DK169424B1 - Process and plant for forming a layer of glue and curing on a board - Google Patents
Process and plant for forming a layer of glue and curing on a board Download PDFInfo
- Publication number
- DK169424B1 DK169424B1 DK238583A DK238583A DK169424B1 DK 169424 B1 DK169424 B1 DK 169424B1 DK 238583 A DK238583 A DK 238583A DK 238583 A DK238583 A DK 238583A DK 169424 B1 DK169424 B1 DK 169424B1
- Authority
- DK
- Denmark
- Prior art keywords
- curing agent
- board
- glue
- liquid
- film
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/30—Processes for applying liquids or other fluent materials performed by gravity only, i.e. flow coating
- B05D1/305—Curtain coating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
- B05C5/002—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the work consisting of separate articles
- B05C5/004—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the work consisting of separate articles the work consisting of separate rectangular flat articles, e.g. flat sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
- B05C5/005—Curtain coaters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
- B27G11/00—Applying adhesives or glue to surfaces of wood to be joined
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Coating Apparatus (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Moulding By Coating Moulds (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Adhesive Tapes (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Dental Preparations (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
Description
i DK 169424 B1in DK 169424 B1
Opfindelsen angår en fremgangsmåde til dannelse af en væskefilm på et brædt, især en lim- og hærdemiddelfilm, og et anlæg til udøvelse af fremgangsmåden.The invention relates to a method for forming a liquid film on a board, in particular a glue and curing agent film, and to a plant for carrying out the method.
5 Ved limningen af trædele er den metode, i henhold til hvilken limen og hærdemidlet påføres, af væsentlig betydning. Udførelsen deraf er med til at påvirke kvaliteten af limningen på afgørende måde.5 In the gluing of wooden parts, the method by which the glue and the curing agent is applied is of essential importance. Its performance helps to influence the quality of the bonding in a decisive manner.
10 I henhold til forslaget i DE-PS 2 213 269 skal lim og hærdemiddel påføres separat på de træflader, der skal sammenlimes, ved hjælp af hver sin dyse. Derved kan man, i afhængighed af anvendelsen af dyserne, ikke sikre, at alle de flader, der skal sammenlimes, befugtes af lim og 15 hærdemiddel i lige stort omfang.10 According to the proposal in DE-PS 2 213 269, glue and curing agent must be applied separately to the wooden surfaces to be glued, using each nozzle. Thereby, depending on the use of the nozzles, it is not possible to ensure that all the surfaces to be glued are wetted by glue and curing agent to an equal extent.
I DE-PS 2 416 032 er det beskrevet, at man kan påføre lim og hærdemiddel separat i form af striber på træet. Men i dette tilfælde er det ikke altid sikkert, at lim- og hær-20 demiddelstriberne kommer i berøring med hinanden.DE-PS 2 416 032 discloses that glue and curing agent can be applied separately in the form of stripes on the wood. But in this case, the adhesive and curing agent strips may not always be in contact with one another.
En anden mulighed består i udhældning af lim- og haerdemiddelfilm (i det følgende anvender man for begreberne lim og hærdemiddel begrebet væske) på træoverfladen. Sæd-25 vanligvis arbejder man derved med trug, ved hvilke hældetæppet fremkommer ved væskens overløb over trugranden. Derved må den trugkant, over hvilken væsken løber bort, være absolut plan og anordnet vandret for på denne måde at opnå en væskefilm med regelmæssig tykkelse. Derved kan 30 f.eks. luftblærer, der træder ud af væsken, danne huller i filmen.Another option consists of pouring adhesive and curing agent films (hereinafter the term adhesive and curing agent the term liquid) is applied to the wood surface. In general, semen is then used to work with troughs, at which the blanket appears at the liquid overflow over the trough edge. In this way, the trough edge over which the liquid flows away must be absolutely flat and arranged horizontally so as to obtain a liquid film of regular thickness. Thereby, e.g. air blisters emerging from the fluid form holes in the film.
Anvendelsen af spalter til dannelse af en hærdefilm beskrives i DE-PS 1 097 864 eller i brugsmønster nr.The use of slits to form a curing film is described in DE-PS 1 097 864 or in usage pattern no.
35 1 735 852. Ved denne metode kan der optræde vanskelighe der ved fremstilling af en film med regelmæssig tykkelse.35 1 735 852. This method may present difficulties in making a film of regular thickness.
De kanter, der danner spalten, må derved på den ene side DK 169424 B1 2 være anordnet absolut plant og på den anden side parallelt og vandret. Hvis dette ikke er tilfældet, eller hvis der sætter sig faste bestanddele i for af f.eks. klumper eller træstykker fast før spalten, kan væskefilmen bri-5 ste.The edges forming the gap must, on the one hand, be arranged absolutely flat and on the other side parallel and horizontal. If this is not the case, or if solid constituents are deposited in, e.g. lumps or pieces of wood stuck before the gap, the liquid film may crack.
I DE-A-1 918 462 beskrives en fremgangsmåde til dannelse af en lakfilm og en indretning med de henholdsvis i krav l's og krav 4's indledning angivne træk. Ved denne kendte 10 fremgangsmåde holdes emnernes forreste og bageste kant fri for lak. For at opnå dette placeres de emne-trans-portorganer, der i gennemløbsretningen er beliggende nærmest væskeforhænget, lavere end de emne-transportorganer, som er anbragt ved transportens begyndelse og ved dens 15 ende.DE-A-1 918 462 discloses a method of forming a lacquer film and a device having the features of the preamble of claim 1 and claim 4, respectively. In this known method, the front and rear edges of the blanks are kept free of varnish. To achieve this, the workpiece conveying means located closest to the liquid curtain are placed lower than the workpiece conveying means located at the beginning of the transport and at its end.
Fremgangsmåden ifølge opfindelsen, der er af den i indledningen til krav 1 angivne art, er ejendommelig ved det i den kendetegnende del af krav 1 angivne.The method according to the invention, which is of the kind set forth in the preamble of claim 1, is characterized by the method of claim 1.
2020
Yderligere detaljer og fordele ved apparatet ifølge opfindelsen skal forklares senere i denne beskrivelse og i forbindelse med tegningen.Further details and advantages of the apparatus according to the invention will be explained later in this description and in connection with the drawing.
25 Fig. 1 viser en skematisk opbygning af apparatet ifølge opfindelsen, og fig. 2 og 3 viser hver for sig en særlig udførelsesform for dispenseringsbeholderen 6.FIG. 1 shows a schematic structure of the apparatus according to the invention, and FIG. 2 and 3 show separately a particular embodiment of the dispensing container 6.
3030
Det til denne fremgangsmåde velegnede apparat, der fortrinsvis arbejder stationært, og som er af den i indledningen til krav 4 angivne art, er ejendommelige ved det i den kendetegnende del af krav 4 angivne.The apparatus suitable for this method, which preferably operates stationary, and which is of the kind specified in the preamble of claim 4, is peculiar to that of the characterizing part of claim 4.
En særlig udførelsesform for dispenseringsbeholderen består i, at dispenseringsbeholderen 6 antager form af et 35 DK 169424 B1 3 tresidet prisme, hvorved begge de skråtstående længdevægge 7, 7' repræsenterer sigten eller hullepladen, hvis snitlinien danner afløbskanten 8, og hvorved den åbne side af dispenseringsbeholderen er forsynet med et tilløb 5 11.A particular embodiment of the dispensing container consists in that the dispensing container 6 takes the form of a three-sided prism, whereby both the inclined longitudinal walls 7, 7 'represent the screen or the hole plate, if the section line forms the draining edge 8, whereby the open side of the dispensing container 8 is provided with an inlet 5 11.
Da det opståede væsketæppe har tendens til at trække sig sammen, kan det føres og stabiliseres ved sine rande. Dette kan ske ved hjælp af på i og for sig kendt måde 10 virkende eller elastiske stave 9, 9', der befinder sig ved begge ender af afløbskanten. En anden mulighed består i at føre væsketæppet gennem særlige, hvad angår deres størrelse regulerbare udgangsåbninger 10, 10', der sidder ved begge ender af afløbskanten og derved at frembringe 15 en stabilisering. Gennem de to udgangsåbninger, der kan have form som huller eller spalter, udtræder der i sammenligning med de mindre si- eller hullepladeåbninger mere væske per tidsenhed. Derved dannes der to væskestrenge, der begrænser væsketæppet. Denne art af føring 20 af væsketæppet kan i det enkelte tilfælde udvise den fordel, at den har en pålideligere driftssikkerhed i forhold til føringen med ledestave.As the resulting liquid carpet tends to contract, it can be guided and stabilized at its edges. This can be done by means known or known in the art 10 or elastic rods 9, 9 'located at both ends of the drain edge. Another option is to pass the liquid blanket through special, as to their size, adjustable exit openings 10, 10 ', which are located at both ends of the drain edge, thereby providing a stabilization. Through the two exit openings, which can take the form of holes or slits, more liquid per unit of time is compared to the smaller screen or hole plate openings. Thereby, two fluid strands are formed which limit the fluid blanket. This kind of guide 20 of the liquid blanket may in the individual case have the advantage of having a more reliable reliability compared to the guide with guide rods.
Den gennemstrømmende mængde af væske reguleres i alminde-25 lighed ved transporteffekten af pumpen 12. For f.eks. ved udformningen af dispenseringsbeholderen som åbent trug at opnå en stor væskepåføring på brædtet forøger man pumpens transporteffekt. Derved transporteres der mere væske i sitruget, hvorved samtidigt væskeudgangsfladen forøges.The flow rate of liquid is generally controlled by the transport power of the pump 12. For e.g. By designing the dispensing container as an open trough to obtain a large fluid application on the board, the transport effect of the pump is increased. Thereby, more liquid is transported in the seat trough, thereby simultaneously increasing the liquid outlet surface.
30 Der udtræder i hvert tilfælde en bestemt væskemængde, der er afhængig af væskevoluminet i sien, gennem sifladen, dvs. der indstiller sig en dynamisk ligevægt.In each case, a certain amount of liquid, which depends on the volume of liquid in the sieve, exits through the sieve plate, ie. that sets up a dynamic equilibrium.
Mængden af det udtrædende materiale kan yderligere for-35 øges, idet man tilvejebringer en lukket dispenseringsbe-holder (fig. 3). På denne måde bliver den væskemængde, der træder ud fra sigten, i det væsentlige proportional DK 169424 B1 4 med pumpetrykket.The amount of the extracted material can be further increased by providing a closed dispensing container (Fig. 3). In this way, the amount of fluid exiting the screen becomes substantially proportional to the pump pressure.
I afhængighed af væskens viskositet kan man anvende sigter eller hulleplader med forskellig maskevidde. F.eks.Depending on the viscosity of the liquid, screens or hollow plates with different mesh sizes can be used. Eg.
5 kan man bruge sigter af masketråd med bredder på mellem 1 og 6 mm.5, mesh screens with widths of between 1 and 6 mm can be used.
Ved fremgangsmåden ifølge opfindelsen kan man både påføre lim og hærder separat og i form af en blanding. Ved denne 10 separate påføring, der repræsenterer den foretrukne arbejdsmåde, kan den overskydende lim og hærdemidlet tilbageføres til forrådsbeholderne ved hjælp af pumper.In the method according to the invention, both glue and hardener can be applied separately and in the form of a mixture. In this separate application, which represents the preferred mode of operation, the excess glue and the curing agent can be returned to the storage containers by means of pumps.
Fremgangsmåden ifølge opfindelsen tillader anvendelsen af 15 forskellige flydende limsorter, f.eks. aminoplast- eller phenolplastharpikser, såsom formaldehyd-urinstof-kondensater, formaldehyd-urinstof-melamin-kondensater, formal-dehyd-urinstof-melamin-phenol-kondensater, formaldehyd-phenol-kondensater eller formaldehyd-phenol/resorcin-kon-20 densater.The method according to the invention allows the use of 15 different liquid adhesives, e.g. aminoplastic or phenolic resins such as formaldehyde-urea condensates, formaldehyde-urea-melamine condensates, formaldehyde-urea-melamine-phenol condensates, formaldehyde-phenol condensates or formaldehyde-phenol / resorcin condensates.
Lim og hærdemidler kan til dette formål anvendes både i thixotrope og i ikke thixotrope indstillinger; ved ikke thixotrope indstillinger skulle hærderen eventuelt være 25 viskos, og de kan anvendes i ren form eller sammen med i og for sig kendte yderligere hjælpemidler.Adhesives and curing agents can be used for this purpose in both thixotropic and non-thixotropic settings; in non-thixotropic settings, the hardener should optionally be viscous and may be used in pure form or in combination with additional aids known per se.
Ved fremgangsmåden ifølge opfindelsen sikres det, at begge komponenter stadig kommer i berøring med hinanden, når 30 lim og hærdemiddel påføres separat.In the process of the invention, it is ensured that both components still come into contact with each other when 30 glue and curing agent are applied separately.
Ved den separate påføring af begge komponenter blander disse sig ved sammenlægningen af brædderne bedre, end det er tilfældet f.eks. ved en separat påføring af lim og 35 hærdemiddel i form af snore.In the separate application of both components, these mix better at the joining of the boards than is the case e.g. by a separate application of glue and curing agent in the form of cords.
5 DK 169424 B15 DK 169424 B1
EKSEMPLEREXAMPLES
Som hældeorgan anvendte man en af metal bestående dispen-seringsbeholder i form af et tresidet prisme, hvis kant-5 længde ved de forreste vægge i hvert tilfælde var 15 cm og hvis kantlængde af de to skråtstående, sigteagtige længdevægge i hvert tilfælde var 45 cm. Sigtefladerne bestod af masketråd med en maskevidde på 2 mm. Til stabilisering af filmen befandt der sig ved de to nedre ender af 10 afløbskanten stive, nedad rettede metalstave.As a pouring device, a metal dispensing container was used in the form of a three-sided prism whose edge length at the front walls in each case was 15 cm and the edge length of the two oblique, sieve-like length walls in each case was 45 cm. The screening surfaces consisted of mesh thread with a mesh width of 2 mm. To stabilize the film, there were stiff, downwardly directed metal rods at the two lower ends of the 10 edge.
I eksempel 1 støbte man en resorcinharpiks og separat derfra et thixotropt indstillet, flydende hærdemiddel, og i eksempel 2 en thixotropt indstillet resorcinharpiks og 15 separat derfra et thixotropt indstillet, flydende hærdemiddel .In Example 1 a resorcin resin and separately thixotropically adjusted liquid curing agent were cast, and in Example 2 a thixotropically adjusted resorcin resin and 15 separately thixotropic liquid curing agent.
22
Ved en påføring af lim og hærdemiddel på ca. 550 g/m på de med en fremadgående hastighed på ca. 100 m/minut bevæ-20 gede prøvetræstykker var den opståede lim- eller hærde-middelfilm i begge tilfælde straks godt tildannet, og de frembragte på overfladen af prøvetræstykkerne et lag af regelmæssig tykkelse.By applying glue and curing agent of approx. 550 g / m on those with a forward speed of approx. In 100 cases, 100 m / min of moving sample wood pieces, the resulting adhesive or curing agent film was immediately well formed and produced a layer of regular thickness on the surface of the sample wood pieces.
25 Man anvendte derved i eksempel 1 følgende lim eller hærdemiddel : a) en vandig opløsning af et phenol-resorcin-formaldehydkondensationsprodukt med et tørstofindhold på ca. 50%, en 3 30 massefylde på ca. 1,12 g/cm og en viskositet på ca. 400 mPa.s, b) et flydende hærdemiddel på formaldehydbasis. Til hærdemidlet var der tilsat et thixotroperingsmiddel.The following adhesive or curing agent was thus used in Example 1: a) an aqueous solution of a phenol-resorcin-formaldehyde condensation product having a dry matter content of approx. 50%, a density of approx. 1.12 g / cm and a viscosity of approx. 400 mPa.s, b) a formaldehyde-based liquid curing agent. A thixotroping agent was added to the curing agent.
I eksempel 2 anvendte man den under eksempel 1 beskrevne lim eller hærdemiddel, hvorved der til limen ligeledes var tilsat et thixotroperingsmiddel.In Example 2, the glue or curing agent described in Example 1 was used, whereby a thixotroping agent was also added to the glue.
3535
Claims (7)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3220379 | 1982-05-29 | ||
DE19823220379 DE3220379A1 (en) | 1982-05-29 | 1982-05-29 | METHOD FOR TRAINING A GLUE AND HARDENER FILM AND DEVICE FOR CARRYING OUT THE METHOD |
Publications (3)
Publication Number | Publication Date |
---|---|
DK238583D0 DK238583D0 (en) | 1983-05-27 |
DK238583A DK238583A (en) | 1983-11-30 |
DK169424B1 true DK169424B1 (en) | 1994-10-31 |
Family
ID=6164870
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DK238583A DK169424B1 (en) | 1982-05-29 | 1983-05-27 | Process and plant for forming a layer of glue and curing on a board |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0095678B1 (en) |
AT (1) | ATE29399T1 (en) |
DE (2) | DE3220379A1 (en) |
DK (1) | DK169424B1 (en) |
NO (1) | NO170915C (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3612973A1 (en) * | 1986-04-17 | 1987-10-29 | Basf Ag | DEVICE FOR APPLYING GLUE TO WOOD PARTS |
DE3712347A1 (en) * | 1987-04-11 | 1988-10-20 | Basf Ag | DEVICE FOR APPLYING GLUE TO WOOD PARTS |
DE3834027A1 (en) * | 1988-10-06 | 1990-04-12 | Basf Ag | METHOD FOR APPLYING A READY-TO-USE GLUE TO THE SURFACE OF WOODEN PARTS |
GB2255518A (en) * | 1991-04-24 | 1992-11-11 | Carrs Paints Limited | Process for applying surface coating |
DE19644156A1 (en) * | 1996-10-24 | 1998-04-30 | Sika Chemie Gmbh | Application of adhesive to one side of jointing strip |
DE19716466A1 (en) * | 1997-04-21 | 1998-10-22 | Bachofen & Meier Ag | Method and device for applying dispersions to a material web |
US6458417B2 (en) | 2000-07-07 | 2002-10-01 | Akzo Nobel N.V. | Method of gluing |
CN102935420B (en) * | 2011-08-15 | 2014-06-25 | 浙江瑞翌新材料科技有限公司 | Method and system for sand planting of diamond wire saw |
CN109225751A (en) * | 2018-09-08 | 2019-01-18 | 徐州东宁胶业有限公司 | A kind of sizer of glue |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1735852U (en) * | 1955-12-17 | 1956-12-13 | Kasika Chem Fab G M B H | DEVICE FOR THE PRODUCTION OF COATINGS OR FILMS FROM PLASTIC. |
GB938084A (en) * | 1960-11-07 | 1963-09-25 | Talent Europ Company Ltd | Improvements in the production of polyester resin coatings |
DE1918462A1 (en) * | 1969-04-11 | 1970-10-15 | Buerkle & Co Robert | Lacquer casting machine for the coating of plate-shaped workpieces |
SE364459B (en) * | 1972-10-27 | 1974-02-25 | Casco Ab | |
DE2416032C3 (en) * | 1974-03-27 | 1982-04-01 | Aktiebolaget Casco, Stockholm | Method for gluing wooden parts |
-
1982
- 1982-05-29 DE DE19823220379 patent/DE3220379A1/en not_active Withdrawn
-
1983
- 1983-05-20 DE DE8383104999T patent/DE3373423D1/en not_active Expired
- 1983-05-20 AT AT83104999T patent/ATE29399T1/en not_active IP Right Cessation
- 1983-05-20 EP EP83104999A patent/EP0095678B1/en not_active Expired
- 1983-05-27 NO NO831902A patent/NO170915C/en unknown
- 1983-05-27 DK DK238583A patent/DK169424B1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
NO170915B (en) | 1992-09-21 |
DK238583A (en) | 1983-11-30 |
DK238583D0 (en) | 1983-05-27 |
ATE29399T1 (en) | 1987-09-15 |
DE3220379A1 (en) | 1983-12-01 |
DE3373423D1 (en) | 1987-10-15 |
EP0095678B1 (en) | 1987-09-09 |
EP0095678A3 (en) | 1985-09-11 |
NO831902L (en) | 1983-11-30 |
NO170915C (en) | 1992-12-30 |
EP0095678A2 (en) | 1983-12-07 |
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B1 | Patent granted (law 1993) | ||
PUP | Patent expired |