Paper machine clothing and a method of producing the same
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
D21F-007/08
D21F-007/12
D03D-003/12
출원번호
US-0423024
(2003-04-25)
우선권정보
EP-0009511 (2002-04-25)
발명자
/ 주소
Best, Walter
출원인 / 주소
Heimbach GmbH &
Co.
대리인 / 주소
Liniak, Berenato &
인용정보
피인용 횟수 :
2인용 특허 :
11
초록▼
This invention relates to porous paper machine clothing (1, 11) for dewatering a paper web in a paper machine, comprising a filament lay-up made of at least one layer (2, 12) of longitudinal filaments (3, 13) and at least one layer (4, 14) of transverse filaments (5, 6, 7; 15) which cross the longit
This invention relates to porous paper machine clothing (1, 11) for dewatering a paper web in a paper machine, comprising a filament lay-up made of at least one layer (2, 12) of longitudinal filaments (3, 13) and at least one layer (4, 14) of transverse filaments (5, 6, 7; 15) which cross the longitudinal filaments (3, 13), wherein the longitudinal and transverse filaments (3, 13; 5, 6, 7; 15) are adhesively bonded to each other via an adhesive at crossing points (8, 16). The invention further relates to a method of producing porous paper machine clothing such as this.
대표청구항▼
1. Porous drying screen for a drying section of a paper machine, comprising a filament lay-up comprised of at least one layer (2, 12) of longitudinal filaments (3, 13) and at least one layer (4, 14) of transverse filaments (5, 6, 7; 15) which cross said longitudinal filaments (3, 13), wherein said l
1. Porous drying screen for a drying section of a paper machine, comprising a filament lay-up comprised of at least one layer (2, 12) of longitudinal filaments (3, 13) and at least one layer (4, 14) of transverse filaments (5, 6, 7; 15) which cross said longitudinal filaments (3, 13), wherein said longitudinal and transverse filaments (3, 13; 5, 6, 7; 15) are comprised of thermoplastic material and are adhesively bonded to each other by an adhesive at crossing points (8, 16) between said longitudinal and transverse filaments, characterised in that said longitudinal and transverse filaments are flat filaments and the adhesive is applied solely to mutually opposite faces of said longitudinal and transverse filaments (3, 13; 5, 6, 7; 15).2. Porous drying screen according to claim 1, characterised in that the adhesive (10, 20) is one of a hot-melt adhesive, a diffusion adhesive, a contact adhesive or a reaction adhesive.3. Porous drying screen according to claim 1, characterised in that said longitudinal and transverse filaments (3, 13; 5, 6, 7; 15) are additionally positively attached to each other at said crossing points (8, 16), said crossing points forming a joint.4. Porous drying screen according to claim 3, characterised in that each said joint comprises an aperture in one of said longitudinal or said transvers filaments and of a projection extending from one of said longitudinal or said transverse filaments, said projection fitting suitably within said aperture.5. Porous drying screen according to claim 3, characterised in that each said joint consists of mutually aligned apertures (18, 19) in said filaments (13, 15) and of a pin (17) which passes through said mutually aligned apertures.6. Porous drying screen according to any claim 1, characterised in that said longitudinal and transverse filaments (3, 13; 5, 6, 7; 15) are formed as flat filaments with a rectangular cross-section.7. Porous drying screen according to claim 6, characterised in that said longitudinal and transverse filaments (3, 13; 5, 6, 7; 15) have a width of 2 to 20 mm.8. Porous drying screen according to claim 1, characterised in that said longitudinal filaments (3, 13) have a width in said longitudinal filaments' middle region which differs from that in said longitudinal filaments' edge regions.9. Porous drying screen according to claim 6, characterised in that said longitudinal and transverse filaments (3, 13; 5, 6, 7; 15) have a height of 0.3 to 2 mm.10. Porous drying screen according to claim 6, characterised in that said transverse filaments (5, 6, 7; 15) have a maximum thickness which is the same as that of the longitudinal filaments (3).11. Porous drying screen according to claim 1, characterised in that said longitudinal and said transverse filaments comprises passageway openings.12. Porous drying screen according to claim 1, characterised in that at least three layers are present, wherein a layer comprising said longitudinal filaments and a layer comprising said transverse filaments are adjacent.13. Porous drying screen according to claim 12, characterised in that each said layer comprises said transverse filaments and is surrounded on both sides by a layer of said longitudinal filaments.14. Porous drying screen according to claim 1, characterised in that at least one layer comprising said longitudinal filaments has a filament density in its middle region which differs from that in said longitudinal filament's edge regions.15. Porous drying screen according to claim 1, characterised in that end pieces of said longitudinal filaments (3, 13) are wrapped round and fixed to end faces of said dryer screen with the formation of loops.16. Porous drying screen according to claim 15, characterised in that said end pieces are fixed to said transverse filaments (5, 6, 7; 15) on a side, which is remote from a layer (2, 12) comprising said longitudinal filaments (3, 13), of the layer (4, 14) comprising said transverse filaments (5, 6, 7; 15).17. Porous drying screen according to claim 15, characterised in that said end pieces are fixed to said longitudinal filaments (3, 13).18. Porous drying screen according to claim 15, characterised in that non-loop-forming end pieces of said longitudinal filaments (3, 13) are each fixed to a last of said transverse filaments (5, 6, 7; 15) on said end face of said porous dryer screen.19. Porous drying screen according to claim 15, characterised in that at least one said end piece is wrapped round with the formation of a loop, and at least one said end piece ends at an outer edge of the last said transverse filament (5, 6, 7; 15) on the end face of said porous dryer screen.20. Porous drying screen according to claim 15, characterised in that said longitudinal filaments of a second layer comprising said longitudinal filaments, which is seated against the layer comprising said transverse filaments, adjoin the ends of the end pieces.21. Porous drying screen according to claim 1, characterised in that said longitudinal and transverse filaments (3, 13; 5, 6, 7; 15) are comprised of PET, PA in all modifications, PPS, PEK, PEEK, an elastic polyester, PBT or PTT or a combination thereof.22. Porous drying screen according to claim 1, characterised in that said longitudinal and transverse filaments (3, 13; 5, 6, 7; 15) are fibre-reinforced.23. Porous drying screen according to claim 1, characterised in that a fibrous layer is provided on at least one side.24. A method of producing porous dryer screens for a dryer section of a paper machine wherein a filament lay-up is produced by arranging at least one layer (2, 12) of longitudinal filaments (3, 13) and at least one layer (4, 14) of transverse filaments (5, 6, 7; 15), which cross the longitudinal filaments (3, 13), one above the other, and wherein the longitudinal and transverse filaments are comprised of thermoplastic material and joined to each other by adhesive at crossing points (8, 16) between the longitudinal and transverse filaments, characterised in that flat filaments are used for the longitudinal and transverse filaments and that the adhesive is disposed exclusively between mutually opposite faces of the longitudinal and transverse filaments (3, 13; 5, 6, 7; 15) for joining the faces.25. A method according to claim 24, characterised in that the longitudinal and transverse filaments (3, 13; 5, 6, 7; 15) are additionally positively attached to each other at the crossing points (8, 16).26. A method according to claim 24, characterised in that the longitudinal filaments (3, 13) are clamped parallel to each other, and that the transverse filaments (5, 6, 7; 15) are then laid, individually or in groups, successively on the longitudinal filaments (3, 13) and are fixed to a first side of the longitudinal filaments (3, 13), and that the filament lay-up is conveyed in a longitudinal direction and is then rolled up.27. A method according to claim 26, characterised in that the transverse filaments (5, 6, 7; 15) are also fixed, one of simultaneously or later, to a second side of the longitudinal filaments (3, 13).28. A method according to claim 26, characterised in that temporary fixing is effected by application of additional weight.29. A method according to claim 24, characterised in that the layers (2, 12; 4, 14) are temporarily pressed on to each other at the crossing points (8, 16) for fixation.30. A method according to claim 24, characterised in that a fibrous layer is applied to one or both sides of the filament lay-up and is fixed thereto.
Denton Jeffrey Scott ; Eagles Dana Burton ; O'Connor Joseph Gerald ; Davis Robert Bernard, Paper machine clothings constructed of interconnected bicomponent fibers.
Ayers Peter G. (Middletown OH) Hensler Thomas A. (Cincinnati OH) Trokhan Paul D. (Hamilton OH), Papermaking belt having semicontinuous pattern and paper made thereon.
Davenport,Francis L.; Kramer,Charles E.; O'Connor,Joseph G.; Paquin,Maurice, Methods for bonding structural elements of paper machine and industrial fabrics to one another and fabrics produced thereby.
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