CAP AND MANUFACTURING METHOD THEREFOR

• Main Authors: TAKAGI KENJI, ARAKI EIJI, FUJISHIGE EIJI
• Format: Patent
• Language: English; Japanese
• Published: 17.08.2022
• Subjects: ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS,e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES,DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; CONVEYING; HANDLING THIN OR FILAMENTARY MATERIAL; PACKAGES; PACKAGING ELEMENTS; PACKING; PERFORMING OPERATIONS; STORING; TRANSPORTING

To provide a cap and manufacturing method therefor, capable of completely preventing drop-off of a seal member without damaging a skirt part.SOLUTION: A cap 1 includes: a cap body 11 with a top plate part 21 and a cylindrical skirt p-art 22 mounted on the top plate part 21; a seal member 12 separated from the cap body 11 and mounted in the cap body 11 to face the top plate part 21; a plurality of locking parts 31 in the peripheral direction of the skirt part 22 and supporting the seal member 12 while projecting inward in the radial direction of the skirt part 22; a plurality of small-diameter parts 35a provided between the locking part 31 and the top plate part 21 of the skirt part 22, and provided respectively on the sides of the top plate part 21 of the locking part 31 in the axial direction; and a plurality of large-diameter parts 35b provided adjacent to the small-diameter part 35a in the peripheral direction and each having an inscribed circle diameter larger than the inscribed circle diameter of each of the plurality of small-diameter parts 35a.SELECTED DRAWING: Figure 4 【課題】スカート部を損傷することなく、確実に密封部材の脱落を防止できるキャップ及びキャップの製造方法を提供すること。【解決手段】キャップ１は、天板部２１及び天板部２１に設けられた筒状のスカート部２２を有するキャップ本体１１と、キャップ本体１１と別体に、天板部２１と対向してキャップ本体１１内に設けられた密封部材１２と、スカート部２２の周方向に複数設けられ、スカート部２２の半径方向内方に突出して密封部材１２を支持する係止部３１と、スカート部２２の係止部３１及び天板部２１の間に設けられ、軸方向で係止部３１の天板部２１側にそれぞれ設けられた複数の小径部３５ａと、小径部３５ａと周方向で隣接して複数設けられ、内接円径が複数の小径部３５ａの内接円径よりも大径の大径部３５ｂと、を備える。【選択図】 図４