JPH04345831A - Carbonated beverage bottle of saturated polyester - Google Patents
Carbonated beverage bottle of saturated polyesterInfo
- Publication number
- JPH04345831A JPH04345831A JP3118770A JP11877091A JPH04345831A JP H04345831 A JPH04345831 A JP H04345831A JP 3118770 A JP3118770 A JP 3118770A JP 11877091 A JP11877091 A JP 11877091A JP H04345831 A JPH04345831 A JP H04345831A
- Authority
- JP
- Japan
- Prior art keywords
- bottle
- saturated polyester
- carbonated beverage
- beverage bottle
- section
- 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
- 229920000728 polyester Polymers 0.000 title claims abstract description 36
- 229920006395 saturated elastomer Polymers 0.000 title claims abstract description 36
- 235000014171 carbonated beverage Nutrition 0.000 title claims abstract description 20
- -1 dicarboxylic acid compound Chemical class 0.000 claims abstract description 15
- 150000001875 compounds Chemical class 0.000 claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 abstract 1
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 11
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 6
- 238000000465 moulding Methods 0.000 description 5
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 4
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229920000139 polyethylene terephthalate Polymers 0.000 description 3
- 239000005020 polyethylene terephthalate Substances 0.000 description 3
- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- ISPYQTSUDJAMAB-UHFFFAOYSA-N 2-chlorophenol Chemical compound OC1=CC=CC=C1Cl ISPYQTSUDJAMAB-UHFFFAOYSA-N 0.000 description 2
- LLLVZDVNHNWSDS-UHFFFAOYSA-N 4-methylidene-3,5-dioxabicyclo[5.2.2]undeca-1(9),7,10-triene-2,6-dione Chemical compound C1(C2=CC=C(C(=O)OC(=C)O1)C=C2)=O LLLVZDVNHNWSDS-UHFFFAOYSA-N 0.000 description 2
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 2
- 238000007334 copolymerization reaction Methods 0.000 description 2
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 2
- BDJRBEYXGGNYIS-UHFFFAOYSA-N nonanedioic acid Chemical compound OC(=O)CCCCCCCC(O)=O BDJRBEYXGGNYIS-UHFFFAOYSA-N 0.000 description 2
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 2
- YPFDHNVEDLHUCE-UHFFFAOYSA-N propane-1,3-diol Chemical compound OCCCO YPFDHNVEDLHUCE-UHFFFAOYSA-N 0.000 description 2
- SFRDXVJWXWOTEW-UHFFFAOYSA-N 2-(hydroxymethyl)propane-1,3-diol Chemical compound OCC(CO)CO SFRDXVJWXWOTEW-UHFFFAOYSA-N 0.000 description 1
- VPWNQTHUCYMVMZ-UHFFFAOYSA-N 4,4'-sulfonyldiphenol Chemical class C1=CC(O)=CC=C1S(=O)(=O)C1=CC=C(O)C=C1 VPWNQTHUCYMVMZ-UHFFFAOYSA-N 0.000 description 1
- 229930185605 Bisphenol Natural products 0.000 description 1
- UUAGPGQUHZVJBQ-UHFFFAOYSA-N Bisphenol A bis(2-hydroxyethyl)ether Chemical compound C=1C=C(OCCO)C=CC=1C(C)(C)C1=CC=C(OCCO)C=C1 UUAGPGQUHZVJBQ-UHFFFAOYSA-N 0.000 description 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- 101000582320 Homo sapiens Neurogenic differentiation factor 6 Proteins 0.000 description 1
- 102100030589 Neurogenic differentiation factor 6 Human genes 0.000 description 1
- ORLQHILJRHBSAY-UHFFFAOYSA-N [1-(hydroxymethyl)cyclohexyl]methanol Chemical compound OCC1(CO)CCCCC1 ORLQHILJRHBSAY-UHFFFAOYSA-N 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- 125000002723 alicyclic group Chemical group 0.000 description 1
- 125000005907 alkyl ester group Chemical group 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- QYQADNCHXSEGJT-UHFFFAOYSA-N cyclohexane-1,1-dicarboxylate;hydron Chemical compound OC(=O)C1(C(O)=O)CCCCC1 QYQADNCHXSEGJT-UHFFFAOYSA-N 0.000 description 1
- 150000001991 dicarboxylic acids Chemical class 0.000 description 1
- GHLKSLMMWAKNBM-UHFFFAOYSA-N dodecane-1,12-diol Chemical compound OCCCCCCCCCCCCO GHLKSLMMWAKNBM-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 1
- 238000001879 gelation Methods 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- XXMIOPMDWAUFGU-UHFFFAOYSA-N hexane-1,6-diol Chemical compound OCCCCCCO XXMIOPMDWAUFGU-UHFFFAOYSA-N 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 150000002762 monocarboxylic acid derivatives Chemical class 0.000 description 1
- KYTZHLUVELPASH-UHFFFAOYSA-N naphthalene-1,2-dicarboxylic acid Chemical compound C1=CC=CC2=C(C(O)=O)C(C(=O)O)=CC=C21 KYTZHLUVELPASH-UHFFFAOYSA-N 0.000 description 1
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 description 1
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 description 1
- QXJQHYBHAIHNGG-UHFFFAOYSA-N trimethylolethane Chemical compound OCC(C)(CO)CO QXJQHYBHAIHNGG-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
- B65D1/02—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents
- B65D1/0207—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by material, e.g. composition, physical features
Landscapes
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Polyesters Or Polycarbonates (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
Abstract
Description
【０００１】0001
【発明の技術分野】本発明は、飽和ポリエステル製炭酸
飲料用ボトルに関し、さらに詳しくは、耐ストレスクラ
ック性に優れた飽和ポリエステル製炭酸飲料用ボトルに
関する。TECHNICAL FIELD OF THE INVENTION The present invention relates to a saturated polyester carbonated beverage bottle, and more particularly to a saturated polyester carbonated beverage bottle that has excellent stress crack resistance.
【０００２】0002
【発明の技術的背景】近年、ジュース、コーラなどの炭
酸飲料用ボトルの素材として種々のプラスチックが用い
られており、なかでもポリエチレンテレフタレートなど
の飽和ポリエステルは、透明性、ガスバリヤ性、耐熱性
および機械的強度に優れているため、炭酸飲料用容器の
素材として多く採用されている。[Technical Background of the Invention] In recent years, various plastics have been used as materials for bottles for carbonated beverages such as juice and cola, and among them, saturated polyesters such as polyethylene terephthalate have excellent transparency, gas barrier properties, heat resistance, and mechanical properties. Because of its excellent mechanical strength, it is often used as a material for carbonated beverage containers.
【０００３】ところが飽和ポリエステル製炭酸飲料用ボ
トルは、特に夏場において特定の成形条件で製造された
ボトルが破損することがまれにあった。万一市場でボト
ルが破損すると、商品イメージが低下するだけでなく、
危険を伴うこともあるため、ボトルの破損を防止するこ
とは、実用上極めて重要である。[0003] However, carbonated beverage bottles made of saturated polyester have rarely been damaged, especially in summer when the bottles are manufactured under specific molding conditions. In the unlikely event that a bottle is damaged in the market, not only will the product image deteriorate;
Preventing bottle breakage is extremely important in practice, as this can be dangerous.
【０００４】本発明者らは、このような飽和ポリエステ
ル製ボトルの破損の原因について鋭意検討したところ、
ボトルは口栓部下端から１０〜２０ｍｍの上肩部で高さ
方向に破損することが最も多く、また高温、多湿下での
破損が多いことを見出した。そして上記の知見に基いて
さらに検討を重ねたところ、飽和ポリエステルが多官能
性化合物成分を一定量含んでいれば、上肩部の肉厚が特
定の厚さ以下であっても、ボトルの破損をほぼ完全に防
止しうることを見出して本発明を完成するに至った。[0004] The inventors of the present invention conducted extensive research into the causes of damage to such saturated polyester bottles, and found that
It has been found that bottles are most often damaged in the height direction at the upper shoulder, which is 10 to 20 mm from the bottom end of the spout, and that they are often damaged under high temperature and high humidity conditions. Further studies based on the above knowledge revealed that if the saturated polyester contains a certain amount of polyfunctional compound components, even if the wall thickness of the upper shoulder is below a certain thickness, the bottle will break. The present invention has been completed based on the discovery that this can be almost completely prevented.
【０００５】[0005]
【発明の目的】本発明は、上記のような従来技術におけ
る問題点を解決しようとするものであって、炭酸飲料が
充填され、しかも高温多湿条件下に長時間保存された場
合であっても、ボトルに破損が生ずることがないような
飽和ポリエステル製炭酸飲料用ボトルを提供することを
目的としている。OBJECTS OF THE INVENTION The present invention aims to solve the above-mentioned problems in the prior art. An object of the present invention is to provide a carbonated beverage bottle made of saturated polyester that will not cause damage to the bottle.
【０００６】[0006]
【発明の概要】本発明に係る飽和ポリエステル製炭酸飲
料用ボトルは、口栓部、上肩部、胴部、下肩部および底
部からなる飽和ポリエステル製ボトルにおいて、上肩部
（サポートリング下にボトル表面に沿って１５ｍｍ下の
位置）における肉厚が０．３５ｍｍ以下であり、かつ該
ボトルが、ジカルボン酸化合物成分単位を１００モル部
としたときに、多官能性化合物成分単位を０．２〜１．
０モル部含有し、極限粘度［η］が０．６〜１．０ｄｌ
／ｇである飽和ポリエステルからなることを特徴として
いる。SUMMARY OF THE INVENTION The saturated polyester carbonated beverage bottle according to the present invention is a saturated polyester bottle consisting of a spout, an upper shoulder, a trunk, a lower shoulder, and a bottom. The bottle has a wall thickness of 0.35 mm or less at a position 15 mm below the bottle surface, and the bottle has a polyfunctional compound component unit of 0.2 when the dicarboxylic acid compound component unit is 100 mole parts. ~1.
Contains 0 mole part and has a limiting viscosity [η] of 0.6 to 1.0 dl
/g of saturated polyester.
【０００７】[0007]
【発明の具体的説明】以下、本発明に係る飽和ポリエス
テル製炭酸飲料用ボトルについて説明する。本発明に係
るボトルの素材として用いられる飽和ポリエステルとし
ては、テレフタル酸またはそのエステル形成性誘導体（
たとえば低級アルキルエステル、フェニルエステルなど
）と、エチレングリコールまたはそのエステル形成性誘
導体（たとえばモノカルボン酸エステルエチレンオキサ
イドなど）と、多官能性化合物とから得られる飽和ポリ
エステルが好ましく用いられる。DETAILED DESCRIPTION OF THE INVENTION The saturated polyester carbonated beverage bottle according to the present invention will be described below. As the saturated polyester used as the material for the bottle according to the present invention, terephthalic acid or its ester-forming derivative (
For example, a saturated polyester obtained from a polyfunctional compound (eg, lower alkyl ester, phenyl ester, etc.), ethylene glycol or its ester-forming derivative (eg, monocarboxylic acid ester ethylene oxide, etc.), and a polyfunctional compound is preferably used.
【０００８】多官能性化合物としては、トリメチロール
メタン、トリメチロールエタン、トリメチロールプロパ
ン、ペンタエリスリトールなどが挙げられ、トリメチロ
ールプロパンが好ましい。飽和ポリエステル中の多官能
性化合物成分単位の含有量は、飽和ポリエステルを構成
するジカルボン酸化合物成分単位を１００モル部とした
ときに、通常０．２〜１．０モル部、好ましくは０．２
〜０．６モル部、より好ましくは０．２〜０．４モル部
である。多官能性化合物成分単位の含有量が少ないと、
成形されたボトルは耐ストレスクラック性に劣り、含有
量が多いとゲル化を起こし、ボトルに成形したときに外
観不良、成形性不良を起こす。[0008] Examples of the polyfunctional compound include trimethylolmethane, trimethylolethane, trimethylolpropane, and pentaerythritol, with trimethylolpropane being preferred. The content of polyfunctional compound component units in the saturated polyester is usually 0.2 to 1.0 parts by mole, preferably 0.2 parts by mole, when the dicarboxylic acid compound component units constituting the saturated polyester are 100 parts by mole.
~0.6 mole part, more preferably 0.2-0.4 mole part. When the content of polyfunctional compound component units is small,
The molded bottle has poor stress crack resistance, and if the content is high, gelation occurs, resulting in poor appearance and poor moldability when molded into a bottle.
【０００９】このような飽和ポリエステル樹脂には、テ
レフタル酸およびエチレングリコール以外の他のジカル
ボン酸化合物および／または他のジヒドロキシ化合物が
２０モル％以下の量で共重合されていてもよい。[0009] Such a saturated polyester resin may be copolymerized with a dicarboxylic acid compound other than terephthalic acid and ethylene glycol and/or another dihydroxy compound in an amount of 20 mol% or less.
【００１０】テレフタル酸以外に共重合に用いられるジ
カルボン酸として、具体的には、フタル酸、イソフタル
酸、ナフタレンジカルボン酸、ジフェニルジカルボン酸
、ジフェノキシエタンジカルボン酸などの芳香族ジカル
ボン酸；アジピン酸、セバシン酸、アゼライン酸、デカ
ンジカルボン酸などの脂肪族ジカルボン酸；シクロヘキ
サンジカルボン酸などの脂環族ジカルボン酸などが挙げ
られる。エチレングリコール以外に共重合に用いられる
ジヒドロキシ化合物として、具体的には、トリメチレン
グリコール、プロピレングリコール、テトラメチレング
リコール、ネオペンチルグリコール、ヘキサメチレング
リコール、ドデカメチレングリコールなどの脂肪族グリ
コール；シクロヘキサンジメタノールなどの脂環族グリ
コール；ビスフェノール類；ハイドロキノン、２，２−
ビス（４−β−ヒドロキシエトキシフェニル）プロパン
などの芳香族ジオール類などが挙げられる。In addition to terephthalic acid, dicarboxylic acids used in copolymerization include aromatic dicarboxylic acids such as phthalic acid, isophthalic acid, naphthalenedicarboxylic acid, diphenyldicarboxylic acid, and diphenoxyethanedicarboxylic acid; adipic acid; Aliphatic dicarboxylic acids such as sebacic acid, azelaic acid, and decanedicarboxylic acid; alicyclic dicarboxylic acids such as cyclohexanedicarboxylic acid; and the like. In addition to ethylene glycol, dihydroxy compounds used in copolymerization include aliphatic glycols such as trimethylene glycol, propylene glycol, tetramethylene glycol, neopentyl glycol, hexamethylene glycol, and dodecamethylene glycol; cyclohexanedimethanol, etc. alicyclic glycol; bisphenols; hydroquinone, 2,2-
Examples include aromatic diols such as bis(4-β-hydroxyethoxyphenyl)propane.
【００１１】このような飽和ポリエステルは、エチレン
テレフタレート成分単位単独で、あるいは該エチレンテ
レフタレート成分単位およびジオキシエチレンテレフタ
レート成分単位がランダムに配列してエステル結合を形
成することにより実質上線状のポリエステルを形成して
いる。該飽和ポリエステルが実質上の線状であることは
、該飽和ポリエステルがｏ−クロロフェノールに溶解す
ることによって確認される。[0011] Such a saturated polyester forms a substantially linear polyester by ethylene terephthalate component units alone or by randomly arranging the ethylene terephthalate component units and dioxyethylene terephthalate component units to form ester bonds. are doing. The substantially linear nature of the saturated polyester is confirmed by dissolving the saturated polyester in o-chlorophenol.
【００１２】このような飽和ポリエステルのｏ−クロロ
フェノール中で２５℃で測定した極限粘度［η］は０．
６０〜１．０ｄｌ／ｇ、好ましくは０．６〜０．９ｄｌ
／ｇ、より好ましくは０．６〜０．８ｄｌ／ｇの範囲で
ある。極限粘度［η］が上記のような範囲にあると、溶
融成形性および機械的強度に優れている。The intrinsic viscosity [η] of such a saturated polyester measured in o-chlorophenol at 25°C is 0.
60-1.0dl/g, preferably 0.6-0.9dl
/g, more preferably in the range of 0.6 to 0.8 dl/g. When the intrinsic viscosity [η] is within the above range, melt moldability and mechanical strength are excellent.
【００１３】また、融点は、通常２１０℃〜２６５℃、
好ましくは２２０〜２６０℃であることが望ましく、ガ
ラス転移温度は、通常５０〜１２０℃、好ましくは６０
〜１００℃であることが望ましい。[0013] Furthermore, the melting point is usually 210°C to 265°C,
The temperature is preferably 220 to 260°C, and the glass transition temperature is usually 50 to 120°C, preferably 60°C.
It is desirable that the temperature is between 100°C and 100°C.
【００１４】本発明に係る飽和ポリエステル製炭酸飲料
用ボトルは、図１に例示するように口栓部２、上肩部３
、胴部４、下肩部５および底部６とからなっている。
このようなボトルは、上記のような飽和ポリエステルを
用いて、たとえば下記のようにして製造することができ
る。A carbonated beverage bottle made of saturated polyester according to the present invention has a spout 2, an upper shoulder 3, as illustrated in FIG.
, a trunk 4, a lower shoulder 5 and a bottom 6. Such a bottle can be manufactured using the above-mentioned saturated polyester, for example, in the following manner.
【００１５】まず、上記のような飽和ポリエステルを用
いて、ボトル形成用プリフォームを製造する。このプリ
フォームは、従来公知の方法たとえば射出成形にて得る
ことができる。次に、上記ボトル形成用プリフォームを
加熱し、ブロー金型中で延伸成形してボトルを製造する
。First, a preform for forming a bottle is manufactured using the above-mentioned saturated polyester. This preform can be obtained by a conventionally known method such as injection molding. Next, the bottle-forming preform is heated and stretch-molded in a blow mold to produce a bottle.
【００１６】このようなボトルでは、上肩部３（サポー
トリング下にボトル表面に沿って１５ｍｍ下の位置）に
おける肉厚が０．３５ｍｍ以下、好ましくは０．３４〜
０．３０ｍｍ、より好ましくは０．３２〜０．３１ｍｍ
であることが望ましい。本発明では、特定の多官能性化
合物から導かれる構成単位を特定量含有し、かつ極限粘
度［η］が０．６〜１．０ｄｌ／ｇである飽和ポリエス
テルボトルを用いているので、上肩部における肉厚が０
．３５ｍｍ以下であっても耐ストレスクラック性に優れ
、そのためボトルの軽量化を図ることができる。[0016] In such a bottle, the wall thickness at the upper shoulder portion 3 (a position 15 mm below the support ring along the bottle surface) is 0.35 mm or less, preferably 0.34 to 0.35 mm.
0.30mm, more preferably 0.32-0.31mm
It is desirable that In the present invention, a saturated polyester bottle containing a specific amount of structural units derived from a specific polyfunctional compound and having an intrinsic viscosity [η] of 0.6 to 1.0 dl/g is used. The wall thickness at the part is 0
．． Even if it is 35 mm or less, it has excellent stress crack resistance, and therefore the weight of the bottle can be reduced.
【００１７】また、本発明に係る飽和ポリエステル製炭
酸飲料用ボトルは、下記のようにして定義される延伸指
数が１３０ｃｍ以上、好ましくは１４０〜２３０ｃｍ、
より好ましくは１５０〜２２０ｃｍに延伸されているこ
とが望ましい。Further, the saturated polyester carbonated beverage bottle according to the present invention has a stretch index defined as below of 130 cm or more, preferably 140 to 230 cm,
More preferably, it is preferably stretched to 150 to 220 cm.
【００１８】[0018]
【数２】[Math 2]
【００１９】前記のような飽和ポリエステルを用い、上
記のようにして定義される延伸指数が１３０ｃｍ以上に
延伸し、肩部の肉厚を０．３５ｍｍ以下にすることによ
りさらに耐ストレスクラック性に優れたボトルを得るこ
とができる。[0019] By using the above-mentioned saturated polyester, stretching it to a stretching index defined as above of 130 cm or more, and making the wall thickness of the shoulder part 0.35 mm or less, it has further excellent stress crack resistance. You can get a bottle.
【００２０】以下、ボトルの延伸指数について説明する
。図１において、延伸ボトルの内容は、口栓部２を除い
た延伸ボトル１の内容積であり、具体的には、ボトル１
のサポートリング８より下の内容積であり、より具体的
には、仮想直線９から下のボトルの内容積を意味する。The stretching index of the bottle will be explained below. In FIG. 1, the content of the stretched bottle is the internal volume of the stretched bottle 1 excluding the spout 2, and specifically, the contents of the stretched bottle 1 are
More specifically, it means the internal volume of the bottle below the imaginary straight line 9.
【００２１】また未延伸プリフォームの内容積は、口栓
部２を除いたプリフォーム７の内容積であり、具体的に
は、プリフォーム７のサポートリング８より下の内容積
であり、より具体的には、仮想直線９から下のプリフォ
ームの内容積を意味する。Further, the internal volume of the unstretched preform is the internal volume of the preform 7 excluding the plug portion 2, specifically, the internal volume of the preform 7 below the support ring 8, and is the internal volume of the preform 7 excluding the plug portion 2. Specifically, it means the internal volume of the preform below the virtual straight line 9.
【００２２】さらに延伸ボトルの内表面積は、口栓部２
を除いた延伸ボトル１の内表面積であり、具体的には、
ボトル１のサポートリング８より下の延伸ボトルの内表
面積であり、より具体的には、仮想直線９から下のボト
ルの内表面積を意味する。Furthermore, the inner surface area of the stretched bottle is larger than that of the spout 2.
It is the inner surface area of the stretched bottle 1 excluding
It is the inner surface area of the stretched bottle below the support ring 8 of the bottle 1, and more specifically means the inner surface area of the bottle below the imaginary straight line 9.
【００２３】延伸ボトルの内表面積（口栓部内表面積を
除く）は、ボトルを分割し、三次元測定機で表面形状を
検出して微小部分に分割し、この微小部分の面積を積算
する微小分割法によって測定することができる。なお延
伸ボトルが簡単な形状を有している場合には、ボトルの
胴部を円筒と仮定し、ボトルの下部および上部をそれぞ
れ半球と仮定し、近似値として内表面積を求めることが
できる。[0023] The inner surface area of the stretched bottle (excluding the inner surface area of the spout) can be calculated by dividing the bottle, detecting the surface shape with a three-dimensional measuring machine, dividing it into minute parts, and integrating the areas of the minute parts. It can be measured by the method. Note that when the stretched bottle has a simple shape, the inner surface area can be determined as an approximate value by assuming that the body of the bottle is a cylinder, and assuming that the lower and upper parts of the bottle are hemispheres.
【００２４】したがって上記のような延伸ボトルの延伸
指数は、前記の延伸ボトルの内表面積（口栓部内表面積
を除く）とともに、延伸ボトルの内容積（口栓部内容積
を除く）よび未延伸ボトルの内容積（口栓部内容積を除
く）を求めれば計算することができる。なおボトルの内
容積は、水などの液体を入れることにより容易に測定す
ることができる。Therefore, the stretching index of the above-mentioned stretched bottle is determined by the inner surface area of the stretched bottle (excluding the inner surface area of the spout), the inner volume of the stretched bottle (excluding the inner volume of the spout), and the unstretched bottle. It can be calculated by finding the internal volume (excluding the internal volume of the spout). Note that the internal volume of the bottle can be easily measured by filling it with a liquid such as water.
【００２５】なお、ｆ値および延伸指数の単位は、それ
ぞれｃｍ−１およびｃｍである。[0025] The units of f value and stretch index are cm-1 and cm, respectively.
【００２６】[0026]
【発明の効果】本発明に係る飽和ポリエステル製炭酸飲
料用ボトルは、ジカルボン酸化合物成分単位を１００モ
ル部としたときに、特定の多官能性化合物から導かれる
構成単位を０．２〜１．０モル部含有し、かつ極限粘度
［η］が０．６〜１．０ｄｌ／ｇである飽和ポリエステ
ルからなっており、上肩部の肉厚が０．３５ｍｍ以下の
薄肉のボトルであっても耐ストレスクラック性に優れて
いるので、炭酸飲料が充填され、しかも高温多湿条件下
に長時間保存された場合であっても、ボトルに破損が生
ずることがない。Effects of the Invention The saturated polyester carbonated beverage bottle according to the present invention contains 0.2 to 1.0 parts of structural units derived from a specific polyfunctional compound when the number of dicarboxylic acid compound component units is 100 parts by mole. Even if the bottle is made of saturated polyester containing 0 mole part and has an intrinsic viscosity [η] of 0.6 to 1.0 dl/g, the upper shoulder wall thickness is 0.35 mm or less. Since the bottle has excellent stress crack resistance, the bottle will not be damaged even if it is filled with carbonated beverage and stored for a long time under hot and humid conditions.
【００２７】[0027]
【実施例】以下、本発明を実施例により説明するが、本
発明はこれら実施例に限定されるものではない。[Examples] The present invention will be explained below with reference to Examples, but the present invention is not limited to these Examples.
【００２８】なお本発明ではボトルの耐ストレスクラッ
ク性は、下記のようにして測定される。すなわちボトル
に１４８０ｍｌの水を充填した後、この水をクエン酸−
重曹法によりＣＯ２ 濃度が４ｇａｓ ｖｏｌｕｍｅと
なるように調節する。その後４０℃、９０％相対湿度の
オーブン中に放置し、１日後、３日後、７日後、３０日
後毎に目視によりボトル上肩部（サポートリング下１５
〜２０ｍｍのところ）に発生するクラックを観察する。In the present invention, the stress crack resistance of the bottle is measured as follows. That is, after filling a bottle with 1480 ml of water, this water was added with citric acid.
Adjust the CO2 concentration to 4 gas volume using the baking soda method. After that, the bottle was left in an oven at 40°C and 90% relative humidity, and after 1 day, 3 days, 7 days, and 30 days, the upper shoulder of the bottle (15 below the support ring) was visually inspected.
Observe cracks that occur at ~20 mm).
【００２９】[0029]
【実施例１】ポリエチレンテレフタレート（トリメチロ
ールプロパン含有量０．３モル部、極限粘度［η］０．
７５ｄｌ／ｇ）を名機製作所（株）製成形機Ｍ−１００
Ａで成形し、ボトル成形用プリフォームを得た。この時
の成形温度は２８０〜２９０℃であった。[Example 1] Polyethylene terephthalate (trimethylolpropane content 0.3 mole part, intrinsic viscosity [η] 0.
75 dl/g) using a molding machine M-100 manufactured by Meiki Seisakusho Co., Ltd.
A was molded to obtain a bottle molding preform. The molding temperature at this time was 280 to 290°C.
【００３０】次に上記のようにして得られたプリフォー
ムをＣＯＲＰＯＰＬＡＳ 社製 ＬＢ−０１成形機で成
形し二軸延伸ボトルを得た。プリフォームは付属の赤外
線ヒータで加熱し表面温度は９０〜１００℃であった。Next, the preform obtained as described above was molded using a LB-01 molding machine manufactured by CORPOPLAS to obtain a biaxially stretched bottle. The preform was heated with an attached infrared heater, and the surface temperature was 90 to 100°C.
【００３１】このボトルの上肩部（サポートリング下に
ボトル表面に沿って１５ｍｍ下の位置）の肉厚（円周上
３点の平均）は、０．３３ｍｍであった。このようにし
て得られたボトルの耐ストレスクラック性の評価を行な
った。The wall thickness (average of three points on the circumference) of the upper shoulder portion of this bottle (a position 15 mm below the support ring along the bottle surface) was 0.33 mm. The stress crack resistance of the bottle thus obtained was evaluated.
【００３２】結果を第１表に示す。The results are shown in Table 1.
【００３３】[0033]
【比較例１】トリメチロールプロパンを含有しないポリ
エチレンテレフタレート（極限粘度［η］０．７５ｄｌ
／ｇ）を用いた以外は、実施例１と同様にしてボトルを
製造し、実施例１と同様にしてボトルの耐ストレスクラ
ック性の評価を行った。[Comparative Example 1] Polyethylene terephthalate containing no trimethylolpropane (intrinsic viscosity [η] 0.75 dl
A bottle was manufactured in the same manner as in Example 1, except that 1/g) was used, and the stress crack resistance of the bottle was evaluated in the same manner as in Example 1.
【００３４】結果を第１表に示す。The results are shown in Table 1.
【００３５】[0035]
【表１】[Table 1]
【図１】本発明に係るボトルの概略断面図である。FIG. 1 is a schematic cross-sectional view of a bottle according to the invention.
１ ボトル ２ 口栓部 ３ 上肩部 ４ 胴部 ５ 下肩部 ６ 底部 ８ サポートリング 1 bottle 2. Spout part 3 Upper shoulder 4 Torso 5 Lower shoulder area 6 Bottom 8 Support ring
Claims (2)
底部からなる飽和ポリエステル製炭酸飲料用ボトルにお
いて、上肩部（サポートリング下にボトル表面に沿って
１５ｍｍ下の位置）における肉厚が０．３５ｍｍ以下で
あり、かつ該ボトルが、ジカルボン酸化合物成分単位を
１００モル部としたときに、多官能性化合物成分単位を
０．２〜１．０モル部含有し、極限粘度［η］が０．６
〜１．０ｄｌ／ｇの範囲である飽和ポリエステルからな
ることを特徴とする飽和ポリエステル製炭酸飲料用ボト
ル。Claim 1: In a carbonated beverage bottle made of saturated polyester, which consists of a spout, an upper shoulder, a body, a lower shoulder, and a bottom, the upper shoulder (a position 15 mm below the support ring along the bottle surface) The bottle has a wall thickness of 0.35 mm or less, and the bottle contains 0.2 to 1.0 mole parts of a polyfunctional compound component unit when the dicarboxylic acid compound component unit is 100 mole parts, and Viscosity [η] is 0.6
A carbonated beverage bottle made of saturated polyester, characterized in that it is made of saturated polyester having a content in the range of ~1.0 dl/g.
が１３０ｃｍ以上に延伸されている請求項１に記載の飽
和ポリエステル製炭酸飲料用ボトル。 【数１】2. The saturated polyester carbonated beverage bottle according to claim 1, which has been stretched to a stretching index of 130 cm or more as defined below. [Math 1]
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11877091A JP3023388B2 (en) | 1991-05-23 | 1991-05-23 | Saturated polyester carbonated beverage bottle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11877091A JP3023388B2 (en) | 1991-05-23 | 1991-05-23 | Saturated polyester carbonated beverage bottle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04345831A true JPH04345831A (en) | 1992-12-01 |
| JP3023388B2 JP3023388B2 (en) | 2000-03-21 |
Family
ID=14744641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11877091A Expired - Lifetime JP3023388B2 (en) | 1991-05-23 | 1991-05-23 | Saturated polyester carbonated beverage bottle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3023388B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5912307A (en) * | 1996-05-03 | 1999-06-15 | Bp Amoco Corporation | Polyester compositions |
| GB2331524B (en) * | 1996-05-03 | 2000-09-27 | Amoco Corp | Polyester packages |
-
1991
- 1991-05-23 JP JP11877091A patent/JP3023388B2/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5912307A (en) * | 1996-05-03 | 1999-06-15 | Bp Amoco Corporation | Polyester compositions |
| US6121407A (en) * | 1996-05-03 | 2000-09-19 | Bp Amoco Corporation | Method of making high density polyester compositions |
| GB2331524B (en) * | 1996-05-03 | 2000-09-27 | Amoco Corp | Polyester packages |
| CN1101831C (en) * | 1996-05-03 | 2003-02-19 | 阿莫科公司 | Polyester compositions |
| US6011132A (en) * | 1996-07-11 | 2000-01-04 | Bp Amoco Corporation | Polyester compositions |
| US6107445A (en) * | 1996-07-11 | 2000-08-22 | Bp Amoco Corporation | Method of making high density polyester compositions |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3023388B2 (en) | 2000-03-21 |
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