Extremely thin hollow container made of synthetic resin



(57)【要約】 【課題】 ポリプロピレンやポリエチレンテレフタレー ト等の熱可塑性樹脂からなる2軸延伸成形中空容器に於 いて、容器の壁厚が超薄肉に形成され、且つ、落下衝撃 に対しても強い構造をして、リサイクルが容易で安定し た自立性を有するワンピース型の中空容器。 【解決手段】 熱可塑性合成樹脂を2軸延伸ブロー成形 により口頸部5、肩部4、胴部2及び底部3とからなる 壜状に形成した中空容器に於いて、前記底部壁3を内側 へ湾曲した球面状に形成すると共に着底部3aのみを肉 厚に形成して、着底部を除いた肩部、胴部及び底部を2 軸延伸せしめて超薄肉に形成すると共に、底部外周壁に 内側へ凹溝状をしたリブ3cを形成して、落下衝撃力を 分散吸収するようにした自立型の中空容器に構成する。
PROBLEM TO BE SOLVED: To obtain a one-piece hollow container which is easy to recycle having stable self-standing ability in a biaxially-oriented-molded hollow container made of thermoplastic resin such as polypropylene or polyethylene terephthalate wherein a wall thickness of the container is formed to be extremely thin and the container has a strong structure against drop impact. SOLUTION: In a hollow container formed with thermoplastic synthetic resin into a bottle-like shape including a neck 5, a shoulder 4, a body 2 and a bottom 3 by biaxially oriented blow molding, the bottom wall 3 is formed to be spherically curved inward. In addition only a contact bottom part 3a is formed to be thick, while the shoulder, the body and the bottom except the contact bottom part are biaxially oriented to be formed to be extremely thin, while a rib 3c shaped like a inward-recessed groove is formed on a bottom outer peripheral wall to deconcentrate and absorb drop impact, thereby providing a self-standing hollow container. COPYRIGHT: (C)1998,JPO




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Cited By (12)

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    EP-1471010-A1October 27, 2004Yoshino Kogyosho Co., Ltd.Recipient de type bouteille a paroi mince en resine synthetique
    EP-1471010-A4January 10, 2007Yoshino Kogyosho Co LtdDünnwandiger flaschenbehälter aus kunstharz
    JP-2009286454-ADecember 10, 2009Yoshino Kogyosho Co Ltd, 株式会社吉野工業所延伸ブロー成形容器及びその成形方法。
    JP-2012136247-AJuly 19, 2012Yoshino Kogyosho Co Ltd, 株式会社吉野工業所合成樹脂製容器
    KR-100704254-B1April 06, 2007가부시키가이샤 요시노 고교쇼Synthetic resin thin-walled bottle container
    KR-100877653-B1January 12, 2009가부시키가이샤 요시노 고교쇼합성수지제 박육용기
    US-7556164-B2July 07, 2009Yoshino Kogyosho Co., Ltd.Synthetic resin thin-walled bottle container with bottom heel
    US-7748553-B2July 06, 2010Yoshino Kogyosho Co., Ltd.Synthetic resin container with thin wall
    US-8123055-B2February 28, 2012Charles LovingBiaxially oriented inner bottle with external threads for personage cups
    US-8424709-B2April 23, 2013Sidel ParticipationsBottom of a mold for producing thermoplastic containers, and container obtained
    WO-03064269-A1August 07, 2003Yoshino Kogyosho Co., Ltd.Recipient de type bouteille a paroi mince en resine synthetique
    WO-2009092936-A1July 30, 2009Sidel ParticipationsFond de moule pour la fabrication de recipients thermoplastiques et recipient obtenu