US2282317A - Method of and apparatus for the electrostatic curing of heat curable materials, while under pressure - Google Patents
Method of and apparatus for the electrostatic curing of heat curable materials, while under pressure Download PDFInfo
- Publication number
- US2282317A US2282317A US372694A US37269440A US2282317A US 2282317 A US2282317 A US 2282317A US 372694 A US372694 A US 372694A US 37269440 A US37269440 A US 37269440A US 2282317 A US2282317 A US 2282317A
- Authority
- US
- United States
- Prior art keywords
- pressure
- curing
- chamber
- electrostatic
- under pressure
- 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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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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
- B29C43/10—Isostatic pressing, i.e. using non-rigid pressure-exerting members against rigid parts or dies
-
- 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
-
- 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
- B29C48/05—Filamentary, e.g. strands
-
- 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
- B29L2031/00—Other particular articles
- B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
- B29L2031/3462—Cables
-
- 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
- Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
- Y10S264/46—Molding using an electrical heat
-
- 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
- Y10S277/00—Seal for a joint or juncture
- Y10S277/906—Seal for article of indefinite length, e.g. strip, sheet
Definitions
- This invention relates to an improved method and apparatus for the electrostatic curing of rubber and rubber-like materials, plastics, etc., and has for its .primary object the provision of means whereby the material to be cured is subc, N. 1., a corvaried over'a wide range up to hundreds of pounds to the square inch.
- 2 designates a reel of bare wire which is to be" insulated with any suitable rubber compound, the insulation thereafter to be electrostatically vulcanized with the wire in motion and while the insulation is maintained under pressure.
- Each end oi this pressure cylinder 8 is equipped with a stufiing box 8.
- the insulated wire which I have designated In, it is understood, passes continuously through the pressure cylinder, and in order that the insulation will not be injured and that the insulated wire may be moved with the minimum of'eiiort the stuffing boxes 8 are not leakproof flt on the wire.
- Oil or other electrically conducting medium is supplied to the pressure cylinder by supply pipe ll which is connected to any suitable pressure supply source.
- the stumng boxes I are a loose flt upon the insulated wire, and in order that the conducting fluid I! may not escape and may be maintained under pressure suitable conduits l6 communicate with the stufllng boxes, these conduits being connected to a suitable source or compressed air.
- a high frequency source of electrical energy has been diagrammatically indicated at IS.
- the bare wire 2 constitutes one electrode of this system, the conducting fluid I! the other electrode.
- the material to be cured is passed continuously through a pressure cylinder while being subjected to the influence of an electrostatic field.
- the method of heat curing materials while maintaining-the same under pressure comprises subjecting the material to the influence of an electrostatic fleld while the material is being moved through a pressure chamber containing a pressure fluid in which the material is submerged and while preventing loss of pressure fluid from the chamber past the material as the same passes into and out of the chamber by maintaining the chamber at the points of entrance and exit of the material in communication with an outside source of fluid supply at a pressure which is as high as that of the flrst mentioned pressure fluid and directed inwardly of the chamber.
- An apparatus for the heat curing of materials comprising in combination a pressure chamber, a fluid in said chamber, means for maintaining the fluid under pressure, stufling boxes at the ends of the chamber for permitting of the continuous passage through the chamber of the material to be cured into and out of the chamber, and pressure supply means connected to said stufling boxes for imposing pressure on the fluid in the chamber through the stuiiing boxes in a direction inwardly oi the chamber, the last mentioned pressure being at least as high as the pressure at which the fluid in said chamber is maintained.
- An apparatus for the heat curing of materials comprising in .combination a pressure chamber containing a liquid, means for maintaining said liquid under pressure, a stufling box at eachend of the chamber for permitting oi the continuous passage through the chamber or the material to be cured, and air pressure supply means connected to each 01' said stumng boxes for sealing the stufling boxes against the escape or fluid from the pressure chamber.
- An apparatus for the heat curing of materials comprising in combination a pressure chamber, an electrical conducting liquid in the chamber, means for maintaining said liquid under pressure, a stufllng box at each end of the pressure chamber for permitting of the continuous passage through the chamber of an insuits insulation will be subjected to pressure while under the influence of an electrostatic iield.
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Thermal Sciences (AREA)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
Description
y 19 c. E. BENNETT 2,282,317.
METHOD OF AND APPARATUS FOR THE ELECTROSTATIC CURING OF HEAT CURABLE MATERIALS WHILE UNDER PRESSURE Filed Dec. 51, 1940 ATTORNEYS Patented May 12, 1942 METHOD OF AND APPARATUS -FOR THE ELECTBOSTATICCURING OF HEAT CUR- WHILE UNDER PRES- ABLE MATERIALS, SURE Charles E. Bennett, Bldgewood, N. 1., assignor to The Okonite Company, Panel poration or New Jersey Application December 31, 1940, Serial No. 372,694
.4Claims.
This invention relates to an improved method and apparatus for the electrostatic curing of rubber and rubber-like materials, plastics, etc., and has for its .primary object the provision of means whereby the material to be cured is subc, N. 1., a corvaried over'a wide range up to hundreds of pounds to the square inch.
While the ability to-maintain high pressures 2 on the insulation during the curing stage is of jected to fluid pressure during the curing operation.
The accompanying. drawing illustrates one embodiment of my invention as applied to the curing of the insulation of insulated conductors.
Referring to the drawing in detail: 2 designates a reel of bare wire which is to be" insulated with any suitable rubber compound, the insulation thereafter to be electrostatically vulcanized with the wire in motion and while the insulation is maintained under pressure.
4 designates the apparatus for applying the insulation. This may be the usual extruding mechanism employed in the art of insulating conductors. It is obvious that the wire 2 as it emerges from the mechanism 4 has been insulated with an uncured insulating material.
6 designates a pressure cylinder of porcelain, for instance, or other insulating material sufflciently strong to withstand pressures of several hundred pounds.
Each end oi this pressure cylinder 8 is equipped with a stufiing box 8. The insulated wire which I have designated In, it is understood, passes continuously through the pressure cylinder, and in order that the insulation will not be injured and that the insulated wire may be moved with the minimum of'eiiort the stuffing boxes 8 are not leakproof flt on the wire.
Oil or other electrically conducting medium is supplied to the pressure cylinder by supply pipe ll which is connected to any suitable pressure supply source.
As above mentioned the stumng boxes I are a loose flt upon the insulated wire, and in order that the conducting fluid I! may not escape and may be maintained under pressure suitable conduits l6 communicate with the stufllng boxes, these conduits being connected to a suitable source or compressed air.
paramount importance, it will be appreciated also that by reason of the balanced condition oi the system anly the minimum effort is required to advance the conductor assembly.
A high frequency source of electrical energy has been diagrammatically indicated at IS. The bare wire 2 constitutes one electrode of this system, the conducting fluid I! the other electrode.
It will be seen from all of the foregoing that in accordance with this invention the material to be cured is passed continuously through a pressure cylinder while being subjected to the influence of an electrostatic field.
It will be understood that this air pressure subcontinuously through the pressure cylinder, is
eliminated, enabling the insulation to be maintained under high pressure during the curing operation. The pressures employed may be It is to be understood that changes may be made in the details of the apparatus above described without departing from the spirit and scope of the invention.
What l2 claim is:
1. The method of heat curing materials while maintaining-the same under pressure, which method comprises subjecting the material to the influence of an electrostatic fleld while the material is being moved through a pressure chamber containing a pressure fluid in which the material is submerged and while preventing loss of pressure fluid from the chamber past the material as the same passes into and out of the chamber by maintaining the chamber at the points of entrance and exit of the material in communication with an outside source of fluid supply at a pressure which is as high as that of the flrst mentioned pressure fluid and directed inwardly of the chamber.
2. An apparatus for the heat curing of materials comprising in combination a pressure chamber, a fluid in said chamber, means for maintaining the fluid under pressure, stufling boxes at the ends of the chamber for permitting of the continuous passage through the chamber of the material to be cured into and out of the chamber, and pressure supply means connected to said stufling boxes for imposing pressure on the fluid in the chamber through the stuiiing boxes in a direction inwardly oi the chamber, the last mentioned pressure being at least as high as the pressure at which the fluid in said chamber is maintained.
8. An apparatus for the heat curing of materials comprising in .combination a pressure chamber containing a liquid, means for maintaining said liquid under pressure, a stufling box at eachend of the chamber for permitting oi the continuous passage through the chamber or the material to be cured, and air pressure supply means connected to each 01' said stumng boxes for sealing the stufling boxes against the escape or fluid from the pressure chamber.
4. An apparatus for the heat curing of materials comprising in combination a pressure chamber, an electrical conducting liquid in the chamber, means for maintaining said liquid under pressure, a stufllng box at each end of the pressure chamber for permitting of the continuous passage through the chamber of an insuits insulation will be subjected to pressure while under the influence of an electrostatic iield.
CHARLES E. BENNETT.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US372694A US2282317A (en) | 1940-12-31 | 1940-12-31 | Method of and apparatus for the electrostatic curing of heat curable materials, while under pressure |
GB8357/41A GB547695A (en) | 1940-12-31 | 1941-07-02 | An improved apparatus for heat treating vulcanisable and other electric insulating material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US372694A US2282317A (en) | 1940-12-31 | 1940-12-31 | Method of and apparatus for the electrostatic curing of heat curable materials, while under pressure |
Publications (1)
Publication Number | Publication Date |
---|---|
US2282317A true US2282317A (en) | 1942-05-12 |
Family
ID=23469243
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US372694A Expired - Lifetime US2282317A (en) | 1940-12-31 | 1940-12-31 | Method of and apparatus for the electrostatic curing of heat curable materials, while under pressure |
Country Status (2)
Country | Link |
---|---|
US (1) | US2282317A (en) |
GB (1) | GB547695A (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2463288A (en) * | 1945-03-26 | 1949-03-01 | Goodrich Co B F | Electrostatic heating method and apparatus for vulcanizing rubber and similar material |
US2494716A (en) * | 1945-11-08 | 1950-01-17 | Induction Heating Corp | Method and apparatus for treating materials dielectrically |
US2497093A (en) * | 1944-06-17 | 1950-02-14 | Sperry Corp | High-frequency wattmeter |
US2497665A (en) * | 1945-02-07 | 1950-02-14 | Brush Dev Co | Piezoelectric device |
US2526697A (en) * | 1946-06-21 | 1950-10-24 | Armstrong Cork Co | Dielectric heating method and apparatus |
US2554254A (en) * | 1949-06-16 | 1951-05-22 | Westinghouse Electric Corp | Vacuum impregnation process |
US3780255A (en) * | 1971-09-30 | 1973-12-18 | Celanese Corp | Apparatus for heat treatment of substrates |
US3872278A (en) * | 1971-09-30 | 1975-03-18 | Celanese Corp | Method for heat treatment of substrates |
CN104015325A (en) * | 2014-06-04 | 2014-09-03 | 东莞市格尼斯电子有限公司 | Heat-shrink tube processing equipment |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1185319B (en) * | 1959-12-23 | 1965-01-14 | Dr Walter Hillesheimer | Method of joining metals together |
-
1940
- 1940-12-31 US US372694A patent/US2282317A/en not_active Expired - Lifetime
-
1941
- 1941-07-02 GB GB8357/41A patent/GB547695A/en not_active Expired
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2497093A (en) * | 1944-06-17 | 1950-02-14 | Sperry Corp | High-frequency wattmeter |
US2497665A (en) * | 1945-02-07 | 1950-02-14 | Brush Dev Co | Piezoelectric device |
US2463288A (en) * | 1945-03-26 | 1949-03-01 | Goodrich Co B F | Electrostatic heating method and apparatus for vulcanizing rubber and similar material |
US2494716A (en) * | 1945-11-08 | 1950-01-17 | Induction Heating Corp | Method and apparatus for treating materials dielectrically |
US2526697A (en) * | 1946-06-21 | 1950-10-24 | Armstrong Cork Co | Dielectric heating method and apparatus |
US2554254A (en) * | 1949-06-16 | 1951-05-22 | Westinghouse Electric Corp | Vacuum impregnation process |
US3780255A (en) * | 1971-09-30 | 1973-12-18 | Celanese Corp | Apparatus for heat treatment of substrates |
US3872278A (en) * | 1971-09-30 | 1975-03-18 | Celanese Corp | Method for heat treatment of substrates |
CN104015325A (en) * | 2014-06-04 | 2014-09-03 | 东莞市格尼斯电子有限公司 | Heat-shrink tube processing equipment |
CN104015325B (en) * | 2014-06-04 | 2016-04-20 | 东莞市格尼斯电子有限公司 | A kind of heat-shrink tube process equipment |
Also Published As
Publication number | Publication date |
---|---|
GB547695A (en) | 1942-09-07 |
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