Method and apparatus for making a creped tissue with improved tactile qualities while improving handling of the web
AssigneeMetso Paper Karlstad AB
InventorsIngvar Berndt Erik Klerelid, Johan Ulf Ragard
Life of this patent
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Abstract
A creped tissue paper is made by creping a tissue paper from a drying cylinder with a creping doctor, receiving the creped web on a carrying fabric, carrying the creped web on the carrying fabric through a compression nip that compresses the web to substantially reduce its thickness and improve softness of the web, and carrying the creped, compressed web on the carrying fabric or a subsequent fabric to a reel-up.
Claims58
A method for making a creped tissue paper of enhanced tactile quality and for facilitating handling and control of the tissue in a dry end of a tissue machine, comprising the steps of:
- drying a tissue paper web on a heated drying cylinder;
- creping the web from the drying cylinder using a creping doctor so as to form a creped tissue paper web;
- providing a carrying fabric spaced downstream of the creping doctor, the carrying fabric forming an endless loop about a plurality of guide rolls;
- supporting and carrying the web on a web support extending from proximate the creping doctor to the carrying fabric;
- and
- carrying the creped tissue paper web on the carrying fabric to a reel-up and winding the web from the carrying fabric onto a building paper roll in the reel-up.
A method for making a creped tissue paper of enhanced tactile quality and for facilitating handling and control of the tissue in a dry end of a tissue machine, comprising the steps of:
- drying a tissue paper web on a heated drying cylinder;
- creping the web from the drying cylinder using a creping doctor so as to form a creped tissue paper web;
- receiving the web from the creping doctor onto a first fabric arranged in a loop downstream of the drying cylinder;
- transporting the web on the first fabric through a compression nip in which the web is compressed so as to substantially reduce the caliper of the web;
- transferring the web from the first fabric onto a second fabric arranged in a loop;
- and
- carrying the web on the second fabric to a reel-up and winding the web from the second fabric onto a building paper roll in the reel-up.
An apparatus for making a creped tissue of enhanced tactile quality while facilitating handling and control of the web, comprising:
- a heated drying cylinder on which a tissue paper is dried;
- a creping doctor for creping the tissue paper from the drying cylinder so as to form a creped tissue paper;
- a carrying fabric spaced downstream of the creping doctor, the carrying fabric forming an endless loop about a plurality of guide rolls;
- a web support extending from proximate the creping doctor to the carrying fabric, the web support supporting and carrying the creped tissue paper thereon;
- and
- a reel-up for winding the creped tissue paper onto a building paper roll in the reel-up, the carrying fabric being urged against the building paper roll so as to wind the web thereon.
An apparatus for making a creped tissue of enhanced tactile quality while facilitating handling and control of the web, comprising:
- a heated drying cylinder on which a tissue paper is dried;
- a creping doctor for creping the tissue paper from the drying cylinder so as to form a creped tissue paper;
- a first fabric spaced downstream of the creping doctor for receiving the web, the first fabric arranged in an endless loop about a plurality of guide rolls;
- a compression nip through which the first fabric passes with the web carried thereon, the compression nip compressing the web so as to substantially reduce the caliper of the web;
- a second fabric arranged in an endless loop about a plurality of guide rolls, the second fabric being arranged to receive the web from the first fabric, the second fabric being operable at a higher speed than the first fabric for removing slack in the web created by the reduction in caliper;
- and
- a reel-up for winding the web onto a building paper roll in the reel-up, the second fabric being urged against the building paper roll so as to wind the web thereon.
A tissue paper made by a process comprising the steps of:
- drying a tissue paper web on a heated drying cylinder;
- creping the web from the drying cylinder using a creping doctor so as to form a creped tissue paper web;
- providing a carrying fabric spaced downstream of the creping doctor, the carrying fabric forming an endless loop about a plurality of guide rolls;
- supporting and carrying the creped tissue paper web on a web support extending from proximate the creping doctor to the carrying fabric;
- transporting the web on the carrying fabric and compressing the web while supported on the carrying fabric so as to substantially reduce the thickness and improve the surface softness of the web;
- and
- carrying the creped, compressed tissue paper web on the carrying fabric to a reel-up and winding the web from the carrying fabric onto a building paper roll in the reel-up.
Dependencies are inferred from the claim text.