CYLINDRICAL PREFORM FOR MANUFACTURING MEDICAL LIQUID STORAGE CONTAINER BODY AND METHOD OF MANUFACTURING MEDICAL LIQUID STORAGE CONTAINER BODY

• Main Authors: ISHIKAWA TAKASHI, ADACHI RYUICHIRO
• Format: Patent
• Language: English; Japanese
• Published: 08.08.2019
• Subjects: BABY COMFORTERS; CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICALPURPOSES; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; DEVICES FOR RECEIVING SPITTLE; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGINGPHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL ORADMINISTERING FORMS; HUMAN NECESSITIES; HYGIENE; MEDICAL OR VETERINARY SCIENCE

To provide a cylindrical preform that allows manufacturing of a medical liquid storage container body of which an expanded flat cylindrical portion formed by blow molding has a substantially uniform wall thickness all around the circumference.SOLUTION: A cylindrical preform 1 is for manufacturing, by biaxially stretching blow molding, a medical liquid storage container body 10 which has a discharge portion 21 and an expanded flat cylindrical portion 20 closed at its top end. The preform 1 comprises a closed top end 6, a bottom end 4 forming the discharge portion 21, and a cylindrical main body portion 3 linking the top end and the bottom end. The cylindrical main body portion 3 has a cylindrical portion 31 with an axially orthogonal cross section having a substantially perfect circular outer edge. Formed in the inside of the cylindrical portion are: two opposing thicker wall portions 31a, 31b extending in a predetermined major axial direction; and two opposing thinner wall portions 31c, 31d formed between the two thicker wall portions.SELECTED DRAWING: Figure 9 【課題】ブロー成形により形成される拡張扁平筒状部が全周的にほぼ均一な肉厚を備える医療用液体収納容器体の製造が可能な筒状プリフォームを提供する。【解決手段】筒状プリフォーム１は、排出部２１と、上端にて閉塞した拡張扁平筒状部２０とを有する医療用液体収納容器体１０を二軸延伸ブロー成形により作製するためのものである。プリフォーム１は、閉塞した上端部６と、排出部２１を形成する下端部４と、上端部と下端部間を連結する筒状本体部３とを備える。筒状本体部３は、軸方向直交断面の外縁がほぼ真円である円筒部３１を有する。円筒部は、その内面に形成され、所定長軸方向に延びかつ向かい合う２つの肉厚部３１ａ，３１ｂと、２つの肉厚部間に形成された向かい合う２つの肉薄部３１ｃ，３１ｄを備える。【選択図】図９