EP0095678B1 - Verfahren zur Ausbildung eines Leim- und Härterfilms und Vorrichtung zur Ausübung des Verfahrens - Google Patents

Verfahren zur Ausbildung eines Leim- und Härterfilms und Vorrichtung zur Ausübung des Verfahrens Download PDF

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Publication number
EP0095678B1
EP0095678B1 EP83104999A EP83104999A EP0095678B1 EP 0095678 B1 EP0095678 B1 EP 0095678B1 EP 83104999 A EP83104999 A EP 83104999A EP 83104999 A EP83104999 A EP 83104999A EP 0095678 B1 EP0095678 B1 EP 0095678B1
Authority
EP
European Patent Office
Prior art keywords
hardener
glue
board
film
liquid
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.)
Expired
Application number
EP83104999A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0095678A2 (de
EP0095678A3 (en
Inventor
Joachim Ebert
Claus Dr. Neumann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BASF SE
Original Assignee
BASF SE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BASF SE filed Critical BASF SE
Priority to AT83104999T priority Critical patent/ATE29399T1/de
Publication of EP0095678A2 publication Critical patent/EP0095678A2/de
Publication of EP0095678A3 publication Critical patent/EP0095678A3/de
Application granted granted Critical
Publication of EP0095678B1 publication Critical patent/EP0095678B1/de
Expired legal-status Critical Current

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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

Definitions

  • the present invention relates to a method for forming a glue and hardener film and a device for carrying out the method.
  • glue and hardener should be applied separately to the wooden surfaces to be glued with the aid of one nozzle each. Due to the use of nozzles, it cannot be guaranteed that all surfaces to be glued are wetted to the same extent by glue and hardener.
  • DE-PS 2 416 032 describes applying glue and hardener separately to the wood in the form of strips. However, this does not always ensure that strips of glue and hardener come into contact with each other.
  • liquid glue and hardener films
  • liquid glue and hardener films
  • the pouring curtain is formed by overflowing the liquid over the edge of the trough.
  • the edge of the trough over which the liquid runs must be absolutely flat and arranged horizontally in order to achieve a liquid film of uniform thickness. For example, air bubbles that emerge from the liquid can form holes in the film.
  • DE-A-1 918 462 describes a method for forming a lacquer film and a device with the features of the preamble of claims 1 and 4, respectively.
  • the known method is intended to keep the leading edge and the trailing edge of the workpieces free of paint.
  • the workpiece transport elements closer to the flow curtain in the direction of flow are arranged lower than the workpiece transport elements arranged at the beginning and end of the transport.
  • a liquid film on a board in particular a glue and hardener film on a preferably elongated board intended for the production of wooden structures, by pouring at least one liquid by means of at least one dispensing container arranged above the board and transverse to its direction of movement , the width of which tapers towards the board, the liquid film being in each case the same width or width as the board and preferably the board being moved under the dispensing containers, the liquid being dispensed from the dispensing container as a falling flow curtain, can advantageously be carried out, if the longitudinal walls of the dispenser are sieve-shaped, such that the liquid forms a closed surface on the outside of the sieve or perforated plate after passing through and forms the falling flow curtain from the lowest point.
  • the device suitable for this process which is preferably operated in a stationary manner, essentially consists of storage containers 1 for glue or hardener, with the respective storage containers connected in line with the respective storage containers, arranged above the board 2, dispensing containers 3 arranged below the board, and optionally one each for the return of glue and hardener connecting line 4 and in each case one pump 5 arranged in the connecting line, at least one of the dispensing containers being designed as a trough-shaped dispensing container 6, the width of which tapers towards the board and the longitudinal walls 7, 7 'of which are sieve-shaped are and have a drain edge 8 at their lowest point.
  • a special embodiment of the dispensing container is that it has the shape of a three-sided prism, the two inclined longitudinal walls 7, 7 'representing the sieve or perforated plate, the line of intersection of which forms the drain edge 8 and the upper side of the dispensing container is provided with an inlet 11 .
  • the resulting liquid curtain has a tendency to contract, it can be guided and stabilized at its edges. This can be done with the aid of rigid or elastic rods 9, 9 'which act in a manner known per se and which are located at the two ends of the trailing edge.
  • Another possibility is to guide and stabilize the liquid curtain through special, adjustable in size outlet openings 10, 10 ', which are located at both ends of the trailing edge.
  • the two outlet openings which can have the shape of holes or slots, Compared to the smaller sieve or perforated plate openings, more liquid escapes per unit of time. As a result, two liquid strands delimiting the liquid curtain are formed. In individual cases, this type of guiding the liquid curtain can have the advantage of being less susceptible to faults than with guide rods.
  • the flow rate of the liquid is generally regulated by the delivery rate of the pump 12.
  • the pump output is increased.
  • more liquid is conveyed into the sieve trough, and at the same time the liquid outlet area increases.
  • the amount of discharge can be further increased by providing a closed delivery container ( Figure 3). In this way, the amount of liquid emerging from the sieve becomes essentially proportional to the pump pressure.
  • sieves or perforated plates with different mesh sizes can be used.
  • wire mesh sieves with a width of 1 to 6 mm can be used.
  • glue and hardener can be applied either separately or as a mixture.
  • the excess glue and the hardener can be returned to the storage container by means of pumps.
  • the inventive method allows the use of various types of liquid glues, for. B. of aminoplast or phenolic resins such as formaldehyde-urea condensates.
  • formaldehyde-urea-melamine condensates formaldehyde-urea-melamine-phenol condensates, formaldehyde-phenol condensates or formaldehyde-phenoi / resorcinol condensates.
  • Glues and hardeners can be used for this in both thixotropic and non-thixotropic settings - in the case of non-thixotropic settings, the hardener should be viscous if necessary - and can be used in pure form or together with additional aids known per se.
  • the method according to the invention ensures that when the glue and hardener are applied separately, both components always come into contact with one another.
  • a metal dispensing container in the form of a three-sided prism was used as the casting device, the edge length of the end walls in each case being 15 cm and that of the two inclined, sieve-shaped longitudinal walls in each case 45 cm.
  • the sieve surfaces consisted of wire mesh with a mesh size of 2 mm.
  • rigid, downward-facing metal rods were located at the two lower ends of the drain edge.
  • a resorcinol resin and, separately, a thixotropic liquid hardener were cast in Example 1 and, in Example 2, a resorcinol resin, thixotropically adjusted and a thixotropic liquid hardener separately.
  • example 2 the glue or hardener described in example 1 was used, a thixotropic agent likewise being added to the glue.

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)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Adhesive Tapes (AREA)
  • Moulding By Coating Moulds (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Dental Preparations (AREA)
  • Adhesives Or Adhesive Processes (AREA)
EP83104999A 1982-05-29 1983-05-20 Verfahren zur Ausbildung eines Leim- und Härterfilms und Vorrichtung zur Ausübung des Verfahrens Expired EP0095678B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83104999T ATE29399T1 (de) 1982-05-29 1983-05-20 Verfahren zur ausbildung eines leim- und haerterfilms und vorrichtung zur ausuebung des verfahrens.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3220379 1982-05-29
DE19823220379 DE3220379A1 (de) 1982-05-29 1982-05-29 Verfahren zur ausbildung eines leim- und haerterfilms und vorrichtung zur ausuebung des verfahrens

Publications (3)

Publication Number Publication Date
EP0095678A2 EP0095678A2 (de) 1983-12-07
EP0095678A3 EP0095678A3 (en) 1985-09-11
EP0095678B1 true EP0095678B1 (de) 1987-09-09

Family

ID=6164870

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83104999A Expired EP0095678B1 (de) 1982-05-29 1983-05-20 Verfahren zur Ausbildung eines Leim- und Härterfilms und Vorrichtung zur Ausübung des Verfahrens

Country Status (5)

Country Link
EP (1) EP0095678B1 (no)
AT (1) ATE29399T1 (no)
DE (2) DE3220379A1 (no)
DK (1) DK169424B1 (no)
NO (1) NO170915C (no)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3612973A1 (de) * 1986-04-17 1987-10-29 Basf Ag Vorrichtung zum auftragen von leim auf holzteile
DE3712347A1 (de) * 1987-04-11 1988-10-20 Basf Ag Vorrichtung zum auftragen von leim auf holzteile
DE3834027A1 (de) * 1988-10-06 1990-04-12 Basf Ag Verfahren zum auftragen eines gebrauchsfertigen leimes auf die oberflaeche von holzteilen
GB2255518A (en) * 1991-04-24 1992-11-11 Carrs Paints Limited Process for applying surface coating
DE19644156A1 (de) * 1996-10-24 1998-04-30 Sika Chemie Gmbh Vorrichtung und Verfahren zum Auftragen von Klebstoff
DE19716466A1 (de) * 1997-04-21 1998-10-22 Bachofen & Meier Ag Verfahren und Vorrichtung zum Auftragen von Dispersionen auf eine Materialbahn
US6458417B2 (en) 2000-07-07 2002-10-01 Akzo Nobel N.V. Method of gluing
CN102935420B (zh) * 2011-08-15 2014-06-25 浙江瑞翌新材料科技有限公司 金刚石线锯植砂方法及系统
CN109225751A (zh) * 2018-09-08 2019-01-18 徐州东宁胶业有限公司 一种胶液的上胶装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1735852U (de) * 1955-12-17 1956-12-13 Kasika Chem Fab G M B H Vorrichtung zur herstellung von ueberzuegen oder filmen aus kunststoff.
GB938084A (en) * 1960-11-07 1963-09-25 Talent Europ Company Ltd Improvements in the production of polyester resin coatings
DE1918462A1 (de) * 1969-04-11 1970-10-15 Buerkle & Co Robert Lackgiessmaschine fuer die Beschichtung plattenfoermiger Werkstuecke
SE364459B (no) * 1972-10-27 1974-02-25 Casco Ab
DE2416032C3 (de) * 1974-03-27 1982-04-01 Aktiebolaget Casco, Stockholm Verfahren zum Verleimen von Holzteilen

Also Published As

Publication number Publication date
DE3220379A1 (de) 1983-12-01
NO831902L (no) 1983-11-30
DK169424B1 (da) 1994-10-31
DE3373423D1 (en) 1987-10-15
EP0095678A2 (de) 1983-12-07
DK238583D0 (da) 1983-05-27
NO170915B (no) 1992-09-21
ATE29399T1 (de) 1987-09-15
DK238583A (da) 1983-11-30
NO170915C (no) 1992-12-30
EP0095678A3 (en) 1985-09-11

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