US20070092164A1 - Bag with a gas filling compartment, method for manufacturing the same, method for sealing gas in the same and method for packaging the same - Google Patents

Bag with a gas filling compartment, method for manufacturing the same, method for sealing gas in the same and method for packaging the same Download PDF

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Publication number
US20070092164A1
US20070092164A1 US11/585,727 US58572706A US2007092164A1 US 20070092164 A1 US20070092164 A1 US 20070092164A1 US 58572706 A US58572706 A US 58572706A US 2007092164 A1 US2007092164 A1 US 2007092164A1
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United States
Prior art keywords
bag
films
gas
gas filling
filling compartment
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.)
Abandoned
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US11/585,727
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English (en)
Inventor
Masanori Yasuhira
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Toyo Jidoki Co Ltd
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Toyo Jidoki Co Ltd
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Filing date
Publication date
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Assigned to TOYO JIDOKI CO., LTD. reassignment TOYO JIDOKI CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: YASUHIRA, MASANORI
Publication of US20070092164A1 publication Critical patent/US20070092164A1/en
Priority to US13/675,876 priority Critical patent/US8661772B2/en
Abandoned legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B55/00—Preserving, protecting or purifying packages or package contents in association with packaging
    • B65B55/20—Embedding contents in shock-absorbing media, e.g. plastic foam, granular material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17B—GAS-HOLDERS OF VARIABLE CAPACITY
    • F17B1/00—Gas-holders of variable capacity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/02—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage
    • B65D81/03—Wrappers or envelopes with shock-absorbing properties, e.g. bubble films

Definitions

  • the present invention relates to a bag with a gas filling compartment made of an inner bag and an outer bag having a gas filled in between the inner bag and the outer bag to protect the contents packaged inside the inner bag from shock or the like and also relates to a manufacturing method of such a bag and further to a gas filling method in such a bag and a packaging method for such a bag.
  • Bag with a gas filling compartment comprising an outer bag and an inner bag that is provided inside the outer bag, made so that a gas is filled in between the inner bag and the outer bag, are commonly known and disclosed in, for instance, Japanese Utility Model Application Laid-Open (Kokai) Nos. 64-2745 and 8-1398; Japanese Patent Application Laid-Open (Kokai) Nos. 64-84869, 2-98563 and 9-132213; and Japanese Patent Nos. 2800034 and 3015323
  • conventional bag with a gas filling compartment does not have a structure suitable for automating the process of sealing gas into the bas filling spaces or for automating the entire packaging process including such a gas sealing process, and the gas sealing process disclosed in, for instance, Japanese Utility Model Application Laid-Open (Kokai) 8-1398 is also not suitable for being automated.
  • a unique structure of the present invention for a bag that has a gas filling compartment and is made of an outer bag and an inner bag which is provided inside of and is substantially equal in width to the outer bag; and in this bag:
  • the inner bag has an opening along an upper edge thereof
  • films of the inner bag and films of the outer bag are sealed together, on each side of respective bags, along upper edges thereof, and further both lateral side edges and lower edges of the films of the inner bag and the films of the outer bag are sealed together, thus forming gas filling compartments between the films of the inner bag and the films of the outer bag;
  • the films of the outer bag and the films of the inner bag are sealed together in the vicinity of the means for introducing gas, and sealed portions thereof surround peripheries of the means for introducing gas, leaving gas flow paths communicating to insides of the gas filling compartments.
  • the above-described means for introducing gas be formed either in the vicinity of the upper edge sides or in the vicinity of the lateral side edges of the films of the outer bag, and it is particularly preferable that they be formed in the vicinity of the upper edge side comers on mutually opposite sides.
  • a supplemental sealed portion is formed by sealing a part of the films of the outer bag and a part of the films of the inner bag;
  • the supplemental sealed portion and an upper edge sealed portion and/or one of lateral side edge sealed portions form the above-described sealed portions that surround the periphery of said means for introducing gas.
  • the supplemental sealed portion be formed so as to be continuous to the upper edge sealed portion and/or one of the lateral side edge sealed portions.
  • a bag that has a gas filling compartment and is made of an outer bag and an inner bag which is provided inside of and is smaller in width than the outer bag; and in this bag:
  • the inner bag has an opening along an upper edge thereof
  • films of the inner bag and films of the outer bag are sealed together, on each side of respective bags, along upper edges thereof, the films of the inner bag and the films of the outer bags are sealed together along lower edges thereof, and further the films of the outer bag are sealed together at upper and lower edges thereof on both lateral sides of the inner bag and along both lateral side edges thereof, thus forming a gas filling compartment between the films of the inner bag and outer bag;
  • a means for introducing gas is formed in at least one side of the outer bag
  • the films of the outer bag are sealed together in the vicinity of the means for introducing gas, and sealed portions thereof surround a periphery of the means for introducing gas, leaving a gas flow path communicating to inside of the gas filling compartment.
  • the above-described means for introducing gas be formed in the vicinity of the upper edge sides or in the vicinity of the lateral side edge sides, and it is more preferable that they be formed in the vicinity of the upper edge side comers.
  • a supplemental sealed portion is formed by sealing a part of the films of the outer bag.
  • the supplemental sealed portion and one of upper edge sealed portions formed by films of the outer bag and/or one of lateral side edge sealed portions of the outer bag form the above-described sealed portions that surround the periphery of said means for introducing gas.
  • the supplemental sealed portions ares formed so as to be continuous to the upper edge sealed portions or one of the lateral side edge sealed portions.
  • the sealing of the means for introducing gas is effected by sealing two surfaces of the bag at the location of the means for introducing gas.
  • the cut-ins or holes are formed in the vicinity of the upper edge side corner, when the bag mouth is sealed from both surfaces at the end of the packaging process, the cut-ins or holes can be sealed at the same time as the sealing of the bag mouth, and it is preferable that that be done in that way.
  • the above objects are further accomplished by unique steps of the present invention for a method for packaging a bag having a gas filling compartment; and in the present invention, the method uses, for instance, a commonly known rotary type packaging apparatus and endless track type packaging apparatus in which bags, held at both lateral side edges thereof by grippers and suspended, are continuously or intermittently conveyed, and, during the course of the conveyance, various packaging processes including bag mouth opening, filling the bag with contents to be packaged, and bag mouth sealing are successively performed; and further, in the present invention,
  • the process for sealing gas in the gas filling compartment of the bag is executed after the process for filling the inner bag with contents to be packaged;
  • the process for sealing gas includes the steps of:
  • FIG. 1 ( a ) is a schematic front elevational view of a bag with a gas filling compartment according to the present invention, FIG. 1 ( b ) being a top view thereof, and FIG. 1 ( c ) being a sectional view thereof;
  • FIG. 2 ( a ) is a schematic side elevational view of the overall manufacturing method of the bag with a gas filling compartment, and FIG. 2 ( b ) being a top view of a part thereof;
  • FIG. 3 ( a ) is a schematic side elevational view of another overall manufacturing method of the bag with a gas filling compartment, and FIG. 3 ( b ) being a top view of a part thereof;
  • FIG. 4 ( a ) is a schematic side elevational view of still another overall manufacturing method of the bag with a gas filling compartment, and FIG. 4 ( b ) being a top view of a part thereof;
  • FIGS. 5 ( a ) through 5 ( d ) shows the steps of a gas seal-in method and packaging method of the present invention for the bag with a gas filling compartment;
  • FIGS. 6 ( e ) through 6 ( g ) show the step continuing from the step of FIG. 5 ( d );
  • FIGS. 7 ( a ) through 7 ( c ) are front elevational views, respectively, of the filling step position for the contents to be packaged, the gas filling step position, and the bag mouth sealing step position in the gas seal-in method and packaging method;
  • FIG. 8 illustrates how the gas filling is done by an air (gas) blow-in nozzle
  • FIG. 9 ( a ) is a schematic front elevational view of another bag having a gas filling compartment according to the present invention, FIG. 9 ( b ) being a top view thereof, and FIG. 9 ( c ) being a sectional view thereof;
  • FIG. 10 ( a ) is a schematic front elevational view of still another bag having a gas filling compartment according to the present invention, FIG. 10 ( b ) being a top view thereof, and FIG. 10 ( c ) being a sectional view thereof; and
  • FIG. 11 ( a ) is a schematic front elevational view of still another bag having a gas filling compartment according to the present invention, FIG. 11 ( b ) being a top view thereof, and FIG. 11 ( c ) being a sectional view thereof.
  • FIGS. 1 ( a ) through 1 ( c ) a bag with a gas filling compartment 1 is shown.
  • the bag 1 comprises an inner bag 2 and an outer bag 3 of the substantially same width, the bag mouth (opening) A of the inner bag 2 is open.
  • the films 4 and 5 of the inner bag 2 and films 6 and 7 of the outer bag 3 are sealed together along the upper edges thereof on each side of the respective bags (in other words, the adjacent film 4 of the inner bag 2 and film 6 of the outer bag 3 both on one side are sealed together to form a sealed portion 8 , and the adjacent film 5 of the inner bag 2 and film 7 of the outer bag 3 both on another side are sealed together to form a sealed portion 9 ), along the upper edge B of the bag 1 .
  • These sealed portions 8 and 9 are indicated by crosshatching in FIG. 1 ( a ).
  • a gas filling compartment (air bag) 14 is formed between the film 4 of the inner bag 2 and the film 6 of the outer bag 3 and a gas filling compartment (air bag) 15 is formed between the film 5 of the inner bag 2 and the film 7 of the outer bag 3 .
  • the gas filling compartments 14 and 15 are not distended; accordingly, the bag is shown with no gaps between the films 4 and 6 or between the films 5 and 7 .
  • a supplemental sealed portion 16 is formed, to be connected to the sealed portion 8 , of a prescribed length in the longitudinal direction, wherein, as in the sealed portion 8 , a part of the film 4 of the inner bag 2 and a part of the film 6 of the outer bag 3 are sealed together; and further, in the vicinity of the upper edge comer on the opposite side, a supplemental sealed portion 17 is formed, to be connected to the sealed portion 9 , in the longitudinal direction, wherein, as in the sealed portion 9 , a part of the film 5 of the inner bag 2 and a part of the film 7 of the outer bag 3 are sealed together.
  • supplemental sealed portion 16 and 17 is used here. Furthermore, in the supplemental sealed portion 16 , only a part of the film 4 of the inner bag 2 and a part of the film 6 of the outer bag 3 are sealed, while, in the supplemental sealed portion 17 , a part of only the film 5 of the inner bag 2 and the film 7 of the outer bag 3 are sealed; however, the functions of the auxiliary seals can be effected even if respective parts of all of the films 4 to 7 in the inner bag 2 and outer bag 3 are sealed, in the two supplemental sealed portions 16 and 17 . In that case, however, the interior of the inner bag 2 would become substantially narrower.
  • circular arc-shaped cut-ins 18 and 19 for gas blow-in are formed, respectively, in the surfaces of the films 6 and 7 in the outer bag 3 .
  • the cut-in 18 has its vicinity surrounded, above by the sealed portion 8 , to the inside in the width direction by the supplemental sealed portion 16 , and to the outside in the width direction by the sealed portion 11 (at which sealed portion 11 , the film 4 of the inner bag 2 and the film 6 of the outer bag 3 are of course sealed together); while the cut-in 19 has its vicinity surrounded, above by the sealed portion 9 , to the inside in the width direction by the supplemental sealed portion 17 , and to the outside in the width direction by the sealed portion 12 (at which sealed portion 12 , the film 5 of the inner bag 2 and the film 7 of the outer bag 3 are of course sealed together); thus leaving an unsealed part only below, respectively, that is, leaving and forming gas flow paths 21 and 22 that communicate with the inside of the gas filling compartments 14 and 15 . Accordingly, gas blown into the bag 1 from the cut-ins 18 and 19 enters into the gas filling compartments 14 and 15 through the gas flow paths 21 and 22 .
  • tubular films 25 and 26 On two source rolls 23 and 24 are wound tubular films 25 and 26 , respectively, folded in a two-ply stacked condition (in a condition wherein they are mashed flat).
  • the tubular films 25 and 26 in the folded condition, are paid out continuously by feed rollers 27 and, from guide rollers 28 on, are conveyed intermittently, one bag-length at a time, and are successively subjected to such operations as the following:
  • Cut-ins 18 and 19 are formed in the surfaces that become the films 6 and 7 of the outer bag 3 .
  • a backing member 32 (see FIG. 2 ( b )) equipped with a cutter 31 is, from the downstream side of the cutter 31 , inserted and positioned between the upper and lower films, so that a punch 33 installed above advances and retracts relative to that backing member 32 , thus forming the cut-in 18 .
  • the same operation is performed with inverted (up-down) symmetry, and the cut-in 19 is formed.
  • the tubular films 25 and 26 are sealed and the sealed portions 11 and 12 are formed.
  • a sealing mechanism (indicated only by a pair of hot plates 39 ) is set between the guide rollers 36 and 38 , where the films are held by the hot plates 39 .
  • the tubular films 25 and 26 are sealed and the sealed portion 13 is formed.
  • a sealing mechanism (indicated only by a pair of hot plates 42 ) is set between the guide rollers 38 and feed rollers 41 , where the films are held by the hot plates 42 .
  • the formed bag with a gas filling compartment 1 is cut away from the ends of the tubular films 25 and 26 .
  • a cutter device 43 is set beyond the feed rollers 41 .
  • the supplemental sealed portions 16 and 17 are formed after the sealed portions 8 and 9 are formed, but this order may be reversed; and the sealed portions 8 and 9 and supplemental sealed portions 16 and 17 can also be formed in a one-time operation.
  • the sealed portion 13 is formed after the sealed portions 11 and 12 are formed, but this order may be reversed, and the sealed portions 11 to 13 can also be formed in a one-time operation. The important thing is that the sealed portions 8 and 9 and the supplemental sealed portions 16 and 17 are formed before the tubular films 25 and 26 are stacked together, and the sealed portions 11 to 13 are formed after such stacking together.
  • FIGS. 3 ( a ) and 3 ( b ) Another example of the manufacturing method of the bag 1 is shown in FIGS. 3 ( a ) and 3 ( b ).
  • the same symbols are used to designate parts that are substantially the same as in FIGS. 2 ( a ) and 2 ( b ).
  • films 46 and 47 are paid out continuously by feed rollers 27 and, from guide rollers 28 on, are conveyed intermittently, one bag-length at a time, during which time they are successively subjected to such operations as the following:
  • the films are folded double in the longitudinal direction.
  • a triangular plate 49 is set, as film double-folding means, between the source roll 44 and the guide rollers 48 .
  • the film 47 also is folded double in the same way.
  • Cut-ins 18 and 19 are formed in the surfaces that are to become the films 6 and 7 of the outer bag 3 .
  • a backing member 32 is inserted and positioned between the upper and lower films, so that a punch 33 disposed above advances and retracts relative to that backing member 32 , thus forming the cut-in 18 .
  • the same operation is performed with inverted symmetry, and the cut-in 19 is formed.
  • FIGS. 4 ( a ) and 4 ( b ) Yet another example of the manufacturing method of the bag 1 is shown in FIGS. 4 ( a ) and 4 ( b ).
  • the same symbols are used to designate parts that are substantially the same as in FIGS. 3 ( a ) and 3 ( b ).
  • films 46 and 47 are paid out continuously by feed rollers 27 and, from guide rollers 28 on, are conveyed intermittently, one bag-length at a time, during which time they are successively subjected to such operations as the following:
  • Cut-ins 18 and 19 and formed at two locations in the film 47 (films that become the films 6 and 7 in the outer bag 3 ). Pairs of punches 33 and backing members 32 are set between the guide rollers 28 and 51 , the punches 33 advance and retract relative to the backing members 32 , and cut-ins 18 and 19 are formed at two locations, diagonally across from each other, in the vicinities of the left and right edges of the film 47 . These formation locations are positions corresponding to the upper edge side corner vicinities on mutually opposite sides of the films 6 and 7 of the outer bag 3 of the bag with a gas filling compartment 1 , as shown in FIGS. 1 ( a ) through 1 ( c ).
  • the films 46 and 47 are stacked together, folded double in the longitudinal direction to make a four-ply stack, such that the film 47 is on the outside and the film 46 is on the inside.
  • a triangular plate 54 is set, as film double-folding means, between a guide roller 52 and guide rollers 53 .
  • the outside films and the inside films are sealed together, on respective either side thereof (more specifically, the outside film and the inside film on one side of the four-ply stack are sealed together, and the outside film and the inside film on another side of the four-ply stack are also sealed together), forming the upper edge sealed portions 8 and 9 and the supplemental sealed portions 16 and 17 .
  • a sealing mechanism (only its pair of hot plates 55 and 56 and a hot plate backing plate 57 inserted and positioned, corresponding to the hot plates 55 and 56 , between the inside films are shown) is set between the guide rollers 53 and guide rollers 41 .
  • the hot plates 55 and 56 advance and retract relative to the hot plate backing plate 57 , the respectively adjacent inside films and outside films are held by the hot plates 55 and 56 and the hot plate backing plate 57 (with the two plies on the right side facing the downstream ends of the four-ply stacked films being held by the hot plate 55 and the hot plate backing plate 57 , and the two plies on the left side facing the downstream ends of the four-ply stacked films being held by the hot plate 56 and the hot plate backing plate 57 ), and thereby the upper edge sealed portions 8 and 9 and the supplemental sealed portions 16 and 17 are formed simultaneously.
  • the four-ply stacked films are sealed and the sealed portions 11 to 13 at the two lateral side edges and at the lower edge respectively are formed.
  • a sealing mechanism (only its pair of hot plates 58 thereof is shown) is set between the guide rollers 53 and guide rollers 41 and on the downstream side of the hot plate 55 and other parts, the hot plates 58 advance and retract relative to the four-ply stacked films, and the four-ply stacked films are held together.
  • a seal cooling mechanism (indicated only by a pair of cooling plates 59 ) is set between the guide rollers 53 and the guide rollers 41 , on the downstream side of the hot plates 58 , the cooling plates 59 advance and retract relative to the four-ply stacked films, and hold and cool the locations sealed by the hot plates 58 .
  • the sealed portions 8 and 9 and the supplemental sealed portions 16 and 17 are formed in a one-time operation, but the supplemental sealed portions 16 and 17 can be formed after the sealed portions 8 and 9 are formed, or, alternatively, the sealed portions 8 and 9 can also be formed after the supplemental sealed portions 16 and 17 are formed.
  • the sealed portions 11 to 13 are formed in a one-time operation, but the sealed portion 13 can be formed after the sealed portions 11 and 12 are formed, or, alternatively, the sealed portions 11 and 12 can also be formed after the sealed portion 13 is formed.
  • the sealed portions 8 and 9 and the supplemental sealed portions 16 and 17 are formed after folding the two stacked-together films 46 and 47 to make a four-ply stack, but the upper edge sealed portions and supplemental sealed portions may also be formed one at a time on the left and right sides of the two films 46 and 47 , to make a total of two, after stacking the two films 46 and 47 together but before folding them double in the longitudinal direction to make a four-ply stack.
  • FIGS. 1 ( a ) through 1 ( c ) a method for manufacturing a product bag with a gas filling compartment with, for instance, a rotary type packaging apparatus using the bag with a gas filling compartment 1 show in FIGS. 1 ( a ) through 1 ( c ) is described with reference to FIG. 5 to 7 .
  • a plural number of pairs of grippers is set at equal intervals about the periphery of a table that turns intermittently, bags are supplied to the grippers, the edges at the two sides of the bags are gripped by the grippers, held suspended, and then moved along intermittently; and various packaging processes such as opening the bag mouths, filling the bags with the contents to be packaged, and sealing the bag mouths are successively performed at each stop position.
  • auxiliary grippers blocking grippers
  • the rotary type packaging apparatus used in the present invention differs on that point from the common rotary type packaging apparatus.
  • FIG. 7 ( a ) is a front elevational view at the position of the filling process for filling contents to be packaged 65 inside the inner bag 2 of the bag 1 (after filling).
  • auxiliary grippers 61 and 62 are closed, but, as may be understood from this figure, when the auxiliary gripper 61 is closed, the bag is held so as to bridge across the bag surfaces below the cut-in 18 , from the sealed portion 11 to the supplemental sealed portion 16 , closing the gas flow path 21 , and when the auxiliary gripper 62 is closed, the bag is held so as to bridge across the bag surfaces below the cut-in 19 , from the sealed portion 12 to the supplemental sealed portion 17 , closing the gas flow path 22 .
  • the known operations are performed up to the filling of the contents to be packaged.
  • the gas sealing-in process (comprising a gas filling process and a cut-in sealing process) of the present invention is conducted as follows:
  • FIG. 7 ( b ) another set of a blow-in nozzle 68 and backing member 69 is set at this stop position, facing in the same way, in correspondence with the cut-in 19 .
  • the blow-in nozzles 66 and 68 are energized in the forward direction by a compression spring 71 .
  • a gap develops between the films 4 and 6 configuring the gas filling compartment 14 , air (gas) is blown through the cut-in 18 into the gas filling compartment 14 , and the gas filling compartment 14 distends. Simultaneously, on the gas filling compartment 15 side also, due to the blow-in nozzle 68 and the backing member 69 , air (gas) blow-in is conducted through the cut-in 19 .
  • the blow-in gas may be a gas other than air.
  • the auxiliary grippers 61 and 62 close, holding the bag surfaces from both sides of the bag, so that the gas flow paths 21 and 22 are cut off, and the gas inside the gas filling compartments 14 and 15 is prevented from escaping to the outside through the cut-ins 18 and 19 . Then the air (gas) blow-out from the blow-in nozzles 66 and 68 (air blow-in into the gas filling compartment 14 ) is stopped.
  • the table of the rotary type packaging apparatus turns, and the grippers 63 and 64 gripping the two edges of the bag 1 stop at the next stop position (bag mouth sealing process position).
  • the bag mouth sealing operation is performed, functioning also as a cut-in sealing process.
  • a sealing mechanism (indicated only by the hot plates 72 ) for the bag mouth is set.
  • the hot plates 72 have a width in the height direction capable of covering the cut-ins 18 and 19 . When they are closed, as shown in FIG.
  • the table of the rotary type packaging apparatus is turned, and the grippers 63 and 64 gripping the two edges of the bag 1 move to the next stop position (cooling and discharge position), where, by a commonly known method, the bag mouth is held and cooled by cooling plates, the grippers 63 and 64 open during the cooling, and then the cooling plates open, and the product of bag with gas filling compartment is released and discharged.
  • the cut-ins 18 and 19 formed in the films 6 and 7 of the outer bag 3 are cut lines having no planar size, which themselves have no planar size. Ordinarily they are in a substantially closed condition, but open due to air (gas) pressure when air (gas) is blown in; and when the bag surfaces are held by the auxiliary grippers 61 and 62 and the gas flow paths 21 and 22 are cut off, and the blow-in nozzles 66 and 68 have moved back, they return to the closed condition.
  • the film 6 of the outer bag 3 wherein the cut-in 18 is formed is sealed with the film 4 of the inner bag 2
  • the film 7 of the outer bag 3 where the cut-in 19 is formed is sealed with the film 5 of the inner bag 2 (the films 4 and 5 of the inner bag 2 also being sealed together).
  • the films 6 and 7 of the outer bag 3 are sealed with the films 4 and 5 of the inner bag; accordingly, the condition becomes one wherewith, by outward appearance, the cut-ins 18 and 19 are substantially non-existent.
  • a hole can be formed instead of the cut-ins 18 and 19 ; however, as described in Japanese Patent Application Laid-Open (Kokai) No. H11-227803, when a hole is made (which forms a means for introducing gas), the melted sealant material (film) adheres to the sealing hot plates, and overruns from the hole to the periphery; accordingly, a cut-in capable of preventing such a problem is preferable.
  • FIGS. 9 ( a ) through 9 ( c ) show a bag with a gas filling compartment 75 of another embodiment of the present invention.
  • the same symbols are used to designate parts that are substantially the same as in FIGS. 1 ( a ) through 1 ( c ).
  • the bag 75 differs from the bag 1 shown in FIGS. 1 ( a ) through 1 ( c ) only in that the films 4 and 5 of the inner bag 2 are sealed together at a plurality of locations. These sealed portions function to position the contents packaged at substantially determined positions inside the inner bag 2 .
  • sealed portions 76 and 77 are formed with left and right symmetry in the longitudinal direction slightly more to the inside, in the width direction, than the sealed portions 11 and 12 at the two lateral side edges, and a sealed portion 78 is formed in the lateral direction slightly more to the inside, in the height direction, than the lower edge sealed portion 13 With these sealed portions 76 to 78 , the contents storing position in the inner bag 2 is deliminated to substantially the central area thereof, so that the contents packaged will be positioned in substantially the central area of the inner bag 2 .
  • FIGS. 9 ( a ) through 9 ( c ) the holding positions of the auxiliary grippers 61 and 62 are indicated by imaginary lines.
  • the seals for the cut-ins 18 and 19 may be made together with the bag mouth seal as in the bag 1 .
  • FIGS. 10 ( a ) through 10 ( c ) show a bag with a gas filling compartment 79 of still another embodiment of the present invention.
  • FIGS. 10 ( a ) through 10 ( c ) as well, the same symbols are used to designate parts that are substantially the same as in FIGS. 1 ( a ) through 1 ( c ).
  • a supplemental sealed portion 80 where the film 6 of the outer bag 3 and the film 4 of the inner bag 2 are sealed, is formed continuously with the sealed portion 8 along the upper edge and the sealed portion 12 at the lateral side edge.
  • a supplemental sealed portion (reference symbol omitted) where the film 7 of the outer bag 3 and the film 5 of the inner bag 2 are sealed is formed continuously with the sealed portion 9 along the upper edge and the sealed portion 11 at the lateral side edge.
  • the bag 79 differs from the bag 1 only in the form of this supplemental sealed portion 80 (and of the other supplemental sealed portion) and is the same otherwise as the bag 1 .
  • the supplemental sealed portion 80 (and the other supplemental sealed portion) of the bag 79 have the same functions as the supplemental sealed portions 16 and 17 of the bag 1 .
  • FIGS. 10 ( a ) through 10 ( c ) the holding positions of the auxiliary grippers 61 and 62 are indicated by imaginary lines.
  • the seals for the cut-ins 18 and 19 may be made together with the bag mouth seal as in the bag 1 .
  • FIGS. 11 ( a ) through 11 ( c ) show a bag with a gas filling compartment 81 of still another embodiment of the present invention.
  • the bag 81 comprises a tubular inner bag 82 and an outer bag 83 having a greater width than the inner bag 82 , with the inner bag 82 being inside the outer bag 83 .
  • the bag mouth A of the inner bag 82 is open; and, along the upper edge B of the bag 81 , the films 84 and 85 of the inner bag 82 and the films 86 and 87 of the outer bag 83 are sealed together on each side of the respective bags (in other words, the adjacent film 84 of the inner bag 82 and film 86 of the outer bag 83 both on one side are sealed together to form a sealed portion 88 , and the adjacent film 85 of the inner bag 82 and film 87 of the outer bag 83 both on another side are also sealed together to form a sealed portion 89 ).
  • the sealed portions 88 and 89 are indicated by crosshatching in FIG. 11 ( a ).
  • the films 84 and 85 of the inner bag 82 and the films 86 and 87 of the outer bag 83 are sealed together to form a sealed portion 91 .
  • This sealed portion 91 is indicated, similarly, by double crosshatching in FIG. 11 ( a ).
  • the films 86 and 87 of the outer bag 83 are sealed together.
  • the sealed portions 92 to 97 are indicated, similarly, by crosshatching in FIG. 11 ( a ).
  • a gas filling compartment 98 is formed between the inner bag 82 and the outer bag 83 .
  • FIG. 11 ( b ) it appears that two gas filling compartments are provided separately left and right. However, because the inner bag 82 and the outer bag 83 are not sealed except along the upper edge and lower edge, the left and right gas filling compartments are continuous to form a single gas filling compartment.
  • supplemental sealed portions 101 and 102 In the vicinities of the upper edge side comers of the bag 81 , supplemental sealed portions 101 and 102 , where the films 86 and 87 of the outer bag 83 are sealed together, in like manner as the sealed portions 96 and 97 , are formed, in mutual symmetry, in angled or hooked shapes, continuously with the sealed portions 96 and 97 .
  • the supplemental sealed portions 101 and 102 respectively comprise lateral portions 101 a and 102 a , which are continuous to the sealed portions 96 and 97 , and longitudinal parts 101 b and 102 b , which are continuous to the ends thereof.
  • circular arc-shaped cut-ins 103 and 104 for gas blow-in are formed, respectively, in the surfaces of the films 86 and 87 of the outer bag 83 .
  • the cut-in 103 has the vicinity thereof surrounded at the top and on the inside in the width direction by the supplemental sealed portion 101 and on the outside in the width direction by the sealed portion 96
  • the other cut-in 104 has the vicinity thereof surrounded at the top and on the inside in the width direction by the supplemental sealed portion 102 and on the outside in the width direction by the sealed portion 97 , leaving unsealed parts only downward, respectively, and thus forming gas flow paths 105 and 106 that communicate with the gas filling compartment 98 .
  • the gas blown inside the bag 81 from the cut-ins 103 and 104 passes through the gas flow paths 105 and 106 and enters inside the gas filling compartment 98 .
  • FIG. 11 ( a ) the holding positions of the auxiliary grippers 61 and 62 are shown by imaginary lines.
  • the seals for the cut-ins 103 and 104 may be made together with the bag mouth seal as in the bag 1 .
  • all of the cut-ins are formed in the vicinity of the upper edge of the bag, and the seals thereof are made together with the bag mouth seal.
  • the positions where the cut-ins are formed are not limited to the vicinity of the upper edge of the bag, and the cut-ins can also be formed at other locations.
  • the cut-ins and the sealing about the peripheries thereof can also be made independently of the bag mouth sealing.
  • the advantage is that the bag mouth sealing process can be effected so that cut-in sealing is done at the same time.
  • all of the cut-ins in the above embodiments are formed in the vicinity of the lateral side edges of the bag, because that facilitates holding the gas flow paths by the auxiliary grippers from the sides of the bag. In other words, it is preferable that the cut-ins be formed in the vicinity of the upper edge side comers of the bag.
  • only one supplemental sealed portion is formed for each cut-in or hole, but two or more supplemental sealed portions can be formed for each cut-in or hole and thereby the cut-ins or holes surrounded.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Vacuum Packaging (AREA)
  • Bag Frames (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Buffer Packaging (AREA)
  • Making Paper Articles (AREA)
US11/585,727 2005-10-25 2006-10-24 Bag with a gas filling compartment, method for manufacturing the same, method for sealing gas in the same and method for packaging the same Abandoned US20070092164A1 (en)

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JP2005310525A JP4684079B2 (ja) 2005-10-25 2005-10-25 エアバッグ付き袋及びその製造方法並びにエアバッグ付き袋への気体封入方法及びエアバッグ付き袋の包装方法

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US20160068289A1 (en) * 2014-09-05 2016-03-10 Toyo Jidoki Co., Ltd. Bag equipped with a gas channel and a method and apparatus for packaging such a bag
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US20140283483A1 (en) * 2013-03-20 2014-09-25 Toyo Jidoki Co., Ltd. Gas Charging Method and Gas Charging Apparatus For a Bag Equipped With Gas Compartment Portion
US9919822B2 (en) * 2013-03-20 2018-03-20 Toyo Jidoki Co., Ltd. Gas charging apparatus for a bag equipped with gas compartment portion
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US20210213699A1 (en) * 2014-05-13 2021-07-15 Toyo Jidoki Co., Ltd. Method and device for sealing gas in a gas compartment-equipped bag
US20150328855A1 (en) * 2014-05-13 2015-11-19 Toyo Jidoki Co., Ltd. Method and device for sealing gas in a gas compartment-equipped bag
US20160068289A1 (en) * 2014-09-05 2016-03-10 Toyo Jidoki Co., Ltd. Bag equipped with a gas channel and a method and apparatus for packaging such a bag
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JP4684079B2 (ja) 2011-05-18
US8661772B2 (en) 2014-03-04
DE602006005767D1 (de) 2009-04-30
EP1787912B1 (en) 2009-03-18
ATE425922T1 (de) 2009-04-15
EP1787912A1 (en) 2007-05-23
US20130167481A1 (en) 2013-07-04
ES2323476T3 (es) 2009-07-16
JP2007118960A (ja) 2007-05-17

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Owner name: TOYO JIDOKI CO., LTD., JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:YASUHIRA, MASANORI;REEL/FRAME:018460/0107

Effective date: 20061024

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION