Clothing and method for the production thereof

Patent metadata

Field	Value
Publication number	US-2016153140-A1
Application number	US-201414900219-A
Country	US
Kind code	A1
Filing date	May 12, 2014
Priority date	Jun 21, 2013
Publication date	Jun 2, 2016
Grant date	—

Abstract

A clothing, in particular for use in a press section of a machine for manufacturing a fibrous web, such as a paper, cardboard, or tissue web, includes a base structure and at least one staple-fiber layer which is disposed on the base structure and is connected thereto. The clothing is assembled from a plurality of strips which are provided in the form of planar formations having a proportion of the base structure and a proportion of the at least one staple-fiber layer. Two mutually opposite edges of the strips have seam loops which are each connected to seam loops of the edges of adjacent strips. The edges having the seam loops are oriented in a cross-machine direction of the clothing. A method for manufacturing a clothing is also provided.

First claim

1 - 17 . (canceled)

18 . A method for manufacturing a clothing usable in a press section of a machine for manufacturing a fibrous web, paper web, cardboard web or tissue web, the method comprising the following steps:
i) manufacturing a base structure of any width; ii) converting the base structure to goods in roll form; iii) applying at least one staple-fiber layer and needling the at least one staple-fiber layer to the base structure; iv) tailoring the goods in roll form to form strips; v) rotating the strips by 90°; and vi) connecting the strips into a clothing.

19 . The method according to claim 18 , wherein step i) additionally includes a subsequent heat-setting step.

20 . The method according to claim 18 , wherein step ii) includes the following partial-steps:
a) closing lateral seam loops of the base structure by fastening one additional woven-fabric strip to each respective lateral seam loop; and b) rolling up the base structure provided with the additional woven-fabric strip.

21 . The method according to claim 18 , wherein step ii) additionally includes a subsequent heat-setting step.

22 . The method according to claim 18 , wherein step iii) includes the following partial-steps:
a) applying one or a plurality of layers of staple fibers having various fiber diameters and mass per unit area onto the goods in roll form in one or more steps; b) fixing the staple-fiber layer to the base structure by needling; and c) optionally repeating step b).

23 . The method according to claim 22 , which further comprises providing a needling density of approximately 500 to 1500 stitches per cm 2 .

24 . The method according to claim 18 , wherein step iii) additionally includes incorporating one or a plurality of functional layers.

25 . The method according to claim 18 , wherein step iii) additionally includes a subsequent heat-setting step.

26 . The method according to claim 20 , wherein step iv) includes the following partial-steps:
a) cutting the goods in roll form so as to correspond to a desired width of the clothing; b) slitting the staple-fiber layers for manufacturing seam flaps on edges; c) opening seams between the base structure and the additional woven-fabric strips by removing a pintle; and d) separating the strips from one another.

27 . The method according to claim 18 , wherein step v) additionally includes a subsequent heat-setting step.

28 . The method according to claim 18 , which further comprises incorporating thermoplastic material or an adhesive to create an adhesive connection in a seam zone.

29 . The method according to claim 18 , which further comprises incorporating a bicomponent epoxy or acrylic resin to create an adhesive connection in a seam zone.

30 . A clothing usable in a press section of a machine for manufacturing a fibrous web, paper web, cardboard web or tissue web, the clothing comprising:
a base structure having any width; and at least one staple-fiber layer disposed on said base structure and connected to said base structure by needling; said at least one staple-fiber layer and said connected base structure being formed of interconnected strips.

31 . The clothing according to claim 30 , wherein said at least one staple-fiber layer is a plurality of staple-fiber layers having at least one of different mass per unit area or different fiber thicknesses.

32 . The clothing according to claim 30 , wherein said base structure is selected from the group consisting of:
a flat-woven structure having edges and woven seam loops on said edges; a flat-woven structure having edges, being unified to form an endless tape and being placed flat to configure seam loops on said edges; a circular-woven structure having edges and being placed flat to configure seam loops on said edges; a helically-wound structure having ends, being produced by helically winding narrow tapes in an overlapping or butt-jointed manner and being placed flat to configure seam loops at said ends; a helically-formed cross-laid yarn structure having a fibrous non-woven being placed flat to form seam loops; and a helical structure of plastic helices being deposited to be mutually engaged and connected by pintles to form a planar formation with edge-bound helices forming seam loops.

33 . The clothing according to claim 30 , which further comprises one or a plurality of functional layers disposed at least one of:
on said base structure or on said at least one staple-fiber layer or between staple-fiber layers or as a cover layer on a topmost staple-fiber layer.

34 . The clothing according to claim 33 , wherein said one or said plurality of functional layers being selected from the group consisting of films, foils, woven fabrics, cross-laid structures, knitted fabrics, warp-knitted fabrics and non-wovens.

35 . The clothing according to claim 30 , wherein:
said strips have two mutually opposite edges and seam loops on said two mutually opposite edges; said seam loops are each connected to a seam loop on an edge of a respective adjacent strip; and said edges having said seam loops are oriented in a cross-machine direction of the clothing.

Assignees

• Voith Patent Gmbh

Inventors

• Koeckritz Uwe
• Walkenhaus Hubert
• Einarsson Johan
• Malmquist Johan

Classifications

• D21F7/083 Primary

  Multi-layer felts · CPC title

• D21F7/10

  Seams thereof · CPC title

• D04H1/5405

  at spaced points or locations · CPC title

• D04H1/46

  by needling or like operations to cause entanglement of fibres (D04H1/45 takes precedence; needling machines D04H18/00) · CPC title

• D21F1/0081

  with single endless strands travelling in generally parallel convolutions · CPC title