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Method and apparatus for forming double walled containers

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US3396430A
US3396430A US63824167A US3396430A US 3396430 A US3396430 A US 3396430A US 63824167 A US63824167 A US 63824167A US 3396430 A US3396430 A US 3396430A
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plug
die
apparatus
forming
double
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Robert F Westcott
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Dow Chemical Co
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Dow Chemical Co
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42Component parts, details or accessories; Auxiliary operations
    • B29C49/58Blowing means
    • B29C49/60Blow-needles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/0047Sheet blow-moulding, i.e. using at least two parallel sheets or a folded sheet as a preform
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42Component parts, details or accessories; Auxiliary operations
    • B29C49/48Moulds
    • B29C49/4802Moulds with means for locally compressing part(s) of the parison in the main blowing cavity
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/006Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor for making articles having hollow walls
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/08Deep drawing or matched-mould forming, i.e. using mechanical means only
    • B29C51/082Deep drawing or matched-mould forming, i.e. using mechanical means only by shaping between complementary mould parts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/26Component parts, details or accessories; Auxiliary operations
    • B29C51/30Moulds
    • B29C51/32Moulds having cutting means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D81/00Containers, 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
    • B65D81/24Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants
    • B65D81/26Adaptations 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
    • B65D81/261Adaptations 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 draining or collecting liquids without absorbing them
    • B65D81/262Rigid containers having false bottoms provided with passages for draining and receiving liquids
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42Component parts, details or accessories; Auxiliary operations
    • B29C49/48Moulds
    • B29C49/4802Moulds with means for locally compressing part(s) of the parison in the main blowing cavity
    • B29C2049/4805Moulds with means for locally compressing part(s) of the parison in the main blowing cavity by closing the mould halves
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2791/00Shaping characteristics in general
    • B29C2791/004Shaping under special conditions
    • B29C2791/006Using vacuum
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2791/00Shaping characteristics in general
    • B29C2791/004Shaping under special conditions
    • B29C2791/007Using fluid under pressure
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
    • B29KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS
    • B29K2995/00Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037Other properties
    • B29K2995/0068Permeability to liquids, adsorption

Description

Ail g 1968 R. F. WESTCOTT 3,396,430

METHOD AND APPARATUS FOR FORMING DOUBLE WALLED CONTAINERS Filed May 15, 1967 14 39 42 34?FQ48Z22 52 18 I INVENTOR.

Ao be/'/ P. Wes/co/f HTTORNE Y United States Patent 3,396,430 METHOD AND APPARATUS FOR FORMING DOUBLE WALLED CONTAINERS Robert F. Westcott, Findlay, Ohio, assignor to The Dow Chemical Company, Midland, Mich., a corporation of Delaware Continuation-impart of application Ser. No. 306,249, Sept. 3, 1963. This application May 15, 1967, Ser. No. 638,241

5 Claims. (Cl. 18-19) ABSTRACT OF THE DISCLOSURE A method and apparatus for forming double walled containers, such as meat trays and the like, wherein a plug and a mating cavity die engage a pair of preheated plastic sheets, the plug and die engaging a sheet from the opposite direction and progressing toward one another, wherein vacuum and air pressure are employed to keep the sheets separate in the double walled area. Optionally included are ribs for forming reinforcing indentations in one of the walls when this may be desired.

This application is a continuation'in-part of copending application Ser. No. 306,249, filed Sept. 3, 1963 now abandoned.

Description of the invention This invention relates generally to forming of double articles and, more particularly, relates to apparatus for providing double walled trays formed from two sheets of a plastic material.

Accordingly, it is an object of the present invention to provide a novel apparatus for forming double walled contatiners from plastic materials.

Another object of the present invention is to provide a novel apparatus for forming a double bottom container from two sheets of plastic in a single operation.

Still another object of the present invention is to provide a novel apparatus palticularly adapted for forming double walled tray-type containers of plastic foam.

Briefly then, the present invention describes an apparatus for forming double walled containers wherein a plug and a mating cavity die engage a pair of preheated plastic sheets, the plug and die engaging a sheet from the opposite direction and progressing toward one another, wherein vacuum and air pressure are employed to keep the sheets separate in the double walled area. Optionally included are ribs for forming reinforcing indentations in one of the walls when this may be desired.

Yet additional objects and advantages of the present invention, and its numerous cognate benefits and features are even more apparent and manifest in and by the ensuring description and specification taken in conjunction with the accompanying drawing in which, wheresoever possible, like characters of reference designate corresponding material and parts throughout the several views thereof, in which:

FIGURE 1 is a cross-sectional view of apparatus used in forming a double bottom tray in its opened preforming position; and

FIGURE 2 is a view similar to FIGURE 1 only showing the apparatus in its closed forming position.

Apparatus includes a plug 12 and a mating cavity die 14, each preferably formed of aluminum or other suitable material. The plug and die are movable toward and away from one another, as illustrated in FIGS. 1 and 2, by way of frame member 16 and 18, respectively, driven by motors (not shown). A plurality of passageways 20 are formed through plug 12, and similar passage- 'ice ways 22 are formed through die 14, the latter being connected to a passage 24 leading to a vacuum chamber 26.

Located in the top of plug 12 is a block 28, preferably formed of an insulating material such as polytetrafluoroethylene or the like. Block 28 carries a needle 30 which extends beyond the bottom or base portion 33 of plug 12, this needle being hollow so as to provide an air passageway 32. Also contained within block 28 are heated coil terminals 34 connected with metallic tip 36 of needle 30 for providing the tip with sufiicient heat to provide an opening, i.e. by burning away, piercing, puncturing, etc., through one layer of a plastic sheet when engaged therewith. For example, two layers 40 and 42, clamped together (clamps not shown) at their outer ends 39 are shown in FIGURE 1 as being located between plug 12 and die 14, layer 40 being the upper layer which is to be pierced by needle 30. Preferably, layers 40 and 42 are spaced from one another, except at their outer ends 49, by tubing 41, which can be a polytetrafluoroethylene coated steel tubing. Small holes (not shown) can be spaced along tubes 30, through which air can be blown to keep the sheets separated when hot.

Die 14 is also illustrated as including projections 46 extending from its base portion 35 and which can be employed to form ribs in the bottom of a container formed by apparatus 10. This will provide integral reinforcement of layers 40 and 42 against one another when the container is placed in use. Pointed heads 48 can also be provided. These would extend beyond the bottom or base portion 33 of plug 12 a distance greater than the thickness of sheet 40 when it is desired to provide passages 37 whereby excess fluids contained in a formed container can fiow into the space or reservoir 39 between layers 40 and 42.

The process of the present invention comprises the preheating of two sheets of plastic film or foam, i.e. layers 40 and 42, preferably formed of a thermoplastic material such as polystyrene or polyethylene. The heated sheets are transferred to the apparatus 10 as illustrated in its open preforming position in FIGURE 1.

In its operation, plug 12 of apparatus 10 moves downward until it strikes upper sheet 40 and preferably traps this sheet tightly against the plugs surface by use of a vacuum drawn through passageways 20. The tip 36 of needle 30 provides a small hole in the layer 40 as the plug strikes the sheet.

Die 14 closes tightly against the plug 12 and draws bottom layer or sheet 42 down into its configuration by pulling of a vacuum through passageways 22 and 24, as illustrated in FIGURE 2. Preferably plug 12 and die 14 move together simultaneously with the opening by needle 30 being formed during this movement. The main reason it is desirable to move die 14, as well as plug 12, is to provide for later ease of ejection of the formed container upon withdrawal of die 14.

The bringing together of plug 12 and die 14 forms a welding of layers 40 and 42 about their adjacent side wall peripheries when the spacing is properly dimensioned so as to be, for example, only slightly less than that of the thickness of the two layers combined.

Air is introduced between layers 40 and 42, through the hole 32 of the needle, thus filling the cavity between the two layers of plastic sheet with a ballooning or billowing effect. This blowing air is preferably metered to a given volume approximating atomspheric pressure. If ribs 46 are employed, layer 42 will, of course, form thereabout. If the ribs 42 are of adequate height, then the top of layer 42 will be heat sealed to the bottom of layer 40 along lines or seams identified by reference character 52.

Thence the plug and die are opened and the formed container is ejected and sent to a trimming station. However, if desired, the container may be trimmed in the mold before the mold is opened by adaptations of appanatus 10 not here shown or considered essential to the present invention.

It is to be understood that the above process can be used for many types of containers. For example, its teaching would only have to be slightly modified to allow the forming of hollow side walls as well as bottom walls, if desired. Also, if the hole formed in layer 40 by needle 30 were to be sealed, excellent insulating properties between layers 40 and 42 could be obtained. Otherwise, additional holes can be provided in layer 40-, by heads 48, to provide a container with drain-off facilities.

While certain representative embodiments and details have been shown for the purpose of illustrating the invention, it will be apparent to those skilled in the'art that various changes and modifications can be made therein without departing from the spirit and scope of the invention.

. Accordingly, what is claimed as new is:

1. An apparatus for forming double Walled containers from a pair of thermoplastic sheets, said apparatus comprising a plug, a cavity die, means connected with said plug and die rendering at least one of them movable toward the other, said plug being matable with said die and when in a closed position defining a space between base portions of each the distance therebetween being greater than the combined thickness of said sheets and defining a space between at least peripheral portions of adjacent sides of said plug and die the distance therebetween being substantially no greater than the combined thickness 4 7 V I 1' of said sheets, a hollow needle having a tipproject in g below the base portion of said plug a distance greater than that of the thickness of the sheet to be engaged by said plug but less than that necessary to penetrate the other of said sheets, and a source for introducing fi-uid under pressure through said hollow needle.

2. The apparatus of claim 1 wherein said hollow needle is provided with means to heat it to a temperature sufficient to burn through said one of saidsheet s. V s

3. The apparatus of claim 2 wherein a vacuurni port means extends through each of said plug and die openings into said space. Y l

4. The apparatus of claim 3 wherein ribs are formed integral with said base portion and extend into said space. 5. The apparatus of claim .4 wherein said ribs extend above the top surface of said die a distance less than said first mentioned distance, and apluralitybf" projections extend from the bottom surface of said plug at least a distance greater than the thickness of at least one of said sheets. I References Cited UNITED STATES PATENTS 1,387,616 8/1921 Roberts. 2,810,160 10/ 1957 Bottleman. 3,242,245 3/1966 Greig et al. 3,250,660 5/ 1966 Greig et al. 3,308,213 3/1967 Carrigan et al.

WILLIAM J. STEPHENSON, Primary Examiner.

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Cited By (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3695806A (en) * 1970-06-24 1972-10-03 Reynolds Metals Co Apparatus for forming a peripheral bead in flange means of a preformed container
US3759479A (en) * 1971-03-24 1973-09-18 Robertson Co H H Mold apparatus for making foamed-in-place double-skin building panel
US3868917A (en) * 1969-08-29 1975-03-04 Reynolds Metals Co Sealed container and apparatus for and method of sealing same
US3982877A (en) * 1974-02-15 1976-09-28 E. I. Du Pont De Nemours And Company Apparatus for expanding sealing a laminated plastic preform
FR2482255A1 (en) * 1980-02-27 1981-11-13 Showa Denko Kk Seat frames or separation plates for vehicles CARRIED Synthetic Resin and method for making
DE3406399A1 (en) * 1984-02-22 1985-08-22 Hoechst Ag Shell-shaped packaging container with a bottom for receiving liquid
US4574088A (en) * 1984-02-17 1986-03-04 Bowden Arthur H Method for producing multiple food turnovers
US4592718A (en) * 1980-10-17 1986-06-03 Syoichi Teraoka Apparatus for molding hollow plastic articles
WO1986007558A1 (en) * 1985-06-18 1986-12-31 Baxter Travenol Laboratories, Inc. Cuvette belts and manufacture of same
FR2594421A1 (en) * 1986-02-14 1987-08-21 Locagraf Retention container
WO1988005757A1 (en) * 1987-01-28 1988-08-11 Gueret Jean Pierre Boat-shaped receptacle for packaging food products and method for fabricating such a receptacle
WO1994008871A1 (en) * 1992-10-14 1994-04-28 Hoescht Aktiengesellschaft Dish-shaped packaging container with a suction filter designed to absorb water
DE4313334A1 (en) * 1993-03-01 1994-09-08 Linpac Technologie Gmbh Dish for receiving foodstuffs and process for production of the same
US5389177A (en) * 1990-10-31 1995-02-14 Shuert; Lyle H. Thermoforming process for making a twin sheet plastic structure including captured metallic element
US5427732A (en) * 1993-12-28 1995-06-27 Shuert; Lyle H. Method of forming deep draw twin sheet plastic articles
WO1996001218A1 (en) * 1994-07-06 1996-01-18 Fra.Mo Snc Di Franca Riva & C Food packaging tray
US5655708A (en) * 1992-06-19 1997-08-12 Groene; Horst-Ditmar Food tray and process for manufacture
US5720915A (en) * 1994-12-23 1998-02-24 Depron B.V. Processes and apparatuses for perforating smooth, closed-cell surfaces of open-cell plastic foam sheets
US20030124221A1 (en) * 1997-03-13 2003-07-03 Garwood Anthony J.M. Method and apparatus for grinding, blending, and proportioning meat, and apparatus calibration
US20030152679A1 (en) * 1997-03-13 2003-08-14 Garwood Anthony J.M. Continuous production and packaging of perishable goods in low oxygen environments
US20030152675A1 (en) * 1997-03-13 2003-08-14 Garwood Anthony J.M. Tray with side recesses and channels for gas transfer
US20030165602A1 (en) * 1997-03-13 2003-09-04 Garwood Anthony J.M. Labeling, marking and pricing of meat products
US20030170359A1 (en) * 1997-03-13 2003-09-11 Garwood Anthony J. M. Method for controlling water content with decontamination in meats
US20030170358A1 (en) * 1997-03-13 2003-09-11 Garwood Anthony J.M. Tray with microperforations for gas transfer
US20030170745A1 (en) * 2002-03-08 2003-09-11 Pereira Heloise Anne Early detection marker for chronic inflammatory associated diseases
US20030170357A1 (en) * 1997-03-13 2003-09-11 Garwood Anthony J.M. Processing meat products responsive to customer orders
US20030185937A1 (en) * 1997-03-13 2003-10-02 Garwood Anthony J.M. Tracking meat goods to country of origin
US20030185947A1 (en) * 1997-03-13 2003-10-02 Garwood Anthony J.M. Apparatus for biaxially stretching a web of overwrapping material
US20030182903A1 (en) * 1997-03-13 2003-10-02 Garwood Anthony J.M. Continuous packaging in enclosed conduits
US20030215551A1 (en) * 1997-03-13 2003-11-20 Garwood Anthony J.M. Products, methods and apparatus for fresh meat processing and packaging
US20040037932A1 (en) * 1997-03-13 2004-02-26 Garwood Anthony J.M. Method and apparatus for sanitizing and processing perishable goods in enclosed conduits
US20040081729A1 (en) * 1997-03-13 2004-04-29 Garwood Anthony J.M. Continuous production and packaging of perishable goods in low oxygen environments
US6866832B2 (en) 1997-03-13 2005-03-15 Safefresh Technologies, Llc Method and apparatus for sanitizing perishable goods in enclosed conduits
US20060147588A1 (en) * 1997-03-13 2006-07-06 Case Ready Solutions Llc Products, methods and apparatus for fresh meat processing and packaging
US7205016B2 (en) 1997-03-13 2007-04-17 Safefresh Technologies, Llc Packages and methods for processing food products
US20090074922A1 (en) * 2002-04-16 2009-03-19 Safefresh Technologies, Llc Method and apparatus for sanitizing and processing perishable goods in enclosed conduits
US20140159357A1 (en) * 2012-12-12 2014-06-12 Kia Motors Corporation Molding apparatus and method for manufacturing crash pad
EP2708346A3 (en) * 2009-03-24 2014-09-10 Sarong Societa' Per Azioni Apparatus for thermoforming objects

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1387616A (en) * 1921-08-16 Apparatus for making pneumatic inner tubes
US2810160A (en) * 1953-10-20 1957-10-22 Great American Plastics Compan Molds for plastic blowing machines
US3242245A (en) * 1960-11-15 1966-03-22 Woodall Industries Inc Process and apparatus for forming hollow plastic structure
US3250660A (en) * 1961-12-12 1966-05-10 Woodall Industries Inc Die apparatus for forming hollow plastic structure
US3308213A (en) * 1963-05-27 1967-03-07 Kirkhof Mfg Corp Vacuum forming die and method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1387616A (en) * 1921-08-16 Apparatus for making pneumatic inner tubes
US2810160A (en) * 1953-10-20 1957-10-22 Great American Plastics Compan Molds for plastic blowing machines
US3242245A (en) * 1960-11-15 1966-03-22 Woodall Industries Inc Process and apparatus for forming hollow plastic structure
US3250660A (en) * 1961-12-12 1966-05-10 Woodall Industries Inc Die apparatus for forming hollow plastic structure
US3308213A (en) * 1963-05-27 1967-03-07 Kirkhof Mfg Corp Vacuum forming die and method

Cited By (49)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3868917A (en) * 1969-08-29 1975-03-04 Reynolds Metals Co Sealed container and apparatus for and method of sealing same
US3695806A (en) * 1970-06-24 1972-10-03 Reynolds Metals Co Apparatus for forming a peripheral bead in flange means of a preformed container
US3759479A (en) * 1971-03-24 1973-09-18 Robertson Co H H Mold apparatus for making foamed-in-place double-skin building panel
US3982877A (en) * 1974-02-15 1976-09-28 E. I. Du Pont De Nemours And Company Apparatus for expanding sealing a laminated plastic preform
FR2482255A1 (en) * 1980-02-27 1981-11-13 Showa Denko Kk Seat frames or separation plates for vehicles CARRIED Synthetic Resin and method for making
US4592718A (en) * 1980-10-17 1986-06-03 Syoichi Teraoka Apparatus for molding hollow plastic articles
US4574088A (en) * 1984-02-17 1986-03-04 Bowden Arthur H Method for producing multiple food turnovers
DE3406399A1 (en) * 1984-02-22 1985-08-22 Hoechst Ag Shell-shaped packaging container with a bottom for receiving liquid
WO1986007558A1 (en) * 1985-06-18 1986-12-31 Baxter Travenol Laboratories, Inc. Cuvette belts and manufacture of same
US4685880A (en) * 1985-06-18 1987-08-11 American Hospital Supply Corporation Cuvette belts and manufacture of same
FR2594421A1 (en) * 1986-02-14 1987-08-21 Locagraf Retention container
WO1988005757A1 (en) * 1987-01-28 1988-08-11 Gueret Jean Pierre Boat-shaped receptacle for packaging food products and method for fabricating such a receptacle
US5389177A (en) * 1990-10-31 1995-02-14 Shuert; Lyle H. Thermoforming process for making a twin sheet plastic structure including captured metallic element
US5655708A (en) * 1992-06-19 1997-08-12 Groene; Horst-Ditmar Food tray and process for manufacture
WO1994008871A1 (en) * 1992-10-14 1994-04-28 Hoescht Aktiengesellschaft Dish-shaped packaging container with a suction filter designed to absorb water
DE4234632B4 (en) * 1992-10-14 2004-09-30 Depron B.V. of the same tray-like packaging container, to processes for its preparation and use
DE4313334A1 (en) * 1993-03-01 1994-09-08 Linpac Technologie Gmbh Dish for receiving foodstuffs and process for production of the same
US5427732A (en) * 1993-12-28 1995-06-27 Shuert; Lyle H. Method of forming deep draw twin sheet plastic articles
WO1996001218A1 (en) * 1994-07-06 1996-01-18 Fra.Mo Snc Di Franca Riva & C Food packaging tray
US5816488A (en) * 1994-07-06 1998-10-06 Fra. Mo Snc Di Franca Riva & C Food packaging tray
US5720915A (en) * 1994-12-23 1998-02-24 Depron B.V. Processes and apparatuses for perforating smooth, closed-cell surfaces of open-cell plastic foam sheets
US6103163A (en) * 1994-12-23 2000-08-15 Depron B.V. Processes and apparatuses for perforating smooth, closed-cell surfaces of open-cell plastic foam sheets
US20030165602A1 (en) * 1997-03-13 2003-09-04 Garwood Anthony J.M. Labeling, marking and pricing of meat products
US20030152675A1 (en) * 1997-03-13 2003-08-14 Garwood Anthony J.M. Tray with side recesses and channels for gas transfer
US20030152679A1 (en) * 1997-03-13 2003-08-14 Garwood Anthony J.M. Continuous production and packaging of perishable goods in low oxygen environments
US20030170359A1 (en) * 1997-03-13 2003-09-11 Garwood Anthony J. M. Method for controlling water content with decontamination in meats
US20030170358A1 (en) * 1997-03-13 2003-09-11 Garwood Anthony J.M. Tray with microperforations for gas transfer
US8012521B2 (en) 1997-03-13 2011-09-06 Safefresh Technologies, Llc Method for controlling water content with decontamination in meats
US20030170357A1 (en) * 1997-03-13 2003-09-11 Garwood Anthony J.M. Processing meat products responsive to customer orders
US20030185937A1 (en) * 1997-03-13 2003-10-02 Garwood Anthony J.M. Tracking meat goods to country of origin
US20030185947A1 (en) * 1997-03-13 2003-10-02 Garwood Anthony J.M. Apparatus for biaxially stretching a web of overwrapping material
US20030182903A1 (en) * 1997-03-13 2003-10-02 Garwood Anthony J.M. Continuous packaging in enclosed conduits
US20030215551A1 (en) * 1997-03-13 2003-11-20 Garwood Anthony J.M. Products, methods and apparatus for fresh meat processing and packaging
US20040037932A1 (en) * 1997-03-13 2004-02-26 Garwood Anthony J.M. Method and apparatus for sanitizing and processing perishable goods in enclosed conduits
US20040081729A1 (en) * 1997-03-13 2004-04-29 Garwood Anthony J.M. Continuous production and packaging of perishable goods in low oxygen environments
US20040185152A1 (en) * 1997-03-13 2004-09-23 Safefresh Technologies, Llc Continuous production and packaging of perishable goods in low oxygen environments
US7575770B2 (en) 1997-03-13 2009-08-18 Safefresh Technologies, Llc Continuous production and packaging of perishable goods in low oxygen environments
US20030124221A1 (en) * 1997-03-13 2003-07-03 Garwood Anthony J.M. Method and apparatus for grinding, blending, and proportioning meat, and apparatus calibration
US6866832B2 (en) 1997-03-13 2005-03-15 Safefresh Technologies, Llc Method and apparatus for sanitizing perishable goods in enclosed conduits
US20060147588A1 (en) * 1997-03-13 2006-07-06 Case Ready Solutions Llc Products, methods and apparatus for fresh meat processing and packaging
US7093734B2 (en) 1997-03-13 2006-08-22 Safefresh Technologies, Llc Tray with side recesses and channels for gas transfer
US7205016B2 (en) 1997-03-13 2007-04-17 Safefresh Technologies, Llc Packages and methods for processing food products
US20070254074A1 (en) * 1997-03-13 2007-11-01 Safefresh Technologies, Llc Method for controlling water content with decontamination in meats
US7415428B2 (en) 1997-03-13 2008-08-19 Safefresh Technologies, Llc Processing meat products responsive to customer orders
US20040185155A1 (en) * 1997-03-13 2004-09-23 Safefresh Technologies, Llc Continuous production and packaging of perishable goods in low oxygen environments
US20030170745A1 (en) * 2002-03-08 2003-09-11 Pereira Heloise Anne Early detection marker for chronic inflammatory associated diseases
US20090074922A1 (en) * 2002-04-16 2009-03-19 Safefresh Technologies, Llc Method and apparatus for sanitizing and processing perishable goods in enclosed conduits
EP2708346A3 (en) * 2009-03-24 2014-09-10 Sarong Societa' Per Azioni Apparatus for thermoforming objects
US20140159357A1 (en) * 2012-12-12 2014-06-12 Kia Motors Corporation Molding apparatus and method for manufacturing crash pad

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