US2445034A - Sealed slide container - Google Patents

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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
  • B65D5/38—Drawer-and-shell type containers
• • 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
  • B65D77/02—Wrapped articles enclosed in rigid or semi-rigid containers
• • 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
  • B65D77/32—Tearing-strings or like flexible elements

Definitions

• My invention pertains to containers and particularly to a protective container for foods and other products.
• a principal object of my invention is to provide a container fabricated of fibrous and viscous materials capable of keeping foods in prime condition until they reach the consumer, and affording a reasonable protection during the period of consumption.
• a further object is the application of a new principal to the fabrication of a food container whereby a wide variety of fibrous board, lacquers. or other board-coating materials and wrappers, such as waxed glassines, coated papers, Celloph'ane, Pliofilm and other protective materials, may be employed in combinations.
• Another object is to provide in a container is novel three or four sided tray wherein its respective ends are self-locking, both when forming the container, and also when reclosing it by the consumer.
• Another object is to provide a novel food container that can be fabricated by machinery and equipment now existingin operating plants, yet will be cheap and easy to produce and pack, and will stimulate consumer use.
• Another object is to provide a package that is adapted for automatic filling, wrapping and closing, whether the merchandise be dump filled into the trays or stacked in tiers or rows.
• Another object is to provide a container adapted to be filled through one side, which filling side may be wholly or partly open, the container after filling being sealed in a transparent wrapper and the whole may or may not be secured within an open-ended sleeve, an end of the container being self-locking when initially formed and upon reclosing.
• Fig. 1 shows one form of blank from which the self -locking tray may be formed.
• Fig. 2 shows one end of the tray formed from the blank of Fig. l.
• Fig. 3 is a section on line 3-3 of Fig. 2 showing the self-locking flap and tongue.
• Fig. 4 shows a fragment of a tray blank similar to Fig. 1, but with a modified form of lock.
• Fig. 5 shows one end of a tray made from a blank of Fig. 4.
• Fig. 6 illustrates the opening and closing of the end of a tray of Fig. 5.
• Fig. 7 shows a tray, made from a blank of Fig.
• Fig. 8 shows a blank from which the sleeve may be formed.
• Fig. 9 shows a sleeve and filled tray in process of assembly.
• Fig. 10 shows the sleeve and tray fully assembled, ready for shipment.
• Fig. 11 shows a modified'form of sleeve and tray with one end of the tray partly opened or partly reclosed.
• Fig. 12 shows the tray fully opened.
• Fig. 13 shows a blank for forming a tray with an integral fourth side or closure.
• Fig. 14 shows a completely wrapped package as made from a tray of Fig. 13.
• Fig. 15 shows the package of Fig. 14 with the wrapper removed from one end and the tray end opened by the consumer.
• the blank of Fig. 1. may be made from any suitable card board and when used for packaging bakery products, the, surface that is to form the inside of the tray may, be coated with a suitable moisture vapor and grease resistant coating as in my -co-pending application Ser. No. 508,706. Such an impervious coating is indicated by the diagonal shade lines on Fig. 1.
• the blank is cut and scored to provide a panel l0 that forms the bottom of the tray.
• a side panel ll, l2 and at each end an end anel l3, l4 for forming the sides and ends of the tray.
• each side panel has a flap 15, I6, l1, l8, each of which has a locking slit I9, 20, 2
• Each end panel has a lip 23, 24 and on each side has a tongue. 25, 26, 21, 28, that is adapted to enter into one of the slits I9, 20, 2 l, 22.
• the several adjoining panels and flaps are separated by score lines 29, 30, 3l,,32, 33, 34 along which the material is folded to form the tray.
• the slits l9 to 22 are angular or have lateral extensions at each end so that a short resilient latch l9a, 20a, 2la, 22a is formed lrom the material at.
• each locking tongue, short cuts 250., 26a, 21a, 28a extend into the end panels a distance equal to or slightly greater than the thickness of the material, and the score. lines 35, 36, 31, 38 are made wide enough to include the depth of these cuts, so that when the tongues are folded to stand at right angles to the end panels, their outer surfaces will lie substantially flush with or slightly within the adjacent edges of the end panels.
• , 22 substantially coincide with the score lines along which the flaps are joined to the side panels or may be spaced therefrom a distance not greater than the depth or the cuts 25a, 26a, 21a, 26a.
• 2 are turned up at right angles to the bottom "I.
• the flaps l5, l6, ll, l8 are then turned in so that they are perpendicular to the sides and over the score lines 30, 3
• each end may be covered with a. seal 4
• the wrapper 40 may be provided with a tear line 42, having a free end 43, by means of which the wrapper can be torn to give access to the end of the tray beneath the seal 4
• This tear line may extend around the tray or along only three sides.
• FIG. 8 A blank for forming a sleeve to receive the wrapped tray of Fig. 7 is shown in Fig. 8.
• This blank has a back or bottom panel 44, side panels 45, 46, a front panel 41 and a glue strip 46 separated by score lines 49, 50, 5
• Score or embossed lines 53, 54 may be provided for ornamentation and to stifien the sleeve.
• a window 55 is provided in the front panel, which may be of the configuration shown with curved lips 56, 51, 59, 59, at the bases of which are embossed lines 60, 6
• the blank is folded on the score lines 49, 50, 5
• the sleeve is made from cardboard or other relatively stiff material and preferably is shorter than the tray so that the latter projects at one end by an amount approximately equal to the width of the tear strip so as to give easy access to the loose end of the strip.
• the wrapped tray has a sliding fit within the sleeve so that the end of the sleeve may provide a straight edge against which the tear strip may sever the wrapper,
• Fig. 10 shows the completed package ready for shipment and sale to the consumer.
• the tray is longer than the sleeve by an amount equal to the width of the tear line 42.
• the tear line lies outside the sleeve so that the end 43 is exposed.
• the opposite ends of tray and sleeve are flush.
• the tear line 42 has been removed, the end of the tray projects slightly beyond the sleeve which gives easy access to the edge of the end or lid H to open it.
• the tear line 42 will be from 1; to A; inch wide and the tray will project at one end by this amount.
• the bond 64 between the wrapper and sleeve is not broken and the only part of the wrapper that is opened is the part over the end of the tray. Therefore, when reclosed, the package again is sealed substantially tight and will keep the contents against deterloration for a considerable period. This is particularly true when the inside of the tray is coated with a moisture and grease resistant coating.
• the display opening or window will be extended across the front panel 41 of the sleeve and part way across the side panels 45, 46, as indicated by the dot-dash line 66 in Fi 8.
• the sides II and I2 0f the tray will be cut out as indicated by the dot-dash lines 61, 66, Fig. 1, so that the edges of these cut-outs will coincide with the edges of cut-out 66 in the finished package, as shown in Fig, 11. This affords a very attractive and effectual display of two sides and the front of the contents.
• the packages of Figs. 10, 11, and 12 are identical except for the size and shape of the windows i Figs, 10 and 11 and the omission of the window in Fi 12.
• the arrow 69 indicates the run of the grain or fibre of the material as I prefer it so that the material will fold more accurately along the score lines 49, 56, 5
• Figs. 4, 5, and 6, I have illustrated another form Of self-locking end closure that may be used on the tray of either Fig. 1 or 13.
• the same reference numbers, with prime indices, are used to identify the parts corresponding to those in Fig. 1.
• Fig. 4 shows one of four identical corners of the blank.
• the flap l6 has a locking slit 26' that is cut out at 10 so as to provide a two part resilient latch 20*.
• the tongue 26' is joined to the end panel i4 along a broad score line 36' and is cut away at both sides of its base to form a neck H to be received within the cut-out or notch 76.
• the outer edge 26 of the tongue 26' is the arc of a circle with its center at the common corner of the panels III, II and I4 and of a radius substantially equal to the distance from the center to top edge of the slit 26.
• the sides and ends are turned up the same as for the blank of Fig. 1.
• the tongue 26' is turned up on score line 36' and its curved free end entered els.
• the lid I4 need not be fully opened, but may be opened only to the extent shown in Fig. 6 where the end of the tongue 26' remains within the slit 20.
• the tray made according to Figs. 4, 5, and 6 is adapted to be filled, wrapped, sealed and inserted within a sleeve thevsame as the tray of Figs. 1 to 3.
• Fig. 13 I illustrate a blank adapted to form a four-sided tray that will be filled through a display opening in the fourth side and may be opened and reclosed the same as the trays of Figs. 1 to '7.
• This blank is cut and scored to provide a bottom panel 14, side panels I5, 16 and end panels 11, I8 for forming the bottom, sides and ends of the tray, the same as the panels I8, II, I2, I3 and I4 of Fig. 1.
• Each end panel has a tuck or lip I9, 80 corresponding to the lips .23, 24.
• Each side of each end panel has a tongue 25', 26221, 28' cooperating with the respective flaps like the tongue 26' of Fig. 4.
• One set of the tongues and flaps are indicated on Fig.
• a top panel or fourth side 8! is joined to the top edge of side I6 along a score line 82 and at its other edge has a glue strip 83 that is adapted to be secured to the edge of side 15 to form a four-sided tray.
• the top side 8i has an opening 84 which serves both as a filling opening and as a window for displaying the merchandise in the filled container.
• the opening 84 may have inwardly curved lips 85, 86, 81, 88 with embossed lines 89, 98', 9
• the material of this blank preferably is coated with a moisture vapor and grease resistant coating, the same as the blanks of Figs. 1 and 4.
• the blank is first folded on two alternate score lines, 82, 94, and the glue flap 83 is secured to the free edge of side panel 15.
• This leaves the or form of tray is especially adapted for filling with small crackers or biscuit and other materials which usually are dump-filled or poured into a package or carton.
• the glue flap 8! may be secured either to the inside or outside face of panel 15. When it is secured inside, all four sides of the tray present uninterrupted smooth surfaces to the wrapper.
• a wrapper 98, Fig. 14 which preferably is made from a transparent moisture vapor and grease resistant material such as Pliofllm, Cellophane, glassine coated with Parlon, resins or wax, and the like, the longitudinal and end seams being sealed in any suitable manner, as by heat.
• the wrapper may have a tear line 99, with a loose end I88, secured near one end for easy opening, similar to the tear line 42 of Figs. '7 and 10. Or the consumer may sever the wrapper at the end to be opened by a knife or other instrument.
• the sealed wrapper is ably supported by stiff board so that it is easily severed.
• the wrapper 98 may be secured to the tray by stripes of adhesive IOI, I02 so that the wrapper may not be removed in its entirety when it has been severed by the tear line.' These stripes of adhesive may be applied to the tray blank as shown in Fig. 13, in which case an adhesive is used that may be activated by heat and pressure. Or the adhesive may be applied to the tray after fillin and just before it is enclosed in the wrapper.
• Fig. 14 shows the filled and wrapped tray ready for delivery to the consumer.
• the open face of the tray which served as a filling opening, also serves as a window for effectually displaying the merchandise through the transparent wrapper.
• the sealed ends of the wrapper may be covered with a seal asin Figs. 7 and 8.
• the consumer will grasp the end I08 of the tear line and pull it to sever the wrapper near the top as shown at I03, Fig. 15.
• the adhesive I'III holds the wrapper in place around the tray and the adhesive I02 retains the severed top portion on the cover I8.
• the cover I8 can now be opened to give access to the contents.
• the cover need be opened only far enough to enable the consumer to reach or pour out the articles and usually will be opened only to such extent that the tips of the tongues 26, 21 remain within their respective slits. This enables the consumer to reclose and automatical ly relock the package simply by pressure on the end panel I8. It is not necessary to guide the tongues into their slits again, as would be the case if the cover were opened to its maximum.
• Figs. 10 and 14,1 have shown tear strips 42, 99 as a convenient means for opening the container.
• the invention is not limited thereto.
• the wrapper With a wrapped tray as in Fig. 14, the wrapper is supported at all edges of the tray. These edges afiord a convenient means for severing the wrapper on three sides where the end I3,
• tray collapsed or fiat It is then erected into rectangular form by bending on the score lines 94, 96, 82, 91 until the two sides 15, I6, stand parallel and perpendicular to the top and bottom pan-
• the two ends are then closed as described in connection with Figs. 4 to 6 or like Fig. 1, if that form of end closure be used.
• This provides a four-sided tray having a large opening 84' in its top side through which it is filled.
• This type I4 or I1, 19 is to be opened, or the edges may serve as a guide for a suitable instrument, as a knife blade.
• the tear line when the tear line is omitted the top edges of the sleeve form a shoulder or guide for a knife or other instrument for severing the tray wrapper at the end where the tray projects beyond the sleeve and is to be opened.
• My improved container in all forms and modiflcations shown can utilize a wide variety of materials in various combinations adapted to the particular commodity to be packed without departing from a standard method of fabrication.
• material such as cracker shell board
• My improved container in all forms and modiflcations shown can utilize a wide variety of materials in various combinations adapted to the particular commodity to be packed without departing from a standard method of fabrication.
• material such as cracker shell board
• such material being made largely from waste paper and scrap and containing a fairly high percentage of moisture ifnparts contaminating odors to many products, especially bakery goods.
• such material is brittle, has a very low tensile strength, and tends to crack or fracture along the fold lines.
• such materials are entirely satisfactory for packaging foodstuffs that have the most delicate aromas and flavors.
• the coating When the coating is applied to the board,heat is applied to dry the coating and evaporate the solvent which also drives the moisture out of the board. The package is then filled and sealed within an impervious wrapper before it can reabsorb any appreciable amount of moisture. Also, the coating being on the inside of the trays when folded does not crack at the fold lines, but the impervious surface is retained intact over the entire inner surface. All joints or seams of the outer wrappers are heat-sealed against smooth plane surfaces on the sides and ends of the trays so that hermetically tight joints are obtained throughout.
• the tray may be made in other forms.
• , 22 may be omitted, in which case the ends or lids l3, M, will be secured to the flaps l5, l6, l1, l8, as by spot glueing, so that the bond may be easily broken by the consumer after the end of the wrapper has been removed.
• the locking tongues and flaps are not limited to use with an open sided tray, but are adapted for closing an end, top or lid of the usual type of carton.
• the term tray therefore, will be considered to include a carton and not be limited to a tray adapted to be filled through one side except as the context may require.
• a package of the class described comprising a tray having a bottom, two sides and open top, an inturned flap at one end of each side, each flap having a cut therein to provide a latch, an end panel connected to the end of the bottom adjacent said flaps and forming an end of the tray, said end panel lying outside said flaps, a. tongue extending from each side of the end panel, said tongues extending through the respective flap cuts and being gripped by said latches, said latches permitting the tongues to'be withdrawn for opening the end of the tray and to be re-inserted to reclose the end, a sealed wrapper enclosing the tray, a tear line associated with the wrapper adjacent the said end panel of the tray for severing the wrapper, a. sleeve within which the wrapped tray has a sliding fit, said tray being longer than the sleeve whereby the tear line will be outside the sleeve, and means for securing the wrapped tray within the sleeve.
• a package of the class described comprising a tray having a bottom, two sides and open top. an inturned flap at one end of each side, each flap having a cut therein providing a latch, an end panel secured to one end of the bottom adjacent said flaps and forming an end of the tray, said end panel lying outside of said fiaps and having a tongue secured to eachv side along an onset score, said tongues extending through the respective flap cuts and the'ofiset scores providing grooves for receiving the latches, said latches being resilient and permitting the withdrawal of said tongues and their re-insertion to open and reclose the end of the tray, a sealed wrapper enclosing the tray, a tear line for severing the wrapper adjacent the said end of the tray, a sleeve within which the wrapped tray is enclosed, said tray extending beyond the sleeve at one end to expose said tear line, and means for securing the wrapped tray within the sleeve.
• a package of theiclass described comprising an open sided tray having one end adapted for opening and reclosing, a transparent wrapper enclosing the tray and sealed against one side and the ends thereof, a tear line for severing the wrapper adjacent said reclosable end, a sleeve within which the wrapped tray has a sliding fit, a window opening in the side of said sleeve over the open side of the tray whereby the contents of the tray are visible, said tray being longer than the sleeve whereby the tear line will be outside 'the sleeve, and means securing the wrapped tray within the sleeve.
• a package of the class described comprising an open sided tray having one end adapted for opening and reclosing, a transparent wrapper enclosing the tray and sealed against one side and the ends thereof, a tear line for severing the wrapper adjacent said reclosable end, a. sleeve within which the wrapped tray has a sliding fit,
• a package of the class described comprising I a tray having a bottom and two side panels and a top open for filling, said tray having a closure at each end, one of said closures being adapted for opening and reclosing, said reclosable end closure comprising an inturned flap on each side of the tray, an end panel connected to the bottom of the tray and overlying said inturned flaps, each flap having a slit therein providing a lock adjacent its adjoining side, the end panel having a tongue on each side adapted to enter the respective slits, each tongue being engageable by a lock to hold the end panel closed against said inturned flaps, a wrapper enclosing said tray and sealed against one of said first mentioned panels and said two end closures, a tear line for severing said wrapper adjacent said reclosable end, a cardboard member surrounding said wrapper and having a straight edge spaced inwardly from the end of the tray adjacent the tear line, said member being secured to the wrapper.
• a package of the class described comprising a tray having a bottom, two side panels, two end panels and an open top, oneend -panel being connected m the bottom and adapted said tray and sealed against the bottom and two and panels, a tear line associated with the wrapper adjacent said reciosable end panel for severing the wrapper, a sleeve of relatively stii! material within which the wrapped tray has a sliding fit, said sleeve being shorter than the tray with the reelosable end extending beyond one end 0! the sleeve and the other end beinl flush with the other end 0! the sleeve, the first mentioned end of the sleeve being located at the tear line whereby said end will provide an edze against which to sever the wrapper.

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• Mechanical Engineering (AREA)
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Description

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Publications (1)

Family

ID=24052345

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Cited By (10)

Citations (12)

• 1943
  • 1943-12-27 US US515689A patent/US2445034A/en not_active Expired - Lifetime

Patent Citations (12)

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