JP2983136B2 - Laminated molded article and method for molding the same - Google Patents
Laminated molded article and method for molding the sameInfo
- Publication number
- JP2983136B2 JP2983136B2 JP1757794A JP1757794A JP2983136B2 JP 2983136 B2 JP2983136 B2 JP 2983136B2 JP 1757794 A JP1757794 A JP 1757794A JP 1757794 A JP1757794 A JP 1757794A JP 2983136 B2 JP2983136 B2 JP 2983136B2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- resin
- core material
- press molding
- resin core
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
Links
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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14836—Preventing damage of inserts during injection, e.g. collapse of hollow inserts, breakage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
- B29L2031/3005—Body finishings
- B29L2031/3041—Trim panels
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
- Laminated Bodies (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Description
【0001】[0001]
【産業上の利用分野】この発明は、自動車用ドアトリム
等の積層成形体ならびにその成形方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminated molded product such as an automobile door trim and a method for molding the same.
【0002】[0002]
【従来の技術】従来、自動車の車体パネルに内装される
自動車用ドアトリム,リヤコーナートリム等の自動車用
内装部品の構成について、図6に示す自動車用ドアトリ
ムを例示して説明すると、自動車用ドアトリム1は、所
望の曲面形状を備えるように成形された樹脂芯材2と、
この樹脂芯材2の表面側に積層一体化され、良好なクッ
ション性ならびに装飾性を備える表皮材3との積層成形
体から構成されている。2. Description of the Related Art Conventionally, the structure of an automobile interior trim such as an automobile door trim and a rear corner trim which is installed in an automobile body panel will be described with reference to an automobile door trim shown in FIG. Is a resin core material 2 molded to have a desired curved shape,
The resin core material 2 is laminated and integrated on the surface side, and is composed of a laminated molded body with a skin material 3 having good cushioning properties and decorative properties.
【0003】そして、樹脂芯材2の成形方法としては、
近時、造形上複雑な立体形状が要求されることから、成
形性の優れたモールドプレス成形工法が多用される傾向
にある。[0003] As a method of molding the resin core material 2,
In recent years, since a complicated three-dimensional shape is required in molding, a mold press molding method excellent in moldability tends to be frequently used.
【0004】この場合、工程を短縮化する意味合いか
ら、樹脂芯材2のモールドプレス成形時に、表皮材3を
樹脂芯材2の表面側に一体化している。In this case, the skin material 3 is integrated with the surface of the resin core material 2 at the time of mold press molding of the resin core material 2 in order to shorten the process.
【0005】すなわち、図7に示すように、まず、モー
ルドプレス成形用上型4のセットピン4aに表皮材3を
予めセットしておき、モールドプレス成形用下型5に対
してモールドプレス成形用上型4を下降させて、上下型
4,5が所定クリアランスに到達したとき、図8に示す
ように、モールドプレス成形用下型5の型面上に、ホッ
トランナ5a,ゲート5bを通じて、ゲート孔5cから
樹脂芯材2の素材である溶融樹脂6を分配供給する。[0005] That is, as shown in FIG. 7, first, the skin material 3 is set in advance on the set pins 4 a of the upper mold 4 for mold press molding. When the upper mold 4 is lowered and the upper and lower molds 4 and 5 reach a predetermined clearance, as shown in FIG. 8, the gate is placed on the mold surface of the mold press molding lower mold 5 through the hot runner 5a and the gate 5b. The molten resin 6 as the material of the resin core material 2 is distributed and supplied from the hole 5c.
【0006】その後、上型4がさらに下降して、図9に
示すように、上下型4,5を係合圧締めすることによ
り、所要形状に樹脂芯材2を成形するとともに、この樹
脂芯材2の表面側に表皮材3を一体化して、図6に示す
自動車用ドアトリム1を製品形状に成形する。Thereafter, the upper mold 4 is further lowered, and as shown in FIG. 9, the upper and lower molds 4, 5 are engaged and pressed to form the resin core material 2 into a required shape. The skin material 3 is integrated with the surface side of the material 2, and the automobile door trim 1 shown in FIG. 6 is formed into a product shape.
【0007】[0007]
【発明が解決しようとする課題】しかしながら、このよ
うに樹脂芯材2と表皮材3とをモールドプレス成形によ
り一体プレス成形して積層成形品を成形する従来工法で
は、樹脂芯材2の素材である溶融樹脂6の樹脂熱によ
り、表皮材3が損傷を受け、製品外観性能を損うという
問題点が指摘されている。However, in the conventional method in which the resin core material 2 and the skin material 3 are integrally press-formed by mold press molding to form a laminated molded product, the material of the resin core material 2 is used. It has been pointed out that the skin material 3 is damaged by the resin heat of a certain molten resin 6 and the external appearance performance of the product is impaired.
【0008】この対策として種々のものが提案されてい
るが、まず第1の対策としては、溶融樹脂6の樹脂温度
を下げることにより、樹脂熱の悪影響を排除するという
ものであるが、樹脂温度を低く下げた場合、溶融樹脂の
流動性が低下するため、ショートショットが発生すると
いう不具合がある。Various countermeasures have been proposed as a countermeasure. The first countermeasure is to reduce the resin temperature of the molten resin 6 so as to eliminate the adverse effect of resin heat. When the temperature is lowered, the fluidity of the molten resin is reduced, and there is a problem that a short shot occurs.
【0009】また、表皮材3と溶融樹脂6との接触時間
を短くするために、溶融樹脂6を下型5の型面上に供給
する際、上下型4,5のクリアランスを大きく設定する
方法もあるが、この場合も前述したのと同様に、モール
ドプレス成形時に溶融樹脂の冷却が早まり、ショートシ
ョットを招く不具合がある。Further, in order to shorten the contact time between the skin material 3 and the molten resin 6, when supplying the molten resin 6 onto the mold surface of the lower mold 5, the clearance between the upper and lower molds 4, 5 is set to be large. However, also in this case, similarly to the above, there is a problem that the cooling of the molten resin is accelerated at the time of mold press molding, which causes a short shot.
【0010】このほかに、表皮材3として発泡倍率の小
さいもの、あるいは板厚の厚いものを使用すれば、溶融
樹脂6の樹脂熱の悪影響を排除できることが考えられる
が、そうした場合、重量化を招くとともにコストもアッ
プし、良好なソフト感が得られないという不具合があ
る。In addition, it is conceivable that the use of a material having a small foaming ratio or a material having a large thickness as the skin material 3 can eliminate the adverse effect of the heat of the molten resin 6. In addition to this, there is a problem that the cost is increased and a good soft feeling cannot be obtained.
【0011】そこで、発明者らは、図10に示すよう
に、下型5に開設された3箇所のゲート孔5cから溶融
樹脂6を分配供給して、下型5各部位の温度測定を実施
した。Then, as shown in FIG. 10, the present inventors distribute and supply the molten resin 6 from three gate holes 5c opened in the lower mold 5, and measure the temperature of each part of the lower mold 5. did.
【0012】例えば、供給されたときのゲート孔5c付
近における溶融樹脂6の樹脂温度を190℃に設定した
場合、下型5の型面上を溶融樹脂6が流動し、ゲート孔
5cと500mm離れたA地点に到達したときには14
0℃に溶融樹脂6の樹脂温度が低下することから、溶融
樹脂6の樹脂熱の影響は、ゲート孔5c付近のみ対処す
れば充分なことを知見した。For example, when the resin temperature of the molten resin 6 near the gate hole 5c when supplied is set to 190 ° C., the molten resin 6 flows on the mold surface of the lower mold 5 and is separated from the gate hole 5c by 500 mm. 14 when you reach point A
Since the resin temperature of the molten resin 6 decreases to 0 ° C., it has been found that the influence of the resin heat of the molten resin 6 is sufficient if only the vicinity of the gate hole 5c is dealt with.
【0013】この発明は、このような事情に鑑みてなさ
れたもので、モールドプレス成形工法により、樹脂芯材
と表皮材とを一体化した積層成形体ならびにその成形方
法において、ショートショット等の成形不良を招くこと
なく、モールドプレス成形時における表皮材の保護が図
れ、かつ表皮材として発泡倍率の高い、板厚の薄いクッ
ション性能の良好な表皮材の使用を可能にした積層成形
体ならびにその成形方法を提供することを目的としてい
る。SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and in a laminated molded body in which a resin core material and a skin material are integrated by a mold press molding method, and in a molding method therefor, a molded article such as a short shot is formed. A laminated molded article that protects a skin material during mold press molding without causing defects, and enables the use of a skin material having a high foaming ratio, a thin plate thickness, and a good cushioning performance as a skin material, and molding thereof. It is intended to provide a way.
【0014】[0014]
【課題を解決するための手段】上記目的を達成するため
に、本発明は、溶融樹脂を所要形状にモールドプレス成
形してなる樹脂芯材と、この樹脂芯材のモールドプレス
成形時、樹脂芯材と表皮材とを一体化してなる積層成形
体において、前記樹脂芯材と表皮材との間で溶融樹脂の
注入部に通気性を有する高融点の布地シートからなるバ
リヤシートが介挿されていることを特徴とする。SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a resin core obtained by mold-pressing a molten resin into a desired shape, and a resin core formed by molding and pressing the resin core. In a laminated molded body obtained by integrating a material and a skin material, the molten resin is formed between the resin core material and the skin material .
A barrier sheet made of a high-melting cloth sheet having air permeability is inserted in the injection portion .
【0015】さらに、本発明は、モールドプレス成形用
型内で溶融樹脂を所要形状に成形してなる樹脂芯材と、
この樹脂芯材のモールドプレス成形時、樹脂芯材と一体
化される表皮材とから構成される積層成形体の成形方法
において、前記モールドプレス成形用上型の型面に表皮
材をセットするとともに、モールドプレス成形用下型の
ゲート孔を覆うように、耐熱ならびに断熱性を備え、通
気性を有するバリヤシートを載置する素材のセット工程
と、ゲートのゲート孔を通じて下型の型面上に溶融樹脂
を分配供給した後、上下型の係合圧締めにより、樹脂芯
材を所要形状に成形するとともに、樹脂芯材と表皮材と
の間に部分的にバリヤシートを介して両者を一体化する
モールドプレス成形工程と、からなることを特徴とす
る。Further, the present invention provides a resin core obtained by molding a molten resin into a required shape in a mold press mold,
In this method of molding a resin core material, in a method of molding a laminated molded article composed of a resin material and a skin material integrated with the resin core material, the method comprises setting a skin material on a mold surface of the upper mold for mold press molding. A step of setting a material for placing a barrier sheet having heat resistance and heat insulation and air permeability so as to cover the gate hole of the lower mold for mold press molding, and onto the lower mold surface through the gate hole of the gate. After distributing and supplying the molten resin, the upper and lower molds are pressed together to form the resin core into the required shape, and the resin core and the skin are partially integrated via a barrier sheet. And a mold press forming step.
【0016】さらに、上記バリヤシートの条件として
は、溶融樹脂の樹脂熱、例えば、ポリプロピレン樹脂の
場合160〜200℃に対して、ABS樹脂の場合24
0〜300℃に対して、溶融しないことが必要である。Further, the conditions of the barrier sheet include resin heat of the molten resin, for example, 160 to 200 ° C. for polypropylene resin, and 24 to 240 ° C. for ABS resin.
It is necessary not to melt at 0 to 300 ° C.
【0017】また、モールドプレス成形時には表皮材と
樹脂芯材とを接合させることが必要であることから、プ
レス圧により溶融樹脂がバリヤシート内を浸透し、表皮
材との接合を図る上で、通気性が必要である。Further, since it is necessary to join the skin material and the resin core material during mold press molding, the molten resin penetrates into the barrier sheet by the pressing pressure, and in order to join the skin material, Ventilation is required.
【0018】このバリヤシートとしては、高融点繊維か
らなる不織布やメリヤス布,あるいはフェルトやガラス
繊維マット等を使用してよく、ポリエステル,ポリアミ
ドの混紡不織布の場合その目付け量は30〜100g/
m 2、ポリエステルとポリアミドとの繊維からなるメリ
ヤス布の場合その目付け量は50〜120g/m 2、フ
ェルトの場合その目付け量は50〜150g/m 2、ガ
ラス繊維マットの場合その目付け量は100〜200g
/m 2が好ましい。As the barrier sheet, a non-woven fabric or a knitted fabric made of a high-melting fiber, a felt or a glass fiber mat, or the like may be used. In the case of a blended non-woven fabric of polyester and polyamide, the basis weight is 30 to 100 g / g.
m 2 , in the case of a knitted fabric made of polyester and polyamide fibers, the basis weight is 50 to 120 g / m 2 , in the case of felt, the basis weight is 50 to 150 g / m 2 , and in the case of a glass fiber mat, the basis weight is 100. ~ 200g
/ M 2 is preferred.
【0019】目付け量が下限値未満であると所望の断熱
効果が得られず、表皮材に損傷を受けるとともに、上限
値を越えた場合には、樹脂の浸透性が悪く、表皮材と樹
脂芯材との良好な接合が得られない。If the basis weight is less than the lower limit, the desired heat insulating effect cannot be obtained, and the skin material is damaged. If the basis weight exceeds the upper limit, the permeability of the resin is poor, and the skin material and the resin core are poor. Good bonding with the material cannot be obtained.
【0020】[0020]
【作用】以上の構成から明らかなように、上型のゲート
孔を覆うように通気性を有する高融点の布地シートから
なるバリヤシートを設置しておけば、モールドプレス成
形時、ゲート孔を通じて高温の溶融樹脂が注入されて
も、このバリヤシートにより溶融樹脂の樹脂熱が表皮材
に直接伝わることがないため、表皮材の損傷を受けやす
いゲート付近で表皮材を保護することができ、表皮材の
外観品質を良好に維持できる。As is apparent from the above constitution , a high-melting cloth sheet having air permeability so as to cover the upper gate hole is used.
Made if the barrier sheet is placed, during press-molding, for high-temperature molten resin through the gate holes be injected, the resin heat of the molten resin by the barrier sheet not transmitted directly to the skin material, the skin material The skin material can be protected in the vicinity of the gate which is easily damaged, and good appearance quality of the skin material can be maintained.
【0021】さらに、このバリヤシートは通気性を有し
ているため、モールドプレス圧により樹脂が表皮材裏面
側に浸透し、表皮材と樹脂芯材との接合に何等支障はな
い。Further, since the barrier sheet has air permeability, the resin permeates into the back surface of the skin material by the mold press pressure, and there is no problem in joining the skin material and the resin core material.
【0022】[0022]
【実施例】以下、本発明による積層成形体ならびにその
成形方法について、添付図面を参照しながら詳細に説明
する。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view showing a laminated molded article according to the present invention;
【0023】図1は本発明に係る積層成形体を適用した
自動車用ドアトリムを示す正面図、図2は同自動車用ド
アトリムの構成を示す断面図、図3ないし図5は本発明
方法による積層成形体の成形方法の各工程を示す断面図
である。FIG. 1 is a front view showing a door trim for an automobile to which the laminated molding according to the present invention is applied, FIG. 2 is a sectional view showing the structure of the door trim for the automobile, and FIGS. 3 to 5 are laminated moldings by the method of the present invention. It is sectional drawing which shows each process of the shaping | molding method of a body.
【0024】まず、図1,図2において、本発明に係る
自動車用ドアトリム10は、所要形状に成形された樹脂
芯材11と、この樹脂芯材11の表面側に積層一体化さ
れた表皮材12と、両者間に部分的に介挿されるバリヤ
シート13とから構成されている。First, referring to FIGS. 1 and 2, an automobile door trim 10 according to the present invention comprises a resin core material 11 formed in a required shape, and a skin material laminated and integrated on the surface side of the resin core material 11. 12 and a barrier sheet 13 partially interposed between them.
【0025】さらに詳しくは、上記樹脂芯材11は、タ
ルクを混入したポリプロピレン樹脂を使用し、所望の曲
面形状を備えたモールドプレス成形用型内に溶融状態で
分配供給したのち、モールドプレス成形により複雑な曲
面形状に成形されている。More specifically, the resin core material 11 is made of polypropylene resin mixed with talc, distributed and supplied in a molten state into a mold press molding die having a desired curved surface shape, and then subjected to mold press molding. It is formed into a complicated curved shape.
【0026】そして、表皮材12としては、用途により
各種仕様のものが用いられてよいが、塩ビシート裏面に
ポリオレフィン樹脂発泡体を裏打ちした積層シートが適
しており、例えば、ポリプロピレンフォーム,ポリプロ
ピレンとポリエチレンとのブレンド発泡体が好ましい。
本実施例では、ポリプロピレンとポリエチレンとのブレ
ンド品で、発泡倍率を20倍に調整したクッション性の
良好なものが使用されている。The skin material 12 may be of various specifications depending on the intended use, but a laminated sheet having a polyolefin resin foam lined on the back surface of a PVC sheet is suitable. For example, polypropylene foam, polypropylene and polyethylene Preferred is a blended foam with
In the present embodiment, a blend of polypropylene and polyethylene having a good cushioning property with an expansion ratio adjusted to 20 times is used.
【0027】なお、従来ではPVCシート裏面にポリプ
ロピレンフォームを裏打ちした表皮材を使用した場合、
樹脂熱の悪影響により発泡倍率は15倍に限定を受け、
クッション性能について問題があった。Conventionally, when a skin material in which a polypropylene foam is lined on the back of a PVC sheet is used,
The expansion ratio is limited to 15 times due to the adverse effect of resin heat,
There was a problem with cushioning performance.
【0028】また、表皮材12として、塩ビ発泡シート
を使用した場合、2〜2.5倍発泡(非架橋タイプ)を
5倍発泡に、3〜5倍発泡(架橋タイプ)を8〜10倍
発泡に、それぞれ表皮材12における発泡倍率を高め、
クッション性能の良好な自動車用ドアトリム10を提供
できる。Further, when a PVC foam sheet is used as the skin material 12, 2- to 2.5-fold foaming (non-crosslinked type) is expanded to 5 times, and 3 to 5 times expanded (crosslinked type) to 8 to 10 times. For foaming, increase the foaming ratio in the skin material 12 respectively,
An automobile door trim 10 having good cushion performance can be provided.
【0029】このように表皮材12として、クッション
性の良好な素材を使用できる理由としては、樹脂芯材1
1と表皮材12との間に部分的にバリヤシート13を介
挿したからである。The reason why a material having good cushioning properties can be used as the skin material 12 is as follows.
This is because the barrier sheet 13 is partially inserted between the cover material 1 and the skin material 12.
【0030】上記バリヤシート13の素材としては、本
実施例ではポリエステル,ポリアミド混紡不織布、目付
け量30〜100g/m 2のものを使用しているが、ポ
リエステル,ポリアミドからなるメリヤス布で目付け量
50〜120g/m 2のものを使用してもよく、また、
目付け量50〜150g/m 2のフェルトや、目付け量
100〜200g/m 2のガラス繊維マットを使用して
もよく、樹脂芯材11の素材である溶融樹脂に対して、
容易に溶融しない高融点繊維を使用するとともに、モー
ルドプレス成形時、溶融樹脂が浸透して、表皮材12と
の接合を行なうため、通気性を備えていればよい。As a material of the barrier sheet 13, in this embodiment, a polyester / polyamide blended nonwoven fabric having a basis weight of 30 to 100 g / m 2 is used. ~ 120 g / m 2 may be used,
Felt and basis weight 50 to 150 g / m 2, may be used glass fiber mat having a basis weight 100 to 200 g / m 2, the molten resin which is a material of the resin core member 11,
In addition to using a high melting point fiber that does not easily melt, it is only necessary to have air permeability so that the molten resin penetrates and joins with the skin material 12 during mold press molding.
【0031】さらに、このバリヤシート13の形状は、
矩形状,円形状等、特に限定するものではなく、その寸
法は、後述するモールドプレス成形時、下型上に供給さ
れるブロック状の溶融樹脂材料を覆う外形寸法を備えて
いれば良く、本実施例では、150×150mmの矩形
状シート材料を使用している。Further, the shape of the barrier sheet 13 is as follows:
The dimensions are not particularly limited, such as a rectangular shape and a circular shape, and the dimensions may be any dimensions provided that they have an outer dimension that covers the block-shaped molten resin material supplied onto the lower mold at the time of mold press molding described later. In the embodiment, a rectangular sheet material of 150 × 150 mm is used.
【0032】このバリヤシート13は、樹脂芯材11の
モールドプレス成形時、溶融樹脂の樹脂熱により表皮材
に悪影響を与えやすい箇所にのみ部分的に設定されてい
る。The barrier sheet 13 is partially set only in a portion where the skin material is likely to be adversely affected by the resin heat of the molten resin when the resin core material 11 is subjected to mold press molding.
【0033】次いで、図3ないし図5を基に、本発明に
係る積層成形体としての自動車用ドアトリム10の成形
工程について説明する。Next, with reference to FIGS. 3 to 5, a process of forming the door trim 10 for an automobile as a laminated body according to the present invention will be described.
【0034】まず、本発明方法実施するには、図3に示
すモールドプレス成形用金型が使用される。このモール
ドプレス成形用金型は、モールドプレス成形用下型20
と、下型20の上方に位置するモールドプレス成形用上
型30とから構成されるとともに、下型20には、図示
しない射出成形機から樹脂芯材11の素材である溶融樹
脂を供給するために、ホットランナ21が開設されてい
るとともに、このホットランナ21を通じて3箇所にゲ
ート22が開設されており、ゲート22のゲート孔22
aから下型20の型面上に溶融樹脂Mが分配供給され
る。First, to carry out the method of the present invention, a mold press molding die shown in FIG. 3 is used. This mold press molding die is a mold press molding lower die 20.
And an upper mold 30 for mold press molding located above the lower mold 20. The lower mold 20 is supplied with a molten resin as a material of the resin core material 11 from an injection molding machine (not shown). In addition, a hot runner 21 is opened, and gates 22 are opened at three places through the hot runner 21.
The molten resin M is distributed and supplied from above a onto the mold surface of the lower mold 20.
【0035】一方、下型20の上方に位置する上型30
は、昇降用シリンダ31により所定ストローク上下動可
能に構成されているとともに、その型面の周縁に沿っ
て、表皮材12を位置決めセットするセットピン32が
設けられている。On the other hand, the upper die 30 located above the lower die 20
Is configured to be able to move up and down by a predetermined stroke by a lifting cylinder 31, and is provided with a set pin 32 for positioning and setting the skin material 12 along the periphery of the mold surface.
【0036】したがって、まず、上型30のセットピン
32に表皮材12をセットするとともに、下型20に穿
設されているゲート孔22aを隠すようにバリヤシート
13を載置する。Accordingly, first, the skin material 12 is set on the set pins 32 of the upper die 30 and the barrier sheet 13 is placed so as to hide the gate holes 22a formed in the lower die 20.
【0037】その後、上型30が駆動用シリンダ31の
動作により所定ストローク下降して、上下型20,30
が所定クリアランスに到達したとき、図4に示すよう
に、図示しない射出成形機からホットランナ21,ゲー
ト22を通じて、ゲート孔22aから溶融樹脂Mが下型
20の型面上に分配供給される。Thereafter, the upper die 30 is lowered by a predetermined stroke by the operation of the driving cylinder 31, and the upper and lower dies 20, 30 are moved downward.
When a predetermined clearance is reached, as shown in FIG. 4, molten resin M is distributed and supplied from the injection molding machine (not shown) through the hot runner 21 and the gate 22 to the mold surface of the lower mold 20 through the gate hole 22a.
【0038】その後、図5に示すように、上型30が最
大下降点にまで下降して、上下型20,30により所定
時間係合圧締めがなされ、溶融樹脂Mを上下型20,3
0のキャビティに沿って行きわたらせ、所望の曲面形状
に樹脂芯材11を成形するとともに、この樹脂芯材11
の表面側に表皮材12をプレス一体化して、図1,図2
に示す自動車用ドアトリム10が成形される。Thereafter, as shown in FIG. 5, the upper mold 30 is lowered to the maximum descending point, and the upper and lower dies 20, 30 are engaged and pressed for a predetermined time, and the molten resin M is transferred to the upper and lower dies 20, 3, as shown in FIG.
0, and the resin core material 11 is formed into a desired curved shape.
The surface material 12 is press-integrated on the surface side of FIG.
The automotive door trim 10 shown in FIG.
【0039】このとき、ゲート孔22aを通じて下型2
0に供給される溶融樹脂Mは、ゲート22付近で高温で
あり、下型20の周縁部に行きわたるにつれ、温度が低
下する傾向を示すことは上述したが、ゲート孔22aの
付近の高温部分については、バリヤシート13により表
皮材12の裏面を保護しているため、溶融樹脂Mの樹脂
熱により表皮材12は悪影響を受けることがなく、表皮
材12の外観性能を良好に維持できる。At this time, the lower mold 2 is passed through the gate hole 22a.
As described above, the temperature of the molten resin M supplied to the gate hole 22 is high near the gate 22 and the temperature tends to decrease as it reaches the periphery of the lower mold 20. With regard to the above, since the back surface of the skin material 12 is protected by the barrier sheet 13, the skin material 12 is not adversely affected by the resin heat of the molten resin M, and the appearance performance of the skin material 12 can be favorably maintained.
【0040】そして、バリヤシート13は通気性を備え
ているため、このバリヤシート13を通じて溶融樹脂M
がしみ出し、表皮材12との良好な接合状態が確保でき
る。Since the barrier sheet 13 has air permeability, the molten resin M
Exudation can be ensured, and a favorable joint state with the skin material 12 can be ensured.
【0041】このように本発明方法によれば、下型20
のゲート孔22aを覆うように、バリヤシート13を載
置するだけで、従来工法と同じ成形方法を用いて、成形
不良のない精度の高い成形が可能になるとともに、使用
する表皮材12についても、発泡倍率が高く、かつ板厚
の薄いものを使用できるため、廉価でクッション性能の
良好な表皮材12の使用が可能となる。As described above, according to the method of the present invention, the lower mold 20
By simply placing the barrier sheet 13 so as to cover the gate hole 22a, the same molding method as that of the conventional method can be used to perform molding with high precision without molding defects. Since a foaming ratio is high and a thin plate can be used, it is possible to use the skin material 12 which is inexpensive and has good cushioning performance.
【0042】[0042]
【発明の効果】以上説明した通り、本発明は、以下に記
載する格別の作用効果を有する。As described above, the present invention has the following special functions and effects.
【0043】(1)本発明によれば、モールドプレス成
形用下型のゲート孔を覆うようにバリヤシートを載置し
てモールドプレス成形を行なえば、溶融樹脂における樹
脂熱の悪影響を排除でき、表皮材を確実に保護でき、従
来生じていたゲート付近の表皮材の成形不良を可及的に
防止でき、積層成形体の外観性能を著しく向上させるこ
とができるという効果を有する。(1) According to the present invention, if the barrier sheet is placed so as to cover the gate hole of the lower mold for mold press molding and the mold press molding is performed, the adverse effect of resin heat on the molten resin can be eliminated. This has the effect that the skin material can be reliably protected, molding defects of the skin material near the gate, which have conventionally occurred, can be prevented as much as possible, and the appearance performance of the laminated molded article can be significantly improved.
【0044】(2)本発明方法によれば、バリヤシート
により溶融樹脂の樹脂熱の悪影響を排除するというもの
であるから、表皮材の仕様として、発泡倍率が高く、か
つ厚みの薄いものが使用できるため、溶融樹脂材料の節
約とともに、成形体の軽量化,コストダウンならびに良
好な感触が得られるなどの種々の効果を有する。(2) According to the method of the present invention, the barrier sheet eliminates the adverse effect of the resin heat of the molten resin. Therefore, as the skin material, a material having a high expansion ratio and a small thickness is used. Therefore, it has various effects such as saving of the molten resin material, weight reduction of the molded body, cost reduction, and good feel.
【図1】本発明を適用した自動車用ドアトリムを示す正
面図。FIG. 1 is a front view showing an automobile door trim to which the present invention is applied.
【図2】図1中II−II線断面図。FIG. 2 is a sectional view taken along line II-II in FIG.
【図3】本発明方法における素材のセット工程を示す断
面図。FIG. 3 is a cross-sectional view showing a material setting step in the method of the present invention.
【図4】本発明方法における溶融樹脂の供給工程を示す
断面図。FIG. 4 is a sectional view showing a step of supplying a molten resin in the method of the present invention.
【図5】本発明方法におけるモールドプレス成形工程を
示す断面図。FIG. 5 is a sectional view showing a mold press molding step in the method of the present invention.
【図6】従来の自動車用ドアトリムの構成を示す断面
図。FIG. 6 is a sectional view showing a configuration of a conventional automobile door trim.
【図7】従来のモールドプレス成形方法における表皮材
のセット工程を示す断面図。FIG. 7 is a cross-sectional view showing a step of setting a skin material in a conventional mold press molding method.
【図8】従来のモールドプレス成形工法における溶融樹
脂の供給工程を示す断面図。FIG. 8 is a cross-sectional view showing a molten resin supply step in a conventional mold press molding method.
【図9】従来のモールドプレス成形工法におけるモール
ドプレス成形工程を示す断面図。FIG. 9 is a sectional view showing a mold press molding step in a conventional mold press molding method.
【図10】モールドプレス成形用下型に分配供給される
溶融樹脂の樹脂温度分布を示す説明図。FIG. 10 is an explanatory view showing a resin temperature distribution of a molten resin distributed and supplied to a lower mold for mold press molding.
10 自動車用ドアトリム 11 樹脂芯材 12 表皮材 13 成形装置 20 モールドプレス成形用下型 22 ゲート 22a ゲート孔 30 モールドプレス成形用上型 31 昇降用シリンダ 32 セットピン M 溶融樹脂 DESCRIPTION OF SYMBOLS 10 Automobile door trim 11 Resin core material 12 Skin material 13 Molding apparatus 20 Lower mold for mold press molding 22 Gate 22a Gate hole 30 Upper mold for mold press molding 31 Cylinder for raising and lowering 32 Set pin M Molten resin
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 FI B29L 31:58 (58)調査した分野(Int.Cl.6,DB名) B29C 43/18 B29C 45/14 B29C 45/56 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 6 identification code FI B29L 31:58 (58) Investigated field (Int.Cl. 6 , DB name) B29C 43/18 B29C 45/14 B29C 45/56
Claims (2)
レス成形してなる樹脂芯材(11)と、この樹脂芯材
(11)のモールドプレス成形時、樹脂芯材(11)と
表皮材(12)とを一体化してなる積層成形体におい
て、 前記樹脂芯材(11)と表皮材(12)との間で溶融樹
脂(M)の注入部に通気性を有する高融点の布地シート
からなるバリヤシート(13)が介挿されていることを
特徴とする積層成形体。1. A resin core material (11) obtained by mold-pressing a molten resin (M) into a required shape, and a resin core material (11) and a skin material at the time of mold-press molding of the resin core material (11). (12) in a laminated molded body, wherein a molten resin is formed between the resin core material (11) and the skin material (12).
High melting point fabric sheet having air permeability in the injection part of fat (M)
Molded laminate, characterized in that the barrier sheet (13) is inserted consisting of.
内で溶融樹脂(M)を所要形状に成形してなる樹脂芯材
(11)と、この樹脂芯材(11)のモールドプレス成
形時、樹脂芯材(11)と一体化される表皮材(12)
とから構成される積層成形体の成形方法において、 前記モールドプレス成形用上型(30)の型面に表皮材
(12)をセットするとともに、モールドプレス成形用
下型(20)のゲート孔(22a)を覆うように、耐熱
ならびに断熱性を備え、通気性を有するバリヤシート
(13)を載置する素材のセット工程と、 ゲート(22)のゲート孔(22a)を通じて下型(2
0)の型面上に溶融樹脂(M)を分配供給した後、上下
型(20,30)の係合圧締めにより、樹脂芯材(1
1)を所要形状に成形するとともに、樹脂芯材(11)
と表皮材(12)との間に部分的にバリヤシート(1
3)を介して両者を一体化するモールドプレス成形工程
と、 からなることを特徴とする積層成形体の成形方法。2. A mold for mold press molding (20, 30).
A resin core material (11) formed by molding the molten resin (M) into a required shape in the inside thereof, and a skin material integrated with the resin core material (11) during mold press molding of the resin core material (11). 12)
In the method for forming a laminated molded body, a skin material (12) is set on a surface of the upper mold (30) for mold press molding, and a gate hole (20) of the lower mold (20) for mold press molding is formed. A step of setting a material on which a barrier sheet (13) having heat resistance and heat insulation and having air permeability is placed so as to cover the lower mold (2) through the gate hole (22a) of the gate (22);
After the molten resin (M) is distributed and supplied onto the mold surface of (0), the upper and lower molds (20, 30) are engaged and pressed to form the resin core material (1).
1) into a required shape and resin core material (11)
And a barrier sheet (1)
(3) a mold press molding step of integrating the two via (1) and (2).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1757794A JP2983136B2 (en) | 1994-02-14 | 1994-02-14 | Laminated molded article and method for molding the same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1757794A JP2983136B2 (en) | 1994-02-14 | 1994-02-14 | Laminated molded article and method for molding the same |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH07223237A JPH07223237A (en) | 1995-08-22 |
JP2983136B2 true JP2983136B2 (en) | 1999-11-29 |
Family
ID=11947771
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1757794A Expired - Fee Related JP2983136B2 (en) | 1994-02-14 | 1994-02-14 | Laminated molded article and method for molding the same |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2983136B2 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19927346A1 (en) * | 1999-06-16 | 2000-12-21 | Targor Gmbh | Process for producing a three-dimensional molded part |
US6835266B2 (en) * | 2001-08-02 | 2004-12-28 | Lear Corporation | Shuttle system for manufacturing vehicle headliners |
JP3895977B2 (en) * | 2001-11-30 | 2007-03-22 | テイ・エス テック株式会社 | Method for forming vehicle lining member provided with decorative member and vehicle lining member provided with decorative member |
JP2006159872A (en) * | 2004-12-10 | 2006-06-22 | Kasai Kogyo Co Ltd | Interior component for automobile |
-
1994
- 1994-02-14 JP JP1757794A patent/JP2983136B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH07223237A (en) | 1995-08-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0540024B1 (en) | Multilayer molded article and production thereof | |
US5783133A (en) | Method for making a multilayer molded article | |
JPH03262750A (en) | Interior part for automobile and manufacture thereof | |
US6146564A (en) | Process for the production of plastic molded parts with decorative lamination | |
CN110234486A (en) | For manufacturing decorating the foaming method of carrier body, the film for using in this approach and foaming carrier body being decorated for automobile-use | |
JP4247893B2 (en) | Interior parts for automobiles and manufacturing method thereof | |
JP2983136B2 (en) | Laminated molded article and method for molding the same | |
US6183680B1 (en) | Process for producing multilayer molded article | |
JPH0788019B2 (en) | Manufacturing method of automobile interior parts | |
JP2001062876A (en) | Mold and method for producing thermoplastic resin molded object | |
WO1993001929A1 (en) | Method of manufacturing laminated molding | |
JP2962778B2 (en) | Manufacturing method of deep drawn resin molded body with skin | |
JP2969045B2 (en) | Automotive interior parts and method of manufacturing the same | |
JP4824200B2 (en) | Interior lining component for automobile having decoration member, method for integrally molding the same, and apparatus therefor | |
JP2004025693A (en) | Interior parts for car and production thereof | |
EP1676688A1 (en) | Automotive interior component and manufacturing method thereof | |
JP2962779B2 (en) | Manufacturing method of deep drawn resin molded body with skin | |
JP2973565B2 (en) | Manufacturing method of multilayer molded products | |
JP3198326B2 (en) | Manufacturing method of laminated molded products | |
JP2865238B2 (en) | Manufacturing method for automotive interior parts | |
JP4842453B2 (en) | Interior lining component for automobile having decorative member, method for integrally molding the same, and apparatus therefor | |
JPH11198191A (en) | Multilayer molding die | |
KR920003234B1 (en) | Vehicle mat | |
JP2717336B2 (en) | Multilayer molded product and method for producing the same | |
JP3363719B2 (en) | Manufacturing method of skin-integrated synthetic resin molded product |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19990913 |
|
LAPS | Cancellation because of no payment of annual fees |