EP1974896A1 - Coussinet pour presse doté d'un renfort aux extrémités - Google Patents

Coussinet pour presse doté d'un renfort aux extrémités Download PDF

Info

Publication number
EP1974896A1
EP1974896A1 EP07006196A EP07006196A EP1974896A1 EP 1974896 A1 EP1974896 A1 EP 1974896A1 EP 07006196 A EP07006196 A EP 07006196A EP 07006196 A EP07006196 A EP 07006196A EP 1974896 A1 EP1974896 A1 EP 1974896A1
Authority
EP
European Patent Office
Prior art keywords
press pad
edge regions
pad according
harder
press
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.)
Withdrawn
Application number
EP07006196A
Other languages
German (de)
English (en)
Inventor
Walter Halterbeck
Martin Hüser
Ralf Kaldenhoff
Werner Walther
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.)
Heimbach GmbH and Co KG
Original Assignee
Heimbach GmbH and Co KG
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 Heimbach GmbH and Co KG filed Critical Heimbach GmbH and Co KG
Priority to EP07006196A priority Critical patent/EP1974896A1/fr
Publication of EP1974896A1 publication Critical patent/EP1974896A1/fr
Withdrawn legal-status Critical Current

Links

Images

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

Definitions

  • the invention relates to a press pad for use in laminating presses, with a cushion layer of a rubber-elastic material.
  • layered materials for example chipboards provided with decorative laminates
  • laminating presses which can be designed as low-pressure or high-pressure day presses or short-cycle presses.
  • press pads are inserted between the pressed material to be pressed and the press plates of the press, which have the task to transfer the pressure of the press plates over the entire surface and evenly on the pressed material.
  • the press pads must be able to withstand high pressures and also the temperatures present in such press, and they must be able to transfer the heat emanating from the press plates quickly and without great losses to the pressed material, so have a high thermal conductivity in the thickness direction.
  • press pads which have a cushion layer made of a rubber-elastic material, such as a silicone elastomer.
  • the cushion layer is basically homogeneous, but may contain additives.
  • the cushion layer is combined with a textile support which is completely embedded in the cushion layer (cf. DE 23 19 593 B ) or protrudes with its thread crows over the two surfaces of the cushion layer (see. EP 1 300 235 A1 ), wherein the cushion layer forms a matrix.
  • the carrier is formed as a fabric. But there is also a felt in question (cf. DE 26 27 442 A1 ).
  • the carrier not only provides strength, but also forms kilometersleitmaschinen, especially when the carrier contains thermal conduction, such as metal filaments.
  • thermal conduction such as metal filaments.
  • the thermal conductivity of the padding layer itself can be increased.
  • edge thickenings can be produced by providing a higher number of threads and / or a larger thread thickness and / or several staggered fabric layers in the edge regions than in the middle part. Instead, however, several separate fabric strips can be placed or even the edges are turned over. However, this is associated with a considerable effort in the production. In addition, depending on the type of Randverdikkung disadvantages in use must be expected.
  • the invention has for its object to form a press pad with a cushion layer of a rubber-elastic material so that a pressure drop in the edge regions of at least two opposite edges of the press pad is avoided with comparatively simple means.
  • the basic idea of the invention is therefore to avoid a pressure drop in the edge region of the press pad during the pressing by way of a variation of the hardness of the cushion layer, that is to say of the compression resistance. Due to the higher hardness arises in the edge areas provided with it a higher pressure, which counteracts the tendency to evasion in the edge region of the material to be pressed and thus ensures a uniform pressure up to the edge regions of the material to be pressed.
  • the adjustment of the hardness of the cushion layer is much easier than the provision of edge thickening means of the prior art measures described.
  • the achievement of a higher hardness can basically be effected by two measures, which can also be combined with each other.
  • the hardness of the rubber-elastic material itself is adjusted by the fact that in the harder edge regions, a material with a higher Shore hardness, for example, with a higher degree of crosslinking, is used as adjacent to these edge regions.
  • the cushion layer in the harder edge regions may also be provided with additives increasing the hardness of the cushion layer, i. with aggregates whose hardness is greater than that of the rubber-elastic material.
  • the padding layer may be provided over its entire surface with additives, but the concentration of the additives in the harder edge regions is kept greater than adjacent to these edge regions.
  • the proportion of aggregates in the harder marginal areas should go from 3 to 5 vol.% And adjacent to these margins should be less than 3 vol.%.
  • a metallic additive As far as a metallic additive is present, it should be distributed over the surface of the press pad so that the cushion layer has a uniform over the surface heat conduction.
  • non-metallic additives can additionally be provided which have little or no influence on the thermal conductivity. In this way, a uniform over the surface of the press pad thermal conductivity can be combined with an increase in hardness in the edge regions of the press pad.
  • the proportion of metallic additives over the surface of the press pad uniformly have a value between 1 to 3 vol.%,
  • plastic and / or ceramic additives up to a total content of aggregates of 5 vol.% ,
  • the additives may be formed, for example, as aggregate fibers and / or aggregate powder. Suitable materials for the additives are plastics, in particular aramids or other temperature-resistant plastics, metals and in particular copper and glass and ceramic additives in question.
  • the width of the edge regions may be between 10 to 50 cm, preferably the width is 20 to 30 cm.
  • the harder setting of the edge areas can be combined with an increase in the thickness of the harder edge areas. This should then rise continuously to the outer edges of the cushion layer.
  • the technology according to the invention makes it possible to provide the cushioning layer with harder areas, for example in the form of strips of the same width, which have the same distances, even at other, highly stressed areas.
  • the adjustment of the hardness is then carried out either by a harder elastomeric material or aggregates of the type described above or by combining both measures.
  • the carrier may lie completely within the padding layer, but also project at least partially over the surface on at least one side or on both sides of the padding layer.
  • the carrier is uniform over the surface of the press pad, so that its manufacture is simple.
  • such press pad is referred to the aforementioned documents.
  • the textile support can comprise upholstery threads in addition to the upholstery layer, which are each constructed from a core thread and an envelope of rubber-elastic material surrounding the core thread.
  • upholstery threads in addition to the upholstery layer, which are each constructed from a core thread and an envelope of rubber-elastic material surrounding the core thread.
  • the casing a higher hardness than the padding layer in the edge regions and / or the padding threads outside the edge regions, for example by a higher Shore hardness of the rubber-elastic material and / or by the hardness of the casing increasing additives in a corresponding manner as with the padding layer.
  • press pad 1 has a rectangular outline with opposite longitudinal edges 2, 3 and also opposite transverse edges 4, 5.
  • the press pad 1 has a cushion layer 6 with a uniform over the surface of the press pad 1 thickness.
  • the cushion layer 6 forms a matrix for a textile support, not shown here, in the form of a fabric.
  • a corresponding press pad 1 is from the EP 1 300 235 A1 known.
  • edge regions 8, 9, 10, 11 Adjacent to the longitudinal edges 2, 3 and the transverse edges 4, 5, hatched edge regions 8, 9, 10, 11 extend.
  • the hatching of the edge regions 8, 9, 10, 11 is intended to indicate that the cushioning layer 6 has a larger surface area in this region. Hardness has as in the adjacent, not hatched areas.
  • the compression resistance is thus higher in the edge regions 8, 9, 10, 11 than in the non-hatched regions. In this way, the pressure exerted by the press pad 1 in the edge regions 8, 9, 10, 11 is greater.
  • Reinforced strips 12, 13, 14 are provided in the area enclosed by the edge regions 8, 9, 10, 11.
  • the cushion layer 6 also has a higher Shore hardness than in the non-hatched areas.
  • the cushion layer 6 additionally has metal aggregates which are uniformly distributed over the surface of the press pad 1. In the edge regions 8, 9, 10, 11 and in the reinforcing strips 12, 13, 14, further additives of low thermal conductivity can be provided in order to obtain a greater hardness over these fillers than in the non-hatched regions of the cushion layer 6.
  • FIG. 2 shows a press pad 21, extending from the press pad 1 according to FIG. 1 only differentiated by a different distribution of harder areas.
  • the press pad 21 is also rectangular and has longitudinal edges 22, 23 and transverse edges 24, 25.
  • the press pad 21 also has a cushion layer 26 of silicone elastomer with over the surface of the press pad 1 constant thickness.
  • edge regions 27, 28 are three continuous between the transverse edges 24, 25 reinforcing strips 29, 30, 31, which are characterized by hatching.
  • the shading should make it clear that the Shore hardness of the cushion layer 26 is also increased in the area of the reinforcing strips 29, 30, 31 with respect to the non-hatched areas.
  • the cushion layer 26 may contain additives in the same manner as the press pad 1 according to FIG FIG. 1 described.
  • FIG. 3 shows a press pad 41 in cross section.
  • the press pad 41 has a padding layer 42 made of silicone elastomer into which a textile carrier 43 has been embedded, ie the padding layer 42 forms a matrix for the textile carrier 43.
  • the cushion layer 42 has a higher Shore hardness than in the intermediate region.
  • the textile carrier 43 is uniform over the surface of the press pad 41.
  • FIG. 4 represents a press pad 51 in cross-section.
  • the press pad 51 has - like the press pad 41 - a Padding layer 52 made of silicone elastomer, in which a textile support 53 is embedded.
  • Adjacent to the longitudinal edges 54, 55 extend opposite edge regions 56, 57, which are not only characterized in that there the cushion layer 52 has a higher Shore hardness than in the intermediate regions, but also in that the thickness of the edge portions 56th , 57 increases to the longitudinal edges 54, 55. In this way, when pressing a pressure gain in the edge regions 56, 57 is achieved not only by the higher hardness, but also by the greater thickness of the press pad 51.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)
EP07006196A 2007-03-26 2007-03-26 Coussinet pour presse doté d'un renfort aux extrémités Withdrawn EP1974896A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07006196A EP1974896A1 (fr) 2007-03-26 2007-03-26 Coussinet pour presse doté d'un renfort aux extrémités

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07006196A EP1974896A1 (fr) 2007-03-26 2007-03-26 Coussinet pour presse doté d'un renfort aux extrémités

Publications (1)

Publication Number Publication Date
EP1974896A1 true EP1974896A1 (fr) 2008-10-01

Family

ID=39027150

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07006196A Withdrawn EP1974896A1 (fr) 2007-03-26 2007-03-26 Coussinet pour presse doté d'un renfort aux extrémités

Country Status (1)

Country Link
EP (1) EP1974896A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110085120A (zh) * 2018-01-25 2019-08-02 三星显示有限公司 垫和使用垫的膜附接方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1957918U (de) * 1967-01-17 1967-03-30 Heimbach Gmbh Thomas Josef Presspolster aus waermebestaendigem, gegebenenfalls beschichtetem gewebe, insbesondere asbestgewebe, fuer hydraulische etagenpressen zur herstellung von schichtstoffplatten und verguetung von holzfaser- und holzspanplatten.
EP1040909A1 (fr) * 1999-03-03 2000-10-04 Thomas Josef Heimbach Gesellschaft mit beschränkter Haftung & Co. Coussinet pour presse
EP1386723A2 (fr) * 2002-07-31 2004-02-04 RHEINISCHE FILZTUCHFABRIK GmbH Coussinet pour presse
EP1533110A2 (fr) * 2003-11-12 2005-05-25 Bachmann Kunststoff Technologien GmbH Dispositif de pressage à chaud ayant une plaque de pression et au moins une couche élastique

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1957918U (de) * 1967-01-17 1967-03-30 Heimbach Gmbh Thomas Josef Presspolster aus waermebestaendigem, gegebenenfalls beschichtetem gewebe, insbesondere asbestgewebe, fuer hydraulische etagenpressen zur herstellung von schichtstoffplatten und verguetung von holzfaser- und holzspanplatten.
EP1040909A1 (fr) * 1999-03-03 2000-10-04 Thomas Josef Heimbach Gesellschaft mit beschränkter Haftung & Co. Coussinet pour presse
EP1386723A2 (fr) * 2002-07-31 2004-02-04 RHEINISCHE FILZTUCHFABRIK GmbH Coussinet pour presse
EP1533110A2 (fr) * 2003-11-12 2005-05-25 Bachmann Kunststoff Technologien GmbH Dispositif de pressage à chaud ayant une plaque de pression et au moins une couche élastique

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110085120A (zh) * 2018-01-25 2019-08-02 三星显示有限公司 垫和使用垫的膜附接方法
KR20190090901A (ko) * 2018-01-25 2019-08-05 삼성디스플레이 주식회사 패드 및 이를 이용한 필름의 접착 방법
US11376818B2 (en) 2018-01-25 2022-07-05 Samsung Display Co., Ltd. Pad and film attaching method using the same

Similar Documents

Publication Publication Date Title
EP2480801B1 (fr) Bande convoyeuse à câble d'acier comprenant une charnière de liaison pour le couplage de deux extrémités de courroie
DE3538036C2 (fr)
EP2189276B1 (fr) Presse à plaques et unité de coussin de presse pour tôle de presse
DE202007019506U1 (de) Verbesserungen an Presspolstern
EP2561169B1 (fr) Pièce d'écartement
DE2310965A1 (de) Bogenfoermige siebplatte fuer plastik und aehnliches material
DE102010036539A1 (de) Presspolster für eine hydraulische Presse
EP1533110A2 (fr) Dispositif de pressage à chaud ayant une plaque de pression et au moins une couche élastique
DE2224977A1 (de) Plattenpresse mit kontinuierlicher Arbeitsweise
DE202007006849U1 (de) Presspolster mit Randverstärkung
DE102006022264A1 (de) Siegelwerkzeug zum Siegeln von Folien in einer Siegelstation
EP1974896A1 (fr) Coussinet pour presse doté d'un renfort aux extrémités
EP2666623A2 (fr) Procédé de fabrication d'un coussin de presse ainsi que fils d'élastomère correspondants et coussin de presse correspondant
DE112016007514B4 (de) Wärmeisolationsplatte, Wärmeisolationsstruktur für Reifenvulkanisiergerät und Vulkanisierungsverfahren für Rohreifen
DE202007006767U1 (de) Presspolster
EP3116773B1 (fr) Élément de liaison à logement de serrage, notamment étrier de guidon ou tige de selle
DE102013214507A1 (de) Trägerrahmendichtung mit einem Kanalbereich
DE102018115121A1 (de) Herstellungsverfahren für Harzverbundplatten
EP3856506A1 (fr) Coussinet de presse et son procédé de production
CH710216A2 (de) Matte oder Band.
EP2796744A1 (fr) Ressort à lame et son procédé de fabrication
DE202018104296U1 (de) Stützkernverbundplatte
DE3022842A1 (de) Reibkoerper fuer scheibenbremsen und verfahren zur herstellung dieses reibkoerpers
DE2848733A1 (de) Plattenpresse
AT508545B1 (de) Federelement für matratzen

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK RS

AKX Designation fees paid
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20090402

REG Reference to a national code

Ref country code: DE

Ref legal event code: 8566