JPS6355A - Bottle made of synthetic resin and manufacture thereof - Google Patents
Bottle made of synthetic resin and manufacture thereofInfo
- Publication number
- JPS6355A JPS6355A JP61141653A JP14165386A JPS6355A JP S6355 A JPS6355 A JP S6355A JP 61141653 A JP61141653 A JP 61141653A JP 14165386 A JP14165386 A JP 14165386A JP S6355 A JPS6355 A JP S6355A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- bottle
- synthetic resin
- injected
- hollow preform
- 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.)
- Granted
Links
Landscapes
- Details Of Rigid Or Semi-Rigid Containers (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】 （イ）産業上の利用分野 本発明は、合成樹脂製瓶及びその製造方法に関する。[Detailed description of the invention] (b) Industrial application fields The present invention relates to a synthetic resin bottle and a method for manufacturing the same.
（ロ）従来の技術及び発明が解決しようとする問題点
合成樹脂製瓶は、硝子層に比べ軽量、安全、廉価等の特
徴を有し広く利用されている。(B) Problems to be Solved by the Prior Art and the Invention Synthetic resin bottles are widely used because they are lighter, safer, and less expensive than glass bottles.
ところで、合成樹脂はその種類により物性が異なり、多
くの樹脂は熱に弱く、熱液を充填したり、充填後加熱殺
菌したりすると、瓶の変形や収縮を招いたり、瓶口部の
変形を招いたりすることがあり、特に、瓶口部の変形は
液漏れを惹起するので由々しき問題である。By the way, the physical properties of synthetic resins vary depending on their type, and many resins are sensitive to heat, so filling them with hot liquid or heating and sterilizing them after filling can cause deformation and shrinkage of the bottle, as well as deformation of the bottle mouth. In particular, deformation of the bottle mouth is a serious problem as it may cause liquid leakage.
このような熱変形の対策として、耐熱性の優れた樹脂を
使用し瓶を成形すればよいが、−般にこの種樹脂は高価
で瓶製造コストが高くなり、又、用途も限られる。As a countermeasure against such thermal deformation, bottles may be molded using resins with excellent heat resistance; however, such resins are generally expensive and increase the cost of manufacturing bottles, and their uses are also limited.
そこで、比較的安価な樹脂を主として用い、これに耐熱
性の優れた樹脂を積層して使用することが提案されてい
る。Therefore, it has been proposed to mainly use a relatively inexpensive resin and to layer this with a resin having excellent heat resistance.
前記例の一つとして、単一の金型キャビティに１回の型
締動作で２種の熱可塑性樹脂をタイミングをずらして射
出し、多層構造の中空予備成形体（プリフォーム）を成
形し、この中空予備成形体を吹込成形（ブロー成形）し
て多層構造の合成樹脂製瓶を製造する方法がある。即ち
、まず、第１の樹脂を微量射出した後、第１の樹脂と共
に第２の樹脂を同時に射出し、最後に第１の樹脂を生伍
射出して、外表面層と内表面層が第１の樹脂で中間層が
第２の樹脂の３層構造の中空予備成形体を成形し、この
中空成形体を吹込成形して多層合成樹脂製瓶を製造する
方法であり、中間層を形成する第２の樹脂として耐熱ｉ
生樹脂を使用すれば、耐熱性の優れた合成樹脂製瓶が１
与られる。As one of the above examples, two types of thermoplastic resins are injected into a single mold cavity in a single mold clamping operation at different timings, and a hollow preform having a multilayer structure is molded. There is a method of manufacturing a multilayer synthetic resin bottle by blow molding this hollow preform. That is, first, a small amount of the first resin is injected, then the second resin is simultaneously injected together with the first resin, and finally the first resin is injected until the outer surface layer and the inner surface layer are the same as the first resin. This is a method of manufacturing a multilayer synthetic resin bottle by molding a three-layer hollow preformed body made of one resin and the middle layer being a second resin, and blow molding this hollow molded body, in which the middle layer is formed. Heat resistant i as second resin
If raw resin is used, a synthetic resin bottle with excellent heat resistance can be made.
given.
もっとも、このようにして形成された耐熱性を有する３
層構造の合成樹脂製瓶であっても、熱液の充填等の時に
、瓶口部の変形を起こし液漏れを生じさせることがある
。瓶胴部の多少の変形は商品価値に影響を及ぼさなく、
又、瓶胴部の大きな変形は商品出荷前に選別後き取りが
可能なのに比べて、瓶口部の変形は、多少でおっても液
漏れを生ずることが多く、又、蓋締めすると瓶口部の変
形を見過しがちで、出荷後に液漏れのためケース内の全
商品を駄目にする結果をもたらすので、全く好ましくな
い。However, the heat-resistant 3 formed in this way
Even if the bottle is made of synthetic resin and has a layered structure, the mouth of the bottle may deform when it is filled with hot liquid, causing liquid leakage. Slight deformation of the bottle body does not affect the product value.
In addition, large deformations in the bottle body can be removed after sorting before shipping the product, but even slight deformations in the bottle mouth often cause liquid leakage, and when the lid is tightened, the bottle mouth This is totally undesirable because it is easy to overlook the deformation of the parts, which results in the entire product inside the case being ruined due to liquid leakage after shipping.
瓶又は瓶口部に耐熱性を付与する他の方法として、中空
予備成形体又は吹込成形後の瓶を加熱して樹脂を結晶化
（白化）して耐熱性を付与する方法がある。しかし、加
熱により寸法変形を生ずることがあり、又、加熱工程の
付与によるコストが掛かり、この方法も好ましくない。Another method for imparting heat resistance to a bottle or bottle mouth is a method of imparting heat resistance by heating a hollow preform or a blow-molded bottle to crystallize (whiten) the resin. However, heating may cause dimensional deformation, and the heating step increases costs, so this method is also not preferred.
本発明は、瓶口部の熱変形を防止する目的でなされたも
のである。The present invention was made for the purpose of preventing thermal deformation of the bottle mouth.
（ハ）問題点を解決するための手段
上記目的を達成する本発明の合成樹脂製瓶は、瓶口部を
、その外表面層と内表面層が耐熱性を有する熱可塑性合
成樹脂よりなる５層以上の積層構造にした合成樹脂製瓶
で゛あり、金型キャビティに、第１の熱可塑性合成樹脂
を最初に射出し、次に第１の樹脂の射出を中断し、第１
の樹脂より耐熱性の優れた第２の熱可塑性合成樹脂を射
出し、この第２の樹脂を金型との接触により冷却しつつ
ある第１の樹脂の中を通過させ、その後、第１の樹脂と
第２の樹脂を同時に又は第１の樹脂のみを射出して、合
成樹脂製瓶の中空予備成形体を射出成形し、次いでこの
中空予備成形体を吹込成形して製造される。(c) Means for Solving the Problems The synthetic resin bottle of the present invention that achieves the above objects has a bottle mouth portion made of a thermoplastic synthetic resin having heat resistance. It is a synthetic resin bottle with a laminated structure of more than one layer, in which the first thermoplastic synthetic resin is first injected into the mold cavity, then the injection of the first resin is interrupted, and the first thermoplastic synthetic resin is injected into the mold cavity.
A second thermoplastic synthetic resin having better heat resistance than that of the resin is injected, the second resin is passed through the first resin which is being cooled by contact with the mold, and then the first resin is injected. It is manufactured by injecting the resin and the second resin simultaneously or by injecting only the first resin to form a hollow preform of a synthetic resin bottle, and then blow molding the hollow preform.
次に、添附の図面に従い、本発明の合成樹脂製瓶とその
製造方法の一例を説明する。Next, an example of the synthetic resin bottle of the present invention and its manufacturing method will be described with reference to the accompanying drawings.
第１図に示されるように、金型キャビティ１にゲート２
より第１の熱可塑性合成樹脂３の溶融体を射出注入した
後、射出を中断する。As shown in FIG. 1, there is a gate 2 in the mold cavity 1.
After the melt of the first thermoplastic synthetic resin 3 is injected, the injection is interrupted.
次いで、第１の樹脂３より耐熱性の優れた第２の熱可塑
性合成樹脂４の溶融体を射出注入し、第２図に示される
ように、第２の樹脂を金型との接触により冷却しつつあ
る第１の樹脂３の中を通過させる。Next, a melt of a second thermoplastic synthetic resin 4 having better heat resistance than the first resin 3 is injected, and as shown in FIG. 2, the second resin is cooled by contact with a mold. The resin is passed through the first resin 3 which is being processed.
その後、第１の樹脂３と第２の樹脂４を同時に（第３図
の例〉又は第１の樹脂のみを射出注入して、第３図に示
されるように合成樹脂製瓶の中空予備成形体５を得る。Thereafter, the first resin 3 and the second resin 4 are simultaneously injected (example shown in Figure 3) or only the first resin is injected to form a hollow preform of a synthetic resin bottle as shown in Figure 3. Get body 5.
次に、この中空予備成形体５を、吹込成形、即ち、大き
な型キャビティを有する金型キャビティ内で、ガス圧に
より金型キャビティに一致するように膨張させ、第４図
に示される合成樹脂製瓶６を得る。この瓶６の口部７の
積層構造は、第４図に示されるように５層構造で、内表
面層と外表面層が耐熱性を有する第２の樹脂４で形成さ
れ、内層が第１の樹脂３、第２の樹脂４、第１の樹脂３
の順に形成されている。Next, this hollow preform 5 is blow molded, that is, expanded in a mold cavity having a large mold cavity by gas pressure to match the mold cavity, and is made of synthetic resin as shown in FIG. Obtain bottle 6. The laminated structure of the mouth part 7 of this bottle 6 is a five-layer structure as shown in FIG. resin 3, second resin 4, first resin 3
It is formed in the following order.
（ニ）実施例 以下に、本発明の実施例を示す。(d) Examples Examples of the present invention are shown below.
長さ１３１ｍ、外形２５Ｍ、平均厚さ４履の中空予備成
形体の金型キャビティに、まず第１の樹脂としてポリエ
チレンテレフタレート（ＰＥＴ〉を２．８秒間射出し、
０．１秒間射出を中断した後、第２の樹脂として耐熱性
を有する、主としてフタル酸、エチレングリコール及び
ビスフェノールＡより脱水重合により作られる［Ｕポリ
マー（Ｕ−８４００）Ｊ （ユニチカ■製）を０．１
秒間射出した後、第１の樹脂であるポリエチレンテレフ
タレート（ＰＥＴ）を１０秒間射出し、１０秒間冷却し
て中空予備成形体を得る。この中空予備成形体を延伸吹
込成形（延伸ブロー成形）し、内容量１リツトルの合成
樹脂製瓶を製造した。First, polyethylene terephthalate (PET) was injected as the first resin for 2.8 seconds into the mold cavity of a hollow preformed body with a length of 131 m, an external diameter of 25 m, and an average thickness of 4 shoes.
After interrupting the injection for 0.1 seconds, a heat-resistant second resin [U Polymer (U-8400) J (manufactured by Unitika), which is made by dehydration polymerization mainly from phthalic acid, ethylene glycol, and bisphenol A, was added. 0.1
After injecting for seconds, the first resin, polyethylene terephthalate (PET), is injected for 10 seconds and cooled for 10 seconds to obtain a hollow preform. This hollow preform was stretch blow molded to produce a synthetic resin bottle with an inner capacity of 1 liter.
この瓶の口部は、内表面層と外表面層が第２の樹脂で形
成され、内層が第１の樹脂、第２の（ゑ１脂、第１の樹
脂の順に形成された５層構造で、下記の条件で熱液の充
填を行ったが、液漏れは全くなく、その口部は優れた耐
熱ヰを示した。The mouth of this bottle has a five-layer structure in which the inner surface layer and outer surface layer are made of a second resin, and the inner layer is made of a first resin, a second resin, and a first resin. When the hot liquid was filled under the following conditions, there was no liquid leakage and the mouth showed excellent heat resistance.
充填条件 充填熱液の温度 ９０’Ｃ キヤツピング アルミキャップを使用。Filling conditions Temperature of filling hot liquid 90’C Capping Uses an aluminum cap.
キャップをした瓶を３分間横に倒した状態で放置し、次
に正立させて５分間放置し、室温の水をシャワーして冷
却する。Leave the capped bottle on its side for 3 minutes, then stand upright for 5 minutes, and cool by showering with room temperature water.
（ホ）作用及び効果
本発明の合成樹脂製瓶は、上）ホのようにその瓶口部を
、外表面層と内表面層を耐熱性樹脂で形成した５層以上
の積層構造にしたので、熱液を充填しても寸法変形を防
止でき、その実用性は高い。(e) Functions and Effects The synthetic resin bottle of the present invention has a laminate structure of five or more layers in which the outer surface layer and the inner surface layer are made of heat-resistant resin, as shown in (a) above. , dimensional deformation can be prevented even when filled with hot liquid, and its practicality is high.
第１図乃至第３図は合成樹脂製瓶の製造方法のの一例の
説明図、第４図は本発明の合成樹脂製瓶の一例の断面図
である。
１・・・・・・・・・型キャビティ、２・・・・・・・
・・ゲート、３・・・・・・・・・第１の樹脂、４・・
・・・・・・・第２の樹脂、５・・・・・・・・・中空
予備成形体、６・・・・・・・・・瓶、７・・・・・・
・・・瓶口部。1 to 3 are explanatory diagrams of an example of a method for manufacturing a synthetic resin bottle, and FIG. 4 is a sectional view of an example of a synthetic resin bottle of the present invention. 1...Mold cavity, 2...
...Gate, 3...First resin, 4...
......Second resin, 5...Hollow preform, 6...Bottle, 7...
...Bottle mouth.
Claims (2)
する熱可塑性合成樹脂よりなる５層以上の積層構造にし
た合成樹脂製瓶。(1) A synthetic resin bottle whose mouth part has a laminated structure of five or more layers, the outer surface layer and the inner surface layer of which are made of heat-resistant thermoplastic synthetic resin.
初に射出し、次に第１の樹脂の射出を中断し、第１の樹
脂より耐熱性の優れた第２の熱可塑性合成樹脂を射出し
、この第２の樹脂を金型との接触により冷却しつつある
第１の樹脂の中を通過させ、その後、第１の樹脂と第２
の樹脂を同時に又は第１の樹脂のみを射出して、合成樹
脂製瓶の中空予備成形体を射出成形し、次いでこの中空
予備成形体を吹込成形する合成樹脂製瓶の製造方法。(2) First, the first thermoplastic synthetic resin is injected into the mold cavity, and then the injection of the first resin is interrupted, and a second thermoplastic synthetic resin having better heat resistance than the first resin is injected. is injected, the second resin is passed through the first resin which is being cooled by contact with the mold, and then the first resin and the second resin are injected.
A method for manufacturing a synthetic resin bottle, which comprises injection molding a hollow preform of a synthetic resin bottle by simultaneously injecting the first resin or only the first resin, and then blow molding the hollow preform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61141653A JPS6355A (en) | 1986-06-18 | 1986-06-18 | Bottle made of synthetic resin and manufacture thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61141653A JPS6355A (en) | 1986-06-18 | 1986-06-18 | Bottle made of synthetic resin and manufacture thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6355A true JPS6355A (en) | 1988-01-05 |
| JPH0512218B2 JPH0512218B2 (en) | 1993-02-17 |
Family
ID=15297049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61141653A Granted JPS6355A (en) | 1986-06-18 | 1986-06-18 | Bottle made of synthetic resin and manufacture thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6355A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59101798U (en) * | 1982-12-22 | 1984-07-09 | 九州日立マクセル株式会社 | multifunctional toilet bowl |
| US4696865A (en) * | 1984-04-20 | 1987-09-29 | Monsanto Company | Hollow copolyamide article |
| US4721654A (en) * | 1984-04-20 | 1988-01-26 | Monsanto Company | Hollow, molecularly oriented copolyamide article |
| JPS649145A (en) * | 1987-02-27 | 1989-01-12 | Nissei Asb Machine Co Ltd | Heat resistant structure of neck part of synthetic resin container |
| US4990301A (en) * | 1989-01-25 | 1991-02-05 | Continental Pet Technologies, Inc. | Method and apparatus for injection molding of multilayer preforms |
| JPH0329738A (en) * | 1989-06-23 | 1991-02-07 | Dainippon Printing Co Ltd | heat resistant multilayer bottle |
| US6180042B1 (en) * | 1995-11-08 | 2001-01-30 | Honda Giken Kogyo Kabushiki Kaisha | Process for producing molded article made of synthetic resin |
| DE112020005704T5 (en) | 2019-12-23 | 2022-09-08 | Tech. Taiyo Kogyo Co., Ltd. | Laminate and anti-rust process |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2360292B1 (en) | 2010-02-08 | 2012-03-28 | Roth & Rau AG | Parallel plate reactor for uniform thin film deposition with reduced tool foot-print |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5416582A (en) * | 1977-07-07 | 1979-02-07 | Asahi Chem Ind Co Ltd | Laminated film |
| JPS5430272A (en) * | 1977-08-12 | 1979-03-06 | Asahi Chem Ind Co Ltd | Laminated film |
| JPS5453179A (en) * | 1977-10-04 | 1979-04-26 | Mitsui Petrochem Ind Ltd | Multi-layer laminate |
| JPS5669434U (en) * | 1979-11-01 | 1981-06-09 | ||
| JPS56167442A (en) * | 1980-05-30 | 1981-12-23 | Dainippon Printing Co Ltd | Multilayer drawn bottle and its manufacture |
| JPS5899034U (en) * | 1981-12-26 | 1983-07-05 | 積水化成品工業株式会社 | multilayer container |
| JPS6169539A (en) * | 1984-09-14 | 1986-04-10 | 日精エ−・エス・ビ−機械株式会社 | Synthetic resin vessel for recovery |
-
1986
- 1986-06-18 JP JP61141653A patent/JPS6355A/en active Granted
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5416582A (en) * | 1977-07-07 | 1979-02-07 | Asahi Chem Ind Co Ltd | Laminated film |
| JPS5430272A (en) * | 1977-08-12 | 1979-03-06 | Asahi Chem Ind Co Ltd | Laminated film |
| JPS5453179A (en) * | 1977-10-04 | 1979-04-26 | Mitsui Petrochem Ind Ltd | Multi-layer laminate |
| JPS5669434U (en) * | 1979-11-01 | 1981-06-09 | ||
| JPS56167442A (en) * | 1980-05-30 | 1981-12-23 | Dainippon Printing Co Ltd | Multilayer drawn bottle and its manufacture |
| JPS5899034U (en) * | 1981-12-26 | 1983-07-05 | 積水化成品工業株式会社 | multilayer container |
| JPS6169539A (en) * | 1984-09-14 | 1986-04-10 | 日精エ−・エス・ビ−機械株式会社 | Synthetic resin vessel for recovery |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59101798U (en) * | 1982-12-22 | 1984-07-09 | 九州日立マクセル株式会社 | multifunctional toilet bowl |
| US4696865A (en) * | 1984-04-20 | 1987-09-29 | Monsanto Company | Hollow copolyamide article |
| US4721654A (en) * | 1984-04-20 | 1988-01-26 | Monsanto Company | Hollow, molecularly oriented copolyamide article |
| JPS649145A (en) * | 1987-02-27 | 1989-01-12 | Nissei Asb Machine Co Ltd | Heat resistant structure of neck part of synthetic resin container |
| US5647495A (en) * | 1987-02-27 | 1997-07-15 | Nissei Asb Machine Co., Ltd. | Heat-resistant construction of a neck of a synthetic resin container |
| US4990301A (en) * | 1989-01-25 | 1991-02-05 | Continental Pet Technologies, Inc. | Method and apparatus for injection molding of multilayer preforms |
| JPH0329738A (en) * | 1989-06-23 | 1991-02-07 | Dainippon Printing Co Ltd | heat resistant multilayer bottle |
| US6180042B1 (en) * | 1995-11-08 | 2001-01-30 | Honda Giken Kogyo Kabushiki Kaisha | Process for producing molded article made of synthetic resin |
| DE112020005704T5 (en) | 2019-12-23 | 2022-09-08 | Tech. Taiyo Kogyo Co., Ltd. | Laminate and anti-rust process |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0512218B2 (en) | 1993-02-17 |
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