JPS61273927A - Manufacture of pet bottle having gas barrier property - Google Patents
Manufacture of pet bottle having gas barrier propertyInfo
- Publication number
- JPS61273927A JPS61273927A JP60115479A JP11547985A JPS61273927A JP S61273927 A JPS61273927 A JP S61273927A JP 60115479 A JP60115479 A JP 60115479A JP 11547985 A JP11547985 A JP 11547985A JP S61273927 A JPS61273927 A JP S61273927A
- Authority
- JP
- Japan
- Prior art keywords
- gas barrier
- pet
- preform
- bottle
- film
- 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
Links
Landscapes
- Containers Having Bodies Formed In One Piece (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
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、に、ガスバリヤー性に優れたＰＥＴボトルの
製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates primarily to a method for manufacturing a PET bottle with excellent gas barrier properties.
（従来技術とその問題点）
ＰＥＴ製２軸延伸ボトルは１食品に対する安全性、透明
性、力学的性質等に優れているので各種の容器として盛
んに使用されている。しかし、このＰＥＴボトルにも、
耐熱性に弱く炭酸ガスや酸素ガスに対するに、ガスバリ
ヤー性が低いという欠点がある。(Prior art and its problems) PET biaxially stretched bottles are widely used as various containers because they are excellent in safety, transparency, mechanical properties, etc. for foods. However, this PET bottle also has
It has the disadvantage of poor heat resistance and poor gas barrier properties against carbon dioxide and oxygen gases.
ＰＥＴボトルのに、ガスバリヤー性を向上するための公
知の方法としては、下記の（イ）〜（ハ）の方法がある
。Known methods for improving the gas barrier properties of PET bottles include methods (a) to (c) below.
（イ）ＰＶＤＣなどのに、ガスバリヤー性材料を、成形
されたＰＥＴボトルに被覆する方法。(a) A method of coating a molded PET bottle with a gas barrier material such as PVDC.
（ロ）ＰＥＴ材Ｎをエチレンビニルアルコールや特殊ア
マイド等のに、ガスバリヤー性材料と一緒に、共押出法
或は共射出成形法によりプリフォームとして形成し、次
いでこのプリフォームを延伸ブロー成形してボトルを製
造する方法。(b) PET material N is formed into a preform by co-extrusion or co-injection molding with a gas barrier material such as ethylene vinyl alcohol or special amide, and then this preform is stretch blow molded. How to make bottles.
（ハ）に、ガスバリヤー性材料で作ったフィルムを成形
されたＰＥＴボトルの表面に装着し、熱収縮させる方法
。(c) A method of attaching a film made of a gas barrier material to the surface of a molded PET bottle and heat-shrinking it.
しかし、これらの（イ）〜（ハ）の方法には、それぞれ
下記のような問題点があり、未だ充分とは言えない、即
ち、
（イ）の方法では、に、ガスバリヤー性材料を溶液ま、
たは分散状態にする必要があり、使用材料が
制限上
、・ される、また、被覆された表面の平滑度
、接着強度なども充分なものが得られていない。However, these methods (a) to (c) each have the following problems and are still not satisfactory. Ma,
The materials used are limited, and the coated surface does not have sufficient smoothness or adhesive strength.
′ （ロ）の方法では、共押出法によって中間
的に作られたパイプからプリフォームを成形する際に。′ In method (b), when molding a preform from a pipe made intermediately by coextrusion.
発生する切屑が、に、ガスバリヤー性材料とＰＥＴとの
多層成形物であるので、これを粉砕して再使用すると、
ＰＥＴ中にに、ガスバリヤー材が分散して。The generated chips are multilayer molded products of gas barrier material and PET, so if you crush them and reuse them,
Gas barrier material is dispersed in PET.
透明性が著しく阻害される。この切屑を再使用しないで
廃棄してしまうと製品コストが高くなり実用的でない。Transparency is severely hampered. If these chips are discarded without being reused, the product cost will increase and it is not practical.
共射出成形法によってパリソンを作り、延伸ブローして
ボトルを製造すれば、切屑の発生はない、 が
、ＰＥＴ以外の材料を２種類以上使用することはまず困
難で、例えばＰＥＴ暦とに、ガスバリヤー材、
の間に接着剤層などを入れることは出来ない。If a parison is made by co-injection molding and a bottle is made by stretch-blowing, no chips will be generated. However, it is difficult to use two or more materials other than PET, for example, PET and gas. barrier material,
It is not possible to put an adhesive layer between them.
また、パリソンを作る際に、溶融状態のＰＥＴ４
を先づパリソン金型内に射出し、これが固化する前
に、に、ガスバリヤー材料をＰＥＴ樹脂内に射出する必
要があるので、ＰＥＴの流動開始温度に比してに、ガス
バリヤー材料の分解温度が低い時には、に、ガスバリヤ
ー材料の分解による性能劣化や分解ガスの発生を生じ、
適用できない。Also, when making a parison, molten PET4
It is necessary to first inject into the parison mold and then inject the gas barrier material into the PET resin before it solidifies. When the temperature is low, the gas barrier material decomposes, resulting in performance deterioration and the generation of decomposed gas.
Not applicable.
（ハ）の方法では、ボトルが成形済であるので。In method (c), the bottle is already formed.
装着も容易でありに、ガスバリヤー材料の分解の恐れも
ないが、通常、に、ガスバリヤー材料の炭酸ガス等の透
過性は、ＰＥＴの約１／１Ｇあるいはそれ以下であり、
ＰＥＴボトルの壁厚の１／ｌｏ程度でも、ボトルのガス
透過性を局程度に押えることができる。Although it is easy to install and there is no fear of decomposition of the gas barrier material, the permeability of gas barrier materials to carbon dioxide gas is usually about 1/1 G or less than that of PET.
Even if it is about 1/lo of the wall thickness of a PET bottle, the gas permeability of the bottle can be suppressed to a local level.
またに、ガスバリヤー材料はＰＥＴ樹脂に比較して高価
であり、大量使用は実用的でない。Furthermore, gas barrier materials are more expensive than PET resins, and their use in large quantities is impractical.
したがって、に、ガスバリヤー材料の膜厚を薄くする必
要があるが、膜厚が薄いとその取扱いも面倒であり、し
かも製膜コストも重量の割には安くならない、また、フ
ィルムの熱収縮には限度があり、ボトルの太い部分或は
細い部分まで完全に密着することは困難である。Therefore, it is necessary to reduce the film thickness of the gas barrier material, but if the film is thin, it is difficult to handle, and the film production cost is not low compared to the weight. It is difficult to completely adhere to the thick or thin parts of the bottle.
（発明の目的）
本発明は、充分なに、ガスバリヤー性を有するＰＥＴボ
トルを製造することを目的とする。(Object of the Invention) The object of the present invention is to manufacture a PET bottle having sufficient gas barrier properties.
゛ （発明の構成）
□
本発明は、ＰＥＴ樹脂製のプリフォームに、ガ゛′
スバリャー性フィルムからなるチューブを装着
し、９、・−
１□ た後、２軸延伸ブロー成形することを特
徴とす′：ン
１１、 る。(Structure of the invention) □ The present invention provides a preform made of PET resin.
It is characterized by attaching a tube made of a film with sparring properties, and then biaxially stretching and blow-molding it.
λ
、〕
′９ ．１カ８．）
１．′
ＰＥＴ樹脂製のプリフォームは、前もって成形”・・“
５）・較。λ,]'9. 1 Ka8. ) 1. ' PET resin preforms are pre-molded.
5)・Comparison.
Ｗ゛
＼−−Ｌ″］
１．・１、 貯蔵しておいたものを装着前に取
出して使用する５． ことが出来る。使用する
チューブは、アクリルニゝ、
パトリル等のに、ガスバリヤー性材料フィルムの単一層
て一１−
＼築
からなるものでも、或は他の材料フィルムと積層、゛
゛ したものでも良い、プリフォームと、チュ
ーブの１、゛
゛ 装着に際しては、接着性を向上させるため
に、接□ 着剤を使用したり、或は、に、ガス
バリヤー材料が直５、ｊ。W゛\--L''] 1. 1. It is possible to take out the stored material and use it before installation.The tube used should be made of gas barrier material such as acrylic vinyl or Patril. The preform, which may consist of a single layer of film or laminated with other material films, is used to improve adhesion when attaching the preform to the tube. , □ Using an adhesive or directly attaching the gas barrier material.
接外面に露出するのを避けるため、ＰＥＴを積層するこ
ともできる。PET can also be laminated to avoid exposure to the outer surface.
チューブを装着したＰＥＴプリフォームは、ＰＥＴの延
伸に好適な８０〜１２０℃の温度に加熱し、２軸延伸ブ
ローしてボトルを製造する。又は、別法としてＰＥＴプ
リフォームを成形後、延伸温度付近まで冷却した後、連
続してチューブを装着し、２軸延伸ブローしてボトルを
製造することも出来る。いずれにしてもチューブはプリ
フォームが延伸温度又はそれ以下の時に装着するもので
ある。The PET preform equipped with the tube is heated to a temperature of 80 to 120° C., which is suitable for stretching PET, and biaxially stretched and blown to produce a bottle. Alternatively, after molding the PET preform, it may be cooled to near the stretching temperature, and then a tube may be continuously attached thereto and the bottle may be biaxially stretched and blown to produce a bottle. In any case, the tube is attached when the preform is at or below the drawing temperature.
通常、ＰＥＴボトルの性能を充分に発揮させるためには
面積で１０倍程度に延伸するので、装着するフィルムは
面積で約１／１０．必要厚さの１０倍のもので良く、ボ
トル成形後゛にに、ガスバリヤー処理を実施する公知の
方法に比較して、取扱いも容易で、しかも極めて経済的
である。特に、多層構造のフィルムからなるチューブを
使用する場合には、そのメリットは大きい。Normally, in order to fully demonstrate the performance of a PET bottle, it is stretched to about 10 times the area, so the attached film is about 1/10 the area. It can be 10 times as thick as required, and is easier to handle and extremely economical than the known method of performing gas barrier treatment after bottle molding. This is especially advantageous when using a tube made of a multilayered film.
次に、実施例によって、本発明を具体的に説明する。Next, the present invention will be specifically explained with reference to Examples.
（実施例）
通常の方法で前もって成形した、重量５４ｇ、長さ１３
４履ｌ、直径２７腸腸のＰＥＴ樹脂プリフォームに、厚
さ０．５ｍ■、直径３０ｍｍ、長さ１３０■■、のアク
リルニトリル製（三井東圧製、バレックス２１Ｇ）チュ
ーブを図のように装着した。このチューブ装着ＰＥＴプ
リフォームを、１００℃に加熱後、２軸延伸ブロー成形
してボトルを製造した。(Example) Weight 54g, length 13, preformed in the usual way
An acrylonitrile tube (Mitsui Toatsu, Valex 21G) with a thickness of 0.5 m, a diameter of 30 mm, and a length of 130 mm was placed on a PET resin preform with a diameter of 4 liters and a diameter of 27 mm as shown in the diagram. I installed it. This tube-equipped PET preform was heated to 100° C. and then biaxially stretched and blow molded to produce a bottle.
別に、比較例として、重量５４ｇのＰＥＴのみのプリフ
ォームから２軸延伸成形されたボトルを作り、それぞれ
のガス透過性を測定した。ガス透過性は、４容の炭酸ガ
スを含む炭酸水をボトルに充填し、２２℃、相対湿度８
５％の環境下に保持し、炭酸ガスの損失を測定した。Separately, as a comparative example, bottles were made by biaxial stretching from a PET-only preform weighing 54 g, and the gas permeability of each bottle was measured. Gas permeability was determined by filling a bottle with 4 volumes of carbonated water containing carbon dioxide gas, at 22°C and relative humidity 8.
It was kept in a 5% environment and the loss of carbon dioxide was measured.
結果は、比較例では１３週間で炭酸ガス圧が８５寡に低
下したが、本発明のボトルでは、炭酸ガス圧が８５２に
低下するのに２５週間かかった。The results showed that in the comparative example, the carbon dioxide pressure decreased to a little over 85 in 13 weeks, but in the bottle of the present invention, it took 25 weeks for the carbon dioxide pressure to decrease to 852.
なお、バレックス２１０は分解温度が２３０℃程度であ
るので、公知の共射出成形法でプリフォームを成形する
と、溶融ＰＥＴとの接触時に分解して刺激性ガスを発生
し、機械の腐食を助長するが、本発明の場合は、低温（
１００℃）のため、この現象は全く認められなかった。In addition, Valex 210 has a decomposition temperature of about 230°C, so if a preform is molded using the known co-injection molding method, it will decompose when it comes into contact with molten PET, generating irritating gases and promoting corrosion of the machine. However, in the case of the present invention, low temperature (
(100°C), this phenomenon was not observed at all.
（発明の効果） 本発明の製造方法では、に、ガスバリヤー材料は。(Effect of the invention) In the manufacturing method of the present invention, the gas barrier material is.
既にフィルム状に成形されているので、溶解或は分散状
態にする必要もなく、得られる表面の平滑度が優れてい
る。Since it has already been formed into a film, there is no need to dissolve or disperse it, and the resulting surface has excellent smoothness.
また、ガス透過性材料を含む切屑などの発生も無いので
経済的である。前もって成形した冷却後のプリフォーム
に、に、ガスバリヤー性チューブを装着できるので、に
、ガスバリヤー材料は延伸温度に耐えられれば良く、材
料の選択範囲が広くなる。Furthermore, it is economical since no chips containing gas-permeable materials are generated. Since the gas barrier tube can be attached to the previously formed preform after cooling, the gas barrier material only needs to be able to withstand the stretching temperature, and the range of material selection is widened.
図は、ＰＥＴプリフォームにチューブを装着しえ。。オ
、 （局
Ｉ ＰＥＴプリフォーム
２ に、ガスバリヤーチューブThe figure shows the tube being attached to the PET preform. . (Station I PET preform 2, gas barrier tube
Claims (1)
ームに、ガスバリヤー性フィルムからなるチューブを装
着した後、２軸延伸ブロー成形することを特徴とするガ
スバリヤー性ＰＥＴボトルの製造方法。A method for producing a gas barrier PET bottle, which comprises attaching a tube made of a gas barrier film to a PET preform at a stretching temperature or lower, and then performing biaxial stretch blow molding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60115479A JPS61273927A (en) | 1985-05-30 | 1985-05-30 | Manufacture of pet bottle having gas barrier property |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60115479A JPS61273927A (en) | 1985-05-30 | 1985-05-30 | Manufacture of pet bottle having gas barrier property |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61273927A true JPS61273927A (en) | 1986-12-04 |
Family
ID=14663538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60115479A Pending JPS61273927A (en) | 1985-05-30 | 1985-05-30 | Manufacture of pet bottle having gas barrier property |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61273927A (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02249625A (en) * | 1989-03-24 | 1990-10-05 | Fuji Seal Kogyo Kk | Manufacture of container with label |
| JP2002355886A (en) * | 2001-05-31 | 2002-12-10 | Yoshino Kogyosho Co Ltd | Bottle body made of polyester resin and method for manufacturing the same |
| WO2003064268A1 (en) * | 2002-01-29 | 2003-08-07 | Yoshino Kogyosho Co.,Ltd. | Biaxially oriented blow-molded bottles and preform thereof |
| JP2006240629A (en) * | 2005-02-28 | 2006-09-14 | Yoshino Kogyosho Co Ltd | Synthetic resin container |
| JP2006281630A (en) * | 2005-03-31 | 2006-10-19 | Yoshino Kogyosho Co Ltd | Container made of synthetic resin |
| JP2016124147A (en) * | 2014-12-26 | 2016-07-11 | 大日本印刷株式会社 | Composite container and production method of the same, composite preform, and plastics member |
| JP2016215582A (en) * | 2015-05-25 | 2016-12-22 | 大日本印刷株式会社 | Composite preform |
| JP2017013381A (en) * | 2015-07-01 | 2017-01-19 | 大日本印刷株式会社 | Producing method of complex container, blow molding mold, complex container, complex preform and plastic member |
| JP2017036069A (en) * | 2015-08-10 | 2017-02-16 | 大日本印刷株式会社 | Composite container, composite preform, manufacturing method of composite container, and plastic member |
| JP2018015992A (en) * | 2016-07-28 | 2018-02-01 | 大日本印刷株式会社 | Method for producing composite container |
| JP2019209695A (en) * | 2019-09-18 | 2019-12-12 | 大日本印刷株式会社 | Composite container, production method thereof, composite preform, and plastic member |
| JP2019217783A (en) * | 2019-09-02 | 2019-12-26 | 大日本印刷株式会社 | Composite preform |
| JP2020169060A (en) * | 2020-07-03 | 2020-10-15 | 大日本印刷株式会社 | Composite container, composite preform, manufacturing method of composite container, and plastic member |
| JP2022140644A (en) * | 2019-09-18 | 2022-09-26 | 大日本印刷株式会社 | Composite container, production method thereof, composite preform, and plastic member |
| US11951654B2 (en) | 2017-12-13 | 2024-04-09 | Amcor Rigid Packaging Usa, Llc | Passive barrier layer placement within carbonated beverage container wall to improve shelf-life |
-
1985
- 1985-05-30 JP JP60115479A patent/JPS61273927A/en active Pending
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02249625A (en) * | 1989-03-24 | 1990-10-05 | Fuji Seal Kogyo Kk | Manufacture of container with label |
| JP2002355886A (en) * | 2001-05-31 | 2002-12-10 | Yoshino Kogyosho Co Ltd | Bottle body made of polyester resin and method for manufacturing the same |
| WO2003064268A1 (en) * | 2002-01-29 | 2003-08-07 | Yoshino Kogyosho Co.,Ltd. | Biaxially oriented blow-molded bottles and preform thereof |
| US7976918B2 (en) | 2002-01-29 | 2011-07-12 | Yoshino Kogyosho Co., Ltd. | Biaxially drawn, blow-molded bottle and its preform |
| US8800794B2 (en) | 2002-01-29 | 2014-08-12 | Yoshino Kogyosho Co., Ltd. | Biaxially drawn, blow-molded bottle and its preform |
| JP2006240629A (en) * | 2005-02-28 | 2006-09-14 | Yoshino Kogyosho Co Ltd | Synthetic resin container |
| JP2006281630A (en) * | 2005-03-31 | 2006-10-19 | Yoshino Kogyosho Co Ltd | Container made of synthetic resin |
| JP4636373B2 (en) * | 2005-03-31 | 2011-02-23 | 株式会社吉野工業所 | Plastic container |
| JP2016124147A (en) * | 2014-12-26 | 2016-07-11 | 大日本印刷株式会社 | Composite container and production method of the same, composite preform, and plastics member |
| JP2016215582A (en) * | 2015-05-25 | 2016-12-22 | 大日本印刷株式会社 | Composite preform |
| JP2017013381A (en) * | 2015-07-01 | 2017-01-19 | 大日本印刷株式会社 | Producing method of complex container, blow molding mold, complex container, complex preform and plastic member |
| JP2017036069A (en) * | 2015-08-10 | 2017-02-16 | 大日本印刷株式会社 | Composite container, composite preform, manufacturing method of composite container, and plastic member |
| JP2018015992A (en) * | 2016-07-28 | 2018-02-01 | 大日本印刷株式会社 | Method for producing composite container |
| US11951654B2 (en) | 2017-12-13 | 2024-04-09 | Amcor Rigid Packaging Usa, Llc | Passive barrier layer placement within carbonated beverage container wall to improve shelf-life |
| JP2019217783A (en) * | 2019-09-02 | 2019-12-26 | 大日本印刷株式会社 | Composite preform |
| JP2019209695A (en) * | 2019-09-18 | 2019-12-12 | 大日本印刷株式会社 | Composite container, production method thereof, composite preform, and plastic member |
| JP2021107161A (en) * | 2019-09-18 | 2021-07-29 | 大日本印刷株式会社 | Composite container, production method thereof, composite preform, and plastic member |
| JP2022140644A (en) * | 2019-09-18 | 2022-09-26 | 大日本印刷株式会社 | Composite container, production method thereof, composite preform, and plastic member |
| JP2020169060A (en) * | 2020-07-03 | 2020-10-15 | 大日本印刷株式会社 | Composite container, composite preform, manufacturing method of composite container, and plastic member |
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