FR2696415A1 - Protection of metal body surface - is achieved by moulding polyurethane plaque, grooving one surface and bonding this to acid cleaned metal surface under pressure with polyurethane base adhesive - Google Patents

Protection of metal body surface - is achieved by moulding polyurethane plaque, grooving one surface and bonding this to acid cleaned metal surface under pressure with polyurethane base adhesive Download PDF

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Publication number
FR2696415A1
FR2696415A1 FR9211760A FR9211760A FR2696415A1 FR 2696415 A1 FR2696415 A1 FR 2696415A1 FR 9211760 A FR9211760 A FR 9211760A FR 9211760 A FR9211760 A FR 9211760A FR 2696415 A1 FR2696415 A1 FR 2696415A1
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France
Prior art keywords
plate
polyurethane
paste
plaque
protected
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Pending
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FR9211760A
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French (fr)
Inventor
Es Willy
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Individual
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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 FR9211760A priority Critical patent/FR2696415A1/en
Publication of FR2696415A1 publication Critical patent/FR2696415A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
    • B29C63/48—Preparation of the surfaces
    • B29C63/486—Preparation of the surfaces of metal surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
    • B29C63/02—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor using sheet or web-like material
    • B29C63/16—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor using sheet or web-like material applied by "rubber" bag or diaphragm
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C41/12—Spreading-out the material on a substrate, e.g. on the surface of a liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
    • B29C59/02—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2075/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0058—Inert to chemical degradation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7126—Containers; Packaging elements or accessories, Packages large, e.g. for bulk storage

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Laminated Bodies (AREA)

Abstract

Protection for the surface of a metal body is formed by: a mixer (3) for polyurethane liquid (1) and hardener (2) to make a viscous paste; mould the paste on part (4) of a surface (5) corresponding to the surface (7) to be protected; partly cure the paste to a relatively rigid plaque; make grooves (9) on the moulded part (4) of the plaque; let the plaque fully cure; stick the plaque to the surface with a polyurethane based glue so that it forms a uniform thickness in the grooves (9). Pref. the polyurethane used is e.g. Elasturane (R.T.M. of B.A.S.F). USE/ADVANTAGE - To protect metal surfaces from mechanical abrasion, chemical and thermal attack. Partic. transport vessels for various elements. Allows simple low cost protection of all or part of metal bodies to give a larger life.

Description

La présente invention concerne les procédés de réalisation d'une protection d'au moins une portion de la surface d'un corps métallique ou analogue contre les agressions mécaniques, chimiques, thermiques ou analogues, qui trouvent une application particulièrement avantageuse dans la réalisation des protections des surfaces définissant des volumes aptes à contenir et/ou transporter des éléments de toute nature. The present invention relates to methods of producing protection for at least a portion of the surface of a metallic body or the like against mechanical, chemical, thermal or similar attacks, which find a particularly advantageous application in the production of protections. surfaces defining volumes capable of containing and / or transporting elements of all kinds.

Il existe en effet de nombreux types de volumes aptes à contenir et/ou transporter des éléments de toute nature, par exemple des conteneurs disposés à demeure dans des usines ou sur des chantiers, les bennes de certains véhicules de transport, etc. qui, bien que réalisés en matières métalliques, ont une durée de vie, dans certains cas, très courte. There are indeed many types of volumes capable of containing and / or transporting elements of all kinds, for example containers permanently placed in factories or on construction sites, the skips of certain transport vehicles, etc. which, although made of metallic materials, have a life, in some cases, very short.

Ces conteneurs et bennes se dégradent en effet très rapidement, ainsi d'ailleurs que les éléments périphériques intervenant dans leurs fonctionnement, transport et utilisation, car ils subissent des agressions mécaniques, par exemple s'ils reçoivent des objets lourds et pointus comme des pierres, chimiques, par exemple s'ils sont utilisés pour contenir des déchets qui, de façon connue, libèrent ou comportent des produits liquides corrosifs, ou thermiques, par exemple s'ils transportent des objets ou produits qui sont à des températures élevées. These containers and skips degrade very quickly, as well as the peripheral elements involved in their operation, transport and use, because they are subjected to mechanical attack, for example if they receive heavy and pointed objects like stones, chemical, for example if they are used to contain waste which, in a known manner, releases or contains corrosive liquid products, or thermal, for example if they transport objects or products which are at high temperatures.

t:a présente invention a ainsi pour but de remédier aux inconvénients mentionnés ci-avant, en mettant en oeuvre un procédé de réalisation d'une protection d'au moins une portion de la surface d'un corps métallique ou analogue contre les agressions mécaniques, chimiques, thermiques ou analogues, dont la mise en oeuvre soit facile et d'un prix de revient relativement faible et qui donne aux corps métalliques ainsi protégés une durée de vie nettement plus longue. t: a present invention thus aims to remedy the drawbacks mentioned above, by implementing a method of providing protection of at least a portion of the surface of a metal body or the like against mechanical attack , chemical, thermal or the like, whose implementation is easy and of a relatively low cost price and which gives the metal bodies thus protected a significantly longer service life.

Plus précisément, la présente invention a pour objet un procédé de réalisation d'une protection d'au moins une portion de la surface d'un corps métallique, caractérisé par le fait qu'il consiste:
- à mélanger du polyuréthane liquide avec un agent polymérisant pour réaliser une pâte relativement visqueuse,
- à mouler ladite pâte sur un support pour lui donner, sur une partie de sa surface, une forme sensiblement complémentaire de la portion de surface du corps à protéger,
- à laisser polvmériser partiellement ladite pâte jusqu'à ce qu'elle se présente sous la forme d'une plaque relativement rigide,
- à réaliser des rainures sur ladite partie de surface moulée de ladite plaque,
- à laisser polymériser complètement la pâte de ladite plaque jusqu'à sa dureté définitive, et
- à coller ladite plaque sur ladite portion de surface dudit corps au moyen d'une colle à base de polyuréthane, de façon que ladite partie de surface moulée et rainurée de la plaque et ladite portion de surface dudit corps soient mises en regard l'une de l'autre et que ladite colle soit posée entre elles en une couche sensiblement uniforme.More specifically, the subject of the present invention is a method of producing protection for at least a portion of the surface of a metal body, characterized in that it consists:
- mixing liquid polyurethane with a polymerizing agent to produce a relatively viscous paste,
- molding said paste on a support to give it, on a part of its surface, a shape substantially complementary to the surface portion of the body to be protected,
to allow said paste to partially polymerize until it is in the form of a relatively rigid plate,
- making grooves on said molded surface portion of said plate,
to allow the dough of said plate to completely polymerize until its final hardness, and
- gluing said plate to said surface portion of said body by means of a polyurethane-based glue, so that said molded and grooved surface portion of the plate and said surface portion of said body are placed one against the other on the other and that said glue is placed between them in a substantially uniform layer.

D'autres caractéristiques et avantages de la présente invention apparaîtront au cours de la description suivante donnée en regard des dessins annexés à titre illustratif, mais nullement limitatif, dans lesquels:
l.a figure unique représente, sous forme schématique, un diagramme de la mise en oeuvre du procédé selon l'invention.Other characteristics and advantages of the present invention will appear during the following description given with reference to the drawings annexed by way of illustration, but in no way limiting, in which:
the single figure represents, in schematic form, a diagram of the implementation of the method according to the invention.

Le procédé, selon l'invention, de réalisation d'une protection d'au moins une portion de la surface d'un corps métallique consiste, en première étape A, à mélanger 3 du polyuréthane liquide 1 avec un agent polymérisant 2 pour réaliser une pâte relativement visqueuse. Le type de polyuréthane utilisé est par exemple celui qui est vendu par la Société B.A.S.F. sous la référence commerciale " ELASTI JRANE" .  The method according to the invention for producing protection for at least a portion of the surface of a metal body consists, in the first step A, of mixing 3 of the liquid polyurethane 1 with a polymerizing agent 2 to produce a relatively viscous paste. The type of polyurethane used is, for example, that which is sold by the company B.A.S.F. under the commercial reference "ELASTI JRANE".

quand le mélange 3 est obtenu, en deuxième étape B, la pâte visqueuse est moulée sur un support pour lui donneur, sur une partie 4 de sa surface 5, une forme sensiblement complémentaire de la portion de surface 6 du corps 7 à protéger. Le mélange 3 est par exemple coulé sur une plaque en acier inoxydable 8, ou analogue, ayant une forme conforme, ou sensiblement conforme, à la potion de surface 6 du corps 7 à protéger. On laisse le mélange pâteux se polymériser partiellement pendant un certain temps déterminé pour que la pâte se présente sous la forme d'une plaque 10 ayant une rigidité suffisante pour pouvoir être enlevée du support et transportée. when the mixture 3 is obtained, in second step B, the viscous paste is molded on a support for the donor, on a part 4 of its surface 5, a shape substantially complementary to the surface portion 6 of the body 7 to be protected. The mixture 3 is for example poured onto a stainless steel plate 8, or the like, having a shape that conforms, or substantially conforms, to the surface potion 6 of the body 7 to be protected. The pasty mixture is allowed to partially polymerize for a certain determined time so that the dough is in the form of a plate 10 having sufficient rigidity to be able to be removed from the support and transported.

En troisième étape C du procédé, des rainures 9 sont réalisées sur toute la partie de surface moulée 4 de la plaque, par exemple en faisant passer la plaque 1(), qui n'a pas encore sa dureté maximale, sur un rouleau presseur comportant des nervures en relief qui vont donc s'imprimer dans la partie de surface moulée 4 de la plaque. In the third step C of the method, grooves 9 are made over the entire molded surface part 4 of the plate, for example by passing the plate 1 (), which has not yet reached its maximum hardness, on a pressure roller comprising ribs in relief which will therefore be printed in the molded surface part 4 of the plate.

Après que ces rainures aient été réalisées, la plaque l() est stockée jusqu'à ce que la pâte soit complètement polymérisée et ait atteint sa dureté défillitivc maximale.  After these grooves have been made, the plate 1 () is stored until the dough is completely polymerized and has reached its maximum defillitivity hardness.

En quatrième étape D, la plaque 10 est collée sur la portion de surface 6 du corps 7 à protéger, au moyen d'une colle à base de polyuréthane. Cette colle est par exemple celle qui est commercialisée par la Société HENKEL sous la référence U.R.  In the fourth step D, the plate 10 is bonded to the surface portion 6 of the body 7 to be protected, using a polyurethane-based adhesive. This adhesive is for example that which is marketed by the company HENKEL under the reference U.R.

Le collage s'effectue de façon que la plaque 10 soit posée sur le corps 7, la portion de surface G du corps 7 à protéger et la partie de surface 4 moulée et rainurée de la paque se faisant face et la colle étant posée entre elles en une couche 11 sensiblement uniforme de façon à les mouiller uniformément. The bonding is carried out so that the plate 10 is placed on the body 7, the surface portion G of the body 7 to be protected and the molded and grooved surface portion 4 of the pack facing each other and the adhesive being placed between them in a substantially uniform layer 11 so as to wet them uniformly.

Afin d'obtenir un collage parfait, il est avantageux que, préalablement au collage, il soit effectué un nettoyage de la portion de surface 6 du corps métallique 7. Ce nettoyage consiste en un lavage de la surface avec un acide comme dc l'acide nitrique ou chlorydrique, suivi d'un lavage avec un liquide neutre comme de l'eau. In order to obtain a perfect bonding, it is advantageous that, before bonding, a cleaning of the surface portion 6 of the metallic body 7 is carried out. This cleaning consists of washing the surface with an acid such as acid. nitric or hydrochloric, followed by washing with a neutral liquid such as water.

Pour favoriser le collage, une pression sensiblement uniforme 12 est appliquée entre le corps 7 et la plaque 10 jusqu'au collage définitif entre eux. To promote bonding, a substantially uniform pressure 12 is applied between the body 7 and the plate 10 until the final bonding between them.

Dans une mise en oeuvre préférentielle du procédé, notamment pour des grandes surfaces à protéger, la pression uniforme 12 est donnée par la pression atmosphérique elle-même. Pour ce faire, une enveloppe souple 13 est placée en enveloppant le corps 7 et la plaque 10, et un vide au moins partiel est réalisé entre l'enveloppe et la plaque, ce vide étant facilement obtenu par aspiration au mo-en en d'une pompe à vide dont le tuyau d'aspiration 14 est placé entre l'enveloppe 13 et la plaque 10.In a preferred implementation of the method, in particular for large areas to be protected, the uniform pressure 12 is given by atmospheric pressure itself. To do this, a flexible envelope 13 is placed by enveloping the body 7 and the plate 10, and an at least partial vacuum is created between the envelope and the plate, this vacuum being easily obtained by suction at the bottom. a vacuum pump, the suction pipe 14 of which is placed between the casing 13 and the plate 10.

I.e Demandeur a en outre constaté que le collage était parfait lorsque l'aire de la partie de surface rainurée 4 de la plaque 10, rainures comprises, était égale à environ une fois et demie l'aire de la portion de surface 6 du corps 7 à protéger. Ie Applicant has further found that the bonding was perfect when the area of the grooved surface portion 4 of the plate 10, including grooves, was equal to about one and a half times the area of the surface portion 6 of the body 7 to protect.

Il est bien évident que le corps peut être entièrement protégé par la pose et le collage de plusieurs plaques comme décrit ci-dessus, les différentes plaques étant collées les unes à côté des autres en se recouvrant, par exemple, au moyen de leurs bords coupés en biseau.  It is obvious that the body can be entirely protected by the laying and gluing of several plates as described above, the different plates being glued next to each other by overlapping, for example, by means of their cut edges. beveled.

Claims (8)

REVENDICATIONS 1. I'rocédé de réalisation d'une protection d'au moins une portion de la surface d'un corps métallique, caractérisé par le fait qu'il consiste: 1. the process for providing protection for at least a portion of the surface of a metal body, characterized in that it consists: - à mélanger (3) du polyuréthane liquide (1) avec un agent polyménsant (2) pour réaliser une pâte relativement visqueuse, - mixing (3) liquid polyurethane (1) with a polymerizing agent (2) to produce a relatively viscous paste, - à mouler ladite pâte pour lui donner, sur une partie (4) de sa surface (5), une forme sensiblement complémentaire de la portion (6) de surface du corps (7) à protéger, - molding said paste to give it, on a part (4) of its surface (5), a shape substantially complementary to the portion (6) of the surface of the body (7) to be protected, - à laisser polymériser partiellement ladite pâte jusqu'à ce qu'elle se présente sous la forme d'une plaque (10) relativement rigide, - allowing the said paste to partially polymerize until it is in the form of a relatively rigid plate (10), - à réaliser des rainures (9) sur ladite partie de surface moulée (4) de ladite plaque (10), - producing grooves (9) on said molded surface part (4) of said plate (10), - à laisser polymériser complètement ladite pâte de ladite plaque jusqu'à sa dureté définitive, et to allow the said paste from the said plate to completely polymerize until its final hardness, and - à coller ladite plaque (10) sur ledit corps (7) au moyen d'une colle à base de polyuréthane, de façon que la partie de surface (4) moulée et rainurée de la plaque (10) et la portion de surface (6) du corps à protéger soient disposées l'une face à l'autre et que ladite colle soit posée entre elles en une couche (I l ) sensiblement uniforme. - gluing said plate (10) on said body (7) using a polyurethane-based adhesive, so that the molded and grooved surface part (4) of the plate (10) and the surface portion ( 6) of the body to be protected are arranged one facing the other and that said adhesive is placed between them in a substantially uniform layer (I l). 2. Procédé selon la revendication 1, caractérisé par le fait qu'il consiste à exercer une pression (lu) sensiblement uniforme entre ledit corps (7) et ladite plaque (10) jusqu'au collage définitif entre eux. 2. Method according to claim 1, characterized in that it consists in exerting a pressure (lu) substantially uniform between said body (7) and said plate (10) until the final bonding between them. 3. Procédé selon la revendication 2, caractérisé par le fait que ladite pression uniforme est donnée par la pression atmosphérique. 3. Method according to claim 2, characterized in that said uniform pressure is given by atmospheric pressure. 4. Procédé selon la revendication 3, caractérisé par le fait que ladite pression uniforme est obtenue en plaçant une enveloppe souple (13) autour dudit corps (7) et de ladite plaque (10) et en réalisant au moins un vide partiel entre ladite enveloppe et ladite plaque. 4. Method according to claim 3, characterized in that said uniform pressure is obtained by placing a flexible envelope (13) around said body (7) and said plate (10) and by achieving at least a partial vacuum between said envelope and said plate. 5. Procédé selon l'une des revendications 1 à 4, caractérisé par le fait qu'il consiste, préalablement au collage, à effectuer un nettoyage de la portion de surface (6) dudit corps métallique à protéger. 5. Method according to one of claims 1 to 4, characterized in that it consists, prior to bonding, in performing a cleaning of the surface portion (6) of said metal body to be protected. 6. Procédé selon la revendication 5, caractérisé par le fait que ledit nettoyage consiste en un lavage de la portion de surface (6) du corps (7) avec un acide, suivi d'un lavage avec un liquide neutre. 6. Method according to claim 5, characterized in that said cleaning consists of washing the surface portion (6) of the body (7) with an acid, followed by washing with a neutral liquid. 7. Procédé selon la revendication 6, caractérisé par le fait que ledit liquide neutre est de l'eau.  7. Method according to claim 6, characterized in that said neutral liquid is water. 8. L'procédé selon l'une des revendications I à 7, caractérisé par le fait que l'aire de ladite partie de surface (6) de ladite plaque (l0) comportant lesdites rainures (9), y compris l'aire desdites rainures, est égale à environ une fois et demie l'aire de ladite portion de surface (6) dudit corps à protéger.  8. The method according to one of claims I to 7, characterized in that the area of said surface part (6) of said plate (10) having said grooves (9), including the area of said grooves, is equal to approximately one and a half times the area of said surface portion (6) of said body to be protected.
FR9211760A 1992-10-05 1992-10-05 Protection of metal body surface - is achieved by moulding polyurethane plaque, grooving one surface and bonding this to acid cleaned metal surface under pressure with polyurethane base adhesive Pending FR2696415A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9211760A FR2696415A1 (en) 1992-10-05 1992-10-05 Protection of metal body surface - is achieved by moulding polyurethane plaque, grooving one surface and bonding this to acid cleaned metal surface under pressure with polyurethane base adhesive

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9211760A FR2696415A1 (en) 1992-10-05 1992-10-05 Protection of metal body surface - is achieved by moulding polyurethane plaque, grooving one surface and bonding this to acid cleaned metal surface under pressure with polyurethane base adhesive

Publications (1)

Publication Number Publication Date
FR2696415A1 true FR2696415A1 (en) 1994-04-08

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FR9211760A Pending FR2696415A1 (en) 1992-10-05 1992-10-05 Protection of metal body surface - is achieved by moulding polyurethane plaque, grooving one surface and bonding this to acid cleaned metal surface under pressure with polyurethane base adhesive

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FR (1) FR2696415A1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1534767A (en) * 1975-03-27 1978-12-06 Nitto Electric Ind Co Heat-curable composite sheet
US4421827A (en) * 1982-01-18 1983-12-20 Scott Bader Company Limited Composites and methods for providing metal clad articles and articles produced

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1534767A (en) * 1975-03-27 1978-12-06 Nitto Electric Ind Co Heat-curable composite sheet
US4421827A (en) * 1982-01-18 1983-12-20 Scott Bader Company Limited Composites and methods for providing metal clad articles and articles produced

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