JPS62181336A - Molded article of polyethylene terephthalate resin - Google Patents
Molded article of polyethylene terephthalate resinInfo
- Publication number
- JPS62181336A JPS62181336A JP2448386A JP2448386A JPS62181336A JP S62181336 A JPS62181336 A JP S62181336A JP 2448386 A JP2448386 A JP 2448386A JP 2448386 A JP2448386 A JP 2448386A JP S62181336 A JPS62181336 A JP S62181336A
- Authority
- JP
- Japan
- Prior art keywords
- content
- pet
- polyamide resin
- mixed
- polyethylene terephthalate
- 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
- 229920000139 polyethylene terephthalate Polymers 0.000 title claims abstract description 65
- 239000005020 polyethylene terephthalate Substances 0.000 title claims abstract description 65
- 239000011347 resin Substances 0.000 title claims abstract description 24
- 229920005989 resin Polymers 0.000 title claims abstract description 24
- -1 polyethylene terephthalate Polymers 0.000 title claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 64
- 229920006122 polyamide resin Polymers 0.000 claims abstract description 32
- IKHGUXGNUITLKF-UHFFFAOYSA-N Acetaldehyde Chemical compound CC=O IKHGUXGNUITLKF-UHFFFAOYSA-N 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 6
- 229920002292 Nylon 6 Polymers 0.000 abstract description 3
- 229920002302 Nylon 6,6 Polymers 0.000 abstract description 3
- 239000000796 flavoring agent Substances 0.000 abstract 1
- 235000019634 flavors Nutrition 0.000 abstract 1
- 230000005012 migration Effects 0.000 abstract 1
- 238000013508 migration Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 239000000047 product Substances 0.000 description 25
- 238000000465 moulding Methods 0.000 description 9
- 230000007423 decrease Effects 0.000 description 6
- 238000001746 injection moulding Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 238000000071 blow moulding Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000012768 molten material Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229920013683 Celanese Polymers 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 238000004898 kneading Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000004445 quantitative analysis Methods 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、ポリエチレンテレフタレート樹脂製成形品に
関するもので、さらに詳言すれば、このポリエチレンテ
レフタレート樹脂製成形品を容器として使用した際にお
いて収納される内容物の味および香等に悪影習を与えな
いようにするものである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a molded product made of polyethylene terephthalate resin, and more specifically, the present invention relates to a molded product made of polyethylene terephthalate resin. This prevents any negative effects on the taste, aroma, etc. of the contents.
ポリエチレンテレフタレート樹脂（以下、単にＰＥＴと
記す）材料は、その優れた物性および特性により、特に
２軸延伸ブロー成形により増体に成形されて各種の内容
物の収納容器として利用されている。Due to its excellent physical properties and characteristics, polyethylene terephthalate resin (hereinafter simply referred to as PET) material is used as containers for storing various contents, particularly when it is formed into an enlarged body by biaxial stretch blow molding.
このＰＥＴ材料の優れた特性としては、透明度が高いこ
と、耐久性が高いこと、耐内容物性が高いこと、さらに
は表面の硬度が充分に高いこと等が挙げられる。The excellent properties of this PET material include high transparency, high durability, high content resistance, and sufficiently high surface hardness.
このようにＰＥＴ材料は各種の優れた特性を有するもの
なのであるが、このＰＥＴ材料は、その構造に起因して
熱分解をするとアセトアルデヒド（以下、単にＡＡと記
す）を副生じて、このＡＡを収納した内容液中に熔出し
、この内容液の味とか香に影響を与えることがある。As described above, PET material has various excellent properties, but due to its structure, when thermally decomposed, acetaldehyde (hereinafter simply referred to as AA) is produced as a by-product. It may melt into the stored liquid and affect the taste and aroma of this liquid.
ＰＥＴ製成形品においてＡＡが発生増加するのは、射出
成形の時期の樹脂材料が溶融している状態の時であって
、その後の２軸延伸ブロー成形時における再加熱時には
、その温度の関係によりほとんどＡＡの発生はない。The occurrence of AA increases in PET molded products when the resin material is in a molten state during injection molding, and when reheated during subsequent biaxial stretch blow molding, due to the temperature relationship. There is almost no occurrence of AA.
現在２食品容器に用いられるＰＥＴ製容器で５特にＡＡ
のｉｔに対して敏感なものに対しては。2 Currently, PET containers used for food containers are 5, especially AA.
For those who are sensitive to it.
容器の製造を行う場合に、特にＡＡ含有量の低いＰＵＴ
材料を原料として使用し、射出成形時にできる限りＡＡ
の発生を低く抑えるように、加３゛へ温度、／８融状態
における滞留等に注、さして成形条件を設定している。PUT with especially low AA content when manufacturing containers
The material is used as raw material and AA as much as possible during injection molding.
In order to suppress the occurrence of the melting process, the molding conditions are set such as increasing the temperature to 3° and staying in the molten state.
このため、ＡＡ含有量を問題とする場合には。Therefore, when the AA content is an issue.
ＰＥＴ材料の射出成形の成形条件は従来の一般的な樹脂
材料（ＰＥ、ＰＰ等）の射出成形に比較して、非常に成
形条件の制限された難しいものとなっていた。The molding conditions for injection molding of PET materials are extremely limited and difficult compared to injection molding of conventional general resin materials (PE, PP, etc.).
また、上記したようにＰＥＴ材料の成形条件を設定する
ことによるＡＡの発生量を低く抑える手段は、ＰＥＴ材
料の成形性との兼ね合いから当然限界があると共に、Ｐ
ＥＴ材料の広範囲な食品容器への需要増を考えると、現
状のＡＡ発生抑制程度では決して満足できるものではな
いことが明らかで、より高いＡＡ全発生抑制向上が強い
要望として出ている。In addition, as mentioned above, the means to suppress the amount of AA generated by setting the molding conditions of PET material naturally has its limits due to the balance with the moldability of PET material.
Considering the increasing demand for ET materials for a wide range of food containers, it is clear that the current level of AA generation suppression is by no means satisfactory, and there is a strong demand for higher AA generation suppression.
本発明は、上記した従来例における問題点および欠点を
解消すると共に、従来からの強い要望を満たすべ（創案
されたもので、ＡＡ含有量の極めて少ない、すなわち内
容物に対するＡＡの溶出が極めて少なｃ’ｌＰＥＴａ成
形品を提供することを目的としたものである。The present invention solves the problems and drawbacks of the conventional examples described above, and also satisfies the strong demands of the past. The purpose is to provide c'lPETa molded products.
〔問題点を解決するだめの手段および作用〕本発明によ
るＰＥＴ製成形品は、３０重量％以下のポリアミド樹脂
材料を混入したＰＥＴ材料によ゛り成形されたものであ
る。[Means and effects for solving the problems] The PET molded article according to the present invention is molded from a PET material mixed with 30% by weight or less of a polyamide resin material.
ＰＥＴ材料中に混入されるポリアミド樹脂材料としては
、キシリデン基含有ポリアミド樹脂（以下、単に３Ｍ樹
脂と記す）、ナイロン６さらにはナイロン６．６等が含
まれる。The polyamide resin material mixed into the PET material includes xylidene group-containing polyamide resin (hereinafter simply referred to as 3M resin), nylon 6, and nylon 6.6.
成形品中のＡＡ含有量と、ＰＥＴ材料に対するポリアミ
ド樹脂材料の混入比率との関係は、主要材料であるＰＥ
Ｔ材料に対するポリアミド樹脂材料の混入比率を高める
ほど、成形品中のＡＡ含有量が低下するものとなる。The relationship between the AA content in a molded product and the mixing ratio of polyamide resin material to PET material is
The higher the mixing ratio of the polyamide resin material to the T material, the lower the AA content in the molded product.
しかしながら、ＰＥＴ材料中へのポリアミド樹脂の混入
量が３０重量％を越えてしまうと、成形品に現出される
特性としてポリアミド樹脂の特性が強く現れることにな
り、ＰＥＴ材料の優れた特性がほとんど現出しなくなる
ので、ＰＥＴ材料中へのポリアミド樹脂の混入量は３０
重量％以下としなければならない。However, if the amount of polyamide resin mixed into the PET material exceeds 30% by weight, the properties of the polyamide resin will appear strongly in the molded product, and the excellent properties of the PET material will almost disappear. Since it will not appear, the amount of polyamide resin mixed into the PET material is 30%.
Must be less than % by weight.
また、ＰＥＴ材料中に混入されるポリアミド樹脂の量は
、要求されるＡＡ含有量の減少程度に従って設定される
のは当然のことであるが、現在のことろＰＥＴ製成形品
に要求されている最も厳しいＡＡ含有量が６〜７ ｐｐ
ｍであることから考えると、ＰＥＴ材料中に混入される
ポリアミド樹脂量の最小量としては、ＰＥＴ製成形品の
ＡＡ含有量を５ ｐｐｍにすることのできる０゜１重量
％を目安にするのが適当である。In addition, it is natural that the amount of polyamide resin mixed into the PET material is set according to the degree of reduction in AA content required, but it is also currently required for PET molded products. The most severe AA content is 6-7 pp
Considering this, the minimum amount of polyamide resin mixed into the PET material should be 0.1% by weight, which can bring the AA content of the PET molded product to 5 ppm. is appropriate.
ＰＥＴ材料中にポリアミド樹脂材料を混入することによ
ってＡＡ含有量が低下する理由は、まだ明確には解明さ
れていないが、ポリアミド樹脂材料以外の種々の材料の
混入実験結果から２発生したＡＡを化学的に変化させる
化学反応によりＡＡ含有量が低下するのではなく１次に
説明するような物理的な理由によるものと思われる。The reason why the AA content decreases when polyamide resin material is mixed into PET material has not yet been clearly elucidated. It seems that the AA content decreases not due to a chemical reaction that causes a change in the AA content, but due to a physical reason as explained in the first section.
すなわち１通常の射出成形では、成形機のバルブ内に射
出準備のために溶融材料をチャージする際に、スクリュ
ーを後退させながら高速で回転させて、溶融材料の均質
化を図っている。That is, in normal injection molding, when charging molten material into the valve of a molding machine in preparation for injection, the screw is rotated at high speed while retracting to homogenize the molten material.
このスクリューの回転により溶融材料にはシェアーがか
かり、材料自身が発熱し、この発熱によってより多くの
ＡＡが発生するのであるが、ポリアミド樹脂材料はＰＥ
Ｔ材料よりも、その融点が低いため、ＰＥＴ材料間にこ
の融点の低いポリアミド樹脂材料が介在して、このポリ
アミド樹脂材料がＰＥＴ材料間の潤滑油的に作用して、
ＰＥＴ材料のシェアーを抑えると共に９発熱量を少な（
してＡＡの発生を少なくすると思われる。The rotation of this screw applies shear to the molten material, which generates heat, and this heat generation generates more AA, but polyamide resin materials are
Since its melting point is lower than that of the T material, this polyamide resin material with a low melting point is interposed between the PET materials, and this polyamide resin material acts as a lubricant between the PET materials.
In addition to suppressing the share of PET materials,9 the amount of heat generated is also reduced (
This is thought to reduce the occurrence of AA.
すなわち、ポリアミド樹脂材料は、ＰＥＴ材料に比べて
、その溶融温度が低いと共に、ＰＥＴ材料成形温度より
も熱分解温度が高いので、ＰＥＴ製成形品のＡＡ含有量
を大幅に低減させることができるのである。In other words, polyamide resin materials have a lower melting temperature than PET materials and a higher thermal decomposition temperature than the PET material molding temperature, so the AA content of PET molded products can be significantly reduced. be.
ただ、後記する実施例力・ら明らかなように、ポリアミ
ド樹脂の一つであるナイロン６−６は、ＰＥＴよりもそ
の溶融温度が高いにもかかわらず。However, as is clear from the examples described below, nylon 6-6, which is one of the polyamide resins, has a higher melting temperature than PET.
ＰＥＴ材料中に混入することによって高いＡＡ含有量減
少効果を発揮しているので、このナイロン６−６は例外
的なものであると考えられる。This nylon 6-6 is considered to be exceptional because it exhibits a high AA content reduction effect when incorporated into PET materials.
次に、各種の条件別に成形した本発明による成形品にお
けるＡ Ａ ’ｂ’！Ａ度の測定結果を１条件別に列記
する。Next, A A 'b'! in molded products according to the present invention molded under various conditions. The measurement results of degree A are listed for each condition.
実施例の１
ＰＥＴ材料に３Ｍ樹脂を３．０重量％混入したものと、
１．７重量％混入したものと、１．０重量％混入したも
のと、そして０．７ｆｆｉ量％混入したちを使用して射
出成形し、この射出成形ンれた試料を粉砕機により粉砕
して粉末状とし、この粉末を窒素ガス気流中に１４０℃
で２０分間加熱して、粉末から揮発したＡＡ全全量ガス
クロマトグラフに導入してＡＡｌｉの定量分析を行う、
いわゆるセラニーズ法によりＡＡａ度の測定を行った。Example 1 PET material mixed with 3.0% by weight of 3M resin,
Injection molding was performed using a sample containing 1.7% by weight, a sample containing 1.0% by weight, and a sample containing 0.7ffi, and the injection molded samples were crushed using a crusher. This powder was heated at 140°C in a nitrogen gas stream.
Heat for 20 minutes and introduce the entire amount of AA volatilized from the powder into a gas chromatograph for quantitative analysis of AAli.
The AAa degree was measured by the so-called Celanese method.
測定の結果、同一条件で成形されたＰＥＴ材料単体の場
合のＡＡａ度が７．２２ｐｐｍであったのに対し、３．
０型車％混入したもののΔＡ濃度は１．０ｐｐｍであり
、１．７重量％ｌ昆大したもののＡＡＪ度は１．６１ｐ
ｐｍであり、１．０ｉｌｉ、Ｑ％混入したものの八人濃
度は２．５８ｐｐｍであり、０．７重口％混入したもの
のＡＡ濃度は２．３８±０．７ ｐｐｍであった。As a result of the measurement, the AAa degree was 7.22 ppm for the PET material alone molded under the same conditions, whereas the AAa degree was 3.
The ΔA concentration of the 0 type car was 1.0 ppm, and the AAJ degree of the 1.7 wt % l was 1.61 p.
The AA concentration was 2.58 ppm when 1.0ili, Q% was mixed, and the AA concentration was 2.38±0.7 ppm when 0.7% was mixed.
この測定結果から、ＰＥＴ材料中に３．０ｍ１％の３Ｍ
樹脂を混入した場合は、成形品中のＡＡ含有量をほぼ１
／１０まで減少させることができ。From this measurement result, it was found that 3.0m1% of 3M in the PET material.
When resin is mixed, the AA content in the molded product is reduced to approximately 1
It can be reduced to /10.
またＰＥＴ材料中にｏ、７ｆｆｉ（ｆｆｉ％とｉ数量の
３Ｍ樹脂を混入しただけで、成形品中のＡＡ含有量をほ
ぼ１／３にすることができることが明らかとなった。It has also become clear that the AA content in the molded product can be reduced to approximately 1/3 by simply mixing o, 7ffi (ffi%) and i amount of 3M resin into the PET material.
実施例の２ Ａ Ａ含有率ｉ ｐｐｍ以下のＰＥＴ材料を用いて。Example 2 A Using PET material with an A content of i ppm or less.
！約８５ｇのプリフォームを射出成形し、このプリフォ
ームを内容積約２βの円筒形状の壜に２軸延伸ブロー成
形して前記したセラニーズ法によりＡＡＩの定量分析を
行ったところ１プリフオームおよび壜共に、試料中に含
まれるＡＡ含有量は９．１ｐｐ鋼であった。! Approximately 85 g of preform was injection molded, and this preform was biaxially stretched blow molded into a cylindrical bottle with an internal volume of approximately 2β, and quantitative analysis of AAI was performed using the Celanese method described above. The AA content contained in the sample was 9.1 pp steel.
これに対して、同じＰＥＴ材料中に３Ｍ樹脂を７．０重
量％混入した材料により、同一条件でプリフォームおよ
び壜を成形して、このプリフォームおよび壜について上
記と同一方法によりＡＡの含有率を求めたところ、いず
れも１．３ｐｐｍであった。On the other hand, a preform and a bottle were molded under the same conditions using the same PET material mixed with 7.0% by weight of 3M resin, and the AA content of the preform and bottle was determined by the same method as above. The results were 1.3 ppm in both cases.
このことから、３Ｍ樹脂を混入しこＰＥＴ材料により増
体を２軸延伸ブロー成形した場合でも。From this, even when biaxial stretch blow molding is performed using a PET material mixed with 3M resin.
ＡＡの含有量を確実に減少させることができることが明
らかとなった。It has become clear that the content of AA can be reliably reduced.
実施例の３
実施例の２に示した成形方法および条件によって、３Ｍ
樹脂を５重量％、７重量％、１０重量％添加混入した材
料により壜を成形した。Example 3 By using the molding method and conditions shown in Example 2, 3M
Bottles were molded from materials containing 5% by weight, 7% by weight, and 10% by weight of resin.
これらの壜は、成形直後に内部に窒素ガスを吹き込んで
空気と置換し、ただちに密栓をして２２℃の常温槽に５
日間保存した後に、この壜を常温槽から取り出して４内
のガスを注射器を用いて一定量取り、このガスをガスク
ロマトグラフに導入し、壜の壁から４内に出てきたＡ
Ａ 濃度を分析によって求めたところ、３Ｍ樹脂を５重
量％混入したものの場合は平均０．９５μｇ／ｌで、Ｓ
ＭＪ晶（脂を７重量％混入したものの場合は平均０．８
２μｇ／Ｉｔで、３Ｍ樹脂を１０重量％混入したものの
場合は平均０．７３μｇ／Ｉｔであった。Immediately after forming these bottles, nitrogen gas is blown into the interior to replace air, the bottle is immediately sealed, and the bottle is placed in a room temperature bath at 22°C for 5 minutes.
After storing the bottle for a day, the bottle was taken out from the room temperature bath, a certain amount of the gas inside 4 was taken with a syringe, and this gas was introduced into a gas chromatograph, and the A that came out from the wall of the bottle into 4 was taken out using a syringe.
A When the concentration was determined by analysis, it was 0.95 μg/l on average in the case of a product containing 5% by weight of 3M resin, and S
MJ crystal (average 0.8 for those containing 7% fat by weight)
In the case of 2 μg/It and 10% by weight of 3M resin mixed therein, the average was 0.73 μg/It.
この実験結果から明らかなように、ＰＥＴ材料中に混入
されるポリアミド樹脂の量が多くなればなるほど、ＡＡ
の含有量が減少する傾向にあることがわかる。As is clear from this experimental result, the larger the amount of polyamide resin mixed into the PET material, the more the AA
It can be seen that the content tends to decrease.
実施例の４ ＰＥＴ材料の分解によるＡＡの発生に関して。Example 4 Concerning the generation of AA due to the decomposition of PET materials.
加える温度１時間、混線状況をなるべく定量的に比較す
るためにプラストグラフと呼ばれる樹脂混練試験装置を
使用し、樹脂温度を２５０“Ｃ２２６０℃、２７０℃、
２８０℃に設定しつつ、一定の時間（１５分間）、定め
たロータ回転数（１００ｒｐｍ ）の条件のもとに混練
を行い、この樹脂を取り出して急冷し、実施例の２に示
した方法に従ってＡＡの含有量を求めた。The resin temperature was increased to 250°C, 2260°C, 270°C, 2260°C, 270°C, and
Kneading was carried out at a temperature of 280°C for a certain period of time (15 minutes) at a specified rotor rotation speed (100 rpm), and the resin was taken out and rapidly cooled, and then mixed according to the method shown in Example 2. The content of AA was determined.
試料は、ＡＡ含有率１ ｐｐｍ以下のＰＥＴ単体。The sample is PET alone with an AA content of 1 ppm or less.
このＰＥＴ祠料に３Ｍ樹脂を３重量％、７重量％そして
１５重量％混入したもの、同じＰＥＴ材料にナイロン６
を３重口％、７重量％そして１５重口％混入したもの、
そして同じＰＥＴ材料にナイじＩン６．６を３重量％、
７重量％そして１５重口％混入したものを使用した
これらの測定結果を第１図の表に示すと共に。This PET abrasive material was mixed with 3M resin at 3%, 7% and 15% by weight, and the same PET material was mixed with nylon 6.
3% by weight, 7% by weight and 15% by weight,
Then, 3% by weight of Niji In 6.6 was added to the same PET material.
The results of these measurements using 7% by weight and 15% by weight are shown in the table of FIG.
その計算結果を第２図の表に示す。The calculation results are shown in the table in FIG.
この第１図および第２図に示した表から明らかなごとく
、混練温度の上昇にもかかわらず、ポリアミド樹脂を混
入したＰＥＴ製成形品のＡＡ含有量が大幅に減少してお
り、その減少率は極めて大きいものであることがわかる
。As is clear from the tables shown in Figures 1 and 2, despite the increase in kneading temperature, the AA content of the PET molded products mixed with polyamide resin decreased significantly, and the rate of decrease It can be seen that it is extremely large.
このように、ＰＥＴ材料中へのポリアミド樹脂の混入量
を増大させることによって、ＰＥＴ製成形品のＡＡ含有
量を減少させることができるのであるが、ＰＥＴ材料中
へのポリアミド樹脂の混入量の増大に従って、混入され
るポリアミド樹脂の特性が成形品の特性として現れ１反
対にＰＥＴの特性が現出し難くなる。In this way, by increasing the amount of polyamide resin mixed into the PET material, the AA content of the PET molded product can be reduced, but the increase in the amount of polyamide resin mixed into the PET material Accordingly, the characteristics of the polyamide resin to be mixed appear as the characteristics of the molded article, and on the contrary, the characteristics of PET become difficult to express.
それゆえ、ＰＥＴ材料中に混入されるポリアミド樹脂の
量は、成形品に要求されるＰＥＴ材料の特性、成形条件
、使用条件そして最後に要求されるＡＡ含有量を考慮し
て設定する必要がある。Therefore, the amount of polyamide resin mixed into the PET material needs to be set taking into account the properties of the PET material required for the molded product, molding conditions, usage conditions, and finally the required AA content. .
例えば、ＰＥＴ材料中に混入されるポリアミド樹脂の量
が３０正量％を越えると、成形品の成形性が低下する傾
向にあると共に、ＰＥＴ材料の持つ透明性等の特性が低
下することになる。For example, if the amount of polyamide resin mixed into the PET material exceeds 30% by weight, the moldability of the molded product tends to decrease, and the properties such as transparency of the PET material decrease. .
実験によると、ＰＥＴ材料中に混入されるポリアミド樹
脂の量が１．０重量％以下であれば、成形品の透明程度
は、ブロー成形された塩化ビニール樹脂！Ｂ増体とほぼ
同じ程度であることがわかったので、成形品の透明性を
大幅に低下させたくない場合は、ＰＥＴ材料中に混入す
るポリアミド樹脂の量は１．０重量％を上限とする必要
があると思われる。According to experiments, if the amount of polyamide resin mixed into the PET material is 1.0% by weight or less, the degree of transparency of the molded product will be lower than that of blow-molded vinyl chloride resin! It was found that the increase in weight is almost the same as B, so if you do not want to significantly reduce the transparency of the molded product, the upper limit of the amount of polyamide resin mixed into the PET material is 1.0% by weight. It seems necessary.
また、近い将来に予想されるＰＥＴ製成形品に対するＡ
Ａ含有量低下の要求程度から考えて、実際にＰＥＴ材料
中に混入されるポリアミド樹脂の量は０．７〜３．０重
量％程度が適当であると思ねれる。In addition, A
Considering the required degree of reduction in A content, it seems appropriate that the amount of polyamide resin actually mixed into the PET material is about 0.7 to 3.0% by weight.
しかしながら、現在、ＰＥＴ製成形品に要求されている
最も厳しいＡＡ含有量の値が６〜７ ｐｐｍであること
から、前記したようにＡＡ含有量を５ｐｐｍにすること
のできるポリアミド樹脂の混入量０．１ｆｆｉ量％であ
っても、現状の要求を充分に満たすことができる。However, since the strictest AA content value currently required for PET molded products is 6 to 7 ppm, as mentioned above, the amount of polyamide resin mixed in can be reduced to 5 ppm. Even if the amount is .1ffi%, the current requirements can be fully met.
以上の説明から明らかなごとく１本発明による成形品は
、ＡＡの含有量を極めて少なくすることができ、このた
め成形品内に収納される内容物の味とか香に悪形！３！
を与えずにすみ、これによって内容物の品質をより良好
に保持すた状態で収納保持することができ、またその成
形も従来通りで良いので、成形操作が面倒となる不都合
もなく、さらにＰＥＴ材料に対するポリアミド樹脂の混
入量を適当に設定することによって成形品の透明度をさ
ほど低下させないですむ等多くの優れた効果を発Ｊｉｌ
ｔするものである。As is clear from the above description, the molded product according to the present invention can have an extremely low AA content, and as a result, the taste and aroma of the contents stored in the molded product are adversely affected. 3!
As a result, the quality of the contents can be stored and retained better, and the molding can be done in the same way as before, so there is no inconvenience that the molding operation is troublesome. By appropriately setting the amount of polyamide resin mixed into the material, many excellent effects can be achieved, such as not reducing the transparency of the molded product too much.
t.
第１図および第２図は１本発明による成形品の各実施例
とＰＥＴ単体とのＡＡ含有量の比較と減少率とを示す実
験結果の表である。
出願人 株式会社 吉 野 工 業 所グに層
手続ネ甫正１（（自発）
昭和６１年０４月！４ 日
姪
昭和６１年特許願第０２４４８３号
２、発明の名称
ポリエチレンテレフタレート樹脂製成形品３、補正をす
る者
事件との関係 特許 出願人
住所 東京都江東区大島３丁目２番６号名称（６９０）
株式会社 吉野工業所
４、代理人
住所 東京都中野区中野二丁目２５番８号〒
で″
６、補正の内容
ｆｌ）上記本願願書に添付の明＆［Ｉ書中、第４頁１０
行く、
「・・・オシリレン基・・・」と補正する。
（２）同第５頁８行に
「ことろ・・・」とあるのは
「ところ・・・」と補正する。
（３）同第５頁１２行に。
「・・・を５ ｐｐｍにする・・・」とあるのは。
「・・・を上記した従来の要求量よりも一割程度下まわ
る・・・」と補正する。
（４）同第７頁
「たれを・・・」とあるは。
「たれのを・・・」と補正する。
（５）同第８頁５行に。
「・・・±０．７・・・」とあるのは、これを削除する
。
（６）同第９頁５行に。
「含有率・・・」とあるは。
「含有量・・・」と補正する。
（７）同第９頁７行に。
「・・・混入しこ・・・」とあるのは。
「・・・混入した・・・」と補正する。
（８）同第１３頁３行から４行にかけて。
「・・・５ ｐｐｍにする・・・」とあるのは。
「・・・上記した従来の要求量よりも一割程度下まわる
・・・」と補正する。
以上FIGS. 1 and 2 are tables of experimental results showing a comparison and reduction rate of AA content between each example of a molded article according to the present invention and PET alone. Applicant: Yoshino Kogyo Co., Ltd. 1 ((spontaneous) April 4, 1985 Patent Application No. 024483 2, Name of invention Polyethylene terephthalate resin molded product 3 , Relationship with the case of the person making the amendment Patent Applicant Address 3-2-6 Oshima, Koto-ku, Tokyo Name (690)
Yoshino Kogyosho Co., Ltd. 4, Agent address: 2-25-8 Nakano, Nakano-ku, Tokyo 〒 6. Contents of amendment fl) Memorandum & [In Book I, page 4, 10 attached to the above application.
Go, correct it as "...osilylene group...". (2) On page 5, line 8, the phrase ``Kotokoro...'' has been corrected to ``Tokoro...''. (3) On page 5, line 12. What it says is "...to 5 ppm...". The correction is made as follows: "...is about 10% lower than the conventional required amount...". (4) On page 7 of the same page, it says ``Sauce...''. "Tare no..." I corrected. (5) On page 8, line 5. Delete "...±0.7...". (6) On page 9, line 5. It says "Content rate...". Correct it with "Content...". (7) On page 9, line 7. What it says is ``...contamination...''. Correct it by saying, “It was mixed in.” (8) From line 3 to line 4 on page 13. What it says is "...make it 5 ppm...". The correction is made as follows: "...it is about 10% lower than the conventional required amount mentioned above..."that's all
Claims (1)
チレンテレフタレート樹脂材料により成形されたポリエ
チレンテレフタレート樹脂製成形品。A polyethylene terephthalate resin molded product molded from a polyethylene terephthalate resin material mixed with 30% by weight or less of a polyamide resin material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2448386A JPS62181336A (en) | 1986-02-06 | 1986-02-06 | Molded article of polyethylene terephthalate resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2448386A JPS62181336A (en) | 1986-02-06 | 1986-02-06 | Molded article of polyethylene terephthalate resin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62181336A true JPS62181336A (en) | 1987-08-08 |
Family
ID=12139432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2448386A Pending JPS62181336A (en) | 1986-02-06 | 1986-02-06 | Molded article of polyethylene terephthalate resin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62181336A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6335647A (en) * | 1986-07-30 | 1988-02-16 | Toyo Seikan Kaisha Ltd | Container made of polyester and having improved flavor retention |
| US5266413A (en) * | 1992-05-18 | 1993-11-30 | Eastman Kodak Company | Copolyester/polyamide blend having improved flavor retaining property and clarity |
| CH684537A5 (en) * | 1992-09-01 | 1994-10-14 | Daniel Ganz | Thermoplastic polymer composition |
| EP1239008A1 (en) * | 2001-03-05 | 2002-09-11 | Mitsubishi Gas Chemical Company, Inc. | Polyester-based resin composition and shaped articles |
| WO2011145383A1 (en) | 2010-05-19 | 2011-11-24 | 三菱瓦斯化学株式会社 | Polyester amide compound |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5890033A (en) * | 1981-11-13 | 1983-05-28 | 株式会社吉野工業所 | Bottle body |
| JPS6250362A (en) * | 1985-08-29 | 1987-03-05 | Mitsubishi Plastics Ind Ltd | Polyester container |
| JPS6250328A (en) * | 1985-08-29 | 1987-03-05 | Mitsubishi Plastics Ind Ltd | Polyester container |
| JPS6264726A (en) * | 1985-09-17 | 1987-03-23 | 株式会社吉野工業所 | Heat-resistant bottle body made of synthetic resin and manufacture thereof |
-
1986
- 1986-02-06 JP JP2448386A patent/JPS62181336A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5890033A (en) * | 1981-11-13 | 1983-05-28 | 株式会社吉野工業所 | Bottle body |
| JPS6250362A (en) * | 1985-08-29 | 1987-03-05 | Mitsubishi Plastics Ind Ltd | Polyester container |
| JPS6250328A (en) * | 1985-08-29 | 1987-03-05 | Mitsubishi Plastics Ind Ltd | Polyester container |
| JPS6264726A (en) * | 1985-09-17 | 1987-03-23 | 株式会社吉野工業所 | Heat-resistant bottle body made of synthetic resin and manufacture thereof |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6335647A (en) * | 1986-07-30 | 1988-02-16 | Toyo Seikan Kaisha Ltd | Container made of polyester and having improved flavor retention |
| JPH0471425B2 (en) * | 1986-07-30 | 1992-11-13 | Toyo Seikan Kaisha Ltd | |
| US5266413A (en) * | 1992-05-18 | 1993-11-30 | Eastman Kodak Company | Copolyester/polyamide blend having improved flavor retaining property and clarity |
| CH684537A5 (en) * | 1992-09-01 | 1994-10-14 | Daniel Ganz | Thermoplastic polymer composition |
| EP1239008A1 (en) * | 2001-03-05 | 2002-09-11 | Mitsubishi Gas Chemical Company, Inc. | Polyester-based resin composition and shaped articles |
| WO2011145383A1 (en) | 2010-05-19 | 2011-11-24 | 三菱瓦斯化学株式会社 | Polyester amide compound |
| US8889821B2 (en) | 2010-05-19 | 2014-11-18 | Mitsubishi Gas Chemical Company, Inc. | Polyester amide compound |
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