Method and apparatus for placing a product in a flexible recloseable container

Abstract
An invention for forming, filling, and sealing a flexible recloseable container. Both vertical and horizontal methods for placing product within the container are disclosed. The invention includes guiding a web of film which has interlocking fastener strips sealed to the web. A slider for locking and unlocking the fastener strips is placed in the correct orientation, spread apart at a pair of inner feet, and inserted over the fastener strips. The slider is positioned to close a substantial portion of the strips, and then an end stop, docking station, and corner seal are formed against a sealing plate. The slider is then repositioned, and a tamper evident seal may be placed over the fastener strips.
Description




BACKGROUND OF THE INVENTION




The present invention relates to a method and apparatus for placing a product in a flexible, recloseable container. However, certain applications may be outside of this field.




Flexible, recloseable containers such as zipper-type plastic bags are a significant advancement in the field of prepackaged items both for industrial and retail uses. The packaging industry recognizes the importance of using interlocking fastener profile strips to provide the ability to reclose the container after first use. It is also important that it be easy for the user to reliably close the interlocking strips. For instance, some containers utilize multi-colored interlocking strips to make it easier for the consumer to determine if a container is closed. Another way in which to provide for reliable interlocking is by the use of a slider that opens the interlocks when moved in one direction, and closes the interlocks when moved in the other direction. Sliders have not been applied to flexible, recloseable containers being filled with a product on a form, fill, and seal machine. What is needed is a method for incorporating a slider on a flexible, recloseable container that is formed, automatically filled with a product, and sealed. The present invention provides this in a novel and unobvious way.




SUMMARY OF THE INVENTION




One aspect of the present invention provides a method for placing the product in a flexible recloseable container. The method includes feeding a web of flexible film with interlockable fastener strips. A slider is oriented to a pre-determined orientation, and placed over the fastener strips. The slider is moved relative to the fastener strips such that the fastener strips are generally closed, A transverse seal is generally formed across the film and a product is placed within the web.




Another aspect of the present invention provides an apparatus for placing a product in a flexible recloseable container. The apparatus includes means for feeding a web of flexible film with interlockable fastener strips, the strips including shoulders. There is also a slider for locking and unlocking the fastener strips, the slider having feet. The apparatus also includes a slider application machine for placing the slider on the fastener strips. The slider application machine includes a rotatable selector wheel and a spreading ridge. The wheel includes a pocket for accepting the slider and moving the slider while it is in contact with the spreading ridge, such that the feet are spread apart sufficiently to pass freely over the shoulders of the fastener strips. There is also a sealing mechanism for forming at least a partial transverse seal generally across the film. The apparatus also includes means for placing a product within the web of flexible film.




It is an object of the present invention to provide an improved method for placing a product in a flexible recloseable container.




This and other objects of the present invention will be found in the claims, description, and drawings of the embodiments of the present invention to follow.











BRIEF DESCRIPTION OF THE DRAWINGS





FIG. 1

shows a flexible recloseable container for containing a product, the container being suitable for being formed, filled, and sealed in several embodiments of the present invention.





FIG. 2

is an enlarged perspective fragmentary cross sectional view of the container of

FIG. 1

as taken along line


2





2


of

FIG. 1

, with one sidewall partially peeled away from the other sidewall.





FIG. 2



a


is a partial cross-sectional view of the container of

FIG. 2

as taken along line


2




a—




2




a


of FIG.


2


.





FIG. 3

is a schematic representation of apparatus


100


, one embodiment of the present invention, for forming, filling, and sealing a container in a substantially vertical manner.





FIG. 4

shows a side elevational view of a slider application machine useful with the present invention.





FIG. 5

is a schematic representation of a side view of apparatus


200


, another embodiment of the present invention, for forming, filling, and sealing a container in a substantially horizontal manner.





FIG. 6

is a perspective schematic of apparatus


400


, another embodiment of the present invention, for forming, filling, and sealing a container in a substantially horizontal manner.











DESCRIPTION OF THE PREFERRED EMBODIMENT




For the purposes of promoting an understanding of the principles of the invention, reference will now be made to the embodiment illustrated in the drawings and specific language will be used to describe the same. It will nevertheless be understood that no limitation of the scope of the invention is thereby intended, such alterations and further modifications in the illustrated device, and such further applications of the principles of the invention as illustrated therein being contemplated as would normally occur to one skilled in the art to which the invention relates.





FIG. 1

shows a flexible recloseable container


20


for containing a product, container


20


useful for being formed, filled, and sealed in several embodiments of the present invention. Container


20


comprises first and second sidewalls


22


and


24


, respectively, which may be made from any suitable thermoplastic film such as, for example, low density polyethylene, linear low density polyethylene, or similar materials. Sidewalls


22


and


24


include first left transverse side seal


28


and second right transverse side seal


30


. Container


20


also includes a bottom edge


26


generally opposite a pair of interlocking fastener strips


32


and


34


. Bottom edge


26


may include a fold between sidewalls


22


and


24


, such as for a container formed using some embodiments of a vertical form, fill and seal apparatus, or alternatively edge


26


may include a seal between sidewalls


22


and


24


, such as for a container


20


formed using other embodiments of a horizontal form, fill, and seal apparatus.





FIG. 2

is an enlarged cross section of the container of

FIG. 1

as taken along line


2





2


of

FIG. 1

with sidewall


22


partially peeled away from sidewall


24


. As shown in both

FIGS. 1 and 2

, interlocking strips


32


and


34


of fastener profiles run along the top edge of container


20


. Strips


32


and


34


are sealed together at endstops


36


and


38


. A docking station


39


is located near endstop


36


. Strips


32


and


34


are sealed to each other and also to sidewalls


22


and


24


at corner seals


40


and


42


. Corner seals


40


and


42


are located along their respective edges of container


20


. Seals


40


and


42


are generally located below shoulders


45


and


47


of fastener strips


32


and


34


, respectively, and above lower edges


45




a


and


47




a


of inner flanges


44


and


46


of fastener strips


32


and


34


, respectively. In one embodiment of the present invention, container


20


includes a tamper-evident seal


43


between sidewalls


22


and


24


. Seal


43


may be an extension of flanges


46


and


44


that extends internally across the opening of container


20


. Seal


43


may be integrally molded with flanges


44


and


46


, or may be attached separately. The broken or unbroken state of seal


43


provides evidence to the user of whether or not container


20


has been previously opened. A tamper evident seal is especially useful with a form, fill, and seal machine that inserts an edible product into container


20


.




Slider


48


is slidable upon fastener strips


32


and


34


. Movement of slider


48


along the fastener profiles results in either an interlocking of profiles


50


and


52


, or an unlocking of profiles


50


and


52


. In some embodiments of the present invention profiles


50


and


52


are comprised of uppermost and bottommost closure elements. In one embodiment there is an uppermost closure element


50




a


that interlocks with uppermost closure element


52




a


, and a bottommost closure element


50




b


that interlocks with bottommost closure element


52




b


. In a more preferable embodiment of the present invention separator


60


has a length sufficient to separate elements


50




a


and


52




a


, and its length is otherwise kept to a minimum. In this manner, separator


60


is kept from interferring with spreading ridge


314


of slider application machine


114


, as will be shown later. It is preferable that slider


48


be cast or molded as a single piece, such that subsequent spreading of slider


48


by slider application machine


114


does not unduly stress a joint between separate slider components.





FIG. 2



a


is a partial cross-sectional view of the container of

FIG. 2

as taken along line


2




a—




2




a


of FIG.


2


. Slider


48


is shown enclosing non-interlocked portions of fastener strips


34


and


32


. A separator


60


separates closure elements


50




a


and


52




a


. Feet


54


and


56


of slider


48


retain slider


48


on the interlocking strips by shoulders


45


and


47


, respectively.





FIG. 3

is a schematic representation of apparatus


100


, one embodiment of the present invention. Apparatus


100


is useful for forming, filling, and sealing a flexible recloseable container such as, for example, container


20


in a generally vertical orientation. Apparatus


100


includes rollers, belts, or similar devices for feeding film web


102


to a film guide


103


that accepts the sheet of web


102


and forms it into a generally tubular shape over the outside of filling tube


104


, with web


102


proceeding in a direction as indicated by arrow


101


. The supply


102


of film web is in a sheet form, as depicted.




Interlocking strips


32


and


34


of fastener profile are provided from a supply


106


. Alternatively, some embodiments of the present invention include interlocking strips


32


and


34


which have previously been made integral with web


102


. Strips


32


and


34


are substantially interlocked as provided, and pass over one or more guiding and tensioning rollers, and then between free edges


107




a


and


107




b


of web


102


. Sealing mechanism


108


forms a continuous seal along edge


107




a


of web


102


and fastener strip


32


, including a portion of inner flange


44


. Sealing mechanism


108


is preferably of a type that utilizes either heated metal bars or electrical impulse sealing bars. It is preferable that edge


107




a


seal against and overlap flange


44


and not shoulder


45


. Likewise, free edge


107




b


is sealed along inner flange


46


of fastener strip


34


, and preferably does not overlap shoulder


47


, although there may be overlapping of the free edge and the shoulder in some embodiments of the present invention. In a more preferable embodiment of the present invention, strips


32


and


34


are oriented relative to edges


107




a


and


107




b


, respectively, such that free edges


107




a


and


107




b


are not between feet


54


and


56


, respectively, so as to facilitate placement of slider


48


on strips


32


and


34


by slider application machine


114


.




A vibrating hopper


110


provides sliders


48


to channel


112


in an orientation appropriate for insertion of slider


48


onto fastener strips


32


and


34


. Slider


48


is preferably oriented on fastener strips


32


and


34


such that the more narrow, interlocking end


58


of slider


48


faces in direction of the movement


101


of film web


102


. The wider, unlocking end


59


of slider


48


is thus oriented opposite to direction of motion


101


. Channel


112


provides sliders


34


to slider application machine


114


. The present invention also contemplates those embodiments in which unlocking end


59


is oriented to face in the direction of movement


101


.




Slider application machine


114


includes a motor-driven rotating selector wheel


115


which rotates within a semi-circular pocket of mounting block


302


. Selector


115


rotates in a direction indicated by arrow


304


about axis of rotation


306


. Sidewalls


22


and


24


of web


102


, with fastener strips


32


and


34


attached, move in direction


101


. A stationary probe


309


spreads apart fastener strips


32


and


34


as the strips move toward slider application machine


114


. Probe


309


is shown extending from channel


112


and preferably passing between both sets of closure elements


50




a


and


52




a


, and


50




d


and


52




b


. However, it is also acceptable in some embodiments of the present invention that probe


309


extend only between top closure elements


50




a


and


52




a


. In this manner the bottom closure elements remain interlocked, and slider


48


need not be spread apart as much to pass over the bottom closure elements


50




d


and


52




b


. This partial opening by probe


309


would be useful in those embodiments of the present invention that utilize sliders


48


that cannot be spread apart far enough to extend over the bottom closure elements.





FIG. 4

shows a side elevational view of a slider application machine useful with the present invention. Selector


115


includes within it four pockets


310


. A first pocket


310




a


is shown after having accepted a slider


48


out of channel


112


. As seen in

FIG. 5

, as selector


115


rotates, pocket trailing edge


312


pushes slider


48


past a spreading ridge within block


302


. The ridge contacts feet


54


and


56


of slider


48


. The spreading ridge has a cross-sectional width that increases in the direction of rotation of selector


115


. The height of the spreading ridge must be compatible with the length of separator


60


of slider


48


, such that the two do not interfere during the spreading operation. As slider


48


is pushed along the spreading ridge, feet


54


and


56


are spread apart a sufficient distance to pass over closure elements


50


and


52


and shoulders


45


and


47


. The present invention also contemplates those embodiments in which feet


54


and


56


also pass over edges


107




a


and


107




b


, respectively.




Web


102


traverses along filling tube


104


, with strips


32


and


34


passing through a guiding slot within mounting block


302


. The guide ensures proper orientation of the fastener strips


32


and


34


prior to placement of slider


48


on the strips. It is preferable that web


102


momentarily stop as selector


115


is rotated about 90 degrees. The positional movements of selector


115


and web


102


are synchronized such that a single slider


48


is placed on each container


20


. In one embodiment of the present invention this synchronization is achieved by controlling both the rotational actuation of selector


115


and the flow of web


102


. This control may be achieved by an analog controller that senses the stoppage of web


102


, such as, by way of example only, a positional sensor on a gear train driving rotating sealing mechanism


108


, or by an optical sensor that stops web


102


when a particular visual feature of web


102


passes in front of the sensor. As another example, synchronization may be achieved by a digital electronic controller that actuates selector


115


after determining from an encoder that a portion of web


102


equivalent to the width of container


20


as gone past machine


114


since the last slider


48


was placed over strips


32


and


34


.




A pocket


310


with a slider


48


located therein is rotated to position slider


48


on web


102


. Slider


48


moves over the spreading ridge and is spread open. Selector


115


then places slider


48


over fastener strips


32


and


34


at a first location before feet


54


and


56


have had sufficient time to return to their normal unspread configuration. Slider


48


returns to its unspread configuration under the influence of elastic forces within slider


48


. Selector


115


stops rotation at a position with the pocket leading edge pulled away from contact with interlocking end


58


of slider


48


. Web


102


is free to continue moving along filling tube


104


without interference from pocket


310


. Edge


318


of mounting block


302


is cut back a sufficient amount to permit slider


48


to freely pass thereby. By momentarily stopping web


102


as selector


115


is rotated, and also by moving the pocket leading edge away from contact with slider


48


, it becomes unnecessary to coordinate the rotational speed of selector


115


with the linear speed of web


102


. Web


102


is preferably static when slider


48


is applied. The present invention also contemplates those embodiments in which either or both selector


115


and web


102


move in a generally continuous fashion.




After placing a slider


48


over fastener strips


32


and


34


at the first location, slider


48


is then held in a static position by positioning arm


116


and slider receiver


118


as film web


102


continues to be pulled down filling tube


104


. Arm


116


may be a pocket or hand located at the end of a pneumatic cylinder, the pocket or hand having a shape complementary to a portion of slider


48


. Actuation of the cylinder places the pocket or hand near slider


48


and constrains slider


48


to a position. Receiver


118


may be a pocketed plate or a flat plate that helps constrain motion of slider


48


when arm


116


is actuated.




Arm


116


and receiver


118


thus position slider


48


such that it does not interfere with the formation of corner seals


40


and


42


. Because of the orientation of interlocking end


58


to face in the direction of the flow of web


102


, holding slider


48


stationary as web


102


continues to move ensures that interlocking strips


32


and


34


are interlocked downstream of each slider


48


. For those embodiments of the present invention in which unlocking end


59


faces in the direction of the flow of web


102


, the present invention contemplates.moving slider


48


relative to web


102


such that strips


32


and


34


are interlocked downstream of each slider


48


.




A portion of this interlocked length of strips


32


and


34


is presented between sealing horn


120


and sealing plate


122


. A pneumatic cylinder places horn


120


at a second location along fastener strips


32


and


34


and free ends


107




a


and


107




b


, and against sealing plate


122


. By means of heat, ultrasonic energy, or similar process horn


120


fuses the portions of fastener strips and sidewall between horn


120


and sealing plate


122


and simultaneously forms a corner seal


40


and endstop


36


of a first container


20


, and a corner seal


42


and endstop


38


of an adjacent, second container


20


. It is preferable that horn


120


and sealing plate


122


not alter shoulders


45


and


47


, such that there remains shoulders


45


and


47


generally across the width of container


20


to restrain slider


48


.




As the assembly of web


102


, fastener strips


32


and


34


, and slider


48


move down along filling tube


104


, there is a second repositioning of slider


48


. Slider


48


is positioned adjacent the second location fused by horn


120


and sealing plate


122


by positioning arm


124


which holds slider


48


stationary against slider receiver


126


, in a manner similar to the positioning by arm


116


and receiver


118


. It is preferable, but not necessary, that slider


48


be moved in a manner which interlocks strips


32


and


34


and positioned adjacent endstop


36


before endstop


36


is fully hardened. The softened area of strips


32


and


34


adjacent endstop


36


is thereby permanently deformed by slider


48


. This movement of slider


48


into the previously fused area has been observed to reduce leakage from container


20


. This permanently deformed area is docking station


39


.




In some embodiments of the present invention, a tamper evident seal


127


is provided over guiding and tensioning rollers and into a second sealing mechanism


128


. Mechanism


128


fuses a tamper evidence exterior seal


127


near free ends


107




a


and


107




b


of web


102


, and over the exterior of slider


48


and fastener strips


32


and


34


. In other embodiments of the present invention, a tamper evident interior seal


43


is located inside and between fastener strips


32


and


34


, as indicated by dotted line


43


of FIG.


1


. In other embodiments of the present invention it is not necessary to have a tamper evident seal.




As web


102


flows off of filling tube


104


, a cutting and sealing mechanism


130


places a seal transversely across sidewalls


22


and


24


. Having thus formed the first transverse seal of container


20


, a product may be placed into the vertically extending filling tube


104


to thus fall within container


20


. When container


20


is full and flows off of tube


104


, sealing and cutting mechanism


130


forms the other transverse seal of container


20


, and severs container


20


from web


102


. The sealing and cutting mechanism


130


simultaneously forms the lower seal of the next container


20


.





FIG. 5

is a schematic representation of a side view of another embodiment of the present invention, apparatus


200


for forming, filling, and sealing a container such as container


20


in a substantially horizontal manner. The use of similar element numbers denotes elements substantially related to those already described.




A web


102


of film is fed over rollers and along a folding guide


202


in a horizontal direction as indicated by arrow


201


. Guide


202


folds web


102


in half, with fold


203


preferably located above free edges


107




a


and


107




b


. It is also acceptable that fold


203


be located laterally to edges


107




a


and


107




b


, such that web


102


is generally placed in a horizontal plane. A supply of interlocking fastener strips


32


and


34


are guided into alignment with free edges


107




a


and


107




b


, and sealed thereto by sealer


108


. Feeding mechanisms


204


generally guide and feed web


102


. Rollers, belts, and similar devices are suitable as feeding mechanisms


204


.




Sliders


48


are placed along fastener strips


32


and


34


by machine


114


in a manner previously described. Sliders


48


are positioned by arm


116


and receiver


118


, a fused spot is created by horn


120


and sealing plate


122


, and slider


48


is repositioned by arm


124


and receiver


126


, all in a manner as previously described. A tamper evident seal


127


, it desired, may be applied to container


20


by sealer


128


in a manner as previously described.




Prior to the formation of transverse seals, it is necessary to open the bottom edge


203


of container


20


for subsequent introduction of the product. A slitter


210


cuts through the fold. Slitter


210


is preferably a static mechanism that cuts bottom edge


203


as web


102


is pulled past slitter


210


. Bottom edge


203


is cut into bottom free edges


222


and


224


. Shortened rollers


212


continue to guide and feed web


102


.




A pre-sealing mechanism


206


applies sufficient heat and pressure to web


102


to substantially flatten web


102


thereat, but not so much heat or pressure as to fuse the web sidewalls. This pre-sealing mechanism


206


substantially removes wrinkles that may exist in web


102


. A sealing mechanism


208


creates partial transverse seals for container


20


at the flattened web position. Sealing mechanism


208


is preferably of a type that utilizes either heated metal bars or electrical impulse sealing bars. Sealing mechanism


208


creates partial transverse seals


28


′ and


30


′ that extend substantially but not completely across sidewalls


22


and


24


. Mechanism


208


fuses a partial transverse seal from free edges


107




a


and


107




b


across sidewalls


22


and


24


to a point about one-half inch away from bottom free edges


222


and


224


. By not forming transverse seals completely across sidewalls


22


and


24


, there remains a portion along bottom free edges


222


and


224


which is useful for guiding and feeding web


102


and also for subsequent opening and filling of container


20


.




After forming partial transverse seals, a product is placed within container


20


. Container


20


is useful for containing products that are generally flowing in nature, such as small pieces of candy, granular products, and liquids. For example, with products of the type which have a flowing nature it is preferable that container


20


be oriented in a substantially vertical manner as it continues to move horizontally.

FIG. 5

schematically depicts a apparatus


200


in which a flowing product such as candy is being gravity fed from a hopper


214


into a container


20


. Container opening mechanism


216


spreads apart bottom free edges


222


and


224


as the motion of web


102


is momentarily halted. Mechanism


216


may use mechanical fingers to hold and spread apart edges


222


and


224


. Alternatively, mechanism


216


may incorporate suction devices that grasp and spread apart edges


222


and


224


.




After introduction of the product into container


20


, free edges


222


and


224


are fused together by bottom sealing mechanism


218


. Mechanism


218


places a wide sealing area on container


20


, such that a seal is formed that overlaps with partial transverse side seals


28


′ and


30


′. In this way, the approximate one-half inch not sealed by sealing mechanism


208


is instead sealed by mechanism


218


. Following the placement of a bottom seal, a cutting mechanism


230


severs adjacent containers


20


through the full transverse side seal


28


and


30


. It may also be necessary to trim some of the sealed bottom edge of container


20


.




Container


20


is also useful for larger products with a well defined shape, such as cheese and large candy bars. Web


102


may require reorientation based upon the type of product to be inserted within container


20


. For placement within container


20


of those products that are large and have a definite shape it is preferable that web


102


be in a substantially horizontal plane, such that free edges


222


and


224


are at about the same elevation as fastening strips


32


and


34


.

FIG. 6

is a perspective schematic of apparatus


400


, one embodiment of the present invention, for forming, filling, and sealing a container in a substantially horizontal manner. Apparatus


400


begins in a manner similar to that of apparatus


200


. Web


102


is fed by rollers


204


along a substantially horizontal path, preferably in a vertical orientation. Alternatively, web


102


may be pulled in a horizontally planar orientation. Fastener strips


32


and


34


are attached and sealed to web


102


, a slider


48


is placed on the strips, and a tamper evident seal, if desired, is attached.




In those embodiments in which web


102


is pulled by rollers


204


in a vertical orientation, there is a subsequent reorientation of web


102


to a horizontal plane. As web


102


passes through second roller set


204




b


there is a twist


402


of 90 degrees before web


102


passes through third set of rollers


204




c


. It is preferable to support the underside of the non-horizontal web


102


. This support may be in the form of a belt or roller conveyor, for example.




A spreading mechanism


216


′ holds free edge


224


and lifts it vertically, creating opening


404


within web


102


. In some embodiments it may be helpful to permit that portion of web


102


downstream of mechanism


216


′ to return toward mechanism


216


′, such that the lifting of free edge


224


does not unduly stress sidewall


22


. A product is placed within sidewalls


22


and


24


of web


102


by placement mechanism


225


and free edge


224


is brought back into contact with edge


222


. Transverse side seals


28


and


30


across web


102


are formed by sealing machine


208


′. Sealing machine


208


′ places a full transverse seal across web


102


. Sealing machine


208


′ must also separate sufficiently such that the product within container


20


may pass therebetween. Free edges


224


and


222


are then fused together by heat, ultrasonic energy, or other method by bottom sealer


218


′. Bottom sealer


218


′ applies a slightly narrower seal than bottom sealer


218


, because of the full transverse seal applied by sealing mechanism


208


′. A cutting mechanism


230


then severs container


20


from web


102


through the transverse seals.




While the invention has been illustrated and described in detail in the drawings and foregoing description, the same is to be considered as illustrative and not restrictive in character, it being understood that only the preferred embodiment has been shown and described and that all changes and modifications that come within the spirit of the invention are desired to be protected.



Claims
  • 1. A method for placing a product in a flexible recloseable container, comprising:feeding a web of flexible film; feeding a supply of tamper evident seals; feeding a supply of interlockable fastener strips; orienting a slider to a predetermined orientation; placing the slider on the fastener strips; attaching the fastener strips to the web of flexible film; attaching the tamper evident seals to one of the flexible web or the fastener strips; and placing a product within the web.
  • 2. The method of claim 1 wherein the tamper evident seal extends over the exterior of the fastener strips.
  • 3. The method of claim 1 wherein the tamper evident seal is located between the fastener strips.
  • 4. The method of claim 1 wherein said feeding the web is generally continuous.
  • 5. The method of claim 4 wherein said feeding includes forming the web in a generally tubular shape.
  • 6. The method of claim 5 wherein during said placing a product the container is in a substantially vertical orientation.
  • 7. The method of claim 1 which further comprises stopping the web of flexible film before said placing a product.
  • 8. The method of claim 7 wherein said placing the slider is during said stopping the web.
  • 9. The method of claim 7 wherein said feeding includes forming the web in a generally folded shape.
  • 10. The method of claim 9 wherein during said placing a product the container is in a substantially horizontal orientation.
  • 11. The method of claim 1 which further comprises moving the slider relative to the fastener strips before said placing a product.
  • 12. The method of claim 1 wherein said placing the slider is by a rotable selector wheel.
  • 13. The method of claim 1 which further comprises spreading apart the feet of the slider said before said placing the slider.
  • 14. The method of claim 1 which further comprises dividing the web into a plurality of containers by forming a seal generally across the film.
  • 15. The method of claim 1 which further comprises spreading apart a closure element of the fastener strips.
  • 16. The method of claim 1 wherein said feeding includes forming the web in a generally tubular shape.
  • 17. The method of claim 1 wherein said feeding includes forming the web in a generally folded shape.
  • 18. The method of claim 1 wherein during said placing a product the container is in a substantially vertical orientation.
  • 19. The method of claim 1 wherein during said placing a product the container is in a substantially horizontal orientation.
  • 20. A method for placing a product in a flexible recloseable container, comprising:feeding a web of flexible film; feeding a supply of interlockable fastener strips; orienting a slider to a predetermined orientation; spreading apart the feet of the slider; placing the slider on the fastener strips; attaching the fastener strips to the web of flexible film; dividing the web into a plurality of containers by forming a seal generally across the film; and placing a product within a container.
  • 21. The method of claim 20 which further comprises feeding a supply of tamper evident seals and attaching the seals to one of the flexible web or the fastener strips.
  • 22. The method of claim 21 wherein the tamper evident seal extends over the exterior of the fastener strips.
  • 23. The method of claim 21 wherein the tamper evident seal is located between the fastener strips.
  • 24. The method of claim 21 wherein said feeding the web is generally continuous.
  • 25. The method of claim 24 wherein said feeding includes a forming the web in a generally tubular shape.
  • 26. The method of claim 25 wherein during said placing a product the container is in a substantially vertical orientation.
  • 27. The method of claim 21 which further comprises stopping the web of flexible film before said placing a product.
  • 28. The method of claim 27 wherein said feeding includes forming the web in a generally folded shape.
  • 29. The method of claim 28 wherein during said placing a product the container is in a substantially horizontal orientation.
  • 30. The method of claim 20 wherein said feeding the web is generally continuous.
  • 31. The method of claim 20 which further comprises stopping the web of flexible film before said placing a product.
  • 32. The method of claim 20 wherein said placing the slider is during said stopping the web.
  • 33. The method of claim 20 which further comprises moving the slider relative to the fastener strips before said placing a product.
  • 34. The method of claim 20 wherein said placing the slider is by a rotatable selector wheel.
  • 35. The method of claim 20 which further comprises spreading apart a closure element of the fastener strips.
  • 36. The method of claim 20 wherein said feeding includes forming the web in a generally tubular shape.
  • 37. The method of claim 20 wherein said feeding includes forming the web in a generally folded shape.
  • 38. The method of claim 20 wherein during said placing a product the container is in a substantially horizontal orientation.
  • 39. The method of claim 20 wherein during said placing a product the container is in a substantially horizontal orientation.
  • 40. An apparatus for placing a product in a flexible recloseable container, comprising:means for feeding a web of flexible film and a supply of fastener strips; a slider for locking and unlocking the fastener strips, said slider having feet, said slider having a predetermined orientation; means for placing said slider on the fastener strips, said placing means including a rotatable selector wheel, said placing means spreading said feet apart before placing said slider on said fastener strips; a sealing mechanism for forming at least a partial seal across the film, said sealing mechanism dividing said flexible film into a plurality of containers; and means for placing a product within one of said plurality of containers.
  • 41. The apparatus of claim 40 which further comprises means for moving the slider relative to the fastener strips such that the fastener strips are generally closed.
  • 42. The apparatus of claim 40 which further comprises a guide for orienting the fastener strips to accept said slider.
  • 43. The apparatus of claim 40 wherein said means for feeding stops the web when said selector wheel rotates to place said slider on the fastener strips.
  • 44. The apparatus of claim 40 wherein said means for feeding forms the flexible film into a generally tubular shape.
  • 45. The apparatus of claim 44 wherein said means for placing places the product within the web in a generally vertical manner.
  • 46. The apparatus of claim 40 wherein said means for feeding forms the flexible film into a generally folded shape.
  • 47. The apparatus of claim 46 wherein said means for placing places the product within the web in a substantially vertical orientation.
  • 48. The apparatus of claim 46 wherein said means for placing places the product within the web in a substantially horizontal orientation.
CROSS REFERENCE TO RELATED APPLICATIONS

This application is a continuation of U.S. patent application Ser. No. 09/796,262, filed Feb. 28, 2001, which is a continuation of U.S. patent application Ser. No. 09/370,053, filed Aug. 6, 1999 which issued as U.S. Pat. No. 6,209,287 on Apr. 3, 2001, which is a continuation of U.S. patent application Ser. No. 08/965,722, filed Nov. 7, 1997 which issued as U.S. Pat. No. 5,956,924 on Sep. 28, 1999, all of which are incorporated herein by reference.

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Continuations (3)
Number Date Country
Parent 09/796262 Feb 2001 US
Child 10/022451 US
Parent 09/370053 Aug 1999 US
Child 09/796262 US
Parent 08/965722 Nov 1997 US
Child 09/370053 US