US3185371A - Molded pulp article - Google Patents

Molded pulp article Download PDF

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Publication number
US3185371A
US3185371A US283061A US28306163A US3185371A US 3185371 A US3185371 A US 3185371A US 283061 A US283061 A US 283061A US 28306163 A US28306163 A US 28306163A US 3185371 A US3185371 A US 3185371A
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United States
Prior art keywords
tray
trays
corners
wall
bottom wall
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.)
Expired - Lifetime
Application number
US283061A
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English (en)
Inventor
Richard F Reifers
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Diamond International Corp
Original Assignee
Diamond International Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Diamond International Corp filed Critical Diamond International Corp
Priority to US283061A priority Critical patent/US3185371A/en
Priority to GB46459/63A priority patent/GB1042728A/en
Priority to DK566963AA priority patent/DK104221C/da
Priority to ES0294513A priority patent/ES294513A1/es
Priority to BE641398D priority patent/BE641398A/xx
Priority to LU45062D priority patent/LU45062A1/xx
Priority to NL6400585A priority patent/NL6400585A/xx
Priority to CH354464A priority patent/CH451805A/fr
Priority to SE5185/64A priority patent/SE303250B/xx
Priority to FI641072A priority patent/FI43283C/fi
Priority to NO153355A priority patent/NO115872B/no
Application granted granted Critical
Publication of US3185371A publication Critical patent/US3185371A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B65D1/00—Rigid or semi-rigid containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material or by deep-drawing operations performed on sheet material
    • B65D1/34—Trays or like shallow 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
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/002—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes or webs of flexible sheet material, e.g. in folded wrappers in shrink films
    • B65D75/004—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes or webs of flexible sheet material, e.g. in folded wrappers in shrink films with auxiliary packaging elements, e.g. protective pads or frames, trays
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21J—FIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MACHE
    • D21J3/00—Manufacture of articles by pressing wet fibre pulp, or papier-mâché, between moulds

Definitions

  • This invention relates generally to molded pulp articles and more particularly to a molded pulp container or tray especially suitable for packaging foods, particularly meat.
  • Food trays produced from molded pulp are customarily used in most retail food markets today particularly for packaging fresh meat, poultry, fish or other commodities. These containers are usually in the form of a shallow, generally rectangular tray, and a preferably transparent sheet of cellophane or a heat shrinkable film is lightly wrapped or shrunk around the tray to form a package.
  • a vertical stack of food trays is generally stored in a hopper or magazine for either mechanical and/or manual denesting, and its is important that molded pulp trays be readily denestable by providing sufficient denesting clearances between adjacent lip portions of the nested trays.
  • the trays must be strong enough to resist rough handling and retain their shape and appearance.
  • Paperboard trays i.e. out and scored trays, are not especially adapted for use with shrink films, since the side walls of such board trays do not have the requisite side wall characteristics to afford uniformly appearing packages after a film is shrunk thereon.
  • the present invention involves a novel tray and package and incorporates all of the desirable advantages and benefits of prior art trays and is especially designed for use with orlwithout heat shrinkable films of the future.
  • This novel tray and the package formed therewith give increased benefits to the consumer without an appreciable increase in cost.
  • a primary object of the present invention is to provide an improved molded pulp food tray.
  • Another object of the present invention is to provide a molded pulp food tray which affords a substantially rectangular appearance before and after a package is formed therewith, which is adapted for use with a package forming wrapper, and which provides for special 3,185,371 Patented May 25, 1965 structure and shape maintaining the desired rectangular shape and resistance to internal forces on side walls when forming a package utilizing a shrink film.
  • a still further object of the present invention is to provide a novel food tray which includes an improved side wall structure insuring improved nesting and denesting clearances as Well as properly distributing the load imposed on a lowermost of a stack of nested trays.
  • Yet another object of the present invention is to provide a novel package which includes improved structure to present a substantially rectangularly appearing package of greater strength than was heretofore thought possible.
  • a still further object of the present invention is to provide a novel food tray of the character mentioned above in which the peripheral margins of the bottom wall are in a right angular relation, and these margins are flanked by side walls at a right angular relation although the side walls incorporate an intermediate substantially planar segment flanked by arcuate corners into which the segment merges, the side walls incorporating outwardly bowed margins affording a napn column effect.
  • Yet another object of the invention in conformance with those set forth, is to provide a novel tray which has an unusual side wall strength to resist deformation due to the novel side wall configuration, as well as providing a rectangular base affording means for properly orienting and truing up the trays during loading and gitckage forming with conventional wrappers or shrink
  • FIG. 1 is a perspective view of the novel food tray of the invention
  • FIG. 2 is a vertical section taken substantially on the plane of line 22 of FIG. 1;
  • FIG. 3 is a vertical section taken substantially on the plane of line 3 3 of FIG. 1;
  • FIG. 4 is an enlarged fragmentary plan view of a portion of FIG. 1 showing the outward bowing of the peripheral edges thereof;
  • FIG. 5 is an enlarged vertical section taken substantially on the plane of line 55 of FIG. 4 and showing the side wall angle at a corner with respect to a line perpendicular to a horizontal plane;
  • FIG. 6 is an enlarged vertical section taken substantially on the plane of line 66 of FIG. 4, showing an angle similar to FIG. 5 through a medical portion of the side wall;
  • FIG. 7 is a diagrammatic view, in section, showing the shape of the initially deposited tray preform and the manner in which the peripheral flange or edge of the tray is formed by a pressure head;
  • FIG. 8 is a view similar to FIG. 7 showing the manner in which the tray preform is removed from a forming die by means of a delivery head;
  • FIG. 9 is a bottom plan view of the tray on a reduced scale
  • FIG. 10 is a perspective view of a package formed by using a shrink film wrapper on the tray illustrated in FIG. 1, and showing by means of arrows the manner in which tension is applied to the tray during shrinking of the wrapper and the rectangular shape retained in the completed package;
  • FIG. 11 is a vertical section taken substantially on the plane of line 1111 of FIG. 10, indicating by means of legends and phantom lines the manner in which a shrunk wrapper will orient the tray into the substantially rectangular condition shown in FIG. 10;
  • FIG. 12 is a fragmentary vertical section through a plurality of nested trays of the invention taken substantially through a corner similar to FIG.
  • FIG. 13 is a view similar to FIG. 12 showing the daylight or clearance between the side or end walls of the nested trays, this section being substantially through a side wall similar to FIG. 6;
  • FIG. 14 is a fragmentary bottom plan view, similar to the side wall portion of FIG. 9, showing how a relatively long side wall includes a substantially rectangular planar portion flanked by halves of arcuate segments.
  • the novel food tray is produced from a pulp slurry by means of conventional suction molding equipment.
  • FIGS. 7 and 8 the fragmentary portion of a conventional foraminous forming die is indicated generally at 10 and will have deposited thereon, when immersed in a pulp slurry vat, a tray preform 12, the peripheral edges thereof being masked by a conventional deckle ring 14.
  • the preform 12 is removed from the forming die 10 by means of a delivery head 16, as is conventional, the preform 12 being formed with a reformed, angular peripheral edge 13 as clearly seen in FIG. 7.
  • the preform 12 is engaged by a pressure head 20, while still immersed, to form the final tray shape including a flat bottom 22, angular side walls 24 and the angular peripheral flange 18.
  • the surface of a molded article opposite that surface formed on the forming die is relatively rough and of a porous character.
  • the improved trays of the present invention particularly present a clean and uniform, relatively smooth, outer surface on the final product.
  • the preform 12 After the preform 12 is pressed, it is removed from the forming die 10 by means of a suitably conformed delivery head 26 by means of a combination of air pressure from within the forming die 10 and suction in the delivery head 26.
  • the delivery head profile as seen in FIG. 8, in no way interferes with the previously formed configuration of the tray preform.
  • the preformed, substantially rigid flange 18 is disposed in angular relation with respect to the general plane of the side wall 24 to provide an unusual structural strength.
  • the pulp of the preform is compressed at the flange to provide a smooth, compressed, strong peripheral reinforcing rib.
  • peripheral, angular flanges 18 provide a clear and unobstructed denesting space 30 for receiving cooperating portions of denesting equipment (not shown) therein. Additionally, clue to application of the pressure head and the formation of the peripheral flange 18, trays are produced with uniform accuracy to insure proper nesting, as well as a uniform appearance and function.
  • a generally transparent, heat shrink Wrapper of polyethylene or the like is disposed in overlying relationship with respect to the open top of the tray and the peripheral flange thereof.
  • This wrapper i.e. the package formed with the food and food tray, is then subjected to a relatively hot blast of air, for example, which causes the wrapper to shrink and become taut.
  • the wrapper when shrinking, does so uniformly; however, if the tray has a long length, the longer dimension will have proportionately more shrinkage lengthwise than that portion of the wrapper disposed widthwise. This results in greater tension forces on the walls of the food tray opposing the proportionately greater shrinkage of the wrapper.
  • the present tray has an unusual side wall strength against inward deformation, and thus adequately resists all of the forces due to any disproportionate film shrinkage.
  • the novel food tray of the invention is indicated generally at 32 in FIG. 1.
  • the tray 32 includes a planar bottom wall 22, side walls 24- and end walls 25. Extending about the upper edge of the walls 24 and 25 and integral therewith is the downwardly angled, reformed peripheral edge 18.
  • the downwardly angled flange 18 is approximately at right angles to the general angle of the side and end walls and provides an extremely rigid and structurally strong reinforcement for the tray as well as, due to the reforming pressure, provides a very clean and neat appearing tray.
  • this tray utilizes in effect a solen column technique in that the outer margins of the flange 18 curve slightly outwardly, and when observing the tray, one immediately receives the impression that the tray is rectangular.
  • the solen column effect present a rectangular appearance to the tray prior to forming a package, as will be described in detail with respect to FIGS. 10 and 11, for example, but when a shrink wrapper is disposed on the food tray and it is shrunk into the condition shown in FIGS. 10 and 11, tension, which is caused due to the shrinking of the film, which may be twice as much lengthwise as widthwise, for example, as indicated by the direction arrows in FIG. 10, results in the peripheral edges of the tray being drawn to a configuration or closely approaching a true rectangle.
  • FIGS. 10 and 11 clearly emphasizes the manner in which the relatively shallow, arcuate periphery of the tray of the invention compensates for the application of the shrink film or Wrapper 34. Observe, for example, the legends curved edge and straight edge of FIG. 11, in relation to the plastic pull caused by the shrink film 34.
  • the are of the flange 18 bordering end walls 25 is appreciably greater than one might expect in order to compensate for the increased tension due to shrinking of the film lengthwise of the tray.
  • the angular relationship at the corners 36 of the tray 32 is distinguishably different. It will be observed that the angle A of FIG. 5 is appreciably less than the angle B of FIG. 6, the angles varying, depending upon the size and depth of the food trays, and thus the lesser angle of the corners 36 of the food tray is that which determines the stacking interval of the nested cartons.
  • substantially planar, arcuate segments are formed in these side walls 24 and 25 as indicated at 38, 39 and 40.
  • These arcuate segments are essentially planar, extending generally from beneath the peripheral flange 18 of the tray and merging on a radius into the bottom wall 22 of the tray, and at opposite ends merging into the arcuate corners 36 of the tray.
  • the arcuate segments 38 and 40 are at a greater angle than the corners 36 and accordingly do not interfere with ready denesting of the improved food tray inasmuch as the shallow angles at the corners 36, as previously mentioned, control the nesting relationship of a stack of trays (see FIGS. 12 and 13).
  • FIG. 14 there is disclosed one-half of bottom of a relatively long food tray.
  • a central portion 39' of substantially rectangular shape is disposed between the segments 38'.
  • bottom walls 22, 22' are each bordered by peripheral margins in true right angular relationconnected by an arc at the base of the corners.
  • the true rectangular relation provides means whereby design of the tray is facilitated and in which the final product may be readily related and oriented in denesting equipment, as well as permitting the tray to be readily oriented on packing and wrapping equipment.
  • the rectangularly related bottom wall margins are connected medially to the base of the substantially planar side wall segments 38 or 40 in FIGS. 1-9, or the substantially planar side wall segments 38', 39, for example, in FIG. 16. It will be recalled that the essentially planar segments 38, 40 and 38', 39' merge into arcuate side wall portions 36 or 36.
  • the side wall geometry i.e. rectangular base, arcuate corners flanking substantially planar segments, arcuate side wall margins, and peripheral flanges, evolves an unusual resistance to inward deformation or deflection, i.e. about /2 inch in conventional sized trays. Not only is an unusual wall strength provided, but a true rectangular base is provided with the pleasing appearance of the arcuate side wall margins to afford the previously mentioned napn column effect.
  • the trays in the stack are in substantially the same form in a stack as they are when unstacked.
  • a molded container for food products or the like comprising a shallow tray having a bottom wall, upstanding side and end walls integral with said bottom Wall and having a peripheral margin, said side and end walls being disposed in substantially rectangular relation and terminating in arcuate corners, an internal angle between said side wall and said bottom wall at a central portion of said arcuate corners being less than a comparable angle between said side and end wall and said bottom Wall at medial portions of said side and end walls.
  • a molded container as set forth in claim 1 in which said peripheral margin bows outwardly in a general are from said corners along at least one of said side walls.
  • a molded container as set forth in claim 1 in which said bottom is bordered by right angularly related margins, said peripheral margin of said side and end walls being bowed outwardly from said arcuate corners.
  • a molded container for food products or the like including a bottom wall bordered by upstanding walls, the improvement comprising a linear margin bordering one side of said bottom wall at the base of one of said bordering walls, said one bordering wall comprising an intermediate substantially planar portion merging into flanking arcuate corners joining adjacent bordering walls.
  • said one bordering wall includes an upper peripheral margin bowing outwardly from said flanking arcuate corners.
  • said one bordering wall includes an upper peripheral margin extending angularly and downwardly from the upper edge of said one bordering wall.
  • a nested stack of molded containers each container comprising a shallow tray having a bottom wall, upstanding side and end walls integral with said bottom wall and having a peripheral margin, said side and end walls be ing disposed in substantially rectangular relation and terminating in arcuate corners, an internal angle between said side wall and said bottom wall at a central portion of said arcuate corners being less than a comparable angle 7 8 between said side and end wall and said bottom wall at References Cited by the Examiner medial portions of said side and end walls, the angular UNITED STATES PATENTS variations between the corner and end walls provlding a daylight portion between adjacent corresponding inter- ,6 9,5 2/53 Chaplin 229-25 mediate wall portions and engagement at the corners 5 2,975,931 3/61 Harrison 229-25 between adjacent trays of a stack facilitating tray denesting, providing a minimum frictional contact area THERON CONDON, Primary Examlllerbetween adjacent trays, and at the stack ends maintain- FRANKLIN GARRETT Examinen ing

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Ceramic Engineering (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Packages (AREA)
US283061A 1963-05-24 1963-05-24 Molded pulp article Expired - Lifetime US3185371A (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
US283061A US3185371A (en) 1963-05-24 1963-05-24 Molded pulp article
GB46459/63A GB1042728A (en) 1963-05-24 1963-11-25 Improvements in or relating to molded trays or containers
DK566963AA DK104221C (da) 1963-05-24 1963-12-05 Emballagebakke af pulpmasse.
ES0294513A ES294513A1 (es) 1963-05-24 1963-12-14 Perfeccionamientos en la construcciën de envases moldeados para productos alimenticios o similares
BE641398D BE641398A (en)) 1963-05-24 1963-12-17
LU45062D LU45062A1 (en)) 1963-05-24 1963-12-19
NL6400585A NL6400585A (en)) 1963-05-24 1964-01-24
CH354464A CH451805A (fr) 1963-05-24 1964-03-19 Emballage pour denrées alimentaires
SE5185/64A SE303250B (en)) 1963-05-24 1964-04-27
FI641072A FI43283C (fi) 1963-05-24 1964-05-20 Ravintoainetuotteitten pakkaus
NO153355A NO115872B (en)) 1963-05-24 1964-05-23

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US283061A US3185371A (en) 1963-05-24 1963-05-24 Molded pulp article

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US3185371A true US3185371A (en) 1965-05-25

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US283061A Expired - Lifetime US3185371A (en) 1963-05-24 1963-05-24 Molded pulp article

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US (1) US3185371A (en))
BE (1) BE641398A (en))
CH (1) CH451805A (en))
DK (1) DK104221C (en))
ES (1) ES294513A1 (en))
FI (1) FI43283C (en))
GB (1) GB1042728A (en))
LU (1) LU45062A1 (en))
NL (1) NL6400585A (en))
NO (1) NO115872B (en))
SE (1) SE303250B (en))

Cited By (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3357625A (en) * 1966-06-07 1967-12-12 Malanco Inc Meat tray with window
US3375966A (en) * 1967-02-10 1968-04-02 Keyes Fibre Co Full depth carton for large eggs
US3391816A (en) * 1966-11-04 1968-07-09 Rexall Drug Chemical Lunch box with slidable divider
US3397068A (en) * 1966-06-21 1968-08-13 Dow Chemical Co Method of packaging fresh meat
US3682365A (en) * 1971-01-27 1972-08-08 Diamond Int Corp High strength open bottom meat container
US3700096A (en) * 1970-03-30 1972-10-24 Diamond Int Corp Food packaging tray
US3718274A (en) * 1972-04-24 1973-02-27 Diamond Int Corp High strength open bottom packaging trays
US3756492A (en) * 1972-05-24 1973-09-04 Diamond Int Corp High strength open bottom packaging tray
US3811595A (en) * 1972-06-12 1974-05-21 Plastics Inc Interlocking serving tray
USD249233S (en) 1976-11-15 1978-09-05 Mobil Oil Corporation Packaging tray or the like
US4162759A (en) * 1977-12-30 1979-07-31 Diamond International Corporation Food packaging tray
US4163818A (en) * 1978-02-15 1979-08-07 Pierre Wernli Anti-slip serving tray and the method of manufacturing thereof
US4277267A (en) * 1979-12-17 1981-07-07 Perfect Filter Corporation Air filter assembly
USD268568S (en) 1980-11-18 1983-04-12 Mobil Oil Corporation Meat packaging tray or the like
USD283679S (en) 1983-05-25 1986-05-06 Lever Brothers Company Food container or similar article
US4623088A (en) * 1985-06-28 1986-11-18 Mobil Oil Corporation Reinforced packaging tray
US4856704A (en) * 1988-05-09 1989-08-15 Ossid Corporation Machine packaging tray
US5018623A (en) * 1990-03-12 1991-05-28 Tekni-Plex Inc. Molded plastic overwrap tray
US5088640A (en) * 1991-09-06 1992-02-18 James River Corporation Of Virginia Rigid four radii rim paper plate
USD364559S (en) 1994-01-06 1995-11-28 Ossid Corporation Film wrapped product filled tray having an offset bottom seal
US5472092A (en) * 1994-03-30 1995-12-05 H. J. Heinz Company Shrink wrapped package and method for its production
US5875613A (en) * 1994-04-06 1999-03-02 Maskell; Richard Method and device for evacuating gas tight envelope
US5934472A (en) * 1998-04-06 1999-08-10 Tekni-Plex, Inc. Processor tray
WO2003020604A1 (en) * 2001-08-31 2003-03-13 Del Monte Corporation Package having cup with beveled sealing flange
US20040040973A1 (en) * 2002-08-27 2004-03-04 Tekni-Plex, Inc. Packaging container
USD609530S1 (en) * 2009-03-21 2010-02-09 WKI Holding Company, Ltd. Glass casserole
USD611305S1 (en) * 2009-03-21 2010-03-09 Wki Holding Company, Inc. Glass baking dish
USD673808S1 (en) 2012-03-10 2013-01-08 Wki Holding Company, Inc. Container lid
USD673807S1 (en) 2012-03-10 2013-01-08 Wki Holding Company, Inc. Container lid
USD675057S1 (en) 2012-03-09 2013-01-29 Wki Holding Company, Inc. Lid
USD687708S1 (en) * 2012-06-12 2013-08-13 Conagra Foods Rdm, Inc. Container
USD697402S1 (en) * 2011-05-25 2014-01-14 Parmacotto S.P.A. Container for food products
JP2014034404A (ja) * 2012-08-08 2014-02-24 Toyo Aluminum Ekco Products Kk 金属箔成型容器
US8733550B2 (en) 2012-03-09 2014-05-27 Wki Holding Company, Inc. Nesting container lids with snap on wings
WO2018150361A1 (en) * 2017-02-16 2018-08-23 Alto Packaging Limited Improvements to trays
US20180345596A1 (en) * 2017-06-02 2018-12-06 3D Systems, Inc. Three dimensional printing system with improved support fixture
US20210292974A1 (en) * 2018-07-19 2021-09-23 Celwise Ab Laminated structure and method of its production

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2730216B1 (fr) * 1995-02-08 1997-03-14 Secret Patrick Emballage de protection et presentation pour produits fragiles, irreguliers et sujets au tassement
GB9511282D0 (en) * 1995-06-05 1995-08-02 Smith David S Packaging Apparatus and method for producing moulded articles

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2629533A (en) * 1941-02-08 1953-02-24 Chaplin Corp Molded fiber article
US2975931A (en) * 1959-06-04 1961-03-21 Grace W R & Co Container

Patent Citations (2)

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US2629533A (en) * 1941-02-08 1953-02-24 Chaplin Corp Molded fiber article
US2975931A (en) * 1959-06-04 1961-03-21 Grace W R & Co Container

Cited By (47)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3357625A (en) * 1966-06-07 1967-12-12 Malanco Inc Meat tray with window
US3397068A (en) * 1966-06-21 1968-08-13 Dow Chemical Co Method of packaging fresh meat
US3391816A (en) * 1966-11-04 1968-07-09 Rexall Drug Chemical Lunch box with slidable divider
US3375966A (en) * 1967-02-10 1968-04-02 Keyes Fibre Co Full depth carton for large eggs
US3700096A (en) * 1970-03-30 1972-10-24 Diamond Int Corp Food packaging tray
US3682365A (en) * 1971-01-27 1972-08-08 Diamond Int Corp High strength open bottom meat container
US3718274A (en) * 1972-04-24 1973-02-27 Diamond Int Corp High strength open bottom packaging trays
US3756492A (en) * 1972-05-24 1973-09-04 Diamond Int Corp High strength open bottom packaging tray
US3811595A (en) * 1972-06-12 1974-05-21 Plastics Inc Interlocking serving tray
USD249233S (en) 1976-11-15 1978-09-05 Mobil Oil Corporation Packaging tray or the like
US4162759A (en) * 1977-12-30 1979-07-31 Diamond International Corporation Food packaging tray
US4163818A (en) * 1978-02-15 1979-08-07 Pierre Wernli Anti-slip serving tray and the method of manufacturing thereof
US4277267A (en) * 1979-12-17 1981-07-07 Perfect Filter Corporation Air filter assembly
USD268568S (en) 1980-11-18 1983-04-12 Mobil Oil Corporation Meat packaging tray or the like
USD283679S (en) 1983-05-25 1986-05-06 Lever Brothers Company Food container or similar article
US4623088A (en) * 1985-06-28 1986-11-18 Mobil Oil Corporation Reinforced packaging tray
US4856704A (en) * 1988-05-09 1989-08-15 Ossid Corporation Machine packaging tray
US5018623A (en) * 1990-03-12 1991-05-28 Tekni-Plex Inc. Molded plastic overwrap tray
US5088640A (en) * 1991-09-06 1992-02-18 James River Corporation Of Virginia Rigid four radii rim paper plate
USD364559S (en) 1994-01-06 1995-11-28 Ossid Corporation Film wrapped product filled tray having an offset bottom seal
US5472092A (en) * 1994-03-30 1995-12-05 H. J. Heinz Company Shrink wrapped package and method for its production
US5664684A (en) * 1994-03-30 1997-09-09 H.J. Heinz Company Shrink wrapped package and method for its production
US5875613A (en) * 1994-04-06 1999-03-02 Maskell; Richard Method and device for evacuating gas tight envelope
US5934472A (en) * 1998-04-06 1999-08-10 Tekni-Plex, Inc. Processor tray
CN1304246C (zh) * 2001-08-31 2007-03-14 岱尔蒙特股份有限公司 具有带削斜密封凸缘的杯子的包装盒
WO2003020604A1 (en) * 2001-08-31 2003-03-13 Del Monte Corporation Package having cup with beveled sealing flange
US6648163B2 (en) * 2001-08-31 2003-11-18 Del Monte Corporation Package having cup with beveled sealing flange
US6918506B2 (en) * 2002-08-27 2005-07-19 Tekni-Plex, Inc. Packaging container
US20040040973A1 (en) * 2002-08-27 2004-03-04 Tekni-Plex, Inc. Packaging container
USD609530S1 (en) * 2009-03-21 2010-02-09 WKI Holding Company, Ltd. Glass casserole
USD611305S1 (en) * 2009-03-21 2010-03-09 Wki Holding Company, Inc. Glass baking dish
USD633339S1 (en) 2009-03-21 2011-03-01 Wki Holding Company, Inc. Glass casserole
USD697402S1 (en) * 2011-05-25 2014-01-14 Parmacotto S.P.A. Container for food products
US9187223B2 (en) 2012-03-09 2015-11-17 Wki Holding Company, Inc. Nesting container lids with snap on wings
USD675057S1 (en) 2012-03-09 2013-01-29 Wki Holding Company, Inc. Lid
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Also Published As

Publication number Publication date
ES294513A1 (es) 1964-01-16
LU45062A1 (en)) 1964-02-19
FI43283B (en)) 1970-11-02
DK104221C (da) 1966-04-18
FI43283C (fi) 1971-02-10
NO115872B (en)) 1968-12-16
NL6400585A (en)) 1964-11-25
SE303250B (en)) 1968-08-19
BE641398A (en)) 1964-04-16
CH451805A (fr) 1968-05-15
GB1042728A (en) 1966-09-14

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