US3867768A - Seal - Google Patents

Seal Download PDF

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Publication number
US3867768A
US3867768A US437879A US43787974A US3867768A US 3867768 A US3867768 A US 3867768A US 437879 A US437879 A US 437879A US 43787974 A US43787974 A US 43787974A US 3867768 A US3867768 A US 3867768A
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US
United States
Prior art keywords
gap
fingers
bearing member
sealing means
web material
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
US437879A
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English (en)
Inventor
Guillaume Ward Jamin
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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.)
Filing date
Publication date
Application filed by Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Application granted granted Critical
Publication of US3867768A publication Critical patent/US3867768A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/168—Sealings between relatively-moving surfaces which permits material to be continuously conveyed
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B23/00—Component parts, details, or accessories of apparatus or machines, specially adapted for the treating of textile materials, not restricted to a particular kind of apparatus, provided for in groups D06B1/00 - D06B21/00
    • D06B23/14—Containers, e.g. vats
    • D06B23/18—Sealing arrangements

Definitions

  • ABSTRACT A sealing means for permitting continuous passage of a web material through a gap in a wall separating two zones at different pressures whilst minimising the flow of air from one zone to the other, comprising, built into the gap, two bearing members between which the web material passes, the first bearing member comprising a series of parallel, closely abutting, fingers which extend the full length of the gap, said fingers being pivoted on an axle which is parallel to a longitudinal edge of the gap, and each of the fingers being pressure loaded towards the second bearing member so as to maintain firm contact with either the web material or with the second bearing member, seals being provided between the fingers and the adjacent edges of the gap and also between the second bearing member and the adjacent edges of the gap, and the use of such sealing means in apparatus primarily intended for the continuous vacuum transfer printing of synthetic textile materials.
  • the chamber is preferably evacuated to a vacuum of at least inches (635 mms.) of mercury,'and, preferably to a vacuum in the region of 27 to 30 inches (685 to 760 mms.) of mercury.
  • a press is used in which the enclosed chamber comprises the space between two platens which is bounded by a sealing strip, the said space being connected to a suitable source of vacuum, and in this type of apparatus there is no difficulty in readily. achieving the required amount of vacuum.
  • the present invention is directed to improved sealing systems which whilst freely allowing the passage of the textile material and/or the transfer paper through the seal minimise the flow of air through the seal.
  • a sealing means for permitting continuous passage of a web material through a gap in a wall separating two zones at different pressures whilst minimising the flow of air from one zone to the other, comprising, built into the gap, two bearing members between which the web material passes, the first bearing member comprising a series of parallel, closely abutting, fingers which extend the full length of the gap, said fingers being pivoted on an axle which is parallel to a longitudinal edge of the gap, and each of the fingers being pressure loaded towards the second bearing member so as to maintain firm contact with either the web material or with the second bearing member, seals being provided between the fingers and the adjacent edges of the gap and also between the second bearing member and the adjacent ler rotatable about a longitudinal axle which is preferably parallel to the lowest edge of the gap, a series of parallel, closely abutting, fingers which are pivoted on an axle which is parallel to the lowest edge of the gap, or a fixed bearing member the surface of which comes into contact with the web materialor with the series of fingers and which is covered
  • This second bearing member preferably forms the lower bearing member of the seal and is situated adjacent to the lowest edge of the gap so that the portion of the surface of this bearing member which comes into contact with the web material or the series of fingers is in a horizontal plane parallel to the said lowest edge. Seals are provided between this second bearing member and the adjacent edges of the gap.
  • this second bearing member is moveable in anyway, as for example a cylindrical roller which rotates, then the seal between such a bearing member and the lowest edge of the gap is a flexible seal which is attached to the lowest edge of the gap and is maintained in uniform contact with this bearing member by springs or other pressure means.
  • the fingers which form the first bearing member are pivoted on an axle which is parallel to the longitudinal edges of the gap and are so positioned that their lower edges can bear on the upper surface of the second bear ing member.
  • the bearing area of the fingers is increased by having the relevant part of the lower edges of the fingers in the form of a curved section the radius of which corresponds to that of the upper surface of the second bearing member.
  • the fingers are maintained in firm contact with the second bearing member by a pressure loading device attached to each finger. Seals are also provided between the end fingers in the row and the end walls of the gap and also between the leading and top edges of the fingers and the upper edge of the gap.
  • the second bearing member comprises a series of fingers then these can be similar in construction and mounting to the series of fingers comprising the first bearing member, except that they are pressure loaded in the opposite direction so that they exert a pressure against the series of fingers comprising the first bearing member.
  • the pressure on each finger is released thus permitting the lead-- ing edges of a continuous length of textile material and of the transfer material to be passed between the second bearing member and the fingers. Pressure is then applied to each finger so that it is brought into firm contact with the materials, or, if the materials are narrower than the second bearing member, then one or more of the fingers at each end of the second bearing member will then be brought directly into contact with the second bearing member. The leading edges of the materials are then drawn through the remainder of the apparatus into which the sealing means has been incorporated and connected to rewind stands. The pressure on one side of the sealing means is reduced,.for example by use-of a vacuum pump, and the materials are then continuouslydrawn through the sealing means. Howeven due to thefirm pressure of the fingers, little ai riis' drawn through the sealing means.
  • FIGS. I and II of the accompanying drawing swhi ch respectively represent a cross section .of the sealing means, and a front view of the seal.
  • FIGS. I and II 1 represents the top edge of the gap in an apparatus, 2 the bottom edge, and 3 and 4 the side edges of the gap.
  • the bottom edge 2 is preferably curved as shown so that it conforms with the radius of the cylindrical roller 5 mounted on a horizontal axle 6.
  • Atttached to the bottom edge 2 is a flexible sealing strip 7 which runs the full length of the gap and which is pressure or spring loaded so that it is maintained in firm contact with the surface of the cylindrical roller 5.
  • Each finger 8 is mounted on a common axle 9 which is parallel to the axle 6, the bottom edge of each finger being able to bear directly on the lateral face of the cylindrical roller 5.
  • each finger Set into the bottom and front edge of each finger is a flexible sealing strip 10 which runs the full length of the gap and which is attached to the top edge of the gap'1.'(For the sake of clarity the sealing strips 7 and 10 are not shown on FIG. II).
  • Set into the top edge 1 are a series of cylinders 11 each of which bears'against a finger 8, 'said cylinders being provided with pressure means for exerting an independent downwards force on each of the fingers. 4
  • each apparatus Preferably two such sealing means are used in each apparatus, one of the-sealing means being used as an entrance to the apparatus and the other as an exit, and the interior'ofthe-apparatus being maintained at a pressure'less than atmospheric pressure whilst the exterior of the apparatus is maintained at atmospheric'pressure.
  • FIG. III of the accompanying drawings which represents a cross section of the sealing means.
  • the fingers 8 can if desired be of rectangular crosssection, but in order to minimise ingress of airthrough the sealing means they are preferably constructed so that they are interlocking, and one form of such interlocking is depicted in FIG. [V which represents a'view of suchfingers from'above.
  • FIG. IV. are shown a series of six fingers 8 pivotable about the axle 9. A portion of each of the two vertical longitudinal faces of each finger is shaped in a saw tooth pattern, 20 and 21., so that consecutive fingers interlock together although they are still able to independently pivot about the axle 9.
  • the sealing means is also fitted with a mechanism which facilitates simultaneous raising'of all the fingers 8 so as to permit feeding of the transfer paper and textile material between the cylindrical roller 5 and the fingers.
  • the fingers 8 can be constructedof a suitable metal, such as stainless steel, they are preferably obtained by injection moulding of a'suitablelthermoplastic material such as nylon.
  • the cylindrical roller 5 can be made'of metal, but preferably comprises a cylindrical metal core having an outer layer of a resilient material such'as rubber or polyurethane.
  • the various flexible sealing strips are preferably constructed of a silicone rubber or polyurethane.
  • the first bearing member comprising a large number of individual fingers as shown for example in FIG. II
  • a number of the fingers in the centre of this bearing member can be combined together, the remaining fingers at each end of the bearing member being separate as previously described.
  • the width of the combined fingers is less than the width of the web material.
  • the loading of the combined fingers is of course independent of the loading on the narrow fingers at each end of the combined fingers.
  • FIG. V of the accompanying drawings which represents a cross section of the sealing means.
  • the bottom edge 22of the gap terminates in a dome shaped structure 23 the shape of which corresponds to the curved depression 26 in the finger 8, the dome shaped structure 23 running the full length of the gap.
  • a cushion 24 of a compressible material such as rubber or a urethane.
  • each of the fingers 8 press the materials 12 and 13 against the cushion 24 on the dome shaped structure, or at the ends of the sealing means (i.e., outside the width of the materials 12 and 13) the fingers 8 bear directly onto the said cushion.
  • the materials 12 and 13 can usually be transported between the adjacent surfaces of the two bearing members without difficulty, it does occasionally happen that the said materials can be adversely affected due to the friction imposed upon them by passage between the two bearing surfaces under pressure.
  • the upper part of the sealing means is as described in FIG. I, and the lower part as in FIG. V.
  • Passing between the fingers 8 and the dome shaped structure 23 and running the full width of the gap are two continuous flexible belts 30 and 32 which are mounted on guide rollers, such as 31 and 33, and which are connected to a source of power (not shown) so that they move in the directions indicated by the arrows.
  • the source of power not shown
  • Such an arrangement involving the use of the flexible belts is in fact used in conjunction with two such sealing means (i.e., into and out of an apparatus, the pressure inside of which is greater or less than atmospheric), the two belts passing through the inlet sealing means and then leaving via the exit sealing means.
  • the materials 12 and 13 are thus transported through the apparatus between the said two belts.
  • the two belts form continuous separate loops inside and outside of such an apparatus.
  • sealing means has been particularly described with reference to its use in an apparatus for carrying out the vacuum transfer colour printing of textile materials
  • the sealing means can also be used in any other apparatus in which it is desired to transfer a textile material or in fact any material in the form of webs or films across a pressure differential boundary without a substantial flow of air or other gas through the sealing means.
  • a sealing means for permitting continuous pasage ofa web material through a gap in a wall separating two zones at different pressures whilst minimising the flow of air'from one zone to the other, comprising, built into the gap, two bearing members between which the web material passes, the first bearing member comprising a series of parallel, closely abutting, fingers which extend the full length of the gap, said fingers being pivoted on an axle which is parallel to a longitudinal edge of the gap, and each of the fingers being pressure loaded towards the second bearing member so as to maintain firm contact with either the web material or with the second bearing member, seals being provided between the fingers and the adjacent edges of the gap and also between the second bearing member and the adjacent edges of the gap,
  • a sealing means as claimed in claim 1 which additionally contains two continuous flexible belts which pass between the two bearing members.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Advancing Webs (AREA)
US437879A 1973-03-02 1974-01-30 Seal Expired - Lifetime US3867768A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1023573A GB1444096A (en) 1973-03-02 1973-03-02 Seal

Publications (1)

Publication Number Publication Date
US3867768A true US3867768A (en) 1975-02-25

Family

ID=9964115

Family Applications (1)

Application Number Title Priority Date Filing Date
US437879A Expired - Lifetime US3867768A (en) 1973-03-02 1974-01-30 Seal

Country Status (5)

Country Link
US (1) US3867768A (enrdf_load_stackoverflow)
JP (1) JPS57191B2 (enrdf_load_stackoverflow)
DE (1) DE2410214A1 (enrdf_load_stackoverflow)
FR (1) FR2220029B3 (enrdf_load_stackoverflow)
GB (1) GB1444096A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4427480A (en) 1980-08-19 1984-01-24 Tokyo Gas Co. Ltd. Method and apparatus for providing the inner surface of a pipe line with a tubular lining material
US5314539A (en) * 1990-05-10 1994-05-24 Eastman Kodak Company Apparatus for plasma treatment of continuous material

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4195499A (en) * 1978-03-22 1980-04-01 Yost John A Transfer printing apparatus
JPS5728008Y2 (enrdf_load_stackoverflow) * 1978-07-05 1982-06-18
JPS5519577A (en) * 1978-07-31 1980-02-12 Dainippon Printing Co Ltd Dry transfer dyeing system
DE3210437A1 (de) * 1982-03-22 1983-09-22 Heide 6369 Schoeneck Horcher Schlauchschelle
US5570595A (en) * 1992-11-02 1996-11-05 Alberto; Pietro Continuous decatizing of fabrics in autoclave

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2775825A (en) * 1954-02-01 1957-01-01 Surface Combustion Corp Apparatus for treating a strip of metal
US2929614A (en) * 1954-02-11 1960-03-22 Midland Ross Corp Roll seal for strip heater
US3098260A (en) * 1962-02-08 1963-07-23 Monsanto Chemicals Annealing apparatus
US3170576A (en) * 1962-08-24 1965-02-23 Pennsalt Chemicals Corp Rotary seal

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2775825A (en) * 1954-02-01 1957-01-01 Surface Combustion Corp Apparatus for treating a strip of metal
US2929614A (en) * 1954-02-11 1960-03-22 Midland Ross Corp Roll seal for strip heater
US3098260A (en) * 1962-02-08 1963-07-23 Monsanto Chemicals Annealing apparatus
US3170576A (en) * 1962-08-24 1965-02-23 Pennsalt Chemicals Corp Rotary seal

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4427480A (en) 1980-08-19 1984-01-24 Tokyo Gas Co. Ltd. Method and apparatus for providing the inner surface of a pipe line with a tubular lining material
US5314539A (en) * 1990-05-10 1994-05-24 Eastman Kodak Company Apparatus for plasma treatment of continuous material

Also Published As

Publication number Publication date
FR2220029A1 (enrdf_load_stackoverflow) 1974-09-27
DE2410214A1 (de) 1974-09-05
JPS57191B2 (enrdf_load_stackoverflow) 1982-01-05
JPS5069386A (enrdf_load_stackoverflow) 1975-06-10
GB1444096A (en) 1976-07-28
FR2220029B3 (enrdf_load_stackoverflow) 1976-12-10

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