JPH0112649B2 - - Google Patents
Info
- Publication number
- JPH0112649B2 JPH0112649B2 JP59134649A JP13464984A JPH0112649B2 JP H0112649 B2 JPH0112649 B2 JP H0112649B2 JP 59134649 A JP59134649 A JP 59134649A JP 13464984 A JP13464984 A JP 13464984A JP H0112649 B2 JPH0112649 B2 JP H0112649B2
- Authority
- JP
- Japan
- Prior art keywords
- cavity
- container
- mold
- sliding
- synthetic resin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 229920003002 synthetic resin Polymers 0.000 claims description 40
- 239000000057 synthetic resin Substances 0.000 claims description 40
- 238000000465 moulding Methods 0.000 claims description 35
- 238000000034 method Methods 0.000 claims description 15
- 239000003086 colorant Substances 0.000 claims description 13
- 229920005989 resin Polymers 0.000 claims description 11
- 239000011347 resin Substances 0.000 claims description 11
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 229920005749 polyurethane resin Polymers 0.000 claims 1
- 208000015943 Coeliac disease Diseases 0.000 description 14
- 230000000694 effects Effects 0.000 description 2
- 241000218657 Picea Species 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/16—Making multilayered or multicoloured articles
- B29C45/1635—Making multilayered or multicoloured articles using displaceable mould parts, e.g. retractable partition between adjacent mould cavities
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0081—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor of objects with parts connected by a thin section, e.g. hinge, tear line
Description
【発明の詳細な説明】
「産業上の利用分野」
本発明は、容器本体と蓋体とこれらを一体的に
連結する薄肉ヒンジとを有する合成樹脂製容器の
各部の色彩を異色樹脂によつて異ならせるように
する、多色樹脂容器の成形方法に関する。Detailed Description of the Invention "Field of Industrial Application" The present invention is directed to a synthetic resin container having a container body, a lid, and a thin hinge that integrally connects them. This invention relates to a method for molding multicolored resin containers in different colors.
「従来技術」
例えば、化粧料などを入れておく合成樹脂製容
器として、第５図に示すように、容器本体１と蓋
体２とを薄肉ヒンジ３によつて一体的に連結した
構造のものが知られている。そしてこの種の容器
にあつては、これに高級感や色彩の変化等をもた
せるために、例えば容器本体１と蓋体２とを異な
る色の合成樹脂で成形することが実施されてい
る。``Prior Art'' For example, as shown in FIG. 5, a synthetic resin container for storing cosmetics, etc., has a structure in which a container body 1 and a lid 2 are integrally connected by a thin hinge 3. It has been known. In this type of container, in order to give it a luxurious feel and a change in color, for example, the container body 1 and the lid 2 are molded from synthetic resins of different colors.
第６図ないし第７図は、その成形方法の従来例
を示すもので、これは、キヤビテイ型４およびコ
ア型５間に容器キヤビテイ６、蓋体キヤビテイ７
およびヒンジキヤビテイ８を形成し、さらに第７
図に示すように、摺動ピン９によつて容器キヤビ
テイ６と蓋体キヤビテイ７とを分離した状態で、
第１湯口１０から第１の合成樹脂P1を射出し、
次いで第７図に示すように、摺動ピン９を後退さ
せた位置において、第２湯口１１から第１の合成
樹脂とは異なる色の第２の合成樹脂P2を射出し、
これによつて第５図に示した構造の２色の合成樹
脂容器を得る方法である。 6 and 7 show a conventional example of the molding method, in which a container cavity 6 and a lid cavity 7 are formed between a cavity mold 4 and a core mold 5.
and a hinge cavity 8, and a seventh
As shown in the figure, with the container cavity 6 and the lid cavity 7 separated by the sliding pin 9,
Injecting the first synthetic resin P 1 from the first sprue 10,
Next, as shown in FIG. 7, at the position where the sliding pin 9 is retracted, a second synthetic resin P 2 of a different color from the first synthetic resin is injected from the second sprue 11.
This is a method for obtaining a two-color synthetic resin container having the structure shown in FIG.
「発明が解決しようとする問題点」
しかしながら、このような従来の成形方法にあ
つては、これに使用する金型の構造上、基本的に
は２色の容器成形が限度であつて、それ以上の異
なる種類の色彩をもつ容器の一体成形は不可能で
あり、したがつて、意匠的にも重要視されるこの
種の容器を充分に満足させることができないとい
う問題があつた。また、この従来の金型では、容
器キヤビテイ６と蓋体キヤビテイ７とを分離する
手段として、その容器キヤビテイ６とヒンジキヤ
ビテイ８の境界部分（容器本体の周壁部に対応す
る部分）のキヤビテイ内へ摺動ピン９を進退させ
る構成を採用している関係上、成形すべき容器の
周壁部の肉厚や断面形状等によつてはこの摺動ピ
ン９を設けて進退させることができない場合があ
るという問題もあつた。"Problems to be Solved by the Invention" However, with such conventional molding methods, due to the structure of the mold used, there is basically a limit to molding two-color containers; It is impossible to integrally mold containers having the different colors as described above, and therefore, there is a problem in that it is not possible to fully satisfy this type of container, which is important from a design standpoint. In addition, in this conventional mold, as a means for separating the container cavity 6 and the lid cavity 7, a sliding member is inserted into the cavity at the boundary portion between the container cavity 6 and the hinge cavity 8 (the portion corresponding to the peripheral wall of the container body). Due to the structure in which the sliding pin 9 is moved back and forth, depending on the wall thickness and cross-sectional shape of the peripheral wall of the container to be molded, it may not be possible to move the container forward and backward using the sliding pin 9. There were also problems.
よつて、本発明は２色以上の異なる種類の色彩
をもつ容器を一体成形によつて容易に成形するこ
とができ、しかもこれを金型の構造上からもきわ
めて容易な手段によつて実現することが可能であ
り、さらに成形すべき容器の形状等に左右されな
い成形方法を提供しようとするものである。 Therefore, according to the present invention, containers having two or more different colors can be easily molded by integral molding, and this can be achieved by extremely easy means from the viewpoint of the structure of the mold. The object of the present invention is to provide a molding method that is not dependent on the shape of the container to be molded.
「問題を解決するための手段」
本発明では、金型を構成するキヤビテイ型およ
びコア型の少なくとも一方に、キヤビテイ内に進
退自在な摺動コアが設けられ、該摺動コアの前進
位置において、容器本体および蓋体の各々の周壁
部と、蓋体を容器本体に一体的にかつ開閉自在に
連結する薄肉ヒンジとを成形するための枠状キヤ
ビテイが形成され、後退位置において、容器本体
の底板部および蓋体の天板部を成形するための底
板キヤビテイおよび天板キヤビテイがそれぞれ形
成され、これら枠状キヤビテイ、底板キヤビテイ
および天板キヤビテイにはそれぞれについて湯口
が開口されている成形装置を用い、まず、前記摺
動コアの前進位置で枠状キヤビテイ内に第１の合
成樹脂を射出し、次いで摺動コアを後退させた位
置において、底板キヤビテイ内および天板キヤビ
テイ内の少なくとも一方に第２の合成樹脂を、他
方に第３の合成樹脂を射出して少なくとも２色の
合成樹脂容器を成形する方法とした。"Means for Solving the Problem" In the present invention, at least one of the cavity mold and the core mold constituting the mold is provided with a sliding core that can move forward and backward within the cavity, and in the forward position of the sliding core, A frame-shaped cavity is formed for forming peripheral walls of each of the container body and the lid, and a thin hinge that integrally connects the lid to the container body so as to be openable and closable, and in the retracted position, the bottom plate of the container body A bottom plate cavity and a top plate cavity are respectively formed for molding the top plate part of the part and the lid body, and a molding apparatus is used in which a sprue is opened in each of the frame-shaped cavity, the bottom plate cavity and the top plate cavity. First, the first synthetic resin is injected into the frame-shaped cavity at the forward position of the sliding core, and then, at the retracted position of the sliding core, a second synthetic resin is injected into at least one of the bottom plate cavity and the top plate cavity. A synthetic resin container of at least two colors was formed by injecting a third synthetic resin onto the other synthetic resin.
「実施例」
第３図は、本発明による成形方法によつて得ら
れた多色樹脂容器の構成を示すもので、この図示
例による容器も、基本的には容器本体１と蓋体２
とこれらを一体的に連結する薄内ヒンジ３とを有
する構成であるが、容器本体１の周壁部１ａ、蓋
体２の周壁部２ａおよび薄肉ヒンジ３の部分が第
１の合成樹脂P1によつて形成され、また容器本
体１の底板部１ｂ部分が第２の合成樹脂P2によ
つて形成され、さらに蓋体２の天板部２ｂ部分が
第３の合成樹脂P3によつて形成され、かつ、こ
れら第１、第２および第３の合成樹脂P1，P2お
よびP3は、何れも異なる色彩を有し、これによ
つて３色の樹脂容器が構成されている点において
従来例の容器と異なつている。"Example" FIG. 3 shows the structure of a multicolored resin container obtained by the molding method according to the present invention. The container according to this illustrated example also basically consists of a container body 1 and a lid 2.
and a thin inner hinge 3 that integrally connects these, but the peripheral wall 1a of the container body 1, the peripheral wall 2a of the lid 2, and the thin hinge 3 are made of the first synthetic resin P1 . The bottom plate 1b of the container body 1 is made of the second synthetic resin P2, and the top plate 2b of the lid 2 is made of the third synthetic resin P3 . and the first, second, and third synthetic resins P 1 , P 2 , and P 3 all have different colors, and a three-color resin container is constructed thereby. This is different from conventional containers.
次に、この３色樹脂容器の成形方法を実施する
際に用いて好適な成形装置（金型）の一例を第１
図およびを参照して説明する。この第１図
およびにおいて、符号２０はキヤビテイ型であ
り、３０はコア型である。コア型３０は、キヤビ
テイ型２０と型合わせされるベースコア３１と、
該ベースコア３１に設けられてそれぞれがキヤビ
テイ内に進退自在な第１摺動コア３２および第２
摺動コア３３とから構成されている。そして、こ
の両摺動コア３２，３３が第１図に示すような
前進位置にあるとき、この金型内には、前記した
容器本体１および蓋体２の各々の周壁部１ａ，２
ａと前記薄肉ヒンジ３とを成形するための枠状キ
ヤビテイC1が形成され、一方、両摺動コア３２，
３３が第１図に示すような後退位置にあると
き、この金型内には、枠状キヤビテイC1の他に
さらに、前記した底板部１ｂを成形するための底
板キヤビテイC2、および天板部２ｂを成形する
ための天板キヤビテイC3がそれぞれ形成される
ように構成されている。また、キヤビテイ型２０
には、前記枠状キヤビテイC1内に開口する第１
湯口G1と、底板キヤビテイC2内に開口する第２
湯口G2と、天板キヤビテイC3内に開口する第３
湯口G3とが設けられ、これら各湯口G1，G2，G3
はそれぞれ自身の湯道を介して各々の射出機（図
示せず）に連絡されている。 Next, an example of a molding device (mold) suitable for carrying out the method for molding this three-color resin container is shown in the first example.
This will be explained with reference to the figures and. 1 and 2, reference numeral 20 is a cavity type, and 30 is a core type. The core mold 30 includes a base core 31 that is matched with the cavity mold 20;
A first sliding core 32 and a second sliding core 32 are provided on the base core 31 and can move forward and backward into the cavity.
It is composed of a sliding core 33. When both the sliding cores 32 and 33 are in the forward position as shown in FIG.
A frame-shaped cavity C1 is formed for molding the thin-walled hinge 3 and the sliding core 32,
33 is in the retracted position as shown in FIG. 1, in addition to the frame-shaped cavity C 1 , there is also a bottom plate cavity C 2 for molding the bottom plate portion 1b described above, and a top plate. A top plate cavity C3 for molding the portion 2b is formed respectively. In addition, cavity type 20
includes a first opening in the frame-shaped cavity C1 .
A sprue G 1 and a second opening in the bottom plate cavity C 2
Sprue G 2 and the third opening in top plate cavity C 3
A sprue G 3 is provided, and each of these sprues G 1 , G 2 , G 3
are each connected via its own runner to each injection machine (not shown).
このように構成された成形装置を用いて第３図
に示す容器を成形するには、まず、第１、第２摺
動コア３２，３３を第２図に示す前進位置に位
置させたうえで、第１湯口G1から枠状キヤビテ
イC1内に例えばポリプロピレン樹脂等を所望の
色彩に着色してなる第１の合成樹脂P1を射出し、
次いで、摺動コア３２，３３を第２図に示す後
退位置に位置させたうえで、第２湯口G2から、
第１の合成樹脂P1と相溶性のある同種または異
種の樹脂を他の色彩に着色してなる第２の合成樹
脂P2を底板キヤビテイC2内に射出し、さらにこ
れと平行して、第３湯口G3から、第１および第
２の合成樹脂の何れとも色彩の異なる第３の合成
樹脂P3を天板キヤビテイC3内に射出し、これを
必要な時間冷却した後、キヤビテイ型を開き、次
いで摺動コアを前進させて脱型すれば、第３図に
示す３色の合成樹脂製容器が成形される。 In order to mold the container shown in FIG. 3 using the molding apparatus configured as described above, first, the first and second sliding cores 32 and 33 are positioned in the forward position shown in FIG. , inject a first synthetic resin P 1 made of polypropylene resin or the like in a desired color from a first sprue G 1 into a frame-shaped cavity C 1 ,
Next, after placing the sliding cores 32 and 33 in the retracted position shown in FIG. 2, from the second sprue G2 ,
A second synthetic resin P 2 made of the same or different resin that is compatible with the first synthetic resin P 1 and colored in another color is injected into the bottom plate cavity C 2 , and further parallel to this, A third synthetic resin P 3 having a different color from both the first and second synthetic resins is injected from the third sprue G 3 into the top cavity C 3 , and after cooling it for a required period of time, the cavity mold is opened, and then the sliding core is moved forward and removed from the mold, thereby molding the three-colored synthetic resin containers shown in FIG.
ここで、第２および第３の合成樹脂P2，P3に
同色の合成樹脂を使用すれば、底板部１ｂと天板
部２ｂが同一色でかつそれ以外の部分の色彩と異
なつた２色の容器が成形される。 Here, if synthetic resins of the same color are used for the second and third synthetic resins P 2 and P 3 , the bottom plate part 1b and the top plate part 2b can have two colors that are the same color and different from the color of the other parts. containers are formed.
この実施例によれば、摺動コア３２，３３を共
にその前進位置および後退位置に摺動させるだけ
で、３色の容器を得るに必要な３つのキヤビテイ
を形成することができるその構成および作動にも
無理がなく、したがつて、成形すべき容器の周壁
部の肉厚や断面形状等が多様に変化している容器
等を成形する場合にもこれに充分に対応するキヤ
ビテイの形成を無理なく実現できる。さらに、実
施例のように、第１摺動コア３２および第２摺動
コア３３を別体に構成した場合、それら両摺動コ
アのそれぞれの後退位置を調節することによつ
て、底板部１ｂや天板部２ｂの肉厚を必要に応じ
て自由に加減できる利点があり、また、摺動コア
３２，３３を成形品の突き出し用としても利用で
きる利点もある。 According to this embodiment, the three cavities necessary to obtain containers of three colors can be formed by simply sliding the sliding cores 32 and 33 together into their forward and backward positions. Therefore, even when molding a container, etc., in which the wall thickness and cross-sectional shape of the peripheral wall of the container to be molded vary widely, it is impossible to form a cavity that fully accommodates these changes. It can be achieved without any problem. Furthermore, when the first sliding core 32 and the second sliding core 33 are configured separately as in the embodiment, by adjusting the retracted positions of the two sliding cores, the bottom plate portion 1b There is an advantage that the thickness of the top plate portion 2b can be adjusted freely as required, and the sliding cores 32 and 33 can also be used for ejecting molded products.
第４図，は、本発明の成形方法を実施する
のに使用される成形装置（金型）の他の実施例を
示すもので、この実施例では、キヤビテイ型２０
にも、コア型３０の第１および第２摺動コア３
２，３３とそれぞれ対向する位置に第３および第
４摺動コア２２，２３をそれぞれ設け、かつ、該
第３、第４摺動コア２２，２３の各々の外径を図
示の如く第１、第２摺動コア３２，３３の各々の
外径よりもわずかに小径に構成した点において先
の第１図および第２図に示した実施例の成形装置
と異なつている。 FIG. 4 shows another embodiment of the molding apparatus (mold) used to carry out the molding method of the present invention. In this embodiment, a cavity mold 20 is used.
Also, the first and second sliding cores 3 of the core mold 30
Third and fourth sliding cores 22 and 23 are provided at positions facing the first and second sliding cores 2 and 33, respectively, and the outer diameters of the third and fourth sliding cores 22 and 23 are set as shown in the figure. This molding apparatus differs from the molding apparatus of the embodiment shown in FIGS. 1 and 2 in that the diameter is slightly smaller than the outer diameter of each of the second sliding cores 32 and 33.
このような構成の成形装置を使用すれば、底板
キヤビテイC2および天板キヤビテイC3を形成す
る際に、第１、第２摺動コア３２，３３および第
３、第４摺動コア２２，２３のそれぞれをその対
応する容器の底板部１ｂおよび天板部２ｂの肉厚
の半分ずつ互いに離間する方向へ摺動させておく
ことによつて、射出された第１の合成樹脂P1に
対する第２および第３の合成樹脂P2，P3の各々
の融着部の断面形状を第４図に示す如く互いの
凹凸どうしで係合させる形態とすることができ、
これによつてその融着部の強度向上を図ることが
できる利点がある。 If a molding apparatus having such a configuration is used, when forming the bottom plate cavity C 2 and the top plate cavity C 3 , the first and second sliding cores 32, 33 and the third and fourth sliding cores 22, 23 in a direction that separates them from each other by half the wall thickness of the bottom plate part 1b and top plate part 2b of the corresponding container. The cross-sectional shapes of the fused portions of the second and third synthetic resins P 2 and P 3 can be configured to engage with each other through their unevenness, as shown in FIG.
This has the advantage that the strength of the fused portion can be improved.
なお、実施例においては、第１および第２摺動
コアを別体に構成し、さらに第３、第４摺動コア
も別体に構成したが、これらはそれぞれ一体に構
成しても良いことはもちろんである。 In addition, in the embodiment, the first and second sliding cores are configured separately, and the third and fourth sliding cores are also configured separately, but these may be configured as one body. Of course.
「発明の効果」
本発明にあつては、金型を構成するキヤビテイ
型およびコア型の少なくとも一方にキヤビテイ内
に進退自在な摺動コアを設け、該摺動コアの前進
位置において、容器本体および蓋体の各々の周壁
部と、蓋体を容器本体に一体的にかつ開閉自在に
連結する薄肉ヒンジとを成形するための枠状キヤ
ビテイを形成し、後退位置において、容器本体の
底板部および蓋体の天板部を成形するための底板
キヤビテイおよび天板キヤビテイをそれぞれ形成
し、これら各キヤビテイにはそれぞれについて湯
口を開口させて成る成形装置を用い、まず、前記
摺動コアの前進位置で枠状キヤビテイ内に第１の
合成樹脂を射出し、次いで摺動コアを後退させた
位置において、底板キヤビテイ内および天板キヤ
ビテイ内の少なくとも一方に第２の合成樹脂を、
他方に第３の合成樹脂を射出して少なくとも２色
の合成樹脂容器を成形する方法としたから、２色
以上の異なる色彩をもつ容器を一体成形によつて
容易に成形することができ、しかもこれを金型の
構造上や成形性等からもきわめて容易な手段によ
つて実現することができ、さらに成形すべき容器
の形状等に左右されることのない良好な多色樹脂
容器の成形方法を得ることができるという優れた
効果を奏する。"Effects of the Invention" In the present invention, at least one of the cavity mold and the core mold constituting the mold is provided with a sliding core that can move forward and backward in the cavity, and in the forward position of the sliding core, the container body and A frame-shaped cavity is formed for forming each circumferential wall of the lid and a thin hinge that integrally connects the lid to the container body so as to be openable and closable, and in the retracted position, the bottom plate of the container body and the lid A bottom plate cavity and a top plate cavity for molding the top plate part of the body are formed respectively, and a molding device is used in which a sprue is opened in each of these cavities. A first synthetic resin is injected into the shaped cavity, and then, at a position where the sliding core is retracted, a second synthetic resin is injected into at least one of the bottom plate cavity and the top plate cavity,
Since the method of molding synthetic resin containers of at least two colors by injecting a third synthetic resin onto the other side, containers with two or more different colors can be easily molded by integral molding. This can be achieved by extremely easy means in terms of mold structure and moldability, and furthermore, it is a good method for molding multicolored resin containers that is not affected by the shape of the container to be molded. It has the excellent effect of being able to obtain the following.
第１図〜第４図は本発明の実施例を示すもの
で、第１図，はそれぞれ成形装置の断面図、
第２図，はそれぞれ成形方法を説明するため
に示した断面図、第３図は成形された容器の断面
図、第４図，は成形装置の他の実施例を示し
た断面図、第５図〜第７図は従来の成形方法を示
す図で、第５図は容器の断面図、第６図および第
７図はそれぞれ断面図である。
１……容器本体、１ａ……周壁部、１ｂ……底
板部、２……蓋体、２ａ……周壁部、２ｂ……天
板部、３……薄肉ヒンジ、P1……第１の合成樹
脂、P2……第２の合成樹脂、P3……第３の合成
樹脂、２０……キヤビテイ型、２２……第３摺動
コア、２３……第４摺動コア、３０……コア型、
３１……ベースコア、３２……第１摺動コア、３
３……第２摺動コア、C1……枠状キヤビテイ、
C2……底板キヤビテイ、C3……天板キヤビテイ、
G1……第１湯口、G2……第２湯口、G3……第３
湯口。
1 to 4 show embodiments of the present invention, and FIG. 1 is a cross-sectional view of a molding device, and FIG.
2 and 3 are cross-sectional views shown to explain the molding method, respectively. FIG. 3 is a cross-sectional view of a molded container, and FIG. 7 to 7 are diagrams showing a conventional molding method, FIG. 5 is a sectional view of the container, and FIGS. 6 and 7 are sectional views, respectively. DESCRIPTION OF SYMBOLS 1...Container body, 1a...Peripheral wall part, 1b...Bottom plate part, 2...Lid body, 2a...Peripheral wall part, 2b...Top plate part, 3...Thin hinge, P1 ...First plate part Synthetic resin, P 2 ... Second synthetic resin, P 3 ... Third synthetic resin, 20 ... Cavity type, 22 ... Third sliding core, 23 ... Fourth sliding core, 30 ... core type,
31... Base core, 32... First sliding core, 3
3...Second sliding core, C1 ...Frame cavity,
C 2 ... bottom plate cavity, C 3 ... top plate cavity,
G1 ...First sprue, G2 ...Second sprue, G3 ...Third sprue
Spruce.
Claims (1)
薄肉ヒンジとを成形するためのキヤビテイが金型
内に形成され、該金型を構成するキヤビテイ型お
よびコア型の少なくとも一方には前記キヤビテイ
内に進退自在な摺動コアが設けられ、該摺動コア
の前進位置で、容器本体および蓋体の各々の周壁
部と前記薄肉ヒンジとを成形するための枠状キヤ
ビテイが形成され、後退位置で、容器本体の底板
部および蓋体の天板部を成形するための底板キヤ
ビテイおよび天板キヤビテイがそれぞれ形成さ
れ、これら枠状キヤビテイ、底板キヤビテイおよ
び天板キヤビテイにはそれぞれについて湯口が開
口されている成形装置を用い、前記摺動コアの前
進位置で枠状キヤビテイ内に第１の合成樹脂を射
出し、次いで、摺動コアを後退させた位置におい
て、底板キヤビテイ内および天板キヤビテイ内の
少なくとも一方に第２の合成樹脂を、他方に第３
の合成樹脂を射出して少なくとも２色の合成樹脂
容器を成形することを特徴とする、多色樹脂容器
の成形方法。 ２ 前記第１、第２および第３の合成樹脂は、そ
れぞれが異なる色彩であつてかつ相溶性もしくは
融着性のある合成樹脂であることを特徴とする特
許請求の範囲第１項記載の多色樹脂容器の成形方
法。 ３ 前記摺動コアは、容器キヤビテイ内に進退自
在な第１摺動コアと、蓋体キヤビテイ内に摺動自
在な第２摺動コアとから成り、これら両摺動コア
は互いに一体にもしくは別々に摺動自在であるこ
とを特徴とする特許請求の範囲第１項記載の多色
樹脂容器の成形方法。 ４ 前記キヤビテイ型は、前記第１および第２摺
動コアとそれぞれ対向する位置に第３および第４
摺動コアを備えていることを特徴とする特許請求
の範囲第１項または第３項記載の多色樹脂容器の
成形方法。[Scope of Claims] 1. A cavity for molding a container body, a lid body, and a thin-walled hinge that integrally connects them is formed in a mold, and at least a cavity mold and a core mold constituting the mold are formed. One side is provided with a sliding core that can move forward and backward within the cavity, and in the advanced position of the sliding core, a frame-shaped cavity is formed for forming the peripheral wall portions of the container body and the lid, and the thin hinge. In the retracted position, a bottom plate cavity and a top plate cavity for forming the bottom plate part of the container body and the top plate part of the lid body are formed, respectively. Using a molding device with an open sprue, the first synthetic resin is injected into the frame-shaped cavity at the forward position of the sliding core, and then, at the retracted position of the sliding core, the first synthetic resin is injected into the bottom plate cavity and the ceiling. A second synthetic resin is applied to at least one side of the plate cavity, and a third synthetic resin is applied to the other side of the plate cavity.
1. A method for molding a multicolored resin container, comprising injecting a synthetic resin of at least two colors to mold a synthetic resin container of at least two colors. 2. The polyurethane resin according to claim 1, wherein the first, second, and third synthetic resins have different colors and are compatible or fusible synthetic resins. How to mold colored resin containers. 3. The sliding core consists of a first sliding core that can move forward and backward into the container cavity, and a second sliding core that can slide inside the lid cavity, and these sliding cores can be moved together or separately. A method for molding a multicolored resin container according to claim 1, wherein the container is slidable. 4 The cavity mold has third and fourth sliding cores at positions facing the first and second sliding cores, respectively.
4. A method for molding a multicolored resin container according to claim 1 or 3, further comprising a sliding core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13464984A JPS6112311A (en) | 1984-06-29 | 1984-06-29 | Method for molding multicolor resin container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13464984A JPS6112311A (en) | 1984-06-29 | 1984-06-29 | Method for molding multicolor resin container |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6112311A JPS6112311A (en) | 1986-01-20 |
| JPH0112649B2 true JPH0112649B2 (en) | 1989-03-01 |
Family
ID=15133305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13464984A Granted JPS6112311A (en) | 1984-06-29 | 1984-06-29 | Method for molding multicolor resin container |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6112311A (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0293247U (en) * | 1988-12-31 | 1990-07-24 | ||
| JPH0618747B2 (en) * | 1989-04-14 | 1994-03-16 | 大協株式会社 | Double molding method and mold structure |
| JPH0478513A (en) * | 1990-07-23 | 1992-03-12 | Chiyoda Sangyo Kk | Method and device for molding heterochromatic molded form |
| FR2691096A1 (en) * | 1992-05-13 | 1993-11-19 | Cristour Sa | Method of injection molding of several different plastic materials from a decorative cord capsule and capsule obtained by this method. |
| DE10250765B4 (en) * | 2002-10-30 | 2005-06-30 | Wfs Werkzeug- Und Formenbau Schmidt Gmbh & Co.Kg | Method for molding a molded part with flap and molded part with flap |
| KR100493790B1 (en) * | 2002-11-18 | 2005-06-08 | 정문기 | molding apparatus and molding method using the same |
| JP4538255B2 (en) * | 2004-03-26 | 2010-09-08 | 中山工業株式会社 | Wet sheet container and injection mold for said container |
| JP5707060B2 (en) | 2010-06-02 | 2015-04-22 | 矢崎総業株式会社 | Plastic molded product |
| JP6226237B2 (en) * | 2014-03-31 | 2017-11-08 | 株式会社吉野工業所 | Synthetic resin molded product and molding method thereof |
| CN106671358A (en) * | 2017-01-13 | 2017-05-17 | 精英模具(上海)有限公司 | Method and mould for three-color injection molding |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57203531A (en) * | 1981-06-09 | 1982-12-13 | Toshiba Mach Co Ltd | Mold for multi-colored molding |
-
1984
- 1984-06-29 JP JP13464984A patent/JPS6112311A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57203531A (en) * | 1981-06-09 | 1982-12-13 | Toshiba Mach Co Ltd | Mold for multi-colored molding |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6112311A (en) | 1986-01-20 |
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