EP0607717B1 - Procédé de protection d'un outillage de galvanoplastie et outillage protégé selon ce procédé - Google Patents

Procédé de protection d'un outillage de galvanoplastie et outillage protégé selon ce procédé Download PDF

Info

Publication number: EP0607717B1
Authority: EP; European Patent Office
Prior art keywords: plastisol; tool; outillage; une; minutes
Prior art date: 1992-12-17
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

EP93403010A

Other languages

German (de)

English (en)

French (fr)

Other versions

EP0607717A2 (fr

EP0607717A3 (en

Inventor

Gilles Renaud

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.)

DICOPLAST

Original Assignee

DICOPLAST

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.)

1992-12-17

Filing date

1993-12-13

Publication date

1997-07-16

1993-12-13 Application filed by DICOPLAST filed Critical DICOPLAST

1994-07-27 Publication of EP0607717A2 publication Critical patent/EP0607717A2/fr

1994-09-21 Publication of EP0607717A3 publication Critical patent/EP0607717A3/fr

1997-07-16 Application granted granted Critical

1997-07-16 Publication of EP0607717B1 publication Critical patent/EP0607717B1/fr

2013-12-13 Anticipated expiration legal-status Critical

Status Expired - Lifetime 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
- 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
- B05D7/50—Multilayers
- B05D7/52—Two layers
- B05D7/54—No clear coat specified
- B05D7/546—No clear coat specified each layer being cured, at least partially, separately
- 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 invention relates to a method for protecting an electroplating tool and a product obtained by this method.
the method of the invention consists more particularly in the application of a coating comprising at least two layers of different plastics on an electroplating tool.
the plastics used belong to the family of plastisols.
Plastisols are mixtures of a suspension of powdered vinyl resin prepared according to the emulsion polymerization (or microsuspension) process in a liquid plasticizer, and adjuvants, such as stabilizers, fillers, pigments, swelling agents and others adjuvants. Under the action of heat, the plastisols are transformed into homogeneous solids.
the vinyl resins used to obtain plastisols are mainly polyvinyl acetate, polyvinyl ether, polyvinyl alcohol and poly (vinyl chloride) (PVC).
PVC poly (vinyl chloride)
the electroplating tool includes all kinds of electrolysis fixtures, intended to hold the parts which one wishes to chrome, nickel or coat with any metal, or which one wishes, on the contrary to demetallize.
the pieces are immersed in chemically corrosive baths such as sulfochromatic, hydrochloric, nickel plating, chemical copper plating, chromium plating, gilding, silver plating, demetallization or the like.
French patent FR-2,456,131 describes a plastisol used for the coating of electrolysis fixtures. Previously, this plastisol made it possible to obtain sufficiently satisfactory coatings insofar as these had both sufficient mechanical or physical resistance to impact and sufficient protection against corrosion, for the usual conditions of galvanization.
US patent US-3,514,312 describes a method of coating a metal surface for the manufacture of a roll.
the technique described in this document is not intended for the protection of an electroplating tool and it is envisaged that several layers of plastisol are applied.
This document does not propose any particular provision such as the relative hardness of the plastisol in order to improve the resistance of electroplating tools.
the plastisols used until now contain as plasticizers dibutyl phthalates, benzylbutyl mixed phthalates, diethyl phthalates, dihexyl phthalates and diisononyl phthalates, which represents 60 to 70% by weight of plasticizer mixture relative to poly (vinyl chloride).
the plastisol described in patent FR-2,456,131 cited above has 35% by weight of plasticizer mixture (70 to 80% of octyl phthalate and 30 to 20% of octyl adipate) which makes it more resistant absorption of the solvent, but will not be sufficient for new drying products.
the object of the invention is to improve the plastisol coating of an electroplating tool in order to overcome the drawbacks noted.
the particular conditions of the steaming of the tool after the application of the first layer of plastisol are intended to ensure an optimal bond between the first layer, or layer inner layer of plastisol and the second or outer layer of plastisol.
This intimate bond or fusion is important, because it allows the plasticizers contained in the interior layer of plastisol, to migrate, during the drying of a piece of tool after galvanic treatment and during the use of the tool, towards the outer layer of plastisol.
Refueling the outer layer of plasticizers from the inner layer of plastisol makes it possible to avoid porosity and a loss of elasticity of the coating, due to the loss of plasticizers occurring when using known plastisol coatings.
the process of the invention is not limited to an application of two layers of plastisol. On the contrary, it is also possible to apply more than one inner layer of plastisol. The main thing is that the inner layers, whether made of one or more different plastisols, each have a hardness, after polymerization, lower than that of the outer layer of plastisol.
the process of the invention makes it possible, by the suppleness or flexibility of the interior layers, to provide very good protection of the tools - and in particular of the springs or current leads - against mechanical constraints of use in electroplating, and, at the same time, by the hardness of the outer layer, a very good resistance of the tool against the increased chemical aggressiveness of the galvanizing baths currently used.
the improvement in chemical resistance is more particularly important for tool springs, since the porosity of their coatings observed in the prior art favored a deposition of metal on the coatings.
the plastisols chosen for a particular embodiment of a coating according to the invention may contain different kinds of vinyl resin. But alternatively, the plastisols of the different layers can be prepared from the same vinyl resin. Preferably, poly (vinyl chloride) (PVC) will be used.
PVC poly (vinyl chloride)
the gelation started does not stop at the moment when the tools have left the oven. This entails the risk of a lower quality adhesion or fusion of this layer with the next layer and, by this, a reduction in the migration capacity of plasticizers from the lower layer (s) to the outer layer of plastisol.
the invention also relates to an electroplating tool protected by a first layer of a first plastisol and which is coated with at least a second layer of a second plastisol, the second plastisol being of a hardness, after polymerization, greater than that of the first plastisol.
Figure 1 shows, in a very schematic section, a tool obtained by means of the method according to Example I.
Tool 1 is a basket in which are placed objects which must be coated with a metal.
the tool can also be an electrolysis assembly to which are attached, during their galvanization, various parts, or any other suitable support.
the basket 1 is covered on its entire surface, that is to say both on the internal surface and on the external surface, with an adhesion underlayer 2 which, itself, is covered with a first layer 3 of a first plastisol. On layer 3 of the first plastisol is deposited a second layer 4 of a second plastisol.
the first layer of plastisol and the second layer of plastisol differ from each other, on the one hand, by their hardness after polymerization and, advantageously on the other hand, by their color.
the particular color of each plastisol is obtained by an additive which does not cause a chemical reaction with the other components of the mixture.
Figure 2 shows, in a representation also very schematically, an installation constituting a device for the implementation of the method of the invention according to Example II.
Figure 2 shows, in a representation also very schematically, an installation constituting a device for the implementation of the method of the invention according to Example II.
the aspect of an optimal arrangement of the various elements of the device has been deliberately omitted.
the device for implementing the method of the invention comprises a first work station 5 intended for the preparation of the tool 1 according to the rules of the trade known per se.
the work station 5 comprises means 6 necessary to be able to carry out a sanding of the tool 1, and a rinsing tank 7 in which the tool 1 is immersed after sanding.
the first work station 5 can comprise either instead of, or in addition to the sanding means 6, a tank (not shown) intended for chemical degreasing by means of trichlor vapor or of a solvent.
the device for implementing the method according to the invention also comprises a second work station 8 intended for the application of the adhesion undercoat.
the second work station 8 is represented diagrammatically by a tank containing an appropriate primer.
the application of the primer to tool 1 can, however, also be done with a brush, or with a spray gun.
the device for implementing the method according to the invention also comprises a third work station 9, a fourth work station 10 and a fifth work station 11.
the third, fourth and fifth work stations are intended for application of the first layer 3 of plastisol, of the second layer 4 of plastisol and of the third layer of plastisol (not shown in FIG. 1).
Each of the work stations 9, 10 and 11 is represented by a tank containing the corresponding plastisol.
the tank of the third work station 9 can be replaced by electrostatic spraying means in order to be able to apply the first layer of plastisol to the spray gun.
the device for implementing the method according to the invention furthermore comprises a sixth work station constituted by an oven 12 in which the tool 1 is heated according to the different stages of the method.
a means of transport and holding represented by a rail 13 on which a carriage 14 can be moved, is provided.

Landscapes

Life Sciences & Earth Sciences (AREA)
Engineering & Computer Science (AREA)
Wood Science & Technology (AREA)
Application Of Or Painting With Fluid Materials (AREA)
Paints Or Removers (AREA)
Laminated Bodies (AREA)

EP93403010A 1992-12-17 1993-12-13 Procédé de protection d'un outillage de galvanoplastie et outillage protégé selon ce procédé Expired - Lifetime EP0607717B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
FR9215264A FR2699557B1 (fr)	1992-12-17	1992-12-17	Procédé de protection d'un outillage de galvanoplastie et produit obtenu.
FR9215264		1992-12-17

Publications (3)

Publication Number	Publication Date
EP0607717A2 EP0607717A2 (fr)	1994-07-27
EP0607717A3 EP0607717A3 (en)	1994-09-21
EP0607717B1 true EP0607717B1 (fr)	1997-07-16

Family

ID=9436742

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP93403010A Expired - Lifetime EP0607717B1 (fr)	1992-12-17	1993-12-13	Procédé de protection d'un outillage de galvanoplastie et outillage protégé selon ce procédé

Country Status (4)

Country	Link
EP (1)	EP0607717B1 (es)
DE (2)	DE607717T1 (es)
ES (1)	ES2060560T3 (es)
FR (1)	FR2699557B1 (es)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2857367B1 (fr)	2003-07-11	2005-10-07	Dicoplast	Nouveau plastisol destine a revetir des outillages de galvanoplastie, enrichi d'un inhibiteur de catalyse
FR2927909B1 (fr) *	2008-02-26	2010-03-26	Serme	Cache souple pour support galvanique, support et procede de mise en oeuvre
US9506150B2 (en)	2014-10-13	2016-11-29	Rohm And Haas Electronic Materials Llc	Metallization inhibitors for plastisol coated plating tools
US20180136056A1 (en) *	2015-07-15	2018-05-17	Shenzhen New Degree Technology Co., Ltd.	Composite material and force sensing film made thereof
FR3074808B1 (fr)	2017-12-13	2020-05-29	Maxence RENAUD	Outillage de galvanoplastie

Citations (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2456131A1 (fr) *	1979-05-10	1980-12-05	Serme	Nouveau plastisol a base de polychlorure de vinyle et d'un melange plastifiant et application a la protection de supports pour montages d'electrolyse

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3514312A (en) *	1967-07-12	1970-05-26	Barrier Corp The	Process for coating a metal surface

1992
- 1992-12-17 FR FR9215264A patent/FR2699557B1/fr not_active Expired - Fee Related
1993
- 1993-12-13 EP EP93403010A patent/EP0607717B1/fr not_active Expired - Lifetime
- 1993-12-13 DE DE1993403010 patent/DE607717T1/de active Pending
- 1993-12-13 ES ES93403010T patent/ES2060560T3/es not_active Expired - Lifetime
- 1993-12-13 DE DE1993612252 patent/DE69312252T2/de not_active Expired - Lifetime

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2456131A1 (fr) *	1979-05-10	1980-12-05	Serme	Nouveau plastisol a base de polychlorure de vinyle et d'un melange plastifiant et application a la protection de supports pour montages d'electrolyse

Also Published As

Publication number	Publication date
ES2060560T3 (es)	1997-12-01
EP0607717A2 (fr)	1994-07-27
DE69312252D1 (de)	1997-08-21
ES2060560T1 (es)	1994-12-01
FR2699557A1 (fr)	1994-06-24
DE607717T1 (de)	1995-06-14
DE69312252T2 (de)	1998-03-19
EP0607717A3 (en)	1994-09-21
FR2699557B1 (fr)	1995-03-10

Legal Events

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1994-06-10	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
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1994-11-03	ITCL	It: translation for ep claims filed	Representative=s name: STUDIO TORTA SOCIETA' SEMPLICE
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Publication	Publication Date	Title
EP0607717B1 (fr)	1997-07-16	Procédé de protection d'un outillage de galvanoplastie et outillage protégé selon ce procédé
WO2006000685A1 (fr)	2006-01-05	Revetement anti-adhesif presentant une resistance amelioree a la rayure et article culinaire ainsi revetu
EP2211671A2 (fr)	2010-08-04	Article culinaire comprenant un revetement antiadhesif resistant a la corrosion et a la rayure
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FR2692284A1 (fr)	1993-12-17	Tôle revêtue et procédé de fabrication de cette tôle.
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EP3724376B1 (fr)	2021-09-08	Outillage de galvanoplastie
EP3790701A1 (en)	2021-03-17	A method of diffusion bonding
EP1496090B1 (fr)	2011-12-14	Utilisation d'un plastisol destiné à revêtir des outillages de galvanoplastie
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FR2487224A1 (fr)	1982-01-29	Procede pour produire un objet en acier alumine plastifie et objet ainsi obtenu, notamment poele a frire antiadhesive
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FR2735075A1 (fr)	1996-12-13	Procede pour conferer un aspect metallique patine a une piece en matiere plastique.
US3022193A (en)	1962-02-20	Method of coating aluminum
FR2575767A1 (fr)	1986-07-11	Procede de depot d'un revetement protecteur sur des pieces metalliques a base de titane ou d'un alliage de titane