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2. 发明专利

JP2006224515A MACHINE FOR FORMING SQUARE-BOTTOMED BAG 审中-公开
公开(公告)号：JP2006224515A
公开(公告)日：2006-08-31
申请号：JP2005042219
申请日：2005-02-18
申请人： MIYAKOSHI PRINTING MACH
发明人： SAITO KIYOTAKA , SUMIDA MASAHIRO
IPC分类号： B31B31/26 , B31B31/60
摘要： PROBLEM TO BE SOLVED: To provide a bag forming machine for thin paper which prevents the occurrence of wrinkles. SOLUTION: The machine for forming a square-bottomed bag comprises a paper cylinder feeder for feeding a paper cylinder having gore parts which are folded, stuck, and infolded in an M-shape in its both side parts, a folding streak forming device for forming a folding streak for forming a square bottom in one end part in the conveyance direction of the paper cylinder, the first bottom opening device which opens one end of the paper cylinder in the surface back direction along the folding streak while the paper cylinder is moved along a rotating bottom folding drum, the second bottom opening device which pushes/opens a part opened vertically in the shape of flaps on the surface side and the back side along the folding streak, a press which presses each flap opened in a flap-shape in the shape of a plane, an applicator for applying paste to prescribed parts of the opened flaps, a folding device for folding flap pieces on the tip sides of the flaps on the surface side and the back side, and a folding device for folding/piling both flap pieces inside. COPYRIGHT: (C)2006,JPO&NCIPI

3. 发明专利

JP2001219484A METHOD FOR MANUFACTURING PAPER BAG 失效
公开(公告)号：JP2001219484A
公开(公告)日：2001-08-14
申请号：JP2000033586
申请日：2000-02-10
申请人： ONOGI SEITAI KK
发明人： ONOKI NOBUYOSHI
IPC分类号： B65D30/20 , B31B31/26
摘要： PROBLEM TO BE SOLVED: To provide a bag making method capable of efficiently mass-producing a paper bag large in side surface width by a sheet-fed bag making machine. SOLUTION: At first, raw paper 1 is parallelly folded at two places so that both end edges 3A, 3B of the raw paper 1 are overlapped with each other to form a flat cylindrical body 5 having two folds 4 as lateral sides 4A, 4B. Next, folding lines 7 are provided to both sides of the cylindrical body 5 along the lateral sides 4A, 4B and, thereafter, while one end opening part 11 of the cylindrical body 5 is expanded, both ends thereof are bent into a triangular shape wherein a vertical angle 15A comes into contact with the lateral sides 4A, 4B to form a polygonal developed part 13 having the triangular parts 15 on both sides thereof. Then, the opposed regions of the developed part 13 are folded to form corner bottom parts.

4. 发明专利

JPH1191005A BAG MAKING MACHINE AND BAG MAKING METHOD 失效
公开(公告)号：JPH1191005A
公开(公告)日：1999-04-06
申请号：JP26072597
申请日：1997-09-25
申请人： DAINIPPON INK & CHEMICALS , TOKYO PACK SEIKI KK
发明人： TAKAHASHI YUKIO
IPC分类号： B31B31/26 , B31B31/60 , B31B31/32 , B31B31/62
摘要： PROBLEM TO BE SOLVED: To improve the accuracy of folding position as well as the bonding position of a bag making paper and permit bag making so as to cope with respective paper qualities by a method wherein a forming plate is arranged so as to cope with the upper inside position of folding line of the bag making paper to fold the same from the folding line while the bag making paper under transferring is transferred after setting the posture of the same. SOLUTION: A second folding process unit is provided with a roller conveyor 51, having the same constitution substantially as that of a first folding process unit 42, a second turning work unit 54, turning a bag making paper through double turning in accordance with folding lines and gluing, and a posture setting and transferring means, pinching the central part of left-and-right folding lines of the bag making paper from upper and lower sides under a condition that the same paper is provided with a length in the transferring direction of the same and setting the posture of the bag making paper being transferred to the second folding work unit 54. The second turning work unit 54 is provided with a second forming plate 54A, opposed to the upper side position of the folding lines, a folding unit 59, turning through double turning in accordance with the folding lines, and a guide unit 54B, for guiding the popped-up double folding part to a glue spreading part.

5. 发明专利

JPH1177862A FLAP FOLDING APPARATUS FOR SQUARE BOTTOM BAG 失效
公开(公告)号：JPH1177862A
公开(公告)日：1999-03-23
申请号：JP25075597
申请日：1997-09-16
申请人： TOKYO PACK SEIKI KK , DAINIPPON INK & CHEMICALS
发明人： TAKAHASHI YUKIO
IPC分类号： B31B31/26
摘要： PROBLEM TO BE SOLVED: To eliminate gripping damage near a flap folding of a square bottom bag and to facilitate regulation of a position or the like, by an operation for folding a flap to become a bottom of the bag to an opposite side. SOLUTION: A flap folding apparatus folds one flap 5a of a paper cylinder 1 fixed to a rotary drum 11 via a rear pawl 12 to a rotation side of the drum 11. The apparatus comprises a fold pressing mechanism 16 for pressing a folding line 3a for folding the one flap 5a from an upper side by a fold pressing blade 23, a sucking and erecting mechanism 17 for sucking the flap 5a by a vacuum pad 29 and erecting the line 3a to a fulcrum from the cylinder 1, and a bottom closing mechanism 18 for folding the flap 5 erected from the cylinder 1 to the opposite side by a bottom closing member 45.

6. 发明专利

JPS5745667B2 失效
公开(公告)号：JPS5745667B2
公开(公告)日：1982-09-29
申请号：JP5662478
申请日：1978-05-15
IPC分类号： B31B29/26 , B31B31/00 , B31B31/26

7. 发明专利

JPS5395773A DEVICE FOR PRODUCING ENVELOPE WITH FOLDS 失效
公开(公告)号：JPS5395773A
公开(公告)日：1978-08-22
申请号：JP831877
申请日：1977-01-28
申请人： SASE EIZOU
发明人： SASE EIZOU , OGAWA KATSUJI
IPC分类号： B31B31/00 , B31B31/26

8. 发明专利

JPS52146367A METHOD OF MANUFACTURING RECTANGULAR BOTTOM BAG 失效
公开(公告)号：JPS52146367A
公开(公告)日：1977-12-06
申请号：JP6078476
申请日：1976-05-26
申请人： NIPPON TOTSUKIYO KANRI KK
发明人： INAGAKI KOUDOU
IPC分类号： B31B29/26 , B31B31/26

9. 发明专利

JPS52110171A APPARATUS FOR MANUFACTURING BAG WITH RECTANGULAR BOTTOM 失效
公开(公告)号：JPS52110171A
公开(公告)日：1977-09-16
申请号：JP2647876
申请日：1976-03-10
申请人： ONO SHIROU
发明人： OONO SHIROU
IPC分类号： B31B29/26 , B31B31/26 , B31B50/28

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