JP2002000399A - Material for cushion cover and part for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a material for a cushion cover which can be used comfortably as it has a thermal storage property, does not get sticky for hours, and avoids getting too hot or too cold, and to provide a material for parts of a vehicle which increase comfort inside of the vehicle by keeping the temperature of the parts of the vehicle and of inside of the vehicle controlled with an air conditioner for relatively long hours after the air conditioner is turned off. SOLUTION: A material for a cushion cover is provided with a basic material such as a polyurethane foam or a synthetic leather in which microcapsules containing shells with a latent heat storage agent are dispersed. A material for parts of the vehicle such as a steering wheel is provided with a basic material such as a synthetic resin in which microcapsules containing shells with a latent heat storage agent are dispersed. The heat storage agent should change its phases at the temperature between 6 and 35 Centigrade.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to cover cushions for automobile seat covers, office chair cover cushions, child seat cover cushions, stroller cover cushions, seat chair cover cushions, wheelchair cover cushions, and the like. And cover materials for vehicles such as automobile cover cushions, cushions, handles, dashboards, ceiling materials, floor materials, door lining materials, and glass. The present invention relates to a material and a vehicle member.

[0002]

2. Description of the Related Art Conventional cushion materials for various cushions are intended to improve sitting comfort, comfort, etc., and include urethane foam with fabric, fabric alone, leather (synthetic and natural), towels, and bamboo products. Etc. have been used.

On the other hand, air conditioners such as coolers and heaters are used for adjusting the temperature in the cabin of an automobile.

[0004]

If the body is in contact with such a conventional cover cushion material for a long time, it may become stuffy or hot.

On the other hand, since the operation of an air conditioner of an automobile is stopped at the same time as the engine is stopped, the temperature in the vehicle interior changes to a temperature close to the outside air temperature in a very short time. For this reason, the interior of an automobile parked outdoors has a room temperature equivalent to the outside temperature in a very short time, and is extremely cold in winter and very humid in summer. In addition, the steering wheel, dashboard, ceiling material, flooring material, and seats inside the vehicle cabin become hot or cold due to the influence of the outside temperature and sunlight, and especially the cover cushion material of the car seat becomes abnormally hot. And may get cold.

The present invention solves the above-mentioned conventional problems, and has a heat storage property, and does not become stuffy or hot even when it is in contact with the body for a long time, or it becomes excessively hot or cold. An object of the present invention is to provide a cover cushion material that is difficult to be worn.

The present invention also has a heat storage property and is hardly affected by the outside air temperature, so that the room temperature of the vehicle interior controlled by the air conditioner as well as the vehicle member itself can be compared even after the air conditioner is stopped. Can be maintained for a long time,
It is an object of the present invention to provide a vehicle member that can enhance comfort in a vehicle cabin.

[0008]

Means for Solving the Problems The cover cushion material of the present invention is a cover cushion material at least partially constituted by a temperature adjusting material, wherein the temperature adjusting material is dispersed in the base material. And heat storage particles.

The vehicle member according to the present invention is a vehicle member having at least a part formed of a temperature adjusting material, wherein the temperature adjusting material includes a base material, and heat storage particles dispersed in the base material. Is characterized by containing.

The heat storage particles have a relatively large heat absorbing and dissipating capacity. By dispersing the heat storing particles in a base material, a cover cushion material and a vehicle member having a relatively large heat absorbing and dissipating capacity can be obtained.

As the heat storage particles, microcapsules containing a latent heat storage agent in a shell are preferable. This latent heat storage agent usually exerts an endothermic effect (or a radiating effect) by utilizing a liquid-solid phase change, and has a relatively large endothermic capacity. And when using a latent heat storage agent of a material that changes phase at 6 to 35 ° C.,
It does not get hot, hot, or cold when exposed to outside temperatures. In particular, in the case of a cover cushion material for an automobile seat, it is possible to prevent the vehicle from becoming hot or cold even when parked outdoors.

[0012]

Embodiments of the present invention will be described below in detail.

First, the heat storage particles for imparting the heat storage temperature adjusting function to the cover cushion material and the vehicle member of the present invention will be described.

As described above, the heat storage particles are preferably microcapsules in which a latent heat storage agent is encapsulated in a shell.

As the latent heat storage agent, one having an appropriate melting point may be selected according to the use of the cover cushion material or the vehicle member. For example, paraffin hydrocarbon, natural wax, petroleum wax, polyethylene glycol,
Hydrates of inorganic compounds and the like can be used.

The microcapsules may have a temperature slightly lower than the body temperature, for example, in the range of about 6 to 35 ° C., particularly about 2 to 35 ° C.
The material is selected to have a solid-liquid phase transition temperature around 8 ° C. Examples of this material include tetradecane (melting point 6 ° C.), hexadecane (melting point 18 ° C.), octadecane (melting point 25 ° C.), nonadecane (melting point 32 ° C.), and the like.

The material of the shell is a material whose heat-resistant temperature is sufficiently higher than the melting point of the latent heat type heat storage agent, for example, 30 ° C. or more, preferably 50 ° C. or more. A material having strength according to the use of the member may be appropriately selected. For example, melamine resin, acrylic resin, urethane resin and the like can be mentioned. Among them, a particularly preferred material is polyoxymethylene urea.

The preferred outer diameter of the microcapsules is 1 to 5
It is 00 μm, and more preferably 5 to 100 μm. It is preferable that the amount of the latent heat storage agent included is large from the viewpoint of the latent heat effect. However, if the amount is too large, the microcapsules may be damaged due to a change in the volume of the latent heat storage agent. For this reason, the amount of the latent heat storage agent with respect to the total weight of the microcapsules is preferably 30 to 90% by weight, and more preferably 60 to 80% by weight.

As a method for producing the microcapsules, an appropriate method may be selected from conventionally known methods such as an interfacial polymerization method, an in-situ polymerization method, and a coacervate method, depending on the materials of the latent heat storage agent and the shell. I just need.

Next, the cover cushion material of the present invention using such microcapsules will be described.

The cover cushion material of the present invention is removably arranged on a human body contact surface such as a car seat, a chair, a child seat, a stroller, a chair and a wheelchair. This cover cushion material may be detachably fastened with a planar fastener (trade name: magic tape), a hook, a clip fastener (zipper), a double-sided tape, or the like, or may be arranged to simply overlap.

The cover cushion material is made of a soft material such as a foam, a soft synthetic resin, natural leather or synthetic leather, or a gel material. If necessary, a woven fabric, a nonwoven fabric, a natural leather or a synthetic leather is used. It is covered with a cover (for example, a bag-shaped cover). The soft part contains heat storage particles. Note that the above cover may also contain heat storage particles. This cover may be integrated with the soft part, or may be separate from the soft part as in the bag-like cover described above.

This cover cushion material is removed from, for example, an automobile seat, a chair, a child seat, a stroller, etc., and left under a predetermined temperature atmosphere to reach a predetermined temperature. Specifically, in summer, it is left to cool in a cooling space lower than the atmospheric temperature, and in winter, it is left in a heating space to warm it. Then, when necessary, it is mounted on a car seat, a chair, a child seat, a stroller, or the like, and used.

However, such attachment and detachment need not be performed. In the case of a stroller or a child seat, the cover cushion material may be cooled or warmed by leaving it in a cool place or a warm place.

The microcapsules are 20 to 80% by weight based on the total weight of the temperature adjusting material of the cover cushion material.
It is preferably contained, and more preferably 25 to 75% by weight. When the content of the microcapsules is less than 20% by weight, the heat storage effect may be insufficient. On the other hand, if the content of the microcapsules exceeds 80% by weight, the strength and the like of the cover cushion material decrease, which is not preferable.

Examples of the base material on which the heat storage particles are dispersed include foam materials, natural leather or synthetic leather, synthetic resins, and gel materials. Further, a laminated structure may be adopted in which the front side is made of synthetic leather and the back side is made of a foam material.

Although there is no particular limitation on the foam material,
SBR foam, urethane foam or mechanical froth urethane foam is preferred.

The thickness of the foam is preferably at least 2 mm. The foam may be breathable. In order to provide this air permeability, it is preferable to make the foam material itself highly permeable (100 cc / cm / sec or more) or to make a hole in the foam material.

In order to secure the air permeability with the cushion material, a cushion material having a two-layer structure of a temperature control material foam in which a film-removed urethane foam and heat storage particles are blended may be used. There is no thickness limitation for the film-removed urethane foam,
The thickness of the temperature control material foam is preferably 2 mm or more.

For example, in the case of a cover cushion material for a child seat (infant seat for an automobile), the skin is an SBR foam layer (thickness: 2 mm) containing 30% by weight of heat storage particles (phase change temperature: 28 ° C.), and the back side is removed. It is preferable to use a film urethane foam (thickness: 2 mm). In this case, it is convenient to carry by making a fold so that it can be folded in three. In addition, it becomes easy to bend the cover cushion material so as to follow the inner surface shape of the child seat.

The cover cushion material may be foldable. This makes it easy to carry.

Next, the vehicle member of the present invention will be described.

The vehicle member according to the present invention includes an automobile seat material (eg, a seat cushion), a steering wheel, a dashboard, an instrument panel, a seat belt, a ceiling material,
It is suitable for vehicle interior materials such as floor materials, floor mats, door lining materials, and glass, and various base materials are used depending on the members.

For example, in the case of a seat cushion or a floor mat, a foam, a synthetic resin, or the like can be used as a base material similarly to the cover cushion material.

In the case of a handle, a dashboard, an instrument panel, etc., a hard synthetic resin may be used.

Examples of the ceiling material, floor material and door lining material include foams and soft or hard synthetic resins.

As the seat belt, a woven fabric can be used.

These members may be covered with a cover made of woven fabric, nonwoven fabric, artificial leather, natural leather, etc. In this case, the cover may also contain heat storage particles.

In the vehicle member of the present invention, the microcapsules are preferably contained in an amount of 30% by weight with respect to the base material.
Depending on the type of vehicle member, 5
５０50% by weight. If the amount of the microcapsules is less than 5% by weight with respect to the base material, the heat storage effect may be insufficient. On the other hand, if the amount of the microcapsules exceeds 50% by weight based on the base material, the strength and the like are undesirably reduced.

In a vehicle equipped with the vehicle member of the present invention, even after the engine is stopped, the vehicle member maintains the temperature in the vehicle cabin whose temperature is adjusted by the air conditioner for a long time. Overheating and overcooling of the vehicle itself are prevented, thereby preventing overheating and overcooling of the room temperature in the vehicle cabin.

For this reason, when the occupant returns to the vehicle after parking for a long time, for example, even if the driver touches a steering wheel or the like, the vehicle does not become excessively cold or excessively hot, and the temperature in the vehicle compartment is maintained. Therefore, after the engine is started, the temperature is adjusted to a comfortable temperature early.

The vehicle member of the present invention is not limited to automobiles (passenger cars, trucks, buses), but can be applied to various vehicles such as trains, monorails, bicycles, motorcycles, and other tillers.

[0043]

The present invention will be described more specifically below with reference to examples and comparative examples.

Example 1 As a heat storage microcapsule, Frisby Technologies
A cover cushion material was manufactured using the brand name THERMASORB83. This microcapsule has a latent heat storage agent having a melting point of 28 ° C. encapsulated in a shell made of polyoxymethylene urea at 75% by weight based on the total weight of the microcapsule, and has an average particle size of 28 μm.

This cover cushion material is made of urethane foam (thickness 5 mm, density 60 kg / m ³ ) containing 30% by weight of the above microcapsules.

When the temperature change characteristic of the cover cushion material from 20 ° C. to 40 ° C. was examined by the following method, it was 60 minutes.

[Temperature change characteristic test method] This cover cushion material was left in an atmosphere of 20 ° C for 2 hours, then raised to an atmosphere of 40 ° C, held at this temperature, and the surface temperature of the cover cushion material detected by a thermocouple was measured. Was measured until the temperature reached an equilibrium temperature of 20 ° C. to 40 ° C.

Comparative Example 1 A urethane foam was produced in the same manner as in Example 1 except that the heat storage particles were not added, and the temperature change characteristic of the surface was measured. As a result, it was 30 minutes.

As apparent from this test, the cover cushion material of the present invention takes a long time to raise the temperature from 20 ° C. to 40 ° C., and has a good temperature control function.

Example 2 The microcapsule-containing urethane foam produced in Example 1 was adhered to the entire inner surface including the acrylic box lid of 300 mm × 30 mm × 30 mm, and the box lid was opened for a sufficient time. The temperature of the inside of the box was adjusted to 20 ° C.

Thereafter, the lid of the box was closed, the box was left in an atmosphere of 35 ° C., and the time required for the temperature inside the box to reach 35 ° C. was measured, and it took 60 minutes.

Comparative Example 2 Using the urethane foam produced in Comparative Example 1, the temperature change characteristics were examined in the same manner as in Example 1, and it was 30 minutes.

As apparent from this test, the vehicle member of the present invention takes a long time to increase the temperature of the vehicle interior from 20 ° C. to 35 ° C., which is the external environmental temperature, and has a good temperature control function.

[0054]

As described above, according to the present invention, it has a heat storage property, it does not become stuffy or hot for a long time, and it does not become excessively hot or cold,
A cover cushion material that can be used comfortably is provided. Further, according to the present invention, it has heat storage properties and is hardly affected by the outside air temperature, so that not only the vehicle member itself but also the room temperature controlled by the air conditioner can be compared even after the air conditioner is stopped. There is provided a vehicle member that can be maintained for a long period of time and can enhance comfort in a vehicle compartment.

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) A47C 27/14 A47C 27/14 C B60R 13/02 B60R 13/02 ABZ F-term (Reference) 3B084 JA03 JA06 JC06 3B096 AA03 AC11 AD07 AD08 3D023 BA01 BB02 BB08 BB12 BB17 BC01 BD01 BD03 BD04 BD12 BE02 BE31

Claims (20)

[Claims] 1. A cover cushion material at least partially composed of a temperature adjusting material, wherein the temperature adjusting material contains a base material and heat storage particles dispersed in the base material. And cover cushioning material. 2. The cover cushion material according to claim 1, wherein the heat storage particles are microcapsules in which a latent heat storage agent is contained in a shell. 3. The latent heat storage agent according to claim 2, wherein the latent heat storage agent is a liquid.
A cover cushion material which generates a solid phase change. 4. The method according to claim 3, wherein the phase change is from 6 to 35 ° C.
A cover cushion material characterized by being generated by: 5. The cover cushion material according to claim 1, wherein the base material is a foam, leather, synthetic resin, or gel material. 6. The cover cushion material according to claim 1, wherein the heat storage particles have a dispersion amount of 20 to 80% by weight. 7. The cover cushion material according to claim 1, wherein the heat storage particles have a particle size of 1 to 500 μm. 8. The cover cushion material according to claim 1, wherein the base material is made of a foam having air permeability of 100 cc / cm / sec or more. 9. The cover cushion material according to claim 1, wherein the base material has a ventilation hole. 10. The cover cushion material according to claim 5, wherein the base material is SBR foam, urethane foam or mechanical froth urethane foam. 11. The cover cushion material according to claim 1, wherein the cover cushion material has a laminated structure of a film-removed urethane foam and a foam made of the temperature adjusting material. 12. The cover cushion material according to claim 1, wherein the cover cushion material is foldable. 13. A vehicle member at least partially composed of a temperature adjusting material, wherein the temperature adjusting material contains a base material and heat storage particles dispersed in the base material. Vehicle member. 14. The vehicle member according to claim 13, wherein the heat storage particles are microcapsules having a latent heat storage agent encapsulated in a shell. 15. The vehicle member according to claim 14, wherein the latent heat storage agent generates a liquid-solid phase change. 16. The method according to claim 15, wherein the phase change is 6 to 3.
A member for vehicles, which is generated at 5 ° C. 17. The vehicle member according to claim 13, wherein the base material is a foam, leather, synthetic resin, or gel material. 18. The vehicle member according to claim 17, wherein the base material is SBR foam, urethane foam or mechanical froth urethane foam. 19. The vehicle member according to claim 13, wherein the dispersion amount of the heat storage particles is 30% by weight or more based on the base material. 20. The vehicle member according to claim 13, wherein the heat storage particles have a particle size of 1 to 500 μm.