US2779144A - Method of making pouches - Google Patents

Method of making pouches Download PDF

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Publication number
US2779144A
US2779144A US32507552A US2779144A US 2779144 A US2779144 A US 2779144A US 32507552 A US32507552 A US 32507552A US 2779144 A US2779144 A US 2779144A
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United States
Prior art keywords
tube
pouch
flap
lines
blank
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Walter P Nail
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Individual
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Classifications

    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F23/00—Cases for tobacco, snuff, or chewing tobacco
    • A24F23/02—Tobacco pouches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/431—Joining the articles to themselves
    • B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/137—Beaded-edge joints or bead seals
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S383/00—Flexible bags
    • Y10S383/903—Stress relief

Definitions

  • This invention relates to improvements in the manufacture of pouches and like containers.
  • the principal object of the invention is to reduce the number of seams required to produce the pouch to a single seam of simplicity and economy of manufacture and strength in the finished pouch.
  • Another important object is to eliminate all wastage of material in the blanking out of the pouch form.
  • Still another object is to provide a pouch which will eliminate tearing at the join between the flap and the body portions.
  • the principal feature of the invention resides in blanking out the pouch forms or the like by severing a tube along transverse sever lines each of which defines a pouch end-forming formation on each side thereof, the body of the pouch form or blank being constituted by the tube between the end formations whereby blanks are formed from said tube without wastage of the material thereof.
  • a further important feature resides therefore in shaping the line of severance defining the flap portions as a line of opposite symmetry on opposite sides of the axis of the tube whereby the axially extending excess material on one side of the axis forms the flap on one piece of severed tubing and the excess on the opposite side of the axis forms the flap on another piece of tubing cut by the severing line.
  • Still a further feature resides in shaping the flap-forming line of severance to provide a rounded edge joining the flap to the front of the pouch body formed by the tube length between lines of sever to provide a resistance to tear.
  • Figure 1 is a plan view of a length of tubing showing the manner in which it is severed to produce blanks in the formation of a pouch in accordance with the inventron.
  • Figure 2 is a perspective view of one of the blanks cut from the tube of Figure 1 in an opened-out state.
  • Figure 3 is a front elevational view of the blank showing the bottom edge ready to be sealed.
  • Figure 4 is a view similar to Figure 3 but showing the bottom edge sealed.
  • Figure 5 is a view of the completed pouch packed with material to be dispensed therein and with a temporary seal across the mouth of the pouch.
  • Figure 6 is an end view of the pouch of Figure 5 with the flap folded down over the body.
  • Figure 7 is a plan view of a length of tubing showing an alternative form of blank.
  • Figure 8 is an elevational view of a pouch formed from the blanks of Figure 7.
  • Figure 10 is a rear elevational view of a pouch formed from the blank of Figure 9.
  • Figure 11 shows still a further tube blanking
  • Figure 12 illustrates the open pouch afforded by the blankmg.
  • 1 represents a tube of material, preferably a thin pliable heat-scalable plastic, e. g., polyethylene or the like, which may be transparent or colcured.
  • a thin pliable heat-scalable plastic e. g., polyethylene or the like, which may be transparent or colcured.
  • the tube 1 is then cut at spaced intervals along the transverse sever lines 2 and between the lines of sever 2 along sever lines 3 which comprise symmetrically disposed transverse portions 4 connected by rounded knees S to an axially extending portion 6.
  • sever lines 3 have opposite symmetry on either sides of a line 77 mid-way between the sever lines 2 and have opposite symmetry on opposite sides of the tube axis 8-8.
  • the symmetry of the sever lines 3 provides the flapforming portions 10 on the tube lengths 9 between adjacent sever lines 2 without wastage of any of the material of the tube.
  • Figure 2 illustrates the blank 9 in a somewhat open form and Figure'3 illustrates the blank fully opened up to pouch formation with the sever line 2 defining the bottom edge of the pouch.
  • Figure 4 shows the bottom edge 2 sealed as at 11, preferably by means of a heat seal to complete the pouch formation.
  • the pouch may then be filled with material, such as tobacco 12 Figure 5, and a relatively weak seal 13 applied across the mouth of the pouch to seal the contents from the atmosphere.
  • the flap 10 may then be folded over as illustrated in Figure 6.
  • the entire material of the tube is utilized to form the blank without wastage, and the knees 5 of the sever lines 3 provide a curving tear-resistant juncture between the flap 10 and body portion 9.
  • This curve formation pull on the front of the pouch body 9 is transferred over an extended length of the juncture of the flap with the pouch body and is not concentrated at the cornet to the same extent that occurs in conventional pouch constructions which normally split at this point.
  • the tube 1' is severed along transverse lines 14 at spaced points, with the lines 14 having an otfset 15 at the axis of the tube to provide a bottom forming flap 16 as shown in Figure 8.
  • the sever line 17 between the lines 14 has a difierent shape than the line 3 and again is of opposite symmetry on opposite sides of the tube axis to provide the flap portion 18, Figure 8.
  • the bottom flap 16 may be sealed or secured in any known way but the preferable method is to effect a heat seal along this edge.
  • the tube 1 is shown provided with spaced transverse sever lines 20 corresponding to lines 2 of Figure 1 to define the bottom edge of the pouch, and between these sever lines the sever lines 21 corresponding to the lines of severance 3 of Figure 1.
  • cuts 22 which terminate in enlarged orifices 23.
  • a blank corresponding to the blank of Figure 2 is formed from which the pouch may be made and in the back of this pouch the cuts 22 and orifices 23 define a dispensing slot for tissues and the like where the rounded ends 23' of the slot cause an oven turning of the tissue being dispensed.
  • Figure 11 illustrates afurther modification of the invention wherein a blank 24 is provided by. cutting 'tube 25 without wastage of the material of the tube, and this blank in its state of Figure 12 may be considered as an open pouch and it will be appreciated that the end extensions 26 can be folded over, the one to define a bottom to the pouch and the other to form a flap.
  • a method of forming pouches which comprises transversely cutting a tube'of heat-scalable material while in a flat state with linear cuts extending perpendicular to the tube axis and between each pair of linear cuts, compoundly cutting said tube along a compound line having opposite symmetry on opposite sides of both the axis of the tube and a line transverse the tube axis and forming a median line between said pair of linear cuts, opening out each tube length defined between a linear and a compound cut and refolding same to bring the original fold edges centrally of the width of the refolded tube length,
  • a method of forming pouches which comprises transversely cutting a tube of material while in a flattened state with linear cuts extending perpendicularly to the tube axis and between each pair of linear cuts compoundly cutting said tube along a compound line having substantially opposite symmetry on opposite sides of the axis of the tube and a line transversely of the tube, opening out each tube length defined between a linear and a compound cut and refolding same to bring the original fold edges centrally of the width of the refolded tube length, closing each refolded tube length along the end defined by the linear cut to form said tube length into an open pouch, the end defined by the compound cut providing a flap for closing said open pouch.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)

Description

Jan. 29, 1957 w. P. NAIL 2,779,144
METHOD OF MAKING POUCHES Filed Dec. 10, 1952 1 I l f// %5 l U i swesPeemQ."
METHOD OF MAKING POUCHES Walter P. Nail, Toronto, Ontario, Canada Application December 10, 1952, Serial No. 325,075
4 Claims. (CI. 53-49) This invention relates to improvements in the manufacture of pouches and like containers. The principal object of the invention is to reduce the number of seams required to produce the pouch to a single seam of simplicity and economy of manufacture and strength in the finished pouch.
Another important object is to eliminate all wastage of material in the blanking out of the pouch form.
Still another object is to provide a pouch which will eliminate tearing at the join between the flap and the body portions.
The principal feature of the invention resides in blanking out the pouch forms or the like by severing a tube along transverse sever lines each of which defines a pouch end-forming formation on each side thereof, the body of the pouch form or blank being constituted by the tube between the end formations whereby blanks are formed from said tube without wastage of the material thereof.
More particularly it is contemplated to sever the tube in a manner to provide pairs of oppositely disposed pouch blanks having bottom and flap-forming formations with the bottom-forming formations of the blank pairs being spaced apart and the flap-forming formations of the blank pairs being contiguous, interfitting and oppositely disposed.
A further important feature resides therefore in shaping the line of severance defining the flap portions as a line of opposite symmetry on opposite sides of the axis of the tube whereby the axially extending excess material on one side of the axis forms the flap on one piece of severed tubing and the excess on the opposite side of the axis forms the flap on another piece of tubing cut by the severing line.
Still a further feature resides in shaping the flap-forming line of severance to provide a rounded edge joining the flap to the front of the pouch body formed by the tube length between lines of sever to provide a resistance to tear.
Referring to the accompanying drawings,
Figure 1 is a plan view of a length of tubing showing the manner in which it is severed to produce blanks in the formation of a pouch in accordance with the inventron.
Figure 2 is a perspective view of one of the blanks cut from the tube of Figure 1 in an opened-out state.
Figure 3 is a front elevational view of the blank showing the bottom edge ready to be sealed.
Figure 4 is a view similar to Figure 3 but showing the bottom edge sealed.
Figure 5 is a view of the completed pouch packed with material to be dispensed therein and with a temporary seal across the mouth of the pouch.
Figure 6 is an end view of the pouch of Figure 5 with the flap folded down over the body.
Figure 7 is a plan view of a length of tubing showing an alternative form of blank.
Figure 8 is an elevational view of a pouch formed from the blanks of Figure 7.
2,779,144 I Patented Jan. 29, 1957 Figure 9 is a view similar to Figure 7 but showing still a further modified form of blanking.
Figure 10 is a rear elevational view of a pouch formed from the blank of Figure 9.
Figure 11 shows still a further tube blanking, and Figure 12 illustrates the open pouch afforded by the blankmg.
Referring to Figure 1, 1 represents a tube of material, preferably a thin pliable heat-scalable plastic, e. g., polyethylene or the like, which may be transparent or colcured.
The tube 1 is then cut at spaced intervals along the transverse sever lines 2 and between the lines of sever 2 along sever lines 3 which comprise symmetrically disposed transverse portions 4 connected by rounded knees S to an axially extending portion 6. Thus the sever lines 3 have opposite symmetry on either sides of a line 77 mid-way between the sever lines 2 and have opposite symmetry on opposite sides of the tube axis 8-8.
These sever lines divide the tube into individual blanks 9 with each blank having an excess of material 10 adapted to constitute a flap on one side of the axis 8--8 extending axially beyond the body of the blank 9 on the opposite side of the axis.
The symmetry of the sever lines 3 provides the flapforming portions 10 on the tube lengths 9 between adjacent sever lines 2 without wastage of any of the material of the tube.
Figure 2 illustrates the blank 9 in a somewhat open form and Figure'3 illustrates the blank fully opened up to pouch formation with the sever line 2 defining the bottom edge of the pouch.
Figure 4 shows the bottom edge 2 sealed as at 11, preferably by means of a heat seal to complete the pouch formation. The pouch may then be filled with material, such as tobacco 12 Figure 5, and a relatively weak seal 13 applied across the mouth of the pouch to seal the contents from the atmosphere. The flap 10 may then be folded over as illustrated in Figure 6.
It will be seen that with the pouch blanked from a tubular form the single seam 11 only is required to complete the pouch formation, greatly simplifying the handling and decreasing the cost of manufacture.
Additionally the entire material of the tube is utilized to form the blank without wastage, and the knees 5 of the sever lines 3 provide a curving tear-resistant juncture between the flap 10 and body portion 9. With this curve formation pull on the front of the pouch body 9 is transferred over an extended length of the juncture of the flap with the pouch body and is not concentrated at the cornet to the same extent that occurs in conventional pouch constructions which normally split at this point.
In the modified form of the invention shown in Figure 7, the tube 1' is severed along transverse lines 14 at spaced points, with the lines 14 having an otfset 15 at the axis of the tube to provide a bottom forming flap 16 as shown in Figure 8. The sever line 17 between the lines 14 has a difierent shape than the line 3 and again is of opposite symmetry on opposite sides of the tube axis to provide the flap portion 18, Figure 8. The bottom flap 16 may be sealed or secured in any known way but the preferable method is to effect a heat seal along this edge.
In Figure 9 the tube 1 is shown provided with spaced transverse sever lines 20 corresponding to lines 2 of Figure 1 to define the bottom edge of the pouch, and between these sever lines the sever lines 21 corresponding to the lines of severance 3 of Figure 1. In addition, extending in from the edge of the tube are cuts 22 which terminate in enlarged orifices 23.
With this arrangement a blank corresponding to the blank of Figure 2 is formed from which the pouch may be made and in the back of this pouch the cuts 22 and orifices 23 define a dispensing slot for tissues and the like where the rounded ends 23' of the slot cause an oven turning of the tissue being dispensed.
Figure 11 illustrates afurther modification of the invention wherein a blank 24 is provided by. cutting 'tube 25 without wastage of the material of the tube, and this blank in its state of Figure 12 may be considered as an open pouch and it will be appreciated that the end extensions 26 can be folded over, the one to define a bottom to the pouch and the other to form a flap.
It will be understood that other various forms of blanks may be provided by altering the configuration of the severance lines without departing from the invention.
What 5 claim as my invention is:
1. A method of forming pouches which comprises transversely cutting a tube'of heat-scalable material while in a flat state with linear cuts extending perpendicular to the tube axis and between each pair of linear cuts, compoundly cutting said tube along a compound line having opposite symmetry on opposite sides of both the axis of the tube and a line transverse the tube axis and forming a median line between said pair of linear cuts, opening out each tube length defined between a linear and a compound cut and refolding same to bring the original fold edges centrally of the width of the refolded tube length,
posite symmetry on opposite sides of both the axis of the tube and a line transverse the tube axis and forming a median line between said pair of linear cuts to form pouch flap forming formation having an axial extent at one side of the tube axis substantially as great as'the length of the tube between said compound cut and the adjacent linear cut at the other side of the tube axis, opening out each tube length defined between a linear and a compound cut and refolding same to bring the original fold edges centrally of the width of the refolded tube length, heatsealing each refolded tube length along the end defined by the linear cut to form such tube length into an open pouch, the flap formation defined by said compound out being adapted to close said open pouch.
3. A method as claimed in claim 2 in which said open pouch is filled with a material to be protected and said flap formationis moved to close said open pouch and is heat-sealed in pouch-closing relation with a seal relatively weaker than the seal along the end defined by the linear cut.
4. A method of forming pouches which comprises transversely cutting a tube of material while in a flattened state with linear cuts extending perpendicularly to the tube axis and between each pair of linear cuts compoundly cutting said tube along a compound line having substantially opposite symmetry on opposite sides of the axis of the tube and a line transversely of the tube, opening out each tube length defined between a linear and a compound cut and refolding same to bring the original fold edges centrally of the width of the refolded tube length, closing each refolded tube length along the end defined by the linear cut to form said tube length into an open pouch, the end defined by the compound cut providing a flap for closing said open pouch.
References Cited in the file of this patent UNITED STATES PATENTS 259,238 Stocking June 6, 1882 2,095,910 Bergstein Oct. 12, 1937 2,106,431 Jones Jan. 25, 1938 2,186,124 Rash Ian. 9, 1940 2,265,075 Kneutter Dec. 2, 1941 2,442,091 Mann May 25, 1948
US32507552 1952-12-10 1952-12-10 Method of making pouches Expired - Lifetime US2779144A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3069825A (en) * 1960-11-01 1962-12-25 Earl C Killmer Apparatus for packing shrub roots
US3148489A (en) * 1959-11-19 1964-09-15 British Xylonite Co Ltd Method of producing a filled package
US3161347A (en) * 1962-08-20 1964-12-15 Gilbert H Hannon Bag package
US3355854A (en) * 1964-05-18 1967-12-05 Lowry Dev Corp Method of making a dispenser package
US5184725A (en) * 1991-03-25 1993-02-09 Vp-Schickedanz Ag Reclosable package for cellulose tissues
US6126317A (en) * 1999-08-11 2000-10-03 Pac One, Inc. Configuration resisting tear propagation in container sidewall
US20090173740A1 (en) * 2008-01-08 2009-07-09 Ferguson Roy G Flexible cover for produce container

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US259238A (en) * 1882-06-06 stocking
US2095910A (en) * 1936-07-08 1937-10-12 Edna May Bergstein Method of forming containers
US2106431A (en) * 1933-08-22 1938-01-25 Robinson E S & A Ltd Manufacture of paper or like bag tubes or bags
US2186124A (en) * 1936-09-12 1940-01-09 Du Pont Laminated structure and method for making the same
US2265075A (en) * 1939-12-06 1941-12-02 Thomas M Royal & Company Method of making bags
US2442091A (en) * 1946-05-18 1948-05-25 Breslee Mfg Company Pouch and method of making the same

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US259238A (en) * 1882-06-06 stocking
US2106431A (en) * 1933-08-22 1938-01-25 Robinson E S & A Ltd Manufacture of paper or like bag tubes or bags
US2095910A (en) * 1936-07-08 1937-10-12 Edna May Bergstein Method of forming containers
US2186124A (en) * 1936-09-12 1940-01-09 Du Pont Laminated structure and method for making the same
US2265075A (en) * 1939-12-06 1941-12-02 Thomas M Royal & Company Method of making bags
US2442091A (en) * 1946-05-18 1948-05-25 Breslee Mfg Company Pouch and method of making the same

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3148489A (en) * 1959-11-19 1964-09-15 British Xylonite Co Ltd Method of producing a filled package
US3069825A (en) * 1960-11-01 1962-12-25 Earl C Killmer Apparatus for packing shrub roots
US3161347A (en) * 1962-08-20 1964-12-15 Gilbert H Hannon Bag package
US3355854A (en) * 1964-05-18 1967-12-05 Lowry Dev Corp Method of making a dispenser package
US5184725A (en) * 1991-03-25 1993-02-09 Vp-Schickedanz Ag Reclosable package for cellulose tissues
US6126317A (en) * 1999-08-11 2000-10-03 Pac One, Inc. Configuration resisting tear propagation in container sidewall
US20090173740A1 (en) * 2008-01-08 2009-07-09 Ferguson Roy G Flexible cover for produce container
US8746481B2 (en) * 2008-01-08 2014-06-10 Roy G Ferguson Flexible cover for produce container

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