US20120151793A1 - Foamed shoe sole - Google Patents
Foamed shoe sole Download PDFInfo
- Publication number
- US20120151793A1 US20120151793A1 US12/974,393 US97439310A US2012151793A1 US 20120151793 A1 US20120151793 A1 US 20120151793A1 US 97439310 A US97439310 A US 97439310A US 2012151793 A1 US2012151793 A1 US 2012151793A1
- Authority
- US
- United States
- Prior art keywords
- covering layer
- outer covering
- foamed
- shoe sole
- sole body
- 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.)
- Abandoned
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/02—Soles; Sole-and-heel integral units characterised by the material
- A43B13/12—Soles with several layers of different materials
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/02—Soles; Sole-and-heel integral units characterised by the material
- A43B13/04—Plastics, rubber or vulcanised fibre
-
- 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
- A43B13/386—Built-in insoles joined to uppers during the manufacturing process, e.g. structural insoles; Insoles glued to shoes during the manufacturing process multilayered
-
- 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
- A43B17/003—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined characterised by the material
- A43B17/006—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined characterised by the material multilayered
-
- 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
- A43B7/1475—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 characterised by the type of support
- A43B7/148—Recesses or holes filled with supports or pads
Definitions
- the invention relates to a shoe sole, and more particularly to a shoe sole that is made from a foam material.
- Conventional shoe soles such as insoles, midsoles and outsoles, are fabricated by directly filling and forming a foam material , such as polyurethane, in a mold.
- a foam material such as polyurethane
- multiple pores formed in the foamed soles will produce substantial surface irregularities and roughness which degrade the esthetic appearance of the formed sole. Therefore, additional processing steps are needed to remove the surface roughness from the foamed soles , which increases the manufacturing cost.
- polyurethane foam has low resistance to abrasion and hydrolysis, shoe soles made therefrom are insufficient to provide good structural strength.
- An object of the present invention is to provide a foamed shoesole that has good appearance and high structural strength.
- a shoe sole comprises a foamed sole body, and an outer covering layer.
- the foamed sole body has a front portion, a heel portion, an intermediate portion interconnecting the front and heel portions, and a peripheral surface surrounding the front, intermediate and heel portions.
- the front, intermediate and heel portions cooperatively define a top surface and a bottom surface.
- the peripheral surface interconnects the top and bottom surfaces.
- the outer covering layer is bonded to and covers entirely the peripheral surface of the sole body.
- FIG. 1 is a perspective view of a foamed shoe sole according to a preferred embodiment of the present invention
- FIG. 2 is a sectional view of the foamed shoe sole of FIG. 1 ;
- FIG. 3 is a sectional view of a foamed shoe sole according to another preferred embodiment of the present invention.
- a foamed shoe sole according to a preferred embodiment of the present invention is shown as having a foamed sole body 2 , and an outer covering layer 3 .
- the shoe sole may be an insole, a midsole or an outsole of a shoe.
- the foamed shoe sole is a midsole.
- the foamed sole body 2 has a front portion 21 , a heel portion 22 , an intermediate portion 23 , and a peripheral surface 24 surrounding the front, intermediate and heel portions 21 , 23 , 22 .
- the front, intermediate and heel portion 21 , 23 , 22 cooperatively define a top surface 201 and a bottom surface 202 .
- the peripheral surface 24 interconnects the top and bottom surfaces 201 , 202 .
- the sole body 2 is made of polyurethane.
- the outer covering layer 3 includes a thin sheet or film 34 that is bonded to and covers entirely the peripheral surface 24 of the foamed sole body 2 .
- the outer covering layer 3 is made from a high density thin sheet, or a thermoplastic blown film using a material selected from the group consisting of polyurethane, thermoplastic polyurethane or a combination thereof.
- the thickness of the outer covering layer 3 preferably ranges from 0.01 mm to 0.02 mm.
- the material of the outer covering layer 3 is thermo-formed into a sheet or film that is not foamed, and is disposed on an inner surface of a mold cavity (not shown). Thereafter, a material of the sole body 2 is filled in the mold cavity to form the sole body 2 and to thermal bond the sole body 2 to the outer covering layer 3 .
- the outer covering layer 3 has a high density structure and is resistant to hydrolysis and wearing. Therefore, the foamed sole body 2 can be protected by the outer covering layer 3 from being hydrolyzed and abraded easily. Because the outer covering layer 3 and the foamed sole body 2 are made of the same or similar material (i.e. polyurethane, thermoplastic polyurethane), they are highly compatible and highly resistant to separation. The combination of the outer covering layer 3 and the foamed sole body 2 exhibits excellent tensile strength that increases the supporting properties of the shoe sole. In addition, because the outer covering layer 3 is a thin sheet or a blown film that provides the sole body 2 with a smooth and waterproof outer surface, further processing of the sole body 2 is unnecessary. Moreover, the smooth outer surface thereof may be colored easily.
- a shoe sole is configured as an outsole which also includes a foamed sole body 2 and an outer covering layer 3 .
- the outer covering layer 3 is bonded not only to the bottom surface 202 of the sole body 2 but also to the peripheral surface 24 of the sole body 2 .
Abstract
A foamed sole body includes a front portion, a heel portion, an intermediate portion interconnecting the front, and heel portions, and a peripheral surface that surrounds the front, intermediate and heel portions and that interconnects top and bottom surfaces of the sole body. An outer covering layer is bonded to and covers entirely the peripheral surface of the sole body. Alternatively, the outer covering layer may cover not only to the bottom surface of the sole body but also the peripheral surface.
Description
- 1. Field of the Invention
- The invention relates to a shoe sole, and more particularly to a shoe sole that is made from a foam material.
- 2. Description of the Related Art
- Conventional shoe soles, such as insoles, midsoles and outsoles, are fabricated by directly filling and forming a foam material , such as polyurethane, in a mold. However, when the foam material is used to make a low density foamed sole, multiple pores formed in the foamed soles will produce substantial surface irregularities and roughness which degrade the esthetic appearance of the formed sole. Therefore, additional processing steps are needed to remove the surface roughness from the foamed soles , which increases the manufacturing cost. Furthermore, because polyurethane foam has low resistance to abrasion and hydrolysis, shoe soles made therefrom are insufficient to provide good structural strength.
- An object of the present invention is to provide a foamed shoesole that has good appearance and high structural strength.
- Accordingly, a shoe sole according to the present invention comprises a foamed sole body, and an outer covering layer. The foamed sole body has a front portion, a heel portion, an intermediate portion interconnecting the front and heel portions, and a peripheral surface surrounding the front, intermediate and heel portions. The front, intermediate and heel portions cooperatively define a top surface and a bottom surface. The peripheral surface interconnects the top and bottom surfaces. The outer covering layer is bonded to and covers entirely the peripheral surface of the sole body.
- Other features and advantages of the present invention will become apparent in the following detailed description of the preferred embodiments with reference to the accompanying drawings, of which:
-
FIG. 1 is a perspective view of a foamed shoe sole according to a preferred embodiment of the present invention; -
FIG. 2 is a sectional view of the foamed shoe sole ofFIG. 1 ; and -
FIG. 3 is a sectional view of a foamed shoe sole according to another preferred embodiment of the present invention. - Before the present invention is described in greater detail with reference to the accompanying preferred embodiments, it should be noted here in that like elements are denoted by the same reference numerals throughout the disclosure.
- Referring to
FIGS. 1 and 2 , a foamed shoe sole according to a preferred embodiment of the present invention is shown as having a foamedsole body 2, and anouter covering layer 3. The shoe sole may be an insole, a midsole or an outsole of a shoe. In this embodiment, the foamed shoe sole is a midsole. - The foamed
sole body 2 has afront portion 21, aheel portion 22, anintermediate portion 23, and aperipheral surface 24 surrounding the front, intermediate andheel portions heel portion top surface 201 and abottom surface 202. Theperipheral surface 24 interconnects the top andbottom surfaces sole body 2 is made of polyurethane. - The outer covering
layer 3 includes a thin sheet orfilm 34 that is bonded to and covers entirely theperipheral surface 24 of the foamedsole body 2. Preferably, theouter covering layer 3 is made from a high density thin sheet, or a thermoplastic blown film using a material selected from the group consisting of polyurethane, thermoplastic polyurethane or a combination thereof. The thickness of theouter covering layer 3 preferably ranges from 0.01 mm to 0.02 mm. - In fabrication, the material of the
outer covering layer 3 is thermo-formed into a sheet or film that is not foamed, and is disposed on an inner surface of a mold cavity (not shown). Thereafter, a material of thesole body 2 is filled in the mold cavity to form thesole body 2 and to thermal bond thesole body 2 to theouter covering layer 3. - The
outer covering layer 3 has a high density structure and is resistant to hydrolysis and wearing. Therefore, the foamedsole body 2 can be protected by the outer coveringlayer 3 from being hydrolyzed and abraded easily. Because theouter covering layer 3 and the foamedsole body 2 are made of the same or similar material (i.e. polyurethane, thermoplastic polyurethane), they are highly compatible and highly resistant to separation. The combination of theouter covering layer 3 and the foamedsole body 2 exhibits excellent tensile strength that increases the supporting properties of the shoe sole. In addition, because theouter covering layer 3 is a thin sheet or a blown film that provides thesole body 2 with a smooth and waterproof outer surface, further processing of thesole body 2 is unnecessary. Moreover, the smooth outer surface thereof may be colored easily. - Referring to
FIG. 3 , a shoe sole according to another preferred embodiment of the present invention is configured as an outsole which also includes a foamedsole body 2 and anouter covering layer 3. However, theouter covering layer 3 is bonded not only to thebottom surface 202 of thesole body 2 but also to theperipheral surface 24 of thesole body 2. - While the present invention has been described in connection with what are considered the most practical and preferred embodiments, it is understood that this invention is not limited to the disclosed embodiments but is intended to cover various arrangements included within the spirit and scope of the broadest interpretation so as to encompass all such modifications and equivalent arrangements.
Claims (5)
1. A shoe sole comprising:
a foamed sole body having a front portion, a heel portion, an intermediate portion interconnecting said front and heel portions, and a peripheral surface surrounding said front, intermediate and heel portions, said front, intermediate and heel portions cooperatively defining a top surface and a bottom surface, said peripheral surface interconnecting said top and bottom surfaces; and
an outer covering layer bonded to and covering entirely said peripheral surface of said sole body.
2. The shoe sole of claim 1 , wherein said outer covering layer has a thickness ranging from 0.01 mm to 0.2 mm.
3. The shoe sole of claim 2 , wherein said outer covering layer is a film that is not foamed.
4. The shoe sole of claim 3 , wherein said outer covering layer is made of a material selected from a group consisting of thermosetting polyurethane, and thermoplastic polyurethane.
5. The shoe sole of claim 1 , wherein said outer covering layer further covers said bottom surface of said sole body.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/974,393 US20120151793A1 (en) | 2010-12-21 | 2010-12-21 | Foamed shoe sole |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/974,393 US20120151793A1 (en) | 2010-12-21 | 2010-12-21 | Foamed shoe sole |
Publications (1)
Publication Number | Publication Date |
---|---|
US20120151793A1 true US20120151793A1 (en) | 2012-06-21 |
Family
ID=46232511
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/974,393 Abandoned US20120151793A1 (en) | 2010-12-21 | 2010-12-21 | Foamed shoe sole |
Country Status (1)
Country | Link |
---|---|
US (1) | US20120151793A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103416906A (en) * | 2013-08-13 | 2013-12-04 | 普立优高分子(福建)有限公司 | Novel insole |
US20150082668A1 (en) * | 2012-05-10 | 2015-03-26 | Asics Corporation | Shoe Sole Having Outsole and Midsole |
US20150257478A1 (en) * | 2014-03-16 | 2015-09-17 | Jonathon Lee Williams | Extra-Thick 100% Memory Foam Flat Insoles |
US20160037860A1 (en) * | 2014-08-05 | 2016-02-11 | Nike, Inc. | Sole structure for an article of footwear with spaced recesses |
US20210251334A1 (en) * | 2018-08-30 | 2021-08-19 | Asics Corporation | Shoe sole member and shoe |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4288503A (en) * | 1978-06-16 | 1981-09-08 | Amerace Corporation | Laminated microporous article |
US5733647A (en) * | 1992-11-05 | 1998-03-31 | Polymer Innovations, Inc. | Insole |
US6280815B1 (en) * | 1998-10-30 | 2001-08-28 | 3M Innovative Properties Company | Custom-formable shoe insert |
US20050241186A1 (en) * | 2004-04-16 | 2005-11-03 | Ron Mulligan | Thermoplastic printed film innersole for shoes |
-
2010
- 2010-12-21 US US12/974,393 patent/US20120151793A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4288503A (en) * | 1978-06-16 | 1981-09-08 | Amerace Corporation | Laminated microporous article |
US5733647A (en) * | 1992-11-05 | 1998-03-31 | Polymer Innovations, Inc. | Insole |
US6280815B1 (en) * | 1998-10-30 | 2001-08-28 | 3M Innovative Properties Company | Custom-formable shoe insert |
US20050241186A1 (en) * | 2004-04-16 | 2005-11-03 | Ron Mulligan | Thermoplastic printed film innersole for shoes |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150082668A1 (en) * | 2012-05-10 | 2015-03-26 | Asics Corporation | Shoe Sole Having Outsole and Midsole |
US9775402B2 (en) * | 2012-05-10 | 2017-10-03 | Asics Corporation | Shoe sole having outsole and midsole |
CN103416906A (en) * | 2013-08-13 | 2013-12-04 | 普立优高分子(福建)有限公司 | Novel insole |
US20150257478A1 (en) * | 2014-03-16 | 2015-09-17 | Jonathon Lee Williams | Extra-Thick 100% Memory Foam Flat Insoles |
US20160037860A1 (en) * | 2014-08-05 | 2016-02-11 | Nike, Inc. | Sole structure for an article of footwear with spaced recesses |
CN106793848A (en) * | 2014-08-05 | 2017-05-31 | 耐克创新有限合伙公司 | For the footwear sole construction of the footwear product with interval recess |
US10674789B2 (en) * | 2014-08-05 | 2020-06-09 | Nike, Inc. | Sole structure for an article of footwear with spaced recesses |
US20210251334A1 (en) * | 2018-08-30 | 2021-08-19 | Asics Corporation | Shoe sole member and shoe |
US11889888B2 (en) * | 2018-08-30 | 2024-02-06 | Asics Corporation | Shoe sole member and shoe |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: FABRICOAT INDUSTRIAL CORP., TAIWAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:LIN, KWANG-HUO;REEL/FRAME:026054/0740 Effective date: 20101208 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |