CN1795776A - Articles of footwear with thermal insulation - Google Patents

Abstract

The invention relates to a cold-proof and heat-insulating footwear, comprising at least a porous material layer and a packaging layer, wherein the porous material layer has a surface area corresponding to the shoe part, the packaging layer is made of high-air-resistance thermoplastic plastic material, covers the outer surface of the porous material layer, and is provided with an inner side sheet, an outer side sheet, a sealing chamber formed by the inner side sheet and the outer side sheet, and an opening communicated with the sealing chamber, and the sealing chamber of the packaging layer is vacuumized and sealed by the opening to form a vacuum bag body. The invention can greatly reduce the conduction, convection and radiation effects of temperature, ensure the heat insulation effect, effectively reduce the volume of the whole cold-proof heat insulation unit after vacuumization, meet the requirement of lightness and thinness of heat insulation materials, and do not affect the movement of a wearer.

Description

Articles of footwear with thermal insulation

technical field

The present invention relates to a kind of article for shoes, in particular to a kind of article of footwear with a cold-proof and heat-insulating device.

Background technique

At present, the thermal insulation materials used in footwear (such as soles, insoles, and uppers) are mainly fiber-based, such as thermal insulation cotton and glass fiber cotton, but this type of thermal insulation material only has the effect of heat storage and heat preservation. Under the low-temperature environment, it is still impossible to block the loss of heat energy due to conduction, convection, and radiation effects. Therefore, we can only increase its thickness to reduce the loss of heat energy. The relative size of the entire shoe will become larger and heavier. The wearer is considerably hindered in movement.

The other is to combine thermal insulation cotton with a layer of aluminum foil in a needle-punched manner, in an attempt to reduce the heat radiation effect by virtue of the metal reflectivity of the aluminum foil, but this structure still cannot reduce the heat conduction and heat convection effects, and its warmth retention effect is not good. ideal.

U.S. Patent No. 6,065,227 discloses a kind of waterproof footwear, which is to combine a layer of shoe covers made of waterproof and breathable (wet) materials in the middle of the upper and the inner liner by sewing, although the waterproof lining can be used Block the water on the outside of the shoe, but in extremely cold climates, when the low temperature from the outside is transferred to the inside of the shoe at a higher temperature, the waterproof lining made of waterproof and breathable membrane will expand due to thermal expansion and contraction In this way, the temperature difference between the inside and outside of the shoe is large, and condensation occurs inside the shoe, while the cold air outside is due to heat convection. , heat conduction, and heat radiation will gradually penetrate into the shoes, and the condensed water accumulated in the shoes will gradually form condensation and freezing due to the continuous low-temperature conduction outside the shoes, causing the entire pair of shoes to lose their heat preservation function.

In addition, China Taiwan Patent No. 349,854 discloses a shoe with a shoe inner boot. The shoe inner boot is mainly made of EVA or PU material on the upper and lower surfaces of the elastic block, and then laminated with a layer of cloth. (or insulation cotton) covering parts, then cut and sewed into a shoe shape, so that the inner boot plug of the shoe is placed in a shoe, and tightly covers the foot to reduce the external cold air convection to the inside of the shoe to achieve the effect of heat preservation. Although this kind of shoe inner boot has a certain heat preservation effect, it still cannot completely block the gradual loss of temperature and freezing in the shoe due to the effects of heat conduction, heat convection, and heat radiation. situation.

To sum up, the above-mentioned thermal insulation materials for shoes are still not suitable for regions with relatively severe climates. A thermal insulation shoe article (material) that can prevent the internal temperature loss of shoes is urgently awaiting the development of breakthroughs.

Contents of the invention

The purpose of the present invention is to relate to a kind of footwear with a cold-proof and heat-insulating device which is light in weight, small in size, and has good heat insulation effect.

Therefore, the article of footwear with cold and heat insulation device of the present invention comprises at least one porous material layer and an encapsulation layer.

The layer of porous material has a surface area which is adapted to the desired surface area of the shoe component.

The encapsulation layer is made of high gas resistance and thermoplastic material, which is coated on the outer surface of the porous material layer, and has an inner sheet, an outer sheet, and a frame composed of the inner and outer sheets. The sealing chamber, and an opening communicating with the sealing chamber, after applying vacuum to the sealing chamber of the packaging layer and sealing the opening, the packaging layer forms a vacuum capsule.

In the article of footwear with a cold-proof and heat-insulating device according to the present invention, the porous material layer is made into a pad consistent with the foot.

The article of footwear with a cold-proof and heat-insulating device of the present invention further includes at least one foam layer, and the foam layer is attached to the bottom surface or the top surface of the encapsulation layer.

The footwear article with the cold-proof and heat-insulating device of the present invention further includes at least one heat-insulating layer, and the heat-insulating layer is attached to one of the outer surfaces of the foam layer.

In the article of footwear with a cold-proof and heat-insulating device according to the present invention, the encapsulating layer is made of nylon, polyethylene, thermoplastic urethane, polyethylene terephthalate, polyvinyl alcohol and polyacrylonitrile. A film made of a combination of one or more than one material.

In the footwear article with cold-proof and heat-insulating device of the present invention, the cold-proof and heat-insulating unit further includes two radiation-heat-resistant layers sandwiched between the inner and outer sheets and the encapsulating layer, and the radiation-heat-resistant layers can Made of aluminum foil with low thermal conductivity.

In the footwear with cold-proof and heat-insulating devices according to the present invention, the porous material layer is one of polyurethane, polyester cotton, glass fiber cotton, open-cell polyethylene, and open-cell ethylene-vinyl acetate copolymer. , or any combination of the above.

In the article of footwear with a cold-proof and heat-insulating device of the present invention, the porous material layer is made into a honeycomb structure.

The article of footwear with a cold-proof and heat-insulating device of the present invention is made of a shoe cover that is inserted into a shoe.

The present invention further provides a footwear article with a cold-proof and heat-insulating device, comprising a sole unit, and a cold-proof and heat-insulation unit, the cold-proof and heat-insulation unit is arranged on the sole unit, has at least one porous material layer, and An encapsulation layer covering the porous material layer and having a vacuum state inside.

The article of footwear with a cold-proof and heat-insulating device of the present invention further includes at least one heat-insulating layer, and the heat-insulating layer is attached to one side of the encapsulation layer.

According to the footwear article with cold and heat insulation device of the present invention, the cold and heat insulation unit further has two radiation and heat blocking layers sandwiched between the porous material layer and the encapsulation layer respectively.

In the footwear article with cold-proof and heat-insulating device of the present invention, the porous material layer is made of one of polyurethane, polyester cotton, glass fiber cotton, open-cell polyethylene, and open-cell ethylene-vinyl acetate copolymer. species, or any combination of more than one.

In the article of footwear with a cold-proof and heat-insulating device of the present invention, the radiation-heat-resistant layer is made of aluminum foil.

The present invention also provides a footwear article with a cold-proof and heat-insulating device, which includes a vamp unit and a cold-proof and heat-insulation unit. a connected inner surface material, and a top opening at the top edge of the inner and outer surface materials; the cold-proof and heat-insulating unit is sandwiched between the outer surface material and the inner surface material, and has at least one porous material layer, and An encapsulation layer covering the porous material layer and having a vacuum state inside.

The article of footwear with a cold-proof and heat-insulating device of the present invention further includes a sole attached to the bottom of the upper unit.

In the footwear article with cold-proof and heat-insulating device according to the present invention, the cold-proof and heat-insulation unit further has two radiant heat-resistant layers sandwiched between the porous material layer and the encapsulation layer, and the radiant-heat resistant layers are made of aluminum foil. become.

In the footwear article with cold-proof and heat-insulating device of the present invention, the porous material layer is made of one of polyurethane, polyester cotton, glass fiber cotton, open-cell polyethylene, and open-cell ethylene-vinyl acetate copolymer. species, or any combination of more than one.

The invention can greatly reduce the conduction, convection and radiation effects of temperature, prevent the temperature inside the shoe from being lost, and prevent the external low temperature from being transmitted into the shoe, thus ensuring the effect of heat insulation. And the entire cold-proof and heat-insulating unit is effectively reduced in volume after being vacuumized, which meets the requirements of light and thin insulation materials without affecting the activities of the wearer.

Description of drawings

Fig. 1 is a three-dimensional exploded view illustrating a first preferred embodiment of an article of footwear with a cold-proof and heat-insulating device of the present invention;

Fig. 2 is a combined sectional view of Fig. 1;

Fig. 3 is a combined sectional view illustrating that a cold-proof and heat-insulating unit is arranged at the bottom of an insole;

Fig. 4 is a combined sectional view illustrating the cold-proof and heat-insulating unit pasted with a cloth surface and a foam layer;

Fig. 5 is a combined sectional view similar to Fig. 2, illustrating that the cold-proof and heat-insulating unit is provided with an insulating layer;

Fig. 6 is a perspective view illustrating that the second preferred embodiment of the present invention is applied to a shoe inner boot;

Fig. 7 is a partially assembled cross-sectional view illustrating one of the shell parts and a bottom plate of the inner boot;

Fig. 8 is a partially combined sectional view illustrating that the third preferred embodiment of the present invention is applied to a shoe generally having a sole unit and an upper;

Fig. 9 is a partial combined sectional view illustrating that the fourth preferred embodiment of the present invention is applied to the upper of a shoe;

Figure 10 is a partially enlarged view of Figure 9;

Fig. 11 is a partial combined cross-sectional view, illustrating that the fourth preferred embodiment of the present invention is applied to the upper and the sole;

Fig. 12 is a partially assembled sectional view illustrating that the fourth preferred embodiment of the present invention is applied to a shoe inner liner.

Detailed ways

As shown in Fig. 1 and Fig. 2, the first preferred embodiment of the article of footwear with the cold-proof and heat-insulating device of the present invention has a cold-proof and heat-insulating unit 100, which includes at least one porous material layer 1, two radiation-blocking A thermal layer 2, and an encapsulation layer 3.

The porous material layer 1 has a surface area conforming to the sole of the foot, and is made of a porous elastic material. In this embodiment, it is best made of open-cell polyurethane (PU). , and the inside of the material is mixed with molecular sieve with hygroscopic effect and activated carbon for eliminating peculiar smell. The internal air chamber 12 (in the figure, its pores are enlarged to facilitate the labeling) to prevent the conduction of its internal heat energy (stagnation of air). In addition, the porous material layer 1 is better to use a black base material to reduce heat conduction coefficient, and reduce the temperature loss due to radiative heat conduction.

The above-mentioned radiant heat blocking layer 2 is attached to the top and bottom surfaces 13, 14 of the porous material layer 1 respectively, and is made of a metal film with high reflection and high gas resistance (such as aluminum foil) to reduce the heat radiation conduction effect.

The encapsulation layer 3 is made of high air resistance and thermoplastic material, such as nylon (NYLON), polyethylene (PE), thermoplastic urethane (TPU), polyethylene terephthalate (PET), polyvinyl alcohol Polyvinyl Alcohol (PVA) and polyacrylonitrile (PAN), or a high gas barrier laminated film (Laminated Film) made of more than one material, which is a package Cover the outer surface of the porous material layer 1, and have an inner sheet 31, an outer sheet 32, a sealed chamber 33 formed by the inner and outer sheets 31, 32, and an opening communicating with the sealed chamber 33 34. In this embodiment, the encapsulation layer 3 is sealed around the edges by the inner and outer sheets 31 and 32 of the upper and lower layers to form a hollow film bag, so that the porous material layer 1 can be placed through the opening 34. In its sealed chamber 33.

After the porous material layer 1 and the radiant heat-resistant layer 2 are placed in the sealed chamber 33, the sealed chamber 33 of the encapsulation layer 3 is evacuated by a vacuum pump (not shown), and finally the high-frequency welding method (or vacuum Encapsulation machine) seals the opening 34, so that the encapsulation layer 3 forms an airtight vacuum capsule.

As shown in Figure 3, the above-mentioned cold-proof and heat-insulating unit 100 is placed at the bottom of the insole as a heat-resistant material, or as shown in Figure 4, a layer of cloth 4 is directly attached to the top surface 101, and a layer of cloth is attached to the bottom surface 102. The foam layer 5 is used to directly form a shoe-pad, and the foam layer 5 is made of an elastic foam material with elasticity or shock absorption, such as EVA (ethylene-vinyl acetate copolymer), PU, TPU or the like, to provide better elasticity.

When the insole is placed in the shoe, because the inside of the encapsulation layer 3 is in a vacuum state, in the space that is not conducive to gas flow, it can effectively prevent heat conduction and heat convection effects, and the heat-resistant layer 2 of the middle layer can effectively Blocking the effect of heat radiation, plus the porous material layer 1 made of open-cell (i.e. air chamber 12) foaming material, can reduce the contact area with the radiation heat-resistant layer 2, so as to effectively reduce the conduction of heat energy inside the material And the convection effect, therefore, when applied to shoes, it can prevent the external low temperature from being transmitted to the sole (inside), and the heat inside the shoe cannot be lost, achieving a good heat insulation effect.

As shown in Figure 5, in this embodiment, an insulation layer 50 is added above the insole, and the insulation layer 50 is made of foam material (insulation cotton) and is attached to one side of the encapsulation layer 3 to increase the storage capacity of the shoe. Thermal insulation effect.

As shown in Figure 6 and Figure 7, it is the second preferred embodiment of the present invention, mainly used as a shoe inner boot 6, in this embodiment, the shoe inner boot 6 is composed of a left shell part 61, a right Shell part 62 and a bottom plate 63 are combined, and the left and right shell parts 61, 62 and the bottom plate 63 respectively have the same cold-proof and heat-insulating unit 100 as the first embodiment, and further include a The foam layer 5 on the encapsulation layer 3 is consolidated and molded at the joint by general peripheral sewing or gluing (in this example, it is fixed by the above gluing method), so that the shoe inner boot after being inserted into the shoe, In this way, the effect of heat insulation and cold protection can be achieved.

As shown in FIG. 8 , the third preferred embodiment of the present invention is used as a thermal insulation material for shoe soles, which includes a shoe sole unit 7 and a cold-proof and heat-insulation unit 100 .

The sole unit 7 has a groove 72 formed on a top surface 71 .

The cold-proof and heat-insulating unit 100 is the same as the first embodiment, it is accommodated in the groove 72 of the sole unit 7, and has at least one porous material layer 1, two radiation-resistant radiation barriers attached to the outer surface of the porous material layer 1. The thermal layer 2 and an encapsulation layer 3 which is wrapped on the porous material layer 1 and has a vacuum state inside.

It is worth mentioning that, in this embodiment, a vamp 70 is connected above the sole unit 7 to form a complete finished shoe.

As shown in FIG. 9 and FIG. 10 , the fourth preferred embodiment of the present invention is applied to making a shoe upper, which includes a vamp unit 8 and a cold-proof and heat-insulating unit 100 .

The vamp unit 8 has an outer surface material 81 that surrounds the outer circumference and is open at the top and bottom, an inner surface material 82 (commonly known as the inner lining) that is sewn with the outer surface material 81 at the bottom edge, and an inner surface material 82 that is closed on the inner and outer surfaces. The bottom pad 83 at the lower opening end of the material 81, 82, and a sandwich space 84 formed between the inner and outer surface materials 82, 81.

The cold-proof and heat-insulating unit 100 has a surface area matching the sandwiched space 84 , which is installed in the sandwiched space 84 of the upper unit 8 by peripheral sewing or gluing, and has at least one porous material layer 1 , two radiant heat resistance layers 2 and an encapsulation layer 3 wrapped on the outside of the porous material layer 1 and in a vacuum state inside.

Furthermore, as shown in Figure 11, the bottom pad 83 of the upper unit 8 can also be made with the same structure as the cold-proof and heat-insulating unit 100, so that the entire finished upper can achieve a better heat preservation effect; or As shown in FIG. 12, the cold-proof and heat-insulating unit 100 extends from the top edge of the inner and outer surface materials 82, 81 toward the lower open end, and forms a closed lower open end to form a shoe-shaped liner.

Through the above description, compared with the existing heat-insulating shoe materials, the footwear article with cold-proof and heat-insulating device of the present invention has many functions and advantages, which are summarized as follows:

1. The present invention utilizes the porous material layer 1, whose internal pores form countless heat-resistant spaces, and the cold-proof and heat-insulating unit 100 formed by covering the encapsulation layer 3 and applying vacuum treatment can greatly reduce the temperature conduction, Convection and radiation effects, therefore, the footwear manufactured by using the cold-proof and heat-insulating unit 100 can not only prevent the temperature inside the shoe from losing outward, but also prevent the low temperature from outside from being transmitted into the shoe, thus ensuring the heat insulation effect.

2. The entire cold-proof and heat-insulating unit 100 is effectively reduced in volume after being vacuumized, meeting the requirement of thinner and lighter heat-insulating materials, without affecting the activities of the wearer.

Claims (18)

1. An article of footwear with a cold-proof and heat-insulating device, having at least one cold-proof and heat-insulating unit, the cold-proof and heat-insulating unit comprising at least one porous material layer and an encapsulation layer, characterized in that: the layer of porous material having a desired surface area for the shoe component; The encapsulation layer is made of high gas resistance and thermoplastic material, which is coated on the outer surface of the porous material layer, and has an inner sheet, an outer sheet, and a sheet composed of the inner and outer sheets. a sealed chamber, and an opening communicating with the sealed chamber, after applying vacuum to the sealed chamber of the encapsulation layer and sealing the opening, the encapsulation layer forms a vacuum capsule. 2. The article of footwear with a cold-proof and heat-insulating device as claimed in claim 1, characterized in that: the porous material layer is made as a pad conforming to the foot. 3. The article of footwear with a cold-proof and heat-insulating device as claimed in claim 1, further comprising at least one foam layer, and the foam layer is attached to the bottom surface or the top surface of the encapsulation layer. 4. The article of footwear with a cold-proof and heat-insulating device as claimed in claim 3, further comprising at least one heat-insulating layer, and the heat-insulating layer is attached to one of the outer surfaces of the foam layer. 5. The article of footwear with a cold-proof and heat-insulating device as claimed in claim 1, wherein the encapsulation layer is made of nylon, polyethylene, thermoplastic urethane, polyethylene terephthalate, A film made of one or more of polyvinyl alcohol and polyacrylonitrile. 6. The article of footwear with a cold-proof and heat-insulating device as claimed in claim 1, wherein the cold-proof and heat-insulating unit further includes two radiation heat-resistant heat-resisting elements sandwiched between the inner and outer sheets and the encapsulation layer, respectively. Layer, the radiation heat-resistant layer can be made of aluminum foil with low thermal conductivity. 7. The footwear article with cold-proof and heat-insulating device according to claim 1, characterized in that: the porous material layer is polyurethane, polyester cotton, glass fiber cotton, open-cell polyethylene, open-cell polyethylene - made of one of the vinyl acetate copolymers, or a combination of any of the above. 8. The article of footwear with a cold-proof and heat-insulating device as claimed in claim 1, wherein the porous material layer is made into a honeycomb structure. 9. The article of footwear with cold-proof and heat-insulating device as claimed in claim 1, characterized in that: the article is a shoe cover that is inserted into a shoe. 10. A footwear article with a cold-proof and heat-insulating device, comprising a sole unit and a cold-proof and heat-insulating unit, characterized in that: the sole unit; The cold-proof and heat-insulating unit is arranged on the sole unit, and has at least one porous material layer, and an encapsulation layer wrapped outside the porous material layer and in a vacuum state inside. 11. The article of footwear with a cold-proof and heat-insulating device as claimed in claim 10, further comprising at least one heat-insulation layer attached to one side of the encapsulation layer. 12. The article of footwear with a cold-proof and heat-insulating device as claimed in claim 10, wherein the cold-proof and heat-insulation unit further has two radiation and heat-resistant layers sandwiched between the porous material layer and the encapsulation layer. 13. The footwear article with cold and heat insulation device according to claim 10, characterized in that: the porous material layer is made of polyurethane, polyester cotton, glass fiber cotton, open-cell polyethylene, open-cell One of ethylene-vinyl acetate copolymers, or a combination of more than one. 14. The article of footwear with a cold-proof and heat-insulating device as claimed in claim 12, characterized in that: the radiation and heat-blocking layer is made of aluminum foil. 15. A footwear article with a cold-proof and heat-insulating device, comprising a shoe upper unit and a cold-proof and heat-insulating unit, characterized in that: The upper unit has an outer surface material surrounding the outer periphery, an inner surface material joined to the outer surface material, and a top opening at the top edges of the inner and outer surface materials; The cold-proof and heat-insulating unit is sandwiched between the outer surface material and the inner surface material, and has at least one porous material layer, and an encapsulation layer wrapped outside the porous material layer and in a vacuum state inside. 16. The article of footwear with a cold-proof and heat-insulating device as claimed in claim 15, further comprising an outsole attached to the bottom of the upper unit. 17. The article of footwear with a cold-proof and heat-insulating device as claimed in claim 15, wherein the cold-proof and heat-insulating unit further has two heat-resistant radiation layers interposed between the porous material layer and the encapsulation layer, The radiant heat resistance layer is made of aluminum foil. 18. The footwear article with cold and heat insulation device according to claim 15, characterized in that: the porous material layer is made of polyurethane, polyester cotton, glass fiber cotton, open-cell polyethylene, open-cell One of ethylene-vinyl acetate copolymers, or a combination of more than one.

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