EP1386723B1 - Coussinet pour presse - Google Patents

Coussinet pour presse Download PDF

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Publication number
EP1386723B1
EP1386723B1 EP20030014914 EP03014914A EP1386723B1 EP 1386723 B1 EP1386723 B1 EP 1386723B1 EP 20030014914 EP20030014914 EP 20030014914 EP 03014914 A EP03014914 A EP 03014914A EP 1386723 B1 EP1386723 B1 EP 1386723B1
Authority
EP
European Patent Office
Prior art keywords
thread
press pad
press
filament
types
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP20030014914
Other languages
German (de)
English (en)
Other versions
EP1386723A2 (fr
EP1386723A3 (fr
Inventor
Rolf Dipl.-Ing. Espe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rheinische Filztuchfabrik GmbH
Original Assignee
Rheinische Filztuchfabrik GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rheinische Filztuchfabrik GmbH filed Critical Rheinische Filztuchfabrik GmbH
Publication of EP1386723A2 publication Critical patent/EP1386723A2/fr
Publication of EP1386723A3 publication Critical patent/EP1386723A3/fr
Application granted granted Critical
Publication of EP1386723B1 publication Critical patent/EP1386723B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/06—Platens or press rams
    • B30B15/061—Cushion plates
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/30—Woven fabric [i.e., woven strand or strip material]
    • Y10T442/3179—Woven fabric is characterized by a particular or differential weave other than fabric in which the strand denier or warp/weft pick count is specified
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/30—Woven fabric [i.e., woven strand or strip material]
    • Y10T442/3179—Woven fabric is characterized by a particular or differential weave other than fabric in which the strand denier or warp/weft pick count is specified
    • Y10T442/322—Warp differs from weft

Definitions

  • the invention relates to a press pad with a fabric, the warp and / or weft each having alternating yarn types with transverse to the thread axis of different elasticity.
  • Press pads are used in hydraulic heating presses, single or multi-day, high-pressure or other presses, for example for plastic coating or lamination of wood-based panels or in the production of printed circuit boards.
  • the press pads lie during pressing on both sides between the pressure plates resting on the press plates and the press plates. Due to their properties, they should ensure a uniform uniform transfer of the pressing pressure with comparatively large tolerances of both the components of the presses and of the pressed material. Convex or concave distortion of the press plates due to different heat radiation or incorrect grinding of the pressed material can thus be compensated.
  • the press pads must on the one hand resist as little resistance as possible to their deformation, but on the other hand have the greatest possible elastic resilience in the case of an intermittent pressure load.
  • press cushions must be suitable for use at temperatures above 200 ° C. and in turn enable a uniformly uniform surface and, especially when used in short-cycle presses, a rapid transfer of heat.
  • Press pads are typically made of a fabric, which may still have a one-sided or two-sided coating depending on the purpose. Such fabrics are known in the art in a variety of designs using both metal and polymeric yarns in the thread systems, preferably with warp and weft in linen or twill weave, as well as in other weave and weave styles.
  • Generic press pads have in the fabric in at least one thread system two different types of yarn with different elasticity transverse to the thread axis.
  • both the compressibility transverse to the thread axis and the bending stiffness of a thread are termed this term. Both properties characterize each of the elasticity of a press pad, which is also used accordingly as a generic term for its compressibility and flexural rigidity.
  • Such press pads are, for example, from the brochure "press pad for short cycle presses" of Rheinische Filztuchfabrik GmbH, Stolberg / Germany under the trade name SI-NAS ® UNIVERSAL known.
  • the fabrics of these press pads have a chain of an aramid multifilament twisted with copper filaments, while the weft alternately consists of stranded copper filaments and an elastomer-coated textile multifilament.
  • the combination of different threads in a thread system - here: in the weft - allows in a particularly simple way, the combination of properties of different threads and the tuning of these properties for certain applications by varying the proportions of one or the other thread type.
  • These generic press pads are characterized by an excellent cushioning effect and high temperature resistance in conjunction with very good heat transfer, which can be even increased by increasing the proportion of copper threads and are used especially for the production of laminated floor panels in modern short-cycle floor presses.
  • the DE-A-26 50 642 discloses a press pad which can alternately have aramid yarn and rubber yarn both in the warp and weft. This should be combined in the press pad, the heat-permeability of the aramid yarn and the elastic properties of the rubber yarn.
  • the aramid threads take on the strength function whereas the rubber thread is used for improved cushioning properties.
  • the press pad in the US-A-6040253 discloses a press pad according to the preamble of claim 1, which should be characterized by improved press and heat conduction properties.
  • the press pad consists of a thread system of two threads, wherein the first thread of a group of threads with a metallic portion and the second thread of a group of threads with an elastic portion can be assigned.
  • EP 1 167 007 A1 a press pad made of a fabric with longitudinal and transverse threads, of which every second longitudinal thread is replaced by a heating wire to provide an active heating possibility of the press pad.
  • the fabric is embedded with the heating wires in a so-called matrix of temperature-resistant elastomer.
  • the invention has for its object to propose a press pad, with the compensation of different pressing pressures compared to the known press pads is improved.
  • the return property of a press pad or the upholstery property results from the type of fabric construction or from the padding material used.
  • the elasticity of the elastomers is determined by their Shore hardness, their density and their compression set (22 h at 175 ° C).
  • the elastomeric material used in the threads is preferably a silicone or fluorosilicone elastomer, a blend of the aforementioned or another high temperature resistant elastomeric material.
  • the Shore hardness of the elastomer can be adjusted to the desired value in a manner known to the person skilled in the art, for example by fillers such as quartz flour or metal oxides.
  • the deformability can be adjusted individually and longitudinally across the thread.
  • the core of at least one of the threads preferably consists essentially of metal, on the one hand to ensure the heat conduction through the press pad, on the other hand its good wearability and dimensional stability.
  • This is preferably copper, depending on the application but also brass or stainless steel used.
  • threads may preferably be used in the same or in another thread system, the core of which consists essentially of polyamide.
  • the in the WO 96/13376 Proposed use of a pure elastomer thread is hardly useful in terms of weaving technology, since loops and warping can arise from distortion of individual fibers in their longitudinal direction from the press pad. Only with a soul higher tensile strength on the one hand, the workability, on the other hand, the dimensional stability during operation guaranteed.
  • the use of the thinnest possible polyamide core hardly influences the Shore hardness and thus the transverse elasticity of the elastomer thread that is essential during operation in comparison to a metallic core.
  • aromatic polyamide fibers are used, as sold for example by DuPont Inc. under the trade names KEVLAR ® and NOMEX ® .
  • any other high temperature resistant fiber having sufficient tensile strength such as that sold under the tradename Basofil ® melamine resin fiber of the Fa. BASF may be used.
  • a preferred embodiment comprises threads with a core of stranded or stranded fibers. At high tensile strength of such threads - especially when using non-metallic materials - can still be achieved in this way a high transverse elasticity of the press pad according to the invention.
  • threads comprise a monofilament core.
  • an inventive with warp and weft woven press pad whose shot has alternately a thread of different types of yarn.
  • two threads of the one may each be made of a thread of a second type or almost any other numerical combinations.
  • FIG. 1 shows a section of a section transverse to the weft direction through the fabric of a press pad according to the invention wherein the warp threads are not shown.
  • the fabric of the press pad according to the invention has a brass strand of 7 individual wires, each with a diameter of 0.2 mm as a chain.
  • the press pad and its fabric as such, as well as the chain are not shown.
  • the tissue alternately has a first thread 2 and a second thread 3.
  • the first thread 2 has a first core 4, which is stranded from symbolically indicated 8 copper wires, each with a diameter of 0.2 mm.
  • the first core 4 is enclosed by a first jacket 5 with a diameter of 1.5 mm made of a blend elastomer of 15% fluorine silicone and 85% pure silicone rubber.
  • the first jacket 5 has a Shore hardness of 70-75 and a total density of 2.15 g / cm 3 and is thus harder than the second jacket 7 with a Shore hardness of 70-75 and a total density of 1.38 g / cm 3 .
  • This press pad according to the invention shows over its surface a hydraulic padding effect, which responds to different pressing pressures and compensates accordingly.
  • a very good cushioning effect in particular a very homogeneous pressure distribution over the press pad surface is achieved.
  • An 8 mm thick HDF board which is coated with an abrasion-resistant melamine resin overlay and a melamine resin decor film, shows a perfectly transparent and closed surface after removal from the press. Under the same conditions, a faulty, not uniformly closed surface with strong graying is achieved with a known prior art press pad.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Woven Fabrics (AREA)
  • Liquid Crystal (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)
  • Bipolar Transistors (AREA)

Claims (5)

  1. Coussin de presse avec un tissu dont la chaîne et/ou la trame (1) présentent des types de fils alternés ayant une élasticité différente dans le sens transversal par rapport à l'axe du fil, caractérisé en ce que la chaîne et/ou la trame contiennent chacune au moins deux types de fils ayant une élasticité différente, lesquels types de fil présentent chacun une enveloppe faite d'un matériau élastomère résistant à haute température et une âme ayant une plus grande résistance à la traction que celle-ci.
  2. Coussin de presse selon la revendication précédente, caractérisé en ce que l'âme se compose pour l'essentiel de métal.
  3. Coussin de presse selon la revendication 1 ou 2, caractérisé en ce que l'âme se compose pour l'essentiel de polyamide.
  4. Coussin de presse selon l'une des revendications 1 à 3, caractérisé en ce que l'âme est pour l'essentiel toronnée ou torsadée à partir de fibres.
  5. Coussin de presse selon l'une des revendications précédentes, caractérisé en ce que la trame présente alternativement un premier nombre de fils (2) d'un premier type et un deuxième nombre de fils d'un deuxième type.
EP20030014914 2002-07-31 2003-07-01 Coussinet pour presse Expired - Lifetime EP1386723B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10235065 2002-07-31
DE10235065 2002-07-31

Publications (3)

Publication Number Publication Date
EP1386723A2 EP1386723A2 (fr) 2004-02-04
EP1386723A3 EP1386723A3 (fr) 2004-06-02
EP1386723B1 true EP1386723B1 (fr) 2008-07-30

Family

ID=30010542

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20030014914 Expired - Lifetime EP1386723B1 (fr) 2002-07-31 2003-07-01 Coussinet pour presse

Country Status (5)

Country Link
US (1) US20040023582A1 (fr)
EP (1) EP1386723B1 (fr)
AT (1) ATE402809T1 (fr)
DE (1) DE50310226D1 (fr)
ES (1) ES2311079T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202021003665U1 (de) 2021-12-02 2022-12-07 Hueck Rheinische Gmbh Druckausgleichskörper, insbesondere Presspolster zur Ausrüstung von hydraulischen Ein- und Mehretagenheiz- und Kühlpressen
DE202022002690U1 (de) 2022-12-30 2024-01-04 Hueck Rheinische Gmbh Presspolster universal einsetzbar und Fixierung desselben in hydraulischen Mehretagenpressen mit Aufheizung und Rückkühlung

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1937226A2 (fr) * 2005-09-23 2008-07-02 Alza Corporation Systeme d'administration transdermique de galantamine
DE202005016935U1 (de) * 2005-10-28 2006-01-26 Espe, Rolf Druckausgleichsgewebe für hydraulische Heizpressenanlagen
EP1974896A1 (fr) * 2007-03-26 2008-10-01 Heimbach GmbH & Co. KG Coussinet pour presse doté d'un renfort aux extrémités
DE202007006849U1 (de) 2007-05-10 2008-06-26 Heimbach Gmbh & Co. Kg Presspolster mit Randverstärkung
US10590569B2 (en) 2007-12-28 2020-03-17 Albany International Corp. Ultra-resilient fabric
ATE530685T1 (de) * 2007-12-28 2011-11-15 Albany Int Corp Ultraelastischer polsterkörper
AU2008345016A1 (en) 2007-12-28 2009-07-09 Albany International Corp. Ultra-resilient fabric
US10590571B2 (en) 2007-12-28 2020-03-17 Albany International Corp. Ultra-resilient pad
DE102010036539B4 (de) 2010-07-21 2013-04-11 Hueck Rheinische Gmbh Presspolster für eine hydraulische Presse
US8535484B2 (en) 2011-01-21 2013-09-17 Albany International Corp. Ultra-resilient fabric and method of making thereof
DE102019107005A1 (de) * 2019-03-19 2020-09-24 Hueck Rheinische Gmbh Presspolster für den Einsatz in Ein- oder Mehretagenheizpressen

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1167007A1 (fr) * 2000-06-21 2002-01-02 Thomas Josef Heimbach Gesellschaft mit beschränkter Haftung Coussinet pour presse et presse à plaques chauffantes avec un tel coussinet

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3851681A (en) * 1973-04-18 1974-12-03 Albany Int Corp Woven papermaking drainage fabric having four shed weave pattern and weft threads of alternating diameter
DE2650642A1 (de) * 1976-11-05 1978-05-18 Ver Seidenwebereien Ag Luft- und hitzedurchlaessige druckausgleichsmatte
US4423755A (en) * 1982-01-22 1984-01-03 Huyck Corporation Papermakers' fabric
US4909284A (en) * 1988-09-23 1990-03-20 Albany International Corp. Double layered papermaker's fabric
EP0493630B1 (fr) * 1990-12-31 1995-05-24 RHEINISCHE FILZTUCHFABRIK GmbH Coussinet de pressage pour presses à hautes pressions
GB9421573D0 (en) * 1994-10-26 1994-12-14 Marathon Belting Ltd A press pad
DE9418984U1 (de) * 1994-11-25 1995-01-26 Rheinische Filztuchfabrik GmbH, 52222 Stolberg Preßpolster für Hoch- und Niederdruckpressen
DE29618864U1 (de) * 1996-10-30 1997-01-02 Rheinische Filztuchfabrik GmbH, 52222 Stolberg Preßpolster aus asbestfreiem Material
DE29721495U1 (de) * 1997-12-05 1998-02-19 Thomas Josef Heimbach GmbH & Co., 52353 Düren Preßpolster
ATE210553T1 (de) * 1999-03-03 2001-12-15 Heimbach Gmbh Thomas Josef Presspolster
EP1040909B1 (fr) * 1999-03-03 2001-08-08 Thomas Josef Heimbach Gesellschaft mit beschränkter Haftung & Co. Coussinet pour presse
US6737370B2 (en) * 2000-03-21 2004-05-18 Rheinische Filztuchfabrik Gmbh Press pad containing fluoroelastomer or fluorosilicone elastomer priority claim

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1167007A1 (fr) * 2000-06-21 2002-01-02 Thomas Josef Heimbach Gesellschaft mit beschränkter Haftung Coussinet pour presse et presse à plaques chauffantes avec un tel coussinet

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202021003665U1 (de) 2021-12-02 2022-12-07 Hueck Rheinische Gmbh Druckausgleichskörper, insbesondere Presspolster zur Ausrüstung von hydraulischen Ein- und Mehretagenheiz- und Kühlpressen
WO2023099288A1 (fr) 2021-12-02 2023-06-08 Hueck Rheinische Gmbh Corps d'égalisation de pression, en particulier coussin de pression, pour équiper des presses hydrauliques de chauffage et de refroidissement à plateau unique et à plateaux multiples
DE202022002690U1 (de) 2022-12-30 2024-01-04 Hueck Rheinische Gmbh Presspolster universal einsetzbar und Fixierung desselben in hydraulischen Mehretagenpressen mit Aufheizung und Rückkühlung

Also Published As

Publication number Publication date
EP1386723A2 (fr) 2004-02-04
ES2311079T3 (es) 2009-02-01
US20040023582A1 (en) 2004-02-05
EP1386723A3 (fr) 2004-06-02
ATE402809T1 (de) 2008-08-15
DE50310226D1 (de) 2008-09-11

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