TW201800026A - Composite shoe pad and manufacturing method thereof characterized by having the advantages of shock absorption, even pressure relief, moisture absorbing and thermo absorbing so as to achieve the effects of dry and cooling, thereby increasing the comfort and use efficiency when the foot touch the shoe pad - Google Patents

Abstract

The present invention provides a composite shoe pad and a manufacturing method thereof, comprising a hydrophilic surface pad layer and a bottom pad layer. Wherein, the hydrophilic surface pad layer is: foaming the hydrophilic PU (polyurethane) to be a foam body, cutting to be a plurality of slices, the surface of each slice being pressedly adhering to a breathable cloth so as to be a surface pad layer semi-finished product. Wherein, the bottom pad layer is: foaming the PU (polyurethane) or EVA (Ethylene Vinyl Acetate) to be a foam body, cutting to be a plurality of slices, punching or not punching each slice to be a bottom pad layer semi-finished product according to the design of the required hole. Then, the surface pad layer semi-finished product and the bottom pad layer semi-finished product are pressedly adhered together to be an integrated slice body. Finally a composite shoe pad is obtained after using a mould to shape the shoe pad and processing a cutting or a trimming. Thereby, the composite shoe pad has the advantages of shock absorption, even pressure relief, moisture absorbing and thermo absorbing so as to achieve the effects of dry (moisture absorbing) and cooling (thermo absorbing) and increase the comfort and use efficiency when the foot touch the shoe pad.

Description

Composite insole and manufacturing method thereof

The invention relates to an insole and a manufacturing method thereof, in particular to a composite insole capable of simultaneously having shock absorption, average pressure release, moisture absorbing and thermo absorbing, so as to make it intimate with the human body. When the soles of the feet are in contact, they can achieve dry (hygroscopic) and cool (heat-absorbing) effects.

The insole is plugged on the inner bottom surface of the shoe and is used to form a contact layer between the inner bottom surface of the shoe and the skin of the foot of the human body (the sole of the foot), so that the insole can be satisfied by the use effect produced or provided by the insole The comfort of the skin (foot) of the foot when consumers wear shoes. Since most shoes, such as sports shoes, are almost covered by the peripheral edge of the human foot, the mesh-covered or waterproof breathable cloth (such as the commercially available COTEX waterproof breathable) Cloth) to improve the ventilation or heat dissipation effect, but the contact surface of the shoe covered on the sole part can only be improved by the insole. Therefore, for consumers, the choice of insole and the additional functional design are relatively important.

Of course, although the insoles known in the market have made various additional functional designs in the insoles, the various functional designs of the prior art are often limited to a specific function, but they are aimed at the common disadvantages of an insole. And problems, such as insufficient shock absorption, insufficient average pressure release, especially insufficient moisture absorption and thermo absorbing There are no technical solutions that can solve the above problems at one time. Therefore, after using the insole for a period of time, the sole of the user's feet is prone to sultry. Therefore, the comfort provided by the insole is not enough for the user of.

Therefore, how to make an insole with a simple structure, which is convenient to manufacture, and relatively low in cost, can be used to improve the comfort of the insole, and to avoid the hot feeling of the contact surface of the feet or soles at the same time. The problem is also a problem to be solved by the present invention.

The present invention was made in order to solve the problems of the above-mentioned prior art, and its object is to provide a composite type which can simultaneously have shock absorption, average pressure release, moisture absorption and thermo absorption during use. The insole and its manufacturing method can achieve dry (hygroscopic) and cool (heat-absorbing) effects when it comes into contact with human feet or soles.

In order to achieve the above object, the present invention provides a composite insole and a manufacturing method thereof. The composite insole includes a hydrophilic surface cushion layer and a bottom cushion layer, wherein the hydrophilic surface cushion layer is made of hydrophilic materials. PU (Polyurethane) is foamed into a foam, and then cut into multiple sheets, and the surface of each sheet can be laminated with a breathable surface cloth to form a surface cushion semi-finished product; the bottom cushion layer It uses PU (polyurethane) or EVA (Ethylene Vinyl Acetate) to foam into a foam, and then cut into multiple sheets, and each sheet can be punched or not punched according to the use or design requirements, such as setting a mesh hole. Hole to form a semi-finished product of the bottom cushion layer; then the semi-finished product of the surface cushion layer and the semi-finished product of the bottom cushion layer are adhered to each other to form a piece, and then the mold is used to shape the insole, and then cut or trim In order to complete a composite insole, the composite insole can simultaneously have shock absorption, average pressure release, moisture absorbing and thermo absorbing, making it in contact with the soles of human feet can It becomes dry (hygroscopic) and cool (heat-absorbing) effects, thereby improving comfort and use efficiency, and meeting mass production requirements.

In the present invention, the foam used to form the hydrophilic surface cushion layer is preferably 40 to 60 parts by weight of a PU prepolymer and 9 to 20 parts by weight of an acrylic emulsion polymer (Acrylic Emulsion polymer). Parts, as the main constituent of the foaming raw material; the ingredients constituting the foaming raw material also contain 0-25 parts by weight of polyether polyol, 0-30 parts by weight of water, 0-25 parts by weight of surfactant, and ammonia The catalyst is 0 to 1 part by weight; and the PU prepolymer contains 40 to 70% by weight of polyether polyol and 30 to 60% by weight of isocyanate, and the molecular weight of the polyether polyol contained in the PU prepolymer is between Between 50 and 2000, and containing at least 40 mole% of ether group (-EO-), and the content of ether group (-EO-) is 20 to 99.9% by weight; and the whole can be produced by the action of the isocyanate with a large amount of water CO _{2 is used} as a foaming agent, and foaming molding, wherein, preferably, the polyether polyol is selected from PEG200, PEG 300, PEG 400, PEG 600 or ethylene glycol, diethylene glycol, propylene glycol or glycerin Any one or a mixture of two or more of the resulting polymers, the isocyanate selected from T One or two or more of DI (Toluene Diissocyanate), MDI (Methylene Diphenyl Diisocyanate), and IPDI (Isophorone Diisocyanate). The surfactant is selected from Pluronic 61, 62, 64, or 101, LK443, DC-198, DC504, LH525, LK260, Brig 93, or a mixture of two or more of Emulgale 1000 NI, the ammonia catalyst is selected from Dabco 33LV, Dabco DMEA, Dabco BL-11, Dabco BL-19, Dabco BL-22, Either ZF-20, ZR-70 or DMP or a mixture of two or more.

In the present invention, preferably, the foaming raw material further comprises 0-20 parts by weight of jelly powder, wherein the jelly powder is a powdery material coated with a melamine resin having a melting point of 28.3 ° C.

The jelly powder (or endothermic powder) is a kind of micro-encapsulated material (micro encapsulation particle). Frisby company in the United States has used jelly powder as an additive to make woven fabrics and hydrophilic (open-cell) foams with insulation and cooling effects, and used the foams in home furnishing. Or medical beds.

In the present invention, preferably, the base layer is further provided with a plurality of holes.

In the present invention, preferably, the plurality of holes are uniformly or non-uniformly distributed on the underlayer.

In the present invention, preferably, a breathable surface cloth is further attached to the upper surface of the hydrophilic surface cushion layer and pressed to form a semi-finished surface cushion layer.

In the present invention, preferably, the thickness of the hydrophilic surface cushion layer is 2 to 4 mm, and the thickness of the bottom cushion layer is 2 to 4 mm.

The hydrophilic PU foam of the present invention can be completed according to the following steps: Step <1> provides a hydrophilic PU prepolymer; the PU prepolymer contains a polyether polyol 40 ~ 70% by weight and isocyanate 30 ~ 60% by weight; and the molecular weight of the polyether polyol contained in the PU prepolymer is between 50 and 2000, and it contains at least 40 mole% of ether groups (-EO-) And the content of ether group (-EO-) is 20 ~ 99.9%; step <2> provides a molding mold; step <3> the 40 ~ 60 parts by weight of the PU prepolymer prepared above and the acrylic emulsified polymer compound (Acrylic Emulsion polymer) 9 ~ 20 parts by weight, as the main constituents of the foaming raw materials; the constituents of the foaming raw materials also include polyether polyols 0-25 parts by weight, water 0-30 parts by weight, surface 0 ~ 25 parts by weight of active agent, ammonia catalyst 0 ~ 1 parts by weight and 0 ~ 20 parts by weight of jelly powder; the raw materials are mixed according to the set weight ratio and injected into the molding mold, the mold temperature is controlled between 30-50 ° C, and the foaming process is performed, and the foaming time is about 5 ~ 10 minutes; In addition, the jelly powder (particulate wrapping material) may be a powdered material coated with melamine resin having a melting point of 28.3 ° C. Step <4> The above raw materials are mixed according to a set weight ratio and injected into a molding mold. Control the temperature between 30 ~ 50 ℃, and carry out the foaming process, the foaming time is about 5 ~ 10 minutes; Step <5> After the foaming is completed, take out the foamed foamed molded body from the mold; Step < 6> Put the foam molding in the oven for high-temperature baking. The temperature of the oven is about 50 ~ 100 ℃. The baking time depends on the size and weight of the object, ranging from tens of minutes to several hours. To achieve the dehydration effect and complete the process of hydrophilic foam.

In the above process, the PU prepolymer is composed of a polyether polyol and an isocyanate in an appropriate ratio, but the PU prepolymer can be made through a preparation procedure such as step <1>, and for the existing In terms of chemical technology, the preceding steps <1> and <3> can also be simplified into a "one shot technique", that is, the above raw materials are directly mixed into the mold and foamed at the appropriate ratio without the need to prepare PU. Prepolymer (PU prepolymer) preparation procedures or steps.

In the above structure of the present invention, the added jelly (heat-absorbing powder) is a micro encapsulation particle, and the jelly can be added or not added (accounting for 0-20%), because the jelly is added to the foam, the There is only a physical reaction between jelly powder and foam raw materials, but no chemical reaction, so there is no production between jelly powder and foam raw materials. New chemical structure or new chemical bond (chemical bond), so adding or not adding jelly powder basically does not affect the moisture absorption (thermoscopic absorption) and heat absorption (thermotropic) of the hydrophilic PU foam of the present invention. absorbing), that is, the hydrophilic PU foam of the present invention can still achieve dry (hygroscopic) and cool (temperature-absorbing) contact use effects.

Further, the present invention also proposes a method for manufacturing a composite insole, which is used to manufacture the composite insole as described in any one of the preceding items, and includes the following steps: Hydrophilic PU (Polyurethane) foam molding A hydrophilic foam body is cut into multiple sheets with a thickness for use as the hydrophilic surface cushion layer, so that each sheet forms a semi-finished product of the hydrophilic surface cushion layer; using PU (polyurethane) or EVA (Ethylene Vinyl Acetate) ) Foam forming a foam body, and then cut into a plurality of sheets with a thickness for the bottom cushion layer, so that each sheet forms a bottom cushion semi-finished product; the hydrophilic surface cushion layer semi-finished product and the bottom The semi-finished products of the cushion layer are adhered and pressed to each other to be connected into a single body; the insole is shaped by the molding mold to complete a semi-finished product of the insole; and the compound insole is completed by cutting or finishing the trimming operation.

In the manufacturing method of the present invention, preferably, a breathable surface cloth is further attached to the upper surface of the sheet serving as the hydrophilic surface cushion layer, and then the semi-finished product of the hydrophilic surface cushion layer is formed by pressing.

In the manufacturing method of the present invention, it is preferable that a plurality of holes are further provided in the sheet serving as the underlayer.

The composite insole manufactured in this way can simultaneously have shock absorption, average pressure release, moisture absorbing and thermo absorbing, so that it can be dry when it comes into contact with the soles of the feet of the human body ( Moisture absorption) and cooling (heat absorption) effects, thereby improving comfort and efficiency, and meeting mass production requirements.

1‧‧‧ composite insole

10‧‧‧ hydrophilic surface cushion

11‧‧‧ top surface

12‧‧‧ lower surface

20‧‧‧ Underlay

21‧‧‧ Top surface

22‧‧‧ lower surface

23‧‧‧ Hole

30‧‧‧ face cloth

40‧‧‧ surface cushion semi-finished product

50‧‧‧Underlayment

FIG. 1 is an external perspective view of an embodiment of the composite insole of the present invention.

Fig. 2 is an exploded view of the structure of the insole shown in Fig. 1.

Figure 3 is a schematic top view of the insole shown in Figure 1.

FIG. 4 is a schematic cross-sectional view taken along line 4-4 in FIG. 3.

FIG. 5 is a schematic cross-sectional view taken along line 5-5 in FIG. 3.

FIG. 6 is a schematic diagram of the semi-finished product of the surface cushion layer and the semi-finished product of the bottom cushion layer before being pressed and shaped during the manufacturing process of the composite insole of the present invention.

In order to make the present invention clearer and more detailed, the preferred embodiments are listed below and the following drawings are used to describe the structure and technical features of the present invention in detail. Among them, the composite insole 1 shown in the figure is one of the present invention. The preferred embodiment, therefore, the outer shape of this embodiment is used to describe the structural features of the present invention but not to limit the present invention.

As shown in FIGS. 1 to 5, the present invention is a composite insole 1, which mainly includes: a hydrophilic surface cushion layer 10 and a bottom cushion layer 20, wherein the hydrophilic surface cushion shown in the drawings Layer 10, underlay layer 20 and the semi-finished surface pad layer 40, semi-finished product underlay layer 50 shown in FIG. The thickness shown is only used to explain the structure of the composite insole 1, so the thickness and proportional relationship of the layers are not shown according to the actual size.

The hydrophilic surface pad layer 10 is a foam layer formed by using hydrophilic PU (Polyurethane). The thickness of the hydrophilic surface pad layer 10 can be set to about 2 to 4 mm, but is not limited. In this embodiment, The thickness of the hydrophilic surface pad layer 10 is 3 mm. Since the hydrophilic surface pad layer 10 is located on the surface layer of the composite insole 1, it can directly contact the soles of the human body during use, and the hydrophilic surface pad layer 10 has an appropriate thickness such as 2 ~ 4mm. Therefore, when the composite insole 1 is in use, the hydrophilic surface pad layer 10 can simultaneously have multiple functions such as shock absorption, average pressure release, moisture absorption and thermo absorbing, etc., which is sufficient. Makes the soles of the human body dry (hygroscopic) and cool (heat-absorbing).

In addition, a surface cloth 30 may be provided on the upper surface 11 of the hydrophilic surface cushion layer 10, and the surface cloth 30 is a breathable cloth surface, which is attached and pressed on the surface 11 of the hydrophilic surface cushion layer 10 It is provided as a contact surface for contacting the soles of the human body, so as to further improve the touch feeling of the soles of the human body when contacting the composite insole 1 and / or the aesthetic appearance of the composite insole 1. Since the surface cloth 30 is a breathable cloth surface, it does not affect the original shock absorption, average pressure release, moisture absorbing and thermo absorbing properties of the hydrophilic surface cushion layer 10 efficacy.

The underpad layer 20 is a foam layer formed by using PU (polyurethane) or EVA (Ethylene Vinyl Acetate). The thickness of the underpad layer 20 can be set to about 2 to 4mm but is not limited. In this embodiment, the underpad layer The thickness of 20 is 3 mm. The upper surface 21 of the bottom cushion layer 20 is pressed against the lower surface 12 of the hydrophilic surface cushion layer 10 to form a cushion body that cannot be easily separated. In addition, the bottom cushion layer 20 can be used as needed or A plurality of holes 23 are provided for the shape design. If the bottom cushion layer 20 is formed into a mesh structure (as shown in FIG. 2) but is not limited, the holes 23 may be punched. The operation is formed, that is, the underlayment layer 20 can be punched or not punched as required. The arrangement or distribution pattern of the holes 23 on the underlay layer 20 is not limited, and the holes 23 may be evenly or non-uniformly distributed on the underlay layer 20. As in this embodiment, the holes 23 are The bottom cushion layer 20 is evenly distributed, so that the bottom cushion layer 20 is shaped like a mesh structure. When the composite insole 1 of this embodiment is placed on the inner bottom surface of a shoe (not shown) for use, the lower surface 22 of the bottom cushion layer 20 fits the inner bottom surface of the shoe, and the holes 23 Each space formed can further provide a cushioning effect or a heat dissipation effect like an airbag.

Please refer to FIG. 6 at the same time. The manufacturing method of the composite insole 1 of the present invention includes the following steps:

Step 1: Hydrophilic PU (Polyurethane) foam is used to form a foam, and then the foam is cut into multiple sheets with a thickness for use as the hydrophilic surface cushion layer 10 (also It can be regarded as a semi-finished product of the surface cushion layer 40, as shown in FIG. 6); In addition, a breathable surface cloth 30 can be pasted on the surface 11 of the hydrophilic surface cushion layer 10, so that the surface cloth 30 and The hydrophilic surface cushion layer 10 is affixed and pressed to form a surface cushion layer semi-finished product 40.

Step 2: Use PU (polyurethane) or EVA (Ethylene Vinyl Acetate) foam to form a foam, and then cut the foam into multiple sheets with a thickness for use as the underlay layer 20 (also regarded as the underlay layer 20) An underlayer semi-finished product 50, as shown in FIG. 6); at this time, a plurality of holes 23 can be provided on the underlayer 20 as needed for use or design requirements, but not limited to form an underlayer semi-finished product 50; The holes 23 are formed by punching operations, but are not used to limit the present invention.

Step 3: The surface cushion semi-finished product 40 and the bottom cushion semi-finished product 50 are adhered to each other and pressed into a piece 60.

Step 4: Boring a molding die (not shown) to perform insole positioning on the sheet body 60 Shape operation to complete a semi-finished insole.

Step 5: After cutting or trimming, a composite insole 1 is completed.

In the manufacturing method of the composite insole 1 of the present invention, step 1 for forming a surface cushion semi-finished product 40 and step 2 for forming a bottom cushion semi-finished product 50 can be performed separately in the actual process, that is, The semi-finished product of the surface cushion layer 40 and the semi-finished product of the bottom cushion layer 50 can be separately manufactured at different locations, and there is no limitation on the order relationship between the two.

Compared with the prior art, the composite insole 1 of the present invention has the following advantages:

(1) Since the composite insole 1 of the present invention has a hydrophilic surface pad layer 10 of an appropriate thickness, it can directly produce shock absorption, average pressure release, moisture absorption, and heat absorption on the contact surface of the sole of the human body. (thermo absorbing) and other effects, it can achieve human body soles more dry (moisture absorption) and cooler (heat absorption) than conventional insoles.

(2) The thickness of the hydrophilic surface pad layer 10 of the present invention occupies a part of the overall thickness of the composite insole 1, so that the composite insole 1 can relatively reduce the hydrophilicity in the case of having the same degree of function and function Material cost of the surface cushion layer 10.

(3) With regard to the manufacturing method of the composite insole 1 of the present invention, steps 1 to 5 contained therein can be produced using related fixtures and molds, so it is beneficial to the amount of the composite insole 1 Industrialization can relatively increase the market competitiveness of products.

In addition, the preferred embodiments of the method for preparing the hydrophilic PU (Polyurethane) foam in the present invention are listed and their characteristics are described as follows:

Example 1: Preparation of hydrophilic PU foam:

<Composition ratio>

其中，表面活性劑B可為Pluronic 61、62、64或101(德國BASF公司產品)；或LK443，DC-198、DC504(美國AIR PRODUCTS公司產品)；或LH525、LK260(德國TH.Goldschmidt公司產品)等。

Among them, the surfactant B can be Pluronic 61, 62, 64 or 101 (products of German BASF company); or LK443, DC-198, DC504 (products of American AIR PRODUCTS company); or LH525, LK260 (products of German TH. Goldschmidt company) )Wait.

<Preparation method>

Step <1>: Provide a hydrophilic PU prepolymer; the PU prepolymer contains PEG 600 40% by weight and toluene diisocyanate (Toluene Diisocyanate (TDI)) 60% by weight; step <2> : Provide a molding mold; Step <3>: Mix the above raw materials according to the set weight ratio and inject it into the molding mold. The mold temperature is controlled between 30-50 ° C and the foam molding process is performed. The foaming time is about 5-10. Minutes; step <4>: after the foaming is completed, take out the foamed foamed molded body from the mold; step <5>: place the foamed molded body in an oven for high temperature baking operations, oven temperature Between about 50 and 100 ° C, the baking time depends on the size and weight of the object, ranging from a few tens of minutes to a few hours to achieve the dehydration effect and complete the process of foam products.

<Features> The physical properties of one of the foams (Surfactant B is Pluronic 61) are as follows:

Example 2: Preparation of hydrophilic PU foam:

<Composition ratio>

其中，表面活性劑A可為Brig 93(ICI America公司)或Emulgale 1000 NI(Henktel公司)等。表面活性劑B同實施例1。

Among them, the surfactant A may be Brig 93 (ICI America) or Emulgale 1000 NI (Henktel). Surfactant B is the same as in Example 1.

<Preparation method>

Step <1>: Provide a hydrophilic PU prepolymer; the PU prepolymer contains 50% by weight of PEG 400 and diphenylmethane-4,4'-diisocyanate (MDI ) 50% weight ratio; step <2>: provide a forming mold; Step <3>: Mix the above raw materials according to the set weight ratio, and inject them into the molding mold. The mold temperature is controlled between 30-50 ° C, and the foam molding process is performed. The foaming time is about 5-10 minutes. Step <4 >: After the foaming is completed, take out the foamed foamed molded body from the mold; step <5>: Place the foamed molded body in an oven for high temperature baking operation, the temperature of the oven is about 50 ~ 100 ℃ In between, the baking time depends on the size and weight of the object, ranging from a few tens of minutes to a few hours to achieve the dehydration effect and complete the foam product manufacturing process.

<Characteristics> The physical properties of one of the foams (Surfactant A may be Brig 93 and Surfactant B is Pluronic 61) are as follows:

Example 3: Preparation of hydrophilic PU foam:

<Composition ratio>

其中，表面活性劑A以及表面活性劑B同實施例二，聚醚多元醇A的分子量介於50~1000之間，但以50~400為佳，乙醚基(-EO-)含量在20~99.9%，但以50~85%為佳，其可為：PEG(Polyoxyethylene glycol)200、PEG 600或混合Ethylene glycol、Diethylene glycol、Propylene glycol或Glycerol等。氨催化劑I(amine catalyst I)可為Dabco 33LV、Dabco DMEA(美國AIR PRODUCTS公司產品)，氨催化劑Ⅱ(amine catalyst Ⅱ)可為：Dabco BL-11、Dabco BL-19、Dabco BL-22(美國AIR PRODUCTS公司產品)；ZF-20、ZR-70、DMP(美國HUNTSMAN公司產品)

Among them, the surfactant A and the surfactant B are the same as those in Example 2. The molecular weight of the polyether polyol A is between 50 and 1,000, but preferably 50 to 400, and the content of ether group (-EO-) is 20 to 99.9%, but preferably 50-85%, it can be: PEG (Polyoxyethylene glycol) 200, PEG 600 or mixed Ethylene glycol, Diethylene glycol, Propylene glycol or Glycerol. Ammonia catalyst I can be Dabco 33LV, Dabco DMEA (product of American Air Products), and amine catalyst II can be Dabco BL-11, Dabco BL-19, Dabco BL-22 (USA AIR PRODUCTS company products); ZF-20, ZR-70, DMP (American HUNTSMAN company products)

<Preparation method>

Step <1>: Provide a hydrophilic PU prepolymer; the PU prepolymer contains polypropylene 40, 40% by weight and toluene diisocyanate (Toluene Diisocyanate, TDI) 60% by weight; step <2 >: Provide a molding mold; Step <3>: Mix the above raw materials according to the set weight ratio and inject it into the molding mold. The mold temperature is controlled between 30 ~ 50 ° C and the foaming process is performed. The foaming time is about 5 ~ 10 minutes; step <4>: after the foaming is completed, take out the foamed foamed molded body from the mold; step <5>: place the foamed molded body in an oven for high temperature baking operation, oven Temperature about 50 Between ~ 100 ° C, the baking time depends on the size and weight of the object, ranging from several tens of minutes to several hours to achieve the dehydration effect and complete the process of foam products.

<Features>

The foam is softer than the second embodiment, but has a small disadvantage of shrinking in size. The rebound time can be adjusted between 1 ~ 10 seconds.

Example 4: Preparation of hydrophilic PU foam:

<Composition ratio>

其中，表面活性劑A以及表面活性劑B同實施例二，聚醚多元醇B是分子量介於50~1000之間，但以50~400為佳，乙醚基(-EO-)含量在20~99.9%，但以50~85%為佳，其可為：PEG 300或混合Ethylene glycol，Diethylene glyco，Propylene glycol或Glycerol等。氨催化劑I、氨催化劑Ⅱ同實施例三。

Among them, Surfactant A and Surfactant B are the same as in Example 2. Polyether polyol B has a molecular weight between 50 and 1,000, but preferably between 50 and 400, and the content of ether group (-EO-) is between 20 and 99.9%, but preferably 50-85%, it can be: PEG 300 or mixed Ethylene glycol, Diethylene glyco, Propylene glycol or Glycerol. The ammonia catalyst I and ammonia catalyst II are the same as those in the third embodiment.

<Preparation method>

Step <1>: Provide a hydrophilic PU prepolymer; the PU The prepolymer contains 70% by weight of polyethylene glycol 200 and 30% by weight of Isophorone Diisocyanate (IPDI); Step <2>: Provide a molding die; Step <3>: Set the above raw materials according to the settings The weight ratio is mixed and injected into the molding mold. The mold temperature is controlled between 30-50 ° C. The foam molding process is performed. The foaming time is about 5-10 minutes. Step <4>: After the foaming is completed, Take out the foamed foam molded body; step <5>: Place the foam molded body in an oven for high-temperature baking operation, the oven temperature is about 50 ~ 100 ℃, the baking time depends on the size of the object and It depends on the weight, ranging from a few tens of minutes to a few hours to achieve the dehydration effect and complete the foam product manufacturing process.

<Features>

The softness of the foam is the same as that of the third embodiment, there is no size shrinkage at all, the deformation rate is low, and the rebound time can be adjusted between 1 to 10 seconds. Its physical properties are as follows:

Example 5: Preparation of hydrophilic PU foam

<Composition ratio>

其中，表面活性劑A以及表面活性劑B同實施例二，聚醚多元醇C係分子量介於50~1000之間，但以50~400為佳，乙醚基(-EO-)含量在20~99.9%，但以50~85%為佳，其可為：PEG 400或混合Ethylene glycol，Diethylene glycol，Propylene glycol或Glycerol等。氨催化劑I、氨催化劑Ⅱ同實施例三。

Among them, the surfactant A and the surfactant B are the same as those in Example 2. The molecular weight of the polyether polyol C is between 50 and 1,000, but preferably 50 to 400, and the content of ether group (-EO-) is 20 to 99.9%, but preferably 50 ~ 85%, it can be: PEG 400 or mixed Ethylene glycol, Diethylene glycol, Propylene glycol or Glycerol. The ammonia catalyst I and ammonia catalyst II are the same as those in the third embodiment.

<Preparation method>

Step <1> Provide a hydrophilic PU prepolymer; the PU prepolymer contains a polypropylene glycol 600 50% by weight and a toluene diisocyanate (TDI) 50% by weight; step <2> Provide a molding mold; step <3> mix the above raw materials according to the set weight ratio and inject it into the molding mold, control the mold temperature between 30-50 ° C, and perform the foam molding process with a foaming time of about 5-10 minutes; Step <4> After the foaming is completed, take out the foamed foamed molded body from the mold; step <5> Place the foamed molded body in the oven for high temperature baking operation, the temperature of the oven is about 50 ~ 100 Between ℃, the baking time depends on the size and weight of the object, ranging from a few tens of minutes to a long time Hours to achieve the dehydration effect, and complete the process of foam products.

<Features>

The softness of the foam is the same as that of the third embodiment, there is no size shrinkage at all, the deformation rate is low, and the rebound time can be longer, about 1 to 20 seconds.

Example 6: Preparation of hydrophilic PU foam

<Composition ratio>

其中，原料的選擇同上述實施例一至五。

The selection of raw materials is the same as that of the first to fifth embodiments.

<Preparation method>

Step <1> Provide a hydrophilic PU prepolymer; the PU prepolymer contains polypropylene 60, 60% by weight and 40% by weight of Isophorone Diisocyanate (IPDI); steps <2> Provide molding dies; Step <3> The above raw materials are mixed according to a set weight ratio and injected into a molding mold, and the mold temperature is controlled between 30 to 50 ° C, and a foam molding process is performed, and the foaming time is about 5 to 10 minutes; step <4> After the foaming is completed, take out the foamed foamed molded body from the mold; step <5> put the foamed molded body in an oven for high temperature baking operation, the temperature of the oven is about 50 ~ 100 ℃, The baking time depends on the size and weight of the object, ranging from a few tens of minutes to a few hours to achieve the dehydration effect and complete the foam product manufacturing process.

<Features>

The softness of the foam is the same as that of the third embodiment, there is no size shrinkage at all, the deformation rate is low, and the rebound time is 1 to 10 seconds.

Example 7: Preparation of hydrophilic PU foam

<Composition ratio>

其中，原料的選擇同上述實施例一至五。

The selection of raw materials is the same as that of the first to fifth embodiments.

<Preparation method>

Step <1> Provide a hydrophilic PU prepolymer; the PU prepolymer contains 300% by weight of polypropylene glycol 300 and 60% by weight of toluene diisocyanate (Toluene Diisocyanate; TDI); step <2> Provide a molding mold; step <3> mix the above raw materials according to the set weight ratio and inject it into the molding mold, control the mold temperature between 30-50 ° C, and perform the foam molding process with a foaming time of about 5-10 minutes; Step <4> After the foaming is completed, take out the foamed foamed molded body from the mold; step <5> Place the foamed molded body in the oven for high temperature baking operation, the temperature of the oven is about 50 ~ 100 Between ℃, the baking time depends on the size and weight of the object, ranging from several tens of minutes to several hours to achieve the dehydration effect and complete the process of foam products.

<Features>

The softness of the foam is the same as that of the third embodiment, there is no size shrinkage at all, the deformation rate is low (low resistance under pressure), and the rebound time is 1 to 10 seconds.

The above descriptions are merely preferred embodiments of the present invention, and are only illustrative, not restrictive, for those skilled in the art. Those skilled in the art understand that they can be modified within the spirit and scope defined by the claims of the present invention. Many changes, modifications, and even equivalent changes will be made, but all will fall into the protection scope of the present invention.

1‧‧‧ composite insole

10‧‧‧ hydrophilic surface cushion

11‧‧‧ top surface

12‧‧‧ lower surface

20‧‧‧ Underlay

21‧‧‧ Top surface

22‧‧‧ lower surface

23‧‧‧ Hole

30‧‧‧ face cloth

Claims (10)

A composite insole includes: a hydrophilic surface cushion layer, which is made of a foam layer made of hydrophilic PU (polyurethane); and a bottom cushion layer, which is made of PU (polyurethane) or The foam layer made of EVA (Ethylene Vinyl Acetate) is made, and the upper surface of the bottom cushion layer is adhered to the lower surface of the hydrophilic surface cushion layer to be integrated. The composite insole according to claim 1, wherein the foam system used to form the hydrophilic surface cushion layer uses 40 to 60% by weight of a hydrophilic PU prepolymer and an acrylic emulsion polymer (Acrylic Emulsion polymer). ) 10-20%, and polyether polyols 5-20%, as the main constituents of the foaming element; wherein the polyether polyol contains the appropriate proportion of water, surfactant, ammonia catalyst composition; and The PU prepolymer contains 40 to 70% of polyether polyol and 30 to 60% of isocyanate, and the molecular weight of the polyether polyol contained in the PU prepolymer is between 50 and 2000, and at least 40 mole% or more Ether group (-EO-), and the content of ether group (-EO-) is 20 ~ 99.9%; and the CO ₂ produced by the interaction of the isocyanate with a large amount of water can be used as a foaming agent, and the foam is formed. The composite insole according to claim 2, wherein the polyether polyol in the main constituent of the foaming element can further add 0 to 20% of jelly powder (micro encapsulated specific melting point material), where the The jelly powder may be a powdered material coated with a melamine resin having a melting point of 28.3 ° C. The composite insole according to claim 1, wherein the bottom cushion layer is further provided with a plurality of holes. The composite insole according to claim 4, wherein the plurality of holes are distributed uniformly or non-uniformly. On the underlay. The composite insole according to claim 1, wherein a breathable surface cloth is further attached to the upper surface of the hydrophilic surface cushion layer and pressed to form a semi-finished surface cushion layer. The composite insole according to claim 1, wherein the thickness of the hydrophilic surface cushion layer is 2 to 4 mm, and the thickness of the bottom cushion layer is 2 to 4 mm. A method for manufacturing a composite insole, which is used to manufacture the composite insole according to any one of claim 1 to claim 7, including the following steps: providing a PU PU polymer (hydrophilic PU prepolymer); The polymer contains 40 to 70% by weight of polyether polyol and 30 to 60% by weight of isocyanate, and the molecular weight of the polyether polyol contained in the PU prepolymer is between 50 and 2000, and at least 40 mole% or more Ether-group (-EO-), and the content of ether-group (-EO-) is 20 to 99.9% by weight; a molding mold is provided; 40 to 60 parts by weight of the PU prepolymer prepared as described above and high acrylic emulsification Molecular compounds (Acrylic Emulsion polymer) 9 to 20 parts by weight as the main constituents of the foaming raw materials; the constituents of the foaming raw materials also contain 0 to 25 parts by weight of polyether polyols and 0 to 30 parts by weight of water 、 Surface active agent 0 ~ 25 parts by weight, ammonia catalyst 0 ~ 1 part by weight and jelly powder 0 ~ 20 parts by weight. The raw materials are mixed according to the set weight ratio and injected into the molding mold. The mold temperature is controlled between 30-50 ° C. ， Foam molding process, foaming time is about 5 ~ 10 minutes After the foaming is completed, take out the foamed foam molded body from the mold; place the foam molded body in the oven for high temperature baking operation, the oven temperature is about 50 ~ 100 ℃, the baking time It depends on the size and weight of the object, ranging from tens of minutes to several hours to achieve dehydration effect and complete the process of hydrophilic foam; A hydrophilic body is formed by using hydrophilic PU (Polyurethane) foam, and then cut into a plurality of sheets having a thickness for use as the hydrophilic surface mat layer, so that each sheet forms a surface mat layer Semi-finished product; use PU (polyurethane) or EVA (Ethylene Vinyl Acetate) foam to form a foam body, and then cut into a number of sheets with a thickness for the underlay layer, so that each sheet forms an underlay layer Semi-finished product; the surface cushion semi-finished product and the bottom cushion semi-finished product are adhered to each other to be connected into a piece; the mold is used to shape the piece to complete an insole shape; Operation to complete a composite insole. The method for manufacturing a composite insole according to claim 8, wherein a breathable surface cloth is further attached to the upper surface of the sheet serving as the hydrophilic surface cushion layer, and then the surface cushion layer semi-finished product is formed by pressing. The method for manufacturing a composite insole according to claim 8, wherein a plurality of holes are further provided in the sheet serving as the bottom pad layer.