US3542626A - Tower packing fabricating apparatus - Google Patents

Tower packing fabricating apparatus Download PDF

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Publication number
US3542626A
US3542626A US3542626DA US3542626A US 3542626 A US3542626 A US 3542626A US 3542626D A US3542626D A US 3542626DA US 3542626 A US3542626 A US 3542626A
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US
United States
Prior art keywords
bundle
sheets
adjacent
edges
frame
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
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English (en)
Inventor
Edward V Dettmer
Arthur L Leasher
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AMERICAN SURFPAC Corp A CORP OF PA
Dow Chemical Co
Original Assignee
Dow Chemical Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
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Publication of US3542626A publication Critical patent/US3542626A/en
Assigned to AMERICAN SURFPAC CORPORATION, A CORP. OF PA. reassignment AMERICAN SURFPAC CORPORATION, A CORP. OF PA. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: ENVIROTECH CORPORATION
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/32—Packing elements in the form of grids or built-up elements for forming a unit or module inside the apparatus for mass or heat transfer
    • 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
    • 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
    • B29C66/8181—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 cooling constructional aspects
    • 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
    • B29C66/83241—Joining or pressing tools pivoting around one axis cooperating pivoting tools
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S261/00—Gas and liquid contact apparatus
    • Y10S261/11—Cooling towers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/17—Surface bonding means and/or assemblymeans with work feeding or handling means
    • Y10T156/1702—For plural parts or plural areas of single part
    • Y10T156/1744—Means bringing discrete articles into assembled relationship
    • Y10T156/1751—At least three articles
    • Y10T156/1761—Stacked serially

Definitions

  • This invention relates to improved apparatus for the fabrication of tower packing, and more particularly relates to apparatus which is compact and can rapidly assemble synthetic resinous tower packing.
  • an apparatus for the fabrication of a plurality of tower packing bundles from a plurality of sheets having edges comprising in cooperative combination means to convey an unconnected plurality of synthetic resinous thermoplastic sheets in adjacent generally horizontal stacked configuration a predetermined distance, means to thereby form a bundle of unconnected sheets, the bundle having a first and second face and four sides, means to engage sides of ice the bundle and align the edges of the sheets forming the bundle, first and second opposed heating means, the heating means adapted to engage opposed sides of the bundles, heat the edges of the bundles to a thermoplastic state thereby fusing portions of adjacent edges of adjacent sheets together at selected locations and form a flange on the edge of the sheets, means to disengage the heating means from the bundle, means to cool the heated edge of the bundle, means to rotate the bundle about means to heat opposed edges of the bundle which are unsealed to a thermoplastic temperature and fuse adjacent edge portions of adjacent sheets together and form a flange, means to convey the so
  • FIG. 1 there is a schematic cutaway view of the apparatus in accordance with the present invention for providing fabricated packing bundles to a tower.
  • FIG. 2 is a detailed view of one of the two sealing units employed in the apparatus of FIG. 1.
  • FIG. 3 is a fractional detailed view of a portion of the sealing unit of FIG. 2.
  • FIG. 1 three is schematically depicted a cutaway view of the apparatus in accordance with the invention generally designated by the reference numeral 10.
  • the apparatus 10 comprises in cooperative combination a means 11 to receive a plurality of stacked generally rectangular corrugated sheets in horizontal relationship and convey the sheets to a desired location. Adjacent the receiving and conveying means 11 is disposed a first sealing unit generally designated by the reference numeral 12.
  • the first sealing unit 12 comprises a first heated platen 13 and a second heated platen 14 which are adapted to engage opposed edges of a bundle of plastic sheets not shown and flange the edges of the sheets and fuse adjacent sheet portions together.
  • a ventiltaor 16 is provided in cooperative combination with the first sealing unit 12 to draw noxious fumes therefrom.
  • a second sealing unit 17 is disposed generally adjacent the first sealing unit and remote from the means to receive the stacked sheets.
  • the second sealing unit 17 has opposed heated platens 18 and 19 adapted to engage the sides of the bundles which are not sealed by the sealing unit 12.
  • a ventilator or cooling means 20 is in cooperative combination with the second sealing unit 17.
  • a conveying means 11 passes within the sealing units 12 and 17 and delivers a sealed, finished packing bundle 21 to a bundle support 22.
  • a conveyor 24 adjacent the bundle support 22 conveys the finished bundles such as the bundle 21 into a tower 26.
  • the apparatus 10 is supported upon and within a moveable vehicle 27 adapted to travel upon the roadways.
  • a power and service control center 28 is positioned within the vehicle 27 and adopted to provide electrical and pneumatic power and control thereof to the various elements of the apparatus.
  • the vehicle 27 is provided with a doorway 30 which is adapted to be sealed by a door 31.
  • the door 31 is hinged at the bottom in such a manner that it swings outwardly to form a loading dock which rests on a support means 32.
  • a plurality of synthetic resinous sheets are provided at the dock or doorway 31.
  • the sheets are manually positioned in a desired configuration to the sheet receiving or conveying means 11.
  • the bundle is conveyed into the sealing unit 12 wherein the hot platens 13 and 14 seal the edges.
  • Conveying means subsequently carry the bundle to a location intermediate to the sealer 12 and the sealer 17 rotates the bundle about a vertical axis for about 90.
  • the conveyor means positions the bundle between the platens 18 and 19 of the sealer 17 and the remaining unsealed edges are sealed and flanged.
  • the conveyor 11 then passes the bundle such as the bundle 21 to the bundle support 22.
  • the conveyor 24 receives the bundle 21 from the support 22 conveying it to a location within the tower 26 where it is then manually positioned therein by a workman (not shown).
  • FIG. 2 there is schematically illustrated a partially cutaway view of a sealing unit such as the units 12 and 17 of FIG. 1.
  • the sealing uint is generally designated by the reference numeral 40.
  • the unit comprises in cooperative combination a fixed frame 41.
  • the frame 41 comprises a base portion 42, an upper portion 43 supported by spaced apart vertical elements 44, 45, 46 and 47.
  • the frame 41 has a first or entrance end 48 and a second or exit end 49.
  • the frame defines a generally centrally disposed passageway 51 extending from the first end 48 to the second end 49.
  • a conveyor means 53 is disposed partially within the passageway 51 and comprises a fixed support means 55 rigidly afiixed to the base 42 adjacent the first end 48 of the frame 41.
  • a conveying platform 56 is slidably supported upon the support 55 by means of rollers 58, 59 and two similar opposed rollers not shown.
  • a pneumatic cylinder 60 having a linear actuating means or piston rod 61 is afiixed to the frame 41.
  • the rod 61 is affixed to the conveying platform or support 56 at a location 63.
  • the cylinder 60 and rod 61 provide a means of positioning the platform 56 internal or external to the passageway 51.
  • Pivotally mounted shoes 68 and 69 are secured to the platform 56.
  • the shoes 68 and 69 have counter weights 71 and 72 which, under the influence of gravity, maintain bundle engaging shoe faces 74 and 75 in a generally vertical position and permit pivoting of the faces 74 and 75 toward the passageway 51 when a force is applied to the shoes remote from the faces 74 and 75, thus permitting a bundle of stacked sheets resting on the upper surface of the conveying means 56 to pass over the shoes.
  • a sheet stack engaging stop or shoe 78 is atfixed to the conveyor 56 remote from the frame 41 and is adapted to engage the edges of a plurality of sheets horizontally stacked on the adjacent surface of the conveyor toward the frame 41. Supported from the upper portion 43 of the frame 41 is a first heated platen 80.
  • the platen 80 is supported by a lever system generaly designated by the reference numeral 81, the majority of which is not shown.
  • the heated platen 80 has an operating or heating surface 82 which forms one side of the passageway 51.
  • a second heated platen 84 is oppositely disposed from the first heating platen and is pivotally supported from the upper portion of the frame by means of a pair of generally parallel pivoting arms 86 and 87.
  • the arms 86 and 87 have first ends 89 and 90, respectively, which are pivotally secured to the frame by means not shown.
  • the arms 86 and 87 have second ends 92 and 93 which are pivotally connected to a plate frame 95.
  • the platen frame 95 is rigidly secured to an operating arm 96.
  • the arm 96 has a first end 97 and a second end 98.
  • the first end 97 is rigidily secured to the frame 95 and the second end 98 is pivotally secured to a transversely extending operating rod 99.
  • the operating rod 99 has a first end 100.
  • the operating rod 99 has a second end 102 operatively connected to a first end 103 of a centrally pivoted lever 104.
  • the lever 104 is supported on a rotatable shaft 106.
  • a second end 107 of the lever 104 is operatively connected to a first end 102' of an operating rod 99' which actuates and positions the platen 80.
  • a crank 110 is aflixed to the shaft 106 and is in operative connection with a linear actuating rod 111 which is an integral portion of a linear actuator or fluid operated cylinder 112 which is pivotally aflixed to the frame 41 by a pivot assembly 113.
  • the linear actuator 112 operates in a direction generally normal to the shaft 106.
  • a stack squaring assembly generally designated by the reference numeral 118 is disposed within the passageway 51.
  • the stack squaring assembly comprises four vertically extending shafts 119, 120, 121 and 123.
  • Each of the shafts 119, 120, 121 and 123 have an axis of rotation generally normal to the plane of the conveyor and the shafts 119 and 123 are disposed adjacent the first end 42 of the frame while the shafts 120 and 121 are disposed adjacent the second end of the frame.
  • Each of the shafts 119, 120, 121 and 123 has affixed thereto a stack engaging member such as the stack engaging member 125 aflixed to the shaft 119 by the arms 126 and 127.
  • the shaft 123 has a stack engaging means affixed to the arms 128 and 129 in a manner similar to the stack engaging means 125 aflixed to the shaft 119.
  • the shafts 119, 120, 121 and 123 have in operative engagement therewith pulleys or sprockets 132, 133, 134 and 135, respectively.
  • a first idller pulley 136 is disposed adjacent the pulley 132 and a second idler pulley 137 is disposed adjacent the pulley 134.
  • a motion transmitting means such as a cable or chain passes from the periphery of the pulley 132 facing the center of the top portion 43 of the frame to the periphery of the pulley 133 remote from the center of the frame, about the idler pulley 137, about the periphery of the pulley 134 adjacent the center of the frame, about the periphery of the pulley 135 remote from the center of the frame, about the pulley 136 and returns to the pulley 132.
  • a linear actuator 141 is pivotally affixed to the frame 41 at the point 142.
  • the linear actuator is pivotally aflixed to a crank or arm 143 at a point 144.
  • the arm 143 remote from the point 144 is rigidly affixed to the shaft 121.
  • extension of the linear actuator causes motion of the shafts 119, 120, 121 and 123 withdrawing the stack engaging assembly from the space or passageway 51.
  • the stack engaging members such as the member 125 engage a stacked bundle of sheets and force them into a vertical alignment.
  • the platens 80 and 84 upon being positioned toward the central portion of the passageway 51 engage the remaining edges of the stacked bundle and force them into vertical alignment prior to heat fusion.
  • a curtain 149 is disposed over the face 82 of the platen 80.
  • the curtain 149 comprises a heat resistant synthetic resinous material having low adhesion properties.
  • a similar curtain is disposed over the face of the work engaging portion of the platen 84 not shown.
  • a curtain disengaging assembly 152 is disposed adjacent opposed ends of the frame 41.
  • the curtain disengaging assembly comprises in cooperation a first shaft 153 disposed adjacent the upper end 43 of the frame 41 and extending from the first end 48 to the second end 49.
  • a second shaft 154 is disposed in generally parallel relationship to the shaft 153.
  • the shafts 153 and 154 are disposed generally adjacent the upper portions of the platens 80 and 84.
  • the shaft 153 carries a pulley 155 disposed adjacent the first end of the frame and a second pulley 156 disposed adjacent the second end of the frame. In operative association with the pulley 155 is a pulley 158 disposed generally adjacent the member 42 of the frame.
  • An endless chain or cable 159 passes over the pulleys 155 and 158.
  • the chain 159 supports a bearing block 161.
  • a pulley 163 is disposed adjacent the second end of the frame, and in cooperative combination with the pulley 156, supports a cable or chain 164 and a bearing block 165 in the manner of the cable 159 of the block 161.
  • the shaft 153 supports a pulley 166 which is in operative engagement with a pulley 168 disposed on the shaft 154.
  • the shaft 154 carries a pair of pulleys 169 and 170 generally corresponding to the pulleys 155 and 156.
  • a pulley 172 is disposed adjacent the lower portion of the frame 41 and in cooperation with the pulley 170 supports an endless loop of chain or cable 173.
  • the loop 173 carries a bearing block 175.
  • a pulley 177 is disposed adjacent the second end of the frame and below the pulley 169.
  • the pulleys 169 and .177 support an endless chain or cable 179.
  • the cable 179 has aflixed thereto a bearing block 181.
  • Thebearing blocks 181 and 175 are adapted to move in unison upwardly and downwardly along the face of the platen 80.
  • the bearing blocks 161 and 165 move upwardly and downwardly along'the face of the platen 84.
  • a drive means 187 is provided to optionally locate the bearing bocks 161,165, 175 and 181.
  • a vertical compression means generally designated by the reference numeral 190 is positioned generally centrally within the frame 41 at the upper portion thereof.
  • the compression assembly comprises aframe 191.
  • the frame member 191 supports a linear actuator 192.
  • the linear actuator 192 has a movable rod or piston 193 which'terminates remote from the linear actuator 192 in a sheet engaging pad or holding means 196.
  • Shown adjacent the sealing unit 40 in a skeleton view is a second sealing unit 198 which is substantially a duplicate of thesealing'unit 40. Disposed between the s'ealingunit 40' and the sealing unit 198 is a rotarytab le 199.
  • the exposed surface of the table 199 is substantially coplanar, with a work surface 200 upon which a partially sealed'bundle'rests.
  • the bundle on being indexed over the'rotary table 199 is raised thereby and rotated 90".
  • Intermittent motion mechanism for accomplishing the raising and rotation of the turntable is omitted for the sake'of "clarityp
  • FIG. 3 there is illustrated a fractional detailed view of the sealing unit 40 depicting the arrangement of the curtain 149.
  • The-curtain 149. has ,an upper end 202 and a lower end 203.
  • the upper end 202 is resiliently secured to the frame 41 by a resilient curtain support 205 and the second end 203 secured totheframeby a resilient curtain support 206.
  • a first curtain'roll 208 is in engagement with the face of the curtain 149 remote from the platen '80 and a second curtain roll 210 is in closely spaced: adjacent relationship to the roll 208and "dispose"d adjacent the face 82 of the platen 80.
  • the axes of the first'andsecond roll lie in a plane generally parallel to the'p of the platen face 82.
  • the roll 210 has a bearing means 212 ,adaptedto 'be rotatably supported within the bearing block 175.
  • the opposite ends of the rolls 208 and 210 are similarly arranged to engage the bearing block 181.
  • a similar curtain and rolls are disposed adjacent the platen 84 and engage the bearing blocks 161 and 165.
  • a stack of corrugated sheets is placed on the conveyor means 53 adjacent the shoe 78.
  • the plane of the corrugated sheets is generally parallel to the upper surface of the conveyor means 53.
  • the conveyor means 53 carries the stack of sheets into the space between the sealingplatens 80 and 84.
  • the shafts 119, 120, 121 and 123 are rotated to bring the stack engaging members 125.
  • the sheets being formed into a rectangular bundle are then engaged by the sheet engaging pad or holding means 196 and pressed against the working surface of the conveyor means 53.
  • the platens 80 and 84 are brought into engagement with the edges of the stack of sheets for a sufiicient'length of time to raise the edges of the thermoplastic shjeets to a fiowable temperature wherein immediately adja' cent portions are sealed'to each other and the edges of the sheets are flanged by the plastic deformation thereof. After the fusion is complete, the platens are retracted by.
  • the stack engaging means 125 is withdrawn from contact with the sheet stack at any convenient time after the sheets have been aligned relative to one another and relative to the opposed faces of the platens 80 and 84. Beneficially, cooling air may be applied to the freshly sealed portions of the bundles in order to shorten the sealing cycle.
  • the bundle is engaged by the shoes 68 and 69, moved onto a rotary table 199 wherein it is rotated and passed into a second sealing unit such as the sealing unit 17 of FIG. 1.
  • the second sealing unit for practical purposes, may be identical to the sealing unit of FIGS. 2 and 3.
  • the stack engaging means and the associated positioning components may conveniently be omitted as the sealing of the first edges provides fixed alignment of the bundle.
  • Control and activation of the apparatus depicted in FIGS. 1, 2 and 3 may be accomplished in any desired manner from full manual operation to fully automatic operation.
  • it is found particularly convenient to provide automatic sequential operation with manual override which permits ready compensation by an operator for variation in thickness and nature of the corrugated sheets being formed into bundles and ambient temperature variations.
  • a wide variety of shaped sheets of synthetic resinous thermoplastic material may be formed into coherent tower packing bundles. Some of the sheet configurations are depicted in U.S. Pats. 3,260,511; 3,232,865; 2,986,379; 2,977,103 and 2,793,017.
  • FIG. 1 The embodiment of the invention depicted in FIG. 1
  • An apparatus for the fabrication of a plurality of tower packing bundles from a plurality of sheets having edges comprising in cooperative combination means to convey an unconnected plurality of synthetic resinous thermoplastic sheets in adjacent generally horizontal stacked configuration a predetermined distance,
  • the bundle having a first and second face and four sides
  • the heating means adapted to engage opposed sides of the bundles, heat the edges of the bundles to a thermoplastic state, thereby fusing portions of adjacent edges of adjacent sheets together at selected loactions, and form a flange on the edge of the sheets,
  • An apparatus for the fabrication of a plurality of tower packing bundles from a plurality of thermoplastic heat scalable sheets comprising in cooperative combination means to convey unconnected synthetic resinous thermoplastic sheets in adjacent generally parallel relationship a predetermined distance,
  • first and second heating means adapted to engage opposed sides of the bundle and to thereby heat the edges of the bundle to a thermoplastic state and fuse adjacent portions of adjacent sheets together at selected locations and to form a flange on the opposed edges of the sheets
  • the apparatus of claim 2 including a sealing enclosure operatively enclosing first and second sealing means.
  • the apparatus of claim 3 including a conveying means adapted to remove bundles from the enclosure.
  • the apparatus of claim 6 including means to strip said curtain from a sealed bundle.
  • An apparatus for the fabrication of a plurality of tower packing bundles from a plurality of thermoplastic heat sealable sheets comprising in cooperative combination,
  • heating means comprises a generally planar platen having a flexible non-adhering curtain disposed adjacent to the platens, the curtain adapted to engage the bundle side,
  • At least the first heating means adapted to engage one side of the bundle to thereby heat the edges of the bundle to a thermoplastic state and fuse portions of adjacent edges of adjacent sheets together at selected locations and to form a flange on the edges of the sheets,
  • the means to strip the curtain comprising at least a pair of adjacent rolls disposed on opposite sides of the curtain and adapted to traverse the length thereof,

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Gas Separation By Absorption (AREA)
US3542626D 1967-04-06 1967-04-06 Tower packing fabricating apparatus Expired - Lifetime US3542626A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US62895367A 1967-04-06 1967-04-06

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US3542626A true US3542626A (en) 1970-11-24

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US3542626D Expired - Lifetime US3542626A (en) 1967-04-06 1967-04-06 Tower packing fabricating apparatus

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US (1) US3542626A (forum.php)
JP (1) JPS5330751B1 (forum.php)
BE (1) BE713312A (forum.php)
DE (1) DE1778375A1 (forum.php)
FR (1) FR1576406A (forum.php)
GB (1) GB1222982A (forum.php)
NL (1) NL6804673A (forum.php)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI738985B (zh) 2017-03-15 2021-09-11 日商日本觸媒股份有限公司 廢水處理裝置及廢水處理方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2679194A (en) * 1952-03-10 1954-05-25 Goodyear Tire & Rubber Thermosealable package

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2679194A (en) * 1952-03-10 1954-05-25 Goodyear Tire & Rubber Thermosealable package

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BE713312A (forum.php) 1968-10-07
NL6804673A (forum.php) 1968-10-07
FR1576406A (forum.php) 1969-08-01
JPS5330751B1 (forum.php) 1978-08-29
DE1778375A1 (de) 1971-08-05
GB1222982A (en) 1971-02-17

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AS Assignment

Owner name: AMERICAN SURFPAC CORPORATION, 26 EAST MARKET ST.,

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:ENVIROTECH CORPORATION;REEL/FRAME:003926/0517

Effective date: 19811020