Eugene J Pietreniak

US Patent:

40963110, Jun 20, 1978

Filed:

Oct 31, 1975

Appl. No.:

5/627657

Inventors:

Eugene J. Pietreniak - Chester PA

Assignee:

Scott Paper Company - Philadelphia PA

International Classification:

D21H 344
B22C 1708
C11D 172
C11D 1704

US Classification:

428289

Abstract:

Wipe-dry characteristics of non-woven, dry-formed webs are improved by a post-treatment process that adds water and a surfactant to the web followed by wet-working the web. The effectiveness of the surfactant for improving the wipe-dry capability is noticeably enhanced by working the web while it is still wet with the water and the surfactant. Preferred surfactant addition is from about 0. 5% to about 3% by weight surfactant based upon the weight of the web.

US Patent:

41276370, Nov 28, 1978

Filed:

Mar 13, 1975

Appl. No.:

5/558054

Inventors:

Eugene J. Pietreniak - Newark DE
Joseph Stankavage - Chester PA

Assignee:

Scott Paper Co. - Philadelphia PA

International Classification:

D04H 164

US Classification:

264114

Abstract:

This invention relates to a unique method of fabricating a dry-formed, adhesively bonded nonwoven sheet and to the sheet formed thereby. The method of this invention includes the steps of forming a low integrity, dry-formed fibrous web having a basis weight in the range of from about 30 grams per square meter to about 170 grams per square meter; embossing the web to provide spaced-apart densified regions and high loft regions with the densified regions covering from about 15% to about 40% of the planar area of the web and having a density greater than about 0. 150 grams per cubic centimeter, and with the high loft regions having a density of less than about 0. 100 grams per cubic centimeter; stabilizing the embossed pattern with a binder for retaining a differential density within the embossed web as it is directed to a creping surface and creping the embossed web by adhering it to a creping surface under conditions which do not destroy the differential density in the embossed web and employing a creping doctor blade which foreshortens the web as it removes it from the creping surface for forming a creped, aesthetically pleasing nonwoven sheet of this invention in which the surface appearance resulting from the creping operation is controlled by the embossed pattern.