DK147173B - PROCEDURE FOR THE PREPARATION OF A POLYGONAL FINDER STAND FOR HEAT PRESSURE - Google Patents
PROCEDURE FOR THE PREPARATION OF A POLYGONAL FINDER STAND FOR HEAT PRESSURE Download PDFInfo
- Publication number
- DK147173B DK147173B DK092780AA DK92780A DK147173B DK 147173 B DK147173 B DK 147173B DK 092780A A DK092780A A DK 092780AA DK 92780 A DK92780 A DK 92780A DK 147173 B DK147173 B DK 147173B
- Authority
- DK
- Denmark
- Prior art keywords
- veneer
- polygonal
- core
- layer
- edge
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 12
- 238000003825 pressing Methods 0.000 claims description 13
- 230000007704 transition Effects 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000011093 chipboard Substances 0.000 claims description 2
- 238000007731 hot pressing Methods 0.000 claims description 2
- 239000010410 layer Substances 0.000 claims 6
- 238000004026 adhesive bonding Methods 0.000 claims 1
- 239000011247 coating layer Substances 0.000 claims 1
- 238000005034 decoration Methods 0.000 claims 1
- 238000000465 moulding Methods 0.000 description 3
- 210000003462 vein Anatomy 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000002313 adhesive film Substances 0.000 description 2
- 230000001427 coherent effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27D—WORKING VENEER OR PLYWOOD
- B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
- B27D1/04—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefrom; Plywood sheets
- B27D1/08—Manufacture of shaped articles; Presses specially designed therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27D—WORKING VENEER OR PLYWOOD
- B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
- B27D1/04—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefrom; Plywood sheets
- B27D1/08—Manufacture of shaped articles; Presses specially designed therefor
- B27D1/083—Presses specially designed for making the manufacture of shaped plywood articles
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Veneer Processing And Manufacture Of Plywood (AREA)
- Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
Description
i 147173in 147173
Opfindelsen angår en fremgangsmåde ved fremstilling af en af et eller flere sammenlimede finerlag bestående, polygonal finergenstand ved varmpresning, hvilken finergenstand har et polygonalt midter-5 felt, som gennem en kraftigt profileret overgangszone er forbundet med en helt eller hovedsagelig plan, rundtgående randzone, og hvor det i den færdige genstand ydre finerlags randzone består af randfelter, som hver strækker sig langs en side af midterfeltet 10 med sine årer forløbende i retning af midterfeltets tilstødende side.BACKGROUND OF THE INVENTION 1. Field of the Invention The invention relates to a method of producing one or more bonded veneer layers, polygonal veneer by hot pressing, which veneer has a polygonal center field which is connected, through a strongly profiled transition zone, to a completely or substantially planar, circumferential border zone, and wherein, in the finished object, the outer zone of the outer veneer layer consists of edge fields, each extending along one side of the middle field 10 with its veins extending in the direction of the adjacent side of the middle field.
U.S.A. patentskrift nr. 1 876 330 beskriver fremstilling af bordplader og lignende genstande ved en fremgangsmåde, hvor et plant midterfelt anbringes 15 i bunden af et formhulrum, og hvor flere randfelter eller -strimler indlægges langs omkredsen af midterfeltet, hvor de understøttes af skinner, som danner omkredsen af formhulrummet. Derefter anbringes en præfabrikeret kerne oven på midterfeltet med et ind-20 skudt klæbemateriale, som aktiveres ved tilførsel af varme og tryk, hvorved midterfeltet og randfelterne fastklæbes til kernen.U.S.A. U.S. Pat. No. 1,876,330 discloses the manufacture of countertops and similar articles by a method wherein a flat center panel is placed at the bottom of a mold cavity and wherein multiple rim panels or strips are inserted along the circumference of the center panel, supported by rails forming the circumference of the mold cavity. Then, a prefabricated core is placed on top of the center panel with an inserted adhesive material which is activated by the application of heat and pressure, thereby adhering the center panel and the rim panels to the core.
Nærværende opfindelse tager sigte på at angive en fremgangsmåde af den indledningsvis nævnte art, 25 som er enklere og billigere, og som kan benyttes til fremstilling af genstande, der udelukkende består af et eller flere finerlag uden nogen bærende kerne, der indgår som en integrerende del af genstanden.SUMMARY OF THE INVENTION The present invention aims to provide a process of the kind mentioned above, which is simpler and less expensive and which can be used to make articles consisting solely of one or more veneer layers without any supporting core forming an integral part. of the object.
Med henblik herpå er fremgangsmåden ifølge op-30 findelsen ejendommelig ved, at det nævnte ydre finerlag fremstilles ved kantlimning af plane randfelter til et plant midterfelt i dette felts plan, og at randfelterne, der i den færdige genstand danner overgangs- og randzonen, udføres med sådanne konturer, at 35 der mellem hvert par af randfelter, som mødes i et 147173 2 hjørne af midterfeltet, dannes en spalte bestående af et kileformet afsnit, som strækker sig gennem den færdige genstands overgangszone med sin spids beliggende ved midterfeltets hjørne, og et tilstødende af-5 snit, som strækker sig gennem den færdige genstands randzone ud til dennes periferi og afgrænses af modstående parallelle kanter.To this end, the method according to the invention is characterized in that said outer veneer layer is produced by edge bonding of planar edge fields to a planar middle field in the plane of this field, and that the edge fields forming in the finished object the transition and edge zone are carried out with such contours that between each pair of edge fields meeting in a corner of the middle field, a gap is formed consisting of a wedge-shaped section extending through the transition zone of the finished object with its tip located at the corner of the middle field, and an adjacent one. cross-sections extending through the peripheral zone of the finished article to its periphery and bounded by opposite parallel edges.
Det vil forstås, at man ved indledningsvis at sammenføje midterfeltet og randfelterne til et sam-10 menhængende plant fineremne opnår en betydelig forenkling af håndteringen af de enkelte komponenter, herunder deres placering og korrekte lokalisering i forhold til det anvendte presseværktøj. Den i og for sig kendte orientering af årerne i de enkelte rand-15 felter sikrer, at selv genstande, hvis overgangszone indbefatter skarpkantede knæk og/eller områder med meget lille krumningsradius, kan fremstilles uden risiko for, at der ved presseoperationen opstår revner i fineren. Det vil også ses, at presningen af gen-20 standen ud fra et enkelt, sammenhængende fineremne eliminerer behovet for inkorporering af en kerne i genstanden, og som følge heraf er det muligt at fremstille genstande af mange forskellige udformninger, som ikke kan fremstilles ved den fra U.S.A.-patent-25 skriftet kendte metode.It will be appreciated that, by initially joining the center and rim fields to a coherent flat veneer, a significant simplification of the handling of the individual components, including their location and correct location relative to the pressing tool used, is achieved. The known orientation of the veins in the individual edge-15 fields ensures that even objects whose transition zone includes sharp-edged cracks and / or areas with very small radius of curvature can be produced without the risk of cracking in the veneer during the pressing operation. . It will also be seen that the pressing of the article from a single coherent veneer eliminates the need for incorporation of a core into the article and, as a result, it is possible to produce articles of many different designs which cannot be manufactured by it. from the U.S. Patent 25 known method.
Fra britisk patentskrift nr. 485 071 kendes en fremgangsmåde til fremstilling af bakker og lignende genstande af finer ud fra et enkelt fineremne, hvori der ved hvert hjørne bortskæres et større antal kile-30 formede områder før presningen af emnet. Denne kendte fremgangsmåde er kun anvendelig til fremstilling af genstande med relativt blødt afrundede overgange fra midterfeltet til genstandens kanter, og selv i så 3 147173 fald kan man næppe fuldstændig undgå dannelse af revner på steder, hvor fineren bøjes på tværs af årernes forløb.British Patent Specification No. 485,071 discloses a method for making trays and similar articles of veneer from a single veneer blank, wherein at each corner a greater number of wedge-shaped areas are cut before pressing the workpiece. This known method is only applicable to the manufacture of articles with relatively soft rounded transitions from the center field to the edges of the article, and even in such cases, cracks can hardly be completely avoided in places where the veneer bends over the years.
Opfindelsen forklares i det følgende nærmere 5 under henvisning til den skematiske tegning, på hvilken fig. 1 er et planbillede af en skabslåge udformet som sandwichelement med et dæklag fremstillet ved en fremgangsmåde ifølge opfindelsen, 10 fig. 2 et snit i større skala efter linien II-II i fig. 1, fig. 3 et planbillede i cirka samme skala visende det yderste finerlag i sandwichelementets dæklag før presningen af dæklaget, og 15 fig. 4 et udsnit i endnu større skala gennem en del af et presseværktøj, som kan anvendes til omformning af dæklagets overgangszone.The invention will now be explained in greater detail with reference to the schematic drawing, in which: FIG. 1 is a plan view of a cabinet door configured as a sandwich element with a cover layer made by a method according to the invention; FIG. 2 shows a section on a larger scale along line II-II of FIG. 1, FIG. 3 is a plan view of approximately the same scale showing the outermost veneer layer of the sandwich element cover layer prior to pressing the cover layer; and FIG. 4 shows a section on an even larger scale through a part of a pressing tool which can be used to reshape the transition zone of the cover layer.
I fig. 1 og 2 er anskueliggjort et sandwichelement 1, som består af en kerne 2, kantlister 3 20 langs kernens sider og to finerdæklag 4 og 5, som ligger mod og er bundet til de modstående overflader af kernen 2 og til kantlisterne 3, således at de når helt ud til elementets kanter. Kernen 2 kan bestå af opskummet plast med eller uden fyldmateriale, 25 eller den kan være fremstillet som en spånplade. På tegningen er elementet 1 vist med et profileret dæklag 4 og et plant dæklag 5, men i givet fald kunne begge dæklag være profileret med samme eller forskelligt tværsnitsprofil.In FIG. 1 and 2, there is illustrated a sandwich element 1, which consists of a core 2, edge strips 3 20 along the sides of the core and two veneer sheets 4 and 5, which are against and bonded to the opposite surfaces of the core 2 and to the edge strips 3, so that they reaching all the way to the edges of the element. The core 2 may consist of foamed plastic with or without filler, or it may be manufactured as a chipboard. In the drawing, the element 1 is shown with a profiled cover layer 4 and a flat cover layer 5, but if so, both cover layers could be profiled with the same or different cross-sectional profile.
30 Som vist i fig. 4 er dæklaget 4 sammensat af tre sammenlimede finerlag, nemlig et lag 6 af ædelfiner, som i det færdige sandwichelement vender udad, samt to såkaldte spærrelag 7 og 8, der kan være fremstillet af billigere finer. Af fig. 1 og 3 frem-35 går endvidere, at det plane finerlag 6 er sammenfø- 4 U7173 jet af et plant midterfelt 9 og plane randfelter 10 og 11, som er kantlimet til "henholdsvis de lange og de korte sider af midterfeltet. Randfelteme udskæres således af fineren, at årerne i hvert felt 5 forløber stort set i retning af den tilstødende kant af midterfeltet 9 og dermed af det færdige dæklag 4's kant, hvorved de tilsvarende randfelter i det færdige sandwichelements dæklag, som i fig. 1 er betegnet med henholdsvis 10' og 11’, illuderer som 10 massive kantlister.30 As shown in FIG. 4, the cover layer 4 is composed of three glued veneer layers, namely a layer 6 of noble veneer facing outwards in the finished sandwich element, as well as two so-called barrier layers 7 and 8, which can be made of cheaper veneer. In FIG. 1 and 3 further show that the planar veneer layer 6 is joined by a planar middle panel 9 and planar rim panels 10 and 11 which are edge-glued to "the long and short sides of the middle panel, respectively. of the veneer, that the veins in each field 5 extend substantially towards the adjacent edge of the middle field 9 and thus of the edge of the finished cover layer 4, whereby the corresponding edge fields in the cover sandwich layer, as in Figure 1 are denoted respectively 10 'and 11', illus- trating like 10 massive edge moldings.
Det i fig. 4 skematisk viste presseværktøj til formpresning af dæklaget 4 omfatter et underværktøj 12 og et overværktøj 13, som begge indeholder ikke viste organer til opvarmning af værktøjet. De to 15 værktøjsparter er monteret på hver sin opspændingsplan, henholdsvis 14 og 15. De mod hinanden vendende presseflader af værktøjerne 12 og 13 er profileret svarende til den ønskede facon af det færdige dæklag 4 med en plan rundtgående randzone 16 omfattende 20 felterne 10' og 11', det svagt profilerede midterfelt 91 og en kraftigt profileret overgangszone 17 (se især fig. 2) mellem randzonen og midterfeltet.The FIG. 4 schematically illustrated pressing tool for molding the cover layer 4 comprises a sub-tool 12 and a top tool 13, both of which do not have shown means for heating the tool. The two 15 tool parts are mounted on each clamping plane, respectively 14 and 15. The facing pressing faces of the tools 12 and 13 are profiled corresponding to the desired shape of the finished cover layer 4 with a flat circumferential edge zone 16 comprising the 20 fields 10 'and 11 ', the low-profile center field 91 and a strongly-profiled transition zone 17 (see, in particular, Figure 2) between the rim zone and the middle field.
Af fig. 2 og 4 vil det ses, at finermaterialet i overgangszonen 17 ved presningen udsættes for en 25 kraftig strækning, og strækningen ledsages af en i retning mod midterfeltet 9 indadgående forskydning af fineren i randfelterne 10 og 11. For at muliggøre denne indtrækning er randfelterne 10 og 11 i det oprindelige, plane finerlag 6 udformet som vist i 30 fig. 3. Dette indebærer, at der ved hvert hjørne af det plane finerlag findes en spalte, som fra omkredsen af finerlaget strækker sig indefter med parallelle kanter i et retliniet afsnit 18 stort set til det sted, som i det færdigpressede dæklag udgør et 35 ydre hjørne af overgangszonen 17. Herfra fortsætter 5 147173 spalten med et kileformet afsnit 19, der slutter i en spids ved det indre hjørne af overgangszonen 17, dvs. ved hjørnet af midterfeltet 9.In FIG. 2 and 4, it will be seen that, during pressing, the veneer material in the transition zone 17 is subjected to a strong stretch and the stretch is accompanied by an inward displacement of the veneer in the edge panels 10 and 11. In order to enable this penetration, the edge panels 10 and 11 of the original planar veneer layer 6 formed as shown in FIG. 3. This implies that at each corner of the planar veneer layer there is a gap extending from the circumference of the veneer layer inwardly with parallel edges in a rectilinear section 18 substantially to the place which in the finished compression layer constitutes an outer corner of the transition zone 17. From here, the gap proceeds with a wedge-shaped section 19 ending in a tip at the inner corner of the transition zone 17, ie. at the corner of the center square 9.
Som vist i fig. 4 er den del af overværktøjet 5 13, som former den stærkt profilerede overgangszone 17 samt det tilstødende, svagere profilerede område af dæklagets midterfelt 9', udført som en særskilt, rammelignende del sammensat af lister 20 forløbende parallelt med emnets kanter og styret således i for-10 hold til resten af overværktøjet, at de kan bevæge sig mod og bort fra underværktøjet. Rammen er fjederbelastet i retning mod underværktøjet ved hjælp af skematisk viste trykfjedre 21, som virker mellem rammen og opspændingsplanen 15.As shown in FIG. 4, the part of the upper tool 5 13 which forms the highly profiled transition zone 17 as well as the adjacent, less profiled area of the middle layer 9 'of the cover layer, is made as a separate, frame-like part composed of moldings 20 extending parallel to the edges of the workpiece and thus guided in front of the workpiece. -10 hold to the rest of the top tool that they can move toward and away from the sub tool. The frame is spring loaded in the direction of the sub-tool by means of schematically shown compression springs 21 which act between the frame and the clamping plane 15.
15 Til fremstilling af det profilerede dæklag 4 indlægges de tre finerlag 6, 7 og 8 i plan tilstand sammen med indskudte, ikke viste limfilm, som aktiveres ved pressetrykket og -temperaturen, i det åbne presseværktøj, således at sammenlimningen og facon-20 presningen sker i samme operation. De indskudte limfilm kunne erstattes af en påføring af lim på fineroverfladerne. I begge tilfælde er det hensigtsmæssigt at påføre en tynd hinde af et hårdt og sejt materiale på den udadvendende overflade af yderlaget 6 for at 25 sikre en glat overflade af det færdigpressede dæklag.15 For the production of the profiled cover layer 4, the three veneer layers 6, 7 and 8 are inserted in a flat state together with inserted, not shown adhesive films, which are activated at the pressing pressure and temperature, in the open pressing tool, so that the bonding and the shape pressing are effected. in the same operation. The inserted adhesive films could be replaced by an application of adhesive to the veneer surfaces. In either case, it is convenient to apply a thin film of a hard and tough material to the outwardly facing surface of the outer layer 6 to ensure a smooth surface of the compressed cover layer.
For at sikre at spalterne 18, 19 ved hjørnerne af laget 6 placeres nøjagtigt i forhold til de profilerede dele af værktøjerne 12 og 13, er der til underværktøjets plan 14 fastgjort opragende anslag 30 22 til anlæg mod de nøjagtigt udskårne finerlags kanter. For opnåelse af et godt resultat er det endvidere vigtigt, at de to værktøjsparter 12 og 13 bevæges mod hinanden med relativt lav hastighed, så-In order to ensure that the slots 18, 19 at the corners of the layer 6 are positioned exactly in relation to the profiled parts of the tools 12 and 13, projecting stops 30 22 for the abutment plane 14 are fixed to abut the edges of the precisely cut veneer layers. Furthermore, in order to achieve a good result, it is important that the two tool parts 12 and 13 move towards each other at relatively low speed, so that
Claims (3)
Priority Applications (12)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK92780A DK147173C (en) | 1980-03-04 | 1980-03-04 | PROCEDURE FOR THE PREPARATION OF A POLYGONAL FINDER STAND FOR HEAT PRESSURE |
| IE810382A IE810382L (en) | 1980-03-04 | 1981-02-25 | Making a veneer article by hot pressing |
| EP81900660A EP0047284B1 (en) | 1980-03-04 | 1981-03-02 | A method of manufacturing a veneer article by hot pressing |
| FI813450A FI813450L (en) | 1980-03-04 | 1981-03-02 | FOERFARANDE FOER TILLVERKNING AV FANERSKIVSPRODUKT GENOM VARMPRESSNING OCH PRESSVERKTYG FOER GENOMFOERANDE AV FOERFARANDET |
| DE8181900660T DE3167537D1 (en) | 1980-03-04 | 1981-03-02 | A method of manufacturing a veneer article by hot pressing |
| PCT/DK1981/000025 WO1981002541A1 (en) | 1980-03-04 | 1981-03-02 | A method of manufacturing a veneer article by hot pressing,and a press tool for carrying out the method |
| AT81900660T ATE10598T1 (en) | 1980-03-04 | 1981-03-02 | PROCESS FOR MAKING A VENEER ARTICLE BY HOT PRESSING. |
| AU67872/81A AU6787281A (en) | 1980-03-04 | 1981-03-02 | A method of manufacturing a veneer article by hot pressing, and a press tool for carrying out the method |
| BE0/203991A BE887769A (en) | 1980-03-04 | 1981-03-03 | PROCESS AND DEVICE FOR PREPARING A PLYWOOD AND PRODUCT THUS OBTAINED. |
| ES500067A ES8207016A1 (en) | 1980-03-04 | 1981-03-04 | A method of manufacturing a veneer article by hot pressing. |
| IT20118/81A IT1169231B (en) | 1980-03-04 | 1981-03-04 | PROCESS FOR MANUFACTURING AN ARTICLE OF VENEER BY HOT COMPRESSION, AND PRESS TOOL TO IMPLEMENT THE PROCEDURE |
| NO813675A NO151692C (en) | 1980-03-04 | 1981-10-30 | PROCEDURE FOR THE PREPARATION OF A FINDER OBJECTIVE BY HEAT PRESSURE. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK92780 | 1980-03-04 | ||
| DK92780A DK147173C (en) | 1980-03-04 | 1980-03-04 | PROCEDURE FOR THE PREPARATION OF A POLYGONAL FINDER STAND FOR HEAT PRESSURE |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DK92780A DK92780A (en) | 1981-09-05 |
| DK147173B true DK147173B (en) | 1984-05-07 |
| DK147173C DK147173C (en) | 1984-11-05 |
Family
ID=8099103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK92780A DK147173C (en) | 1980-03-04 | 1980-03-04 | PROCEDURE FOR THE PREPARATION OF A POLYGONAL FINDER STAND FOR HEAT PRESSURE |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP0047284B1 (en) |
| BE (1) | BE887769A (en) |
| DK (1) | DK147173C (en) |
| ES (1) | ES8207016A1 (en) |
| IE (1) | IE810382L (en) |
| IT (1) | IT1169231B (en) |
| NO (1) | NO151692C (en) |
| WO (1) | WO1981002541A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08267592A (en) * | 1995-03-31 | 1996-10-15 | Sintokogio Ltd | Decorative element bonding apparatus |
| NO965205A (en) * | 1996-12-05 | 1997-09-22 | Fredrik Torsteinsen | Laminated article and mold for making a laminated article |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE112558C (en) * | ||||
| US1700391A (en) * | 1925-06-02 | 1929-01-29 | United Piano Corp | Sounding-board press |
| GB293248A (en) * | 1927-10-31 | 1928-07-05 | Christian Woellmer | Process for the production of articles of furniture having surfaces curved in more than one direction |
| US1876330A (en) * | 1932-01-29 | 1932-09-06 | Emil C Loetscher | Method of molding table tops and the like |
| GB485071A (en) * | 1937-08-06 | 1938-05-13 | Eric Winston Barlow | Improvements in and relating to the veneering of wood and the like |
| GB545489A (en) * | 1940-10-22 | 1942-05-28 | Arthur Cyril Merron | Compound sheet materials and objects produced therefrom |
| GB582478A (en) * | 1946-02-01 | 1946-11-18 | Marcelle Jeanne Lyon | Improvements in and relating to the making of plywood and like articles |
| US2640517A (en) * | 1950-11-13 | 1953-06-02 | Mello Ruben De | Apparatus for manufacture of corrugated plywood |
| GB840640A (en) * | 1957-07-19 | 1960-07-06 | Dolphin & Company Ltd | Improvements relating to the manufacture of laminated articles |
| US3066725A (en) * | 1958-06-12 | 1962-12-04 | Gertrude M Schweitzer | Apparatus for prefabricating coving |
| FR1358646A (en) * | 1963-03-08 | 1964-04-17 | Manufacturing process of hollow body and hollow body thus obtained |
-
1980
- 1980-03-04 DK DK92780A patent/DK147173C/en not_active IP Right Cessation
-
1981
- 1981-02-25 IE IE810382A patent/IE810382L/en unknown
- 1981-03-02 WO PCT/DK1981/000025 patent/WO1981002541A1/en active IP Right Grant
- 1981-03-02 EP EP81900660A patent/EP0047284B1/en not_active Expired
- 1981-03-03 BE BE0/203991A patent/BE887769A/en not_active IP Right Cessation
- 1981-03-04 IT IT20118/81A patent/IT1169231B/en active
- 1981-03-04 ES ES500067A patent/ES8207016A1/en not_active Expired
- 1981-10-30 NO NO813675A patent/NO151692C/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| NO151692C (en) | 1985-05-22 |
| EP0047284A1 (en) | 1982-03-17 |
| ES500067A0 (en) | 1982-09-01 |
| NO151692B (en) | 1985-02-11 |
| IT8120118A0 (en) | 1981-03-04 |
| BE887769A (en) | 1981-09-03 |
| EP0047284B1 (en) | 1984-12-05 |
| ES8207016A1 (en) | 1982-09-01 |
| NO813675L (en) | 1981-10-30 |
| DK147173C (en) | 1984-11-05 |
| DK92780A (en) | 1981-09-05 |
| IT1169231B (en) | 1987-05-27 |
| WO1981002541A1 (en) | 1981-09-17 |
| IE810382L (en) | 1981-09-04 |
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