Sca Hygiene Products Gmbh

Sca Hygiene Products Ab

Sca Hygiene Products Gbmh

Hans-J&uuml;rgen Lamb

Holger Hollmark

Lennart Reiner

Hans Wallenius

The invention relates to a paper machine clothing in the form of a fabric with a web pattern which recurs regularly over the surface and has indentations ( ) that are formed by the thread overlays ( ), the latter having been surface ground. Said thread overlays cover three consecutive warp or weft threads crosswise thereto. A paper machine clothing of this type can be used especially in &ldquo;through air drying&rdquo; techniques to produce an especially voluminous tissue paper.

Paper making machine fabric as well as tissue paper produced thereby

The invention relates to a paper machine clothing in the form of a fabric with a web pattern which recurs regularly over the surface and has indentations ( ) that are formed by the thread overlays ( ), the latter having been surface ground. The thread overlays cover three consecutive warp or weft threads crosswise thereto. A paper machine clothing of this type can be used especially in &ldquo;through air drying&rdquo; techniques to produce an especially voluminous tissue paper.

Paper making machine fabric

The invention relates to a paper machine clothing, notably an air-dry clothing (TAD clothing), in the form of a woven having a weaving design. According to the invention the relative depth of machine clothing cups which are open towards the contact surface of the paper is 20% or more, said relative cup depth being the quotient of the difference between the measurement height for which the bearing percentage is 30% and the measurement for which the bearing percentage is 60%, on the one hand, and the sum of the diameters of a warp thread and a weft, on the other hand. The measurement height &ldquo;0&rdquo; is the outer limit of the paper machine clothing on the paper contact surface, the bearing percentage is the projected sectional area of the threads of the woven at a given measurement height in relation to the measurement surface, the section areas being parallel to the surface of the clothing. The invention also relates to a tissue paper product which is produced with such a clothing and is especially voluminous in direction Z.

Paper-making-machine fabric and tissue paper produced therewith

A process for producing paper having a three-dimensional structure of alternating raised and recessed portions including passing a wet paper web through a heated press nip so the paper web is simultaneously dried by means of impulse drying and given a three dimensional structure. The heated press nip includes a heated pressure roll with a three dimensional pattern of alternating raised and recessed portions in its surface and a compressible surface. The compressible surface can be a compressible press felt which supports the wet paper web prior to and through the heated press nip. The compressible press felt may be pressed against a resilient compressible surface in the heated press nip away from the heated cylinder. The wet paper web may be a papermaking pulp containing at least 10%, and preferably at least 30% or 50% by weight of a high-yield pulp such as TMP or CTMP.

Growing community of inventors

Mannheim, Germany

Hans-Jürgen Lamb

Growing community of inventors

Mannheim, Germany

Hans-J&uuml;rgen Lamb

Hans-Jürgen Lamb