EP0428887A1 - Verfahren zur Herstellung eines geleimten Skis Verfahren zur Herstellung eines geleimten Skis - Google Patents

Verfahren zur Herstellung eines geleimten Skis Verfahren zur Herstellung eines geleimten Skis Download PDF

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Publication number
EP0428887A1
EP0428887A1 EP90120350A EP90120350A EP0428887A1 EP 0428887 A1 EP0428887 A1 EP 0428887A1 EP 90120350 A EP90120350 A EP 90120350A EP 90120350 A EP90120350 A EP 90120350A EP 0428887 A1 EP0428887 A1 EP 0428887A1
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EP
European Patent Office
Prior art keywords
film
adhesive
polymer
copolymer
grafted
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.)
Granted
Application number
EP90120350A
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English (en)
French (fr)
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EP0428887B1 (de
Inventor
Jean-Pierre Nurit
Gilles Recher
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.)
Salomon SAS
Original Assignee
Salomon SAS
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Filing date
Publication date
Application filed by Salomon SAS filed Critical Salomon SAS
Publication of EP0428887A1 publication Critical patent/EP0428887A1/de
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Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C5/00—Skis or snowboards
    • A63C5/12—Making thereof; Selection of particular materials

Definitions

  • the present invention relates to the manufacture of skis used in winter sports, and intended to slide on snow and ice.
  • the structure generally comprises peripheral protective elements, forming the upper face and the lateral faces of the ski, internal resistance elements or resistance blades, made of a material having high resistance and great stiffness.
  • the structure also includes filling elements such as a honeycomb core, and a sliding sole forming the underside of the ski and ensuring good sliding on the snow.
  • the manufacture of modern skis therefore uses a wide variety of materials: the gliding soles are generally made of polyethylene; the alveolar cores are made of wood or synthetic foam; the edges arranged on the lower edges of the ski are made of steel; reinforcements are often provided in aluminum alloy; the upper surfaces of the ski are made of thermoplastic sheet.
  • the two binders mainly used are epoxies and polyurethanes.
  • binders are not sufficient to easily adhere all the materials that one wishes to use in the composition of a modern ski. To obtain adhesion on certain materials, surface treatments or primers must be used to promote adhesion.
  • the primers are initially in solution in solvents: the solvents react on the substrates to which the primer is applied, causing risks of embrittlement; in in addition, during their evaporation, they are aggressive towards users, they risk causing accidents, and cause harmful pollution.
  • the application of primers must also be carried out with great regularity, in order to obtain a layer of constant thickness, which leads to complex and difficult operations.
  • the primer once applied to a substrate, requires using the substrate relatively quickly for the manufacture of the ski, excluding long-term storage.
  • the object of the present invention is in particular to avoid the drawbacks of known methods, by proposing a new method and a manufacturing and a new ski structure allowing bonding on practically all surfaces of the components of the ski, without requiring surface treatments or coating of primers.
  • the invention allows the bonding of a polyamide sheet as the upper ski surface, by bonding using an epoxy adhesive, a polyester adhesive, or a vinylester adhesive.
  • the method of manufacturing a ski according to the present invention comprises a step of assembling at least two elements by the action of a layer of adhesive between the joining surfaces of the two elements. ; according to the invention, there is interposed between the adhesive layer and the junction surface of one or less of the elements a film in the solid state comprising at least one layer based on grafted polymer or copolymer giving the film properties of compatibility with glue.
  • the film will be called subsequently in the text "compatibilizing" film.
  • the film is advantageously based on polymer or copolymer grafted by the action of carboxylic acid, carboxylic acid anhydride or carboxylic acid ester.
  • a polymer can usefully be grafted by the action of acrylic acid, methacrylic acid, or maleic anhydride, or by a combination of two or three of these products.
  • the grafted polymer can be a polyethylene.
  • the grafted polymer can be a copolymer of ethylene and vinyl acetate (EVA).
  • EVA vinyl acetate
  • ionomer-based film after grafting with an acid, we can neutralize with metal ions such as sodium, zinc or others to obtain an ionomer-based film.
  • an epoxy adhesive or a polyester adhesive to assemble by bonding, with the interposition of such a film based on grafted polyethylene, a first element consisting of one of the following materials: polyamide, untreated polyethylene , polyethylene terephthalate, polybutadiene terephthalate, polypropylene, aluminum alloy, treated aluminum or steel.
  • the method of the invention allows the assembly of a first element 1 and a second element 2, according to their respective joining surfaces 3 and 4, by means of 'a layer of glue 5 interposed between said junction surfaces 3 and 4.
  • the second element 2 is assumed to be compatible with the glue 5, that is to say that the glue 5 has good adhesion on the second element 2.
  • the first element 1 is made of a material which may not have good compatibility with the adhesive 5, that is to say that the adhesive 5 does not have good adhesion on the junction surface. 3 of the first element 1.
  • the first element 1 not having a good adhesion power with the adhesive 5
  • the film 6 is hot-melt.
  • the film 6 must have a bonding face, or face oriented towards the adhesive 5, in a material such that the adhesive 5 has good adhesive power on the film 6.
  • the film must also include an assembly face, or face oriented towards the junction surface 3 of the first element 1, in a material allowing its joining with said junction surface 3 of the first element 1.
  • connection between the film 6 and the first element 1 can be ensured by a chemical or physicochemical bond or by interdiffusion of the polymer chains, or by mechanical anchoring, or by welding.
  • FIGS. 1 to 4 a first possibility, represented in FIGS. 1 to 4, consists in coating the joining surface 4 of the second element 2 with an adhesive 5, as shown in FIG. 3, before assembly by pressing the adhesive layer 5 against the film 6 and obtaining the assembly shown in FIG. 4.
  • a second way of ensuring the joining between the film and the second element 2 can be provided in the case where the second element 2 comprises a junction surface 4 based on polyester resin which is not entirely crosslinked. It is then possible to apply the junction surface 4 of the second element 2 directly against the film 6, and, by heating, the not entirely crosslinked resin of the second element 2 itself ensures the bonding function, the adhesion being obtained by complementing crosslinking of said resin.
  • the film 6 can advantageously be produced by an electrostatic powdering process.
  • a very thin film 6 can be used, with a thickness advantageously between a few microns and a few tenths of a millimeter: a thickness of a few microns may be sufficient.
  • Such a film 6 can in particular be made of grafted polyethylene, for example of polyethylene grafted with maleic anhydride.
  • This embodiment allows, for example, to ensure the bonding by an epoxy adhesive or a polyester adhesive of a first element 1, the junction surface of which is made of one of the following materials: polyrnide, untreated polyethylene, polyethylene terephthalate, polybuta diene terephthalate, polypropylene, treated aluminum, aluminum alloy or steel.
  • the film 6 can consist of a copolymer of ethylene and vinyl acetate (EVA), grafted by the action of carboxylic acid or carboxylic acid anhydride.
  • EVA vinyl acetate
  • a film based on an ionomer can advantageously be used for bonding with an epoxy adhesive or a polyester adhesive of a first element 1, the junction surface of which consists of one of the following materials: untreated polyethylene, aluminum alloy, aluminum treated or steel.
  • a “compatibilizing” film 6 of polyethylene grafted with maleic anhydride allows the bonding of a first polyamide element 1 with an adhesive 5 of epoxy resin.
  • the reaction leads to the substitution of the oxygen atom of the maleic cycle by the aszote atom of the amino terminal group of the polyamide and formation of a water molecule. It is necessary to bring the substrates to temperatures higher than 115 ° C to start the reaction. One can thus hot plate, by calandrag e or pressing, the film 6 against the first element 1 to ensure their joining together.
  • the film 6 can be of the monolayer type, as shown in FIGS. 1 to 4.
  • the film 6 can be of the multilayer type, as shown in FIG. 7, comprising at least a first layer 61 forming an adhesive face compatible with the adhesive 5, and a second layer 62 forming an assembly face compatible with the first item 1.
  • the assembly is carried out in successive stages: during a first step illustrated by FIGS. 1 and 2 the film 6 known as "compatibilizing" is assembled by calendering or hot pressing on the junction surface 3 of the first element 1 having a lack of adhesion with the adhesive 5; the temperature should be raised to the softening point of the film; during a second step, the adhesive 5 is applied to the junction surface 4 of the second element 2, as shown in Figure 3; during a third step, the layers formed by the adhesive 5 and the film 6 are applied against one another, carrying out the assembly as shown in FIG. 4.
  • the method of the invention makes it possible to obtain a ski with a composite structure, comprising at least a first element 1 and a second element 2 secured to one another by an adhesive 5 placed between the two joining surfaces elements, a so-called “compatibilizing” film being placed between the adhesive and the first element 1, said film allowing the elements to be joined by bonding with respect to each other.
  • a so-called "compatibilizing” film of polymer comprising at least one layer consisting of grafted polymers or copolymers.

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  • Adhesives Or Adhesive Processes (AREA)
  • Laminated Bodies (AREA)
  • Making Paper Articles (AREA)
EP90120350A 1989-11-22 1990-10-24 Verfahren zur Herstellung eines geleimten Skis Verfahren zur Herstellung eines geleimten Skis Expired - Lifetime EP0428887B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8915663 1989-11-22
FR8915663A FR2654643B1 (fr) 1989-11-22 1989-11-22 Procede de fabrication d'un ski colle, et structure de ski obtenue par ce procede.

Publications (2)

Publication Number Publication Date
EP0428887A1 true EP0428887A1 (de) 1991-05-29
EP0428887B1 EP0428887B1 (de) 1994-10-05

Family

ID=9387879

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90120350A Expired - Lifetime EP0428887B1 (de) 1989-11-22 1990-10-24 Verfahren zur Herstellung eines geleimten Skis Verfahren zur Herstellung eines geleimten Skis

Country Status (5)

Country Link
EP (1) EP0428887B1 (de)
JP (1) JPH0736850B2 (de)
AT (1) ATE112500T1 (de)
DE (1) DE69013121T2 (de)
FR (1) FR2654643B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0677306A1 (de) * 1994-04-15 1995-10-18 Skis Rossignol S.A. Ski und Verfahren zu dessen Herstellung

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2687925B1 (fr) * 1992-02-27 1994-05-06 Salomon Sa Procede de fabrication d'un ski et ski obtenu par ce procede.
FR2694201B1 (fr) * 1992-07-31 1994-09-23 Salomon Sa Procédé de fabrication d'un ski.
FR2727028B1 (fr) 1994-11-21 1997-01-24 Salomon Sa Procede de fabrication d'un ski colle comprenant une etape de preparation de renfort par voie humide

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2432934A1 (fr) * 1978-08-11 1980-03-07 Kureha Chemical Ind Co Ltd Structure stratifiee de resines thermoplastiques comportant comme adhesif un copolymere sequence modifie par un acide maleique
FR2444563A1 (fr) * 1978-12-22 1980-07-18 Monsanto Co Panneaux en stratifies et procede de fabrication de ces stratifies
WO1981000257A1 (en) * 1979-07-24 1981-02-05 Isovolta Process for preparing sheets of elastomer material and utilisation thereof for sticking
EP0145000A2 (de) * 1983-12-12 1985-06-19 Takeda Chemical Industries, Ltd. Durch Wärme klebende Harzzusammensetzung und damit laminierte Aluminiumplatte
AT382083B (de) * 1984-10-24 1987-01-12 Blizzard Gmbh Mehrschichtenski
FR2627700A1 (fr) * 1988-02-25 1989-09-01 Salomon Sa Procede d'assemblage d'un ski par soudage, et structure de ski ainsi obtenue

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6394838A (ja) * 1986-10-09 1988-04-25 株式会社神戸製鋼所 制振金属板の製造方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2432934A1 (fr) * 1978-08-11 1980-03-07 Kureha Chemical Ind Co Ltd Structure stratifiee de resines thermoplastiques comportant comme adhesif un copolymere sequence modifie par un acide maleique
FR2444563A1 (fr) * 1978-12-22 1980-07-18 Monsanto Co Panneaux en stratifies et procede de fabrication de ces stratifies
WO1981000257A1 (en) * 1979-07-24 1981-02-05 Isovolta Process for preparing sheets of elastomer material and utilisation thereof for sticking
EP0145000A2 (de) * 1983-12-12 1985-06-19 Takeda Chemical Industries, Ltd. Durch Wärme klebende Harzzusammensetzung und damit laminierte Aluminiumplatte
AT382083B (de) * 1984-10-24 1987-01-12 Blizzard Gmbh Mehrschichtenski
FR2627700A1 (fr) * 1988-02-25 1989-09-01 Salomon Sa Procede d'assemblage d'un ski par soudage, et structure de ski ainsi obtenue

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
CHEMICAL ABSTRACTS, vol. 109, 1988, page 68, résumé no. 150987k, Columbus, Ohio, US; & JP-A-63 094 838 (KOBE STEEL LTD) 25-04-1988 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0677306A1 (de) * 1994-04-15 1995-10-18 Skis Rossignol S.A. Ski und Verfahren zu dessen Herstellung
FR2718648A1 (fr) * 1994-04-15 1995-10-20 Rossignol Sa Ski et son procédé de fabrication.

Also Published As

Publication number Publication date
EP0428887B1 (de) 1994-10-05
DE69013121D1 (de) 1994-11-10
FR2654643A1 (fr) 1991-05-24
JPH03176091A (ja) 1991-07-31
DE69013121T2 (de) 1995-01-26
FR2654643B1 (fr) 1992-09-25
ATE112500T1 (de) 1994-10-15
JPH0736850B2 (ja) 1995-04-26

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