JPH07156196A - Production of insert sheet and insert moldings - Google Patents
Production of insert sheet and insert moldingsInfo
- Publication number
- JPH07156196A JPH07156196A JP34064093A JP34064093A JPH07156196A JP H07156196 A JPH07156196 A JP H07156196A JP 34064093 A JP34064093 A JP 34064093A JP 34064093 A JP34064093 A JP 34064093A JP H07156196 A JPH07156196 A JP H07156196A
- Authority
- JP
- Japan
- Prior art keywords
- insert
- sheet
- resin layer
- temperature heat
- resin
- 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
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
- B29C45/14778—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 article consisting of a material with particular properties, e.g. porous, brittle
- B29C45/14811—Multilayered 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
- 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
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2621/00—Use of unspecified rubbers for preformed parts, e.g. for inserts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2633/00—Use of polymers of unsaturated acids or derivatives thereof for preformed parts, e.g. for inserts
- B29K2633/04—Polymers of esters
- B29K2633/08—Polymers of acrylic acid esters, e.g. PMA, i.e. polymethylacrylate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0018—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular optical properties, e.g. fluorescent or phosphorescent
- B29K2995/002—Coloured
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、AV機器のフロントパ
ネル、自動車の計器パネル、各種ボタンなどに用いられ
る成形品の表面に形成されるインサートシートとインサ
ート成形品の製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an insert sheet formed on the surface of a molded product used for a front panel of an AV device, an instrument panel of an automobile, various buttons, etc., and a method for manufacturing the insert molded product.
【０００２】[0002]
【従来の技術】従来から、基材シート上に、少なくとも
絵柄層がインキによって形成されたインサートシート
と、型閉めされることによって所望の形状の成形品を得
ることができるキャビティを形成する一対の射出成形金
型とを用い、まず、所望の成形品の表面形状に沿うよう
にインサートシートを加熱プレフォームし、インサート
シートの絵柄層側に溶融樹脂が射出されるようにインサ
ートシートを射出成形金型内に装着し、射出成形金型を
型閉めし、キャビティ内に溶融樹脂を射出し、溶融樹脂
の冷却固化後、インサート成形品を射出成形金型より取
り出す、いわゆるインサート成形法がある。2. Description of the Related Art Conventionally, on a base sheet, an insert sheet in which at least a picture layer is formed of ink and a pair of cavities for forming a molded product having a desired shape by closing a mold are formed. Using an injection mold, first insert the insert sheet by heating and preforming the insert sheet so that it conforms to the surface shape of the desired molded product, and inject the molten resin into the pattern layer side of the insert sheet. There is a so-called insert molding method in which the mold is mounted in the mold, the mold is closed, the molten resin is injected into the cavity, the molten resin is cooled and solidified, and then the insert molded product is taken out from the injection mold.
【０００３】このインサート成形法に用いる、従来のイ
ンサートシートとして、（1）インキ乾燥時に変形する
低温熱変形性樹脂、たとえばアクリルゴムなどからなる
基材シート上に、絵柄層や接着層を印刷インキによって
形成したもの、あるいは、（2）加熱プレフォーム時の
加熱温度では変形するが、印刷インキの加熱乾燥時およ
び射出成形時には変形しない高温熱変形性樹脂、たとえ
ばポリカーボネート樹脂などからなる基材シート上に、
絵柄層や接着層を印刷インキによって形成したものがあ
る。As a conventional insert sheet used in this insert molding method, (1) printing ink with a pattern layer or an adhesive layer on a base sheet made of a low temperature heat-deformable resin, such as acrylic rubber, which deforms when ink is dried. On a base sheet made of a high-temperature heat-deformable resin, such as polycarbonate resin, which is deformed at the heating temperature during (2) heating preform but does not deform during heating and drying of printing ink and injection molding. To
There is a pattern layer or an adhesive layer formed by printing ink.
【０００４】[0004]
（1）の低温熱変形性樹脂からなる基材シートは、基材
シートがインキ乾燥時に熱変形するため、ロールで巻き
取ると基材シートの寸法安定性がなくなり、絵柄層の絵
柄が歪んだり、切れたり、位置ずれしたりしてしまう。
そこで、この問題を解決するためには、絵柄層や接着層
の膜厚を薄くして短時間でインキを乾燥させる方法と、
長時間かけてインキを乾燥させる方法とが考えられる。
前者の場合、グラビア印刷法によって絵柄層を設けるこ
とになるが、ボリューム感のある絵柄層や接着層になら
ないという問題点がある。逆に、後者の場合、スクリー
ン印刷法によって絵柄層や接着層を設けることになる
が、枚葉印刷となり生産効率が悪くなるという問題点が
ある。The base sheet made of low temperature heat-deformable resin in (1) is deformed by heat when the ink is dried, so the dimensional stability of the base sheet is lost when wound with a roll, and the design of the design layer is distorted. , It will be cut or misaligned.
Therefore, in order to solve this problem, a method of reducing the film thickness of the pattern layer or the adhesive layer and drying the ink in a short time,
A method of drying the ink over a long period of time is considered.
In the former case, the pattern layer is provided by the gravure printing method, but there is a problem that the pattern layer and the adhesive layer do not have a volume feeling. On the contrary, in the latter case, although the pattern layer and the adhesive layer are provided by the screen printing method, there is a problem that the sheet-fed printing is performed and the production efficiency is deteriorated.
【０００５】（2）の高温熱変形性樹脂からなる基材シ
ートは、加熱プレフォーム時には比較的高温で十分な時
間をかけて加熱されるので、大雑把な形状に沿った熱変
形はするが、金型の微小凹凸形状に沿った熱変形はしな
い。溶融樹脂射出時には溶融樹脂が比較的高温で一瞬だ
けインサートシートが加熱されるが、すぐに冷却される
ので、基材シートが金型の微小凹凸に沿った形状に熱変
形されない。そのため、金型の微小凹凸に沿った形状に
基材シートを熱変形させることは困難であった。The base sheet made of the high temperature heat-deformable resin of (2) is heated at a relatively high temperature for a sufficient time during heating preforming, so that the heat deformation follows a rough shape. There is no thermal deformation along the minute irregularities of the mold. When the molten resin is injected, the molten resin is heated at a relatively high temperature for a moment, but the insert sheet is immediately cooled, so that the base sheet is not thermally deformed into a shape along the minute irregularities of the mold. Therefore, it has been difficult to thermally deform the base sheet into a shape along the minute irregularities of the mold.
【０００６】この発明の目的は、寸法安定性が良好で、
射出成形金型のシボなどの微小凹凸が容易に形成される
インサートシートとインサート成形品の製造方法とを提
供することにある。The object of the present invention is to have good dimensional stability,
An object of the present invention is to provide an insert sheet and a method for manufacturing an insert-molded product, in which minute irregularities such as texture of an injection mold are easily formed.
【０００７】[0007]
【課題を解決するための手段】上記の目的を達成するた
めに、この発明のインサートシートは、インサートシー
トが射出成形金型内に装着され、射出成形金型を型閉め
することによって形成されたキャビティ内に溶融樹脂が
射出され、溶融樹脂が冷却固化された後、インサート成
形品を射出成形金型より取り出すインサート成形法で使
用されるインサートシートにおいて、溶融樹脂射出時に
変形する低温熱変形性樹脂層とインキ乾燥時に変形せず
溶融樹脂射出時に変形する高温熱変形性樹脂層との積層
体からなる基材シートの高温熱変形性樹脂層上に、少な
くとも絵柄層が積層されるように構成した。In order to achieve the above object, the insert sheet of the present invention is formed by mounting the insert sheet in an injection mold and closing the injection mold. A low-temperature heat-deformable resin that is deformed when the molten resin is injected in the insert sheet used in the insert molding method in which the molten resin is injected into the cavity and the molten resin is cooled and solidified and then the insert molded product is taken out from the injection mold. At least a pattern layer is laminated on the high-temperature heat-deformable resin layer of the base sheet composed of a layer and a high-temperature heat-deformable resin layer that does not deform when the ink is dried and deforms when the molten resin is injected. .
【０００８】また、この発明のインサートシートは、基
材シートが、低温熱変形性樹脂層の高温熱変形性樹脂層
を積層した面とは反対面に、低温熱変形性樹脂層よりも
高い硬度を有する高硬度樹脂層が積層されたものであっ
てもよい。In the insert sheet of the present invention, the base sheet has a higher hardness than the low temperature heat deformable resin layer on the surface opposite to the surface of the low temperature heat deformable resin layer on which the high temperature heat deformable resin layer is laminated. It may be a laminate of high-hardness resin layers having.
【０００９】この発明のインサート成形品の製造方法
は、前記この発明のインサートシートと、型閉めされる
ことによって所望の形状の成形品を得ることができるキ
ャビティを形成するとともに、キャビティを形成する面
にシボなどの微小凹凸が形成された一対の射出成形金型
とを用い、まず、インサートシートの絵柄層側に溶融樹
脂が射出されるようにインサートシートを射出成形金型
内に装着し、射出成形金型を型閉めし、キャビティ内に
溶融樹脂を射出し、溶融樹脂の冷却固化後、インサート
成形品を射出成形金型より取り出すように構成した。The method for producing an insert-molded product of the present invention comprises the insert sheet of the present invention, a cavity for forming a molded product having a desired shape by closing the mold, and a surface for forming the cavity. Using a pair of injection molding dies on which fine irregularities such as grain are formed, first insert the insert sheet in the injection molding die so that the molten resin is injected to the picture layer side of the insert sheet, and then inject it. The mold was closed, the molten resin was injected into the cavity, and after the molten resin was cooled and solidified, the insert-molded product was taken out from the injection mold.
【００１０】以下、この発明を図面を参照しながら詳細
に説明する。この発明のインサートシート１は、低温熱
変形性樹脂層１０と高温熱変形性樹脂層１１とが積層さ
れたものを基材シートとし、高温熱変形性樹脂層１１上
に絵柄層１２、接着層１３が順次形成されている（図１
参照）。絵柄層１２が接着性を有するときは、接着層１
３は必要ない。絵柄層１２、接着層１３は、印刷法や塗
布法などによって形成する。The present invention will be described below in detail with reference to the drawings. The insert sheet 1 of the present invention uses a laminate of a low-temperature heat-deformable resin layer 10 and a high-temperature heat-deformable resin layer 11 as a base sheet, and a pattern layer 12 and an adhesive layer on the high-temperature heat-deformable resin layer 11. 13 are sequentially formed (Fig. 1
reference). When the pattern layer 12 has adhesiveness, the adhesive layer 1
3 is not necessary. The pattern layer 12 and the adhesive layer 13 are formed by a printing method or a coating method.
【００１１】低温熱変形性樹脂層１０は、溶融樹脂射出
時に変形する熱可塑性樹脂よりなるシート状、フィルム
状のものである。インサートシートがキャビティ内に溶
融樹脂を射出する前に所望の成形品の表面形状に沿うよ
うに加熱プレフォームして用いるものであるときは、低
温熱変形性樹脂層１０は、加熱プレフォーム時にも変形
するものである。低温熱変形性樹脂は、アクリルゴム、
スチレン樹脂、塩化ビニル樹脂、ポリエチレン樹脂、ポ
リプロピレン樹脂、ナイロン樹脂、ＡＢＳ樹脂などがあ
り、熱変形温度が約100℃以下のものがよい。The low-temperature heat-deformable resin layer 10 is in the form of a sheet or film made of a thermoplastic resin that deforms when the molten resin is injected. When the insert sheet is used by heating preforming so as to follow the surface shape of the desired molded product before injecting the molten resin into the cavity, the low temperature heat-deformable resin layer 10 is used even during heating preforming. It transforms. Low temperature heat deformable resin is acrylic rubber,
There are styrene resin, vinyl chloride resin, polyethylene resin, polypropylene resin, nylon resin, ABS resin and the like, and those having a heat distortion temperature of about 100 ° C. or less are preferable.
【００１２】高温熱変形性樹脂層１１は、インキ乾燥時
に変形せず溶融樹脂射出時に変形する熱可塑性樹脂より
なるシート状、フィルム状のものである。インサートシ
ートがキャビティ内に溶融樹脂を射出する前に所望の成
形品の表面形状に沿うように加熱プレフォームして用い
るものであるときは、高温熱変形性樹脂層１１は、加熱
プレフォーム時にも変形するものである。高温熱変形性
樹脂は、ポリカーボネート樹脂、ポリフェニレンエーテ
ル樹脂、アセテート樹脂、ポリアクリレート樹脂などの
熱可塑性樹脂があり、熱変形温度が約100℃以上のもの
がよい。The high temperature heat-deformable resin layer 11 is a sheet or film made of a thermoplastic resin which is not deformed when the ink is dried and is deformed when the molten resin is injected. When the insert sheet is used by being preformed by heating so as to follow the desired surface shape of the molded product before injecting the molten resin into the cavity, the high temperature heat-deformable resin layer 11 can be used even at the time of heating preforming. It transforms. The high-temperature heat-deformable resin includes thermoplastic resins such as polycarbonate resin, polyphenylene ether resin, acetate resin, and polyacrylate resin, and the one having a heat deformation temperature of about 100 ° C. or higher is preferable.
【００１３】低温熱変形性樹脂層１０と高温熱変形性樹
脂層１１との積層は、各種接着剤や溶着によって接着す
るとよい。The low-temperature heat-deformable resin layer 10 and the high-temperature heat-deformable resin layer 11 may be laminated by various adhesives or welding.
【００１４】この発明のインサートシート１は、低温熱
変形性樹脂層１０上に、低温熱変形性樹脂層１０よりも
高い硬度の高硬度樹脂層２０が形成されていてもよい。
高硬度樹脂は、メチルメタアクリレート樹脂などの鉛筆
硬度１Ｈ以上のものがある。高硬度樹脂層２０は、単体
ではシート状やフィルム状になりにくい硬度の高い樹脂
であり、シート状やフィルム状にするときは、通常は、
前記低温熱変形性樹脂とともに共押し出し法によって成
形され、積層物の一構成層として存在することになる。In the insert sheet 1 of the present invention, a high hardness resin layer 20 having a hardness higher than that of the low temperature heat deformable resin layer 10 may be formed on the low temperature heat deformable resin layer 10.
High hardness resins include those having a pencil hardness of 1H or more, such as methyl methacrylate resin. The high-hardness resin layer 20 is a resin having a high hardness that does not easily become a sheet or a film when it is used alone.
It is molded together with the low temperature heat-deformable resin by a coextrusion method, and is present as one constituent layer of the laminate.
【００１５】つぎに、インサート成形品の製造方法を説
明する。Next, a method of manufacturing the insert-molded product will be described.
【００１６】まず、前記したプレフォーム用インサート
シート１と、型閉めされることによって所望の形状の成
形品を得ることができるキャビティ４０を形成するとと
もに、キャビティ４０を形成する面に微小凹凸４１が形
成された一対の射出成形金型４とを用意する（図３参
照）。微小凹凸４１とは、彫刻などで射出成形金型表面
に形成されたシボに代表される凹凸のことである。First, the insert sheet 1 for preform and the cavity 40 that can obtain a molded product having a desired shape by closing the mold are formed, and minute irregularities 41 are formed on the surface forming the cavity 40. The pair of injection molding dies 4 thus formed are prepared (see FIG. 3). The minute concavities and convexities 41 are irregularities represented by a grain formed on the surface of the injection molding die by engraving or the like.
【００１７】そして、必要により所望の成形品の表面形
状に沿うようにインサートシート１を加熱プレフォーム
する。加熱プレフォームするには、凸部を有するコア型
と、凸部と嵌まり合う凹部を有するキャビティ型とから
なるプレス金型を用いた加熱プレス成形装置、あるい
は、加熱真空成形装置、加熱圧空成形装置など、通常の
樹脂シートを所望の立体形状に成形する加熱プレフォー
ム手段を用いるとよい。キャビティ型の凹部は、後述す
る所望の成形品を射出成形するための射出成形金型４の
凹部と全く同じ内面形状である。インサートシート１の
プレフォーム形状は、後述する射出成形金型の凹部の内
面形状に密着して合致する形状にする。加熱温度は、イ
ンサートシート１の基材シートの材質にもよるが、150
〜180℃が適当である。加熱プレフォームは、射出成形
金型４内で行ってもよい。Then, if necessary, the insert sheet 1 is heated and preformed so as to conform to the desired surface shape of the molded product. For heating preforming, a heating press molding apparatus using a press die including a core mold having a convex portion and a cavity mold having a concave portion to be fitted with the convex portion, a heating vacuum forming device, a heating pressure air forming It is advisable to use a heating preform means for molding a normal resin sheet into a desired three-dimensional shape, such as an apparatus. The concave portion of the cavity mold has exactly the same inner surface shape as the concave portion of the injection mold 4 for injection molding a desired molded product described later. The preform shape of the insert sheet 1 is a shape that closely matches and matches the inner surface shape of the recess of the injection molding die described later. The heating temperature depends on the material of the base sheet of the insert sheet 1, but is 150
~ 180 ° C is suitable. The heating preform may be performed in the injection mold 4.
【００１８】つぎに、必要により不要部分を切断除去す
る。インサートシート１の不要部分を切断除去するに
は、ナイフあるいは切断刃を有するプレス切断装置、一
方の金型の凸部の周縁と他方の金型の凹部の周縁とで断
裁をおこなう摺動切断金型、あるいは加熱切断装置、レ
ーザー切断装置など、通常の樹脂シートの切断手段を用
いるとよい。Next, if necessary, unnecessary portions are cut and removed. In order to cut and remove unnecessary portions of the insert sheet 1, a press cutting device having a knife or a cutting blade, a sliding cutting die for cutting with a peripheral edge of a convex portion of one die and a peripheral edge of a concave portion of the other die. A normal resin sheet cutting means such as a mold, a heating cutting device, or a laser cutting device may be used.
【００１９】インサートシート１の加熱プレフォームと
切断除去とは、どちらを先に行ってもよい。あるいは切
断刃付きプレフォームプレス金型を用いることによっ
て、同時に行うこともできる。Either the heating preform or the cutting removal of the insert sheet 1 may be performed first. Alternatively, by using a preform press die with a cutting blade, it is possible to carry out simultaneously.
【００２０】つぎに、インサートシート１を射出成形金
型４内に装着し（図４参照）、射出成形金型４を型閉め
し、キャビティ４０内に溶融樹脂５を射出する（図５参
照）。インサートシート１の絵柄層１３側に溶融樹脂が
射出されるようにインサートシート１を射出成形金型４
内に装着する。Next, the insert sheet 1 is mounted in the injection molding die 4 (see FIG. 4), the injection molding die 4 is closed, and the molten resin 5 is injected into the cavity 40 (see FIG. 5). . The insert sheet 1 is injection-molded so that the molten resin is injected into the pattern layer 13 side of the insert sheet 1.
Install inside.
【００２１】溶融樹脂５としては、アクリロニトリルス
チレン樹脂、アクリロニトリルブタジエンスチレン樹
脂、ポリカーボネート樹脂、ポリスチレン樹脂、アクリ
ル樹脂、ポリエステル樹脂などがある。The molten resin 5 includes acrylonitrile styrene resin, acrylonitrile butadiene styrene resin, polycarbonate resin, polystyrene resin, acrylic resin, polyester resin and the like.
【００２２】インサートシート１の基材シートとして低
温熱変形性樹脂層１０と高温変形性樹脂層１１とが積層
されたもの（図１参照）を用いた場合、溶融樹脂５の熱
と圧力とによって、低温熱変形性樹脂層１０のみが、射
出成形金型４の微小凹凸４１に沿って熱変形する。When the base sheet of the insert sheet 1 in which the low temperature heat deformable resin layer 10 and the high temperature deformable resin layer 11 are laminated (see FIG. 1) is used, the heat and pressure of the molten resin 5 cause Only the low temperature heat-deformable resin layer 10 is thermally deformed along the minute irregularities 41 of the injection molding die 4.
【００２３】インサートシート１の基材シートとして高
硬度樹脂層２０、低温熱変形性樹脂層１０、高温変形性
樹脂層１１が積層されたもの（図２参照）を用いた場合
は、つぎのようになる。すなわち、射出成形金型４の微
小凹凸４１の凹凸の高低差が小さいときは、高硬度樹脂
層２０のみが、射出成形金型４の微小凹凸４１に沿って
熱変形する。微小凹凸４１の凹凸の高低差が大きいとき
は、高硬度樹脂層２０と低温熱変形性樹脂層１０とが、
射出成形金型４の微小凹凸４１に沿って熱変形する。When the base sheet of the insert sheet 1 in which the high hardness resin layer 20, the low temperature heat deformable resin layer 10 and the high temperature deformable resin layer 11 are laminated (see FIG. 2) is used, become. That is, when the height difference of the unevenness of the minute unevenness 41 of the injection molding die 4 is small, only the high hardness resin layer 20 is thermally deformed along the minute unevenness 41 of the injection molding die 4. When the height difference of the unevenness of the minute unevenness 41 is large, the high-hardness resin layer 20 and the low-temperature heat-deformable resin layer 10 are
Thermal deformation occurs along the minute irregularities 41 of the injection molding die 4.
【００２４】最後に、溶融樹脂の冷却固化後、射出成形
金型４の型開きを行い、成形品５０の表面がインサート
シート１で覆われたインサート成形品を射出成形金型４
より取り出す（図６参照）。Finally, after the molten resin has been cooled and solidified, the injection molding die 4 is opened, and the insert molded article whose surface is covered with the insert sheet 1 is injected into the injection molding die 4.
Take out more (see FIG. 6).
【００２５】[0025]
実施例１ 低温熱変形性樹脂層として50μｍ厚のアクリルゴムフィ
ルムと、高温熱変形性樹脂層として130μｍ厚のポリカ
ーボネート樹脂フィルムとを積層して基材シートとし、
ポリカーボネート樹脂フィルムにシルクスクリーン印刷
によって絵柄層、接着層を形成し、110℃で5秒間、強制
的にインキ乾燥を行い、プレフォーム用インサートシー
トとした。強制的にインキ乾燥しても、このプレフォー
ム用インサートシートは絵柄層の絵柄は歪んだり、切れ
たり、位置ずれしたりせず、寸法安定性が良好であっ
た。Example 1 A low-temperature heat-deformable resin layer was laminated with a 50 μm thick acrylic rubber film and a high-temperature heat-deformable resin layer was laminated with a 130 μm-thick polycarbonate resin film to form a base sheet.
A pattern layer and an adhesive layer were formed on the polycarbonate resin film by silk screen printing, and the ink was forcibly dried at 110 ° C. for 5 seconds to obtain a preform insert sheet. Even when the ink was forcibly dried, the insert sheet for preform did not distort, cut, or shift the position of the pattern layer, and had good dimensional stability.
【００２６】実施例２ 高温熱変形性樹脂層として130μｍ厚のポリカーボネー
ト樹脂フィルムに、低温熱変形性樹脂層として40μｍ厚
のアクリルゴム樹脂と高硬度樹脂層として10μｍ厚で硬
度２Ｈのメチルメタアクリレート樹脂とを共押出しで積
層して基材シートとし、ポリカーボネート樹脂フィルム
表面に、印刷によって絵柄層を形成し、プレフォーム用
インサートシートとした。このプレフォーム用インサー
トシートを150〜180℃で吸引しながら加熱プレフォーム
した後、キャビティを形成する面に微小凹凸が形成され
た射出成形金型に装着し、アクリロニトリルスチレンか
らなる溶融樹脂を射出して、インサート成形品を得た。
強制的にインキ乾燥しても、このプレフォーム用イン
サートシートは絵柄層の絵柄は歪んだり、切れたり、位
置ずれしたりせず、寸法安定性が良好であった。射出成
形時の微小凹凸の形成も良好で、得られたインサート成
形品も表面硬度の高いものとなった。また、射出成形金
型の微小凹凸は、高硬度樹脂層および低温熱変形性樹脂
層にきれいに形成された。Example 2 A polycarbonate resin film having a thickness of 130 μm as a high temperature heat deformable resin layer, an acrylic rubber resin having a thickness of 40 μm as a low temperature heat deformable resin layer, and a methyl methacrylate resin having a hardness of 2H and a thickness of 10 μm as a high hardness resin layer. And were laminated by coextrusion to form a base sheet, and a pattern layer was formed on the surface of the polycarbonate resin film by printing to obtain an insert sheet for preform. This insert sheet for preform is heated and preformed while sucking at 150 to 180 ° C, then mounted on an injection molding die with minute irregularities formed on the surface that forms the cavity, and a molten resin consisting of acrylonitrile styrene is injected. As a result, an insert molded product was obtained.
Even when the ink was forcibly dried, the insert sheet for preform did not distort, cut, or shift the position of the pattern layer, and had good dimensional stability. The fine irregularities formed during injection molding were also good, and the resulting insert-molded product also had high surface hardness. Further, the fine irregularities of the injection molding die were formed finely in the high hardness resin layer and the low temperature heat deformable resin layer.
【００２７】[0027]
【作用】この発明では、プレフォーム用インサートシー
トのインキ乾燥時には、高温熱変形性樹脂層が低温熱変
形性樹脂層の熱変形を抑制するので、インキ乾燥時のイ
ンサートシートの寸法安定性はよくなる。また、プレフ
ォーム時には、高温熱変形性樹脂層も熱変形し、所望の
成形品の表面形状に沿うように変形する。また、低温熱
変形性樹脂層は熱を十分に吸収するものであるので、溶
融樹脂射出時には、溶融樹脂の接触時間が瞬時であった
としてもよく変形する。According to the present invention, when the ink of the insert sheet for preform is dried, the high temperature heat-deformable resin layer suppresses the heat deformation of the low temperature heat-deformable resin layer, so that the dimensional stability of the insert sheet is improved when the ink is dried. . Moreover, at the time of preforming, the high-temperature heat-deformable resin layer is also thermally deformed and deformed so as to follow the desired surface shape of the molded product. Further, since the low-temperature heat-deformable resin layer sufficiently absorbs heat, it deforms well at the time of injection of the molten resin even if the contact time of the molten resin is instantaneous.
【００２８】[0028]
【発明の効果】この発明は、前記構成および作用からな
るので、次の効果が得られる。すなわち、プレフォーム
用インサートシートは、基材シートの構成として高温熱
変形性樹脂層を含んでいるため、インサートシートのイ
ンキ乾燥時の寸法安定性がよくなる。したがって、イン
キ乾燥時に絵柄層の絵柄などが歪んだり、切れたり、位
置ずれしたりしない。その結果、薄い膜厚のインキでも
厚い膜厚のインキでも絵柄の表現ができるので、印刷法
を自由に選ぶことができるとともに、ボリューム感のあ
る絵柄層や接着層の場合でも高温乾燥で短時間に乾燥さ
せることができ、生産効率がよくなる。Since the present invention has the above-mentioned structure and operation, the following effects can be obtained. That is, since the insert sheet for preform includes the high-temperature heat-deformable resin layer as a constituent of the base sheet, the dimensional stability of the insert sheet when the ink is dried is improved. Therefore, the pattern of the pattern layer is not distorted, cut, or misaligned when the ink is dried. As a result, the pattern can be expressed with either thin or thick ink, so you can freely select the printing method and dry at high temperature for a short time even with a voluminous pattern layer or adhesive layer. It can be dried to improve production efficiency.
【００２９】また、この発明のプレフォーム用インサー
トシートは、基材シートとして低温熱変形性樹脂層を含
んでいるためよく変形する。したがって、射出成形金型
の微小凹凸が基材シート表面に形成できる。The insert sheet for a preform of the present invention includes a low-temperature heat-deformable resin layer as a base material sheet, and therefore deforms well. Therefore, minute irregularities of the injection molding die can be formed on the surface of the base material sheet.
【図１】 この発明のインサートシートの一実施例を示
す断面図である。FIG. 1 is a sectional view showing an embodiment of an insert sheet of the present invention.
【図２】 この発明のインサートシートの一実施例を示
す断面図である。FIG. 2 is a sectional view showing an embodiment of an insert sheet of the present invention.
【図３】 この発明のインサート成形品の製造方法の一
実施例の一工程を示す断面図である。FIG. 3 is a cross-sectional view showing a step in one embodiment of the method for manufacturing an insert-molded product of the present invention.
【図４】 この発明のインサート成形品の製造方法の一
実施例の一工程を示す断面図である。FIG. 4 is a cross-sectional view showing a step in one embodiment of the method for manufacturing an insert-molded product of the present invention.
【図５】 この発明のインサート成形品の製造方法の一
実施例の一工程を示す断面図である。FIG. 5 is a cross-sectional view showing a step in one embodiment of the method for manufacturing an insert-molded product according to the present invention.
【図６】 この発明のインサート成形品の製造方法によ
って得られるインサート成形品を示す断面図である。FIG. 6 is a cross-sectional view showing an insert-molded product obtained by the method for manufacturing an insert-molded product of the present invention.
１ プレフォーム用インサートシート １０ 低温熱変形性樹脂層 １１ 高温熱変形性樹脂層 １２ 絵柄層 １３ 接着層 ２０ 高硬度樹脂層 ４ 射出成形金型 ４０ キャビティ ４１ 微小凹凸 ５ 溶融樹脂 ５０ 成形品 1 Insert Sheet for Preform 10 Low Temperature Heat Deformable Resin Layer 11 High Temperature Heat Deformable Resin Layer 12 Picture Layer 13 Adhesive Layer 20 High Hardness Resin Layer 4 Injection Mold 40 Cavity 41 Micro Asperity 5 Molten Resin 50 Molded Product
Claims (3)
着され、射出成形金型を型閉めすることによって形成さ
れたキャビティ内に溶融樹脂が射出され、溶融樹脂が冷
却固化された後、インサート成形品を射出成形金型より
取り出すインサート成形法で使用されるインサートシー
トにおいて、溶融樹脂射出時に変形する低温熱変形性樹
脂層とインキ乾燥時に変形せず溶融樹脂射出時に変形す
る高温熱変形性樹脂層との積層体からなる基材シートの
高温熱変形性樹脂層上に、少なくとも絵柄層が積層され
ていることを特徴とするインサートシート。1. An insert sheet is mounted in an injection molding die, a molten resin is injected into a cavity formed by closing the injection molding die, the molten resin is cooled and solidified, and then the insert molding is performed. In the insert sheet used in the insert molding method in which the product is taken out from the injection mold, the low temperature heat deformable resin layer that deforms when the molten resin is injected and the high temperature heat deformable resin layer that does not deform when the ink is dried and deforms when the molten resin is injected An insert sheet having at least a pattern layer laminated on a high-temperature heat-deformable resin layer of a base sheet made of a laminate of
温熱変形性樹脂層を積層した面とは反対面に、低温熱変
形性樹脂層よりも高い硬度を有する高硬度樹脂層が積層
されたものである請求項１記載のインサートシート。2. A high-hardness resin layer having a hardness higher than that of the low-temperature heat-deformable resin layer is provided on a surface of the substrate sheet opposite to the surface of the low-temperature heat-deformable resin layer on which the high-temperature heat-deformable resin layer is laminated. The insert sheet according to claim 1, which is laminated.
ートシートと、型閉めされることによって所望の形状の
成形品を得ることができるキャビティを形成するととも
に、キャビティを形成する面にシボなどの微小凹凸が形
成された一対の射出成形金型とを用い、まず、インサー
トシートの絵柄層側に溶融樹脂が射出されるようにイン
サートシートを射出成形金型内に装着し、射出成形金型
を型閉めし、キャビティ内に溶融樹脂を射出し、溶融樹
脂の冷却固化後、インサート成形品を射出成形金型より
取り出すことを特徴とするインサート成形品の製造方
法。3. The insert sheet according to claim 1 or 2, and a cavity for forming a molded article having a desired shape by closing the mold, and forming a cavity or the like on the surface on which the cavity is formed. Using a pair of injection molding dies on which minute irregularities are formed, first insert the insert sheet into the injection molding die so that the molten resin is injected to the pattern layer side of the insert sheet, and then the injection molding die A method for producing an insert-molded product, which comprises closing the mold, injecting a molten resin into the cavity, cooling and solidifying the molten resin, and then taking out the insert-molded product from an injection molding die.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34064093A JP3319641B2 (en) | 1993-12-07 | 1993-12-07 | Manufacturing method of insert sheet and insert molded product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34064093A JP3319641B2 (en) | 1993-12-07 | 1993-12-07 | Manufacturing method of insert sheet and insert molded product |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07156196A true JPH07156196A (en) | 1995-06-20 |
| JP3319641B2 JP3319641B2 (en) | 2002-09-03 |
Family
ID=18338914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34064093A Expired - Lifetime JP3319641B2 (en) | 1993-12-07 | 1993-12-07 | Manufacturing method of insert sheet and insert molded product |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3319641B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003025513A (en) * | 2001-07-12 | 2003-01-29 | Nissha Printing Co Ltd | Laminated sheet and method for manufacturing molded article |
| KR100424352B1 (en) * | 2001-07-20 | 2004-03-24 | 주식회사 모던테크 | A Manufacturing Method of Film for Insert Molding |
| US7371453B2 (en) | 2003-01-08 | 2008-05-13 | Yamaha Hatsudoki Kabushiki Kaisha | Decorative sheet, molded article, and motor vehicle provided with the same |
| JP2019136898A (en) * | 2018-02-08 | 2019-08-22 | パナソニックＩｐマネジメント株式会社 | Method of producing in-mold decorative molded article |
-
1993
- 1993-12-07 JP JP34064093A patent/JP3319641B2/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003025513A (en) * | 2001-07-12 | 2003-01-29 | Nissha Printing Co Ltd | Laminated sheet and method for manufacturing molded article |
| JP4653347B2 (en) * | 2001-07-12 | 2011-03-16 | 日本写真印刷株式会社 | Manufacturing method of laminated sheet and molded product |
| KR100424352B1 (en) * | 2001-07-20 | 2004-03-24 | 주식회사 모던테크 | A Manufacturing Method of Film for Insert Molding |
| US7371453B2 (en) | 2003-01-08 | 2008-05-13 | Yamaha Hatsudoki Kabushiki Kaisha | Decorative sheet, molded article, and motor vehicle provided with the same |
| JP2019136898A (en) * | 2018-02-08 | 2019-08-22 | パナソニックＩｐマネジメント株式会社 | Method of producing in-mold decorative molded article |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3319641B2 (en) | 2002-09-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2130925C (en) | Insert molded article, and apparatus and method for producing the insert molded article | |
| JP4194672B2 (en) | Acrylic insert molding and its manufacturing method, multilayer film for insert molding | |
| JPH02283413A (en) | Injection molding die, in-mold injection molding method using the same and in-mold injection molded container | |
| JP3319641B2 (en) | Manufacturing method of insert sheet and insert molded product | |
| JP2725735B2 (en) | Injection molding simultaneous painting method and painting film used therefor | |
| JPS6144049B2 (en) | ||
| JPH0745147B2 (en) | Painting method | |
| JP3222300B2 (en) | Manufacturing method of insert sheet and insert molded product for preform | |
| JP5061975B2 (en) | Decorative resin molded product manufacturing method and decorative resin molded product | |
| JP2840751B2 (en) | Thermal transfer foil | |
| JP4542667B2 (en) | Method for producing glitter decorative sheet and glitter decorative molded product | |
| JPH0263807A (en) | Manufacture of embossed molded product | |
| JP2837175B2 (en) | Manufacturing method of synthetic resin injection molded products | |
| JPH085096B2 (en) | Manufacturing method for insert sheet for preform and insert molding | |
| JP3180851B2 (en) | Manufacturing method of insert molding die and insert molded product | |
| JPH05329883A (en) | Production of decorative molded object | |
| JP3150804B2 (en) | Manufacturing method of insert molding die and insert molded product | |
| JPH11277568A (en) | Clamping device and manufacture of film-inserted molded product using clamping device | |
| JPH06838A (en) | Manufacture of decorated molded product having grille | |
| JPH05329884A (en) | Production of decorative molded object | |
| JP4346398B2 (en) | Method for manufacturing injection-molded decorative product and injection-molding mold | |
| JP2000263598A (en) | Method for foil decoration simultaneously with injection molding and foil decoration mold therefor | |
| JPH06328498A (en) | Insertion molded item and manufacture thereof | |
| JPH04173140A (en) | Preparation of decorating film and decorative molded product | |
| JPH10202666A (en) | Production of decorated molding |
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: 20020605 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090621 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100621 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110621 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110621 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110621 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120621 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120621 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130621 Year of fee payment: 11 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130621 Year of fee payment: 11 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term |