Title:
USE OF RECYCLED WASTE WATER FOR PRODUCING NONWOVEN FIBROUS MATERIALS
Document Type and Number:
Japanese Patent JP2020114959
Kind Code:
A
Abstract:
To provide a nonwoven fibrous material suitable for use as a heat insulating material or soundproofing agent.SOLUTION: There is provided a method of producing a nonwoven fibrous material, the method comprises: providing a first slurry containing water, first inorganic fibers, a first organic binder, and a first neutral pH flocculent; removing first waste water from the first slurry; providing a second slurry containing a quantity of the first waste water, an optional quantity of relatively clean water, second inorganic fibers, a second organic binder, and a second flocculent that is a flocculent the same as and/or different from that used in the first slurry; and forming a second nonwoven fibrous material from the second slurry. The addition of the first waste water to the second slurry does not adversely affect the aggregation of the second organic binder in the second slurry.SELECTED DRAWING: Figure 1
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Inventors:
MERRY RICHARD P
IAN R I HARDING
GARY F HOWORTH
IAN R I HARDING
GARY F HOWORTH
Application Number:
JP2020071392A
Publication Date:
July 30, 2020
Filing Date:
April 13, 2020
Export Citation:
Assignee:
3M INNOVATIVE PROPERTIES CO
International Classes:
D21H13/36; F01N3/28
Domestic Patent References:
| JPS58180700A | 1983-10-22 | |||
| JP2008201126A | 2008-09-04 | |||
| JP2006517621A | 2006-07-27 | |||
| JPH0625993A | 1994-02-01 | |||
| JPH02311344A | 1990-12-26 |
Attorney, Agent or Firm:
Taro Akazawa
Wakako Nomura
Tsukuda Seigen
Keiichi Asamura
Wakako Nomura
Tsukuda Seigen
Keiichi Asamura