CN1307521A - Improvements to press pads - Google Patents
Improvements to press pads Download PDFInfo
- Publication number
- CN1307521A CN1307521A CN 99808036 CN99808036A CN1307521A CN 1307521 A CN1307521 A CN 1307521A CN 99808036 CN99808036 CN 99808036 CN 99808036 A CN99808036 A CN 99808036A CN 1307521 A CN1307521 A CN 1307521A
- Authority
- CN
- China
- Prior art keywords
- pressure pad
- polysiloxanes
- parallel
- metal
- warp
- 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.)
- Pending
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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
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/02—Apparatus or processes for manufacturing printed circuits in which the conductive material is applied to the surface of the insulating support and is thereafter removed from such areas of the surface which are not intended for current conducting or shielding
- H05K3/022—Processes for manufacturing precursors of printed circuits, i.e. copper-clad substrates
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Woven Fabrics (AREA)
- Laminated Bodies (AREA)
Abstract
A press pad for use in a laminating press and in particular in a high pressure, short cycle press comprises a woven fabric (12) of heat resistant strands wherein at least one of the warp (13) and the weft (14) comprises metal strips (15). Preferably, the warp (13) wholly comprises a series of unannealed copper or brass strips (15) which advantageously have a thickness between 0.1 mm and 0.15 mm inclusive and are between 4.0 mm and 5.0 mm inclusive wide. The weft (14) preferably comprises threads which have a silicone covering (17), which is advantageously at least 0.2 mm in thickness.
Description
The present invention relates to a kind of pressure pad, it is used to adopt the single daylight opening of low and high pressure and the press of multi-platen spacing to make laminate for example decorative laminate, laminate flooring and printed circuit board (PCB).
As shown in Figure 7, in the laminating machine of single daylight opening, at the laminate 1 that carries out punching press between two pressing plates 2 of press between two counterpressure metallic plates 3 and two pressure pads 4.Each pressure pad 4 is all between a counterpressure plate 3 and pressing plate 2.Pressure pad 4 is more bigger than the size of pressing plate 2 usually, makes and can clamp.
The purposes of pressure pad 4 is the density variations in the layer of compensation pressing plate 1, guarantees that thus the pressure that will equate is applied to all sites of plate 1.In addition, when being under the pressure, pressure pad 4 can compensate any air spots of pressing plate 2 of press self and any bending and the projection of pressing plate 2.This helps to prepare the laminate of smooth consistent in density again.Thus, pressure pad has resilience, and has natural elastic, makes it can compensate the air spots of above-mentioned density variation and pressing plate, and makes it can relax and reply its shape after each punching operation it can be reused, just become very important.All can transform the ability of oneself after each punching press that pressure pad has, avoid the unnecessary downtime of press to guaranteeing when rationally long service life is with the replacing pressure pad, be an important characteristic.
Yet, because the purposes of press is laminate to be applied heat under being in pressure the time, so that pressure pad also conducts the heat that is fed on the laminate by platen is just very important.The operating temperature of this press is usually up to 220 ℃.Under low pressure, when for example single daylight opening press generally was used for making decorative laminate, pressure pad must be in about 200 ℃ of following anti-25-35 kg/cm
2Pressure.Under high pressure, when for example short-period single daylight opening press generally is used for making laminate flooring, pressure pad must as preceding about 200 ℃ of similar temperature under anti-up to 70 kg/cm
2Pressure.
Therefore, general conventional pressure pad is the tight structure woven fabric that high temperature resistant non-asbestos yarn mixes with metal wire.In being included in, metal wire can provide good thermal conductivity via pad guide layer pressing plate.On the contrary, needing non-metal yarn, is can fill up with elasticity and resilience, and this is that pad can be relaxed after each punching operation is desired.When pressure pad is used for special-purpose, consider the relative scale of two kinds of materials.Usually need trade off between desired thermal mobility and resilience or the elasticity under every kind of situation.
EP0735949 A1 has described a kind of conventional pressure pad.It has described for example woven fabric of red metal line of heat-resisting strand, and wherein a high proportion of warp or parallel contain silicone elastomer.Especially, warp or parallel preferably contain the metal wire of polysiloxane coating.As a result who contains polysiloxane, this pressure pad has big resilience and elasticity, and the existence of metal wire has simultaneously guaranteed that pressure pad has the good thermal mobility from the pressing plate to the stamping material.Before the use, this pressure pad has machine-knitted structure as shown in Figure 8, and it has shown the profile of this pressure pad 5 that is about 10 times of full-size(d)s, and parallel 6 illustrates with section in this pressure pad, and warp 7 is interwoven in betwixt.Pad 5 is made into twill-weave, its middle longitude 7 below two parallels 6 and above alternately pass.General every of warp 7 all contains the metal strand line that overall diameter is about 0.6 millimeter, and parallel 6 contains the metal strand core 8 that is covered with polysiloxanes coating 9, and the overall diameter that provides is about 1.4 millimeters.Pad 5 self thickness T 1 are about 1.9 millimeters, and this is because the polysiloxanes coating 9 of parallel 6 is subjected to the extruding of warp 7 during woven.
The character that depends on the laminate that carries out punching press, such conventional pressure pad can be used in the press cycle many times of above-mentioned low-pressure list daylight opening press before damaging and must changing.Because in use, machine-knitted structure finally can be flattened to such degree: pressure pad can not relax after each punching operation, and pad its resilience of forfeiture and elasticity, so pad can wearing and tearing.Find: the section of this pad 10 as shown in Figure 9.Fill up 10 and initially have a structure same with pad shown in Figure 85.Yet, can see that in use, machine-knitted structure is extruded, make warp 7 tightly be close to parallel 6 bendings, finally form the rigid bridge 11 above the parallel 6.In addition, parallel 6 self-deformations are also very big, finally make metal-cored 8 and warp 7 between polysiloxanes coating 9 be extruded, and be deposited on below the bridge 11.When this phenomenon takes place, just no longer include any elasticity between the warp of pad 10 and the parallel, because metal-cored 8 directly contact with metal warp 7.
Thickness is that the press cycle number of times that the routine pad 5 similar to above-mentioned similar and structure and pad shown in Figure 9 10 of T2 can stand before wearing and tearing depends on punching press laminate character to a great extent.Decorative laminate and intermediate layer and low density fiberboard have inherent elasticity and resilience, make them in punching operation
Also help to provide desired compensation.Yet floor layer pressing plate and high density fiberboard have very little natural elastic, and when finding that above-mentioned conventional pressure pad is used for the laminate of these types of punching press, wearing and tearing are very fast.
An object of the present invention is to provide a kind of pressure pad, by a kind of such pressure pad is provided, just can overcome or alleviate the problems referred to above greatly, this pressure pad is compared with conventional pressure pad, especially be used for punching press high-density layer pressing plate, for example when floor layer pressing plate and high density fiberboard, under the situation of not losing a bit thermophoresis ability, still can keep its elasticity and to the compensation ability of press cycle repeatedly.Second purpose of the present invention is that a kind of pressure pad is provided in some embodiments, and its thermophoresis can have raising by the conventional pressure pad of force rate.
According to the present invention, a kind of pressure pad that is used for laminating machine is provided, it is the woven fabric that contains heat-resisting strand, it is characterized in that having a kind of bonding jumper that contains in warp and the parallel at least.
Here with claims in employed " bar " speech, be meant that the woven line that contains bar has more flat upper surface and lower surface, and with respect to its width, thickness is narrower, this conventional yarn or metal wire with main rounded section shape is different.
Warp preferably contains a series of metal bars, and parallel preferably contains the line of polysiloxane coating.The bonding jumper warp preferably contains metal tape, but also can contain the flat pigtail shape bonding jumper or the braided metal bar of pressing.
The preferred 0.05-0.2 millimeter of the thickness of bar.Advantageously, the thickness of bar is the 0.1-0.15 millimeter.
The width of bar preferably is at least 2.0 millimeters.Advantageously, the width of bar is the 4.0-5.0 millimeter.
Parallel also preferably contains metal wire and the glass thread that the glass thread of aramid yarns, polysiloxanes coating of strand metal wire, the polysiloxanes coating of metal wire, the polysiloxanes coating of at least a polysiloxanes coating or long filament, solid-state polysiloxanes line, aromatic polyamides line, polyamide yarn coat.
Bonding jumper is also preferably made by red metal or red brass alloys.Advantageously, bar is made by unannealed red metal or brass.
Below, with embodiment the present invention is described with reference to accompanying drawing, wherein:
Fig. 1 is the plane of the part of plain woven pressure pad of the present invention.
Fig. 2 is the figure similar to Fig. 1, but that pressure pad is a twill is woven.
Fig. 3 and 4 is respectively the generalized section of the woven fabric shown in Fig. 1 and 2.
Fig. 5 is that pressure pad shown in Figure 1 is at the profile without the amplification before any use.
Fig. 6 is the figure similar to Fig. 5, but is the figure after pressure pad uses.
Fig. 7 is the interior laminate of the single daylight opening press of demonstration and the conventional spread mode figure of pressure pad.
Fig. 8 is that conventional pressure pad is at the profile without the amplification before any use.
Fig. 9 is the figure after the same conventional pressure pad similar to Fig. 8 is worn through use.
As illustrated in fig. 1 and 2, the pressure pad 12 that is used for laminating machine contains organic fabric, and it is by anti-at least 220 ℃ of temperature and anti-substantially 20-100 kg/cm
2The material of pressure make.Especially, pressure pad 12 is applicable to and is used for making the high-density layer pressing plate, for example high pressure of floor layer pressing plate, short period press, and use therein pressure is up to 70 kg/cm
2, about 200 ℃ of temperature.Yet pressure pad 12 also is applicable to the single daylight opening press and the multi-platen spacing press of low-pressure.
Fig. 1 and 2 has shown two examples that are applicable to the woven fabric of making pressure pad of the present invention.Yet, will recognize that, also can use the woven fabric of many other types.
Corresponding to the profile of the woven fabric of these examples in a usual manner respectively shown in Fig. 3 and 4.Here, be that parallel A shows with section, warp B interweaves betwixt.
In Fig. 1 and 3, woven fabric contains individual layer plain weave or plain fabric.Here, warp B, promptly bar 15 disposable above single parallel A and below pass.Yet, in a kind of 2/2 twill is woven, shown in Fig. 2 and 4, the warp B of bar 15 forms alternately pass the following of two parallel A and above, and woven fabric on two surfaces of fabric, have equivalent through wire material, show identical outward appearance thus on the two sides.
On the surface of the twill woven fabric pressure pad of Fig. 2 and 4, wherein bonding jumper 15 is walked longer distance on the plain fabric than Fig. 1 and 3 on parallel 14.This just provides has more smoothly, is formed with the metal surface of herringbone metal pattern on it.This can be favourable in certain applications.
For bar 15 being included in pressure pad woven, be necessary to change the structure of conventional loom.In a loom, warp is passed in its back shuttle band and before the internal voids of the round reed that moves of parallel around on axle, and warp is process above the back rest, and passes the eye of heddle (heald).What heddle (heald) component part shed open formed combines, and comprises to have and be generally the heddle (heald) that circular being fit to mainly is the steel wire eye of circular section warp.Will recognize that,, must change the shape of the eye in the heddle (heald) in order as suggested in the present invention, to hold strip.
As illustrated in fig. 1 and 2, bar 15 contains flat metal tape.Yet they also can contain flat pigtail shape sheet metal or flat braided metal sheet, and the both is made by the metal filament or the fine rule of pigtail shape or braiding.
The preferred thickness of bar 15 is the 0.05-0.2 millimeter, advantageously is the 0.1-0.15 millimeter.If bar 15 is too thin, they are just firm inadequately so, the pressure that runs in the not anti-use, and can split.Yet if bar is too thick, they just can not be made into woven fabric so.As described below, minimum with reference to Fig. 5 for pressure pad is in use vertically shunk, carry out when woven bar 15 and bend or curl around parallel 14 and just be even more important.Because when pad stands high pressure in press, shrink, form the castle shape so pressure causes bonding jumper 15 around parallel 14, and tightly contact with parallel 14.If warp 13 is initial not to carry out wovenly fully contiguously around parallel 14, so in use, these lines 13 just are forced to more contact with parallel 14, and this can make them be drawn as pad, makes it thus along the contraction of warp generation length.Under these situations, can produce about 10% and the shrinkage factor of Geng Gao.
The preferable width of bar 15 is at least 2.00 millimeters, but considers that from the thermophoresis angle that sees through pad advantageously, its width is the 4.00-5.00 millimeter.
Once more, in order to make the thermophoresis maximum that sees through pad, bar 15 is made by the high metal of thermal mobility.Thus, bar 15 is preferably made by red metal or red brass alloys.In order to reduce the metal fatigue in the bar 15, especially when parallel 14 contained polysiloxane, bar 15 contained unannealed red metal or brass so.
The parallel 14 of pressure pad and the warp 13 of any no bonding jumper 15 preferably contain following one or more: metal wire, glass thread that the glass thread of the strand metal wire of the metal wire of polysiloxanes coating, polysiloxanes coating, the aramid yarns of polysiloxanes coating, polysiloxanes coating or long filament, solid-state polysiloxanes line, aramid yarns, polyamide yarn coat.In addition, metal strand line for example red metal or stainless steel strand line can coat in a usual manner with aramid yarns, and stainless steel strand line also can be used for weaving the outside of the red metal line of polysiloxanes coating.
For the resilience and the elasticity maximum that make pad, parallel 14 can advantageously contain the line or the metal wire of polysiloxane coating, red metal line for example, as shown in Figure 5.Here, every warp 13 all contains bonding jumper 15, and every parallel 14 all contains the strand red metal core 16 that has the silicone elastomer outer covering layer that is squeezed into.In order to guarantee to obtain best performance, wherein elasticity is both not too big also not too crisp under punching press, and the proportion of silicone elastomer coating 17 is preferably the 1.1-1.4 gram per centimeter
3Preferably at least 0.2 millimeter of the wall thickness d1 of coating 17, total outside diameter d 2 of the metal wire of polysiloxanes coating is at least 1.0 millimeters, preferred about 1.4 millimeters.Metal-cored 16 also preferably contain strand or pigtail shape metal wire, and this metal wire contains at least 7 wires strands, and overall diameter d3 is about 0.6 millimeter.
As seen from Figure 5, bonding jumper 15 is woven crooked or curl around parallel 14 therebetween, has only 17 distortion of minimum polysiloxanes coating or is squeezed.Warp and weft dimension be as mentioned above the time, just make use before gross thickness be about 1.6 millimeters pressure pad.Owing to be positioned at the support face width of the bar 15 above parallel 14 surface, just can be pressed into the polysiloxanes coating significantly, this with as shown in Figure 9 conventional pressure pad 5 in the very big gross distortion and the extruding that cause by metal warp 7 form contrast.
Therefore, during use with use after, when the surface of pad 12 flattens, bonding jumper 15 more is adjacent to the surface curvature of parallel 14, as shown in Figure 6, the possibility that bonding jumper 15 warps are invaded in the polysiloxanes coating 17 is little, thus, become littler with metal-cored 16 possibilities that directly contact of parallel 14, this and the conventional pulvilliform of use shown in Figure 9 are shone in pairs.Here the relative thickness of bonding jumper 15 and polysiloxanes coating 17 also is relevant, and when standing high pressure, the bar 15 of relative thin also helps to keep the quite thick polysiloxanes between bar 15 and the parallel metal-cored 16.The resilience degree that provides by the polysiloxanes coating that is present between parallel metal-cored 16 and the warp bonding jumper 15 is provided, can remains in the pad 12, even, also be like this when it is flattened to identically with pressure pad shown in Figure 9 10.Therefore, especially when being used for the very little high-density layer pressing plate of the resilience of punching press self for example when floor layer pressing plate and high density fiberboard etc., just can expecting to fill up and service life of 12 prolong a lot than conventional pad.
In addition, the thermal mobility that also can expect pressure pad as shown in Figure 5 also increases such as conventional pressure pad shown in Figure 8.There are two main causes in this.The first, the area that bonding jumper 15 contacts with platen increases greatly than warp 7 metal wires of conventional pressure pad 5, has improved the heat conduction velocity that sees through pad thus.The second, the weight metal in the pressure pad of the present invention as shown in Figure 5 is approximately than conventional pressure pad 5 low 50%.This means that the speed that new pad warms up will be more faster than conventional pressure pad, and thus can be quickly with the temperature required laminate that reaches punching press.As a result, stamping period just can be retained to the shortest, makes pad efficient in use higher than conventional pad.
Tenor is lower than routine pad 5 in the new pressure pad, also helps making lighter pad, helps to process and handle big pressure pad by punching operation.
Claims (12)
1. a pressure pad that is used for the woven fabric that contains heat-resisting strand (12) of laminating machine is characterized in that at least a bonding jumper (15) that contains in described warp (13) and the parallel (14).
2. pressure pad as claimed in claim 1 is characterized in that described warp (13) contains a series of metal bars (15), and parallel (14) contains the line with polysiloxanes coating (17).
3. pressure pad as claimed in claim 1 or 2, the thickness that it is characterized in that described (15) is the 0.05-0.2 millimeter.
4. as each described pressure pad among the claim 1-3, the thickness that it is characterized in that described (15) is the 0.1-0.15 millimeter.
5. as each described pressure pad among the claim 1-4, it is characterized in that the width of described (15) is at least 2.00 millimeters.
6. as each described pressure pad among the claim 1-5, the width that it is characterized in that described (15) is the 4.00-5.00 millimeter.
7. as each described pressure pad among the claim 1-6, it is characterized in that described bonding jumper (15) made by red metal or red brass alloys.
8. as each described pressure pad among the claim 1-7, it is characterized in that described warp (13) all contains a series of metal bars (15), parallel (14) contains the metal wire of at least a polysiloxanes coating, metal wire and glass thread that the glass thread of the strand metal wire of polysiloxanes coating, the aramid yarns of polysiloxanes coating, polysiloxanes coating or long filament, solid-state polysiloxanes line, aramid yarns, polyamide yarn coat.
9. as each described pressure pad among the claim 1-8, it is characterized in that described parallel (14) contains the metal wire (16) that has polysiloxanes coating (17).
10. as claim 2 or 9 described pressure pads, the proportion that it is characterized in that described polysiloxanes coating (17) is the 1.1-1.4 gram per centimeter
3
11. pressure pad as claimed in claim 10 is characterized in that the thickness of described polysiloxanes coating (17) is at least 0.2 millimeter, total external diameter of the parallel (14) that polysiloxanes coats is at least 1.0 millimeters.
12. as each described pressure pad among the claim 9-11, it is characterized in that described metal wire (16) contains strand or braiding red metal line, wherein the diameter of every single line is at least 0.05 millimeter.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9814133.6 | 1998-07-01 | ||
| GBGB9814133.6A GB9814133D0 (en) | 1998-07-01 | 1998-07-01 | Improvements to press pads |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1307521A true CN1307521A (en) | 2001-08-08 |
Family
ID=10834672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99808036 Pending CN1307521A (en) | 1998-07-01 | 1999-06-29 | Improvements to press pads |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP1091845A1 (en) |
| CN (1) | CN1307521A (en) |
| AU (1) | AU4524199A (en) |
| CA (1) | CA2333722A1 (en) |
| GB (1) | GB9814133D0 (en) |
| TR (1) | TR200003823T2 (en) |
| WO (1) | WO2000001522A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100439089C (en) * | 2001-09-27 | 2008-12-03 | 托马斯约瑟夫亨巴赫有限公司 | Pressure pad |
| CN101460008B (en) * | 2007-12-14 | 2010-06-02 | 英业达股份有限公司 | Circuit board having improved support fabric structure |
| CN113454277A (en) * | 2019-03-19 | 2021-09-28 | 胡克莱茵有限责任公司 | Pressure pad for use in single or multi-layer hot presses |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0008613D0 (en) * | 2000-04-08 | 2000-05-31 | Marathon Belting Ltd | Improvements to press pads |
| DE20011030U1 (en) * | 2000-06-21 | 2001-08-02 | Thomas Josef Heimbach GmbH, 52353 Düren | Press pad as well as hot plate press and plate press with such press pads |
| DE50105545D1 (en) * | 2001-09-27 | 2005-04-14 | Heimbach Gmbh Thomas Josef | press pad |
| DE202012005265U1 (en) * | 2012-05-26 | 2012-06-27 | Rolf Espe | Press pad for single and multi-day heating presses with heat-conducting contact closing threads in warp and / or weft direction |
| DE102018133542A1 (en) * | 2018-12-21 | 2020-06-25 | Hueck Rheinische Gmbh | Press pad and process for its manufacture |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2405975A1 (en) * | 1974-02-08 | 1975-08-21 | Goldschmidt Ag Th | Pressure cushions for hot presses - made of resin coated metal fibre mat |
| GB9421573D0 (en) * | 1994-10-26 | 1994-12-14 | Marathon Belting Ltd | A press pad |
-
1998
- 1998-07-01 GB GBGB9814133.6A patent/GB9814133D0/en active Pending
-
1999
- 1999-06-29 AU AU45241/99A patent/AU4524199A/en not_active Abandoned
- 1999-06-29 TR TR2000/03823T patent/TR200003823T2/en unknown
- 1999-06-29 EP EP99928122A patent/EP1091845A1/en not_active Withdrawn
- 1999-06-29 CA CA002333722A patent/CA2333722A1/en not_active Abandoned
- 1999-06-29 CN CN 99808036 patent/CN1307521A/en active Pending
- 1999-06-29 WO PCT/GB1999/002038 patent/WO2000001522A1/en not_active Application Discontinuation
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100439089C (en) * | 2001-09-27 | 2008-12-03 | 托马斯约瑟夫亨巴赫有限公司 | Pressure pad |
| CN101460008B (en) * | 2007-12-14 | 2010-06-02 | 英业达股份有限公司 | Circuit board having improved support fabric structure |
| CN113454277A (en) * | 2019-03-19 | 2021-09-28 | 胡克莱茵有限责任公司 | Pressure pad for use in single or multi-layer hot presses |
Also Published As
| Publication number | Publication date |
|---|---|
| TR200003823T2 (en) | 2001-06-21 |
| WO2000001522A1 (en) | 2000-01-13 |
| CA2333722A1 (en) | 2000-01-13 |
| GB9814133D0 (en) | 1998-08-26 |
| EP1091845A1 (en) | 2001-04-18 |
| AU4524199A (en) | 2000-01-24 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |