US20070290025A1 - Carton assembly having a waterproof lining - Google Patents
Carton assembly having a waterproof lining Download PDFInfo
- Publication number
- US20070290025A1 US20070290025A1 US11/802,850 US80285007A US2007290025A1 US 20070290025 A1 US20070290025 A1 US 20070290025A1 US 80285007 A US80285007 A US 80285007A US 2007290025 A1 US2007290025 A1 US 2007290025A1
- Authority
- US
- United States
- Prior art keywords
- carton
- flaps
- lining
- container
- trailing end
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
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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
- B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
- B65D5/42—Details of containers or of foldable or erectable container blanks
- B65D5/56—Linings or internal coatings, e.g. pre-formed trays provided with a blow- or thermoformed layer
- B65D5/60—Loose, or loosely attached, linings
- B65D5/603—Flexible linings loosely glued to the wall of the container
- B65D5/606—Bags or bag-like tubes loosely glued to the wall of a "tubular" container
-
- 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
- B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
- B65D5/20—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form
- B65D5/24—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form with adjacent sides interconnected by gusset folds
- B65D5/248—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form with adjacent sides interconnected by gusset folds and at least one side being extended and doubled-over to enclose the adjacent gusset flaps
-
- 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
- B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
- B65D5/42—Details of containers or of foldable or erectable container blanks
- B65D5/56—Linings or internal coatings, e.g. pre-formed trays provided with a blow- or thermoformed layer
- B65D5/60—Loose, or loosely attached, linings
- B65D5/603—Flexible linings loosely glued to the wall of the container
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B2105/00—Rigid or semi-rigid containers made by assembling separate sheets, blanks or webs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B2105/00—Rigid or semi-rigid containers made by assembling separate sheets, blanks or webs
- B31B2105/001—Rigid or semi-rigid containers made by assembling separate sheets, blanks or webs made from laminated webs, e.g. including laminating the webs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B2120/00—Construction of rigid or semi-rigid containers
- B31B2120/40—Construction of rigid or semi-rigid containers lined or internally reinforced
- B31B2120/402—Construction of rigid or semi-rigid containers lined or internally reinforced by applying a liner to already made boxes, e.g. opening or distending of the liner or the box
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B2120/00—Construction of rigid or semi-rigid containers
- B31B2120/40—Construction of rigid or semi-rigid containers lined or internally reinforced
- B31B2120/408—Construction of rigid or semi-rigid containers lined or internally reinforced by folding a sheet or blank around an inner tubular liner
Definitions
- the present invention relates to a carton assembly having a waterproof lining. More particularly, the present invention relates to a folded carton, a method of manufacturing a folded carton, and a method for assembling a carton, having a waterproof lining for securing and retaining wet or frozen articles therein.
- Collapsible cartons have been used across various industries for storing and transporting articles.
- planar material such as synthetic, cardstock, paperboard, or “cardboard”
- cardboard has traditionally been cut and perforated to form blanks which are folded into receptacles for retaining various articles.
- These receptacles are generally provided to the customer in any range of assembly, from completely collapsed to fully constructed cartons.
- they are generally provided to the customer as a unitary or two-piece carton, without any accompanying sheets or liners.
- the articles retained in such cartons contain liquid which may contact and permeate the carton.
- these articles include food, such as meat or fish products, whether fresh or frozen
- the saturation of the carton by liquids therein may be undesirable or unsanitary.
- liquids therein e.g., salt water, oils, etc.
- ice when ice is used to preserve food products stored in the carton, it is undesirable for melting ice to saturate and impair the structural integrity of the carton. If an item itself is frozen, it may thaw, partially or completely, thereby releasing liquids inside the carton.
- the articles may include inks or other permanent color markings, it is undesirable for the liquids to seep from within the carton to contact, and possibly stain, objects outside of the carton.
- an economical and accessible carton for storing and/or transporting various articles. It is also desirable to retain the articles so as to prevent associated liquids in the container from either penetrating, and/or leaking from, the carton, as well as to prevent outside contaminants from possibly contacting the contents of the carton. It is also desirable that the carton be configured so that a wet or frozen item can be loaded into and sealed in the carton quickly, without adding down-time to a packing assembly line.
- the present invention is directed to a carton, a method of manufacturing a carton, having a waterproof lining, that substantially overcomes one or more of the problems caused by the limitations and disadvantages of related cartons and methods.
- the methods of the present invention will provide cartons which, when assembled, will have a convenient waterproof lining, a much lower incidence of unusable cartons due to leakage, a quicker loading capability, and consequently, a lower overall cost, to the carton manufacturer, the carton packer/shipper, and the ultimate purchasers of the packaged items.
- a carton assembly comprising: a container portion comprising a base portion, defining a plane, said base portion defined by leading and trailing end edges, and first and second side edges; a leading end flap, foldably attached to, and extending from, the leading end edge; a trailing end flap, foldably attached to, and extending from, the trailing end edge; a first side flap, foldably attached to, and extending from, the first side edge; and a second side flap, foldably attached to, and extending from, the second side edge; wherein said leading and trailing end flaps, and first and second side flaps, fold away from the plane to define a container; and a waterproof lining portion fixed to the container portion, configured to provide an enclosure around an object placed in the container.
- It is a still further object of the present invention to provide an apparatus for manufacturing a carton having a waterproof lining comprising: a means for feeding a carton blank in a first direction, the carton blank comprising: a base portion, defining a plane, said base portion defined by leading and trailing end edges, and first and second side edges; a leading end flap, foldably attached to, and extending from, the leading end edge; a trailing end flap, foldably attached to, and extending from, the trailing end edge; a first side flap, foldably attached to, and extending from, the first side edge; and a second side flap, foldably attached to, and extending from, the second side edge; a means for feeding a synthetic sheet under tension in a second direction; a means for cutting a waterproof lining from the synthetic sheet; a means for folding said leading and trailing end flaps, and first and second side flaps, of the carton blank away from the plane to define a container; and a means for fixing the waterproof lining to the carton blank.
- a carton blank comprising a base portion defining a plane, the base portion defined by leading and trailing end edges, and first and second side edges, the carton blank further including a leading end flap, foldably attached to, and extending from, the leading end edge, a trailing end flap, foldably attached to, and extending from, the trailing end edge, a first side flap, foldably attached to, and extending from, the first side edge, and a second side flap, foldably attached to, and extending from, the second side edge.
- a waterproof liner is fixed to the carton blank.
- leading and trailing end flaps, and first and second side flaps are folded upward, away from the plane to define a container. Definition of the container opens the waterproof liner to receive a wet or frozen object. After the object is placed inside the waterproof liner, the liner is sealed shut and the carton flaps are closed.
- the waterproof liner is a bag. It is further preferable that upon definition of the carton, at least one edge of the waterproof liner overlaps at least one flap of the carton. It is further preferable that the edge of the bag be adhered to the flaps of the container so that, upon definition of the container, the bag is simultaneously opened and held open. It is further preferable that the edge of the bag be adhered to the carton flaps with releasable adhesive.
- FIG. 1 is a side view depicting, schematically, an apparatus for constructing the carton assembly of the present invention
- FIG. 2 a is a side view depicting, schematically, a step of applying an adhesive pattern to a carton blank in accordance with the present invention
- FIG. 2 b is a perspective view depicting a step of feeding and folding a synthetic sheet in accordance with the present invention
- FIG. 3 a is a top view of a portion of the apparatus of FIG. 1 used to reroute the carton blank and affixed waterproof lining;
- FIG. 3 b is a partial side view of the apparatus depicted in FIG. 3 a;
- FIGS. 4 a - 4 x are side views depicting a number of configurations of erected cartons with waterproof linings in accordance with the present invention
- FIGS. 5 a - 5 g are top views depicting unerected cartons having various configurations of adhesive patterns in accordance with the present invention.
- FIG. 6 is a perspective view depicting a waterproof lining which may be received by the carton of FIG. 5 f;
- FIG. 7 is a perspective view of the waterproof lining of FIG. 6 disposed within, and adhered to, the carton of FIG. 5 f ;
- FIG. 8 is a perspective view of the embodiment of FIG. 5 g , with the carton assembled, and ready for loading.
- a method of constructing a carton having a waterproof lining comprises a step of feeding a carton blank in a first direction, the carton blank comprising: a base portion, defining a plane, said base portion defined by leading and trailing end edges, and first and second side edges; a leading end flap, foldably attached to, and extending from, the leading end edge; a trailing end flap, foldably attached to, and extending from, the trailing end edge; a first side flap, foldably attached to, and extending from, the first side edge; and a second side flap, foldably attached to, and extending from, the second side edge; feeding a synthetic sheet under tension in a second direction; cutting a waterproof lining from the synthetic sheet; and affixing the waterproof lining to the carton blank.
- a plurality of carton blanks 22 are provided, each carton blank 22 being fed between a pair of nip rolls 24 of a standard carton blank feeding apparatus, that is well known in the box-processing art.
- the carton blanks 22 may be fed in any orientation. For example, they may be fed with either their longitudinal or transverse axes parallel to the direction of travel. Accordingly, they may be processed, such as with adhesive, in a desired configuration.
- the nip rolls 24 of the carton blank feeding apparatus feed the carton blanks 22 in sequential order onto a conveyor belt 26 , with a set spacing between each carton blank 22 .
- the spacing between the carton blanks can be varied depending on the desired feed rate.
- the feed rate of the blank feeding apparatus can be adjusted by increasing the speed of the nip rolls 24 .
- a vacuum is applied to the conveyor belt 26 to hold the carton blanks 22 firmly against the conveyor belt 26 .
- a vacuum pump 28 is provided with a manifold 30 leading to the bottom of the conveyor belt 26 .
- Conveyor belt 26 is provided with a plurality of perforations in order to allow suction from the vacuum pump 28 to draw each carton blank 22 firmly against the belt.
- an adhesive applying section 50 preferably includes a rotating drum 52 .
- a wedge 54 made of a resilient material such as rubber or hard synthetic, preferably extends lengthwise along the surface of the drum 52 .
- An adhesive supply drum 56 rotates alongside the drum 52 , passing through a reservoir 58 containing a liquid adhesive 60 .
- an adhesive 60 is a non-permanent, release-type adhesive.
- Adhesive supply drum 56 picks up the adhesive 60 from the reservoir 58 and applies it to the apex of wedge 54 .
- rotation of the drum 52 is metered to match the feed rate of the carton blanks 22 on the conveyor belt 26 .
- the rotational speed of the drum 52 can vary as the carton feed rate varies.
- the adhesive applying step when utilized, may be varied.
- use of a wedge 54 with one or more separations along its length may be desired in order to apply a broken-line adhesive pattern 62 on the surface of each carton blank 22 .
- the wedge 54 also can be arranged to define a straight line, a circle, or another pattern, geometric shape, or free forming per customer requirements.
- the relative position of the adhesive pattern 62 on the surface of a respective carton blank 22 also may be varied.
- the use of different adhesives having different strengths, e.g., permanent adhesives and temporary adhesives, is contemplated.
- Additional wedges 54 also may be mounted on the drum 52 to provide additional variations of adhesive patterns 62 . In certain cases, no adhesive may be desired. Hence, in an alternative embodiment, the adhesive applying step may be omitted altogether.
- a step is provided of feeding a synthetic sheet 64 under tension.
- nip rolls 63 preferably rotate and draw the synthetic sheet 64 under tension.
- the direction of travel of the synthetic sheet 64 preferably is in a second direction opposite to the direction in which the carton blanks 22 are fed.
- the synthetic sheet 64 can be fed in the same direction as the carton blanks 22 , at a 90° angle to the carton blanks, or in any other direction relative to the carton blanks 22 .
- the rate of feed of the synthetic sheet 64 can be varied by increasing or decreasing the speed of rotation of the nip rolls 63 .
- the synthetic sheet 64 could comprise a combination of two separate synthetic sheets 66 , 68 , which are fed from synthetic rolls 70 , 72 , respectively, to two nip rolls 74 .
- the synthetic rolls 70 , 72 preferably rotate freely, with the synthetic sheets 66 , 68 being pulled by the rotation of the nip rolls 74 .
- This type of double sheet synthetic may be preferable for increasing the strength and/or waterproof characteristics of the lining.
- the invention is not limited to a double sheet synthetic. A single sheet, or any multiple sheet is within the scope of the invention, simply by adding or deleting synthetic rolls.
- a double synthetic sheet may be advantageous for creating a plurality of synthetic bags, for use as the waterproof lining 110 in the cartons 22 .
- the synthetic sheets may form a tube, which may be cut and sealed in certain locations along its length to create the desired bags.
- a synthetic tube which has been extruded from an annular die, may be formed into bags by preferably cutting and sealing the continuous synthetic tube in certain locations along its length.
- the synthetic sheet 64 and the waterproof lining 110 , or bag, formed therefrom may be made from any type of synthetic material, such as waxed paper, aluminum foil, or any variety of plastics, rubbers, polyethylenes (e.g., PET), polypropylenes, polyvinyls, and the like.
- the synthetic sheet 64 preferably is microwavable and/or ovenable, so as to also provide a convenient cooking receptacle for food products.
- a step may be provided for folding the synthetic sheet 64 .
- the resulting folded synthetic sheet, tube, or bag can have a variety of configurations for providing a waterproof lining consistent with the present invention, as discussed below.
- a folding station 80 includes a horizontal platform 82 , over which the synthetic sheet 64 is draped and pulled.
- the synthetic sheet 64 defines an angle ⁇ 1 with horizontal platform 82 , which preferably is approximately 47°. It has been determined that this angle ⁇ 1 provides optimum tension to the synthetic sheet during the feeding and folding stages to prevent stretching and/or tearing of the synthetic sheet 64 .
- a folding bar 84 is provided to fold the synthetic sheet 64 , thereby creating a base portion 86 and a first side flap 88 .
- FIG. 2 b only depicts one side of the folding station 80 .
- a similar folding bar 84 (not shown in FIG. 2 b ) can be provided on the opposite side, thereby creating a second side flap 90 (not shown in FIG. 2 b ).
- the interaction of the folding bar 84 and the horizontal platform 82 creates a synthetic sheet 64 having at least one fold.
- a cam or “guide plough” 91 can be optionally provided beneath the horizontal surface 82 to crease the side of the first side flap 88 .
- Cam 91 creates a third crease 93 , dividing the first side flap 88 into a pair of subflaps 92 and 94 . It is further possible to fold the other flap 90 into a pair of subflaps joined by a fourth crease (not shown), by providing another cam or “guide plough” on the opposite side of horizontal surface 82 .
- the invention is not limited to any particular arrangement of creases and folds in synthetic sheet 64 . It is not even required that the synthetic sheet have two flaps. In some cases, only a single flap will be required, defining the base portion of the synthetic by a first crease and an opposite edge. In fact, in some cases, it is preferable to retain the synthetic sheet 64 in a flat configuration without any intended creases, folds or flaps. In such an embodiment, the synthetic sheet 64 preferably is fixed to a, yet un-folded, carton blank 22 while in its flat configuration.
- additional creases and flaps may be provided in the synthetic sheet 64 , in order to create any desired configuration to the waterproof lining, by adding additional folding structure to folding station 80 .
- the invention therefore is not limited to the number of folds that can be provided in the synthetic sheet. The number of folds, flaps and subflaps will be a function of customer preference.
- a pair of nip rolls 96 may be provided, as broadly depicted in FIG. 2 b , to firmly press the folded synthetic sheet 64 together for further processing.
- the presently disclosed method preferably also includes the step of cutting the synthetic sheet 64 , as well as an apparatus for performing the cutting step.
- a rotating cutting cylinder 100 is provided, having a plurality of cutting blades 102 projecting therefrom, for cutting the synthetic sheet 64 into sections having leading and trailing end edges, and a second length between the leading and trailing end edges.
- the number of cutting blades 102 is adjustable.
- the cutting cylinder 100 preferably rotates alongside a rotating vacuum drum 104 , such that one of the cutting blades 102 contacts an anvil 106 .
- Synthetic sheet 64 after passing between the nip rolls 63 , threads between the cutting cylinder 100 and vacuum drum 104 .
- Cutting blade 102 then preferably slices a waterproof lining 110 from synthetic sheet 64 .
- each waterproof lining 110 after being cut from the synthetic sheet 64 , is held against the surface of the vacuum drum 104 by the suction of the vacuum pump 28 via the vacuum manifold 112 and a plurality of apertures in the surface of vacuum drum 104 . Each waterproof lining 110 is then pressed between the vacuum drum 104 and its corresponding carton blank 22 . When adhesive has been applied to the carton blanks 22 , each waterproof lining 110 adheres to the adhesive pattern 62 of each carton blank 22 . In some embodiments, each waterproof lining 110 may be adhered to its corresponding carton blank 22 by varying degrees of permanence, depending on the location and type of adhesive used.
- a base portion of the waterproof lining 110 is permanently adhered to the carton blank, whereas first and second side flaps, and leading and trailing end flaps, are releasably attached to respective flaps of the unassembled carton 22 .
- a step may be provided for folding leading and trailing end flaps of each carton blank 22 , and first and second side flaps of the carton blank.
- each carton blank 22 with affixed waterproof lining 110 proceeds on the conveyor belt 26 to a flap folding section 120 .
- the flap folding section 120 includes a series of rollers 122 , as are well known in the art, for lifting and folding the box flaps.
- the flaps of the waterproof lining 110 may be folded upwards with the flaps of the carton blank 22 . If the waterproof lining 110 is in its folded configuration over only the base portion 40 of the carton blank 22 , it may remain folded in the center of the carton blank 22 until expanded by an operator or customer.
- the folded carton blank 22 and waterproof lining 110 may pass into a right angle turn section 124 , where the carton blank 22 and waterproof lining 110 are turned 90° and sent down the conveyor belt 126 for final processing. This step occurs only in a right-angle machine. In other cases, where no right-angle turn is required, the right angle turn section 124 can be eliminated.
- the right angle turn section 124 preferably includes a frame 128 and a plurality of slats 130 bolted to the frame.
- at least one of the slats 130 is tilted at an angle ⁇ 2 , of approximately 15° from the vertical.
- it is preferred that the slats 130 are tilted at an angle ⁇ 3 of approximately 5-10° from the horizontal.
- a heat sealing station 132 may be provided.
- the heat sealing station 132 may include a heating element 134 , which lowers onto the waterproof lining 110 , thereby heating it to create a seal in a preferred location, such as along the opening of a bag-shaped waterproof lining 110 .
- One or more heat sealing stations 132 may be provided in various locations along the manufacturing line of FIG. 1 .
- sealing means may be provided before or after the cutting cylinder 100 .
- FIGS. 4 a - 4 x Various folded or non-folded configurations of the waterproof lining 110 and the carton 22 currently envisioned by the inventors are depicted broadly in FIGS. 4 a - 4 x . Each configuration will be discussed briefly below.
- FIG. 4 a depicts a simple fold comprising a base 86 , first side flap 88 , and second side flap 90 .
- the second (or right) side flap 90 lies has over the first (or left) side flap 88 .
- FIG. 4 b depicts a simple fold which is the reverse of the configuration depicted in FIG. 4 a.
- FIG. 4 c depicts another embodiment comprising a base 86 , side flap 90 , and side flap 88 folded into subflaps 92 and 94 .
- FIG. 4 d depicts a fold which is the reverse of the configuration depicted in FIG. 4 c , with the sideflap 90 folded into side flaps 92 ′ and 94 ′.
- FIG. 4 e depicts a Z-fold, comprising a base 86 .
- Each side flap has been folded into a pair of subflaps 92 , 94 , and 92 ′, 94 ′.
- FIG. 4 f depicts a fold which is the reverse of the configuration depicted in FIG. 4 e.
- FIG. 4 g depicts a configuration in which the folding bar and guide plough have been removed, so that no folds or creases are applied to the waterproof lining 110 .
- the waterproof lining 110 consists only of a base portion 86 .
- FIG. 4 h depicts a configuration created by attaching yet another guide plough to one side of the folding station in order to create a third subflap 95 .
- FIG. 4 i depicts a configuration which is the reverse of the configuration depicted in FIG. 4 h.
- FIG. 4 j depicts an accordion fold, created by removing the folding bar and guide ploughs from one side of the folding station, and attaching one folding bar and two guide ploughs to the other side of the folding station.
- This folding station arrangement creates a waterproof lining having a base section 86 , with no side flaps on one side, and the other side folded into three subflaps 92 , 94 and 95 .
- FIG. 4 k depicts a configuration which is the reverse of the configuration depicted in FIG. 4 j.
- FIG. 4 l depicts a fold created by removing the folding bar and guide ploughs from one side of the folding station, and attaching one folding bar and one guide plough to the other side of the folding station.
- This folding station arrangement creates a waterproof lining having a base 86 , with no side flap on one side, and the other side folded into two subflaps 92 and 94 .
- FIG. 4 m depicts a configuration which is the reverse of the configuration depicted in FIG. 4 l.
- FIG. 4 n depicts a “narrow Z-fold” in which a folding bar and guide plough are provided on each side of the folding station, or that each side flap is folded into subflaps 92 , 94 , and 92 ′, 94 ′.
- FIG. 4 o depicts a “left arrow” configuration including a base 86 , one side flap 88 , and the other side flap folded into subflaps 92 , 94 .
- FIG. 4 p depicts a configuration which is the reverse of the configuration depicted in FIG. 4 o.
- FIG. 4 q depicts a configuration in which at least the first side flap 88 and second side flap 90 are disposed over flaps of the carton 22 .
- FIG. 4 r depicts a configuration in which at least the first side flap 88 and second side flap 90 are disposed over and adhered to flaps of the carton 22 .
- the waterproof lining 110 is arranged to spread automatically upon opening the flaps of the carton 22 , to protect them from contact with liquid.
- FIGS. 4 s - t depict a configuration in which the base portion 86 of the waterproof lining 110 comprises a bag, such as a polyethylene bag, which may be sealed by any suitable sealing means 87 , such as a tie, melted seal, adhesive, “zip-lock”, plurality of folds, clasps, or other sealing mechanisms.
- a bag such as a polyethylene bag
- any suitable sealing means 87 such as a tie, melted seal, adhesive, “zip-lock”, plurality of folds, clasps, or other sealing mechanisms.
- FIG. 4 u depicts a configuration of the carton 22 in which a lid portion 23 is configured to fit over and enclose the carton 22 . Moreover, the waterproof lining 110 is folded over itself to enclose any objects therein.
- FIG. 4 v depicts a configuration of the carton 22 in which a first side flap 88 of the waterproof lining 110 is adhered to an outer surface of a flap of the carton 22 .
- a second side flap 90 of the waterproof lining 110 is adhered to an inner surface of another flap of the carton 22 .
- the waterproof lining 110 is preferably arranged with adhesive on one or more surfaces so as to create a seal upon closing the flaps of the carton 22 .
- FIG. 4 w depicts the carton 22 and waterproof lining 110 of FIG. 4 v in a nearly closed and sealed position.
- adhesive disposed on the waterproof lining 110 itself preferably creates a waterproof, retaining seal.
- FIG. 4 x depicts a configuration of the carton 22 and waterproof lining 110 in which only the second side flap 90 of the waterproof lining 110 is adhered to a flap of the carton 22 .
- the first side flap 88 is preferably free for manipulation by a user but capable of being adhered to a flap of the carton 22 , in any desired configuration, if preferably provided with adhesive.
- FIGS. 5 a - d depict various embodiments of the carton 22 , each having a different adhesive pattern 62 .
- each adhesive pattern 62 may have a different arrangement of lines, strips, or dots of adhesive 60 disposed on the surface of the carton 22 .
- each adhesive pattern 62 may include any preferable arrangement of adhesives on the base portion and/or flaps of the carton.
- various portions of each adhesive pattern 62 may have varying types of adhesive so as to be either permanent or releasable in adhesive strength.
- FIGS. 5 e - f depict an alternative style of carton 22 having still further arrangements of adhesive patterns 62 .
- the bag is preferably affixed to the carton 22 by a single strip of adhesive 62 .
- the single strip of adhesive 62 is preferably a strong adhesive that permanently affixes the bag to the carton 22 .
- the bag is only secured to the carton 22 by a single location at the bottom of the bag.
- the bag may be held open by the opening of the flaps.
- FIG. 5 g depicts an alternative style of a one-piece carton 22 having still further arrangements of adhesive 60 .
- the waterproof lining 110 preferably is a gusseted tube of poly that has been cut-off and closed at its bottom end by a heat seal 111 , and adhered to the carton 22 by a permanent adhesive pattern 62 a .
- the waterproof lining 110 is also preferably secured to at least one set of non-permanent, releasable, adhesive patterns 62 b .
- suitable releasable adhesives preferably include hot melt adhesives, curable adhesives, pressure sensitive adhesives, epoxies, acrylic adhesives, and any other natural or synthetic non-permanent adhesive.
- the releasable adhesive patterns 62 b may be disposed on the inside and/or outside faces of the carton flaps. As illustrated, the waterproof lining 110 is adhered to a set of releasable adhesive patterns 62 b adjacent to an open end 113 of the waterproof lining 110 . Accordingly, the waterproof lining 110 preferably includes a bag held open by flaps of the carton 22 for the convenient loading and unloading of food and other items.
- the bag may be releasably affixed to flaps of the carton 22 with releasable adhesive.
- the flaps of the carton 22 may be prevented from coming in contact with fluids or other contents of the bag of the waterproof lining 110 , such as during loading and unloading of the contents.
- Such a waterproof lining 110 may be particularly useful in retaining and transporting seafood, such as shellfish and other pointed, and potentially abrasive objects. Moreover, such a bag may be especially reinforced for preventing the trespass of associated liquids into and through the carton 22 .
- the open end 113 may be released from the releasable adhesive patterns 62 b to be secured for sealing of the bag by other means, as described above, prior to shipping or storage.
- the bag when a user opens a carton 22 to its upright, assembled position, the bag is simultaneously pulled upward to its upright and open position, ready to receive a product. After insertion of the product into the open bag, the bag can be closed and sealed and the carton can be closed. Hence, the packing of a carton 22 with wet items, such as meat or seafood, can be performed on a packing assembly line, efficiently and without shutting down the line.
- a waterproof lining 110 is illustrated in a position to be received by a carton 22 .
- the waterproof lining 110 is illustrated as adhered to the carton 22 in FIG. 7 .
- the waterproof lining 110 may be capable of encapsulating an item and retaining liquids within the lining, upon enclosure of the object therein.
- the carton 22 is not limited to any particular material or dimensions.
- the product to be shipped includes shellfish, or a similar product with points and sharp edges
- relatively thick or foamed board may be used to prevent shells and claws from piercing the walls of the carton.
- cartons 22 consistent with the present invention preferably may include any other variety of carton, box, or crate, and any configuration of reinforcements.
- suitable cartons 22 may include metal wiring, synthetic brackets, corner protectors, corrugations or other braces. Other materials may be selected for other applications, as desired.
- the process and apparatus described above allows preparation of carton blanks having a prefolded waterproof lining or waterproof bag.
- the carton blank can be unfolded and assembled into a carton having a folded waterproof lining or a waterproof bag, already inserted and ready to be opened quickly.
- the novel method of applying adhesive to the carton blank surface, and of using release-type adhesive results in the waterproof lining being fixed in place, but in some embodiments, being easily removable if the customer does not want a waterproof lining.
- the novel method of folding the synthetic sheet serves to prevent damage to the synthetic sheet during the preparation process. When a right angle machine is used, the novel use of angled slats in the right angle turn section also prevents damage to the waterproof lining during the preparation process.
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Abstract
Description
- The present disclosure claims the right to priority based on U.S. Provisional Patent Application No. 60/808,577 filed on May 26, 2006, which is incorporated herein by reference.
- I. Field of the Invention
- The present invention relates to a carton assembly having a waterproof lining. More particularly, the present invention relates to a folded carton, a method of manufacturing a folded carton, and a method for assembling a carton, having a waterproof lining for securing and retaining wet or frozen articles therein.
- II. Description of the Related Art
- Collapsible cartons have been used across various industries for storing and transporting articles. Specifically, planar material, such as synthetic, cardstock, paperboard, or “cardboard”, has traditionally been cut and perforated to form blanks which are folded into receptacles for retaining various articles. For example, some industries, including manufacturers and retailers, may provide their customers with such receptacles for transporting and/or storing purchased items. These receptacles are generally provided to the customer in any range of assembly, from completely collapsed to fully constructed cartons. Moreover, they are generally provided to the customer as a unitary or two-piece carton, without any accompanying sheets or liners.
- In some cases, the articles retained in such cartons contain liquid which may contact and permeate the carton. In the event that these articles include food, such as meat or fish products, whether fresh or frozen, the saturation of the carton by liquids therein (e.g., salt water, oils, etc.) may be undesirable or unsanitary. For example, when ice is used to preserve food products stored in the carton, it is undesirable for melting ice to saturate and impair the structural integrity of the carton. If an item itself is frozen, it may thaw, partially or completely, thereby releasing liquids inside the carton. In another instance, such as when the articles may include inks or other permanent color markings, it is undesirable for the liquids to seep from within the carton to contact, and possibly stain, objects outside of the carton. Furthermore, in some cases, it is undesirable for outside contaminants to contact those articles retained within the carton.
- Thus, it is desirable to provide an economical and accessible carton for storing and/or transporting various articles. It is also desirable to retain the articles so as to prevent associated liquids in the container from either penetrating, and/or leaking from, the carton, as well as to prevent outside contaminants from possibly contacting the contents of the carton. It is also desirable that the carton be configured so that a wet or frozen item can be loaded into and sealed in the carton quickly, without adding down-time to a packing assembly line.
- Accordingly, the present invention is directed to a carton, a method of manufacturing a carton, having a waterproof lining, that substantially overcomes one or more of the problems caused by the limitations and disadvantages of related cartons and methods. The methods of the present invention will provide cartons which, when assembled, will have a convenient waterproof lining, a much lower incidence of unusable cartons due to leakage, a quicker loading capability, and consequently, a lower overall cost, to the carton manufacturer, the carton packer/shipper, and the ultimate purchasers of the packaged items.
- To achieve these and other advantages, and in accordance with the purposes of the invention, as embodied and broadly described, it is an object of the invention to provide a carton assembly comprising: a container portion comprising a base portion, defining a plane, said base portion defined by leading and trailing end edges, and first and second side edges; a leading end flap, foldably attached to, and extending from, the leading end edge; a trailing end flap, foldably attached to, and extending from, the trailing end edge; a first side flap, foldably attached to, and extending from, the first side edge; and a second side flap, foldably attached to, and extending from, the second side edge; wherein said leading and trailing end flaps, and first and second side flaps, fold away from the plane to define a container; and a waterproof lining portion fixed to the container portion, configured to provide an enclosure around an object placed in the container.
- It is a further object of the invention to provide a method of assembling a carton having a waterproof lining, comprising the steps of: feeding a carton blank in a first direction, the carton blank comprising: a base portion, defining a plane, said base portion defined by leading and trailing end edges, and first and second side edges; a leading end flap, foldably attached to, and extending from, the leading end edge; a trailing end flap, foldably attached to, and extending from, the trailing end edge; a first side flap, foldably attached to, and extending from, the first side edge; and a second side flap, foldably attached to, and extending from, the second side edge; feeding a synthetic sheet under tension in a second direction; cutting a waterproof lining from the synthetic sheet; and affixing the waterproof lining to the carton blank.
- It is a still further object of the present invention to provide an apparatus for manufacturing a carton having a waterproof lining, comprising: a means for feeding a carton blank in a first direction, the carton blank comprising: a base portion, defining a plane, said base portion defined by leading and trailing end edges, and first and second side edges; a leading end flap, foldably attached to, and extending from, the leading end edge; a trailing end flap, foldably attached to, and extending from, the trailing end edge; a first side flap, foldably attached to, and extending from, the first side edge; and a second side flap, foldably attached to, and extending from, the second side edge; a means for feeding a synthetic sheet under tension in a second direction; a means for cutting a waterproof lining from the synthetic sheet; a means for folding said leading and trailing end flaps, and first and second side flaps, of the carton blank away from the plane to define a container; and a means for fixing the waterproof lining to the carton blank.
- It is a further object of the invention to provide a method for manufacturing a carton with a waterproof lining. A carton blank is provided, comprising a base portion defining a plane, the base portion defined by leading and trailing end edges, and first and second side edges, the carton blank further including a leading end flap, foldably attached to, and extending from, the leading end edge, a trailing end flap, foldably attached to, and extending from, the trailing end edge, a first side flap, foldably attached to, and extending from, the first side edge, and a second side flap, foldably attached to, and extending from, the second side edge. A waterproof liner is fixed to the carton blank. The leading and trailing end flaps, and first and second side flaps are folded upward, away from the plane to define a container. Definition of the container opens the waterproof liner to receive a wet or frozen object. After the object is placed inside the waterproof liner, the liner is sealed shut and the carton flaps are closed.
- Preferably, the waterproof liner is a bag. It is further preferable that upon definition of the carton, at least one edge of the waterproof liner overlaps at least one flap of the carton. It is further preferable that the edge of the bag be adhered to the flaps of the container so that, upon definition of the container, the bag is simultaneously opened and held open. It is further preferable that the edge of the bag be adhered to the carton flaps with releasable adhesive.
- Additional objects and advantages of the invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the invention. The advantages of the invention will be realized and attained by the process and apparatus particularly pointed out in the written description and claims, as well as the enclosed drawings.
- It is to be understood that both the foregoing general description and the following detail description are only exemplary, and are intended to provide further explanation of the invention as claimed.
- The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention. In the drawings,
-
FIG. 1 is a side view depicting, schematically, an apparatus for constructing the carton assembly of the present invention; -
FIG. 2 a is a side view depicting, schematically, a step of applying an adhesive pattern to a carton blank in accordance with the present invention; -
FIG. 2 b is a perspective view depicting a step of feeding and folding a synthetic sheet in accordance with the present invention; -
FIG. 3 a is a top view of a portion of the apparatus ofFIG. 1 used to reroute the carton blank and affixed waterproof lining; -
FIG. 3 b is a partial side view of the apparatus depicted inFIG. 3 a; -
FIGS. 4 a-4 x are side views depicting a number of configurations of erected cartons with waterproof linings in accordance with the present invention; -
FIGS. 5 a-5 g are top views depicting unerected cartons having various configurations of adhesive patterns in accordance with the present invention; -
FIG. 6 is a perspective view depicting a waterproof lining which may be received by the carton ofFIG. 5 f; -
FIG. 7 is a perspective view of the waterproof lining ofFIG. 6 disposed within, and adhered to, the carton ofFIG. 5 f; and -
FIG. 8 is a perspective view of the embodiment ofFIG. 5 g, with the carton assembled, and ready for loading. - Reference will now be made in detail to the present embodiment of the invention, an example of which is illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts.
- The exemplary embodiment of an apparatus for manufacturing a carton assembly of the present invention is shown in
FIG. 1 and is designated generally byreference numeral 20. In accordance with the invention, a method of constructing a carton having a waterproof lining comprises a step of feeding a carton blank in a first direction, the carton blank comprising: a base portion, defining a plane, said base portion defined by leading and trailing end edges, and first and second side edges; a leading end flap, foldably attached to, and extending from, the leading end edge; a trailing end flap, foldably attached to, and extending from, the trailing end edge; a first side flap, foldably attached to, and extending from, the first side edge; and a second side flap, foldably attached to, and extending from, the second side edge; feeding a synthetic sheet under tension in a second direction; cutting a waterproof lining from the synthetic sheet; and affixing the waterproof lining to the carton blank. - As broadly embodied herein, and referring to
FIG. 1 , a plurality ofcarton blanks 22 are provided, each carton blank 22 being fed between a pair ofnip rolls 24 of a standard carton blank feeding apparatus, that is well known in the box-processing art. It is contemplated that thecarton blanks 22 may be fed in any orientation. For example, they may be fed with either their longitudinal or transverse axes parallel to the direction of travel. Accordingly, they may be processed, such as with adhesive, in a desired configuration. Thenip rolls 24 of the carton blank feeding apparatus feed thecarton blanks 22 in sequential order onto aconveyor belt 26, with a set spacing between each carton blank 22. The spacing between the carton blanks can be varied depending on the desired feed rate. The feed rate of the blank feeding apparatus can be adjusted by increasing the speed of the nip rolls 24. - Preferably, a vacuum is applied to the
conveyor belt 26 to hold thecarton blanks 22 firmly against theconveyor belt 26. Accordingly, avacuum pump 28 is provided with a manifold 30 leading to the bottom of theconveyor belt 26.Conveyor belt 26 is provided with a plurality of perforations in order to allow suction from thevacuum pump 28 to draw each carton blank 22 firmly against the belt. - Preferably the method may include a step of applying adhesive to a selected position on the surface of each
carton blank 22. As broadly embodied herein, and referring toFIGS. 1 and 2 a, an adhesive applyingsection 50 preferably includes arotating drum 52. Awedge 54, made of a resilient material such as rubber or hard synthetic, preferably extends lengthwise along the surface of thedrum 52. Anadhesive supply drum 56 rotates alongside thedrum 52, passing through areservoir 58 containing aliquid adhesive 60. In some embodiments, an adhesive 60 is a non-permanent, release-type adhesive.Adhesive supply drum 56 picks up the adhesive 60 from thereservoir 58 and applies it to the apex ofwedge 54. - Preferably, rotation of the
drum 52 is metered to match the feed rate of thecarton blanks 22 on theconveyor belt 26. Hence, the rotational speed of thedrum 52 can vary as the carton feed rate varies. As will be understood with reference below toFIGS. 5 a-g, it is within the scope of the invention to apply the adhesive in a plurality of selected locations on the carton surface so as to result in anadhesive pattern 62 disposed in a desired configuration on eachcarton blank 22. - Thus, the adhesive applying step, when utilized, may be varied. For example, use of a
wedge 54 with one or more separations along its length may be desired in order to apply a broken-line adhesive pattern 62 on the surface of eachcarton blank 22. Thewedge 54 also can be arranged to define a straight line, a circle, or another pattern, geometric shape, or free forming per customer requirements. The relative position of theadhesive pattern 62 on the surface of a respective carton blank 22 also may be varied. Furthermore, the use of different adhesives having different strengths, e.g., permanent adhesives and temporary adhesives, is contemplated.Additional wedges 54 also may be mounted on thedrum 52 to provide additional variations ofadhesive patterns 62. In certain cases, no adhesive may be desired. Hence, in an alternative embodiment, the adhesive applying step may be omitted altogether. - In accordance with a method of the invention, a step is provided of feeding a
synthetic sheet 64 under tension. As broadly embodied herein, and referring toFIG. 1 , nip rolls 63 preferably rotate and draw thesynthetic sheet 64 under tension. As shown inFIG. 1 , the direction of travel of thesynthetic sheet 64 preferably is in a second direction opposite to the direction in which thecarton blanks 22 are fed. However, the invention is not limited to this direction of travel. Thesynthetic sheet 64 can be fed in the same direction as thecarton blanks 22, at a 90° angle to the carton blanks, or in any other direction relative to thecarton blanks 22. Moreover, the rate of feed of thesynthetic sheet 64 can be varied by increasing or decreasing the speed of rotation of the nip rolls 63. - As broadly embodied in
FIG. 1 , thesynthetic sheet 64 could comprise a combination of two separatesynthetic sheets synthetic rolls synthetic sheets waterproof lining 110 in thecartons 22. For instance, if sealed along their first and second sides, the synthetic sheets may form a tube, which may be cut and sealed in certain locations along its length to create the desired bags. Alternatively, a synthetic tube, which has been extruded from an annular die, may be formed into bags by preferably cutting and sealing the continuous synthetic tube in certain locations along its length. - The
synthetic sheet 64 and thewaterproof lining 110, or bag, formed therefrom may be made from any type of synthetic material, such as waxed paper, aluminum foil, or any variety of plastics, rubbers, polyethylenes (e.g., PET), polypropylenes, polyvinyls, and the like. In one embodiment, thesynthetic sheet 64 preferably is microwavable and/or ovenable, so as to also provide a convenient cooking receptacle for food products. - In accordance with one embodiment of the present invention, a step may be provided for folding the
synthetic sheet 64. The resulting folded synthetic sheet, tube, or bag can have a variety of configurations for providing a waterproof lining consistent with the present invention, as discussed below. - As broadly embodied herein, and referring to
FIGS. 1 and 2 b, afolding station 80 includes ahorizontal platform 82, over which thesynthetic sheet 64 is draped and pulled. Thesynthetic sheet 64 defines an angle θ1 withhorizontal platform 82, which preferably is approximately 47°. It has been determined that this angle θ1 provides optimum tension to the synthetic sheet during the feeding and folding stages to prevent stretching and/or tearing of thesynthetic sheet 64. - As broadly embodied in
FIG. 2 b, afolding bar 84 is provided to fold thesynthetic sheet 64, thereby creating abase portion 86 and afirst side flap 88.FIG. 2 b only depicts one side of thefolding station 80. If desired, a similar folding bar 84 (not shown inFIG. 2 b) can be provided on the opposite side, thereby creating a second side flap 90 (not shown inFIG. 2 b). The interaction of thefolding bar 84 and thehorizontal platform 82 creates asynthetic sheet 64 having at least one fold. - As broadly embodied in
FIG. 2 b, a cam or “guide plough” 91 can be optionally provided beneath thehorizontal surface 82 to crease the side of thefirst side flap 88.Cam 91 creates a third crease 93, dividing thefirst side flap 88 into a pair ofsubflaps other flap 90 into a pair of subflaps joined by a fourth crease (not shown), by providing another cam or “guide plough” on the opposite side ofhorizontal surface 82. - The invention is not limited to any particular arrangement of creases and folds in
synthetic sheet 64. It is not even required that the synthetic sheet have two flaps. In some cases, only a single flap will be required, defining the base portion of the synthetic by a first crease and an opposite edge. In fact, in some cases, it is preferable to retain thesynthetic sheet 64 in a flat configuration without any intended creases, folds or flaps. In such an embodiment, thesynthetic sheet 64 preferably is fixed to a, yet un-folded, carton blank 22 while in its flat configuration. - Alternatively, additional creases and flaps may be provided in the
synthetic sheet 64, in order to create any desired configuration to the waterproof lining, by adding additional folding structure tofolding station 80. The invention therefore is not limited to the number of folds that can be provided in the synthetic sheet. The number of folds, flaps and subflaps will be a function of customer preference. To complete the folding step, a pair of nip rolls 96 may be provided, as broadly depicted inFIG. 2 b, to firmly press the foldedsynthetic sheet 64 together for further processing. - The presently disclosed method preferably also includes the step of cutting the
synthetic sheet 64, as well as an apparatus for performing the cutting step. As broadly embodied herein, and referring toFIG. 1 , arotating cutting cylinder 100 is provided, having a plurality of cuttingblades 102 projecting therefrom, for cutting thesynthetic sheet 64 into sections having leading and trailing end edges, and a second length between the leading and trailing end edges. Preferably, the number ofcutting blades 102 is adjustable. - As embodied in
FIG. 1 , thecutting cylinder 100 preferably rotates alongside arotating vacuum drum 104, such that one of thecutting blades 102 contacts ananvil 106.Synthetic sheet 64, after passing between the nip rolls 63, threads between the cuttingcylinder 100 andvacuum drum 104. Cuttingblade 102 then preferably slices awaterproof lining 110 fromsynthetic sheet 64. - As broadly embodied in
FIG. 1 , eachwaterproof lining 110, after being cut from thesynthetic sheet 64, is held against the surface of thevacuum drum 104 by the suction of thevacuum pump 28 via thevacuum manifold 112 and a plurality of apertures in the surface ofvacuum drum 104. Eachwaterproof lining 110 is then pressed between thevacuum drum 104 and itscorresponding carton blank 22. When adhesive has been applied to thecarton blanks 22, eachwaterproof lining 110 adheres to theadhesive pattern 62 of eachcarton blank 22. In some embodiments, eachwaterproof lining 110 may be adhered to its corresponding carton blank 22 by varying degrees of permanence, depending on the location and type of adhesive used. For example, in one embodiment, a base portion of thewaterproof lining 110 is permanently adhered to the carton blank, whereas first and second side flaps, and leading and trailing end flaps, are releasably attached to respective flaps of theunassembled carton 22. - In accordance with the invention, a step may be provided for folding leading and trailing end flaps of each carton blank 22, and first and second side flaps of the carton blank. As broadly embodied in
FIG. 1 , each carton blank 22 with affixedwaterproof lining 110 proceeds on theconveyor belt 26 to aflap folding section 120. Theflap folding section 120 includes a series ofrollers 122, as are well known in the art, for lifting and folding the box flaps. In the event that thewaterproof lining 110 has been affixed to and/or over the flaps of the carton blank 22, the flaps of thewaterproof lining 110 may be folded upwards with the flaps of thecarton blank 22. If thewaterproof lining 110 is in its folded configuration over only the base portion 40 of the carton blank 22, it may remain folded in the center of the carton blank 22 until expanded by an operator or customer. - After passing through the
rollers 122, the folded carton blank 22 andwaterproof lining 110 may pass into a rightangle turn section 124, where the carton blank 22 andwaterproof lining 110 are turned 90° and sent down theconveyor belt 126 for final processing. This step occurs only in a right-angle machine. In other cases, where no right-angle turn is required, the rightangle turn section 124 can be eliminated. - When a right angle turn is required, and as shown in
FIGS. 3 a and 3 b, the rightangle turn section 124 preferably includes aframe 128 and a plurality ofslats 130 bolted to the frame. Preferably, at least one of theslats 130 is tilted at an angle θ2, of approximately 15° from the vertical. In addition, it is preferred that theslats 130 are tilted at an angle θ3 of approximately 5-10° from the horizontal. It has been found that these angles of inclination for theslats 130 are ideal for enabling theslats 130 to hold thewaterproof lining 110 down during the right angle turn of the carton, while at the same time avoiding stretching or tearing of eachwaterproof lining 110. - In the event that the
waterproof lining 110 requires heat sealing, aheat sealing station 132 may be provided. Theheat sealing station 132 may include aheating element 134, which lowers onto thewaterproof lining 110, thereby heating it to create a seal in a preferred location, such as along the opening of a bag-shapedwaterproof lining 110. One or moreheat sealing stations 132 may be provided in various locations along the manufacturing line ofFIG. 1 . For example, sealing means may be provided before or after thecutting cylinder 100. - Various folded or non-folded configurations of the
waterproof lining 110 and thecarton 22 currently envisioned by the inventors are depicted broadly inFIGS. 4 a-4 x. Each configuration will be discussed briefly below. -
FIG. 4 a depicts a simple fold comprising abase 86,first side flap 88, andsecond side flap 90. In this configuration, the second (or right)side flap 90 lies has over the first (or left)side flap 88. -
FIG. 4 b depicts a simple fold which is the reverse of the configuration depicted inFIG. 4 a. -
FIG. 4 c depicts another embodiment comprising abase 86,side flap 90, andside flap 88 folded intosubflaps -
FIG. 4 d depicts a fold which is the reverse of the configuration depicted inFIG. 4 c, with thesideflap 90 folded into side flaps 92′ and 94′. -
FIG. 4 e depicts a Z-fold, comprising abase 86. Each side flap has been folded into a pair ofsubflaps -
FIG. 4 f depicts a fold which is the reverse of the configuration depicted inFIG. 4 e. -
FIG. 4 g depicts a configuration in which the folding bar and guide plough have been removed, so that no folds or creases are applied to thewaterproof lining 110. In this configuration, thewaterproof lining 110 consists only of abase portion 86. -
FIG. 4 h depicts a configuration created by attaching yet another guide plough to one side of the folding station in order to create athird subflap 95. -
FIG. 4 i depicts a configuration which is the reverse of the configuration depicted inFIG. 4 h. -
FIG. 4 j depicts an accordion fold, created by removing the folding bar and guide ploughs from one side of the folding station, and attaching one folding bar and two guide ploughs to the other side of the folding station. This folding station arrangement creates a waterproof lining having abase section 86, with no side flaps on one side, and the other side folded into threesubflaps -
FIG. 4 k depicts a configuration which is the reverse of the configuration depicted inFIG. 4 j. -
FIG. 4 l depicts a fold created by removing the folding bar and guide ploughs from one side of the folding station, and attaching one folding bar and one guide plough to the other side of the folding station. This folding station arrangement creates a waterproof lining having a base 86, with no side flap on one side, and the other side folded into twosubflaps -
FIG. 4 m depicts a configuration which is the reverse of the configuration depicted inFIG. 4 l. -
FIG. 4 n depicts a “narrow Z-fold” in which a folding bar and guide plough are provided on each side of the folding station, or that each side flap is folded intosubflaps -
FIG. 4 o depicts a “left arrow” configuration including abase 86, oneside flap 88, and the other side flap folded intosubflaps -
FIG. 4 p depicts a configuration which is the reverse of the configuration depicted inFIG. 4 o. -
FIG. 4 q depicts a configuration in which at least thefirst side flap 88 andsecond side flap 90 are disposed over flaps of thecarton 22. -
FIG. 4 r depicts a configuration in which at least thefirst side flap 88 andsecond side flap 90 are disposed over and adhered to flaps of thecarton 22. In this embodiment, thewaterproof lining 110 is arranged to spread automatically upon opening the flaps of thecarton 22, to protect them from contact with liquid. -
FIGS. 4 s-t depict a configuration in which thebase portion 86 of thewaterproof lining 110 comprises a bag, such as a polyethylene bag, which may be sealed by any suitable sealing means 87, such as a tie, melted seal, adhesive, “zip-lock”, plurality of folds, clasps, or other sealing mechanisms. -
FIG. 4 u depicts a configuration of thecarton 22 in which alid portion 23 is configured to fit over and enclose thecarton 22. Moreover, thewaterproof lining 110 is folded over itself to enclose any objects therein. -
FIG. 4 v depicts a configuration of thecarton 22 in which afirst side flap 88 of thewaterproof lining 110 is adhered to an outer surface of a flap of thecarton 22. Asecond side flap 90 of thewaterproof lining 110 is adhered to an inner surface of another flap of thecarton 22. In this embodiment, thewaterproof lining 110 is preferably arranged with adhesive on one or more surfaces so as to create a seal upon closing the flaps of thecarton 22. -
FIG. 4 w depicts thecarton 22 andwaterproof lining 110 ofFIG. 4 v in a nearly closed and sealed position. In this embodiment, adhesive disposed on thewaterproof lining 110 itself, preferably creates a waterproof, retaining seal. -
FIG. 4 x depicts a configuration of thecarton 22 andwaterproof lining 110 in which only thesecond side flap 90 of thewaterproof lining 110 is adhered to a flap of thecarton 22. Thefirst side flap 88 is preferably free for manipulation by a user but capable of being adhered to a flap of thecarton 22, in any desired configuration, if preferably provided with adhesive. -
FIGS. 5 a-d depict various embodiments of thecarton 22, each having a differentadhesive pattern 62. For example, eachadhesive pattern 62 may have a different arrangement of lines, strips, or dots of adhesive 60 disposed on the surface of thecarton 22. Specifically, eachadhesive pattern 62 may include any preferable arrangement of adhesives on the base portion and/or flaps of the carton. Moreover, various portions of eachadhesive pattern 62 may have varying types of adhesive so as to be either permanent or releasable in adhesive strength. -
FIGS. 5 e-f depict an alternative style ofcarton 22 having still further arrangements ofadhesive patterns 62. In the embodiment ofFIG. 5 e, the bag is preferably affixed to thecarton 22 by a single strip ofadhesive 62. The single strip of adhesive 62 is preferably a strong adhesive that permanently affixes the bag to thecarton 22. By this embodiment, the bag is only secured to thecarton 22 by a single location at the bottom of the bag. Alternatively, in those instances in which the bag is affixed to thecarton 22 by a number of adhesive locations, including those on the flaps of thecarton 22, as depicted inFIG. 5 f, the bag may be held open by the opening of the flaps. -
FIG. 5 g depicts an alternative style of a one-piece carton 22 having still further arrangements ofadhesive 60. In this embodiment, thewaterproof lining 110 preferably is a gusseted tube of poly that has been cut-off and closed at its bottom end by aheat seal 111, and adhered to thecarton 22 by apermanent adhesive pattern 62 a. Thewaterproof lining 110 is also preferably secured to at least one set of non-permanent, releasable,adhesive patterns 62 b. For example, suitable releasable adhesives preferably include hot melt adhesives, curable adhesives, pressure sensitive adhesives, epoxies, acrylic adhesives, and any other natural or synthetic non-permanent adhesive. - The releasable
adhesive patterns 62 b may be disposed on the inside and/or outside faces of the carton flaps. As illustrated, thewaterproof lining 110 is adhered to a set of releasableadhesive patterns 62 b adjacent to anopen end 113 of thewaterproof lining 110. Accordingly, thewaterproof lining 110 preferably includes a bag held open by flaps of thecarton 22 for the convenient loading and unloading of food and other items. For example, the bag may be releasably affixed to flaps of thecarton 22 with releasable adhesive. Moreover, the flaps of thecarton 22 may be prevented from coming in contact with fluids or other contents of the bag of thewaterproof lining 110, such as during loading and unloading of the contents. Such awaterproof lining 110, as embodied in a bag, may be particularly useful in retaining and transporting seafood, such as shellfish and other pointed, and potentially abrasive objects. Moreover, such a bag may be especially reinforced for preventing the trespass of associated liquids into and through thecarton 22. In one embodiment, after loading, theopen end 113 may be released from the releasableadhesive patterns 62 b to be secured for sealing of the bag by other means, as described above, prior to shipping or storage. - Referring to
FIG. 8 , when a user opens acarton 22 to its upright, assembled position, the bag is simultaneously pulled upward to its upright and open position, ready to receive a product. After insertion of the product into the open bag, the bag can be closed and sealed and the carton can be closed. Hence, the packing of acarton 22 with wet items, such as meat or seafood, can be performed on a packing assembly line, efficiently and without shutting down the line. - As broadly depicted in
FIG. 6 , awaterproof lining 110 is illustrated in a position to be received by acarton 22. Thewaterproof lining 110 is illustrated as adhered to thecarton 22 inFIG. 7 . Thewaterproof lining 110 may be capable of encapsulating an item and retaining liquids within the lining, upon enclosure of the object therein. - In each of the embodiments disclosed and depicted herein, the
carton 22 is not limited to any particular material or dimensions. For example, in the event that the product to be shipped includes shellfish, or a similar product with points and sharp edges, relatively thick or foamed board may be used to prevent shells and claws from piercing the walls of the carton. It is further contemplated thatcartons 22 consistent with the present invention preferably may include any other variety of carton, box, or crate, and any configuration of reinforcements. For example,suitable cartons 22 may include metal wiring, synthetic brackets, corner protectors, corrugations or other braces. Other materials may be selected for other applications, as desired. - The process and apparatus described above allows preparation of carton blanks having a prefolded waterproof lining or waterproof bag. The carton blank can be unfolded and assembled into a carton having a folded waterproof lining or a waterproof bag, already inserted and ready to be opened quickly. The novel method of applying adhesive to the carton blank surface, and of using release-type adhesive, results in the waterproof lining being fixed in place, but in some embodiments, being easily removable if the customer does not want a waterproof lining. The novel method of folding the synthetic sheet serves to prevent damage to the synthetic sheet during the preparation process. When a right angle machine is used, the novel use of angled slats in the right angle turn section also prevents damage to the waterproof lining during the preparation process.
- The above-described apparatus and process consequently produce superior carton blanks with pre-adhered waterproof linings or bags, with far less waste, and consequently a lower cost.
- The foregoing description of preferred embodiments of the invention has been presented for purposes of illustration and description. It is not intended to be exhaustive or to limit the invention to the precise form disclosed, and modifications and variations are possible in light of the above teachings, or may be acquired from practice of the invention. The embodiments were chosen and described in order to explain the principles and the practical application of the invention, to enable one skilled in the art to utilize the invention in various embodiments and with various modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims attached hereto, and their equivalents. Having thus described the invention with particular reference to the preferred forms thereof, it will be obvious that various changes and modifications can be made therein without departing from the spirit and scope of the present invention as defined by the appended claims.
Claims (39)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/802,850 US20070290025A1 (en) | 2006-05-26 | 2007-05-25 | Carton assembly having a waterproof lining |
US12/950,284 US20110065557A1 (en) | 2006-05-26 | 2010-11-19 | Carton assembly having a waterproof lining |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US80857706P | 2006-05-26 | 2006-05-26 | |
US11/802,850 US20070290025A1 (en) | 2006-05-26 | 2007-05-25 | Carton assembly having a waterproof lining |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/950,284 Division US20110065557A1 (en) | 2006-05-26 | 2010-11-19 | Carton assembly having a waterproof lining |
Publications (1)
Publication Number | Publication Date |
---|---|
US20070290025A1 true US20070290025A1 (en) | 2007-12-20 |
Family
ID=38596278
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/802,850 Abandoned US20070290025A1 (en) | 2006-05-26 | 2007-05-25 | Carton assembly having a waterproof lining |
US12/950,284 Abandoned US20110065557A1 (en) | 2006-05-26 | 2010-11-19 | Carton assembly having a waterproof lining |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/950,284 Abandoned US20110065557A1 (en) | 2006-05-26 | 2010-11-19 | Carton assembly having a waterproof lining |
Country Status (3)
Country | Link |
---|---|
US (2) | US20070290025A1 (en) |
CA (1) | CA2652369A1 (en) |
WO (1) | WO2007139978A2 (en) |
Cited By (2)
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US20080142407A1 (en) * | 2004-09-27 | 2008-06-19 | Alistair Fraser Moore | Apparatus for and Method of Forming Containers and Container Blank Having Content Retaining Web Attached Thereto |
US10987889B2 (en) | 2015-09-21 | 2021-04-27 | Westrock Shared Services, Llc | Methods and machine for forming a shipping container with an article retaining web |
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JP4758373B2 (en) | 2007-03-01 | 2011-08-24 | トヨタ自動車株式会社 | Packaging method and packaging container |
GB0815196D0 (en) * | 2008-08-20 | 2008-09-24 | Concept Packaging Services Ltd | Improvments in and relating to sheet covered boxes |
US8596520B2 (en) | 2012-04-16 | 2013-12-03 | International Paper Co. | Waterproof and anti-wicking corrugated container |
ES2450316B1 (en) * | 2012-09-20 | 2015-07-30 | Laystil, S.A. | Procedure for waterproofing containers |
GB2544743B (en) * | 2015-11-24 | 2019-06-26 | Tri Pack Plastics Ltd | Stackable box |
SE2330483A1 (en) * | 2023-10-31 | 2025-05-01 | Stora Enso Oyj | Blank and a package |
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US20080142407A1 (en) * | 2004-09-27 | 2008-06-19 | Alistair Fraser Moore | Apparatus for and Method of Forming Containers and Container Blank Having Content Retaining Web Attached Thereto |
US10987889B2 (en) | 2015-09-21 | 2021-04-27 | Westrock Shared Services, Llc | Methods and machine for forming a shipping container with an article retaining web |
US11001026B2 (en) | 2015-09-21 | 2021-05-11 | Westrock Shared Services, Llc | Methods and machine for forming a shipping container with an article retaining web |
US11607858B2 (en) | 2015-09-21 | 2023-03-21 | Westrock Shared Services, Llc | Methods and machine for forming a shipping container with an article retaining web |
Also Published As
Publication number | Publication date |
---|---|
WO2007139978A2 (en) | 2007-12-06 |
WO2007139978A3 (en) | 2008-04-03 |
US20110065557A1 (en) | 2011-03-17 |
CA2652369A1 (en) | 2007-12-06 |
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