JPS6250362A - Polyester container - Google Patents
Polyester containerInfo
- Publication number
- JPS6250362A JPS6250362A JP60190600A JP19060085A JPS6250362A JP S6250362 A JPS6250362 A JP S6250362A JP 60190600 A JP60190600 A JP 60190600A JP 19060085 A JP19060085 A JP 19060085A JP S6250362 A JPS6250362 A JP S6250362A
- Authority
- JP
- Japan
- Prior art keywords
- nylon
- resin
- polyester
- container
- aliph
- 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
- Containers Having Bodies Formed In One Piece (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、ポリニスデル容器に関するものである。[Detailed description of the invention] (Industrial application field) The present invention relates to polynisder containers.
（従来技術）
近年、ポリエチレンテレフタレート等のポリエステル樹
脂からなる、２＠延伸ブローボトル等の容器が広く普及
してきた。このポリエステル樹脂は容器に成型する過程
において、極く微量のアセトアルデヒドを発生ずる場合
があり、これが密閉された容器中にこもるとその臭気が
清涼飲料水等の内容物の味、かおりに悪影響を与える恐
れがあった。(Prior Art) In recent years, containers such as 2@stretch blow bottles made of polyester resin such as polyethylene terephthalate have become widely used. During the process of molding this polyester resin into containers, it may generate extremely small amounts of acetaldehyde, and if this remains in a sealed container, its odor will adversely affect the taste and aroma of the contents, such as soft drinks. There was fear.
従来はアセトアルデヒドの発生を防止するために、ポリ
エステル樹脂の重合段階で充分乾燥させたり、酸化、還
元によりアセトアルデヒドを減少させるとともに、樹脂
を溶融して成型す゛る際にもできるだけ低温で溶融する
等の工夫がなされている。（特開昭５２−１１０１７７
号、特開昭５３−２８６９３号参照）
（発明が解決しようとする問題点）
ところが上記方法では、ポリエステル樹脂の重合から容
器の成形まで絶えざる精密な工程管理が必要となり繁雑
となる問題があった。Conventionally, in order to prevent the generation of acetaldehyde, methods such as sufficiently drying the polyester resin during the polymerization stage, reducing acetaldehyde through oxidation and reduction, and melting the resin at the lowest possible temperature when molding were used. is being done. (Unexamined Japanese Patent Publication No. 52-110177
(See JP-A No. 53-28693) (Problems to be Solved by the Invention) However, the above method has the problem of becoming complicated as it requires continuous precise process control from polymerization of the polyester resin to molding of the container. Ta.
（問題点を解決するための手段）
本発明は、上記問題点に鑑み、容器を成型する段階で、
ポリエステル樹脂に他の樹脂を添加するという手段によ
りアセトアルデヒド成分の発生を減少せんとするもので
あり、その要旨は主たる繰り返し単位がエチレンテレフ
タレートであるポリエステル樹脂に対し、脂肪族系のナ
イロン樹脂を１種又は２種以上添加した樹脂組成物から
なるポリエステル容器である。以下本発明の詳細な説明
する。なお以下の説明で、比率を示す「部」は１ｆｍ部
」をあられず。(Means for Solving the Problems) In view of the above-mentioned problems, the present invention provides, in the step of molding a container,
The aim is to reduce the generation of acetaldehyde components by adding other resins to polyester resin, and the gist of this is to add one type of aliphatic nylon resin to polyester resin whose main repeating unit is ethylene terephthalate. Alternatively, it is a polyester container made of a resin composition containing two or more types. The present invention will be explained in detail below. In the following explanation, "part" indicating a ratio does not mean "1fm part".
ここで用いる主たる繰り返し単位がエチレンテレフタレ
ートであるポリエステル樹脂（以下単にＰＥＴという）
としては、酸成分の８０′［−ル％以上、好ましくは９
０モル％以上がテレフタル酸、グリコール成分の８０モ
ル％以上、好ましくは９０Ｃニル％以上がエチレングリ
コールである結晶性の樹脂を用いる。このＰ Ｕ Ｔの
他の酸成分としては、イソフタル酸、ナフタリン−１，
４または２．６−ジカルボン酸、アジピン酸、セバシン
酸等が挙げられ、また他のグリコール成分としては、ジ
エチレングリコール、プロピレングリコール、１．４−
ブタンジオールシクロヘキサンジメタノール等が挙げら
れる。このＰＥＴは上記したもののなかから選んで用い
るが固有粘度０．８以上のものが好ましい。Polyester resin whose main repeating unit is ethylene terephthalate (hereinafter simply referred to as PET)
80% or more of the acid component, preferably 9% of the acid component.
A crystalline resin is used in which terephthalic acid accounts for 0 mol% or more and ethylene glycol accounts for 80 mol% or more, preferably 90 Cyl% or more of the glycol component. Other acid components of this PUT include isophthalic acid, naphthalene-1,
4- or 2,6-dicarboxylic acid, adipic acid, sebacic acid, etc., and other glycol components include diethylene glycol, propylene glycol, 1,4-
Examples include butanediol, cyclohexanedimethanol, and the like. This PET is selected from those listed above and is preferably used, but one with an intrinsic viscosity of 0.8 or more is preferred.
本発明に、１３いて脂肪族系のナイロン樹脂（以下単に
ＰＡという）としてはナイロン６、ナイロン６６、ナイ
ロン６１０等の直鎖状の基本分子構造を有する脂肪族系
のナイロンあるいはこれらの共重合体乃至は混合物が用
いられる。これらは汎用プラスチックとして入手し易い
ので好適である。In the present invention, 13, the aliphatic nylon resin (hereinafter simply referred to as PA) is an aliphatic nylon having a linear basic molecular structure such as nylon 6, nylon 66, nylon 610, or a copolymer thereof. Alternatively, a mixture may be used. These are suitable because they are easily available as general-purpose plastics.
本発明においてＰＥＴとＰＡとの混合割合としては、Ｐ
ＥＴ１００部当りＰＡｏ、０５〜１０部が好ましく０，
０５以上、１部未満の範囲がさらに好ましい。In the present invention, the mixing ratio of PET and PA is P
PAo per 100 parts of ET, preferably 05 to 10 parts,
A range of 0.05 parts or more and less than 1 part is more preferable.
ＰＡが０．０５部より少いとアセトアルデヒドの減少効
果が少く、１０部よりも多いとＰＥＴの優れた特性に悪
影響を及ぼし物理的強度、成形加工性などの悪化を伴う
ので０．０５〜１０部が好ましい。また、ＰＡが１部未
満では得られる容器の白濁等が生じ難く着色材などを添
加して外観を整えなくともよく、透明な容器が得られる
のでさらに好ましい。If PA is less than 0.05 part, the effect of reducing acetaldehyde will be small, and if it is more than 10 parts, it will adversely affect the excellent properties of PET and cause deterioration of physical strength, moldability, etc., so 0.05 to 10 parts. is preferred. Further, if the PA content is less than 1 part, the resultant container is less likely to become cloudy, so there is no need to add a coloring agent to improve the appearance, and a transparent container can be obtained, which is more preferable.
ＰＥＴとＰＡとを混合するためには例えば両樹脂をトラ
イブレンドしてからベレット製造用押出機で混練しなが
ら押し出して混合樹脂ベレットを製造することができる
。In order to mix PET and PA, for example, both resins may be triblended and then extruded while being kneaded using an extruder for producing pellets to produce a mixed resin pellet.
また、この混合樹脂から容器を成形するためには、従来
のポリエステル容器の製造方法と異なるところはなく、
例えば射出成形、押出成形により中空の中間素材を作り
これを成形型内で二軸延伸ブロー成形したり、シートー
ヒに押出成形してこのシートを＠突成形、圧空成形して
容器を得る等の方法があるが、二軸延伸ブロー成形方法
により得られるボトルが代表的なものである。In addition, the process for molding containers from this mixed resin is no different from the conventional manufacturing method for polyester containers.
For example, a hollow intermediate material is made by injection molding or extrusion molding, and this is biaxially stretched and blow molded in a mold, or a container is obtained by extrusion molding into a sheet and then projecting or pressure forming the sheet. However, a typical example is a bottle obtained by a biaxial stretch blow molding method.
（発明の効果）
本発明のポリエステル容器は、以上説明したようにポリ
エステル樹脂に脂肪族系のナイロン樹脂を添加した樹脂
組成物からなるので、ポリエステル樹脂の有する優れた
性質を損わずに、アセトアルデヒドの発生量がすくない
という優れた特性を有しておりしかも、通常のポリエス
テル樹脂に入手し易いナイロン樹脂を添加するという極
めて容易な方法により、安定してアセトアルデヒドの発
生が少ない容器を製造し得るものである。(Effects of the Invention) As explained above, the polyester container of the present invention is made of a resin composition in which an aliphatic nylon resin is added to a polyester resin. It has the excellent property of generating only a small amount of acetaldehyde, and it is possible to stably manufacture containers that generate little acetaldehyde by adding easily available nylon resin to ordinary polyester resin. It is.
（実施例）
ＰＥ下として固有粘度［η１０．７６、融点２５５℃、
ガラス転移温度７０ ’Ｃのポリエチレンテレフタレー
トを用い、ＰＡとしてナイロン６ ａ３よびナイロン６
６を用いて第１．２表に示すようにＰＥＴ１００部に対
する割合で混合樹脂ベレットを作りこれらを通常の射出
成形により成形して６０（］のパリソンを作り、通常の
二軸延伸ブロー成形により１．５Ｊｌｌのボトルを製造
し下記方法でアセトアルデヒドの発生量を測定した結果
をナイロン６については第１表に、ナイロン６６につい
ては第２表に示す。(Example) Under PE, intrinsic viscosity [η10.76, melting point 255°C,
Using polyethylene terephthalate with a glass transition temperature of 70'C, nylon 6 a3 and nylon 6 as PA.
6 is used to make a mixed resin pellet at a ratio of 100 parts of PET as shown in Table 1.2, and these are molded by normal injection molding to make a parison of 60 (), and by normal biaxial stretch blow molding to make a parison of 1. A .5 Jll bottle was manufactured and the amount of acetaldehyde generated was measured using the method described below. The results are shown in Table 1 for Nylon 6 and in Table 2 for Nylon 66.
アセトアルデヒド発生量の測定法：
成形した容器の内部を窒素ガスで置換して密栓し、２２
℃の雰囲気中に２４時間放置した後、容器内の気相中の
アセトアルデヒド■をガスクロマトグラフのピーク高さ
により測定する。測定対象容器のアセトアルデヒドのピ
ーク高さをト１とし、ＰＥＴのみからなる容器のアセト
アルデヒドのピーク高さを１１１ どした１ｌｉｉに
（Ｈ＋−Ｈ）／ｌ−ｈ Ｘｌ ００をアセ１ヘアルデヒ
ド減少率（以下、Ａ△減少率）（％）として表わす。Measuring method for the amount of acetaldehyde generated: The inside of the molded container was replaced with nitrogen gas and the container was sealed tightly.
After leaving the container in an atmosphere at .degree. C. for 24 hours, acetaldehyde (2) in the gas phase in the container was measured by the peak height on a gas chromatograph. The peak height of acetaldehyde in the container to be measured is 1, and the peak height of acetaldehyde in the container made only of PET is 111. Hereinafter, it will be expressed as A△reduction rate) (%).
白濁の有無：
明るい場所でボトルを、黒色を費用にして目視し、ＰＥ
Ｔのみのボトルと比較してはっきりと白濁の認められる
ものは右、認められないものは無ど し ノこ 。Presence of cloudiness: Visually inspect the bottle in a bright place with the black color as the color.
The one on the right shows a clear cloudiness compared to the T-only bottle, and the one on the right shows no cloudiness.
第１表
第２表
第１表、第２表に示Ｊ゛ように、ナイロン６が０．１〜
１０部の実施例１〜５は、Ａ△減少率が３０〜１００％
、実施例６〜１０は２５〜１００％といずれも大きく、
一方０．０１部の比較例１゜３はそれぞれ７％、０％と
小さかった。Table 1 Table 2 As shown in Tables 1 and 2, nylon 6 is 0.1~
Examples 1 to 5 of 10 parts had an A△ reduction rate of 30 to 100%.
, Examples 6 to 10 are all large, ranging from 25 to 100%.
On the other hand, Comparative Example 1°3 containing 0.01 part was as small as 7% and 0%, respectively.
ナイロン６またはナイロン６６が１２部の比較例２．４
は白濁が生じ透明性が悪化した。Comparative example 2.4 with 12 parts of nylon 6 or nylon 66
The color became cloudy and the transparency deteriorated.
また、ナイロン６またはナイロン６６が１部以上である
実施例４．５．９．１０はＰＥＴのみのものに比べて少
々白濁が認められた。Further, in Examples 4.5.9.10 in which 1 part or more of nylon 6 or nylon 66 was used, a little cloudiness was observed compared to the case of only PET.
Claims (1)
リエステル樹脂に対し、脂肪族系のナイロン樹脂を１種
又は２種以上添加した樹脂組成物からなるポリエステル
容器。A polyester container made of a resin composition in which one or more aliphatic nylon resins are added to a polyester resin whose main repeating unit is ethylene terephthalate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19060085A JPH0645745B2 (en) | 1985-08-29 | 1985-08-29 | Polyester container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19060085A JPH0645745B2 (en) | 1985-08-29 | 1985-08-29 | Polyester container |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6250362A true JPS6250362A (en) | 1987-03-05 |
| JPH0645745B2 JPH0645745B2 (en) | 1994-06-15 |
Family
ID=16260763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19060085A Expired - Lifetime JPH0645745B2 (en) | 1985-08-29 | 1985-08-29 | Polyester container |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0645745B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62181336A (en) * | 1986-02-06 | 1987-08-08 | Yoshino Kogyosho Co Ltd | Molded article of polyethylene terephthalate resin |
| WO2019030142A1 (en) * | 2017-08-05 | 2019-02-14 | Kocher-Plastik Maschinenbau Gmbh | Method of blow moulding, filling and closing, and container product, especially ampoule product, produced thereby |
-
1985
- 1985-08-29 JP JP19060085A patent/JPH0645745B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62181336A (en) * | 1986-02-06 | 1987-08-08 | Yoshino Kogyosho Co Ltd | Molded article of polyethylene terephthalate resin |
| WO2019030142A1 (en) * | 2017-08-05 | 2019-02-14 | Kocher-Plastik Maschinenbau Gmbh | Method of blow moulding, filling and closing, and container product, especially ampoule product, produced thereby |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0645745B2 (en) | 1994-06-15 |
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