturing a particle deposited body, which is capable of effectively manufacturing a particle deposited body suited to be used for manufacturing an absorbent core in an absorbent article such as a disposable diaper, a sanitary napkin and the like.
A method and an apparatus for scattering particles on a porous web are disclosed in U.S. Pat. No. 4,551,191. In the method and the apparatus disclosed in U.S. Pat. No. 4,551,191, however, although it is possible to scatter particles so as to be uniformly dispersed on a porous web, it is impossible to deposit the particles thereon in a desired pattern. Moreover, it is difficult to make the transfer speed of the porous web at a high speed and it is also impossible to make a continuous production of a deposited body of particles used for, among others, manufacturing an absorbent core at a high speed.
SUMMARY OF THE INVENTION
It is, therefore, an object of the present invention is to provide a method for manufacturing a particle deposited body, which is capable of making a continuous production of a particle deposited body suited to be used for manufacturing an absorbent core in a disposable diaper, a sanitary napkin, etc., at a high speed and which is capable of making the contour of the deposited portion of the particles in a desired pattern at that time.
The present invention has achieved the above object by providing a method for manufacturing particle deposited body comprising supplying, under sucking condition, particles entrained by air on a continuous carrier sheet which is running at a prescribed direction to deposit the particles on the carrier sheet, thereby obtaining a particle deposited body comprising the particles and the carrier sheet, the carrier sheet having an air-permeability of 4.0 seconds/(300 ml·32 pcs.) or less. It should be noted that the expression “particles are deposited on a carrier sheet” used herein includes not only a concept in which the particles are deposited on or in the carrier sheet but also a concept in which the particles are deposited on or in another sheet(s) which is laminated on the carrier sheet.
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Ando Kenji
Hirasawa Hiroshi
Maeda Kazuyuki
Sato Ken'ichi
Umeki Yasuhiro
Aftergut Jeff H.
Birch & Stewart Kolasch & Birch, LLP
Kao Corporation
Musser Barbara J
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