US2252105A - Thermal sealing machine - Google Patents

Thermal sealing machine Download PDF

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US2252105A
US2252105A US346516A US34651640A US2252105A US 2252105 A US2252105 A US 2252105A US 346516 A US346516 A US 346516A US 34651640 A US34651640 A US 34651640A US 2252105 A US2252105 A US 2252105A
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sealing
units
bar
sheet
work
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US346516A
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Harry F Waters
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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
    • 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
    • B29C66/8412—Machines or tools adaptable for making articles of different dimensions or shapes or for making joints of different dimensions of different length, width or height
    • B29C66/84121—Machines or tools adaptable for making articles of different dimensions or shapes or for making joints of different dimensions of different length, width or height of different width
    • 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
    • B29C66/40—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
    • B29C66/431—Joining the articles to themselves
    • 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
    • B29C66/73921—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 characterised by the materials of both parts being thermoplastics
    • 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
    • B29C66/8161—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 said pressing elements being supported or backed-up by springs or by resilient material
    • 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
    • B29C66/8226—Cam mechanisms; Wedges; Eccentric mechanisms
    • 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
    • B29C66/843—Machines for making separate joints at the same time in different planes; Machines for making separate joints at the same time mounted in parallel or in series
    • B29C66/8432—Machines for making separate joints at the same time mounted in parallel or in series
    • 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
    • B29C66/851—Bag or container making machines
    • B29C66/8511—Bag making machines
    • 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
    • B29C66/91651—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 by controlling or regulating the heat generated by Joule heating or induction heating
    • 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
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/60—Uniting opposed surfaces or edges; Taping
    • B31B70/64—Uniting opposed surfaces or edges; Taping by applying heat or pressure

Definitions

  • b1ank B may extend laterally beyond the marginal portions F and G of the folded bag-forming bag A, in which circumstance the guide rails
  • 22 is eiected through the screws
  • the foot treadle 'I3 is pushedaway from the operator, swinging the arm I2 oi the bell-crank lever down, and carrying with it the equalizing bar V15,
  • the equalizing bar at its ends, pulls down the oppositely pivoted levers 80, 8
  • a. specially folded bag-forming sheet or such a sheet in a special assembly with a folded cartonforming sheet as illustrated in Fig. 6, is simultaneously seamed at its two marginal portions F and G, and a bag which is seamed at its two sides by the seams K and L, closed at its bottom by the fold C, and open at the top, is formed at one operation of the machine.
  • the invention may receive other embodiments than that herein specincally illustrated and described.
  • a heat sealing mechine the combination which comprises a pair of sealing units, each of said units including Va sealing bar and heating l v means and a backing member-for said bar, means for individually and independently displacing said units with the sealing bars in parallel spaced position with respect to each other to adjust the distance between the sealing bars of'said 1mits,.and means for simultaneously actuating said units to apply heat and pressure to twoparallel marginal strips of a sheet bearing fusible 5' material in one operation.
  • the combination ' which comprises a pair of sealing units: each of said units including a sealing bar, heating means for said bar, a backing member for said bar, and
  • the work-contacting faces 85 o f the Seal' v ing bars can adjust or accommodate themselves to the flat surface of the material, and thereby form a weld or joint of equal strength and se' curity the fun width .of the 'aforesaid workcontacting faces 85 of the sealing bars.
  • each Aoi? said units including a sealing bar.
  • each of said units including a heated sealing bar, abackingmemberadapstiddtowtgperatewithsaid sealingbarsof uni beingan'anged inparallel-spaced position, an actuating mechanism for said bar, drivingmeans for saidactuatins mechanism, anda said driving means and said actimting mechaindivlduallyand displacingsaid unitsto their respective clutch intermediate to independentlyv diustthespacebetweeni.
  • a thermal sealing machine comprising a pair oi sealing units, a common bed for said units, alined ways on said bed on which saidl sealing units are seated in opposite relationship,
  • said units may be movedA toward and from one another to vary the space Y between the units, each of said units comprising asealingbar,ameansforheatingthesame, and a platen or backing member, the sealing barandbackingmemberononeunitbeingarranged parallel to those on the other unit, and means i'or simultaneously actuating said sealing bars to press and heat marginal portions of a folded sheet between the sealing bars and the backing members, to form parallel seams at opposite sides of a sheet.
  • a thermal sealing machine comprising a pair of sealing umts. a common bed i'or said units,
  • each of said umts comprising a sealing bar.
  • said clutch operating ⁇ means comprising a pull-rod as a part oiy each clutch operating mechanism, a lever connected.
  • each sealing unit further comprises a work-support running parallel with the backing member, said work-support being mounted on its unit, and adjustable with its unit on said ways toward and from the corre-A spondirig work-support onthe opposite unit.
  • each sealing unit further comprises a work-support running parallel with the backing member, said work-support being.
  • each sealing unit further comprises a work-support running parallel with the backing member, said work-support being mounted on its unit, and adiustable with its unit on said ways toward and from the corresponding .work-support on the opposite unit, means for adjusting said work-support laterally with relation to the backing member of its unit,

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Package Closures (AREA)

Description

ISSheets-Sheet 1 H. F. WATERS THERMAL SEALING MACHINE Filed July 20,`I940 INVENTOR Y F.' WH TERS FITTORNEY HHRR "Aug,` 12, 1941. H. F. WATERS 'THERMAL SEALING MACHINE Filed `July 20, 1940 Sheets-Sheet 2 ATTORNEY Abars V2li, 2|, the work-support plates II3, ||4
'to be formed into a bag, for the sealing bars 26, 2| to contact with the marginal portions F, G, ai'.l which the seams are to be formed. If additional support is Arequired between the sealing are moved outwardly on the supporting bars Ill,
'|||, rst loosening and then tightening the bolts H8, H9. The under part of a folded carton...
b1ank Bmay extend laterally beyond the marginal portions F and G of the folded bag-forming bag A, in which circumstance the guide rails |2|, |22, are moved apart so that they will act on the side edges of the carton-blank with the marginal portions F andG of the bag-forming blank inl proper position to be seamed by the sealing bars 20, 2|. The adjustment lof the guide rails |2|, |22 is eiected through the screws |21, |28, Y'
and the slots |25, |26 in the guide rails.
. Withl the folded bag-forming sheet A, or with the assemblvof such a sheet witha folded earton-formng sheet B, in position on the worksupport, and with the v'ends of the sealing bars 2 l,
22, extending over the fold C of the folded bagforming sheet A, the foot treadle 'I3 is pushedaway from the operator, swinging the arm I2 oi the bell-crank lever down, and carrying with it the equalizing bar V15, The equalizing bar at its ends, pulls down the oppositely pivoted levers 80, 8|, and these pull on the pull-rods 66, 61, which are attached to the levers 6U, 6|, which levers carry the pins 63,64 which bear von the levers 53, 54 and move the latch-contacting portions 56, 51 thereof out of contact with said latches. This allows the latches 5|, 52, to engage the shafts 43, 44, and thereby clutch the cams 46, 41, to said shafts 43, 44, which are driven by the motors 30, 3|.k The cams 46, 41, acting on the arms 48, 49, of the rock-shafts 36, v39, turn the said rock- shafts 36, 39, and move the heads 33, 34 (carried by the arms 36, 31, attached to said rock-shafts) toward the folded bag-iorming sheetlyingl on Vthe work-support with its marginal portions extending over the backing members 23, 24. VThe heads 33, 34, to which they sealing bars 20, 2| are connected by a floating connection, press the-sealing bars against 'the marginal portions F and G of thebag-forming sheet A. The downward movement 'of the heads 33, 34 continues slightly beyond the point where the sealing bars make contact with the bagforming sheet, so as to additionally tension the 4resilient means comprising the compression springs 95, 96. 'I'he cams 46, 41 by reason of their contour, maintain the heads 33, 34, at their lowermost position through a certain interval of time. During this bag-forming sheet are .under the pressure of the treadle 13.
By the operation of the machine, as described, a. specially folded bag-forming sheet, or such a sheet in a special assembly with a folded cartonforming sheet as illustrated in Fig. 6, is simultaneously seamed at its two marginal portions F and G, and a bag which is seamed at its two sides by the seams K and L, closed at its bottom by the fold C, and open at the top, is formed at one operation of the machine.
The invention may receive other embodiments than that herein specincally illustrated and described.
'wnatiac1aimedis: g 1'. In a heat sealing mechine, the combination which comprises a pair of sealing units, each of said units including Va sealing bar and heating l v means and a backing member-for said bar, means for individually and independently displacing said units with the sealing bars in parallel spaced position with respect to each other to adjust the distance between the sealing bars of'said 1mits,.and means for simultaneously actuating said units to apply heat and pressure to twoparallel marginal strips of a sheet bearing fusible 5' material in one operation. 2. In a heat sealing machine. the combination 'which comprises a pair of sealing units: each of said units including a sealing bar, heating means for said bar, a backing member for said bar, and
. an actuating mechanism for said bar to move the bar from an inoperative into an operative and heat sealing position;
means for independently displacing said units to adjust the distance between their respective sealing bars, means for units;
fixing said units in such adjusted position; and means in common for both of said units for simultaneously initiating theoperation of both units. 3. In a. heat sealing machine', the combination which comprises a pair of displaceable sealing heating means and a backing member forA said bar, an actuating mechanism for said bar adapted time the margins ofthe Vsprings 96, 96, etc.- and are also subject to the heat of the sealing bar. While thus under pressure and heat, the thermoplastic, materialof which the bag-forming sheet is made, or lined, or striped at the place of seal, softens and welds to form the seam. By reason ofthe floating connection between the sealing bars 2U, 2i, and their heads, the work-contacting faces 85 o f the Seal' v ing bars can adjust or accommodate themselves to the flat surface of the material, and thereby form a weld or joint of equal strength and se' curity the fun width .of the 'aforesaid workcontacting faces 85 of the sealing bars.
When the arms 48, 49, respectively of the .a
rock- shafts 38, 39, to which the 'heads 33,' 34 are connected, rideloil' of the high part ofthe sealing cams, springs |30. |3| move or reciprocate th e 15 common for both imita bai-,the
Vnislmlneansfor when actuated to apply the sealing bar against. v
each Aoi? said units including a sealing bar.-
a sheet interposed between the bar and the back ing member, driving means for said'actuatlng mechanism, and means intermediate to said'drivingmeansandsaidactuatingmechanismto.
themv normally disconnected; and meansincommonforbothofsaiduniisoperable independentlyfrom therelative positions ofthe units to simultaneously connect the driving means o Veach unit to its corresponding actuating mechanism.`
4. In a heat sealing machine. the combination which comprises a pair of sealing units; each of said units including a heated sealing bar, abackingmemberadapstiddtowtgperatewithsaid sealingbarsof uni beingan'anged inparallel-spaced position, an actuating mechanism for said bar, drivingmeans for saidactuatins mechanism, anda said driving means and said actimting mechaindivlduallyand displacingsaid unitsto their respective clutch intermediate to independentlyv diustthespacebetweeni.
bars: and means in tocame ahnultanemis operation oi.' the clutch in each unit whereby said sealingbarswillbemoved'againstthe .corresponding backing members to form parallel seams upon a fusible sheet interposed between the bars and the backing members.
5. A thermal sealing machine comprisinga pair oi sealing units, a common bed for said units, alined ways on said bed on which saidl sealing units are seated in opposite relationship,
and on' whichV ways said units may be movedA toward and from one another to vary the space Y between the units, each of said units comprising asealingbar,ameansforheatingthesame, and a platen or backing member, the sealing barandbackingmemberononeunitbeingarranged parallel to those on the other unit, and means i'or simultaneously actuating said sealing bars to press and heat marginal portions of a folded sheet between the sealing bars and the backing members, to form parallel seams at opposite sides of a sheet.
6. A thermal sealing machine comprising a pair of sealing umts. a common bed i'or said units,
alined ways on said bed on which said sealing units are sealed in opposite relationship, and on which ways said lunits may be moved toward and from one another to vary the space between the units, each of said umts comprising a sealing bar.' a means for heating the same, a platen or backing member, means for reciprocating Vthe sealing bar, a motor for driving said reciprocating means and a clutch between said rmotor and said reciprocating means, the sealing bar and backing member oi one unit being arranged parallel to those on the other unit, and means Vfor simultaneously operating said clutches to connect said sealing bar reciprocatlngmeans to said motors, to ultaneously actuateV said sealing bars, to press d heat the marginal portions of a folded sheet between the sealing bars and the backing members to form parallel seams at opposite sidesof a sheet,.said clutch operating `means comprising a pull-rod as a part oiy each clutch operating mechanism, a lever connected. with each pull-rod, oppositely arranged fulcrums l, for .said levers, an equalizing bar bearing on eachV oi' said levers, a movable support having a pivotal connection to the middle portionoi said equalizing bar, and means for moving said. maw able part equalizing bar. levers and. pull-rods to simultaneously connect the motors thrdlish said clutches to each oi.' said sealing bar reciprocating means.
7. A thermal sealing machine according 'to claim 5, wherein each sealing unit further comprises a work-support running parallel with the backing member, said work-support being mounted on its unit, and adjustable with its unit on said ways toward and from the corre-A spondirig work-support onthe opposite unit.
8. A thermal sealing machine according to claim 5, wherein each sealing unit further comprises a work-support running parallel with the backing member, said work-support being.'
prises a work-support running parallel with thel t backing member, said work-support being mounted on its una, and adiumme with its unit on said ways toward and iromthe corre-l sponding work support on the opposite unit,
and a guide rail mounted on said work-support, j
parallel to said backing member.
10. A` thermal sealing machine according to claim 5. wherein each sealing unit further comprises a work-support running parallel with the backing member, said work-support being mounted on its unit, and adiustable with its unit on said ways toward and from the corresponding .work-support on the opposite unit, means for adjusting said work-support laterally with relation to the backing member of its unit,
e a guide rail mounted on said work-support parallel to said backing member, and means for adjusting said guide rail on said work-support laterally of said backing member.
f HARRY' 111. WATERS.-
US346516A 1940-07-20 1940-07-20 Thermal sealing machine Expired - Lifetime US2252105A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2477968A (en) * 1948-04-06 1949-08-02 Earl B Doolin Package sealing machine
US2571103A (en) * 1948-10-29 1951-10-16 Bemis Bro Bag Co Bag sealing machine
EP0245068A2 (en) 1986-05-08 1987-11-11 Matsushita Electric Industrial Co., Ltd. Gas flow controller
EP0812672A2 (en) * 1996-06-15 1997-12-17 BECK PACKAUTOMATEN GMBH & CO. Apparatus for sealing superposed sheets fed as webs
US9974063B2 (en) 2014-05-30 2018-05-15 Huawei Technologies Co., Ltd. Radio network control method and radio network controller
US10212021B2 (en) 2014-05-30 2019-02-19 Huawei Technologies Co., Ltd. Network protocol configuration method and apparatus

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2477968A (en) * 1948-04-06 1949-08-02 Earl B Doolin Package sealing machine
US2571103A (en) * 1948-10-29 1951-10-16 Bemis Bro Bag Co Bag sealing machine
EP0245068A2 (en) 1986-05-08 1987-11-11 Matsushita Electric Industrial Co., Ltd. Gas flow controller
EP0812672A2 (en) * 1996-06-15 1997-12-17 BECK PACKAUTOMATEN GMBH & CO. Apparatus for sealing superposed sheets fed as webs
EP0812672A3 (en) * 1996-06-15 1999-10-13 BECK PACKAUTOMATEN GMBH & CO. Apparatus for sealing superposed sheets fed as webs
US9974063B2 (en) 2014-05-30 2018-05-15 Huawei Technologies Co., Ltd. Radio network control method and radio network controller
US10212021B2 (en) 2014-05-30 2019-02-19 Huawei Technologies Co., Ltd. Network protocol configuration method and apparatus

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