[go: up one dir, main page]

EP0348960A1 - Barquetter thermoformées avec opercules arrachables - Google Patents

Barquetter thermoformées avec opercules arrachables Download PDF

Info

Publication number
EP0348960A1
EP0348960A1 EP89111816A EP89111816A EP0348960A1 EP 0348960 A1 EP0348960 A1 EP 0348960A1 EP 89111816 A EP89111816 A EP 89111816A EP 89111816 A EP89111816 A EP 89111816A EP 0348960 A1 EP0348960 A1 EP 0348960A1
Authority
EP
European Patent Office
Prior art keywords
lid
shell
edge
sealed
tear
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.)
Granted
Application number
EP89111816A
Other languages
German (de)
English (en)
Other versions
EP0348960B1 (fr
Inventor
Hugo Boeckmann
Steven Ausnit
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zip Pak Inc
Original Assignee
Zip Pak Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zip Pak Inc filed Critical Zip Pak Inc
Publication of EP0348960A1 publication Critical patent/EP0348960A1/fr
Application granted granted Critical
Publication of EP0348960B1 publication Critical patent/EP0348960B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/22—Details
    • B65D77/30—Opening or contents-removing devices added or incorporated during filling or closing of containers
    • 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
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/18—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for making package-opening or unpacking elements
    • B65B61/188—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for making package-opening or unpacking elements by applying or incorporating profile-strips, e.g. for reclosable bags

Definitions

  • the present invention relates to improvements in packaging in plastic trays and, in particular, to an improved tray construction and a method for manufacturing the trays, the lid being provided with a reclosable zipper.
  • a variety of items, including food, such as B. cheese, bacon, prepared meat are sold in bowl-shaped containers or packaging. These packages are generally made of semi-flexible thermoplastic material which is inexpensive to manufacture and which provides certain rigidity and protection for the product. Such trays are usually closed with a lid which is placed over it and which can be torn off the tray in order to access the contents.
  • a Replacement cover e.g. B. made of foil or Saran.
  • an object of the present invention to provide an improved tray for the distribution of products which has a lid which can be closed again to protect the products after the tray has been opened.
  • Another purpose of the invention is to provide a reclosable shell, the lid of which is provided with tamper evident features, so that the shell can be reused and reclosed until it is purchased by the customer, but is completely sealed and opens every time, thereby the contents would be exposed to the air, would be recognizable.
  • Another purpose of the invention is to provide an improved method of closing a reclosable package with the aid of a repeatable, fast-running one Process.
  • Another purpose of the invention is to provide an improved packaging tray which is suitable for food and has a moisture-resistant, reclosable zipper on the lid, the arrangement and construction of the lid and the zipper offering improvements over previously known methods and arrangements.
  • the bowl is made of a semi-rigid but flexible thermoplastic material, which means that the lid can be attached either by hot gluing or with the help of adhesives.
  • the lid is preferably made of a transparent material such as polyethylene or, if necessary, a layered film with barrier properties suitable for food preservation. With a view to reducing the production costs, these can be very thin and can only be provided with an opening and reclosing feature.
  • the reclosable feature results from the attachment of a continuous flexible zipper with stripes along which interlocking profiles consisting of ribs and recesses run.
  • the strips are constructed to be flat in one embodiment lie and thereby adjust the horizontal cover and run parallel to it and stand upright in another embodiment and are provided with vertical pull tabs.
  • the lid can be attached in the simplest way so that the contents of the shell are reliably and completely sealed.
  • the closing strips can be arranged directly above the lid without impairing its sealing effect, and nevertheless form an opening through which the content can be removed and which at the same time creates a closure which can be reliably reclosed to prevent the content from penetrating moisture and to shield air or contaminants, and this is particularly advantageous when the tray is used for food distribution.
  • trays (11) which have a hollow or recessed central part for receiving food, upright side walls and an edge (12) which is around the edge at the upper end of the side walls runs continuously.
  • a lid (13) is placed on the bowl to protect the contents and the edges of the lid material are sealed off from the bowl edge.
  • the lid (13) is all around Periphery, as shown at (14), sealed at the edge (12).
  • this can be done in a continuous manufacturing process, with the flexible cover material being advanced as indicated by the arrow in Fig. 1 to cover the tray, and the trays are joined together at the ends and the covering material is made in one piece to join adjacent trays as shown by the dotted line (20).
  • the lid (13) is sealed at the edge (12) of the shell by suitable means, e.g. B. by joining the plastics by ultrasonic waves, glue, vibration welding, HF welding or by other known sealing methods.
  • a reclosable fastening device is separated from the covering material, the fastening device being formed on the edge of the shell (11) with an upper flange (15) and a lower flange (16). Between the flanges there are rib profiles which can be reclosed and opened by pressure, with the rib element at (17) and the receiving element at (18). If you grasp the upper tear-open flange (15), the lid can be opened along the edge and the contents are exposed. If you push the upper tear-open flange (15) downwards, the rib and groove elements become reassembled and seal the contents against penetrating air and moisture.
  • FIGS. 2A, 2B and 2C illustrate different forms of the fastening device shown in Figures 1 and 2, which is arranged on the edge of the shell.
  • the fastening devices in FIGS. 2A, 2B and 2C can be made in one piece with the film of the covering material (such as, for example, with the lid shown in (13) in FIG. 2 or separately as shown in FIG. 1), or it can a re-opening zipper made separately and attached to the lid.
  • the shell cover can be seen at (13a) and a web (8a) of the fastening device is shown as consisting of one piece with the cover, although the web (8a) could also be glued to the cover.
  • the fastening device has a rib profile element (17a) which can be pressed into a receiving groove element (18a) by means of a press fit.
  • the groove fastening device rests on a web (16a) which is connected to an edge (12a) of a shell (11a).
  • the foot (16a) of the fastening device consists of one piece with a flange (15a) of the upper fastening part with a weak point (9a) which is formed in the material (15a and 16a).
  • the continuous material (15a and 16a) leaves neither Air still penetrate moisture so that a complete protective seal for the shell (11a) is present until the contents are to be used.
  • the shell can be designed in such a way that the rib element (17a) and the groove element (18a) engage in one another, or this engagement can be effected only after the shell has originally been opened
  • FIG. 2B illustrates yet another form of closure for the side of a shell, as shown in FIGS. 1 and 2.
  • a bowl (11b) has an edge (12b).
  • a cover (13b) lies above the bowl and is to be firmly connected to the edge.
  • a foot flange (16b) is shown as a permanently integrated extension of the cover.
  • the fastening device consisting of the foot flange (16b) and an upper flange (8b), can however be connected to the cover (13b) in such a way that the fastening strip can be manufactured separately.
  • the fastening strip is provided with the lower foot flange (16b) and a groove profile element on it.
  • the upper part of the fastening device has a rib element (17b) which engages in the groove element (18b).
  • the upper strip of the fastening device has a tear-open flange (15b) which extends from the upper flange (8b).
  • the foot flange (16b) is provided with a weak point at (9b).
  • the weak point allows the foot flange at (9b) to be broken open, but is impermeable to moisture and air, so that the shell contents remain completely sealed until the Shell should be opened by the user.
  • the user thus has a tamper-proof cover, so that he can visually recognize whether the shell was opened before he bought it or not. If the buyer wants to use the content, he pulls the tear-open flange (15b) upwards, so that the weak point (9b) breaks and the content becomes accessible.
  • the shell can then be resealed by squeezing the interlocking rib and groove members (17b) and (18b) to engage them.
  • Fig. 2C illustrates yet another form of reclosable fastening device for the edge of a shell (11c).
  • the bowl has an edge (12c).
  • a fastening strip is connected at the edge of the shell to a lower foot flange (16c) which is glued to the edge (12c).
  • the upper part of the fastening strip has a web (8c) which either consists of one piece with a cover (13c) for the shell or can be glued to it.
  • the fastening device can be manufactured separately, if desired.
  • the upper part of the fastening strip has a rib element (17c) which, due to its design and size, can snap into a groove element (18c).
  • the upper strip has a tear-open flange (15c) which at the end, as shown at (15'c), is bent downwards.
  • the foot flange for the lower fastening strip is bent at the end, as in (16′c), and a flexible sealing film (7c) is between the ends (15'c and 16'c) attached and glued to seal the space between the ends.
  • This continuous sealing film (7c) comes to lie between the profiles (17c and 18c) and forms an air and moisture-tight seal to protect the contents, which must be broken open in order to access the shell contents so that the buyer and user know that the bowl was not opened before the purchase.
  • each of the arrangements shown in Figs. 2A to 2C can be designed so that the top strip is integral with the lid or can be separately manufactured and attached to the lid to form a tamper evident closure for the bowl
  • FIGS 3 and 4 show a modified version of the reclosable shell closure.
  • a shell (21) has a continuous edge (22) on its upper edge and a flexible cover (23) is placed over the shell and sealed against the edge.
  • the lid (23) can consist of a continuous one-piece film, which has a uniform thickness and is inexpensive, and can also consist of thin transparent material so that the contents of the shell can be seen.
  • the shell base made of a flexible thermoplastic material and the lid made of a light thermoplastic material
  • suitable materials are available for both the lid and the shell, each of which has particularly optimal properties, and yet these can Elements are easily heat-sealed using a mandrel or other heat transfer element that is continuously applied to the edge of the material.
  • a closure unit (24) can be attached to the lid (23) in advance or attached to it after the lid is in place.
  • the closure is preferably heat-sealed with the lid, so that such a heat seal takes place before the lid is placed on the shell.
  • the closure unit can be attached to the lid by various known connection or attachment methods, such as. B. by ultrasonic welding of the plastic, with the help of glue by vibration welding, HF welding or the like. It will be understood that such known attachment methods can be used to connect the various fastener structures to the lids as described below.
  • Fig. 4 the closure (24) of a one-piece, folded-over unit is shown, which contains laterally upright tear-open flanges (25 and 26) which run downwards and are joined to a spread foot (27) which is heat-sealed to the cover (23) becomes.
  • the zipper (24) has matching, engaging, reclosable rib and groove profiles (28 and 29) on the inner surfaces of the tear flanges (25 and 26).
  • the rib and groove can be separated by pulling apart the tear-open flanges and performing a heat seal, as a result of which the foot (27) is attached to the lid surface.
  • a continuous weak point (30) can also be provided so that the lid can be opened during use and releases the contents.
  • a preferred embodiment of the weak point (30) is that one can use the tool with which the feet (27) are sealed on the cover to simultaneously produce the continuous weak point.
  • a perforating wheel can be used, which is moved downwards in the longitudinal direction between rib and groove profiles after they have been separated in order to cut through the foot (27) and the cover (23).
  • these perforations were sealed by heat sealing a strip over the perforations, no sealing strip is required for products that do not require a barrier film.
  • an additional seal can be made to cause accidental opening in the store by means of adhesive elements which are arranged either at (25a) above the profiles or at (25b) below the profiles. The adhesive elements are not shown in the assembled state, but would be connected to one another when filling and closing the shell in order to adhere to one another and thereby additionally separate the rib and groove prevent and to further seal against moisture and air.
  • a tear flange (25) is shown so that it is longer than the other tear flange (26), so that it is easier to grasp and rib and groove can be pulled apart at the beginning, so that the lid along the Perforation line (30) can be opened and the content becomes accessible.
  • the rib and groove (28 or 29) can be pressed together, so that the packaging is resealed with a different content until further use and for removing further parts of the contents or for the purpose of using the packaging.
  • FIGS 5 and 6 illustrate another form of closure, wherein the zipper consists of individual, separate strips and the zipper (35) is shown to have strips with upstanding tear flanges (33 and 34). Again, one of the tear-open flanges (33) is longer than the flange (34) in order to facilitate gripping to pull apart the rib (39) and the receiving groove (38).
  • Each of the strips is L-shaped and has a foot web (36 and 37) which extends laterally outwards, parallel to the surface of a cover (32).
  • the lid (32) is sealed along the edge with the edge of a shell (31), on which the lid is placed.
  • the lower webs (36 and 37) are with the flat Material of the lid (32) connected in the manner shown in Fig. 6 by adhesion or heat sealing. Again, a continuous vulnerability such as B. a perforation (40) between the zipper strips along the lid so that when the rib and groove are pulled apart by means of the tear flanges, the lid can be opened along the line (40) and the content is accessible.
  • a perforation (40) between the zipper strips along the lid so that when the rib and groove are pulled apart by means of the tear flanges, the lid can be opened along the line (40) and the content is accessible.
  • FIGs 7, 8 and 9 respectively show different ways in which the ends of the zipper can be sealed between the zipper strips for convenience, appearance or reliable protection against leaks.
  • Fig. 7 shows a shell (41) with a continuous flat lid (42) which is attached to the edge thereof.
  • the strips (43 to 44) protrude above the lid and are fastened to the flat lid surface with web parts (45 and 46).
  • the web portions (45 and 46) on the lid would be sealed in one operation and the end flanges in a second, earlier operation, offset from the first, sealed together at predetermined locations depending on the size of the shell to which the lid is attached .
  • the ends of the flanges (43 and 44) are sealed together as shown at (47 and 48) and form a flat web which cannot be separated and which prevents air from entering at the end between the flanges (43 and 44). if the ribs and groove profiles are attached, which are not shown here, but which are located on the inner surface and interlock.
  • a bowl (49) has a continuous, flat, thin lid (50) which protects the contents and is sealed to the edge of the bowl.
  • An upright zipper strip is provided with tear-open flanges (51 and 52), on the opposite inner surfaces of which there are interlocking rib and groove profiles.
  • tear-open flanges At the lower part of the tear-open flanges there are webs (53 and 54) which are sealed with the cover (50).
  • the ends of the tear-open flanges are sealed together at (55 and 56) and then flattened and sealed flat with the cover (50) at the ends, so that leaks between the flanges when the container is closed are additionally avoided. With this arrangement, access to the shell is more limited.
  • the content is accessible in that the tear-open flanges are separated and an opening is made in the lid between the flanges, so that food or other materials in the bowl become accessible.
  • a bowl (57) has a flat lid (58) which is sealed to the bowl edge.
  • a zipper extends in the longitudinal direction parallel to the side edges at the middle of the shell and the zipper has tear flanges (59 and 60). At the foot of the tear-open flanges there are webs (61 and 62) which are sealed to the surface of the cover (58), as in FIG. 8, but which are then cut along the line (63) so that they stand upright .
  • the arrangement would be used when barrier properties to protect the shell contents are not required.
  • the shell is shown in each case to have a rectangular shape and the zipper extends downward at the edge or at the center parallel to the side edges, it will be understood that shells or containers of different shapes can be used and that an arrangement of the zipper parallel to the side edges is not essential, but that they can form an angle or adopt another arrangement.
  • the zipper is formed separately from the lid and shown as being on the edge of the shell, but it can also be arranged on the inside of the edge. If the opening is in the middle, as shown in the arrangements according to FIGS. 3, 5, 7 to 9, the semi-flexible shell is opened by forces acting at the end, so that the contents are easily accessible.
  • the zipper strips must be separated before the end forces are exerted to open the lid, and the continuous weak point must be broken.
  • the contents of the shell can also be accessed by pulling apart the zipper flanges.
  • Fig. 10 illustrates a construction in which the fastener is part of the lid and arranged to prevent unwanted separation of the profiles.
  • the lid at (64 and 64a) is shown in two parts, an opening being present between the said parts and the upper part of the lid extending over the opening, so that an upper tear-open flange (65) is formed.
  • the lower part below the opening is folded over at (68) so that a tear-open flange (69) is created.
  • Rib and groove elements (66 and 67) are located on the inner surfaces of the tear-open flanges (65 and 69), which come into engagement with one another.
  • the lower flange which is folded over at (68), has a hinge function and the folded over part (68) forms the hinge, which prevents opening by bending the lid or the shell.
  • Lids and profiles can be made in one piece, and in this case the embodiment shown in Figures (14 or 15) occurs.
  • FIG. 11 illustrates a further embodiment, which is approximately similar to that from FIG. 10, but the fastening strips, instead of being made in one piece with the cover material, are separated from one another and attached to the cover.
  • the lid has a part (70) and a part (71) which run towards each other and form an opening between them.
  • Attachment strips include an upper strip (72) attached to the top cover layer (71) and a lower strip (73) attached to (74) on lower cover part (70) is attached.
  • the point (74) where the strips are attached is offset from the profiles of the strip so that a hinge is created at (74), which prevents accidental separation of profiles and opening.
  • FIGS. 11A and 11B show modified embodiments of a fastening strip for sealing a shell cover, approximately similar to the embodiment according to FIG. 11
  • a fastening strip consisting of an upper strip (72a) and a lower strip (70a) is attached in such a way that the upper strip with a cover (71a) for the shell and the lower strip (70a) is glued to the edge of the shell.
  • the fastening strips have mating profiles and between the ends of the upper strip (72a) and the lower strip (70a) there is a sealing film (5a) which seals the ends. This seal creates a moisture and air seal to protect the shell contents.
  • the seal (5a) is broken to make the contents of the bowl accessible and the fastening strip is then closed and opened in the usual way to close the bowl again or to make it accessible.
  • Weak point (6a) may be provided so that the sealing strip can still be combined with a fastening element in order to achieve an even better air and moisture seal.
  • FIG. 11B shows another form of the fastening strip, the fastening element having a lower strip (70b) and an upper strip 72b) which are connected by interlocking rib and groove elements.
  • Upper and lower strips are connected by a web part (4b ) joined together, which is glued to the lid (71b) of the shell.
  • the lower strip (70b) is then glued to the edge of the shell.
  • the lower strip has a continuous weak point (6b), which can be broken open to access the contents of the bowl.
  • the buyer pulls the top strip up and breaks the weak point (6b).
  • the user can visually determine whether the closure has been opened so that the arrangement forms a tamper evident closure. After the weak point has broken open, the shell can be opened and closed again by pulling the fastening strips apart and putting them back together.
  • FIG. 12 shows a further arrangement in which a fastening strip to be opened is connected to cover material (76) on one side of the opening and to cover material (75) on the other side of the opening.
  • Fastening strips (77 and 78) are located in the opening.
  • the fastening strip (77) is attached to the upper cover material (75).
  • the lower cover material (76) is folded over at (80) so that a flap (81) is formed. This is attached with the other edge to the lower fastening strip (78).
  • the lower folded part also forms a second hinge at (80), which essentially forms a further pull-out fold which allows additional material which counteracts an unintentional separation of the profiles by loading the cover or the shell.
  • Figure 13 shows the concept of a hinge zipper strip with the fastener of the fastener in an upright position.
  • a lid has an opening at (130) and edges that extend upward on the sides of the opening.
  • a fastening element for the opening has a lower web part (133) and an upper web part (134), which are to be fastened on both sides of the opening to the folded surfaces of the cover.
  • the upright sealing strip (131) extends upwards and has a profile on the inner surface.
  • the closure has an additional strip part (136) with a profile that matches the profile of the strip (131).
  • the strip (136) is on the upper edge part (134 at 135) with an upright part (132) of the Lid connected so that at (135) a hinge is created, which is offset from the profiles and counteracts an opening when the sides of the lid are stressed near the opening (130).
  • Fig. 14 shows another arrangement in which a one-piece zipper strip (82) is constructed so that it can be attached to a flat lid on a tray.
  • the shell cover can be provided with a continuous weak point, which is not shown here, such as e.g. the perforation line (30) according to FIG. 4 or the perforation line (40) according to FIG. 6.
  • the zipper strip has lateral web parts (83 and 84) that can be attached to the lid surface.
  • the zipper may be integral with the lid, a lid originally being formed from a pressed material so that rib and groove profiles (86 and 87) are integrated therein.
  • the strip runs continuously and is folded over at the top edge.
  • the folded part has continuous weak points, such as B. the perforations (88 and 89) so that the upper part of the strip can be torn off in use. This creates a tamper evident closure in that the buyer can see that the container has not been opened before purchase. In use, the upper part is torn off, so that upright tearing flanges remain to separate the rib and groove elements from one another and the interior of the shell to make it accessible.
  • FIG. 15 a construction similar to that of FIG. 14 is used, but at (96) there is a fragile seal or joint under the rib and groove elements (93 and 94) on the strip (90) .
  • the fastening strip has lower web parts (91 and 92) which either consist of one piece with the lid or are attached to it.
  • the strip is folded over at the outer edge (95) and is continuous, and the outer edge is torn open for use, so that upright tearing flanges are formed, as a result of which the rib and groove elements are torn apart.
  • a continuous, one-piece zipper strip (97) is again provided.
  • the strip has lateral web parts (98 and 99) which are part of the lid or are attached to it.
  • the strip is folded over at (100).
  • the profiles (101 and 102) are located on the inner surface of the strip.
  • a bridge-shaped seal (103) is attached to the inner surfaces of the strip below the profiles to form a moisture and airtight connection point. So even if the outer part (100) of the strip is removed and rib and groove elements are torn apart, the buyer can determine whether the container was tightly sealed and the bridge-shaped part (103) can get to the shell contents, be cut open or torn open.
  • the bridge-shaped part (103) can be made in one piece with the fastening strip (97) or be used separately, and the bridge-shaped strip can be used instead of the folded part of the strip (100), which can be cut open by the end user before use, whereby the part (103) then forms the tamper evident seal.
  • Figure 17 shows a manner in which a continuous series of trays are handled and sealed.
  • the semi-flexible shells (104) are continuously manufactured and fed from right to left, as shown in Fig. 17.
  • a covering material is drawn off from a drain roller (106), and the material to be placed over the tray is fed in at (105).
  • Zipper strips (108) arranged at intervals are already attached to the cover material, and a pressure roller (107) presses the cover material onto the top of the shells. The strips are shown in separate units (108) so as to match the tops of the trays.
  • a heat seal mandrel (109) is pressed onto the top of the cover to seal the edges on the edge of the tray.
  • a knife (109a) separates the bowls from the continuous feed, creating a single, separate bowl on which the lid is already in place. The contents are probably filled into the bowl immediately before the lid is put on.
  • Fig. 19 illustrates in detail the pressing of the mandrel (109).
  • the mandrel is shown with a rectangular shape that matches the shape and size of the shell edge (104).
  • the unique feature of the mandrel are the slots (110 and 111) which are arranged to match and receive the upright zipper strips (108).
  • Fig. 20 illustrates a similar process in which the zipper strip is to be flattened so that it takes the form shown in Fig. 8 or 9.
  • a mandrel (122) is also rectangular in shape to match the shape and size of the edge of a shell (117) and a heat seal cover material (118).
  • An upright zipper strip (119) is flattened and sealed at the points (120 and 121) with the lid.
  • Figure 18 illustrates the application of the principles to trays pressed in double rows with one row of trays at (112) and a second row at (113).
  • Covering material (114) is fed above the tray after it is filled and advanced with the material, and the trays move in the direction indicated by arrow (128).
  • the upright zipper strips (115 and 116) are already attached to the cover material (114).
  • heating rods (125 and 126) move in the directions indicated by arrows to achieve a good seal and are shown in their final position by the dotted line (124).
  • a bowl (122) has a lid (123) which is provided with an upright zipper strip (127) and the bars (125 and 126) heat seal the lid (123) to the edge and also provide the end seal on the vertical zipper strip so that the final seal will look like that shown in Fig. 7 shown.
  • the heating rods (125 and 126) are shown in more detail, but rather schematically, in FIG. 22.
  • Suitable devices such as. B. an embedded heating element, heat the rods, and to seal the lid with the top of the shell, the rods are lowered vertically onto the lid to connect this by heat sealing with the edge of the shell.
  • the rods are U-shaped and have a size that corresponds to the size of the bowl edge.
  • the bars are brought together laterally so that the base surfaces of the U-piece (128a and 129a) on one side of the shell and (128b and 129b) on the other side come to rest against the upright tearing flange portions of the fastener to glue the ends.
  • Suitable mechanical devices are provided to move the U-shaped heating elements vertically downwards against the shell, as is schematically indicated by the vertical line (130). Suitable mechanical devices are also provided for laterally moving the U-shaped sealing bars, as indicated schematically by the horizontal arrows (131). Alternatively, the rods can be positioned diagonally in one step.
  • the upright flanges move when the user separates the fastener (24) at the top and then the end walls pushes inwards, apart, so that an opening is created and the user can remove the contents from the tray or insert new contents into the tray.
  • This type of shell normally has sufficient spring force to spring back when released so that the flanges on the side of the flexible fastener move towards each other again so that the profiles can be put together again.
  • the zipper flanges also cause one when pulled apart Opening to the bowl.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Closures For Containers (AREA)
  • Bag Frames (AREA)
EP89111816A 1988-06-29 1989-06-29 Barquetter thermoformées avec opercules arrachables Expired - Lifetime EP0348960B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US213161 1988-06-29
US07/213,161 US4896775A (en) 1988-06-29 1988-06-29 Zippered thermal form tray system

Publications (2)

Publication Number Publication Date
EP0348960A1 true EP0348960A1 (fr) 1990-01-03
EP0348960B1 EP0348960B1 (fr) 1992-05-13

Family

ID=22793964

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89111816A Expired - Lifetime EP0348960B1 (fr) 1988-06-29 1989-06-29 Barquetter thermoformées avec opercules arrachables

Country Status (5)

Country Link
US (1) US4896775A (fr)
EP (1) EP0348960B1 (fr)
JP (1) JPH0257566A (fr)
AU (1) AU615311B2 (fr)
DE (1) DE58901385D1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19802016B4 (de) * 1997-05-13 2011-09-29 Abro Weidenhammer Gmbh Behälter mit Verschlußmembran
DE102020107324A1 (de) 2020-03-17 2021-09-23 Mondi Ag Tiefziehfolienverpackung

Families Citing this family (47)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4892414A (en) * 1988-07-05 1990-01-09 Minigrip, Inc. Bags with reclosable plastic fastener having automatic sealing gasket means
US5188461A (en) * 1988-10-17 1993-02-23 Schurpack, Inc. Packing, method of manufacturing same, and strip material therefor
US5238306A (en) * 1989-05-19 1993-08-24 Reynolds Consumer Products, Inc. Method of producing a sealing system for a reclosable webbed-wall package, and system made
US5024537A (en) * 1990-01-08 1991-06-18 Zip-Pak Incorporated Tape carried pre-cut zipper
US5085031A (en) * 1990-02-15 1992-02-04 Zip-Pak Incorporated Transverse zipper application for horizontal form, fill and seal machine
US5063639A (en) * 1990-02-23 1991-11-12 Zip-Pak Incorporated Zippered closure for packages
US5405629A (en) * 1990-04-05 1995-04-11 Oscar Mayer Foods Corporation Multi-seal reclosable flexible package for displaying thinly sliced food products
US5058761A (en) * 1990-09-10 1991-10-22 Bryan Foods, Inc. Reclosable package and a base portion of the package
CA2124334A1 (fr) * 1991-11-26 1993-06-10 Robert C. Stolmeier Sac refermable et conteneur
US5782733A (en) 1992-10-26 1998-07-21 Innoflex Incorporated Zippered film and bag
US5358334A (en) * 1993-02-11 1994-10-25 Reynolds Consumer Products Inc. Reclosable profile strip with joining web
US5557907A (en) * 1995-02-24 1996-09-24 Illinois Tool Works Inc. Transverse zipper system
US6112928A (en) * 1995-07-28 2000-09-05 Box Ease International Foldable self-standing container with method of manufacture and bulk dispenser
US5738177A (en) * 1995-07-28 1998-04-14 Black & Decker Inc. Production assembly tool
EP1798156A1 (fr) * 1995-08-09 2007-06-20 James Worth Yeager Film équipé de profilés refermables pour la fabrication de sachets
US5651462A (en) * 1995-08-23 1997-07-29 Reynolds Consumer Products Inc. Rigid reclosable packaging
US5806984A (en) * 1996-07-03 1998-09-15 Innoflex Incorporated Recloseable bag with profile strip fastener assembly
US5951453A (en) * 1996-11-15 1999-09-14 Innoflex Incorporated Recloseable bag assembly and method of making same
US6376035B1 (en) * 1996-12-05 2002-04-23 Pactiv Corporation Zipper fins for plastic bags
US6079878A (en) 1997-04-11 2000-06-27 Yeager; James W. Reclosable bag with profile strip fastener assembly, and bag body
US5829884A (en) * 1997-06-19 1998-11-03 Innoflex Incorporated Form fill and seal package with one-way vent
FR2775215B1 (fr) * 1998-02-25 2000-05-12 Flexico France Sarl Procede et dispositif de formation de fermetures etanches pour sachets
FR2778362B1 (fr) * 1998-05-05 2000-07-28 Flexico France Sarl Procede de realisation de sachets comportant des profiles de fermeture actionnes par curseur
DE19859042A1 (de) * 1998-12-21 2000-06-29 Convenience Food Sys Bv Wiederverschließbare Kunststoffverpackung mit mindestens einer Noppe
US6325239B2 (en) 1999-04-22 2001-12-04 The Procter & Gamble Company Stackable, self-supporting container with sliding mechanical closure
US6360513B1 (en) 1999-05-11 2002-03-26 Sargento Foods Inc. Resealable bag for filling with food product(s) and method
US20010017947A1 (en) * 1999-05-11 2001-08-30 Sargento Foods Inc. Resealable bag for filling with food product (s) and method
US6264366B1 (en) * 1999-05-14 2001-07-24 Reynolds Consumer Products, Inc. Reclosable closure arrangement having encapsulated zipper closure, reclosable profiles, and slider device; and methods
US6394299B1 (en) * 2000-01-11 2002-05-28 The Procter & Gamble Company Slider for opening or closing a reclosable fastener disposed in a two dimensional plane
US6467957B2 (en) 2000-02-03 2002-10-22 Innoflex Incorporated Adhesive closure strip, bag and method
US6874937B2 (en) * 2001-12-18 2005-04-05 Illinois Tool Works Inc. Reclosable packaging having slider-operated zipper with tamper-evident membrane
US7048442B2 (en) * 2002-05-15 2006-05-23 Illinois Tool Works Inc. Reclosable packaging for scoopable products and method of manufacture
US7341160B2 (en) 2002-08-08 2008-03-11 Pactiv Corporation Reclosable package having an accessible zipper and a method for making the same
US7819279B2 (en) * 2002-08-14 2010-10-26 International Molded Packaging Corporation Latchable container system
WO2004016511A1 (fr) * 2002-08-14 2004-02-26 International Molded Packaging Corporation Systeme de contenant verrouillable
AT414120B (de) * 2003-09-25 2006-09-15 Die Kaesemacher Kaeseproduktio Behälter zur aufnahme von lebensmitteln
EP1652791A1 (fr) * 2004-10-26 2006-05-03 Cryovac, Inc. Récipient refermable pour aliments
US20060177156A1 (en) * 2005-02-09 2006-08-10 Illinois Tool Works Inc. HFFS slider bags with zipper in fin seal
US7437805B2 (en) * 2006-06-23 2008-10-21 Edward Alan Berich Reclosable storage bag closure with internal valving
US7857515B2 (en) * 2007-06-15 2010-12-28 S.C. Johnson Home Storage, Inc. Airtight closure mechanism for a reclosable pouch
US20090129707A1 (en) * 2007-11-15 2009-05-21 Illinois Tool Works Inc. Reclosable package with zipper and slider in the fin seal
FR2963927B1 (fr) * 2010-08-17 2012-09-14 S2F Flexico Sachet d'emballage inviolable
US11214397B2 (en) 2013-04-15 2022-01-04 Illinois Tool Works Inc. Machine direction, transverse direction and angled pre-applied zippers in the angled and transverse direction
WO2015114665A2 (fr) * 2014-01-30 2015-08-06 Ashok Chaturvedi Procédé de fabrication d'emballages possédant une fermeture à glissière refermable sur un premier panneau et emballage associé
US10000303B2 (en) 2015-02-13 2018-06-19 Direct Pack, Inc. Container comprising integral film lid
US9475615B2 (en) * 2015-02-24 2016-10-25 Gateway Packaging Company Reclosable label
PL242136B1 (pl) 2019-02-08 2023-01-23 Elplast Europe Spolka Z Ograniczona Odpowiedzialnoscia Zamknięcie strunowe z zabezpieczeniem przed otwarciem oraz opakowanie z zamknięciem strunowym z zabezpieczeniem przed otwarciem

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1010738A (en) * 1962-05-17 1965-11-24 Flexigrip Ltd Improvements relating to flexible strip fasteners
DE2147951A1 (de) * 1971-06-15 1973-03-29 Reynolds Aluminiumwerke Gmbh Deckel fuer einen einseitig offenen behaelter, insbes. fuer lebensmittelpackungen
FR2546481A1 (fr) * 1983-05-27 1984-11-30 Flexico France Sarl Sachet inviolable, du type en matiere plastique extrudee, a bandes de fermeture a profiles d'accouplement; bandes de fermeture destinees a equiper un tel sachet
FR2618411A1 (fr) * 1987-07-24 1989-01-27 Valoine Sarl Charcuterie Recipient pour emballage de denrees alimentaires, ferme par opercule arrachable et reutilisable comme couvercle

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4046408A (en) * 1973-08-03 1977-09-06 Steven Ausnit Omni-directional fastener
US4246288A (en) * 1979-08-09 1981-01-20 W. R. Grace & Co. Reclosable package
US4240241A (en) * 1979-08-09 1980-12-23 W. R. Grace & Co. Method and apparatus for making a reclosable package
US4500011A (en) * 1983-01-07 1985-02-19 Minnesota Mining And Manufacturing Company Tape closure for a can end
US4570820A (en) * 1983-01-18 1986-02-18 Creative Products Resource Associates, Ltd. Resealable dispensing container for folded towels
US4555056A (en) * 1983-10-14 1985-11-26 Daniel Bernhardt Tamperproof food package
US4735335A (en) * 1985-08-06 1988-04-05 Etude Et Realisation De Chaines Automatiques-E.R.C.A. Composite band for lids for thermoplastic containers
US4731911A (en) * 1986-08-08 1988-03-22 Minigrip, Inc. Extruded closure strip carrying reactivatable adhesive layer
US4724977A (en) * 1987-05-05 1988-02-16 Acorn Technology Inc. Tamper-evident, reclosable, plastic lid
US4810541A (en) * 1987-11-27 1989-03-07 Continental Can Company, Inc. Plastic container having a surface to which a lid may be peelably sealed

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1010738A (en) * 1962-05-17 1965-11-24 Flexigrip Ltd Improvements relating to flexible strip fasteners
DE2147951A1 (de) * 1971-06-15 1973-03-29 Reynolds Aluminiumwerke Gmbh Deckel fuer einen einseitig offenen behaelter, insbes. fuer lebensmittelpackungen
FR2546481A1 (fr) * 1983-05-27 1984-11-30 Flexico France Sarl Sachet inviolable, du type en matiere plastique extrudee, a bandes de fermeture a profiles d'accouplement; bandes de fermeture destinees a equiper un tel sachet
FR2618411A1 (fr) * 1987-07-24 1989-01-27 Valoine Sarl Charcuterie Recipient pour emballage de denrees alimentaires, ferme par opercule arrachable et reutilisable comme couvercle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19802016B4 (de) * 1997-05-13 2011-09-29 Abro Weidenhammer Gmbh Behälter mit Verschlußmembran
DE102020107324A1 (de) 2020-03-17 2021-09-23 Mondi Ag Tiefziehfolienverpackung

Also Published As

Publication number Publication date
US4896775A (en) 1990-01-30
AU3703689A (en) 1990-01-04
DE58901385D1 (de) 1992-06-17
EP0348960B1 (fr) 1992-05-13
JPH0257566A (ja) 1990-02-27
AU615311B2 (en) 1991-09-26

Similar Documents

Publication Publication Date Title
EP0348960B1 (fr) Barquetter thermoformées avec opercules arrachables
DE69403759T2 (de) Wiederverschliessbarer Komplementärverschlussstreifen mit Originalitätssicherungselement
DE60109800T2 (de) Füllen und verwenden von wiederverschliessbaren beuteln
DE60208070T2 (de) Wiederverschliessbare standpackung und herstellungsverfahren
DE69936205T2 (de) Leicht zu öffnender beutel
DE69006044T2 (de) Wiederverschliessbare beutelartige Verpackung mit Originalitätssicherung.
DE69207193T2 (de) Selbstexpandierender, wiederverschliessbarer beutel
DE69712509T2 (de) Verfahren zum herstellen einer luftdichten, wiederverschliessbaren verpackung aus flexiblem material
DE60114076T2 (de) Kunststoffbehälter
DE69019701T2 (de) Vorrichtung zur lösbaren Verbindung zweier gegenüberliegender Oberflächenelemente und Verfahren zur Herstellung dieser Vorrichtung.
EP1812303B1 (fr) Sachet d'emballage et procede de production associe
DE60312451T2 (de) Wiederverschliessbare Packung
DE3029596A1 (de) Wiederverschliessbare verpackung
DE20106175U1 (de) Seitenfaltenbeutel oder -sack aus flexiblem schweißbarem Material
EP0190577A2 (fr) Emballage pour liquides avec bec verseur
EP0298302B1 (fr) Emballage sous-vide, en particulier pour café torréfié (moulu)
CH361911A (de) Verfahren zur Herstellung eines dauerhaft verschlossenen Aufreissbehälters
DE69001696T2 (de) Einzelpackung zum verpacken von lebensmitteln sowie verfahren und vorrichtung zu ihrer herstellung.
EP0283940B1 (fr) Feuille pour envelopper des objets
DE10115936A1 (de) Cigarettenpackung
DE602005002514T2 (de) Mehrschichtiger Beutel mit einem Reisverschluss mit Schieber
DE2827803B2 (de) Verpackung für mit einer Kruste überzogene Backwaren und Verfahren zu ihrer Herstellung
DE2840223A1 (de) Verpackung in form eines faltbeutels
DE2837505A1 (de) Behaelter mit aufziehbarer siegelung
EP0039939B1 (fr) Récipient en forme de barquette

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB IT

17P Request for examination filed

Effective date: 19891214

17Q First examination report despatched

Effective date: 19910403

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 19920513

Ref country code: GB

Effective date: 19920513

REF Corresponds to:

Ref document number: 58901385

Country of ref document: DE

Date of ref document: 19920617

EN Fr: translation not filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19921002

GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19940101

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST