Apparatus and method for ply bonding as well as multi-ply product

US8678806B2 · kind B2 · utility

Assignee

• SCA HYGIENE PRODUCTS AB · SE

Inventors

• Jurgen Sauter · Mannheim, DE
• Harald Harlacher · Mannheim, DE
• Joachim Leonhardt · Mannheim, DE
• Thomas Heilemann · Bischofswerda, DE

Key dates

• Filing date: Aug 7, 2008
• Grant date: Mar 25, 2014
• Expiry date: Sep 25, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/24826
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

Apparatus for bonding at least two plies of a fibrous web, includes: a first roller having an outer periphery, at least one embossing protuberance provided on the outer periphery; and a second roller having an outer periphery and being elastic at least in a radial direction, the second roller including at least an inner layer and an outer layer that is harder than the inner layer, the second roller together with the first roller forming a nip through which the two plies are to be fed, wherein an embossing element is located on top of at least one of the embossing protuberance(s), an embossing area of each embossing element being smaller than an embossing area of the corresponding embossing protuberance(s) so that the two plies are bonded at discrete locations corresponding to the first and second embossing elements. Multi-ply product including the bonded plies and corresponding method are also described.