Title:
【発明の名称】流動性が潜在する天然ポリマーを含有し密度差のあるセルロース系構造体を製造する超音波付与方法
Document Type and Number:
Japanese Patent JP2002513100
Kind Code:
A
Abstract:
A process and an apparatus for making a differential density cellulosic web comprising a first plurality of high-density micro-regions and a second plurality of low-density micro-regions are disclosed. The process comprises the steps of providing a fibrous web containing fluid-latent indigenous polymers and water; depositing the web on a fluid-permeable molding fabric; applying ultrasonic energy to the web, thereby contributing to softening of the fluid-latent indigenous polymers in at least selected portions of the web; impressing the molding fabric into the web, thereby densifying the selected portions of the web and causing the fluid-latent indigenous polymers to flow and interconnect the fibers which are mutually juxtaposed in the selected portions; and immobilizing the fluid-latent indigenous polymers, thereby creating bonds thereof between the fibers which are interconnected in the selected portions. An apparatus comprises an ultrasonic means for applying ultrasonic energy to the web associated with the molding fabric, and a pressing means for impressing the molding fabric into the web.
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Inventors:
Torokhan Paul Dennis
Senapati Nagabusan
Senapati Nagabusan
Application Number:
JP2000546099A
Publication Date:
May 08, 2002
Filing Date:
April 12, 1999
Export Citation:
Assignee:
THE PROCTER AND GAMBLE COMPANY
International Classes:
D21H27/00; D21F3/00; D21F5/02; D21F11/00; (IPC1-7): D21F11/00
Attorney, Agent or Firm:
Akira Okawa (1 person outside)