JP2011050462A - Thin seat excellent in comfortability - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a thin seat excellent in comfortability, capable of controlling a ventilation degree by a detachable or storable covering material so as not to be easily stuffy in summer and so as not to feel cold in winter. <P>SOLUTION: The thin seat includes a laminate structure formed by laminating the covering material on at least one surface of a woven material. The woven material is formed by partially disposing monofilaments comprising a thermoplastic elastic resin in at least one of warp and weft. The ventilation degree of the covering material when ventilated at a pressure of 125 Pa is not more than 50 cc/cm<SP>2</SP>*sec, and the covering material can be detached or stored inside the seat. The laminate structure is spread and fixed to a frame and the covering material is arranged on the back surface side of the seat. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a car seat having a low feeling of swaying in summer and a low feeling of coldness even in a low-temperature environment in winter and excellent in comfort, and a thin seat excellent in comfort used for various seats.

  Conventionally, urethane foam, padding made of polyester fiber, resin cotton bonded with polyester fiber, or solid cotton have been used as cushioning materials for furniture such as chairs and beds, automobiles, trains, and other transportation equipment. Yes. Furthermore, in order to obtain comfortable performance as a cushion, a method of combining materials having different cushioning properties or a method of forming a double structure at the time of cushion molding has been proposed. All of these cushion materials are insufficient in terms of bulkiness or cushioning properties with a small volume. Also, the comfort of sitting is strongly affected by the air permeability of the cushioning material when sitting, but conventional cushions such as urethane foam, padding made of polyester fiber, resin cotton bonded with polyester fiber, or solid cotton There was a limit to improving the air permeability of the material.

  In addition, foam-crosslinked urethane has good durability as a cushioning material, but is inferior in moisture permeability and water permeability and heat storage, so it is easily stuffy. Furthermore, since it is not a thermoplastic resin, it is difficult to recycle, and when incinerated, the incinerator is seriously damaged and toxic gas removal is costly. Therefore, although landfill processing has increased, there is a problem that the landfill location is limited and the cost increases because it is difficult to stabilize the ground. In addition, the processability is excellent, but there is a problem of pollution of chemicals used during production. In addition, cotton stuffed cotton made of thermoplastic polyester is not fixed between the fibers, causing problems such as collapse of the shape and movement of the fibers during use, and further degradation and elasticity due to crimp sag. The decline in sex becomes a problem.

As a cushion material having a small volume and good cushioning properties, a cushion material made of woven or knitted fabric using elastic yarn (see, for example, Patent Documents 1 and 2), and a cloth spring made of woven or knitted fabric using elastic yarn are three-dimensionally arranged. A thin seat in which meshes are laminated has been proposed (see, for example, Patent Document 3).
However, since these thin cushion materials have high air permeability, heat and moisture between the cushion material and the human body are likely to be released to the outside air in the summer, so that the feeling of swelling is small and the comfort is excellent. Furthermore, in winter, the contact area with the cushioning material is easily exposed to constant temperature outside air, so it is colder than conventional urethane foam, polyester fiber-filled cotton, resin cotton bonded with polyester fiber, or solid cotton. There is a problem of feeling inferior and inferior in comfort.

JP 2003-113552 A JP 2006-132046 A International Publication No. 2004/014192 Pamphlet

  An object of the present invention is to solve the above-mentioned conventional problems, and the air permeability is controlled by a removable or retractable covering material so that it is difficult to get stuffy in summer and to feel cold in winter. The object is to provide a thin seat that can be comfortably provided.

The thin seat cloth of the present invention capable of solving the above-described problems has the following configuration.
That is, the present invention is a thin seat including a laminated structure formed by laminating a covering material on at least one side of a woven or knitted fabric, and the woven or knitted fabric is made of a thermoplastic elastic resin at least on either warp or weft. The monofilament is partly arranged, and the covering material has an air permeability of 50 cc / cm ² · sec or less when vented at a pressure of 125 Pa, and can be removed or stored in a seat, and is a laminated structure Is a thin seat characterized in that it is stretched and fixed to a frame and a covering material is arranged on the back side of the seat.

  The thickness of the woven or knitted fabric is 0.05 to 0.1 mm, and the thickness of the covering material is preferably smaller than the thickness of the woven or knitted fabric and 0.01 to 0.8 mm. Moreover, it is preferable that the fineness of a monofilament is 300-3000 dtex.

  In the present invention, it is preferable that a space is formed between the covering material and a woven or knitted fabric in which a monofilament made of a thermoplastic elastic resin is partially arranged. The space may be formed by arranging a porous body or a fiber assembly. Furthermore, it is preferable that the thickness of the space is 10 mm or less.

  The thin seat of the present invention is arranged so that the covering material can be removed or stored on at least one surface of a woven or knitted fabric in which a monofilament made of a thermoplastic elastic resin is arranged in part, so that the covering material can be stored in summer. It is possible to release heat and moisture easily by removing or storing it, and to improve the unpleasant feeling of stuffiness. In winter, it is possible to cut off the cool air and improve the unpleasant feeling of cold by arranging a covering material. is there.

  Furthermore, the use of a woven or knitted fabric as a surface layer prevents the porous body or fiber assembly, which has been said to be easily steamed, from coming into direct contact with the human body, and the temperature during sitting for a long time due to the minute space formed by the woven or knitted fabric. And increase in humidity can be reduced.

  In addition, by forming a space between the covering material and a woven or knitted fabric made of a monofilament made of a thermoplastic elastic resin, an air layer is formed to store heat instead of blocking only the outside air. Therefore, the cold feeling in winter can be improved.

  Furthermore, by forming the space by arranging a porous body or a fiber assembly, an air layer for storing heat is formed, which can not only improve winter comfort but also further improve cushioning properties. it can.

The results of evaluation of cold feeling using a thermal mannequin indicate the transition of the skin temperature of the back of the sweating mannequin while sitting. The result of evaluation of sensation using a sweating mannequin shows the transition of the absolute humidity of the back of the sweating mannequin while sitting.

Hereinafter, the present invention will be described in detail.
In the present invention, a covering material having a low air permeability may be disposed on at least one side of a cushion material using a woven or knitted fabric in which a monofilament made of a thermoplastic elastic resin conventionally used as a cushion material is partially arranged. is important. In the seat using cloth springs like the conventional thin seat, the seat part and the back part are exposed to low temperature outside air especially when used in winter, and the user feels cold, but thermoplastic. By arranging the covering material so that it can be removed or stored on at least one side of the woven or knitted fabric with a part of monofilament made of elastic resin, heat or moisture can be removed by removing or storing the covering material in summer. This is because it is possible to release the odor and improve the unpleasant feeling of stuffiness, and by disposing the covering material in winter, the cold air can be blocked and the unpleasant feeling of chill can be improved.

  Moreover, it is important to use a monofilament for a part as a woven or knitted fabric. This is because by using a monofilament, a fine space for releasing heat and moisture can be given to the woven or knitted fabric. In addition, when a monofilament is used, resistance to friction is reduced and durability is excellent. The preferred fineness of the monofilament is 100 dtex or more and 6000 dtex or less. If it is less than 100 dtex, there is little resistance to friction, and sufficient durability may not be obtained. If it exceeds 6000 dtex, handling in the production of woven and knitted fabrics becomes difficult. A more preferable range of the fineness is 300 dtex or more and 3000 dtex or less.

  The thickness of the Ochi knitted fabric is preferably from 0.03 to 0.15 mm, particularly preferably from 0.05 to 0.10 mm, from the viewpoint of reducing the feeling of summeriness in summer.

  In addition, the structure of the woven or knitted fabric used in the present invention can be selected from various knitted and knitted structures such as warp knitting (single raschel, double raschel, tricot), weft knitting, plain weave, twill weave, satin weave, leash weave, It is not limited to these.

  Moreover, it is not necessary to use only a monofilament for the woven or knitted fabric according to the present invention, and it may be combined with other multifilament yarns such as polyester yarns. For example, as the polyester yarn to be used, an unprocessed one, a loop processed yarn or a false twisted yarn, or a mixture of both may be used. The multifilament yarn may be an original yarn or a pre-dyed yarn. The use of polyester yarn is preferable because all the yarns constituting the woven or knitted fabric are polyester-based and can be easily recycled.

  Further, if it is necessary to impart flame retardancy and light resistance to the woven or knitted fabric used in the present invention, a yarn containing a flame retardant and a light resistant agent is used, or a flame retardant and a light resistant agent are used in the woven or knitted fabric. Can be granted. As for the elastic yarn, a method of adding melamine cyanurate or imparting a phosphorus compound as a flame retardant to be mixed with a raw material resin is known, but is not particularly limited thereto. In addition, a light fastness formulation by adding carbon black or the like can be used as the light fastener, but it is not particularly limited thereto.

  If it is necessary to impart color to the elastic yarn used in the woven or knitted fabric according to the present invention, a dye or a pigment may be contained. As the pigment, a method of adding an inorganic pigment such as a phthalocyanine-based organic pigment, carbon black, titanium oxide, or zinc oxide is known, but is not particularly limited thereto. By using the original yarn containing the pigment, the labor of dyeing can be saved.

  Further, it is necessary to use a thermoplastic elastic resin as a raw material for monofilaments to be arranged on the woven or knitted fabric according to the present invention. This is because the elastic resilience required as a cushion material can be obtained by using the thermoplastic elastic resin.

  The thermoplastic elastic resin in the present invention can be arbitrarily selected from polyester elastomers, polyamide elastomers, polyurethane elastomers, polyolefin elastomers, and the like. By using a thermoplastic elastic resin, since it can be regenerated by remelting, there is an effect that recycling becomes easy. Among the thermoplastic elastic resins, in particular, when a polyester elastomer is used, even when other polyester yarns are arranged on a part of the woven or knitted fabric, it is the same series material, so there is no need for separation at the time of disposal. .

  When a polyester-based elastomer is used as the thermoplastic elastic resin, a polyester ether block copolymer having a thermoplastic polyester as a hard segment and a polyalkylene diol as a soft segment, or a polyester ether block having an aliphatic polyester as a soft segment A copolymer can be illustrated.

  Examples of the polyester ether block copolymer include terephthalic acid, isophthalic acid, naphthalene 2,6 dicarboxylic acid, naphthalene 2,7 dicarboxylic acid, aromatic dicarboxylic acid such as diphenyl 4,4′dicarboxylic acid, 1,4 cyclohexane dicarboxylic acid, and the like. At least one dicarboxylic acid selected from alicyclic dicarboxylic acids such as acids, aliphatic dicarboxylic acids such as oxalic acid, adipic acid, sebacic acid and dimer acids, or ester-forming derivatives thereof; and 1,4 Aliphatic diols such as butanediol, ethylene glycol, tremethylene glycol, tetremethylene glycol, pentamethylene glycol and hexamethylene glycol, alicyclic diols such as 1,1 cyclohexane dimethanol and 1,4 cyclohexane dimethanol, or these S Among at least one diol component selected from the group-forming derivatives and the like, and polyalkylene diols such as polyethylene glycol, polypropylene glycol, polytetramethylene glycol, ethylene oxide-propylene oxide copolymer having an average molecular weight of about 300 to 5000 A ternary block copolymer composed of at least one kind is exemplified.

  The polyester ester block copolymer is a ternary block copolymer composed of at least one of the dicarboxylic acid, diol, and polyester diol such as polylactone having an average molecular weight of about 300 to 3000.

  In consideration of thermal adhesiveness, hydrolysis resistance, stretchability, heat resistance, etc., terephthalic acid as dicarboxylic acid or naphthalene 2,6 dicarboxylic acid, 1,4 butanediol as polydiol, and polyalkylenediol as diol component Is particularly preferably a polytetramethylene glycol ternary block copolymer or a polyester diol polylactone ternary block copolymer. As a special example, a polysiloxane-based soft segment can be used. Moreover, the said polyester elastomer can be used individually or in mixture of 2 or more types. Furthermore, a polyester elastomer blended with a non-elastomeric component or a copolymerized one can be used in the present invention.

  As a polyamide-based elastomer, the hard segment has nylon 6, nylon 66, nylon 610, nylon 612, nylon 11, nylon 12, etc. and copolymer nylon thereof as a skeleton, and the soft segment has an average molecular weight of about 300 to 5,000. A block copolymer composed of at least one of polyalkylene diols such as polyethylene glycol, polypropylene glycol, polytetramethylene glycol, and ethylene oxide-propylene oxide copolymer may be used alone or in admixture of two or more. Further, blended or copolymerized non-elastomeric components can be used in the present invention.

  Polyurethane elastomers include (A) a polyether and / or polyester having a hydroxyl group at the terminal with a number average molecular weight of 1000 to 6000 and (B) an organic compound in the presence or absence of a normal solvent (dimethylformamide, dimethylacetamide, etc.). A typical example is (C) a polyurethane elastomer obtained by extending a chain with a polyamine containing diamine as a main component to a prepolymer obtained by reacting a polyisocyanate containing diisocyanate as a main component and having both ends being isocyanate groups.

  The polyesters and polyethers of (A) include polybutylene adipate copolymer polyester, polyethylene glycol, polypropylene glycol, polytetramethylene glycol, ethylene oxide-propylene oxide copolymer having an average molecular weight of about 1000 to 6000, preferably 1300 to 5000. A polyalkylene diol such as a coalescence is preferable, and as the polyisocyanate of (B), a conventionally known polyisocyanate can be used, but a sosocyanate mainly composed of diphenylmethane 4,4 ′ diisocyanate is used, and a conventionally known polyisocyanate is used. A small amount of triisocyanate or the like may be used. As the polyamine (C), known diamines such as ethylene diamine and 1,2 propylene diamine are mainly used, and a trace amount of triamine and tetraamine may be used in combination as required. These polyurethane elastomers may be used alone or in combination of two or more.

  Further, in the present invention, a polyester film, a polyvinyl chloride film, a polyvinylidene chloride film, a polypropylene film, a polyethylene, as a covering material laminated on at least one surface of a woven or knitted fabric in which monofilaments made of a thermoplastic elastic resin are arranged in part Examples include films, synthetic leather, artificial leather, woven fabric, knitted fabric, and leather. Among these, when the material of the covering material is polyester, polypropylene, or polyethylene, toxic gas is hardly generated during incineration, which is more preferable from the viewpoint of reducing environmental load.

  The thickness of the covering material is smaller than the thickness of the woven or knitted fabric, and is preferably 0.01 to 0.8 mm.

In addition, the air permeability of the coating material used in the present invention is 50 cc / cm ² · sec or less when aeration is performed at a pressure of 125 Pa so that low-temperature outside air can be sufficiently blocked, preferably 10 cc / cm. ² · sec or less, particularly preferably 0 cc / cm ² / sec.

  The covering material of the present invention can be removed or stored, and if it can be removed, a hook-and-loop fastener, a fastener, a button, a magnet, a double-sided tape, a method of sandwiching between frames, a method of tensioning a frame, etc. It can be attached to the woven or knitted fabric or the seat frame, but it is not particularly limited as long as it can be easily attached and detached.

  When the covering material can be stored, it can be stored in the gap between the seat frame and the woven or knitted fabric, it can be wound and stored like a roll curtain, it can be folded and stored like a blinder, Thus, there is a method of collecting and storing on one side or both sides, and there is no particular limitation as long as it can be easily stored.

  The covering material is laminated on at least one surface of the woven or knitted fabric, and it is more preferable that the coating material is laminated only on the back surface without impairing the appearance and feel of the sheet surface. The back surface here means a surface on which the woven or knitted fabric does not contact the human body.

  In the present invention, a woven or knitted fabric formed by partially arranging a monofilament made of a thermoplastic elastic resin is used as a surface layer, and a coating layer is used as a back layer. By using, as a surface layer, a woven or knitted fabric in which monofilaments made of a thermoplastic elastic resin are partly disposed, a porous body or fiber assembly that has been said to be easily steamed does not directly touch the human body. This is because an increase in temperature and humidity when used for a long period of time can be reduced by the minute space formed by. The surface layer referred to here means the side that touches the human body when sitting in the laminated structure, and the back layer means the side that does not directly touch the human body.

  The covering material is laminated such that a part or all of the covering material is in contact with the woven or knitted fabric, or is laminated so as to form a space between the woven or knitted fabric, or a porous body or fiber assembly between the woven and knitted fabric. Laminated so as to sandwich the body.

  When a space is formed and laminated between the covering material and the woven or knitted fabric, or when the porous material or fiber assembly is laminated between the woven and knitted fabric, the space or the porous material or fiber Since the air layer of the assembly is warmed by body temperature, comfort in winter is further improved, which is preferable.

  When a space is formed between the covering material and the woven or knitted fabric, the distance between the covering material and the woven or knitted fabric is preferably 100 mm or less. In order to efficiently store the body temperature in the air layer, the distance between the covering material and the woven or knitted fabric is more preferably 10 mm or less.

  When a porous body or fiber assembly is laminated between the covering material and the woven or knitted fabric, the thickness of the porous body or fiber assembly is preferably 100 mm or less. Further, in order to efficiently store and store heat due to body temperature, the thickness of the porous body or fiber assembly is more preferably 10 mm or less.

  The porous body or fiber assembly laminated between the covering material and the woven or knitted fabric may be urethane foam, padding made of polyester fiber, resin cotton or solid cotton bonded with polyester fiber, or three-dimensional random loop bonding structure The body is mentioned.

Among these porous bodies or fiber assemblies, a three-dimensional random loop bonded structure is preferable. Furthermore, a three-dimensional random loop joined structure formed by winding a continuous linear body of 300 dtex or more to form a random loop, bringing the respective loops into contact with each other in a molten state, and fusing most of the contact portions. More preferred. Moreover, it is more preferable that the apparent density of the three-dimensional random loop bonded structure under a load of 100 g / cm ² is 0.05 to 0.20 g / cm ³ .

The present invention will be described below based on examples.
The present invention is not particularly limited by the examples. In addition, the measuring method used in the Example is as follows.

(1) Air permeability Based on JIS L 1096 (Breathability, Method A, Frazier type method), the amount of air passing through the test piece at a differential pressure of 125 Pa was measured using a Frazier type tester.

(2) Fine diameter of three-dimensional reticulated elastic body A sample is cut into a size of 20 cm x 20 cm, and linear bodies are collected from 10 locations. The specific gravity at 40 ° C. of the linear bodies collected from 10 places is measured using a density gradient tube. Furthermore, the cross-sectional area of the linear body collected from the 10 locations is calculated from a photograph magnified 30 times with an optical microscope. Next, a volume corresponding to a length of 10,000 m of the linear body is obtained from the cross-sectional area. Ten numerical values (mass of 10,000 m of the linear body) obtained by multiplying the obtained specific gravity and volume are measured, and the average value is defined as the fineness (fine diameter).

(3) Thickness and apparent density of the three-dimensional reticulated elastic body joined sample After cutting the sample into a size of 15 cm × 15 cm and leaving it unloaded for 24 hours, the height of four locations was measured, and the average value was taken as the sample Thickness.
Moreover, the apparent density of a sample calculates | requires the volume from a sample thickness, and calculates | requires the numerical value which remove | divided the mass of the sample by the volume, respectively, and makes the average value an apparent density.

(4) Evaluation of cold feeling in winter by thermal mannequin Thermal mannequin (manufactured by Toyobo Co., Ltd., SAM) sits on a model seat installed in a constant temperature and humidity chamber controlled at 0 ° C, and then controls the temperature and humidity of the constant temperature and humidity chamber Was changed to 25 ° C. and 50% RH, and the seating was continued. The back skin temperature was measured for 40 minutes while sitting.

(5) Evaluation of cold feeling in winter by monitor test The cold feeling was judged by a monitor of five people.
The monitor was seated on a model seat installed in a constant temperature and humidity chamber controlled at 0 ° C., then the temperature and humidity control of the constant temperature and humidity chamber was changed to 25 ° C. and 50% RH, and the seating was continued. The cold feeling after 30 minutes of sitting was evaluated in the following five stages from cold (-2) to warm (+2). The average value of five monitors was used as the overall judgment.

(sensory evaluation)
-2: Cold -1: Slightly cold 0: Neither can be said +1: Slightly warm +2: Warm

(6) Evaluation of summer sensation by sweating mannequin A sweating mannequin (manufactured by Toyobo Co., Ltd., SAM) is placed on a model seat installed in a constant temperature and humidity chamber controlled at 50 ° C. and 20% RH, and then constant temperature and humidity The room temperature and humidity control was changed to 18 ° C. and 50% RH, and the seating was continued. The absolute humidity in the clothes on the back was measured for 30 minutes while sitting.

(7) Evaluation of summer sensation by monitor test The sensation of coldness was judged by five monitors.
The monitor was seated in a model seat installed in a constant temperature and humidity chamber controlled at 50 ° C. and 20% RH, and then the temperature and humidity control of the constant temperature and humidity chamber was changed to 18 ° C. and 50% RH, and the seating was continued. . The sensation of sensation after 30 minutes while sitting was evaluated in five stages, from dry (-2) to wet (+2). Based on the average, a comprehensive judgment was made.

(sensory evaluation)
-2: Dry -1: Slightly dry 0: Neither can be said +1: Slightly wet +2: Damp

Example 1
(Weaving and knitting)
As the weft, a polyether ester elastomer having a melting point of 222 ° C. is used as a core component, and a polyether ester elastomer having a melting point of 182 ° C. is used as a sheath component, and the mass ratio is core / sheath = 80/20. , 080 dtex elastic yarn with a density of 20 / inch, warp, polyester multifilament yarn with a total fineness of 830 dtex is woven at a density of 28 yarns / inch, a plain weave with a thickness of 0.07 mm Woven fabric was used.

(Coating material)
A polyethylene film having a thickness of 0.04 mm, a basis weight of 21 g / m ² , and an air permeability of 0 cc / cm ² · sec was used.

(Model seat)
The woven fabric was stretched and fixed to a bench seat type metal frame having a seating surface of 38 cm × 58 cm. In addition, a double-sided tape was attached to the back surface of the fabric stretched and fixed to the frame, and the polyethylene film was used as a coating material to adhere to the fabric to obtain a laminated structure having a removable coating material. In this way, a model seat was prepared in which the back of the fabric was arranged so as to be a polyethylene film (coating material).
Next, the feeling of coldness of the created model seat was evaluated. In addition, at the time of evaluating the feeling of swaying in the summer, all the covering materials were peeled off from the fabric.

Example 2
(Weaving and knitting)
As the weft, a polyether ester elastomer having a melting point of 222 ° C. is used as a core component, and a polyether ester elastomer having a melting point of 182 ° C. is used as a sheath component, and the mass ratio is core / sheath = 80/20. , 080 dtex elastic yarn with a density of 20 / inch, warp, polyester multifilament yarn with a total fineness of 830 dtex is woven at a density of 28 yarns / inch, a plain weave with a thickness of 0.07 mm Woven fabric was used.

(Coating material)
A polyethylene film having a thickness of 0.04 mm, a basis weight of 21 g / m ² , and an air permeability of 0 cc / cm ² · sec was used.

(Model seat)
The woven fabric was stretched and fixed to a bench seat type metal frame having a seating surface of 38 cm × 58 cm. Moreover, the core of the roll curtain was attached to the seat frame, and the polyethylene film was wrapped around the core so that the polyethylene film could be stored. When the polyethylene film was pulled out, the core of the roll curtain was arranged so that the polyethylene film was in close contact with the fabric. In this way, a model seat was prepared in which the polyethylene film (coating material) was placed on the back of the fabric so that it could be stored.
The cold feeling of the model seat of the laminated structure composed of the woven fabric and the covering material thus prepared was evaluated. In addition, at the time of evaluating the feeling of swaying in the summer, the evaluation was performed in a state where the covering material was wound around the core of the roll curtain and stored.

Example 3
(Weaving and knitting)
As the weft, a polyether ester elastomer having a melting point of 222 ° C. is used as a core component, and a polyether ester elastomer having a melting point of 182 ° C. is used as a sheath component, and the mass ratio is core / sheath = 80/20. , 080 dtex elastic yarn with a density of 20 / inch, warp, polyester multifilament yarn with a total fineness of 830 dtex is woven at a density of 28 yarns / inch, a plain weave with a thickness of 0.07 mm Woven fabric was used.

(Coating material)
A polyethylene film having a thickness of 0.04 mm, a basis weight of 21 g / m ² , and an air permeability of 0 cc / cm ² · sec was used.

(Model seat)
The woven fabric was stretched and fixed to a bench seat type metal frame having a seating surface of 38 cm × 58 cm. Moreover, the core of the roll curtain was attached to the seat frame, and the polyethylene film was wrapped around the core so that the polyethylene film could be stored. When the polyethylene film was pulled out, the polyethylene film was adhered to the frame with double-sided tape, and a model seat was created so that a 1 cm space was formed between the fabric and the film.
The cold feeling of the model seat of the laminated structure composed of the woven fabric and the covering material thus prepared was evaluated. In addition, at the time of evaluating the feeling of swaying in the summer, the evaluation was performed in a state where the covering material was wound around the core of the roll curtain and stored.

Example 4
(Weaving and knitting)
As the weft, a polyether ester elastomer having a melting point of 222 ° C. is used as a core component, and a polyether ester elastomer having a melting point of 182 ° C. is used as a sheath component, and the mass ratio is core / sheath = 80/20. , 080 dtex elastic yarn with a density of 20 / inch, warp, polyester multifilament yarn with a total fineness of 830 dtex is woven at a density of 28 yarns / inch, a plain weave with a thickness of 0.07 mm Woven fabric was used.

(Coating material)
A polyethylene film having a thickness of 0.04 mm, a basis weight of 21 g / m ² , and an air permeability of 0 cc / cm ² · sec was used.

(Three-dimensional mesh-like elastic body)
A polyether ester elastomer having a melting point of 200 ° C. was melted and discharged from a nozzle (nozzle hole diameter: 1 mm, single hole discharge amount: 1.4 g / min) at 240 ° C. Next, the cooling water is arranged so that the water surface comes to 250 mm below the nozzle surface, and a stainless steel endless net with a width of 60 cm is arranged in parallel at intervals of 2 cm so that a pair of take-up conveyors are partly exposed on the water surface. While the contact portion was fused, both sides were sandwiched, and solidified by being drawn into normal temperature cooling water at a speed of 1.1 m / min. Then, it cut | disconnected to the predetermined | prescribed magnitude | size and obtained the three-dimensional net-like elastic body.

The obtained three-dimensional random loop bonded structure was heated at 105 ° C. for 15 minutes and subjected to pseudo crystallization treatment. The obtained three-dimensional random loop joined body had a fineness of 2,000 dtex, an apparent density of 60 kg / m ³ , a thickness of 10 mm, and a 25% hardness of 50 N.
(Model seat)
The above-mentioned woven fabric was stretched and fixed to a bench sheet type metal frame having a back surface of 38 cm × 58 cm. In addition, a model seat was prepared by sandwiching a polyethylene film with a 10 mm thick three-dimensional elastic body between the polyethylene film and a woven fabric in which the polyethylene film was attached to the frame with double-sided tape.
The cold feeling of the model seat of the laminated structure composed of the woven fabric, the covering material and the three-dimensional net-like elastic body thus prepared was evaluated. In addition, at the time of evaluation of the feeling of swaying in summer, the polyethylene film was peeled off and evaluated.

(Comparative Example 1)
(Model seat)
The fabric prepared in Example 1 was stretched and fixed to a bench seat type metal frame having a seating surface of 38 cm × 58 cm to prepare a model seat.
The cold feeling and the summer sensation of the model seat composed only of the fabric thus prepared were evaluated.

(Comparative Example 2)
A cold feeling and a feeling of peeling were evaluated by using a car seat having a leather material as a skin material and urethane foam as a cushion material, which is used in a commercially available car.

(result)
Table 1 shows the evaluation results of the feeling of coldness and swaying by the monitor test of Examples and Comparative Examples.

  From Table 1, since Examples 1-4 and Comparative Example 2 all have positive values, they tend to be warm. On the other hand, since Comparative Example 1 has a negative value, it tends to be cold. In addition, Examples 1 and 2 tend to be warmer than Comparative Example 1 made of only a woven fabric, but tend to be less warm than Comparative Example 2 using a commercially available car seat. On the other hand, Example 3 in which a space was formed and a covering material (polyethylene film) was affixed and Example 4 in which a three-dimensional net-like elastic body was inserted in the space showed a tendency to be warmer than Comparative Example 1 consisting of only a fabric. Furthermore, the warmth is almost the same as that of Comparative Example 2 which is a commercially available car seat.

  FIG. 1 shows an example of the transition of the back skin temperature of a sweating mannequin while sitting on a cold feeling evaluation result using a thermal mannequin (manufactured by Toyobo Co., Ltd., SAM).

  From FIG. 1, it can be seen that the back skin temperature of the thermal mannequin is higher in Example 1 than in Comparative Example 1 consisting only of fabric, and the cold feeling is alleviated. However, Example 1 has a lower back skin temperature of the thermal mannequin than Comparative Example 2 which is a commercially available car seat, and the cold feeling is not as high as that of the commercially available car seat.

  Table 1 shows the back skin temperature of the thermal manikin 30 minutes after sitting in Examples 1 to 4 and Comparative Examples 1 and 2.

  From Table 1, from the evaluation with the thermal mannequin, Examples 1 and 2 show a warm tendency with respect to Comparative Example 1 consisting only of the woven fabric, but warmness with respect to Comparative Example 2 which is a commercially available car seat. There is a tendency to be inferior.

  On the other hand, Example 3 in which a space was formed and a film was attached and Example 4 in which a three-dimensional net-like elastic body was inserted into the space showed a warm tendency compared to Comparative Example 1 consisting only of a woven fabric. The warmth is almost the same as that of Comparative Example 2 which is a car seat.

  In addition, Table 1 shows the evaluation results of the feeling of summer sensation by the monitor test of Examples and Comparative Examples.

  From Table 1, since Examples 1-4 and the comparative example 1 are taking the negative value, the tendency which cannot be removed is seen. On the other hand, since Comparative Example 2 takes a positive value, a tendency to peel off is observed. Moreover, although the tendency for Example 1 to peel off somewhat is seen with respect to the comparative example 1 which consists only of textiles, the tendency which is not peeled with respect to the comparative example 2 which is a commercially available car seat is seen. In Examples 2 and 3, there is a tendency not to be peeled compared to Comparative Example 2 which is a commercially available car seat.

  On the other hand, Example 4 in which a three-dimensional net-like elastic body is inserted in the space between the fabric and the covering material has a tendency to be slightly dissatisfied with respect to Comparative Example 1 made of only the fabric, and is a commercially available car seat. There is an undeniable tendency for Example 2.

  FIG. 2 shows an example of the transition of the absolute humidity in the clothes of the sweating mannequin while sitting, based on the evaluation results of the cold feeling using the sweating mannequin.

  From FIG. 2, it can be seen that Example 1 has a lower absolute humidity of the back of the sweating mannequin compared to Comparative Example 2 which is a commercially available car seat, and the feeling of peeling is small. However, in Example 1, the absolute absolute humidity of the back part of the sweating mannequin is higher than that in Comparative Example 1 including only the woven fabric, and Example 1 has a tendency to be slightly higher than that in Comparative Example 1.

  Table 1 shows the absolute humidity of the back of the sweating mannequin 30 minutes after sitting in Examples 1 to 4 and Comparative Examples 1 and 2.

  From Table 1, although Example 1 has a tendency to be somewhat peeled compared to Comparative Example 1 made of only a woven fabric, it tends to be difficult to see Comparative Example 2 which is a commercially available car seat. Examples 2 and 3 tend not to be peeled compared to Comparative Example 2 which is a commercially available car seat, and also tend to have a low degree of swelling for Comparative Example 1 consisting only of a woven fabric.

  On the other hand, Example 4 in which a three-dimensional net-like elastic body is inserted in the space between the woven fabric and the covering material has a tendency to be somewhat less than Comparative Example 1 consisting of only the woven fabric, and is a comparative example that is a commercially available car seat. There is a tendency for 2 to remain.

  Table 1 summarizes the feeling of summeriness and the feeling of coldness in the winter of Examples 1 to 4 and Comparative Examples 1 and 2.

  From Table 1, it can be judged that Comparative Example 1 is excellent in comfort only in summer and Comparative Example 2 is excellent in comfort only in winter, whereas Examples 1-4 are excellent in comfort in summer and winter. .

  The thin seat of the present invention can be applied as a seat for a railway vehicle, automobile, ship, general household, office work, etc., and is particularly suitable as a vehicle seat. Furthermore, it is also useful in applications such as bedding and pillows used in ordinary households, accommodation facilities, hospitals, railway vehicles, ships and the like. Of course, it can also be used in combination with other materials that should meet the required performance in relation to the application, and can be processed and given a shape within a range that does not degrade the performance of the present invention. Furthermore, functions such as flame retardancy, insecticidal and antibacterial properties, heat resistance, water and oil repellency, coloring, and aromaticity can be imparted by adding chemicals at any stage of commercialization.

Claims (6)

A thin seat including a laminated structure in which a covering material is laminated on at least one side of a woven or knitted fabric,
The woven or knitted fabric is formed by arranging a monofilament made of a thermoplastic elastic resin in part on at least one of the warp and the weft.
The covering material has an air permeability of 50 cc / cm ² · sec or less when vented at a pressure of 125 Pa, and can be removed or stored in the seat.
The laminated structure is a thin seat characterized in that the laminated structure is stretched and fixed to a frame, and a covering material is disposed on the back side of the seat.   The thin seat according to claim 1, wherein the thickness of the woven or knitted fabric is 0.05 to 0.1 mm, and the thickness of the covering material is smaller than the thickness of the woven or knitted fabric and is 0.01 to 0.8 mm.   The thin seat according to claim 1 or 2, wherein the fineness of the monofilament is 300 to 3000 dtex.   The thin seat according to any one of claims 1 to 3, wherein a space is formed between a covering material and a woven or knitted fabric formed by partially arranging a monofilament made of a thermoplastic elastic resin.   The thin seat according to claim 4, wherein the space is formed by arranging a porous body or a fiber assembly.   The thin seat according to claim 4 or 5, wherein the space has a thickness of 10 mm or less.