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  Method of making insole and insole made therebyUSPTO Application #: 20060000115Title: Method of making insole and insole made thereby Abstract: A method of making an insole includes the steps of (a) providing a base sheet material having through holes, (b) immersing the base sheet material in a filling material for enabling the filling material to fill up the through holes, (c) baking the base sheet material to cure the filling material, (d) splitting the base sheet material to a desired thickness, (e) bonding a fabric layer to one side of the base sheet material, (f) cutting the base sheet material into semi-finished insole, (g) stamping the semi-finished insole into a finished insole where the filling material protrudes over the top and bottom sides of the base sheet material, and the fabric layer has raised portions supported on the protruded filling material corresponding to the through holes. (end of abstract) Agent: Browdy And Neimark, P.l.l.c. 624 Ninth Street, Nw - Washington, DC, US Inventor: Heng-Tai Chang USPTO Applicaton #: 20060000115 - Class: 036044000 (USPTO) Related Patent Categories: Boots, Shoes, And Leggings, Insoles, Laminated The Patent Description & Claims data below is from USPTO Patent Application 20060000115. Brief Patent Description - Full Patent Description - Patent Application Claims
BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a method of making an insole for shoes and more specifically, to the method of making an insole for shoe that has raised portions on the surface. [0003] 2. Description of the Related Art [0004] An insole provides an elastic support to the sole of the user, enabling the user to walk comfortably. In order to enhance the elastic power and ventilation effect of an insole, the insole is made having raised portions protruding over the top surface. When the user pressed the sole on the raised portions of the insole, gaps are left in between the user's sole and the top surface of the insole for ventilation. An insole having raised portions may be molded from polymeric compound, foam material, rubber or the like. The mold has recessed portions in the cavity for forming raised portions on the surface of the insole. Usually, the insole molded integrally by this way has a bottom surface with recessed portions at areas corresponding to the raised portions of the top surface. When the insole is compressed, the raised portions tend to deform permanently after a long time of use of the insole, thereby reducing its elastic material property and ventilation effect. SUMMARY OF THE INVENTION [0005] It is the primary objective of the present invention to provide a method of making an insole, which is practical to make insoles that maintains a high elastic power and provides a satisfactory ventilation effect after a long time of use. [0006] To achieve this objective of the present invention, the method of making an insole provided by the present invention comprises the steps of (a) providing a base sheet material made of a first compound, the base sheet material having a plurality of through holes through top and bottom sides thereof; (b) immersing the base sheet material in a fluid filling material prepared from a second compound to let the filling material fill up the through holes; (c) baking the base sheet material in a baking oven to cure the filling material; (d) splitting the base sheet material subject to a desired thickness; (e) bonding a fabric layer to a top surface of the base sheet material; (f) cutting the fabric layer bonded base sheet material thus obtained into a semi-finished insole with a predetermined shape; and (g) stamping the semi-finished insole to compact the base sheet material, for enabling the filling material to protrude over the top surface and a bottom surface of the base sheet material, thereby forming a plurality of raised portions at the fabric layer. BRIEF DESCRIPTION OF THE DRAWINGS [0007] FIG. 1 is a flow chart according to a method of making an insole of the present invention. [0008] FIG. 2 is a perspective view of a base material for insole according to the present invention. [0009] FIG. 3 is a schematic drawing showing the filling material immersion procedure according to the present invention. [0010] FIG. 4 is a sectional elevation of the base sheet material after filling material immersion according to the present invention. [0011] FIG. 5 is a perspective view of the base sheet material after material splitting according to the present invention. [0012] FIG. 6 is a perspective view of the base sheet material after fabric bonding according to the present invention. [0013] FIG. 7 is a perspective view of a semi-finished insole obtained after cutting and baking procedure according to the present invention. [0014] FIG. 8 is a perspective view of a finished insole made according to the present invention. [0015] FIG. 9 is a sectional view in an enlarged scale of a part of the finished insole shown in FIG. 8. DETAILED DESCRIPTION OF THE INVENTION [0016] Referring to FIG. 1, a method of making an insole in accordance with the present invention includes the steps of (a) material preparation, (b) filling material immersion, (c) baking, (d) material splitting, (e) fabric bonding, (f) cutting and baking, and (g) stamping. [0017] Referring to FIG. 2, a base sheet material 10 is provided during step (a) material preparation. The base sheet material 10 is molded from a polymeric compound, for example, EVA (Ethylene Vinyl Acetate), having a plurality of circular through holes 12 through the top and bottom sides thereof. [0018] Referring to FIGS. 3 and 4, after step (a) material preparation, it proceeds to step (b) filling material immersion where the base sheet material 10 is immersed in a fluid filling material 14, enabling the filling material 14 to fill in the through holes 12. The filling material 14 is a different polymeric compound. According to this embodiment, the filling material 14 is latex. The filling material 14 is filled in the bottom die 16 of a mold 20 at first, and then the base sheet material 10 is put in the filling material 14 inside the bottom die 16, and then a press 22 is operated to close the upper die 18 of the mold 20 on the bottom die 16. When closing the upper die 18 on the bottom die 16, the filling material 14 is forced to fill up the through holes 12 and to move over the top and bottom sides of the base sheet material 10, and at the same time the base sheet material 10 is flattened. The flattened base sheet material 10 is kept in the mold 20 for several minutes to let the filling material 14 be hardened and fixedly positioned in the through holes 12. [0019] Thereafter, it proceeds to step (c) baking where the base sheet material 10 is removed from the mold 20 and then put in a baking oven and baked to cure the filling material 14. [0020] After step (c) baking, it proceeds to step (d) material splitting where the top and bottom layers are removed from the base sheet material 10 by splitting, thereby exposing the filling material 14 to the top and bottom side as shown in FIG. 5. Continue reading... Full patent description for Method of making insole and insole made thereby Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Method of making insole and insole made thereby patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. Start now! - Receive info on patent apps like Method of making insole and insole made thereby or other areas of interest. ### Previous Patent Application: Heel balancing insole Next Patent Application: Article of footwear and lacing system therefor Industry Class: Boots, shoes, and leggings ### FreshPatents.com Support Thank you for viewing the Method of making insole and insole made thereby patent info. IP-related news and info Results in 0.43495 seconds Other interesting Feshpatents.com categories: Accenture , Agouron Pharmaceuticals , Amgen , AT&T , Bausch & Lomb , Callaway Golf |
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