Support body and paper machine comprising such a support body

Patent metadata

Field	Value
Publication number	US-12540434-B2
Application number	US-202118253450-A
Country	US
Kind code	B2
Filing date	Nov 17, 2021
Priority date	Dec 7, 2020
Publication date	Feb 3, 2026
Grant date	Feb 3, 2026

Abstract

The present invention relates to a support body ( 50 ) for a paper machine having an extended nip formed between the support body and a counter-pressure member, wherein the support body comprises—a base body ( 51 ) comprising an upper surface facing in the first direction, —a cover body ( 52 ) comprising a working surface ( 15 ) for forming an extended nip with a counter-pressure member, wherein the cover body ( 52 ) is mounted on the upper surface of the base body ( 51 ) such that the working surface faces in the first direction, and wherein the cover body ( 52 ) comprises a first material, said first material being a polymer. The invention also relates to a paper machine comprising a support body ( 50 ).

First claim

The invention claimed is:

1 . A support body ( 50 ) for a paper machine having an extended nip formed between the support body and a counter-pressure member, wherein the support body ( 50 ) comprises:
a base body ( 51 ) comprising an upper surface facing in a first direction (D), and a cover body ( 52 ) comprising a working surface ( 15 ) for forming an extended nip with a counter-pressure member, wherein:
the cover body ( 52 ) is mounted on the upper surface of the base body ( 51 ) such that the working surface ( 15 ) faces in the first direction (D),
the cover body ( 52 ) comprises a first material, said first material being a polymer, and
the cover body ( 52 ) comprises an entry surface ( 28 ) that extends upstream of the working surface ( 15 ) and to at least a leading edge of the base body ( 51 ).

2 . The support body of claim 1 , wherein the first material has a shore D hardness of 60 or less.

3 . The support body of claim 1 , wherein the first material has a shore A hardness of 50-100.

4 . The support body of claim 1 , wherein the first material has a shore A hardness of 80-100.

5 . The support body of claim 1 , wherein the first material has a shore A hardness of 90-95.

6 . The support body of claim 1 , wherein the first material is polyurethane.

7 . The support body of claim 1 , wherein the first material is an elastomer.

8 . The support body of claim 7 , wherein the elastomer is rubber.

9 . The support body of claim 1 , wherein the base body ( 51 ) comprises a metal.

10 . The support body of claim 9 , wherein the metal is steel or aluminum.

11 . The support body of claim 1 , wherein the base body ( 51 ) comprises a polymer that is harder than the first material.

12 . The support body of claim 11 , wherein the base body ( 51 ) comprises a reinforced polymer.

13 . The support body of claim 12 , wherein the reinforced polymer is a carbon fiber reinforced polymer or a glass fiber reinforced polymer.

14 . The support body of claim 1 , wherein the cover body ( 52 ) comprises an upper body portion that comprises the working surface and the cover body also comprises a lower body portion, said upper body portion being fixed to the lower body portion.

15 . The support body of claim 14 , wherein said lower body portion comprises at least one of a polymeric material, a metallic material, or a reinforced polymer.

16 . The support body of claim 1 , wherein the cover body ( 52 ) is fixedly attached to the base body ( 51 ) by an adhesive arranged between the cover body ( 52 ) and the base body ( 51 ).

17 . The support body of claim 1 , wherein the cover body ( 52 ) is fixedly attached to the base body ( 51 ) by molding.

18 . The support body of claim 1 , further comprising a holder ( 53 ) configured to be attached to the base body ( 52 ) and to the cover body ( 52 ) for mounting the cover body ( 52 ) on the base body ( 51 ).

19 . The support body of claim 1 , wherein further the base body ( 51 ) is connectable to a displacement device for displacing the support body in the first direction.

Assignees

• Valmet Oy

Inventors

• Leandersson Anders
• Berg Jonas
• Brattström Anders
• Järkeborn Peter
• Nordin Adam

Classifications

• D21F3/0209 Primary

  with extended press nip · CPC title

• D21F3/04 Primary

  Arrangements thereof · CPC title

• D21G1/006

  with extended nips · CPC title

• D21F3/0218 Primary

  Shoe presses · CPC title