JP5891215B2 - Manufacturing method of products with skin - Google Patents

Manufacturing method of products with skin Download PDF

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Publication number
JP5891215B2
JP5891215B2 JP2013241738A JP2013241738A JP5891215B2 JP 5891215 B2 JP5891215 B2 JP 5891215B2 JP 2013241738 A JP2013241738 A JP 2013241738A JP 2013241738 A JP2013241738 A JP 2013241738A JP 5891215 B2 JP5891215 B2 JP 5891215B2
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Japan
Prior art keywords
skin
cushion layer
base material
stitch line
laminated
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JP2013241738A
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Japanese (ja)
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JP2015100955A (en
Inventor
武司 永田
武司 永田
千春 戸谷
千春 戸谷
稔 戸田
稔 戸田
正人 薮押
正人 薮押
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Toyota Motor Corp
Toyoda Gosei Co Ltd
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Toyota Motor Corp
Toyoda Gosei Co Ltd
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Priority to JP2013241738A priority Critical patent/JP5891215B2/en
Priority to PCT/JP2014/080792 priority patent/WO2015076341A1/en
Publication of JP2015100955A publication Critical patent/JP2015100955A/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/16Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04Interconnection of layers
    • B32B7/08Interconnection of layers by mechanical means
    • B32B7/09Interconnection of layers by mechanical means by stitching, needling or sewing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/02Internal Trim mouldings ; Internal Ledges; Wall liners for passenger compartments; Roof liners
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00Ancillary operations in connection with laminating processes
    • B32B2038/0052Other operations not otherwise provided for
    • B32B2038/008Sewing, stitching
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2605/00Vehicles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2605/00Vehicles
    • B32B2605/003Interior finishings
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00Ancillary operations in connection with laminating processes
    • B32B38/18Handling of layers or the laminate
    • B32B38/1825Handling of layers or the laminate characterised by the control or constructional features of devices for tensioning, stretching or registration
    • B32B38/1833Positioning, e.g. registration or centering
    • B32B38/1841Positioning, e.g. registration or centering during laying up

Description

本発明は、表皮の表面の一部にステッチラインが形成された表皮付き製品を製造する方法に関する。   The present invention relates to a method of manufacturing a product with a skin in which a stitch line is formed on a part of the surface of the skin.

例えば、自動車のインストルメントパネル、コンソール等の内装品として、基材と、基材上に設けられ、かつ表皮の裏側にクッション層を積層してなる積層材と、表皮の表面に沿って線状をなすように配列された複数の縫い目からなるステッチラインとを備えるもの(以下、表皮付き製品という)が知られている。この表皮付き製品では、表皮の一部に窪み部を有し、その窪み部の底部にステッチラインが位置していてステッチラインが沈み込んだように見えることが、質感を高めるうえで有効である。   For example, as interior products such as automobile instrument panels and consoles, a base material, a laminated material provided on the base material and having a cushion layer laminated on the back side of the skin, and linear along the surface of the skin And a stitch line composed of a plurality of seams arranged so as to form (hereinafter referred to as a product with a skin) are known. In this skin-attached product, it is effective in enhancing the texture that the part of the skin has a dent and the stitch line is located at the bottom of the dent and the stitch line appears to sink. .

そこで、例えば特許文献1に記載された「車両内装部材の製造方法」では、図7に示すように、積層材51としてステッチライン形成部55が設けられたものが用いられる。ステッチライン形成部55では、表皮52及びクッション層53の各表面が基材56側へ窪み、各裏面が基材56側へ突出している。ステッチライン形成部55においてクッション層53と表皮52とが共縫いされることで、表皮52の表面にステッチライン54が形成される。   Therefore, for example, in the “vehicle interior member manufacturing method” described in Patent Document 1, as shown in FIG. 7, a laminate 51 provided with a stitch line forming portion 55 is used. In the stitch line formation part 55, each surface of the outer skin 52 and the cushion layer 53 is dented to the base material 56 side, and each back surface protrudes to the base material 56 side. By stitching the cushion layer 53 and the skin 52 together in the stitch line forming portion 55, the stitch line 54 is formed on the surface of the skin 52.

一方、基材56として、ステッチライン対応部57が設けられたものが用いられる。ステッチライン対応部57では、基材56の表面が裏側に向けて窪んでいる。
そして、上記ステッチライン形成部55がステッチライン対応部57に貼り合わされることで、積層材51が基材56に固定される。
On the other hand, the substrate 56 is provided with a stitch line corresponding portion 57. In the stitch line corresponding part 57, the surface of the base material 56 is recessed toward the back side.
The laminated material 51 is fixed to the base material 56 by the stitch line forming portion 55 being bonded to the stitch line corresponding portion 57.

特開2013−43571号公報JP 2013-43571 A

ところが、上記特許文献1に記載された製造方法では、積層材51を基材56に固定する際に、ステッチライン対応部57に対するステッチライン形成部55の位置合わせ作業を厳密に行なわなければならず、位置合わせに手間がかかる問題がある。   However, in the manufacturing method described in Patent Document 1, when the laminated material 51 is fixed to the base material 56, the alignment operation of the stitch line forming portion 55 with respect to the stitch line corresponding portion 57 must be strictly performed. There is a problem that it takes time to align.

本発明は、このような実情に鑑みてなされたものであって、その目的は、表皮の一部に窪み部を有し、その窪み部の底部にステッチラインを有する表皮付き製品を、厳密な位置合わせ作業をせずに製造することのできる表皮付き製品の製造方法を提供することにある。   The present invention has been made in view of such circumstances, and the object thereof is to provide a product with a skin that has a hollow portion in a part of the skin and a stitch line at the bottom of the hollow portion. An object of the present invention is to provide a method for manufacturing a product with a skin that can be manufactured without performing an alignment operation.

上記課題を解決する表皮付き製品の製造方法は、基材と、前記基材上に設けられ、かつ表皮の裏側に、同表皮よりも柔らかいクッション層を積層してなる積層材と、前記表皮の表面に沿って線状をなすように配列された複数の縫い目からなるステッチラインとを備える表皮付き製品を製造する方法であって、前記積層材における前記クッション層の一部が前記表皮側へ窪むように前記クッション層及び前記表皮を共縫いすることにより、前記表皮の表面に前記ステッチラインを形成するステッチライン形成工程と、前記積層材の裏側の面であって、前記共縫いされた箇所の裏側の面を含む面の略全面を前記基材に対し密着させた状態で貼付ける貼付け工程とが少なくとも行なわれ、前記ステッチライン形成工程及び前記貼付け工程では、前記積層材として、前記表皮に立体編クッション層が積層されたものが用いられ、前記ステッチライン形成工程では、前記立体編クッション層の剛性を利用することにより、前記クッション層の圧縮が抑制されるA method of manufacturing a product with a skin that solves the above problems includes a base material, a laminated material that is provided on the base material, and is formed by laminating a cushion layer softer than the skin on the back side of the skin, A method for manufacturing a product with a skin comprising a stitch line comprising a plurality of seams arranged in a line along a surface, wherein a part of the cushion layer in the laminated material is recessed toward the skin side. The stitch line forming step for forming the stitch line on the surface of the skin by co-sewing the cushion layer and the skin, and the back side of the laminated material, the back side of the jointed portion a joining step of pasted substantially the whole surface in a state of close contact with respect to the substrate surface including the surface is at least carried out, and in the stitch line forming step and the attaching step, the As the layer material, it is used as the stereoscopic knitting cushioning layer is laminated to the skin, in the stitch line forming step, by utilizing the rigidity of the three-dimensional knitted cushion layer, compression of the cushion layer is suppressed.

ステッチライン形成工程では、積層材におけるクッション層及び表皮が共縫いされる。クッション層が表皮よりも柔らかいことから、上記共縫いの際に、積層材におけるクッション層の一部が糸によって表皮側へ引張られる。そのため、クッション層の裏側では、同クッション層のうち糸の周辺部分が表皮側へ窪む。また、表皮の表面に、同表面に沿って線状をなすように配列された複数の縫い目からなるステッチラインが形成される。   In the stitch line forming step, the cushion layer and the skin in the laminated material are stitched together. Since the cushion layer is softer than the skin, a part of the cushion layer in the laminated material is pulled to the skin side by the thread during the above-mentioned joint sewing. Therefore, on the back side of the cushion layer, the peripheral portion of the thread in the cushion layer is recessed toward the skin. In addition, a stitch line including a plurality of seams arranged in a linear shape along the surface is formed on the surface of the epidermis.

貼付け工程では、積層材の裏側の面であって、共縫いされた箇所の裏側の面を含む面の略全面が基材に対し密着させられた状態で貼付けられる。この際、クッション層のうち、貼付け工程の前に、共縫いにより表皮側へ引張られて窪んでいた箇所も基材側へ引き戻されて、共縫いされず窪んでいない箇所と同様に基材の表面に沿った形状にされて、同基材に貼付けられる。この貼付けに際しては、積層材を基材に対し厳密に位置合わせする必要はない。   In the affixing step, the affixing is performed in a state where the entire surface of the laminated material including the back side surface of the jointed portion is in close contact with the substrate. At this time, in the cushion layer, before the attaching process, the portion that was pulled to the skin side by the co-sewing and recessed was also pulled back to the substrate side, and the same as the portion that was not recessed without being co-sewn. It is made into the shape along the surface and is affixed on the same base material. At the time of this sticking, it is not necessary to strictly align the laminated material with the base material.

上記の貼付けにより、積層材の一部に、貼付け工程の前の形状を反転したような形状、すなわち、基材側へ窪み、かつ底部にステッチラインを有する窪み部が形成される。
前記ステッチライン形成工程及び前記貼付け工程で用いられる積層材としては、表皮に立体編クッション層が積層されたものが適している。立体編クッション層は、他の種類のクッション層に比べ圧縮特性に優れる(剛性が高い)。そのため、ステッチライン形成工程で立体編クッション層及び表皮が共縫いされた場合、立体編クッション層のうちステッチラインの近くの箇所のみが表皮側へ引張られる。
By the above-mentioned pasting, a shape that is the inverted shape of the previous step of the pasting process, that is, a concave portion that is depressed toward the base material and that has a stitch line at the bottom is formed in a part of the laminated material.
As a laminated material used in the stitch line forming step and the pasting step, a laminate in which a three-dimensional knitted cushion layer is laminated on the skin is suitable. The three-dimensional knitted cushion layer has excellent compression characteristics (high rigidity) compared to other types of cushion layers. Therefore, when the three-dimensional knitted cushion layer and the skin are co-sewn in the stitch line forming step, only the portion near the stitch line in the three-dimensional knitted cushion layer is pulled toward the skin.

また、貼付け工程で、積層材が基材に密着状態で貼付けられた場合、ステッチラインの近くの箇所のみに明確な窪み部が形成される。
上記表皮付き製品の製造方法において、前記貼付け工程では、前記基材及び前記積層材の少なくとも一方に対し、互いに接近させる方向へ押付ける力が加えられ、前記積層材が前記基材に貼付けられた後に前記力が解除されることが好ましい。
Moreover, when a laminated material is affixed on a base material in a sticking state in the affixing step, a clear recess is formed only at a location near the stitch line.
In the manufacturing method of the above-mentioned product with skin, in the pasting step, a pressing force is applied to at least one of the base material and the laminated material in a direction to approach each other, and the laminated material is stuck to the base material. It is preferable that the force is released later.

上記の製造方法によれば、貼付け工程では、基材及び積層材の少なくとも一方に対し、互いに接近させる方向へ押付ける力が加えられる。この力により、クッション層が、その弾性に抗して基材側へ圧縮されて、積層材の裏側の面であって、共縫いされた箇所の裏側の面を含む面の略全面が基材に密着した状態で好適に貼付けられる。この際、クッション層のうち、貼付け工程の前に、共縫いにより表皮側へ引張られて窪んでいた箇所も基材側へ引き戻されて、共縫いされず窪んでいない箇所と同様に基材の表面に沿った形状にされて、同基材に貼付けられる。   According to said manufacturing method, in the sticking process, the force pressed in the direction made to mutually approach is applied with respect to at least one of a base material and a laminated material. By this force, the cushion layer is compressed toward the base material against its elasticity, and the back surface of the laminated material, and the substantially entire surface including the back surface of the co-sewn part is the base material. It adheres suitably in the state closely_contact | adhered to. At this time, in the cushion layer, before the attaching process, the portion that was pulled to the skin side by the co-sewing and recessed was also pulled back to the substrate side, and the same as the portion that was not recessed without being co-sewn. It is made into the shape along the surface and is affixed on the same base material.

積層材が基材に貼付けられた後に上記力が解除される。すると、クッション層を圧縮させようとする力がなくなり、同クッション層が自身の弾性復元力により元の状態に戻ろうとする。但し、クッション層のうち共縫いされた箇所では、糸により弾性復元が制限される。そのため、積層材の一部に、貼付け工程の前の形状を反転したような形状、すなわち、基材側へ窪み、かつ底部にステッチラインを有する窪み部が形成される。   The above force is released after the laminated material is attached to the substrate. Then, there is no force to compress the cushion layer, and the cushion layer tries to return to the original state by its own elastic restoring force. However, elastic recovery is limited by the thread in the joint layer of the cushion layer. Therefore, in a part of the laminated material, a shape that is the reverse of the shape before the pasting step, that is, a recess that is recessed toward the base material and that has a stitch line at the bottom is formed.

上記表皮付き製品の製造方法によれば、表皮の一部に窪み部を有し、その窪み部の底部にステッチラインを有する表皮付き製品を、厳密な位置合わせ作業をせずに製造することができる。   According to the above method for manufacturing a product with a skin, it is possible to manufacture a product with a skin that has a dent in a part of the skin and has a stitch line at the bottom of the dent without a precise alignment operation. it can.

表皮付き製品の製造方法の一実施形態を示す図であり、(a)〜(e)は同製造方法の内容を示す工程図。It is a figure which shows one Embodiment of the manufacturing method of a product with an outer skin, (a)-(e) is process drawing which shows the content of the manufacturing method. 図1の製造方法により製造される表皮付き製品の部分斜視図。The fragmentary perspective view of the product with a skin manufactured by the manufacturing method of FIG. 表皮付き製品の変形例を示す部分断面図。The fragmentary sectional view which shows the modification of a product with a skin. 表皮付き製品の変形例を示す部分断面図。The fragmentary sectional view which shows the modification of a product with a skin. 表皮付き製品の変形例を示す部分断面図。The fragmentary sectional view which shows the modification of a product with a skin. 変形例の表皮付き製品を製造する途中の状態を示す図であり、一対の積層材が縫合された状態を示す部分断面図。It is a figure which shows the state in the middle of manufacturing the product with a skin of a modification, and the fragmentary sectional view which shows the state by which a pair of laminated material was stitch | sutured. 従来の表皮付き製品を製造する途中の状態を示す部分断面図。The fragmentary sectional view which shows the state in the middle of manufacturing the product with the conventional skin.

以下、表皮付き製品の製造方法の一実施形態について、図1及び図2を参照して説明する。
まず、本実施形態の製造方法が適用されて製造される表皮付き製品について説明する。本実施形態では、自動車のインストルメントパネル、コンソール、ドアトリム、グローブボックス、ピラーガーニッシュ等の各種自動車用内装品を、表皮付き製品の対象としている。なお、説明の便宜上、表皮付き製品を単純な形状で例示する。
Hereinafter, an embodiment of a method for manufacturing a product with a skin will be described with reference to FIGS. 1 and 2.
First, a skinned product manufactured by applying the manufacturing method of the present embodiment will be described. In the present embodiment, various automotive interior products such as automotive instrument panels, consoles, door trims, glove boxes, pillar garnishes, etc. are targeted for products with skins. For convenience of explanation, a product with a skin is illustrated in a simple shape.

図2に示すように、表皮付き製品10は、基材11、積層材12及びステッチライン17を主要な構成部材として備えている。次に、表皮付き製品10の各構成部材について説明する。   As shown in FIG. 2, the product with skin 10 includes a base material 11, a laminated material 12, and a stitch line 17 as main constituent members. Next, each component of the product with skin 10 will be described.

<基材11>
基材11は、表皮付き製品10の骨格部分をなす部材であり、表皮付き製品10の剛性を担保している。基材11は、ポリプロピレン、ポリエチレン等の樹脂材料を用い、射出成形等の樹脂成形を行なうことによって、製品形状に形成されている。基材11は、曲面、屈曲面、凹凸面等といった非平面状の表面(三次元表面)を有するものであってもよい。
<Substrate 11>
The base material 11 is a member that forms a skeleton part of the product 10 with skin, and ensures the rigidity of the product 10 with skin. The base material 11 is formed into a product shape by performing resin molding such as injection molding using a resin material such as polypropylene or polyethylene. The substrate 11 may have a non-planar surface (three-dimensional surface) such as a curved surface, a bent surface, and an uneven surface.

なお、基材11には、特許文献1のステッチライン対応部57(図7参照)に相当する部分は形成されていない。
<積層材12>
積層材12は、表皮付き製品10の外殻(表層)部分をなす部材であり、基材11上に配置されている。積層材12は、基材11の表面に沿わされており、自身の裏面において基材11の表面に密着させられた状態で貼付けられている。
Note that a portion corresponding to the stitch line corresponding portion 57 (see FIG. 7) of Patent Document 1 is not formed on the base material 11.
<Laminated material 12>
The laminated material 12 is a member that forms an outer shell (surface layer) portion of the product 10 with a skin, and is disposed on the base material 11. The laminated material 12 is along the surface of the base material 11, and is stuck in a state of being in close contact with the surface of the base material 11 on its back surface.

積層材12としては、表皮付き製品10の意匠面を構成する表皮13と、その表皮13の裏側(図2の下側)に積層され、かつ表皮13よりも柔らかいクッション層14とからなるものが用いられている。   The laminated material 12 includes a skin 13 constituting the design surface of the skinned product 10 and a cushion layer 14 laminated on the back side (the lower side of FIG. 2) of the skin 13 and softer than the skin 13. It is used.

表皮13は、主として表皮付き製品10の質感向上、触感向上等を図る目的で用いられている。表皮13は、塩化ビニル、熱可塑性エラストマ(TPO)等からなる合成皮革(合皮)によって、厚みの均一なシート状に形成されており、厚み方向等に変形し得る。   The skin 13 is mainly used for the purpose of improving the texture and tactile sensation of the product 10 with the skin. The skin 13 is formed into a sheet having a uniform thickness by synthetic leather (synthetic leather) made of vinyl chloride, thermoplastic elastomer (TPO) or the like, and can be deformed in the thickness direction or the like.

表皮13としては、0.35〜1.5mmの厚みを有するものが用いられることが望ましい。表皮13の厚みが0.35mmよりも薄いと、表皮付き製品10の製造の過程で表皮13においてステッチライン17の近くにシワが入るおそれがある。これに対し、表皮13の厚みが1.5mmよりも厚いと、表皮13が硬くなる。積層材12が基材11に貼付けられる際に、表皮13が基材11に沿って変形しにくく、窪み部15が形成されにくい。なお、表皮13は、皮革製品に見られるようなシボ(皺模様)を、自身の表面に有していてもよい。   As the skin 13, it is desirable to use one having a thickness of 0.35 to 1.5 mm. If the thickness of the skin 13 is thinner than 0.35 mm, wrinkles may occur near the stitch line 17 in the skin 13 in the process of manufacturing the product 10 with the skin. On the other hand, when the thickness of the skin 13 is thicker than 1.5 mm, the skin 13 becomes hard. When the laminated material 12 is affixed to the base material 11, the skin 13 is not easily deformed along the base material 11, and the recessed portion 15 is difficult to be formed. In addition, the skin 13 may have a wrinkle (a wrinkle pattern) as seen in leather products on its surface.

クッション層14は立体編クッション層によって構成されており、弾力性を有している。クッション層14は、表皮付き製品10の触感向上のために用いられており、例えば、ダブルラッセル編機等を用いて形成され、所定間隔をおいて位置する一対のグランド編地間に連結糸を往復させることにより編成される。   The cushion layer 14 is constituted by a three-dimensional knitted cushion layer, and has elasticity. The cushion layer 14 is used to improve the tactile sensation of the product 10 with the skin. For example, the cushion layer 14 is formed using a double raschel knitting machine or the like, and a connecting yarn is provided between a pair of ground knitted fabrics positioned at a predetermined interval. It is knitted by reciprocating.

クッション層14としては、1.5〜3.5mmの厚みを有するものが用いられることが望ましい。厚みが上記範囲から外れていると、表皮付き製品10の見栄えが低下する。より具体的には、クッション層14の厚みが1.5mmよりも薄いと、同クッション層14が基材11に貼付けられたときに基材11側へ引き戻される量が不足する。クッション層14の厚みが3.5mmよりも厚いと、共縫いされたときに同クッション層14が表皮13側へ過剰に窪むおそれがある。この場合、積層材12が基材11に貼付けられたときのクッション層14の基材11側への引き戻し量が多く、積層材12の表面に、意図するよりも大きな窪み部15が形成されるおそれがある。   As the cushion layer 14, a layer having a thickness of 1.5 to 3.5 mm is desirably used. If the thickness is out of the above range, the appearance of the product 10 with the skin is lowered. More specifically, when the thickness of the cushion layer 14 is thinner than 1.5 mm, the amount pulled back to the base material 11 side when the cushion layer 14 is attached to the base material 11 is insufficient. If the thickness of the cushion layer 14 is thicker than 3.5 mm, the cushion layer 14 may be excessively recessed toward the skin 13 when the two are sewn together. In this case, the amount of pullback of the cushion layer 14 toward the base material 11 when the laminated material 12 is affixed to the base material 11 is large, and a larger dent portion 15 than intended is formed on the surface of the laminated material 12. There is a fear.

上記積層材12の表側には、クッション層14の一部が基材11側へ圧縮変形させられることにより、一対の壁面16からなる窪み部15が形成されている。この窪み部15が形成された箇所では、クッション層14の厚みが、他の箇所の厚みよりも小さくなっている。両壁面16は、窪み部15の底部に向けてなだらかに傾斜している。両壁面16の間隔は、窪み部15の底部に近づくに従い狭くなっている。   On the front side of the laminated material 12, a hollow portion 15 including a pair of wall surfaces 16 is formed by compressing and deforming a part of the cushion layer 14 toward the base material 11 side. In the place where this hollow part 15 was formed, the thickness of the cushion layer 14 is smaller than the thickness of other places. Both wall surfaces 16 are gently inclined toward the bottom of the recess 15. The distance between both wall surfaces 16 becomes narrower as it approaches the bottom of the recess 15.

なお、積層材12には、特許文献1のステッチライン形成部55(図7参照)に相当する部分は形成されていない。
<ステッチライン17>
ステッチライン17は、表皮13において、その表皮13のパーツの縫い合わせを擬似的に再現することで、本革を使用しているような外観を表皮付き製品10に持たせて高級感を演出するためのものであり、装飾(加飾)を目的として設けられている。こうした形態のステッチライン17は、飾りステッチとも呼ばれる。
Note that a portion corresponding to the stitch line forming portion 55 (see FIG. 7) of Patent Document 1 is not formed in the laminated material 12.
<Stitch line 17>
The stitch line 17 in the skin 13 is to reproduce the stitching of the parts of the skin 13 in order to give the product 10 with the skin the appearance of using genuine leather and create a high-class feeling. It is provided for the purpose of decoration (decoration). Such a stitch line 17 is also called a decorative stitch.

ステッチライン17は、表皮13及びクッション層14を、上糸18及び下糸19を用いて共縫いすることによって形成されており、表皮13の表面のうち窪み部15の底部に沿って線状をなすように配列された複数の縫い目21からなる。表現を変えると、上糸18が断続的に窪み部15の底部に現出しており、この現出部分が縫い目21を構成している。本実施形態のステッチライン17は、複数の縫い目21が、窪み部15の延びる方向(延出方向)に沿って一直線をなすように配列されることによって構成されている。このような縫い目21の配列形態は、ストレートステッチとも呼ばれる。   The stitch line 17 is formed by co-sewing the skin 13 and the cushion layer 14 using the upper thread 18 and the lower thread 19. The stitch line 17 has a linear shape along the bottom of the recess 15 in the surface of the skin 13. It consists of a plurality of seams 21 arranged in an array. In other words, the upper thread 18 appears intermittently at the bottom of the recess 15, and this appearing portion constitutes the seam 21. The stitch line 17 of the present embodiment is configured by arranging a plurality of seams 21 so as to form a straight line along the extending direction (extending direction) of the recessed portion 15. Such an arrangement form of the seams 21 is also called a straight stitch.

次に、本実施形態の作用として、上記のように構成された表皮付き製品10を製造する方法について、図1を参照して説明する。
この製造方法では、積層材形成工程、ステッチライン形成工程及び貼付け工程が順に行なわれる。次に、各工程について説明する。
Next, as an operation of the present embodiment, a method for manufacturing the product with skin 10 configured as described above will be described with reference to FIG.
In this manufacturing method, a laminated material forming step, a stitch line forming step, and a pasting step are sequentially performed. Next, each step will be described.

<積層材形成工程>
積層材形成工程では、図1(a)に示すように、表皮13とクッション層14とが準備される。クッション層14が表皮13の裏側に配置され、同クッション層14が接着剤によって表皮13に接着される。この接着により、図1(b)に示すように、クッション層14が表皮13に接合され、表皮13の裏側にクッション層14を積層してなる積層材12が形成される。
<Laminate formation process>
In the laminated material forming step, an outer skin 13 and a cushion layer 14 are prepared as shown in FIG. The cushion layer 14 is disposed on the back side of the skin 13, and the cushion layer 14 is bonded to the skin 13 with an adhesive. By this adhesion, as shown in FIG. 1B, the cushion layer 14 is joined to the outer skin 13, and the laminated material 12 formed by laminating the cushion layer 14 on the back side of the outer skin 13 is formed.

<ステッチライン形成工程>
ステッチライン形成工程では、積層材12がミシンにより、図1(c)に示すように上糸18及び下糸19で同積層材12の表裏にわたって縫われることで、表皮13及びクッション層14が共縫いされる。
<Stitch line formation process>
In the stitch line forming process, the laminated material 12 is sewn across the front and back of the laminated material 12 with the upper thread 18 and the lower thread 19 as shown in FIG. Sewed.

ここで、クッション層14が表皮13よりも柔らかいことから、上記共縫いは、クッション層14が表皮13側へ引張られながら行なわれる。この共縫いにより、クッション層14の裏側では、同クッション層14のうち上糸18及び下糸19の周辺部分が表皮13側へ窪む。また、表皮13の表面に、同表面に沿って全体として線状をなすように配列された複数の縫い目21からなるステッチライン17(図2参照)が形成される。   Here, since the cushion layer 14 is softer than the skin 13, the co-sewing is performed while the cushion layer 14 is pulled toward the skin 13. By this co-sewing, on the back side of the cushion layer 14, the peripheral portions of the upper thread 18 and the lower thread 19 in the cushion layer 14 are recessed toward the skin 13. Further, on the surface of the skin 13, stitch lines 17 (see FIG. 2) including a plurality of stitches 21 arranged so as to form a linear shape as a whole along the surface are formed.

立体編クッション層からなるクッション層14は、他の種類のクッション層に比べ圧縮特性に優れる(剛性が高い)。そのため、クッション層14及び表皮13が共縫いされた場合、クッション層14のうちステッチライン17の近くの箇所のみが表皮13側へ引張られて、同方向に圧縮される。クッション層14のうち上記ステッチライン17の近くの箇所の厚みが他の箇所よりも薄くなる。   The cushion layer 14 made of a three-dimensional knitted cushion layer has excellent compression characteristics (high rigidity) compared to other types of cushion layers. Therefore, when the cushion layer 14 and the skin 13 are stitched together, only the portion near the stitch line 17 in the cushion layer 14 is pulled toward the skin 13 and compressed in the same direction. Of the cushion layer 14, the thickness of the portion near the stitch line 17 is thinner than the other portions.

<貼付け工程>
貼付け工程の実施に先立ち、図1(d)に示すように基材11が準備される。基材11としては、射出成形等の樹脂成形方法によって所定の製品形状に成形されたものが対象とされる。
<Paste process>
Prior to performing the pasting step, a substrate 11 is prepared as shown in FIG. As the base material 11, what was shape | molded by the resin molding method, such as injection molding, to the predetermined product shape is made into object.

貼付け工程では、基材11の表面及び積層材12(クッション層14)の裏面の少なくとも一方に接着剤が塗布される。そして、積層材12の裏側の面であって、共縫いされた箇所の裏側の面を含む面の略全面、ここでは、クッション層14の裏面の略全面が基材11の表面に対し密着させられた状態で貼付けられる。   In the attaching step, an adhesive is applied to at least one of the front surface of the base material 11 and the back surface of the laminated material 12 (cushion layer 14). The substantially entire surface of the back surface of the laminated material 12 including the back surface of the jointed portion, here, the substantially entire surface of the back surface of the cushion layer 14 is in close contact with the surface of the base material 11. It is pasted in the state that was done.

本実施形態では、互いに重ね合わされた基材11及び積層材12が、それらの厚み方向についての両側から、プレス機(図示略)によって互いに接近する方向へ押付けられる。この押付けにより、積層材12のクッション層14が、その弾性に抗して基材11側へ圧縮される。この際、クッション層14のうち、貼付け工程の前に、共縫いにより表皮13側へ引張られて窪んでいた箇所も基材11側へ引き戻されて、共縫いされず窪んでいない箇所と同様に基材11の表面に沿った形状にされて、すなわち基材11に密着した状態にされて、同基材11に好適に貼付けられる。この貼付けに際しては、積層材12を基材11に対し厳密に位置合わせする必要はない。   In the present embodiment, the base material 11 and the laminated material 12 that are superposed on each other are pressed in directions approaching each other by a press machine (not shown) from both sides in the thickness direction thereof. By this pressing, the cushion layer 14 of the laminated material 12 is compressed toward the base material 11 against its elasticity. At this time, in the cushion layer 14, the portion that was pulled and depressed to the skin 13 side by the co-sewing before the attaching step is also pulled back to the base material 11 side, similarly to the portion that is not co-sewn and not depressed. It is made into the shape along the surface of the base material 11, that is, in a state of being in close contact with the base material 11, and is suitably attached to the base material 11. At the time of this pasting, it is not necessary to strictly align the laminated material 12 with respect to the base material 11.

積層材12(クッション層14)が基材11に貼付けられた後に、プレス機による上記押付け力が解除される。すると、クッション層14を圧縮させようとする力がなくなり、クッション層14が自身の弾性復元力により元の状態に戻ろうとする。但し、クッション層14のうち共縫いされた箇所では、上糸18及び下糸19により弾性復元が制限される。そのため、図1(e)に示すように、積層材12(表皮13、クッション層14)の一部に、貼付け工程の前の形状を反転したような形状、すなわち、基材11側へ窪み、かつ底部にステッチライン17を有する窪み部15が形成される。   After the laminated material 12 (cushion layer 14) is attached to the base material 11, the pressing force by the press machine is released. Then, there is no force to compress the cushion layer 14, and the cushion layer 14 tries to return to the original state by its own elastic restoring force. However, the elastic restoration is limited by the upper thread 18 and the lower thread 19 at the joint layer of the cushion layer 14. Therefore, as shown in FIG. 1 (e), a part of the laminated material 12 (skin 13 and cushion layer 14) has a shape that is the reverse of the shape before the pasting step, that is, a depression toward the substrate 11 side, And the hollow part 15 which has the stitch line 17 in the bottom part is formed.

ここで、上述したように立体編クッション層からなるクッション層14は、他の種類のクッション層に比べ圧縮特性に優れる(剛性が高い)ため、積層材12が基材11に密着状態で貼付けられた場合、ステッチライン17の近くの箇所のみに明確な窪み部15が形成される。   Here, as described above, the cushion layer 14 formed of the three-dimensional knitted cushion layer has excellent compression characteristics (high rigidity) compared to other types of cushion layers, and thus the laminated material 12 is stuck to the base material 11 in a close contact state. In this case, a clear recess 15 is formed only at a location near the stitch line 17.

以上詳述した本実施形態によれば、次の効果が得られる。
(1)ステッチライン形成工程では、積層材12におけるクッション層14の一部が表皮13側へ窪むようにクッション層14及び表皮13を共縫いすることにより、表皮13の表面にステッチライン17を形成する(図1(c))。貼付け工程では、積層材12の裏側の面であって、共縫いされた箇所の裏側の面を含む面の略全面(クッション層14の裏面の略全面)を基材11に対し密着させた状態で貼付けるようにしている(図1(e))。
According to the embodiment described in detail above, the following effects can be obtained.
(1) In the stitch line forming step, the stitch line 17 is formed on the surface of the skin 13 by sewing the cushion layer 14 and the skin 13 together so that a part of the cushion layer 14 in the laminated material 12 is recessed toward the skin 13. (FIG. 1 (c)). In the affixing step, a state where the substantially entire surface of the laminated material 12 including the back side surface of the laminated material 12 (substantially the entire back surface of the cushion layer 14) is in close contact with the base material 11. (Fig. 1 (e)).

そのため、表皮13の一部に窪み部15を有し、その窪み部15の底部にステッチライン17を有する表皮付き製品10を、厳密な位置合わせ作業をせずに製造することができる。   Therefore, it is possible to manufacture the product 10 with the skin having the recess 15 in a part of the skin 13 and the stitch line 17 at the bottom of the recess 15 without performing a strict alignment operation.

(2)ステッチライン形成工程及び貼付け工程では、積層材12として、立体編クッション層からなるクッション層14を表皮13に積層したもの(図1(b))を用いるようにしている。   (2) In the stitch line forming step and the pasting step, as the laminated material 12, a laminate in which a cushion layer 14 made of a three-dimensional knitted cushion layer is laminated on the skin 13 (FIG. 1B) is used.

そのため、ステッチライン形成工程(図1(c))では、立体編クッション層のうちステッチライン17の近くの箇所のみを表皮13側へ引張り、貼付け工程(図1(e))では、ステッチライン17の近くの箇所のみに明確な窪み部15を形成することができる。   Therefore, in the stitch line forming step (FIG. 1 (c)), only the portion near the stitch line 17 in the three-dimensional knitted cushion layer is pulled toward the skin 13 side, and in the attaching step (FIG. 1 (e)), the stitch line 17 A clear recess 15 can be formed only in the vicinity of the.

(3)貼付け工程では、基材11及び積層材12に対し、それらの厚み方向についての両側から、互いに接近させる方向へ押付ける力を加え、積層材12が基材11に貼付けられた後に上記押付け力を解除するようにしている。   (3) In the pasting step, the pressing force is applied to the base material 11 and the laminated material 12 from both sides in the thickness direction in the direction in which the base material 11 and the laminated material 12 approach each other. The pressing force is released.

そのため、上記押付け力を加えることにより、クッション層14を基材11側へ圧縮して、積層材12の裏側の面であって、共縫いされた箇所の裏側の面を含む面の略全面(クッション層14の裏面の略全面)を基材11に密着させた状態で好適に貼付けることができる。   Therefore, by applying the pressing force, the cushion layer 14 is compressed to the base material 11 side, and the substantially entire surface (including the back side surface of the co-sewn portion of the laminated material 12). The substantially entire back surface of the cushion layer 14 can be attached in a state of being in close contact with the substrate 11.

また、上記貼付けの後に押付け力を解除することにより、クッション層14のうち共縫いされていない箇所では、自身の弾性復元力により復元させつつ、共縫いされた箇所では、糸により弾性復元を制限することで、積層材12の一部に、基材11側へ窪み、かつ底部にステッチライン17を有する窪み部15を好適に形成することができる。   In addition, by releasing the pressing force after the pasting, the elastic recovery force is restricted by the elastic resilience of the cushion layer 14 at the portion that is not co-sewn, and the elastic recovery is limited by the thread at the co-sewn location. By doing so, it is possible to suitably form a recessed portion 15 that is recessed toward the base material 11 side and has the stitch line 17 at the bottom portion in a part of the laminated material 12.

なお、上記実施形態は、これを以下のように変更した変形例として実施することもできる。
・表皮13として、合成皮革に代えて本革からなるものが用いられてもよい。
In addition, the said embodiment can also be implemented as a modification which changed this as follows.
-As the skin 13, what consists of genuine leather instead of a synthetic leather may be used.

・クッション層14として、立体編クッション層に代えて、ウレタンフォーム、エチレンフォーム、プロピレンフォーム等の発泡材からなるものが用いられてもよい。これらの発泡材には、気泡が連通していて柔らかく、復元性を有するという特徴がある。   The cushion layer 14 may be made of a foam material such as urethane foam, ethylene foam, or propylene foam instead of the three-dimensional knitted cushion layer. These foams are characterized in that the bubbles are in communication and are soft and have restorability.

・積層材形成工程において、クッション層14は表皮13に対し、接着剤に代えて両面テープ又は粘着剤により貼付けられてもよい。
同様に、貼付け工程において、積層材12は基材11に対し、接着剤に代えて両面テープ又は粘着剤により貼付けられてもよい。
In the laminated material forming step, the cushion layer 14 may be attached to the skin 13 with a double-sided tape or an adhesive instead of the adhesive.
Similarly, in the attaching step, the laminated material 12 may be attached to the base material 11 with a double-sided tape or an adhesive instead of the adhesive.

・ステッチライン17は、複数の縫い目21が、窪み部15の延びる方向に対し、それぞれ一定の角度で傾斜した状態で配列されることにより、全体として線状をなすように配列されたものであってもよい。このような縫い目21の配列形態は、斜めステッチ、傾斜ステッチ等と呼ばれることもある。さらには、ステッチライン17は、上述したストレートステッチと傾斜ステッチとが交互に配列されたものであってもよい。   The stitch line 17 is arranged so as to form a linear shape as a whole by arranging a plurality of seams 21 in an inclined state with respect to the direction in which the recess 15 extends. May be. Such an arrangement form of the seams 21 is sometimes called an oblique stitch, an inclined stitch, or the like. Furthermore, the stitch line 17 may be one in which the above-described straight stitch and inclined stitch are alternately arranged.

・上記製造方法は、「シングルステッチ」、「ダブルステッチ」と呼ばれる形態で一対の積層材12が結合された表皮付き製品10にも適用可能である。
なお、以下の説明では、積層材12、表皮13、クッション層14をはじめとして一対ずつ用いられるものが出てくるため、それらを区別する目的で、図面の左側に位置するものについては符号の後に「L」を付し、図面の右側に位置するものについては符号の後に「R」を付すことにする。
The above manufacturing method can also be applied to the skinned product 10 in which a pair of laminated materials 12 are combined in a form called “single stitch” or “double stitch”.
In addition, in the following description, since the laminated material 12, the skin 13, and the cushion layer 14 are used one by one, for the purpose of distinguishing them, those located on the left side of the drawing are denoted by reference numerals. “L” is attached, and those located on the right side of the drawing are attached with “R” after the reference numeral.

上記形態によって一対の積層材12L,12Rが結合される場合には、途中の段階として、図6に示す「インステッチ」と呼ばれる形態が採られる。
インステッチでは、各表皮13L,13Rが隣り合わされた状態で一対の積層材12L,12Rが重ねられる。両積層材12L,12Rは、周縁部同士が縫合されることで結合される。両積層材12L,12Rにおいて縫い代31L,31Rを除く箇所(以下、「一般部32L,32R」という)が開かれることにより、表皮13L,13Rの多くが表側に位置させられる。各縫い代31L,31Rは重なった、又は接近した状態となり、一般部32L,32Rに対し、それらの裏側(図6の下側)で略直交した状態となる。この場合、縫合部33及び両縫い代31L,31Rは、表側(図6の上側)からは見えない、又は見えにくい。
When the pair of laminated materials 12L and 12R are joined according to the above form, a form called “in-stitch” shown in FIG. 6 is adopted as an intermediate stage.
In the in-stitch, the pair of laminated materials 12L and 12R are overlapped with the skins 13L and 13R being adjacent to each other. Both laminated materials 12L and 12R are joined together by stitching the peripheral edges. Many portions of the skins 13L and 13R are positioned on the front side by opening portions (hereinafter referred to as “general portions 32L and 32R”) excluding the sewing allowances 31L and 31R in both the laminated materials 12L and 12R. The seams 31L and 31R overlap or approach each other, and are substantially orthogonal to the general portions 32L and 32R on the back side (lower side in FIG. 6). In this case, the stitching portion 33 and the seam allowances 31L and 31R are invisible or difficult to see from the front side (upper side in FIG. 6).

図3は、シングルステッチと呼ばれる形態で一対の積層材12L,12Rが結合された状態を示している。この例では、上記「インステッチ(図6参照)」で結合された一対の積層材12L,12Rのうち、両縫い代31L,31Rが重ねられた状態で、一方(図3の左方)の一般部32L側へ折り曲げられ、その一般部32Lの裏側に重ねられる。そして、これらの一般部32L及び両縫い代31L,31Rに対し、ステッチライン形成工程が行なわれる。また、積層材12L,12Rの裏側の面であって、共縫いされた箇所の裏側の面を含む面の略全面、この場合、一般部32L(クッション層14L)の裏面の大部分と、縫い代31R及び一般部32R(ともにクッション層14R)の各裏面とが、貼付け工程において、基材11に貼付けられる対象とされる。   FIG. 3 shows a state in which a pair of laminated materials 12L and 12R are joined in a form called single stitch. In this example, among the pair of laminated materials 12L and 12R joined by the above-mentioned “in-stitch (see FIG. 6)”, one of the general ones (left side in FIG. 3) with the seam allowances 31L and 31R overlapped. It is bent to the side of the part 32L and overlapped on the back side of the general part 32L. Then, a stitch line forming step is performed on the general portion 32L and the sewing margins 31L and 31R. Further, it is the back surface of the laminated materials 12L and 12R and substantially the entire surface including the back surface of the jointed portion, in this case, most of the back surface of the general portion 32L (cushion layer 14L), and the seam allowance Each back surface of 31R and the general part 32R (both cushion layers 14R) is a target to be pasted to the base material 11 in the pasting step.

なお、この例では、段差部34を有する基材11が用いられ、両積層材12L,12Rのうち共縫いされた部分(縫い代31L,31R)が段差部34に配置されて、上記の貼付けが行なわれる。この貼付けに伴い、底部にステッチライン17Lを有する窪み部15Lは、一方の一般部32Lのうち縫い代31L,31Rの上側に形成される。   In addition, in this example, the base material 11 which has the level | step-difference part 34 is used, and the part (sewing allowance 31L, 31R) of both laminated materials 12L and 12R is arrange | positioned in the level | step-difference part 34, and said sticking is carried out. Done. Along with this pasting, the recessed portion 15L having the stitch line 17L at the bottom is formed above the seams 31L and 31R in the one general portion 32L.

図4は、ダブルステッチと呼ばれる形態で、一対の積層材12L,12Rが結合された状態を示している。この例では、上記「インステッチ(図6)」で結合された一対の積層材12L,12Rのうち、両縫い代31L,31Rが開かれる。   FIG. 4 shows a state in which a pair of laminated materials 12L and 12R are joined in a form called double stitching. In this example, of the pair of laminated materials 12L and 12R joined by the “in-stitch (FIG. 6)”, both seam allowances 31L and 31R are opened.

一方(図4の左方)の縫い代31Lが一般部32L側へ折り曲げられ、その一般部32Lの裏側に重ねられる。そして、これらの一般部32L及び縫い代31Lに対し、ステッチライン形成工程が行なわれる。また、積層材12Lの裏側の面であって、共縫いされた箇所の裏側の面を含む面の略全面、この場合、縫い代31Lの表皮13Lと一般部32L(クッション層14L)の裏面の大部分とが、貼付け工程において、基材11に貼付けられる対象とされる。   One (left side in FIG. 4) seam allowance 31L is bent toward the general portion 32L and overlapped on the back side of the general portion 32L. Then, a stitch line forming step is performed on the general portion 32L and the sewing allowance 31L. Further, it is the back side surface of the laminated material 12L and substantially the entire surface including the back side surface of the co-sewn part, in this case, the large size of the back surface of the skin 13L of the seam allowance 31L and the general portion 32L (cushion layer 14L). The part is a target to be attached to the base material 11 in the attaching step.

他方(図4の右方)の縫い代31Rが一般部32R側へ折り曲げられ、その一般部32Rの裏側に重ねられる。そして、これらの一般部32R及び縫い代31Rに対し、ステッチライン形成工程が行なわれる。また、積層材12Rの裏側の面であって、共縫いされた箇所の裏側の面を含む面の略全面、この場合、縫い代31Rの表皮13と一般部32R(クッション層14R)の裏面の大部分とが、貼付け工程において、基材11に貼付けられる対象とされる。   The other seam allowance 31R (on the right side in FIG. 4) is bent toward the general portion 32R and overlapped on the back side of the general portion 32R. Then, a stitch line forming step is performed on the general portion 32R and the sewing allowance 31R. Further, it is the back side surface of the laminated material 12R and substantially the entire surface including the back side surface of the co-sewn part, in this case, the outer skin 13 of the seam allowance 31R and the large back surface of the general portion 32R (cushion layer 14R). The part is a target to be attached to the base material 11 in the attaching step.

なお、この例では、凹部35を有する基材11が用いられ、各積層材12L,12Rのうち共縫いされた部分の一部(縫い代31L,31R)が凹部35内に配置されて、上記の貼付けが行なわれる。この貼付けに伴い、底部にステッチライン17L,17Rを有する窪み部15L,15Rは、各一般部32L,32Rのうち縫い代31L,31Rの上側に形成される。   In addition, in this example, the base material 11 which has the recessed part 35 is used, and a part (sewing allowance 31L, 31R) of the part sewn together among each laminated material 12L, 12R is arrange | positioned in the recessed part 35, and said above-mentioned Pasting is performed. With this pasting, the recessed portions 15L and 15R having the stitch lines 17L and 17R at the bottom are formed above the seams 31L and 31R in the general portions 32L and 32R.

・上記「インステッチ(図6)」と呼ばれる形態で結合された一対の積層材12L,12Rの一般部32L,32Rのそれぞれに対し、上記実施形態と同様の飾りステッチが形成されてもよい。その一例を図5に示す。   A decorative stitch similar to that in the above embodiment may be formed on each of the general portions 32L and 32R of the pair of laminated materials 12L and 12R connected in a form called the “in-stitch (FIG. 6)”. An example is shown in FIG.

この場合、両縫い代31L,31Rは、上記シングルステッチやダブルステッチとは異なり折り曲げられず、両一般部32L,32Rに対し、それらの裏側(図5の下側)で略直交している。各一般部32L,32Rに対し、ステッチライン形成工程が行なわれる。また、積層材12L,12Rの裏側の面であって、共縫いされた箇所の裏側の面を含む面の略全面、この場合、少なくとも各一般部32L,32Rの裏面が、貼付け工程において、基材11に貼付けられる対象とされる。この貼付けに伴い、底部にステッチライン17L,17Rを有する窪み部15L,15Rは、各一般部32L,32Rに形成される。   In this case, unlike the single stitch or double stitch, both seam allowances 31L and 31R are not bent and are substantially orthogonal to both general portions 32L and 32R on their back sides (lower side in FIG. 5). A stitch line forming step is performed on each of the general portions 32L and 32R. In addition, in the pasting step, substantially the entire surface of the laminated materials 12L and 12R including the back surface of the jointed portion, in this case, at least the back surfaces of the general portions 32L and 32R The object is affixed to the material 11. Along with this pasting, the recessed portions 15L and 15R having the stitch lines 17L and 17R at the bottom are formed in the general portions 32L and 32R.

なお、この場合には、凹部36を有する基材11が用いられ、両縫い代31L,31Rが凹部36内に配置される。
・上記製造方法は、自動車用内装品に限らず、ステッチライン17を表皮13の表面に有する表皮付き製品に広く適用可能である。
In this case, the base material 11 having the recess 36 is used, and both seam allowances 31L and 31R are arranged in the recess 36.
The above manufacturing method is not limited to automobile interior parts, and can be widely applied to products with a skin having the stitch line 17 on the surface of the skin 13.

その他、前記各実施形態から把握できる技術的思想について、それらの効果とともに記載する。
(A)請求項1〜3のいずれか1項に記載の表皮付き製品の製造方法において、前記積層材として、前記表皮が0.35〜1.5mmの厚みを有するものが用いられる。
In addition, the technical ideas that can be grasped from the respective embodiments will be described together with their effects.
(A) In the method for manufacturing a product with a skin according to any one of claims 1 to 3, a material having a thickness of 0.35 to 1.5 mm is used as the laminated material.

上記の条件を満たす積層材が用いられて、ステッチライン形成工程及び貼付け工程が行なわれることで、表皮のうちステッチラインの近くにシワが少ない又は無い見栄えのよい窪み部が形成される。   By using the laminated material that satisfies the above conditions and performing the stitch line forming step and the pasting step, a dent portion with a small or no wrinkle appearance is formed near the stitch line in the epidermis.

(B)請求項1〜3及び上記(A)のいずれか1項に記載の表皮付き製品の製造方法において、前記積層材として、前記クッション層が1.5〜3.5mmの厚みを有するものが用いられる。   (B) In the method for manufacturing a product with a skin according to any one of claims 1 to 3 and (A), the cushion layer has a thickness of 1.5 to 3.5 mm as the laminated material. Is used.

上記の条件を満たす積層材が用いられて、ステッチライン形成工程及び貼付け工程が行なわれることで、積層材の一部に、基材側へ適度に窪む、見栄えのより窪み部が形成される。   A laminated material that satisfies the above conditions is used, and a stitch line forming step and a pasting step are performed, so that a portion of the laminated material is appropriately depressed toward the base material, and a dent portion with a good appearance is formed. .

10…表皮付き製品、11…基材、12,12L,12R…積層材、13,13L,13R…表皮、14,14L,14R…クッション層、15,15L,15R…窪み部、17,17L,17R…ステッチライン、21…縫い目。   DESCRIPTION OF SYMBOLS 10 ... Product with skin, 11 ... Base material, 12, 12L, 12R ... Laminated material, 13, 13L, 13R ... Skin, 14, 14L, 14R ... Cushion layer, 15, 15L, 15R ... Recessed part, 17, 17L, 17R ... Stitch line, 21 ... Seam.

Claims (2)

基材と、
前記基材上に設けられ、かつ表皮の裏側に、同表皮よりも柔らかいクッション層を積層してなる積層材と、
前記表皮の表面に沿って線状をなすように配列された複数の縫い目からなるステッチラインと
を備える表皮付き製品を製造する方法であって、
前記積層材における前記クッション層の一部が前記表皮側へ窪むように前記クッション層及び前記表皮を共縫いすることにより、前記表皮の表面に前記ステッチラインを形成するステッチライン形成工程と、
前記積層材の裏側の面であって、前記共縫いされた箇所の裏側の面を含む面の略全面を前記基材に対し密着させた状態で貼付ける貼付け工程と
が少なくとも行なわれ、
前記ステッチライン形成工程及び前記貼付け工程では、前記積層材として、前記表皮に立体編クッション層が積層されたものが用いられ、
前記ステッチライン形成工程では、前記立体編クッション層の剛性を利用することにより、前記クッション層の圧縮が抑制されることを特徴とする表皮付き製品の製造方法。
A substrate;
A laminated material provided on the base material and laminated on the back side of the skin with a softer cushion layer than the skin; and
A method of manufacturing a product with an epidermis comprising a stitch line composed of a plurality of seams arranged so as to form a line along the surface of the epidermis,
A stitch line forming step of forming the stitch line on the surface of the skin by co-sewing the cushion layer and the skin so that a part of the cushion layer in the laminated material is recessed toward the skin;
At least a pasting step of pasting in a state where the entire surface of the laminated material is in close contact with the base material, including the back side surface of the co-sewn location ,
In the stitch line forming step and the pasting step, as the laminated material, a material in which a three-dimensional knitted cushion layer is laminated on the skin is used.
In the said stitch line formation process, compression of the said cushion layer is suppressed by utilizing the rigidity of the said three-dimensional knitted cushion layer, The manufacturing method of the product with a skin characterized by the above-mentioned .
前記貼付け工程では、前記基材及び前記積層材の少なくとも一方に対し、互いに接近させる方向へ押付ける力が加えられ、前記積層材が前記基材に貼付けられた後に前記力が解除される請求項1に記載の表皮付き製品の製造方法。 In the sticking step, a force is applied to at least one of the base material and the laminated material in a direction to approach each other, and the force is released after the laminated material is stuck to the base material. A method for producing a product with an epidermis according to 1 .
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