JPH0387235A - Hollow molding - Google Patents
Hollow moldingInfo
- Publication number
- JPH0387235A JPH0387235A JP1225761A JP22576189A JPH0387235A JP H0387235 A JPH0387235 A JP H0387235A JP 1225761 A JP1225761 A JP 1225761A JP 22576189 A JP22576189 A JP 22576189A JP H0387235 A JPH0387235 A JP H0387235A
- Authority
- JP
- Japan
- Prior art keywords
- mol
- polyester resin
- spout
- excluding
- weight
- 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
- 238000000465 moulding Methods 0.000 title abstract 3
- 229920000139 polyethylene terephthalate Polymers 0.000 claims abstract description 17
- 239000005020 polyethylene terephthalate Substances 0.000 claims abstract description 17
- 229920005989 resin Polymers 0.000 claims abstract description 14
- 239000011347 resin Substances 0.000 claims abstract description 14
- 229920001225 polyester resin Polymers 0.000 claims abstract description 12
- 239000004645 polyester resin Substances 0.000 claims abstract description 12
- -1 polyethylene terephthalate Polymers 0.000 claims abstract description 10
- 239000000203 mixture Substances 0.000 claims abstract description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract 9
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 claims abstract 6
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 claims abstract 6
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims abstract 4
- 150000001875 compounds Chemical class 0.000 claims abstract 3
- DKXZJPGXPOAXQV-UHFFFAOYSA-N 2-(2,2-dihydroxyethoxy)benzene-1,3-diol Chemical compound OC(O)COC1=C(O)C=CC=C1O DKXZJPGXPOAXQV-UHFFFAOYSA-N 0.000 claims abstract 2
- 239000000470 constituent Substances 0.000 claims 3
- JWTDCPGVNRBTKT-UHFFFAOYSA-N 2-[2-(2-hydroxyethoxy)phenoxy]ethanol Chemical compound OCCOC1=CC=CC=C1OCCO JWTDCPGVNRBTKT-UHFFFAOYSA-N 0.000 claims 1
- IAXFZZHBFXRZMT-UHFFFAOYSA-N 2-[3-(2-hydroxyethoxy)phenoxy]ethanol Chemical compound OCCOC1=CC=CC(OCCO)=C1 IAXFZZHBFXRZMT-UHFFFAOYSA-N 0.000 claims 1
- 230000004888 barrier function Effects 0.000 abstract description 8
- 239000011342 resin composition Substances 0.000 abstract description 5
- 229920001577 copolymer Polymers 0.000 abstract 3
- 150000001732 carboxylic acid derivatives Chemical class 0.000 abstract 1
- 150000002440 hydroxy compounds Chemical class 0.000 abstract 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 abstract 1
- 235000014171 carbonated beverage Nutrition 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000004278 EU approved seasoning Substances 0.000 description 2
- 235000013405 beer Nutrition 0.000 description 2
- 239000002537 cosmetic Substances 0.000 description 2
- 239000003599 detergent Substances 0.000 description 2
- 235000011194 food seasoning agent Nutrition 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
発明の技術分野
本発明は、ガスバリア性、透明性、機械的強度などの特
性に優れた中空成形体に関する。DETAILED DESCRIPTION OF THE INVENTION Technical Field of the Invention The present invention relates to a hollow molded article having excellent properties such as gas barrier properties, transparency, and mechanical strength.
発明の技術的背景
従来から、ガスバリア性を有するポリエステル樹脂組成
物としては、いわゆるＰＥＴ （ポリエチレンテレフタ
レート）樹脂が知られている。Technical Background of the Invention So-called PET (polyethylene terephthalate) resin has been known as a polyester resin composition having gas barrier properties.
ＰＥＴ樹脂は一般に機械的強度および透明性に優れ、か
つ溶融成形性、延伸性といった成形加工性も良好であり
、さらに軽量でもある。そのため、ＰＥＴ樹脂製成形体
は、たとえば炭酸飲料用あるいはビールなどのスパーク
リング飲料用の容器、または調味料、洗剤、化粧品用の
容器などとして広く利用されている。PET resin generally has excellent mechanical strength and transparency, and also has good moldability such as melt moldability and stretchability, and is also lightweight. Therefore, PET resin molded bodies are widely used, for example, as containers for carbonated drinks or sparkling drinks such as beer, or containers for seasonings, detergents, and cosmetics.
ところで、調味料、洗剤あるいは化粧品などの容器にお
いては、機械的強度および透明性などが問題になること
はあっても、ガスｌくリア性については問題になること
は少ない。 ｔしかしながら、たとえば炭酸飲料
あるいはビールなどのスパークリング飲料の容器では、
内部に高圧の炭酸ガスなどが充填されるため、この内部
充填ガスの漏出を防止するのに非常に高いガスノくリア
性を有していることが必要になる。そして、このような
厳しいガスバリア性の要求される用途において、ポリエ
チレンテレフタレート樹脂を使用するには、容器の肉厚
を厚くするなどの方法によりガスバリア性を確保しなけ
ればならず、コスト的に不利である。By the way, in containers for seasonings, detergents, cosmetics, etc., although mechanical strength and transparency may be a problem, gas resistance is rarely a problem. However, in containers for sparkling drinks such as carbonated drinks or beer,
Since the interior is filled with high-pressure carbon dioxide gas, etc., it is necessary to have extremely high gas leakage properties to prevent the internally filled gas from leaking. To use polyethylene terephthalate resin in applications that require such strict gas barrier properties, it is necessary to ensure gas barrier properties by increasing the wall thickness of the container, which is disadvantageous in terms of cost. be.
現在、ポリエステル樹脂製容器の需要は年々増大してい
る。そこで、上記のような用途においてもポリエステル
樹脂製容器を使用するためには、現在使用されているポ
リエチレンテレフタレート樹脂の優れた特性を損なうこ
となく、ポリエチレンテレフタレート樹脂に高いガスバ
リア性を付与する必要がある。Currently, the demand for polyester resin containers is increasing year by year. Therefore, in order to use polyester resin containers in the above applications, it is necessary to impart high gas barrier properties to polyethylene terephthalate resin without impairing the excellent properties of the polyethylene terephthalate resin currently used. .
このような要請下に、ポリエチレンテレフタレート樹脂
に種々の改良を施したポリエチレンテレフタレート樹脂
組成物が提案されている。In response to such demands, polyethylene terephthalate resin compositions have been proposed in which various improvements have been made to polyethylene terephthalate resins.
たとえば、本願出願人が先に出願した特願昭６２−２０
５７３９号明細書には、炭酸飲料などの保存および搬送
に耐え得るガスバリア性を備えたＰＥＴ樹脂組成物とし
て、ＰＥＴ樹脂にポリヒドロキシポリエーテル樹脂を配
合した樹脂組成物が提案されている。上記の明細書に記
載されたＰＥＴ樹脂組成物から成形された容器は、従来
のＰＥＴ樹脂製容器と比較してガスバリア性に優れてい
る。For example, the patent application filed earlier by the applicant in 1986-20
No. 5739 proposes a resin composition in which a polyhydroxypolyether resin is blended with a PET resin as a PET resin composition with gas barrier properties that can withstand storage and transportation of carbonated drinks and the like. A container molded from the PET resin composition described in the above specification has excellent gas barrier properties compared to conventional PET resin containers.
Claims (1)
て９９重量％以下と、共重合ポリエステル樹脂１重量％
以上５重量％未満とからなり、該共重合ポリエステル樹
脂は、２０〜１００モル％のイソフタル酸成分単位およ
び０〜８０モル％のテレフタル酸成分単位からなるジカ
ルボン酸構成単位と、５〜９０モル％のジヒドロキシエ
トキシレゾルシノール成分単位および１０〜９５モル％
のエチレングリコール成分単位からなるジヒドロキシ化
合物構成単位と、ジカルボン酸構成単位１００モル部に
対して少なくとも３つのヒドロキシ基を有する多官能ヒ
ドロキシ化合物構成単位０．０５〜１．０モル部とを含
むポリエステル樹脂組成物からなり、 下記のようにして定義される延伸指数が１３０ｃｍ以上
に高延伸されていることを特徴とする中空成形体。 延伸指数＝延伸ボトルの内容積（口栓部を除く）／未延
伸プリフオームの内容積（口栓部を除く）×１／ｆｆ＝
延伸ボトルの内表面積（口栓部内表面を除く）／延伸ボ
トルの内容積（口栓部容積を除く）（ｃｍ＾−＾１）２
）ポリエチレンテレフタレート樹脂９５重量％を超えて
９９重量％以下と、共重合ポリエステル樹脂１重量％以
上５重量％未満とからなり、該共重合ポリエステル樹脂
は、２０〜１００モル％のイソフタル酸成分単位および
０〜８０モル％のテレフタル酸成分単位からなるジカル
ボン酸構成単位と、５〜９０モル％の１，３−ビス（２
−ヒドロキシエトキシ）ベンゼン成分単位または１，４
−ビス（ヒドロキシエトキシ）ベンゼン成分単位および
１０〜９５モル％のエチレングリコール成分単位からな
るジヒドロキシ化合物構成単位とを含むポリエステル樹
脂組成物からなり、 下記のようにして定義される延伸指数が１３０ｃｍ以上
に高延伸されていることを特徴とする中空成形体。 延伸指数＝延伸ボトルの内容積（口栓部を除く）／未延
伸プリフオームの内容積（口栓部を除く）×１／ｆｆ＝
延伸ボトルの内表面積（口栓部内表面を除く）／延伸ボ
トルの内容積（口栓部容積を除く）（ｃｍ＾−＾１）[Scope of Claims] 1) More than 95% by weight but not more than 99% by weight of polyethylene terephthalate resin and 1% by weight of copolymerized polyester resin
The copolymerized polyester resin contains dicarboxylic acid constituent units consisting of 20 to 100 mol% of isophthalic acid component units and 0 to 80 mol% of terephthalic acid component units, and 5 to 90 mol% of dicarboxylic acid constituent units. dihydroxyethoxyresorcinol component units and 10 to 95 mol%
A polyester resin comprising a dihydroxy compound structural unit consisting of an ethylene glycol component unit of A hollow molded article made of a composition, characterized in that it has been highly stretched to a stretching index of 130 cm or more as defined below. Stretching index = Inner volume of stretched bottle (excluding the spout)/Inner volume of unstretched preform (excluding the spout) x 1/ff=
Inner surface area of stretched bottle (excluding the inner surface of the spout)/Inner volume of the stretched bottle (excluding the volume of the spout) (cm^-^1) 2
) A polyethylene terephthalate resin of more than 95% by weight and 99% by weight or less, and a copolymerized polyester resin of 1% by weight or more and less than 5% by weight, and the copolymerized polyester resin contains 20 to 100 mol% of isophthalic acid component units and Dicarboxylic acid constituent units consisting of 0 to 80 mol% of terephthalic acid component units and 5 to 90 mol% of 1,3-bis(2
-hydroxyethoxy)benzene component unit or 1,4
- A polyester resin composition containing a bis(hydroxyethoxy)benzene component unit and a dihydroxy compound component unit consisting of 10 to 95 mol% of ethylene glycol component units, and has a stretch index of 130 cm or more as defined below. A hollow molded body characterized by being highly stretched. Stretching index = Inner volume of stretched bottle (excluding spout)/Inner volume of unstretched preform (excluding spout) x 1/ff=
Inner surface area of stretched bottle (excluding the inner surface of the spout)/Inner volume of the stretched bottle (excluding the volume of the spout) (cm^-^1)
Priority Applications (10)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22576189A JP2741919B2 (en) | 1989-08-31 | 1989-08-31 | Hollow molded body |
| AT90309422T ATE147321T1 (en) | 1989-08-31 | 1990-08-29 | METHOD FOR PRODUCING BLOW MOLDED ARTICLES |
| DE69029623T DE69029623T2 (en) | 1989-08-31 | 1990-08-29 | Process for the production of blow molded articles |
| EP90309422A EP0415728B1 (en) | 1989-08-31 | 1990-08-29 | Process for preparing blow molded articles |
| CA002024330A CA2024330C (en) | 1989-08-31 | 1990-08-30 | Blow molded articles |
| KR1019900013614A KR940006645B1 (en) | 1989-08-31 | 1990-08-31 | Blow molding articles |
| US08/301,440 US5641548A (en) | 1989-08-19 | 1994-09-09 | Blow molded articles |
| US08/440,972 US5571584A (en) | 1989-08-31 | 1995-05-15 | Blow molded articles |
| US08/440,995 US5556675A (en) | 1989-08-31 | 1995-05-15 | Blow molded articles |
| HK97101575A HK1000063A1 (en) | 1989-08-31 | 1997-07-18 | Process for preparing blow molded articles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22576189A JP2741919B2 (en) | 1989-08-31 | 1989-08-31 | Hollow molded body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0387235A true JPH0387235A (en) | 1991-04-12 |
| JP2741919B2 JP2741919B2 (en) | 1998-04-22 |
Family
ID=16834403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22576189A Expired - Fee Related JP2741919B2 (en) | 1989-08-19 | 1989-08-31 | Hollow molded body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2741919B2 (en) |
-
1989
- 1989-08-31 JP JP22576189A patent/JP2741919B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2741919B2 (en) | 1998-04-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |