JPH0581419B2 - - Google Patents
Info
- Publication number
- JPH0581419B2 JPH0581419B2 JP63264973A JP26497388A JPH0581419B2 JP H0581419 B2 JPH0581419 B2 JP H0581419B2 JP 63264973 A JP63264973 A JP 63264973A JP 26497388 A JP26497388 A JP 26497388A JP H0581419 B2 JPH0581419 B2 JP H0581419B2
- Authority
- JP
- Japan
- Prior art keywords
- synthetic resin
- resin material
- mold
- injected
- molded product
- 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
- 229920003002 synthetic resin Polymers 0.000 claims description 96
- 239000000057 synthetic resin Substances 0.000 claims description 96
- 239000000463 material Substances 0.000 claims description 83
- 238000000465 moulding Methods 0.000 claims description 23
- 238000000034 method Methods 0.000 claims description 20
- 238000002347 injection Methods 0.000 description 11
- 239000007924 injection Substances 0.000 description 11
- 239000011162 core material Substances 0.000 description 4
- 239000011257 shell material Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 235000019589 hardness Nutrition 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000003380 propellant Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は合成樹脂の成形方法に関するものであ
り、特に、硬度或いは材料等の異なる合成樹脂材
料からなる、所謂、サンドイツチ成形する合成樹
脂の成形方法に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for molding synthetic resin, and in particular, to a method for molding synthetic resin using so-called sandwich molding, which is made of synthetic resin materials with different hardnesses or materials. It is about the method.
［従来の技術］
この種の合成樹脂の成形方法として、特公昭52
−11336号公報に掲載の技術を挙げることができ
る。[Prior art] As a molding method for this type of synthetic resin,
One example is the technology published in Publication No. 11336.
上記公報に掲載の技術は、射出ノズルで型の中
の空隙へ最初に非多泡状の外被材料を射出し、更
に、推進剤（発泡剤）で多泡状になる内核材料を
射出して非多泡状の外被材料と多泡状の内核材料
からなる合成樹脂成形品を射出成形によつて作る
方法において、最初に外皮材料の初期流だけを射
出し、次いで、連続的に外被材料を射出すると共
にこの外被材料流で包囲される内核材料全量をも
同時に射出するものである。 The technology described in the above publication first injects a non-porous outer covering material into the void in the mold using an injection nozzle, and then injects an inner core material that becomes foamy using a propellant (foaming agent). In this method, a synthetic resin molded product consisting of a non-porous outer shell material and a porous inner core material is made by injection molding. First, only an initial flow of the outer shell material is injected, and then the outer shell material is continuously injected. When the material to be covered is injected, the entire amount of the inner core material surrounded by the flow of the outer covering material is also injected at the same time.
この種の合成樹脂の成形方法によれば、硬質合
成樹脂材料の周囲を軟質合成樹脂材料で包囲した
断面形状の成形品を得ようとすると、第２図に従
来の合成樹脂の成形方法による略Ｙ字状の成形品
の断面図に示すように、所定の型に軟質合成樹脂
材料２を射出した後、硬質合成樹脂材料１を射出
すると、硬質合成樹脂材料１が全端部まで行き渡
り、例えば、第２図に示す略Ｙ字状の成形品の下
部を軟質合成樹脂材料２のみで成形するには、第
３図の従来の他の合成樹脂の成形方法による略Ｙ
字状の成形品の断面図のように成形する必要があ
つた。 According to this type of synthetic resin molding method, when trying to obtain a molded product with a cross-sectional shape in which a hard synthetic resin material is surrounded by a soft synthetic resin material, the outline of the conventional synthetic resin molding method is shown in Fig. 2. As shown in the cross-sectional view of a Y-shaped molded product, when a soft synthetic resin material 2 is injected into a predetermined mold and then a hard synthetic resin material 1 is injected, the hard synthetic resin material 1 spreads to all ends, for example. , in order to mold the lower part of the generally Y-shaped molded product shown in FIG.
It was necessary to mold the product as shown in the cross-sectional view of the letter-shaped molded product.
即ち、第３図ａに示すように、上部成形型に軟
質合成樹脂材料２Ａを射出した後、硬質合成樹脂
材料１Ａを射出して上部成形品Ａを形成する。前
記成形した上部成形品Ａの金型、即ち、下部成形
型に装着し、第３図ｂに示すように、軟質合成樹
脂材料２Ｂを射出して下部成形品Ｂを形成するこ
とにより、前記上部成形品Ａと下部成形品Ｂを接
合して一体化することにより、略Ｙ字状の成形品
の下部を軟質合成樹脂材料２で成形することがで
きた。 That is, as shown in FIG. 3a, after injecting the soft synthetic resin material 2A into the upper mold, the hard synthetic resin material 1A is injected to form the upper molded product A. The upper molded article A is mounted in the mold of the upper molded article A, that is, the lower mold, and as shown in FIG. 3b, the soft synthetic resin material 2B is injected to form the lower molded article B. By joining and integrating the molded product A and the lower molded product B, it was possible to mold the lower part of the approximately Y-shaped molded product with the soft synthetic resin material 2.
［発明が解決しようとする課題］
しかし、上記のごとく構成された合成樹脂の成
形方法は、上部成形品Ａを下部成形品Ｂを独立成
形し、その後一体化する必要性があり、作業能率
が良くなかつた。また、上部成形品Ａと下部成形
品Ｂを独立成形し、その後一体化した場合には、
両者間に接合によるラインＣが発生し、見栄えが
良くなかつた。[Problems to be Solved by the Invention] However, in the synthetic resin molding method configured as described above, it is necessary to separately mold the upper molded product A and the lower molded product B and then integrate them, which reduces work efficiency. It wasn't good. In addition, when upper molded product A and lower molded product B are molded independently and then integrated,
A line C was formed between the two due to the bonding, and the appearance was not good.
そこで、本発明に先に射出された合成樹脂材料
中に、後から他の合成樹脂材料を射出する合成樹
脂の成形方法において、後から射出した合成樹脂
材料の移動を任意の箇所で停止できる合成樹脂の
成形方法の提供を課題とするものである。 Therefore, in a synthetic resin molding method in which another synthetic resin material is later injected into a synthetic resin material that has been injected first, the present invention is a synthetic resin that can stop the movement of the later injected synthetic resin material at any point. The object of the present invention is to provide a method for molding resin.
［課題を解決するための手段］
本発明にかかる合成樹脂の成形方法は、所定の
軟質合成樹脂材料を金型に射出した後、他の硬質
合成樹脂材料を、再度、金型に射出して、後に射
出した硬質合成樹脂材料を先に射出した軟質合成
樹脂材料で包囲するとき、意匠面の反対側の面を
形成する金型側のみに、流動抵抗を増加する突部
からなる高流動抵抗箇所を設け、後に射出した硬
質合成樹脂材料の移動のみを制限して射出するも
のである。[Means for Solving the Problems] The synthetic resin molding method according to the present invention includes injecting a predetermined soft synthetic resin material into a mold, and then injecting another hard synthetic resin material into the mold again. , when the hard synthetic resin material injected later is surrounded by the soft synthetic resin material injected first, high flow resistance consisting of protrusions that increase flow resistance is created only on the mold side that forms the surface opposite to the design surface. A location is provided to restrict only the movement of the hard synthetic resin material that is subsequently injected.
［作用］
本発明においては、所定の軟質合成樹脂材料を
金型に射出した後、他の硬質合成樹脂材料を、再
度、金型に射出して、後に射出した硬質合成樹脂
材料を先に射出した軟質合成樹脂材料で包囲す
る。このとき、前記金型に射出した硬質合成樹脂
材料の流動抵抗が増加する箇所を設けることによ
り、後に射出した硬質合成樹脂材料の移動速度が
低下し、結果的に硬質合成樹脂材料の移動を制限
できる。なお、先に射出された所定の軟質合成樹
脂材料は金型内が空洞になつているから、その際
の流動抵抗は比較的低抵抗となる。[Operation] In the present invention, after a predetermined soft synthetic resin material is injected into a mold, another hard synthetic resin material is again injected into the mold, and the hard synthetic resin material injected later is injected first. surrounded by soft synthetic resin material. At this time, by providing a portion in the mold where the flow resistance of the injected hard synthetic resin material increases, the movement speed of the later injected hard synthetic resin material decreases, and as a result, the movement of the hard synthetic resin material is restricted. can. Note that since the predetermined soft synthetic resin material injected first has a cavity inside the mold, the flow resistance at that time is relatively low.
［実施例］ ここで、本発明の実施例について説明する。[Example] Examples of the present invention will now be described.
第１図は本発明の一実施例の合成樹脂の成形方
法による略Ｙ字状の成形品の断面図である。 FIG. 1 is a sectional view of a substantially Y-shaped molded product produced by a synthetic resin molding method according to an embodiment of the present invention.
図において、金型１１及び金型１２は割型であ
り、金型１３は上型である。前記金型１１及び金
型１２、金型１３で形成される型空間へ合成樹脂
材料を射出する注入口は、図示していないが、第
１図の後方上部から行なわれるものである。前記
金型１１及び金型１２で形成される型空間には、
意匠面を形成する金型１１の反対側の金型１２に
合成樹脂材料の流動抵抗を増加させる突部１２ａ
が形成されている。また、硬質合成樹脂材料１は
軟質合成樹脂材料２に包囲される芯材となるもの
である。 In the figure, molds 11 and 12 are split molds, and mold 13 is an upper mold. Although not shown, an injection port for injecting the synthetic resin material into the mold space formed by the mold 11, mold 12, and mold 13 is provided from the rear upper part of FIG. In the mold space formed by the mold 11 and the mold 12,
A protrusion 12a that increases the flow resistance of the synthetic resin material on the mold 12 on the opposite side of the mold 11 that forms the design surface
is formed. Further, the hard synthetic resin material 1 serves as a core material surrounded by the soft synthetic resin material 2.
まず、この種の形状の成形品の射出成形につい
て説明する。 First, injection molding of a molded product having this type of shape will be explained.
金型１１または金型１２の図示しない注入口か
ら軟質合成樹脂材料２を射出する。この射出によ
つて軟質合成樹脂材料２は注入口方向ａから成形
品右上部を成形する型空間ｂの一部及び成形品右
上部を成形する型空間ｃの一部に流動する。同時
に、軟質合成樹脂材料２は注入口方向ａから、意
匠面を形成する金型１１と金型１２の合成樹脂材
料の流動抵抗を増加させた突部１２ａが存在する
高流動抵抗箇所ｄを通り、成形品下部を成形する
型空間ｅの一部に移動する。 The soft synthetic resin material 2 is injected from an injection port (not shown) of the mold 11 or the mold 12. By this injection, the soft synthetic resin material 2 flows from the injection port direction a into a part of the mold space b where the upper right part of the molded product is molded and a part of the mold space c where the upper right part of the molded product is molded. At the same time, the soft synthetic resin material 2 passes from the injection port direction a through a high flow resistance point d where there are protrusions 12a that increase the flow resistance of the synthetic resin material of the molds 11 and 12 forming the design surface. , move to a part of the mold space e where the lower part of the molded product is to be molded.
次に、前記金型１１または金型１２の図示しな
い注入口から硬質合成樹脂材料１を射出する。硬
質合成樹脂材料１は軟質合成樹脂材料２を注入口
方向ａから成形品左上部を成形する型空間ｂ側及
び成形品右上部を成形する型空間Ｃ側に押圧し、
硬質合成樹脂材料１は成形品左上部を成形する型
空間ｂ側及び成形品右上部を成形する型空間ｃ側
に移動する。同時に、硬質合成樹脂材料１は軟質
合成樹脂材料２を注入口方向ａから成形品下部ｅ
を成形する空間方向に押圧し、注入口方向ａから
高流動抵抗箇所ｄ方向に移動する。 Next, the hard synthetic resin material 1 is injected from an injection port (not shown) of the mold 11 or the mold 12. The hard synthetic resin material 1 presses the soft synthetic resin material 2 from the injection port direction a toward the mold space b side where the upper left part of the molded product is molded and the mold space C side where the upper right part of the molded product is molded,
The hard synthetic resin material 1 moves to the mold space b side where the upper left part of the molded product is molded and to the mold space c side where the upper right part of the molded product is molded. At the same time, the hard synthetic resin material 1 transfers the soft synthetic resin material 2 from the injection port direction a to the lower part e of the molded product.
is pressed in the direction of the space to be molded, and moved from the injection port direction a to the high flow resistance point d direction.
ところが、前記意匠面を成形する金型１１と金
型１２の合成樹脂材料の流動抵抗を増加させた突
部１２ａが存在する高流動抵抗箇所ｄは、先に射
出した軟質合成樹脂材料２が注入口方向ａから成
形品下部ｅを成形する空間方向に流動する場合に
は、その流動断面積が意匠面を成形する金型１１
と金型１２の突部１２ａが形成する断面となり、
比較的低抵抗状態にある。これに対して、一旦、
軟質合成樹脂材料２が注入口方向ａから成形品下
部ｅを成形する空間方向に流動した後は、軟質合
成樹脂材料２の粘性が意匠面を成形する金型１１
と金型１２の合成樹脂材料の流動抵抗を増加させ
た突部１２ａが形成する断面の流動抵抗を大きく
左右し、特に、金型１２の突部１２ａはその表面
積が大きく、軟質合成樹脂材料２の冷却が進むこ
とから、前記意匠面を形成する金型１１と金型１
２の合成樹脂材料の流動抵抗を増加させた突部１
２ａが形成する断面の流動抵抗は高い流動抵抗値
となる。 However, in the high flow resistance area d where the protrusion 12a that increases the flow resistance of the synthetic resin material of the molds 11 and 12 for molding the design surface is present, the soft synthetic resin material 2 injected earlier is When the flow flows from the inlet direction a to the space direction in which the lower part e of the molded product is molded, the cross-sectional area of the flow is the mold 11 that molds the design surface.
and the cross section formed by the protrusion 12a of the mold 12,
It is in a relatively low resistance state. On the other hand, once
After the soft synthetic resin material 2 flows from the injection port direction a to the space direction in which the lower part e of the molded product is molded, the viscosity of the soft synthetic resin material 2 flows into the mold 11 for molding the designed surface.
The protrusions 12a, which increase the flow resistance of the synthetic resin material of the mold 12, greatly influence the flow resistance of the cross section formed by the protrusions 12a. In particular, the protrusions 12a of the mold 12 have a large surface area, which increases the flow resistance of the soft synthetic resin material 2. As the cooling progresses, the mold 11 forming the designed surface and the mold 1
Protrusion 1 that increases the flow resistance of the synthetic resin material of 2
The flow resistance of the cross section formed by 2a has a high flow resistance value.
したがつて、金型１１及び金型１２、金型１３
で形成される型空間は、意匠面を形成 する金型
１１と金型１２の合成樹脂材料の流動抵抗を増加
させた突部１２ａによつて、後に射出した硬質合
成樹脂材料１の流動抵抗が高くなり、後に射出し
た硬質合成樹脂材料１の移動を制限することがで
きる。故に、意匠面を形成する金型１１と金型１
２の合成樹脂材料の流動抵抗を増加させた突部１
２ａを介して流動される成形品下部ｅを成形する
空間方向への硬質合成樹脂材料１の移動は、金型
１２の突部１２ａによつて規制され、成形品下部
ｅを成形する空間方向を軟質合成樹脂材料２のみ
で形成することができる。 Therefore, the mold 11, the mold 12, and the mold 13
The mold space formed by the projecting portions 12a, which increase the flow resistance of the synthetic resin material of the mold 11 and the mold 12 forming the design surface, reduces the flow resistance of the hard synthetic resin material 1 that is subsequently injected. This makes it possible to restrict the movement of the hard synthetic resin material 1 that is later injected. Therefore, the mold 11 and the mold 1 forming the design surface
Protrusion 1 that increases the flow resistance of the synthetic resin material of 2
The movement of the hard synthetic resin material 1 in the direction of the space in which the lower part e of the molded product is molded is regulated by the protrusion 12a of the mold 12, and the movement of the hard synthetic resin material 1 is regulated by the protrusion 12a of the mold 12. It can be formed only from the soft synthetic resin material 2.
上記実施例の合成樹脂の成形方法では、所定の
軟質合成樹脂材料２を型に射出した後、他の硬質
合成樹脂材料１を、再度、型に射出して、後に射
出した硬質合成樹脂材料１を先に射出した軟質合
成樹脂材料２で包囲する合成樹脂の成形方法にお
いて、意匠面の反対側の面を形成する金型１２側
に、流動抵抗を増加する突部１２ａからなる高流
動抵抗箇所を設け、後に射出した硬質合成樹脂材
料１の移動を制限して射出すること金型１２に射
出した硬質合成樹脂材料１の流動抵抗を増加する
箇所を設け、後に射出した硬質合成樹脂材料１の
移動を制限するものである。 In the synthetic resin molding method of the above embodiment, after a predetermined soft synthetic resin material 2 is injected into a mold, another hard synthetic resin material 1 is again injected into the mold, and the subsequently injected hard synthetic resin material 1 is injected into the mold again. In the synthetic resin molding method, a high flow resistance point consisting of a protrusion 12a that increases flow resistance is formed on the side of the mold 12 forming the surface opposite to the designed surface. To restrict the movement of the hard synthetic resin material 1 that was later injected, by providing a part that increases the flow resistance of the hard synthetic resin material 1 that was injected later into the mold 12. It restricts movement.
したがつて、所定の成形品を直接成形が可能と
なり、作業能率を上げることができる。また、成
形品の意匠面に成形時のラインが現れず、その見
栄えを良くすることができる。 Therefore, it is possible to directly mold a predetermined molded product, and work efficiency can be improved. In addition, lines during molding do not appear on the design surface of the molded product, making it possible to improve its appearance.
［発明の効果］
以上のように、本発明の合成樹脂の成形方法で
は、所定の軟質合成樹脂材料を金型に射出した
後、他の硬質合成樹脂材料を、再度、金型に射出
して、後に射出した硬質合成樹脂材料を先に射出
した軟質合成樹脂材料で包囲するとき、意匠面の
反対側の面を形成する金型側のみに、流動抵抗を
増加する突部からなる高流動抵抗箇所を設け、後
に射出した硬質合成樹脂材料の移動のみを制限し
て射出するものである。[Effects of the Invention] As described above, in the synthetic resin molding method of the present invention, after a predetermined soft synthetic resin material is injected into a mold, another hard synthetic resin material is injected into the mold again. , when the hard synthetic resin material injected later is surrounded by the soft synthetic resin material injected first, high flow resistance consisting of protrusions that increase flow resistance is created only on the mold side that forms the surface opposite to the design surface. A location is provided to restrict only the movement of the hard synthetic resin material that is subsequently injected.
したがつて、先に射出された軟質合成樹脂材料
中に、後から他の硬質合成樹脂材料を射出する場
合に、後から射出した硬質合成樹脂材料の移動を
任意の箇所で停止できる。故に、硬度、材料を異
にする２種以上の合成樹脂材料からなる、所謂、
サンドイツチ成形箇所と特定の合成樹脂材料のみ
の箇所が混在する所定の成形品の直接成形が可能
となり、作業能率を上げることができる。また、
成形品の意匠面に成形時のラインが現れず、ま
た、意匠面を形成する金型に格別な形状を要求す
るものでないから、その見栄えを良くすることが
できる。 Therefore, when another hard synthetic resin material is later injected into the previously injected soft synthetic resin material, the movement of the later injected hard synthetic resin material can be stopped at any location. Therefore, so-called plastics made of two or more types of synthetic resin materials with different hardness and materials.
It is now possible to directly mold a predetermined molded product that includes a mixture of sand german molded parts and parts made only of a specific synthetic resin material, increasing work efficiency. Also,
Since no molding lines appear on the designed surface of the molded product, and the mold that forms the designed surface does not require a special shape, the appearance of the molded product can be improved.
第１図は本発明の一実施例の合成樹脂の成形方
法による略Ｙ字状の成形品の断面図、第２図は従
来の合成樹脂の成形方法による略Ｙ字状の成形品
の断面図、第３図は従来の他の合成樹脂の成形方
法による略Ｙ字状の成形品の断面図である。
図において、１……硬質合成樹脂材料、２……
軟質合成樹脂材料、１１，１２，１３，……金
型、１２ａ……突部である。なお、図中、同一符
号及び同一記号は、同一または相当部分を示す。
Fig. 1 is a sectional view of a substantially Y-shaped molded product obtained by a synthetic resin molding method according to an embodiment of the present invention, and Fig. 2 is a sectional view of a substantially Y-shaped molded product obtained by a conventional synthetic resin molding method. , FIG. 3 is a sectional view of a substantially Y-shaped molded product produced by another conventional synthetic resin molding method. In the figure, 1... hard synthetic resin material, 2...
Soft synthetic resin material, 11, 12, 13,...Mold, 12a...Protrusion. In addition, in the figures, the same reference numerals and symbols indicate the same or equivalent parts.
Claims (1)
後、他の硬質合成樹脂材料を、再度、金型に射出
して、後に射出した硬質合成樹脂材料を先に射出
した軟質合成樹脂材料で包囲する合成樹脂の成形
方法において、 意匠面の反対側の面を形成する金型側のみに、
流動抵抗を増加する突部からなる高流動抵抗箇所
を設け、後に射出した硬質合成樹脂材料の移動の
みを制限して射出することを特徴とする合成樹脂
の成形方法。[Claims] 1. After injecting a predetermined soft synthetic resin material into a mold, another hard synthetic resin material is again injected into the mold, and the hard synthetic resin material injected later is injected first. In a synthetic resin molding method that surrounds the material with a soft synthetic resin material, only the mold side that forms the surface opposite to the design surface,
A synthetic resin molding method characterized by providing a high flow resistance point consisting of a protrusion that increases flow resistance, and injecting a hard synthetic resin material while restricting only the movement of the subsequently injected hard synthetic resin material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63264973A JPH02111531A (en) | 1988-10-20 | 1988-10-20 | Molding method of synthetic resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63264973A JPH02111531A (en) | 1988-10-20 | 1988-10-20 | Molding method of synthetic resin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02111531A JPH02111531A (en) | 1990-04-24 |
| JPH0581419B2 true JPH0581419B2 (en) | 1993-11-12 |
Family
ID=17410784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63264973A Granted JPH02111531A (en) | 1988-10-20 | 1988-10-20 | Molding method of synthetic resin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02111531A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2478732B (en) | 2010-03-15 | 2014-08-20 | Kraft Foods R & D Inc | Improvements in injection moulding |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56106840A (en) * | 1980-01-25 | 1981-08-25 | Toppan Printing Co Ltd | Manufacture of multilayer vessel and metal mold therefor |
| JPH01163113A (en) * | 1987-12-21 | 1989-06-27 | Shiseido Co Ltd | Hair cosmetic |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6465363A (en) * | 1987-08-31 | 1989-03-10 | Aisin Chem | Stator wheel made of resin and manufacture thereof |
-
1988
- 1988-10-20 JP JP63264973A patent/JPH02111531A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56106840A (en) * | 1980-01-25 | 1981-08-25 | Toppan Printing Co Ltd | Manufacture of multilayer vessel and metal mold therefor |
| JPH01163113A (en) * | 1987-12-21 | 1989-06-27 | Shiseido Co Ltd | Hair cosmetic |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02111531A (en) | 1990-04-24 |
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