US3488472A - Device for sealing food containers and the like - Google Patents

Device for sealing food containers and the like Download PDF

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Publication number
US3488472A
US3488472A US3488472DA US3488472A US 3488472 A US3488472 A US 3488472A US 3488472D A US3488472D A US 3488472DA US 3488472 A US3488472 A US 3488472A
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United States
Prior art keywords
cover
annular
brim
shoulder
base
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English (en)
Inventor
Jorge H L M Pizarro
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Manacas Comercial e Agricola SA
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Manacas Comercial e Agricola SA
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/24—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools characterised by the means for heating the tool
    • B29C65/30—Electrical means
    • B29C65/305—Electrical means involving the use of cartridge heaters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/131—Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/24—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight
    • B29C66/242—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours
    • B29C66/2422—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours being circular, oval or elliptical
    • B29C66/24221—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours being circular, oval or elliptical being circular
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
    • B29C66/5346—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially flat
    • B29C66/53461—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially flat joining substantially flat covers and/or substantially flat bottoms to open ends of container bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
    • B29C66/7232—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer
    • B29C66/72321—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer consisting of metals or their alloys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/74—Joining plastics material to non-plastics material
    • B29C66/742—Joining plastics material to non-plastics material to metals or their alloys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81427—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single ridge, e.g. for making a weakening line; comprising a single tooth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/816—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the mounting of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8167—Quick change joining tools or surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/822—Transmission mechanisms
    • B29C66/8221—Scissor or lever mechanisms, i.e. involving a pivot point
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8324—Joining or pressing tools pivoting around one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/841—Machines or tools adaptable for making articles of different dimensions or shapes or for making joints of different dimensions
    • B29C66/8414—Machines or tools adaptable for making articles of different dimensions or shapes or for making joints of different dimensions of different diameter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • B65B51/14—Applying or generating heat or pressure or combinations thereof by reciprocating or oscillating members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • B65B51/14—Applying or generating heat or pressure or combinations thereof by reciprocating or oscillating members
    • B65B51/148—Hand-operated members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B7/00—Closing containers or receptacles after filling
    • B65B7/16—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons
    • B65B7/28—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons by applying separate preformed closures, e.g. lids, covers
    • B65B7/2842—Securing closures on containers
    • B65B7/2878—Securing closures on containers by heat-sealing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/74—Joining plastics material to non-plastics material
    • B29C66/742—Joining plastics material to non-plastics material to metals or their alloys
    • B29C66/7422—Aluminium or alloys of aluminium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
    • B29C66/91421—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature of the joining tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
    • B29C66/91431—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature the temperature being kept constant over time
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9161—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux
    • B29C66/91641—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux the heat or the thermal flux being non-constant over time
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages

Definitions

  • One or more frustoconical shells with similarly grooved upper peripheral edges may be nested in the recess to accommodate containers of different sizes, their grooved edges being preferably staggered vertically With reference to one another and to the shoulder of the base; the cover is then provided with correspondingly staggered additional annular ribs forming with the first-mentioned rib a concentric array.
  • My present invention relates to a device for the sealing of food containers or the like by means of a at, diskshaped lid having a heat-softenable (e.g. thermoplastic) adhesive applied to its underside.
  • a heat-softenable e.g. thermoplastic
  • a more particular object of the invention is to provide a device of this character capable of accommodating containers of diiierent sizes.
  • I provide a device which comprises a base and a removable cover, preferably hinged to the base, having co-operating formations for clamping the brim of a container and an overlying peripheral lid portion between them, in combination with heating means such as an electric resistance plate disposed within the cover.
  • the base is formed with an upwardly open recess of frustoconical shape for the quick insertion and removal of a correspondingly shaped container whose brim overlies an annular shoulder of the base surrounding the recess;
  • the cover has an annular formation which registers with that shoulder in a position of closure to exert pressure upon the container brim and an adhesively coated lid placed on top of it, this formation being advantageously a rib fitting into an annular groove of the brim-supporting shoulder to deform the brim and the lid periphery during the clamping process.
  • I may provide one or more frustoconical shells which can be received in nested relationship within the recess of the base and which are provided along their upper peripheral edges with similar annular shoulders co-operating with corresponding ribs on the cover.
  • FIG. 1 is a perspective view of my sealing device in its closed state
  • FIG. 2 is a cross-sectional view taken on the line II-II of FIG. 1;
  • FIG. 3 is a view similar to FIG. 2 in a partly open postion
  • FIG. 4 is an exploded elevational view, partly in section, of the device in its open state together with a container and lid to be bonded together.
  • the device shown in the drawing comprises a base 1 and a cover 2 hinged thereto at 3.
  • Base 1 is formed with a frustoconical recess 4 surrounded by a raised annular shoulder 11 provided with an annular groove 12.
  • An annular rib 7 on the underside of the cover 2 iits into groove 12, with just enough clearance to leave room for two layers of metal (eg. aluminum) foil or other container material to be heat-sealed to each other.
  • several frustoconical shells Sa, 5b can be nestedly disposed in recess 4 of base 1; each of these inserts has an upper peripheral edge with an annular groove 12m, 12b respectively cooperating with an annular rib 7a, 7b 0n cover 2.
  • the annular surfaces carrying grooves 12, 12a, 12b are located at progressively higher levels when the inserts 5a, 5b are in place, the concentric ribs 7, 7a, 7b being similarly staggered in elevation.
  • Hinge 3 lies approximately on the level of groove 12b to minimize interference between the top of shell 5b and the surrounding annular rib 7a during the opening and closing of the cover.
  • the projecting upper marginal zones of the outer frustoconical surfaces of shells 5a and 5b are cut olf cylindrically for the same purpose.
  • a handle 6 serves for manually swinging the cover 2 about the axis of its hinge 3 and bringing the ribs 7, 7a, 7b down under pressure upon the confronting grooved surfaces.
  • the innermost shell 5b is in place and has its top overlain by the brim 13 of a container 14, this brim in turn being covered by a diskshaped lid 15 of substantially the same dia-meter coated on its underside with a thermally fusible adhesive (e.g. a polyester), the lid and the brim are clamped between the rib 7b and the grooved upper surface of shell 5b and are deformed to the shape of groove 12b for a more positive sealing effect.
  • a thermally fusible adhesive e.g. a polyester
  • a resistance element 8 in a heating disk 9, disposed in a chamber 16 of cover 2, is energized via a flexible cable 17 terminating in a plug 1-8; the temperature developed by this heater is controlled by the thermostat 10 in chamber 16.
  • Cover 2 is made in two parts held together by a screw 19.
  • the container 14 may be of the type made from a flat metal foil so as to exhibit a corrugated frustoconical periphery and a wrinkled brim.
  • the brim proper may be covered by an intermediate smooth-surfaced ring adhesively bonded thereto, the adhesive (e.g. polyester) filling the wrinkles of the metal foil, before the lid 15 is applied; this improvement has been described and claimed in my copending application Ser. No. 636,- 321 of even date.
  • a device for the sealing of containers comprising a base provided with an upwardly open frustoconical recess surrounded by a planar shoulder defining the mouth of said recess, a cover removably overlying said base and provided with an annular formation registering with said shoulder in a closed position of said cover, heating means in said cover for thermally bonding an adhesive-coated lid onto a brim of a container lodged in said recess upon a clamping of said brim and said lid between said shoulder and said formation, at least one upwardly open frus toconical shell nestedly received in 4said recess for accommodating a similar container to be of smaller size, said shell having a peripheral planar edge disposed in a plane above the plane of said shoulder, said cover having a second annular formation concentrically disposed in the first annular formation to register with the peripheral edge of said shell, said shoulder and said edge being formed with respective coaxial annular grooves, said formations being ribs lying in planes one below the other and mating
  • heating means comprises a disk in said cover overlying the re'- gion of said concentric array.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Closures For Containers (AREA)
US3488472D 1966-12-29 1967-05-05 Device for sealing food containers and the like Expired - Lifetime US3488472A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR89346A FR1506920A (fr) 1966-12-29 1966-12-29 Appareil pour fermer les emballages commerciaux pour repas

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US3488472A true US3488472A (en) 1970-01-06

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FR (1) FR1506920A (is")

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3693318A (en) * 1970-08-26 1972-09-26 Winton E Balzer Tray covering and sealing apparatus
US3760563A (en) * 1971-12-13 1973-09-25 G Zimmermann Drawing apparatus for sealing containers
US4279113A (en) * 1979-11-16 1981-07-21 Immanuel Halm Coin guard for coin protection
US5123227A (en) * 1988-04-21 1992-06-23 Snow Brand Milk Products Co., Ltd. Positioning and press-sealing means
US5272854A (en) * 1992-12-04 1993-12-28 Ye E Fu Packaging mechanism
US20130263559A1 (en) * 2010-12-13 2013-10-10 Extru Sa Device for vacuum packaging, particularly of food products
US20160130046A1 (en) * 2014-11-12 2016-05-12 A-American Machine & Assembly Co. Manual Container Sealer and Methods
IT201700060407A1 (it) * 2017-06-01 2018-12-01 Machsolutions Sa Apparato per il confezionamento di contenitori
US10717902B2 (en) * 2012-02-14 2020-07-21 SteriPax, Inc. Control water based adhesive
WO2022029546A1 (en) * 2020-08-05 2022-02-10 G.D S.P.A. Coupling unit and coupling method for coupling a component to a container and apparatus for producing articles correlated thereto
WO2023065016A1 (en) * 2021-10-19 2023-04-27 Genpak, Division Of Great Pacific Enterprises Lp Lid applicator for pleated paper portion cups
IT202200016410A1 (it) * 2022-08-02 2024-02-02 Gd Spa Unità e metodo di accoppiamento di un componente ad un contenitore ed apparato di produzione di articoli ad essi correlati
IT202200016416A1 (it) * 2022-08-02 2024-02-02 Gd Spa Unità e metodo di accoppiamento di un componente ad un contenitore ed apparato di produzione di articoli ad essi correlati
EP3092181B1 (en) * 2014-01-08 2024-02-28 Weener Plastics Netherlands B.V. Closure assembly
US12325547B2 (en) * 2020-11-09 2025-06-10 Toppan Packaging Americas Holdings, Inc. Seal and cut assembly for heat sealing machine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4437574A1 (de) * 1994-10-20 1996-05-02 Alcan Gmbh Behälter, insbesondere Menüschale mit Siegelrand

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US291681A (en) * 1884-01-08 Apparatus for die-shaping
US893469A (en) * 1908-02-17 1908-07-14 Frieda Essmuller Cover.
US2896555A (en) * 1957-07-22 1959-07-28 Richard D Marcus Pie crust former
US3102182A (en) * 1960-04-08 1963-08-27 Hoechst Ag Heat-contact plastic welding device
US3309836A (en) * 1963-05-29 1967-03-21 R E Hartung Company Inc Method and apparatus for filling and heat-sealing plastic containers

Patent Citations (5)

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Publication number Priority date Publication date Assignee Title
US291681A (en) * 1884-01-08 Apparatus for die-shaping
US893469A (en) * 1908-02-17 1908-07-14 Frieda Essmuller Cover.
US2896555A (en) * 1957-07-22 1959-07-28 Richard D Marcus Pie crust former
US3102182A (en) * 1960-04-08 1963-08-27 Hoechst Ag Heat-contact plastic welding device
US3309836A (en) * 1963-05-29 1967-03-21 R E Hartung Company Inc Method and apparatus for filling and heat-sealing plastic containers

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3693318A (en) * 1970-08-26 1972-09-26 Winton E Balzer Tray covering and sealing apparatus
US3760563A (en) * 1971-12-13 1973-09-25 G Zimmermann Drawing apparatus for sealing containers
US4279113A (en) * 1979-11-16 1981-07-21 Immanuel Halm Coin guard for coin protection
US5123227A (en) * 1988-04-21 1992-06-23 Snow Brand Milk Products Co., Ltd. Positioning and press-sealing means
US5272854A (en) * 1992-12-04 1993-12-28 Ye E Fu Packaging mechanism
JP2014501208A (ja) * 2010-12-13 2014-01-20 ブル・パック・ディ・スコラロ・マウロ 特に食物製品用の真空パッケージング装置
US11180266B2 (en) * 2010-12-13 2021-11-23 Machsolutions Sa Device for vacuum packaging, particularly of food products
US9919819B2 (en) * 2010-12-13 2018-03-20 Extru Sa Device for vacuum packaging, particularly of food products
US20180155072A1 (en) * 2010-12-13 2018-06-07 Blu Pack Di Scolaro Mauro Device for vacuum packaging, particularly of food products
US20130263559A1 (en) * 2010-12-13 2013-10-10 Extru Sa Device for vacuum packaging, particularly of food products
US10717902B2 (en) * 2012-02-14 2020-07-21 SteriPax, Inc. Control water based adhesive
EP3092181B1 (en) * 2014-01-08 2024-02-28 Weener Plastics Netherlands B.V. Closure assembly
US20160130046A1 (en) * 2014-11-12 2016-05-12 A-American Machine & Assembly Co. Manual Container Sealer and Methods
US10196184B2 (en) * 2014-11-12 2019-02-05 A-American Machine & Assembly Co. Manual container sealer and methods
IT201700060407A1 (it) * 2017-06-01 2018-12-01 Machsolutions Sa Apparato per il confezionamento di contenitori
WO2018220574A1 (en) * 2017-06-01 2018-12-06 Machsolutions Sa Apparatus for manufacturing containers
WO2022029546A1 (en) * 2020-08-05 2022-02-10 G.D S.P.A. Coupling unit and coupling method for coupling a component to a container and apparatus for producing articles correlated thereto
EP4574689A1 (en) * 2020-08-05 2025-06-25 G.D S.p.A. Coupling unit and coupling method for coupling a component to a container and apparatus for producing articles correlated thereto
US12325547B2 (en) * 2020-11-09 2025-06-10 Toppan Packaging Americas Holdings, Inc. Seal and cut assembly for heat sealing machine
WO2023065016A1 (en) * 2021-10-19 2023-04-27 Genpak, Division Of Great Pacific Enterprises Lp Lid applicator for pleated paper portion cups
IT202200016410A1 (it) * 2022-08-02 2024-02-02 Gd Spa Unità e metodo di accoppiamento di un componente ad un contenitore ed apparato di produzione di articoli ad essi correlati
IT202200016416A1 (it) * 2022-08-02 2024-02-02 Gd Spa Unità e metodo di accoppiamento di un componente ad un contenitore ed apparato di produzione di articoli ad essi correlati

Also Published As

Publication number Publication date
BE693088A (is") 1967-07-03
FR1506920A (fr) 1967-12-22

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