JP3230047B2 - Manufacturing method of decorative molded products - Google Patents
Manufacturing method of decorative molded productsInfo
- Publication number
- JP3230047B2 JP3230047B2 JP24464696A JP24464696A JP3230047B2 JP 3230047 B2 JP3230047 B2 JP 3230047B2 JP 24464696 A JP24464696 A JP 24464696A JP 24464696 A JP24464696 A JP 24464696A JP 3230047 B2 JP3230047 B2 JP 3230047B2
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- thermoplastic resin
- base
- brushed
- molded article
- 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
Landscapes
- Laminated Bodies (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Moulding By Coating Moulds (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、起毛シートで加飾
された加飾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 a method for producing a decorative molded article decorated with a brushed sheet.
【０００２】[0002]
【従来の技術】熱可塑性樹脂成形品は極めて多くの分野
において使用され、その外観を改良したり、ソフトなイ
メージを付与するために、その表面に各種の表皮材を貼
合することもよく行われている。かかる表皮材の中でも
特に起毛シートで加飾された熱可塑性樹脂成形品は、外
観に優れ、触感も良好で、より高級感が得られるところ
から、内装部品、たとえば自動車のインストルメントパ
ネルやドアトリムなどに多く使用されている。2. Description of the Related Art Thermoplastic resin molded articles are used in a very wide range of fields, and various kinds of skin materials are often adhered to the surface thereof in order to improve the appearance or give a soft image. Have been done. Among such skin materials, especially thermoplastic resin molded products decorated with a brushed sheet are excellent in appearance, good in tactile sensation, and can provide a more luxurious feeling, so that interior parts, such as automobile instrument panels and door trims, etc. Many are used.
【０００３】このような起毛シートで加飾された熱可塑
性樹脂成形品の製造方法としては、予め製造された基材
となる熱可塑性樹脂成形品の表面に接着剤を用いて起毛
シートを接着する方法や、所定の形状からなる雌雄一対
の金型間で、基布にパイル糸がタフティングされてなる
起毛シートの基布側を溶融状熱可塑性樹脂と接触、圧着
させて、基材を成形すると同時に該基材の表面に該シー
トが貼合された成形品を得る方法などが知られている。[0003] As a method of manufacturing a thermoplastic resin molded article decorated with such a brushed sheet, a brushed sheet is bonded to the surface of a thermoplastic resin molded article serving as a base material which has been manufactured in advance by using an adhesive. The base material is formed by contacting and pressing the base cloth side of the brushed sheet, in which pile yarn is tufted to the base cloth, with a molten thermoplastic resin between a pair of male and female molds having a predetermined shape and a method. At the same time, there is known a method of obtaining a molded product in which the sheet is bonded to the surface of the substrate.
【０００４】しかし、前者の方法は予め基材となる熱可
塑性樹脂成形品を製造する工程に加えて、熱可塑性樹脂
成形品の表面に接着剤を塗布する工程、起毛シートを張
り合わせる工程、圧着乾燥させる工程などの一連の接着
工程を必要とし、そのための作業時間も長くなって生産
性に劣り、コスト的にも工業的に有利な製造方法とは言
えないのみならず、得られた成形品についても長期の使
用の間に接着力が低下して接着層から起毛シートが剥離
するなどの問題があった。一方、後者の方法は、基材で
ある熱可塑性樹脂成形品を製造すると同時に起毛シート
をその表面に貼合するという一工程で製品を製造する方
法のため、煩雑な接着工程を必要とせず、時間的にもコ
スト的にも非常に有利であり、また起毛シートも起毛を
構成するパイル糸の末端が基材樹脂中に埋め込まれてア
ンカー効果によって基材樹脂と強固に一体化しているた
め、長期間の使用によっても剥離しにくいなど多くの利
点を有しているが、この方法においては樹脂とシートと
の圧着時に起毛シートが金型面で圧縮されるため、毛倒
れが生じて製品外観が損なわれるという問題があった。However, in the former method, in addition to a step of previously manufacturing a thermoplastic resin molded article as a base material, a step of applying an adhesive to the surface of the thermoplastic resin molded article, a step of bonding a brushed sheet, It requires a series of bonding processes such as a drying process, which requires a long working time, resulting in poor productivity, and is not only an industrially advantageous manufacturing method in terms of cost, but also the obtained molded product Also, there has been a problem that the brushed sheet is peeled off from the adhesive layer due to a decrease in adhesive force during long-term use. On the other hand, the latter method is a method of manufacturing a product in a single step of bonding a brushed sheet to the surface at the same time as manufacturing a thermoplastic resin molded article as a substrate, without requiring a complicated bonding step, It is very advantageous both in terms of time and cost, and also because the ends of the pile yarns constituting the raised sheet are embedded in the base resin and are firmly integrated with the base resin by the anchor effect, Although it has many advantages, such as being difficult to peel off even after long-term use, this method causes the brushed sheet to be compressed by the mold surface when the resin and the sheet are pressed, causing the hair to fall and causing the product appearance There was a problem that was damaged.
【０００５】[0005]
【発明が解決しようとする課題】このようなことから、
本発明者らは起毛シートを溶融状熱可塑性樹脂と接触、
圧着させて、基材を成形すると同時に該基材の表面に該
シートが貼合された成形品を製造する方法の利点をその
まま活かしながら、該方法による毛倒れの問題を解決
し、毛倒れのない外観の良好な起毛シートで加飾された
熱可塑性樹脂成形品を製造する方法について検討の結
果、本発明に至った。SUMMARY OF THE INVENTION
The present inventors contact the brushed sheet with the molten thermoplastic resin,
By pressing and bonding, the substrate is molded, and at the same time, while taking advantage of the method of producing a molded article in which the sheet is bonded to the surface of the substrate, the problem of hair falling due to the method is solved, As a result of studying a method for producing a thermoplastic resin molded article decorated with a brushed sheet having a good appearance, the present invention was achieved.
【０００６】[0006]
【課題を解決するための手段】本発明は、所定の形状か
らなる雌雄一対の金型間で、基布にパイル糸がタフティ
ングされてなる起毛シートの基布側を溶融状熱可塑性樹
脂と接触、圧着させて、熱可塑性樹脂からなる基材を成
形すると同時に該基材の表面に該シートが貼合された成
形品を得、次いで該成形品から起毛シートの基布をパイ
ル糸の起毛方向に剥離することを特徴とする起毛シート
で加飾された加飾成形品の製造方法を提供するものであ
る。SUMMARY OF THE INVENTION The present invention is directed to a brushed sheet in which pile yarn is tufted on a base cloth between a pair of male and female molds having a predetermined shape, and the base cloth side is formed of a molten thermoplastic resin. By contacting and pressing, a base material made of a thermoplastic resin is formed, and at the same time, a molded product in which the sheet is bonded to the surface of the base material is obtained. Then, the base fabric of the raised sheet is raised from the molded product by pile yarn raising. An object of the present invention is to provide a method for producing a decorative molded article decorated with a brushed sheet, which is characterized in that it is peeled in a direction.
【０００７】[0007]
【発明の実施の形態】以下、本発明について具体的に説
明する。本発明において、熱可塑性樹脂からなる基材の
表面に起毛シートが貼合された成形品を製造するための
成形方法それ自体は、所定の形状からなる雌雄一対の金
型間で、表皮材を溶融樹脂と接触、圧着させて、熱可塑
性樹脂からなる基材を成形すると同時に該基材の表面に
表皮材を貼合した成形品を得る方法であれば特に限定さ
れず、たとえば表皮材を供給したのち所定の製品厚みに
なるように両金型を密閉し、密閉された金型空間に溶融
樹脂を射出充填する射出成形、開放された金型間に進退
自在の溶融樹脂供給装置を用いて金型外から溶融樹脂を
供給し、該樹脂の上に表皮材を供給したのち金型を閉じ
るか、予め表皮材を供給したのち該表皮材上に金型外か
ら溶融樹脂を供給し、その後金型を閉じる圧縮成形、表
皮材を雌雄一対からなる未閉鎖の金型間に供給し、表皮
材の裏面側から溶融状熱可塑性樹脂を供給したのちまた
は供給しながら金型を閉じる射出圧縮成形などの従来よ
り公知の種々の成形方法がそのまま適用されるが、得ら
れた成形品の外観、起毛シートの接着性、型締圧に伴う
装置の大きさなどの点で、射出圧縮成形による方法が最
も好ましい。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described specifically. In the present invention, the molding method itself for producing a molded product in which a brushed sheet is bonded to the surface of a base material made of a thermoplastic resin, a pair of male and female molds having a predetermined shape, a skin material is formed. The method is not particularly limited as long as it is a method of obtaining a molded product in which a skin material is bonded to the surface of the base material at the same time as forming a base material made of a thermoplastic resin by contacting and pressing with a molten resin. After that, both molds are sealed so as to have a predetermined product thickness, injection molding to inject molten resin into the sealed mold space, using a molten resin supply device that can advance and retreat between open molds. Supply the molten resin from outside the mold, close the mold after supplying the skin material on the resin, or supply the molten resin from outside the mold onto the skin material after supplying the skin material in advance, and then Compression molding to close the mold, the skin material consists of a pair of male and female Conventionally known various molding methods, such as injection compression molding, in which the molten thermoplastic resin is supplied from the back surface side of the skin material after supplying the molten thermoplastic resin to the chain between the molds or closing the mold while supplying the same, are applied as they are. However, the method of injection compression molding is most preferable in terms of the appearance of the obtained molded product, the adhesiveness of the brushed sheet, the size of the device accompanying the mold clamping pressure, and the like.
【０００８】以下、これらの方法を代表して、射出圧縮
成形法について述べる。図１〜図３にこの方法の概略を
金型の断面略図で示すが、この方法において、基布にパ
イル糸がタフティングされてなる起毛シートが上記の表
皮材に、起毛シートの基布側が表皮材の裏面側にそれぞ
れ相当する。この方法において、起毛シート（３）は雌
雄一対（１，２）からなる未閉鎖の金型間に供給される
（図１）が、その供給方法としては例えば下金型の金型
面上に該シートを載置するように該シートをそのまま金
型間に配置するだけでもよいし、配置されたシートの周
縁部を雌雄いずれかの金型のパーティング面にピン等の
適宜の支持具によって、あるいは独立の支持台に設けた
ピンや適宜の固定枠などの支持具によって部分的もしく
は全面的に固定してもよく、あるいはいずれか一方の金
型面から真空吸引して金型面に密着させて配置してもよ
く、その方法は起毛シートの性質や目的とする製品形状
によって適宜決定される。もちろん、その方法を問わ
ず、起毛シートはその基布側が溶融樹脂と相対するよう
に供給される。Hereinafter, the injection compression molding method will be described as a representative of these methods. FIGS. 1 to 3 schematically show this method in a schematic cross-sectional view of a mold. In this method, a brushed sheet obtained by tufting a pile yarn on a base cloth is attached to the above-mentioned skin material, and the base cloth side of the brushed sheet is used. It corresponds to the back side of the skin material, respectively. In this method, the brushed sheet (3) is supplied between an unclosed mold composed of a pair of male and female (1, 2) (FIG. 1). The sheet may be simply placed between the dies so that the sheet is placed, or the peripheral portion of the placed sheet may be attached to the parting surface of either the male or female mold by a suitable support such as a pin. Alternatively, it may be fixed partially or entirely by a support tool such as a pin provided on an independent support stand or an appropriate fixing frame, or closely attached to the mold surface by vacuum suction from one of the mold surfaces The method may be appropriately determined according to the properties of the brushed sheet and the desired product shape. Of course, regardless of the method, the raised sheet is supplied such that the base fabric side faces the molten resin.
【０００９】金型間に起毛シートを供給したのち、シー
トの基布側と一方の金型の金型面との間に所定量の溶融
樹脂（４）が供給される。（図２） 供給開始時のキャビティクリアランスは金型間が未閉鎖
であること、すなわち目的とする製品厚みよりも広いこ
とが必要であるが、あまりにキャビティクリアランスが
広すぎても良好な製品が得られないため、一般的にはこ
のときの金型間は最終製品厚み（ｍｍ）＋１００（ｍ
ｍ）以下、好ましくは最終製品厚み（ｍｍ）＋５０（ｍ
ｍ）以下である。溶融樹脂は、通常、金型内に設けた溶
融樹脂通路（１０）と連通した金型面に開口する溶融樹
脂供給口から金型間に供給される。After the raised sheet is supplied between the molds, a predetermined amount of molten resin (4) is supplied between the base fabric side of the sheet and the mold surface of one of the molds. (Fig. 2) The cavity clearance at the start of supply needs to be unclosed between the dies, that is, it must be wider than the target product thickness. However, a good product can be obtained even if the cavity clearance is too wide. In general, the gap between the dies at this time is the final product thickness (mm) +100 (m).
m) or less, preferably the final product thickness (mm) +50 (m
m) The molten resin is usually supplied between the molds from a molten resin supply port that opens on a mold surface that communicates with a molten resin passageway (10) provided in the mold.
【００１０】金型間に所定量の溶融樹脂が供給されたの
ち、金型を閉じて所定の製品厚みになるまで型締が行わ
れる。（図３） 型締は、所定量の溶融樹脂の全量が金型間に供給された
のち型締を開始してもよいし、溶融樹脂の供給を行いな
がらこれと平行して型締を行い、溶融樹脂の供給完了と
同時に型締を完了したり、溶融樹脂の供給と型締を平行
に行いつつ溶融樹脂の供給を先に完了し、その後引き続
いて型締を行って型締を完了してもよく、その方法は任
意である。この際、場合によっては、溶融樹脂の供給過
程、あるいは溶融樹脂供給後の型締過程において一時的
に金型を僅かに開いたり、溶融樹脂供給後の保圧条件を
変えながら型締を完了してもよい。型締完了後、樹脂を
冷却し、金型を開いて成形品を取り出すと、熱可塑性樹
脂からなる基材の表面に起毛シートがその表面に貼合さ
れた熱可塑性樹脂樹脂を基材（１１）とする成形品が得
られる。After a predetermined amount of molten resin is supplied between the molds, the molds are closed and the mold is clamped until a predetermined product thickness is obtained. (Fig. 3) The mold clamping may be started after a predetermined amount of the molten resin is supplied between the molds, or may be performed in parallel with the supply of the molten resin. The mold clamping is completed simultaneously with the completion of the supply of the molten resin, or the supply of the molten resin is completed first while the supply of the molten resin and the mold clamping are performed in parallel, and subsequently the mold clamping is performed to complete the mold clamping. And the method is arbitrary. At this time, in some cases, the mold is temporarily opened slightly during the supply process of the molten resin or the mold clamping process after the supply of the molten resin, or the mold clamping is completed while changing the pressure holding conditions after the supply of the molten resin. You may. After completion of the mold clamping, the resin is cooled, the mold is opened, and the molded product is taken out. When the brushed sheet is adhered to the surface of the thermoplastic resin substrate on the surface of the thermoplastic resin substrate, the substrate (11) )).
【００１１】このような方法により、起毛シートの基布
裏側のパイル糸端（５）が基材表面部の溶融樹脂中に埋
め込まれ、そのアンカー効果によって起毛シートが基材
表面に強固に貼合一体化された成形品が得ることができ
る。しかし、このようにして得られた成形品は、その表
面状態を図４にその部分拡大図で示すように、表面の起
毛シートの立毛部であるパイル糸（６）が成形時の型締
による圧縮により毛倒れを生じているため、この毛倒れ
を起こし、原料として使用した起毛シートの良好な外観
や風合いを損なわないようにする必要がある。本発明の
最も重要な特徴は、このような方法により製造された成
形品から起毛シートの基布をパイル糸の起毛方向に剥離
し（図５）、これにより毛倒れしたパイル糸を起こして
起毛シートで加飾した良好な外観、風合いを有する加飾
成形品を得ることにある。According to such a method, the pile yarn end (5) on the back side of the base fabric of the brushed sheet is embedded in the molten resin on the surface of the base material, and the brushed sheet is firmly bonded to the base material surface by the anchor effect. An integrated molded product can be obtained. However, in the molded article thus obtained, the surface state is shown in a partially enlarged view of FIG. 4, and the pile yarn (6), which is the raised portion of the brushed sheet on the surface, is subjected to mold clamping during molding. Since the hair has fallen due to the compression, it is necessary to prevent the hair from falling and impair the good appearance and texture of the brushed sheet used as a raw material. The most important feature of the present invention is that the base fabric of the brushed sheet is peeled off from the molded article manufactured by such a method in the direction in which pile yarns are raised (FIG. 5). An object of the present invention is to obtain a decorative molded product having a good appearance and texture decorated with a sheet.
【００１２】ここで、本発明に適用される起毛シートと
は、基布（７）にパイル糸（６）がタフティングされて
なるものであって、基布としてはパイル糸がタフティン
グされるものであれば特に限定されず、天然または合成
繊維からなる各種の織物、編物などや、各種合成樹脂製
フィルムもしくはシートなどが使用され、該基布の層構
成としてはこれら単独であってもよいし、図６に示すよ
うに織物や編物（８）と合成樹脂製フィルムもしくはシ
ート（９）との２層構造、ないしは図７に示すように織
物や編物（８）を中間層としてその両側を合成樹脂製フ
ィルムもしくはシート（９）で挟んだサンドイッチ構造
であってもよい。しかし、本発明においては成形過程に
おいて原料起毛シートの基布裏面のパイル糸を溶融樹脂
と接着させ、基布はその後剥離するものであるから、か
かる基布が単層構造からなる場合には溶融樹脂との接着
性に乏しくその後の剥離が容易であることが好ましく、
かかる観点から繊維間に溶融樹脂が入り込み易い織物や
編物よりも合成樹脂フィルムやシートがより好ましく使
用され、とりわけ、使用される熱可塑性樹脂と非接着性
ないしは難接着性の合成樹脂フィルムやシートが好まし
く使用される。Here, the brushed sheet applied to the present invention is formed by tufting a pile yarn (6) on a base cloth (7), and a pile yarn is tufted as the base cloth. It is not particularly limited as long as it is a material, and various woven fabrics and knits made of natural or synthetic fibers, various synthetic resin films or sheets, and the like are used, and the base fabric may have a single layer structure. Then, as shown in FIG. 6, a two-layer structure of a woven or knitted fabric (8) and a synthetic resin film or sheet (9), or as shown in FIG. It may have a sandwich structure sandwiched between synthetic resin films or sheets (9). However, in the present invention, the pile yarns on the back surface of the base cloth of the raw material raised sheet are adhered to the molten resin in the forming process, and the base cloth is subsequently peeled off. It is preferable that the adhesion to the resin is poor and subsequent peeling is easy,
From such a viewpoint, a synthetic resin film or sheet is more preferably used than a woven or knitted fabric in which a molten resin easily enters between fibers, and in particular, a synthetic resin film or sheet that is non-adhesive or hardly adherent to a thermoplastic resin used. It is preferably used.
【００１３】また、かかる基布の構成において織物や編
物と合成樹脂製フィルムもしくはシートとの２層構造と
する場合には、基布の最裏面を織物や編物からなる層と
してその上面（立毛側）を合成樹脂製フィルムもしくは
シートとし、かつ両層を強固に接着することなく、場合
によっては特別の接着操作を行うことなく単に重ね合わ
せる程度のものであってもよい。同様に、合成樹脂製フ
ィルムもしくはシートで織物や編物をサンドイッチ状に
挟んだ３層構造の場合も、最上層と中間層である織物や
編物とは両層を強固に接着することなく、場合によって
は特別の接着操作を行うことなく単に重ね合わせる程度
とすることが好ましい。しかし、この場合の最下層と中
間層である織物や編物は強固に接着されていてもよい
し、接着性が低くてもよく、また、最下層の合成樹脂製
フィルムもしくはシートは基材となる熱可塑性樹脂との
接着性がすぐれていてもよい。このような場合には、た
とえば上記した２層構造の場合には、パイル糸端および
基布の最下層の織物や編物は基材である熱可塑性樹脂層
と接着するが、基布の上層である合成樹脂製フィルムも
しくはシートはその後容易に剥離することができ、同様
に３層構造の場合には各層の材料や接着性を選択するこ
とによって、任意の層間で剥離することができる。In the case of a two-layer structure composed of a woven or knitted fabric and a synthetic resin film or sheet in the construction of the base fabric, the lowermost surface of the base fabric is formed as a layer made of a woven or knitted fabric and its upper surface (the napping side). ) May be a film or sheet made of a synthetic resin, and the two layers may be simply overlapped without firmly adhering them and, in some cases, without performing a special adhering operation. Similarly, in the case of a three-layer structure in which a woven or knitted fabric is sandwiched between synthetic resin films or sheets, the uppermost layer and the woven or knitted fabric as the intermediate layer do not adhere firmly to both layers, and in some cases, It is preferable that they are merely superimposed without special bonding operation. However, in this case, the lowermost layer and the intermediate layer, the woven or knitted material, may be firmly bonded or may have low adhesiveness, and the lowermost layer of the synthetic resin film or sheet may be the base material. The adhesiveness with a thermoplastic resin may be excellent. In such a case, for example, in the case of the above-described two-layer structure, the woven fabric or knitted fabric at the pile yarn end and the lowermost layer of the base cloth adheres to the thermoplastic resin layer as the base material, but the upper layer of the base cloth A certain synthetic resin film or sheet can be easily peeled thereafter, and similarly in the case of a three-layer structure, it can be peeled between arbitrary layers by selecting the material and adhesiveness of each layer.
【００１４】いずれにしろ、本発明は、その成形過程に
おいて原料起毛シートの基布裏面のパイル糸端を溶融樹
脂と接着させ、基布はその後基材樹脂から剥離するもの
であるから、基布が１層のみから構成されている場合に
は該基布がそのまま剥離されることが必要であるが、基
布が上記したような２層以上から構成されている場合に
は必ずしも基布全体が剥離される必要はなく、基布を構
成している各層の内の少なくとも１層が他の層から剥離
されればよく、本発明における基布の剥離とはその目的
に照らして、このような基布を構成している一部の層の
みが剥離される場合も含むものである。In any case, according to the present invention, in the forming process, the pile yarn end on the back side of the base cloth of the raw brushed sheet is adhered to the molten resin, and the base cloth is subsequently separated from the base resin. When the base cloth is composed of only one layer, it is necessary that the base cloth be peeled off as it is, but when the base cloth is composed of two or more layers as described above, the entire base cloth is not necessarily required. It is not necessary to be peeled, and it is sufficient that at least one of the layers constituting the base fabric is peeled from the other layers. This includes the case where only some of the layers constituting the base fabric are peeled off.
【００１５】また、本発明の方法において、このような
起毛シートを金型間に供給するにあたり、起毛シートの
基布裏面を熱可塑性樹脂に対して非溶解性の溶剤で予め
湿潤させておくことも有効である。ここで、湿潤とは厳
密な意味ではなく、基布を構成する材料繊維の繊維間の
空隙が溶剤で満されている場合はもちろん、基布が繊維
質あるいは非繊維質であるを問わず、単にその表面に溶
剤が付着しているような場合も含むものである。また、
この場合に基布裏面に突き出し、溶融樹脂と接着される
部分のパイル糸端や基布表面側の起毛部分が同時に湿潤
されていても何ら差し支えないし、通常は、作業上から
該パイル糸端とともに基布裏面が湿潤されることが多
い。In the method of the present invention, when supplying such a raised sheet between molds, the back surface of the base fabric of the raised sheet is wetted in advance with a solvent insoluble in a thermoplastic resin. Is also effective. Here, wetting is not strictly meaning, regardless of whether the base fabric is fibrous or non-fibrous, not only when the voids between the fibers of the material fibers constituting the base fabric are filled with a solvent, This includes the case where the solvent is simply attached to the surface. Also,
In this case, there is no problem even if the pile yarn end of the portion that sticks out to the back surface of the base fabric and is adhered to the molten resin or the raised portion of the base fabric surface side is simultaneously moistened. The back surface of the base fabric is often wetted.
【００１６】湿潤方法は特に限定されず、起毛シート全
体あるいはその基布裏面側を溶剤中に浸漬したり、起毛
シートの基布裏面側に溶剤を塗布したりスプレー等によ
り噴霧するなどの通常行われている任意の方法で行うこ
とができるが、塗布あるいはスプレー法が一般的であ
る。The wetting method is not particularly limited, and is usually carried out by immersing the entire brushed sheet or the back side of the base fabric in a solvent, applying a solvent to the back side of the base fabric of the brushed sheet, or spraying with a spray or the like. It can be carried out by any known method, but a coating or spraying method is generally used.
【００１７】起毛シートの基布裏面を溶剤で湿潤するこ
とにより、起毛シートの基布裏側に突き出しているパイ
ル糸端は溶融樹脂中に埋め込まれて樹脂と接着される
が、基布部分と接触する溶融樹脂の表面は該溶剤の気化
熱で冷却されてスキン層が形成されるため、平面的な基
布と溶融樹脂とは接着されなかったり部分的に接着され
ても全体としてその接着力が小さいため、成形後におい
て基布を基材表面から剥離することができる。このよう
な目的で使用される溶剤は、供給される熱可塑性樹脂に
対して非溶解性であり、溶融樹脂の樹脂温度において比
較的蒸発性が高ければ特に制限されないが、溶剤の蒸発
気体による衛生問題、環境問題などから水系溶剤、たと
えば水や、水を主成分とする水−アルコール（たとえば
エタノール）混合溶媒が好ましく、特に水が好ましく使
用される。このような水系溶剤で起毛シートの基布裏面
を予め湿潤させる場合には、該シートの基布を構成する
材料は織物や編物であってもよいし、合成樹脂フィルム
やシートであってもよいが、水系溶剤と馴染み易い織物
や編物の場合に適用されることが多い。この場合、水系
溶剤の使用量は特に制限されないが、パイル糸部分にま
で多量の溶剤が含まれない程度であり、また、湿潤させ
る基布が合成樹脂フィルムやシートの場合には、その表
面から水滴等が落下しない程度である。By wetting the back surface of the base fabric of the brushed sheet with a solvent, the pile yarn end protruding to the back side of the base fabric of the brushed sheet is embedded in the molten resin and adhered to the resin. Since the surface of the molten resin to be cooled is cooled by the heat of vaporization of the solvent to form a skin layer, even if the planar base fabric and the molten resin are not adhered or partially adhered, the adhesive strength as a whole is reduced. Because it is small, the base fabric can be peeled from the surface of the base material after molding. The solvent used for such a purpose is not particularly limited as long as it is insoluble in the supplied thermoplastic resin and has relatively high evaporability at the resin temperature of the molten resin. From the viewpoints of problems, environmental problems, and the like, an aqueous solvent such as water or a mixed solvent of water-alcohol (eg, ethanol) containing water as a main component is preferable, and water is particularly preferably used. When the back surface of the base fabric of the brushed sheet is wetted in advance with such an aqueous solvent, the material constituting the base fabric of the sheet may be a woven or knitted fabric, or may be a synthetic resin film or sheet. However, it is often applied to fabrics and knits that are easily compatible with aqueous solvents. In this case, the amount of the aqueous solvent used is not particularly limited, but is such that a large amount of the solvent is not contained in the pile yarn portion. It is to the extent that water drops do not fall.
【００１８】このような起毛シートにおいて、基布の構
成が１層からなる場合、その厚みはパイル糸のタフティ
ングが可能であって、起毛シートとしての形状が維持で
き、かつ剥離時において起毛部分により容易に引き裂か
れる程度であって、具体的には個々の材料特性に応じて
決定される。また、基布の構成が２層以上からなる場合
には、剥離される層部分が起毛部分により容易に引き裂
かれる程度の厚みとされる。例えば、基布を織物あるい
は編物と合成樹脂フィルムもしくはシートとの２層構造
とし、パイル糸のタフティングを実質上織物あるいは編
物で行う場合には、合成樹脂フィルムもしくはシートの
厚みは、該フィルムもしくはシートが起毛部分により容
易に引き裂かれながら剥離できる程度であればよい。In such a brushed sheet, when the structure of the base fabric is composed of one layer, the thickness is such that the pile yarn can be tufted, the shape as the brushed sheet can be maintained, and the brushed portion is formed at the time of peeling. To the extent that it is more easily torn, and is specifically determined according to individual material properties. When the structure of the base cloth is composed of two or more layers, the thickness of the layer portion to be peeled is set to such a degree that the layer portion is easily torn by the raised portion. For example, when the base fabric has a two-layer structure of a woven or knitted fabric and a synthetic resin film or sheet, and the tufting of the pile yarn is performed substantially by a woven or knitted fabric, the thickness of the synthetic resin film or sheet is determined by the thickness of the film or sheet. It is sufficient that the sheet can be peeled off while being easily torn by the raised portion.
【００１９】本発明は、このようにして得られた起毛シ
ートが貼合された成形品から起毛シートの基布をパイル
糸の起毛方向に剥離するものであるが、剥離は図７に示
すように毛倒れ方向とは逆の方向に、毛倒れした起毛部
を引き起こすように基布を引き上げながら行われる。こ
の際、剥離する基布の種類によっては、あるいは起毛部
がループ状である場合には剥離すべき基布を起毛部であ
るパイル糸の付け根部分で破りながら行われる。この
際、基布の剥離により引き起こされた起毛部が再度毛倒
れするのを防止するために、剥離に先立って、あるいは
剥離時の起毛部に適度な湿度や温度を与えることは有効
である。According to the present invention, the base fabric of the brushed sheet is peeled from the molded product to which the brushed sheet thus obtained is pasted in the pile fiber raising direction. The peeling is as shown in FIG. This is performed while pulling up the base cloth in a direction opposite to the hair falling direction so as to cause the raised portion of the hair to fall. In this case, depending on the type of the base fabric to be peeled, or when the raised portion is in a loop shape, the peeling is performed while tearing the base fabric to be peeled at the base of the pile yarn as the raised portion. At this time, in order to prevent the raised portion caused by the peeling of the base fabric from falling down again, it is effective to apply an appropriate humidity or temperature to the raised portion prior to or during peeling.
【００２０】かかる本発明の方法により、成形時の型締
による圧縮により毛倒れした表皮材である起毛シートの
起毛部が、基布の剥離によって引き起こされてもとの起
毛状態に復元され、毛倒れのない起毛シートで加飾され
た加飾成形品を容易に得ることができる。According to the method of the present invention, the raised portion of the raised sheet, which is a skin material that has fallen down by compression due to mold clamping during molding, is restored to the original raised state caused by peeling of the base cloth. A decorative molded article decorated with a brushed sheet that does not fall can be easily obtained.
【００２１】本発明の加飾成形品を製造するための熱可
塑性樹脂としては、従来よりこの分野で使用されている
樹脂が使用されて特に限定されず、たとえばポリエチレ
ン系樹脂やポリプロピレン系樹脂などのポリオレフィン
系樹脂、塩化ビニル系樹脂、ポリアミド樹脂、アクリロ
ニトエル・ブタジエン系樹脂、エチレン・プロピレン・
ジエン共重合体樹脂やこれとゴム成分からなる熱可塑性
エラストマー、これらの混合物などが使用される。As the thermoplastic resin for producing the decorative molded article of the present invention, resins conventionally used in this field are used and are not particularly limited. For example, polyethylene resins and polypropylene resins are used. Polyolefin resin, vinyl chloride resin, polyamide resin, acrylonitrile butadiene resin, ethylene propylene
A diene copolymer resin, a thermoplastic elastomer composed of the diene copolymer resin and a rubber component, a mixture thereof and the like are used.
【００２２】[0022]
【発明の効果】本発明の方法によれば、起毛シートを溶
融状熱可塑性樹脂と接触、圧着させて、基材を成形する
と同時に該基材の表面に該シートが貼合された成形品を
製造する方法の利点をそのまま活かしながら、該方法に
よる毛倒れの問題を解決し、毛倒れのない外観の良好な
起毛シートで加飾された熱可塑性樹脂成形品を製造する
ことができる。According to the method of the present invention, a brushed sheet is brought into contact with a molten thermoplastic resin and pressed to form a substrate, and at the same time, a molded article having the sheet bonded to the surface of the substrate is formed. While taking advantage of the manufacturing method as it is, the problem of hair falling by the method can be solved, and a thermoplastic resin molded article decorated with a brushed sheet having good appearance without hair falling can be manufactured.
【図１】本発明の加飾成形品の製造方法を金型部の概略
断面図で示したものである。FIG. 1 is a schematic sectional view of a mold part showing a method for producing a decorative molded product of the present invention.
【図２】本発明の加飾成形品の製造方法を金型部の概略
断面図で示したものである。FIG. 2 is a schematic cross-sectional view of a mold part illustrating the method for manufacturing a decorative molded product of the present invention.
【図３】本発明の加飾成形品の製造方法を金型部の概略
断面図で示したものである。FIG. 3 is a schematic cross-sectional view of a mold part illustrating the method for manufacturing a decorative molded product of the present invention.
【図４】成形終了後の成形品表面の毛倒れ状態を示す。FIG. 4 shows a hair falling state on the surface of a molded product after completion of molding.
【図５】図４に示すその表面が毛倒れした成形品から、
毛倒れ部を引き起こすように基布を矢印方向に剥離して
いる状態状態を示す。FIG. 5 shows a molded product whose surface has fallen as shown in FIG.
The state in which the base cloth is peeled off in the direction of the arrow so as to cause a hair falling part is shown.
【図６】本発明に適用される起毛シートの基布の構成を
示す例である。FIG. 6 is an example showing a configuration of a base fabric of a brushed sheet applied to the present invention.
【図７】本発明に適用される起毛シートの基布の構成を
示す例である。FIG. 7 is an example showing a configuration of a base fabric of a brushed sheet applied to the present invention.
１：雌金型 ２：雄金型 ３：起毛シート ４：溶融樹脂 ５：パイル糸端 ６：パイル糸 ７：起毛シートの基布 ８：織物（編
物） ９：合成樹脂フィルム（シート） １０：溶融樹脂通
路 １１：基材1: female mold 2: male mold 3: brushed sheet 4: molten resin 5: pile thread end 6: pile thread 7: base fabric of brushed sheet 8: woven fabric (knitted fabric) 9: synthetic resin film (sheet) 10: Molten resin passage 11: substrate
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ // Ｂ２９Ｋ 101:12 Ｂ２９Ｋ 101:12 105:08 105:08 Ｂ２９Ｌ 9:00 Ｂ２９Ｌ 9:00 (72)発明者 神地 裕二 三重県三重郡菰野町大字大強原字狐塚 2500番地１日泉化学株式会社内 (72)発明者 中塚 博雅 三重県三重郡菰野町大字大強原字狐塚 2500番地１日泉化学株式会社内 (56)参考文献 特開 平４−238754（ＪＰ，Ａ) 特開 昭59−118538（ＪＰ，Ａ) 特開 平４−66340（ＪＰ，Ａ) 特開 昭47−11338（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) B29C 43/18 - 43/20 B29C 43/32 - 43/34 B29C 45/14,45/70 B60N 3/04 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification code FI // B29K 101: 12 B29K 101: 12 105: 08 105: 08 B29L 9:00 B29L 9:00 (72) Inventor Yuji Kamichi 2500, 1-day Izumi Chemical Co., Ltd. 56) References JP-A-4-238754 (JP, A) JP-A-59-118538 (JP, A) JP-A-4-66340 (JP, A) JP-A-47-11338 (JP, A) (58) ) Surveyed field (Int.Cl. 7 , DB name) B29C 43/18-43/20 B29C 43/32-43/34 B29C 45 / 14,45 / 70 B60N 3/04
Claims (6)
基布にパイル糸がタフティングされてなる起毛シートの
基布側を溶融状熱可塑性樹脂と接触、圧着させて、熱可
塑性樹脂からなる基材を成形すると同時に該基材の表面
に該シートが貼合された成形品を得、次いで該成形品か
ら起毛シートの基布をパイル糸の起毛方向に剥離するこ
とを特徴とする起毛シートで加飾された加飾成形品の製
造方法。1. A pair of male and female molds having a predetermined shape,
The base cloth side of the brushed sheet in which pile yarns are tufted on the base cloth is brought into contact with and fused with the molten thermoplastic resin to form a base made of the thermoplastic resin, and at the same time, the sheet is formed on the surface of the base. A method for producing a decorative molded article decorated with a brushed sheet, comprising obtaining a bonded molded article, and then peeling a base fabric of the brushed sheet from the molded article in a direction in which pile yarns are raised.
起毛シートを雌雄一対からなる未閉鎖の金型間に供給
し、該シートの基布側から溶融状熱可塑性樹脂を供給し
たのちまたは供給しながら金型を閉じ、冷却したのち金
型を開いて熱可塑性樹脂からなる基材の表面に該シート
が貼合された成形品を得、次いで該成形品から起毛シー
トの基布をパイル糸の起毛方向に剥離することを特徴と
する起毛シートで加飾された加飾成形品の製造方法。2. A brushed sheet in which pile yarn is tufted on a base cloth is supplied between an unclosed mold composed of a pair of male and female, and a molten thermoplastic resin is supplied from the base cloth side of the sheet. The mold is closed while being supplied, and after cooling, the mold is opened to obtain a molded product in which the sheet is bonded to the surface of a substrate made of a thermoplastic resin, and then a base fabric of a brushed sheet is piled from the molded product. A method for producing a decorative molded article decorated with a brushed sheet, wherein the decorative molded article is peeled in a direction in which the yarn is raised.
トである請求項１または２に記載の加飾成形品の製造方
法。3. A method of manufacturing the decorative molded article according to claim 1 or 2 is a base fabric thermoplastic resin film or sheet.
基材である熱可塑性樹脂と非接着性または難接着性の材
料から形成されてなる請求項３に記載の加飾成形品の製
造方法。4. A film or sheet made of a thermoplastic resin,
4. The method for producing a decorative molded product according to claim 3, wherein the decorative molded product is formed of a non-adhesive or poorly-adhesive material with a thermoplastic resin as a base material.
を、供給する熱可塑性樹脂に対して非溶解性の溶剤で予
め湿潤させてなる請求項１または２に記載の加飾成形品
の製造方法。5. The decorative molding according to claim 1, wherein the back side of the raised sheet supplied between the dies is pre-wetted with a solvent insoluble in the thermoplastic resin to be supplied. Product manufacturing method.
飾成形品の製造方法。6. The method for producing a decorative molded product according to claim 5, wherein the solvent is an aqueous solvent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24464696A JP3230047B2 (en) | 1996-09-17 | 1996-09-17 | Manufacturing method of decorative molded products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24464696A JP3230047B2 (en) | 1996-09-17 | 1996-09-17 | Manufacturing method of decorative molded products |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1086164A JPH1086164A (en) | 1998-04-07 |
| JP3230047B2 true JP3230047B2 (en) | 2001-11-19 |
Family
ID=17121852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24464696A Expired - Fee Related JP3230047B2 (en) | 1996-09-17 | 1996-09-17 | Manufacturing method of decorative molded products |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3230047B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6523806B2 (en) * | 2015-06-11 | 2019-06-05 | 株式会社クラレ | Method of manufacturing a decorated molding |
-
1996
- 1996-09-17 JP JP24464696A patent/JP3230047B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH1086164A (en) | 1998-04-07 |
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