US2972668A - Method and arrangement for uniformly heating a band-shaped material - Google Patents

Method and arrangement for uniformly heating a band-shaped material Download PDF

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Publication number
US2972668A
US2972668A US686059A US68605957A US2972668A US 2972668 A US2972668 A US 2972668A US 686059 A US686059 A US 686059A US 68605957 A US68605957 A US 68605957A US 2972668 A US2972668 A US 2972668A
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US
United States
Prior art keywords
band
roller
arrangement
shaped material
temperature
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
US686059A
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English (en)
Inventor
Westberg Johan Eric Haiden
Soderberg Leif Erik Roland
Bergstrom Axel Emil
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.)
Svenska AB Gasaccumulator
Original Assignee
Svenska AB Gasaccumulator
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 Svenska AB Gasaccumulator filed Critical Svenska AB Gasaccumulator
Application granted granted Critical
Publication of US2972668A publication Critical patent/US2972668A/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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/12—Dielectric heating
    • B29C35/14—Dielectric heating for articles of indefinite length
    • 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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/44—Compression means for making articles of indefinite length
    • B29C43/46—Rollers
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/52—Heating or cooling
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/44—Compression means for making articles of indefinite length
    • B29C43/46—Rollers
    • B29C2043/461—Rollers the rollers having specific surface features
    • B29C2043/462—Rollers the rollers having specific surface features smooth surface
    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means
    • B29C33/04—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means using liquids, gas or steam
    • B29C33/046—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means using liquids, gas or steam using gas
    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/20—Opening, closing or clamping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2021/00—Use of unspecified rubbers as moulding material

Definitions

  • the present invention comprises a method, the application of which is free from the said disadvantage.
  • the method of uniformly heating a band-shaped material according to the invention is characterized in that the material is wound onto a roller together with a band adapted to emit heat, one or more pressure rollers being pressed during at least part of the process with simultaneous rotation against the material wound on the roller.
  • the invention also refers to an arrangement for performing the method, the arrangement being characterized by a roller for winding up the material thereon and by one or more pressure rollers adapted to be pressed with simultaneous rotation against material wound on the roller.
  • the invention yields an essential advantage in that, owing to the roller action, the material is additionally stretched in heated condition, which causes lengthening of the most heavily loaded fibres thereof and an equalization of the fibre loading. This etfect can be enhanced through braking of the pressure rollers.
  • a material produced in this manner Will therefore be substantially stronger than if the production is performed in accordance with other, known methods. For instance, in a particular case, a value was obtained for the tensile strength of a neoprene-impregnated nylon fabric vulcanized according to the invention exceeding by 28% the value for the same fabric vulcanized according to a known method.
  • the invention further makes possible a simple solution of the problem of supplying current to the heating band during its movement.
  • the pressure rollers and the roller can serve to apply current to the band.
  • the pressure of the pressure rollers against the main roller yields satisfactory current passage when the .uninsulated ends make contact with the current-carrying rollers.
  • a further problem whose solution in a simple way is facilitated by the invention is the measurement of the temperature of the material Without using any temperatore-sensitive member producing dents in the material.
  • the temperature measurement suitably comprises measurement of the heating band temperature at the beginning of the process, when the band has a known temperature. Since the resistance increase of the band as a function of temperature is known, it is possible to ascertain by measurement of the resistance when temperature obtains and control the heat supply accordingly.
  • Figs. 1 and 2 An embodiment of the invention is described in the following in connection with Figs. 1 and 2, Fig. 1 showing an end view and Fig. 2 a side view of the arrangement with the band-shaped material rolled on.
  • 1 denotes the main roller on which the material 2 and the heating band 3 are wound.
  • pressure rollers 4 are pressed with the aid of pneumatic pressure cylinders 5 and levers 6.
  • the rollers are surrounded by an insulating cover 7, the air in which is held at the same temperature as the heating band by means of heat radiators 8 and fans 9.
  • Current is supplied to the rollers 1 and 4 by means of sliding contacts 10 and 11 and the resistance of the band is measured with a measuring instrument 12.
  • a driving device 13 for driving the main roller is adjustable with regard to speed and direction.
  • the pressure rollers can be braked by means of brake members 14 having controllable braking moment.
  • the material and the; resistive band are wound onto the roller 1 and the pressure rollers 4 are pressed against the roll thus formed.
  • the cover 7 is closed and current is supplied to the band 3 as well as the resistors 8.
  • the instrument 12 yields continual information about the temperature of the roller and the current through the resistor 8 is adjusted so as to make the air temperature Within the cover reach the same value.
  • the current supply to the band is interrupted and there is then supplied to the resistors 8 only as much current as is required for maintaining the air temperature within the casing.
  • the band-shaped material and the heating band are wound oil? with simultaneous cooling onto different rollers.
  • the pressure exerted by the pressure rollers during the operation should be different for different materials and can be varied by control of the pressure applied to the cylinders 5. If extraordinarily heavy stretching of the material is desired, the brakes 14 are tightened.
  • Apparatus for uniformly heating band-shaped material comprising a first roller mounted for rotation, a band adapted to emit heat and wound in inter-engage ment with said material in a plurality of turns on said first roller, at least one second roller mounted adjacent said first roller and in pressure engagement with said material, and means for producing heat in said band.
  • Apparatus for uniformly heating band-shaped material comprising a first roller mounted for rotation, a band adapted to emit heat and wound in inter-engagement with said material about said first roller, at least one second roller mounted adjacent said first roller and in pressure engagement with said material, and means for producing heat in said band, said band and at least one of said rollers being electrically conductive, said band engaging said conductive roller, and said producing means including means for conveying electric current to said conductive roller.
  • Apparatus according to claim 1 further comprising a casing in which said rollers are mounted, and means for heating said casing.
  • Apparatus according to claim 3 further comprising means for controlling the temperature attained in said band, whereby a cooperative relationship between said temperature and that in said casing can be attained.
  • a method of uniformly heating a band-shaped material comprising winding said material together with a band adapted to emit heat onto a first roller so as to form a roll thereon, pressure engaging said roll with at least one second roller, and producing heat in said band While rotating said first roller with said roll formed thereon.
  • a method according to claim 6 further comprising heating the air surrounding said material.
  • a method according to claim 8 further comprising controlling the temperature attained in said band commensurate with that of said air.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Thermal Sciences (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Surface Heating Bodies (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Laminated Bodies (AREA)
US686059A 1956-10-09 1957-09-25 Method and arrangement for uniformly heating a band-shaped material Expired - Lifetime US2972668A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE2972668X 1956-10-09

Publications (1)

Publication Number Publication Date
US2972668A true US2972668A (en) 1961-02-21

Family

ID=20428036

Family Applications (1)

Application Number Title Priority Date Filing Date
US686059A Expired - Lifetime US2972668A (en) 1956-10-09 1957-09-25 Method and arrangement for uniformly heating a band-shaped material

Country Status (5)

Country Link
US (1) US2972668A (da)
CH (1) CH356905A (da)
DK (1) DK97664C (da)
FR (1) FR1183692A (da)
GB (1) GB820602A (da)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3523356A (en) * 1968-07-22 1970-08-11 Hooker Chemical Corp Method for installing thermoplastic material
US4791275A (en) * 1986-04-07 1988-12-13 Imi-Tech Corporation High temperature compliant roll particularly adapted for xerography
CN107411178A (zh) * 2017-08-28 2017-12-01 云南中烟工业有限责任公司 一种低温卷烟的发烟装置及其制作方法

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1275785A (en) * 1915-11-09 1918-08-13 Electric Controller & Mfg Co Resistance unit.
US1401303A (en) * 1919-01-20 1921-12-27 Baldwin William Charles Electrical drier for paper and the like
US1941362A (en) * 1931-10-12 1933-12-26 Carborundum Co Apparatus for drying freshly frinted webs
US2226315A (en) * 1938-07-19 1940-12-24 Mailander Willy Rotary sheet metal offset printing press
US2525356A (en) * 1943-02-27 1950-10-10 Rca Corp Apparatus for bonding material electrically
US2556008A (en) * 1948-12-28 1951-06-05 William F Stahl Plastic-sealing apparatus
US2589777A (en) * 1949-07-09 1952-03-18 William F Stahl Plastic-sealing apparatus
US2629808A (en) * 1950-11-15 1953-02-24 Eastman Kodak Co Apparatus for sealing wrapping material
US2649530A (en) * 1950-09-06 1953-08-18 Edison Inc Thomas A Radiant heating system
US2763893A (en) * 1950-08-02 1956-09-25 Molins Machine Co Ltd Embossing gear for foil or other material

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1275785A (en) * 1915-11-09 1918-08-13 Electric Controller & Mfg Co Resistance unit.
US1401303A (en) * 1919-01-20 1921-12-27 Baldwin William Charles Electrical drier for paper and the like
US1941362A (en) * 1931-10-12 1933-12-26 Carborundum Co Apparatus for drying freshly frinted webs
US2226315A (en) * 1938-07-19 1940-12-24 Mailander Willy Rotary sheet metal offset printing press
US2525356A (en) * 1943-02-27 1950-10-10 Rca Corp Apparatus for bonding material electrically
US2556008A (en) * 1948-12-28 1951-06-05 William F Stahl Plastic-sealing apparatus
US2589777A (en) * 1949-07-09 1952-03-18 William F Stahl Plastic-sealing apparatus
US2763893A (en) * 1950-08-02 1956-09-25 Molins Machine Co Ltd Embossing gear for foil or other material
US2649530A (en) * 1950-09-06 1953-08-18 Edison Inc Thomas A Radiant heating system
US2629808A (en) * 1950-11-15 1953-02-24 Eastman Kodak Co Apparatus for sealing wrapping material

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3523356A (en) * 1968-07-22 1970-08-11 Hooker Chemical Corp Method for installing thermoplastic material
US4791275A (en) * 1986-04-07 1988-12-13 Imi-Tech Corporation High temperature compliant roll particularly adapted for xerography
CN107411178A (zh) * 2017-08-28 2017-12-01 云南中烟工业有限责任公司 一种低温卷烟的发烟装置及其制作方法
CN107411178B (zh) * 2017-08-28 2023-09-29 云南中烟工业有限责任公司 一种低温卷烟的发烟装置及其制作方法

Also Published As

Publication number Publication date
GB820602A (en) 1959-09-23
CH356905A (de) 1961-09-15
FR1183692A (fr) 1959-07-10
DK97664C (da) 1964-01-06

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