Sca Tissue France

Georgia-pacific France

Essity Operations France

Fort James France

Sa Tissue France

Pierre Probst

Pierre Graff

Remy Ruppel

Benoit Hoeft

Donald Barredo

Philippe Colin

Jean-Claude Dozzi

Sebastien Jeannot

Rémy Ruppel

Veronique Wiss

Véronique Wiss

Julien Marietta-Tondin

Pierre Laurent

Nicolas Pommier

Benoît Hoeft

Nicolas Weisang

Pascale Saas

Herve Walgenwitz

Gregory M Fike

Gérald Duhen

Frédéric Roesch

Sébastien Jeannot

Bruno Bret

Anne-Gaëlle Clermont

Frederic Roesch

Stéphanie Annaheim

Hervé Walgenwitz

A fibrous sheet having a basis weight of between 20 and 1000 g/mthat disintegrates in water, has 10% to 70% starch on the basis of the total weight of the dry fibrous sheet. The disintegration time in water, measured in accordance with standard NF Q34-020 applied to a specimen of the sheet of 9&#xd7;8 cm, is less than 50 seconds. A loss of strength of the sheet measured in accordance with a defined table test corresponds to a loss of strength of a specimen of said sheet forming an angle of at least 85&#xb0; after having being wetted with water for a duration of 6 seconds, and/or a residual wet strength of the sheet relative to its dry strength, as measured according to a defined ring crush test, is less than 1%. The fibrous sheet may be used for the manufacture of a water disintegrable core in a roll of tissue paper.

Fibrous sheet that disintegrates in water, process for manufacturing said fibrous sheet, core consisting of strips of said fibrous sheet

A core intended to support a reel of paper, particularly toilet paper, is formed by winding at least one web of cellulose wadding. The core is formed by winding at least one web of cellulose wadding having at least 0.51 g of water-soluble material per gram of cellulose wadding, the water-soluble material being designed to make the web of cellulose wadding more rigid and easier to disintegrate. Thus configured, the core that has both mechanical strength fit for the intended purpose and is far easier to disintegrate than a core mad of cardboard such that it can be disposed of directly in a toilet bowl without the risk of blocking the waste pipe.

Core forming support of a paper reel

A roll of wiping paper is obtained by winding a sheet of multi-ply absorbent paper around a core. The sheet includes at least a first and a second ply of absorbent paper, each with a grammage of between 15 and 30 g/mand at least one of the plies incorporating a wet strength additive. The thickness of the sheet Ep being between 0.02 and 0.07 cm, the diameter of the core being less than 3.5 cm, the diameter of the roll being between 4.5 cm and 11 cm for a volume V of absorbent paper per unit length of the roll, and the absorbency A of the sheet in cmof water per gram of paper being greater than 6 cm/g. The ratio E=A/(Ep*V) of the roll is greater than or equal to 3.2.

Method of making a compact roll of absorbent paper

An absorbent composite sheet for domestic use includes a first ply of paper, with a degree of absorption of liquids equal to or greater than around 5 (g/g CEN standard), and a second superposed ply composed of a metal-containing layer, the thickness of the second ply being equal to or less than around 10 microns (&#x3bc;m).

Absorbent composite sheet, roll of such a sheet, packet of sheets, and manufacturing process

A process for manufacturing multi-ply disintegratable absorbent sheets is provided. Each said sheet includes at least five plies including two exterior plies and at least three interior plies. Each of at least three of the plies in the sheet is in at least one group of plies and each of the at least three plies is joined to another ply by mechanical deformation.

Multi-ply disintegratable absorbent sheet, associated roll and associated manufacturing process

A fibrous sheet having a basis weight of between 20 and 1000 g/mbeing manufactured according to a wet papermaking process, and disintegrating in water in less than 120 seconds, has 10 to 70% starch and at least 30% of papermaking fibers on the basis of the total weight of the dry fibrous sheet. The sheet may be used for the manufacture of a water disintegrable core in a roll of tissue paper.

Fibrous sheet disintegrating in water, process for manufacturing said fibrous sheet, use of said fibrous sheet for the manufacture of a core

A core intended to be used as a support for a roll of paper, especially toilet paper, is formed by winding at least one strip made of tissue, the strip being impregnated, at least locally, with starch so as to improve its stiffness. Thus configured, a core is provided having both a mechanical strength suitable for the envisaged use and a greatly improved ability to disintegrate relative to a cardboard core so as to allow it to be able to be disposed of directly in a toilet bowl without risk of blocking the soil pipe.

Core intended to be used as a support for a roll of paper

Compact roll of absorbent paper

A substantially rectangular multi-ply disintegratable absorbent sheet based on tissue includes at least three plies and has certain characteristics of strength in the cross direction of the sheet, strength in the machine direction of the sheet, a basis weight of the sheet, a thickness of the sheet, a flexibility of the sheet, an absorption of the sheet and a mean thickness of one ply of the sheet.

A water degradable paper sheet has a basis weight of 80 to 400 g/mand is dry-formed from paper fibers bound together by a water-soluble binder including starch, the amount of binder in the sheet being 30 to 70%. Additionally, a tube is formed by a cylinder having a wall that includes at least one dry-formed paper sheet including paper fibers bound together by a water-soluble binder.

Water-degradable paper sheet, and tube for a paper roll consisting of such a sheet

A core intended to support a reel of paper, particularly toilet paper, is formed by winding at least one web of cellulose wadding. The core is formed by winding at least one web of cellulose wadding having at least 0.51 g of water-soluble material per gram of cellulose wadding, the water-soluble material being designed to make the web of cellulose wadding more rigid and easier to disintegrate. Thus configured, the core that has both mechanical strength fit for the intended purpose and is far easier to disintegrate than a core made of cardboard such that it can be disposed of directly in a toilet bowl without the risk of blocking the waste pipe.

A fibrous sheet having a basis weight of between 20 and 1000 g/m2 being manufactured according to a wet papermaking process, and disintegrating in water in less than 120 seconds, has 10 to 70% starch and at least 30% of papermaking fibres on the basis of the total weight of the dry fibrous sheet. The sheet may be used for the manufacture of a water disintegrable core in a roll of tissue paper.

A fibrous sheet having a basis weight of between 20 and 1000 g/m2 that disintegrates in water, has 10% to 70% starch on the basis of the total weight of the dry fibrous sheet. The disintegration time in water, measured in accordance with standard NF Q34-020 applied to a specimen of the sheet of 9&#xd7;8 cm, is less than 50 seconds. A loss of strength of the sheet measured in accordance with a defined table test corresponds to a loss of strength of a specimen of said sheet forming an angle of at least 85&#xb0; after having being wetted with water for a duration of 6 seconds, and/or a residual wet strength of the sheet relative to its dry strength, as measured according to a defined ring crush test, is less than 1%. The fibrous sheet may be used for the manufacture of a water disintegrable core in a roll of tissue paper.

Growing community of inventors

Ammerschwihr, France

Pierre Probst