JP6890866B2 - A method for manufacturing a seat skin material and a mold device used for manufacturing a seat skin material. - Google Patents

Description

The present invention relates to a method for manufacturing a seat skin material having a three-dimensional pattern, and a mold device used for manufacturing the seat skin material.

Seats for vehicles such as automobiles, buses, and railroads, furniture seats for sofas, chairs, etc., are embossed to enhance the design of the skin material for seats, and recesses are formed on the surface. It is used. By embossing, the surface of the seat skin material becomes three-dimensional, and suitable decorativeness can be imparted. Further, the tactile sensation can be suitably changed by forming the concave portion.

Patent Document 1 describes conventional embossing of a seat skin material. According to the method disclosed in this document, a plate material (laminate) used as a material for a seat skin material is sandwiched between a heated design mold (molding mold) and a hot plate. As a result, a recess (embossed pattern) is formed on the surface of the plate material.

FIG. 5 is a cross-sectional view schematically showing an embossing mode of Patent Document 1. As shown in the figure, the design die 101 is provided with an embossed portion 103 that protrudes from the base surface 102 that extends in a plane. The embossed portion 103 is a plurality of square columnar protrusions arranged side by side in the first direction (horizontal direction in the drawing) which is one direction and extending in the second direction (direction orthogonal to the paper surface in the drawing) which is the other direction. Has 104. These plurality of protrusions 104 are set to have the same protrusion length as each other.

On the other hand, the hot plate 106 has a flat plate shape that extends parallel to the base surface 102. Then, the plate material 110 on the hot plate 106 is sandwiched between the plate material 110 and the design mold 101. At this time, the embossing portion 103 heats and presses the surface of the plate material 110 to form a recess 111 composed of a plurality of elongated grooves 112 on the surface. The plurality of elongated grooves 112 have the same amount of dents as each other. In this way, the seat skin material P1 having a three-dimensional pattern (embossed pattern) on the surface is manufactured.

Japanese Unexamined Patent Publication No. 2005-261581

By the way, the arrangement portion of the recess 111 formed on the surface of the plate material 110 by the embossing of Patent Document 1 is set according to the design of the seat skin material P1. In other words, the design of the seat skin material P1 is determined by the appearance of the recess 111 formed on the surface of the plate material 110. On the other hand, the hardness of the seat skin material P1 is determined by its thickness. Therefore, simply considered, the hardness of the seat skin material P1 becomes hard at the portion where the recess 111 is relatively thin, and becomes soft at the non-arranged portion of the recess 111 which becomes relatively thick.

As described above, the hardness of the seat skin material P1 is restricted by the design of the seat skin material P1.
An object of the present invention is to provide a seat skin material capable of adjusting the hardness while suppressing design restrictions, a method for manufacturing the seat skin material, and a mold device used for manufacturing the seat skin material. ..

A method for manufacturing a skin material for a seat that solves the above problems is a heated design die provided with a first die stamping portion protruding from the first base surface and a second die pressing portion protruding from the second base surface. The plate material is sandwiched between the back mold in a heated state provided with the above plate material, and the plate material is heated and pressed by the first mold pressing portion and the second mold pressing portion so as to face at least the design mold of the plate material. The step of forming a concave portion on the design surface is provided, and the first die pressing portion and the second die pressing portion have different shapes when viewed in the sandwiching direction of the plate material.

According to this configuration, the design of the seat skin material is mainly determined by the appearance of the recess formed on the design surface of the plate material by heating and pressing by the first die pressing portion. On the other hand, the hardness of the seat skin material is determined by the thickness of the plate material which is reduced by the heating pressure by the first die pressing portion and the second die pressing portion. The first embossed portion and the second embossed portion have different shapes when viewed in the sandwiching direction of the plate material. For example, the thickness of the plate material in the deepest portion of the recess is determined by the arrangement portion of the recess. It changes according to the shape of the second embossing portion corresponding to. Therefore, for example, the thickness, that is, the hardness of the plate material can be changed according to the arrangement portion of the recesses without changing the appearance of the recesses formed on the design surface of the plate material. In this way, the hardness of the seat skin material can be adjusted while suppressing the restrictions on the design.

The mold device that solves the above problems is a mold device used for manufacturing a skin material for a seat, and is a heated design mold provided with a first mold pressing portion that protrudes from the first base surface. The back mold in a heated state is provided with a second die stamping portion protruding from the second base surface, and the first die pressing portion and the second die pressing portion exhibit different shapes when viewed in opposite directions. ..

According to this configuration, a plate material used as a material for a seat skin material is sandwiched between the design mold and the back mold, and the plate material is heated and pressed by the first mold pressing portion and the second mold pressing portion. For example, a recess is formed in at least the design surface of the plate material facing the design mold. The design of the seat skin material produced in this way is mainly determined by the appearance of the recess formed on the design surface of the plate material by heating and pressing by the first die pressing portion. On the other hand, the hardness of the seat skin material is determined by the thickness of the plate material which is reduced by the heating pressure by the first die pressing portion and the second die pressing portion. The first stamped portion and the second stamped portion have different shapes when viewed in the opposite direction, that is, when viewed in the sandwiching direction of the plate material, so that, for example, the thickness of the plate material in the deepest portion of the recess is formed. Changes according to the shape of the second embossing portion corresponding to the arrangement portion of the recess. Therefore, for example, the thickness, that is, the hardness of the plate material can be changed according to the arrangement portion of the recesses without changing the appearance of the recesses formed on the design surface of the plate material. In this way, the hardness of the seat skin material can be adjusted while suppressing the restrictions on the design.

The seat skin material that solves the above problems is a seat skin material in which recesses are formed in a compressed state on at least one design surface, and the thickness of the deepest portion of the recesses depends on the location of the recesses. Change.

According to this configuration, the design of the seat skin material is determined by the appearance of the recess formed on the design surface. On the other hand, the hardness of the seat skin material is determined by its thickness. The thickness of the deepest portion of the recesses of the seat skin material changes according to the location of the recesses, so that the recesses can be arranged without changing the appearance of the recesses formed on the design surface. The thickness, that is, the hardness of the seat skin material can be changed accordingly. In this way, the hardness of the seat skin material can be adjusted while suppressing the restrictions on the design.

The seat skin material is arranged in a holding portion which is at least one of a seat cushion and a seat back, and the thickness of the deepest portion of the recess is smaller in the central portion than in both ends in the width direction of the holding portion. It is preferable to set.

According to this configuration, the holding portion is relatively hard at the central portion in the width direction and relatively soft at both ends in the width direction, if simply considered. Therefore, the holding portion can hold the seated person more firmly at the central portion in the width direction, and can hold the seated person more comfortably at both end portions in the width direction.

The present invention has the effect of suppressing restrictions on the design and adjusting the hardness.

The perspective view which shows the seat seat to which the 1st Embodiment is applied. The perspective view which shows the structure of the skin material for a seat of the same embodiment. (A) is a cross-sectional view showing a manufacturing method of the seat skin material of the same embodiment and a mold device used for the manufacturing thereof, and (b) is a cross-sectional view showing the structure of the seat skin material of the same embodiment. Figure. FIG. 2 is a perspective view showing a manufacturing method thereof and a mold apparatus used for manufacturing the second embodiment. The cross-sectional view which shows the manufacturing method and the mold apparatus used for manufacturing about the conventional form of the skin material for a seat.

(First Embodiment)
Hereinafter, the first embodiment will be described.
As shown in FIG. 1, the seat 10 of an automobile includes a seat cushion 11 and a seat back 16 as holding portions constituting a seat portion and a backrest portion of a seated person, respectively. The seat cushion 11 has a main support portion 12 extending in the middle portion in the width direction, and a pair of side support portions 13 projecting upward from both end portions in the width direction of the main support portion 12. The rear end portion of the main support portion 12 is covered with a cushion skin material 14 having a three-dimensional pattern (embossed pattern). Similarly, the seat back 16 has a main support portion 17 extending in the middle portion in the width direction thereof, and a pair of side support portions 18 projecting forward from both end portions in the width direction of the main support portion 17. The lower end of the main support portion 17 is covered with a back skin material 19 having a three-dimensional pattern.

Next, the structure of the seat skin material P used for the cushion skin material 14 and the back skin material 19 will be described.
As shown in FIG. 2, the seat skin material P is formed by heat-sealing the outer material 21, the lining 22, and the cushion material 23 sandwiched between the outer material 21 and the lining 22 with each other in a pressurized state. It is laminated and integrated.

The materials of the outer material 21 and the lining 22 are not particularly limited. As the material of the outer material 21 and the lining 22, woven fabrics, knitted fabrics, non-woven fabrics, synthetic leathers, artificial leathers, or composite materials thereof can be selected and used. For example, natural fibers such as cotton, linen and silk, recycled fibers such as acetate and cupra, and synthetic fibers such as nylon, polyurethane and polyester can be selected and used. The outer material 21 can be selected from the viewpoint of imparting decorativeness to the seat skin material P, and the lining 22 can be selected from the viewpoint of protecting the internal cushion material 23. The materials of the outer material 21 and the lining 22 may be different or the same.

The material of the cushion material 23 is not particularly limited, and a material having appropriate flexibility suitable for the seat 10 can be selected and used. For example, synthetic resin foams such as polyurethane foam, polystyrene foam, polyethylene foam, polypropylene foam, phenol foam, silicone foam, acrylic foam, and polyimide foam can be preferably mentioned.

The above-mentioned three-dimensional pattern of the seat skin material P is mainly formed on the surface of the outer material 21 side. That is, the design surface 24, which is at least one surface of the seat skin material P, is formed with recesses 25 composed of a plurality of U-shaped elongated grooves 25a, 25b, 25c, 25d, 25e. Needless to say, the recess 25 is formed in a compressed state. These plurality of elongated grooves 25a to 25e are arranged side by side at equal intervals in the first direction D1 (the left-right direction shown and corresponding to the width direction of the seat 10) in one direction, and the second direction D2 (the second direction D2) in the other direction. In the diagonally vertical direction shown in the drawing, the cushion skin material 14 communicates with the front-rear direction of the seat seat 10, and the back skin material 19 communicates with the seat seat 10 in the vertical direction. That is, the three-dimensional pattern of the seat skin material P is a striped pattern extending in the second direction D2.

The plurality of elongated grooves 25a to 25e have width dimensions equivalent to each other. Further, assuming that the thicknesses of the seat skin material P in the deepest portions of the plurality of elongated grooves 25a to 25e are the thicknesses ta, tb, tk, td, and te, the thicknesses ta to te satisfy the following relationship.

ta = te> tb = td> tc
That is, the thickness ta to te of the seat skin material P in the deepest part of the recess 25 changes depending on the arrangement portion of the recess 25 (long groove 25a to 25e). That is, the thickness ta to te of the seat skin material P in the deepest portion of the recess 25 becomes smaller as it approaches the central portion and increases as it moves away from the central portion in the first direction D1. As a result, the seat skin material P becomes harder as it approaches the central portion and becomes softer as it moves away from the central portion in the first direction D1.

Next, a method of manufacturing the seat skin material P will be described.
As shown in FIG. 3A, the mold device 50 used for manufacturing the seat skin material P includes a design mold 51 and a hot plate 56 as a back mold. The design mold 51 is in a state of being heated by an appropriate heating mechanism (not shown), and is provided with a first mold pressing portion 53 that protrudes from the first base surface 52 that spreads out in a plane. The first die-pressing portion 53 is arranged side by side at equal intervals in the first direction D1 (horizontal direction in the drawing) and extends in the second direction D2 (direction orthogonal to the paper surface in the drawing). Has. These plurality of protrusions 54 are set to have the same width dimension and protrusion length as each other.

On the other hand, the hot plate 56 is in a state of being heated by an appropriate heating mechanism (not shown), and is provided with a second embossing portion 58 protruding from the second base surface 57 that spreads out in a plane. The second stamping portion 58 has a square columnar first protrusion 59a arranged in the central portion in the first direction D1 and extending in the second direction D2, and the first protrusion 59a in the first direction D1. It has a pair of square columnar second protrusions 59b arranged on both sides of the above and extending in the second direction D2. Further, the second embossed portion 58 has a pair of square columnar third protrusions 59c arranged on both sides of both second protrusions 59b in the first direction D1 and extending in the second direction D2. The protrusion lengths of the first to third protrusions 59a to 59c are set to be gradually shortened in that order. Further, the first to third protrusions 59a to 59c adjacent to each other in the first direction D1 are integrated so as to be connected in the first direction D1. That is, the second embossing portion 58 is formed so as to project stepwise in a trapezoidal shape from both sides in the first direction D1 toward the center. The range of the first to third protrusions 59a to 59c in the first direction D1 is set to include any one of the protrusions 54.

The plate material 60, which is the material of the seat skin material P, is arranged between the lining 22 side and the design mold 51 in a state of being placed on the hot plate 56. It goes without saying that the first stamped portion 53 and the second stamped portion 58 have different shapes when viewed in the opposite direction, that is, when viewed in the sandwiching direction D3 (vertical direction in the drawing) of the plate member 60.

Then, in the production of the skin material P for the seat, the plate material 60 is sandwiched between the design mold 51 and the hot plate 56, and the plate material 60 is heated and pressed by the first die pressing portion 53 and the second die pressing portion 58. Have a process. At this time, the separation distance between the design mold 51 and the hot plate 56 is set so that the first base surface 52 of the design mold 51 does not come into contact with the design surface 60a facing the design mold 51 of the plate material 60. Further, the separation distance between the design mold 51 and the hot plate 56 is set so that the entire back surface 60b of the plate material 60 comes into contact with the hot plate 56.

As a result, as shown in FIG. 3B, the outer material 21, the lining 22 and the cushion material 23 are heat-sealed to each other while forming the recesses 25 (long grooves 25a to 25e) on at least the design surface 60a of the plate material 60. The skin material P for the seat is manufactured. Therefore, the seat skin material P is in a compressed state at the arrangement portion of the recess 25. The long groove 25c that minimizes the thickness ta to te of the seat skin material P at the deepest portion of the recess 25 is formed by the first protrusion 59a that maximizes the protrusion length from the second base surface 57. The long grooves 25b and 25d in which the thicknesses ta to te of the seat skin material P in the deepest portion of the recess 25 are in the middle are formed by the second protrusion 59b in which the protrusion length from the second base surface 57 is in the middle. The elongated grooves 25a and 25e having the maximum thickness ta to te of the seat skin material P in the deepest portion of the recess 25 are formed by the third protrusion 59c having the minimum protruding length from the second base surface 57.

In the figure, the cross-sectional shape of the seat skin material P is drawn so that the recess 25 is formed only on the design surface 60a. However, for example, depending on the material of the lining 22, a similar recess may be formed on the back surface 60b by being pulled by the recess 25. Alternatively, a recess may be formed on the back surface 60b by heating and pressing by the second mold pressing portion 58. Then, a similar recess may be formed on the design surface 60a by being pulled by the recess on the back surface 60b. That is, the design surface 60a may be provided with a three-dimensional pattern by the cooperation of the first stamped portion 53 and the second stamped portion 58. However, regardless of the presence or absence of the recesses on the back surface 60b, the relationship between the thicknesses ta to te of the above-mentioned seat skin material P, which changes according to the arrangement portion of the recesses 25 (long grooves 25a to 25e), does not change.

Here, the protruding length of the first die pushing portion 53 (protruding portion 54) of the design mold 51 is preferably set to 0.1 to 15 mm. If the protruding length of the first die-pressing portion 53 is 0.1 to 15 mm, not only a striped pattern but also an arbitrary three-dimensional pattern such as a border, a checkerboard, or a random pattern can be realized. The undulations (steps) between the adjacent first to third protrusions 59a to 59c of the second mold pressing portion 58 of the hot plate 56 are preferably set to about several mm.

Further, the mold temperature of the design mold 51 and the hot plate 56 is preferably set to 60 to 200 ° C. Further, the embossing time by the design mold 51 and the hot plate 56 is preferably set to 20 to 180 seconds. For example, it is more preferable to set the embossing time to 60 seconds when the mold temperature is 180 ° C.

The materials of the design mold 51 and the hot plate 56 are not particularly limited. For example, special steels classified into machine structural steels, tool steels, and stainless steels, superhard alloys of non-ferrous materials, aluminum alloys, copper alloys, and the like can be preferably mentioned.

On the other hand, the thickness of the cushion material 23 of the plate material 60 is preferably set to 3 to 12 mm. When the thickness of the cushion material 23 is 12 mm or more, it is necessary to increase the protruding length of the first mold pushing portion 53 (protruding portion 54), which is not preferable. Further, the specific gravity of the cushion material 23 is preferably set to 20 to ^{60 kg / m 3.} When the specific gravity of the cushion material 23 is 60 kg / m ³ or more, the overall feeling becomes hard and the seat skin material P becomes hard, which is not preferable.

The operation and effect of this embodiment will be described.
(1) In the present embodiment, the design of the seat skin material P is mainly determined by the appearance of the recesses 25 (long grooves 25a to 25e) formed on the design surface 60a of the plate material 60 by heating and pressing by the first mold pressing portion 53. Will be done. On the other hand, the hardness of the seat skin material P is determined by the thickness of the plate material 60 which is reduced by the heating pressure by the first die-pressing portion 53 and the second die-pressing portion 58. The first embossed portion 53 and the second embossed portion 58 have different shapes when viewed in the sandwiching direction D3 of the plate member 60, so that, for example, the thickness ta to te of the seat skin material P in the deepest portion of the recess 25. Changes depending on the arrangement portion of the recess 25 (long grooves 25a to 25e). Therefore, for example, the thickness, that is, the hardness of the plate 60 can be changed according to the arrangement portion of the recess 25 without changing the appearance of the recess 25 formed on the design surface 60a of the plate 60. In this way, the hardness of the seat skin material P can be adjusted while suppressing the restrictions on the design. That is, a three-dimensional pattern (embossed pattern) can be given to the seat skin material P while leaving the thickness of the plate material 60 (cushion material 23) in the portion where the cushioning property of the seat skin material P is required.

(2) In the present embodiment, the thickness of the cushion skin material 14 (seat skin material P) at the deepest portion of the recess 25 is such that the central portion is at both ends in the width direction (first direction D1) of the seat cushion 11. Is set smaller than. Therefore, the seat cushion 11 (main support portion 12) is relatively hard at the central portion in the width direction and relatively soft at both end portions in the width direction, if simply considered. Therefore, the seat cushion 11 (main support portion 12) can hold the seated person more firmly at the central portion in the width direction, and can hold the seated person more comfortably at both end portions in the width direction.

Similarly, the thickness of the deepest portion of the recess 25 of the cushion skin material 14 (seat skin material P) is set to be smaller at the central portion than at both ends in the width direction (first direction D1) of the seat back 16. ing. Therefore, the seat back 16 (main support portion 17) is relatively hard at the central portion in the width direction and relatively soft at both end portions in the width direction, if simply considered. Therefore, the seat back 16 (main support portion 17) can hold the seated person more firmly at the central portion in the width direction, and can hold the seated person more comfortably at both end portions in the width direction.

(3) In the present embodiment, the heat plate 56 has undulations due to the first to third protrusions 59a to 59c, so that the seat skin material P (cushion skin material 14, back skin material 19) has an uneven feeling and a plate material. The residual thickness of 60 (cushion material 23) can be partially controlled, and the seating comfort and holdability of the seat 10 can be further improved.

Further, the depth of the recesses 25 (long grooves 25a to 25e) of the seat skin material P (cushion skin material 14, back skin material 19) can be partially controlled, and a sharp design with excellent decorativeness can be realized.

(Second Embodiment)
Hereinafter, the second embodiment will be described. Since the second embodiment has a configuration in which the manufacturing method of the seat skin material P of the first embodiment is changed, detailed description of the same parts will be omitted.

As shown in FIG. 4, the mold device 70 used for manufacturing the seat skin material P includes a design roll 71 as a design mold and a receiving roll 76 as a back mold. The design roll 71 is in a state of being heated by an appropriate heating mechanism (not shown), and is provided with a first stamping portion 73 protruding from the first base surface 72 that spreads out in a cylindrical shape. A plurality of the first mold pushing portions 73 are arranged side by side at equal intervals in the first direction D11 (the left-right direction shown and corresponding to the width direction of the seat 10), which is one direction, and extend over the entire length in the circumferential direction. It has an annular protrusion 74 of. These plurality of protrusions 74 are set to have the same width dimension and protrusion length as each other. When the circumferential direction of the protrusion 74 is developed in a straight line, the extension direction is the front-rear direction of the seat seat 10 in the cushion skin material 14 and the vertical direction of the seat seat 10 in the back skin material 19. Equivalent to.

On the other hand, the receiving roll 76 is in a state of being heated by an appropriate heating mechanism (not shown), and is provided with a second stamping portion 78 protruding from the second base surface 77 that spreads out in a cylindrical shape. The second stamping portion 78 has an annular first protrusion 79a arranged at the center in the first direction D11 and extending over the entire length in the circumferential direction, and the first protrusion 79a of the first protrusion 79a. It has a pair of annular second protrusions 79b arranged on both sides in the direction D11 and extending over the entire length in the circumferential direction. Further, the second embossing portion 78 has a pair of annular third protrusions 79c arranged on both sides of both second protrusions 79b in the first direction D11 and extending over the entire length in the circumferential direction. The protrusion lengths of the first to third protrusions 79a to 79c are set to be gradually shortened in this order. Further, the first to third protrusions 79a to 79c adjacent to each other in the first direction D11 are integrated so as to be connected in the first direction D11. That is, the second embossing portion 78 is formed so as to project in a flange shape stepwise from both sides toward the center in the first direction D11. The range of the first to third protrusions 79a to 79c in the first direction D11 is set to include any one of the protrusions 74.

In the production of the seat skin material P, a step of passing a long plate material 80 having a structure similar to that of the plate material 60 is provided between the rotating design roll 71 and the receiving roll 76. That is, a step of sandwiching the plate material 80 between the design roll 71 and the receiving roll 76 and heating and pressing the plate material 80 by the first die pressing portion 73 and the second die pressing portion 78 is provided. Needless to say, the first stamped portion 73 and the second stamped portion 78 exhibit different shapes when viewed in the sandwiching direction D13 (vertical direction in the drawing) of the plate member 80.

At this time, the separation distance between the design roll 71 and the receiving roll 76 is set so that the first base surface 72 of the design roll 71 does not come into contact with the design surface facing the design roll 71 of the plate material 80. Further, the separation distance between the design roll 71 and the receiving roll 76 is set so that the entire back surface of the plate material 80 comes into contact with the receiving roll 76.

Even with such a manufacturing method, the seat skin material P is similarly manufactured (see FIG. 3). In the present embodiment, the long groove 25c that minimizes the thickness ta to te of the seat skin material P in the deepest portion of the recess 25 is formed by the first protrusion 79a that maximizes the protrusion length from the second base surface 77. ing. The long grooves 25b and 25d in which the thicknesses ta to te of the seat skin material P in the deepest portion of the recess 25 are in the middle are formed by the second protrusion 79b in which the protrusion length from the second base surface 77 is in the middle. The elongated grooves 25a and 25e having the maximum thickness ta to te of the seat skin material P in the deepest portion of the recess 25 are formed by the third protrusion 79c having the minimum protruding length from the second base surface 77.

As described in detail above, according to the present embodiment, the following effects can be obtained in addition to the effects of the first embodiment.
(1) In the present embodiment, the seat skin material P can be efficiently manufactured by passing the long plate material 80 between the rotating design roll 71 and the receiving roll 76.

This embodiment can be modified and implemented as follows. The present embodiment and the following modified examples can be implemented in combination with each other within a technically consistent range.
-In the first embodiment, the shape of the second embossing portion 58 (first to third protrusions 59a to 59c) is arbitrarily formed according to the hardness required for each portion of the seat skin material P. You may change it. For example, the boundary positions of the adjacent first to third protrusions 59a to 59c may be arranged at the intermediate positions of the protrusions 54 of the first mold pushing portion 53. Alternatively, the boundary positions of the adjacent first to third protrusions 59a to 59c may be arranged between the adjacent protrusions 54. In short, it suffices that the plate member 60 has a shape different from that of the first stamping portion 53 when viewed in the sandwiching direction D3. However, it is preferable that at least a part of the tip surface of the second stamped portion 58 is a flat surface.

-In the second embodiment, the shape of the second embossing portion 78 (first to third protrusions 79a to 79c) is arbitrarily formed according to the hardness required for each portion of the seat skin material P. You may change it. For example, the boundary positions of the adjacent first to third protrusions 79a to 79c may be arranged at the intermediate positions of the protrusions 74 of the first stamping portion 73. Alternatively, the boundary positions of the adjacent first to third protrusions 79a to 79c may be arranged between the adjacent protrusions 74. In short, it suffices that the plate member 80 has a shape different from that of the first stamping portion 73 when viewed in the sandwiching direction D13. However, it is preferable that at least a part of the tip surface of the second die stamping portion 78 is a circumferential surface.

-In the second embodiment, it is preferable that the temperature of the design roll 71 and the receiving roll 76 is set individually.
-In the second embodiment, the materials of the design roll 71 and the receiving roll 76 are not particularly limited. For example, special steels classified into machine structural steels, tool steels, and stainless steels, superhard alloys of non-ferrous materials, aluminum alloys, copper alloys, and the like can be preferably mentioned.

-In each of the above-described embodiments, the thickness of the cushion skin material 14 (seat skin material P) at the deepest portion of the recess 25 is such that the central portion of the cushion skin material 14 (seat skin material P) is thicker than both ends in the width direction (first direction D1) of the seat cushion 11. May also be set large. Similarly, the thickness of the deepest portion of the recess 25 of the back skin material 19 (seat skin material P) is set to be larger at the central portion than at both ends in the width direction (first direction D1) of the seat back 16. You may.

-In each of the above-described embodiments, the shapes of the first embossed portions 53 and 73 may be arbitrarily changed according to the three-dimensional pattern given to the seat skin material P.
-In each of the above-described embodiments, the recess 25 of the seat skin material P may be composed of a plurality of recesses that are independent of each other, or may be composed of a series of recesses that draw a pattern. In short, the thickness of the deepest portion of the recess 25 may change depending on the location of the recess 25.

-In each of the above-described embodiments, the outer material 21 (design surface 60a) of the seat skin material P is provided with a three-dimensional pattern by the cooperation of the first stamped portions 53, 73 and the second stamped portions 58, 78. You may. That is, in addition to the three-dimensional pattern by the first stamped portions 53 and 73, the three-dimensional pattern by the second stamped portions 58 and 78 may be imparted to the outer material 21 of the seat skin material P. As a result, the degree of freedom in designing the seat skin material P can be further improved.

-In each of the above embodiments, the three-dimensional pattern given to the seat skin material P may be arbitrarily changed. For example, the three-dimensional pattern given to the seat skin material P is not limited to the vertical stripe pattern, but may be a horizontal stripe pattern, a diagonal stripe pattern, a mesh pattern, a polka dot pattern, or a combination thereof.

-In each of the above-described embodiments, the seat skin material P may be used only for either the seat cushion 11 or the seat back 16.
-In each of the above-described embodiments, the seat skin material P may be used for seats of vehicles such as buses and railways, and furniture seats such as sofas and chairs.

The technical idea that can be grasped from the above-described embodiment and modified example will be described.
(A) A method for manufacturing a seat skin material, wherein the design mold and the back mold are flat surfaces of the first base surface and the second base surface, respectively.

(B) The method for manufacturing a seat skin material, which is a design roll and a receiving roll, respectively, in which the design mold and the back mold are in a rotating state.

P ... Seat skin material, 11 ... Seat cushion (holding part), 16 ... Seat back (holding part), 24, 60a ... Design surface, 25 ... Recess, 50, 70 ... Mold device, 51 ... Design mold, 52, 72 ... 1st base surface, 53, 73 ... 1st die stamping part, 56 ... Hot plate (back mold), 57, 77 ... 2nd base surface, 58, 78 ... 2nd die stamping part, 60, 80 … Plate material, 76… Receiving roll (back mold).

Claims (4)

And the design mold heated state in which the first type pressing portion is provided with a first type押突portion a plurality of projecting from the first base surface, a second type押突portions plurality of protruding from the second base surface A plate material is sandwiched between a heated back mold provided with a second die stamping portion, and the plate material is heated and pressed by the first die pressing portion and the second die pressing portion to at least said the plate material. It is equipped with a heating and pressing process that forms a recess on the design surface facing the design mold.
The first-type pressing portion and the second-type pressing portion is caused a mutually different shapes when viewed in the pinching direction of the plate,
In the design mold and the back mold in a state where the plate material is sandwiched, the distance between the first mold pressing portion and the second mold pressing portion facing each other is a plurality of the first mold pushing portions and a plurality of. A method for manufacturing a skin material for a seat, which varies depending on the arrangement portion of the second type push-butt portion. In the heating pressing step, the separation distance between the design mold and the back mold is set so that the first base surface does not come into contact with the plate material and the entire plate material comes into contact with the back mold. Item 2. The method for manufacturing a seat skin material according to item 1. A mold device used to manufacture seat skin materials.
A heated design die provided with a first die pressing portion having a plurality of first die pressing portions protruding from the first base surface, and a design die in a heated state.
It is provided with a heated back mold provided with a second die pressing portion having a plurality of second die pressing portions protruding from the second base surface.
The first-type pressing portion and the second-type pressing portion is caused a mutually different shapes when seen in the opposing direction,
In a state where the design die and the back mold are arranged to face each other, the distance between the first die pushing portion and the second die pushing portion is such that the plurality of the first die pushing portions and the plurality of the second die pushing portions are arranged. A mold device that changes according to the location of the die stamping part. In the mold apparatus according to claim 3,
A mold device in which a plurality of the first mold pushing protrusions are formed to have the same protruding length as each other.

Images