JP2002254469A - Resin injection-molded item having core for reinforcement or design - Google Patents
Resin injection-molded item having core for reinforcement or designInfo
- Publication number
- JP2002254469A JP2002254469A JP2001393485A JP2001393485A JP2002254469A JP 2002254469 A JP2002254469 A JP 2002254469A JP 2001393485 A JP2001393485 A JP 2001393485A JP 2001393485 A JP2001393485 A JP 2001393485A JP 2002254469 A JP2002254469 A JP 2002254469A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- core material
- skin layer
- design
- fiber
- 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.)
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- Injection Moulding Of Plastics Or The Like (AREA)
- Telephone Set Structure (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、樹脂成形体に係
り、特に突出構造部を有しかつ薄肉の電子機器筐体を強
度を保ちながらさらに薄肉化することを可能にした内部
補強構造を有する樹脂射出成形体に関する。また、本発
明は意匠目的でコア層を含み多品種少量生産に好適な樹
脂射出成形体を提供する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin molded product, and more particularly to an internal reinforcing structure having a projecting structure and enabling a thin electronic device housing to be further reduced in thickness while maintaining strength. The present invention relates to a resin injection molded article. In addition, the present invention provides a resin injection molded article including a core layer for design purposes and suitable for high-mix low-volume production.
【０００２】[0002]
【従来の技術】携帯電話、パソコンなどの小型電子機器
の筐体は、ねじ止め用ボスやスライド式止め構造、ある
いは電池収容部の仕切りなどに、筐体本体の樹脂外壁か
ら突出した構造部を有しているので、複雑な形状をして
おり、成形法も制約されるものであるが、例えば、特に
携帯電話の小型軽量化に伴い、現在携帯電話の１０×４
ｃｍ程度の寸法では０．８〜１．２ｍｍ程度の肉厚のＡ
ＢＳ樹脂、ポリカーボネート樹脂製の筐体が主流であ
り、マグネシウム製の筐体も用いられている。2. Description of the Related Art The housing of a small electronic device such as a mobile phone or a personal computer is provided with a structure projecting from a resin outer wall of the housing main body such as a boss for screwing or a slide-type stopping structure, or a partition for a battery housing. Therefore, the shape is complicated, and the molding method is also restricted.
A with a thickness of about 0.8 to 1.2 mm for dimensions of about cm
A casing made of BS resin or polycarbonate resin is mainly used, and a casing made of magnesium is also used.
【０００３】[0003]
【発明が解決しようとする課題】しかし、樹脂製の筐体
では、携帯電話の１０×４ｃｍ程度の寸法を有する場
合、約０．８ｍｍの肉厚の製品では強度的に必ずしも十
分であるとは言いがたく、またこれ以上薄くすることは
より難しいという問題がある。However, in a case made of resin, if a mobile phone has a size of about 10 × 4 cm, a product having a thickness of about 0.8 mm is not necessarily sufficient in strength. There is a problem that it is hard to say and it is more difficult to make it thinner.
【０００４】また、今後携帯電話においても大画面化に
伴う面積拡大と、薄型化が進むことが予想され、現状と
同等の０．８mmから１．２mmの肉厚の筐体であっても、
これまで以上に、高弾性化、高強度化の要求が進むこと
が予想されている。[0004] In the future, it is expected that the area of the mobile phone will be increased due to the increase in screen size and the thickness of the mobile phone will be reduced.
It is expected that demands for higher elasticity and higher strength will be more advanced than ever.
【０００５】一方、マグネシウム製では強度的には０．
８ｍｍより薄くすることは可能であるが、歩留りが悪
く、また後処理が必要なのでコストの問題がある。[0005] On the other hand, in the case of magnesium, the strength is 0.1 mm.
Although it is possible to make it thinner than 8 mm, there is a problem of cost because the yield is low and post-processing is required.
【０００６】そこで、本発明は、このような軽量小型、
すなわち、より薄肉でありながら、強度を維持した補強
構造をもつ樹脂成形体を提供することを目的とするもの
である。Accordingly, the present invention provides such a lightweight and compact device.
That is, an object of the present invention is to provide a resin molded body having a reinforcing structure which maintains strength while being thinner.
【０００７】また、上記のような樹脂製の筐体では、携
帯電話などの個性化（パーソナルユース）の進行に対応
して多種類のデザインを低コストで実現することが求め
られているが、デザイン数を大量化すると各生産ライン
における生産数が減少するので低コストで製造すること
ができないという問題がある。印刷法によれば所望のデ
ザインを簡単に得ることができるが、耐久性が低いのみ
ならず、コストの増加をもたらす。Further, in the case of the resin made as described above, it is required to realize various kinds of designs at low cost in response to the progress of personalization (personal use) of a mobile phone or the like. When the number of designs is increased, the number of products in each production line is reduced, so that there is a problem that it is not possible to manufacture at low cost. According to the printing method, a desired design can be easily obtained, but not only the durability is low but also the cost is increased.
【０００８】そこで、本発明は、デザインの個性化と費
用効果の両方を満足し、かつデザインの種類を拡大でき
る、印刷などのデザインを施したコアを有する樹脂成形
体を提供することをもう１つの目的とするものである。Accordingly, the present invention has another object to provide a resin molded product having a core designed with printing or the like, which satisfies both the individualization of the design and the cost-effectiveness and can expand the kinds of designs. One purpose.
【０００９】[0009]
【課題を解決するための手段】本発明は、鋭意検討した
結果、炭素繊維クロスの如き二次元補強コア材料を樹脂
射出成形体の補強材として用いることにより、また意匠
を施した可撓性のコア材料を樹脂射出成形体のコア材料
として用いることにより、上記の目的を達成することが
可能であることを見出したものである。本発明は特に下
記を提供する。According to the present invention, as a result of diligent studies, the use of a two-dimensional reinforcing core material such as a carbon fiber cloth as a reinforcing material for a resin injection molded article, and the design of a flexible It has been found that the above object can be achieved by using a core material as a core material of a resin injection molded article. The invention particularly provides:
【００１０】（１）非平面状に成形された二次元補強コ
ア材料と、該コア材料の表面を覆う樹脂表皮層と、該樹
脂表皮層と一体に形成されかつ樹脂表皮層から突出した
樹脂製構造部とを少なくとも有し、該樹脂表皮層と該構
造部は射出成形法で一体成形されたものであることを特
徴とする樹脂成形体。(1) A non-planar two-dimensional reinforcing core material, a resin skin layer covering the surface of the core material, and a resin formed integrally with the resin skin layer and protruding from the resin skin layer. A resin molded article having at least a structural part, wherein the resin skin layer and the structural part are integrally molded by an injection molding method.
【００１１】（２）前記二次元補強コア材料が織物、編
物などの繊維材料またはそれに樹脂を含浸した繊維材料
である（１）の樹脂成形体。(2) The resin molded article according to (1), wherein the two-dimensional reinforcing core material is a fiber material such as a woven fabric or a knitted fabric or a fiber material impregnated with a resin.
【００１２】（３）前記繊維材料が炭素繊維、ガラス繊
維、アラミド繊維から選ばれるものである（２）の樹脂
成形体。(3) The resin molded article according to (2), wherein the fiber material is selected from carbon fiber, glass fiber and aramid fiber.
【００１３】（４）前記繊維材料がナイロン、ポリエス
テルなどの合成繊維または麻、綿などの天然繊維から選
ばれるものである（２）の樹脂成形体。(4) The resin molded article according to (2), wherein the fiber material is selected from synthetic fibers such as nylon and polyester or natural fibers such as hemp and cotton.
【００１４】（５）前記繊維材料が金属繊維を含むもの
である（２）〜（４）の樹脂体。(5) The resin body according to (2) to (4), wherein the fiber material contains metal fibers.
【００１５】（６）前記繊維材料が繊維材料に熱可塑性
樹脂を含浸したものである（１）〜（５）に記載の樹脂
成形体。(6) The resin molded article according to any one of (1) to (5), wherein the fibrous material is obtained by impregnating a fibrous material with a thermoplastic resin.
【００１６】（７）前記熱可塑性樹脂がアクリル樹脂、
ポリアミド樹脂、ポリエステル樹脂、ポリプロピレン樹
脂、ＡＢＳ樹脂、ポリカーボネート樹脂、ポリプロピレ
ンエチレン樹脂、これらの変性体または混合体である
（６）の樹脂成形体。(7) The thermoplastic resin is an acrylic resin,
The resin molded product of (6), which is a polyamide resin, a polyester resin, a polypropylene resin, an ABS resin, a polycarbonate resin, a polypropylene ethylene resin, or a modified product or a mixture thereof.
【００１７】（８）前記樹脂表皮層と前記繊維材料含浸
樹脂とが同一材料からなる（１）〜（７）の樹脂成形
体。(8) The resin molded product according to any one of (1) to (7), wherein the resin skin layer and the fiber material-impregnated resin are made of the same material.
【００１８】（９）前記樹脂表皮層の少なくとも一部が
透明樹脂層である（１）〜（８）の樹脂成形体。(9) The resin molded article according to any one of (1) to (8), wherein at least a part of the resin skin layer is a transparent resin layer.
【００１９】（１０）前記透明樹脂層の下の前記二次元
補強コア材料に写真、絵画、文字、模様などの意匠が施
されている（９）記載の樹脂成形体。(10) The resin molded product according to (9), wherein the two-dimensional reinforcing core material under the transparent resin layer is provided with a design such as a photograph, a picture, a character, and a pattern.
【００２０】（１１）電子機器の筐体またはその一部で
ある（１）〜（１０）の樹脂成形体。(11) The resin molded product according to any one of (1) to (10), which is a housing of an electronic device or a part thereof.
【００２１】（１２）携帯可能電子機器の筐体またはそ
の一部である（１）〜（１０）の樹脂成形体。(12) The resin molded article of (1) to (10), which is a housing of a portable electronic device or a part thereof.
【００２２】（１３）意匠を目的とする二次元コア材料
と、該コア材料の表面を覆う樹脂表皮層と、該樹脂表皮
層と一体に形成されかつ樹脂表皮層から突出した樹脂製
構造部とを少なくとも有し、該コア材料の意匠を覆う樹
脂表皮層の部分は透明であり、かつ該樹脂表皮層と該構
造部は射出成形法で一体成形されたものであることを特
徴とする樹脂成形体。(13) A two-dimensional core material intended for design, a resin skin layer covering the surface of the core material, and a resin structure formed integrally with the resin skin layer and protruding from the resin skin layer. Wherein at least a portion of the resin skin layer covering the design of the core material is transparent, and the resin skin layer and the structural portion are integrally formed by an injection molding method. body.
【００２３】（１４）前記二次元コア材料が、紙、プラ
スチック、金属、繊維製品のフィルム、シート、網、又
はこれらの積層体からなる（１３）記載の樹脂成形体。(14) The resin molded product according to (13), wherein the two-dimensional core material is made of paper, plastic, metal, a film, a sheet, a net of a fiber product, or a laminate thereof.
【００２４】（１５）前記二次元コア材料に、写真、絵
画、文字、模様などの意匠が施されている（１３）（１
４）記載の樹脂成形体。(15) The two-dimensional core material is provided with a design such as a photograph, a picture, a character, and a pattern.
4) The resin molded article according to the above.
【００２５】[0025]
【発明の実施の形態】本発明の樹脂成形体の特徴の１つ
は非平面状に成形された二次元補強コア材料を含むこと
である。DESCRIPTION OF THE PREFERRED EMBODIMENTS One of the features of the resin molded article of the present invention is that it includes a two-dimensional reinforcing core material formed in a non-planar shape.
【００２６】二次元補強コア材料を含むことにより、薄
肉でも強度を維持することができ、軽量小型化に寄与す
るものである。By including the two-dimensional reinforcing core material, the strength can be maintained even with a thin wall, which contributes to a reduction in weight and size.
【００２７】本発明で用いることができる二次元補強コ
ア材料は、樹脂成形体より高い強度を与えるものであれ
ば、特に限定されないが、好適には織物、編物などの繊
維材料またはそれに樹脂を含浸した繊維材料を用いる。
特に、炭素繊維、ガラス繊維、アラミド繊維などの高強
度繊維材料、ナイロン、ポリエステルなどの合成繊維ま
たは麻、綿などの天然繊維からなる繊維材料、また金属
繊維を含むものなどのいずれかを好ましく用いることが
できる。炭素繊維、ガラス繊維、アラミド繊維などの高
強度繊維材料が薄肉で強度を発揮できるので好ましい。The two-dimensional reinforcing core material that can be used in the present invention is not particularly limited as long as it gives higher strength than a resin molded product, but is preferably a fibrous material such as a woven or knitted fabric or a resin impregnated with the fibrous material. The used fiber material is used.
In particular, carbon fibers, glass fibers, high-strength fiber materials such as aramid fibers, synthetic fibers such as nylon and polyester or hemp, fiber materials composed of natural fibers such as cotton, or any of those including metal fibers are preferably used. be able to. High-strength fiber materials such as carbon fiber, glass fiber, and aramid fiber are preferable because they are thin and can exhibit strength.
【００２８】このような繊維材料は、ガラスクロス、綿
布などの如く、織物、編物として構成されているもの
が、繊維が相互に織り込まれることにより弾性率、耐衝
撃性及びせん断方向に対する補強効果に優れ、また織り
目によって得られる筐体材料としての化粧効果も期待で
きるので、好ましい。そのほか構成繊維相互間を結合材
で結合した不織布などでもよい。Such a fiber material, such as a glass cloth or a cotton cloth, which is formed as a woven or knitted fabric, has an elastic modulus, impact resistance, and a reinforcing effect in the shearing direction by interweaving the fibers. It is preferable because it is excellent and a cosmetic effect as a casing material obtained by weaving can be expected. In addition, a nonwoven fabric or the like in which constituent fibers are bonded with a bonding material may be used.
【００２９】さらに、繊維材料は予め熱可塑性樹脂を含
浸したものが好ましい。表皮樹脂層との濡れ性、結合力
を高めることができるのみならず、後の表皮層の成形の
際には表皮樹脂層の樹脂は繊維材料の中に容易に含浸さ
れないからである。また、熱可塑性樹脂を含浸すること
により、二次元補強コア材料を予め成形することが容易
である。また、射出成形では熱可塑性樹脂が用いられる
ので含浸樹脂も熱可塑性樹脂であることにより表皮層の
樹脂との結合力も高くなることができる。Further, it is preferable that the fiber material is previously impregnated with a thermoplastic resin. This is because not only the wettability and the bonding strength with the skin resin layer can be increased, but also the resin of the skin resin layer is not easily impregnated into the fiber material at the time of forming the skin layer later. Also, by impregnating the thermoplastic resin, it is easy to pre-mold the two-dimensional reinforcing core material. In addition, since a thermoplastic resin is used in injection molding, since the impregnated resin is also a thermoplastic resin, the bonding strength with the resin of the skin layer can be increased.
【００３０】このような熱可塑性樹脂としては、アクリ
ル樹脂、ポリアミド樹脂、ポリエステル樹脂、ポリプロ
ピレン樹脂、ＡＢＳ樹脂、ポリカーボネート樹脂、ポリ
プロピレンエチレン樹脂、これらの変性体または混合体
を例示することができる。ＡＢＳ樹脂、ポリカーボネー
ト樹脂、これらの変性体または混合体が好ましい。Examples of such a thermoplastic resin include an acrylic resin, a polyamide resin, a polyester resin, a polypropylene resin, an ABS resin, a polycarbonate resin, a polypropylene ethylene resin, and a modified or mixture thereof. An ABS resin, a polycarbonate resin, a modified product or a mixture thereof is preferred.
【００３１】上記の如き繊維材料のほか、例えば、金属
板や金属網などでもよい。In addition to the above fiber materials, for example, a metal plate or a metal net may be used.
【００３２】本発明の樹脂成形体の二次元補強コア材料
は、単なる平面形状ではなく、例えば、筐体の形状の如
く三次元形状に成形されていることを特徴としている。
従って、この二次元補強コア材料は表皮樹脂層を射出成
形する前に予め成形されている。The two-dimensional reinforcing core material of the resin molded article of the present invention is characterized in that it is not formed in a mere planar shape, but is formed in a three-dimensional shape such as the shape of a housing.
Therefore, the two-dimensional reinforcing core material is formed before injection molding of the skin resin layer.
【００３３】本発明の二次元補強コア材料の成形方法は
従来公知の成形方法でよい。例えば、プレス成形、ホッ
トプレス成形であることができる。例えば、予め樹脂を
含浸した繊維材料あるいは織布を両面から熱可塑性樹脂
シートで挟んだサンドイッチ構造物を型を用いてプレス
し、型内で加熱して成形物を得る。成形された繊維材料
の表面には樹脂が露出していることが好ましい。The molding method of the two-dimensional reinforcing core material of the present invention may be a conventionally known molding method. For example, press molding and hot press molding can be used. For example, a sandwich structure in which a fibrous material or a woven fabric previously impregnated with a resin is sandwiched between thermoplastic resin sheets from both sides is pressed using a mold, and heated in the mold to obtain a molded product. It is preferable that the resin is exposed on the surface of the formed fiber material.
【００３４】本発明の樹脂成形体のもう１つの特徴は、
成形された二次元補強コア材料体の表面に、樹脂表皮層
と、樹脂表皮層と一体に形成されかつ樹脂表皮層から突
出した樹脂製構造部を有することである。Another feature of the resin molded article of the present invention is that
The surface of the molded two-dimensional reinforcing core material body has a resin skin layer and a resin structure formed integrally with the resin skin layer and protruding from the resin skin layer.
【００３５】本発明は、携帯電話の筐体の如く複雑な形
状を持つ樹脂成形体を、強度を維持しながら薄肉化する
ために二次元補強コア材料体を補強材として用いるもの
だからである。二次元補強コア材料体の表面に樹脂表皮
層を形成するだけであれば技術的に困難はない。例え
ば、二次元補強コア材料体の表面を単に樹脂コーティン
グすればよい。しかし、成形された二次元補強コア材料
体の表面に、樹脂表皮層と、樹脂表皮層と一体に形成さ
れかつ樹脂表皮層から突出した樹脂製構造部を形成する
ことは、薄肉であればあるほど難しい。This is because the present invention uses a two-dimensional reinforcing core material as a reinforcing material in order to reduce the thickness of a resin molded body having a complicated shape such as a case of a cellular phone while maintaining strength. There is no technical difficulty if only a resin skin layer is formed on the surface of the two-dimensional reinforcing core material body. For example, the surface of the two-dimensional reinforcing core material body may be simply resin-coated. However, forming a resin skin layer and a resin structure formed integrally with the resin skin layer and protruding from the resin skin layer on the surface of the molded two-dimensional reinforcing core material body is a thin wall. It is difficult.
【００３６】本発明の樹脂成形体において表皮層から突
出した構造部とは、例えば、筐体のねじ止め用ボスやス
ライド式止め構造、あるいは電池収容部の仕切り、補強
リブ、部品固定用構造物、等を言う。この突出した構造
部は樹脂製であるが、例えば、筐体のねじ止め用ボスの
場合に樹脂製のボスの先端に金属製のナットを同時にイ
ンサート成形するなど、樹脂以外の部材が含まれていて
もよい。In the resin molded article of the present invention, the structural part protruding from the skin layer is, for example, a boss for screwing a housing or a slide type stopping structure, or a partition, a reinforcing rib, a part fixing structure of a battery housing part. Say, etc. This protruding structure portion is made of resin, but includes a member other than resin, for example, in the case of a screw boss of a housing, a metal nut is simultaneously insert-molded at the tip of the resin boss. You may.
【００３７】本発明の樹脂成形体の樹脂表皮層と突出し
た樹脂製構造部は一体に成形されている。樹脂製突出構
造部は樹脂成形体本体に一体に成形されることにより、
結合強度が維持される。本発明のように特に薄肉の樹脂
表皮層の表面に樹脂製突出構造部を形成する場合、樹脂
製突出構造部を樹脂表皮層と一体に成形するのみなら
ず、樹脂表皮層を樹脂成形体の表面全体を覆うように成
形することが有効である。突出構造部と一体に成形され
た樹脂表皮層が二次元補強コア材料の一部の表面だけを
覆う場合、突出構造部と樹脂表皮層が一体で二次元補強
コア材料から剥離しやすいからである。従って、本発明
の樹脂成形体の樹脂表皮層は、樹脂成形体の表裏の大部
分を覆うように連続層であることが望ましい。樹脂製突
出構造物の結合強度を高く維持する観点からは全表面を
覆うことが最適である。しかし、意匠上あるいは製造プ
ロセスの都合上から、二次元補強コア材料の一部が露出
しても構わない。The resin skin layer of the resin molded article of the present invention and the protruding resin structure are integrally formed. The resin projecting structure is molded integrally with the resin molded body,
The bond strength is maintained. In the case where the resin projecting structure is formed on the surface of the thin resin skin layer as in the present invention, not only the resin projecting structure is formed integrally with the resin skin layer, but also the resin skin layer is formed of the resin molded body. It is effective to mold so as to cover the entire surface. This is because, when the resin skin layer integrally formed with the projecting structure portion covers only a part of the surface of the two-dimensional reinforcing core material, the projecting structure portion and the resin skin layer are easily separated from the two-dimensional reinforcing core material integrally. . Therefore, it is desirable that the resin skin layer of the resin molded article of the present invention is a continuous layer so as to cover most of the front and back surfaces of the resin molded article. From the viewpoint of maintaining the bonding strength of the resin projecting structure high, it is optimal to cover the entire surface. However, a part of the two-dimensional reinforcing core material may be exposed due to a design or a manufacturing process.
【００３８】樹脂表皮層及び突出樹脂部の樹脂として
は、特に限定されないが、アクリル樹脂、ポリアミド樹
脂、ポリエステル樹脂、ポリプロピレン樹脂、ＡＢＳ樹
脂、ポリカーボネート樹脂、ポリプロピレンエチレン樹
脂、これらの変性体または混合体などの熱可塑性樹脂を
好ましく用いることができる。ＡＢＳ樹脂、ポリカーボ
ネート樹脂、これらの変性体または混合体が好ましい。The resin of the resin skin layer and the protruding resin portion is not particularly limited, but may be an acrylic resin, a polyamide resin, a polyester resin, a polypropylene resin, an ABS resin, a polycarbonate resin, a polypropylene ethylene resin, or a modified or mixture thereof. Can be preferably used. An ABS resin, a polycarbonate resin, a modified product or a mixture thereof is preferred.
【００３９】樹脂表皮層及び突出樹脂部に用いる樹脂
は、樹脂表皮層及び突出樹脂部が一体に成形される限
り、部分によって２種以上の樹脂から構成されていても
よい。強度その他の機能、あるいは印刷、美観などを考
慮することができる。例えば、筐体の外側（樹脂表皮
層）を透明樹脂（半透明、着色透明を含む）で構成して
美観に寄与することができる。The resin used for the resin skin layer and the protruding resin portion may be composed of two or more resins depending on the portion as long as the resin skin layer and the protruding resin portion are integrally formed. Strength and other functions, printing, aesthetics, etc. can be considered. For example, the exterior (resin skin layer) of the housing can be made of a transparent resin (including translucent and colored transparent) to contribute to aesthetics.
【００４０】樹脂表皮層を透明樹脂で構成するだけで、
二次元補強コア材料自体が意匠を構成することが可能で
ある。特に繊維材料、金網などは意匠性が高い。しか
し、さらに、コア材料に写真、絵画、文字、模様などの
意匠を施すことにより、多様な意匠製品を提供すること
ができる。なお、普通に意匠用途に用いられている写真
などを施した紙やプラスチックフィルムは、基本的にそ
のまま本発明の二次元補強コア材料として使用できる特
性を有していると言える。Just by forming the resin skin layer with a transparent resin,
The two-dimensional reinforcing core material itself can constitute the design. In particular, fiber materials, wire mesh, and the like have high design properties. However, by applying designs such as photographs, paintings, characters, and patterns to the core material, various design products can be provided. In addition, it can be said that a paper or a plastic film on which a photograph or the like usually used for a design purpose can be basically used as it is as the two-dimensional reinforcing core material of the present invention.
【００４１】さらに、コア材料を意匠目的に使用するか
否かとは別に、本発明の樹脂成形体の樹脂表皮層の外側
に更に印刷を施したり、装飾層、保護層をさらに形成し
てもよい。In addition to whether or not the core material is used for design purposes, the resin molded article of the present invention may be further printed on the outer surface of the resin skin layer, or may be further formed with a decorative layer and a protective layer. .
【００４２】本発明の樹脂成形体は、樹脂表皮層と突出
樹脂部を成形された二次元補強コア材料と共に射出成形
法で一体成形することをもう１つの特徴とする。Another feature of the resin molded article of the present invention is that a resin skin layer and a protruding resin portion are integrally molded with a molded two-dimensional reinforcing core material by an injection molding method.
【００４３】本発明の如く樹脂本体から突出した樹脂製
構造部を有する複雑な形状の樹脂成形体を成形する方法
としては、射出成形法が最適である。しかし、従来の射
出成形法では、二色成形法や、サンドイッチ成形法など
の樹脂複合構造の製造、あるいはインサート成形法、ア
ウトサート成形法などの異材を樹脂成形体に取り付けた
複合構造の製造は知られているが、補強コア材料を内部
に埋め込んだ射出成形は知られていない。射出成形のよ
うに高い圧力で成形される場合には、コア材料を中子な
どでは到底保持できないからである。As a method for molding a resin molded article having a complicated shape having a resin structure protruding from the resin body as in the present invention, an injection molding method is most suitable. However, with the conventional injection molding method, it is not possible to manufacture a resin composite structure such as two-color molding method or sandwich molding method, or a composite structure where different materials such as insert molding method and outsert molding method are attached to the resin molded body. Although known, injection molding with a reinforced core material embedded therein is not known. This is because when molding is performed at a high pressure as in injection molding, the core material cannot be held at all by the core or the like.
【００４４】しかし、本発明者らが鋭意検討したとこ
ろ、予め成形された二次元補強コア材料を型内に設置し
て二次元補強コア材料の一方の表面に樹脂を射出成形し
てから、その裏側にも樹脂を射出成形することにより、
予め成形された二次元補強コア材料を内部に埋め込む射
出成形が可能であり、またこの方法によれば二次元補強
コア材料を成形体の内部に所望の位置にしかも均一に配
置することが可能であることが見出された。さらに、従
来の二色成形法を変形することにより、一台の射出成形
装置で、２種の型を用いた２次射出によって、二次元補
強コア材料の埋め込み射出成形が可能であることも確認
した。これによって、２度の成形工程を行う手間も省略
できるので、製造コストの点からも有利に適用できるこ
とが確認された。すなわち、二次元補強コア材料の一方
の表面に樹脂を一次射出した後、型を移動変換して、二
次元補強コア材料の裏側へ二次射出することにより、本
発明の所望の埋め込み型樹脂射出成形体を製造すること
ができる。従来、本発明のような二次元補強コア材料で
補強した樹脂成形体を製造するには射出成形法以外の真
空バッグを用いる方法などで、長い時間をかけて製造す
る必要があり、しかも従来の方法では樹脂製突出構造物
を高強度に形成することは困難であった。However, the present inventors have made intensive studies and found that a preformed two-dimensional reinforcing core material was placed in a mold, and a resin was injection-molded on one surface of the two-dimensional reinforcing core material. By injection molding resin on the back side,
It is possible to perform injection molding in which a preformed two-dimensional reinforcing core material is embedded therein, and according to this method, the two-dimensional reinforcing core material can be arranged at a desired position and uniformly within the molded body. It was found to be. In addition, it was confirmed that, by modifying the conventional two-color molding method, it is possible to embed and injection-mold a two-dimensional reinforced core material by secondary injection using two types of molds with one injection molding apparatus. did. As a result, it is possible to omit the trouble of performing the two molding steps, and it has been confirmed that the method can be advantageously applied from the viewpoint of manufacturing cost. That is, after the resin is primarily injected onto one surface of the two-dimensional reinforcing core material, the mold is moved and converted, and the resin is secondarily injected onto the back side of the two-dimensional reinforcing core material. A molded article can be manufactured. Conventionally, in order to produce a resin molded body reinforced with a two-dimensional reinforcing core material as in the present invention, it is necessary to take a long time to produce the resin molded body by a method using a vacuum bag other than the injection molding method. It has been difficult to form a resin projecting structure with high strength by the method.
【００４５】本発明により、上記のような成形法を採用
することにより、非平面状に成形された二次元補強コア
材料と、該コア材料の表面を覆う樹脂表皮層と、該樹脂
表皮層と一体に形成されかつ樹脂表皮層から突出した樹
脂製構造部とを少なくとも有し、該樹脂表皮層と該構造
部は射出成形法で一体成形されたものであることを特徴
とする樹脂成形体を実際にまた経済的に提供することが
可能になる。According to the present invention, by employing the above-described molding method, a two-dimensional reinforcing core material formed into a non-planar shape, a resin skin layer covering the surface of the core material, a resin skin layer, A resin molded body having at least a resin structure part integrally formed and protruding from the resin skin layer, wherein the resin skin layer and the structure part are integrally molded by an injection molding method. It can be provided in practice and economically.
【００４６】特に、小型電子機器の筐体に関して述べる
と、本発明によれば、従来の０．８〜１．２ｍｍ厚の射
出成形体製品と比べて、同じ肉厚でも二次元補強コア材
料で補強されているので顕著に高い強度を持つ筐体を製
造することができ、さらにはより薄い肉厚でも十分な強
度を持つ筐体を提供することばができるので、より薄肉
化、軽量化、小型化に寄与するものである。０．８ｍｍ
以下、例えば、０．６ｍｍの肉厚の筐体あるいは筐体部
分を持つ携帯通信機器が可能にされる。In particular, with respect to the housing of a small electronic device, according to the present invention, two-dimensional reinforcing core material having the same thickness can be used as compared with a conventional injection molded product having a thickness of 0.8 to 1.2 mm. Reinforcement makes it possible to manufacture a housing with remarkably high strength, and furthermore, it is possible to provide a housing having sufficient strength even with a thinner wall thickness, so that it is thinner, lighter, and smaller. It contributes to the conversion. 0.8mm
Hereinafter, for example, a portable communication device having a housing or a housing portion having a thickness of 0.6 mm is enabled.
【００４７】先に説明したが、本発明によれば複雑形状
でかつコア材料を含む樹脂成形体を射出成形法で製造し
簡単かつ安価な製造方法が提案されるが、この製造方法
を利用して、コア材料を含む樹脂射出成形体を補強目的
の有無に関係なく意匠目的に使用することもできる。こ
うして、本発明によれば、意匠を目的とする二次元コア
材料と、該コア材料の表面を覆う樹脂表皮層と、該樹脂
表皮層と一体に形成されかつ樹脂表皮層から突出した樹
脂製構造部とを少なくとも有し、該コア材料の意匠部分
を覆う樹脂表皮層は透明であり、かつ該樹脂表皮層と該
構造部は射出成形法で一体成形されたものであることを
特徴とする樹脂成形体も提供される。As described above, according to the present invention, a simple and inexpensive manufacturing method in which a resin molded body having a complex shape and containing a core material is manufactured by an injection molding method is proposed. Thus, a resin injection molded article containing a core material can be used for design purposes irrespective of the purpose of reinforcement. Thus, according to the present invention, a two-dimensional core material for design, a resin skin layer covering the surface of the core material, and a resin structure formed integrally with the resin skin layer and protruding from the resin skin layer Wherein the resin skin layer covering the design portion of the core material is transparent, and the resin skin layer and the structure are integrally formed by an injection molding method. Moldings are also provided.
【００４８】意匠目的に使用するコア材料は、紙、プラ
スチック、金属、繊維製品などのフィルム、シート、
網、その他、又はこれらの積層体などのいずれでもよ
く、さらにこれらのコア材料は衣料用の繊維布やカーボ
ンファイバークロスのように織物など自体の模様を意匠
として用いるほか、紙やフィルムなどの上に写真、絵
画、文字、模様などと印刷したものなど、各種のものを
自由に使用できる。Core materials used for design purposes include films, sheets, such as paper, plastic, metal, and fiber products.
Any of net, other, or a laminate of these may be used.In addition, these core materials use their own patterns such as woven fabrics as designs, such as fiber cloth or carbon fiber cloth for clothing, and paper or film. You can freely use various things, such as those printed with photographs, paintings, characters, patterns, etc.
【００４９】このような意匠を施した樹脂成形体の構成
及び製造方法は基本的に前述の二次元補強コア材料を用
いた樹脂成形体の場合と同様であることができるが、特
にコア材料は補強目的からの制約がなくなる分だけ材料
及び製法の選択の自由度が増大する。例えば、意匠目的
のコア材料は予め三次元的に成形したものに限定されな
いし、補強意図が希薄であればコア層の面積は意匠に必
要な部分を含めば十分である。また可撓性フィルムなど
自由に使用できる。もっとも先に述べたように、普通に
意匠基材として用いられるコア材料である紙、フィル
ム、織物などは、二次元コア材料であることにより、一
般的に、樹脂成形体の引張強度、剪断強度、耐衝撃性を
向上させる効果を有しており、いずれも二次元補強コア
材料として機能するものである。The structure and manufacturing method of the resin molded article having such a design can be basically the same as the case of the resin molded article using the two-dimensional reinforcing core material described above. The degree of freedom in selecting a material and a manufacturing method is increased as much as the restriction from the reinforcement purpose is eliminated. For example, the core material for the purpose of design is not limited to a three-dimensionally formed core material in advance, and if the intention of reinforcement is low, the area of the core layer is sufficient if the area required for the design is included. In addition, a flexible film or the like can be used freely. However, as mentioned earlier, the core materials that are commonly used as design base materials, such as paper, film, and woven fabric, are generally two-dimensional core materials, which generally result in tensile strength and shear strength of the resin molded product. In addition, each of them has an effect of improving impact resistance, and each functions as a two-dimensional reinforcing core material.
【００５０】従来、電子機器筐体などの樹脂成形体に施
す方法としては、成形体上への印刷、意匠を施したラベ
ルやフィルムを成形体へ貼付、フィルム上に転写性イン
クで印刷した後フィルムを金型内にインサートしてから
モールドして印刷パターンを成形体に転写する方法、な
どがあるが、これらの場合には意匠は表面に形成されて
いるので、摩擦や衝撃などで容易に剥がれたり、擦れる
などのより摩滅することが多かった。しかし、本発明に
よれば、意匠となるコア材料に表皮層として透明樹脂層
を射出成形して形成できるので、外部からの摩擦、傷が
直接に意匠に影響を及ぼすことがなく、長期間にわたっ
て外観の美麗さを保つことができる効果がある。Conventionally, as a method of applying to a resin molded article such as an electronic device housing, printing on the molded article, attaching a designed label or film to the molded article, printing on the film with a transferable ink, There is a method of inserting a film into a mold and then molding and transferring the print pattern to a molded body.In these cases, the design is formed on the surface, so it is easy to apply friction or impact. Often more worn away such as peeling and rubbing. However, according to the present invention, since a transparent resin layer can be formed by injection molding as a skin layer on a core material to be a design, external friction and scratches do not directly affect the design, This has the effect of maintaining the beautiful appearance.
【００５１】[0051]
【実施例】図面を参照して実施例を説明する。An embodiment will be described with reference to the drawings.
【００５２】図１に本発明の樹脂成形体を適用するのに
好適な一例として、携帯電話の筐体を示す。FIG. 1 shows a housing of a portable telephone as a preferred example to which the resin molded article of the present invention is applied.
【００５３】図１において、筐体本体１は平面状ではな
く、例えば、約１０ｃｍ（長さ）×約４ｃｍ（幅）×約
１ｃｍ（高さ）程度の寸法の函型である。肉厚は０．８
〜１．２ｍｍ程度である。筐体本体１の内部にはネジ止
め用にナットを埋め込んだボス部２、勘合用構造物3a,3
b,3c,3d,3e,3f,3g,3hなどの筐体外壁から突出する構造
部が存在する。この例では樹脂製突出構造部はネジ止め
用ボス及び勘合用構造物だけであるが、その他のもので
もよい。これらの樹脂製突出構造部は、その形状と必要
強度から射出成形でないと形成が困難である。In FIG. 1, the casing main body 1 is not flat, but is, for example, a box having dimensions of about 10 cm (length) × about 4 cm (width) × about 1 cm (height). 0.8 wall thickness
About 1.2 mm. A boss portion 2 in which a nut is embedded for screwing, a fitting structure 3a, 3
There are structural parts such as b, 3c, 3d, 3e, 3f, 3g, and 3h that protrude from the outer wall of the housing. In this example, the resin projecting structure is only the screwing boss and the fitting structure, but may be other structures. These resin-made protruding structures are difficult to form without injection molding due to their shapes and required strength.
【００５４】本発明はこのような封雑な形状をもつ薄肉
製品に強度を付与するために、二次元補強コア材料を埋
設して補強するものである。The present invention embeds and reinforces a two-dimensional reinforcing core material to impart strength to such a thin product having a closed shape.
【００５５】図２(a)を参照すると、二次元補強コア材
料の代表的な例として炭素繊維クロス１１を熱可塑性樹
脂シート１２，１３で挟んだ積層シート１４を準備す
る。あるいは、この二次元補強コア材料は予め補強繊維
素材に熱可塑性樹脂を含浸したシート、プリプレグでも
よい。熱可塑性樹脂としてはポリカーボネートが好適で
ある。いずれにしても、二次元補強コア材料には熱可塑
性樹脂を含浸させないと、射出成形する樹脂と補強繊維
素材の結合強度が小さくなり、本発明の目的からは適当
ではない。射出成形の際に補強繊維素材の目の中に熱可
塑性樹脂を含浸することは一般的に困難である。Referring to FIG. 2A, a laminated sheet 14 in which a carbon fiber cloth 11 is sandwiched between thermoplastic resin sheets 12 and 13 is prepared as a typical example of a two-dimensional reinforcing core material. Alternatively, the two-dimensional reinforcing core material may be a sheet or prepreg in which a reinforcing fiber material is impregnated with a thermoplastic resin in advance. Polycarbonate is preferred as the thermoplastic resin. In any case, if the two-dimensional reinforcing core material is not impregnated with a thermoplastic resin, the bonding strength between the resin to be injection-molded and the reinforcing fiber material becomes small, which is not suitable for the purpose of the present invention. It is generally difficult to impregnate a thermoplastic resin into the eyes of a reinforcing fiber material during injection molding.
【００５６】上記の積層シート１４あるいはプリプレグ
を、図２(b)に示す如く、成形用型15を用いてプレス及
び加熱して、所定の形状に予備成形する。積層シート１
４ではこの成形の際に同時に熱可塑性樹脂が補強繊維素
材中に含浸される。The laminated sheet 14 or the prepreg is preformed into a predetermined shape by pressing and heating using a molding die 15 as shown in FIG. 2 (b). Laminated sheet 1
In No. 4, a thermoplastic resin is simultaneously impregnated into the reinforcing fiber material during this molding.
【００５７】図２(c)に示す如く、型１５で予備成形さ
れた積層シート１６の不要な端縁１６aはトリミングし
て、図２(d)に示す如く、所望の二次元補強コア材料予
備成形体１７を得る。As shown in FIG. 2 (c), unnecessary edges 16a of the laminated sheet 16 preformed by the mold 15 are trimmed to obtain a desired two-dimensional reinforcing core material as shown in FIG. 2 (d). A molded body 17 is obtained.
【００５８】次いで、例えば図３(a)を参照すると、射
出成形装置の型３２a,３２bに予備成形体１７をセット
する。予備成形体１７は半型３２aの側に保持され、射
出成形装置のノズル３７から半型３２bのスプルー及び
ランナー３３を通して予備成形体１７の内側のキャビテ
ィ３４に熱可塑性樹脂を射出して、図２(e)及び図４を
参照すると、予備成形体１７の内側表面を樹脂表皮層１
８で覆うと共に、予備成形体１７の内側表面にボスなど
の突出構造部１９を内側表面の樹脂表皮層１８と一体に
形成する。この射出成形において、二次元補強コア材料
予備成形体１７の一表面（内側）に樹脂表皮層１８が被
覆されると共に樹脂製突出構造部１９が形成され、樹脂
製突出構造部１９は樹表皮層１８と一体に成形される
が、二次元補強コア材料予備成形体１７の補強繊維素材
１１には熱可塑性樹脂が含浸されているのでコア材料と
樹脂表皮層１８とは強固に結合すると共に、従来の射出
成形法の場合と同様に樹脂表皮層１８と樹脂製突出構造
部１９との間も一体に強固に結合した成形が行われる。
こうして一次射出成形体３５（図２及び図３(a)に図示
せず、図３(b)参照）が得られる。Next, referring to FIG. 3A, for example, the preform 17 is set in the molds 32a and 32b of the injection molding apparatus. The preform 17 is held on the side of the half mold 32a, and the thermoplastic resin is injected from the nozzle 37 of the injection molding apparatus into the cavity 34 inside the preform 17 through the sprue and the runner 33 of the half mold 32b. (e) and FIG. 4, the inner surface of the preform 17 is made of the resin skin layer 1.
8 and a protruding structure 19 such as a boss is formed integrally with the resin skin layer 18 on the inner surface of the preform 17. In this injection molding, one surface (inside) of the two-dimensional reinforcing core material preform 17 is covered with a resin skin layer 18 and a resin projecting structure 19 is formed. Although the molding is integrally formed with the resin material 18, the reinforcing fiber material 11 of the two-dimensional reinforcing core material preform 17 is impregnated with a thermoplastic resin, so that the core material and the resin skin layer 18 are strongly bonded to each other. As in the case of the injection molding method, the resin skin layer 18 and the resin projecting structure portion 19 are integrally and firmly connected to each other.
Thus, a primary injection molded body 35 (not shown in FIGS. 2 and 3 (a), see FIG. 3 (b)) is obtained.
【００５９】本発明ではさらに、一次射出成形体３５の
外側表面にも二次の射出成形を行う。これは、基本的
に、二次元補強コア材料の一面だけではなく、全面を覆
うことにより、従来の射出成形体に内部に二次元補強コ
ア材料を埋設して補強した構造の製品が得られるからで
ある。二次元補強コア材料を内部に埋設することによ
り、強度が向上する。二次元補強コア材料の表面に形成
する射出成形樹脂層が一面だけであったり、両面であっ
ても連続していないと、薄肉かつ複雑な形状の成形体で
は強度が十分でなくなる可能性があるからである。しか
し、先に述べたように、必要な強度が取れる限り、射出
成形樹脂層が二次元補強コア材料の全面を覆う必要はな
い。こうして。図2(e)及び図４に示すような、筐体の全
面（両面）を射出成形樹脂層１８，２０で覆った筐体２
１が得られる。In the present invention, secondary injection molding is also performed on the outer surface of the primary injection molded body 35. This is basically because not only one surface of the two-dimensional reinforcing core material but also the entire surface is covered, so that a product having a structure in which the two-dimensional reinforcing core material is embedded inside the conventional injection molded body and reinforced is obtained. It is. By embedding the two-dimensional reinforcing core material inside, the strength is improved. If the injection-molded resin layer formed on the surface of the two-dimensional reinforcing core material is only one side, or is not continuous even on both sides, the strength may not be sufficient for a thin-walled and complicated-shaped molded body Because. However, as described above, the injection-molded resin layer does not need to cover the entire surface of the two-dimensional reinforcing core material as long as the required strength is obtained. In this way. As shown in FIG. 2 (e) and FIG.
1 is obtained.
【００６０】この二次側の射出成形は、一次射出成形を
終えた成形体を型から取り出して、別の射出成形装置に
別の型にセットすることにより、筐体の外側表面に射出
成形して、結果として、二次元補強コア材料の両面を覆
うように射出成形してもよい。しかし、図3(b)を参照す
ると、射出成形装置として、二色成形装置の如く、２つ
の型を交換できる射出成形装置を用い、かつ一次の射出
成形と二次の射出成形では、二次元補強コア材料の反対
側から樹脂が射出されるように工夫すると、一台の射出
成形装置を用いてしかも単に型を交換するだけで、二次
元補強コア材料の両面（全面）を覆うように射出成形す
ることができるので、製造工程が簡単で、コストアップ
もなしで、二次元補強コア材料補強が可能になる。例え
ば、図3(b)を参照すると、半型３２(a)を移動して別の
半型３２cに取り替えて、一次射出成形体３５を成形体
３５の内側から保持し、かつ射出される樹脂をノズル３
７を介してスプルー及びランナー３３と別のスプルー及
びランナー３６を通すことにより成形体３５の外側に成
形するようにすることが考えられる。In the injection molding on the secondary side, the molded body after the primary injection molding is taken out of the mold and set in another injection molding apparatus in another mold, thereby performing injection molding on the outer surface of the housing. As a result, the two-dimensional reinforcing core material may be injection molded to cover both surfaces. However, referring to FIG. 3 (b), as the injection molding apparatus, an injection molding apparatus such as a two-color molding apparatus capable of exchanging two molds is used, and in the primary injection molding and the secondary injection molding, two-dimensional molding is performed. By devising the resin to be injected from the opposite side of the reinforcing core material, the two-dimensional reinforcing core material can be injected so as to cover both sides (entire surface) of the two-dimensional reinforcing core material by using one injection molding device and simply changing the mold. Since it can be molded, the two-dimensional reinforcing core material can be reinforced with a simple manufacturing process and without an increase in cost. For example, referring to FIG. 3 (b), the half mold 32 (a) is moved to be replaced with another half mold 32c, the primary injection molded body 35 is held from the inside of the molded body 35, and the injected resin The nozzle 3
It is conceivable that the sprue and runner 33 and the other sprue and runner 36 are passed through 7 to be formed on the outside of the formed body 35.
【００６１】図４に、このようにして得られる樹脂射出
成形体の一部分の破断横断面図を示す。二次元補強コア
材料１１を挟んで表面樹脂層１８，２０が存在し、少な
くとも1方の表面樹脂層１８に樹脂製突出構造部１９を
有する。FIG. 4 is a cutaway cross-sectional view of a part of the resin injection molded article obtained in this manner. Surface resin layers 18 and 20 are present with the two-dimensional reinforcing core material 11 interposed therebetween, and at least one surface resin layer 18 has a resin projecting structure 19.
【００６２】図５に、コア材料を意匠目的で使用した樹
脂成形体の例を示す。携帯電話の筐体４１のコア材料に
文字、模様などの意匠４２が施されて、表皮樹脂層とし
て透明樹脂４３が用いられることにより、耐久性のある
意匠が施された例である。なお、前述の如く表皮樹脂層
を透明樹脂層にすることにより補強繊維布帛の如く本来
補強目的の材料を見せるシースルータイプの意匠形態も
ある。FIG. 5 shows an example of a resin molding using the core material for design purposes. This is an example in which a design 42 such as characters and patterns is applied to a core material of a housing 41 of a mobile phone, and a durable design is applied by using a transparent resin 43 as a skin resin layer. Note that there is also a see-through type design form in which a material originally intended for reinforcement, such as a reinforcing fiber cloth, is displayed by making the skin resin layer a transparent resin layer as described above.
【図１】本発明の補強コアを有する樹脂射出成形体の適
用例の１例としての携帯電話の筐体を示す。FIG. 1 shows a case of a mobile phone as an example of an application example of a resin injection molded article having a reinforcing core of the present invention.
【図２】本発明の補強コアを有する樹脂射出成形体の製
造工程を説明する図である。FIG. 2 is a diagram illustrating a process for manufacturing a resin injection molded article having a reinforcing core according to the present invention.
【図３】本発明の補強コアを有する樹脂射出成形体の射
出成形工程を説明する図である。FIG. 3 is a diagram illustrating an injection molding step of a resin injection molded article having a reinforcing core according to the present invention.
【図４】本発明の樹脂射出成形体の一部分の破断横断面
図を示す。FIG. 4 shows a cutaway cross-sectional view of a part of the resin injection molded article of the present invention.
【図５】本発明の意匠目的のコアを有する樹脂射出成形
体の例を示す。FIG. 5 shows an example of a resin injection molded article having a design-purpose core of the present invention.
１…筐体本体 ２…ネジ止め用ボス（樹脂製突出構造物） ３…勘合用構造物（樹脂製突出構造物） １１…炭素繊維クロス １２、１３…熱可塑性樹脂シート １２a,１３b…炭素繊維クロス含浸熱可塑性樹層 １４…積層シート １５…予備成形用型 １６、１７…予備成形体 １８…内側射出成形樹脂層 １９…樹脂突出構造物 ２０…外側射出成形樹脂層 ２１…射出成形体 ３２a、３２b、３２c… ３３、３６…スプルー及びランナー ３４…型内キャビティ部（成形用空間） ３５…一次成形体 ３７…射出成形ノズル ４１…筐体 ４２…意匠（文字、模様） DESCRIPTION OF SYMBOLS 1 ... Housing main body 2 ... Boss for screwing (projection structure made of resin) 3 ... Structure for fitting (projection structure made of resin) 11 ... Carbon fiber cloth 12, 13 ... Thermoplastic resin sheet 12a, 13b ... Carbon fiber Cross-impregnated thermoplastic resin layer 14 ... Laminated sheet 15 ... Pre-molding mold 16, 17 ... Pre-molded body 18 ... Inner injection molded resin layer 19 ... Resin projecting structure 20 ... Outer injection molded resin layer 21 ... Injection molded body 32a 32b, 32c 33, 36 ... sprue and runner 34 ... cavity in mold (space for molding) 35 ... primary molded body 37 ... injection molding nozzle 41 ... housing 42 ... design (character, pattern)
Claims (15)
料と、該コア材料の表面を覆う樹脂表皮層と、該樹脂表
皮層と一体に形成されかつ樹脂表皮層から突出した樹脂
製構造部とを少なくとも有し、該樹脂表皮層と該構造部
は射出成形法で一体成形されたものであることを特徴と
する樹脂成形体。1. A two-dimensional reinforcing core material formed in a non-planar shape, a resin skin layer covering a surface of the core material, and a resin structure formed integrally with the resin skin layer and protruding from the resin skin layer. Wherein the resin skin layer and the structural part are integrally formed by an injection molding method.
どの繊維材料またはそれに樹脂を含浸した繊維材料であ
る請求項１記載の樹脂成形体。2. The resin molded product according to claim 1, wherein the two-dimensional reinforcing core material is a fiber material such as a woven fabric or a knitted fabric, or a fiber material impregnated with a resin.
アラミド繊維から選ばれるものである請求項２記載の樹
脂成形体。3. The fiber material is carbon fiber, glass fiber,
The resin molded product according to claim 2, which is selected from aramid fibers.
などの合成繊維または麻、綿などの天然繊維から選ばれ
るものである請求項２記載の樹脂成形体。4. The resin molded article according to claim 2, wherein the fiber material is selected from synthetic fibers such as nylon and polyester and natural fibers such as hemp and cotton.
る請求項２、３または４に記載の樹脂体。5. The resin body according to claim 2, wherein the fiber material contains a metal fiber.
を含浸したものである請求項１〜５にいずれかに記載の
樹脂成形体。6. The resin molded product according to claim 1, wherein the fibrous material is obtained by impregnating a fibrous material with a thermoplastic resin.
アミド樹脂、ポリエステル樹脂、ポリプロピレン樹脂、
ＡＢＳ樹脂、ポリカーボネート樹脂、ポリプロピレンエ
チレン樹脂、これらの変性体または混合体である請求項
６記載の樹脂成形体。7. The thermoplastic resin is an acrylic resin, a polyamide resin, a polyester resin, a polypropylene resin,
The resin molded product according to claim 6, which is an ABS resin, a polycarbonate resin, a polypropylene ethylene resin, a modified product or a mixture thereof.
とが同一材料からなる請求項２〜７のいずれか１項に記
載の樹脂成形体。8. The resin molded product according to claim 2, wherein the resin skin layer and the fiber material-impregnated resin are made of the same material.
樹脂層である請求項１〜８のいずれか１項に記載の樹脂
成形体。9. The resin molded article according to claim 1, wherein at least a part of the resin skin layer is a transparent resin layer.
画、文字、模様などの意匠が施され、その上に透明樹脂
層が存在する請求項９記載の樹脂成形体。10. The resin molded product according to claim 9, wherein a design such as a photograph, a picture, a character, and a pattern is applied to the two-dimensional reinforcing core material, and a transparent resin layer is present thereon.
請求項１〜１０のいずれか１項に記載の樹脂成形体。11. The resin molded article according to claim 1, which is a housing of an electronic device or a part thereof.
部である請求項１〜１０のいずれか１項に記載の樹脂成
形体。12. The resin molded product according to claim 1, which is a housing of a portable electronic device or a part thereof.
該コア材料の表面を覆う樹脂表皮層と、該樹脂表皮層と
一体に形成されかつ樹脂表皮層から突出した樹脂製構造
部とを少なくとも有し、該コア材料の意匠を覆う樹脂表
皮層の部分は透明であり、かつ該樹脂表皮層と該構造部
は射出成形法で一体成形されたものであることを特徴と
する樹脂成形体。13. A two-dimensional core material for design purposes,
A portion of the resin skin layer that has at least a resin skin layer covering the surface of the core material and a resin structure formed integrally with the resin skin layer and protruding from the resin skin layer, and covering a design of the core material. Is a resin molded product, characterized in that the resin skin layer and the structure are integrally molded by an injection molding method.
ック、金属、繊維製品のフィルム、シート、網、又はこ
れらの積層体からなる請求項１３記載の樹脂成形体。14. The resin molded article according to claim 13, wherein the two-dimensional core material is made of paper, plastic, metal, a film, a sheet, a net, or a laminate of a fiber product.
文字、模様などの意匠が施されている請求項１３又は１
４記載の樹脂成形体。15. The two-dimensional core material includes a photograph, a painting,
The design according to claim 13 or 1, wherein a design such as a character or a pattern is provided.
5. The resin molded product according to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001393485A JP2002254469A (en) | 2000-12-29 | 2001-12-26 | Resin injection-molded item having core for reinforcement or design |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000-404974 | 2000-12-29 | ||
| JP2000404974 | 2000-12-29 | ||
| JP2001393485A JP2002254469A (en) | 2000-12-29 | 2001-12-26 | Resin injection-molded item having core for reinforcement or design |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002254469A true JP2002254469A (en) | 2002-09-11 |
Family
ID=26607308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001393485A Withdrawn JP2002254469A (en) | 2000-12-29 | 2001-12-26 | Resin injection-molded item having core for reinforcement or design |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002254469A (en) |
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