Easy opening package and manufacturing method of easy-open package

Patent name E-opening package and manufacturing method of easy-open package Patent applicant Idemitsu Unified Technology Co., Ltd. Main applicant address Tokyo Tokyo inventor Hiroshi Toru; Takahashi Bakuku application (patent) No. 200480005165.2 Date of application 2004.02.24 Certification Date Approval Notice No. 1753818 Approved Announcement Date 2006.03.29 Instruction CD-ROM D0613-1 Main Classification No. B65D77/20(2006.01) I Classification No. B65D77/20(2006.01)I; B65D53/00(2006.01)I Partition Original Application No. First 2003.2.26 JP 049682/2003 Abstract The easy-open package (1) of the present invention is provided with a container body (10) having a flange portion (14) formed on the periphery of the opening (13), and heat-sealed in a convex shape. The lid member (20) that seals the opening (13) on the edge (14) has a flange portion (14) formed with a surrounding opening (13) on each of the inner peripheral side and the outer peripheral side. The inner circumferential side slit (15A) and the outer circumferential side slit (15B), the flange portion (14) and the lid member (20) are narrowed by the first seal portion (16A) having a predetermined width and the width smaller than the first seal portion (16A) The second sealing portion (16B) is heat-sealed, and the first sealing portion (16A) surrounds the opening portion (13) and forms an incision at the inner peripheral side. Between the (15A) and the outer peripheral slit (15B), the second sealing portion (16B) is formed in the first sealing portion (16A) so as to surround the opening portion (13) along the first sealing portion (16A). Inside the area, the second seal portion (16B) has a protruding seal portion (17) projecting to the outside from the other portions at a position corresponding to the handle (21). Sovereignty Item 1. An easy-open package including a container body formed by forming a multi-layer sheet and having a flange formed on the periphery of the opening, and heat-sealing the flange to seal the above In the cover material of the opening portion, an opening opening portion is formed on the outer periphery of the cover material, and when peeling the cover material from the opening opening portion, at least the innermost layer of the container body as the heat-sealed portion of the flange portion is formed. When peeled off at the time of opening, it is peeled off together with the lid member, and the flange portion is formed with an inner peripheral side cutout and an outer peripheral cutout that surrounds the opening on each of the inner peripheral side and the outer peripheral side of the flange portion. The first flange portion and the lid member are heat-sealed with a predetermined width of the first seal portion and a second seal portion having a width smaller than that of the first seal portion, and the first seal portion surrounds the opening portion and is formed at the inner periphery. Between the side slit and the outer peripheral side slit, the second seal portion is formed inside the region of the first seal portion so as to surround the opening portion along the first seal portion, and the second seal portion starts from the above unsealing. The corresponding position in the beginning has its Portion projecting outwardly from the comparison. International Application 2004-02-24 PCT/JP2004/002137 International Publication 2004-09-10 WO2004/076311