JPH06102463B2 - Preform mouth structure - Google Patents
Preform mouth structureInfo
- Publication number
- JPH06102463B2 JPH06102463B2 JP27701687A JP27701687A JPH06102463B2 JP H06102463 B2 JPH06102463 B2 JP H06102463B2 JP 27701687 A JP27701687 A JP 27701687A JP 27701687 A JP27701687 A JP 27701687A JP H06102463 B2 JPH06102463 B2 JP H06102463B2
- Authority
- JP
- Japan
- Prior art keywords
- preform
- mouth
- piece
- support ring
- flange
- 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
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
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D1/00—Rigid or semi-rigid containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material or by deep-drawing operations performed on sheet material
- B65D1/02—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents
- B65D1/0223—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by shape
- B65D1/023—Neck construction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/25—Solid
- B29K2105/253—Preform
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） この発明は合成樹脂たとえばポリエチレンテレフタレー
トをもつて成形された容器の口部内に耐熱性、耐薬品
性、強度等の向上を目的とする中間層を内設したプリフ
オームの口部構造に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an intermediate layer for improving heat resistance, chemical resistance, strength, etc. in the mouth of a container molded with a synthetic resin such as polyethylene terephthalate. The present invention relates to the structure of the mouth of the preform having the internal structure.
（従来の技術） ポリエチレンテレフタレートを主体とする容器の口部
に、中間層として耐熱性樹脂層を内設したものは特開昭
61−259946号公報により公知となつている。(Prior Art) Japanese Patent Application Laid-Open No. Sho-A-KOKAI has a heat-resistant resin layer as an intermediate layer at the mouth of a container mainly made of polyethylene terephthalate.
It is known from the publication of 61-259946.
（発明が解決しようとする問題点） この口部内に中間層を有する容器では、口部内の中間層
が容器主体を形成する樹脂によつて覆われていることか
ら、口部外側または内側にピースをインサートして耐熱
性等の向上を図つた場合のような問題点、例えば容器主
体とピースとの接着性が悪く、外力により接合面が剥離
したり、クラックが生じ易いので、トルクなどの高負荷
が加わるびんの口部には採用し難いことなどはないが、
サポートリングの内部まで中間層を設けることは不可能
とされていた。(Problems to be solved by the invention) In the container having the intermediate layer in the mouth portion, since the intermediate layer in the mouth portion is covered with the resin forming the container main body, the piece outside or inside the mouth portion is covered. Problems such as when heat resistance is improved by inserting, for example, the adhesiveness between the main body of the container and the piece is poor, and the joint surface is likely to peel off or crack due to external force, so high torque Although it is not difficult to use for the mouth of a bottle that receives a load,
It was impossible to provide an intermediate layer inside the support ring.
この発明は上記事情に鑑みてなされたものであつて、そ
の目的は中間層をピースをもつて形成し、そのピースの
一部によりサポートリング内にも中間層を設けてなる新
たなサポートリングの口部構造を提供することにある。The present invention has been made in view of the above circumstances, and an object of the invention is to provide a new support ring in which an intermediate layer is formed with a piece, and a part of the piece also provides the intermediate layer in the support ring. To provide a mouth structure.
（題点を解決するための手段） 上記目的によるこの発明は、合成樹脂容器のプリフオー
ムの口部内に中間層として収まり、かつ本体下側部にフ
ランジを有する短筒状のピースを射出成形し、外側面に
サポートリングを一体成形したプリフオームの口部
に、、上記ピースをプリフオーム成形時にサポートリン
グ内にフランジを位置させて内設することによつて、上
記問題点を解決してなる。(Means for Solving the Problems) The present invention according to the above object is to perform injection molding of a short tubular piece that fits in the mouth of the preform of the synthetic resin container as an intermediate layer and has a flange on the lower side of the main body. The above-mentioned problems are solved by locating the above-mentioned piece inside the support ring at the mouth portion of the preform integrally formed with the support ring on the outer side surface while the flange is positioned inside the support ring during the preform molding.
（実施例） 図中１はプリフオームの口部内に中間層としてインサー
トされる短筒状のピースで、ポリカーボネート、ポリア
ミドなどの耐熱性に優れた合成樹脂の射出成形体からな
り、本体の下部外側にフランジ２が一体形成してある。
また本体側部とフランジの接続部分には多数の流通孔３
が穿設してある。(Example) In the figure, 1 is a short cylindrical piece that is inserted as an intermediate layer in the mouth of the preform, and is made of a synthetic resin injection-molded body having excellent heat resistance such as polycarbonate and polyamide. The flange 2 is integrally formed.
In addition, a large number of through holes 3 are provided in the connecting portion between the body side part and the flange.
Has been drilled.
上記ピース１は第２図に示すように、一対の割型11,11
からなるプリフオームの口部成形型10が型開きされてい
るときに、成形型の下側から部材12に載置して割型11,1
1の中央にインサートされる。As shown in FIG. 2, the piece 1 has a pair of split molds 11,11.
When the mouth part forming die 10 of the preform consisting of is opened, the split die 11,1 is placed on the member 12 from the lower side of the forming die.
Inserted in the center of 1.
上記割型11,11の型面は、ねじ成形型面13とその下側の
サポートリング成形凹所14とからなり、そのサポートリ
ング成形凹所14にフランジ２が位置したところでインサ
ートを止め、部材12を停止してその状態にピース１を保
つ。The mold surfaces of the split molds 11 and 11 are composed of a screw molding mold surface 13 and a support ring molding recess 14 on the lower side thereof. When the flange 2 is located in the support ring molding recess 14, the insert is stopped, Stop 12 and keep piece 1 in that position.
上記のようにピースのインサートが完了したならば、割
型11,11の型閉じを行なう。そして次に割型内に対設し
た一対の挾持用のピン15,15を、油圧またはエアーシリ
ンダ16,16もつて型面から突出し、ピース１を両側から
支持する。このようにしてピース１を挾持したら、上記
部材12を下方へ戻してピース１から抜き出す。この型閉
じによりピース１は第４図に示すように、口部成形型10
の内部に収まるとともに、フランジ２がサポートリング
成形凹所14に入り込む。When the pieces have been inserted as described above, the split molds 11 and 11 are closed. Then, a pair of holding pins 15 and 15 oppositely arranged in the split mold are projected from the mold surface with hydraulic or air cylinders 16 and 16 to support the piece 1 from both sides. After holding the piece 1 in this manner, the member 12 is returned downward and pulled out from the piece 1. As a result of this mold closing, the piece 1 is closed as shown in FIG.
And the flange 2 fits into the support ring molding recess 14.
このようにピース１を内包した口部成形型10は、第５図
に示すように、プリフオーム成形金型17の上に移動さ
れ、更にコア型18が上方から挿入される。このコア型18
によりプリフオーム成形金型17のキヤビテイ19と連通し
た口部成形キヤビテイ20が口部成形型内に生じ、そのキ
ヤビテイに位置する上記ピース１の周囲には、上記ピン
15,15によつてプリフオーム形成樹脂の充填間隙が確保
される。The mouth part forming die 10 containing the piece 1 in this way is moved onto the preform forming die 17 and the core die 18 is inserted from above as shown in FIG. This core mold 18
Due to this, a mouth forming cavity 20 communicating with the cavity 19 of the preform forming die 17 is generated in the mouth forming die, and the pin 1 is formed around the piece 1 located in the mouth forming die.
The filling gap of the preform-forming resin is secured by the parts 15 and 15.
プリフオームの成形は上記金型を型締したのち、ポリエ
チレンテレフタレートなどの樹脂をキヤビテイ19に射出
して行なわれる。射出された樹脂はキヤビテイ19から口
部成形キヤビテイ20ににまで充填され、第１図に示すご
とき断面構造のプリフオーム４、即ち口部本体５の内部
のみならず、サポートリング６の内部にまでフランジ２
を中間層として有するプリフオームを形成する。The preform is formed by clamping the mold and then injecting a resin such as polyethylene terephthalate into the cavity 19. The injected resin is filled from the cavity 19 to the mouth forming cavity 20, and the flange is formed not only inside the preform 4 having a sectional structure as shown in FIG. 1, that is, the mouth main body 5 but also inside the support ring 6. Two
Is formed as an intermediate layer.
なおピース１の材質は合成樹脂のみに限定されず、ゴ
ム、ガラス等の無機質、金属などであつてもよい。The material of the piece 1 is not limited to synthetic resin, but may be an inorganic material such as rubber or glass, or a metal.
（発明の効果） この発明は上述のように、合成樹脂容器のプリフオーム
の口部内に中間層として収まり、かつ本体下側部にフラ
ンジ２を有する短筒状のピース１を射出成形し、外側面
にサポートリング６を一体成形したプリフオーム４の口
部本体５に、上記ピース１をサポートリング６内にフラ
ンジ２を位置させて内設してなることから、サポートリ
ング６にも強度を付与することができ、短筒状のピース
１が耐熱性に優れた材質からなる場合には、口部全体が
熱変形し難たいものとなる。また射出成形による中間層
とは異なつて、肉厚や高さ寸法が全て一定となり、口部
の成形精度が一段と向上するなどの特長を有する。(Effects of the Invention) As described above, the present invention injection-molds a short cylindrical piece 1 that fits in the mouth of the preform of a synthetic resin container as an intermediate layer and has a flange 2 on the lower side of the main body. Since the piece 1 is internally provided in the mouth main body 5 of the preform 4 in which the support ring 6 is integrally formed with the flange 2 in the support ring 6, the support ring 6 is also given strength. When the short tubular piece 1 is made of a material having excellent heat resistance, it is difficult for the entire mouth portion to be thermally deformed. Further, unlike the intermediate layer formed by injection molding, the thickness and height dimensions are all constant, and the molding accuracy of the mouth portion is further improved.
図面はこの発明に係るプリフオームの口部構造の１実施
例を示すもので、第１図はプリフオームの縦断断面図、
第２図から第５図は口部成形工程を順に示す金型の平面
図及び縦断面図である。 １……ピース、２……フランジ ３……流通孔、４……プリフオーム ５……口部本体、６……サポートリング 10……口部成形金型、11……割型 14……サポートリング成形凹所 15……挾持用のピン 16……シリンダThe drawings show one embodiment of the mouth portion structure of the preform according to the present invention. FIG. 1 is a vertical sectional view of the preform.
2 to 5 are a plan view and a vertical cross-sectional view of a mold showing a mouth molding step in order. 1 …… Piece, 2 …… Flange 3 …… Flow hole, 4 …… Preform 5 …… Mouth body, 6 …… Support ring 10 …… Mold molding die, 11 …… Split mold 14 …… Support ring Molding recess 15 …… Clamping pin 16 …… Cylinder
Claims (1)
間層として収まり、かつ本体下側部にフランジを有する
短筒状のピースを射出成形し、外側面にサポートリング
を一体成形したプリフオームの口部に、上記ピースをプ
リフオーム成形時にサポートリング内にフランジを位置
させて内設してなることを特徴とするプリフオームの口
部構造。1. A preform mouth in which a short tubular piece that fits in the mouth of the preform of a synthetic resin container as an intermediate layer and has a flange on the lower side of the main body is injection-molded, and a support ring is integrally formed on the outer surface. In the mouth part structure of the preform, the above-mentioned piece is internally provided with a flange positioned inside a support ring during preform molding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27701687A JPH06102463B2 (en) | 1987-10-31 | 1987-10-31 | Preform mouth structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27701687A JPH06102463B2 (en) | 1987-10-31 | 1987-10-31 | Preform mouth structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01124545A JPH01124545A (en) | 1989-05-17 |
| JPH06102463B2 true JPH06102463B2 (en) | 1994-12-14 |
Family
ID=17577595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27701687A Expired - Lifetime JPH06102463B2 (en) | 1987-10-31 | 1987-10-31 | Preform mouth structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06102463B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0733054B2 (en) * | 1990-08-14 | 1995-04-12 | 日精エー・エス・ビー機械株式会社 | Synthetic resin container and manufacturing method thereof |
| JPH0724865A (en) * | 1993-07-14 | 1995-01-27 | Mitsui Petrochem Ind Ltd | Method of manufacturing bottle cap for polyester insert molding, and mold for molding bottle cap |
-
1987
- 1987-10-31 JP JP27701687A patent/JPH06102463B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01124545A (en) | 1989-05-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term |