Insole

Abstract

The present invention relates to a insole which is mainly made by the following process: reeling off single thread filament from recycled materials such as PET bottle, PET plastic material, waste fabric, recycled yarn into fiber; intermingling plastic fiber with the above fiber of recycled material and then conducting needle punching to form air-permeable thick layer of nonwoven fabric having 3-10 mm thickness; adhering nonwoven fabric or cover layer made by general fabric onto the air-permeable thick layer of non-woven fabric; conducting heat forming and cutting into suitable size. In this manner, not only the insole made by recycled material possesses environment protection feature but also the air-permeable thick layer of nonwoven fabric, which is needle punched from fiber, has excellent air permeability and appropriate elastic effect. Therefore, users have snug feeling achieved by good air permeability and shock absorption so that it has better performance in its total application.

Description

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to an insole, particularly to an insole having environment protection feature, excellent air permeability and appropriate elastic effect, which is made from recycled materials such as PET bottle, PET plastic material, waste fabric, recycled yarn. Therefore, users have snug feeling achieved by good air permeability and shock absorption so that it can provide better performance in its total application.

2. Brief Description of the Prior Art

People often wear shoes for safety and clean reasons so as to protect foot from abrasion or piercing by pebble or foreign object when walking on rough or hard ground and to keep clean with hygiene at foot. Shoes has been evolved from straw sandals, clogs etc. at early stage to shoes nowadays made by a variety of materials such as cloth shoes, leather shoes. As to the style and color, a variety of beautiful, magnificent and specialized shoes have been developed under endless pursuit of novelty and originality by the industries.

In order to improve wearing snugness, most of shoes sold on the market often incorporate extra insoles inside the shoes. The insoles is formed as a foamed material firstly by conducting foam-molding on a resin which is incorporated with foam material, then the foamed material is cut to form insoles with suitable size matching with the shape of shoes. The thenar of foot has more flexible feeling of snugness when user wears shoes having above insoles made from the foamed material and provided inside the shoes.

The above insole can achieve expected effectiveness of much more snugness when users wear shoes with the insole, but it is found in practical application that the insole, formed by conducting foam-molding on a resin incorporated with a foam material, usually has poor air permeability. Users often feel muggy when wearing these insoles. Furthermore, this insole made by foam material has no environment protection feature. Thus, this insole still has got space for improvement.

In view of the above facts, inventor of the present invention provides a new insole according to the improvement conducted on defects of the existing structure based on his abundant experience of R&D and manufacturing in relevant field so as to attain better performance in practical application.

SUMMARY OF THE INVENTION

The insole of the present invention is mainly made by the following process: reeling off single thread filament from recycled materials such as PET bottle, PET plastic material, waste fabric, yarn into fiber; intermingling plastic fiber with the above reeled-off fiber and then conducting needle punching to form air-permeable thick layer of nonwoven fabric having 3-10 mm thickness; adhering nonwoven fabric or cover layer made by general fabric on the air-permeable thick layer of non-woven fabric; conducting heat forming and cutting into suitable for ready use. In this manner, not only the insole made by recycled material possesses environment protection feature but also the air-permeable thick layer of nonwoven fabric needle-punched from fiber has excellent air permeability. Therefore, users have snug feeling achieved by good air permeability and shock absorption so that it has better performance in its total application.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective exploded view showing the insole of the present invention.

FIG. 2 is a schematic view showing the molded insole of the present invention.

FIG. 3 is a partial enlarged sectional schematic view showing the insole of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

The objects, the technical contents and the expected effectiveness of the present invention will become more apparent from the detailed description of the preferred embodiment in conjunction with the accompanying drawings.

Firstly referring to FIG. 1 showing a perspective exploded view of the insole of the present invention, the insole is formed by a cover layer (1) adhered onto an air-permeable thick layer of nonwoven fabric (2).

The cover layer (1) can be formed by nonwoven fabric or general fabric.

The air-permeable thick layer of nonwoven fabric (2) is formed by firstly reeling off single thread filament from recycled materials such as PET bottle, PET plastic material, waste fabric, or recycled yarn into fiber, then by intermingling plastic fiber with the above fiber of recycled material, and then conducting needle punching. The air-permeable thick layer of nonwoven fabric (2) has a thickness of approximately 3-10 mm.

In this manner, please refer to FIG. 2 and FIG. 3, after the cover layer (1) is adhered onto the air-permeable thick layer (2) of nonwoven fabric, heat forming process and subsequently cutting process is conducted to form insole of suitable size for ready use. Heat forming can be conducted on the insole according to specific profile of foot, or high flexibility forming within the range of 100-150° C. can be conducted on the insole according to specific flexibility.

The abovementioned embodiments and drawings are not used to limit of the scope of the present invention. Equivalent variations and modifications made by the person skilled in the art without departing from the spirit and scope of the present invention are still considered to be within the scope of the present invention.

Based on the foregoing, the insole of the present invention has the following advantages when comparing with the structure of conventional insole.

• 1. The insole of the present invention is mainly made by the following process: reeling off single thread filament from recycled materials such as PET bottle, PET plastic material, waste fabric, or recycled yarn into fiber; intermingling plastic fiber with the above fiber of recycled material and then conducting needle punching to form air-permeable thick layer of nonwoven fabric having 3-10 mm thickness; adhering nonwoven fabric or cover layer made by general fabric onto the air-permeable thick layer of nonwoven fabric; conducting heat forming and cutting into suitable size. In this manner, not only the insole made by recycled material possesses environment protection feature but also the air-permeable thick layer of nonwoven fabric, which is needle punched from fiber, has excellent air permeability and appropriate elastic effect. Therefore, users have snug feeling achieved by good air permeability and shock absorption so that it has better performance in its total application.
• 2. The insole of the present invention is made by reeling off single thread filament from recycled materials such as PET bottle, PET plastic material, waste fabric, or recycled yarn into fiber and then by molding, waste can be reduced, the garbage amount burned in the garbage furnish can be decreased, and the service life of garbage landfill can be extended. Therefore, product becomes more valuable and meaningful by using recycled resources.
• 3. The insole of the present invention is mainly made by reeling off single thread filament from recycled materials such as PET bottle, PET plastic material, waste fabric, or recycled yarn into fiber, and then by intermingling plastic fiber with the above fiber of recycled material. Multilayer of air-permeable space are formed by the intermingling between the fiber of recycled material and the plastic fiber so that better air permeable feature and appropriate elasticity can be obtained.

Summing up above, the insole of this invention can reach expected effectiveness, and the specific configurations disclosed herein have yet not seen in the prior art of the same category of product, even has not been opened to the public before application.

Claims

1. An insole, wherein said insole is formed by adhering a cover layer onto an air-permeable thick layer of nonwoven fabric which is formed by reeling off single thread filament from recycled materials and by intermingling the fiber of recycled materials with plastic fiber and then by needle punching.

2. An insole as claimed in claim 1, wherein said cover layer is nonwoven fabric.

3. An insole as claimed in claim 1, wherein said cover layer is general fabric.

4. An insole as claimed in claim 1, wherein said air-permeable thick layer of nonwoven fabric has a thickness of 3-10 mm.

5. An insole as claimed in claim 1, wherein the recycled material of said air-permeable thick layer of nonwoven fabric is PET bottle.

6. An insole as claimed in claim 1, wherein the recycled material of said air-permeable thick layer of nonwoven fabric is PET plastic material.

7. An insole as claimed in claim 1, wherein the recycled material of said air-permeable thick layer of nonwoven fabric is waste fabric.

8. An insole as claimed in claim 1, wherein the recycled material of said air-permeable thick layer of nonwoven fabric is recycled yarn.

9. An insole as claimed in claim 1, wherein heat forming is conducted on said insole according to specific profile of foot.

10. An insole as claimed in claim 1, wherein high flexibility forming within the range of 100-150° C. can be conducted on the insole according to specific flexibility.