GB677256A - Improvements in or relating to bag bottom forming apparatus - Google Patents

Improvements in or relating to bag bottom forming apparatus

Info

Publication number
GB677256A
GB677256A GB22780/49A GB2278049A GB677256A GB 677256 A GB677256 A GB 677256A GB 22780/49 A GB22780/49 A GB 22780/49A GB 2278049 A GB2278049 A GB 2278049A GB 677256 A GB677256 A GB 677256A
Authority
GB
United Kingdom
Prior art keywords
bag
pair
tube
rollers
bags
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
Application number
GB22780/49A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ST Regis Paper Co
Original Assignee
ST Regis Paper Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ST Regis Paper Co filed Critical ST Regis Paper Co
Publication of GB677256A publication Critical patent/GB677256A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING 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
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00Making flexible containers, e.g. envelopes or bags
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING 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
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00Making flexible containers, e.g. envelopes or bags
    • B31B70/02Feeding or positioning sheets, blanks or webs
    • B31B70/10Feeding or positioning webs
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING 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
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2150/00Flexible containers made from sheets or blanks, e.g. from flattened tubes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING 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
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2150/00Flexible containers made from sheets or blanks, e.g. from flattened tubes
    • B31B2150/001Flexible containers made from sheets or blanks, e.g. from flattened tubes with square or cross bottom
    • B31B2150/0014Flexible containers made from sheets or blanks, e.g. from flattened tubes with square or cross bottom having their openings facing transversally to the direction of movement
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING 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
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2150/00Flexible containers made from sheets or blanks, e.g. from flattened tubes
    • B31B2150/003Flexible containers made from sheets or blanks, e.g. from flattened tubes made from tubular sheets
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING 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
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2160/00Shape of flexible containers
    • B31B2160/10Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING 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
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2160/00Shape of flexible containers
    • B31B2160/10Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents
    • B31B2160/106Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents obtained from sheets cut from larger sheets or webs before finishing the bag forming operations
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING 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
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2160/00Shape of flexible containers
    • B31B2160/20Shape of flexible containers with structural provision for thickness of contents

Landscapes

  • Making Paper Articles (AREA)

Abstract

677.256. Making paper bags. ST. REGIS PAPER CO. Sept. 2, 1949 [Sept. 11, 1948], No. 22780/49. Class 94(ii) A machine for forming paper bags, particularly multi-ply valve-bags, comprises means for conveying a succession of bag tubes over a predetermined path at a constant speed ratio with respect to spaced operating-devices such as slitters, spreaders, adhesive-applying and folding means, the devices being connected to the conveying means for actuation in timed relationship. As shown, a pair of endless conveyer chains 31, 32 is fitted with spaced pairs of baggrippers 37 each comprising a fixed and a movable jaw, the latter being normally spring-closed and opened by cam-action to receive and grasp a flattened bag-tube 55, and to release the same after the bag-forming operation is completed. The stages in the formation of a bag are illustrated at a-h. in Fig. 17. The flattened tube is first moved to a location 56 where slits 55a, Fig. 17(a) are formed, the slitting being effected by a pair of rotary knives 56a co-operating with rotary grooved backing-members 58. The tube next passes between a pair of scoring-rollers 71 and grooved backing- rollers 73 to form a folding line 72, Fig. 17(b), near each end of the tube. The flattened tube ends are next bent up by shoes 83, 84 and partially opened by means of suction-cups 85, 86 before passing to spreader units 82, Fig. 3. These comprise pairs of oppositely-rotating fingers shown in Fig. 7. A first pair 104, 105 enters the tube to form the side flaps 108, 109, Fig. 17(d) after which a second pair 112, 113 enters to form the leading corner flap 110. The trailing corner flap 111 is then spread by a third pair of fingers 116. 117. Eccentric toothed gearing, Figs. 10, 11, (not shown) is provided so that the fingers 112, 113, move at greatest speed when contacting the leading corner flap 110; this drive also includes a yielding spring coupling, Figs. 8, 9, (not shown). The fingers of a set are adjustably mounted on their shaft. The flattened tube then passes between pressing rollers 162, 163 to iron the spread corner and side flaps. The bottom and top fold-lines 164, Fig. 17(e), are then formed by pairs of scoring- rollers 166, 167 after which adhesive is applied to preselected areas of the corner and side flaps of the spread bag. Mechanism is next reached for forming and applying a bag valve sleeve 186, Fig. 17(g), after which folding along the lines 164 is effected to form the finished bottom and top as seen in Fig. 17(h). Referring to Fig. 2, the strip material 188a for forming the bag valve sleeves is fed from a stockroll 188 over adhesive applyer 198 and rolls 190, 191, 192 to a shaping mandrel 193, and after severing, the sleeves are applied to the bags by means of a roller 189. The bags are then passed between rollers 244, 245, which exert light pressure on the pasted seams, on to a delivery-conveyer 247. Differential gear apparatus such as 68, 100, 149a, Fig. 1, manually adjustable during operation, provides for obtaining the required phase relationship of the various operations. The machine is adjustable for different length and width of bag.
GB22780/49A 1948-09-11 1949-09-02 Improvements in or relating to bag bottom forming apparatus Expired GB677256A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US677256XA 1948-09-11 1948-09-11

Publications (1)

Publication Number Publication Date
GB677256A true GB677256A (en) 1952-08-13

Family

ID=22077979

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22780/49A Expired GB677256A (en) 1948-09-11 1949-09-02 Improvements in or relating to bag bottom forming apparatus

Country Status (1)

Country Link
GB (1) GB677256A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0688663A2 (en) * 1994-06-22 1995-12-27 Josef Bäumer Method of making a bag by folding a block bottom in one or both ends
CN109624400A (en) * 2018-12-29 2019-04-16 佛山市达肯包装机械有限公司 The drive mechanism of impression device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0688663A2 (en) * 1994-06-22 1995-12-27 Josef Bäumer Method of making a bag by folding a block bottom in one or both ends
EP0688663A3 (en) * 1994-06-22 1996-07-24 Baeumer Josef B & B Maschinenb Method of making a bag by folding a block bottom in one or both ends
CN109624400A (en) * 2018-12-29 2019-04-16 佛山市达肯包装机械有限公司 The drive mechanism of impression device

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