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JPS5929130A - How to make saturated polyester bottles - Google Patents

How to make saturated polyester bottles

Info

Publication number
JPS5929130A
JPS5929130A JP57137410A JP13741082A JPS5929130A JP S5929130 A JPS5929130 A JP S5929130A JP 57137410 A JP57137410 A JP 57137410A JP 13741082 A JP13741082 A JP 13741082A JP S5929130 A JPS5929130 A JP S5929130A
Authority
JP
Japan
Prior art keywords
coating film
bottle
saturated polyester
bottomed
roughened
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.)
Pending
Application number
JP57137410A
Other languages
Japanese (ja)
Inventor
Nobuyuki Takakusaki
高草木 信之
Hiroshi Noma
野間 拓
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyo Seikan Group Holdings Ltd
Original Assignee
Toyo Seikan Kaisha Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toyo Seikan Kaisha Ltd filed Critical Toyo Seikan Kaisha Ltd
Priority to JP57137410A priority Critical patent/JPS5929130A/en
Publication of JPS5929130A publication Critical patent/JPS5929130A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2791/00Shaping characteristics in general
    • B29C2791/001Shaping in several steps
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2949/00Indexing scheme relating to blow-moulding
    • B29C2949/07Preforms or parisons characterised by their configuration
    • B29C2949/0715Preforms or parisons characterised by their configuration the preform having one end closed
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C41/00Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/02Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C41/14Dipping a core
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/02Combined blow-moulding and manufacture of the preform or the parison
    • B29C49/06Injection blow-moulding
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C59/00Surface shaping of articles, e.g. embossing; Apparatus therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING 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
    • B29K2995/00Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037Other properties
    • B29K2995/0072Roughness, e.g. anti-slip

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (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】 関し、さらに詳しくはガスバリヤ−性の優れた延沖一吹
込成形飽和ポリエステルボトルの製造方法に関する。
DETAILED DESCRIPTION OF THE INVENTION More specifically, the present invention relates to a method for producing a Nobeki blow-molded saturated polyester bottle having excellent gas barrier properties.

延伸−吹込成形飽和ポリエスデルボトル、例えばぼりエ
チレンテレフタシートホトルは、ガスバリヤ−性,透明
性,耐衝重性等の容器特性に優れており、最近各種の内
容品の収納用に実用化されつつある。しかしビールや炭
酸飲料等の加圧炭酸ガスを含有する内容物を充填,密封
した場合、経時につれて炭酸がスが、若干ではあるが壁
部を透過して失われ、一方酸素が、若干ではあるが壁部
を透過して侵入して、内容物のフレーバが損ぜられ易い
Stretched and blow-molded saturated polyester bottles, such as ethylene terephthalate sheets, have excellent container properties such as gas barrier properties, transparency, and impact resistance, and have recently been put into practical use for storing various contents. It's coming. However, when filling and sealing contents containing pressurized carbon dioxide gas, such as beer or carbonated drinks, a small amount of carbon dioxide passes through the wall and is lost over time, while a small amount of oxygen is lost. can easily penetrate through the walls and spoil the flavor of the contents.

その対策としてボトルの内面および/=1だは外面に炭
酸ガスおよび酸素に対するバリヤー性の1憂れた塗膜、
例えば塩化ビニリデン共重合体よりなる塗膜を形成する
方法が提案されているが、セトルの形状によっては(例
えばエンボス又はビード等が形成されている場合)、未
塗布部分もしくは塗膜のどく薄い部分を生じて、ボトル
全体としてのバリヤー性が不十分であったり、あるい(
d一塗膜の密着性が満足でなく、充填密封後の経時につ
れて、塗膜の膨れや、亀裂を生じ易いという問題が生ず
る。パリノンに」二記塗膜を形成する場合d、、・、O
 リソンの形状が一般に単調であること、および延伸−
吹込成形前に100℃近くまで(ポリエチレンテレフタ
レートの場合)加熱することによる密着性の向上が起る
ことによると推測されるが、」二記の問題は生じ難い。
As a countermeasure, a coating film with barrier properties against carbon dioxide gas and oxygen is applied to the inner and/or outer surfaces of the bottle.
For example, a method of forming a coating film made of vinylidene chloride copolymer has been proposed, but depending on the shape of the settle (for example, if embossed or beaded), uncoated areas or areas where the coating film is very thin have been proposed. This may cause the barrier properties of the bottle as a whole to be insufficient, or (
(d) The adhesion of the coating film is unsatisfactory, and the problem arises that the coating film tends to swell and crack as time passes after filling and sealing. When forming a coating film on Parinon, d,...,O
The shape of the lithon is generally monotonous, and the stretching
It is presumed that this is due to the improvement in adhesion caused by heating to nearly 100° C. (in the case of polyethylene terephthalate) before blow molding, but the second problem is unlikely to occur.

しかしながらパリノンの表面積は、当該パリソンから成
形されるべきボトルの表面積の数分の1であるため、・
やりフンに形成されるガス・ζリヤー性塗膜の厚さを、
ボトルの夫の数倍にする必要がある、すなわち少なくと
も数10μmの厚さにする必要がある。このような厚塗
りは通常の方法では困難であるという問題を有する。
However, since the surface area of parison is a fraction of the surface area of the bottle to be formed from the parison,
The thickness of the gas/zeta-resist coating film formed on the spear,
It needs to be several times the thickness of the bottle, ie at least several tens of μm thick. The problem is that such thick coating is difficult with normal methods.

本発明は以」ニに述べた従来技術の問題点の解消を図る
ことを目的とする。
It is an object of the present invention to solve the problems of the prior art described below.

上記目的を達成するため、本発明は、飽和ポリエステル
よりなる有底パリソンの内面および/′=!たは外面に
ガスバリヤ−性塗料を塗布、乾燥した後、該有底パリノ
ンを延伸−吹込成形して、(? トルを形成する方法で
あって、該塗料の塗布前に該有底パリソンの該内面およ
び/または該外面が粗面化されていることを特徴とする
飽和ポリエステルボトルの製造方法を提供するものであ
る。
In order to achieve the above object, the present invention provides an inner surface of a bottomed parison made of saturated polyester and /'=! This method involves applying a gas-barrier paint to the outer surface of the paint, drying it, and then stretching and blow-molding the bottomed parison to form a (?tor). The present invention provides a method for producing a saturated polyester bottle, the inner surface and/or the outer surface of which is roughened.

以下図面を参照しながら本発明について説明するO 第1図において、1は有底・、OIJノンであって、飽
和プリエステル、例えばポリエチレン−フレフタレート
よりなり、通常は射出成形法によって形成される。2は
ねじ部であシ、3は支持リングであって、両者は延伸−
吹込成形によってボトル(図示されない)に形成された
後も、原形状を保持する。4が胴部であって、形成され
たボトルの肩部。
The present invention will be described below with reference to the drawings. In Figure 1, 1 is a bottomed, non-OIJ, made of a saturated preester, such as polyethylene phrephthalate, and usually formed by injection molding. . 2 is a threaded portion, 3 is a support ring, and both are stretched.
It retains its original shape even after being formed into a bottle (not shown) by blow molding. 4 is the body and the formed shoulder of the bottle.

胴壁部、および底壁部となる。They form the trunk wall and the bottom wall.

第2図の・やりノン1′は、第1図の/Fリソノンの胴
部4が粗面化されたものである。このような粗面化は・
やりノンlに7ヨツトピーニング、又はザブ°′ ンド≠ラスチングを施すことによって得ることができる
。あるいは射出成形機の、胴部4′に対応するコアおよ
びキャビティの部分の表面を粗面化しておいて、射出成
形時に粗面化した・やりノン1′を形成してもよい。こ
の場合は、コアの抜き出しを容易にするだめ、図のよう
に胴部4′の内面に抜き勾配を設けておくことが好まし
い。
The lisonnon 1' shown in FIG. 2 is obtained by roughening the body 4 of the /F lisonon shown in FIG. This kind of roughening is...
It can be obtained by subjecting a spear non-l to 7-yoat peening or sub-band lasting. Alternatively, the surfaces of the core and cavity portions corresponding to the body 4' of the injection molding machine may be roughened, and the roughened lance 1' may be formed during injection molding. In this case, in order to facilitate the extraction of the core, it is preferable to provide a draft angle on the inner surface of the body 4' as shown in the figure.

ねじ部2.支持リング3近傍部は、ガスバリヤ−性を向
」二さぎるために、必ずしもガスバリヤ−性塗膜を形成
する必要がないので、粗面化する必要がない。むしろ粗
面化することは、ねじ部2と蓋部(図示されない)間の
密封性を損い易く、また延伸−吹込成形のさいに吹込用
加圧気体の漏洩を招き易いので好”ましくない。
Threaded part 2. The area near the support ring 3 does not necessarily need to be coated with a gas barrier coating in order to improve gas barrier properties, so there is no need to roughen the surface. Rather, it is preferable to roughen the surface because it tends to impair the sealing between the threaded part 2 and the lid part (not shown) and also tends to cause leakage of pressurized gas for blowing during stretch-blow molding. do not have.

粗面化された面の粗さは、約25〜150メノシ、、、
(メツシュ°1インチの長さ間の網目の数)であること
が望ましい。約150メツシユより小さいと、塗膜を十
分に厚く形成することが困難となり、一方約25メツシ
ー上り大きいと、延伸−吹込成形されたボトルの表面が
マット状になって光沢が失われ易いからである。
The roughness of the roughened surface is approximately 25 to 150 mm.
(number of meshes per inch length). If it is smaller than about 150 meshes, it will be difficult to form a sufficiently thick coating, while if it is larger than about 25 meshes, the surface of the stretch-blown bottle will tend to become matte and lose its luster. be.

次に粗面化された胴部4′の上に、ガスバリヤ−性塗膜
6(第3図)を形成する。そのだめの塗膜としては、酸
素、および炭酸がスに対し大きなバリヤー性を有する塩
化ビニリデン共重合体よりなるものが好適に用いられる
。このような塗膜は、例えば塩化ビニリデン単量体、ア
クリル系単量体又はメタクリル系単量体 からなる共重
合体、あるいは塩化ビニリデン単量体、アクリル系又は
メタクリル系単量体とエチレン系不飽和単量体よりなる
共重体の水性ラテックスを浸7k又はスプレー等によっ
て塗布後、乾燥することによって形成される。胴部4′
は粗面化されているので、平滑な胴部4の場合には不可
能であった厚い塗膜を1目塗シで形成することができる
。さらに厚い塗膜を形成したい場合は、数回塗シを行な
ってもよいことはいうまでもない。なお少なくとも粗面
化した面の凹凸が隠れる程度にまで、塗膜を厚く形成す
ることが、光沢あるボトルを得るために望ましい。
Next, a gas barrier coating 6 (FIG. 3) is formed on the roughened body 4'. As the coating film, a film made of vinylidene chloride copolymer having a high barrier property against oxygen and carbonic acid gas is preferably used. Such coating films are made of, for example, copolymers of vinylidene chloride monomers, acrylic monomers, or methacrylic monomers, or copolymers of vinylidene chloride monomers, acrylic or methacrylic monomers, and ethylenic monomers. It is formed by applying an aqueous latex of a copolymer made of saturated monomers by dipping or spraying, and then drying it. Body 4'
Since the surface of the body part 4 is roughened, it is possible to form a thick coating film in one coat, which is impossible in the case of a smooth body part 4. Needless to say, if it is desired to form a thicker coating film, it is possible to apply several coats. Note that in order to obtain a glossy bottle, it is desirable to form a coating film thick enough to at least hide the unevenness of the roughened surface.

以上のようにして塗膜6が形成されたパリソン1”は、
当該ポリエステルのガラス転移点以上、結晶化温度よシ
低い所定温度、例えばJ?リエチレンテレフタレートの
場合は約90’Cに胴部4“を加熱された後、公知の方
法により延伸−吹込成形されて、2軸延伸された&トル
となる。この際塗膜6の厚さは、表面積の増加の割合に
応じて減少する。
The parison 1'' on which the coating film 6 was formed as described above is
A predetermined temperature higher than the glass transition point of the polyester and lower than the crystallization temperature, for example J? In the case of polyethylene terephthalate, the body 4'' is heated to about 90'C and then stretched and blow molded by a known method to form a biaxially stretched &tor; at this time, the thickness of the coating film 6 is , decreases according to the rate of increase in surface area.

上記加熱に起因すると推測されるが、塗膜と&)ル本体
との密着性は優れており、充填後の経時に伴う膨れや亀
裂等は発生し難い。しかしさらに密着性を向上さぜだい
場合は、粗面化した胴部4′を公知の手段によりコロナ
放電処理することが好ましい。なお粗面化した面の粗度
が前記の所定範囲内にある鳴合は、延伸−吹込成形時の
利料の流れにもとづくものと推測されるが、光沢のある
sf トルを得ることができる。
Although it is presumed that this is due to the above heating, the adhesion between the coating film and the main body of the &) is excellent, and blisters, cracks, etc. that occur over time after filling are unlikely to occur. However, if it is desired to further improve the adhesion, it is preferable to subject the roughened body portion 4' to corona discharge treatment by known means. Note that the roughness of the roughened surface within the above-mentioned predetermined range is presumed to be based on the flow of interest during stretch-blow molding, but it is possible to obtain a glossy SF texture. .

本発明は以上の例によって限定されるものでなく、例え
ば胴部の内面又は外面のみを粗面化して、当該粗面化し
た而にがスパリャー性塗膜を形成してもよい。
The present invention is not limited to the above examples; for example, only the inner or outer surface of the body may be roughened, and a sparring coating may be formed on the roughened surface.

本発明によれば、パリソンの表面を粗面化した後、ガス
・61Jヤー性塗料を塗布、乾燥するので、平均厚さの
厚い塗膜を形成することができるという効果を奏するこ
とができる。
According to the present invention, after roughening the surface of the parison, a gas-based 61J paint is applied and dried, so it is possible to form a coating film with a thick average thickness.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は、本発明に適用される有底パリノンの例の縦断
面図、第2図は第1図の有底・F IJツノが粗面化さ
れた後の状態を示す縦断面図1.第3図は第2図の有底
・P IJノンにがス・< IJヤー性塗膜カ形成され
た後の状態を示す縦断面し1である。 i、t’、i”・・・有底・Qリノン、6 ・塗膜、。 第1図  第2図 第 3 図
FIG. 1 is a vertical cross-sectional view of an example of a bottomed parinon applied to the present invention, and FIG. 2 is a vertical cross-sectional view showing the state after the bottomed F IJ horn of FIG. 1 has been roughened. .. FIG. 3 is a vertical cross-section 1 showing the state after the bottomed P IJ non-stick coating of FIG. 2 has been formed. i, t', i''...Bottomed Q-linon, 6, coating film. Figure 1 Figure 2 Figure 3

Claims (1)

【特許請求の範囲】[Claims] (])  飽和ア1?リエステルよりなる有底パリソン
の内面および/まだは外面にガスバリヤ−性塗料を塗布
、乾燥した後、該有底・9 IJソンを延伸−吹lΔ成
形してボI・ルを形成する方法であって、該塗料の塗布
前に該有底・F IJソンの該内面および/−1:だは
該外面が粗面化されていることを特徴とする飽和ポリエ
ステルボトルの製造方法。
(]) Saturation A1? This is a method in which a gas barrier paint is applied to the inner and/or outer surfaces of a bottomed parison made of polyester, dried, and then the bottomed 9 IJ son is stretched and blown to form a ball. A method for producing a saturated polyester bottle, characterized in that the inner surface and/or outer surface of the bottomed FIJ bottle are roughened before application of the paint.
JP57137410A 1982-08-09 1982-08-09 How to make saturated polyester bottles Pending JPS5929130A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57137410A JPS5929130A (en) 1982-08-09 1982-08-09 How to make saturated polyester bottles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57137410A JPS5929130A (en) 1982-08-09 1982-08-09 How to make saturated polyester bottles

Publications (1)

Publication Number Publication Date
JPS5929130A true JPS5929130A (en) 1984-02-16

Family

ID=15197984

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57137410A Pending JPS5929130A (en) 1982-08-09 1982-08-09 How to make saturated polyester bottles

Country Status (1)

Country Link
JP (1) JPS5929130A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0322239A (en) * 1989-06-19 1991-01-30 Matsushita Electric Ind Co Ltd Reel stand moving device
WO2001047688A3 (en) * 1999-12-24 2002-07-11 Resilux Process and apparatus for treating plastic preforms
JP2002326220A (en) * 2001-04-27 2002-11-12 Toppan Printing Co Ltd Method for manufacturing two-layer preform
DE102010015019A1 (en) * 2010-04-14 2011-10-20 Krones Ag Premold for producing e.g. polyethylene terephthalate bottle, utilized for filling beverage, has hollow body comprising outer and inner surfaces, where region with absorption or reflection for thermal radiation is arranged on surfaces
JP2016501143A (en) * 2012-11-13 2016-01-18 ハイネケン サプライ チェーン ベー.フェー.Heineken Supply Chain B.V. Container, preform assembly and method and apparatus for forming a container
JP2017088209A (en) * 2015-11-10 2017-05-25 ザ コカ・コーラ カンパニーThe Coca‐Cola Company Resin container and manufacturing method thereof
JP2017109410A (en) * 2015-12-17 2017-06-22 株式会社吉野工業所 Container manufacturing method and preform

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52129769A (en) * 1976-02-13 1977-10-31 Ici Ltd Coating method

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52129769A (en) * 1976-02-13 1977-10-31 Ici Ltd Coating method

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0322239A (en) * 1989-06-19 1991-01-30 Matsushita Electric Ind Co Ltd Reel stand moving device
WO2001047688A3 (en) * 1999-12-24 2002-07-11 Resilux Process and apparatus for treating plastic preforms
JP2002326220A (en) * 2001-04-27 2002-11-12 Toppan Printing Co Ltd Method for manufacturing two-layer preform
DE102010015019A1 (en) * 2010-04-14 2011-10-20 Krones Ag Premold for producing e.g. polyethylene terephthalate bottle, utilized for filling beverage, has hollow body comprising outer and inner surfaces, where region with absorption or reflection for thermal radiation is arranged on surfaces
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