WO2019064327A1 - Automobile interior part - Google Patents

Automobile interior part Download PDF

Info

Publication number
WO2019064327A1
WO2019064327A1 PCT/JP2017/034658 JP2017034658W WO2019064327A1 WO 2019064327 A1 WO2019064327 A1 WO 2019064327A1 JP 2017034658 W JP2017034658 W JP 2017034658W WO 2019064327 A1 WO2019064327 A1 WO 2019064327A1
Authority
WO
WIPO (PCT)
Prior art keywords
resin
sheet material
layer
resin sheet
surface reinforcing
Prior art date
Application number
PCT/JP2017/034658
Other languages
French (fr)
Japanese (ja)
Inventor
関　伸明
Original Assignee
河西工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 河西工業株式会社 filed Critical 河西工業株式会社
Priority to PCT/JP2017/034658 priority Critical patent/WO2019064327A1/en
Publication of WO2019064327A1 publication Critical patent/WO2019064327A1/en

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/04—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities
    • B29C44/06—Making multilayered articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered 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
    • B32B5/22—Layered 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/02—Internal Trim mouldings ; Internal Ledges; Wall liners for passenger compartments; Roof liners

Definitions

  • the present invention relates to an automobile interior part such as a car door trim attached to the inside of a vehicle body panel, for example, and in particular, it is lightweight and is hard to have indentations and dents on its surface.
  • a car interior part of this type for example, a car door trim mounted on the inner surface of a car body door panel is known.
  • thermoplastic foam resin sheet material foamed at a foaming ratio of, for example, 3 to 10 times is prepared as a molding base material, and this is heated. It is manufactured by the method of press-molding to a required shape.
  • the foamed resin sheet material as described above contains a large number of cells (cells) generated by the foaming of the resin (see, for example, reference numeral 32 in [Selection Diagram] of Patent Document 1), There is only an unfoamed thin resin skin layer necessarily produced by cooling in a mold in the resin foaming process on the front and back surfaces of such a foamed resin sheet material (for example, [Selection of Patent Document 1 According to the reference numerals 31 and 33), according to the conventional automobile door trim manufactured using such a foamed resin sheet material as a molding base substrate, it is lightweight, but an indentation or dent is formed on the surface even with a relatively weak force. It has the problem of being easy to attach.
  • the present invention has been made to solve the above-mentioned problems, and an object thereof is to provide an automobile interior part which is lightweight and which is hard to have an indentation or dent on the surface.
  • the present invention is an interior part for an automobile formed by molding a resin plate material into a required shape in a heated state, and the resin plate material comprises a large number of air bubbles generated by foaming of resin.
  • a resin comprising a foamed resin sheet material layer, and a surface reinforcing resin layer provided on both sides or one side of the foamed resin sheet material layer, wherein the resin constituting the surface reinforced resin layer is the foamed resin sheet material layer
  • the thickness dimension of the surface reinforcing resin layer is a dimension larger than the average particle diameter of the plurality of air bubbles.
  • the surface reinforcing resin layer may be provided on one side of the foamed resin sheet material layer.
  • the surface reinforcing resin layer may be provided on both sides of the foamed resin sheet material layer.
  • the surface reinforcing resin layer is provided on both sides or one side of the foamed resin sheet material layer, and the resin constituting the surface reinforcing resin layer is The non-foamed resin is formed separately from the resin constituting the foamed resin sheet material layer, and the thickness dimension of the surface reinforcing resin layer is the average of many bubbles contained in the foamed resin sheet material layer. The size was larger than the particle size.
  • the thickness dimension of the surface reinforcing resin layer is larger than the average particle diameter of the bubbles of the foamed resin sheet material layer, for example, a force that causes an indentation or a dent to act on the interior parts for automobiles
  • a part of the surface reinforcing resin layer does not easily fall into the bubbles of the foamed resin sheet material layer, and such depression generates on the surface of interior parts for automobiles. It is possible to provide an automotive interior part that is light in weight and resistant to indentations and dents and can be effectively prevented.
  • FIG. 1 The schematic diagram of the door trim for motor vehicles to which the interior parts for motor vehicles concerning this invention are applied.
  • the arrow sectional drawing in AA line of FIG. (A)-(d) is explanatory drawing of the process of manufacturing the door trim for motor vehicles of FIG.
  • FIG. 1 is a schematic view of a car door trim to which an interior part of a car according to the present invention is applied
  • FIG. 2 is a sectional view taken along the line AA of FIG. 1
  • FIGS. 3 (a) to 3 (d) are FIG. It is explanatory drawing of the process of manufacturing the door trim for motor vehicles.
  • the door trim DT for an automobile shown in FIG. 1 is formed by pressing a resin plate material 1 (see FIG. 3A) into a desired shape in a heated state, and the door pocket W1, the armrest W2, the speaker grille as its detailed configuration It has W3 and so on.
  • the resin sheet material 1 has a foamed resin sheet material layer 2 containing a large number of air bubbles generated by resin foaming, and a surface reinforcing resin layer 3 provided on the foamed resin sheet material layer 2. , Is configured by. Since the front and back surfaces of the foamed resin sheet material layer 2 are covered with an unfoamed thin resin skin layer (not shown) which is inevitably generated by cooling in the mold in the resin foaming process, such resin skin The resin skin layer intervenes between the foamed resin sheet material layer 2 and the surface reinforcing resin layer 3 unless the layer is intentionally excluded. In this case, the surface reinforcing resin layer 3 is provided on the skin layer of the foamed resin sheet material layer 2.
  • the surface reinforcing resin layer 3 is provided on both surfaces of the foamed resin sheet material layer 2 in the automobile door trim DT of FIG. 1, but it is limited to this Absent. Although illustration is omitted, the surface reinforcing resin layer 3 may be provided only on one side of the foamed resin sheet material layer 2. As shown in FIG. 2, as the resin sheet material 1, one in which the foamed resin sheet material layer 2 is provided on both sides of the surface reinforcing resin layer 3 is adopted, or a foamed resin sheet is formed on only one surface of the surface reinforcing resin layer 3 It is possible to adopt one provided with the material layer 2 or to appropriately change this point as needed.
  • the resin constituting the surface reinforcing resin layer 3 is a non-foamed resin different from the resin constituting the foamed resin sheet material layer 2 (for example, the same kind or different resin as the resin constituting the foamed resin sheet material layer 2)
  • the thickness dimension of the surface reinforcing resin layer 3 is configured to be larger than the average particle diameter of a large number of cells CL (cells) contained in the foamed resin sheet material layer 2.
  • the expansion ratio of the foamed resin sheet material layer 2 can be appropriately changed as needed.
  • the foaming ratio of the foamed resin sheet material layer 2 is 3 to 10 times.
  • the particle diameter of the large number of cells CL (cells) contained in the foamed resin sheet material layer 2 foamed at such a foaming ratio is 400 ⁇ m at maximum and 20 ⁇ m at minimum. The average was found to be 200 ⁇ m.
  • the thickness dimension of the surface reinforcing resin layer 3 is larger than the average particle diameter (200 ⁇ m in the above example) of the large number of cells CL (cells) contained in the foamed resin sheet material layer 2 Since it is a requirement, the thickness dimension of the surface reinforcing resin layer 3 is set to be a dimension exceeding 200 ⁇ m. On the other hand, when the thickness dimension of the surface reinforcing resin layer 3 is set to be larger than 800 ⁇ m, the weight of the surface reinforcing resin layer 3 makes the overall weight of the automobile door trim DT too heavy.
  • the thickness dimension of the surface reinforcing resin layer 3 is 200 ⁇ m or more and 800 ⁇ m or less. preferable.
  • the foamed resin sheet material layer 2 is formed by foaming a thermoplastic resin mixed with a foaming agent, and as the thermoplastic resin, for example, polyethylene resin, polypropylene resin, polystyrene resin, polyethylene terephthalate resin, polyvinyl alcohol
  • a resin based on a vinyl resin, a vinyl chloride resin, a polyamide based resin, a polyacetal based resin, a polycarbonate based resin, an ionomer based resin, an acrylonitrile / butadiene / styrene (ABS) resin or the like can be employed.
  • a foaming agent to mix organic foaming agents, such as azodicarbonamide, or inorganic foaming agents, such as sodium bicarbonate, can be used, for example.
  • the resin plate material 1 shown in FIG. 3A is prepared as a molding base material, and the prepared resin plate material 1 is heated by a heater (heating step).
  • the prepared resin sheet material 1 is composed of a foamed resin sheet material layer 2 containing a large number of air bubbles generated by foaming of the resin, and a surface reinforcing resin layer 3 provided on both sides of the foamed resin sheet material layer 2
  • the resin constituting the surface reinforcing resin layer 3 is composed of an unfoamed resin different from the resin constituting the foamed resin sheet material layer 2, and the thickness dimension of the surface reinforcing resin layer 3 is a foamed resin sheet material
  • the size (for example, 200 ⁇ m or more and 800 ⁇ m or less of the previous example) is larger than the average particle diameter of the large number of cells CL (cells) included in the layer 2.
  • the heated resin sheet material 1 is set in the mold 100 as shown in FIG. 3 (b).
  • FIG. 3 (b) as a specific configuration example of the mold 100, a configuration in which the core mold 101 and the cavity mold 102 are vertically opposed to each other, and between the core mold 101 and the cavity mold 101.
  • the structure by which the resin board raw material 1 is set to is employ
  • the cavity mold 101 is made to approach the core mold 101 relatively by a predetermined amount, and the core mold 101 and By pressing the resin plate material 1 with the cavity mold 101, a car door trim DT having a required shape is obtained from the resin plate material 1 as a door trim forming material.
  • the outer peripheral portion of the resin sheet material 1 is in a state where a predetermined amount protrudes from the core mold 101 and the molding surface ranges S1 and S2 of the cavity type. It is cut and removed as unnecessary waste (see FIG. 3 (d)). This cut removal may be performed simultaneously with the above-described press formation by further bringing the cavity mold 101 closer to the core mold 101 by a predetermined amount as shown in FIG. 3D. It can also be performed in a post-process separate from press molding.
  • the automobile door trim DT having a required shape is obtained from the resin plate material 1 by press molding, but instead, the required shape for the resin plate material 1 is obtained by known vacuum forming. You may get a car door trim DT.
  • the surface reinforcing resin layer 3 is provided on both sides or one side of the foamed resin sheet material layer 2 as its specific structure, and the surface reinforcing resin layer 3
  • the resin to be constituted is made of an unfoamed resin different from the resin constituting the foamed resin sheet material layer 2, and the thickness dimension of the surface reinforcing resin layer 3 is included in the foamed resin sheet material layer 2
  • the size is larger than the average particle size of the large number of air bubbles CL (cells).
  • the thickness dimension of the surface reinforcing resin layer 2 is larger than the average particle diameter of the air bubbles CL (cells) of the foamed resin sheet material layer 2, for example, an indentation or dent is generated on the automobile door trim DT.
  • an indentation or dent is generated on the automobile door trim DT.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)

Abstract

[Problem] To provide an automobile interior part which is lightweight and unsusceptible to indentations or dent. [Solution] According to the present invention, an automobile door trim DT (automobile interior part) is obtained by molding a resin plate raw material 1, while heated, into a desired shape. The resin plate raw material 1 is configured from: a foamed resin sheet material layer 2 that includes a plurality of air bubbles CL (cells) generated by foaming a resin; and an outer surface reinforcing resin layer 3 provided on the foamed resin sheet material layer 2. The resin that constitutes the outer surface reinforcing resin layer 3 is a non-foamed resin different from the resin that constitutes the foamed resin sheet material layer 2. The thickness dimension of the outer surface reinforcing resin layer 3 is greater than the average particle diameter of the plurality of air bubbles.

Description

自動車用内装部品Automotive interior parts
　本発明は、例えば車体パネルの内側に取付けられる自動車用ドアトリムのような自動車用内装部品に関し、特に、軽量で、かつ表面に圧痕や打痕が付き難いものである。 The present invention relates to an automobile interior part such as a car door trim attached to the inside of a vehicle body panel, for example, and in particular, it is lightweight and is hard to have indentations and dents on its surface.
　従来、この種の自動車用内装部品としては、例えば、車体ドアパネルの内面に装着される自動車用ドアトリムが知られている。 Conventionally, as a car interior part of this type, for example, a car door trim mounted on the inner surface of a car body door panel is known.
　この種の自動車用ドアトリムは、軽量化を図るために、成形ベース基材として、例えば３倍から１０倍の発泡倍率で発泡させた熱可塑性の発泡樹脂シート材を用意し、これを加熱した状態で所要形状にプレス成形するという方法で製造している。 In this type of automobile door trim, in order to reduce the weight, a thermoplastic foam resin sheet material foamed at a foaming ratio of, for example, 3 to 10 times is prepared as a molding base material, and this is heated. It is manufactured by the method of press-molding to a required shape.
　しかしながら、前記のような発泡樹脂シート材は、樹脂の発泡によって生じた多数の気泡（セル）を含んでいること（例えば、特許文献１の［選択図］中の符号３２を参照）、および、そのような発泡樹脂シート材の表裏面には、樹脂発泡工程における金型での冷却によって必然的に生成される未発泡の薄い樹脂スキン層しか存在しないこと（例えば、特許文献１の［選択図］中の符号３１、３３を参照）から、かかる発泡樹脂シート材を成形ベース基材として製造した従来の自動車用ドアトリムによると、軽量であるが、比較的弱い力でも表面に圧痕や打痕が付き易いという問題点を有している。 However, the foamed resin sheet material as described above contains a large number of cells (cells) generated by the foaming of the resin (see, for example, reference numeral 32 in [Selection Diagram] of Patent Document 1), There is only an unfoamed thin resin skin layer necessarily produced by cooling in a mold in the resin foaming process on the front and back surfaces of such a foamed resin sheet material (for example, [Selection of Patent Document 1 According to the reference numerals 31 and 33), according to the conventional automobile door trim manufactured using such a foamed resin sheet material as a molding base substrate, it is lightweight, but an indentation or dent is formed on the surface even with a relatively weak force. It has the problem of being easy to attach.
　前記のような圧痕や打痕が付き易いという問題点は、前述の発泡樹脂シート材を成形ベース基材として製造した自動車用ドアトリム以外の自動車用内装部品（例えば、ラゲッジルームの側面に配置されるラゲッジサイドトリム等）でも、同様に生じる。 The above-mentioned problem that indentations and dents easily occur is that automotive interior parts other than automobile door trims manufactured using the above-mentioned foamed resin sheet material as a molding base substrate (for example, disposed on the side of luggage room) The same applies to luggage side trim, etc.).
特開２０１２－５２６１３号公報JP 2012-52613 A
　本発明は前記問題点を解決するためになされたものであり、その目的は、軽量で、かつ表面に圧痕や打痕が付き難い自動車用内装部品を提供することである。 The present invention has been made to solve the above-mentioned problems, and an object thereof is to provide an automobile interior part which is lightweight and which is hard to have an indentation or dent on the surface.
　前記目的を達成するために、本発明は、樹脂板素材を加熱した状態で所要形状に成形してなる自動車用内装部品であって、前記樹脂板素材は、樹脂の発泡によって生じた多数の気泡を含む発泡樹脂シート材層と、前記発泡樹脂シート材層の両面または片面に設けられた表面補強樹脂層と、によって構成され、前記表面補強樹脂層を構成する樹脂は、前記発泡樹脂シート材層を構成する樹脂とは別の発泡していない樹脂であること、および、前記表面補強樹脂層の厚み寸法は、前記多数の気泡の平均粒径より大きい寸法であることを特徴とする。
　前記本発明において、前記表面補強樹脂層は、前記発泡樹脂シート材層の片面に設けられていることを特徴としてもよい。 In order to achieve the above object, the present invention is an interior part for an automobile formed by molding a resin plate material into a required shape in a heated state, and the resin plate material comprises a large number of air bubbles generated by foaming of resin. A resin comprising a foamed resin sheet material layer, and a surface reinforcing resin layer provided on both sides or one side of the foamed resin sheet material layer, wherein the resin constituting the surface reinforced resin layer is the foamed resin sheet material layer And the thickness dimension of the surface reinforcing resin layer is a dimension larger than the average particle diameter of the plurality of air bubbles.
In the present invention, the surface reinforcing resin layer may be provided on one side of the foamed resin sheet material layer.
　前記本発明において、前記表面補強樹脂層は、前記発泡樹脂シート材層の両面に設けられていることを特徴としてもよい。 In the present invention, the surface reinforcing resin layer may be provided on both sides of the foamed resin sheet material layer.
　本発明では、自動車用内装部品の具体的な構成として、前記の通り、発泡樹脂シート材層の両面または片面に表面補強樹脂層が設けられる構成、および、その表面補強樹脂層を構成する樹脂は、発泡樹脂シート材層を構成する樹脂とは別の発泡していない樹脂で構成し、さらに、その表面補強樹脂層の厚み寸法は、発泡樹脂シート材層に含まれている多数の気泡の平均粒径より大きい寸法となるように構成した。このため、発泡樹脂シート材層の気泡の平均粒径よりも表面補強樹脂層の厚み寸法の方が大きいから、例えば自動車用内装部品に対して圧痕や打痕を生じさせるような力が作用したときに、発泡樹脂シート材層と表面補強樹脂層の境界付近において表面補強樹脂層の一部が発泡樹脂シート材層の気泡内に落ち込み難く、そのような落ち込みによって自動車用内装部品の表面に発生する圧痕や打痕を効果的に防止することができ、軽量で、かつ圧痕や打痕が付き難い自動車用内装部品を提供し得る。 In the present invention, as a specific constitution of the interior part for automobile, as described above, the surface reinforcing resin layer is provided on both sides or one side of the foamed resin sheet material layer, and the resin constituting the surface reinforcing resin layer is The non-foamed resin is formed separately from the resin constituting the foamed resin sheet material layer, and the thickness dimension of the surface reinforcing resin layer is the average of many bubbles contained in the foamed resin sheet material layer. The size was larger than the particle size. For this reason, since the thickness dimension of the surface reinforcing resin layer is larger than the average particle diameter of the bubbles of the foamed resin sheet material layer, for example, a force that causes an indentation or a dent to act on the interior parts for automobiles Sometimes, in the vicinity of the boundary between the foamed resin sheet material layer and the surface reinforcing resin layer, a part of the surface reinforcing resin layer does not easily fall into the bubbles of the foamed resin sheet material layer, and such depression generates on the surface of interior parts for automobiles. It is possible to provide an automotive interior part that is light in weight and resistant to indentations and dents and can be effectively prevented.
本発明に係る自動車用内装部品を適用した自動車用ドアトリムの模式図。The schematic diagram of the door trim for motor vehicles to which the interior parts for motor vehicles concerning this invention are applied. 図1のＡＡ線での矢視断面図。The arrow sectional drawing in AA line of FIG. （ａ）から（ｄ）は図１の自動車用ドアトリムを製造する工程の説明図。(A)-(d) is explanatory drawing of the process of manufacturing the door trim for motor vehicles of FIG.
　以下、本発明を実施するための最良の形態について、添付した図面を参照しながら詳細に説明する。 Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the attached drawings.
　図１は、本発明に係る自動車用内装部品を適用した自動車用ドアトリムの模式図、図２は、図1のＡＡ線での矢視断面図、図３（ａ）から（ｄ）は図１の自動車用ドアトリムを製造する工程の説明図である。 1 is a schematic view of a car door trim to which an interior part of a car according to the present invention is applied, FIG. 2 is a sectional view taken along the line AA of FIG. 1, and FIGS. 3 (a) to 3 (d) are FIG. It is explanatory drawing of the process of manufacturing the door trim for motor vehicles.
　図１の自動車用ドアトリムＤＴは、樹脂板素材１（図３（ａ）参照）を加熱した状態で所要形状にプレス成形したものであって、その詳細構成としてドアポケットＷ１、アームレストＷ２、スピーカーグリルＷ３等を備えている。 The door trim DT for an automobile shown in FIG. 1 is formed by pressing a resin plate material 1 (see FIG. 3A) into a desired shape in a heated state, and the door pocket W1, the armrest W2, the speaker grille as its detailed configuration It has W3 and so on.
　樹脂板素材１は、図２に示したように、樹脂の発泡によって生じた多数の気泡を含む発泡樹脂シート材層２と、発泡樹脂シート材層２上に設けられた表面補強樹脂層３と、によって構成されている。発泡樹脂シート材層２の表裏面はその樹脂発泡工程における金型での冷却によって必然的に生成される未発泡の薄い樹脂スキン層（図示しない）で覆われているから、このような樹脂スキン層を意図的に除外しない限り、発泡樹脂シート材層２と表面補強樹脂層３との間には前記樹脂スキン層が介在する。この場合、表面補強樹脂層３は発泡樹脂シート材層２のスキン層上に設けられる。 As shown in FIG. 2, the resin sheet material 1 has a foamed resin sheet material layer 2 containing a large number of air bubbles generated by resin foaming, and a surface reinforcing resin layer 3 provided on the foamed resin sheet material layer 2. , Is configured by. Since the front and back surfaces of the foamed resin sheet material layer 2 are covered with an unfoamed thin resin skin layer (not shown) which is inevitably generated by cooling in the mold in the resin foaming process, such resin skin The resin skin layer intervenes between the foamed resin sheet material layer 2 and the surface reinforcing resin layer 3 unless the layer is intentionally excluded. In this case, the surface reinforcing resin layer 3 is provided on the skin layer of the foamed resin sheet material layer 2.
　表面補強樹脂層３の具体的な配置構成として、図１の自動車用ドアトリムＤＴでは、その発泡樹脂シート材層２の両面に表面補強樹脂層３を設けているが、これに限定されることはない。図示は省略するが、表面補強樹脂層３は発泡樹脂シート材層２の片面のみに設けられる場合もある。樹脂板素材１として、図２のように表面補強樹脂層３の両面に発泡樹脂シート材層２が設けられているものを採用するか、それとも、表面補強樹脂層３の片面のみに発泡樹脂シート材層２が設けられているものを採用するか、この点については必要に応じて適宜変更することができる。 As a specific arrangement configuration of the surface reinforcing resin layer 3, the surface reinforcing resin layer 3 is provided on both surfaces of the foamed resin sheet material layer 2 in the automobile door trim DT of FIG. 1, but it is limited to this Absent. Although illustration is omitted, the surface reinforcing resin layer 3 may be provided only on one side of the foamed resin sheet material layer 2. As shown in FIG. 2, as the resin sheet material 1, one in which the foamed resin sheet material layer 2 is provided on both sides of the surface reinforcing resin layer 3 is adopted, or a foamed resin sheet is formed on only one surface of the surface reinforcing resin layer 3 It is possible to adopt one provided with the material layer 2 or to appropriately change this point as needed.
　表面補強樹脂層３を構成する樹脂は、発泡樹脂シート材層２を構成する樹脂とは別の発泡していない樹脂（例えば、発泡樹脂シート材層２を構成する樹脂と同種または異種の樹脂）で構成し、また、表面補強樹脂層３の厚み寸法は、発泡樹脂シート材層２に含まれている多数の気泡ＣＬ（セル）の平均粒径より大きい寸法となるように構成してある。このような表面補強樹脂層３については、発泡樹脂シート材層２を構成する発泡樹脂シートの両面あるいは片面に対して、例えば未発泡の溶融樹脂材を射出する方法や、未発泡の樹脂シート材を貼着する方法などによって形成可能である。 The resin constituting the surface reinforcing resin layer 3 is a non-foamed resin different from the resin constituting the foamed resin sheet material layer 2 (for example, the same kind or different resin as the resin constituting the foamed resin sheet material layer 2) In addition, the thickness dimension of the surface reinforcing resin layer 3 is configured to be larger than the average particle diameter of a large number of cells CL (cells) contained in the foamed resin sheet material layer 2. For such a surface-reinforcing resin layer 3, for example, a method of injecting an unfoamed molten resin material to both sides or one side of the foamed resin sheet constituting the foamed resin sheet material layer 2, an unfoamed resin sheet material It can form by the method of sticking, etc.
　発泡樹脂シート材層２の発泡倍率は、必要に応じて適宜変更することができる。図１の自動車用ドアトリムＤＴでは、発泡樹脂シート材層２の発泡倍率として３倍～１０倍を採用している。また、本発明者等の実験結果によると、かかる発泡倍率で発泡した発泡樹脂シート材層２に含まれている多数の気泡ＣＬ（セル）の粒径は、最大で４００μｍ、最小で２０μｍとなり、その平均は２００μｍとなることが判明した。 The expansion ratio of the foamed resin sheet material layer 2 can be appropriately changed as needed. In the automobile door trim DT shown in FIG. 1, the foaming ratio of the foamed resin sheet material layer 2 is 3 to 10 times. Further, according to the experimental results of the present inventors, the particle diameter of the large number of cells CL (cells) contained in the foamed resin sheet material layer 2 foamed at such a foaming ratio is 400 μm at maximum and 20 μm at minimum. The average was found to be 200 μm.
　この場合、表面補強樹脂層３の厚み寸法は、前述の通り、発泡樹脂シート材層２に含まれている多数の気泡ＣＬ（セル）の平均粒径（前述の例では２００μｍ）より大きい寸法であることが要件なので、表面補強樹脂層３の厚み寸法は、２００μｍを越えた寸法となるように設定される。この一方、表面補強樹脂層３の厚み寸法を８００μｍよりも大きく設定した場合は、表面補強樹脂層３の重量によって自動車用ドアトリムＤＴ全体の重量が重くなり過ぎる。 In this case, as described above, the thickness dimension of the surface reinforcing resin layer 3 is larger than the average particle diameter (200 μm in the above example) of the large number of cells CL (cells) contained in the foamed resin sheet material layer 2 Since it is a requirement, the thickness dimension of the surface reinforcing resin layer 3 is set to be a dimension exceeding 200 μm. On the other hand, when the thickness dimension of the surface reinforcing resin layer 3 is set to be larger than 800 μm, the weight of the surface reinforcing resin layer 3 makes the overall weight of the automobile door trim DT too heavy.
　以上のことから、前述のように３倍～１０倍の発泡倍率を適用した発泡樹脂シート材層２を採用した場合、表面補強樹脂層３の厚み寸法は、２００μｍ以上、８００μｍ以下とするのが好ましい。 From the above, when the foamed resin sheet material layer 2 to which the expansion ratio of 3 to 10 times is applied as described above is adopted, the thickness dimension of the surface reinforcing resin layer 3 is 200 μm or more and 800 μm or less. preferable.
　発泡樹脂シート材層２は、発泡剤を混入した熱可塑性樹脂が発泡したものであり、熱可塑性樹脂としては、例えば、ポリエチレン系樹脂、ポリプロピレン系樹脂、ポリスチレン系樹脂、ポリエチレンテレフタレート系樹脂、ポリビニルアルコール系樹脂、塩化ビニル系樹脂、ポリアミド系樹脂、ポリアセタール系樹脂、ポリカーボネート系樹脂、アイオノマー系樹脂、アクリロニトリル／ブタジエン／スチレン（ＡＢＳ）樹脂等を採用することができる。また、混入する発泡剤としては、例えば、アゾジカルボンアミド等の有機発泡剤、あるいは重炭酸ナトリウム等の無機発泡剤を使用することができる。 The foamed resin sheet material layer 2 is formed by foaming a thermoplastic resin mixed with a foaming agent, and as the thermoplastic resin, for example, polyethylene resin, polypropylene resin, polystyrene resin, polyethylene terephthalate resin, polyvinyl alcohol For example, a resin based on a vinyl resin, a vinyl chloride resin, a polyamide based resin, a polyacetal based resin, a polycarbonate based resin, an ionomer based resin, an acrylonitrile / butadiene / styrene (ABS) resin or the like can be employed. Moreover, as a foaming agent to mix, organic foaming agents, such as azodicarbonamide, or inorganic foaming agents, such as sodium bicarbonate, can be used, for example.
　次に、図３（ａ）から（ｄ）を用いて、図１の自動車用ドアトリムを製造する方法の概要（ドアポケット、アームレスト、スピーカーグリル等、ドアトリムの詳細構成の成形を除く。）について説明する。 Next, an outline of a method of manufacturing the automobile door trim of FIG. 1 (except for forming a door pocket, arm rest, speaker grille, and other details of the door trim) will be described with reference to FIGS. 3 (a) to 3 (d). Do.
　図１の自動車用ドアトリムＤＴを製造する際は、成形ベース機材として、図３（ａ）に示した樹脂板素材１を用意し、用意した樹脂板素材１をヒータで加熱する（加熱工程）。用意した樹脂板素材１は、樹脂の発泡によって生じた多数の気泡を含む発泡樹脂シート材層２と、発泡樹脂シート材層２の両面に設けられた表面補強樹脂層３とで構成され、その表面補強樹脂層３を構成する樹脂は、発泡樹脂シート材層２を構成する樹脂とは別の発泡していない樹脂で構成され、また、表面補強樹脂層３の厚み寸法は、発泡樹脂シート材層２に含まれている多数の気泡ＣＬ（セル）の平均粒径より大きい寸法（例えば、前例の２００μｍ以上、８００μｍ以下）となるように構成されたものである。 When the automobile door trim DT shown in FIG. 1 is manufactured, the resin plate material 1 shown in FIG. 3A is prepared as a molding base material, and the prepared resin plate material 1 is heated by a heater (heating step). The prepared resin sheet material 1 is composed of a foamed resin sheet material layer 2 containing a large number of air bubbles generated by foaming of the resin, and a surface reinforcing resin layer 3 provided on both sides of the foamed resin sheet material layer 2 The resin constituting the surface reinforcing resin layer 3 is composed of an unfoamed resin different from the resin constituting the foamed resin sheet material layer 2, and the thickness dimension of the surface reinforcing resin layer 3 is a foamed resin sheet material The size (for example, 200 μm or more and 800 μm or less of the previous example) is larger than the average particle diameter of the large number of cells CL (cells) included in the layer 2.
　前記加熱工程で樹脂板素材１の加熱が完了した後は、その加熱された樹脂板素材１を図３（ｂ）に示したように金型１００にセットする。図３（ｂ）の例では、金型１００の具体的な構成例として、コア型１０１とキャビ型１０２とが上下に対向配置される構成、および、そのコア型１０１とキャビ型１０１との間に樹脂板素材１がセットされる構成を採用しているが、これに限定されることはない。 After the heating of the resin sheet material 1 is completed in the heating step, the heated resin sheet material 1 is set in the mold 100 as shown in FIG. 3 (b). In the example of FIG. 3 (b), as a specific configuration example of the mold 100, a configuration in which the core mold 101 and the cavity mold 102 are vertically opposed to each other, and between the core mold 101 and the cavity mold 101. Although the structure by which the resin board raw material 1 is set to is employ | adopted, it is not limited to this.
　金型１００に対する樹脂板素材１のセット作業が完了した後は、図３（ｃ）に示したように、コア型１０１に対してキャビ型１０１を相対的に所定量接近させ、コア型１０１とキャビ型１０１とで樹脂板素材１をプレス成形することにより、ドアトリム成形素材としての樹脂板素材１から所要形状の自動車用ドアトリムＤＴを得る。 After the setting operation of the resin sheet material 1 with respect to the mold 100 is completed, as shown in FIG. 3C, the cavity mold 101 is made to approach the core mold 101 relatively by a predetermined amount, and the core mold 101 and By pressing the resin plate material 1 with the cavity mold 101, a car door trim DT having a required shape is obtained from the resin plate material 1 as a door trim forming material.
　図３（ｂ）（ｃ）の例では、樹脂板素材１の外周部がコア型１０１とキャビ型の成形面範囲Ｓ１、Ｓ２から所定量はみ出した状態となっており、このはみ出した部分Ｑは不要なカスとしてカット除去される（図３（ｄ）参照）。このカット除去は、図３（ｄ）に示したように、コア型１０１に対してキャビ型１０１を相対的に所定量更に接近させることで、前述のプレス形成と同時に行ってもよいし、またプレス成形とは別の後工程で行うこともできる。 In the example shown in FIGS. 3B and 3C, the outer peripheral portion of the resin sheet material 1 is in a state where a predetermined amount protrudes from the core mold 101 and the molding surface ranges S1 and S2 of the cavity type. It is cut and removed as unnecessary waste (see FIG. 3 (d)). This cut removal may be performed simultaneously with the above-described press formation by further bringing the cavity mold 101 closer to the core mold 101 by a predetermined amount as shown in FIG. 3D. It can also be performed in a post-process separate from press molding.
　図３（ａ）から（ｄ）の例は、プレス成形によって樹脂板素材１から所要形状の自動車用ドアトリムＤＴを得たが、これに代えて、周知の真空成形によって樹脂板素材１から所要形状の自動車用ドアトリムＤＴを得てもよい。 In the examples of FIGS. 3A to 3D, the automobile door trim DT having a required shape is obtained from the resin plate material 1 by press molding, but instead, the required shape for the resin plate material 1 is obtained by known vacuum forming. You may get a car door trim DT.
　以上説明した本実施形態の自動車用ドアトリムＤＴでは、その具体的な構成として、発泡樹脂シート材層２の両面または片面に表面補強樹脂層３が設けられる構成、および、その表面補強樹脂層３を構成する樹脂は、発泡樹脂シート材層２を構成する樹脂とは別の発泡していない樹脂で構成し、さらに、その表面補強樹脂層３の厚み寸法は、発泡樹脂シート材層２に含まれている多数の気泡ＣＬ（セル）の平均粒径より大きい寸法となるように構成した。このため、発泡樹脂シート材層２の気泡ＣＬ（セル）の平均粒径よりも表面補強樹脂層２の厚み寸法の方が大きいから、例えば自動車用ドアトリムＤＴに対して圧痕や打痕を生じさせるような力が作用したときに、発泡樹脂シート材層２と表面補強樹脂層３の境界付近において表面補強樹脂層３の一部が発泡樹脂シート材層２の気泡ＣＬ（セル）内に落ち込み難く、そのような落ち込みによって自動車用ドアトリムＤＴの表面に発生する圧痕や打痕を効果的に防止することができる。 In the automobile door trim DT of the present embodiment described above, the surface reinforcing resin layer 3 is provided on both sides or one side of the foamed resin sheet material layer 2 as its specific structure, and the surface reinforcing resin layer 3 The resin to be constituted is made of an unfoamed resin different from the resin constituting the foamed resin sheet material layer 2, and the thickness dimension of the surface reinforcing resin layer 3 is included in the foamed resin sheet material layer 2 The size is larger than the average particle size of the large number of air bubbles CL (cells). For this reason, since the thickness dimension of the surface reinforcing resin layer 2 is larger than the average particle diameter of the air bubbles CL (cells) of the foamed resin sheet material layer 2, for example, an indentation or dent is generated on the automobile door trim DT. When such a force acts, it is difficult for part of the surface reinforcing resin layer 3 to fall into the air bubbles CL (cells) of the foamed resin sheet material layer 2 near the boundary between the foamed resin sheet material layer 2 and the surface reinforcing resin layer 3 It is possible to effectively prevent indentations and dents generated on the surface of the automobile door trim DT due to such depression.
　本発明は、以上説明した実施形態に限定されるものではなく、本発明の技術的思想内で当分野において通常の知識を有する者により多くの変形が可能である。 The present invention is not limited to the embodiments described above, and many modifications can be made by those skilled in the art within the technical concept of the present invention.
　前記実施形態では、本発明を自動車用ドアトリムに適用した例について説明したが、この適用例に限定されることはなく、本発明は、例えばラゲッジサイドトリム等のような自動車用内装部品にも適用可能である。 Although the said embodiment demonstrated the example which applied this invention to the door trim for motor vehicles, it is not limited to this application example, For example, this invention is applied also to the interior parts for motor vehicles, such as a luggage side trim etc. It is possible.
１　樹脂板素材
２　発泡樹脂シート材層
３　表面補強樹脂層
ＤＴ　自動車用ドアトリム
ＣＬ　気泡 1 resin board material 2 foamed resin sheet material layer 3 surface reinforced resin layer DT door trim for automobile CL air bubble

Claims (3)

  1. 　樹脂板素材を加熱した状態で所要形状に成形してなる自動車用内装部品であって、
    　前記樹脂板素材は、
    　樹脂の発泡によって生じた多数の気泡を含む発泡樹脂シート材層と、
    　前記発泡樹脂シート材層上に設けられた表面補強樹脂層と、によって構成され、
    　前記表面補強樹脂層を構成する樹脂は、前記発泡樹脂シート材層を構成する樹脂とは別の発泡していない樹脂であること、および、前記表面補強樹脂層の厚み寸法は、前記多数の気泡の平均粒径より大きい寸法であること
    　を特徴とする自動車用内装部品。     It is an interior part for an automobile formed by molding a resin plate material into a required shape in a heated state,
    The resin plate material is
    A foamed resin sheet material layer containing a large number of cells generated by the foaming of a resin,
    And a surface reinforcing resin layer provided on the foamed resin sheet material layer,
    The resin constituting the surface reinforcing resin layer is an unfoamed resin different from the resin constituting the foamed resin sheet material layer, and the thickness dimension of the surface reinforcing resin layer is the large number of cells. An automobile interior part characterized by having a size larger than the average particle size of
  2. 　前記表面補強樹脂層は、前記発泡樹脂シート材層の片面に設けられていること
    　を特徴とする請求項１に記載の自動車用内装部品。     The automobile interior part according to claim 1, wherein the surface reinforcing resin layer is provided on one side of the foamed resin sheet material layer.
  3. 　前記表面補強樹脂層は、前記発泡樹脂シート材層の両面に設けられていること
    　を特徴とする請求項１に記載の自動車用内装部品。     The automobile interior part according to claim 1, wherein the surface reinforcing resin layer is provided on both sides of the foamed resin sheet material layer.
PCT/JP2017/034658 2017-09-26 2017-09-26 Automobile interior part WO2019064327A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2017/034658 WO2019064327A1 (en) 2017-09-26 2017-09-26 Automobile interior part

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2017/034658 WO2019064327A1 (en) 2017-09-26 2017-09-26 Automobile interior part

Publications (1)

Publication Number Publication Date
WO2019064327A1 true WO2019064327A1 (en) 2019-04-04

Family

ID=65901042

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2017/034658 WO2019064327A1 (en) 2017-09-26 2017-09-26 Automobile interior part

Country Status (1)

Country Link
WO (1) WO2019064327A1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0585169A (en) * 1991-09-27 1993-04-06 Shigeru Kogyo Kk Automobile door trim and manufacture thereof
JPH10193519A (en) * 1997-01-10 1998-07-28 Kanegafuchi Chem Ind Co Ltd Foamed laminate sheet for interior material of automobile and molded body for interior material of automobile

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0585169A (en) * 1991-09-27 1993-04-06 Shigeru Kogyo Kk Automobile door trim and manufacture thereof
JPH10193519A (en) * 1997-01-10 1998-07-28 Kanegafuchi Chem Ind Co Ltd Foamed laminate sheet for interior material of automobile and molded body for interior material of automobile

Similar Documents

Publication Publication Date Title
JP5532522B2 (en) Sandwich panel, sandwich panel core molding method, and sandwich panel molding method
JP6003009B2 (en) Resin sandwich panel and method for manufacturing resin sandwich panel
EP1391284A1 (en) Laminated structure and method for manufacturing the same
JP2015104887A (en) Resin sandwich panel, and method for manufacturing the same
US20050017404A1 (en) Method of molding a vehicle trim component
JP4737530B2 (en) Manufacturing method for interior parts for automobiles
KR101289673B1 (en) Method for manufactureing crash pad of vehicle using Polyurethane spray skin forming
WO2019064327A1 (en) Automobile interior part
JP4697868B2 (en) Automotive interior parts
JPH0857982A (en) Production of interior material for car
JP3963264B2 (en) Interior parts for automobiles and manufacturing method thereof
KR20140102417A (en) Method for manufacturing seatback cover using headliner of sunroof opening scrap
JP3976138B2 (en) Manufacturing method for interior parts for automobiles
JP2005138797A (en) Interior trim component for automobile
JP4208236B2 (en) Automotive interior parts
JP2004230917A (en) Interior parts for automobile
JP2008024173A (en) Interior trim part for automobile and its manufacturing method
KR20040042678A (en) skin of crash pad for automo bile and method for molding that
JP3963267B2 (en) Automotive interior parts
JP2007301889A (en) Interior part for automobile and its manufacturing method
JP2010149410A (en) Production process of automobile interior component and molding die used for the process
JP5483282B2 (en) Vehicle parts mounting structure
JP2009083411A (en) Interior component for automobile and its manufacturing method
JP3119348B2 (en) Automotive interior parts
JP2006231881A (en) Interior component for automobile and its manufacturing method

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17927500

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 17927500

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: JP