JP2017193104A - Method for producing skin-integrated foamed product - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for producing a skin-integrated foamed product capable of suppressing a molding defect.SOLUTION: Provided is a method for producing a headrest 10 where a plurality of skin pieces 21 are sewn to form a bag body 20, further, a slit opening 20K to form into the gateway of the bag body 20 between a pair of adjacent skin pieces 21, 21, an urethane foam raw material 35 is injected from the slit opening 20K, and the urethane foam raw material 35 is foam-cured in the bag body 20. The pair of skin pieces 21, 21 are respectively provided with tongue pieces 27 projecting from the edge part of the slit opening 20K to the inside of the bag body 20. When the urethane foam raw material 35 is foam-cured, the bag body 20 is arranged in such a manner that the slit opening 20K is released toward an obliquely upper part, and the pair of tongue pieces 27, 27 are arranged so as to be overlapped up and down. In this invention, a first tongue piece 27A arranged at the lower side in the pair of tongue pieces 27, 27 is made longer than a second tongue piece 27B arranged at the upper side.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a method for manufacturing a skin-integrated foamed product, in which a foamed resin material is injected into a bag formed by sewing a plurality of skin pieces into a bag shape, and the foamed resin material is foamed and cured in the bag.

  2. Description of the Related Art Conventionally, in this type of method for manufacturing a skin-integrated foam product, slit openings serving as bag doors are formed between a pair of adjacent skin pieces, and a slit opening is formed in each of the pair of skin pieces. What is provided with the tongue piece which protrudes inward of a bag body from the edge part of this is known (for example, refer patent document 1).

JP 2014-136597 A (paragraphs [0022] to [0023], FIG. 4)

  By the way, in the manufacturing method of the above-mentioned skin-integrated foamed product, for example, in order to spread the foamed resin throughout the bag body, when the foamed resin raw material is foam-cured, the foaming mold is inclined, etc. The bag body is arranged so as to face diagonally upward, and as a result, a pair of tongue pieces provided on a pair of skin pieces may be stacked one above the other. However, when the bag body is arranged in this way, the lower tongue piece rides on the upper tongue piece in the process in which the foamed resin raw material is foamed and cured, and the slit opening varies or the foam resin from the slit opening. There was a problem that the raw material leaked and molding defects occurred.

  An object of this invention is to provide the manufacturing method of a skin-integrated foam product which can suppress a shaping | molding defect.

  In order to achieve the above object, the invention of claim 1 is characterized in that a plurality of skin pieces are sewn into a bag shape to form a bag body, and the bag body is formed between a pair of adjacent skin pieces. A method of manufacturing a skin-integrated foamed product, wherein a slit opening serving as an entrance / exit is formed, a foamed resin raw material is injected from the slit opening, and the foamed resin raw material is foam-cured in the bag body, wherein the pair of skin pieces Each is provided with a tongue that protrudes from the edge of the slit opening to the inside of the bag body, and when the foamed resin material is foam-cured, the slit opening opens obliquely upward. In the manufacturing method of a foam integrated foam product in which the bag body is arranged and the pair of tongue pieces are stacked one above the other, when the foamed resin raw material is foam-cured among the pair of tongue pieces, The first tongue placed on the upper side Is a long and to keep the manufacturing method of the integral skin foam products than arranged as a second tongue.

  Invention of Claim 2 is a manufacturing method of the skin integrated foam article of Claim 1 in which the said skin piece has the foam sheet layer of a closed cell structure.

  According to the present invention, when the foamed resin raw material is cured, the first tongue piece disposed on the lower side is prevented from climbing on the second tongue piece disposed on the upper side, and the slit opening or foaming is suppressed. It becomes possible to suppress molding defects such as leakage of resin raw materials.

  In particular, when the skin piece has a foamed sheet layer having a closed cell structure as in the invention of claim 2, the rigidity of the skin piece is increased by the foamed sheet layer, and a pair of tongues are formed at the center of the slit opening. Even if the base end portion of the piece is easily separated, the first tongue piece arranged on the lower side can be prevented from riding on the second tongue piece arranged on the upper side.

The perspective view of the headrest which concerns on 1st Embodiment. Cross section of headrest Perspective view of bag (A) View from the outside of the slit opening of the bag body, (B) View from the inside Plan view of multiple skin pieces that make up the skin material Cross-sectional view of a foam molding die when urethane foam material is injected into the bag Cross-sectional view of foam mold before foam curing Cross section of foam mold after foam curing The figure which shows notionally the foaming process in case a 1st tongue piece is the same length as a 2nd tongue piece The figure which shows notionally the foaming process in case a 1st tongue piece is longer than a 2nd tongue piece The (A) perspective view of the headrest which concerns on 2nd Embodiment, (B) Side sectional drawing Plan view of multiple skin pieces that make up the skin material Cross-sectional view of a foam molding die when urethane foam material is injected into the bag Cross-sectional view of foam mold before foam curing Cross section of foam mold after foam curing

[First Embodiment]
Hereinafter, a first embodiment in which the present invention is applied to a method for manufacturing a headrest will be described with reference to FIGS. As shown in FIGS. 1 and 2, the headrest 10 of the present embodiment (corresponding to the “skin-integrated foamed product” of the present invention) includes a headrest body 10 </ b> H and a stay 12. The stay 12 has a structure in which a portion near the upper end of the gate-shaped pipe is bent forward, the top of the stay 12 including the bent portion is disposed in the headrest body 10H, and the leg portion 12A of the stay 12 is provided. 12A protrudes from the bottom of the headrest body 10H. The leg portions 12A and 12A of the stay 12 are fixed to the upper part of the rear seat 90R of the vehicle.

  As shown in FIG. 2, the headrest body 10 </ b> H is formed by covering the outer side of the pad 15 made of foamed urethane with a bag body 20. The top portion of the stay 12 described above is embedded in the pad 15. In the present embodiment, the pad 15 is formed in a substantially L shape in side view with the front end bent downward, and the bag body 20 is also formed in a substantially L shape in side view corresponding to the pad 15.

  The bag body 20 is formed by sewing a plurality of skin pieces 21 into a bag shape. FIG. 5 shows a plurality of skin pieces 21 constituting the bag body 20. The plurality of skin pieces 21 include an upper skin piece 21A that constitutes the front surface, the upper surface, and the rear surface of the headrest body 10H, a lower front skin piece 21B that constitutes a front portion of the lower surface of the headrest body 10H, and a lower surface of the headrest body 10H. It consists of a lower rear skin piece 21C constituting the rear part and a pair of side skin pieces 21S and 21S constituting both side surfaces of the headrest body 10H. And the bag part 20 is formed by the boundary part of these several skin pieces 21 being piled up and sewn together. Each skin piece 21 has a structure in which the outer material and the lining material are bonded together, and the surface facing the inside of the bag body 20 is the lining material. The dress material is formed of, for example, a fabric sheet, a synthetic leather sheet, a genuine leather sheet, or the like. The lining is formed of a foam sheet having a closed cell structure. In the example of the present embodiment, a polyethylene foam sheet is used as the lining.

  Specifically, the stitching between the skin pieces 21 and 21 is as follows. That is, overlapping portions 25 and 25 are provided at the boundary portion between the adjacent skin pieces 21 and 21, where the outer skins of the skin pieces 21 and 21 are overlapped with each other. And the skin pieces 21 and 21 are stitched together by these superposition parts 25 and 25 being sewn.

  As shown in FIGS. 2 to 4, a slit opening 20 </ b> K that extends along the left-right direction and serves as an entrance / exit of the bag body 20 is formed in the portion of the bag body 20 that forms the lower surface of the headrest 10 </ b> H. The slit opening 20 </ b> K is sealed with urethane foam constituting the pad 15. 3 shows the bag body 20 in a state where the slit opening 20K is widened.

  Specifically, the slit opening 20K is formed as follows. That is, the boundary between the lower front skin piece 21B and the lower rear skin piece 21C described above is disposed on the lower surface of the headrest body 10H (see FIGS. 2 and 3), and the lower front skin piece 21B and the lower rear skin piece are disposed. The overlapping portions 25, 25 of the piece 21C are stitched only at both ends in the left-right direction (see FIG. 4B). Then, between the non-sewn portions of the overlapping portions 25, 25 of the lower front skin piece 21B and the lower rear skin piece 21C (that is, the intermediate portion in the left-right direction of the overlapping portions 25, 25) along the left-right direction. A slit opening 20K extending in a straight line is formed.

  As shown in FIGS. 4 (A) and 4 (B), the bag body 20 is provided with a pair of tongue pieces 27, 27 that protrude from the opening edge of the slit opening 20 </ b> K to the inside of the bag body 20. . The pair of tongue pieces 27 and 27 are formed by non-sewn portions of overlapping portions 25 and 25 of the lower front skin piece 21B and the lower rear skin piece 21C, and are arranged so as to sandwich the slit opening 20K in the front and rear directions. ing. And the protrusion length of the 1st tongue piece 27A arrange | positioned at the front side among a pair of tongue pieces 27 and 27 is longer than the protrusion length of the 2nd tongue piece 27B arrange | positioned at a back side.

  The description regarding the structure of the headrest 10 has been described above. Next, a method for manufacturing the headrest 10 will be described.

  In order to manufacture the headrest 10, first, a plurality of skin pieces 21 shown in FIG. 5 are prepared. Each skin piece 21 has a structure having the above-described overlapping portion 25 on the outer side of the outer surface constituting portion 24 that is the outer surface of the headrest 10. Here, among the overlapping portions 25 of the lower front skin piece 21B and the lower rear skin piece 21C, the front overlapping portion 25B and the rear overlapping portion 25C arranged at the boundary portion between the skin pieces 21B and 21C, Is a convex shape protruding so that an intermediate portion in the left-right direction (the left-right direction in the headrest 10) is separated from the outer surface constituting portion 24 in each skin piece 21B, 21C. And the protrusion length of the center protrusion 25T of the front overlapping part 25B is longer than the protrusion length of the center protrusion 25T in the rear overlapping part 25C.

  Next, a plurality of skin pieces 21 are sewn into a bag shape to form a bag body 20 with the lining of each skin piece 21 facing outward. Specifically, the overlapping portions 25 of the skin pieces 21 are overlapped so that the outer surfaces face each other, and are sewn together. At this time, the center protrusion 25T of the front overlap portion 25B is overlapped between the front overlap portion 25B and the rear overlap portion 25C so as to protrude from the center protrusion 25T of the rear overlap portion 25C to the front end side. The left and right ends of the front overlapping portion 25B and the rear overlapping portion 25C are sewn (see FIG. 4B). A linear slit opening 20K is formed between the non-sewn portions of the front overlapping portion 25B and the rear overlapping portion 25C (that is, the intermediate portion in the left-right direction of the overlapping portions 25 and 25).

  Next, the bag body 20 is turned upside down with the slit opening 20K as the return opening. Then, the outer material of each skin piece 21 is arrange | positioned outside, and the bag body 20 shown in FIG. 3 is obtained. At this time, between the lower front skin piece 21B and the lower rear skin piece 21C, by the non-sewn portions (specifically, central protrusions 25T and 25T) of the front overlap portion 25B and the rear overlap portion 25C, A pair of tongue pieces 27, 27 projecting from the opening edge of the slit opening 20K to the inside of the bag body 20 are formed. Here, as described above, the protrusion length of the central protrusion 25T of the front overlapping portion 25B is longer than the protrusion length of the central protrusion 25T of the rear overlapping portion 25C. 27A, the first tongue piece 27A arranged on the front side is longer than the second tongue piece 27B arranged on the rear side.

  When the bag body 20 shown in FIG. 3 is obtained, the bag body 20 and the stay 12 are then set in the foaming mold 30 (see FIG. 6). In FIG. 3, the stay 12 is omitted. .) At this time, the bag body 20 is disposed so that the slit opening 20K faces right above.

  Specifically, the foam molding die 30 is a known die used for skin integral foam molding, and has, for example, a second lower die 32 that is rotatable with respect to the first lower die 31. The first upper die 33 and the second upper die 34 are rotatably provided on the upper portion of the first lower die 31 and the upper portion of the second lower die 32. The second lower mold 32 and the second upper mold 34 are provided with a molding surface for molding the front portion of the headrest body 10H, and the first lower mold 31 and the first upper mold 33 are provided behind the headrest body 10H. A molding surface is provided for molding the side portion. In the state where the bag body 20 is set in the foam molding die 30, the boundary between the upper skin piece 21A and the lower rear skin piece 21C is on the boundary line between the first lower mold 31 and the first upper mold 33. Has been placed. Further, the first upper mold 33 is opened so that the urethane foam raw material 35 can be injected into the bag body 20 (see FIG. 6). As will be described later, the foam molding die 30 is tilted after the injection of the urethane foam raw material 35. At this time, the first upper mold 33 is disposed on the upper side.

  Next, as shown in FIG. 6, the nozzle 36 is inserted into the slit opening 20 </ b> K, and the foamed urethane raw material 35 (corresponding to the “foamed resin raw material” of the present invention) is injected from the nozzle 36 into the bag body 20.

  When the injection of the urethane foam raw material 35 is completed, as shown in FIG. 7, the nozzle 36 is retracted from the slit opening 20K, the foam molding die 30 is tilted so as to lower the front end portion of the bag body 20, and the first Close the upper mold 33. Thereby, the urethane foam is easily filled in the front end portion of the bag body 20 having a substantially L shape in side view. In this state, the slit opening 20K is disposed so as to face obliquely upward and forward, and the second tongue piece 27B of the pair of tongue pieces 27 and 27 is overlaid on the first tongue piece 27A.

  Next, the foamed urethane raw material 35 is foam-cured (see FIG. 8). Then, the pad 15 made of urethane foam is formed in the bag body 20. When the molded product is removed from the foaming mold 30, the headrest 10 in which the bag body 20 and the pad 15 are integrated is obtained.

  This completes the description of the structure and manufacturing method of the headrest 10 according to the present embodiment. Next, the effect of the method for manufacturing the headrest 10 according to the present embodiment will be described.

  In the method of manufacturing the headrest 10 according to the present embodiment, when the foamed urethane raw material 35 is foam-cured out of the pair of tongue pieces 27, 27 protruding inward of the bag body 20 from the opening edge of the slit opening 20 </ b> K, the lower side The first tongue piece 27 </ b> A disposed on the side is longer than the second tongue piece 27 </ b> B disposed on the upper side. Therefore, when the foamed urethane raw material 35 is cured, the lower end portion of the first tongue piece 27A is prevented from climbing onto the second tongue piece 27B, and the slit opening 20K is slid or from the slit opening 20K. It is possible to suppress molding defects such as leakage.

  Hereinafter, it will be inferred that the first tongue piece 27 </ b> A is restrained from climbing up in the present embodiment. Before that, first, the first tongue piece 27 </ b> A is a second one based on FIGS. 9A to 9C. Consider the event that occurs when it is the same length as the tongue 27B. As shown in FIG. 9A, at the initial stage of foaming of the foamed urethane raw material 35, the first tongue piece 27A is disposed below the second tongue piece 27B. Further, due to the rigidity of the skin piece 21, the base end portions of the first tongue piece 27A and the second tongue piece 27B are arranged apart from each other so as to widen the slit opening 20K in the middle part of the slit opening 20K. (This phenomenon is particularly prominent due to the rigidity of the skin pieces when the lower front skin piece 21B and the lower rear skin piece 21C have a foam sheet layer having a closed cell structure. ). And if foaming advances from the state shown in FIG. 9 (A), the foamed urethane raw material 35 collides with the lower end of the first tongue piece 27A. Here, since the second tongue piece 27B is disposed above the lower end portion of the first tongue piece 27A, the first tongue piece 27A is formed by the urethane foam raw material 35 as shown in FIG. 9B. When the lower end portion of the first tongue piece 27A is pushed up, the lower end portion of the first tongue piece 27A moves obliquely upward and forward along the second tongue piece 27B. Then, when the foaming further proceeds from the state shown in FIG. 9B, the overlapping portion of the first tongue piece 27A and the second tongue piece 27B moves to the rear side of the headrest 10 in the intermediate portion of the slit opening 20K. To do. As a result, it is considered that the slit opening 20K is formed in a meandering shape at the intermediate portion (the intermediate portion in the left-right direction of the headrest 10) (see FIG. 9C). FIG. 9C shows the first tongue piece 27A and the second tongue piece when the lower end portion of the first tongue piece 27A does not move upward, that is, when the meandering of the slit opening 20K does not occur. 27B is indicated by a two-dot chain line.

  Next, based on FIG. 10 (A) to FIG. 10 (B), in the case of the present embodiment, that is, an event that occurs when the first tongue piece 27A is longer than the second tongue piece 27B is inferred. As shown in FIG. 10A, also in the present embodiment, the first tongue piece 27A is disposed below the second tongue piece 27B in the initial stage of foaming of the foamed urethane raw material 35. Further, due to the rigidity of the skin piece 21, the base end portions of the first tongue piece 27A and the second tongue piece 27B are arranged apart from each other so as to widen the slit opening 20K in the middle part of the slit opening 20K. . When foaming proceeds from the state shown in FIG. 10A, the urethane foam raw material 35 collides with the lower end of the first tongue piece 27A. Here, if the first tongue piece 27A is longer than the second tongue piece 27A, the second tongue piece 27B does not exist above the lower end portion of the first tongue piece 27A. When the lower end is lifted, as shown in the change from FIG. 10 (A) to FIG. 10 (B), the first tongue piece 27A is bent so that the lower end is directed upward, and the lower end of the first tongue piece 27A. The part does not move upward as shown in FIG. Accordingly, it is assumed that the first tongue piece 27A is suppressed from being pushed up with respect to the second tongue piece 27B, and the first tongue piece 27A is prevented from climbing up. Moreover, as shown in FIG. 10 (B), the first tongue piece 27B makes it easy to prevent the foamed urethane raw material 35 from moving upward in the vicinity of the slit opening 20K, and is indicated by an arrow in the figure. As described above, the foamed urethane raw material 35 can easily go around to the back side of the second tongue piece 27B. As a result, it is presumed that the slit opening 20K between the first tongue piece 27A and the second tongue piece 27B can be easily closed.

[Second Embodiment]
Hereinafter, a second embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 11A, the headrest 10V of the present embodiment is fixed to the upper part of the front seat 90F of the vehicle. Similarly to the first embodiment, the headrest 10V includes a headrest body 10H and a stay 12, and the headrest body 10H has a structure in which the outside of the pad 15V is covered with a bag body 20V (FIG. 11B). )reference). In this embodiment, the pad 15V is flat in the front-rear direction and has a substantially triangular shape when viewed from the side, and the bag body 20V has a shape corresponding to the pad 15V.

  The bag body 20V is formed by sewing a plurality of skin pieces 121 into a bag shape, as in the first embodiment. The plurality of skin pieces 121 include a front skin piece 121A that forms the front surface of the headrest body 10H, a rear skin piece 121B that forms the rear surface of the headrest body 10H, and a lower front skin that forms the front part of the lower surface of the headrest body 10H. From the piece 121C, a lower rear skin piece 121D that forms the rear part of the lower surface of the headrest body 10H, and a pair of side skin pieces 121S and 121S (see FIG. 12) that form the side surface of the headrest body 10H. Become. In addition, the boundary part of adjacent skin pieces 121 and 121 has the same structure as the said 1st Embodiment. That is, overlapping portions 25 and 25 are provided at the boundary portion between the adjacent skin pieces 121 and 121, and the surface portions of the skin pieces 121 and 121 are overlapped, and the overlapping portions 25 and 25 are sewn. Thus, the skin pieces 121 and 121 are sewn together.

  Here, the overlapping portions 25, 25 of the lower front skin piece 121C and the lower rear skin piece 121D are stitched only at both ends in the left-right direction. Along the left-right direction between the non-sewn portions of the overlapping portions 25, 25 of the lower front skin piece 121C and the lower rear skin piece 121D (that is, the intermediate portion in the left-right direction of the overlapping portions 25, 25). A slit opening 20K extending in a straight line is formed. Also in this embodiment, the slit opening 20K is sealed with urethane foam constituting the pad 15.

  From the opening edge of the slit opening 20K, a pair of tongue pieces 127 and 127 protrude toward the inside of the bag body 20V. In the present embodiment, the protruding length of the first tongue piece 127A disposed on the rear side of the pair of tongue pieces 127, 127 is longer than the protruding length of the second tongue piece 127B disposed on the front side. It has become. The pair of tongue pieces 127 and 127 are formed by non-sewn portions of the overlapping portions 25 and 25 of the lower front skin piece 121C and the lower rear skin piece 121D so as to sandwich the slit opening 20K in the front-rear direction. Has been placed.

  About the other structure of the headrest 10V, since it is the same as that of the headrest 10 of the said 1st Embodiment, description is abbreviate | omitted by attaching | subjecting the same code | symbol.

  Next, a method for manufacturing the headrest 10V will be described. In order to manufacture the headrest 10V, first, a plurality of skin pieces 121 shown in FIG. 12 are prepared. Of the overlapping portions 25, 25 of the lower front skin piece 121C and the lower rear skin piece 121D, the front overlapping portion 25C and the rear overlapping portion 25D arranged at the boundary between the skin pieces 121C, 121D. Is a convex shape projecting so that an intermediate portion in the left-right direction (the left-right direction in the headrest 10) is separated from the outer surface constituent portion 24 in each skin piece 121C, 121D. The protruding length of the central protrusion 25T of the rear overlapping portion 25D is longer than the protruding length of the central protrusion 25T in the front overlapping portion 25C.

  Next, in the same manner as in the first embodiment, a plurality of skin pieces 121 are sewn into a bag shape to form a bag body 20V with the lining of the skin piece 121 facing outward, and the bag body 20V is formed with a slit opening 20K. Is turned upside down to form a bag 20V with the outer surface of the skin piece 121 facing outward. At this time, the front overlapping portion 25C of the lower front skin piece 121C and the rear overlapping portion 25D of the lower rear skin piece 121D are sewn at both ends in the left-right direction, and the front overlapping portion 25C and the rear overlapping portion are overlapped. A linear slit opening 20K is formed between the non-sewn portions of the mating portion 25D. Further, a slit is formed between the lower front skin piece 121C and the lower rear skin piece 121D by a non-sewn portion (specifically, central protrusions 25T and 25T) of the front overlapping portion 25C and the rear overlapping portion 25D. A pair of tongue pieces 127 and 127 projecting from the opening edge of the opening 20K to the inside of the bag body 20V are formed.

  Next, the bag body 20V and the stay 12 are set in the foaming mold 30V (see FIG. 13). Note that the stay 12 is omitted in the figure. At this time, the bag body 20V is disposed so that the slit opening 20K faces obliquely upward (specifically, obliquely upward and rearward). In addition, the second tongue piece 127B of the pair of tongue pieces 127 and 127 is superimposed on the first tongue piece 127A. As the foam molding die 30V, a known die is used in the same manner as the foam molding die 30 of the first embodiment. That is, the foaming mold 30V has a second lower mold 32V that is rotatable with respect to the first lower mold 31V, and the first upper mold 31V and the second lower mold 32V are arranged on the first upper mold 31V. The mold 33V and the second upper mold 34V are rotatably provided. The second lower mold 32V and the second upper mold 34V are provided with a molding surface for molding the front portion of the headrest body 10H, and the first lower mold 31V and the first upper mold 33V are provided behind the headrest body 10H. A molding surface is provided for molding the side portion.

  Next, as shown in FIG. 13, with the second upper die 34 </ b> V that presses from above the portion of the bag body 20 </ b> V disposed above the slit opening 20 </ b> K, the nozzle 36 is inserted through the slit opening 20 </ b> K, The foamed urethane raw material 35 is injected from the nozzle 36 into the bag body 20V. Then, the nozzle 36 is removed from the slit opening 20K, the second upper mold 34V is closed, and the foamed urethane raw material 35 is foamed and cured (see FIG. 14). Then, a pad 15V made of foamed urethane is formed in the bag body 20V (see FIG. 15). When the molded product is removed from the foaming mold 30, the headrest 10V in which the bag body 20V and the pad 15V are integrated is obtained.

  This completes the description of the structure and manufacturing method of the headrest 10V according to the present embodiment. According to the present embodiment, it is possible to achieve the same effect as the first embodiment.

[Other Embodiments]
The present invention is not limited to the above-described embodiment. For example, the embodiments described below are also included in the technical scope of the present invention, and various modifications are possible within the scope of the invention other than the following. It can be changed and implemented.

  (1) In the above embodiment, the “skin-integrated foam” of the present invention is the headrest 10, but may be an armrest, a seat cushion, a seat back, or the like.

  (2) The configuration of the second embodiment may be applied to the first embodiment. That is, when the bag body 20 is set in the foam molding die 30, the urethane foam raw material 35 may be injected and foam-cured in such a state that the slit opening 20K faces obliquely upward and forward.

  (3) The configuration of the first embodiment may be applied to the second embodiment. That is, the bag body 20V is set in the foam molding die 30V so that the slit opening 20K faces upward, the foamed urethane raw material 35 is injected into the bag body 20V, and then the foam molding die 30V is tilted to form the slit. The bag body 20V may be arranged so that the opening 20K faces obliquely upward and rearward.

10,10V headrest (foam with integrated skin)
15, 15V pad 20, 20V bag body 20K slit opening 21, 121 skin piece 27, 127 tongue piece 27A, 127A first tongue piece 27B, 127B second tongue piece 35 foamed urethane material (foamed resin material)

Claims (2)

A plurality of skin pieces are sewn into a bag shape to form a bag body, and a slit opening serving as an entrance / exit of the bag body is formed between a pair of adjacent skin pieces, and a foamed resin material is formed from the slit opening. And the foamed resin raw material is foamed and cured in the bag body, and is a method for producing a skin-integrated foam product,
Each of the pair of skin pieces is provided with a tongue piece protruding from the edge of the slit opening to the inside of the bag body,
When foaming and curing the foamed resin raw material, the bag body is arranged so that the slit opening is opened obliquely upward, and a pair of tongue pieces are vertically stacked. In
Of the pair of tongue pieces, the first tongue piece disposed on the lower side when foaming and curing the foamed resin material is made longer than the second tongue piece disposed on the upper side. Production method.   The said skin piece is a manufacturing method of the skin integrated foam product of Claim 1 which has a foam sheet layer of a closed cell structure.

Images