EP0274179A2 - Manufacture of insole assemblies - Google Patents
Manufacture of insole assemblies Download PDFInfo
- Publication number
- EP0274179A2 EP0274179A2 EP87304822A EP87304822A EP0274179A2 EP 0274179 A2 EP0274179 A2 EP 0274179A2 EP 87304822 A EP87304822 A EP 87304822A EP 87304822 A EP87304822 A EP 87304822A EP 0274179 A2 EP0274179 A2 EP 0274179A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- insole
- forepart
- area
- layer
- assembly
- 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.)
- Withdrawn
Links
Images
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
- A43B7/1405—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form
- A43B7/141—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form having an anatomical or curved form
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
- A43B13/141—Soles; Sole-and-heel integral units characterised by the constructive form with a part of the sole being flexible, e.g. permitting articulation or torsion
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/38—Built-in insoles joined to uppers during the manufacturing process, e.g. structural insoles; Insoles glued to shoes during the manufacturing process
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B17/00—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined
- A43B17/14—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined made of sponge, rubber, or plastic materials
Definitions
- This invention relates to the manufacture of insole assemblies for shoes and has a particularly useful but not exclusive application in relation to women's fashion shoes, whereby any provision for underfoot cushioning tends to increase the internal height of the forepart of the finished shoe and to detract from the appearance of the shoe.
- an insole assembly comprising an insole having a forepart which is flexible and which has a central aperture leaving a margin for lasting about the periphery of the forepart, and a moulded layer of resilient plastics foam material extending over the full area or substantially the full area of the top face of the insole and filling said central aperture, said material being adherent to the insole in said forepart area thereof.
- Said material may be non-adherent to the insole in the heel region thereof during the moulding of the material, for adhesion to the heel region of the insole subsequently.
- a covering of sheet material extends over the layer of plastics foam material.
- the sheet material is trimmed to the shape of the insole in the forepart of the insole and has a marginal portion in said heel region where the foam material in non-adherent to the insole, which marginal portion is bonded to the underside of the layer of foam material.
- the invention also provides a method of making an insole assembly comprising forming an insole which is flexible in at least its forepart area, and which has an aperture in said forepart area leaving a margin for lasting about the periphery of the forepart, and forming a layer of resilient foamed plastics material extending over the full area or substantially the full area of the upper surface of the insole, said plastics material filling said aperture and being secured to said upper surface of the insole in said forepart area thereof.
- a composite insole 10 is made comprising a flexible forepart 11, formed from any suitable material such as is conventionally used for the purpose, and a substantially rigid rear part 12 made from a suitable board material. If desired, a stiffening shank may be secured to the underside of the rear part.
- the two parts are scarfed and bonded together at 13 in the conventional manner.
- An aperture 14 is cut in the forepart 11, leaving a margin 15 of the material along the periphery of the forepart for lasting purposes.
- the aperture insole 10 is then placed in the base part 17 of a mould as shown in Figures 3 and 4 and a metal shim 18 is placed on top of the rigid rear part 12.
- the lid of the mould (not shown) has a shallow recess in its underside which accommodates the projecting edge portion 21 of the cover when the lid is placed on the mould.
- the cover has a wider projecting edge portion about the rigid rear part 12 than about the flexible forepart of the insole, as shown.
- a polyurethane foam is then injected into the mould between the cover 19 and the forepart 11 and shim 18 so that the polyurethane fills the cavity formed by the aperture 14 in the forepart 11 and forms a shaped footbed layer 22 over the forepart 11 and the shim 18.
- the polyurethane adheres stongly to the forepart and to the underside of the cavity 19, but not to the shim.
- the shim can be removed and the rearward parts 23 of the footbed formed by the polyurethane foam are unattached to the board material.
- the projecting edge portions 21 of the cover 19 are then folded under and bonded to the undersurface of the cover in the rearward portions and are trimmed back to the edge of the forepart.
- the profile of upper surface of the foam footbed shaped by the mould lid is convex in the forepart area reducing to zero or nearly zero thickness at the edges of the insole as shown in Figure 5A, but is concave in the rearward area as shown in Figure 5B, conforming to the contour of the sole of the foot.
- the bottom face of the part of the footbed in the aperture is flush with the bottom face of the forepart.
- the upper 24 is lasted to the insole part of the assembly in the normal way and the outsole 25 and then the heel 26 are secured to the insole.
- the heel is secured by heel nails 27 driven through the board material as shown in Figure 7.
- the rear part 23 of the footbed is finally bonded to the board material and so conceals the nail heads.
- the construction is thus highly advantageous in that the filling of the aperture in the forepart with resilient plastic foam provides a cushioning body of resilient material under the major part of the forepart of the foot without causing a commensurate increase in the internal height of the correspoding part of the shoe.
- the effective replacement of the foregoing material in the aperture area by the footbed material gives a good cushioning effect but at the same time improves the flexibility of the shoe.
- ensuring that the rear part of the footbed does not adhere to the board material during manufacture of the insole assembly enables the heel nail heads to be concealed, and when the rear part 23 of the footbed is bonded to the board material, an extremely neat and finished appearance is obtained.
- a board material with a suitable coating which prevents the polyurethane from adhering to the board material.
- the cover material may if desired be omitted or may be bonded to the top surface of the polyurethane in a finishing operation.
Abstract
Description
- This invention relates to the manufacture of insole assemblies for shoes and has a particularly useful but not exclusive application in relation to women's fashion shoes, whereby any provision for underfoot cushioning tends to increase the internal height of the forepart of the finished shoe and to detract from the appearance of the shoe.
- According to this invention there is provided an insole assembly comprising an insole having a forepart which is flexible and which has a central aperture leaving a margin for lasting about the periphery of the forepart, and a moulded layer of resilient plastics foam material extending over the full area or substantially the full area of the top face of the insole and filling said central aperture, said material being adherent to the insole in said forepart area thereof.
- Said material may be non-adherent to the insole in the heel region thereof during the moulding of the material, for adhesion to the heel region of the insole subsequently.
- According to a preferred feature of the invention a covering of sheet material extends over the layer of plastics foam material. Preferably the sheet material is trimmed to the shape of the insole in the forepart of the insole and has a marginal portion in said heel region where the foam material in non-adherent to the insole, which marginal portion is bonded to the underside of the layer of foam material.
- The invention also provides a method of making an insole assembly comprising forming an insole which is flexible in at least its forepart area, and which has an aperture in said forepart area leaving a margin for lasting about the periphery of the forepart, and forming a layer of resilient foamed plastics material extending over the full area or substantially the full area of the upper surface of the insole, said plastics material filling said aperture and being secured to said upper surface of the insole in said forepart area thereof.
- This invention further provides the following description of one embodiment of the invention. The description makes reference to the accompanying diagrammatic drawings in which:
- Figures 1 and 2 are respectively side and plan views illustrating an initial stage in the manufacture of an insole assembly according to the invention,
- Figures 3 and 4 are respectively a sectional side elevation and a plan view (partly cut away) showing the assembly including the insole of Figures 1 and 2 in the base part of a mould for the next stage in the manufacture of the assembly,
- Figure 5 is a sectional side view of the insole assembly after its removal from the mould,
- Figure 5A and 5B are respectively sectional views on the planes 5A-5A and 5B-5B of Figure 5,
- Figure 6 is a view corresponding to Figure 5 and illustrating a characteristic of the finished assembly,
- Figures 6A and 6B are respectively sectional views on the
planes 6A-6A and 6B-6B of Figure 6, and - Figure 7 illustrates the method of incorporating the assembly in a shoe.
- Referring just to Figures 1 and 2, a
composite insole 10 is made comprising aflexible forepart 11, formed from any suitable material such as is conventionally used for the purpose, and a substantially rigidrear part 12 made from a suitable board material. If desired, a stiffening shank may be secured to the underside of the rear part. The two parts are scarfed and bonded together at 13 in the conventional manner. Anaperture 14 is cut in theforepart 11, leaving amargin 15 of the material along the periphery of the forepart for lasting purposes. - The
aperture insole 10 is then placed in thebase part 17 of a mould as shown in Figures 3 and 4 and ametal shim 18 is placed on top of the rigidrear part 12. Acover 19 shaped from a piece of decorative sheet plastics material, the outline of which is indicated at 20 in Figure 4, is placed over the shim and the exposedforepart 11 and extends beyond the mould cavity in the base. The lid of the mould (not shown) has a shallow recess in its underside which accommodates the projectingedge portion 21 of the cover when the lid is placed on the mould. The cover has a wider projecting edge portion about the rigidrear part 12 than about the flexible forepart of the insole, as shown. A polyurethane foam is then injected into the mould between thecover 19 and theforepart 11 andshim 18 so that the polyurethane fills the cavity formed by theaperture 14 in theforepart 11 and forms ashaped footbed layer 22 over theforepart 11 and theshim 18. The polyurethane adheres stongly to the forepart and to the underside of thecavity 19, but not to the shim. Thus when the polyurethane has cured and the assembly is extracted from the mould, the shim can be removed and therearward parts 23 of the footbed formed by the polyurethane foam are unattached to the board material. - The projecting
edge portions 21 of thecover 19 are then folded under and bonded to the undersurface of the cover in the rearward portions and are trimmed back to the edge of the forepart. - The profile of upper surface of the foam footbed shaped by the mould lid is convex in the forepart area reducing to zero or nearly zero thickness at the edges of the insole as shown in Figure 5A, but is concave in the rearward area as shown in Figure 5B, conforming to the contour of the sole of the foot. The bottom face of the part of the footbed in the aperture is flush with the bottom face of the forepart.
- In manfuacture of a shoe, the upper 24 is lasted to the insole part of the assembly in the normal way and the outsole 25 and then the
heel 26 are secured to the insole. The heel is secured byheel nails 27 driven through the board material as shown in Figure 7. Therear part 23 of the footbed is finally bonded to the board material and so conceals the nail heads. - The construction is thus highly advantageous in that the filling of the aperture in the forepart with resilient plastic foam provides a cushioning body of resilient material under the major part of the forepart of the foot without causing a commensurate increase in the internal height of the correspoding part of the shoe. To assist in achieving maximum cushioning effect it is preferred to make the
aperture 14 as big as is practicable while leaving the forepart with adequate mechanical strength and a sufficiently wide margin to permit normal lasting. The effective replacement of the foregoing material in the aperture area by the footbed material gives a good cushioning effect but at the same time improves the flexibility of the shoe. Also, ensuring that the rear part of the footbed does not adhere to the board material during manufacture of the insole assembly enables the heel nail heads to be concealed, and when therear part 23 of the footbed is bonded to the board material, an extremely neat and finished appearance is obtained. - Instead of a shim it may be preferred to use a board material with a suitable coating which prevents the polyurethane from adhering to the board material. The cover material may if desired be omitted or may be bonded to the top surface of the polyurethane in a finishing operation.
Claims (10)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8700349 | 1987-01-08 | ||
GB878700349A GB8700349D0 (en) | 1987-01-08 | 1987-01-08 | Insole assemblies |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0274179A2 true EP0274179A2 (en) | 1988-07-13 |
EP0274179A3 EP0274179A3 (en) | 1989-11-29 |
Family
ID=10610412
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP87304822A Withdrawn EP0274179A3 (en) | 1987-01-08 | 1987-06-01 | Manufacture of insole assemblies |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0274179A3 (en) |
GB (1) | GB8700349D0 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0352650A2 (en) * | 1988-07-25 | 1990-01-31 | HEINZ HARSCH GmbH Schuhfabrik | Insole |
EP0551462A1 (en) * | 1991-08-02 | 1993-07-21 | Interco Inc | Shoe construction. |
WO1998025493A1 (en) * | 1996-12-12 | 1998-06-18 | Etablissements Chupin Batardiere | Sole with air pocket, footwear equipped with such a sole and method for mounting same |
WO2000065944A1 (en) * | 1999-05-03 | 2000-11-09 | Puma Aktiengesellschaft Rudolf Dassler Sport | Insole of a shoe |
US6382789B1 (en) | 1998-09-28 | 2002-05-07 | Essilor International | Toric ophthalmic lenses |
EP1250859A1 (en) * | 2001-04-20 | 2002-10-23 | Salomon S.A., Société anonyme à Directoire et Conseil de Surveillance | Sole for a shoe |
EP1516715A1 (en) * | 2003-09-17 | 2005-03-23 | Spannrit Schuhkomponenten GmbH | Manufacturing method of an orthotic and orthotic made by such a method |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2565662A (en) * | 1949-09-26 | 1951-08-28 | Henry E Mcmahon | Shoe having a cushioning element |
GB907141A (en) * | 1958-01-07 | 1962-10-03 | Johannes Schaller | Shoe sole construction |
US3233348A (en) * | 1961-12-06 | 1966-02-08 | Francis M Gilkerson | Laminated insole |
US3412487A (en) * | 1965-10-11 | 1968-11-26 | Desco Shoe Corp | Insole construction |
GB1139236A (en) * | 1966-09-22 | 1969-01-08 | W W Chamberlain & Sons Ltd | Improvements in or relating to footwear |
DE2458674A1 (en) * | 1973-12-14 | 1975-06-26 | Ernst Meier | METHOD OF MANUFACTURING A SHOE |
GB2057964A (en) * | 1979-09-08 | 1981-04-08 | Shuplas Ltd | Producing padded wearable articles |
-
1987
- 1987-01-08 GB GB878700349A patent/GB8700349D0/en active Pending
- 1987-06-01 EP EP87304822A patent/EP0274179A3/en not_active Withdrawn
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2565662A (en) * | 1949-09-26 | 1951-08-28 | Henry E Mcmahon | Shoe having a cushioning element |
GB907141A (en) * | 1958-01-07 | 1962-10-03 | Johannes Schaller | Shoe sole construction |
US3233348A (en) * | 1961-12-06 | 1966-02-08 | Francis M Gilkerson | Laminated insole |
US3412487A (en) * | 1965-10-11 | 1968-11-26 | Desco Shoe Corp | Insole construction |
GB1139236A (en) * | 1966-09-22 | 1969-01-08 | W W Chamberlain & Sons Ltd | Improvements in or relating to footwear |
DE2458674A1 (en) * | 1973-12-14 | 1975-06-26 | Ernst Meier | METHOD OF MANUFACTURING A SHOE |
GB2057964A (en) * | 1979-09-08 | 1981-04-08 | Shuplas Ltd | Producing padded wearable articles |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0352650A2 (en) * | 1988-07-25 | 1990-01-31 | HEINZ HARSCH GmbH Schuhfabrik | Insole |
EP0352650A3 (en) * | 1988-07-25 | 1991-05-29 | HEINZ HARSCH GmbH Schuhfabrik | Insole |
EP0551462A1 (en) * | 1991-08-02 | 1993-07-21 | Interco Inc | Shoe construction. |
EP0551462A4 (en) * | 1991-08-02 | 1993-12-01 | Interco Incorporated | Shoe construction |
WO1998025493A1 (en) * | 1996-12-12 | 1998-06-18 | Etablissements Chupin Batardiere | Sole with air pocket, footwear equipped with such a sole and method for mounting same |
US6382789B1 (en) | 1998-09-28 | 2002-05-07 | Essilor International | Toric ophthalmic lenses |
WO2000065944A1 (en) * | 1999-05-03 | 2000-11-09 | Puma Aktiengesellschaft Rudolf Dassler Sport | Insole of a shoe |
AU772431B2 (en) * | 1999-05-03 | 2004-04-29 | Puma Aktiengesellschaft Rudolf Dassler Sport | Insole of a shoe |
EP1250859A1 (en) * | 2001-04-20 | 2002-10-23 | Salomon S.A., Société anonyme à Directoire et Conseil de Surveillance | Sole for a shoe |
FR2823648A1 (en) * | 2001-04-20 | 2002-10-25 | Salomon Sa | SHOE SOLE |
EP1516715A1 (en) * | 2003-09-17 | 2005-03-23 | Spannrit Schuhkomponenten GmbH | Manufacturing method of an orthotic and orthotic made by such a method |
Also Published As
Publication number | Publication date |
---|---|
EP0274179A3 (en) | 1989-11-29 |
GB8700349D0 (en) | 1987-02-11 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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AK | Designated contracting states |
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PUAL | Search report despatched |
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RHK1 | Main classification (correction) |
Ipc: A43B 13/40 |
|
17P | Request for examination filed |
Effective date: 19900215 |
|
17Q | First examination report despatched |
Effective date: 19910806 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 19920317 |
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RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: CLARKE, NEIL DAVID |