US2633602A - Rubber reclaiming apparatus - Google Patents

Rubber reclaiming apparatus Download PDF

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Publication number
US2633602A
US2633602A US12958649A US2633602A US 2633602 A US2633602 A US 2633602A US 12958649 A US12958649 A US 12958649A US 2633602 A US2633602 A US 2633602A
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Prior art keywords
channel
rubber
reclaiming apparatus
discharge channel
rubber reclaiming
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Expired - Lifetime
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Edward F Sverdrup
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U S Rubber Reclaiming Co Inc
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U S Rubber Reclaiming Co Inc
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Priority to US12958649 priority Critical patent/US2633602A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
    • B29C48/83—Heating or cooling the cylinders
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
    • B29C48/83—Heating or cooling the cylinders
    • B29C48/834—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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/86—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the nozzle zone
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/86—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the nozzle zone
    • B29C48/87—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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92704—Temperature
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92857—Extrusion unit
    • B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/92895—Barrel or housing
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92952—Drive section, e.g. gearbox, motor or drive fluids
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2022/00—Hollow articles
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/62—Plastics recycling; Rubber recycling

Definitions

  • This invention relates to apparatus for the reclaiming of rubber, and more particularly to apparatus for treating material in an elongated channel from which it is conducted through an annular discharge channel extending at an angle thereto.
  • this condition is remedied by so constructing the discharge channel that the channel is thinner at its near side than at its far side so that a greater proportion of material will be forced into the far side and so that there will be a greater frictional drag on the material at the near side to slow up the new of material.
  • Another advantage is that the material at the far side, which takes the longest course, will include a greater proportion of material which is so far from the channel walls that it will be affected more slowly by heat transfer or other control conditions, whereas substantially all of the faster-moving material in the near side will be in close contact with the channel walls.
  • Figure 1 is a vertical-sectional view of one form of apparatus embodying the invention
  • Figure 2 is an enlarged sectional view of an end-portion thereof.
  • Figure 3 is a cross-sectional view thereof along the line 33 of Figure 2.
  • a channel 10 which, in the present instance, is temperature controlled, as by fluid circulating in conduit-l I.
  • Material to be treated as vulcanized rubber undergoing reclaiming action, is forced through the channel as by a screw i2 adapted to exert a working and forcing action on the material which heats the material.
  • Controlled-temperature fluid in conduit II not only heats the material where it is not hot enough, but prevents overheating where it is too hot.
  • a channel portion I4 in which there is a rotating cone which restricts the passageway for material to a reduced-area orifice such that the worm will exert a compacting action on the material within the channel l0.
  • Fluid in conduit I5 serves to control the temperature of the material in the channel l4.
  • a conduit 22 for cooling fluid is also provided exterior to the channel 18.
  • the die 20 is eccentrically mounted, being nearer to that wall of channel l8 which is nearest the worm 12 than to that side of the channel which is distant from the worm.
  • the die is 6" in diameter and the total clearance at the point of minimum clearance is 0.120 and the die is 0.060" off center, having a clearance of 0.090" on the far side 25 and only 0.030" on the near side 26.
  • Similar clearances e. g. 0.090" and 0.030
  • have proved effective in dies of other diameters e. g. 12"). Highly effective results are secured when the clearance at the far side is from two to three times the clearance at the near side.
  • and 32 are provided to steady the die.
  • Extrusion apparatus comprising a working channel and an annular discharge channel having an annular restricted orifice, said discharge channel being disposed at an angle to said working channel whereby a portion of said an extrusion worm adapted to propel material 25 h e hr ueh- 3.
  • Extrusion apparatus as set forth in claim 1 wherein there is provided means to maintain a high but controlled temperature within said working channel.
  • Extrusion apparatus as set forth in claim 4 wherein there is also provided means to cool material within said annular discharge channel.

Description

April 7, 1953 E. F. SVERDRUP RUBBER RECLAIMING APPARATUS Filed NOV. 26, 1949 FIG.
INVENTOR ED W4 RD 5' SVERDRUP BY Q25, fiwulr 26; f/"M ATTORNEYS Patented Apr. 7, 1953 UNITED STAT RUBBER RECLAIMIN G APPARATUS 'EdwardF. Sverdrup, Buffalo, N. Y., assignor to U. S. Rubber Reclaiming Co. Inc., Buffalo, N. Y.
Y Application november'zc, 1949, Serial No; 129,586
This invention relates to apparatus for the reclaiming of rubber, and more particularly to apparatus for treating material in an elongated channel from which it is conducted through an annular discharge channel extending at an angle thereto.
.Such apparatus find their major use in methods and with materials where the control of temperature and other treating conditions are of major importance, and where there are definite time limits on various stages of the treatment. For example, a cooling step carried out as the material passes through the discharge channel must often be precisely correlated with speed of flow to have major effectiveness. It is accordingly important that the time consumed in the passage of material in all parts of the discharge channel be relatively uniform; and it has been found that unsatisfactory results are often traceable to differences in flow speeds at different sides of the discharge channel. These differences result from the effort of the flowing material to take the shortest course, so that, other things being equal, a much greater amount of material will fiow through the near side of the annular discharge channel than through its far side, with the result that any given portion of the material in the near side will stay in the channel a much shorter time than a similar portion will stay in the far side.
Pursuant to the present invention, this condition is remedied by so constructing the discharge channel that the channel is thinner at its near side than at its far side so that a greater proportion of material will be forced into the far side and so that there will be a greater frictional drag on the material at the near side to slow up the new of material. Another advantage is that the material at the far side, which takes the longest course, will include a greater proportion of material which is so far from the channel walls that it will be affected more slowly by heat transfer or other control conditions, whereas substantially all of the faster-moving material in the near side will be in close contact with the channel walls.
For a fuller understanding of the nature and objects of the invention, reference should be had to the following detailed description taken in connection with the accompanying drawings, in which:
Figure 1 is a vertical-sectional view of one form of apparatus embodying the invention;
Figure 2 is an enlarged sectional view of an end-portion thereof; and
5 Claims. (Cl. 18-14) Figure 3 is a cross-sectional view thereof along the line 33 of Figure 2.
In the exemplified form of construction there is provided a channel 10 which, in the present instance, is temperature controlled, as by fluid circulating in conduit-l I. Material to be treated, as vulcanized rubber undergoing reclaiming action, is forced through the channel as by a screw i2 adapted to exert a working and forcing action on the material which heats the material. Controlled-temperature fluid in conduit II not only heats the material where it is not hot enough, but prevents overheating where it is too hot. Beyond the channel I0 in the present instance is a channel portion I4 in which there is a rotating cone which restricts the passageway for material to a reduced-area orifice such that the worm will exert a compacting action on the material within the channel l0. Fluid in conduit I5 serves to control the temperature of the material in the channel l4. Extending at an angle to the channels i0 and I4 (perpendicularly thereto in the present instance) is an annular channel 18 which surrounds a die 20 the interior of which is hollow to provide a conduit 2| for a cooling fluid. A conduit 22 for cooling fluid is also provided exterior to the channel 18.
As will be seen, the die 20 is eccentrically mounted, being nearer to that wall of channel l8 which is nearest the worm 12 than to that side of the channel which is distant from the worm. As exemplified, the die is 6" in diameter and the total clearance at the point of minimum clearance is 0.120 and the die is 0.060" off center, having a clearance of 0.090" on the far side 25 and only 0.030" on the near side 26. Similar clearances (e. g. 0.090" and 0.030") have proved effective in dies of other diameters (e. g. 12"). Highly effective results are secured when the clearance at the far side is from two to three times the clearance at the near side.
Spacer arms as shown at 30, 3| and 32 are provided to steady the die.
While there are given above certain specific examples of this invention and its application in practical use and also certain modifications andalternatives, it should be understood that these are not intended to be exhaustive or to be limiting of the invention. On the contrary, these illustrations and the explanations herein are given in order to acquaint others skilled in the art with this invention and the principles thereof and a suitable manner of its application in practical use, so that others skilled in the art may be enabled to modify the invention and to adapt 3 it and apply it in numerous forms, each as may be best suited to the requirement of a particular use.
The present invention is useful in connection with the inventions of Joseph C. Elgin and myself disclosed and claimed in our co-pending applications Serial Nos. 695,630, filed September 9, 1946, 38,474, filed July 13, 1948, and 233,916, filed June 25, 1951.
I claim:
1. Extrusion apparatus comprising a working channel and an annular discharge channel having an annular restricted orifice, said discharge channel being disposed at an angle to said working channel whereby a portion of said an extrusion worm adapted to propel material 25 h e hr ueh- 3. Apparatus as set forth in claim 2 wherein the space at the remote portion is between about two to about three times as wide as the space at the proximate portion.
4. Extrusion apparatus as set forth in claim 1 wherein there is provided means to maintain a high but controlled temperature within said working channel.
5. Extrusion apparatus as set forth in claim 4 wherein there is also provided means to cool material within said annular discharge channel.
EDWARD F. SVERDRUP.
REFERENCES CITED The following references are of record in the file Q5 this pa ent:
UNITED STATES PATENTS Number Name Date 670,611 Hofimann Mar. 26, 1901 1,133,892 Swartz Mar. 30, 1915 1,364,549 Gordon Jan. 4, 1921 2,216,832 Roy-le Oct. 8, 1940 2,349,178 Kppitke May 16, 1944 2,465,482 Rhodes Mar. 29, 1949
US12958649 1949-11-26 1949-11-26 Rubber reclaiming apparatus Expired - Lifetime US2633602A (en)

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Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2957201A (en) * 1957-07-12 1960-10-25 Continental Can Co Extrusion die for two-ply seamless plastic tubing
US2978748A (en) * 1958-02-06 1961-04-11 Koppers Co Inc Die for extruding tubular plastic film
US2987766A (en) * 1958-11-10 1961-06-13 Allied Chem Apparatus for shaping high molecular weight thermoplastics
US3024494A (en) * 1958-07-21 1962-03-13 Porter Co Inc H K Plastic pipe extrusion head
US3095608A (en) * 1959-12-09 1963-07-02 Cabot Corp Process and apparatus for extruding and curing polymeric compositions
US3111713A (en) * 1961-01-24 1963-11-26 Kaplan Seymour Extrusion cross-head for plastic material
US3111714A (en) * 1962-05-14 1963-11-26 Phillips Petroleum Co Self-centering extrusion die
US3124836A (en) * 1964-03-17 Fischer
US3147515A (en) * 1961-04-07 1964-09-08 Owens Illinois Glass Co Apparatus for extruding tubing
US3242531A (en) * 1961-04-07 1966-03-29 Friedrich Hobiger Apparatus for the production of tubes of synthetic plastics or the like
US3298061A (en) * 1964-02-25 1967-01-17 Midland Ross Corp Extruder apparatus
US3327038A (en) * 1965-06-24 1967-06-20 Koppers Co Inc Extrusion die
US3385917A (en) * 1964-05-12 1968-05-28 Shell Oil Co Method and apparatus for extruding plastics
US3522629A (en) * 1967-06-21 1970-08-04 Erhard Langecker Extrusion press for the manufacture of hoses or tubes made of thermoplastic material
US4161464A (en) * 1978-03-24 1979-07-17 The B. F. Goodrich Company Devulcanized rubber composition and process for preparing same
US5055022A (en) * 1990-03-22 1991-10-08 Hoover Universal, Inc. Multiple parison extrusion device for producing laminar articles
US20150029814A1 (en) * 2013-07-23 2015-01-29 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) Resin discharge mechanism

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US670611A (en) * 1900-12-27 1901-03-26 Fried Krupp Grusonwerk Mouthpiece for presses for the manufacture of pipes and protecting-covers made of plastic materials.
US1133892A (en) * 1912-12-12 1915-03-30 John L Swartz Tubing-die.
US1364549A (en) * 1919-10-01 1921-01-04 Birmingham Iron Foundry Machine for refining rubber
US2216832A (en) * 1937-07-28 1940-10-08 Vernon E Royle Apparatus for extruding tubes
US2349178A (en) * 1941-08-04 1944-05-16 Plax Corp Method of and apparatus for extruding and blowing organic plastic materials
US2465482A (en) * 1947-01-02 1949-03-29 Us Rubber Co Extruding apparatus

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US670611A (en) * 1900-12-27 1901-03-26 Fried Krupp Grusonwerk Mouthpiece for presses for the manufacture of pipes and protecting-covers made of plastic materials.
US1133892A (en) * 1912-12-12 1915-03-30 John L Swartz Tubing-die.
US1364549A (en) * 1919-10-01 1921-01-04 Birmingham Iron Foundry Machine for refining rubber
US2216832A (en) * 1937-07-28 1940-10-08 Vernon E Royle Apparatus for extruding tubes
US2349178A (en) * 1941-08-04 1944-05-16 Plax Corp Method of and apparatus for extruding and blowing organic plastic materials
US2465482A (en) * 1947-01-02 1949-03-29 Us Rubber Co Extruding apparatus

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3124836A (en) * 1964-03-17 Fischer
US2957201A (en) * 1957-07-12 1960-10-25 Continental Can Co Extrusion die for two-ply seamless plastic tubing
US2978748A (en) * 1958-02-06 1961-04-11 Koppers Co Inc Die for extruding tubular plastic film
US3024494A (en) * 1958-07-21 1962-03-13 Porter Co Inc H K Plastic pipe extrusion head
US2987766A (en) * 1958-11-10 1961-06-13 Allied Chem Apparatus for shaping high molecular weight thermoplastics
US3095608A (en) * 1959-12-09 1963-07-02 Cabot Corp Process and apparatus for extruding and curing polymeric compositions
US3111713A (en) * 1961-01-24 1963-11-26 Kaplan Seymour Extrusion cross-head for plastic material
US3147515A (en) * 1961-04-07 1964-09-08 Owens Illinois Glass Co Apparatus for extruding tubing
US3242531A (en) * 1961-04-07 1966-03-29 Friedrich Hobiger Apparatus for the production of tubes of synthetic plastics or the like
US3111714A (en) * 1962-05-14 1963-11-26 Phillips Petroleum Co Self-centering extrusion die
US3298061A (en) * 1964-02-25 1967-01-17 Midland Ross Corp Extruder apparatus
US3385917A (en) * 1964-05-12 1968-05-28 Shell Oil Co Method and apparatus for extruding plastics
US3327038A (en) * 1965-06-24 1967-06-20 Koppers Co Inc Extrusion die
US3522629A (en) * 1967-06-21 1970-08-04 Erhard Langecker Extrusion press for the manufacture of hoses or tubes made of thermoplastic material
US4161464A (en) * 1978-03-24 1979-07-17 The B. F. Goodrich Company Devulcanized rubber composition and process for preparing same
US5055022A (en) * 1990-03-22 1991-10-08 Hoover Universal, Inc. Multiple parison extrusion device for producing laminar articles
US20150029814A1 (en) * 2013-07-23 2015-01-29 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) Resin discharge mechanism
US9861944B2 (en) * 2013-07-23 2018-01-09 Kobe Steel, Ltd. Resin discharge mechanism having cooled slide bar

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