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 PDFInfo
- 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
- Authority
- 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
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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.
Landscapes
- Laminated Bodies (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Making Paper Articles (AREA)
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)
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)
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)
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)
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 |
-
1989
- 1989-11-22 FR FR8915663A patent/FR2654643B1/fr not_active Expired - Fee Related
-
1990
- 1990-10-24 DE DE69013121T patent/DE69013121T2/de not_active Expired - Fee Related
- 1990-10-24 AT AT90120350T patent/ATE112500T1/de not_active IP Right Cessation
- 1990-10-24 EP EP90120350A patent/EP0428887B1/de not_active Expired - Lifetime
- 1990-11-19 JP JP2311671A patent/JPH0736850B2/ja not_active Expired - Lifetime
Patent Citations (6)
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)
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)
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 |
---|---|
FR2654643A1 (fr) | 1991-05-24 |
DE69013121D1 (de) | 1994-11-10 |
DE69013121T2 (de) | 1995-01-26 |
ATE112500T1 (de) | 1994-10-15 |
EP0428887B1 (de) | 1994-10-05 |
FR2654643B1 (fr) | 1992-09-25 |
JPH0736850B2 (ja) | 1995-04-26 |
JPH03176091A (ja) | 1991-07-31 |
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