CA2737919A1 - Multilayer laminate footwear insole - Google Patents
Multilayer laminate footwear insole Download PDFInfo
- Publication number
- CA2737919A1 CA2737919A1 CA2737919A CA2737919A CA2737919A1 CA 2737919 A1 CA2737919 A1 CA 2737919A1 CA 2737919 A CA2737919 A CA 2737919A CA 2737919 A CA2737919 A CA 2737919A CA 2737919 A1 CA2737919 A1 CA 2737919A1
- Authority
- CA
- Canada
- Prior art keywords
- insole
- layer
- channel
- multilayer laminate
- footwear insole
- 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
- 239000004744 fabric Substances 0.000 claims description 30
- 238000000034 method Methods 0.000 claims description 30
- 238000005520 cutting process Methods 0.000 claims description 17
- 239000006260 foam Substances 0.000 claims description 15
- 239000000499 gel Substances 0.000 claims description 13
- 229920002635 polyurethane Polymers 0.000 claims description 7
- 239000004814 polyurethane Substances 0.000 claims description 7
- 229920001935 styrene-ethylene-butadiene-styrene Polymers 0.000 claims description 6
- 239000000835 fiber Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 229920000642 polymer Polymers 0.000 claims description 4
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 3
- 239000000017 hydrogel Substances 0.000 claims description 3
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims description 3
- 239000000463 material Substances 0.000 description 15
- -1 polypropylene Polymers 0.000 description 7
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 5
- 229920000728 polyester Polymers 0.000 description 4
- 239000004743 Polypropylene Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 230000037303 wrinkles Effects 0.000 description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 244000025254 Cannabis sativa Species 0.000 description 1
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 1
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 244000082204 Phyllostachys viridis Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 229920002334 Spandex Polymers 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 235000009120 camo Nutrition 0.000 description 1
- 235000005607 chanvre indien Nutrition 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000011487 hemp Substances 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000004759 spandex Substances 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B3/00—Footwear characterised by the shape or the use
- A43B3/26—Footwear characterised by the shape or the use adjustable as to length or size
-
- 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
Landscapes
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Abstract
Disclosed is a multilayer laminate footwear insole with a top layer and a bottom layer with at lease one cushioning layer, in which a channel transects the top layer of the insole and one or more punctuations in the channel transect the bottom layer of the insole.
Description
MULTILAYER LAMINATE FOOTWEAR INSOLE
Field of the Invention The present invention relates to multilayer laminate footwear insoles, methods for manufacturing the insoles and methods for sizing the insoles.
Background Removable insoles are generally inserted into shoes, in order to provide added cushioning and support for the wearer of the shoes. These insoles are typically made as a one-size-fits-all product, and the consumer purchasing the insoles must trim them to an appropriate size using scissors or similar means to cut through the material of the insoles.
An insole is generally constructed ofmultiple layers of material, many of which are not easily cut with scissors by consumers. To cut through the material, the consumer must carefully follow a trim pattern that is printed on, molded in or applied to the insole. Consumers typically do not like to trim insoles with scissors for fear of misaligning the pattern while cutting or not cutting the correct mark on the pattern.
C.S. Patent No. 4,864,740 describes a disposable hygienic shoe insole having three layers: a top layer of spunbonded polypropylene material, a composite layer of pulp fibers and polypropylene fibers meitblown onto the top layer, and a bottom layer of polyethylene vinyl acetate meitblown onto the composite layer. The insole includes line perforations at the front and inner arch portions of the insole to allow a user to reduce the length and width of the insole. In addition, the insole includes lines of perforation across an arch area of the insole. These latter lines of perforation allow the length of the insole to be shortened by tearing off a portion of the arch area of the insole and subsequently reattaching toe and heel sections of the insole.
C.S. Patent No. 6,526,676 describes a disposable sandal formed of a piece of sheet material including a fabric laminated to polyurethane foam. A series of perforations are provided at the heel and/or toe portions of the sole of the sandal to allow the sandals to be sized to a user`s foot.
Field of the Invention The present invention relates to multilayer laminate footwear insoles, methods for manufacturing the insoles and methods for sizing the insoles.
Background Removable insoles are generally inserted into shoes, in order to provide added cushioning and support for the wearer of the shoes. These insoles are typically made as a one-size-fits-all product, and the consumer purchasing the insoles must trim them to an appropriate size using scissors or similar means to cut through the material of the insoles.
An insole is generally constructed ofmultiple layers of material, many of which are not easily cut with scissors by consumers. To cut through the material, the consumer must carefully follow a trim pattern that is printed on, molded in or applied to the insole. Consumers typically do not like to trim insoles with scissors for fear of misaligning the pattern while cutting or not cutting the correct mark on the pattern.
C.S. Patent No. 4,864,740 describes a disposable hygienic shoe insole having three layers: a top layer of spunbonded polypropylene material, a composite layer of pulp fibers and polypropylene fibers meitblown onto the top layer, and a bottom layer of polyethylene vinyl acetate meitblown onto the composite layer. The insole includes line perforations at the front and inner arch portions of the insole to allow a user to reduce the length and width of the insole. In addition, the insole includes lines of perforation across an arch area of the insole. These latter lines of perforation allow the length of the insole to be shortened by tearing off a portion of the arch area of the insole and subsequently reattaching toe and heel sections of the insole.
C.S. Patent No. 6,526,676 describes a disposable sandal formed of a piece of sheet material including a fabric laminated to polyurethane foam. A series of perforations are provided at the heel and/or toe portions of the sole of the sandal to allow the sandals to be sized to a user`s foot.
U.S. Patent No. 3,925,914 describes a sandal, whose sole member may be made of a laminate having a bottom layer of thermoplastic material and a top layer of fibrous material. The sole member may be provided with rows of holes at the toe and heel ends, in order to allow the sandal to be shortened by breaking away a portion of the sole member at the holes. The holes do not go through the entire sole, but instead, a break-away or tear-away portion is left at the bottom of each hole.
However, none of the aforementioned references describes an insole, that may be cleanly sized by a consumer without the use of mechanical cutting instruments.
Summary Accordingly, a need has been recognized for a footwear insole that may be sized simply, neatly and without use of a mechanical cutting instrument by a consumer.
In a non-limiting embodiment of the present invention, a multilayer laminate footwear insole comprising a top layer having a top surface, a bottom layer having a bottom surface, wherein the bottom layer includes at least one cushioning layer, a channel in the insole, wherein the channel transects the top layer of the insole, and one or more punctuations in the channel, wherein the punctuation transects the bottom layer of the insole.
In an alternative non-limiting embodiment of the invention, the channel completely transects the top layer.
In an alternative non-limiting embodiment of the invention, the punctuation in the channel transects the bottom surface of the bottom layer.
In an alternative non-limiting embodiment of the invention, the channel penetrates at least part of the bottom layer.
In an alternative non-limiting embodiment of the invention, the channel traverses the top surface of the top layer from opposing edges of the insole.
In an alternative non-limiting embodiment of the invention, the at least one cushioning layer is a foam layer.
However, none of the aforementioned references describes an insole, that may be cleanly sized by a consumer without the use of mechanical cutting instruments.
Summary Accordingly, a need has been recognized for a footwear insole that may be sized simply, neatly and without use of a mechanical cutting instrument by a consumer.
In a non-limiting embodiment of the present invention, a multilayer laminate footwear insole comprising a top layer having a top surface, a bottom layer having a bottom surface, wherein the bottom layer includes at least one cushioning layer, a channel in the insole, wherein the channel transects the top layer of the insole, and one or more punctuations in the channel, wherein the punctuation transects the bottom layer of the insole.
In an alternative non-limiting embodiment of the invention, the channel completely transects the top layer.
In an alternative non-limiting embodiment of the invention, the punctuation in the channel transects the bottom surface of the bottom layer.
In an alternative non-limiting embodiment of the invention, the channel penetrates at least part of the bottom layer.
In an alternative non-limiting embodiment of the invention, the channel traverses the top surface of the top layer from opposing edges of the insole.
In an alternative non-limiting embodiment of the invention, the at least one cushioning layer is a foam layer.
In an alternative non-limiting embodiment of the invention, the foam layer comprises at least one of polyurethane, ethylene vinyl acetate copolymer and styrene-ethylene-butadiene-styrene.
In an alternative non-limiting embodiment of the invention, the at least one cushioning layer is a gel layer.
In an alternative non-limiting embodiment of the invention, the gel layer comprises at least one of polyurethane, styrene-ethylene-butadiene-styrene, silicone or hydrogel.
In an alternative non-limiting embodiment of the invention, the top layer includes at least one fabric layer.
In an alternative non-limiting embodiment of the invention, at least one fabric layer comprises at least one of a polymer or natural fiber.
In an alternative non-limiting embodiment of the invention, the channel is laser cut.
In an alternative non-limiting embodiment of the invention, the punctuation is made in predetermined patterns.
In another non-limiting embodiment of the present invention, a method for manufacturing a multilayer laminate footwear insole having a top layer with a top surface, a bottom layer with a bottom surface, wherein the bottom layer includes at least one cushioning layer, comprises the steps of cutting a channel in the top surface of the top layer of the insole, wherein the channel transects the top layer of the insole, and punctuating the bottom layer in the channel.
In an alternative non-limiting embodiment of the invention, the punctuation transects the bottom surface of the bottom layer of the insole.
In an alternative non-limiting embodiment of the invention, the cutting includes cutting two or more channels.
In an alternative non-limiting embodiment of the invention, the top layer is partially transected by the channel.
In an alternative non-limiting embodiment of the invention, the at least one cushioning layer is a gel layer.
In an alternative non-limiting embodiment of the invention, the gel layer comprises at least one of polyurethane, styrene-ethylene-butadiene-styrene, silicone or hydrogel.
In an alternative non-limiting embodiment of the invention, the top layer includes at least one fabric layer.
In an alternative non-limiting embodiment of the invention, at least one fabric layer comprises at least one of a polymer or natural fiber.
In an alternative non-limiting embodiment of the invention, the channel is laser cut.
In an alternative non-limiting embodiment of the invention, the punctuation is made in predetermined patterns.
In another non-limiting embodiment of the present invention, a method for manufacturing a multilayer laminate footwear insole having a top layer with a top surface, a bottom layer with a bottom surface, wherein the bottom layer includes at least one cushioning layer, comprises the steps of cutting a channel in the top surface of the top layer of the insole, wherein the channel transects the top layer of the insole, and punctuating the bottom layer in the channel.
In an alternative non-limiting embodiment of the invention, the punctuation transects the bottom surface of the bottom layer of the insole.
In an alternative non-limiting embodiment of the invention, the cutting includes cutting two or more channels.
In an alternative non-limiting embodiment of the invention, the top layer is partially transected by the channel.
In an alternative non-limiting embodiment of the invention, the channel is cut using a laser.
In yet another non-limiting embodiment of the present invention, a method of reducing a dimension of a multilayer laminate footwear insole for altering a size of an insole having a predetermined punctuated channel, comprises the step of tearing the insole by hand along the predetermined punctuated channel.
Other features and aspects of the present invention will become more fully apparent from the following brief description of the drawings, the detailed description of the non-limiting embodiments, the appended claims and the accompanying drawings.
Brief Description of the Drawings FIG. 1 is a schematic plan view of an embodiment of an exemplary footwear insole.
FIG. 2 is a schematic cross-sectional view, along line A-A', of the embodiment of the exemplary footwear insole of FIG. 1.
FIG. 3A is a schematic view of a laser cutter cutting a channel into a footwear insole, according to a non-limiting embodiment of the present invention.
FIG. 3B is a schematic cross-sectional view of the embodiment of a footwear insole of FIG. 3A, having a channel produced by the laser cutter of FIG. 3A.
FIG. 3C is a detail of the schematic cross-sectional view shown in FIG. 3B.
FIG. 3D is a schematic cross-sectional view of an alternative, non-limiting embodiment of the present invention of a footwear insole of FIG. 3A, having a channel produced by the laser cutter of FIG. 3A, partially transecting the top layer.
FIG. 3E is a detail of the schematic cross-sectional view shown in FIG. 3D.
FIG. 4A is a schematic plan view of a footwear insole, according to a non-limiting embodiment of the present invention having a plurality of channels.
-FIG. 4B is a schematic cross-sectional view, along line B-B', of the non-limiting embodiment of a footwear insole of FIG. 4A, completely transecting the top layer.
FIG. 5A is a schematic plan view of a footwear insole, according to another non-limiting embodiment of the present invention, illustrated with six channels that traverse the top layer.
FIG. 5B is a schematic cross-sectional view, along line D-D', of the non-limiting embodiment of a footwear insole of FIG. 5A.
FIG. 5C is a schematic cross-sectional view, along line C-C', of the non-limiting embodiment of a footwear insole of FIG. 5A.
FIG. 5D is an alternative, schematic cross-sectional view along line C-C', of the non-limiting embodiment of a footwear insole of FIG. 5A, wherein the punctuation does not transect the bottom surface of the bottom layer.
FIG. 6 is a flow chart of a method for manufacturing a multilayer laminate footwear insole, according to a non-limiting embodiment of the present invention.
FIG. 7 is a flow chart of a method for reducing a dimension of a multilayer laminate footwear insole, according to a non-limiting embodiment of the present invention.
Detailed Description of the Embodiments A need has been recognized for a footwear insole, whose size may be adjusted by consumers without mechanical cutting instruments such as scissors, even when the insole includes a layer or layers of high-strength fabric and/or high-strength and/or elastic cushioning materials.
FIG. 1 is a schematic plan view, and FIG. 2 a schematic cross-sectional view along line A-A', of a non-limiting embodiment of an exemplary footwear insole 10.
The footwear insole 10 includes a toe portion 20, a heel portion 30 and a medial arch portion 40 interconnecting the toe and heel portions 20, 30. The insole may also include a top layer 50 and a bottom layer 60 affixed to the top layer 50. The top layer 50 may include one or more fabric layers, and the bottom layer 60 may include one or more cushioning layers, such as foam layers and gel layers. However, the top layer 50 may also include foam and/or gel layers. For the sake of simplicity, though, the embodiments discussed in the following will include a top layer 50 made of a layer of fabric and a bottom layer 60 made of a layer of foam or gel. The fabric layer 50 may include at least one polymer or natural fiber such as polyester, acetate, polyethene, acrylic, nylon, rayon, spandex, wool, cotton, silk, bamboo, linen, hemp, urethane, or any material that can be ablated by a laser. In addition, fabric layer 50 may include at least one film, such as polyethylene, polyurethane, or any other material that can be ablated by a laser. Any foam layer used as the bottom layer 60 may include at least one of polyurethane, ethylene vinyl acetate copolymer, styrene-ethylene-butadiene-styrene or other suitable materials for cushioning. Any gel layer used as the bottom layer 60 may include at least one of polyurethane, styrene-ethylene-butadiene-styrene, silicone, hydrogel or other suitable materials for cushioning. The footwear insole 10 may take any of a variety of shapes in order to fit within a variety of shoes.
Also, the footwear insole 10 may have any of a variety of contoured, flat, curved, or other surfaces in order to fit within a variety of shoes. Further, the tear strength of the top layer may be greater than the tear strength of the bottom layer.
FIG. 3A is a schematic view of a laser cutter cutting a channel into a footwear insole 110, according to an embodiment of the present invention. The laser cutter 112 focuses a laser beam 114 onto the footwear insole 110 (shown in cross-section) and is moved across a surface of the footwear insole 110 so as to cut a depression or channel 116 into the footwear insole 110. The laser cutter can cut channels of varying width and depth. An example of a laser cutter used to cut the channel 116 is an Epilog Mini 24, 35 Watt laser, manufactured by Epilog Laser of Golden, Colorado. FIG. 3B
is a schematic cross-sectional view of the non-limiting embodiment of the footwear insole 110 of FIG. 3A, having a channel produced by the laser cutter of FIG. 3A, and FIG.
3C is a detail of the schematic cross-sectional view shown in FIG. 3B, indicated by a dashed circle 118. As illustrated in FIGS. 3B and 3C, the channel 116 may be cut completely through a top fabric layer 150 of the footwear insole 110. In addition, the channel 116 may extend partially into a bottom foam or gel layer 160.
Examples of settings on the Epilog Mini 24 laser that allowed the laser to burn through essentially only the fabric layer 150 of an exemplary polyester knit lamination were 100% speed, 50% power, 400 DPI (dots per inch) and 500 Hz.
This exemplary polyester knit lamination was comprised of a polyester knit fabric bonded to a urethane film using a hot melt urethane adhesive, in which the fabric laminate was molded to urethane foam using an open cast urethane molding technique. For different materials that may make up the fabric layer, a person having ordinary skill in the art would be able to modify the settings of the laser depending upon the different material properties of the fabric layer, such as thickness, density, moisture content, and other properties. For example, for a thicker fabric layer, a person having ordinary skill in the art would be able to adjust the various settings, such as power, of the laser in order to cut through the fabric layer.
FIG. 3D is an alternative schematic cross-sectional view of a non-limiting embodiment of a footwear insole 110, having a channel produced by the laser cutter of FIG. 3A, and FIG. 3E is a detail of the alternative schematic cross-sectional view shown in FIG. 3D, indicated by a dashed circle 119. As illustrated in FIGS. 3D
and 3E, the channel 116 may be cut substantially into the top fabric layer 150 of the footwear insole 110, such that the channel 116 does not extend into a bottom foam or gel layer 160. Further, the channel may be cut to other various depths (not illustrated) ranging from only partially cutting into a top fabric layer 150 to both completely cutting through a top fabric layer 150 and substantially cutting into a bottom foam or gel layer 160 of the footwear insole 110. In each of these non-limiting embodiments, a clean and neat tear line results when a consumer tears along the predetermined channel.
FIG. 4A is a schematic plan view of a footwear insole 210, according to a non-limiting embodiment of the present invention, and FIG. 4B is a schematic cross-sectional view, along line B-B', of the embodiment of a footwear insole 210 of FIG.
4A. The footwear insole 210 includes a toe portion 220, a heel portion 230 and a medial arch portion 240 interconnecting the toe and heel portions 220, 230.
The insole 210 includes a top layer 250 of fabric and a bottom layer 260 of cushioning material affixed to the top layer 250. However, the top layer 250 may also include multiple fabric layers, and the bottom layer 260 may include multiple cushioning material layers. A channel 216 cut by the laser cutter 112 is situated in the toe portion 220 of the insole 210. FIG. 4A illustrates three separate channel cuts 216 in the toe portion 220 of the insole 210. The channel 216 extends laterally and curvilinearly across the top surface of the insole 210 and is configured to correspond to a possible shoe size of a user. In addition, as illustrated in FIG. 4B, the channel 216 may extend approximately perpendicularly through the top layer 250 and partially into the bottom layer 260. Optionally, a channel 226 cut by the laser cutter 112 is situated in the heel portion 230 of the insole 210. FIG. 4A illustrates separate channel cuts 226 in the heel portion 230 of the insole 210. The channel 226 extends laterally and curvilinearly across the top surface of the insole 210 with a direction of curvature opposite to a direction of curvature of channel 216. A channel 236 cut by the laser cutter 112 is situated in the medial arch portion 240 of the insole 210 and extends curvilinearly and longitudinally with respect to the insole 210. The insole 210 may include one or more channels 216 in the toe portion 220, one or more channels 226 in the heel portion 230, and/or one or more channels 236 in the medial arch portion 240.
Furthermore, with respect to channels 216, 226, 236, cutting the channels 216, 226, 236 with the laser cutter 112 advantageously produces a clean cut line in the fabric layer 250. In addition, if the fabric layer 250 includes a polymer fabric, the laser beam 114 cauterizes the fabric layer 250, thereby preventing the fabric from fraying at the cut line.
Further with respect to FIGS. 4A and 4B, the bottom foam layer 260 may have a relatively low tear strength, e.g., less than 10 lbsf, for the user to tear the insole 210 cleanly and easily along the channels 216, 226, 236. However, the bottom foam layer 260 may also have a sufficiently high modulus of elasticity, or flexural modulus, in order to ensure that the insole 210 does not permanently bend or wrinkle along the channels 216, 226, 236 when slipped into an article of footwear.
FIG. 5A is a schematic plan view of a footwear insole 310, according to another non-limiting embodiment of the present invention. FIG. 5B is a schematic cross-sectional view of the non-limiting embodiment of a footwear insole 310 of FIG.
5A along line D-D'. FIGS. 5C and 5D are alternative, schematic cross-sectional views of the non-limiting embodiment of a footwear insole 310 of FIG. 5A along line C-C'. As in the embodiment shown in FIG. 4A, the footwear insole 310 includes a toe portion 320, a heel portion 330 and a medial arch portion 340 interconnecting the toe and heel portions 320, 330. In addition, the footwear insole 310 includes a top layer 350 of fabric and a bottom layer 360 made of a cushioning material. The insole 310 further includes a laser-cut channel 316, which is situated in the toe portion 320 of the insole 310 and runs laterally and curvilinearly across the top surface of the insole 310. As illustrated in FIG. 513, the channel 316 may extend through the top layer 350 and partially into the bottom layer 360. FIG. 5A illustrates three separate channel cuts 316 in the toe portion 320 of the insole 310. In addition, the insole 310 may further include a laser-cut channel 326, which is situated in the heel portion 330 of the insole 310 and runs laterally and curvilinearly across the top surface of the insole 310 with a direction of curvature opposite to a direction of curvature of channel 316. FIG. 5A illustrates two separate channel cuts 326 in the heel portion 330 of the insole 310. A laser-cut channel 336 is situated optionally in the medial arch portion 340 of the insole 310 and runs curvilinearly and longitudinally with respect to the insole 310. As discussed with respect to the embodiment shown in FIGS. 4A and 4B, the insole 310 may include one or more channels 316 in the toe portion 320, one or more channels 326 in the heel portion 330, and/or one or more channels 336 in the medial arch portion 340 of the insole 310.
However, in contrast to the embodiment shown in FIGS. 4A and 4B, the insole 310 includes punctuations 317 in the bottom gel layer 360. These punctuations may be produced by a die (not shown). As illustrated in FIG. 5C, the punctuations may extend completely through the bottom layer 360 and run along the channels 316, 326, 336. Alternatively, as illustrated in FIG. 5D, the punctuations 317 may extend substantially into but not completely through the bottom layer 360 and run along the channels 316, 326, 336. In addition, as shown in FIG. 5A, the punctuations 317 are separated from one another in the direction of the channels 316, 326, 336 by web elements 318. A spacing of the punctuations 317, and thus a thickness of the web elements 318, may be adjusted such that a user of the insole 310 may tear the insole 310 cleanly and easily along the channels 316, 326, 336, while, at the same time, the insole 310 does not bend or wrinkle along any intact channel in the insole 310 when the insole 310 is slipped into an article of footwear. The punctuations 317 and web elements 318 may be formed of a variety of patterns including, but not limited to, circular, square, rectangular, polygonal, and other shapes, and combinations thereof.
Further, punctuations as described in the present invention include patterns that may otherwise be referred to as perforations, serrations, cuts, punctures, notches, holes, slots, etc., some of which are illustrated in FIG. 5A.
FIG. 6 is a flow chart of a method for manufacturing a multilayer laminate footwear insole, according to a non-limiting embodiment of the present invention.
The method begins at step 400. In step 410, a laminated footwear insole is assembled.
The insole has at least a top layer and a bottom layer. The top layer may include one or more layers of fabric or film, and the bottom layer may include one or more layers of foam or gel. In step 420, a channel is cut into the top layer of the insole, e.g., by a laser cutter. The channel corresponds to human foot sizes and extends through the top layer and may extend partially into the bottom layer. In step 430, a query is made as to whether another channel is to be cut into the top layer of the insole, e.g., by a laser cutter. If yes, then the method repeats step 420. If no, then in method step 440, a query is made as to whether the bottom layer should be punctuated in the channels. If no, then the method ends at step 460. If yes, then the bottom layer is punctuated in the channel(s) in step 450. The method then ends at step 460.
FIG. 7 is a flow chart of a method for reducing a dimension of a multilayer laminate footwear insole, according to a non-limiting embodiment of the present invention. The method begins at step 500. In step 510, a query is made as to whether a toe region of the insole has a channel corresponding to a desired foot size.
If no, then the method advances to step 530. If yes, in step 520, the insole is then torn by hand along the above-mentioned channel in the toe region, after which the method advances to step 530. In step 530, a query is made as to whether a heel region of the insole has a channel corresponding to the desired foot size. If no, then the method advances to step 550. If yes, in step 540, the insole is then torn by hand along the above-mentioned channel in the heel region, after which the method advances to step 550. In step 550, a query is made as to whether a medial arch region of the insole has a channel corresponding to the desired foot size. If no, then the method ends at step 570. If yes, then, in step 560, the insole is torn by hand along the above-mentioned channel in the medial arch region. The method then ends at step 570.
Alternatively, query 510 and step 520, query 530 and step 540, and query 550 and step 560 may be re-ordered, as desired by a consumer.
In a preferred non-limiting embodiment of the present invention, a multilayer laminate footwear insole having a top layer having a top surface and a bottom layer having a bottom surface, the bottom layer including at least one cushioning layer, comprises a channel in the insole, wherein the channel transects the top layer of the insole, and one or more punctuations in the channel, wherein the punctuation transects the bottom layer of the insole. The multilayer laminate footwear insole may be a single one-size-fits-all insole, which may be adjusted to various sizes according to predetermined punctuated channels. Each channel may have a preferred punctuation within the channel. In addition, consumers may tear along each predetermined punctuated channel by hand in order to adjust the insole size to fit within shoes.
The foregoing description discloses only non-limiting embodiments of the present invention. Modification of the above-disclosed multilayer laminate footwear insole, as well as methods for making and using the same, which fall within the scope of the invention, will be readily apparent to those of ordinary skill in the art.
Accordingly, while the present invention has been disclosed. in connection with the above non-limiting embodiments, it should be understood that other embodiments may fall within the spirit and scope of the invention, as defined by the following claims.
In yet another non-limiting embodiment of the present invention, a method of reducing a dimension of a multilayer laminate footwear insole for altering a size of an insole having a predetermined punctuated channel, comprises the step of tearing the insole by hand along the predetermined punctuated channel.
Other features and aspects of the present invention will become more fully apparent from the following brief description of the drawings, the detailed description of the non-limiting embodiments, the appended claims and the accompanying drawings.
Brief Description of the Drawings FIG. 1 is a schematic plan view of an embodiment of an exemplary footwear insole.
FIG. 2 is a schematic cross-sectional view, along line A-A', of the embodiment of the exemplary footwear insole of FIG. 1.
FIG. 3A is a schematic view of a laser cutter cutting a channel into a footwear insole, according to a non-limiting embodiment of the present invention.
FIG. 3B is a schematic cross-sectional view of the embodiment of a footwear insole of FIG. 3A, having a channel produced by the laser cutter of FIG. 3A.
FIG. 3C is a detail of the schematic cross-sectional view shown in FIG. 3B.
FIG. 3D is a schematic cross-sectional view of an alternative, non-limiting embodiment of the present invention of a footwear insole of FIG. 3A, having a channel produced by the laser cutter of FIG. 3A, partially transecting the top layer.
FIG. 3E is a detail of the schematic cross-sectional view shown in FIG. 3D.
FIG. 4A is a schematic plan view of a footwear insole, according to a non-limiting embodiment of the present invention having a plurality of channels.
-FIG. 4B is a schematic cross-sectional view, along line B-B', of the non-limiting embodiment of a footwear insole of FIG. 4A, completely transecting the top layer.
FIG. 5A is a schematic plan view of a footwear insole, according to another non-limiting embodiment of the present invention, illustrated with six channels that traverse the top layer.
FIG. 5B is a schematic cross-sectional view, along line D-D', of the non-limiting embodiment of a footwear insole of FIG. 5A.
FIG. 5C is a schematic cross-sectional view, along line C-C', of the non-limiting embodiment of a footwear insole of FIG. 5A.
FIG. 5D is an alternative, schematic cross-sectional view along line C-C', of the non-limiting embodiment of a footwear insole of FIG. 5A, wherein the punctuation does not transect the bottom surface of the bottom layer.
FIG. 6 is a flow chart of a method for manufacturing a multilayer laminate footwear insole, according to a non-limiting embodiment of the present invention.
FIG. 7 is a flow chart of a method for reducing a dimension of a multilayer laminate footwear insole, according to a non-limiting embodiment of the present invention.
Detailed Description of the Embodiments A need has been recognized for a footwear insole, whose size may be adjusted by consumers without mechanical cutting instruments such as scissors, even when the insole includes a layer or layers of high-strength fabric and/or high-strength and/or elastic cushioning materials.
FIG. 1 is a schematic plan view, and FIG. 2 a schematic cross-sectional view along line A-A', of a non-limiting embodiment of an exemplary footwear insole 10.
The footwear insole 10 includes a toe portion 20, a heel portion 30 and a medial arch portion 40 interconnecting the toe and heel portions 20, 30. The insole may also include a top layer 50 and a bottom layer 60 affixed to the top layer 50. The top layer 50 may include one or more fabric layers, and the bottom layer 60 may include one or more cushioning layers, such as foam layers and gel layers. However, the top layer 50 may also include foam and/or gel layers. For the sake of simplicity, though, the embodiments discussed in the following will include a top layer 50 made of a layer of fabric and a bottom layer 60 made of a layer of foam or gel. The fabric layer 50 may include at least one polymer or natural fiber such as polyester, acetate, polyethene, acrylic, nylon, rayon, spandex, wool, cotton, silk, bamboo, linen, hemp, urethane, or any material that can be ablated by a laser. In addition, fabric layer 50 may include at least one film, such as polyethylene, polyurethane, or any other material that can be ablated by a laser. Any foam layer used as the bottom layer 60 may include at least one of polyurethane, ethylene vinyl acetate copolymer, styrene-ethylene-butadiene-styrene or other suitable materials for cushioning. Any gel layer used as the bottom layer 60 may include at least one of polyurethane, styrene-ethylene-butadiene-styrene, silicone, hydrogel or other suitable materials for cushioning. The footwear insole 10 may take any of a variety of shapes in order to fit within a variety of shoes.
Also, the footwear insole 10 may have any of a variety of contoured, flat, curved, or other surfaces in order to fit within a variety of shoes. Further, the tear strength of the top layer may be greater than the tear strength of the bottom layer.
FIG. 3A is a schematic view of a laser cutter cutting a channel into a footwear insole 110, according to an embodiment of the present invention. The laser cutter 112 focuses a laser beam 114 onto the footwear insole 110 (shown in cross-section) and is moved across a surface of the footwear insole 110 so as to cut a depression or channel 116 into the footwear insole 110. The laser cutter can cut channels of varying width and depth. An example of a laser cutter used to cut the channel 116 is an Epilog Mini 24, 35 Watt laser, manufactured by Epilog Laser of Golden, Colorado. FIG. 3B
is a schematic cross-sectional view of the non-limiting embodiment of the footwear insole 110 of FIG. 3A, having a channel produced by the laser cutter of FIG. 3A, and FIG.
3C is a detail of the schematic cross-sectional view shown in FIG. 3B, indicated by a dashed circle 118. As illustrated in FIGS. 3B and 3C, the channel 116 may be cut completely through a top fabric layer 150 of the footwear insole 110. In addition, the channel 116 may extend partially into a bottom foam or gel layer 160.
Examples of settings on the Epilog Mini 24 laser that allowed the laser to burn through essentially only the fabric layer 150 of an exemplary polyester knit lamination were 100% speed, 50% power, 400 DPI (dots per inch) and 500 Hz.
This exemplary polyester knit lamination was comprised of a polyester knit fabric bonded to a urethane film using a hot melt urethane adhesive, in which the fabric laminate was molded to urethane foam using an open cast urethane molding technique. For different materials that may make up the fabric layer, a person having ordinary skill in the art would be able to modify the settings of the laser depending upon the different material properties of the fabric layer, such as thickness, density, moisture content, and other properties. For example, for a thicker fabric layer, a person having ordinary skill in the art would be able to adjust the various settings, such as power, of the laser in order to cut through the fabric layer.
FIG. 3D is an alternative schematic cross-sectional view of a non-limiting embodiment of a footwear insole 110, having a channel produced by the laser cutter of FIG. 3A, and FIG. 3E is a detail of the alternative schematic cross-sectional view shown in FIG. 3D, indicated by a dashed circle 119. As illustrated in FIGS. 3D
and 3E, the channel 116 may be cut substantially into the top fabric layer 150 of the footwear insole 110, such that the channel 116 does not extend into a bottom foam or gel layer 160. Further, the channel may be cut to other various depths (not illustrated) ranging from only partially cutting into a top fabric layer 150 to both completely cutting through a top fabric layer 150 and substantially cutting into a bottom foam or gel layer 160 of the footwear insole 110. In each of these non-limiting embodiments, a clean and neat tear line results when a consumer tears along the predetermined channel.
FIG. 4A is a schematic plan view of a footwear insole 210, according to a non-limiting embodiment of the present invention, and FIG. 4B is a schematic cross-sectional view, along line B-B', of the embodiment of a footwear insole 210 of FIG.
4A. The footwear insole 210 includes a toe portion 220, a heel portion 230 and a medial arch portion 240 interconnecting the toe and heel portions 220, 230.
The insole 210 includes a top layer 250 of fabric and a bottom layer 260 of cushioning material affixed to the top layer 250. However, the top layer 250 may also include multiple fabric layers, and the bottom layer 260 may include multiple cushioning material layers. A channel 216 cut by the laser cutter 112 is situated in the toe portion 220 of the insole 210. FIG. 4A illustrates three separate channel cuts 216 in the toe portion 220 of the insole 210. The channel 216 extends laterally and curvilinearly across the top surface of the insole 210 and is configured to correspond to a possible shoe size of a user. In addition, as illustrated in FIG. 4B, the channel 216 may extend approximately perpendicularly through the top layer 250 and partially into the bottom layer 260. Optionally, a channel 226 cut by the laser cutter 112 is situated in the heel portion 230 of the insole 210. FIG. 4A illustrates separate channel cuts 226 in the heel portion 230 of the insole 210. The channel 226 extends laterally and curvilinearly across the top surface of the insole 210 with a direction of curvature opposite to a direction of curvature of channel 216. A channel 236 cut by the laser cutter 112 is situated in the medial arch portion 240 of the insole 210 and extends curvilinearly and longitudinally with respect to the insole 210. The insole 210 may include one or more channels 216 in the toe portion 220, one or more channels 226 in the heel portion 230, and/or one or more channels 236 in the medial arch portion 240.
Furthermore, with respect to channels 216, 226, 236, cutting the channels 216, 226, 236 with the laser cutter 112 advantageously produces a clean cut line in the fabric layer 250. In addition, if the fabric layer 250 includes a polymer fabric, the laser beam 114 cauterizes the fabric layer 250, thereby preventing the fabric from fraying at the cut line.
Further with respect to FIGS. 4A and 4B, the bottom foam layer 260 may have a relatively low tear strength, e.g., less than 10 lbsf, for the user to tear the insole 210 cleanly and easily along the channels 216, 226, 236. However, the bottom foam layer 260 may also have a sufficiently high modulus of elasticity, or flexural modulus, in order to ensure that the insole 210 does not permanently bend or wrinkle along the channels 216, 226, 236 when slipped into an article of footwear.
FIG. 5A is a schematic plan view of a footwear insole 310, according to another non-limiting embodiment of the present invention. FIG. 5B is a schematic cross-sectional view of the non-limiting embodiment of a footwear insole 310 of FIG.
5A along line D-D'. FIGS. 5C and 5D are alternative, schematic cross-sectional views of the non-limiting embodiment of a footwear insole 310 of FIG. 5A along line C-C'. As in the embodiment shown in FIG. 4A, the footwear insole 310 includes a toe portion 320, a heel portion 330 and a medial arch portion 340 interconnecting the toe and heel portions 320, 330. In addition, the footwear insole 310 includes a top layer 350 of fabric and a bottom layer 360 made of a cushioning material. The insole 310 further includes a laser-cut channel 316, which is situated in the toe portion 320 of the insole 310 and runs laterally and curvilinearly across the top surface of the insole 310. As illustrated in FIG. 513, the channel 316 may extend through the top layer 350 and partially into the bottom layer 360. FIG. 5A illustrates three separate channel cuts 316 in the toe portion 320 of the insole 310. In addition, the insole 310 may further include a laser-cut channel 326, which is situated in the heel portion 330 of the insole 310 and runs laterally and curvilinearly across the top surface of the insole 310 with a direction of curvature opposite to a direction of curvature of channel 316. FIG. 5A illustrates two separate channel cuts 326 in the heel portion 330 of the insole 310. A laser-cut channel 336 is situated optionally in the medial arch portion 340 of the insole 310 and runs curvilinearly and longitudinally with respect to the insole 310. As discussed with respect to the embodiment shown in FIGS. 4A and 4B, the insole 310 may include one or more channels 316 in the toe portion 320, one or more channels 326 in the heel portion 330, and/or one or more channels 336 in the medial arch portion 340 of the insole 310.
However, in contrast to the embodiment shown in FIGS. 4A and 4B, the insole 310 includes punctuations 317 in the bottom gel layer 360. These punctuations may be produced by a die (not shown). As illustrated in FIG. 5C, the punctuations may extend completely through the bottom layer 360 and run along the channels 316, 326, 336. Alternatively, as illustrated in FIG. 5D, the punctuations 317 may extend substantially into but not completely through the bottom layer 360 and run along the channels 316, 326, 336. In addition, as shown in FIG. 5A, the punctuations 317 are separated from one another in the direction of the channels 316, 326, 336 by web elements 318. A spacing of the punctuations 317, and thus a thickness of the web elements 318, may be adjusted such that a user of the insole 310 may tear the insole 310 cleanly and easily along the channels 316, 326, 336, while, at the same time, the insole 310 does not bend or wrinkle along any intact channel in the insole 310 when the insole 310 is slipped into an article of footwear. The punctuations 317 and web elements 318 may be formed of a variety of patterns including, but not limited to, circular, square, rectangular, polygonal, and other shapes, and combinations thereof.
Further, punctuations as described in the present invention include patterns that may otherwise be referred to as perforations, serrations, cuts, punctures, notches, holes, slots, etc., some of which are illustrated in FIG. 5A.
FIG. 6 is a flow chart of a method for manufacturing a multilayer laminate footwear insole, according to a non-limiting embodiment of the present invention.
The method begins at step 400. In step 410, a laminated footwear insole is assembled.
The insole has at least a top layer and a bottom layer. The top layer may include one or more layers of fabric or film, and the bottom layer may include one or more layers of foam or gel. In step 420, a channel is cut into the top layer of the insole, e.g., by a laser cutter. The channel corresponds to human foot sizes and extends through the top layer and may extend partially into the bottom layer. In step 430, a query is made as to whether another channel is to be cut into the top layer of the insole, e.g., by a laser cutter. If yes, then the method repeats step 420. If no, then in method step 440, a query is made as to whether the bottom layer should be punctuated in the channels. If no, then the method ends at step 460. If yes, then the bottom layer is punctuated in the channel(s) in step 450. The method then ends at step 460.
FIG. 7 is a flow chart of a method for reducing a dimension of a multilayer laminate footwear insole, according to a non-limiting embodiment of the present invention. The method begins at step 500. In step 510, a query is made as to whether a toe region of the insole has a channel corresponding to a desired foot size.
If no, then the method advances to step 530. If yes, in step 520, the insole is then torn by hand along the above-mentioned channel in the toe region, after which the method advances to step 530. In step 530, a query is made as to whether a heel region of the insole has a channel corresponding to the desired foot size. If no, then the method advances to step 550. If yes, in step 540, the insole is then torn by hand along the above-mentioned channel in the heel region, after which the method advances to step 550. In step 550, a query is made as to whether a medial arch region of the insole has a channel corresponding to the desired foot size. If no, then the method ends at step 570. If yes, then, in step 560, the insole is torn by hand along the above-mentioned channel in the medial arch region. The method then ends at step 570.
Alternatively, query 510 and step 520, query 530 and step 540, and query 550 and step 560 may be re-ordered, as desired by a consumer.
In a preferred non-limiting embodiment of the present invention, a multilayer laminate footwear insole having a top layer having a top surface and a bottom layer having a bottom surface, the bottom layer including at least one cushioning layer, comprises a channel in the insole, wherein the channel transects the top layer of the insole, and one or more punctuations in the channel, wherein the punctuation transects the bottom layer of the insole. The multilayer laminate footwear insole may be a single one-size-fits-all insole, which may be adjusted to various sizes according to predetermined punctuated channels. Each channel may have a preferred punctuation within the channel. In addition, consumers may tear along each predetermined punctuated channel by hand in order to adjust the insole size to fit within shoes.
The foregoing description discloses only non-limiting embodiments of the present invention. Modification of the above-disclosed multilayer laminate footwear insole, as well as methods for making and using the same, which fall within the scope of the invention, will be readily apparent to those of ordinary skill in the art.
Accordingly, while the present invention has been disclosed. in connection with the above non-limiting embodiments, it should be understood that other embodiments may fall within the spirit and scope of the invention, as defined by the following claims.
Claims (19)
1) A multilayer laminate footwear insole having a top layer having a top surface and a bottom layer having a bottom surface, the bottom layer including at least one cushioning layer, the insole comprising:
a channel in the insole, wherein the channel transects the top layer of the insole; and one or more punctuations in the channel, wherein the punctuation transects the bottom layer of the insole.
a channel in the insole, wherein the channel transects the top layer of the insole; and one or more punctuations in the channel, wherein the punctuation transects the bottom layer of the insole.
2) The multilayer laminate footwear insole of claim 1, wherein the channel completely transects the top layer.
3) The multilayer laminate footwear insole of claim 1, wherein the punctuation transects the bottom surface of the bottom layer.
4) The multilayer laminate footwear insole of claim 1, wherein the channel penetrates at least part of the bottom layer.
5) The multilayer laminate footwear insole of claim 1, wherein the channel traverses the top surface of the top layer from opposing edges of the insole.
6) The multilayer laminate footwear insole of claim 1, wherein the at least one cushioning layer is a foam layer.
7) The multilayer laminate footwear insole of claim 6, wherein the foam layer comprises at least one of polyurethane, ethylene vinyl acetate copolymer and styrene-ethylene-butadiene-styrene.
8) The multilayer laminate footwear insole of claim 1, wherein the at least one cushioning layer is a gel layer.
9) The multilayer laminate footwear insole of claim 8, wherein the gel layer comprises at least one of polyurethane, styrene-ethylene-butadiene-styrene, silicone and hydrogel.
10) The multilayer laminate footwear insole of claim 1, wherein the top layer includes at least one of a fabric or film layer.
11) The multilayer laminate footwear insole of claim 10, wherein the at least one of a fabric or film layer comprises at least one of a polymer or natural fiber.
12) The multilayer laminate footwear insole of claim 1, wherein the channel is laser cut.
13) The multilayer laminate footwear insole of claim 1, wherein the punctuation is made in predetermined patterns.
14) A method for manufacturing a multilayer laminate footwear insole having a top layer with a top surface and a bottom layer with a bottom surface, the bottom layer including at least one cushioning layer, the method comprising the steps of:
cutting a channel in the top surface of the top layer of the insole, wherein the channel transects the top layer of the insole; and punctuating the bottom layer in the channel.
cutting a channel in the top surface of the top layer of the insole, wherein the channel transects the top layer of the insole; and punctuating the bottom layer in the channel.
15) The method of claim 14, wherein the punctuation transects the bottom surface of the bottom layer of the insole.
16) The method of claim 14, wherein the cutting includes cutting two or more channels.
17) The method of claim 14, wherein the top layer is partially transected by the channel.
18) The method of claim 14, wherein the channel is cut using a laser.
19) A method of reducing a dimension of a multilayer laminate footwear insole for altering a size of the insole having a predetermined punctuated channel, the method comprising the steps of:
tearing the insole by hand along the predetermined punctuated channel.
tearing the insole by hand along the predetermined punctuated channel.
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| PCT/US2009/059186 WO2010039929A1 (en) | 2008-10-03 | 2009-10-01 | Multilayer laminate footwear insole |
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- 2009-10-01 CA CA2737919A patent/CA2737919A1/en not_active Abandoned
- 2009-10-01 AU AU2009298485A patent/AU2009298485A1/en not_active Abandoned
- 2009-10-01 WO PCT/US2009/059186 patent/WO2010039929A1/en not_active Ceased
- 2009-10-01 MX MX2011003561A patent/MX2011003561A/en not_active Application Discontinuation
- 2009-10-01 CN CN200980139012XA patent/CN102170802A/en active Pending
-
2011
- 2011-04-04 CO CO11041376A patent/CO6361868A2/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| EP2339935A1 (en) | 2011-07-06 |
| BRPI0920685A2 (en) | 2015-12-29 |
| WO2010039929A1 (en) | 2010-04-08 |
| AU2009298485A1 (en) | 2010-04-08 |
| US20100083534A1 (en) | 2010-04-08 |
| CN102170802A (en) | 2011-08-31 |
| CO6361868A2 (en) | 2012-01-20 |
| MX2011003561A (en) | 2011-05-02 |
| JP2012513777A (en) | 2012-06-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |
Effective date: 20131001 |