US3681950A - Apparatus for the continuous wet-treatment of textile material - Google Patents

Apparatus for the continuous wet-treatment of textile material Download PDF

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Publication number
US3681950A
US3681950A US808931A US3681950DA US3681950A US 3681950 A US3681950 A US 3681950A US 808931 A US808931 A US 808931A US 3681950D A US3681950D A US 3681950DA US 3681950 A US3681950 A US 3681950A
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United States
Prior art keywords
baths
roller
suction
treatment
textile material
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 - Lifetime
Application number
US808931A
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English (en)
Inventor
Heinz Fleissner
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.)
Vepa AG
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Vepa 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
Priority claimed from DE19681760004 external-priority patent/DE1760004C3/de
Application filed by Vepa AG filed Critical Vepa AG
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Publication of US3681950A publication Critical patent/US3681950A/en
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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
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
    • D06P1/90—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using dyes dissolved in organic solvents or aqueous emulsions thereof
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B3/00—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating
    • D06B3/10—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating of fabrics
    • D06B3/20—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating of fabrics with means to improve the circulation of the treating material on the surface of the fabric
    • D06B3/201—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating of fabrics with means to improve the circulation of the treating material on the surface of the fabric the treating material being forced through the textile material
    • D06B3/203—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating of fabrics with means to improve the circulation of the treating material on the surface of the fabric the treating material being forced through the textile material by suction, e.g. by means of perforated drums
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B5/00—Forcing liquids, gases or vapours through textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing impregnating
    • D06B5/02—Forcing liquids, gases or vapours through textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing impregnating through moving materials of indefinite length
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
    • D06L1/00—Dry-cleaning or washing fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods
    • D06L1/02—Dry-cleaning or washing fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods using organic solvents
    • D06L1/04—Dry-cleaning or washing fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods using organic solvents combined with specific additives
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
    • D06L4/00—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs
    • D06L4/10—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which develop oxygen
    • D06L4/17—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which develop oxygen in an inert solvent
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M23/00—Treatment of fibres, threads, yarns, fabrics or fibrous goods made from such materials, characterised by the process
    • D06M23/10—Processes in which the treating agent is dissolved or dispersed in organic solvents; Processes for the recovery of organic solvents thereof
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S68/00—Textiles: fluid treating apparatus
    • Y10S68/903—Perforated drum and continuous textile feed and discharge

Definitions

  • the present disclosure is directed to a process and apparatus for the continuous wet-treatment of textile materials which comprises a container means containing a treatment liquid, inlet means for introducing the material to be treated to the container means, at least one permeable roller means rotatably disposed in the container means and at least partially submerged in the treatment liquid, at least one drainage means connected in series with respect to the roller means, said drainage means being provided with a guide roller means, and outlet means for removing the material from the container means.
  • the present invention relates to a method and apparatus for the continuous wet-treatment of textile material, particularly material lengths of filaments which are sensitive to traction, such as tows. More specifically, the present invention is directed to the use of a liquid container containing at least one roller means through which the treatment liquor circulates, preferably a sieve drum roller which at least partially dips into the treating liquor, for example a dyeing liquor. At least one drainage device is connected in series or in tandem with respect to the sieve drum roller.
  • Apparatus are known in the art which comprise permeable rollers which dip into a treatment liquor. These rollers generally have a perforated jacket which is covered in some cases with a sieve or a screen structure.
  • the liquor flows through the roller jacket from the outside to the inside thereof.
  • the circulation may be produced by subjecting the roller to a suction draft, or by maintaining a higher liquor level outside of the roller than within said roller. Due to the circulation of the treatment liquor, the material being treated is held to the permeable roller and conveyed on the roller through the treatment liquor. At the same time, the treating liquor circulates through the material, for example textile material, thereby flowing around each individual fiber. As a result, an extremely sensitive, but at the same time careful and protective liquid treatment is attained.
  • a pressing device e.g. squeeze roller means is generally connected in series or in tandem with respect to each bath.
  • a suction device instead of a squeeze roller.
  • the known suction devices comprise a stationary pipe and the textile material is drawn over the suction slit of this pipe. Relatively high traction forces are produced thereby so that suction means of this type are suitable only for materials which are adapted to withstand a high traction force or stress. Textiles which are sensitive to traction, such as thin non-Wovens, woven and knitted articles, or tows, cannot be dehydrated with such suction devices.
  • the textile material is freely guided from the sieve roller to the suction device.
  • the free path or distance may be one meter or more. Because of the returning or backwashing liquid, a water trap is formed within the material in the free path which results in a further stretching of the articles and a tearing of the capillaries.
  • the tows are cut into piles and the cut fibers are passed on feeding elements through the various baths and are introduced onto sieve bands with individual treating stages.
  • An object of the present invention is to avoid the prior art disadvantages in the wet-treatment of materials, for example, textile materials.
  • Another object of the present invention is to effectively remove undesirable constituents from textile fibers during the wet-treatment process.
  • a drainage device for the material which comprises a guide roller which is provided directly behind the sieve roller disposed in the treatment liquor. It is advantageous to provide the guide roller as a permeable suction roller having at least a narrow suction area extending over the entire working width, and/or to combine the guide roller with a squeeze roller.
  • suction roller may be directly coordinated to two adjacent rollers in the treating liquor, preferably the rollers of two adjacent baths.
  • the guide roller and, respectively, the suction roller be given a diameter approximately of the same magnitude as the sieve drum roller which dips into the treating liquor.
  • a minimum washing time is required for rinsing the sheaves of filaments, particularly tows of polyacrylonitrile, polyamides and similar fibers.
  • these washing or rinsing times may be substantially shortened, i.e. that the diffusion from the interior of the fibers may be considerably accelerated when the head or gradient between the fibers and the liquid surrounding the fibers is as great as possible. This effect may be achieved in that the washing or rinsing liquor is drawn through the tows.
  • the treatment liquor is gradually enriched at the sheaves of fibers with the substances to be rinsed out, whereby the concentrating head or gradient is reduced and the rinsing times are correspondingly lengthened.
  • the treating liquor is passed transversely through the sheaves of fibers, the substances to be washed out and adhering to the sheaves of fibers, which can be mechanically removed, can be washed out very rapidly and thoroughly.
  • the material may be passed over sieve drums through which the treatment liquid circulates.
  • the liquid may be either drawn through or pressed therethrough.
  • the textile material particularly the sheaves of fibers
  • the textile material may be drawn through flat tublike liquid containers or reservoirs, and the liquor may essentially stand still in these containers.
  • the sieve drum baths may be disposed in one bath.
  • the sieve drums may then be superimposed with respect to each other.
  • the liquid drawn in by one sieve drum may be passed into the second drum and may, from there, be pressed outwardly. It is thus possible to obtain a circulation through two or more sieve drums with the aid of a single pumping device and thus to assure the flow of the liquor through the material disposed on these drums.
  • the residence baths may be provided either as flat tub-like containers or as U-shaped containers. It is additionaly possible to combine such U-shaped baths with flat baths.
  • FIG. 1 is a longitudinal, cross-sectional view of an apparatus according to the present invention
  • FIG. 2 is a cross-sectional view of the apparatus shown in FIG. 1;
  • FIG. 3 is a longitudinal, crosssectional view of a different embodiment of the present invention.
  • FIG. 4 is a longitudinal, cross-sectional view of still another embodiment of the present invention.
  • FIG. 5 shows a fine wire mesh screen which can be provided over the surface of the jacket of the suction roller
  • FIG. 6 shows the arrangement of a plurality of sieve drum means which are superimposed with respect to each other.
  • the apparatus according to FIGS. 1 and 2 comprises a container 1 which is subdivided by means of a web portion 2 into two baths 3 and 4. Each bath is provided with a sieve drum means 5 through which liquid flows.
  • the textile material 6 to be treated is fed via a roller 7 to a sieve drum 5 where it is penetrated by the liquid disposed on the outside of the sieve drum, due to the difference of the level of the treatment liquor on the outside and inside of said sieve drum.
  • a suction roller 8 is disposed at the transition point from bath 3 to bath 4, which is located outside of the treating liquor.
  • the suction roller as illustrated in the drawing has two suction areas 9 for removing the liquid adhering to the material 6.
  • the material 6 may be either a delicate knitted material or a delicate nonwoven product. However, it may also consist of sheaves of fibers, for example yarns or tows.
  • the second bath 4 is constructed in a manner similar to bath 3.
  • the suction roller 8 which is connected in tandem with respect to this bath has but one suction area 9. Generally speaking, however, the construction will be made such that the .apparatus will be provided with either suction rollers having one suction area, or with general rollers having two or more suction areas.
  • a stationary baffle 10 which interrupts the flow of the treatment medium except in the suction areas 9.
  • the sieve rollers 5 are open at one end face thereof. Laterally disposed at this end face is a liquid collecting reservoir'll which has an intermediate bottom 12. Arranged in the intermediate bottom 12 in an opening 13 is a pump 14. The pump motor 15 is secured to a traverse rod 16 outside of the treating liquor. This traverse rod 16 also carries, in the embodiment shown, the suction device 17 with the motor 18 for the suction roller 8.
  • the apparatus illustrated in FIG. 3 is constructed in a manner similar to that shown in FIGS. 1 and 2. The same elements have therefore been designated with like reference numerals.
  • the sieve drum rollers 5 are provided as suction rollers which are disposed in the liquid of the treatment bath.
  • a pump 19 is provided for each sieve drum roller 5 at one of its faces. This pump serves for producing the induced suction draft.
  • the suction rollers 8 are partially disposed in the treatment liquor and separate, together with the web portions 20, the various baths from one another. Such baths are also well suited for the solvent treatment.
  • cover means or suction hood 24 can be provided.
  • the textile material 6, for example the sheaves of fibers, is initially pre-washed in baths 3 and 4.
  • a roller 7 from which the material 6 is conveyed to the sieve drum 5.
  • a guide roller 8' is arranged between baths'3 and 4 to which a squeeze roller 21 is coordinated.
  • the textile material 6 passes thereafter into flat tube-like baths 22 where it is guided through the treatment liquor by way of rollers 23.
  • All of the treating baths 3, 4 and 22 have a common suction hood 24 which facilitates the removal of vapors and gases rising from the baths.
  • FIG. 5 there is shown a conventional construction of a portion of the jacket 30 of a suction roller having a surface which is covered with a fine wire mesh screen 31.
  • FIG. 6 illustrates a treatment bath wherein a plurality of sieve drum means are provided and the sieve drum means are disposed in a superimposed arrangement.
  • Sieve drum means 5 are suction drums; whereas sieve drum means 32 are blower drums.
  • a permeable suction roller, which is not shown, is disposed above and to the right of the last drum means 32.
  • the materials which can be treated by the apparatus of the present invention include any of the natural or synthetic fibers.
  • the natural fibers can include cotton, wool, silk, cellulose, etc.
  • the synthetic fibers may comprise synthetic polymers such as polyolefins, e.g., polyethylene, polypropylene, etc., polyarnides, e.g., Nylon 6 obtained by the condensation of caprolactarn, Nylon 66 obtained by the condensation of hexamethylenediamine with adipic acid, etc., polyesters, e.g., polyethylene terephthalate, etc., phenolic resins, e.g., phenol formaldehyde resins, urea formaldehyde resins, etc., polyvinyl materials, e.g., polyvinyl chloride, polyvinyl acetate, etc., acrylate resins, e.g., polymethylmethacrylate, copolymers of these materials with one another or with ehtylen
  • 'An apparatus for the continuous wet-treatment of textile materials which comprises a container means containing a treatment liquid, inlet means for introducing a textile material to be treated to the container means, at least one sieve drum means rotatably disposed in the container means and at least partially submerged in the treatment liquid, at least one drainage means connected in series with said drum means, said drainage means comprising a guide roller means including a permeable rotatable suction roller having at least one suction area through which liquid is drained from the textile material, and outlet means for removing the material from the container means.
  • squeeze rollers are operatively associated with the rotatable suction rollers to squeeze treatment liquid from the textile material in contact with said suction roller.
  • suction roller is positioned between and operatively associated with two adjacent sieve drum means of two adjacent baths.
  • each of said treatment baths is provided with a plurality of sieve drum means which are superimposed with respect to each other.
  • suction roller is provided with a jacket which has a free cross sectional area greater than 50 percent and a fine wire mesh screen is provided over the surface of the jacket of the suction roller.
  • suction roller has a diameter substantially the same as the sieve drum means.
  • the residence bath container means comprises a plurality of tube-like baths for the conveyance of the textile material therethrough.
  • roller means are associated with the tube-like baths for guiding the textile material therethrough.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Materials Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
US808931A 1968-03-20 1969-03-20 Apparatus for the continuous wet-treatment of textile material Expired - Lifetime US3681950A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19681760004 DE1760004C3 (de) 1968-03-20 Verfahren und Vorrichtung zum kontinuierlichen Naßbehandeln von Fadenscharen
DE19691909357 DE1909357C3 (de) 1969-02-25 Vorrichtung zum Nalibehandeln von bahnförmigen, zugempfindlichen Gütern

Publications (1)

Publication Number Publication Date
US3681950A true US3681950A (en) 1972-08-08

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US808931A Expired - Lifetime US3681950A (en) 1968-03-20 1969-03-20 Apparatus for the continuous wet-treatment of textile material

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US (1) US3681950A (en:Method)
BE (1) BE730145A (en:Method)
FR (1) FR2004356A1 (en:Method)
GB (2) GB1214263A (en:Method)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3864948A (en) * 1973-04-19 1975-02-11 Daiwa Machinery Works Ltd Suction drum washer
US3922737A (en) * 1972-03-29 1975-12-02 Hoechst Ag Process for the continuous wet-treatment under pressure
US4805425A (en) * 1986-11-20 1989-02-21 Vepa Aktiengesellschaft Dewatering device using suction removal of liquid
US20010008103A1 (en) * 1995-05-01 2001-07-19 Gasparrini C. Robert Soak on site and soak on press cleaning system and method of using same
US6634192B2 (en) * 2001-02-12 2003-10-21 Pti Advanced Filtration, Inc. System and method for flushing a membrane web using a vacuum roller
US20050199017A1 (en) * 2004-03-13 2005-09-15 Wilson Rodney W. Tile sponge washing and conditioning apparatus
US20060000246A1 (en) * 2004-03-13 2006-01-05 Wilson Rodney W Tile sponge washing and conditioning apparatus
US20060283212A1 (en) * 2004-03-13 2006-12-21 Wilson Rodney W Tile sponge washing and conditioning apparatus

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE610515C (de) * 1932-11-19 1935-03-12 Gompara G M B H Verfahren und Vorrichtung zum Bleichen, Faerben und Appretieren von Gummibaendern, Litzen, Tressen u. dgl.
GB609728A (en) * 1944-10-06 1948-10-06 Williams Sumner Henry Process and apparatus for the dyeing, bleaching and other liquid treatment of textile fabrics
US3011328A (en) * 1957-10-29 1961-12-05 Fleissner G M B H Fa Apparatus for liquid treatment of loose fibrous materials
US3025691A (en) * 1958-03-31 1962-03-20 Fleissner & Sohn G M B H & Co Apparatus for continuous wet treatment of fibrous material in bat and like formation
FR1353600A (fr) * 1963-01-17 1964-02-28 R Mathelin Ets Machine à traiter les pièces de tissus
US3199126A (en) * 1961-10-18 1965-08-10 Unisearch Ltd Treatment of fibre assemblies with fluids
US3362079A (en) * 1964-04-22 1968-01-09 Fur Patentdienst Anstalt Drier and process of drying
US3374646A (en) * 1963-08-26 1968-03-26 Patentdienst Anst Apparatus for treating textile fabrics and the like
US3410119A (en) * 1964-11-21 1968-11-12 Fur Patentdienst Anstalt Apparatus for the wet-treatment of materials
US3412474A (en) * 1965-12-11 1968-11-26 Vepa Ag Apparatus for the treatment of textile material

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE610515C (de) * 1932-11-19 1935-03-12 Gompara G M B H Verfahren und Vorrichtung zum Bleichen, Faerben und Appretieren von Gummibaendern, Litzen, Tressen u. dgl.
GB609728A (en) * 1944-10-06 1948-10-06 Williams Sumner Henry Process and apparatus for the dyeing, bleaching and other liquid treatment of textile fabrics
US3011328A (en) * 1957-10-29 1961-12-05 Fleissner G M B H Fa Apparatus for liquid treatment of loose fibrous materials
US3025691A (en) * 1958-03-31 1962-03-20 Fleissner & Sohn G M B H & Co Apparatus for continuous wet treatment of fibrous material in bat and like formation
US3199126A (en) * 1961-10-18 1965-08-10 Unisearch Ltd Treatment of fibre assemblies with fluids
FR1353600A (fr) * 1963-01-17 1964-02-28 R Mathelin Ets Machine à traiter les pièces de tissus
US3374646A (en) * 1963-08-26 1968-03-26 Patentdienst Anst Apparatus for treating textile fabrics and the like
US3362079A (en) * 1964-04-22 1968-01-09 Fur Patentdienst Anstalt Drier and process of drying
US3410119A (en) * 1964-11-21 1968-11-12 Fur Patentdienst Anstalt Apparatus for the wet-treatment of materials
US3412474A (en) * 1965-12-11 1968-11-26 Vepa Ag Apparatus for the treatment of textile material

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3922737A (en) * 1972-03-29 1975-12-02 Hoechst Ag Process for the continuous wet-treatment under pressure
US3864948A (en) * 1973-04-19 1975-02-11 Daiwa Machinery Works Ltd Suction drum washer
US4805425A (en) * 1986-11-20 1989-02-21 Vepa Aktiengesellschaft Dewatering device using suction removal of liquid
US6849124B1 (en) * 1995-05-01 2005-02-01 Baldwin Graphics Systems, Inc. Soak on site and soak press cleaning system and method of using same
US20010045218A1 (en) * 1995-05-01 2001-11-29 Gasparrini C. Robert Soak on site and soak on press cleaning system and method of using same
US20010008103A1 (en) * 1995-05-01 2001-07-19 Gasparrini C. Robert Soak on site and soak on press cleaning system and method of using same
US7014716B2 (en) 1995-05-01 2006-03-21 Baldwin Graphic Systems Inc. Method of cleaning a cylinder of a printing press
US7069854B2 (en) 1995-05-01 2006-07-04 Baldwin Graphic Systems Inc. Soak on site and soak on press cleaning system and method of using same
US6634192B2 (en) * 2001-02-12 2003-10-21 Pti Advanced Filtration, Inc. System and method for flushing a membrane web using a vacuum roller
US20050199017A1 (en) * 2004-03-13 2005-09-15 Wilson Rodney W. Tile sponge washing and conditioning apparatus
US20060000246A1 (en) * 2004-03-13 2006-01-05 Wilson Rodney W Tile sponge washing and conditioning apparatus
US20060283212A1 (en) * 2004-03-13 2006-12-21 Wilson Rodney W Tile sponge washing and conditioning apparatus
US7353670B2 (en) * 2004-03-13 2008-04-08 Wilson Rodney W Tile sponge washing and conditioning apparatus
US7461525B2 (en) 2004-03-13 2008-12-09 Wilson Rodney W Tile sponge washing and conditioning apparatus

Also Published As

Publication number Publication date
GB1236539A (en) 1971-06-23
GB1214263A (en) 1970-12-02
BE730145A (en:Method) 1969-09-22
FR2004356A1 (en:Method) 1969-11-21

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