SE514041C2 - Method of making a hard rubber keypad - Google Patents

Method of making a hard rubber keypad

Info

Publication number
SE514041C2
SE514041C2 SE9702300A SE9702300A SE514041C2 SE 514041 C2 SE514041 C2 SE 514041C2 SE 9702300 A SE9702300 A SE 9702300A SE 9702300 A SE9702300 A SE 9702300A SE 514041 C2 SE514041 C2 SE 514041C2
Authority
SE
Sweden
Prior art keywords
silicone rubber
resin
keypad
printing
rubber
Prior art date
Application number
SE9702300A
Other languages
Swedish (sv)
Other versions
SE9702300D0 (en
SE9702300L (en
Inventor
Jason Tsai
Original Assignee
Silitek Corp
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 Silitek Corp filed Critical Silitek Corp
Priority to SE9702300A priority Critical patent/SE514041C2/en
Publication of SE9702300D0 publication Critical patent/SE9702300D0/en
Priority to GB9712823A priority patent/GB2326370A/en
Priority to DE19726886A priority patent/DE19726886C2/en
Priority to FR9708525A priority patent/FR2765514A1/en
Publication of SE9702300L publication Critical patent/SE9702300L/en
Publication of SE514041C2 publication Critical patent/SE514041C2/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/702—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
    • H01H13/705—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches characterised by construction, mounting or arrangement of operating parts, e.g. push-buttons or keys
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2209/00—Layers
    • H01H2209/002—Materials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/028—Printed information
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2229/00—Manufacturing
    • H01H2229/044—Injection moulding
    • H01H2229/046—Multi-colour or double shot injection moulding

Landscapes

  • Manufacture Of Switches (AREA)
  • Push-Button Switches (AREA)

Abstract

A process suitable for forming a hard rubber keypad comprises filling a mould with either (a) an epoxy resin or (b) a diallyl phthalate/acrylate copolymer or (c) polycaprolactone resin, hardening the mixture and then adding silicone rubber to the hardened mixture for heated combination at 100-180‹C for 2-15 minutes. The silicone may be liquid extruded silicone rubber or solid press-mould silicone rubber. The keypad formed by this process can then be subjected to printing treatment or can be coated with a layer of a metal such as Ti, Cr or Au and then laser engraved.

Description

10 15 20 514 041 2 plast utnyttja föreliggande uppfinning för erhållande av en hård knappsats; den är en förbättring, som eliminerar bristerna hos konventionella produkter och förbättrar produkteffektiviteten. 10 15 20 514 041 2 plastic utilize the present invention to obtain a hard keypad; it is an improvement, which eliminates the shortcomings of conventional products and improves product efficiency.

Föreliggande uppfinning hänför sig till en knappsats av hårdgummi tillverkad i ett enda stycke omfattande huvudsakligen: dvs: CHTCHCHZo-G- fi-ocnzclzncnzoflffïc v ;H-ocH2c1\¶:)c/H2 1. Epoxiharts, o O OH 0 där n = 0-5 eller CH; CH2= C COOCHzCH-CH; eller 2. Diallylftalat, dvs: 10 15 20 25 30 35 514 041 eller \c-o u Vš O och akrylat, dvs propenylmetakrylat eller 2-hydroxietyl- metakrylatsampolymer, eller 3. Polykaprolaktonharts.The present invention relates to a keypad of hard rubber made in one piece comprehensive mainly: ie: CHTCHCHZo-G- fi- ocnzclzncnzo fl ffïc v; H-ocH2c1 \ ¶:) c / H2 1. Epoxy resin, o O OH 0 where n = 0-5 or CH; CH2 = C COOCH 2 CH-CH; or 2. Diallyl phthalate, ie: 10 15 20 25 30 35 514 041 or \ c-o u Vš O and acrylate, i.e. propenyl methacrylate or 2-hydroxyethyl methacrylate copolymer, or 3. Polycaprolactone resin.

Fyll nämnda epoxiharts, eller diallylftalat-akrylat- sampolymer eller något polykaprolaktonharts i en form med en påfyllningsanordning med ett flertal munstycken, vid en temperatur av lOO°C-l80°C under 2-15 min för härdning, och tillsätt därefter vätskeformigt extruderat silikon- gummi eller fast pressformat silikongummi för varmpress- formning för bildning av ett enda stycke.Fill said epoxy resin, or diallyl phthalate acrylate copolymer or any polycaprolactone resin in a form with a filling device with a plurality of nozzles, at a temperature of 100 ° C-180 ° C for 2-15 minutes for curing, and then add liquid extruded silicone rubber or solid molded silicone rubber for hot pressing shaping to form a single piece.

Användning av nämnda epoxiharts, eller diallylfta- lat-akrylatsampolymer, eller polykaprolaktonharts åstad- kommer enkelt en bindning med vätskeformigt silikongummi eller fast silikongummi utan användning av någon primer mellan de båda.Use of said epoxy resin, or diallylphthalate lat-acrylate copolymer, or polycaprolactone resin comes easily a bond with liquid silicone rubber or solid silicone rubber without the use of any primer between the two.

För att visa det tekniska innehållet i och särdragen hos föreliggande uppfinning beskrivs nedan utförings- exempel, men dessa är inte avsedda att begränsa patent- kravens omfång.To show the technical content and features of the present invention, the embodiments are described below. examples, but these are not intended to limit patent scope of requirements.

Kort beskrivning av ritning Fig l är en vy av en knappsats av hårdgummi enligt uppfinningen.Brief description of drawing Fig. 1 is a view of a hard rubber keypad according to the invention.

Fig 2 är en vy av en knappsats av hårdgummi enligt uppfinningen med yttryckning.Fig. 2 is a view of a hard rubber keypad according to the invention with surface printing.

Fig 3 är en vy av en knappsats av hårdgummi enligt uppfinningen med lasergravering. 10 15 20 25 30 35 -514 041 4 Beskrivning av hänvisningsbeteckningar l silikongummi 2 hård yta 3 färgtryckning 4 metallplätering 5 gravering av tecken eller figurer.Fig. 3 is a view of a hard rubber keypad according to the invention with laser engraving. 10 15 20 25 30 35 -514 041 4 Description of reference numerals l silicone rubber 2 hard surface 3 color printing 4 metal plating 5 engraving of characters or figures.

Utföringsexempel 1 Tag först en lämplig mängd av ovannämnda epoxiharts, beroende på produkthöjden, inställ viskositeten på 450:5O cP, fyll en specificerad mängd i formen, vid lOO°C-150°C, under 2-10 min för varmformning/härdning.Embodiment 1 First take a suitable amount of the above epoxy resin, depending on the product height, set the viscosity to 450: 5O cP, fill a specified amount in the mold, at 100 ° C-150 ° C, for 2-10 minutes for thermoforming / curing.

Anbringa därefter vätskeformigt silikongummi eller fast silikongummi med ovannämnda härdade harts för press- formning, vid 100°C-150°C under 2-10 min behandling.Then apply liquid silicone rubber or solid silicone rubber with the aforementioned cured resin for forming, at 100 ° C-150 ° C for 2-10 minutes treatment.

(Jämför fig 1) Den hårda knappsats, som erhållits vid ovannämnda förfarande, kan behandlas genom screentryckning med färg, eller kan den hårda knappsatsen beläggas med ett skikt av Ti, Cr, Au, etc genom vakuumförångning (vakuumplätering), före lasergravering av kvalificerade tecken, såsom bok- stäver eller figurer, etc. (Jämför fig 2 och 3) Utföringsexempel 2 Samma som exempel 1, men använd ovannämnda diallyl- ftalat-akrylatsampolymer, i beroende av produkthöjden, inställ viskositeten på 450:5O cP, fyll en specificerad mängd i formen vid 120°-150°C under 2-10 min för varm- formning/härdning.(Compare Fig. 1) The hard keypad, obtained from the above procedure, can be processed by screen printing with color, or the hard keypad may be coated with a layer of Ti, Cr, Au, etc. by vacuum evaporation (vacuum plating), before laser engraving of qualified characters, such as rods or figures, etc. (Compare Figures 2 and 3) Embodiment 2 Same as Example 1, but using the above diallyl phthalate-acrylate copolymer, depending on the product height, set the viscosity to 450: 5O cP, fill one specified amount in the mold at 120 ° -150 ° C for 2-10 minutes for heating forming / curing.

Anbringa vätskeformigt silikongummi eller fast sili- kongummi med ovannämnda härdade harts för pressformning vid 100°C-150°C under 2-10 min behandling. (Jämför fig 1) Den så erhållna hårda knappsatsen kan utsättas för en tryckningsprocess enligt exempel 1. (Jämför fig 2 och 3) Utföringsexempel 3 Samma som exempel l, men använd ovannämnda poly- kaprolakton, beroende på produkthöjden, inställ viskosi- 514 041 5 teten vid 450=50 cP, fyll en specificerad mängd i formen vid l20°-150°C under 2-10 min för varmformning/härdning.Apply liquid silicone rubber or solid silicone cone rubber with the aforementioned cured resin for compression molding at 100 ° C-150 ° C for 2-10 minutes treatment. (Compare Fig. 1) The hard keypad thus obtained can be exposed a printing process according to Example 1. (Compare Fig. 2 and 3) Embodiment 3 Same as Example 1, but using the above poly- caprolactone, depending on the product height, adjust the viscosity 514 041 5 at 450 = 50 cP, fill a specified amount into the mold at 120 ° -150 ° C for 2-10 minutes for thermoforming / curing.

Anbringa vätskeformigt silikongummi eller fast sili- kongummi med ovannämnda härdade harts för pressformning vid l00°-170°C under 2-10 min behandling. (Jämför fig l) Den så erhållna hårda knappsatsen kan utsättas för en tryckningsprocess enligt exempel 1. (Jämför fig 2 och 3)Apply liquid silicone rubber or solid silicone cone rubber with the aforementioned cured resin for compression molding at 100 ° -170 ° C for 2-10 minutes treatment. (Compare Fig. 1) The hard keypad thus obtained can be exposed a printing process according to Example 1. (Compare Fig. 2 and 3)

Claims (4)

10 15 20 514 041 PATENTKRAV10 15 20 514 041 PATENT REQUIREMENTS 1. Förfarande för framställning av en knappsats av hàrdgummi i ett enda stycke, vid vilket ett harts an- bringas i en form, k ä n n e t e c k n a t av att hartset utgöres av epoxiharts, diallylftalat-akrylatsam- polymer eller polykaprolakton, att hartset först värme- härdas, varefter silikongummi i flytande eller fast form anbringas på det härdade hartset och utsättes för värme- behandling, och att den erhållna knappsatsen utsättes för en tryckningsprocess.Process for producing a single-piece hard rubber keypad, in which a resin is applied in a mold, characterized in that the resin consists of epoxy resin, diallyl phthalate-acrylate copolymer or polycaprolactone, that the resin is first heat-cured , after which silicone rubber in liquid or solid form is applied to the cured resin and subjected to heat treatment, and the resulting keypad is subjected to a printing process. 2. Förfarande enligt krav l, k ä n n e t e c k - n a t av att silikongummit kan vara antingen ett vätske- formigt extruderat silikongummi eller ett fast pressfor- mat silikongummi, och värmebehandlingen innefattar en temperatur av 100-180°C under en tid av 2-15 min.2. A method according to claim 1, characterized in that the silicone rubber can be either a liquid extruded silicone rubber or a solid molded silicone rubber, and the heat treatment comprises a temperature of 100-180 ° C for a period of 2-15 my. 3. Förfarande enligt krav l, k ä n n e t e c k - n a t av att tryckningen kan antingen vara en yttryck- ningsmetod eller gravyrtryckning.3. A method according to claim 1, characterized in that the printing can be either a surface printing method or gravure printing. 4. Förfarande enligt krav 1, k ä n n e t e c k - av att tryckningsprocessen kan inbegripa ett val Cr, Au och dylikt metallmaterial, n a t av Ti, som metallplä- teras före lasergravering av tecken eller figurer.4. A method according to claim 1, characterized in that the printing process may comprise a choice of Cr, Au and such metal material, n a t of Ti, which is metal plated before laser engraving of characters or figures.
SE9702300A 1997-06-17 1997-06-17 Method of making a hard rubber keypad SE514041C2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
SE9702300A SE514041C2 (en) 1997-06-17 1997-06-17 Method of making a hard rubber keypad
GB9712823A GB2326370A (en) 1997-06-17 1997-06-18 Forming a hard rubber keypad
DE19726886A DE19726886C2 (en) 1997-06-17 1997-06-24 One-piece hard plastic key element and method for producing the same
FR9708525A FR2765514A1 (en) 1997-06-17 1997-07-04 Hard rubber key pad forming process

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
SE9702300A SE514041C2 (en) 1997-06-17 1997-06-17 Method of making a hard rubber keypad
GB9712823A GB2326370A (en) 1997-06-17 1997-06-18 Forming a hard rubber keypad
DE19726886A DE19726886C2 (en) 1997-06-17 1997-06-24 One-piece hard plastic key element and method for producing the same
FR9708525A FR2765514A1 (en) 1997-06-17 1997-07-04 Hard rubber key pad forming process

Publications (3)

Publication Number Publication Date
SE9702300D0 SE9702300D0 (en) 1997-06-17
SE9702300L SE9702300L (en) 1998-12-18
SE514041C2 true SE514041C2 (en) 2000-12-18

Family

ID=27438632

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9702300A SE514041C2 (en) 1997-06-17 1997-06-17 Method of making a hard rubber keypad

Country Status (4)

Country Link
DE (1) DE19726886C2 (en)
FR (1) FR2765514A1 (en)
GB (1) GB2326370A (en)
SE (1) SE514041C2 (en)

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60235317A (en) * 1984-05-08 1985-11-22 信越ポリマ−株式会社 Pushbutton switch member
JPS62271712A (en) * 1986-05-21 1987-11-26 Fuji Rubber Kk Method of molding displaying part of contact point rubber letter
JP2657160B2 (en) * 1992-02-14 1997-09-24 信越ポリマー株式会社 Method of manufacturing cover member for illuminated push button switch
DE69314997T2 (en) * 1992-06-19 1998-03-05 Fuji Polymertech Co Ltd Method for producing a finger button for a hand switch
JP2781799B2 (en) * 1993-04-20 1998-07-30 信越ポリマー株式会社 Cover member for hard key top push button switch
JP2681332B2 (en) * 1993-04-30 1997-11-26 サンアロー株式会社 Keypad and manufacturing method thereof
JP3042358B2 (en) * 1994-03-25 2000-05-15 信越化学工業株式会社 Integrated composite of silicone rubber and epoxy resin and method for producing the same
TW343218B (en) * 1994-03-25 1998-10-21 Shinetsu Chem Ind Co Integral composite consisted of polysiloxane rubber and epoxy resin and process for producing the same
JPH07272589A (en) * 1994-03-29 1995-10-20 Shinano Polymer Kk Cover member for push button switch
GB2288911A (en) * 1994-04-19 1995-11-01 Silitek Corp Key switch
JP2863101B2 (en) * 1994-11-28 1999-03-03 東芝シリコーン株式会社 Integrated molded product of silicone rubber and resin, resin integrated keypad made of silicone rubber, and method of manufacturing the same
JP3011642B2 (en) * 1995-08-31 2000-02-21 信越ポリマー株式会社 Thermosetting resin composition, composite molded article using the same, and cover member for push button switch
TW319875B (en) * 1995-11-01 1997-11-11 Fuji Polymertech Kk
JPH1131038A (en) * 1997-07-03 1999-02-02 Xuli Co Ltd Production of key top of monolithic molding having hard head

Also Published As

Publication number Publication date
SE9702300D0 (en) 1997-06-17
GB9712823D0 (en) 1997-08-20
SE9702300L (en) 1998-12-18
FR2765514A1 (en) 1999-01-08
DE19726886A1 (en) 1999-01-07
DE19726886C2 (en) 2003-10-30
GB2326370A (en) 1998-12-23

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