JPH01141011A - Preparation of multi-layered molded item - Google Patents
Preparation of multi-layered molded itemInfo
- Publication number
- JPH01141011A JPH01141011A JP62300558A JP30055887A JPH01141011A JP H01141011 A JPH01141011 A JP H01141011A JP 62300558 A JP62300558 A JP 62300558A JP 30055887 A JP30055887 A JP 30055887A JP H01141011 A JPH01141011 A JP H01141011A
- Authority
- JP
- Japan
- Prior art keywords
- skin material
- mold
- female mold
- male
- female
- 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.)
- Granted
Links
- 239000000463 material Substances 0.000 claims abstract description 73
- 229920005989 resin Polymers 0.000 claims abstract description 32
- 239000011347 resin Substances 0.000 claims abstract description 32
- 238000000465 moulding Methods 0.000 claims abstract description 17
- 239000011162 core material Substances 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 238000007493 shaping process Methods 0.000 claims description 6
- -1 polypropylene Polymers 0.000 description 4
- 230000037303 wrinkles Effects 0.000 description 4
- 239000004743 Polypropylene Substances 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
- 229920005992 thermoplastic resin Polymers 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
- 229920003048 styrene butadiene rubber Polymers 0.000 description 2
- 229920002725 thermoplastic elastomer Polymers 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 241000270666 Testudines Species 0.000 description 1
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 229920005676 ethylene-propylene block copolymer Polymers 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000006261 foam material Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000036548 skin texture Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
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
- B29C45/1418—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 the inserts being deformed or preformed, e.g. by the injection pressure
-
- 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
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
- B29C45/56—Means for plasticising or homogenising the moulding material or forcing it into the mould using mould parts movable during or after injection, e.g. injection-compression moulding
- B29C45/561—Injection-compression moulding
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は表皮材と芯材樹脂とからなる多層成形品の製造
方法に関する。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a method for manufacturing a multilayer molded product comprising a skin material and a core resin.
〈従来の技術〉
表皮材と芯材樹脂とからなる多層成形品は、その経済性
、軽量性から、及び賦形性が良好で装飾性、ソフト感等
の表面性状が優れた成形品が得られることから自動車、
家電をはじめあらゆる分野において大量に使用されてい
るうこれら多ｌ−成形品を製造する方法としては、例え
ば特開昭５９−１５０７４０号公報で提案されているよ
うに雌型または雄型に移動自在に取付けられ、かつ雄型
が摺動貫通する摺動口を有する表皮材固定枠により、こ
の表皮材固定枠と雌型との間に表皮材の周縁を挾持した
後、この表皮材と雌型または雄型との間に溶＠樹脂を供
給し、前記雌型と雄型とを型閉めして成形を行なう方法
が提業されている。<Prior art> Multilayer molded products made of a skin material and a core resin are economical and lightweight, and can provide molded products with good formability and excellent surface properties such as decorativeness and soft feel. cars,
As a method for manufacturing these molded products, which are used in large quantities in all fields including home appliances, there is a method for producing molded products that can be freely moved into a female mold or a male mold, as proposed in Japanese Patent Laid-Open No. 59-150740. After the peripheral edge of the skin material is clamped between the skin material fixing frame and the female mold by the skin material fixing frame which is attached to the skin material fixing frame and has a sliding opening through which the male mold slides, the skin material and the female mold are Alternatively, a method has been proposed in which molten resin is supplied between the male mold and the female mold and the male mold are closed to perform molding.
〈発明が解決しようとする問題点〉
しかしながら、従来の方法では相当に複雑な成形品にお
いても表皮材にしわや破れのない多層成形品を製造する
ことはできるが、成形品の形状等によっては芯材の溶融
樹脂の供給時に表皮材に過剰の熱と延伸を与え風合をそ
こなったり、破れを生じさせるという問題があった、本
発明の目的は表皮材と芯材樹脂とからなる風合のすぐれ
た多層成形品の製造方法を提供することであろう
く問題点を解決するための手段〉
本発明者等は風合のすぐれた多１１成形品の製造につい
て鋭意検討を続けてきたうその結果、表皮材と芯材樹脂
とからなる多層成形品の製造に際し、同一成形機内で表
皮材を十分に絞り込み予備賦形を行ない、かつ、金型が
まだ閉鎖していない状態で溶融樹脂を供給することによ
り、表皮材の風合のすぐれた多層成形品を得ることがで
きることを見出し本発明を完成するに至りた。すなわち
、本発明は、次の各工程からなる表皮材の）と芯材樹脂
（１１）とからなる多層成形品（１２）の製造方法であ
ろう
（イ）雄型または雌型に移動自在に取付けられた表皮材
固定枠（４）と雌型（８）との間に表皮材（８）を挾持
する第一工程
（ロ）） 雄型（２）と雌型（８）のキャビティクリヤ
ランスを表皮材の厚さの５倍以下になるまで雄型（２）
および／または雌型（８）を移動させて表皮材（８）を
予備賦形する第二工程
（ハ） 雄型（２）と雌型（８）のキャビティクリヤラ
ンスを第二工程ならびに賦形完了時のキャビティクリヤ
ランスより大きくなるまで雄型（２）および／または雌
型（８）を移動させる第三工程に） 表皮材（８）と雄
型（２）または雌型（８）との間に芯材の溶融樹脂（１
０）を供給する第四工程（ホ）雄型（２）と雌型（８）
を所定のキャビティクリヤランスになるまで型閉めして
成形を行なう第五工程
尚、本明細書にお９）で型閉め時に対向する最外周の側
面が外側面である方を雄型といい、内側函である方を４
型という。<Problems to be Solved by the Invention> However, although it is possible to produce multilayer molded products without wrinkles or tears in the skin material even in fairly complex molded products using conventional methods, depending on the shape of the molded product, etc. There has been a problem in that when supplying molten resin for the core material, excessive heat and stretching is applied to the skin material, causing damage to the texture and causing tearing. Means for solving the problem by providing a method for producing a multi-layer molded product with excellent texture The present inventors have continued to earnestly study the production of multi-layer molded products with excellent texture. As a result of this lie, when manufacturing a multilayer molded product consisting of a skin material and a core resin, the skin material was sufficiently squeezed and pre-shaped in the same molding machine, and the molten resin was not mixed into the mold before it was closed. The present inventors have discovered that it is possible to obtain a multilayer molded product with an excellent skin texture by supplying the above material, and have completed the present invention. That is, the present invention is a method for manufacturing a multilayer molded product (12) consisting of a skin material (11) and a core resin (11), which comprises the following steps: First step (b) of sandwiching the skin material (8) between the attached skin material fixing frame (4) and the female mold (8) Cavity clearance of the male mold (2) and female mold (8) Male mold (2) until the thickness is less than 5 times the thickness of the skin material.
and/or a second step (c) of moving the female mold (8) and preforming the skin material (8). In the third step of moving the male mold (2) and/or female mold (8) until the cavity clearance is larger than the completed cavity clearance) The core material molten resin (1
Fourth step (e) of supplying 0) Male mold (2) and female mold (8)
In the fifth step, the mold is closed and molded until a predetermined cavity clearance is achieved.In this specification, the outermost side facing when the mold is closed in 9) is referred to as the male mold. The inner box is 4
It's called a type.
以下に図面に基づいて本発明の詳細な説明する。第１図
、第８図〜第６図は本発明の実施方法を表わす装置の縦
の断面図である。第２図は第１図のＡ −Ａ’線から下
金型（雄型）及び表皮材固定枠をみた平ｉ図である。第
２図において連続的に供給される表皮材は透視して表わ
されている。The present invention will be described in detail below based on the drawings. 1, 8-6 are longitudinal cross-sectional views of an apparatus illustrating the method of carrying out the invention. FIG. 2 is a plan view of the lower mold (male mold) and the skin material fixing frame taken from the line A-A' in FIG. In FIG. 2, the continuously supplied skin material is shown in perspective.
金型装置（１）は下方に位置する雄型（２）と表皮材固
定枠（４）と伸縮装置（５）と周知の昇降機構（図示せ
ず）により支持され上方に位置する雌型（８）とからな
る０表皮材固定枠（４）は雌型（８）に対向する上面を
有し、雄型ａ）側に複数の伸縮装置（５）によりと上移
動自在に取付けられ、かつ雄型Ｃ）の外側面（６）が貫
通できる開口を有す、伸縮装置（６）は必要なストロー
ク長等に応じて公知の油圧シリンダー、空圧シリンダー
、空圧スプリング、ウレタンスプリング、鋼製ばね等任
意に採用されるものである。The mold device (1) is supported by a male mold (2) located below, a skin material fixing frame (4), an expansion/contraction device (5), and a well-known elevating mechanism (not shown), and a female mold ( A skin material fixing frame (4) consisting of (8) has an upper surface facing the female mold (8), is attached to the male mold (a) side by a plurality of telescoping devices (5), and is movable upwardly. The telescoping device (6), which has an opening through which the outer surface (6) of the male type C) can be penetrated, can be made of a known hydraulic cylinder, pneumatic cylinder, pneumatic spring, urethane spring, or steel, depending on the required stroke length, etc. A spring or the like may be arbitrarily adopted.
前記のような装置を用いて次のように本発明の方法を実
施する。The method of the present invention is carried out as follows using the apparatus as described above.
第一工程
表皮材固定枠（４）と雌型（８）とめ間に表皮材（８）
を敷設する（第１図）。ついで、雌型（３）を降下させ
、表皮材固定枠（４）との間で表皮材（８）を挟持する
。First step: Skin material (8) between the skin material fixing frame (4) and the female mold (8)
(Figure 1). Then, the female mold (3) is lowered and the skin material (8) is held between it and the skin material fixing frame (4).
第二工程
になるまで型閉めを行なう、これに伴ない、表皮材（８
）の周縁（９）が表皮材固定枠（４）と雌型（３）に絞
込み予備賦形される（第８図）つ
第三工程
雄型（りと雌型（８）のキャビティクリヤランス（ａ）
が第二工程ならびに賦形完了時のキャビティクリヤラン
スより大きくなるまで雌型（８）を上昇させる（第４図
）。The mold is closed until the second step, and along with this, the skin material (8
) is narrowed and preformed into the skin material fixing frame (4) and the female mold (3) (Fig. 8).The third step is the cavity clearance of the male mold (rito) and the female mold (8). (a)
The female mold (8) is raised until it becomes larger than the cavity clearance upon completion of the second step and shaping (FIG. 4).
第四工程
表皮材（８）と雄型（２）との間に、雄型（２）内に設
けられた樹脂通路（図示せず）を通じて溶融Ｂ
樹 供給する。Fourth step Molten B is supplied between the skin material (8) and the male mold (2) through a resin passage (not shown) provided in the male mold (2).
第五工程
雌型（８）を降下させ（第６図）雌・雌両金型を所定の
賦形完了時のキャビティクリヤランスの位置まで型閉め
することにより、表皮材（８）と芯材樹脂（１１）が一
体となって成形が完了して多層成形品（１２）が得られ
る（第６図）。Fifth step: By lowering the female mold (8) (Fig. 6) and closing both the female and female molds to the cavity clearance position when the prescribed shaping is completed, the skin material (8) and the core material When the resin (11) is integrated, the molding is completed and a multilayer molded product (12) is obtained (FIG. 6).
本発明において溶融樹脂（１０）の供給は上記のタイミ
ングに限定されるものではなく、表皮材（８）の絞込み
予備賦形完了後、雌型（８）を上昇させて雌・雄金型キ
ャビティクリヤランスが賦形完了時のキャビティクリヤ
ランスより大きい状態であればよく、この範囲内で雌型
（８）を上昇させながら行なってもよいし、−時停止さ
せて行なってもよい。さらに特定位置ま婁
で１巷させ再び降下が始ってから供給してもよいう
本発明において、成形完了時に表皮材（８）が当接する
側の型に真空吸引機構を設けておき、賦形工程の適切な
タイミングにおいて真空吸って成形するようにしてもよ
い。In the present invention, the supply of the molten resin (10) is not limited to the above-mentioned timing; after the skin material (8) has been narrowed and preformed, the female mold (8) is raised to fill the female and male mold cavities. It is sufficient that the clearance is greater than the cavity clearance upon completion of shaping, and within this range, the process may be carried out while the female mold (8) is being raised, or may be carried out by stopping at -. Furthermore, in the present invention, in which the supply may be carried out once at a specific position and after the descent starts again, a vacuum suction mechanism is provided in the mold on the side that the skin material (8) comes into contact with when the molding is completed. The molding may be performed by vacuum suction at an appropriate timing in the molding process.
さらに成形完了時に表皮材（８）が当接するのと反対側
の型に加圧空気の吹込み機構を設けてお給で表皮材（８
）を最終形状までまたは最終形状に近いところまで賦形
し、その後型閉め完了までに溶融樹脂（１０）の供給を
行なって成形してもよいっ
また、次の各工程、すなわち、表皮材（８）を絞Ｒ咋備
賦形する第二工程、溶融樹脂（１ｏ）を供給する第四工
程、および、型閉め成形を行なう第五工程のすべて又は
一部の工程において、表皮材固定枠（４）と雌型（８）
による表皮材（８）の挟持力は表皮材（８）の種類なら
びに製品形状により適切に調整される。Furthermore, a pressurized air blowing mechanism is provided on the mold on the opposite side of the mold to which the skin material (8) comes into contact when the molding is completed.
) may be shaped to the final shape or close to the final shape, and then the molten resin (10) may be supplied and molded until the mold is closed. In all or part of the second step of drawing R-shape 8), the fourth step of supplying the molten resin (1o), and the fifth step of closing the mold, the skin material fixing frame ( 4) and female type (8)
The clamping force of the skin material (8) by the skin material (8) is appropriately adjusted depending on the type of the skin material (8) and the shape of the product.
さらに、雄型（２）と雌−（３）の位置関係は自由に選
択でき、表皮材固定枠（４）は雄型（２）側、雌型（３
）側いずれにも取付けることができる。Furthermore, the positional relationship between the male mold (2) and the female mold (3) can be freely selected, and the skin material fixing frame (4) is placed on the male mold (2) side and on the female mold (3) side.
) can be installed on either side.
この発明に用いられる芯材樹脂としては圧縮成形、射出
成形及び押出し成形において通常使用されているものを
いずれも用いることができ、例えばポリプロピレン、ポ
リエチレン、ポリスチレン、アクリロニトリル−スチレ
ン−ブタジェンブロック共重合体、ナイロン等の熱可塑
性樹脂、エチレン−プロピレンブロック共重合体、スチ
レン−ブタジェンブロック共重合体等の熱可塑性エラス
トマー等の非発泡性または発泡性樹脂、およびこれらに
無機質充填剤、ガラス繊維等の充填剤、顔料、滑剤、帯
電防止剤等の添加剤を含有したものを用いることができ
る。As the core material resin used in this invention, any resin commonly used in compression molding, injection molding and extrusion molding can be used, such as polypropylene, polyethylene, polystyrene, acrylonitrile-styrene-butadiene block copolymer. , thermoplastic resins such as nylon, non-foamable or foamable resins such as thermoplastic elastomers such as ethylene-propylene block copolymers, styrene-butadiene block copolymers, and inorganic fillers, glass fibers, etc. Those containing additives such as fillers, pigments, lubricants, and antistatic agents can be used.
この発明に用いられる表皮材としては、織布、不織布、
金属、繊維、熱可塑性樹脂のネット、紙、金属フォイル
や熱可塑性樹脂及び熱可塑性エラストマーのシートまた
はフィルムが挙げられ、またしぼ等の凹凸模様、印刷、
染色等で加飾されたもの、あるいは発泡体を用いてもよ
い。The skin materials used in this invention include woven fabrics, nonwoven fabrics,
Examples include metal, fiber, thermoplastic resin net, paper, metal foil, thermoplastic resin and thermoplastic elastomer sheet or film, and uneven patterns such as grains, printing,
A material decorated with dyeing or the like or a foam material may also be used.
さらにこれらの単独もしくは２種以上を接着剤等を用い
てα１ｍしたＨＡ−品の形態にて使用することも可能で
あろうこれら表皮材の使用にあたっては表皮材の引張応
力、伸びを調整するため供給に先立って全面または一部
の予備加熱を行ってもよい。Furthermore, it may be possible to use these alone or two or more of them in the form of an HA-product with α1m using adhesives, etc. When using these skin materials, it is necessary to adjust the tensile stress and elongation of the skin material. Prior to supply, the entire surface or a portion thereof may be preheated.
〈発明の効果〉
本発明では、表皮材の周縁を適切な力で保持して表皮材
のすべり抵抗をコントロールしながら雄・４両金型のキ
ャビティクリヤランスが表皮材の厚さの５倍以下になる
まで雄型および／または雌型を移動させて表皮材を十分
に絞り込み予備賦形し、その後両金型のキャビティクリ
ヤランスを拡げ賦形完了時のキャビティクリヤ格
ランスより大きい状態にして、表皮材に傘÷をもたせて
おいた状態で表皮材と雄型または雌型との間に芯材の溶
融樹脂を供給することにより溶融樹脂供給時に表皮材に
過剰な熱と延伸を与えないで、風合の低下、破れ等をお
さえることができる。<Effects of the Invention> In the present invention, while controlling the sliding resistance of the skin material by holding the peripheral edge of the skin material with an appropriate force, the cavity clearance of the male and four-sided molds is 5 times or less the thickness of the skin material. The male and/or female molds are moved until the skin material is sufficiently squeezed and preformed, and then the cavity clearance of both molds is expanded to a state larger than the cavity clearance at the time of completion of molding. By supplying the molten resin of the core material between the skin material and the male or female mold with an umbrella ÷ on the skin material, excessive heat and stretching are not applied to the skin material when supplying the molten resin. , deterioration of texture, tearing, etc. can be suppressed.
この方法により、相当に複雑な形状であっても、風合の
費れた多ノー成形品を作業効率良く製造することが可能
となる。By this method, even if the shape is quite complicated, it is possible to manufacture a multi-knot molded product with good texture with high working efficiency.
〈実施例１〉
芯材＆ｄｉｆとしてポリプロピレン（住友化学工業（株
）住友ノーブレンｅ）ＡＹ５６４）を、表皮材として厚
さ０．６ ｍでしぼ付のポリ塩化ビニルシートと、厚さ
８ｍで発泡倍率１５倍のポリプロピン発泡シートとのＮ
１４品を用いて、図１〜だ、
・ｉ成形品は破れ、しわがなく、し
ぼの保持性も良好な成形品が得られた。<Example 1> Polypropylene (Sumitomo Chemical Co., Ltd., Sumitomo Noblen e) AY564) was used as the core material and dif, a grained polyvinyl chloride sheet with a thickness of 0.6 m was used as the skin material, and a foaming ratio of 8 m was used as the skin material. 15x N with polypropyne foam sheet
Using 14 items, Figure 1~
- The i-molded product was free from tears and wrinkles and had good grain retention.
成形条件：
窃脂温度２００°Ｃ１金型温度３５℃
第二工程終了時のキャビティクリヤランス３．０■、第
四工程でのキャビティクリヤランス５０ａｍ、賦形完了
時のクリヤランス８．０鑓
く比較例ン
実施例１において第二工程を省略してキャビティクリヤ
ランスを５０口にした状態で第四工程の芯材樹脂の供給
を行なったことを除いて実施例１と同一条件で成形した
。成形品はコーナ一部において表皮材が破れ良好な成形
品が得られなかった。Molding conditions: Greasing temperature 200°C, mold temperature 35°C Cavity clearance at the end of the second step 3.0mm, cavity clearance at the fourth step 50am, clearance at the end of shaping 8.0 Example Molding was carried out under the same conditions as in Example 1, except that the second step was omitted and the core material resin was supplied in the fourth step with the cavity clearance set at 50 holes. The skin material was torn at some corners of the molded product, and a good molded product could not be obtained.
〈実施例２〉
芯材樹脂としてＡＢＳｔＭ脂（住友ノーガタック（株）
クララスチックのＭＴＨ−２）、表皮材として２６０１
１ｒＡｎ２、厚さ１．５ｍ（７）ポリエステル製不織布
を用い、樹脂温度２４０°Ｃ１第二工程終了時のキャビ
ティクリヤランス２．０ ｍ 。<Example 2> ABStM resin (Sumitomo Naugatac Co., Ltd.) was used as the core resin.
Clarastic MTH-2), 2601 as a skin material
1rAn2, thickness 1.5m (7) Using polyester nonwoven fabric, resin temperature 240°C1 Cavity clearance at the end of the second step 2.0m.
第四工程でのキャビティクリヤランスＬＯｍにしたこと
を除いて実施例１と同一条件で成形した。成形品は破れ
、しわ、樹脂のしみ出しのない良好な成形品が得られた
つ
〈実施例８〉
芯材樹脂としてポリプロピレン（住友化学工業（株）住
友ノーブレン■ＡＺ５６４）を、゛表皮材として裏面に
ウーリイナイロンを裏打ちしたポリ塩化ビニルシート（
厚さ０．５１１１１）を用い、第二工程終了時のキャビ
ティクリヤランス２．０１、第四工程でのキャビティク
リヤランス１５鴎、賦形完了時のキャビティクリヤラン
スを２．０鰭にしたことを除いて実施例１と同一条件で
成形した。破れ、しわがなく、しぼの保持性も良好な成
形品が得られた。Molding was carried out under the same conditions as in Example 1 except that the cavity clearance was set to LOm in the fourth step. A good molded product with no tears, wrinkles, or resin seepage was obtained. (Example 8) Polypropylene (Sumitomo Chemical Co., Ltd., Sumitomo Noblen AZ564) was used as the core resin, and the back surface was used as the skin material. Polyvinyl chloride sheet lined with woolly nylon (
The thickness was 0.51111), the cavity clearance at the end of the second step was 2.01, the cavity clearance at the fourth step was 15, and the cavity clearance at the end of shaping was 2.0. Molding was carried out under the same conditions as in Example 1 except for the following. A molded article with no tears or wrinkles and good grain retention was obtained.
第１図〜第６図は本発明の詳細な説明する図面であり、
第１図、第８図〜第６図は装置断面図、第２図は第１図
のＡ−Ａ７線から下金型（雄型）及び表皮材固定枠をみ
た平面図である。第２図において連続的に供給される表
皮材は透視して表わされている。
１、金型装置 ２．雄型
亀 雌型 ４６表皮材固定枠５、伸縮装置
６．雄型の外側面７、 雌型の内側面 ８１表
皮材
９、表皮材の周縁 １０．＠融樹脂
１１、 成形後の芯材樹脂部 １２． 多層成形品
第 ｌ 図
会
第 ３ 図
第 ４ 図
第 ５ 図
を
第 ６ 図FIGS. 1 to 6 are drawings for explaining the present invention in detail,
1 and 8 to 6 are sectional views of the device, and FIG. 2 is a plan view of the lower mold (male mold) and the skin material fixing frame taken from line A-A7 in FIG. 1. In FIG. 2, the continuously supplied skin material is shown in perspective. 1. Mold equipment 2. Male type turtle Female type 46 Skin material fixing frame 5, expansion and contraction device
6. Outer surface 7 of male mold, inner surface 81 of female mold 81 skin material 9, periphery of skin material 10. @ Melted resin 11, core resin part after molding 12. Multi-layer molded product Figure 1 Figure 3 Figure 4 Figure 5 to Figure 6
Claims (1)
からなる多層成形品（１２）の製造方法。 （イ）雄型または雌型に移動自在に取付けられた表皮材
固定枠（４）と雌型（３）との間に表皮材（８）を挾持
する第一工程 （ロ）雄型（２）と雌型（３）のキャビティクリヤラン
スを表皮材の厚さの５倍以下になるまで雄型（２）およ
び／または雌型（３）を移動させて表皮材（８）を予備
賦形する第二工程 （ハ）雄型（２）と雌型（３）のキャビティクリヤラン
スを第二工程ならびに賦形完了時のキャビティクリヤラ
ンスより大きくなるまで雄型（２）および／または雌型
（３）を移動させる第三工程 （ニ）表皮材（８）と雄型（２）または雌型（３）との
間に芯材の溶融樹脂（１０）を供給する第四工程 （ホ）雄型（２）と雌型（３）を所定のキャビティクリ
ヤランスになるまで型閉めして成形を行なう第五工程[Scope of Claims] A method for manufacturing a multilayer molded product (12) comprising a skin material (8) and a core resin (11), which comprises the following steps. (a) First step of sandwiching the skin material (8) between the skin material fixing frame (4) movably attached to the male or female mold and the female mold (3) (b) Male mold (2) ) and the female mold (3) by moving the male mold (2) and/or the female mold (3) until the cavity clearance of the female mold (3) is less than 5 times the thickness of the skin material to preform the skin material (8). Second step (c): Adjust the cavity clearance of the male mold (2) and female mold (3) until the cavity clearance of the male mold (2) and the female mold (3) becomes larger than the cavity clearance at the end of the second step and the completion of shaping. 3) The third step of moving the core material (d) The fourth step of supplying the core material molten resin (10) between the skin material (8) and the male mold (2) or the female mold (3) (e) The male mold The fifth step is to perform molding by closing the mold (2) and female mold (3) until a predetermined cavity clearance is achieved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62300558A JPH01141011A (en) | 1987-11-28 | 1987-11-28 | Preparation of multi-layered molded item |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62300558A JPH01141011A (en) | 1987-11-28 | 1987-11-28 | Preparation of multi-layered molded item |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01141011A true JPH01141011A (en) | 1989-06-02 |
| JPH0583055B2 JPH0583055B2 (en) | 1993-11-24 |
Family
ID=17886277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62300558A Granted JPH01141011A (en) | 1987-11-28 | 1987-11-28 | Preparation of multi-layered molded item |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01141011A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1992019446A1 (en) * | 1991-04-25 | 1992-11-12 | Sumitomo Chemical Company, Limited | Multilayer molded piece and method for manufacturing the same |
| US6280836B1 (en) * | 1991-04-25 | 2001-08-28 | Sumitomo Chemical Co., Ltd. | Multilayer molded article |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59159342A (en) * | 1983-03-01 | 1984-09-08 | 住友化学工業株式会社 | Manufacture of multilayer shape |
-
1987
- 1987-11-28 JP JP62300558A patent/JPH01141011A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59159342A (en) * | 1983-03-01 | 1984-09-08 | 住友化学工業株式会社 | Manufacture of multilayer shape |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1992019446A1 (en) * | 1991-04-25 | 1992-11-12 | Sumitomo Chemical Company, Limited | Multilayer molded piece and method for manufacturing the same |
| US6280836B1 (en) * | 1991-04-25 | 2001-08-28 | Sumitomo Chemical Co., Ltd. | Multilayer molded article |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0583055B2 (en) | 1993-11-24 |
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