US3587843A - Package of bags - Google Patents

Package of bags Download PDF

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Publication number
US3587843A
US3587843A US666855A US3587843DA US3587843A US 3587843 A US3587843 A US 3587843A US 666855 A US666855 A US 666855A US 3587843D A US3587843D A US 3587843DA US 3587843 A US3587843 A US 3587843A
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Prior art keywords
bags
bag
tape
tapes
air
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US666855A
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English (en)
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Ralph L Wing
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WR Grace and Co
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WR Grace and Co
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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
    • B65B43/00—Forming, feeding, opening or setting-up containers or receptacles in association with packaging
    • B65B43/12—Feeding flexible bags or carton blanks in flat or collapsed state; Feeding flat bags connected to form a series or chain
    • B65B43/123—Feeding flat bags connected to form a series or chain
    • 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
    • B65B43/00—Forming, feeding, opening or setting-up containers or receptacles in association with packaging
    • B65B43/26—Opening or distending bags; Opening, erecting, or setting-up boxes, cartons, or carton blanks
    • B65B43/34—Opening or distending bags; Opening, erecting, or setting-up boxes, cartons, or carton blanks by internal pressure
    • B65B43/36—Opening or distending bags; Opening, erecting, or setting-up boxes, cartons, or carton blanks by internal pressure applied pneumatically
    • 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
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/001—Blocks, stacks or like assemblies of bags

Definitions

  • the present invention relates to packaging and more particularly to a new and improved package of imbricated bags.
  • Another object of this invention is to provide a compact package of bags that will not disassemble readily by accident and yet separate readily when used in hand packaging operatrons.
  • a still further object of this invention is to provide a compact package of bags that can readily be directly joined to other similar packages of bags.
  • a package of imbricated bags in provided with a plurality of identical bags secured to two parallel strands of tape by one side to both of the tapes.
  • Each bag has one side secured to both of the tapes.
  • the open end of each bag is oriented in the same direction respecting said tapes as all of the other bags and each bag after the bottom bag relative to the tape is offset along the tapes about three-fourths inch from the adjacent bag and overlying the opening of the underlying bag.
  • the bags open to a relatively square opening when the tapes are held in parallel spaced apart disposition on a flat surface and they are inflated.
  • the tapes are spaced inwardly from the sides of each bag about one-fourth the width of the bag within a tolerance of one-eighth the width of the bag.
  • Each strand of tape has a tacky substance on one tape surface and the opposite tape surface is free oftack.
  • the tensile strength of each tape is at least 25 pounds and preferably 55 pounds.
  • the tacky substance has a tack strength when adhered to the bag sufficient to allow a pull in excess of 2 pounds to separate the bags from the tape and to hold the bags securely to said tape against a pull of less than onehalf pound when the pull is applied at an angle of 30 from the horizontal back across the chain of imbricated bags.
  • Each of the bags is flattened with two overlying sides.
  • each bag is identically dimensioned, with a concave scalloped lip edge at the open end of the bag, the two scalloped lips of each bag overlying one another and they are evenly aligned.
  • the invention is particularly useful with bags made from heat shrinkable plastic tubular film when the bottom closed end closure of the bag is formed by heat sealing.
  • the polymers of vinyl chloride, such as saran are very desira ble plastic materials for this use.
  • a slip agent or dust covering can be provided on the outer surface and inner surface of each of the bags to reduce the surface adhering properties thereof.
  • FIG. 1 is a diagrammatic top plan view of one specie of the apparatus of our invention.
  • FIG. 2 is a diagrammatic perspective view of the support table and tape pulling unit of FIG. 3 with parts broken away to show the trigger mechanism and driving means.
  • FIG. 3 is a diagrammatic side plan view of the apparatus of FIG. 1 with the frame broken away.
  • FIG. 4 is a front view of a bag suitable for use of the apparatus.
  • FIG. 5 is a diagrammatic front plan view of a chain of imbricated bags mounted on tape suitable for use with the apparatus.
  • FIG. 6 is a diagrammatic side plan view of the chain of imbricated bags of FIG. 5.
  • FIG. 7 is a diagrammatic front end view of the support table and inflated bag of FIG. 3.
  • a packaging apparatus 10 is shown therein embodying the invention in one preferred form thereof.
  • the apparatus 10 has a frame 11 with an article inserting tray 12 reciprocally mounted thereon for reciprocation from the out position shown in solid lines in FIG. 3 to the inserted position 13 shown in dotted lines.
  • a support table and tape pulling unit 15 is pivotally mounted on the frame.
  • a forced air system 16 is mounted below the tray (as shown in FIG. 3 on the frame and directs air across the forward edge of the top of the support table and tape pulling unit as indicated by the arrows depicting the air flow path.
  • a bag feed in arrangement 17 is provided at one end of the apparatus 10.
  • a table dropping mechanism 20 is provided for pivoting the support table and tape pulling unit between operating and reloading positions.
  • the support table and tape pulling unit 15 is shown in particular detail in FIGS. 2 and 3.
  • the unit 15 includes a support table 21 which has the shape of an isosceles triangle with the base side of the triangle oriented forward.
  • the triangle tapers rearwardly and has a curved point 18 at its outer end so that it will not tear the bags.
  • the forward edge 22 of the support table curves downwardly and has an opening 23 (FIG. 1) in the center of the curved forward edge cut.
  • the unit 15 has a rectangular front plate 24 and a substantially rectangular bottom plate 25.
  • the side plates 26 and 27 are substantially rectangular with their back edges curving and conforming to curved point 18 of the triangular support table 21.
  • the side plates 26 and 27 are cut out along their rearmost bottom edges to expose the power means 28.
  • a housing for the units power means 28 is formed by the members or walls 21, 24, 25, 26 and 27.
  • the power means 28 includes a power train which begins at the output end with a driven gear 30.
  • a beveled shaft 31 having an end 31a secured to the gear 30 and extending from the gear 30 through a supporting bushing assembly 32 and through the gear housing 33 of clutch 34.
  • the shaft 31 is connected to the gear housing 33 for joint rotation therewith.
  • clutch disc 35 of clutch 34 is secured to the bottom plate 25 by bracket 19 against rotation.
  • the shaft 31 passes beyond clutch 34, through a second supporting bushing 36 and through a second clutch 37.
  • the gear housing 38 of the second clutch 37 is connected to shaft 31 for rotation therewith.
  • the clutch disc 39 of clutch 37 is connected by shaft 40 to an arm 41 which is connected by shaft 42 to a reciprocating rotary actuator or reversing air motor 43.
  • Clutches 34 and 37 are override clutches of the type that have one direction drive and one direction slip. Both clutches drive when clockwise motion is supplied (as seen in FIG. 3) and are out of driving engagement when counter clockwise motion is supplied.
  • the reciprocating rotary actuator 43 is driven in a clockwise direction (as seen in FIG. 3) when the pressure is on line 44 which drives the driven wheel 30.
  • Clutch 37 is engaged with driving shaft 31 and clutch 32 is disengaged allowing shaft 31 to rotate freely.
  • the rotary actuator has a counterclockwise motion and clutch 37 disengages allowing the driven disc 39 to slip and clutch 34 engages preventing the shaft 31 from reversing its motion.
  • Drive gear 30 thus remains in locked position and will not turn counterclockwise.
  • Rotary actuator 43 is controlled by a valve 46 which is a two-way valve that switches the air from line 44 to line 45 and back to line 44 in response to its actuation by a pilot valve 47.
  • Pilot valve 47 is an on-off valve operated through a spring loaded actuator 50 by a leaf spring trigger 51 which closes the pilot valve cutting off the air to the actuator in valve 46 which also has an internal spring loaded actuator.
  • the pilot valve 47 is connected to valve 46 by line 52.
  • a constant supply of air is supplied to valve 46 and to valve 47 via line 53, branch 54 extending to valve 46 and branch 55 extending to valve 47.
  • the leaf spring trigger 51 extends through the support table 21 via slot 23 (FIG 1).
  • a meshing idler gear 56 can be intermeshed or released from meshing engagement with the drives gear 30 by manipulating the toggle lock 57.
  • Gear 56 is journaled in bracket 58 which is connected by rod 60 to the pivotal linkage 61 which moves the wheel in and out in response to the pivoting of handle 62.
  • bracket 58 which is connected by rod 60 to the pivotal linkage 61 which moves the wheel in and out in response to the pivoting of handle 62.
  • the toggle 57 is in the locked position and the meshing gears are in meshed engagement.
  • the handle 62 is lowered the two-position idler gear 56 is moved to its outward position.
  • Two freely rotating guide and orientation wheels 63 and 64 project from and are journaled in plate 24.
  • Wheels 63 and 64 guide the tape that supports the bags down over the curved edge 22 of the support table and provides a twist in the tape so that it may be received between the meshing gears 30 and 56.
  • the surfaces of the wheels 63 and 64 are knurled.
  • the wheels are parallel to one another and laterally adjustably in slots 65 and 66 respectively. Screws 70 and 71 serve to tighten the inner shaft of the wheels in fixed position in the slots in any selected position along the slots.
  • the guide mechanism 17 may be seen to include a series of horizontal, and spaced apart parallel and aligned guide rollers 73, 74, 75 and 76 which are rotatably mounted between the frame members 80 and 81; the topmost surface of each roller is substantially aligned with the upper plane of the supporting table 21.
  • the rollers preferably have plastic or rubber surfaces so that they will not develop sharp ridges or bumps when scared or damaged. Such sharp projections could damage the bags, particularly when the ap paratus is used with plastic bags such as saran or polypropylene bags.
  • rollers are provided so that the apparatus will be readily adaptable for use with bags of varying sizes.
  • the rollers are spaced outward from the back of the sup port table 21 a distance sufficient to provide for a substantially complete straightening out of the bag by the time the bag reaches the forward edge of the support table in its loading position. This is important in providing for the easy inflation of the bag, for if the bag is folded down at its rear portion for a substantial distance when it is being inflated the air rnust usually be supplied with greater force to unfold the bag and lift it upwardly from the folded down region. This could result in the outer extremity of the bag remaining uninflated in some instances which would normally be undesirable.
  • rollers can be lined up beyond the distance required to straighten out the bags this only makes the machine unnecessarily long.
  • the chain of bags can also be fed over a roller more distant from the loading position than that necessary to straighten out the lead bags but then it is more trouble to unload to a chain of bags from the machine to switch bag sizes because the bags must be folded back into the supply box to prevent tangling.
  • rollers 73, 74, 75 and 76 are spaced sufficiently close together so that the chain of imbricated bags will not sag appreciatively down between the rollers when being fed across several of them.
  • a very satisfactory spacing between the rollers has been found to be from about 2% inches to 3 inches using bags that are from l inches wide and 24 inches long and weigh 0.08 pounds to 18 inches wide and 32 inches long and weigh 0.13 pounds each when the bags are spaced threefourths inch apart with a tolerance of one-fourth inch.
  • edges of the bags fall over the edges of the support table. As the bags are pulled farther up on the widening triangle the edges of the bags are continuously straightened or cammed outwardly by the wedge shape of the triangle. At its forward edge the triangle is wider than the bags and they are held straightened out.
  • the table positioning mechanism 20 pivots the support table and tape pulling unit 15 about the pair of trunnions which are connected to the frame 11. Only one of the trunnions 82 is shown in FIG. 3. The trunnions are secured in brackets 83 as seen in FIG. 3. The brackets are secured to the frame 11.
  • the unit 15 is raised and lowered by a single air cylinder 84 which is operated by a valve 85.
  • the valve 85 is opened and closed by lever 86.
  • a constant supply of air is supplied by line 87 to the valve 85 and when the lever is in the position shown in solid lines air is supplied to the cylinder 84 through line 88 and the piston (not shown) is driven forward pulling the table into its closed operable position.
  • the lever 86 By moving the lever 86 to the position shown in broken lines the air to the cylinder 84 which has been holding the table closed is shut off and line 89 is opened allowing the air in the cylinder to escape slowly through a restricted orifice (not shown) allowing the unit 15 to open slowly.
  • the air pressure to the cylinder is 30 p.s.i.
  • the cylinder 84 may be seen to be connected to the frame by bracket 90 and to the unit 15 by bracket 91 through the pistons rod 92.
  • the reciprocating table 12 may be seen in FIGS. 1 and 3 to include sleeves and 101 which are slidably mounted on the supporting guide rods 102 and 103.
  • the reciprocating tray has sides 104 and 105.
  • Spring arms 106 and 107 extend from the sides 104 and respectively and converge inwardly.
  • the air blower unit 16 has a centrifugal air blower or fan inside casing 110 operated by an electric motor (not shown) positioned inside of the air blowers casing on the far side in FIG. 3.
  • the air blower takes air in through the inlet 11 and propels it out through the outlet 112 into a chute 113 which has a sloping bottom wall 114 and sidewalls 115 and 116 (see FIG. 1).
  • the chute 113 directs the air upwardly across the front or forward edge 22 of the support table 21 as indicated by the arrows in FIG. 3.
  • a gate 117 closes the inlet 111 to the fan and thus prevent the movement of air through the fan and thence out exit 112 and chute 113.
  • the gate is a flat disc that engages around the rim of opening 111.
  • the cylinder 120 opens and closes the gate 117.
  • Piston rod 121 connects the cylinder to the gate 117.
  • the cylinder 120 is connected to the frame 11 by mounting bracket 120a.
  • the piston is driven by air supplied by line 122 to close the gate 117 and when the air pressure is released the spring (not shown) opens the gate 117.
  • Valve 123 controls the supply of air to cylinder 120 through the actuator and release of spring loaded lever 124.
  • the gate valve, 117 is normally held open by the spring in cylinder 120 so that air is supplied from the blowers outlet 112 through the chute 113 across the front or forward edge of the support table 21.
  • the beveled camming surface of sleeve 101 cams the lever 124 down admitting air to line 122 which drives the piston in the cylinder 120 outwardly moving the gate 117 across the inlet 111 shutting off the air entering the fan.
  • a plurality of imbricated bags that are arranged along the two strips of adhesive tape 128 and 129 may also be seen in FIGS. 1, 3, 4,5, 6 and 7.
  • one bag 131 is shown inflated on the support table 21.
  • the chain of imbricated bags 130 may be seen to be made up of numerous individual bags 131, 132, 133 and 134, in FIG. 6, for example. These bags are adhered to the two parallel and spaced apart tacky tapes.
  • the two may be seen in FIGS. 1 and 7 in operating engagement on the machine, pulled down over the forward edge 22 of the support table 21 and passed around the knurled wheels 63 and 64 (as may also be seen from FIGS. 2 and 3) and between the meshing gears and 56.
  • the imbricated bags extend back across rollers 73 and 74 that support them.
  • the bags extend over roller 74 and down into a stock box 143.
  • Rollers 75 and 76 are provided for use in supporting longer bags.
  • the bags should usually be at least substantially horizontal before they are inflated.
  • the chain of bags or package 130 is hooked to a separate chain of bags or package 145 which is in another stock container 146.
  • the two chains of bags are joined by securing the end portions of the tapes 128 and 129 and the beginning portions of tapes 147 and 148 in the fresh box 149 of imbricated bags.
  • the tapes 128 and 129 are spaced apart on the imbricated bags about one-fourth the width of the bag in from each side within a tolerance of one-eighth the width of the bag so that the bags may open into a wide oval opening.
  • the opening approaches a circular configuration of the somewhat square configuration of FIG. 7.'
  • the tapes are spaced inwardly from their respective sides about an equal distance.
  • the tolerance for the equal inward spacing is about one-half inch if the bags are to be optimally pulled into the loading position with the opened end evenly aligned.
  • the bag is 12 inches wide the TAPES are 5% inches from inside edge to inside edge, the tapes are three-fourths inch wide, the distance from the outside edge of each tape to the nearest side edge of the bag is 3 inches.
  • the bags are offset from one another along the tape three-fourths inch.
  • the tape contact surface is IVs square inches on each bag, 9/l6-square inch contact surface per tape. Depending on the size bag used the tape contact surface per tape may desirably vary from onefourth to l square inch per tape.
  • the tack strength should be such that from 2-4 pounds, more preferably about 2 pounds, will separate the bag from the tapes and 1% pound, more preferably l pound, will not separate the bag from the tapes when the pull is provided on an angle of 30 in the direction toward which the bags are normally stripped from the tapes. If a high tack tape is used the width of tape and the area of contact can be substantially reduced by several fold.
  • the tensile strength of the tape should, however, be maintained above about 25 to 55 pounds per tape; more preferably 55 pounds per tape. In order that the tapes not cause the lead bag to trough or curve side edge to side edge when being positioned in the loading position the tape extends 18 inches beyond the lead bag in the chain.
  • a dusting of tale to cover the surfaces of the bags inside and out may be used to overcome the sticking together of the surfaces.
  • a process for sequentially loading a chain of imbricated bags supported by two parallel spaced apart tapes each of which has one tacky surface engaging one side of each bag.
  • the other side of the tape is not tacky and faces outwardly.
  • the two spaced apart tapes are pulled from a medial position between their normal spaced apart paths and at the same time their respective tacky surfaces are squeezed together by gripping the tapes between the teeth of a pair of gears and sequentially activating the gears to pull the tape in step wise fashion.
  • the tape accumulates below the gears and can be periodically removed by severing the tape below the gears or by waiting until a run of bags is completed. Because the respective tacky surfaces have been squeezed together the tape is not a problem from the standpoint of sticking to everything and forming a mass and fouling the efficient operation of the apparatus.
  • the chain of imbricated bags is moved in a straight line without any substantial problem with canting from side to side and without a requirement for constantly adjusting the pull so that the chain will move in a straight line to the loading position.
  • Each bag is pulled into the loading position in almost exactly the same position as the previous bag to facilitate easy opening and loading without providing compensation for irregularity in the bag's position.
  • the tapes be pulled from a position below the plane of the bags when they are in the loading position. It is also desirable for the tapes and bags to pass through the loading position in an even horizontal plane with the very front edge of the bags being slightly pulled down over a rounded edge.
  • the tapes should preferably be maintained spaced apart as they pass through the loading position and the plane of the tape should be changed fairly abruptly desirably by engaging the tapes around idler wheels spaced apart about the normal distance of the tapes spacing. By positioning the tape receiving surfaces of the idler wheels both perpendicular and at right angles to the tapes original horizontal plane of movement, the orientation of the tape can be correspondingly changed.
  • the bags are moved into the loading position sequentially, only the topmost bag being fully in the loading position.
  • the upwardly oriented side of this topmost bag is free of attachment so that it may be readily opened.
  • the bottom of the chain of imbricated bags is not tacky and slides easily in response to the pulling force applied to the tape.
  • the bottom side of the forwardmost bag in the imbricated chain is firmly supported so that an item placed in the bag will not cause the entire bag to fall or otherwise deform until the bag is removed from the loading position.
  • the bags are sequentially inflated as they are positioned in the loading position by initially reducing the air pressure above the unattached side of the bags to partially open the bag and subsequently directing a stream of air into the partially open bag to increase the pressure inside of the bag and thereby fully open the bag.
  • An article is loaded into a reciprocating tray and this reciprocating tray is moved forward shutting off the stream of air to the inside of the bag and the tray moves on into the bag before the bag can close and simultaneously peels the bag from the tapes starting at the bag's forward edge and proceeding toward the bottom of the bag until the bag is free from the tape. Simultaneously with this action the article is pushed from the tray into the bag and thereafter the loaded bag is disengaged from the tray and the tray is drawn back out of the way for reloading.
  • the bag may be separated from the tape in the manner described by employing spaced apart spring arms on the tray having reduced dimensions for first entering the bag and increasingly spaced apart and upwardly increasing dimensions that engage the upper side of the bag as one tray progresses into the bag lifting the bag off of the tapes and pushing the bag back from the tape in the same motion in the manner of a moving wedge, see FIG. 3, the shape of arm 107.
  • the article being bagged can be slipped through the tray between the spring arms simultaneously with the inward movement of the tray. The outward movement of the spring arms against the sides of the bag would also tend to hold the bag in position on the tray while the article is being loaded into the bag.
  • This process may advantageously be used to sequentially load a chain of imbricated bags with items such as cleaned and dressed turkeys or other market ready items.
  • the support table and tape pulling unit is opened to the position shown in broken lines in FIG. 3 and the toggle lock 57 is open so that the gear 56 is spaced from gear 30.
  • the knurled wheels 63 and 64 are adjusted apart equal distances from the center approximately the same spacing as the two lead tapes of the chain of bags. The knurled wheels need adjusting only if the width bag being used varies substantially. If adjustment is necessary the screws 70 and 71 are loosened and the respective wheels are correspondingly moved in or out and then the screws are tightened again.
  • the two lead tapes 128 and 129 are manually raised out of a package containing a chain of imbricated bags and fed up and over an appropriate roller so that they lay over the roller as shown in FIG. 1.
  • the chain of imbricated bags 130 can be seen to passbetween roller 74 and 75 and to lie across the top of the rollers 73 and 74.
  • the chain of bags 130 is manually pulled over above the support table 21.
  • the tapes are drawn down over the forward edge of the table so that they engage the table with their nontacky surfaces.
  • tape 128 is twisted one-half turn counterclockwise and its tacky surface is engaged over the knurled wheel 63 as shown in FIG. 7.
  • Tape 129 is twisted one-half turn clockwise and its tacky surface is engaged over knurled wheel 64 as is also shown in FIG. 7.
  • the ends of the two tapes are stuck together tacky surface to tacky surface and positioned or threaded between the gears 30 and 56 which are open.
  • the locking toggle 57 is then pivoted to move the idler gear 56 into mesh with the driven gear 30 and then locked by pushing the toggle over center (FIG. 2). After the toggle is locked the tape is securely held crimped between the intermeshed gears.
  • the tray 12 When the imbricated bags are being fed or loaded into the machine it is desirable to have the tray 12 sufficiently forward to engage the lever 124, and cut off the air from fan 110. This prevents the air from buffeting the forward edge of the bags and inflating them before the apparatus 10 is ready for sequential operation.
  • the machine may be loaded with bags with its power both air and electric off. The air would ten be switched on before activating lever 86 to raise the unit 15. The fan 16 could be switched on subsequently if desired.
  • the driving wheel 30 Once the table and tape pulling unit 15 is in its operating position the driving wheel 30 would convey the tape forward until the lead bag in the chain 130 engages against the trigger 51 opening valve 47 (FIG. 2). The tray 12 is then retracted to its outer position for loading, switching the air on which inflates the lead bag.
  • the powder prevents the sides of the bags from adhering together and excluding air from between the two inner walls of the bags which would make the opening of the bag very difficult using only the air system employed here.
  • the powder may be a material such as cornstarch if edibles are to be placed in the bags.
  • an operator deposits an item to be packaged on the tray 12.
  • the item may be supplied by any means such as, for example, a push cart or conveyor (not shown).
  • the tray 12 is pushed forward by the operator. As the tray moves forward its conveying arms enter the mouth of the bag 131. After the arms have entered about one-fifth of the way into the bag the camming surface engages the lever 124 actuating the gate 117 to close off the air into the fan 110 and thereby shut off 7 the air from the fan.
  • the arms 106 and 107 As the upper shoulder portions of the arms 106 and 107 enter further into the bag they strip the bag from the tape by pulling upwardly on the upper lip of the bag as the tray is pushed further into the bag drawing the bag upwardly on the arms.
  • the arms can be seen to get higher at their basejuncture with sides 104 and 105 as shown in FIG. 3. It may be seen that the forward edge of the bag at the lower lip has been pulled slightly down over the curved forward edge so that the increasing t'pward camming of the arms is excentuated by the downward curved position of the lower lip. This substantially assures that the lower lip of the bag will peel upwardly from the tape with the peeling progressing from the very front edge toward the rear. This greatly reduces the amount of force required to strip the bag from the tape. A much greater force would be needed to shear the bag from the tape in the plane of the tape. Even the force needed to directly pull the bag from the tape at one time straight away is very high.
  • the tray As the bag is stripped from the tape the tray is progressing into the bag thus loading the bag.
  • the article being loaded into the bag is shoved simultaneously as the tray approaches is fully in position out through the spring arms 106 and 107 opening the arms apart and spreading the bag further thus pulling some at the outside edge of the bags contact with the tape.
  • the article is also simultaneously shoved from the tray and the bag is shoved from the loading position of the support table and, because ofits relatively slick surface, it slides easily across the other bags and onto a second station (not shown) which may be a conveyor or a table for moving it to a separate position for further processing such as closing by a person standing just beyond the bagging position.
  • the rollers 72 and 73 aid in moving the bags out of the way to the next station for further processing so that another bag may be loaded.
  • the tray does not have the upper camming shape to the arms 106 and 107, the operator may hold her arm tilted upwardly and engage the forward edge of the bag stripping it from the tape.
  • the trigger 51 As the bag is stripped from the tape the trigger 51 is released by the lower lip of the bag.
  • the trigger 51 moves inwardly due to its spring action engaging the spring loaded slide actuator 50 which closes the pilot valve 47 cutting off the air to line 52 which allows the air through line 54 to move the slide in the valve 46 to open line 44 and reverse the rotary actuator 43 driving gear 30 clockwise through the power train.
  • the tape is thus conveyed through the meshing gears 30 and 56 a sufficient distance to pull the next bag 132 in the chain against the trigger 51 drawing the trigger forward away from the spring loaded actuator 50 which opens the pilot valve 46 admitting air through line 52 against the slide in the valve 47 which switches the air to line 45 reversing the reciprocating actuator to a counterclockwise rotation.
  • the leaf spring trigger 51 because of its extra bending displacement provides some degree of override in response to the bags pressure against it insuring a complete disengagement of the trigger from the slide 50.
  • the override is provided by the momentary delay in the reversal of the reciprocating rotary actuator.
  • the override prevents the shattering type of switching of the power means that could otherwise occur due to a usually inherent slight giving and stretching of the forward lip of the plastic bags that would usually be used on the apparatus.
  • the lip of the bag is engaged with and serves to actuate the trigger 51.
  • lever l24 is released by the camming surface 125 thereby opening valve 123 releasing the air from the cylinder 120 allowing the spring in the cylinder to draw the piston into the cylinder opening up the inlet 111 to the fan 110.
  • the fan is open again, the loaded bag or package should have moved out of the way and the next bag is usually already in the loading position.
  • the fan 110 propels air through outlet 112 and the chute 113 directs the air against the forward edge of the bag where it initially proceeds on across the upper surface of the bag 131 until sufficient opening is attained in the bag for the air to fully enter the bag 13]. Once the bag is fully inflated and opened by the air, the apparatus is ready for the repetition of the procedure just described which can be sequentially continued indefinitely.
  • a new package 146 containing a new chain of bags may be moved up adjacent to the package 143 as shown in FIG. 3 and the end tapes 128 and 129 from the chain of imbricated bags in package 143 may be attached to the lead out ends of tapes 147 and 148, respectively, by adhering the tapes together so that the new chain will be pulled onto the apparatus and fed'through the apparatus in the same manner as the chain 130.
  • the tapes 147 and 148 must be attached so that the tacky tape sides are oriented up in the same manner as the chain of bags 130. It is obvious that this sequence can also be continued indefinitely as the trailing ends of tapes 147 and 148 may be attached to another package of bags and so on.
  • the empty package container may be removed and the package 149 may be slipped into its position.
  • a reciprocating rotary actuator has been found to be the preferable driving means because it has low maintenance costs and low power requirements.
  • a 150 inch pounds torque rotary actuator was used.
  • the use of the air cylinder 84 to raise and lower the support table and tape pulling unit 21 has been found to be particularly desirable because the 30 pounds of pressure required to pivotally move the support table and tape pulling unit 15 which weighs about 30 pounds, in the embodiment shown, is not a sufficiently large force to present a safety hazard should someone get a hand or another body part in the way of the movement of the support table and tape pulling unit 15.
  • the air cylinder which is a double acting type air cylinder when operated at about 30 pounds of air pressure provides sufficiently slow-medium motion in opening and closing the apparatus to not delay operation and yet to give the operator time to observe and correct any binding, such as the bags not moving upwardly over the roller as the tape moves forward which could cause a break in the tape due to overstretching should the bags for some reason be held by the package due to a package being incompletely opened or some such.
  • This speed of opening and closing requiring about 4 seconds, leaves the operators hands free to adjust the tape after he positions the handle 86 to actuate the cylinder 84.
  • lever 86 When it is desired to switch the size of the bags or to change the tape for some other reason lever 86 is shifted to the position shown in dotted lines in FIG. 3 closing the air inlet to line 88 into the cylinder 84 and opening the outlet for the air from the cylinder via line 89 allowing the table to fall slowly backwards, the table being pulled backwards by its offcenter weight about the pivot 82 which is engaged in bracket 83 and their counterparts (not shown) on the other side of the unit 15.
  • the toggle 57 is moved to move idler wheel 56 out of mesh with wheel 30 releasing the tape from engagement therebetween.
  • the chain of imbricated bags can then be lifted back and fed back between rollers 74 and 75 into the package 143.
  • the apparatus is then ready for loading with a chain of imbricated bags in the manner previously described.
  • a chain of bags could be used up and the ends of the tape would simply run out between the meshing gears 30 and 56.
  • the unit 15 would still be dropped back and the toggle 57 opened.
  • a package of imbricated bags comprising two strands of tape, each of said strands of tape having a tensile strength of at least 25 pounds and a tacky surface and an opposite surface free of tack; a plurality of open ended bags, each of said bags having two overlying sides of substantially identical dimension, each of said bags having one side secured to said tacky surface of both of said tapes, the tacky surface of each of said tapes having a contact area of from about one-fourth to 1 square inch with each of said bags and said tacky surface having a tack strength when adhered to the bag sufficient to allow a pull in excess of 4 pounds to separate the bag from the tape and to hold the bag securely to said tape against a pull of less than one-half pound when the pull is applied at an angle of 30, the open end of each of said bags oriented in the same direction respecting said tapes as all of the other bags and each bag after the bottom bag relative to said tape ofi'set along said tapes and overlying the opening of the underlying bag;

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Bag Frames (AREA)
  • Making Paper Articles (AREA)
  • Package Closures (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)
US666855A 1967-09-11 1967-09-11 Package of bags Expired - Lifetime US3587843A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US66685567A 1967-09-11 1967-09-11

Publications (1)

Publication Number Publication Date
US3587843A true US3587843A (en) 1971-06-28

Family

ID=24675772

Family Applications (1)

Application Number Title Priority Date Filing Date
US666855A Expired - Lifetime US3587843A (en) 1967-09-11 1967-09-11 Package of bags

Country Status (9)

Country Link
US (1) US3587843A (de)
BE (1) BE720580A (de)
CH (1) CH480234A (de)
DE (2) DE6603100U (de)
DK (1) DK123086B (de)
ES (1) ES358034A1 (de)
FR (1) FR1579413A (de)
GB (1) GB1234609A (de)
NL (1) NL6812882A (de)

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3915302A (en) * 1974-10-07 1975-10-28 Vac Pac Mfg Co Imbricated package of closed-end bags
US4003782A (en) * 1975-05-30 1977-01-18 Vac-Pac Manufacturing Co. Apparatus for producing a package of imbricated bags
US4076122A (en) * 1976-10-26 1978-02-28 W. R. Grace & Co. Package of bags
US4113139A (en) * 1977-05-12 1978-09-12 W. R. Grace & Co. Sealed taped bags and sealed tape bag dispenser
US4273549A (en) * 1978-06-26 1981-06-16 W. R. Grace & Co. Process for making multi-walled plastic bag
DE3035406A1 (de) * 1979-11-28 1981-09-10 W.R. Grace & Co., 10036 New York, N.Y. Vorrichtung zum abgeben von auf klebestreifen gehaltenen beuteln
GB2128575A (en) * 1982-10-04 1984-05-02 Grace W R & Co Taped multibags
US4481669A (en) * 1978-06-26 1984-11-06 W. R. Grace & Co., Cryovac Div. Multi-walled plastics bag
US4493684A (en) * 1982-10-04 1985-01-15 W. R. Grace & Co., Cryovac Div. Method for making partially separated multibags
US4567715A (en) * 1981-12-18 1986-02-04 Kureha Kagaku Kogyo Kabushiki Kaisha Packing device
US4635295A (en) * 1984-09-18 1987-01-06 W. R. Grace & Co., Cryovac Div. Taped bag with extended side seals
US4693372A (en) * 1985-06-14 1987-09-15 W. R. Grace & Co., Cryovac Div. Taped bag chain with cassette
US5020269A (en) * 1990-02-01 1991-06-04 Dart Manufacturing Company Fishing bait organizer
US5123197A (en) * 1990-02-01 1992-06-23 Dart Manufacturing Fishing bait organizer
US5394638A (en) * 1993-05-24 1995-03-07 Amsport, Inc. Fishing bait and tackle organizer
EP0761554A1 (de) * 1995-08-31 1997-03-12 W.R. Grace & Co.-Conn. Beutel und Verfahren und Vorrichtung zum Oeffnen des Beutels
US5810706A (en) * 1995-08-31 1998-09-22 W. R. Grace & Co.-Conn. bag with an access hole in one panel
US5826405A (en) * 1997-05-16 1998-10-27 W. R. Grace & Co.-Conn Method and apparatus for opening taped bags
WO1999054213A1 (en) 1998-04-22 1999-10-28 Cryovac, Inc. Method and apparatus for opening and transporting bags
US6282871B1 (en) 1997-05-16 2001-09-04 Cryovac, Inc. Method and apparatus for opening and transporting bags
WO2002074625A2 (en) 2001-03-16 2002-09-26 Cryovac, Inc. Rolled taped bags
US20040043882A1 (en) * 2002-08-29 2004-03-04 Ishida Bag manufacturing and packaging apparatus
US20050161876A1 (en) * 2002-01-09 2005-07-28 Rafe Patterson Method for storing, transporting and dispensing cartons
US20060151658A1 (en) * 2002-10-03 2006-07-13 Riccardo Palumbo Apparatus and method for loading a bag train
US20070069449A1 (en) * 2005-09-27 2007-03-29 Cady Derril R Bag dispenser for providing bags at a workstation and method
US7243475B1 (en) 2005-09-19 2007-07-17 Greydon, Inc. Bagger or bag dispenser with reversible take-up reel and method
US20070164071A1 (en) * 2006-01-17 2007-07-19 Cryovac, Inc. Web dispenser
US20090023569A1 (en) * 2007-07-16 2009-01-22 Frost Alexandre J Apparatus and method for printing and dispensing a web
US20110100996A1 (en) * 2009-10-30 2011-05-05 Munchkin, Inc. System and method for disposing waste packages such as diapers
US20110099957A1 (en) * 2009-10-30 2011-05-05 Munchkin, Inc. System and method for disposing waste packages such as diapers
US9994393B2 (en) 2014-12-11 2018-06-12 Munchkin, Inc. Container for receiving multiple flexible bag assemblies
CN109195796A (zh) * 2016-04-01 2019-01-11 克里奥瓦克公司 无尘可热收缩包装物件

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2526432C3 (de) * 1975-06-13 1984-03-08 Windmöller & Hölscher, 4540 Lengerich Vorrichtung zum Speichern und Zuführen von Ventilsäcken zu Füllmaschinen
ATE69404T1 (de) * 1987-08-19 1991-11-15 Pacimex Verpackungen Gmbh Verfahren zur herstellung einer halbschlauchbahn.
GB2288583A (en) * 1994-03-18 1995-10-25 Grace W R Ltd Taped bag supply and dispensing method

Cited By (47)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3915302A (en) * 1974-10-07 1975-10-28 Vac Pac Mfg Co Imbricated package of closed-end bags
US4003782A (en) * 1975-05-30 1977-01-18 Vac-Pac Manufacturing Co. Apparatus for producing a package of imbricated bags
US4076122A (en) * 1976-10-26 1978-02-28 W. R. Grace & Co. Package of bags
US4113139A (en) * 1977-05-12 1978-09-12 W. R. Grace & Co. Sealed taped bags and sealed tape bag dispenser
US4273549A (en) * 1978-06-26 1981-06-16 W. R. Grace & Co. Process for making multi-walled plastic bag
US4481669A (en) * 1978-06-26 1984-11-06 W. R. Grace & Co., Cryovac Div. Multi-walled plastics bag
DE3035406A1 (de) * 1979-11-28 1981-09-10 W.R. Grace & Co., 10036 New York, N.Y. Vorrichtung zum abgeben von auf klebestreifen gehaltenen beuteln
US4567715A (en) * 1981-12-18 1986-02-04 Kureha Kagaku Kogyo Kabushiki Kaisha Packing device
US4493684A (en) * 1982-10-04 1985-01-15 W. R. Grace & Co., Cryovac Div. Method for making partially separated multibags
GB2128575A (en) * 1982-10-04 1984-05-02 Grace W R & Co Taped multibags
US4635295A (en) * 1984-09-18 1987-01-06 W. R. Grace & Co., Cryovac Div. Taped bag with extended side seals
US4693372A (en) * 1985-06-14 1987-09-15 W. R. Grace & Co., Cryovac Div. Taped bag chain with cassette
US4796412A (en) * 1985-06-14 1989-01-10 W. R. Grace & Co. Method of packaging utilizing a taped bag chain with cassette
US5020269A (en) * 1990-02-01 1991-06-04 Dart Manufacturing Company Fishing bait organizer
US5123197A (en) * 1990-02-01 1992-06-23 Dart Manufacturing Fishing bait organizer
US5632113A (en) * 1993-05-24 1997-05-27 Plano Molding Company Fishing bait and tackle organizer
US5394638A (en) * 1993-05-24 1995-03-07 Amsport, Inc. Fishing bait and tackle organizer
EP0985522A1 (de) 1995-08-31 2000-03-15 Cryovac, Inc. Verfahren zum Herstellen von Beuteln
EP0761554A1 (de) * 1995-08-31 1997-03-12 W.R. Grace & Co.-Conn. Beutel und Verfahren und Vorrichtung zum Oeffnen des Beutels
US5810706A (en) * 1995-08-31 1998-09-22 W. R. Grace & Co.-Conn. bag with an access hole in one panel
US6148587A (en) * 1995-08-31 2000-11-21 Cryovac, Inc. Bag with an access hole in one panel
US6282871B1 (en) 1997-05-16 2001-09-04 Cryovac, Inc. Method and apparatus for opening and transporting bags
US5987854A (en) * 1997-05-16 1999-11-23 Cryovac, Inc. Method and apparatus for opening and transporting bags
US5826405A (en) * 1997-05-16 1998-10-27 W. R. Grace & Co.-Conn Method and apparatus for opening taped bags
WO1999054213A1 (en) 1998-04-22 1999-10-28 Cryovac, Inc. Method and apparatus for opening and transporting bags
AU740038B2 (en) * 1998-04-22 2001-10-25 Cryovac, Inc. Method and apparatus for opening and transporting bags
WO2002074625A2 (en) 2001-03-16 2002-09-26 Cryovac, Inc. Rolled taped bags
US20050161876A1 (en) * 2002-01-09 2005-07-28 Rafe Patterson Method for storing, transporting and dispensing cartons
US20040043882A1 (en) * 2002-08-29 2004-03-04 Ishida Bag manufacturing and packaging apparatus
US7093404B2 (en) 2002-08-29 2006-08-22 Ishida Co., Ltd. Bag manufacturing and packaging apparatus
US20060151658A1 (en) * 2002-10-03 2006-07-13 Riccardo Palumbo Apparatus and method for loading a bag train
US7493740B2 (en) * 2002-10-03 2009-02-24 Cryovac, Inc. Apparatus and method for loading a bag train
US7243475B1 (en) 2005-09-19 2007-07-17 Greydon, Inc. Bagger or bag dispenser with reversible take-up reel and method
US20070069449A1 (en) * 2005-09-27 2007-03-29 Cady Derril R Bag dispenser for providing bags at a workstation and method
US7942095B2 (en) 2005-09-27 2011-05-17 Greydon, Inc. Bag dispenser for providing bags at a workstation and method
US7607467B2 (en) 2006-01-17 2009-10-27 Cryovac, Inc. Web dispenser
US20070164071A1 (en) * 2006-01-17 2007-07-19 Cryovac, Inc. Web dispenser
US20090023569A1 (en) * 2007-07-16 2009-01-22 Frost Alexandre J Apparatus and method for printing and dispensing a web
US8186896B2 (en) 2007-07-16 2012-05-29 Cryovac, Inc. Apparatus and method for printing and dispensing a web
US20110100996A1 (en) * 2009-10-30 2011-05-05 Munchkin, Inc. System and method for disposing waste packages such as diapers
US20110099957A1 (en) * 2009-10-30 2011-05-05 Munchkin, Inc. System and method for disposing waste packages such as diapers
US8833592B2 (en) 2009-10-30 2014-09-16 Munchkin, Inc. System and method for disposing waste packages such as diapers
US10343842B2 (en) * 2009-10-30 2019-07-09 Munchkin, Inc. System and method for disposing waste packages such as diapers
US9994393B2 (en) 2014-12-11 2018-06-12 Munchkin, Inc. Container for receiving multiple flexible bag assemblies
US10053284B2 (en) 2014-12-11 2018-08-21 Munchkin, Inc. Container for receiving multiple flexible bag assemblies
US10086996B2 (en) 2014-12-11 2018-10-02 Munchkin, Inc. Container for receiving multiple flexible bag assemblies
CN109195796A (zh) * 2016-04-01 2019-01-11 克里奥瓦克公司 无尘可热收缩包装物件

Also Published As

Publication number Publication date
DE6603100U (de) 1969-09-04
DK123086B (da) 1972-05-15
FR1579413A (de) 1969-08-22
GB1234609A (de) 1971-06-09
NL6812882A (de) 1969-03-13
ES358034A1 (es) 1970-04-16
BE720580A (de) 1969-02-17
CH480234A (de) 1969-10-31
DE1786270A1 (de) 1972-01-20

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