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WO1993017882A1 - Procede et machine permettant de decaper entre autre de la peinture sur le bois de construction, et equipement de mise en ×uvre du procede - Google Patents

Procede et machine permettant de decaper entre autre de la peinture sur le bois de construction, et equipement de mise en ×uvre du procede Download PDF

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Publication number
WO1993017882A1
WO1993017882A1 PCT/SE1993/000190 SE9300190W WO9317882A1 WO 1993017882 A1 WO1993017882 A1 WO 1993017882A1 SE 9300190 W SE9300190 W SE 9300190W WO 9317882 A1 WO9317882 A1 WO 9317882A1
Authority
WO
WIPO (PCT)
Prior art keywords
paint
oven
removal
etcetera
timber
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.)
Ceased
Application number
PCT/SE1993/000190
Other languages
English (en)
Inventor
Göran HÅKANSSON
Holger SCHIØLER
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP93905737A priority Critical patent/EP0629157B1/fr
Priority to DE69319228T priority patent/DE69319228T2/de
Priority to DK93905737T priority patent/DK0629157T3/da
Priority to AU36547/93A priority patent/AU3654793A/en
Publication of WO1993017882A1 publication Critical patent/WO1993017882A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44D—PAINTING OR ARTISTIC DRAWING, NOT OTHERWISE PROVIDED FOR; PRESERVING PAINTINGS; SURFACE TREATMENT TO OBTAIN SPECIAL ARTISTIC SURFACE EFFECTS OR FINISHES
    • B44D3/00—Accessories or implements for use in connection with painting or artistic drawing, not otherwise provided for; Methods or devices for colour determination, selection, or synthesis, e.g. use of colour tables
    • B44D3/16—Implements or apparatus for removing dry paint from surfaces, e.g. by scraping, by burning
    • B44D3/166—Implements or apparatus for removing dry paint from surfaces, e.g. by scraping, by burning by heating, e.g. by burning
    • B44D3/168—Implements or apparatus for removing dry paint from surfaces, e.g. by scraping, by burning by heating, e.g. by burning by electrically heating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44D—PAINTING OR ARTISTIC DRAWING, NOT OTHERWISE PROVIDED FOR; PRESERVING PAINTINGS; SURFACE TREATMENT TO OBTAIN SPECIAL ARTISTIC SURFACE EFFECTS OR FINISHES
    • B44D3/00—Accessories or implements for use in connection with painting or artistic drawing, not otherwise provided for; Methods or devices for colour determination, selection, or synthesis, e.g. use of colour tables
    • B44D3/16—Implements or apparatus for removing dry paint from surfaces, e.g. by scraping, by burning
    • B44D3/166—Implements or apparatus for removing dry paint from surfaces, e.g. by scraping, by burning by heating, e.g. by burning
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/80—Apparatus for specific applications

Definitions

  • the present invention relates to a method of removal of paint etcetera from window frames and other timber elements.
  • the invention also relates to equipment for practising the .invention.
  • Chlorinated solvents are technically efficient, but imply unacceptable health and environmental risks.
  • Is the element heated in a micro wave oven are several ad- vantages obtained.
  • the heating is accomplished not only by thermal conduction from the surfaces of the element towards the inner parts but is instantly generated through a layer of material of may be one cm or more.
  • the timber technologi- cal advantages are known.
  • Regarding the paint and putty re ⁇ moval we have demonstrated, that after heating in a micro wave oven to a temperature at which the element may just be handled by a nacked hand and shows no sign of blistering, in most cases is easy and fast done.
  • Just some types of paint requires heating to a temperature at which a gloved hand is necessary for the handling. No glass panes mounted in window frames, which we have treated in this way, have broken.
  • the equipment according to the invention is characterized by an oven with an oven chamber that large, that the element will fit in it without direct mechanical contact with any oven surface, and by a work space for the removal of paint etcetera located in the vincity of the oven so that a heatet element can be tooled before any chilling of significance for the removal of the paint etcetera has occured.
  • Such an oven can ensure the introduction and the extraction respec ⁇ tively of the element to be without risk of depositing soft ⁇ ened paint etcetera in the oven, and an even heat treatment of the element.
  • the required speedy execution of the methods second step is made possible, and a rationel industrial re ⁇ moval of paint etcetera can thus be established.
  • the heating time especially in a hot air oven, for many ele ⁇ ments such as window frames and door leaves, is a- number of times the period typically required for the removal work.
  • An optimised production flow is therefore achievable by means of equipment according to claim 6.
  • the inventors have, as stated, proved specific advantages in case the heating of the element is generated by micro waves. Particular advantages are realised in case the element com ⁇ prise a fixed glass pane.
  • the equipment according to claim 7 is advantageous because they allow for the heating of the element by means of micro waves. It is also an advantage, that heating in a micro wave oven can be accomplished quick ⁇ ly. A single micro wave oven may thus produce heated ele ⁇ ments for a number of paint removal stations.
  • a particularly simpel and safe control of the heating of elements is based on the weight of the element.
  • the moisture content of the timber is also of some importance. If the equipment comprises apparatuses for the controlling of weight and/or of moisture content is an expedient and simpel heating control made possible.
  • FIG. 1 a diagram illustrating a workshop arrangement for removal of paint etcetera from window panes and door leaves accor ⁇ ding to the invention. ⁇
  • figur 1 is 1 an A-shaped stand on the sides of which win ⁇ dow frames and door leaves to be treated are placed.
  • 2 is a scale for the checking of each elements weight.
  • 3 is a micro wave oven for the heating of the elements which are to have paint etcetera removed.
  • the oven 3 has an efficient oven chamber 120 cm wide, 80 cm high and 240 cm long. A large oven is advantageous because it allows for the 0 heating of a large element.
  • the oven material is not heated, so the loss of energy from the oven is not significantly in ⁇ creased by increased size of oven.
  • the oven 3 is designed according to known technique regarding micro wave ovens for the drying of timber.
  • each paint removal station is thus equipped wi h a rigid work bench comprising fixing tools for the fixing of elements during the removal of paint etcetera, and providing a convenient working hight. Alloca ⁇ ted to each paint removal station 4 is also known tools such as scrapers etcetera and work gloves for the handling of warm elements.
  • 5 is a stand, which is of similar design to the design of stand 1. Stand 5 is used for storing treated elements.
  • a window frame which after dismounting of all metallic fittings, has been placed on the stand 1, is carried to the scale 2 for checking of its weight and of the moisture con ⁇ tent of its timber.
  • a typical window frame the size of 50 x 9 ⁇ cm designed with one horisontal glazing bar and two glass panes each the thickness of 2 mm weighs about 5 kilo ⁇ grammes.
  • the moisture content may be aproximately 2 ⁇ %.
  • the window frame is placed horisontally in the oven 3 in order to be heated. Based on the weight and moisture content, and on successively collected experience is such an oven setting chosen, which within 4 minutes will produce the heating of the timber in the window frame to a temperature, at which the frame may just be handled by an ungloved hand.
  • the heated window frame is carried to a paint removal sta ⁇ tion 4 and is clamped to the work bench the glass grove fa ⁇ cing upwards. Paint covering the upwards facing surfaces is scraped off, and putty is removed e.g. by means of a putty knife. The glass pins now freely accessible are removed.
  • the window frame is undamped and turned upside down. Using a knife with a blade bend in an angel is each glass pane in turn loosened from the window frame. When a glass pane is loosing its adherence to to the window frame it is falling to the work bench from where it is removed, marked with win ⁇ dow frame indentification markings, and taken to a storrage ⁇
  • the window frame - now without glass panes - is now ridded of paint and left over putty, and is thereafter placed on stand 5.
  • the inventors have tested the method according to the inven ⁇ tion using window frames and door leaves of various origin. Different types of paints varies in ease of removal. By testing we have compared the labour required for processing identically painted identical elements and demonstrated, that the removal of paint etcetera according to the inven ⁇ tion typically requires half the labour or less compared to the combined requirement for the ridding of profiled surfa- ces using a hot air jet, and sanding of larger plane surfa ⁇ ces using band sanding. All glass panes fitted in the test elements were removed unbroken and could be refitted in all tests. Tests demonstrates, that the paint normally is easily scraped off during a period of 10 - 12 minutes after ter i- nation of the heating. This span of time was sufficient for the finishing of the work on window frames designed with one or two window panes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Coating Apparatus (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Surface Treatment Of Glass (AREA)

Abstract

Un procédé qui permet de décaper entre autre de la peinture sur le bois de construction, par exemple le cadre d'une fenêtre ou un battant de porte, comprend une étape où l'élément en question est placé dans un four dans lequel on chauffe au moins la peinture et la couche extérieure de bois, ainsi qu'une étape, intervenant ausitôt après, dans laquelle la peinture et/ou les matériaux similaires tels que le mastic, subissent un décapage mécanique par les techniques habituelles, avant que l'élément en bois de construction ne soit refroidi à température ambiante. On décrit aussi l'équipement nécessaire à l'application de ce procédé qui permet d'économiser de la main-d'÷uvre et, dans une certaine variante, de réutiliser d'éventuels vitrages montés dans ledit élément.
PCT/SE1993/000190 1992-03-06 1993-03-05 Procede et machine permettant de decaper entre autre de la peinture sur le bois de construction, et equipement de mise en ×uvre du procede Ceased WO1993017882A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP93905737A EP0629157B1 (fr) 1992-03-06 1993-03-05 Procede et machine permettant de decaper a la mecanique de la peinture et du mastic sur le bois de construction, et equipement de mise en oeuvre du procede
DE69319228T DE69319228T2 (de) 1992-03-06 1993-03-05 Verfahren zur mechanischen entfernung von farbe und kitt von einer holzkonstruktion und vorrichtung zu seiner durchfuehrung
DK93905737T DK0629157T3 (da) 1992-03-06 1993-03-05 Fremgangsmåde til mekanisk fjernelse af maling og kit fra et træelement og apparat til udøvelse af fremgangsmåden
AU36547/93A AU3654793A (en) 1992-03-06 1993-03-05 Method of removal of paint etcetera from a timber element and equipment for practising the method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9200684-0 1992-03-06
SE9200684A SE470255B (sv) 1992-03-06 1992-03-06 Förfarande och anordning för avlägsnande av färg från virkeselement

Publications (1)

Publication Number Publication Date
WO1993017882A1 true WO1993017882A1 (fr) 1993-09-16

Family

ID=20385529

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1993/000190 Ceased WO1993017882A1 (fr) 1992-03-06 1993-03-05 Procede et machine permettant de decaper entre autre de la peinture sur le bois de construction, et equipement de mise en ×uvre du procede

Country Status (10)

Country Link
EP (1) EP0629157B1 (fr)
AT (1) ATE167437T1 (fr)
AU (1) AU3654793A (fr)
CA (1) CA2131445A1 (fr)
DE (1) DE69319228T2 (fr)
DK (1) DK0629157T3 (fr)
ES (1) ES2120496T3 (fr)
HU (1) HU213518B (fr)
SE (1) SE470255B (fr)
WO (1) WO1993017882A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2785571A1 (fr) * 1998-11-05 2000-05-12 Traitement Ind Des Metaux Procede de decapage d'objets peints en bois
FR2785572A1 (fr) * 1998-11-05 2000-05-12 Traitement Ind Des Metaux Procede de decapage d'objets peints en bois et dispositif pour la mise en oeuvre de ce procede

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1038458A (fr) * 1976-03-08 1978-09-12 Michael Hamid Sechoir aux micro-ondes pour la peinture
DE3518725A1 (de) * 1985-05-24 1986-11-27 Eisenmann Maschinenbaugesellschaft mbH, 7030 Böblingen Verfahren und vorrichtung zur thermischen beseitigung von lackrueckstaenden an geraeteteilen
WO1989010850A1 (fr) * 1988-05-04 1989-11-16 Nicholas Maunder Ashdown Outils de decapage

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1038458A (fr) * 1976-03-08 1978-09-12 Michael Hamid Sechoir aux micro-ondes pour la peinture
DE3518725A1 (de) * 1985-05-24 1986-11-27 Eisenmann Maschinenbaugesellschaft mbH, 7030 Böblingen Verfahren und vorrichtung zur thermischen beseitigung von lackrueckstaenden an geraeteteilen
WO1989010850A1 (fr) * 1988-05-04 1989-11-16 Nicholas Maunder Ashdown Outils de decapage

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2785571A1 (fr) * 1998-11-05 2000-05-12 Traitement Ind Des Metaux Procede de decapage d'objets peints en bois
FR2785572A1 (fr) * 1998-11-05 2000-05-12 Traitement Ind Des Metaux Procede de decapage d'objets peints en bois et dispositif pour la mise en oeuvre de ce procede

Also Published As

Publication number Publication date
DE69319228D1 (de) 1998-07-23
EP0629157B1 (fr) 1998-06-17
HU9402561D0 (en) 1994-11-28
HUT68842A (en) 1995-08-28
DK0629157T3 (da) 1999-04-06
SE9200684D0 (sv) 1992-03-06
HU213518B (en) 1997-07-28
SE470255B (sv) 1993-12-20
CA2131445A1 (fr) 1993-09-16
SE9200684L (sv) 1993-09-07
AU3654793A (en) 1993-10-05
ES2120496T3 (es) 1998-11-01
EP0629157A1 (fr) 1994-12-21
ATE167437T1 (de) 1998-07-15
DE69319228T2 (de) 1999-01-07

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