JPH0699594B2 - Resin molded product - Google Patents
Resin molded productInfo
- Publication number
- JPH0699594B2 JPH0699594B2 JP60236390A JP23639085A JPH0699594B2 JP H0699594 B2 JPH0699594 B2 JP H0699594B2 JP 60236390 A JP60236390 A JP 60236390A JP 23639085 A JP23639085 A JP 23639085A JP H0699594 B2 JPH0699594 B2 JP H0699594B2
- Authority
- JP
- Japan
- Prior art keywords
- appearance
- molded product
- particles
- resin
- volume
- 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 - Lifetime
Links
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、カメラ、VTR、OA機器、電気カミソリ、化粧
品等の内・外装材、容器などに使用される樹脂成形品に
関する。TECHNICAL FIELD The present invention relates to a resin molded product used for an interior / exterior material such as a camera, a VTR, an OA device, an electric razor, and a cosmetic, a container, and the like.
〔従来の技術〕 従来より熱可塑性樹脂と光沢のある外観を賦与するため
の充填材として例えば金属粒子を混合、溶融成形した成
形品は数多く知られている。これら成形品には光沢賦与
粒子の形状により２つの類型がある。その第１は、特開
昭58-37045号公報で開示されているような微粉乃至超微
粉の金属粒子を充填することによって全面が一様な金属
調すなわちメタリック調の外観を呈する成形品である。
この成形品を射出成形により製造する場合、金型内での
溶融樹脂の流動断面は、第２図及び第３図に示したよう
に、流動過程（第２図）で流れ先端に金属粒子の含まれ
ない層22ができるため、流れ同志の合わさり目に樹脂だ
けのウエルドマーク23（第３図）が形成される。このウ
エルドマークは金属粒子を含まないために、光を吸収し
て黒く見え外観を著しく損なう。従って、この様な成形
品は、カメラ外装カバーのような高級モールド品として
は使用し得ないものであった。[Prior Art] Conventionally, many molded products have been known in which, for example, metal particles are mixed and melt-molded as a filler for imparting a glossy appearance with a thermoplastic resin. There are two types of these molded products depending on the shape of the gloss-imparting particles. The first one is a molded article which is filled with fine or ultrafine metal particles as disclosed in Japanese Patent Application Laid-Open No. 58-37045 and has a uniform metallic or metallic appearance on the entire surface. .
When this molded product is manufactured by injection molding, the flow cross section of the molten resin in the mold is, as shown in FIGS. 2 and 3, in the flow process (FIG. 2), at the tip of the flow of metal particles. Since the layer 22 which is not included is formed, the weld mark 23 (FIG. 3) made of only resin is formed at the joint between the flows. Since this weld mark does not contain metal particles, it absorbs light and appears black, and the appearance is significantly impaired. Therefore, such a molded product cannot be used as a high-grade molded product such as a camera exterior cover.
その第２の類型は平均相当径30μｍ以上で平均形状比1/
10以下の金属片状粉を用いたものである。この成形品
は、樹脂と金属片状粉との混練及び成形の際に片状粉が
せん断力を受け破壊されてしまう。破壊されなければ、
成形品のウエルドマークは目立ちにくくなるが、破壊さ
れると、やはり前述した第１の類型にみられるように、
ウエルドマークを目立たせる結果となる。The second type is an average equivalent diameter of 30 μm or more and an average shape ratio of 1 /
It uses a metal flaky powder of 10 or less. In this molded product, the flaky powder is destroyed by the shearing force during the kneading and molding of the resin and the flaky metal powder. If not destroyed
Weld marks on molded products are less noticeable, but when destroyed, as seen in the first type,
As a result, the weld mark becomes more noticeable.
因みに、平均相当径50μｍ、平均形状比1/10以下のアル
ミニウム片状粉の混練成形前後の粒度分布を第４図及び
第５図に示す。この場合も、ウエルドマークが目立つよ
うになり、複雑形状の高級モールド品に使用するのは難
しい。Incidentally, FIGS. 4 and 5 show the particle size distribution of aluminum flaky powder having an average equivalent diameter of 50 μm and an average shape ratio of 1/10 or less before and after kneading and molding. Also in this case, the weld mark becomes conspicuous, and it is difficult to use it in a high-quality molded product having a complicated shape.
また、ウエルドマークのほか、成形品外観不良の要因と
しては、ツヤムラ、ヒケ、シルバーストリーク等があ
る。例えば、基本肉厚2mmの成形品に、第６図に示した
1.5mmの局部的な薄肉部が存在すると、例えばポリカー
ボネート樹脂成形品の場合、外観部61に５〜10μｍの段
差が生じ、ツヤムラとして見える。また、基本肉厚2mm
の成形品に、第７図に示した3.0mmの局部的な厚肉部が
存在すると、やはり外観部71に５〜10μｍの段差が生
じ、ヒケとして目立つ。In addition to weld marks, factors causing poor appearance of molded products include gloss, sink marks, and silver streaks. For example, a molded product with a basic wall thickness of 2 mm is shown in Fig. 6.
If there is a local thin portion of 1.5 mm, for example, in the case of a polycarbonate resin molded product, a step difference of 5 to 10 μm occurs in the appearance portion 61, and it appears as a gloss unevenness. Also, the basic thickness is 2 mm
When the 3.0 mm local thick portion shown in FIG. 7 is present in the molded product, a step difference of 5 to 10 μm is also generated in the external appearance portion 71, which is conspicuous as a sink mark.
この様なツヤムラやヒケを目立たせないために、従来か
ら高型温度成形を行なうことが試みられてきたが、高型
温度成形を行なうと成形時間が長くなり、生産性が低下
するし、、ツヤムラやヒケは多少は目立たなくなるが、
完全に消し去ることはできない。In order to make such uneven gloss and sink marks inconspicuous, it has been attempted to perform high mold temperature molding from the past, but when high mold temperature molding is performed, the molding time becomes long and the productivity decreases, The gloss and sink marks are a little less noticeable,
It cannot be completely erased.
このため、外観不良を解消する手段として、塗装等の二
次加工を必要としたり、外観不良を出さないための設計
の調整を行なってきたが、製品の設計制約は非常に大き
くなっていた。Therefore, although secondary processing such as painting has been required as a means for eliminating the appearance defect and the design adjustment has been made to prevent the appearance defect, the design constraint of the product has become very large.
また、射出成形だけで最終成形品を得る場合のもう１つ
の問題として、樹脂自体の表面硬度が低く、キズがつき
易い点が挙げられる。一端キズがつくと、外観に著しい
影響を与え、高級感を損なうことが多く見られた。Another problem in obtaining the final molded product only by injection molding is that the surface hardness of the resin itself is low and is easily scratched. When scratched, it often had a noticeable effect on the appearance and impaired luxury.
本発明の第１の目的は、光沢賦与粒子を充填した従来の
樹脂成形品にみられるウエルドマーク等による外観不良
をなくした樹脂成形品を提供することにある。A first object of the present invention is to provide a resin molded product that eliminates the appearance defects due to weld marks and the like found in conventional resin molded products filled with gloss imparting particles.
本発明の第２の目的は、この様なウエルドマークをなく
すと共に、ツヤムラ、ヒケ、シルバーストリーク等によ
る外観不良を目立たなくさせ、しかもキズがついた場合
にも外観に著しい損傷を与えることのない樹脂成形品を
提供することにある。A second object of the present invention is to eliminate such weld marks and to make the appearance defects due to gloss unevenness, sink marks, silver streaks and the like inconspicuous, and not to cause significant damage to the appearance even when scratched. It is to provide a resin molded product.
本発明の第３の目的は、この様な外観不良をなくすと共
に、カメラ外装カバー、VTRカバー等の複雑形状の高級
モールド品にも使用し得る優れた外観、即ち晴天の夜空
に散りばめられて輝く銀河の如き（以下、銀河調とい
う）外観を有する樹脂成形品を提供することにある。A third object of the present invention is to eliminate such a defect in appearance, and to have an excellent appearance that can be used for high-quality molded products with complicated shapes such as camera exterior covers and VTR covers, that is, to be shined by being scattered in a clear night sky. It is to provide a resin molded product having a galactic-like (hereinafter, galactic-like) appearance.
本発明の第４の目的は、成形品の製品設計に際し、外観
不良を解消するための設計制約を排除することのできる
樹脂成形品を提供することにある。A fourth object of the present invention is to provide a resin molded product which can eliminate the design constraint for eliminating the defective appearance when designing the product of the molded product.
熱可塑性樹脂100容量部に対して、平均相当径10〜300μ
ｍ、平均形状比1/8〜１の光沢を有する粒子0.05〜5.0容
量部含有する組成物を用い、前記組成物を型で成形する
際、前記型内で組成物同士が合わさるようにして形成さ
れる樹脂成形品であって、反射率が前記光沢を有する粒
子を含まない状態よりも25〜80％高く、かつウエルドマ
ークのないことを特徴とする本発明の樹脂成形品によっ
て達成される。Average equivalent diameter 10-300μ for 100 parts by volume of thermoplastic resin
m, a composition containing 0.05 to 5.0 parts by volume of glossy particles having an average shape ratio of 1/8 to 1, and when the composition is molded in a mold, the compositions are formed so as to be combined in the mold. A resin molded product according to the present invention, which is characterized in that the reflectance is 25 to 80% higher than that in the state in which the particles having the gloss are not contained and there is no weld mark.
本発明で使用する前記光沢を有する粒子（以下、光沢粒
子という）は、平均相当径10〜300μｍ、平均形状比1/8
〜１の粒子である。The particles having gloss (hereinafter referred to as gloss particles) used in the present invention have an average equivalent diameter of 10 to 300 μm and an average shape ratio of 1/8.
~ 1 particles.
ここで平均相当径とは、光沢粒子の最長径と最短径の算
術平均を相当径とし、試験粒子群についてこの相当径を
平均した値をいう。相当径の測定は、成形品の状態乃至
は成形品を溶剤に溶かした状態で、ガラス板上に載せ、
粒子分布測定器ルーゼックス（商品名、日本レギュレー
タ（株）製）を用いて行なうことができる。Here, the average equivalent diameter refers to a value obtained by averaging the equivalent diameters of the test particle groups with the arithmetic mean of the longest diameter and the shortest diameter of the gloss particles being the equivalent diameter. To measure the equivalent diameter, place the molded article or the molded article in a solvent on a glass plate,
It can be carried out using a particle distribution measuring device Luzex (trade name, manufactured by Nippon Regulator Co., Ltd.).
また平均形状比とは、粒子の最長径と最短径との比、即
ち（最短径）／（最長径）の算術平均である。平均形状
比の算出には、やはり粒子分布測定器ルーゼックス等を
用いることができる。The average shape ratio is the ratio of the longest diameter to the shortest diameter of the particles, that is, the arithmetic average of (shortest diameter) / (longest diameter). For the calculation of the average shape ratio, the particle distribution measuring device Luzex or the like can be used.
光沢粒子を球と仮定し、球の中心間距離が全て同じに分
散している系においては、光沢粒子の平均間隙は次式
（１）で表わされる。In a system in which the glossy particles are assumed to be spheres and the distances between the centers of the spheres are all the same, the average gap of the glossy particles is expressed by the following equation (1).
式（１）中、 D:光沢粒子の平均間隙 R:光沢粒子の平均相当径 V:熱可塑性樹脂と光沢粒子の合計体積に対する全光沢 粒子の体積比 Ｄはウエルドマークの目立ちぐあいの指数であり、Ｄが
大きくなるとウエルドマークは目立ちにくくなる。即
ち、通常メタリックモールドのウエルドマークの巾は30
μｍ以下であるため、Ｄを 35μｍより大きくすればウエルドマークは目立ちにくく
なる。 In the formula (1), D: average gap of glossy particles R: average equivalent diameter of glossy particles V: volume ratio of all glossy particles to total volume of thermoplastic resin and glossy particles D is an index of conspicuousness of weld marks , D becomes larger, the weld mark becomes less noticeable. That is, the width of the weld mark of a metallic mold is usually 30.
Since it is less than μm, the weld mark becomes less noticeable when D is made larger than 35 μm.
Ｄが35μｍ以上となり、しかも銀河調外観を呈するのに
最適な平均担当径は、10〜300μｍである。平均相当径
が10μｍ未満であると、ウエルドマーク等外観不良が目
立つと共に、一つ一つの粒子が視覚で判別しがたく、単
に色調を変えるだけになる。またキズを目立たせなくす
る効果も小さい。The optimal average diameter for D to be 35 μm or more and to give a galactic appearance is 10 to 300 μm. If the average equivalent diameter is less than 10 μm, the appearance defects such as weld marks are conspicuous, and it is difficult to visually identify each particle, and the color tone is simply changed. Also, the effect of making the scratches inconspicuous is small.
平均相当径が300μｍを超えると、光沢粒子が異物の様
に見え外観バランスを損ない外観は得られなくなる。平
均相当径の特に好ましい範囲は、20〜100μｍである。If the average equivalent diameter exceeds 300 μm, the glossy particles look like foreign matter and the appearance balance is impaired, and the appearance cannot be obtained. A particularly preferable range of the average equivalent diameter is 20 to 100 μm.
また、本発明で使用する光沢粒子の平均形状比を1/8〜
１としたのは、1/8未満であると、混練成形の際光沢粒
子の破壊が起き易く、ウエルドマークが目立ち易くなる
ためである。平均形状比は、特に1/3〜１のときが好ま
しい。Further, the average shape ratio of the glossy particles used in the present invention is 1/8 to
The reason for setting 1 is that if it is less than 1/8, the gloss particles are likely to be broken during kneading and molding, and the weld marks are apt to stand out. The average shape ratio is particularly preferably 1/3 to 1.
更に、光沢粒子の含量は熱可塑性樹脂100容量部に対し
て0.05〜5.0容量部であることが必要であるが、とりわ
け0.3〜3.0容量部であることが好ましい。光沢粒子の量
が0.05容量部より少ないと粒子がまばらになりすぎて外
観不良やキズの目立ちをなくす効果が余り得られない。
5.0容量部より多いと粒子の色調が成形品の色調を決め
るような状態になり銀河調外観を作り得ない。Further, the content of the glossy particles is required to be 0.05 to 5.0 parts by volume with respect to 100 parts by volume of the thermoplastic resin, and particularly preferably 0.3 to 3.0 parts by volume. If the amount of the glossy particles is less than 0.05 parts by volume, the particles become too sparse and the effect of eliminating the appearance defects and the conspicuous scratches cannot be obtained.
If it is more than 5.0 parts by volume, the color tone of the particles will determine the color tone of the molded product and the galactic appearance cannot be produced.
また、本発明の樹脂成形品において、外観不良をなく
し、優れた外観を形成するためのもう１つの必須の条件
として、樹脂成形品の反射率が、光沢粒子を含まない状
態よりも25〜80％高くなっていることが挙げられる。Further, in the resin molded product of the present invention, as another essential condition for eliminating the poor appearance and forming an excellent appearance, the reflectance of the resin molded product is 25 to 80 as compared with the state where the glossy particles are not contained. It can be mentioned that it is getting higher.
ここで、反射率は、ホトニックセンサー（商品名，フオ
トニクス社製）を用い、成形品を支持台に載せプローブ
を垂直に配置し光を投光し、反射した光を測定する方法
で測定した反射率をいう。Here, the reflectance was measured by a method in which a photonic sensor (trade name, manufactured by Photonics) was used, a molded product was placed on a support base, a probe was vertically arranged, light was projected, and the reflected light was measured. Refers to the reflectance.
この反射率の上昇率が25％未満では、外観不良やキズの
目立ちを解消するのに不十分であり、また銀河調外観を
呈するのが不完全になる。When the increase rate of the reflectance is less than 25%, it is insufficient to eliminate the appearance defect and the conspicuous scratch, and the appearance of the galactic tone becomes incomplete.
本発明に使用する光沢粒子は、表面に光沢を有している
粒子であればその基材を問わない。例えば少なくとも表
層部分が、アルミニウム、すず、銅、鉄などの金属、こ
れらの金属を基質とする黄銅、ステンレス、等の合金、
マイカ、ある種の貝殻、複屈折を起す様な無機乃至は有
機ポリマー結晶、けい光体などからなる光沢粒子を使用
することができる。The base material of the glossy particles used in the present invention is not limited as long as it has a glossy surface. For example, at least the surface layer portion is a metal such as aluminum, tin, copper, or iron, brass using these metals as a substrate, an alloy such as stainless steel,
It is possible to use glossy particles made of mica, some kinds of shells, inorganic or organic polymer crystals that cause birefringence, and phosphors.
例えば、アルミニウム粒子を使用すると銀色のキラキラ
した外観、黄銅粒子を使用すると金色のしっとりした外
観が得られる。また、金属粒子の表面の光沢観を変化さ
せることでも多様な外観を形成することができる。For example, the use of aluminum particles provides a silvery, glittery appearance, and the use of brass particles provides a golden, moistened appearance. Also, various appearances can be formed by changing the gloss appearance of the surface of the metal particles.
本発明において使用される熱可塑性樹脂は例えばアクリ
ル樹脂、ポリスチレン樹脂、ポリプロピレン等ポリオレ
フィン系樹脂、塩化ビニル樹脂、メチルペンテン樹脂、
ポリカーボネート樹脂、共重合ポリエステル、共重合ポ
リアミド、ABS等の樹脂で相互に混合されていたり着色
されていてもよい。また、本発明の樹脂成形品に着色剤
を例えば樹脂100容量部に対して0.1〜12.0容量部混合す
ることで更に多様な外観を形成できる。The thermoplastic resin used in the present invention is, for example, acrylic resin, polystyrene resin, polyolefin resin such as polypropylene, vinyl chloride resin, methylpentene resin,
Resins such as polycarbonate resin, copolyester, copolyamide, and ABS may be mixed with each other or may be colored. Further, by mixing the resin molded product of the present invention with a coloring agent in an amount of 0.1 to 12.0 parts by volume with respect to 100 parts by volume of the resin, more various appearances can be formed.
また、本発明の効果を損わない範囲内で、熱可塑性樹脂
に配合しうる各種の安定剤、離型剤、帯電防止剤、難燃
剤等を添加することができる。Further, various stabilizers, mold release agents, antistatic agents, flame retardants and the like which can be blended with the thermoplastic resin can be added within a range that does not impair the effects of the present invention.
本発明の樹脂成形品は、射出成形や射出圧縮成形で製造
される場合、特に効果を発揮するものであるが、押出し
成形など他の溶融成形法でもよい。The resin molded product of the present invention exerts a particular effect when manufactured by injection molding or injection compression molding, but other melt molding methods such as extrusion molding may be used.
メタリック外観の成形においては、外観不良の１つであ
るシルバーストリークが発生し易いことが以前より言わ
れているが、乾燥時間を２時間以上とすること及び金型
温度を下げないようにすることを守れば、銀河調外観の
場合シルバーストリークは発生しない。また金属調外観
の場合、ピンポイントゲートはシルバーストリークを発
生させ易いが、本発明の銀河調外観の場合は、ピンポイ
ントゲートでもシルバーストリークは発生しない。It has been said that silver streak, which is one of the poor appearances, is likely to occur in the molding of metallic appearance, but it is necessary to set the drying time to 2 hours or more and not to lower the mold temperature. If you observe the above, silver streaks will not occur in the case of galactic appearance. Further, in the case of the metallic appearance, the pinpoint gate easily causes silver streak, but in the case of the galactic appearance of the present invention, the silver streak does not occur even in the pinpoint gate.
熱可塑性樹脂と光沢粒子は予め樹脂を溶融させて混合し
た組成物、例えばペレットとして使用することが、成形
品中に光沢粒子を均一に分散させるため好ましい。It is preferable to use the thermoplastic resin and the glossy particles as a composition in which the resin is melted and mixed in advance, for example, as a pellet because the glossy particles are uniformly dispersed in the molded article.
以下に実施例を示し、本発明を更に具体的に説明する。Hereinafter, the present invention will be described more specifically with reference to examples.
実施例１ 第１図（（ａ）平面図（ｂ）Ａ−Ａ′断面図）に示した
樹脂成形品１を射出成形した。成形品１はたて100mm、
よこ80mmの平板で、基本肉厚が1.6mm、厚肉部2,3の厚み
がそれぞれ2.6mm、2.0mmで薄肉部4,5の厚みがそれぞれ
1.2mm、0.8mmであり、着色ABS樹脂100容量部に対し、平
均相当径52μｍ、平均形状比1/3.7のアルミニウム粒子
を1.0容量部含有し、下記の成形条件により成形され
た。Example 1 A resin molded product 1 shown in Fig. 1 ((a) plan view (b) AA 'sectional view) was injection-molded. Molded product 1 is 100 mm long,
A flat plate 80 mm wide, with a basic thickness of 1.6 mm, thick parts 2 and 3 of 2.6 mm and 2.0 mm, and thin parts 4 and 5, respectively.
It was 1.2 mm and 0.8 mm, and 1.0 volume part of aluminum particles having an average equivalent diameter of 52 μm and an average shape ratio of 1 / 3.7 was contained in 100 volume parts of the colored ABS resin, and molded under the following molding conditions.
得られた成形品の反射率は、アルミニウム粒子を含まな
い状態よりも56.7％高められており、ウエルドマーク、
ツヤムラ、ヒケ等の外観不良もなく、キズもつきにく
く、外観としてもカメラカバーに十分使用できるキラキ
ラと輝く高級外観が得られた。The reflectance of the obtained molded product is increased by 56.7% as compared with the state where aluminum particles are not contained.
There were no defects such as gloss and sink marks, scratches were not likely to occur, and the appearance was a glittering and high-class appearance that could be sufficiently used for a camera cover.
実施例2,3 使用したアルミ粒子の平均相当径を92μｍ又は210μｍ
に変えた以外は実施例１と同様にして成形品を得た。得
られた成形品は、実施例１と同様に外観不良がなく、高
級な外観を呈した。Examples 2 and 3 The average equivalent diameter of the used aluminum particles is 92 μm or 210 μm.
A molded product was obtained in the same manner as in Example 1 except that the above was changed. The obtained molded product did not have a defective appearance as in Example 1 and had a high-grade appearance.
実施例4,5 アルミ粒子の含量をABS樹脂100容量部に対して、0.1容
量部又は2.5容量部に変えた以外は実施例１と同様にし
て成形品を得た。得られた成形品は、実施例１と同様に
外観不良がなく、高級な外観を呈した。Examples 4, 5 Molded articles were obtained in the same manner as in Example 1 except that the content of aluminum particles was changed to 0.1 parts by volume or 2.5 parts by volume with respect to 100 parts by volume of ABS resin. The obtained molded product did not have a defective appearance as in Example 1 and had a high-grade appearance.
実施例6,7 アルミ粒子の平均形状比を1/7.2又は1/1.6に変えた以外
は実施例１と同様にして成形品を得た。得られた成形品
は、実施例１と同様に外観不良がなく、高級な外観を呈
した。Examples 6 and 7 Molded articles were obtained in the same manner as in Example 1 except that the average shape ratio of aluminum particles was changed to 1 / 7.2 or 1 / 1.6. The obtained molded product did not have a defective appearance as in Example 1 and had a high-grade appearance.
実施例８ 着色ポリカーボネート樹脂100容量部と平均形状比1/1.6
（平均相当径42μｍ）のアルミ粒子を1.5容量部の材料
を用い実施例１の成形品を作った、得られた成形品の反
射率上昇率は28％であった。得られた成形品は実施例１
と同様に外観不良がなく、高級外観を呈した。Example 8 100 parts by volume of colored polycarbonate resin and average shape ratio of 1 / 1.6
A molded article of Example 1 was produced by using 1.5 parts by volume of aluminum particles having an average equivalent diameter of 42 μm. The obtained molded article had a reflectance increase rate of 28%. The obtained molded product was obtained in Example 1
Similar to the above, there was no appearance defect, and a high-grade appearance was exhibited.
比較例１ 着色ABS樹脂100容量部に対し、平均相当径８μｍ、平均
形状比1/1.4のアルミニウム粒子を0.03容量部含有し、
実施例１と同様の成形条件により成形した。Comparative Example 1 100 parts by volume of the colored ABS resin contained 0.03 parts by volume of aluminum particles having an average equivalent diameter of 8 μm and an average shape ratio of 1 / 1.4,
It was molded under the same molding conditions as in Example 1.
得られた成形品の反射率はアルミニウム粒子を含まない
状態より７％高められていた。The reflectance of the obtained molded product was increased by 7% as compared with the state in which no aluminum particles were contained.
しかし、ウエルド、ツヤムラ、ヒケ等が目立ちキズつき
方も通常のABSとさ程変わらず、高級外観を呈するもの
としては使用しえないものであった。However, welds, gloss, sink marks, etc. were noticeably scratched and were not much different from ordinary ABS, and could not be used as those exhibiting a high-grade appearance.
比較例２ 実施例１と同様なことをアルミニウム粒子を含まないAB
S樹脂にて行った。ツヤムラ、ヒケ等がはっきりと目立
ち、製品としては使用しえない程度のものであった。
（表面硬度3B） 〔発明の効果〕 本発明の樹脂成形品は、ウエルドマークがなく、ツヤム
ラ、ヒケ、シルバーストリーク等による外観不良がな
く、しかもキズによる外観の著しい損傷がなく、従来達
成し得なかった、カメラ外装カバー、タイプライター外
装、OA機器外装等の高級モールド品にも使用し得る銀河
調外観を呈し、プラスチック外観デザインの枠を広げる
ことが可能となる。特に、染料着色された熱可塑性樹脂
を使用した場合にその効果は著しく、複雑形状品にも応
用できる。Comparative Example 2 The same as Example 1 except that aluminum particles were not included in AB
S resin was used. The gloss and sink marks were clearly conspicuous and could not be used as a product.
(Surface hardness 3B) [Effect of the invention] The resin molded product of the present invention has no weld marks, has no defective appearance due to gloss unevenness, sink marks, silver streaks, etc., and has no significant damage to the external appearance due to scratches, and can be achieved conventionally. It has a galactic-like appearance that can be used for high-grade molded products such as camera exterior covers, typewriter exteriors, and OA equipment exteriors, and it is possible to expand the scope of plastic exterior design. In particular, when a dye-colored thermoplastic resin is used, its effect is remarkable, and it can be applied to a product having a complicated shape.
また、外観不良を緩和するための設計の制約が解除さ
れ、設計の自由度を広げられ、生産性も高い。Further, the restriction on design for alleviating the appearance defect is lifted, the degree of freedom in design is expanded, and the productivity is high.
第１図（ａ）は実施例において作製した本発明の樹脂成
形品の平面図、第１図（ｂ）は第１図（ａ）中Ａ−Ａ′
断面図である。 第２図は従来の金属充填樹脂の流動断面図、第３図は金
属充填樹脂の成形後断面図、第４図及び第５図は平均形
状比1/10以下の光沢粒子を用いた場合の成形前後におけ
る粒度分布（頻度分布）を示すグラフである。 第６図及び第７図は、それぞれ、樹脂成形品におけるツ
ヤムラ、ヒケ等の発生箇所を示すための断面図である。 １……樹脂成形品、2,3……厚肉部、4,5……薄肉部、21
……金属粉、22……樹脂のみの層、23……ウエルドマー
ク。FIG. 1 (a) is a plan view of the resin molded product of the present invention produced in the embodiment, and FIG. 1 (b) is AA 'in FIG. 1 (a).
FIG. FIG. 2 is a flow cross-sectional view of a conventional metal-filled resin, FIG. 3 is a cross-sectional view of a metal-filled resin after molding, and FIGS. 4 and 5 show the case where gloss particles having an average shape ratio of 1/10 or less are used. 6 is a graph showing a particle size distribution (frequency distribution) before and after molding. FIG. 6 and FIG. 7 are cross-sectional views showing the locations where glossiness, sink marks, etc. occur in the resin molded product. 1 …… Resin molded product, 2,3 …… Thick part, 4,5 …… Thin part, 21
…… Metal powder, 22 …… Resin-only layer, 23 …… Weld mark.
Claims (1)
当径10〜300μｍ、平均形状比1/8〜１の光沢を有する粒
子0.05〜5.0容量部含有する組成物を用い、前記組成物
を型で成形する際、前記型内で組成物同士が合わさるよ
うにして形成される樹脂成形品であって、反射率が前記
光沢を有する粒子を含まない状態よりも25〜80％高く、
かつウエルドマークのないことを特徴とする樹脂成形
品。1. A composition containing 0.05 to 5.0 parts by volume of particles having gloss having an average equivalent diameter of 10 to 300 μm and an average shape ratio of 1/8 to 1 with respect to 100 parts by volume of a thermoplastic resin. When molding with a mold, a resin molded product formed so that the compositions are combined with each other in the mold, the reflectance is 25 to 80% higher than in a state not containing particles having the gloss,
A resin molded product characterized by no weld mark.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60236390A JPH0699594B2 (en) | 1985-10-24 | 1985-10-24 | Resin molded product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60236390A JPH0699594B2 (en) | 1985-10-24 | 1985-10-24 | Resin molded product |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6296566A JPS6296566A (en) | 1987-05-06 |
| JPH0699594B2 true JPH0699594B2 (en) | 1994-12-07 |
Family
ID=17000063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60236390A Expired - Lifetime JPH0699594B2 (en) | 1985-10-24 | 1985-10-24 | Resin molded product |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0699594B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011052737A1 (en) * | 2009-10-30 | 2011-05-05 | 出光興産株式会社 | Polycarbonate resin composition, polycarbonate resin molded article, and manufacturing method therefor |
| WO2011052738A1 (en) * | 2009-10-30 | 2011-05-05 | 出光興産株式会社 | Polycarbonate resin composition, polycarbonate resin molded article, and manufacturing method therefor |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2540824Y2 (en) * | 1992-10-08 | 1997-07-09 | 株式会社サトー | Label pitch switching device for label pasting machines |
| JP2825722B2 (en) * | 1993-01-20 | 1998-11-18 | 帝人化成株式会社 | Reinforced aromatic polycarbonate resin composition |
| JP4169547B2 (en) | 2002-08-22 | 2008-10-22 | 株式会社プライムポリマー | Resin composition for automobile parts |
| US7488764B2 (en) | 2003-01-23 | 2009-02-10 | Sabic Innovative Plastics Ip B.V. | Polymer encapsulation of high aspect ratio materials and methods of making same |
| DE10317862A1 (en) | 2003-04-16 | 2004-11-04 | Basf Ag | Use of coated metallic luster pigments for pigmenting high molecular weight materials |
| JP4892521B2 (en) * | 2008-06-30 | 2012-03-07 | 株式会社日立製作所 | Combustible gas sensor |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50129651A (en) * | 1974-04-04 | 1975-10-14 | ||
| JPS5136242A (en) * | 1974-09-21 | 1976-03-27 | Toyo Aluminium Kk | |
| JPS54114534A (en) * | 1978-02-28 | 1979-09-06 | Fukuda Metal Foil Powder | Metal powder pigment for coloring synthetic resin and synthetic resin composition using same |
| JPS57126848A (en) * | 1981-01-30 | 1982-08-06 | Asahi Chem Ind Co Ltd | Resin composition having metallic luster |
-
1985
- 1985-10-24 JP JP60236390A patent/JPH0699594B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011052737A1 (en) * | 2009-10-30 | 2011-05-05 | 出光興産株式会社 | Polycarbonate resin composition, polycarbonate resin molded article, and manufacturing method therefor |
| WO2011052738A1 (en) * | 2009-10-30 | 2011-05-05 | 出光興産株式会社 | Polycarbonate resin composition, polycarbonate resin molded article, and manufacturing method therefor |
| JP2011094070A (en) * | 2009-10-30 | 2011-05-12 | Idemitsu Kosan Co Ltd | Polycarbonate resin composition, polycarbonate resin molded article, and method for manufacturing the molded article |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6296566A (en) | 1987-05-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5382893B2 (en) | Synthetic resin composition for metal texture molded article and injection molding method and molded article using the same | |
| JPH0699594B2 (en) | Resin molded product | |
| US10272469B2 (en) | Process for metallising a polymeric surface | |
| JPS5942022B2 (en) | ABS resin composition | |
| JPH08239505A (en) | Resin composition | |
| JPH11279434A (en) | Metallic pigment, composition for metallic tone molding product and metallic tone molding product | |
| JPH0455462B2 (en) | ||
| JPH0699593B2 (en) | Resin molded product | |
| JP3994245B2 (en) | Aluminum flakes for resin kneading and resin moldings | |
| JP4948722B2 (en) | Resin composition having metallic luster | |
| JPS6149817A (en) | Resin-molded article | |
| JPS6295345A (en) | Molded article of resin | |
| JP3054029B2 (en) | Molded product made of polystyrene resin composition | |
| JP2694501B2 (en) | Synthetic resin composition | |
| JP3456252B2 (en) | Synthetic resin composition for injection molding or injection compression molding and method for producing resin molded article | |
| JP3171085B2 (en) | Synthetic resin molded product | |
| JP2018034428A (en) | Resin molded product | |
| JP2004237551A (en) | Resin composition for metallic luster-toned writing utensil member and writing utensil member using the same | |
| JPH11192637A (en) | Resin molded article and its molding | |
| Hong et al. | Influence of surface topography, crystallinity, and thermal conductivity on reflectance and color of metallic‐effect high‐density polyethylene parts filled with aluminum pigments | |
| JP2910579B2 (en) | Metallic pigment and synthetic resin composition containing the same | |
| JPH05112668A (en) | Synthetic resin composition | |
| JPH1192676A (en) | Resin composition and resin molded article | |
| JPS63297430A (en) | Synthetic polymer molded article | |
| JP3787905B2 (en) | Multi-layer injection molded products |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |