EP0556448A1 - Procédé, dispositif et produit pour détacher - Google Patents

Procédé, dispositif et produit pour détacher Download PDF

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Publication number
EP0556448A1
EP0556448A1 EP92117509A EP92117509A EP0556448A1 EP 0556448 A1 EP0556448 A1 EP 0556448A1 EP 92117509 A EP92117509 A EP 92117509A EP 92117509 A EP92117509 A EP 92117509A EP 0556448 A1 EP0556448 A1 EP 0556448A1
Authority
EP
European Patent Office
Prior art keywords
compressed air
stain
air jet
suction
carrier
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.)
Granted
Application number
EP92117509A
Other languages
German (de)
English (en)
Other versions
EP0556448B1 (fr
Inventor
Hans Leuenberger
Abraham Koller
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.)
THEO KREBS AG
Original Assignee
Biac Holding AG
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 Biac Holding AG filed Critical Biac Holding AG
Publication of EP0556448A1 publication Critical patent/EP0556448A1/fr
Application granted granted Critical
Publication of EP0556448B1 publication Critical patent/EP0556448B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F43/00—Dry-cleaning apparatus or methods using volatile solvents
    • D06F43/002—Spotting apparatus

Definitions

  • the present invention relates to a method for removing dirt stains from a textile fabric, a device for carrying out the method and a means for use in this method.
  • stain cleaning gun To remove dirt from textile fabrics, it is known to spray a stain removal agent onto the soiled area using a so-called stain cleaning gun.
  • the stain remover should loosen the dirt and e.g. rinse out of the fabric of the textile fabric. Chlorinated solvents are often used for this purpose. Then the damp area is blown with air for drying.
  • the aim of the present invention is therefore to provide a method for removing stains, which is preferably used for dense to impermeable textile fabrics, but the use of which is not limited to this, as well as a device for removing stains which is particularly suitable for this method and a means for use in this procedure.
  • the method according to the invention is characterized by the features in claim 1, the device according to the invention by the features in claim 11, and the stain removing agent according to the invention by the features in claim 21.
  • the lateral removal of the stain removing agent in liquid form largely prevents the tissue from being blown through, which is why the pressure can be reduced and, at the same time, the result is less stress on the tissue.
  • Further advantages are that by blowing off the stain remover in liquid form, the textile fabric dries very quickly, which suppresses edge formation, that the loosened dirt is removed together with the liquid stain remover, and that the compressed air can be used cold, which means that the apparatus and energy expenditure is reduced.
  • only about 1/3 of the usually used amount of stain removing agent is required and the preferred stain removing agent can be easily recovered if desired and either used again, cleaned or easily disposed of.
  • a textile fabric which has a soiled area, is positioned on the upper, moisture and air-permeable surface 1 a of a carrier 1.
  • This surface can be, for example, a grid or a sieve.
  • the carrier is preferably connected to a suction blower 3 via a suction pipe 2 and the flat structure can be fixed by applying a suction draft to the carrier in the direction leading away from the flat structure.
  • the permeability of the carrier is desirable because most of the fabrics to be cleaned are somewhat penetrated by the stain removing agent, so that it would accumulate on an impermeable carrier when contaminated.
  • Textile fabrics include both woven and non-woven textiles such as felts and knitwear.
  • an amount of the liquid stain removing agent which is sufficient to dissolve the dirt at least on the surface of the tissue is applied to the soiled area.
  • This can be done, for example, by means of a spray gun or via a combined handle, which can be used for the application of one or more stain removers 10 and suitable for the delivery of compressed air 6, happen (see FIGS. 4 and 5).
  • Suitable stain removers include solvents which are liquid at room temperature and which have such good dirt-dissolving power that they loosen the dirt more quickly than they combine with the fabric itself. This prevents unwanted swelling of the tissue.
  • the highest possible flash point of the stain removing agent is desirable. This is preferably above 40 ° C, particularly preferably above 50 ° C.
  • Paraffin-based stain removers e.g. synthetic isoparaffins such as Cleaner 2000 from Theo Krebs AG, Buchlingen or WBC-19 from Biesterfeld, Hamburg.
  • the stain remover applied to the soiled area is removed using compressed air after a short residence time, usually 1-5 seconds.
  • the compressed air jet is supplied via a special compressed air head 7, the principle of which is described in EP-A-0 325 192, a pulsed application of the stain removing agent not being necessary.
  • it is essential in this method that the outlet opening of the nozzle 6 is pressed against the textile fabric with pressure during the air outlet.
  • the contact pressure depends primarily on the mechanical strength of the textile fabric. While the compressed air jet emerges from the nozzle opening at a very high speed, a pressure builds up between the flat structure and the compressed air head, which is opposite to the contact pressure.
  • the stable support 1 and the nozzle opening 6 can be kept the same size in each area of the nozzle opening in order to ensure regular use of the high-energy air jet over the entire slit-shaped opening. It is particularly favorable if the nozzle head 7 is slightly cambered against the guide surfaces 8a, 8b, which determine the direction of the laterally deflected air jet. This ensures that the nozzle opening is the lowest point of the nozzle head and can therefore be brought into close proximity to the fabric. Bombing with simultaneous breaking of the edges can also minimize the risk of injury to the textile fabric. It is advantageous if guide surfaces 8a, 8b adjoin the nozzle head 7, at least one of which includes an angle 9 when the head is lowered onto the surface of the carrier in the working position.
  • Such guide surfaces can be given, for example, by the shape of the housing or handle 4 which surrounds the nozzle.
  • the compressed air head 7 respectively.
  • the handle 4 is moved transversely to the longitudinal direction of the slot-shaped opening 6.
  • the head be designed for reciprocation. This is achieved with a symmetrical head, in which both guide surfaces form an angle 9 along the slot 8a, 8b when placed vertically on the carrier. This angle is determined by the location to which the air flow and the stain removal agent entrained therefrom above the fabric are to be deflected.
  • the angle is too small, for example below 10 °, the drying effect will be worse. If the angle is too large, from approx. 45 °, the liquid stain remover is deflected too strongly upwards and can affect the operating personnel.
  • the opening of the nozzle 6 is usually opposite the center of the handle 4 for reasons of space slightly shifted. So that back and forth movements can nevertheless be carried out without any problems, it is desirable if the guide surface 8b is adapted to the size of the guide surface 8a by a structure 5 on the handle 4.
  • a nozzle with a slit-shaped opening of 40 mm length and 1 mm width requires a compressor output of at least 4 bar and an output volume of approx. 600 liters / minute.
  • a suction funnel 11 is preferably arranged around the carrier, in the area into which the stain removing agent is deflected during the lateral removal. This should enclose the carrier as closely as possible, but at a distance 12 such that a free one Moving the fabric is possible.
  • the lower surface 13 of the suction funnel is preferably just below the upper surface 1a of the carrier 1, while the upper edge 14 of the suction funnel should be at least so high above the carrier that the stain removal agent which laterally leaves in liquid form is collected by the suction funnel 11.
  • the necessary minimum dimensions of the suction funnel 11 are given by the diameter of the carrier 1, the free space between the carrier and the suction funnel 12 and the deflection angle 9 of the stain removing means determined by the guide surfaces 8a, 8b.
  • the suction funnel 11 is not too high.
  • a diameter of the support 1 of 25 cm, a distance 12 of 1 cm and an angle 9 of 30 ° a funnel height of approx. 15 cm can be used, while at 45 ° more than 25 cm funnel height is necessary.
  • the funnel only encloses around 2/3 of the circumference of the support and ends with end faces 19 is closed.
  • Such a funnel is suitable, for example, when using a nozzle with a slit-shaped opening 6, as is shown in FIGS. 4 and 5, the back and forth movement of the compressed air jet taking place transversely to its axis of symmetry in the case of a symmetrical funnel.
  • the suction funnel 11 is preferably shaped in such a way that the upper funnel surface 15 is pulled up at an incline 16, so that liquid stain removal agent impinging thereon is guided into the funnel.
  • a suction opening 17 is provided in the center of the funnel, through which the suction funnel 11 in a preferred embodiment by means of a suction tube 18 with a suction device, e.g. a suction fan 3 is connected.
  • a suction device e.g. a suction fan 3
  • the rear wall 20 of the funnel is guided with double walls in the area of the suction opening 17, the inner wall 21 being dimensioned and perforated 22 so that the suction effect is regularly applied to the entire suction funnel 11 is distributed.
  • about 40% of the rear wall is guided twice, the wall located inside the funnel having some slit-shaped openings running from top to bottom. So that no larger objects, e.g. Textiles can get into the suction pipe, this can be closed with a grid if necessary.
  • This is preferably attached either in front of the suction opening 17 or between the rear wall 20 and the ends of the inner wall 21.
  • the liquid stain remover which is drawn off via the suction funnel 11 and through the upper surface 1a of the carrier 1 and which makes up up to approximately 90% of the total amount of stain remover is preferably collected in a collecting container 23.
  • the collected stain remover can be used again. More heavily soiled paraffin-based stain removers can be easily disposed of by incineration, or they can be processed using common methods such as filtration, distillation, etc.
  • the gaseous stain remover which usually makes up approx. 10% of the total amount, is directed away via the suction fan 3, for example into the exhaust air, whereby any enrichment in the company can be avoided.
  • the suction tube 18 is guided horizontally and in two parts directly behind the funnel, the two parts being connected via a joint 24 in such a way that the suction funnel can be folded up from the normal, horizontal position into a vertical position. This folding up simplifies the placement of the textile fabric.
  • the carrier 1 is connected to the suction fan 3 via an inclined pipe 2.
  • This suction fan is preferably under a stable work table 25, respectively. in a cabinet, which at the same time contains the collecting container 23 for the used stain-removing agent, which is guided in front of the suction fan 3 from the suction pipes 2, 18 into the collecting container 23.
  • suction pipes for further supports 26, e.g. with other dimensions are necessary.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Refuse Collection And Transfer (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)
EP92117509A 1992-02-21 1992-10-14 Procédé, dispositif et produit pour détacher Expired - Lifetime EP0556448B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH527/92A CH684603A5 (de) 1992-02-21 1992-02-21 Verfahren, Vorrichtung und Mittel zur Fleckentfernung.
CH527/92 1992-02-21

Publications (2)

Publication Number Publication Date
EP0556448A1 true EP0556448A1 (fr) 1993-08-25
EP0556448B1 EP0556448B1 (fr) 1997-03-05

Family

ID=4189051

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92117509A Expired - Lifetime EP0556448B1 (fr) 1992-02-21 1992-10-14 Procédé, dispositif et produit pour détacher

Country Status (4)

Country Link
EP (1) EP0556448B1 (fr)
AT (1) ATE149589T1 (fr)
CH (1) CH684603A5 (fr)
DE (2) DE9213370U1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0853157A1 (fr) * 1997-01-12 1998-07-15 Theo Krebs AG Appareil pour l'enlevement de matières étrangères d'une structure textile plane et sechage de ladite structure

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2619821A (en) * 1947-02-13 1952-12-02 John F Fink Spotting apparatus
DE1635045A1 (de) * 1965-03-05 1971-03-25 Renato Ciravegna Vorrichtung zur hydropneumatischen Entfleckung von Stoffen
US3687729A (en) * 1969-04-17 1972-08-29 Lloyd Earl Winburn Method and apparatus for cleaning materials
EP0325192A1 (fr) * 1988-01-18 1989-07-26 Biac Holding Ag Procédé et dispositif pour détacher une surface textile

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2619821A (en) * 1947-02-13 1952-12-02 John F Fink Spotting apparatus
DE1635045A1 (de) * 1965-03-05 1971-03-25 Renato Ciravegna Vorrichtung zur hydropneumatischen Entfleckung von Stoffen
US3687729A (en) * 1969-04-17 1972-08-29 Lloyd Earl Winburn Method and apparatus for cleaning materials
EP0325192A1 (fr) * 1988-01-18 1989-07-26 Biac Holding Ag Procédé et dispositif pour détacher une surface textile

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0853157A1 (fr) * 1997-01-12 1998-07-15 Theo Krebs AG Appareil pour l'enlevement de matières étrangères d'une structure textile plane et sechage de ladite structure

Also Published As

Publication number Publication date
DE59208126D1 (de) 1997-04-10
EP0556448B1 (fr) 1997-03-05
DE9213370U1 (de) 1992-11-26
ATE149589T1 (de) 1997-03-15
CH684603A5 (de) 1994-10-31

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