US20110072686A1 - Non-peelabel insole and manufacturing method - Google Patents
Non-peelabel insole and manufacturing method Download PDFInfo
- Publication number
- US20110072686A1 US20110072686A1 US12/924,121 US92412110A US2011072686A1 US 20110072686 A1 US20110072686 A1 US 20110072686A1 US 92412110 A US92412110 A US 92412110A US 2011072686 A1 US2011072686 A1 US 2011072686A1
- Authority
- US
- United States
- Prior art keywords
- layer
- insole
- recited
- peelable
- mold
- 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
- 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
- A43B17/00—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined
- A43B17/02—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined wedge-like or resilient
Definitions
- the present invention relates to an insole of a shoe, and more particularly to a non-peelable insole, wherein the non-peelable insole has a first layer integrally and continuously formed with a second layer, such that the first and second layer are firmly attached with each other to form the non-peelable insole.
- the shoes have an insole, which normally has an upper layer and a lower layer attached to the upper layer by glue, and the lower layer may be provided as a cushion layer for enhancing the comfortableness when the user is wearing the shoe, while the upper layer may provide a smoothie surface for being directly contacted with the user's feet, so as to provide different designed graphics thereon within the shoe cavity for replacing on the bottom shoe sole.
- the China Patent application which has an application number of 200410026765, has published a process of making the shoe insole.
- This invention disclosed the upper layer of the shoe insole is made by forming a center piece of the upper layer and disposing the center piece in a center portion of a cavity of the mold.
- the injection material which is PU material
- the injection material is injected into the cavity of the mold such that the injection material is outwardly extended from the center piece and is formed at the outer peripheral portion of the upper layer.
- the center piece of the upper layer is made of EVA material treated with foaming process and precut into a predetermined shape.
- the center piece can be flattened and precut into the predetermined shape.
- the insoles are made by a process comprises the steps of providing a sheet of the first layer, such as PU layer (polyurethane), and a sheet of the second layer, such as PVC layer (polyvinyl chloride), cutting the sheet of the first and second layers to a desired shape in accordance to each other, alignedly gluing the first and second layers of the cut sheets, and pressing the corresponding first and second layers of the cut sheets to firmly glue with each other and drying the first and second layers of the cut sheets, so that the insole is formed.
- the insole commonly made by the above mentioned process has the plurality of drawbacks.
- insole glues the two layer of the insole before tailoring the two layers thereof so that the efficiency of the process is slightly increased.
- the pre-glued two layers of insole require a large amount of glue, which is material waste and rising another the environmental issue of the pollutant of glue.
- the large gluing surface between the two layers is hard to control the amount of the glue, so as to reduce the quality of the insole.
- the sheets of first and second layers are trimmed or cut to a predetermined shape for fittedly accommodated within the bottom sole of the shoe, so that only the cut parts of the cut sheets are used for making the insole. The other non-cut parts of the cut sheets are wasted.
- a predetermined accuracy of the aligning step for attaching the cut sheets of first layer to the second layer is required for the perfect looking of the insole.
- the amount of glue is hard to evenly apply thereon, so that partial of the first and second layers are insecurely attached with each other, so as to reduce the quality of insole.
- the manually glued first and second layers are easily detached apart from each other during the washing or cleaning process of the insole, so as to decrease the life time of the insole.
- the glue used in the process usually has the property of volatile, so that the toxicity of the glue may be easily evaporated in the air, so as to harm the health and pollute the environment.
- the present invention is preferably making the insole with the TPR material, which is made of thermoplastic material, has both characteristics of rubber and thermoplastic material, such that this type of material has the processability of thermoplastic and the physical properties of vulcanized rubber.
- the second layer is also made of cushioning material for providing a cushion effect of the non-peelable insole pad.
- the TPR material is able to be processed by the traditional plastic material processing equipments without vulcanizing, so as to provide a relatively more environmental friendly product.
- An object of the present invention is to provide an insole and its manufacturing method of integrally forming the first and second layers by mold injection in order to improve the above mentioned shortages of existing art.
- the present invention provides an insole, which comprises a first layer, embodied as PU layer, and a second layer, embodied as TPR layer, integrally and continuously formed with the first layer preferably by thermoplastic process.
- the present invention provides an insole, which is non-peelable for enhancing the durability of the insole. Accordingly, the bonding between the first and second layer of the insole is relatively strong, so that after bending, heating, or soaking the insole in water, the first and second layers are not separated from each other. In addition, no complicated alignment is involved for bonding the first and second layers of the insole, so as to simplify the manufacturing process of the insole.
- Another object of the present invention is to provide an insole, wherein no glue is required for bonding the first and second layer of the insole, so as to provide a relatively more eco friendly product.
- Another object of the present invention is to provide an insole, wherein the injected second layer of the insole minimizes the waste of raw material.
- Another object of the present invention is to provide a method of making the insole, wherein the method significantly increases the productivity and efficiency of manufacturing process of insole, so as to minimize the manufacturing cost.
- Another object of the present invention is to provide a method of making the insole, which does not require to alter the original structural design of the insole, so as to minimize the manufacturing cost of the insole with the integrated structure.
- Another object of the present invention is to provide a method of making the insole, wherein no expensive or complicated structure is required to employ in the present invention in order to achieve the above mentioned objects. Therefore, the present invention successfully provides an economic and efficient solution for providing an integrated configuration for the insole.
- the present invention also provides a method for making the insole, wherein the method comprises the following steps.
- (c) Inject an injection material of the second layer at a fluid state, which is embodied as TPR material, wherein the injection material is injected into the sealing cavity of the insole mold to evenly dispense on the first layer.
- TPR material a fluid state
- a thickness of the second layer is selectively adjusted by a volume of the fluid material of the second layer.
- the injecting temperature is between 150° C. and 300° C.
- the insole mold comprises a first molding body having a first molding cavity and a second molding body having a second molding cavity, wherein the first layer is disposed within the first molding cavity, wherein said injection material in injected into the second molding cavity through an injection channel thereat.
- the present invention eliminates the trimming process of the second material, which embodied as TPR material, and the process of manually gluing the first layer embodied as PU layer and the second layer, so as to enhance the efficiency of producing the insole.
- the first layer of the PU material and the second layer of the second layer of the TPR material are bonded under high temperature, so that the first and second layers are able to be firmly and securely attached to each other, so as to prolong the life time of the insole.
- the present invention is able to efficiently utilize the TPR or other injection source of the second material, so as to minimize the original material cost to minimize the unnecessary waste of material.
- the TPR material is also recyclable, so as to meet the environmental friendly requirement.
- the second layer is integrally bonded with the first layer to form the non-peelable insole with the following advantages.
- the first and second layers are bonded together without the use of glue.
- the glue is a chemical compound having the property of volatile, so that the toxicity of the glue may be easily evaporated in the air, so as to harm the health and pollute the environment.
- the second layer Since the second layer is injected on the first layer, the second layer will perfectly align with the first layer.
- the conventional glue method the second layer is cut and is required to align with the first layer in order to glue the second layer on the first layer. Therefore, the conventional insole must be trimmed its edge to keep the clean edge.
- the material of the first layer will not be limited as PU only. In other words, other materials can be used for the first layer to integrally bond with the second layer.
- the conventional glue method can only apply to the PU and TPR glue-bonding.
- the process of the present invention will significantly increase the productivity and efficiency of manufacturing process of the non-peelable insole.
- the present invention eliminates the conventional steps of cutting the second layer to match with the first layer, aligning the second layer with the first layer, applying the glue between the first and second layers, and trimming the edge of the insole after the second layer is glued on the first layer.
- the present invention simplifies the entire process by only cutting the first layer and injecting the second layer on the first layer. Therefore, the present invention can save the production time and increase the productivity.
- the present invention can further minimize the labor cost of the non-peelable insole by simply using the injection machine.
- FIG. 1 is a perspective view of a non-peelable insole according to a preferred embodiment of the present invention.
- FIG. 2 is a perspective view of making the first layer of the non-peelable insole according to the preferred embodiment of the present invention.
- FIG. 3 is a top view of an insole mold of the method thereof according to the preferred embodiment of the present invention.
- FIG. 4 is a sectional view of the insole mold according to the preferred embodiment of the present invention.
- FIG. 5 is a sectional view of the insole mold according to the preferred embodiment of the present invention, illustrating the injection material is being injected into a sealing cavity of the insole mold.
- FIG. 6 is a sectional view of a non-peelable insole according to the preferred embodiment of the present invention, illustrating a first layer and second layer integrally attached therewith to form the insole.
- FIG. 7 is a flow diagram of a process of making a non-peelable insole according to a preferred embodiment of the present invention.
- the insole comprises a first layer 1 and a second layer 2 integrally and continuously formed with the first layer 1 in a glue-less manner, wherein the first layers 1 are preferably trimmed and cut from a first sheet, such as leather, rubber or the like, and embodied as PU material (polyurethane).
- the second layer 2 is preferably formed via mold injecting process, so as to integrally and automatically bond with the first layer 10 , embodied as PU layer, via heat or melting to form the bonding therebetween.
- the non-peelable insole pad can be a removable insole received in the shoe.
- the first layer 1 has a top surface for being contacted with a foot of a wearer and a lower surface being integrally bonded with the second layer 2 .
- the first layer 1 is made of non-leather material such as PU material.
- the second layer 2 has a shape in accordance with the first layer 1 and is heat-bonded on the lower surface of the first layer 1 .
- the second layer 2 is injected to the first layer 10 to form the non-peelable insole pad, such that no glue is required to bond between the first and second layers 1 , 2 .
- the second layer 2 is made of cushioning material for providing a cushion effect of the non-peelable insole pad.
- the second layer 2 is made of TPR material.
- the second layer 2 is preferably formed by molding injection method, so as to integrally bonding with the first layer 1 to form the non-peelable insole pad. Therefore, the second layer 2 is preferably formed by a fluid material as an injection material, wherein the injection material is injected directly on the lower surface of the first layer 1 , such that a secure bonding is formed between the lower surface of the first layer 1 and an upper surface of the second layer 2 . Accordingly the second layer 2 also has a bottom surface provided for contacting with a bottom sole of the shoe, so as to be supported and accommodated therewithin. It is worth mentioning that the upper and bottom surfaces of the second layer 2 are formed after the fluid material of the second layer 2 is solidified.
- the present invention provides a process for making the non-peelable insole which comprises the following steps. First, cut a first sheet 3 to form a plurality of the first layers 1 . Second, heat-bond the second layer 2 on the first layer 1 to formed the non-peelable insole pad in a glue-less manner.
- the step of cutting the first sheet 3 which is preferably PU material, to form a plurality of the first layers 1 of the insole is provided. Accordingly, the first sheet 3 is cut to form the first layers 1 having a predetermined shape for being able to be accommodated within a bottom sole of a shoe.
- the first sheet 3 is preferably made by a material of polyurethane (PU) and being cut to form the first layer 1 , wherein a graphic print, such as a predetermined pattern, color, and/or texture, may be provided on the top surface of the first layer 1 , such that the predetermined pattern, such as a designed graphic, and texture may enhance the aesthetic appearance of the insole and create a smoothie and comfy texture for being contacted with the foot of the wearer.
- PU polyurethane
- an insole mold 4 for making the non-peelable insole is illustrated, wherein the insole mold 4 comprises a second molding body 41 as an upper mold body and a first molding body 42 as a bottom mold body to pivotally enclose with the second molding body 41 to form a sealing cavity therewithin of the insole mold, which has a shape in accordance with a shape of the insole, wherein an injecting channel 410 is preferably formed at the second molding body 41 for communicating with the sealing cavity.
- the method further comprises a step of disposing the cut first layer 1 in the respective first molding body 42 of the insole mold 4 , enclosing the second molding body 41 with the first molding body 42 to seal the sealing cavity of the insole mold, and placing an injection material, embodied as TPR material into an injecting device 5 , as shown in FIG. 5 .
- an injecting temperature during the injecting process is preferably set between 150° C. and 300° C., so that the injected injection material will not damage the material structure of the first layer 1 while being able to securely attach with the first layer 1 .
- the fluid material of the second layer 2 is injected evenly onto the first layer 1 . Then, a shape of the fluid material is retained to match with the first layer 1 until the fluid material of the second layer 2 becomes solid, so as to integrally form the second layer 2 on the first layer 1 . More specifically, the injection material is previously being heated to a predetermined temperature and liquefied for injecting into an insole mold 4 , such that a covalent bonding may occurred between the lower surface of the first layer 1 and the upper surface of the second layer 2 .
- the first and second layers 1 , 2 are integrally and continuously formed the non-peelable insole without any glue involved.
- the first layer 1 is directly bonded to the second layer 2 via the covalent bonding therebetween, which is a more secure and stronger bonding than traditional Van der Waals force between the first and second layers 1 , 2 via glue.
- the finished insole formed by the first layer 1 and the second layer 2 of the injection material is able to be removed from the insole mold when the temperature of the injection material is cooled to a predetermined temperature.
- the injection material for making the second layer 2 is preferably made by a material having the physical properties of both plastic and rubber, so that the second layer 2 is able to provide a predetermined hardness for supporting the first layer 1 thereon, while having a predetermined flexibility for being bended for enhancing the comfortableness of the shoe with the insole.
- the second layer 2 is embodied as a material of thermoplastic rubber (TPR) for bonding with the first layer 1 , so as to form the covalent bonding between the lower surface of the first layer 1 and the upper surface of the second layer 2 .
- TPR thermoplastic rubber
- a step of trimming a peripheral edge of the finished insole may be provided if the insole formed by the above mentioned injecting process has imperfectly remaining injection material protruded at the peripheral edge thereof, so as to obtain a finalized product of non-peelable insole.
- the present invention is able to effectively enhance the production rate and to securely and evenly form the first layer 1 embodied as PU layer with the second layer 2 embodied as the TPR layer. Therefore, the life time of the insole is significantly increased.
- the preferred TPR material used for the injecting process also meet the environmental standard.
- the TPR material has the physical properties of both plastic and rubber, so that it is TPR is preferably adapted as the injection material to form the second layer 2 in the mold injection manner.
- the TPR material is also well known as a material for easily processing via mold injection. It is appreciated by one skilled in the art that the TPR has widely adhesive properties for being easily adhesive with variety of materials, and great resistance of deformation while having a desired flexibility.
- the second layer 2 made by the TPR material having the desired flexibility also provides a cushioning properties of the insole to enhance the comfortableness thereof.
- the resistance of deformation of the TPR increases the durability of the insole and provides a support for the first layer 10 , so as to remain its position and shape thereof.
- the thickness of the second layer 2 is selectively adjusted by a volume of the fluid material of the second layer 2 .
- the thickness of the second layer 2 is fixed.
- the second layer 2 of the present invention provides the cushioning effect of the non-peelable insole pad.
- the thickness of the second layer 2 of the present invention can be selectively controlled by the volume of the fluid material of the second layer 2 injected on the first layer 1 .
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Abstract
An insole of the present invention includes a first layer, and a second layer integrally and continuously formed with the first layer. The second layer is mold-injected on the first layer to bond the second layer with the first layer, so as to form the stable bonding therebetween for securely and integrally bonding the first and second layers in a glue-less manner.
Description
- 1. Field of Invention
- The present invention relates to an insole of a shoe, and more particularly to a non-peelable insole, wherein the non-peelable insole has a first layer integrally and continuously formed with a second layer, such that the first and second layer are firmly attached with each other to form the non-peelable insole.
- 2. Description of Related Arts
- Most of the shoes have an insole, which normally has an upper layer and a lower layer attached to the upper layer by glue, and the lower layer may be provided as a cushion layer for enhancing the comfortableness when the user is wearing the shoe, while the upper layer may provide a smoothie surface for being directly contacted with the user's feet, so as to provide different designed graphics thereon within the shoe cavity for replacing on the bottom shoe sole. The China Patent application, which has an application number of 200410026765, has published a process of making the shoe insole. This invention disclosed the upper layer of the shoe insole is made by forming a center piece of the upper layer and disposing the center piece in a center portion of a cavity of the mold. Then, the injection material, which is PU material, is injected into the cavity of the mold such that the injection material is outwardly extended from the center piece and is formed at the outer peripheral portion of the upper layer. Accordingly, the center piece of the upper layer is made of EVA material treated with foaming process and precut into a predetermined shape. Alternatively, the center piece can be flattened and precut into the predetermined shape.
- Traditionally, the insoles are made by a process comprises the steps of providing a sheet of the first layer, such as PU layer (polyurethane), and a sheet of the second layer, such as PVC layer (polyvinyl chloride), cutting the sheet of the first and second layers to a desired shape in accordance to each other, alignedly gluing the first and second layers of the cut sheets, and pressing the corresponding first and second layers of the cut sheets to firmly glue with each other and drying the first and second layers of the cut sheets, so that the insole is formed. However, the insole commonly made by the above mentioned process has the plurality of drawbacks.
- Firstly, the process of separately forming, tailoring, and gluing the two layers, such as the PU layer and PVC layer, requires a great amount of work by human, so that it is time consuming and inefficient.
- Secondly, some traditional process of making insole glues the two layer of the insole before tailoring the two layers thereof, so that the efficiency of the process is slightly increased. However, the pre-glued two layers of insole require a large amount of glue, which is material waste and rising another the environmental issue of the pollutant of glue. Further more, the large gluing surface between the two layers is hard to control the amount of the glue, so as to reduce the quality of the insole.
- Third, the sheets of first and second layers are trimmed or cut to a predetermined shape for fittedly accommodated within the bottom sole of the shoe, so that only the cut parts of the cut sheets are used for making the insole. The other non-cut parts of the cut sheets are wasted.
- Fourth, in order to align the cut sheets of the first and second layers for being bonding therewith via glue, a predetermined accuracy of the aligning step for attaching the cut sheets of first layer to the second layer is required for the perfect looking of the insole. The amount of glue is hard to evenly apply thereon, so that partial of the first and second layers are insecurely attached with each other, so as to reduce the quality of insole.
- Fifth, the manually glued first and second layers are easily detached apart from each other during the washing or cleaning process of the insole, so as to decrease the life time of the insole.
- Sixth, the glue used in the process usually has the property of volatile, so that the toxicity of the glue may be easily evaporated in the air, so as to harm the health and pollute the environment.
- On the other hand, the present invention is preferably making the insole with the TPR material, which is made of thermoplastic material, has both characteristics of rubber and thermoplastic material, such that this type of material has the processability of thermoplastic and the physical properties of vulcanized rubber. The second layer is also made of cushioning material for providing a cushion effect of the non-peelable insole pad. Moreover, the TPR material is able to be processed by the traditional plastic material processing equipments without vulcanizing, so as to provide a relatively more environmental friendly product.
- An object of the present invention is to provide an insole and its manufacturing method of integrally forming the first and second layers by mold injection in order to improve the above mentioned shortages of existing art.
- Accordingly, in order to accomplish the above objects, the present invention provides an insole, which comprises a first layer, embodied as PU layer, and a second layer, embodied as TPR layer, integrally and continuously formed with the first layer preferably by thermoplastic process. In particular, the present invention provides an insole, which is non-peelable for enhancing the durability of the insole. Accordingly, the bonding between the first and second layer of the insole is relatively strong, so that after bending, heating, or soaking the insole in water, the first and second layers are not separated from each other. In addition, no complicated alignment is involved for bonding the first and second layers of the insole, so as to simplify the manufacturing process of the insole.
- Another object of the present invention is to provide an insole, wherein no glue is required for bonding the first and second layer of the insole, so as to provide a relatively more eco friendly product.
- Another object of the present invention is to provide an insole, wherein the injected second layer of the insole minimizes the waste of raw material.
- Another object of the present invention is to provide a method of making the insole, wherein the method significantly increases the productivity and efficiency of manufacturing process of insole, so as to minimize the manufacturing cost.
- Another object of the present invention is to provide a method of making the insole, which does not require to alter the original structural design of the insole, so as to minimize the manufacturing cost of the insole with the integrated structure.
- Another object of the present invention is to provide a method of making the insole, wherein no expensive or complicated structure is required to employ in the present invention in order to achieve the above mentioned objects. Therefore, the present invention successfully provides an economic and efficient solution for providing an integrated configuration for the insole.
- The present invention also provides a method for making the insole, wherein the method comprises the following steps.
- (a) Cut a first sheet to form a plurality of first layers of an insole.
- (b) Dispose the first layers into a sealing cavity of the insole mold, and enclose the first layer within the sealing cavity.
- (c) Inject an injection material of the second layer at a fluid state, which is embodied as TPR material, wherein the injection material is injected into the sealing cavity of the insole mold to evenly dispense on the first layer. It is worth mentioning that a thickness of the second layer is selectively adjusted by a volume of the fluid material of the second layer. After the injection material is cooled down, the TPR as the injection material is formed a predetermined shape of the insole in accordance with the first layer and to bond with the first layer, which is embodied as PU layer. In other words, the first layer is bonded with the second layer through the thermoplastic formation.
- (d) Open the sealing cavity of the insole mold to remove the final product of the non-peelable insole.
- In the step of injecting the fluid injection material of the method of making the insole, the injecting temperature is between 150° C. and 300° C.
- In the method of making the insole, the insole mold comprises a first molding body having a first molding cavity and a second molding body having a second molding cavity, wherein the first layer is disposed within the first molding cavity, wherein said injection material in injected into the second molding cavity through an injection channel thereat.
- Therefore, the present invention eliminates the trimming process of the second material, which embodied as TPR material, and the process of manually gluing the first layer embodied as PU layer and the second layer, so as to enhance the efficiency of producing the insole. The first layer of the PU material and the second layer of the second layer of the TPR material are bonded under high temperature, so that the first and second layers are able to be firmly and securely attached to each other, so as to prolong the life time of the insole. Furthermore, the present invention is able to efficiently utilize the TPR or other injection source of the second material, so as to minimize the original material cost to minimize the unnecessary waste of material. The TPR material is also recyclable, so as to meet the environmental friendly requirement.
- Accordingly, the second layer is integrally bonded with the first layer to form the non-peelable insole with the following advantages.
- Perfect bounding: By injecting the fluid material of the second layer to bond with the first layer via a relatively strong bonding in comparison with the glue, the first and second layers will not be separate after wearing, bending, heating, washing, or soaking the insole.
- Environmental friendly: The first and second layers are bonded together without the use of glue. As it is mentioned above, the glue is a chemical compound having the property of volatile, so that the toxicity of the glue may be easily evaporated in the air, so as to harm the health and pollute the environment.
- Better appearance: Since the second layer is injected on the first layer, the second layer will perfectly align with the first layer. As the conventional glue method, the second layer is cut and is required to align with the first layer in order to glue the second layer on the first layer. Therefore, the conventional insole must be trimmed its edge to keep the clean edge.
- Clean appearance: No glue seam between the first and second layers is formed. Accordingly, with the conventional glue method, the glue seam between the first and second layers is virtually impossible to eliminate.
- Product expansion ability: With the injection method of the present invention, the material of the first layer will not be limited as PU only. In other words, other materials can be used for the first layer to integrally bond with the second layer. However, the conventional glue method can only apply to the PU and TPR glue-bonding.
- Mass production: The process of the present invention will significantly increase the productivity and efficiency of manufacturing process of the non-peelable insole. The present invention eliminates the conventional steps of cutting the second layer to match with the first layer, aligning the second layer with the first layer, applying the glue between the first and second layers, and trimming the edge of the insole after the second layer is glued on the first layer. In other words, the present invention simplifies the entire process by only cutting the first layer and injecting the second layer on the first layer. Therefore, the present invention can save the production time and increase the productivity.
- Minimize manpower: The present invention can further minimize the labor cost of the non-peelable insole by simply using the injection machine.
- Still further objects and advantages will become apparent from a consideration of the ensuing description and drawings.
- These and other objectives, features, and advantages of the present invention will become apparent from the following detailed description, the accompanying drawings, and the appended claims.
-
FIG. 1 is a perspective view of a non-peelable insole according to a preferred embodiment of the present invention. -
FIG. 2 is a perspective view of making the first layer of the non-peelable insole according to the preferred embodiment of the present invention. -
FIG. 3 is a top view of an insole mold of the method thereof according to the preferred embodiment of the present invention. -
FIG. 4 is a sectional view of the insole mold according to the preferred embodiment of the present invention. -
FIG. 5 is a sectional view of the insole mold according to the preferred embodiment of the present invention, illustrating the injection material is being injected into a sealing cavity of the insole mold. -
FIG. 6 is a sectional view of a non-peelable insole according to the preferred embodiment of the present invention, illustrating a first layer and second layer integrally attached therewith to form the insole. -
FIG. 7 is a flow diagram of a process of making a non-peelable insole according to a preferred embodiment of the present invention. - These and other objectives, features, and advantages of the present invention will become apparent from the following detailed description, the accompanying drawings, and the appended claims.
- Referring to
FIGS. 1 and 6 of the drawings, a non-peelable insole according to a preferred embodiment of the present invention is illustrated, wherein the insole comprises afirst layer 1 and asecond layer 2 integrally and continuously formed with thefirst layer 1 in a glue-less manner, wherein thefirst layers 1 are preferably trimmed and cut from a first sheet, such as leather, rubber or the like, and embodied as PU material (polyurethane). Thesecond layer 2 is preferably formed via mold injecting process, so as to integrally and automatically bond with the first layer 10, embodied as PU layer, via heat or melting to form the bonding therebetween. Accordingly, the non-peelable insole pad can be a removable insole received in the shoe. Accordingly, thefirst layer 1 has a top surface for being contacted with a foot of a wearer and a lower surface being integrally bonded with thesecond layer 2. Preferably, thefirst layer 1 is made of non-leather material such as PU material. Thesecond layer 2 has a shape in accordance with thefirst layer 1 and is heat-bonded on the lower surface of thefirst layer 1. Preferably, thesecond layer 2 is injected to the first layer 10 to form the non-peelable insole pad, such that no glue is required to bond between the first andsecond layers second layer 2 is made of cushioning material for providing a cushion effect of the non-peelable insole pad. In particularly, thesecond layer 2 is made of TPR material. Thesecond layer 2 is preferably formed by molding injection method, so as to integrally bonding with thefirst layer 1 to form the non-peelable insole pad. Therefore, thesecond layer 2 is preferably formed by a fluid material as an injection material, wherein the injection material is injected directly on the lower surface of thefirst layer 1, such that a secure bonding is formed between the lower surface of thefirst layer 1 and an upper surface of thesecond layer 2. Accordingly thesecond layer 2 also has a bottom surface provided for contacting with a bottom sole of the shoe, so as to be supported and accommodated therewithin. It is worth mentioning that the upper and bottom surfaces of thesecond layer 2 are formed after the fluid material of thesecond layer 2 is solidified. - More specifically, in order to manufacture the non-peelable insole, the present invention provides a process for making the non-peelable insole which comprises the following steps. First, cut a
first sheet 3 to form a plurality of the first layers 1. Second, heat-bond thesecond layer 2 on thefirst layer 1 to formed the non-peelable insole pad in a glue-less manner. - As shown in
FIGS. 2 and 7 , the step of cutting thefirst sheet 3, which is preferably PU material, to form a plurality of thefirst layers 1 of the insole is provided. Accordingly, thefirst sheet 3 is cut to form thefirst layers 1 having a predetermined shape for being able to be accommodated within a bottom sole of a shoe. Thefirst sheet 3 is preferably made by a material of polyurethane (PU) and being cut to form thefirst layer 1, wherein a graphic print, such as a predetermined pattern, color, and/or texture, may be provided on the top surface of thefirst layer 1, such that the predetermined pattern, such as a designed graphic, and texture may enhance the aesthetic appearance of the insole and create a smoothie and comfy texture for being contacted with the foot of the wearer. It is worth mentioning the after thefirst layer 1 is cut from thefirst sheet 3, the graphic print will form on the top surface of thefirst layer 1. - As shown in
FIGS. 3 and 4 of the drawings, aninsole mold 4 for making the non-peelable insole is illustrated, wherein theinsole mold 4 comprises asecond molding body 41 as an upper mold body and afirst molding body 42 as a bottom mold body to pivotally enclose with thesecond molding body 41 to form a sealing cavity therewithin of the insole mold, which has a shape in accordance with a shape of the insole, wherein an injectingchannel 410 is preferably formed at thesecond molding body 41 for communicating with the sealing cavity. - Accordingly, as shown in
FIG. 4 , following the step of cutting thefirst sheet 3, the method further comprises a step of disposing the cutfirst layer 1 in the respectivefirst molding body 42 of theinsole mold 4, enclosing thesecond molding body 41 with thefirst molding body 42 to seal the sealing cavity of the insole mold, and placing an injection material, embodied as TPR material into aninjecting device 5, as shown inFIG. 5 . When the injection material within the injectingdevice 5 is fluidized, a step of injecting the injection material is started, wherein an injecting temperature during the injecting process is preferably set between 150° C. and 300° C., so that the injected injection material will not damage the material structure of thefirst layer 1 while being able to securely attach with thefirst layer 1. In other words, the fluid material of thesecond layer 2 is injected evenly onto thefirst layer 1. Then, a shape of the fluid material is retained to match with thefirst layer 1 until the fluid material of thesecond layer 2 becomes solid, so as to integrally form thesecond layer 2 on thefirst layer 1. More specifically, the injection material is previously being heated to a predetermined temperature and liquefied for injecting into aninsole mold 4, such that a covalent bonding may occurred between the lower surface of thefirst layer 1 and the upper surface of thesecond layer 2. Thus, the first andsecond layers first layer 1 is directly bonded to thesecond layer 2 via the covalent bonding therebetween, which is a more secure and stronger bonding than traditional Van der Waals force between the first andsecond layers - After finishing the process of injecting the injection material into the
insole mold 4, the finished insole formed by thefirst layer 1 and thesecond layer 2 of the injection material is able to be removed from the insole mold when the temperature of the injection material is cooled to a predetermined temperature. The injection material for making thesecond layer 2 is preferably made by a material having the physical properties of both plastic and rubber, so that thesecond layer 2 is able to provide a predetermined hardness for supporting thefirst layer 1 thereon, while having a predetermined flexibility for being bended for enhancing the comfortableness of the shoe with the insole. In the preferred embodiment, thesecond layer 2 is embodied as a material of thermoplastic rubber (TPR) for bonding with thefirst layer 1, so as to form the covalent bonding between the lower surface of thefirst layer 1 and the upper surface of thesecond layer 2. - A step of trimming a peripheral edge of the finished insole may be provided if the insole formed by the above mentioned injecting process has imperfectly remaining injection material protruded at the peripheral edge thereof, so as to obtain a finalized product of non-peelable insole.
- Accordingly, the present invention is able to effectively enhance the production rate and to securely and evenly form the
first layer 1 embodied as PU layer with thesecond layer 2 embodied as the TPR layer. Therefore, the life time of the insole is significantly increased. The preferred TPR material used for the injecting process also meet the environmental standard. As will be readily appreciated that the TPR material has the physical properties of both plastic and rubber, so that it is TPR is preferably adapted as the injection material to form thesecond layer 2 in the mold injection manner. The TPR material is also well known as a material for easily processing via mold injection. It is appreciated by one skilled in the art that the TPR has widely adhesive properties for being easily adhesive with variety of materials, and great resistance of deformation while having a desired flexibility. Therefore, thesecond layer 2 made by the TPR material having the desired flexibility also provides a cushioning properties of the insole to enhance the comfortableness thereof. The resistance of deformation of the TPR increases the durability of the insole and provides a support for the first layer 10, so as to remain its position and shape thereof. - One of the advantages of the present invention is that the thickness of the
second layer 2 is selectively adjusted by a volume of the fluid material of thesecond layer 2. In comparison with the conventional insole, the thickness of thesecond layer 2 is fixed. As it is mentioned above, thesecond layer 2 of the present invention provides the cushioning effect of the non-peelable insole pad. When the thickness of thesecond layer 2 is increased, thesecond layer 2 will provide better cushioning effect of the non-peelable insole pad. Therefore, the thickness of thesecond layer 2 of the present invention can be selectively controlled by the volume of the fluid material of thesecond layer 2 injected on thefirst layer 1. - One skilled in the art will understand that the embodiment of the present invention as shown in the drawings and described above is exemplary only and not intended to be limiting.
- It will thus be seen that the objects of the present invention have been fully and effectively accomplished. The embodiments have been shown and described for the purposes of illustrating the functional and structural principles of the present invention and is subject to change without departure from such principles. Therefore, this invention includes all modifications encompassed within the spirit and scope of the following claims.
Claims (20)
1. An insole for being accommodated within a shoe, comprising a first layer and a second layer having a shape in accordance with said first layer, wherein said second layer is integrally and continuously formed with said first layer to formed a non-peelable insole pad in a glue-less manner.
2. The insole, as recited in claim 1 , wherein said second layer is mold-injected on said first layer to form said non-peelable insole pad.
3. The insole, as recited in claim 2 , wherein said second layer is heat-bonded with said first layer to form said non-peelable insole pad.
4. The insole, as recited in claim 3 , wherein said second layer is bond with said first layer to form said non-peelable insole pad through a thermoplastic formation.
5. The insole, as recited in claim 1 , wherein said second layer is made of TPR material.
6. The insole, as recited in claim 4 , wherein said second layer is made of TPR material.
7. The insole, as recited in claim 1 , wherein said second layer is made of cushioning material for providing a cushion effect of said non-peelable insole pad.
8. The insole, as recited in claim 6 , wherein said second layer is made of cushioning material for providing a cushion effect of said non-peelable insole pad.
9. A method for manufacturing a non-peelable insole, which comprises the steps of:
(a) cutting a first sheet to form a plurality of first layers;
(b) heat-bonding a second layer on said first layer, wherein said second layer is integrally and continuously formed with said first layer to formed a non-peelable insole pad in a glue-less manner.
10. The method, as recited in claim 9 , wherein the step (b) further comprises the steps of:
(b.1) injecting a fluid material of said second layer evenly onto said first layer; and
(b.2) retaining a shape of said fluid material to match with said first layer until said fluid material of said second layer becomes solid, so as to integrally form said second layer on said first layer.
11. The method as recited in claim 9 wherein, in the step (b), second layer is integrated with said first layer through a thermoplastic formation.
12. The method as recited in claim 10 wherein, in the step (b), second layer is integrated with said first layer through a thermoplastic formation.
13. The method, as recited in claim 9 , wherein said second layer is made of TPR material.
14. The method, as recited in claim 12 , wherein said second layer is made of TPR material.
15. The method as recited in claim 10 wherein in the step (b.1), the injecting temperature is between 150° C. and 300° C.
16. The method as recited in claim 14 wherein in the step (b.1), the injecting temperature is between 150° C. and 300° C.
17. The method as recited in claim 10 wherein, in the step (b), said second layer is bonded on said first layer via an insole mold by a process of:
disposing said first layer on a first molding body of said insole mold;
enclosing said first molding body by a second molding body of said insole mold to define a sealing cavity between said first and second molding bodies, wherein said second molding body has at least an injection channel communicating with said sealing cavity; and
injecting said fluid material of said second layer through said injection channel into said sealing cavity to evenly dispense on said first layer.
18. The method as recited in claim 16 wherein, in the step (b), said second layer is bonded on said first layer via an insole mold by a process of:
disposing said first layer on a first molding body of said insole mold;
enclosing said first molding body by a second molding body of said insole mold to define a sealing cavity between said first and second molding bodies, wherein said second molding body has at least an injection channel communicating with said sealing cavity; and
injecting said fluid material of said second layer through said injection channel into said sealing cavity to evenly dispense on said first layer.
19. The method, as recited in claim 18 , wherein a thickness of said second layer is selectively adjusted by a volume of said fluid material of said second layer.
20. The method, as recited in claim 19 , wherein said second layer is made of cushioning material for providing a cushion effect of said non-peelable insole pad.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2009101926868A CN101664239B (en) | 2009-09-27 | 2009-09-27 | Middle sole and manufacturing technique thereof |
CN200910192686.8 | 2009-09-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
US20110072686A1 true US20110072686A1 (en) | 2011-03-31 |
Family
ID=41801144
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/924,121 Abandoned US20110072686A1 (en) | 2009-09-27 | 2010-09-20 | Non-peelabel insole and manufacturing method |
Country Status (2)
Country | Link |
---|---|
US (1) | US20110072686A1 (en) |
CN (1) | CN101664239B (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100193992A1 (en) * | 2007-02-09 | 2010-08-05 | Nike, Inc. | Laminate and method for making laminate |
US20110283562A1 (en) * | 2010-05-21 | 2011-11-24 | George Shrum | Insole for footwear |
US20120260533A1 (en) * | 2011-04-18 | 2012-10-18 | Columbia Sportswear North America, Inc. | Adhering footwear |
EP3078289A1 (en) * | 2015-03-06 | 2016-10-12 | Franz Fischer | Shoe insert and method for producing a shoe insert |
US9516915B2 (en) * | 2015-01-25 | 2016-12-13 | Yuliya Zhurba | Foot pad |
WO2016161187A3 (en) * | 2015-03-31 | 2017-02-09 | Zerog Oy | System and method for reproducing molded insole |
US10506844B1 (en) * | 2015-01-25 | 2019-12-17 | Yuliya Zhurba | Foot pad |
US11026477B2 (en) * | 2019-03-14 | 2021-06-08 | Allbirds, Inc. | Shoes with knit upper portion |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102232665A (en) * | 2010-04-27 | 2011-11-09 | 东莞汉星鞋材有限公司 | Tough PU (polyurethane) thin film-coated shoe material and manufacturing method thereof |
CN102001188A (en) * | 2010-12-03 | 2011-04-06 | 张华荣 | Midsole and manufacturing method thereof |
CN102173031B (en) * | 2011-01-07 | 2013-08-07 | 宇科塑料(厦门)有限公司 | Bracer production process |
CN104441409A (en) * | 2014-11-04 | 2015-03-25 | 林仔孺 | Production process of foamed TPU (Thermoplastic polyurethane) sole |
CN106273184A (en) * | 2016-08-23 | 2017-01-04 | 吴声鸿 | A kind of manufacture method of puffed rice sole |
CN109177265A (en) * | 2018-08-23 | 2019-01-11 | 扬州朗劲塑胶实业有限公司 | A kind of manufacture craft of midsole |
Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3825017A (en) * | 1973-01-31 | 1974-07-23 | J Scrima | Foot conforming insole for a shoe |
US4062131A (en) * | 1976-09-10 | 1977-12-13 | Scholl, Inc. | Insoles for footwear |
US5388349A (en) * | 1992-01-31 | 1995-02-14 | Ogden, Inc. | Footwear insole |
US5499460A (en) * | 1992-02-18 | 1996-03-19 | Bryant; Yvonne G. | Moldable foam insole with reversible enhanced thermal storage properties |
US6195917B1 (en) * | 1998-07-10 | 2001-03-06 | Walk Easy Manufacturing, Inc. | Footwear insole insert |
US6481120B1 (en) * | 2000-07-31 | 2002-11-19 | Schering-Plough Healthcare Products, Inc. | Full length insole for arthritic and/or diabetic people |
US6523206B2 (en) * | 2001-04-06 | 2003-02-25 | Steven P. Royall | Custom orthotic sandal and process for constructing |
US20050183219A1 (en) * | 2004-02-23 | 2005-08-25 | Gregory Saladino | Method of fabricating custom-fitted footbed |
US20050241186A1 (en) * | 2004-04-16 | 2005-11-03 | Ron Mulligan | Thermoplastic printed film innersole for shoes |
US20060026865A1 (en) * | 2004-08-06 | 2006-02-09 | Schering Plough Healthcare Products Inc. | Insole |
US20060254088A1 (en) * | 2004-06-19 | 2006-11-16 | Mccormick Bruce | Thermal liner for an article of clothing |
US20060277801A1 (en) * | 2005-06-10 | 2006-12-14 | Werner Schwarze | Insole |
US7153457B2 (en) * | 2001-10-15 | 2006-12-26 | Surefit, Inc. | Method for providing custom fit therapeutic footwear |
US20110219642A1 (en) * | 2007-11-21 | 2011-09-15 | Spenco Medical Corporation | Arthritis & Diabetes Insole |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5743027A (en) * | 1995-11-29 | 1998-04-28 | Barma; Tarachand S. | Rubber footwear and method of making same |
CN1370674A (en) * | 2001-02-26 | 2002-09-25 | 彰昱实业股份有限公司 | Integrating shoes-making method with different material |
-
2009
- 2009-09-27 CN CN2009101926868A patent/CN101664239B/en active Active
-
2010
- 2010-09-20 US US12/924,121 patent/US20110072686A1/en not_active Abandoned
Patent Citations (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3825017A (en) * | 1973-01-31 | 1974-07-23 | J Scrima | Foot conforming insole for a shoe |
US4062131A (en) * | 1976-09-10 | 1977-12-13 | Scholl, Inc. | Insoles for footwear |
US5388349A (en) * | 1992-01-31 | 1995-02-14 | Ogden, Inc. | Footwear insole |
US5499460A (en) * | 1992-02-18 | 1996-03-19 | Bryant; Yvonne G. | Moldable foam insole with reversible enhanced thermal storage properties |
US6195917B1 (en) * | 1998-07-10 | 2001-03-06 | Walk Easy Manufacturing, Inc. | Footwear insole insert |
US20010001351A1 (en) * | 1998-07-10 | 2001-05-24 | Dieckhaus Wayne R. | Footwear insole insert |
US6481120B1 (en) * | 2000-07-31 | 2002-11-19 | Schering-Plough Healthcare Products, Inc. | Full length insole for arthritic and/or diabetic people |
US6523206B2 (en) * | 2001-04-06 | 2003-02-25 | Steven P. Royall | Custom orthotic sandal and process for constructing |
US7153457B2 (en) * | 2001-10-15 | 2006-12-26 | Surefit, Inc. | Method for providing custom fit therapeutic footwear |
US20050183219A1 (en) * | 2004-02-23 | 2005-08-25 | Gregory Saladino | Method of fabricating custom-fitted footbed |
US20050241186A1 (en) * | 2004-04-16 | 2005-11-03 | Ron Mulligan | Thermoplastic printed film innersole for shoes |
US20060254088A1 (en) * | 2004-06-19 | 2006-11-16 | Mccormick Bruce | Thermal liner for an article of clothing |
US20060026865A1 (en) * | 2004-08-06 | 2006-02-09 | Schering Plough Healthcare Products Inc. | Insole |
US20060277801A1 (en) * | 2005-06-10 | 2006-12-14 | Werner Schwarze | Insole |
US20110219642A1 (en) * | 2007-11-21 | 2011-09-15 | Spenco Medical Corporation | Arthritis & Diabetes Insole |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100193992A1 (en) * | 2007-02-09 | 2010-08-05 | Nike, Inc. | Laminate and method for making laminate |
US9986785B2 (en) | 2007-02-09 | 2018-06-05 | Nike, Inc. | Laminate and method for making laminate |
US9924762B2 (en) | 2007-02-09 | 2018-03-27 | Nike, Inc. | Laminate and method for making laminate |
US8524131B2 (en) * | 2007-02-09 | 2013-09-03 | Nike, Inc. | Laminate and method for making laminate |
US9321200B2 (en) | 2007-02-09 | 2016-04-26 | Nike, Inc. | Method for making laminate |
US9321199B2 (en) | 2007-02-09 | 2016-04-26 | Nike, Inc. | Method for making laminate |
US20170055640A1 (en) * | 2010-05-21 | 2017-03-02 | Soxsols, Llc | Insole for footwear |
US20110283562A1 (en) * | 2010-05-21 | 2011-11-24 | George Shrum | Insole for footwear |
US20120260533A1 (en) * | 2011-04-18 | 2012-10-18 | Columbia Sportswear North America, Inc. | Adhering footwear |
US9516915B2 (en) * | 2015-01-25 | 2016-12-13 | Yuliya Zhurba | Foot pad |
US10506844B1 (en) * | 2015-01-25 | 2019-12-17 | Yuliya Zhurba | Foot pad |
EP3078289A1 (en) * | 2015-03-06 | 2016-10-12 | Franz Fischer | Shoe insert and method for producing a shoe insert |
WO2016161187A3 (en) * | 2015-03-31 | 2017-02-09 | Zerog Oy | System and method for reproducing molded insole |
US11026477B2 (en) * | 2019-03-14 | 2021-06-08 | Allbirds, Inc. | Shoes with knit upper portion |
US11659893B2 (en) | 2019-03-14 | 2023-05-30 | Allbirds, Inc. | Shoe with knit upper portion |
Also Published As
Publication number | Publication date |
---|---|
CN101664239A (en) | 2010-03-10 |
CN101664239B (en) | 2011-12-07 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20110072686A1 (en) | Non-peelabel insole and manufacturing method | |
US20180000195A1 (en) | Thermoforming footwear method | |
US20150265000A1 (en) | Sole assembly with bladder element having a peripheral outer wall portion and method of manufacturing same | |
KR101214673B1 (en) | Method of manufacturing footwear | |
US8793903B2 (en) | Half-insert used in setting middle-sole of shoes | |
US20090071035A1 (en) | Footwear construction | |
EP2337469B1 (en) | Shoe having a midsole with heel support | |
US20130000157A1 (en) | Sole Structure | |
US6540864B1 (en) | Method of making a shoe having a foamed insole with peripheral pattern | |
US20130133227A1 (en) | Footwear and Production Method Thereof | |
CN104074340A (en) | Environment-friendly PVC-free plastic cement floor and preparing method of environment-friendly PVC-free plastic cement floor | |
TWI597233B (en) | Bicycle seat body manufacturing methods | |
CN106275148B (en) | Method for manufacturing bicycle seat cushion body | |
TWM512936U (en) | Durable shoe sole structure without adhesion | |
US20110088288A1 (en) | Fabric footwear outsole and method of manufacturing same | |
KR101719159B1 (en) | Method for manufacturing shoe insole | |
EP1591031A1 (en) | Method for making a shoe | |
CN110421882B (en) | Preparation process of integrally formed shoes | |
AU750421B2 (en) | Method of making a shoe having a foamed insole | |
CN113693336A (en) | Low-resistance hollow breathable sole and preparation process thereof | |
EP2174773A1 (en) | Method for making a shoe | |
JP2003061703A (en) | Sole and its preparation process | |
CN104522930A (en) | Light, durable and anti-puncture shoe structure and manufacturing method of light, durable and anti-puncture shoe structure | |
JP2005052486A (en) | Footwear, and manufacturing method of footwear | |
US20050269010A1 (en) | Method for making a shoe |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: MODIT FOOTWEAR CORP., CALIFORNIA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CHEN, CHIANG;REEL/FRAME:025058/0915 Effective date: 20100624 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |