Filtering material and method of producing the same

Details Filtering material and method of producing the same Filtering material and method of producing the same

1992-11-05

1994-10-04

Bell, Janyce

Chemical apparatus and process disinfecting, deodorizing, preser

For deodorizing of, or chemical purification of, or...

Including solid, extended surface, fluid contact reaction...

427202, 427203, 427244, 427361, 427384, 427421, 427422, 427439, 4274191, 427 231, A62B 708, B05D 500

Patent

active

053524187

ABSTRACT:
A filtering material employable for a variety of application fields in the form of a sanitary mask, a deodoring filter or the like comprises calcium phosphate particles, .beta.-1,3-glucan and a band-shaped raw material, and the calcium phosphate particles each serving as a filtering medium are caused to adhere to the sheet-shaped raw material with the aid of the .beta.-1,3-glucan serving as a binder. A method of producing a filtering material is practiced by way of a first step of stirring a predetermined quantity of calcium phosphate particles and a predetermined .beta.-1,3-glucan in hot water at a high speed to prepare an aqueous treatment solution, a second step of dipping a sheet-shaped raw material in the aqueous treatment solution and taking up the sheet-shaped raw material, and a third step of drying the sheet-shaped raw material after completion of the taking-up operation. A second step of spraying the aqueous treatment solution over the sheet-shaped raw material may be substituted for the aforementioned second step. In addition, a step of allowing the aqueous treatment solution to adhere to the sheet-shaped raw material with the aid of a rolling roller may be substituted for the aforementioned second step. An aqueous preliminary treatment solution having a predetermined quantity of .beta.-1,3-glucan uniformly dispersed in hot water may be substituted for the aforementioned aqueous treatment solution. In this case, calcium phosphate particles are caused to adhere to the sheet-shaped raw material before the aqueous preliminary treatment solution is completely dried.

REFERENCES:
patent: 4075405 (1978-02-01), Takahashi et al.
patent: 4398023 (1983-08-01), Miyachi et al.
patent: 5143752 (1992-09-01), Nakajima et al.

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