US3040948A - Molded pulp article - Google Patents

Molded pulp article Download PDF

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Publication number
US3040948A
US3040948A US789433A US78943359A US3040948A US 3040948 A US3040948 A US 3040948A US 789433 A US789433 A US 789433A US 78943359 A US78943359 A US 78943359A US 3040948 A US3040948 A US 3040948A
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US
United States
Prior art keywords
pulp
tray
depressions
containers
absorbent
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
US789433A
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English (en)
Inventor
Wells Roger
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 National Corp
Original Assignee
Diamond National 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
Priority to NL243059D priority Critical patent/NL243059A/xx
Priority to NL107773D priority patent/NL107773C/xx
Priority to NL257295D priority patent/NL257295A/xx
Priority to LU37314D priority patent/LU37314A1/xx
Priority to NL108395D priority patent/NL108395C/xx
Priority to LU37879D priority patent/LU37879A1/xx
Priority to NL239836D priority patent/NL239836A/xx
Priority to NL121132D priority patent/NL121132C/xx
Application filed by Diamond National Corp filed Critical Diamond National Corp
Priority to US789433A priority patent/US3040948A/en
Priority to GB1454159A priority patent/GB864039A/en
Priority to DED30560A priority patent/DE1091031B/de
Priority to FR797120A priority patent/FR1226989A/fr
Priority to CH354716D priority patent/CH354716A/fr
Priority to GB3147959A priority patent/GB867470A/en
Priority to DED31572A priority patent/DE1106242B/de
Priority to FR808710A priority patent/FR1239600A/fr
Priority to DK390259AA priority patent/DK100346C/da
Priority to CH8018859A priority patent/CH363934A/fr
Priority to BE584277A priority patent/BE584277A/fr
Priority to GB3334460A priority patent/GB924689A/en
Priority to SE1120960A priority patent/SE301451B/xx
Priority to FR845089A priority patent/FR1277466A/fr
Priority to LU39493D priority patent/LU39493A1/xx
Priority to CH1358560A priority patent/CH390783A/de
Priority to DED34896A priority patent/DE1177546B/de
Application granted granted Critical
Publication of US3040948A publication Critical patent/US3040948A/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
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/24—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants
    • B65D81/26—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants with provision for draining away, or absorbing, or removing by ventilation, fluids, e.g. exuded by contents; Applications of corrosion inhibitors or desiccators
    • B65D81/264—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants with provision for draining away, or absorbing, or removing by ventilation, fluids, e.g. exuded by contents; Applications of corrosion inhibitors or desiccators for absorbing liquids
    • B65D81/265—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants with provision for draining away, or absorbing, or removing by ventilation, fluids, e.g. exuded by contents; Applications of corrosion inhibitors or desiccators for absorbing liquids the absorbent being placed beneath a false bottom
    • 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
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/24—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants
    • B65D81/26—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants with provision for draining away, or absorbing, or removing by ventilation, fluids, e.g. exuded by contents; Applications of corrosion inhibitors or desiccators
    • B65D81/264—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants with provision for draining away, or absorbing, or removing by ventilation, fluids, e.g. exuded by contents; Applications of corrosion inhibitors or desiccators for absorbing liquids
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21J—FIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MACHE
    • D21J5/00—Manufacture of hollow articles by transferring sheets, produced from fibres suspensions or papier-mâché by suction on wire-net moulds, to couch-moulds
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21J—FIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MACHE
    • D21J7/00—Manufacture of hollow articles from fibre suspensions or papier-mâché by deposition of fibres in or on a wire-net mould

Definitions

  • Containers made of molded pulp are customarily used in most retail food markets today for packaging fresh meat, poultry, fish or other commodities from which some natural juices are likely to exude. These containers are usually in the form of a shallow, generally rectangular tray, and a transparent covering sheet of cellophane or polyethylene may be Wrapped around the tray and heat-sealed to the bottom surface thereof. Such containers present an attractive display While providing adequate protection during the sale and temporary storage of foodstuffs, particularly for naturally juicy fresh poultry and the like, from which some blood may exude.
  • this tray may be non-absorbent or only slightly absorbent, and instead of becoming absorbed the liquid is mechanically trapped in the cup-shaped depressions due to their particular size, shape and arrangement.
  • the present invention relates to an improved construction for food containers designed to overcome the abovementioned problems associated with the presence of excess fiuid drained from packaged foods. This is accomplished, in accordance with the invention, by providing molded pulp trays and other containers, which may be molded from a non-absorbent grade of pulp, with an integrally molded layer of absorbent pulp on the upper surface of its bottom wall. This absorbent layer may be provided with a multiplicity of uniformly distributed cup-shaped depressions adapted to trap any excess liquid which then becomes absorbed into the sides of said depressions.
  • the invention is embodied in containers which are of two ply construction in their bottom portion and single ply elsewhere, such as their side walls. Another important aspect of the invention relates to new methods of manufacturing molded pulp articles which are two ply in specific areas.
  • a specific object of the invention is to provide new and improved molded pulp containers for packaging foods and methods of molding such containers.
  • Another object of the invention is to provide new and improved food containers, particularly suitable for packaging fresh poultry or other naturally wet or juicy food, which containers are provided with means for trapping any excess freely flowable fiuids drained from the packaged r'ood.
  • Still another object of the invention is to provide new and improved food containers having integral means for absorbing excess fluids without dehydrating food packaged therein.
  • Yet another object of the invention is to provide molded pulp trays, dishes and other types of containers with an integral highly absorbent portion limited to the upper surface of the inside bottom wall thereof, and to provide new methods of molding such containers.
  • FIG. 1 is a top plan view of a molded pulp tray embodying the invention
  • FIG. 2 is an enlarged vertical section taken along the line 22 of FIG. 1;
  • FIG. 3 is a sectional view corresponding to FIG. 2 but showing a modification of the invention
  • FIG. 4 is a vertical section of a portion of the bottom wall of a molded pulp tray representing another embodiment of the invention.
  • FIG. 5 is a sectional view of a suction mold shown at one stage of a molding method embodying the invention.
  • the molded pulp trays embodying the invention shown in the drawings appear relatively shallow and generally rectangular in overall configuration, and it should be understood that this configuration may be varied as desired.
  • the illustrated trays are particularly suitable for packaging fresh meat, poultry or fish for sale. in retail food markets.
  • the tray shown in FIGS. 1 and 2 comprises a gen erally flat horizontal bottom wall 10 from the edges of which project integral upstanding inclined sidewalls 12 terminating in a peripheral lip 14. of the bottom well ill on the inside of the tray is provided with a multiplicity of cup-shaped depressions l6 uniformly distributed over the entire area of this surface.
  • the entire bottom wall lit of the tray is composed of two integrally united layers of molded pulp, constituted by an upper layer 18 and a lower layer Ztl, resulting in a composite two-ply construction.
  • the upper layer 18 is intended to be highly absorbent, and for this purpose it may be molded from unsized sulphite pulp stock.
  • the lower layer 2i? as well as the integral sidewalls 12 and the peripheral lip 14 are preferably nonabsorbent or only slightly absorbent in character, and they may be molded from highly sized groundwork stock.
  • the sidewalls 12 and the lip 14 are preferably of singleply homogeneous construction, and none of the highly absorbent pulpstock employed to form the upper layer 18 of the bottom wall should be allowed to extend elsewhere.
  • the cup-shaped depressions to may be limited in depth to extend only partially through the upper layer 18, or they may extend completely through the layer 18, and they may also extend partially through the thickness of the lower layer 20 of the bottom wall it
  • the depressions 16 when properly constructed in size, shape and arrangement serve to provide traps for mechanically holding any freely flowable fluid, and these depressions also impart a distinctive attractive appearance to the trays. Any fluid trapped within the depressions 16 eventually becomes absorbed into the cylindrical side walls thereof. However, primarily the absorbency of the entire upper layer 1% is relied upon to control the excess fluid, and the provision of the depressions 16 to serve as fluid traps is optional.
  • FIG. 3 shows an embodiment of the invention wherein'such depressions have been omitted.
  • the tray is provided with a bottom wall Tall, integral upstanding sidewalls 32, and a peripheral lip 34, which are related to each other in the same manner as the corresponding parts described for the tray shown in FIGS. 1 and 2.
  • the bottom wall is composed of two integrally united layers of molded pulp, namely, an
  • the cup-shaped depressions should have smooth cylindrical sidewalls and sharply defined upper edges. They may be formed with such characteristics simultaneously with the formation of the main body of the molded pulp tray, by providing the usual drainage screen on the surface of the mold with a plurality of uniformly spaced and distributed solid projecting nubbins made of metal, rubber or a plastic. It has been observed that the pulp fibers which deposit in the vicinity of these nubbins assume an irregular or heterogeneous pattern, whereasrthe pulp fibers deposited on the perforate other portions of the mold appear felted in a regular symmetrical pattern.
  • FIG. 4 represents a modification of the tray shown in FIGS. 1 and 2, wherein an extra protective coating is employed to assist in preventing any tendency to dehydrate food packaged in the tray.
  • This tray is provided with a bottom wall 40, of which only a portion is shown in FIG. 4, and the sidewalls and rim of this tray which do not appear in this view are identical in structure and in function to the corresponding sections of the trays depicted in FIGS. 1, 2 and 3.
  • the bottom wall 4t includes a lower layer 42 of non-absorbent or slightly absorbent molded pulp, a highly absorbent pulp layer 44 is superimposed upon and integrally united with the lower layer 42, and the entire area of the bottom wall 4@ is provided with a multiplicity of cup-shaped depressions 46 which correspond to the depressions 7.6 of the tray disclosed in FIGS. 1 and 2.
  • the tray shown in FIG. 4 is equipped with a thin liquid impervious protective coating 43 covering the entire upper surface of the highly absorbent layer 44.
  • the protective coating 48 may be formed by spraying a suitable sizing composition onto the layer 44, or
  • the protective coating 43 whether formed by spraying or by a bonded sheet or otherwise, must not extend down into the depressions 46. It is intended that any free fluid trapped within the depressions as should become absorbed into the portions of the layer 44 constituting the cylindrical side walls of these depressions. Whatever food is packaged in the tray rests upon the protective coating 48, and due to the liquid impervious nature of this coating the normal tendency of the absorbent layer 44 to cause dehydration of the packaged food is prevented.
  • the tray illustrated in FIG. 4 offers the greatest protection against possible dehydration of food packaged therein, but that some measure of protection is provided in all of the disclosed containers embodying the invention, due to the confinement of the highly absorbent pulp layer to the upper inside surface of the bottom of the tray while the upstanding sidewalls of the tray are made non-absorbent or only very slightly absorbent. Moreover, due to the previously described deposition pattern of the pulp fibers, the surfaces possessing the greatest powers of absorption are located down inside of the cup-shaped depressions, and this fact also contributes to the prevention of dehydration of the packaged food.
  • the preferred method molding containers embodying the invention involves the successive deposition of two different layers of pulp from two different grades of pulp stock onto a specially constructed suction mold.
  • FIG. 5 there is shown a portion of such a mold with the two different layers of pulp deposited thereon at an intermediate stage of the molding operation.
  • This mold is provided with a tubular body 59 adapted to be connected to a suitable source of suction. Covering the open end of the tubular body 50 is a perforated forming plate 52 contoured to produce a generally rectangular shallow tray.
  • a foraminous wire straining screen 54 is secured over the forming face of the plate 52 by means of a peripheral retaining ring 56.
  • the straining screen 54 may be of the ordinary well known type for production of imperforate articles similar to the tray shown in FIG. 3, and for the production of trays having the cupshaped depressions 16 or 46, this screen could be provided with the previously described spaced solid project ing nubbins.
  • the perforated forming plate 52 is provided with a plurality of spaced transverse perforations 58, and it is important to notice that the perforations 58 are present only in areas of the forming face where the molding of a two-ply structure is desired.
  • a two-ply structure is formed directly over the area of the forming plate 52 where the perforations 58 are located, and elsewhere over this forming plate a single ply structure is deposited.
  • the thin sulphite stock has such a high drainage rate that the slurry passes through the first fibers deposited above the perforations and gradually builds up a relatively thick layer 60 of absorbent molded pulp, but no fibers are deposited elsewhere on the mold from this dilute slurry.
  • the partially coated mold, having the layer 60 coated thereon only above the perforations 58 is then submerged in the thick slurry of groundwood pulp stock, the fibers deposited from the slurry accumulate on top of the layer 60 until a natural barrier against further drainage is formed, and then deposition occurs over the remainder of the forming face of the plate 52 resulting in the formation of a layer 60.
  • the length of immersing and the degree of suction applied to the mold in the two different slurries can be so controlled that the wall thickness in the single ply portions is substantially the same as that in the two-ply portions of the tray.
  • the finished article may have the same dimensions and proportions as a conventional tray.
  • the thin sulphite pulp stock contemplated should preferably contain about A by weight of unsized pulp fibers in water, and this percentage should not be greater than about 1%.
  • the relatively thick slurry of groundwood stock is preferably kept at about 1% by weight of pulp fibers in water, which is approximately the consistency usually employed for molding simple pulp articles such as trays. However, somewhat thicker slurries of the groundwood stock, up to about 3%, may be employed if desired.
  • a small quantity of a suitable sizing composition may be incorporated into the groundwood slurry.
  • the consistency of both the sulphite stock and the groundwood stock may be varied slightly to regulate the thickness of the deposited layers of pulp fibers. Sulphite stock possesses a higher drainage rate than that of groundwood stock at the same percentage of pulp fibers, and advantage is taken of this dilference to produce molded pulp articles in accordance with the present invention.
  • Molds having perforations limited to areas where the molding of a two-ply structure is desired may be dipped successively into two separate vats of slurry, or this mold may be placed on a rotary drum type molding machine adapted to advance the mold through a vat divided vertically into two sections containing the two different slurries, in a manner well known to those skilled in the art.
  • a rotary drum type molding machine adapted to advance the mold through a vat divided vertically into two sections containing the two different slurries, in a manner well known to those skilled in the art.
  • more than two layers may be deposited in this fashion if desired.
  • pocketed molded pulp containers for packaging industrial or electronic parts may be provided with pockets of two-ply construction including a cushioning lining of one grade of pulp, while the main body of the container may be made more rigid and strong by a different grade of pulp in a single ply.
  • a food container of pulp material adapted for the packaging of meat and poultry comprising a tray having a bottom wall and upstanding side Walls, said bottom wall having three plies of material extending therethrough, the lower ply being relatively non-absorbent, the intermediate ply being relatively absorbent and the upper ply being an impermeable film, depressions extending downwardly from the upper surface of said bottom wall through the upper ply and at least partially through the intermediate ply, said depressions being of such shape and size as to be capable of mechanically trapping any juices therein due to the surface tension of said juices, whereby any juices resulting from any food products stored therein will pass into said depressions from whence they will be absorbed by said intermediate ply.
  • depressions are in the shape of cylindrical cups, each said cup having a sharply defined vertical side wall and upper lip.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Packages (AREA)
US789433A 1958-07-23 1959-01-27 Molded pulp article Expired - Lifetime US3040948A (en)

Priority Applications (25)

Application Number Priority Date Filing Date Title
NL107773D NL107773C (da) 1958-07-23
NL257295D NL257295A (da) 1958-07-23
LU37314D LU37314A1 (da) 1958-07-23
NL108395D NL108395C (da) 1958-07-23
NL243059D NL243059A (da) 1958-07-23
LU37879D LU37879A1 (da) 1958-07-23
NL239836D NL239836A (da) 1958-07-23
NL121132D NL121132C (da) 1958-07-23
US789433A US3040948A (en) 1959-01-27 1959-01-27 Molded pulp article
GB1454159A GB864039A (en) 1958-07-23 1959-04-28 Improvements in or relating to articles moulded from fibrous material
DED30560A DE1091031B (de) 1958-07-23 1959-04-29 Behaelter aus fester und schwach saugfaehiger Fasermasse, insbesondere zum Verpackenvon Fleisch und Gefluegel
FR797120A FR1226989A (fr) 1958-07-23 1959-06-10 Récipient pour produits alimentaires
CH354716D CH354716A (fr) 1958-07-23 1959-06-15 Récipient en pâte de bois pour produit alimentaire
GB3147959A GB867470A (en) 1958-07-23 1959-09-15 Molded pulp article and molding method
DED31572A DE1106242B (de) 1958-07-23 1959-09-26 Behaelter aus fester und schwach saugfaehiger Papiermasse, insbesondere zum Verpacken von Fleisch und Gefluegel
FR808710A FR1239600A (fr) 1958-07-23 1959-10-28 Récipients en pâte moulée et leur procédé de fabrication
DK390259AA DK100346C (da) 1959-01-27 1959-10-30 Madvarebeholder.
CH8018859A CH363934A (fr) 1958-07-23 1959-11-02 Récipient en pâte moulée
BE584277A BE584277A (fr) 1959-01-27 1959-11-03 Récipients en pâte moulée et leur procédé de fabrication
GB3334460A GB924689A (en) 1958-07-23 1960-09-28 Improvements in or relating to molded containers
SE1120960A SE301451B (da) 1958-07-23 1960-11-21
FR845089A FR1277466A (fr) 1958-07-23 1960-11-25 Récipient pour aliments et son procédé de fabrication
LU39493D LU39493A1 (da) 1958-07-23 1960-12-03
CH1358560A CH390783A (de) 1958-07-23 1960-12-05 Behälter und Verfahren zu dessen Herstellung
DED34896A DE1177546B (de) 1958-07-23 1960-12-07 Behaelter aus Fasermasse, insbesondere zum Verpacken von Fleisch und Gefluegel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US789433A US3040948A (en) 1959-01-27 1959-01-27 Molded pulp article

Publications (1)

Publication Number Publication Date
US3040948A true US3040948A (en) 1962-06-26

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Family Applications (1)

Application Number Title Priority Date Filing Date
US789433A Expired - Lifetime US3040948A (en) 1958-07-23 1959-01-27 Molded pulp article

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Country Link
US (1) US3040948A (da)
BE (1) BE584277A (da)
DK (1) DK100346C (da)

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3128932A (en) * 1960-03-30 1964-04-14 Diamond National Corp Molded egg carton
US3155303A (en) * 1962-01-31 1964-11-03 Fred Minikes Meat packaging tray
US3264120A (en) * 1963-05-01 1966-08-02 Dow Chemical Co Meat package
US3288346A (en) * 1964-08-21 1966-11-29 Diamond Int Corp Food container
US3319873A (en) * 1963-11-20 1967-05-16 Bockenheimer Brotfabrik F Reis Wrapper for rolls
US3346400A (en) * 1965-02-08 1967-10-10 American Excelsior Corp Tray
US3464833A (en) * 1965-01-23 1969-09-02 Fishery Products Ltd Frozen food package and method of packaging frozen food
US3468468A (en) * 1967-08-14 1969-09-23 Diamond Int Corp Container
US3834606A (en) * 1972-04-06 1974-09-10 Torsten Jeppsson Ab Packaging trays and methods of making them
US3902650A (en) * 1973-11-13 1975-09-02 Eiji Kato Paper box for wrapping refrigerated meat
DE3026023A1 (de) * 1979-08-28 1981-03-19 Keyes Fibre Co., Waterville, Me. Geformter zellstoffbehaelter mit polyesterauskleidung
US4275811A (en) * 1979-08-23 1981-06-30 Cellu Products Company Receptacle for containing and displaying food products
US4321997A (en) * 1979-11-23 1982-03-30 Miller Alan H Receptacle for moisture-exuding food products
US4552600A (en) * 1982-11-23 1985-11-12 W. R. Grace & Co., Cryovac Div. Method and apparatus for manufacturing a purge trap tray
US4576278A (en) * 1982-11-23 1986-03-18 W. R. Grace & Co., Cryovac Div. Purge trap tray
US5655708A (en) * 1992-06-19 1997-08-12 Groene; Horst-Ditmar Food tray and process for manufacture
US6079555A (en) * 1992-09-25 2000-06-27 Posson; Jean Absorbent food product support
EP1561703A3 (en) * 2004-02-03 2007-08-29 Rexam Speciality Food Packaging Limited Absorbent tray container and mould and production method therefor
USD692296S1 (en) * 2012-11-15 2013-10-29 Typack S.A. Container
US20130313740A1 (en) * 2012-05-23 2013-11-28 Dennard Charles Gilpin Concrete void forming method and device
US20170267432A1 (en) * 2014-12-12 2017-09-21 Bemis Company, Inc. Flexible package with embossed liquid containment cells
WO2018195665A1 (en) * 2017-04-28 2018-11-01 Emery Silfurtun Inc. Absorbent tray with coating
US12246526B2 (en) 2022-08-24 2025-03-11 Terry Hermanson Packing material and method of manufacturing the packing material
US12391452B2 (en) 2023-09-15 2025-08-19 Terry Hermanson Packing material and method of manufacturing the packing material

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1848056A (en) * 1929-02-15 1932-03-01 Fidelity Trust Company Integral molded article
US1974898A (en) * 1934-04-30 1934-09-25 Sutherland Paper Co Pie dish or package
US2081740A (en) * 1936-04-03 1937-05-25 Ralph A Farnham Method and apparatus for making fibrous articles
US2515113A (en) * 1943-12-17 1950-07-11 Chaplin Corp Method of producing molded fiber articles
US2629533A (en) * 1941-02-08 1953-02-24 Chaplin Corp Molded fiber article
FR1086193A (fr) * 1953-11-03 1955-02-10 Emballage
US2974843A (en) * 1958-07-23 1961-03-14 Diamond National Corp Food container

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1848056A (en) * 1929-02-15 1932-03-01 Fidelity Trust Company Integral molded article
US1974898A (en) * 1934-04-30 1934-09-25 Sutherland Paper Co Pie dish or package
US2081740A (en) * 1936-04-03 1937-05-25 Ralph A Farnham Method and apparatus for making fibrous articles
US2629533A (en) * 1941-02-08 1953-02-24 Chaplin Corp Molded fiber article
US2515113A (en) * 1943-12-17 1950-07-11 Chaplin Corp Method of producing molded fiber articles
FR1086193A (fr) * 1953-11-03 1955-02-10 Emballage
US2974843A (en) * 1958-07-23 1961-03-14 Diamond National Corp Food container

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3128932A (en) * 1960-03-30 1964-04-14 Diamond National Corp Molded egg carton
US3155303A (en) * 1962-01-31 1964-11-03 Fred Minikes Meat packaging tray
US3264120A (en) * 1963-05-01 1966-08-02 Dow Chemical Co Meat package
US3319873A (en) * 1963-11-20 1967-05-16 Bockenheimer Brotfabrik F Reis Wrapper for rolls
US3288346A (en) * 1964-08-21 1966-11-29 Diamond Int Corp Food container
US3464833A (en) * 1965-01-23 1969-09-02 Fishery Products Ltd Frozen food package and method of packaging frozen food
US3346400A (en) * 1965-02-08 1967-10-10 American Excelsior Corp Tray
US3468468A (en) * 1967-08-14 1969-09-23 Diamond Int Corp Container
US3834606A (en) * 1972-04-06 1974-09-10 Torsten Jeppsson Ab Packaging trays and methods of making them
US3902650A (en) * 1973-11-13 1975-09-02 Eiji Kato Paper box for wrapping refrigerated meat
US4275811A (en) * 1979-08-23 1981-06-30 Cellu Products Company Receptacle for containing and displaying food products
DE3026023A1 (de) * 1979-08-28 1981-03-19 Keyes Fibre Co., Waterville, Me. Geformter zellstoffbehaelter mit polyesterauskleidung
US4321997A (en) * 1979-11-23 1982-03-30 Miller Alan H Receptacle for moisture-exuding food products
US4552600A (en) * 1982-11-23 1985-11-12 W. R. Grace & Co., Cryovac Div. Method and apparatus for manufacturing a purge trap tray
US4576278A (en) * 1982-11-23 1986-03-18 W. R. Grace & Co., Cryovac Div. Purge trap tray
US5655708A (en) * 1992-06-19 1997-08-12 Groene; Horst-Ditmar Food tray and process for manufacture
US6079555A (en) * 1992-09-25 2000-06-27 Posson; Jean Absorbent food product support
EP1561703A3 (en) * 2004-02-03 2007-08-29 Rexam Speciality Food Packaging Limited Absorbent tray container and mould and production method therefor
US20130313740A1 (en) * 2012-05-23 2013-11-28 Dennard Charles Gilpin Concrete void forming method and device
US9771728B2 (en) * 2012-05-23 2017-09-26 Dennard Charles Gilpin Device for forming a void in a concrete foundation
USD692296S1 (en) * 2012-11-15 2013-10-29 Typack S.A. Container
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CN110691741A (zh) * 2017-04-28 2020-01-14 埃默里·西尔弗顿公司 带涂层的可吸收托盘
US12246526B2 (en) 2022-08-24 2025-03-11 Terry Hermanson Packing material and method of manufacturing the packing material
US12391452B2 (en) 2023-09-15 2025-08-19 Terry Hermanson Packing material and method of manufacturing the packing material

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DK100346C (da) 1964-11-16

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