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WO1992006607A1 - Procede de fabrication de chaussures moulees dans differentes largeurs - Google Patents

Procede de fabrication de chaussures moulees dans differentes largeurs Download PDF

Info

Publication number
WO1992006607A1
WO1992006607A1 PCT/CA1990/000360 CA9000360W WO9206607A1 WO 1992006607 A1 WO1992006607 A1 WO 1992006607A1 CA 9000360 W CA9000360 W CA 9000360W WO 9206607 A1 WO9206607 A1 WO 9206607A1
Authority
WO
WIPO (PCT)
Prior art keywords
footwear
moulded
sole
lower portion
boot
Prior art date
Application number
PCT/CA1990/000360
Other languages
English (en)
Inventor
Icaro Olivieri
René Bourque
Original Assignee
Canstar Sports Group Inc.
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 Canstar Sports Group Inc. filed Critical Canstar Sports Group Inc.
Priority to CA002092550A priority Critical patent/CA2092550A1/fr
Priority to FI931669A priority patent/FI931669A7/fi
Priority to EP90915275A priority patent/EP0553071B1/fr
Priority to DE69018485T priority patent/DE69018485T2/de
Priority to PCT/CA1990/000360 priority patent/WO1992006607A1/fr
Publication of WO1992006607A1 publication Critical patent/WO1992006607A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B7/00—Footwear with health or hygienic arrangements
    • A43B7/14—Footwear with health or hygienic arrangements with foot-supporting parts
    • A43B7/28—Adapting the inner sole or the side of the upper of the shoe to the sole of the foot

Definitions

  • the present invention relates to a method for manufacturing moulded footwear in different widths.
  • Skate and boot widths are handled differently in different markets.
  • boots are made with a larger or average width.
  • many devices are available to accommodate the fit of a boot to feet of different widths such as screw adjusted devices.
  • U.S. patent no. 4,353,173 (Paguet) is an illustration of insoles for skate boots.
  • the insole is secured to a conventional last and the boot upper is finally mounted to same.
  • the present invention relates to a method of manufacturing moulded skate and ski boots having different widths.
  • the process in accordance to the present invention is the manufacture of a thermoplastic moulded footwear (upper) made using the injection moulding method.
  • the upper is made in one piece with the bottom portion having a flange all around and a transverse strap or the like joining the flanges.
  • the idea is to provide the upper and more particularly, the lower portion of same with a weakened area so as to help the thermoforming, therefore a sole with a thin section can be used.
  • the material used is of a thermoplastic elastomer type, which has a specific elasticity and, most importantly, has a thermoforming capability.
  • thermoforming process consists of heating the thermoplastic material forming ; the upper to an optimal point of malleability and then cooling it once it has taken on the desired shape.
  • Another object of the present invention is to provide a moulded boot which will not have the drawbacks of prior art.
  • Still another object of the present invention is to provide such a method to adjust to width of a moulded boot, which is economical to use.
  • Yet another object of the present invention is to provide a method which can easily be adapted to large scale manufacturing.
  • Figures 1 to 7 show the manufacturing process in accordance with a first embodiment of the present invention.
  • Figures 8 to 11 show the manufacturing method in accordance with a second embodiment of the present invention.
  • Figures 12 to 14 show the manufacturing method in accordance with a third embodiment of the present invention.
  • Figure 15 shows examples of the final products.
  • the basic elements of the first embodiment are: an already moulded boot 10 (made according to a conventional manufacturing process) , an insole 15, also already moulded or die cut to the desired width by conventional manufacturing processes and finally, a last diagrammatically indicated by reference numeral 20.
  • the moulded boot 10 is provided with a thinned inner area 25 as shown in figure 2 to receive the insole 15 as it will be described hereinafter.
  • the moulded boot 10 is preferably made in one piece and with a thermoplastic material of the elastomeric type which has a specific elasticity and, most importantly, a thermoforming capability.
  • the insole 15 may also be made of a thermoplastic material.
  • the sole section 30, the front section 35 and the heel section 40 of the insole 15 are designed to define a specific front and heel width. Such insoles of varying widths are much less costly to produce than corresponding boot uppers.
  • the bottom portion 42 of the moulded boot is provided with a "weakened area" 45 so as to allow lateral movement as it is necessary in accordance to the present invention and as it will be appreciated hereinafter.
  • the weakened area 45 comprises two openings 50a and 50b separated by a flange 55. The openings 50a and 50b, and the flange 55 are obtained during the manufacturing process of the moulded boot.
  • the purpose of the weakened area is to allow movement of the lower portion of the moulded boot 10 so as to adjust the width of same.
  • the bottom portion 42 can be provided with more than two openings and alternatively, the bottom portion 42 may comprise a thinner walled section.
  • the first step of the manufacturing process is to position the preformed insole 15 and the moulded boot 10 over the last 20. Then, the moulded boot 10 is stretched to fit snugly over the insole.
  • a side lasting machine (not shown) is used to push the moulded boot 10 against the last 20 to shape the contour and at the same time, nails 60 or other equivalent fixation means are provided on the periphery of the bottom portion 42 of the moulded boot 10.
  • a finishing sole 65 is affixed to the bottom portion 42 of the moulded boot.
  • Thermo-glue (not shown) is applied on the bottom portion, preferably said glue should be applied to both surfaces. Thereafter, the glue is reactivated under heat and the boot 10 and the finishing sole 65 are pressed together.
  • the process described above is mainly used to adjust the moulded boot to a width larger than what has been originally moulded since the boot 10 and the insole 15 are stretched over the last 20.
  • the two other methods described hereinafter are used to adjust the moulded boot 10 to a width smaller that what has been originally moulded.
  • the second embodiment of the manufacturing method is shown, wherein 10 is the pre-moulded boot and 70 represents the thin walled bottom or sole portion. In this particular embodiment.
  • the second embodiment uses the following elements, that is the moulded boot 10 and a last 75 provided with a plurality of vacuum holes 80 connected to a channel 85 and to a vacuum pump (not shown) .
  • the first step of this second embodiment is to place the moulded boot 10 over the last 75.
  • the combination moulded boot and the last (lasted boot) ( Figure 9a) is heated to soften the lower portion 86 of the boot.
  • This heating can be done, for example, by placing the lasted boot in an oven 76 such that onlythe bottom and the sides of the boot 86 are heated ( Figure 9b, cross section) .
  • pressure by means of a vacuum pump (not shown) connected to 85, is applied so as to force the hot thermoplastic of the lower portion 86 to take the configuration of the last 75 ( Figure 10) .
  • a finishing sole 65 is affixed to the boot by using the same method as previously described in the first embodiment ( Figure 11) .
  • the basic elements of the footwear sole mould 95 are a cavity structure 105, the latter essentially consisting of a bottom plate 110 and a pair of complementary side plates 115 and 120.
  • the side plates 115 and 120 are arranged for horizontal reciprocal movement toward and away from each other, as indicated by the arrow B.
  • the bottom plate 110 and the last 90 is arranged for vertical reciprocal movement, as indicated by the arrow C.
  • the inwardly directed surface 125 of the side plates 115 and 120 are contoured so as to define, when the latter is in the illustrated positions thereof, the side walls of a cavity 130, the dimensions, width and shape of which are those of the moulded boot to be obtained.
  • Suitable heating means (not shown) are preferably provided in or in association with the cavity structure 130 and/or the last 90. It is important to mention that the heating of the footwear 10 should be limited to the lower portion 135 of said moulded boot 10.
  • the mould 95 When the lasted boot is well positioned in the mould 95, heat is applied to the mould 95 or as mentioned above, heat can be applied to the last 90, in its lower portion thereof, the last and/or the mould are usually made of metal to permit the best heat transmission. Depending of the nature of the thermoplastic material of the footwear, a specific heating time is chosen to obtain an optimal point of malleability. When this point is achieved, the mould 95 and the last 90 will dictate the width of the boot and once said boot has taken the desired shape, plastic is injected therein to form the sole of the boot. The mould is then cooled and the boot demoulded. Throughout this

Landscapes

  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Abstract

Le procédé décrit, qui sert à fabriquer une chaussure moulée à la largeur désirée, consiste à mouler la structure d'une chaussure comportant une partie supérieure, une partie inférieure et une semelle en matériau thermoplastique; à prévoir dans la semelle de la chaussure une zone affaiblie destinée à permettre un certain déplacement latéral de la partie inférieure, puis à amener de force la partie inférieure de la chaussure sur un organe de réglage de la largeur, afin de régler la partie inférieure de la chaussure moulée à la largeur désirée.
PCT/CA1990/000360 1990-10-19 1990-10-19 Procede de fabrication de chaussures moulees dans differentes largeurs WO1992006607A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CA002092550A CA2092550A1 (fr) 1990-10-19 1990-10-19 Methode de fabrication de chaussures moulees de differentes largeurs
FI931669A FI931669A7 (fi) 1990-10-19 1990-10-19 Menetelmä muotissa valettujen, erilevyisten jalkineiden valmistamiseks i
EP90915275A EP0553071B1 (fr) 1990-10-19 1990-10-19 Procede de fabrication de chaussures moulees dans differentes largeurs
DE69018485T DE69018485T2 (de) 1990-10-19 1990-10-19 Verfahren zum herstellen in formen gefertigten schuhwerks in verschiedenen weiten.
PCT/CA1990/000360 WO1992006607A1 (fr) 1990-10-19 1990-10-19 Procede de fabrication de chaussures moulees dans differentes largeurs

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA002092550A CA2092550A1 (fr) 1990-10-19 1990-10-19 Methode de fabrication de chaussures moulees de differentes largeurs
PCT/CA1990/000360 WO1992006607A1 (fr) 1990-10-19 1990-10-19 Procede de fabrication de chaussures moulees dans differentes largeurs

Publications (1)

Publication Number Publication Date
WO1992006607A1 true WO1992006607A1 (fr) 1992-04-30

Family

ID=4172863

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA1990/000360 WO1992006607A1 (fr) 1990-10-19 1990-10-19 Procede de fabrication de chaussures moulees dans differentes largeurs

Country Status (5)

Country Link
EP (1) EP0553071B1 (fr)
CA (1) CA2092550A1 (fr)
DE (1) DE69018485T2 (fr)
FI (1) FI931669A7 (fr)
WO (1) WO1992006607A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996013183A1 (fr) * 1994-10-27 1996-05-09 Nordica S.P.A. Chausson pour chaussures de sport avec son procede de fabrication
EP0926963A4 (fr) * 1995-12-20 1999-08-04
US8210561B2 (en) 2003-11-24 2012-07-03 Tyrolia Technology Gmbh Ski boots
US8359773B2 (en) 2007-02-02 2013-01-29 Calzaturificio Dal Bello Srl Series of sports shoes, such as ski boots, snowboard boots or suchlike, of different sizes, combination of two or more series and relative method of production

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017223737A1 (de) * 2017-12-22 2019-06-27 Adidas Ag Verfahren zur Herstellung eines Schuhoberteils

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1685717A1 (de) * 1965-06-25 1972-04-27 Superga Spa Nahtloser Schistiefel und Verfahren zu seiner Herstellung
US3848286A (en) * 1974-03-11 1974-11-19 A Kahmann Method of and apparatus for custom molding footwear
FR2348665A1 (fr) * 1976-04-22 1977-11-18 Salomon & Fils F Procede de fabrication d'une chaussure comportant une coque adaptable a la morphologie du pied du porteur

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1685717A1 (de) * 1965-06-25 1972-04-27 Superga Spa Nahtloser Schistiefel und Verfahren zu seiner Herstellung
US3848286A (en) * 1974-03-11 1974-11-19 A Kahmann Method of and apparatus for custom molding footwear
FR2348665A1 (fr) * 1976-04-22 1977-11-18 Salomon & Fils F Procede de fabrication d'une chaussure comportant une coque adaptable a la morphologie du pied du porteur

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996013183A1 (fr) * 1994-10-27 1996-05-09 Nordica S.P.A. Chausson pour chaussures de sport avec son procede de fabrication
EP0926963A4 (fr) * 1995-12-20 1999-08-04
US8210561B2 (en) 2003-11-24 2012-07-03 Tyrolia Technology Gmbh Ski boots
US8359773B2 (en) 2007-02-02 2013-01-29 Calzaturificio Dal Bello Srl Series of sports shoes, such as ski boots, snowboard boots or suchlike, of different sizes, combination of two or more series and relative method of production

Also Published As

Publication number Publication date
FI931669A0 (fi) 1993-04-14
EP0553071A1 (fr) 1993-08-04
FI931669L (fi) 1993-04-14
DE69018485D1 (de) 1995-05-11
DE69018485T2 (de) 1995-07-27
CA2092550A1 (fr) 1992-04-20
EP0553071B1 (fr) 1995-04-05
FI931669A7 (fi) 1993-04-14

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