JPS6229301B2 - - Google Patents
Info
- Publication number
- JPS6229301B2 JPS6229301B2 JP14778677A JP14778677A JPS6229301B2 JP S6229301 B2 JPS6229301 B2 JP S6229301B2 JP 14778677 A JP14778677 A JP 14778677A JP 14778677 A JP14778677 A JP 14778677A JP S6229301 B2 JPS6229301 B2 JP S6229301B2
- Authority
- JP
- Japan
- Prior art keywords
- neck
- circumferential surface
- inner circumferential
- saturated polyester
- crystallized
- 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.)
- Expired
Links
- 229920006395 saturated elastomer Polymers 0.000 claims description 10
- 229920000728 polyester Polymers 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims 1
- 229920001225 polyester resin Polymers 0.000 description 6
- 239000004645 polyester resin Substances 0.000 description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000000071 blow moulding Methods 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000010583 slow cooling Methods 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
Landscapes
- Containers Having Bodies Formed In One Piece (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明は飽和ポリエステル延伸ブロー成形瓶、
特に首部を強化した延伸ブロー成形瓶に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a saturated polyester stretch blow molded bottle;
In particular, it relates to a stretch blow-molded bottle with a reinforced neck.
従来の技術
飽和ポリエステルの延伸ブロー成形瓶は、その
延伸によつて、ガスバリヤー性、透明性およびク
レージング防止性、落しても割れない耐衝撃性に
優れ、さらに衝生面の無害性等多くの利点を有す
るものである。前記利点は飽和ポリエステル樹脂
が延伸されることによつて生起される分子の配向
によつてもたらされるものであり、無延伸の場合
にはその利点は発現されないものである。BACKGROUND TECHNOLOGY Saturated polyester stretch-blow molded bottles have excellent gas barrier properties, transparency, anti-crazing properties, and impact resistance so that they will not break even when dropped. It has advantages. The above-mentioned advantages are brought about by the orientation of molecules caused by stretching the saturated polyester resin, and the advantages are not exhibited when the saturated polyester resin is not stretched.
一方、飽和ポリエステル樹脂を加熱、徐冷を施
して結晶化せしめると、ガスバリヤー性およびク
レージング防止性を一層優れたものとすることが
できるが、その反面非結晶化等に比べて耐衝撃性
が劣るという欠点を有することとなる。 On the other hand, if a saturated polyester resin is heated and slowly cooled to crystallize it, gas barrier properties and anti-crazing properties can be made even better, but on the other hand, impact resistance is lower than that of amorphous polyester resins. It has the disadvantage of being inferior.
しかるに、飽和ポリエステル樹脂製の延伸ブロ
ー成形瓶は、胴部は延伸ブロー成形されるが、首
部は無延伸であるため、高濃度のアルコール、エ
ステル等の内容物を充填する場合、無延伸である
首部の内周面が前記内容物によつてクレージング
を生ずることがある。 However, in stretch-blow molded bottles made of saturated polyester resin, the body is stretch-blow-molded, but the neck is not stretched. The inner circumferential surface of the neck may craze due to the contents.
本発明が解決しようとする問題点
本発明は、高濃度のアルコール、エステル等の
内容物を充填する場合、首部が無延伸であつて
も、その内周面にクレージングを発現させること
がなく、また耐衝撃性も極端に低下しないように
することにある。Problems to be Solved by the Present Invention The present invention is capable of preventing crazing on the inner circumferential surface of the neck even if the neck is not stretched when filled with a highly concentrated content such as alcohol or ester. Also, the purpose is to prevent the impact resistance from decreasing excessively.
問題点を解決するための手段
本発明は前記問題点を解決するために、無延伸
首部の内周面のみを加熱、徐冷して、該内周面の
みが結晶化されている首部とすることにより、無
延伸首部の内周面のクレージングを防止し、かつ
首部の外側部分の未結晶化部分をもたせることに
よつて、首部全体を結晶化させたものに比べて耐
衝撃性が優れたものとしたものである。Means for Solving the Problems In order to solve the above-mentioned problems, the present invention heats and slowly cools only the inner circumferential surface of the non-stretched neck to form a neck in which only the inner circumferential surface is crystallized. This prevents crazing on the inner circumferential surface of the unstretched neck, and by providing an uncrystallized portion on the outside of the neck, it has superior impact resistance compared to one in which the entire neck is crystallized. It was taken as a thing.
実施例
本発明は飽和ポリエステル樹脂においては、無
延伸であつても加熱、徐冷した場合は、結晶化が
おこり、白化するが、この状態になると化学的に
安定し高濃度のアルコール等にも侵されることが
ないという性質のあることを利用する。Example In the present invention, even if saturated polyester resin is not stretched, if it is heated and slowly cooled, it will crystallize and turn white, but in this state it is chemically stable and can withstand high concentrations of alcohol, etc. Take advantage of its inviolable nature.
本発明の飽和ポリエステル延伸ブロー成形瓶
は、延伸ブロー成形、徐冷後に、無延伸首部の内
周面に加熱処理が加えられた後、徐冷が施される
ことにより、首部の内周面のみが結晶化され、首
部の外側部分は未結晶化であるようにしたもので
ある。 After stretch blow molding and slow cooling, the saturated polyester stretch blow molded bottle of the present invention is heat-treated on the inner circumferential surface of the unstretched neck, and then slowly cooled, so that only the inner circumferential surface of the neck is heated. is crystallized, and the outer part of the neck is uncrystallized.
本発明の効果
本発明の飽和ポリエステル延伸ブロー成形瓶
は、前記した首部を有するもので、高濃度のアル
コールを含有する化粧品、食品、その他の内容物
および界面活性剤、有機溶剤等を瓶に充填して
も、首部内周面のみが積極的に結晶化されている
ことにより、該首部が無延伸であつて、延伸され
た胴部と同様に、首部内周面のクレージングの発
現を防止でき、また首部内周面のみが結晶化され
ていることにより、結晶化が有する耐衝撃性の劣
化という欠点を首部の外側部分の結晶化されない
部分でカバーし、首部全体の耐衝撃性が極端に低
下することを防止できるものである。Effects of the Invention The saturated polyester stretch blow-molded bottle of the present invention has the above-described neck, and is filled with cosmetics, foods, and other contents containing high concentrations of alcohol, surfactants, organic solvents, etc. However, since only the inner circumferential surface of the neck is actively crystallized, the neck is not stretched and, like the stretched trunk, the occurrence of crazing on the inner circumferential surface of the neck can be prevented. In addition, because only the inner circumferential surface of the neck is crystallized, the drawback of crystallization, which is the deterioration of impact resistance, is covered by the non-crystallized outer part of the neck, and the impact resistance of the entire neck is extremely high. This is something that can be prevented from decreasing.
Claims (1)
特徴とする飽和ポリエステル延伸ブロー成形瓶。1. A saturated polyester stretch blow-molded bottle characterized in that only the inner peripheral surface of the neck is crystallized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14778677A JPS5468384A (en) | 1977-12-09 | 1977-12-09 | Extended blowwmolded bottle made of saturated polyester and resistant to whitening and crazing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14778677A JPS5468384A (en) | 1977-12-09 | 1977-12-09 | Extended blowwmolded bottle made of saturated polyester and resistant to whitening and crazing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5468384A JPS5468384A (en) | 1979-06-01 |
| JPS6229301B2 true JPS6229301B2 (en) | 1987-06-25 |
Family
ID=15438155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14778677A Granted JPS5468384A (en) | 1977-12-09 | 1977-12-09 | Extended blowwmolded bottle made of saturated polyester and resistant to whitening and crazing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5468384A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2024087B (en) * | 1978-06-29 | 1982-08-25 | Yoshino Kogyosho Co Ltd | Blow moulding polyester container |
| US5261545A (en) * | 1978-06-29 | 1993-11-16 | Yoshino Kogyosho Co., Ltd. | Polyester container |
| FR2658119B1 (en) * | 1990-02-13 | 1992-06-05 | Sidel Sa | METHOD AND INSTALLATION FOR MANUFACTURING CONTAINERS, SUCH AS BOTTLES, OF POLYETHYLENETEREPHTHALATE, RESISTANT TO RELATIVELY SEVERED THERMAL CONDITIONS DURING THEIR USE. |
| FR2691401B1 (en) * | 1992-05-20 | 1994-08-05 | Sidel Sa | UNIT FOR THE HEAT TREATMENT OF PET CONTAINERS DURING THE MANUFACTURE THEREOF. |
| PE9895A1 (en) * | 1993-05-13 | 1995-05-15 | Coca Cola Co | METHOD FOR OBTAINING A BEVERAGE CONTAINER HAVING AN INTERNAL SURFACE WITH A RELATIVELY LOW PERMEABILITY / ABSORPTION |
-
1977
- 1977-12-09 JP JP14778677A patent/JPS5468384A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5468384A (en) | 1979-06-01 |
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