Coreless roll of absorbent sheet and method for manufacturing the same
AssigneeEssity Operations France
InventorsNicolas Weisang, Donald Barredo
Life of this patent
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Abstract
A coreless roll of an absorbent sheet product, such as napkins, toilet paper, towels etc., including a spirally wound continuous web of absorbent material having a first end and a second end and a coating composition comprising a specific polymer coated onto the second end is disclosed. The coreless roll has excellent resistance to collapsing, as well as excellent flexibility and elasticity. Moreover, the coreless roll has excellent disintegrability in water and can be used along its whole length. Also disclosed is a process for the manufacture of the coreless roll.
Claims19
A coreless roll of an absorbent sheet product, comprising:
- a spirally wound continuous web of absorbent material having a first end and a second end, the web of absorbent material being wound such as to define an axial hollow passageway centrally positioned relative to the coreless roll and extending from one edge to another edge of the coreless roll and such that the first end is located on the outer side of the roll and the second end is located at the axial hollow passageway;
- and
- a coating composition on the continuous web of absorbent material, the composition being free of saccharide and comprising a polymer having:
- (i) a glass transition temperature lower than 20° C.;
- and
- (ii) a melting point greater than 20° C.
A coreless roll of an absorbent sheet product, comprising:
- a spirally wound continuous web of absorbent material having a first end and a second end, the web of absorbent material being wound such as to define an axial hollow passageway centrally positioned relative to the coreless roll and extending from one edge to another edge of the coreless roll and such that the first end is located on the outer side of the roll and the second end is located at the axial hollow passageway;
- and
- a coating composition being free of saccharide and comprising a polymer, wherein the polymer conforms to the following formula:
- wherein, in the above formula, n represents an integer having an average value of 10 to 5000.
A manufacturing method for manufacturing a coreless roll of an absorbent sheet product, comprising:
- conveying a continuous web of absorbent material having a first end and a second end;
- applying a coating composition to the second end, wherein the coating composition is free of saccharide and comprises a polymer, wherein the polymer conforms to the following formula:
- wherein, in the above formula, n represents an integer having an average value of 10 to 5000;
- spirally winding the continuous web of absorbent material so as to produce a log of web of absorbent material, the web of absorbent material being wound such as to define an axial hollow passageway centrally positioned relative to the log and extending from one edge to another edge of the log and such that the first end is located on the outer side of the log and the second end is located at the axial hollow passageway;
- and
- cutting the log into multiple coreless rolls.
Dependencies are inferred from the claim text.