US3431705A - Packaging machines - Google Patents

Packaging machines Download PDF

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Publication number
US3431705A
US3431705A US531614A US3431705DA US3431705A US 3431705 A US3431705 A US 3431705A US 531614 A US531614 A US 531614A US 3431705D A US3431705D A US 3431705DA US 3431705 A US3431705 A US 3431705A
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US
United States
Prior art keywords
wall
walls
wall portion
slots
guide passage
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
US531614A
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English (en)
Inventor
Alfred Schmermund
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Individual
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Individual
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Publication date
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Publication of US3431705A publication Critical patent/US3431705A/en
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Classifications

    • 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
    • B29C65/22—Heated wire resistive ribbon, resistive band or resistive strip
    • B29C65/221—Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip
    • B29C65/224—Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip being a resistive ribbon, a resistive band or a resistive strip
    • 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
    • B29C65/22—Heated wire resistive ribbon, resistive band or resistive strip
    • B29C65/221—Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip
    • B29C65/225—Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip being a coating or being printed, e.g. being applied as a paint or forming a printed circuit
    • 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
    • B29C65/22—Heated wire resistive ribbon, resistive band or resistive strip
    • B29C65/228—Heated wire resistive ribbon, resistive band or resistive strip characterised by the means for electrically connecting the ends of said heated wire, resistive ribbon, resistive band or resistive strip
    • 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
    • B29C66/1122—Single lap to lap joints, i.e. overlap 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
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • 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
    • 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
    • B29C66/818—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 cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps
    • B29C66/8182—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 cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the thermal insulating constructional aspects
    • B29C66/81821—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 cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the thermal insulating constructional aspects of the welding jaws
    • 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
    • B29C66/818—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 cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps
    • B29C66/8187—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 cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the electrical insulating constructional aspects
    • B29C66/81871—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 cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the electrical insulating constructional aspects of the welding jaws
    • 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
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
    • H05B3/16—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor the conductor being mounted on an insulating base

Definitions

  • a packaging machine which comprises a guide passage for packets wrapped in wrapping material.
  • the guide passage is formed by walls, at least a portion of at least one of the walls being of electrically conductive material for heating said wall portions electrically, so that the wrapping material, during movement of a packet through the guide passage, is contacted and heated by the wall portion.
  • the wall portion has slots or other perforations arranged to increase the electric resistance of the wall portion. Additional slots or perforations are provided at the marginal regions of the wall portion to suitably influence the current distribution in said marginal portions in order to obtain a substantially uniform heating effect.
  • the invention relates to packaging machines wherein superposed or overlapping portions of wrapping material are glued together.
  • the portions glued together are usually heated to accellerate drying of the glue.
  • the wrapping material is thermoplastics material superposed or overlying portions thereof may be heated for heat-welding the portions together.
  • a packaging machine which comprises a guide passage having a wall or wall portion of electrically conductive material, means being provided for feeding an electric current through said wall or wall portion for heating the same, further means being provided for feeding wrapping material in the form of a web, or in the form of wrappings on a series of articles, through the guide passage in such a manner that the wrapping material, during its movement, is contacted by said wall or wall portions so as to be heated thereby.
  • the present invention consists in a packaging machine of the kind referred to above, wherein a wall or wall portion of a guide passage is made of electrically conducting material and has slots or perforations arranged so as to increase the electric resistance of said wall or wall portion.
  • FIG. 1 illustrates a perspective view of a first embodiment of the invention, partly broken away;
  • FIG. 2 illustrates a view of a wall of the embodiment of FIG. 1;
  • FIG. 3 illustrates an end view on the wall of FIG. 2 and also shows adjacent parts
  • FIG. 4 illustrates a side view of the wall and adjacent parts of FIGS. 2 and 3;
  • FIG. 5 somewhat diagrammatically illustrates parts of a cigarette packaging machine
  • FIGS. 6 and 7 lilustrate a modified wall in front and side view respectively;
  • FIGS. 8 and 9 illustrate another modified wall in front and side view respectively
  • FIGS. 10 and 11 illustrate yet another modified wall in front and side view respectively
  • FIGS. 12 to 17 illustrate a further modification of a wall
  • FIG. 18 illustrates yet a further modification of a wall in front view.
  • FIG. 1 comprises four rectangular walls 1, 2, 3 and 4 forming a guide passage generally indicated by reference numeral 5 for feeding packets of articles wrapped in wrapping material therethrough.
  • Each of the walls 2, 3 and 4 comprises a sheet of metal backed by a heat-resistant supporting carrier 6, an electrically insulating layer 7 being inter-posed between the carrier 6 and the respective walls 2, 3 or 4.
  • Each carrier 6 and insulating layer 7 are connected to the respective walls 2, 3 or 4 by rivets 8, only some of the rivets 8 being fully shown, each rivet 8 being electrically insulated by a sleeve 9 of insulating material.
  • the carriers 6 and the wall 1 may be made of metal or of electrically insulating material.
  • the walls 2 and 3, are electrically connected by metal strips 11 and the walls 3 and 4 are electrically connected by metal strips 12.
  • the metal strips 11 and 12 are screwed to lugs 13 of the walls 2, 3 and 4.
  • Similar lugs 14 serve as terminals for connecting the walls 2 and 4 to an electric low-voltage supply source by means of conductors 15.
  • the walls 2, 3 and 4 each have slots 16 open at an edge 17 of each wall (see also FIGS. 2, 3 and 4). and extending to the vicinity of the opposite edge 18. Between adjacent slots 16, further slots 19 are provided, which are open at said opposite edge 18 and extend to the vicinity of the edge 17. Perforations 21 are provided at the marginal portions adjacent the edges 17 and 18.
  • the cigarette packaging machine of FIG. 5 comprises the guide passage 5.
  • a first reciprocatable member 22 pushes cigarette packets 23 through the guide passage 5, one wall of which is mounted on levers 24 for pressing said wall against packets 23.
  • a second member 25 pushes cigarette packets 23 emerging from the guide passage 5 laterally away from the guide passage 5.
  • the additional slots 21 serve to influence the distribution of the current in the marginal portions of the walls and thereby to obtain a substantially uniform heating effect.
  • the slots 16 and 19 may be replaced by slots 116 and 119 shown in FIG. 6, which slots are inclined relative to the edges 17 and 18, FIG. 7 being a corresponding side view, partly broken away.
  • the slots 116 and 119 packets moving in the direction from the edge 18 to the edge 17 cross the slots 116 and 119.
  • areas of the packet surfaces are avoided which permanently overlie the slots.
  • FIGS. 8 and 9 illustrates a wall, the carrier 206 of which has a groove 226 which is generally of zig-zag shape and into which a continuous strip 227 of conductive material is inserted.
  • a continuous strip 227 of conductive material is inserted.
  • parallel branches of the strip 227 which is in zig-zag shape, form a wall of conductive material having slots 216 and 219 corresponding to the slots 16 and 19 of FIGS. 1 and 2.
  • the strip 227 is cemented to the bottom of the groove 226.
  • the carrier 306 is coated, for example galvanically, with a metalliccoating 327 which may be of chromium. Slots 3 16 and 31-9 are provided in the coating 327, for example by etching.
  • the coating 327 may be kept thin so that the resistance of the coating is comparatively high.
  • the metalliccoating 327 when thin has a small heat-inertia, so that when current is applied the coating 327 is quickly heated and when the current is interrupted the coating 327 quickly cools down.
  • a strip 427 is provided which has parallel runs connected at the ends of the runs by suitably bending the strip 427 as can best be seen from FIG. 17 at 430. Slot-like gaps 431 are formed between adjacent runs of the strip 427.
  • FIG. 18 shows a wall 502 having perforations in the shape of holes 532.
  • the wall 502 may comprise a sheet of metal, or it may comprise a coating which may be deposited, for example, galvanically.
  • the holes 532 are aligned in an inclined direction relative to the edges of the wall 502.
  • the metallic wall to be heated may be made of a metal or a metal alloy of high specific resistance.
  • a portion of a wall surface may be used as a heating surface and provided with slots or gaps.
  • a packaging machine which includes a plurality of walls arranged to define a guide passage, means for feeding an electric current through at least a portion of at least one of the walls to directly heat the wall portion, means for feeding wrapping material through said guide passage with said wrapping material contacting the heated wall portion to heat the wrapping material, the combination of gaps in said wall portion, said gaps being arranged to increase the electric resistance of said wall portion, and additional perforations at marginal parts of said wall portion for further increasing the electric resistance of said marginal parts.
  • a packaging machine which includes a plurality of walls arranged .to define a guide passage, means for feeding an electric current through at least a portion of at least one of the walls to directly heat the wall portion, means for feeding wrapping material through said guide passage with said wrapping material contacting the heated wall portion to heat the wrapping material, the feature that said wall portions comprises a carrier, and a continuous strip of conductive material on said carrier, said strip having a plurality of substantially parallel runs, adiacent runs being distanced from one another and connected by bent strip portions, said gaps beingformed between adjacent runs of said strip.
  • a packaging machine which includes a plurality of walls arranged to define a guide passage, means for feeding an electric current through at least a portion of at least one of the walls to directly heat the wall portion, means for feeding wrapping material through said guide passage with said wrapping material contacting the heated wall portion to heat the wrapping material, the feature that said Wall portion comprises a sheet of metal having holes forming said gaps.
  • a packaging machine which includes a plurality of walls arranged to define a guide passage, means for feeding an electric current through at least a portion of at least one of the walls to directly heat the wall portion, means for feeding wrapping material through said guide passage with said wrapping material contacting the heated wall portion to heat the wrapping material, the feature that said wall portion comprises a carrier, and a metal coating on said carrier, said coating having holes forming said gaps.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Resistance Heating (AREA)
  • Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
  • Laminated Bodies (AREA)
  • Wrapping Of Specific Fragile Articles (AREA)
US531614A 1965-03-13 1966-03-03 Packaging machines Expired - Lifetime US3431705A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB10746/65A GB1123824A (en) 1965-03-13 1965-03-13 Improvements in or relating to packaging machines

Publications (1)

Publication Number Publication Date
US3431705A true US3431705A (en) 1969-03-11

Family

ID=9973524

Family Applications (1)

Application Number Title Priority Date Filing Date
US531614A Expired - Lifetime US3431705A (en) 1965-03-13 1966-03-03 Packaging machines

Country Status (5)

Country Link
US (1) US3431705A (xx)
BE (1) BE677613A (xx)
CH (1) CH435094A (xx)
DE (1) DE1511780A1 (xx)
GB (1) GB1123824A (xx)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3525850A (en) * 1968-03-15 1970-08-25 Armstrong Cork Co High output,quick response,radiant heater
US4551614A (en) * 1984-07-13 1985-11-05 Johnson Joe P Electrical resistance heater unit
US4568908A (en) * 1984-12-24 1986-02-04 General Electric Company Compact resistor assembly
US6570140B2 (en) * 1999-06-23 2003-05-27 Telefonaktiebolaget Lm Ericsson (Publ) Device for heating shrinkable sleeves
US6657165B1 (en) * 2000-11-03 2003-12-02 R. A. Jones & Co. Inc. Sealing system for forming thermal seals and method of operation thereof
WO2004041643A2 (de) * 2002-11-06 2004-05-21 Cfs Germany Gmbh Widerstandsheizung

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1061039A (en) * 1912-12-26 1913-05-06 William A Mcpherson Device for sealing wrapped packages.
US1068907A (en) * 1910-12-10 1913-07-29 Westinghouse Electric & Mfg Co Resister.
US2480501A (en) * 1946-09-25 1949-08-30 Reynolds Metals Co Means for producing cigarette packages
US2487695A (en) * 1946-11-29 1949-11-08 North American Geophysical Com Electric heating element
US3266661A (en) * 1961-10-04 1966-08-16 Corning Glass Works Method of applying electro-conductive coatings and resulting article

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1068907A (en) * 1910-12-10 1913-07-29 Westinghouse Electric & Mfg Co Resister.
US1061039A (en) * 1912-12-26 1913-05-06 William A Mcpherson Device for sealing wrapped packages.
US2480501A (en) * 1946-09-25 1949-08-30 Reynolds Metals Co Means for producing cigarette packages
US2487695A (en) * 1946-11-29 1949-11-08 North American Geophysical Com Electric heating element
US3266661A (en) * 1961-10-04 1966-08-16 Corning Glass Works Method of applying electro-conductive coatings and resulting article

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3525850A (en) * 1968-03-15 1970-08-25 Armstrong Cork Co High output,quick response,radiant heater
US4551614A (en) * 1984-07-13 1985-11-05 Johnson Joe P Electrical resistance heater unit
US4568908A (en) * 1984-12-24 1986-02-04 General Electric Company Compact resistor assembly
US6570140B2 (en) * 1999-06-23 2003-05-27 Telefonaktiebolaget Lm Ericsson (Publ) Device for heating shrinkable sleeves
US6657165B1 (en) * 2000-11-03 2003-12-02 R. A. Jones & Co. Inc. Sealing system for forming thermal seals and method of operation thereof
WO2004041643A2 (de) * 2002-11-06 2004-05-21 Cfs Germany Gmbh Widerstandsheizung
WO2004041643A3 (de) * 2002-11-06 2004-07-08 Cfs Germany Gmbh Widerstandsheizung

Also Published As

Publication number Publication date
CH435094A (de) 1967-04-30
GB1123824A (en) 1968-08-14
DE1511780A1 (de) 1969-07-17
BE677613A (xx) 1966-08-01

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