EP0345607B1 - Corrosion protection element for parts, particularly automotive parts, to be connected by screws, bolts, etc. - Google Patents

Corrosion protection element for parts, particularly automotive parts, to be connected by screws, bolts, etc. Download PDF

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Publication number
EP0345607B1
EP0345607B1 EP89109739A EP89109739A EP0345607B1 EP 0345607 B1 EP0345607 B1 EP 0345607B1 EP 89109739 A EP89109739 A EP 89109739A EP 89109739 A EP89109739 A EP 89109739A EP 0345607 B1 EP0345607 B1 EP 0345607B1
Authority
EP
European Patent Office
Prior art keywords
protection element
corrosion protection
element according
laminate
layer
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
EP89109739A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0345607A1 (en
Inventor
Ralf A. Scharpenack
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.)
3M Co
Original Assignee
Minnesota Mining and Manufacturing Co
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 Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Publication of EP0345607A1 publication Critical patent/EP0345607A1/en
Application granted granted Critical
Publication of EP0345607B1 publication Critical patent/EP0345607B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
    • C23F13/02—Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions

Definitions

  • the invention relates to a corrosion protection element for parts, particularly automotive parts, to be connected by screws, bolts and the like and consisting at least in part of metal, said corrosion protective element being adapted to be provided between said parts at the juncture thereof and including zinc in layer form.
  • a self-adhesive zinc foil as an element affording protection from corrosion, such foil being provided at the juncture of rubber components and steel components or between other metal attachments, for example; see Japanese Patent JP-A-61-179,886.
  • a zinc foil of this kind does not provide for a seal at the juncture of the parts to be connected and is damaged rather easily by mechanical movements of the parts between which it is located.
  • a satisfactory protection of connected parts from corrosion will be obtained by the application of several layers of paint; this again does not result in a seal between the parts to be connected.
  • the coats of paint will be damaged by mechanical movements of the parts connected.
  • Optimum protection from corrosion is obtainable where the parts to be connected are high-grade steel, such as chrome-nickel steel.
  • a suitable seal at the juncture between the parts to be connected may be obtained by any sealing compound or sealing tape which will accommodate slight mechnical movements. This kind of protection from corrosion is very expensive, however.
  • this object is achieved by a laminate comprising two high-purity zinc foils providing cathodic anticorrosive action, said foils being disposed in a mutually overlying relationship and having therebetween a layer of an elastic sealing material, said laminate conforming in an optimum manner to and sealing the gap between the parts to be connected as these parts are being connected with each other.
  • the zinc foils be adhered to the layer of sealing material by means of adhesive layers.
  • the laminate may have any desired geometric shape in plan view. It is preferred that the laminate be manufactured in a continuous or strand form.
  • the elastomer may be a paste composition on the basis of polyisobutylene, (butyl) or polyurethane, for instance, or may be present in the form of a closed-cell foam adhesive tape.
  • the closed-cell form adhesive tape may be acrylic foam or a neoprene or polyether tape, for example.
  • the laminate accept automotive body paints.
  • the inventive corrosion protection element In a one-year long-term test of a test vehicle under corrosion promoting conditions corresponding to a vehicle life of about ten years in a normal environment, the inventive corrosion protection element was found not to be damaged or wear, and no corrosion was found in the areas where attachments were connected. As a result, the inventive corrosion protection element provides excellent protection from corrosion as well as an excellent seal particularly between screwed-on attachments and the substrate, such as fenders and the automobile body to which they are attached.
  • the permanently elastic adhesive layer of the laminate provides for easy application of the inventive corrosion protection element in the vicinity of the bores provided in the attachments. As the screws are tightened, the laminate will in an optimum manner conform to and seal the gap between the parts to be joined, permanently sealing that gap.
  • the zinc provides for cathodic anticorrosive action in the gap and on the bore walls.
  • the entire laminate is permanently elastic, it exhibits long life and stability against aging despite relative movements between the joined parts. Because of its advantages in the assembly process and the permanent anticorrosive effect, the inventive corrosion protection element is most cost-effective.
  • the adhesive-protecting liner protects the permanently elastic self-adhesive layer from soiling before the laminate is put to use.
  • the inventive corrosion protection element has major advantages particularly in the automotive, naval, and aircraft industries and for stationary installations which require permanent stability in a humid environment.
  • the corrosion protection element comprises a laminate 1 which may be manufactured in a strand and has two spaced high-purity zinc foils 2 having therebetween a layer 3 of an elastic adhesive sealing material engaging the facing sides of foils 2.
  • a layer 4 of a permanently elastic adhesive is provided on the opposite side of lower zinc foil 2 (Fig. 1). In the storage condition of the corrosion protection element, that layer 4 is covered by an adhesive-protecting liner 5 which may be stripped away readily before use.
  • Fig. 2 shows the use of the corrosion protection element for fastening a fender 6 to the wheel case of a vehicle body 7.
  • adhesive-protecting line 5 is stripped from laminate 1, and the latter is applied with the self-adhesive surface of layer 4 of permanently elastic adhesive down on vehicle body 7 above bores 9 (in Fig. 2).
  • fender 6 is fitted to the wheel case in vehicle body 7 and to the corrosion protection element placed thereon, and threaded bolts 10 are introduced in bores 9 and tightened to secure the fender to the wheelcase.
  • laminate 1 of the corrosion protection element conforms in an optimum manner to and permanently seals the juncture 11 between fender 6 and wheel case 7.
  • High-purity zinc foils 2 of laminate 1 provide cathodic anticorrosive action in area 11 and in bores 9. Because of the permanent elasticity of the corrosion protection element, that element itself and the connection between the joined vehicle parts show a long life and a high stability against aging despite relative movements of fender 6 and the wheel case of vehicle body 7 during vehicle operation.
  • the self-adhesive coating of laminate 1 and the deformability of layer 3 of an elastic adhesive sealing material provide for easy assembly of the corrosion protection element and for easy installation of fender 6 on wheel case 7 of the vehicle body.
  • Fig 3 shows another example of the use of the element on a roofed bicycle stand, which comprises supporting structure of steel beams 13 which is maintained in the assembled condition by means of threaded bolt-and-nut fastener combinations 14 provided adjacent sheet-metal roof sections 15.
  • the laminate 1 is provided above and below fastener combinations 14 to seal joint 16.
  • corrosion will be caused by the slight but unavoidable relative movements of the connected parts that are caused by wind and other mechanical forces acting on the stand.
  • a multi-layer construction consisting of the following materials including dimensional data:

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Laminated Bodies (AREA)
  • Prevention Of Electric Corrosion (AREA)
  • Gasket Seals (AREA)
  • Connection Of Plates (AREA)
  • Body Structure For Vehicles (AREA)
  • Bolts, Nuts, And Washers (AREA)
EP89109739A 1988-06-08 1989-05-30 Corrosion protection element for parts, particularly automotive parts, to be connected by screws, bolts, etc. Expired - Lifetime EP0345607B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3819495 1988-06-08
DE3819495A DE3819495C1 (enrdf_load_stackoverflow) 1988-06-08 1988-06-08

Publications (2)

Publication Number Publication Date
EP0345607A1 EP0345607A1 (en) 1989-12-13
EP0345607B1 true EP0345607B1 (en) 1992-09-09

Family

ID=6356123

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89109739A Expired - Lifetime EP0345607B1 (en) 1988-06-08 1989-05-30 Corrosion protection element for parts, particularly automotive parts, to be connected by screws, bolts, etc.

Country Status (5)

Country Link
EP (1) EP0345607B1 (enrdf_load_stackoverflow)
JP (1) JPH0277371A (enrdf_load_stackoverflow)
KR (1) KR910001267A (enrdf_load_stackoverflow)
CA (1) CA1339407C (enrdf_load_stackoverflow)
DE (1) DE3819495C1 (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8944351B2 (en) 2011-05-06 2015-02-03 Saint-Gobain Abrasives, Inc. Paint cup assembly with an outlet valve
US9162240B2 (en) 2004-12-16 2015-10-20 Saint-Gobain Abrasives, Inc./Saint-Gobain Abrasie Liquid container system for a spray gun
US9586220B2 (en) 2011-06-30 2017-03-07 Saint-Gobain Abrasives, Inc. Paint cup assembly
US10035156B2 (en) 2006-06-20 2018-07-31 Saint-Gobain Abrasives, Inc. Liquid supply assembly
US11040360B2 (en) 2006-06-20 2021-06-22 Saint-Gobain Abrasives, Inc. Liquid supply assembly

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH068162U (ja) * 1992-07-08 1994-02-01 三菱自動車工業株式会社 パネルのシール構造
DE4328716B4 (de) * 1992-09-04 2005-09-22 Volkswagen Ag Kraftfahrzeug
DE4305683A1 (de) * 1993-02-24 1994-08-25 Daetwyler Ag Vorhangplatte für Gebäude
DE29801049U1 (de) * 1998-01-22 1998-04-30 Emhart Inc., Newark, Del. Karosseriebauteil mit einer Zinn-Zink-Beschichtung
US8124182B2 (en) * 2007-06-15 2012-02-28 The Boeing Company Application of insulating coating
US10882064B2 (en) 2011-12-30 2021-01-05 Saint-Gobain Abrasives, Inc./Saint-Gobain Abrasifs Convertible paint cup assembly with air inlet valve
DE202014003326U1 (de) * 2014-04-17 2015-08-07 Georg Martin Gmbh Treppenförmige Zwischenlage (Toleranzausgleich-Schichtfolie)
DE102014108183B4 (de) 2014-06-11 2024-02-01 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Mehrschichtige Karosseriestruktur einer Kraftfahrzeugkarosserie und Verfahren zur Herstellung der mehrschichtigen Karosseriestruktur
DE102021120191A1 (de) 2021-08-03 2023-02-09 Denso-Holding Gmbh & Co. Korrosionsschutzband umfassend mindestens vier Lagen

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3813315A (en) * 1968-12-18 1974-05-28 Valyi Emery I Method of laminating plastic to metal
AR201314A1 (es) * 1973-04-19 1975-02-28 Bagnulo L Anodo de sacrificio para la proteccion catodica de cualquier tipo de superficie metalica
FR2247547A1 (en) * 1973-10-12 1975-05-09 Peugeot Protection against corrosion using a sacrificial metal - esp for assemblies on the underframe of motor cars
DE2807484A1 (de) * 1978-02-22 1979-08-23 Volkswagenwerk Ag Kathodische korrosionsschutzschicht fuer anlageflaechen miteinander verbundener teile, insbesondere karosseriebleche
JPS61179886A (ja) * 1985-02-05 1986-08-12 Daihatsu Motor Co Ltd 防食方法

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9162240B2 (en) 2004-12-16 2015-10-20 Saint-Gobain Abrasives, Inc./Saint-Gobain Abrasie Liquid container system for a spray gun
US10035156B2 (en) 2006-06-20 2018-07-31 Saint-Gobain Abrasives, Inc. Liquid supply assembly
US11040360B2 (en) 2006-06-20 2021-06-22 Saint-Gobain Abrasives, Inc. Liquid supply assembly
US11548018B1 (en) 2006-06-20 2023-01-10 Saint-Gobain Abrasives, Inc. Liquid supply assembly
US11679399B2 (en) 2006-06-20 2023-06-20 Saint-Gobain Abrasives, Inc. Liquid supply assembly
US12064783B2 (en) 2006-06-20 2024-08-20 Saint-Gobain Abrasives, Inc. Liquid supply assembly
US8944351B2 (en) 2011-05-06 2015-02-03 Saint-Gobain Abrasives, Inc. Paint cup assembly with an outlet valve
US8998018B2 (en) 2011-05-06 2015-04-07 Saint-Gobain Abrasives, Inc. Paint cup assembly with an extended ring
US9335198B2 (en) 2011-05-06 2016-05-10 Saint-Gobain Abrasives, Inc. Method of using a paint cup assembly
US9586220B2 (en) 2011-06-30 2017-03-07 Saint-Gobain Abrasives, Inc. Paint cup assembly

Also Published As

Publication number Publication date
EP0345607A1 (en) 1989-12-13
JPH0277371A (ja) 1990-03-16
KR910001267A (ko) 1991-01-30
DE3819495C1 (enrdf_load_stackoverflow) 1989-11-23
CA1339407C (en) 1997-09-02

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