CA2049397A1 - Method of and apparatus for the production of embossed laminate board - Google Patents
Method of and apparatus for the production of embossed laminate boardInfo
- Publication number
- CA2049397A1 CA2049397A1 CA002049397A CA2049397A CA2049397A1 CA 2049397 A1 CA2049397 A1 CA 2049397A1 CA 002049397 A CA002049397 A CA 002049397A CA 2049397 A CA2049397 A CA 2049397A CA 2049397 A1 CA2049397 A1 CA 2049397A1
- Authority
- CA
- Canada
- Prior art keywords
- press
- stack
- boards
- laminates
- closure
- 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.)
- Abandoned
Links
- 238000000034 method Methods 0.000 title claims description 12
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 238000007599 discharging Methods 0.000 claims abstract description 5
- 238000004049 embossing Methods 0.000 claims description 11
- 238000009966 trimming Methods 0.000 claims description 2
- 229920003002 synthetic resin Polymers 0.000 claims 2
- 239000000057 synthetic resin Substances 0.000 claims 2
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 239000011347 resin Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 102000006835 Lamins Human genes 0.000 description 2
- 108010047294 Lamins Proteins 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000001351 cycling effect Effects 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 210000005053 lamin Anatomy 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 102000016736 Cyclin Human genes 0.000 description 1
- 108050006400 Cyclin Proteins 0.000 description 1
- 241000479907 Devia <beetle> Species 0.000 description 1
- 101100285518 Drosophila melanogaster how gene Proteins 0.000 description 1
- 241001547070 Eriodes Species 0.000 description 1
- 241000243251 Hydra Species 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- QRXWMOHMRWLFEY-UHFFFAOYSA-N isoniazide Chemical compound NNC(=O)C1=CC=NC=C1 QRXWMOHMRWLFEY-UHFFFAOYSA-N 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- KRTSDMXIXPKRQR-AATRIKPKSA-N monocrotophos Chemical compound CNC(=O)\C=C(/C)OP(=O)(OC)OC KRTSDMXIXPKRQR-AATRIKPKSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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
- B30B15/062—Press plates
- B30B15/064—Press plates with heating or cooling means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/06—Making particle boards or fibreboards, with preformed covering layers, the particles or fibres being compressed with the layers to a board in one single pressing operation
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B7/00—Presses characterised by a particular arrangement of the pressing members
- B30B7/02—Presses characterised by a particular arrangement of the pressing members having several platens arranged one above the other
- B30B7/023—Feeding or discharging means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
- B32B37/26—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer which influences the bonding during the lamination process, e.g. release layers or pressure equalising layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/18—Handling of layers or the laminate
- B32B38/1825—Handling of layers or the laminate characterised by the control or constructional features of devices for tensioning, stretching or registration
- B32B38/1833—Positioning, e.g. registration or centering
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
- B44B5/00—Machines or apparatus for embossing decorations or marks, e.g. embossing coins
- B44B5/02—Dies; Accessories
- B44B5/024—Work piece loading or discharging arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
- B44B5/00—Machines or apparatus for embossing decorations or marks, e.g. embossing coins
- B44B5/02—Dies; Accessories
- B44B5/028—Heated dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2317/00—Animal or vegetable based
- B32B2317/16—Wood, e.g. woodboard, fibreboard, woodchips
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2607/00—Walls, panels
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Laminated Bodies (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
Laminates are pressed into laminate board under heat and pressure and embossed in a laminate press into which a stack of two laminates with a separator between them is introduced so that along longitudinal edges of the stack at least portions remain free when the press is closed for engagement with clamping device of the press discharging unit. As a result, the stack can be engaged while the press is closed so that the opening of the press will not cause relative shifting of the two boards and interfere with the discharge of the press. Once the boards are removed from the press the unpressed portions can be trimmed from the board.
Laminates are pressed into laminate board under heat and pressure and embossed in a laminate press into which a stack of two laminates with a separator between them is introduced so that along longitudinal edges of the stack at least portions remain free when the press is closed for engagement with clamping device of the press discharging unit. As a result, the stack can be engaged while the press is closed so that the opening of the press will not cause relative shifting of the two boards and interfere with the discharge of the press. Once the boards are removed from the press the unpressed portions can be trimmed from the board.
Description
Z0~93~7 ME~HO~ OF A~D ~PPARATUS FOR T~E PRODUC~ION OF
E~OSS~D LA~INA~E ~OARD
SPECIFI~ATION
My presen~ invention relates to a met~od of ma~in~
laminate board formed from a laminate ~tack ~mpregnated with or containing a hardenable synthe~ic res~n and, more particularly, to a m~thod of ma~ng s~ch lam~na~e board in a single-level platen press, especlally ~or çm~ossed or decora~ive laminate board. The invention also rel~te~ to an apparatu~ ~or produ~ing such ~oard and, in particular, ~o a single-level platen press ~or ~he purpose.
e- ~
I~ i8 known to pr~vide deco~ l~mlnate board, i.e. lamlnate board which i~ pxovided on one of lts ~ur~aaes with a partic~lar tex~ure, pa~tern or d~coration, referred to here as embossing, by pressing a laminate containing a hardenable synthetiq resin either as an impregnating agent ~or the ma~erial forming the laminate or as a material ~pon the material which con~titutes the laminate under he~t ~nd pres~ure inJ ~or example, a pla~en press. The lamina~e is pressed in part agains~ an embossing s~rface WhiCh lmpart~ the pattern to a ~a~e o~ the laminate an~ ~he press can be held closed ~or a period o ~ime su~ficien~ to ~llow hardening of the resin and the transformation of the laminate into the em~ossed board.
It is known in the production of embossed laminate board to provide a stack ~onsisting of ~wo lam$n~tes separated by an intervening layer, referred to herein as a separat~ng layer, and to press this stack in a multilevel platen pr~s~.
Press-charging and dis¢harging units are provided ~or t~e multilevel pl~ten press which are ~imilar in con~truction and oper~tion to the press-charging and pre~s-disaharging units u~ed in t~e produ~tion o~ pre~ed board, fiber boa~d, particle board and the li~e in mul~ile~el presse5.
Decor laminate board, as a rule, i~ ~ormed fro~ a mult~layer as6em~1y, i.e. ~ a lam~nate compos~d o~ a multiplicity of làyers wnich must ~e assembled to ~orm ~he stack. The intermediate layer~ ~a~ be oomposed o~ 80-called ~ra~t paper and the layers which are pro~ided with ths deco~
. ~ruct~re, i.e. which are embos~ed or patterned, referred to generally as so-called overlays, can be compo~ed of 6yn~hetic resin foil.
The kra$t paper layer~ may b~ ~ynthetic re~in impregnated papers ~hich are s~acked to form the lam~na~e and covered by an overlay.
The lamînate 1~ subjected ~o the pressuxe and heat o~ the press to ~ransform the lamina~e into the board by hardening o~
the s~nthe~ic re~in sy6~em.
ZOa~939 182~1 In practice it is de~ira~le to llmi~ the num~er of patt~rns w~i~h are to be applied ~ince each chan~ of pattern requ~res a change of the pre~ pla~en~ whioh are used and ~hus rPplaceable pattern plates have been developed for use in the platen press. These p~ern plates may be comparativel~ thin, i.e. have a xelatively small thickness ~y compaxison with the thi~kness o~ the platen.
~ he earlier teahniques, therefore, reguired presses de~ined ~or the production of single patterns and whic~
~emained in operation ~or lon~ period~ of time while more recent techniques effe~t more frequent changes of pat~ern by changes of the pat~erning plate~ for partiçular lot~ o~ ~he laminate boa~d. As a conseg~enae, there i~ increaslng ten~ency to use single-level presses by contra~t to multilevel pre~ses since the pattern chanseover can be ~o~e rapid.
Both sin~le-level presses and multilevel pres~es oan be re~erred ~o as cycling presse~ and it should be reaognized that it is also possible ~o ~abrlcate decor laminate board in ¢ontlnuous presce~, i.e. be~ween two steel belts in a steel ~o belt press. In this ca6e, the press belt~ or at ~east one of the prQss belts must ~ pro~ided wlth the ~tructure or pattern-ing for the em~ossing of the lam~nate. Such pre~s bel~s do not always of~er a satisfa~tory l~fe when used for the production o~ decorati~e laminate~ of the ~ype described.
~5 ~eplace~ent of st~el press belts i~ al~o ~xtraordinarily ~ime consuming so that, as a pr~otical ma~ter, suc~ presses ~annot be utilized ~or ~h~ produc~ion of decorative laminate boards in 6mall lo~. Th~ same ~pplles ~or multilevel pla~en presses .
;2()49397 It should also b~ noted that different teahnologie~ are invol~ed e~en in the produ~tio~ of decorati~e laminate board3 in ~o-called cycling pres~es, l.e~ multilevel pla~en pre~ses as opposed to ~ngle-le~el platen pres~es. Proces~e~ whlch use ein~ level platen pre~se~ can be described as short cycle processes. A similar technology i~ involve~ a in ~he case o~ lamination of pres~ed board ~r the li~e. Single-leve platen pre~ses re~ulre special chargin~ and discharging ~y~tems which make use of cl~ping arrangement~ a~ w~ll b~
apparen~ fxom German Patent Documents ~E 2209901 and D~
1911764. These systems cannot, however, operate with two laminates ~ed to a ~gle l~vel pres~ s~multaneously or for the rQmoval o~ ~Wo pressed board3 in a ~tack with a separ~tor between them. The problems encoun~ered Wit~ ~ese earlier system~ ln e~orts to us~ them under ~uch ~ondition~, espeaial~y in a ~hort cyale op~ration, i8 that upon ~h~ rapid opening o~ the press, air enter~ the space between the pla~ens ~nd causes uncontrolled movemenk of the individual bo~rd~, there~y m~ing it di~icult if not impossibl~, t~ remove ~he board~ wi~h these aonventional sys~ems~
Thi~ particular problem may not characterlze multile~e~
presses and the charging and dischar~lng ~ystemC which are normally used th~rewi~h.
It i~, there~o~e, ~he principal objec~ o~ the inv~ntion to provide an improved ~ethod o~ producing decora~ive laminate board and, aonco~itten~ly, an improved method of operating a 1829~
single-level plate~ pres~ for that purpose, which prevents un~on~rolled movement of ~e l~minat~ board and, there~ore, eliminates problem~ hitherto encountexed in the production o~
lamina~e board with a single-level platen press.
Another ob~ect of the in~ention i~ to provide an apparatus incl~ding a ~ingle-leYel ~laten press and a pre~s-di~charqing unit which c~n allow rapid cycl~ng produation of decorati~e lam~nate board.
Sti~l another ~b~ec~ o~ ths invention is to provide an improved me~hod o~ and apparatU5 ~or ~he production of decorati~e laminate board in a single l~el platen presR, whereby disadva~tages o~ earlier ~ystems are a~oided.
These o~ect~ and others WniCh wlll bçco~e app~rent h~einafter are attained, in accordance wi~h the invention in a sys~em ~n whi~h two laminates capabl2 o~ pro~iding the decorative laminate boards, ~ith a separator between them are inserted as a stack into a single-level platen press which can have repla~eable embossing plates or shee~s along the ~de~ of ~0 ~h~ plat~s con~ronting the faces o~ the two laminates to be embossed~ The ~tac~ is lnsert2d w~th the aid o~ a aharging devi¢e with the press ~ully opened and the maxlmum spacln~
between ~he press sur$a~es~ When th~ ~tack is laid in~o the press, the latter is closed and held closed ~or ~hQ
p~e~etermining ~ardening time of the ~ynthetic resin under the hea~ ~nd pressure applied ~y t~e press and the ~wo lam~na~e ~oards ~hi~h result are then drawn by a di~charging unit.
E~OSS~D LA~INA~E ~OARD
SPECIFI~ATION
My presen~ invention relates to a met~od of ma~in~
laminate board formed from a laminate ~tack ~mpregnated with or containing a hardenable synthe~ic res~n and, more particularly, to a m~thod of ma~ng s~ch lam~na~e board in a single-level platen press, especlally ~or çm~ossed or decora~ive laminate board. The invention also rel~te~ to an apparatu~ ~or produ~ing such ~oard and, in particular, ~o a single-level platen press ~or ~he purpose.
e- ~
I~ i8 known to pr~vide deco~ l~mlnate board, i.e. lamlnate board which i~ pxovided on one of lts ~ur~aaes with a partic~lar tex~ure, pa~tern or d~coration, referred to here as embossing, by pressing a laminate containing a hardenable synthetiq resin either as an impregnating agent ~or the ma~erial forming the laminate or as a material ~pon the material which con~titutes the laminate under he~t ~nd pres~ure inJ ~or example, a pla~en press. The lamina~e is pressed in part agains~ an embossing s~rface WhiCh lmpart~ the pattern to a ~a~e o~ the laminate an~ ~he press can be held closed ~or a period o ~ime su~ficien~ to ~llow hardening of the resin and the transformation of the laminate into the em~ossed board.
It is known in the production of embossed laminate board to provide a stack ~onsisting of ~wo lam$n~tes separated by an intervening layer, referred to herein as a separat~ng layer, and to press this stack in a multilevel platen pr~s~.
Press-charging and dis¢harging units are provided ~or t~e multilevel pl~ten press which are ~imilar in con~truction and oper~tion to the press-charging and pre~s-disaharging units u~ed in t~e produ~tion o~ pre~ed board, fiber boa~d, particle board and the li~e in mul~ile~el presse5.
Decor laminate board, as a rule, i~ ~ormed fro~ a mult~layer as6em~1y, i.e. ~ a lam~nate compos~d o~ a multiplicity of làyers wnich must ~e assembled to ~orm ~he stack. The intermediate layer~ ~a~ be oomposed o~ 80-called ~ra~t paper and the layers which are pro~ided with ths deco~
. ~ruct~re, i.e. which are embos~ed or patterned, referred to generally as so-called overlays, can be compo~ed of 6yn~hetic resin foil.
The kra$t paper layer~ may b~ ~ynthetic re~in impregnated papers ~hich are s~acked to form the lam~na~e and covered by an overlay.
The lamînate 1~ subjected ~o the pressuxe and heat o~ the press to ~ransform the lamina~e into the board by hardening o~
the s~nthe~ic re~in sy6~em.
ZOa~939 182~1 In practice it is de~ira~le to llmi~ the num~er of patt~rns w~i~h are to be applied ~ince each chan~ of pattern requ~res a change of the pre~ pla~en~ whioh are used and ~hus rPplaceable pattern plates have been developed for use in the platen press. These p~ern plates may be comparativel~ thin, i.e. have a xelatively small thickness ~y compaxison with the thi~kness o~ the platen.
~ he earlier teahniques, therefore, reguired presses de~ined ~or the production of single patterns and whic~
~emained in operation ~or lon~ period~ of time while more recent techniques effe~t more frequent changes of pat~ern by changes of the pat~erning plate~ for partiçular lot~ o~ ~he laminate boa~d. As a conseg~enae, there i~ increaslng ten~ency to use single-level presses by contra~t to multilevel pre~ses since the pattern chanseover can be ~o~e rapid.
Both sin~le-level presses and multilevel pres~es oan be re~erred ~o as cycling presse~ and it should be reaognized that it is also possible ~o ~abrlcate decor laminate board in ¢ontlnuous presce~, i.e. be~ween two steel belts in a steel ~o belt press. In this ca6e, the press belt~ or at ~east one of the prQss belts must ~ pro~ided wlth the ~tructure or pattern-ing for the em~ossing of the lam~nate. Such pre~s bel~s do not always of~er a satisfa~tory l~fe when used for the production o~ decorati~e laminate~ of the ~ype described.
~5 ~eplace~ent of st~el press belts i~ al~o ~xtraordinarily ~ime consuming so that, as a pr~otical ma~ter, suc~ presses ~annot be utilized ~or ~h~ produc~ion of decorative laminate boards in 6mall lo~. Th~ same ~pplles ~or multilevel pla~en presses .
;2()49397 It should also b~ noted that different teahnologie~ are invol~ed e~en in the produ~tio~ of decorati~e laminate board3 in ~o-called cycling pres~es, l.e~ multilevel pla~en pre~ses as opposed to ~ngle-le~el platen pres~es. Proces~e~ whlch use ein~ level platen pre~se~ can be described as short cycle processes. A similar technology i~ involve~ a in ~he case o~ lamination of pres~ed board ~r the li~e. Single-leve platen pre~ses re~ulre special chargin~ and discharging ~y~tems which make use of cl~ping arrangement~ a~ w~ll b~
apparen~ fxom German Patent Documents ~E 2209901 and D~
1911764. These systems cannot, however, operate with two laminates ~ed to a ~gle l~vel pres~ s~multaneously or for the rQmoval o~ ~Wo pressed board3 in a ~tack with a separ~tor between them. The problems encoun~ered Wit~ ~ese earlier system~ ln e~orts to us~ them under ~uch ~ondition~, espeaial~y in a ~hort cyale op~ration, i8 that upon ~h~ rapid opening o~ the press, air enter~ the space between the pla~ens ~nd causes uncontrolled movemenk of the individual bo~rd~, there~y m~ing it di~icult if not impossibl~, t~ remove ~he board~ wi~h these aonventional sys~ems~
Thi~ particular problem may not characterlze multile~e~
presses and the charging and dischar~lng ~ystemC which are normally used th~rewi~h.
It i~, there~o~e, ~he principal objec~ o~ the inv~ntion to provide an improved ~ethod o~ producing decora~ive laminate board and, aonco~itten~ly, an improved method of operating a 1829~
single-level plate~ pres~ for that purpose, which prevents un~on~rolled movement of ~e l~minat~ board and, there~ore, eliminates problem~ hitherto encountexed in the production o~
lamina~e board with a single-level platen press.
Another ob~ect of the in~ention i~ to provide an apparatus incl~ding a ~ingle-leYel ~laten press and a pre~s-di~charqing unit which c~n allow rapid cycl~ng produation of decorati~e lam~nate board.
Sti~l another ~b~ec~ o~ ths invention is to provide an improved me~hod o~ and apparatU5 ~or ~he production of decorati~e laminate board in a single l~el platen presR, whereby disadva~tages o~ earlier ~ystems are a~oided.
These o~ect~ and others WniCh wlll bçco~e app~rent h~einafter are attained, in accordance wi~h the invention in a sys~em ~n whi~h two laminates capabl2 o~ pro~iding the decorative laminate boards, ~ith a separator between them are inserted as a stack into a single-level platen press which can have repla~eable embossing plates or shee~s along the ~de~ of ~0 ~h~ plat~s con~ronting the faces o~ the two laminates to be embossed~ The ~tac~ is lnsert2d w~th the aid o~ a aharging devi¢e with the press ~ully opened and the maxlmum spacln~
between ~he press sur$a~es~ When th~ ~tack is laid in~o the press, the latter is closed and held closed ~or ~hQ
p~e~etermining ~ardening time of the ~ynthetic resin under the hea~ ~nd pressure applied ~y t~e press and the ~wo lam~na~e ~oards ~hi~h result are then drawn by a di~charging unit.
2 0 ~93 97 A~cording to the invention, th~ ~ta~ is ~o inserted into the pre~s thA~ a~ lea~t along the longitudinal edges of the stack regio~s re~ain exposed or free upon alo~ing o~ the press. ~ese regions o~ the stack before pre s open~ng or upon pre~s opening are engaged by the pickup elements o~ the discha~ge unit so that the entire ~tack can be removed and the plates thereof trimmed.
~ecause the stac~ can be engaged by the ~iakup deviaes of the dischar~e unit before the pres~ is f~lly opened or during lo the clo~ed condition of the pxe~s, beaause of the s~ack rem~ning exposed e~en whe~ the pre&~ i~ closed, for ~u~
en~a~ement, ~here is no possi~ ty tha~ t~e boards w$11 mo~e relative ~o one another before they a~e engaged b~ t~e pickup e~ement~. These ~egions ~ the ~aak can thu~ be engaged durin~ the pre~ing operation ant pr~ox to opening of the prQSS, thereby precludi~g uncontrolled movement~ of the boards and enabling the cyclin~ time ~or production o~ the boards to be lncreased.
The processes o~ the invention can be carried out by simply pe~mitting lon~itudinal edge z~nes of the staak to pro~
~e~t beyond the platens and emboss~ng plate~ for engagement by alampin~ elem~n~s or by ~orming the platen3 and the emb~ssing plates with c~tout~, poc~ets or 4hamber~ into which the clampin~ elements can eng~ge e~en when the press ~ closed.
~or~ par~iculaxly, the me~hod o~ inven~ion can compris~
the steps of:
(a) ~orming a ~tack o~ a sandwi~h stru~ture of two laminates aont~ining a hardenabl~ synthetic re~ln, and a ~eparating laye~ bet~een the laminate~;
~0~ 3397 ~82~1 (b~ insert~n~ the ~ta~k bet~een two pres3 platen~ O~ an open ~ingle-level platen pres havlng e~Po~ing sur~ares juxtaposed with opposite faces o~ t~e s~ck and positi4ning tl~e ~t~ck in t~e press 50 ~hat at least ~lon~ one longitudin~l ed~e of ~he 6tacX at lea~t ~paced apart portions o~ the ~ta~:k remain free upon cl~sure of the pres~;
(a~ c:losing the press, ther~by compres~ing th~ stack between the sura~es, maintainin~ thB pres~ closed f~r a ~eriod of time ~ufficient to effec~ embossi~g ~ the op~osite fa~e~ and hardening of the laminates into boards, and thereupon opening the press;
(d) su~sequent ~ the c~osing of the pres~ and ~t least upon open~ng o~ ~he press, ~ripping the portions of the ~taak w~th engag~ng members of a pr~s3-discharging unit and, upon opening o~ the press, withdrawing the boards with the separating layer therebe~ween from the press; and (e) thereafte~ tri~ing at least the portionE; from th~
boards.
~he apparatus for carrying out the method can comprise:
a single-le~el platen press having two press pla~en~
~o~med with embossing ~ur~aces juxtaposable with t~ppo~ite ~aces of a stack of a sandw~ ch structure o2 two laminates containing a hardenable ~ynthe~i~ resin and a separatlng layer }: etween ~he laminates;
2 5 me~ns for ins~rtinq t~e stacJc be~w~en the embo~sing 6urface~ upon opening of the single-l~vel platen pre6s 60 that th~ e~bossin~ surfase~ are ~uxtaposed with tha opposi~e ~aces o~ the s~ack and the staçk i~ posi~ioned in the press 1~291 ~o that at leas~ along ~ne longituain~l e~ge oX th~3 ~ta~k at lea~t ~paced apaxt portion~ o~ the ~taclc remain free upon closure of the pres6; and ~ press-dl6char~ing uni~ provlded wit~ engaging members ~or gripping the ~ortions of the s~ack subsequent ~o th~
clo~ing of the press and at least upon openin~ of the press and, upon openlng of the pres~, with~rawing boards ~ormed by ¢ompre~sion of side ~ta~k between the ~urfaces and hardening of the lami~ates, with the separating layer ther~ betwe~n from the press.
Prefexably, the press platens a~e formed with cham~ering on their longitudinal ~ides into whi~h clamping elemen~g pas~
with the press to seize the ~tack before the p~e~s is opened.
Brie~ Desc~ ion Q~_the Drawina The above and ot~er ob~ec~s, feature6 ~d adv~n~age~ o~ my inven~ion will become more readily ~pparent from the following description, reference being made to the accompanying h~ghly diagxammatic drawing in which:
~ XG, 1 is a pla~ view showin~ two clo~ed pr~s pla~en~ o~
~0 ~ ~ingle level platen press is carryirlg out the method of th~
in~ention, to~ether with the pre~ scharging un~t;
FIG~ 2 i~ a view o~ a por~ion of the press taken generally along t~e line XI-II o~ FI~. 1;
FIG. 3 is a view simil~r to FX~ 1 illustrating another ~5 embodiment of the inventionî and FIG. 4 is a ~ross ~c~ional view alonq thQ line IV-IV
drawn to a l~rger ~cale, ;~049397 18~1 The platen ~res~ ~hown in the drawing compr~se~ a lower pres~ platen 1 and ~n upper pr~s~ platen 2 o~ a heated single pxess pl~ten, the hydra~lic mean~ for open~ng and closlng the platens ha~ing not been illustra~ed but being conven~ional in the art. ~IGS. 2 and 3 show the heating p~ssage~ 3 through which ~:~perhe~ted steam, for example, can be fed.
As can bo seen from FIGS. 2 and 4, moreover, assembled lami~tes 4, i.e. multilayer laminates o~ the type de~cribed, ~orming a sandwich str~ture ~ith a sep~rator 5, ~an con~titute a staok which ~ placed between the platen~ 1 and 2 and ~an be inserted into ~he press by a chargin~ device ~hich c~n be similar to the disaharging deYice described in gr~ater de~ail below. The press platens l and 2 are lined with embossing shee~s 5 shown to have an und~latin~ or corrugated pattern applying the decor pattern ~o ~he laminate board which is produced. The presses have been shown in ~IGS. 2 and 4 in t~e closed ~tA~e in whi~h the two lamlna~es 4 are pre~sed to f~m the de~or lamin~te board and receive the ~mbossing str~qture imparted by the embos~ing pla~es 5.
As ~ comparison of FIGS. ~ and 2 or the respective F~GS. 3 and 4 will show, the re3pecti~e ~tacks are ~o inser~ed into the single le~el pla~en pre~s tha~ longitudinal zone~ 7 remain fully e~po~ed along their entire lengt~ ~FI~S, 1 and 2) or are expo~ed w~thin ¢hambers 9 which can extend all along the pla~ens (~IGS. 3 and 4) or only a~ ~paced ~part locat~ons thPrealong. These zones 7 thus remain free or e~posed ~ven when the pres~ is closed so that they c:an be en~aged by ~he 493~
clamplng element~ 8 of ~he dischargin~ unit wh~ch ~a~ been represented qenerally at 10 in the everal ~gure~. Th~
di~chaxging unit can be moved in the longit~dinal direction to carry the ~tack out of the pre~s once it i5 f~lly opened ~nd, of course, with appropriate travel can be used as char~ing unit to bring a new stack in~o the pres~. A~ FIGS. ~ and 4 il~ustra~e, ~he clamp~ 8 can eng~ge the ~tac~ befor~ opening o~ the ~ingle level press 60 that uncontrolled movement of the lamlnate board ~ormed from the stack~ 4 a~ a result of air entering the pr~ss during the openi~g opera~ion, cannot occur.
Once the boards are withdrawn fr~m the press, they can be eparated from the layer 5 which can be compo~ed of sta~nless s~eel or other mate~ial (e.g. a synthetic re~in coating or foil) to whic~ the lamin~tes do not adhere, and the unpressed portion~ of the board, ¢o~responding to the ~S regions 7, may b~ trimmed from the board by th~ conventi~nal trimming proces~ utilizin~ co~ventional trim~ing ~aw~.
~ecause the stac~ can be engaged by the ~iakup deviaes of the dischar~e unit before the pres~ is f~lly opened or during lo the clo~ed condition of the pxe~s, beaause of the s~ack rem~ning exposed e~en whe~ the pre&~ i~ closed, for ~u~
en~a~ement, ~here is no possi~ ty tha~ t~e boards w$11 mo~e relative ~o one another before they a~e engaged b~ t~e pickup e~ement~. These ~egions ~ the ~aak can thu~ be engaged durin~ the pre~ing operation ant pr~ox to opening of the prQSS, thereby precludi~g uncontrolled movement~ of the boards and enabling the cyclin~ time ~or production o~ the boards to be lncreased.
The processes o~ the invention can be carried out by simply pe~mitting lon~itudinal edge z~nes of the staak to pro~
~e~t beyond the platens and emboss~ng plate~ for engagement by alampin~ elem~n~s or by ~orming the platen3 and the emb~ssing plates with c~tout~, poc~ets or 4hamber~ into which the clampin~ elements can eng~ge e~en when the press ~ closed.
~or~ par~iculaxly, the me~hod o~ inven~ion can compris~
the steps of:
(a) ~orming a ~tack o~ a sandwi~h stru~ture of two laminates aont~ining a hardenabl~ synthetic re~ln, and a ~eparating laye~ bet~een the laminate~;
~0~ 3397 ~82~1 (b~ insert~n~ the ~ta~k bet~een two pres3 platen~ O~ an open ~ingle-level platen pres havlng e~Po~ing sur~ares juxtaposed with opposite faces o~ t~e s~ck and positi4ning tl~e ~t~ck in t~e press 50 ~hat at least ~lon~ one longitudin~l ed~e of ~he 6tacX at lea~t ~paced apart portions o~ the ~ta~:k remain free upon cl~sure of the pres~;
(a~ c:losing the press, ther~by compres~ing th~ stack between the sura~es, maintainin~ thB pres~ closed f~r a ~eriod of time ~ufficient to effec~ embossi~g ~ the op~osite fa~e~ and hardening of the laminates into boards, and thereupon opening the press;
(d) su~sequent ~ the c~osing of the pres~ and ~t least upon open~ng o~ ~he press, ~ripping the portions of the ~taak w~th engag~ng members of a pr~s3-discharging unit and, upon opening o~ the press, withdrawing the boards with the separating layer therebe~ween from the press; and (e) thereafte~ tri~ing at least the portionE; from th~
boards.
~he apparatus for carrying out the method can comprise:
a single-le~el platen press having two press pla~en~
~o~med with embossing ~ur~aces juxtaposable with t~ppo~ite ~aces of a stack of a sandw~ ch structure o2 two laminates containing a hardenable ~ynthe~i~ resin and a separatlng layer }: etween ~he laminates;
2 5 me~ns for ins~rtinq t~e stacJc be~w~en the embo~sing 6urface~ upon opening of the single-l~vel platen pre6s 60 that th~ e~bossin~ surfase~ are ~uxtaposed with tha opposi~e ~aces o~ the s~ack and the staçk i~ posi~ioned in the press 1~291 ~o that at leas~ along ~ne longituain~l e~ge oX th~3 ~ta~k at lea~t ~paced apaxt portion~ o~ the ~taclc remain free upon closure of the pres6; and ~ press-dl6char~ing uni~ provlded wit~ engaging members ~or gripping the ~ortions of the s~ack subsequent ~o th~
clo~ing of the press and at least upon openin~ of the press and, upon openlng of the pres~, with~rawing boards ~ormed by ¢ompre~sion of side ~ta~k between the ~urfaces and hardening of the lami~ates, with the separating layer ther~ betwe~n from the press.
Prefexably, the press platens a~e formed with cham~ering on their longitudinal ~ides into whi~h clamping elemen~g pas~
with the press to seize the ~tack before the p~e~s is opened.
Brie~ Desc~ ion Q~_the Drawina The above and ot~er ob~ec~s, feature6 ~d adv~n~age~ o~ my inven~ion will become more readily ~pparent from the following description, reference being made to the accompanying h~ghly diagxammatic drawing in which:
~ XG, 1 is a pla~ view showin~ two clo~ed pr~s pla~en~ o~
~0 ~ ~ingle level platen press is carryirlg out the method of th~
in~ention, to~ether with the pre~ scharging un~t;
FIG~ 2 i~ a view o~ a por~ion of the press taken generally along t~e line XI-II o~ FI~. 1;
FIG. 3 is a view simil~r to FX~ 1 illustrating another ~5 embodiment of the inventionî and FIG. 4 is a ~ross ~c~ional view alonq thQ line IV-IV
drawn to a l~rger ~cale, ;~049397 18~1 The platen ~res~ ~hown in the drawing compr~se~ a lower pres~ platen 1 and ~n upper pr~s~ platen 2 o~ a heated single pxess pl~ten, the hydra~lic mean~ for open~ng and closlng the platens ha~ing not been illustra~ed but being conven~ional in the art. ~IGS. 2 and 3 show the heating p~ssage~ 3 through which ~:~perhe~ted steam, for example, can be fed.
As can bo seen from FIGS. 2 and 4, moreover, assembled lami~tes 4, i.e. multilayer laminates o~ the type de~cribed, ~orming a sandwich str~ture ~ith a sep~rator 5, ~an con~titute a staok which ~ placed between the platen~ 1 and 2 and ~an be inserted into ~he press by a chargin~ device ~hich c~n be similar to the disaharging deYice described in gr~ater de~ail below. The press platens l and 2 are lined with embossing shee~s 5 shown to have an und~latin~ or corrugated pattern applying the decor pattern ~o ~he laminate board which is produced. The presses have been shown in ~IGS. 2 and 4 in t~e closed ~tA~e in whi~h the two lamlna~es 4 are pre~sed to f~m the de~or lamin~te board and receive the ~mbossing str~qture imparted by the embos~ing pla~es 5.
As ~ comparison of FIGS. ~ and 2 or the respective F~GS. 3 and 4 will show, the re3pecti~e ~tacks are ~o inser~ed into the single le~el pla~en pre~s tha~ longitudinal zone~ 7 remain fully e~po~ed along their entire lengt~ ~FI~S, 1 and 2) or are expo~ed w~thin ¢hambers 9 which can extend all along the pla~ens (~IGS. 3 and 4) or only a~ ~paced ~part locat~ons thPrealong. These zones 7 thus remain free or e~posed ~ven when the pres~ is closed so that they c:an be en~aged by ~he 493~
clamplng element~ 8 of ~he dischargin~ unit wh~ch ~a~ been represented qenerally at 10 in the everal ~gure~. Th~
di~chaxging unit can be moved in the longit~dinal direction to carry the ~tack out of the pre~s once it i5 f~lly opened ~nd, of course, with appropriate travel can be used as char~ing unit to bring a new stack in~o the pres~. A~ FIGS. ~ and 4 il~ustra~e, ~he clamp~ 8 can eng~ge the ~tac~ befor~ opening o~ the ~ingle level press 60 that uncontrolled movement of the lamlnate board ~ormed from the stack~ 4 a~ a result of air entering the pr~ss during the openi~g opera~ion, cannot occur.
Once the boards are withdrawn fr~m the press, they can be eparated from the layer 5 which can be compo~ed of sta~nless s~eel or other mate~ial (e.g. a synthetic re~in coating or foil) to whic~ the lamin~tes do not adhere, and the unpressed portion~ of the board, ¢o~responding to the ~S regions 7, may b~ trimmed from the board by th~ conventi~nal trimming proces~ utilizin~ co~ventional trim~ing ~aw~.
Claims (9)
1. A method of making embossed laminate boards, comprising the steps of:
(a) forming a stack of a sandwich structure of two laminates containing a hardenable synthetic resin, and a separating layer between said laminates:
(b) inserting said stack between two press platens of an open single-level platen press having embossing surfaces juxtaposed with opposite faces of said stack and positioning said stack in s id press so that at least along one longitudinal edge of said stack at least spaced apart portions of said stack remain free upon closure of said press;
(c) closing said press, thereby compressing said stack between said surfaces, maintaining said press closed for a period of time sufficient to effect embossing of said opposite faces and hardening of said laminates into boards, and thereupon opening said press;
(d) subsequent to the closing of said press and at least upon opening of said press gripping said portions of said stack with engaging members of a press-discharging unit and, upon opening of said press, withdrawing said boards with said separating layer therebetween from said d press; and (e) thereafter trimming at least said portions from said boards.
(a) forming a stack of a sandwich structure of two laminates containing a hardenable synthetic resin, and a separating layer between said laminates:
(b) inserting said stack between two press platens of an open single-level platen press having embossing surfaces juxtaposed with opposite faces of said stack and positioning said stack in s id press so that at least along one longitudinal edge of said stack at least spaced apart portions of said stack remain free upon closure of said press;
(c) closing said press, thereby compressing said stack between said surfaces, maintaining said press closed for a period of time sufficient to effect embossing of said opposite faces and hardening of said laminates into boards, and thereupon opening said press;
(d) subsequent to the closing of said press and at least upon opening of said press gripping said portions of said stack with engaging members of a press-discharging unit and, upon opening of said press, withdrawing said boards with said separating layer therebetween from said d press; and (e) thereafter trimming at least said portions from said boards.
2. The method defined in claim 1 wherein said stack is inserted into said press in step b so that all of said longitudinal edge remains exposed upon closure of said press for engagement by said engaging members.
3. The method defined in claim 1 wherein said press platens are chambered to leave said spaced apart process of said stack exposed upon closure of said press.
4. The method defined in claim 1 wherein said stack is inserted into said press by engagement of said stack at an opposite longitudinal edge thereof by engaging members of a stack-inserting unit and at least a portion of said opposite longitudinal edge remains free from closure of said press.
5. The method defined in claim 1 wherein at least spaced apart portions of said stack remain free upon closure of said press along opposite longitudinal edges of said stack.
6. An apparatus for making embossed laminate boards, comprising:
a single-level platen press having two press platens formed with embossing surfaces juxtaposable with opposite faces of a stack of a sandwich structure of two laminates containing a hardenable synthetic resin and a separating layer between said laminates;
means for inserting said stack between said embossing ditgsvrd upon opening of said single-level platen press so that said embossing surfaces are juxtaposed with said opposite faces of said stack and said stack is positioned in said press so that at least along one longitudinal edge of said stack at least spaced apart portions of said stack remain free upon closure of said press; and a press-discharging unit provided with engaging members for gripping said portions of said stack subsequent to the closing of said press and at least upon opening of said press and, upon opening of said press, withdrawing boards formed by compression of side stack between said surfaces and hardening of said laminates, with said separating layer there between from said press.
a single-level platen press having two press platens formed with embossing surfaces juxtaposable with opposite faces of a stack of a sandwich structure of two laminates containing a hardenable synthetic resin and a separating layer between said laminates;
means for inserting said stack between said embossing ditgsvrd upon opening of said single-level platen press so that said embossing surfaces are juxtaposed with said opposite faces of said stack and said stack is positioned in said press so that at least along one longitudinal edge of said stack at least spaced apart portions of said stack remain free upon closure of said press; and a press-discharging unit provided with engaging members for gripping said portions of said stack subsequent to the closing of said press and at least upon opening of said press and, upon opening of said press, withdrawing boards formed by compression of side stack between said surfaces and hardening of said laminates, with said separating layer there between from said press.
7. the apparatus defined in claim 6 wherein said press platens are formed with chambers along longitudinal edges thereof leaving said spaced apart portions free upon closure of said press.
8. The apparatus defined in claim 7 wherein said elements are clamps receivable in said chambers.
9. the apparatus defined in claim 8 wherein said surfaces are formed on replaceable embossing plates receiveable in said press and satisfied to be disposed along said platens.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP4026046.1 | 1990-08-17 | ||
DE4026046A DE4026046A1 (en) | 1990-08-17 | 1990-08-17 | Embossing decorative patterns on panels of synthetic resin - involves grippers attached to sliding rails to move panels in and out of press |
Publications (1)
Publication Number | Publication Date |
---|---|
CA2049397A1 true CA2049397A1 (en) | 1992-02-18 |
Family
ID=6412411
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002049397A Abandoned CA2049397A1 (en) | 1990-08-17 | 1991-08-16 | Method of and apparatus for the production of embossed laminate board |
Country Status (5)
Country | Link |
---|---|
JP (1) | JPH0659660B2 (en) |
CA (1) | CA2049397A1 (en) |
DE (1) | DE4026046A1 (en) |
FI (1) | FI913889A (en) |
IT (1) | IT1251172B (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102848438A (en) * | 2012-09-14 | 2013-01-02 | 青岛国森机械有限公司 | Novel lockset for pressing bamboo-wood restructuring material |
CN104093552A (en) * | 2011-11-29 | 2014-10-08 | 弗劳恩霍夫应用研究促进协会 | Method for producing structured optical components |
US9162369B2 (en) | 2008-10-21 | 2015-10-20 | Andre Verville | Embossed monolayer particleboards and methods of preparation thereof |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4112747C2 (en) * | 1991-04-19 | 1998-04-16 | Siempelkamp Gmbh & Co | System for emptying a plate press in the course of the production of laminate plates |
DE102007012496B3 (en) * | 2007-03-15 | 2008-11-06 | Iac Group Gmbh | Platen press for molded parts |
DE102010009528B4 (en) | 2010-02-26 | 2015-04-30 | Ifc Composite Gmbh | Leaf spring made of a fiber composite material with integrated bearing eyes and method for producing the same |
DE102012016934B4 (en) * | 2012-08-27 | 2015-12-03 | Ifc Composite Gmbh | Method for the simultaneous production of a plurality of leaf springs made of a fiber composite material |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1911764A1 (en) * | 1969-03-07 | 1970-09-17 | Siempelkamp Gmbh & Co | Rapid removal of (laminated) moulded panels (particle - board) from a press |
DE2217396C3 (en) * | 1972-04-11 | 1975-07-17 | G. Siempelkamp & Co, 4150 Krefeld | Device for loading and unloading plate presses |
-
1990
- 1990-08-17 DE DE4026046A patent/DE4026046A1/en not_active Withdrawn
-
1991
- 1991-08-12 IT ITMI912248A patent/IT1251172B/en active IP Right Grant
- 1991-08-16 JP JP3205769A patent/JPH0659660B2/en not_active Expired - Lifetime
- 1991-08-16 FI FI913889A patent/FI913889A/en not_active Application Discontinuation
- 1991-08-16 CA CA002049397A patent/CA2049397A1/en not_active Abandoned
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9162369B2 (en) | 2008-10-21 | 2015-10-20 | Andre Verville | Embossed monolayer particleboards and methods of preparation thereof |
CN104093552A (en) * | 2011-11-29 | 2014-10-08 | 弗劳恩霍夫应用研究促进协会 | Method for producing structured optical components |
CN104093552B (en) * | 2011-11-29 | 2018-03-13 | 弗劳恩霍夫应用研究促进协会 | Method for producing Structured optical part |
CN102848438A (en) * | 2012-09-14 | 2013-01-02 | 青岛国森机械有限公司 | Novel lockset for pressing bamboo-wood restructuring material |
Also Published As
Publication number | Publication date |
---|---|
DE4026046A1 (en) | 1992-02-20 |
JPH04226721A (en) | 1992-08-17 |
JPH0659660B2 (en) | 1994-08-10 |
IT1251172B (en) | 1995-05-04 |
FI913889A0 (en) | 1991-08-16 |
ITMI912248A0 (en) | 1991-08-12 |
FI913889A (en) | 1992-02-18 |
ITMI912248A1 (en) | 1992-02-18 |
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