D - Textiles – Paper – 21 – H
Patent
D - Textiles, Paper
21
H
D21H 19/72 (2006.01) D21F 11/00 (2006.01) D21H 21/14 (2006.01) D21H 23/56 (2006.01) D21H 27/02 (2006.01) D21H 19/74 (2006.01) D21H 19/76 (2006.01) D21H 21/18 (2006.01) D21H 21/22 (2006.01)
Patent
CA 2257691
A chemically enhanced paper structure (20) having a discrete pattern of a chemical composition is disclosed. The paper structure (20) comprises a cellulose substrate (22) such as tissue paper. The substrate has regions of relatively high (34) and relatively low (38) densities. The chemical composition (24) may include a chemical softener composition or a surface-active composition and is preferentially applied to the low density regions (38) of the substrate. Preferably, the low density regions (38) are discrete (36), so that an essentially continuous high density network (32) is present between the low density regions (36, 38). The paper structure is suitable for use as bath tissue or facial tissue. Preferably, the additive (24) is applied to the paper (22) from a solution (40) in an apparatus (50) comprising at least two axially rotatable rolls, i.e. an anvil roll (56) and optionally a transfer roll (54) and a metering gravure roll (52), forming a gap (60) through which the paper (22) passes, and optionally a nip (58).
L'invention se rapporte à une structure de papier (20) chimiquement améliorée dont une composition chimique est disposée de manière discontinue. La structure du papier (20) comprend un substrat cellulosique (22), par exemple, un papier linge. Le substrat possède des zones à densité relativement basse (38) ou relativement élevée (34). La composition chimique (24) peut comprendre une composition chimique adoucissante ou une composition tensioactive; elle est appliquée, de préférence, à des zones du substrat à basse densité (38), qui sont, de préférence, discontinues (36); cela permet de former entre les zones à basse densité (36,38) un réseau de haute densité (32) sensiblement continu. La structure du papier lui permet d'être utilisé comme serviette de bain ou comme mouchoir. On applique, de préférence, l'additif (24) au papier (22) à partir d'une solution (40), dans un appareil (50) qui comprend au moins deux rouleaux tournant autour de leurs axes respectifs, à savoir un rouleau presseur (56) et un rouleau d'impression (54) ainsi qu'un rouleau doseur à gravure (52) (en option), qui forment un interstice (60) par lequel passe le papier (22); en option, l'appareil comprend un espace (58) entre les deux derniers rouleaux (en option).
Melvin Joe Brian
Phan Dean Van
Trokhan Paul Dennis
Dimock Stratton Llp
The Procter & Gamble Company
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