EP0194242B1 - Method for removing paint - Google Patents

Method for removing paint Download PDF

Info

Publication number
EP0194242B1
EP0194242B1 EP19860850059 EP86850059A EP0194242B1 EP 0194242 B1 EP0194242 B1 EP 0194242B1 EP 19860850059 EP19860850059 EP 19860850059 EP 86850059 A EP86850059 A EP 86850059A EP 0194242 B1 EP0194242 B1 EP 0194242B1
Authority
EP
European Patent Office
Prior art keywords
paint
agent
rinsing agent
supplied
rinsing
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
EP19860850059
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0194242A2 (en
EP0194242A3 (en
Inventor
Per Arne Ivarsson
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.)
Spina Te Nykoeping Zweden AB
Original Assignee
Electrolux AB
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 Electrolux AB filed Critical Electrolux AB
Publication of EP0194242A2 publication Critical patent/EP0194242A2/en
Publication of EP0194242A3 publication Critical patent/EP0194242A3/en
Application granted granted Critical
Publication of EP0194242B1 publication Critical patent/EP0194242B1/en
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
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/10—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by other chemical means
    • 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

Definitions

  • This invention relates to a method for removing old paint layer or layers from a surface by means of a suction nozzle which is connected by a hose to a vacuum source wherein a paint dissolving agent is supplied to the paint layer or layers and is allowed to act for a period which is sufficiently long to dissolve the paint layer or layers.
  • a method of this kind is known from US-A-932 738.
  • the purpose of this invention is to achieve a method for removing paint which has not the drawbacks which the known methods have.
  • the purpose has been achieved by means of a method in which a paint dissolving agent is supplied on a paint layer on a surface and is allowed to act a period until the layer has been dissolved.
  • the method is characterized in that a rinsing agent either being a liquid or warm air, is supplied to the dissolved paint by means of the nozzle, the mixture of paint and rinsing agent being immediately sucked away after the supply of the rinsing agent through the nozzle and through the hose into a collecting container. It has proved to be advantageous to combine the chemical treatment with a mechanical treatment of the surface since that supports the fragmentation and loosening of the paint from the surface.
  • the mechanical treatment can for instance be made by scraping means, brushes or the like which are applied on the nozzle which is used for sucking up the mixture.
  • Supply of the rinsing agent should, when removing certain types of paint, preferably be directed to the place of the nozzle where the paint is collected before it is sucked away.
  • the choice of rinsing agent depends on the type of paint. Plastic paint usually demands chemical agents of different types and in some cases also warm air could be used whereas water can be used for alcalic paint such as oil paint. The temperature of the water should in that case be more than 40°C.
  • An after treatment agent can be applied to the surface at the same time as the dissolved paint layer is sucked away. Such an after treatment agent is used to remove remainders of the paint solving agent and stabilize the surface after removing the paint so that a new paint layer, can be applied on the surface without being damaged by any remaining paint dissolving agent.
  • the rinsing water is as a rule applied at a comparatively low pressure which is choosen with respect to the character of the surface i.e. so that damages do not arise on the surface and so that not to large water quantities are pressed into any opening in the surface.
  • the dissolved paint is transported to a separation unit in which the paint dissolving agent together with the paint is separated from the water. Then the paint dissolving agent is separated and reactivated in an activator unit so that it can again be used for dissolving paint layers.
  • This invention has the advantage that the bed, that is the surface on which the paint is supplied, is spared. Also sensitive beds as for instance bad plaster can simply be cleaned without damages. Further the method is very rapid and gives a bed which is dry, stabilized and which can immediately be used for repainting. By the invention also maximum cleanness and stability is achieved. It should be pointed out that also the outer porous structure of the surface by this method can be effectively cleaned.
  • the method is very suitable for removing paint indoors. Scrawling is easily removed and also fire classified paint when repainting corridors, stair- wells and other evacuation rooms. (The fire classification presupposes a certain maximum paint layer).
  • the method makes a completely controlled and environment friendly use possible. It is further possible to reuse a reactivated paint removing agent vehicle makes the method economically competitive.
  • FIG 10 is a surface on which a paint layer 11 is applied.
  • a paint dissolving agent is sprayed on the paint layer 11 and is allowed to act for some time.
  • a nozzle 12 is moved on the surface, the nozzle being provided with a fixed or movable brush for mechanical treatment of the surface.
  • the nozzle 12 is, by means of a hose 13, connected to a container 14 which in turn is connected to a vacuum source 15.
  • the nozzle is also, by means of a hose 16, connected to a rinsing agent container 17 from which a rinsing agent is transported to the nozzle in the hose 16.
  • the rinsing agent container can be provided with means, not shown, for heating the rinsing agent.
  • the rinsing agent is water it should have a temperature which is more than 40°C and preferably is 70 - 90°C.
  • the rinsing agent is mixed with the dissolved paint remainder and the paint removal agent and is sucked away in the hose 13 to the container 14 in which it is collected.
  • the mixture of the paint dissolving and rinsing agent in the container 14 can then be transported to a cleaning plant 18 from which the rinsing agent is separated and leaves via an outlet 19 and as an alternative is brought back to the rinsing agent container 17.
  • the paint dissolving agent and the dissolved paint might also be transported to a separation unit 20 in which the paint removing agent is separated from the paint remainders, these remainders, leaving through an outlet 21 and later being taken care of in a separate plant for destruction of waste which is dangerous for the environment.
  • the paint removing agent is transported to an activator unit 22 in which the removal agent is reactivated and leaves through an outlet 23 so that it can again be used for removing paint.
  • the rinsing container 17 is, via a hose, connected to a container 24 for an after treatment agent.
  • This agent is supplied to the rinsing water during the last treatment of the wall in order to give the surface a pH-value which is about 7.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Paints Or Removers (AREA)
  • Cleaning In General (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Road Signs Or Road Markings (AREA)
EP19860850059 1985-03-01 1986-02-20 Method for removing paint Expired EP0194242B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8500998A SE8500998D0 (sv) 1985-03-01 1985-03-01 Fergborttagningsforfarande
SE8500998 1985-03-01

Publications (3)

Publication Number Publication Date
EP0194242A2 EP0194242A2 (en) 1986-09-10
EP0194242A3 EP0194242A3 (en) 1987-06-24
EP0194242B1 true EP0194242B1 (en) 1989-10-25

Family

ID=20359320

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19860850059 Expired EP0194242B1 (en) 1985-03-01 1986-02-20 Method for removing paint

Country Status (7)

Country Link
EP (1) EP0194242B1 (fi)
JP (1) JPS61222581A (fi)
DE (1) DE3666546D1 (fi)
DK (1) DK167913B1 (fi)
FI (1) FI860861A (fi)
NO (1) NO168932C (fi)
SE (1) SE8500998D0 (fi)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11111372B2 (en) 2017-10-09 2021-09-07 Owens Corning Intellectual Capital, Llc Aqueous binder compositions
US11136451B2 (en) 2017-10-09 2021-10-05 Owens Corning Intellectual Capital, Llc Aqueous binder compositions
US11813833B2 (en) 2019-12-09 2023-11-14 Owens Corning Intellectual Capital, Llc Fiberglass insulation product

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE464804B (sv) * 1987-10-07 1991-06-17 Electrolux Ab Munstycke med slang foer bortsugning av upploesta och bortskrapade faergrester
JPH05500482A (ja) * 1990-08-11 1993-02-04 ドイチェ・ルフトハンザ・アーゲー 表面の塗料皮膜の除去法
DE19539394A1 (de) * 1994-10-13 1996-04-25 Lobeck Concept Ag Farb-, Lack- und Folienablösemittel sowie Verwendung desselben
DE19747838C2 (de) * 1997-10-19 2001-07-12 Gp Granulate Pneumatic Geraete Verfahren und Vorrichtung zum trockenen Entfernen von Beschichtungen, Graffiti oder sonstigen oberflächlichen Verunreinigungen
GB2362314A (en) * 2000-05-16 2001-11-21 Harold Walmsley Method and apparatus for cleaning up graffiti
US9355100B2 (en) * 2008-09-22 2016-05-31 Qualcomm Incorporated Methods and apparatus for reconciling versions of media context lists in communications networks

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US932738A (en) * 1909-05-19 1909-08-31 John M Wilson Process of removing finish.
JPS56101900A (en) * 1980-01-16 1981-08-14 Osaka Shiyariyou Kogyo Kk Method and device for exfoliating film
JPS57207580A (en) * 1981-06-12 1982-12-20 Tokyo Isuzu Jidosha Kk High pressure washing car for sewer pipe which purifies and reuses water containing filth in sewer pipe
DE3133809A1 (de) * 1981-08-25 1983-03-10 Ernest 1009 Pully Ihringer Vorrichtung zum abbeizen von farbe von gegenstaenden
JPS59192654A (ja) * 1983-04-14 1984-11-01 Tokyo Tatsuno Co Ltd 洗車装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11111372B2 (en) 2017-10-09 2021-09-07 Owens Corning Intellectual Capital, Llc Aqueous binder compositions
US11136451B2 (en) 2017-10-09 2021-10-05 Owens Corning Intellectual Capital, Llc Aqueous binder compositions
US11813833B2 (en) 2019-12-09 2023-11-14 Owens Corning Intellectual Capital, Llc Fiberglass insulation product

Also Published As

Publication number Publication date
FI860861A (fi) 1986-09-02
DE3666546D1 (en) 1989-11-30
SE8500998D0 (sv) 1985-03-01
DK167913B1 (da) 1994-01-03
EP0194242A2 (en) 1986-09-10
JPS61222581A (ja) 1986-10-03
FI860861A0 (fi) 1986-02-28
NO168932B (no) 1992-01-13
NO860747L (fi) 1986-09-02
EP0194242A3 (en) 1987-06-24
DK87786A (da) 1986-09-02
DK87786D0 (da) 1986-02-25
NO168932C (no) 1992-04-22

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