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WO1995033577A1 - Procede d'impermeabilisation d'elements metalliques, de preference des grandes bobines, et produit utilise avec ce procede - Google Patents

Procede d'impermeabilisation d'elements metalliques, de preference des grandes bobines, et produit utilise avec ce procede Download PDF

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Publication number
WO1995033577A1
WO1995033577A1 PCT/ES1994/000057 ES9400057W WO9533577A1 WO 1995033577 A1 WO1995033577 A1 WO 1995033577A1 ES 9400057 W ES9400057 W ES 9400057W WO 9533577 A1 WO9533577 A1 WO 9533577A1
Authority
WO
WIPO (PCT)
Prior art keywords
preferably large
seconds
metal elements
immersed
dried
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/ES1994/000057
Other languages
English (en)
Spanish (es)
Inventor
José Refoyo Diego
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 PCT/ES1994/000057 priority Critical patent/WO1995033577A1/fr
Priority to EP94916993A priority patent/EP0736334A1/fr
Publication of WO1995033577A1 publication Critical patent/WO1995033577A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
    • B05D7/16—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies using synthetic lacquers or varnishes
    • B05D7/18—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies using synthetic lacquers or varnishes based on cellulose derivatives
    • 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
    • B05D1/18—Processes for applying liquids or other fluent materials performed by dipping

Definitions

  • the present invention refers to a process for protecting a metal element from corrosion, particularly in the form of a sheet metal coil or package and the product used for this purpose.
  • Metal products are subject to oxidation when exposed to the aggression of environmental agents. This attack is much greater when subjected to saline, acidic, very humid environments, or any other highly corrosive conditions.
  • the object of the present invention is a process that gives rise to a new concept of protection and the product used in said process; for which the idea of protection is based on nature itself, on the ideal conservation conditions of fossilized insects that have remained to this day.
  • This concept of insulating a metallic element from the external oxidizing agents by generating a layer of plastic material allows virtually indefinite storage and. exposure of the protective layer / metal element set to any type of environment.
  • This method is capable of covering all kinds of metal elements, but considering these as a volume and not as a surface, as is the case of a metal coil or a set consisting of sheets.
  • a coil of sheet 12,000 Kg has an area of 12m 2.
  • This sheet metal weight which has a market price of approximately $ 6,100, can be protected from oxidation with 12 kg of plastic, covering the entire surface of the coil with a thickness of 1,000 microns.
  • the procedure consists, basically, in the immersion of the coil or the set of plates in a hot plastic bath that completely covers it, isolating it from the external agents, keeping it like this until it is removed, the protection, when its need for use be immediate
  • the coating is made by a plasticized cellulosic ester that melts at 175 ° -190 ° C resulting in an elastic and transparent film so that the thickness can be regulated by the temperature obtaining a film that is much thinner the higher the temperature. In the case that a thicker layer is desired, the submersion of the piece in the plastic can be repeated.
  • the plastic is composed of 30-33% cellulosic resins, 67-70% of plasticizers and additives that provide the protection qualities of the product. Said plastic is prepared by melting the resins and subsequently adding the plasticizers in a reactor with low agitation at 150 ° C.
  • the coating has an antioxidant element and a non-stick compound and the piece is immersed in the bath for 20 seconds, then dried in room air for 30 seconds.
  • Figure 1 is a perspective and elevational view of a guide bridge with the coil hanging from it and reservoir containing the plastic bath.
  • Figure 2 is an elevation and perspective view in another variant in which a set of plates is arranged instead of a coil.
  • the package or the coil is transported to a bath (4) containing hot plastic according to the described composition at a constant and suitable temperature by any heating system.
  • the necessary tools (3) have been arranged to perfectly lift and move the metal parts.
  • a subsequent cooling of the plastic, protective layer achieves a total embedding of the element until it is completely isolated from the outside.
  • This cooling phase can be carried out by movement in the environment or by artificial measures such as ventilation etc.
  • the protective material contained in the tank (4) can have any shade or color; It is also possible to record in the protection any type of inscription on the characteristics of the product contained or protected; In this way it is not necessary to break the coating to know what product it is and its most notorious characteristics.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Storage Of Web-Like Or Filamentary Materials (AREA)
  • Paints Or Removers (AREA)

Abstract

Procédé d'imperméabilisation d'éléments métalliques, de préférence des grandes bobines, et produit utilisé pour ce procédé, lequel comprend deux phases: une phase d'immersion et une phase de refroidissement/séchage. Dans la première phase d'immersion, l'élément métallique est immergé dans un bain de matière plastique à l'état liquide, pendant une courte durée, mais suffisamment longue pour obtenir une couche durcie de faible épaisseur et une pénétration de l'agent isolant dans les éventuelles fissures du matériau, tandis qu'au cours de la seconde phase la pellicule de plastique est refroidie/séchée par aération ce qui solidifie la couche synthétique créée tout autour du matériau, les deux opérations pouvant être réalisées en utilisant une grue ou des treuils de levage et des outils appropriés à la forme et aux dimensions de l'élément à protéger et, le matériau plastique présentant une tonalité en accord avec les caractéristiques de l'élément, on peut faire des gravures qui correspondent à celles-ci avant et/ou aprés le refroidissement. Le produit d'imperméabilisation des éléments métalliques est un ester cellulosique plastifié qui fond entre 175 °C et 190°C, en formant une pellicule qui est d'autant plus fine et transparente que la température est élevée, la pièce étant immergée dans le bain pendant 20 secondes et étant séchée à l'air ambiant pendant 30 secondes.
PCT/ES1994/000057 1994-06-06 1994-06-06 Procede d'impermeabilisation d'elements metalliques, de preference des grandes bobines, et produit utilise avec ce procede Ceased WO1995033577A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/ES1994/000057 WO1995033577A1 (fr) 1994-06-06 1994-06-06 Procede d'impermeabilisation d'elements metalliques, de preference des grandes bobines, et produit utilise avec ce procede
EP94916993A EP0736334A1 (fr) 1994-06-06 1994-06-06 Procede d'impermeabilisation d'elements metalliques, de preference des grandes bobines, et produit utilise avec ce procede

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/ES1994/000057 WO1995033577A1 (fr) 1994-06-06 1994-06-06 Procede d'impermeabilisation d'elements metalliques, de preference des grandes bobines, et produit utilise avec ce procede

Publications (1)

Publication Number Publication Date
WO1995033577A1 true WO1995033577A1 (fr) 1995-12-14

Family

ID=8284906

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ES1994/000057 Ceased WO1995033577A1 (fr) 1994-06-06 1994-06-06 Procede d'impermeabilisation d'elements metalliques, de preference des grandes bobines, et produit utilise avec ce procede

Country Status (2)

Country Link
EP (1) EP0736334A1 (fr)
WO (1) WO1995033577A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1008876C2 (nl) * 1998-04-14 1999-10-15 Hoogovens Staal Bv Werkwijze voor het afschermen van gestapeld metaalband, aldus afgeschermde stapel en in verspuitbare vorm gebrachte kunststof geschikt voor gebruik bij deze werkwijze.
FR2781703B1 (fr) * 1998-07-30 2000-09-22 Lorraine Laminage Procede de traitement limitant la suroxydation des rives d'une bande de tole laminee a chaud et bobinee en sortie d'un train a bandes

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE428073C (de) * 1924-12-02 1926-04-22 Neuwalzwerk Akt Ges Fa Verfahren zum UEberziehen von Drahtgeweben u. dgl.
US2350744A (en) * 1940-12-19 1944-06-06 Eastman Kodak Co Gelation coating process
US2661307A (en) * 1949-01-19 1953-12-01 Westinghouse Electric Corp Process for applying a completely polymerizable thermosetting resinous composition to an electrical member
US2919208A (en) * 1955-11-03 1959-12-29 Dow Chemical Co Coating metal articles
US2978098A (en) * 1958-04-29 1961-04-04 Republic Foil Inc Coating aluminum foil with silicone
GB1254848A (en) * 1968-01-22 1971-11-24 English Electric Co Ltd Process for coating articles with resin
US3904785A (en) * 1974-01-11 1975-09-09 Gen Electric Method for insulating electric armature windings
US5094891A (en) * 1990-02-02 1992-03-10 A. O. Smith Corporation Vertical dip thin perimeter manufacturing method and facility for coating vehicle structural components

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE428073C (de) * 1924-12-02 1926-04-22 Neuwalzwerk Akt Ges Fa Verfahren zum UEberziehen von Drahtgeweben u. dgl.
US2350744A (en) * 1940-12-19 1944-06-06 Eastman Kodak Co Gelation coating process
US2661307A (en) * 1949-01-19 1953-12-01 Westinghouse Electric Corp Process for applying a completely polymerizable thermosetting resinous composition to an electrical member
US2919208A (en) * 1955-11-03 1959-12-29 Dow Chemical Co Coating metal articles
US2978098A (en) * 1958-04-29 1961-04-04 Republic Foil Inc Coating aluminum foil with silicone
GB1254848A (en) * 1968-01-22 1971-11-24 English Electric Co Ltd Process for coating articles with resin
US3904785A (en) * 1974-01-11 1975-09-09 Gen Electric Method for insulating electric armature windings
US5094891A (en) * 1990-02-02 1992-03-10 A. O. Smith Corporation Vertical dip thin perimeter manufacturing method and facility for coating vehicle structural components

Also Published As

Publication number Publication date
EP0736334A1 (fr) 1996-10-09

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