GB684890A - Improvements in or relating to methods of and apparatus for forming a paper or like bag - Google Patents
Improvements in or relating to methods of and apparatus for forming a paper or like bagInfo
- Publication number
- GB684890A GB684890A GB3216/51A GB321651A GB684890A GB 684890 A GB684890 A GB 684890A GB 3216/51 A GB3216/51 A GB 3216/51A GB 321651 A GB321651 A GB 321651A GB 684890 A GB684890 A GB 684890A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bag
- moved
- forming
- blade
- anvil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B70/00—Making flexible containers, e.g. envelopes or bags
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B70/00—Making flexible containers, e.g. envelopes or bags
- B31B70/26—Folding sheets, blanks or webs
- B31B70/261—Folding sheets, blanks or webs involving transversely folding, i.e. along a line perpendicular to the direction of movement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B2150/00—Flexible containers made from sheets or blanks, e.g. from flattened tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B2150/00—Flexible containers made from sheets or blanks, e.g. from flattened tubes
- B31B2150/001—Flexible containers made from sheets or blanks, e.g. from flattened tubes with square or cross bottom
- B31B2150/0016—Flexible containers made from sheets or blanks, e.g. from flattened tubes with square or cross bottom made from already formed bags
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B2160/00—Shape of flexible containers
- B31B2160/10—Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B2160/00—Shape of flexible containers
- B31B2160/20—Shape of flexible containers with structural provision for thickness of contents
Landscapes
- Making Paper Articles (AREA)
Abstract
684,890. Making paper and like bags. ROBINSON (CANADA) Ltd., E. S. & A. Feb. 9, 1951 [Feb. 9, 1950], No. 3216/51. Class 94(ii) Relates to a method of forming a self-opening satchel bottom bag from a tube with side bellows folds, or of converting an already formed plain square bottom bag to a self-opening satchel bottom bag. As shown in Fig. 1 a plain square bottom type bag 10 comprises a length of flattened tubular material having opposed bellows folds 11, the end 12 at the bottom forming portion being sealed and folded back about a fold line 14 and secured to the adjacent side wall by an adhesive. Spaced parallel crease lines 15 and 16 are also provided. A forming anvil 18 is movable toward the bottom edge 14 of the bag, and two opening blade mechanisms 21 are arranged on opposite sides of the bag. The mechanisms 21, Fig. 16, comprise blade-like members 23, 24 mounted for coaxial contrarotating movement on a sleeve 26, and a shaft 25 respectively, means being provided to rotate the sleeve 26 and shaft 25 relative to each other in the desired manner. When the blade mechanisms 21 are moved to their innermost position, adjacent the inner limits of the bellows folds 11, the anvil member 18 is moved toward the bottom fold 14 to grip the bottom folded portions of the bag between the edge of the anvil and the edges of the folding blades 23, 24, Fig. 5. The blades 23, 24, are then opened, Fig. 7 and 8, to produce a square flat bottom in the bag 10, Fig. 13 and 14, comprising rectangular areas 33, 34, extending between the initial fold line 14 and the transverse crease lines 15, the bottom ends of the bellows folds being formed into connected pairs of triangular shaped fold portions 35, 36. The blades 23, 24, are moved to the position shown in Fig. 9 and force the bottom forming portions 33, 34 against the surfaces 19, 20, of the anvil member 18, causing the side walls of the bag to collapse inwardly, and a pair of opposed creaser members 41, 42, are moved into pressing engagement with the bottom of the bag. This produces the triangular fold portions 39, 40, and 47, 48, in the bag. After the members 41, 42 are withdrawn the blade 23 is moved .clockwise, Fig. 11, to position the folded bottom portion at an angle to the plane of the collapsed body portion, and the blade mechanisms 21 are then withdrawn and the anvil member 18 retracted. The 'bag is then passed between a pair of endless belts, Fig. 12 (not shown) to flatten the bottom of the bag against the body. An alternative method of producing a bag having the same bottom formation is described, Fig. 17 to 30 (not shown). The portion 12 is not initially bent over and secured to the side wall as in Fig. 1, but the anvil member comprises two jaws which grip the portion 12 during the folding operations, after which this protruding portion is attached to the bottom forming portion of the bag.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US684890XA | 1950-02-09 | 1950-02-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB684890A true GB684890A (en) | 1952-12-24 |
Family
ID=22082905
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3216/51A Expired GB684890A (en) | 1950-02-09 | 1951-02-09 | Improvements in or relating to methods of and apparatus for forming a paper or like bag |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB684890A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3395622A (en) * | 1967-05-01 | 1968-08-06 | Kugler Emanuel | Satchel bottom bag manufacture |
FR2420423A1 (en) * | 1978-03-24 | 1979-10-19 | Union Carbide Corp | PROCESS FOR PRODUCING A PLASTIC BAG WITH A FLAT BOTTOM |
US4273550A (en) * | 1978-03-24 | 1981-06-16 | Union Carbide Corporation | Method for producing a flat bottom plastic bag |
CN104149389A (en) * | 2014-07-31 | 2014-11-19 | 江苏申凯包装高新技术股份有限公司 | Adjustable flanged plate used for making accordion pockets |
CN113787770A (en) * | 2021-08-25 | 2021-12-14 | 重庆醉美包装印务有限公司 | Bag body forming processing technology and equipment |
-
1951
- 1951-02-09 GB GB3216/51A patent/GB684890A/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3395622A (en) * | 1967-05-01 | 1968-08-06 | Kugler Emanuel | Satchel bottom bag manufacture |
FR2420423A1 (en) * | 1978-03-24 | 1979-10-19 | Union Carbide Corp | PROCESS FOR PRODUCING A PLASTIC BAG WITH A FLAT BOTTOM |
US4273550A (en) * | 1978-03-24 | 1981-06-16 | Union Carbide Corporation | Method for producing a flat bottom plastic bag |
CN104149389A (en) * | 2014-07-31 | 2014-11-19 | 江苏申凯包装高新技术股份有限公司 | Adjustable flanged plate used for making accordion pockets |
CN113787770A (en) * | 2021-08-25 | 2021-12-14 | 重庆醉美包装印务有限公司 | Bag body forming processing technology and equipment |
CN113787770B (en) * | 2021-08-25 | 2023-08-04 | 重庆醉美包装印务有限公司 | Bag body forming processing technology and equipment |
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