JP2009208564A - Vehicular seat pad and its manufacturing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicular seat pad which is easily multi-product manufactured and product managed. <P>SOLUTION: The vehicular seat pad comprises a body made of a foamed resin and a sub-material, and in the vehicular seat pad, a discrimination mark indicating characteristic of the seat pad is provided in the state where it can be visually recognized. The vehicular seat pads having different characteristics are manufactured, for example, by foaming-molding a foamable resin composition with the sub-material having the discrimination mark indicating the characteristic of the seat pad using a molding metal die to manufacture the vehicular seat pad having the discrimination mark in the visually recognizable state, and by foaming-molding the foamable resin composition indicating characteristic different from the above characteristic with the sub-material having the discrimination mark different from the above mark indicating that the seat pad has the characteristic different from the above characteristic by using the same molding metal die as the above metal die. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a vehicle seat pad used for a vehicle such as an automobile and a method for manufacturing the same.

  In general, a molded product of flexible polyurethane foam having high elasticity is used for a cushion pad of a vehicle seat such as an automobile and a seat pad such as a back pad. Since these cushion pads and back pads have different required characteristics according to the standards, the blending prescription of the foaming raw material is determined according to the respective standards (Patent Document 1).

  For example, the hardness of the seat pad is set to one type for one size or shape (one standard), and the measurement result of the hardness of the size is recorded and managed in a form. Since the seat pad is engraved with signs such as company name, product name, serial number, and standard, it is possible to obtain the hardness of a specific standard by examining the above form.

  Further, since only one type of hardness is given to one type of size or shape (one standard), it is difficult to set two types of hardness, ie two standards, to one type of size or shape. It is.

JP 2004-167824 A

  Conventionally, since a seat pad is managed with one standard for one type of size or shape, only one type of hardness can be given to a seat pad of that standard, so one type of size or shape (1 It is difficult to set two kinds of hardness, that is, two standards with respect to (standard), and it becomes complicated when implemented. That is, since one type of molding die is used for one type of standard, it is necessary to change the die for different standards, for example, standards having different hardnesses.

  An object of this invention is to provide the vehicle seat pad which can know easily characteristic information, such as hardness, of each product.

  Another object of the present invention is to provide a vehicle seat pad that can be easily manufactured and managed in a variety of products.

  Furthermore, an object of the present invention is to provide a method for manufacturing the vehicle seat pad.

The above purpose is
A vehicle seat pad comprising a foamed resin body and auxiliary materials,
A vehicular seat pad, characterized in that an identification mark indicating the characteristic of the seat pad is provided on the auxiliary material in a state where the identification mark is visible;
It is in.

Preferred embodiments of the vehicle seat pad of the present invention are listed below.
(1) The auxiliary material is a reinforcing cloth (also called a supporter).
(2) The identification mark is a colored layer. Application is easy and visual recognition is also easy.
(3) The color of the identification mark is a layer colored directly on a part of the auxiliary material. Easy to apply.
(4) The seat pad characteristic is the hardness of the seat pad. The hardness is generally a hardness according to JIS-K-6400-2.
(5) The foamed resin is urethane foam.
(6) The seat pad is a back pad.

The present invention also provides
Using a molding die, foaming a resin composition together with a secondary material having an identification mark representing the characteristics of the seat pad, and manufacturing a vehicle seat pad having the identification mark visible. A vehicle seat pad manufacturing method characterized by: and using a molding die, the foamable resin composition is foam-molded together with an auxiliary material having an identification mark representing the characteristics of the seat pad, and the identification mark is visible The vehicle seat pad having a state is manufactured, and the foaming resin composition exhibiting different characteristics from the above using the same molding die as described above, the seat pad having the characteristics different from the above A vehicle seat pad, which is molded together with a secondary material having an identification mark different from the above, and has an identification mark different from the above in a visible state;
There is also.

  In the above manufacturing method, the preferred embodiment of the vehicle seat pad of the present invention can also be applied.

  In the vehicle seat pad of the present invention, an identification mark indicating the seat pad characteristic information is provided as a secondary material. For example, characteristics such as hardness of each seat pad can be immediately known, so that one type of size can be obtained. Alternatively, even if two or more kinds of standards (for example, hardness) are used for the shape, they can be easily distinguished from each other, so that the manufacture is facilitated. In addition, since the identification mark is provided on the auxiliary material (particularly the reinforcing cloth), it is smaller and lighter than the case where it is provided on the pad main body, so that the workability is excellent, and therefore the productivity is improved.

  Therefore, it can be said that the vehicle seat pad of the present invention is easy to manufacture various products and manage products.

  The vehicular seat pad of the present invention is provided in an auxiliary material in a state where an identification mark representing the characteristics of the seat pad is visible. First, the manufacturing method of the said vehicle seat pad of this invention is demonstrated. Hereinafter, the back pad of the seat pads will be described as an example.

  The figure for demonstrating one example of the manufacturing method of the vehicle seat pad of this invention is shown to Fig.1 (a)-(d). The molding die 10 is rotatably provided via a lower mold 12 that is recessed so as to mold the surface side portion of the pad main body, and a hinge portion disposed on one side of the lower mold 12. An upper die 13 for opening and closing the upper surface opening of the die 12 is provided. The upper mold 13 is a mold that molds the back side of the pad main body. By closing the upper surface opening of the lower mold 13, a cavity that is a foaming space corresponding to the pad shape is formed between the upper mold 13 and the lower mold 12.

  A reinforcing cloth 14 having a blue colored layer (colored region) 14a is set on the upper mold 13 (a). Generally, it is set on the core of the upper mold 13. Of course, the colored layer 14a may have any color. Next, after injecting the urethane foam-forming resin composition 16 into the cavity of the lower mold 12 using an injector (not shown) (b), the upper mold 13 is closed and the cavity is sealed, thereby urethane. The foam-forming resin composition is filled into the cavities while being foamed (c).

  In this way, by foaming and filling the polyurethane foam-forming resin composition in the cavity, the back pad 17 made of urethane foam is foam-molded, and the reinforcing cloth 14 having the blue colored layer 14a on the back surface is integrally formed. Molded. After molding, the back pad 17 of the present invention is obtained by removing the mold after opening the upper mold 13 (d).

  Foam molding is generally performed under conditions of room temperature to 120 ° C. and 1 to 30 minutes (preferably room temperature to 100 ° C. and 5 to 20 minutes), although it depends on the resin composition for forming urethane foam.

  In the above method, one type of back pad 17 having a specific standard having a specific hardness is obtained. Using this same mold, a back pad having a hardness different from the above but the same shape as the above is manufactured. can do. In this case, in the present invention, the color of the colored layer 14a of the reinforcing cloth 14 is changed to another color (for example, red), and the reinforcing cloth 14 having a red colored layer is used. Due to the presence of the colored layer, it is very easy to visually recognize that the back pads have the same shape even if they have the same shape.

  The colored layer 14a may be formed by directly coloring a reinforcing cloth (secondary material) or a colored cloth or the like may be attached. Moreover, the colored layer should just be visually recognizable, and the position is not limited. The colored layer may have any shape. Alternatively, colored numbers, letters, etc. may be provided on a cloth or the like. The numbers and characters may represent other information.

  Although the back pad has been described in the above manufacturing method, the seat cushion pad on which an occupant sits can be manufactured in the same manner.

  FIG. 2 shows a perspective view of an example of a vehicle seat provided with the vehicle seat pad of the present invention that can be advantageously obtained by the manufacturing method described above. The vehicle seat includes a seat cushion pad 22 and a back pad 23. The seat cushion pad 22 has a center portion 22M in the left-right width direction and left and right side portions 22S. The back pad 23 has a central portion 23M in the left-right width direction and left and right side portions 23S. A reinforcing cloth having a colored layer is provided on the back surfaces of the center portions 22M and 23M in the left-right width direction and the left and right side portions 22S and 23S.

  FIG. 3 shows a plan view of an example of the back pad 23 constituting the seat pad of FIG.

  The back pad 23 has a central portion 23M in the left-right width direction and left and right side portions 23S. A reinforcing cloth 24 (see FIG. 4) having a colored layer 24a is provided on the back surface of the central portion 23M in the left-right width direction and the left and right side portions 23S. In the upper part of the back pad main body 23, for example, a through hole for fitting a headrest mounting protrusion may be provided.

  An example of a cross-sectional view in the width direction of the back pad 33 is shown in FIG. In FIG. 4, a reinforcing cloth 24 having a colored layer 24 a is provided on the center portion 23 </ b> M in the left-right width direction of the back pad 23 and the back surfaces of the left and right side portions 23 </ b> S.

  As described above, in the vehicle seat pad of the present invention, the identification mark indicating the characteristic information of the seat pad is provided by the auxiliary material such as the reinforcing cloth. Therefore, since characteristics such as hardness of each seat pad can be immediately known, even if two or more kinds of standards (for example, hardness) are used for one kind of size or shape, it can be easily manufactured. . That is, for example, it is easy to manufacture back pads having the same shape but different hardness using the same mold. In addition, change of hardness etc. is generally performed by the mixing | blending and density change of a foamable resin composition. As described above, since characteristics such as hardness of the seat pad can be easily identified, management can be facilitated.

  In addition, this makes it possible to provide each user with a seat pad having a hardness suitable for the preference of the end user. For example, when the end user purchases an automobile, the preferred pad hardness can be designated. In addition, in the conventional management method, in order to prepare products of various types of hardness with pads of the same shape (same standard), the standard number must be changed and identified, and a new mold is required. .

  Therefore, it can be said that the vehicle seat pad of the present invention is easy to manufacture various products and manage products.

  Alternatively, the pad may be identified by replacing only the stamped portion of the mold.

  The seat pad body is a foamed resin, generally a urethane foam, and is preferably a flexible urethane foam, a semi-rigid urethane foam, particularly a flexible urethane foam. A commercially available material (foamable resin composition) can be used.

  The foamable resin composition for forming the foamed resin is preferably a urethane foam-forming resin composition. The resin composition for forming urethane foam is generally a mixture of an alcohol component such as polyether polyol, polyester polyol or polymer polyol, and a polyol component containing water, a polyisocyanate component such as tolylene diisocyanate and diphenylmethane diisocyanate, and a foaming agent. What is formed is common.

  As the polyether polyol, a polyoxyalkylene polyol in which a polyfunctional alcohol compound is used as an initiator and an alkylene oxide is added thereto is preferably used. Examples of the polyfunctional alcohol compound include ethylene glycol, propylene glycol, glycerin, trimethylolpropane, triethanolamine, diethanolamine, and compounds obtained by adding a small amount of alkylene oxide to these. Also, the alkylene oxide that undergoes addition polymerization is preferably one having 2 or more carbon atoms, such as ethylene oxide, 1,2-propylene oxide, 1,2-butylene oxide, 2,3-butylene oxide, styrene oxide. Etc. Among these alkylene oxides, those containing propylene oxide and / or butylene oxide in combination with ethylene oxide and containing an oxyethylene unit at the terminal are preferable.

  The polymer polyol is obtained by dispersing polymer particles in the form of fine particles in a polyol compound. Examples of the polymer particles include addition polymerization polymers such as homopolymers or copolymers of vinyl monomers such as acrylonitrile, styrene, alkyl methacrylate, and alkyl acrylate, and condensation polymerization polymers such as polyester, polyurea, and melamine resin. As a method for introducing such polymer particles into a polyol compound, for example, when the polymer particles are an addition polymerization polymer, styrene, acrylonitrile, etc. in a polyol such as polyoxyalkylene polyol in the presence of a radical polymerization initiator. And a method of polymerizing the vinyl monomer.

  The polyisocyanate component is a mixture of tolylene diisocyanate (TDI) and diphenylmethane diisocyanate (MDI) (including purified MDI (p-MDI) and crude MDI (c-MDI)). Although not limited, it is preferably 10/90 to 90/10 in weight ratio.

  Water is used as a foaming agent and is preferably blended in an amount of 2 to 4 parts by weight with respect to 100 parts by weight of the polyol compound. When the amount of water exceeds 4 parts by weight, foaming is excessive when forming a back pad by reduced pressure molding, and it becomes difficult to ensure sufficient hardness.

  As the foam stabilizer, various silicone foam stabilizers such as dimethylsiloxane, polyether dimethylsiloxane, and phenylmethylsiloxane are preferably used, and the amount used is an active ingredient with respect to 100 parts by weight of the polyol compound. Is usually 0.01 to 5 parts by weight.

  In addition to the above, the polyurethane foam raw material is usually blended with a catalyst, and various additives such as a crosslinking agent, an emulsifier, an antioxidant, an ultraviolet absorber, an anti-aging agent, a filler, a flame retardant, and a plasticizer. An agent can be added as necessary.

  Examples of the catalyst include triethylenediamine, bis (N, N-dimethylamino-2-ethyl) ether, N, N, N ′, N′-tetramethylhexamethylenediamine, and bis (2-dimethylaminoethyl) ether. An amine-based catalyst is preferably used, and the amount used is usually 0.05 to 10 parts by weight with respect to 100 parts by weight of the polyol compound. In particular, in order to promote initial foaming, it is preferable to use an unblocked immediate-acting amine catalyst rather than a block-type catalyst.

  Reinforcing cloth (supporter) is generally integrated by foam molding of a foamable resin composition so as to cover the back surface of the back pad body, the inner surface of the upper part of the pad, and the inner surface of the overhanging portion of the "U". Has been. The reinforcing fabric can be used without any particular limitation as long as it has appropriate air permeability and can prevent the foamable resin composition from leaching out during molding, and can be used as a nonwoven fabric or a woven or knitted fabric. Or these laminated composites etc. can be used. Furthermore, it is also possible to use walif, cold chill, coarse wool felt, slab urethane and the like. The thickness of the reinforcing fabric is generally in the range of 0.1 to 5 mm, particularly 0.5 to 2 mm.

  This reinforcing cloth is generally formed into a bag shape by sewing a base fabric cut into a predetermined shape, or using fasteners such as staples and tag pins (pins commonly used for fastening tags such as plastic staples). Has been. The reinforcing cloth is mounted in a mold (for example, mounted on a core) and laminated and integrated on the back surface thereof by foam molding of the back pad main body.

  As an auxiliary material, urethane chips can be cited in addition to the reinforcing cloth.

  Formation of a colored layer on a secondary material such as a reinforcing cloth can be performed by dyeing with various dyes, application with a color ink, a color paint, or the like. Alternatively, a colored cloth, paper, film, or the like may be attached.

  As described above, the vehicle seat pad of the present invention can easily know characteristic information such as hardness, and facilitates multi-product manufacturing and product management.

It is a figure for demonstrating one example of the manufacturing method of the seat pad of this invention. The perspective view of one example of the vehicle seat provided with the vehicle seat pad of the present invention is shown. It is a front view of one example of an embodiment of a back pad of the present invention. FIG. 4 is a sectional view taken along line A-A ′ of FIG. 3.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Molding die 12 Lower mold 13 Upper mold 14, 24 Reinforcement cloth 14a, 24a Colored layer 16 Resin composition for urethane foam formation 17 Seat pad 22 Seat cushion pad 23 Back pad 23M Central part 23S Side part

Claims (11)

A vehicle seat pad comprising a foamed resin body and auxiliary materials,
A vehicular seat pad, characterized in that an identification mark representing the characteristics of the seat pad is provided on the auxiliary material in a state where the identification mark is visible.   The vehicle seat pad according to claim 1, wherein the auxiliary material is a reinforcing cloth.   The vehicle seat pad according to claim 1, wherein the identification mark is a colored layer.   The vehicle seat pad according to claim 3, wherein the colored layer is a layer directly colored on a part of the auxiliary material.   The vehicle seat pad according to any one of claims 1 to 4, wherein the characteristic of the seat pad is hardness.   Using a molding die, foaming a resin composition together with a secondary material having an identification mark representing the characteristics of the seat pad, and manufacturing a vehicle seat pad having the identification mark visible. A method for manufacturing a vehicle seat pad, which is characterized.   Using a molding die, foaming the foamable resin composition together with an auxiliary material having an identification mark representing the characteristics of the seat pad, producing a vehicle seat pad having the identification mark in a visually recognizable state, and Using the same molding die as described above, a foamable resin composition exhibiting characteristics different from the above is molded together with a secondary material having an identification mark different from the above indicating that the seat pad has characteristics different from the above, A vehicle seat pad manufacturing method comprising manufacturing a vehicle seat pad having an identification mark different from the above in a visible state.   The method for manufacturing a vehicle seat pad according to claim 6 or 7, wherein the auxiliary material is a reinforcing cloth.   The method for manufacturing a vehicle seat pad according to any one of claims 6 to 8, wherein the identification mark is a colored layer.   The method for manufacturing a vehicle seat pad according to claim 9, wherein the colored layer is a layer directly colored on a part of the auxiliary material.   The method for manufacturing a vehicle seat pad according to any one of claims 6 to 10, wherein the characteristic of the seat pad is hardness.

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