CA1316656C - Method for manufacturing an electromagnetic shielding joint, machine for carrying out this method, and joint obtained by means of this method or this machine - Google Patents
Method for manufacturing an electromagnetic shielding joint, machine for carrying out this method, and joint obtained by means of this method or this machineInfo
- Publication number
- CA1316656C CA1316656C CA000588019A CA588019A CA1316656C CA 1316656 C CA1316656 C CA 1316656C CA 000588019 A CA000588019 A CA 000588019A CA 588019 A CA588019 A CA 588019A CA 1316656 C CA1316656 C CA 1316656C
- Authority
- CA
- Canada
- Prior art keywords
- core
- joint
- calibration
- elastomeric material
- machine
- 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 - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0007—Casings
- H05K9/0015—Gaskets or seals
-
- 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
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/30—Drawing through a die
-
- 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
- B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
- B29C63/18—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor using tubular layers or sheathings
-
- 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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
- B29C70/82—Forcing wires, nets or the like partially or completely into the surface of an article, e.g. by cutting and pressing
-
- 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
- B29K2313/00—Use of textile products or fabrics as reinforcement
-
- 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
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0003—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular electrical or magnetic properties, e.g. piezoelectric
- B29K2995/0005—Conductive
-
- 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
- B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
- B29L2031/3055—Cars
- B29L2031/3061—Number plates
-
- 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
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49117—Conductor or circuit manufacturing
- Y10T29/49204—Contact or terminal manufacturing
- Y10T29/49208—Contact or terminal manufacturing by assembling plural parts
- Y10T29/4921—Contact or terminal manufacturing by assembling plural parts with bonding
- Y10T29/49211—Contact or terminal manufacturing by assembling plural parts with bonding of fused material
-
- 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
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49117—Conductor or circuit manufacturing
- Y10T29/49204—Contact or terminal manufacturing
- Y10T29/49208—Contact or terminal manufacturing by assembling plural parts
- Y10T29/4922—Contact or terminal manufacturing by assembling plural parts with molding of insulation
Abstract
ABSTRACT OF THE DISCLOSURE
The present invention concerns a method for manufacturing an electromagnetic shielding joint and a machine for carrying out this method.
This machine comprises essentially one first die (1) for extruding a core (2) of an elastomeric material, means permitting the core (2) to be coated by bands (3) of an electrically conductive textile material, a die (4) for calibrating the coated core, a heating housing (5) and means (6) for winding up the joint just manufactured.
This machine permits manufacturing in a continuous manner a joint forming a barrier against the electromagnetic waves and useful for assemblies of mechanical parts of any kind.
The present invention concerns a method for manufacturing an electromagnetic shielding joint and a machine for carrying out this method.
This machine comprises essentially one first die (1) for extruding a core (2) of an elastomeric material, means permitting the core (2) to be coated by bands (3) of an electrically conductive textile material, a die (4) for calibrating the coated core, a heating housing (5) and means (6) for winding up the joint just manufactured.
This machine permits manufacturing in a continuous manner a joint forming a barrier against the electromagnetic waves and useful for assemblies of mechanical parts of any kind.
Description
13166~6 The present invention has essentially as an object a method for manufacturing an electromagnetic shielding joint.
It concerns also an automatic machine for carrying out this method, as well as a joint obtained by this method or this machine.
Various kinds of electromagnetic joints have already been proposed which are useful for ensuring the electric continuity of assembled parts and therefore for creating a barrier against electromagnetic radiation.
Thus, there has been proposed joints obtained by moulding or extrusion and made of conductive elastomeric materials ensuring an electromagnetic-radiation tightness and permitting possibly ensuring a fluid tightness when the joint is interposed between two parts. However9 the manufacture of these joints is still very costly.
; Joints are known also which are made from electrically conductive wire knittings and which form in a way a pad of interlocked wires. Such joints do not have a satisfactory resiliency and can be crashed easily, so that the electromagnetic waves can pass through the joint which therefore does not form an effective barrier against electromagnetic radiation.
Electomagnetic shielding joints are also known which are formed of a core of an elastomeric material, and of a wire sleeve knitted around the core.
Consequently, the sleeve and the core of the joint form a loose assembly the control and the handling of which are therefore not easy, to say nothing of the fact that the process of core vulcanization on the one hand and the process of knitting of the wire sleeve around this core on the other hand, are still long and costly as a whole.
The present invention has as an object to remedy .
, 131~6S6 the above drawbacks by providing an electromagnetic shielding joint the manufacture of which is cheap and which possesses excellent properties concerning the electromagnetic-wave tightness and its forming, which enables it to be rapidly adapted and mounted between two parts of any kind to be tightened and which provides consequently a substantial decrease of mounting time and cost with respect to the known joints.
For this purpose, the invention has as an object a method for manufacturing an electromagnetic shielding joint comprising a core of an electromagnetic material and at least one layer of electrically conductive textile material surrounding this core, characterized in that the following steps are carried out continuously :
the extrusion of the core, the coating of this core with the aid of electrically conductive textile bands and the calibration of the so-coated core by passing through at least one die permitting, in addition to the calibration, rendering the bands of textile material solid with the elastomeric material of the core.
It is therefore understood that, owing to this method, not only the process of coating the core with the aid of textile bands is rapid and cheap, but also the textile bands will be solid with the elastomeric material of the core which remedies all the drawbacks of the prior joints and in particular of those comprising a core on which a conductive wire sleeve is simply knitted.
According to another feature of the method of the invention, a heating of the coated core is effected after the aforesaid calibration.
According to still another feature of this method, the coated core is shaped into an appropriately shaped joint either after the aforesaid heating or after the calibration, in which case the joint which has been shaped after the calibration is then heated.
, 131~6~6 According to an embodiment of this invention, the aforesaid extrusion, coating and calibration can be~
obtained by co-extruding the core and the bands of textile material.
The invention concerns also a machine for carrying out the method complying with the above features and of the type comprising at least one die for extruding an elastomeric material and means for feeding at least one band of an electrically conductive textile material for coating the extruded elastomeric material, this machine being character,ized in that it comprises, downstream of the aforesaid feeding means, at least one die for calibrating the elas~tomeric core-textile band assembly.
According to another feature of this machine, a baking oven is provided downstream of the calibration die.
This invention concerns also an electromagnetic shielding joint obtained by the method and/or the machine complying with the above features, this joint comprising at least one layer of an electrically conductive textile material incorporated at its core-contacting part into the elastomeric material of this core.
The core can be made of any appropriate solid or alveolated elastomeric material, whereas the layer of electrically conductive textile material is formed of bands the wires of which are interlocked in a tight or loose manner.
Other features and advantages of the invention will appear more clearly as the following detailed description proceeds with reference to the appended drawing, given by way of example only, and wherein :
- figure 1 is a very diagrammatic view of a machine permitting automatically manufacturing in a continuous manner a shielding joint according to this invention ;
- figure 2 is a plane view of an example of joint `" 13166~6 formed with the aid of the joint manufactured by the machine of figure ~ and shaped with the aid of appropriate tools ; and - figures 3 and 4 are cross-sectional views of a joint according to this invention with a circular and rectangular cross-section respectively.
According to the embodiment shown in figure 1, a machine according to the principles of the invention comprises essentially a first die 1 permitting extruding an elastomeric pad intended to form the core 2 of the joint, means (not shown) for feeding one or several bands 3 of an electrically conductive textile material and which are wound about core 2, a second die 4 for calibrating the core 2 - band 3 assembly, a baking oven 5 and a bobbin 6 for winding up and storing the joint just manufactured.
The first die 1 comprises an opening 7 with any cross-section permitting obtaining a core 2, which is made of any elastomeric material and which has for example a circular or rectangular cross-section, as seen in figures 3 and 4.
The extruded core 2 can be made of any appropriate elastomeric material such for example as polychloroprene, silicone, polyurethane, fluorinated elastomere, epichlorhydrine, or any combination of these materials depending on the intended applications of the joint.
In addition, the elastomeric core 2 can be solid or alveolated so as to reduce the compression stresses of the joint depending on the intended application.
The core 2 can further be obtained with the aid of solid or alveolated thermoplastic and thermostable elastomeres such as polyvinylchloride, polyamide, polyethylene, etc.
The bands 3 for coating the core 2 are formed of electrically conductive wires 8 which can be interlocked in a tight or more or less loose manner.
~ .
~31`~$~6 These conductive wires can for example be made of nickel, stainless steel, copper, aluminium, coated steel, etc.
The bands or tapes 3 can of course be formed by any known method such for example as by braiding or knitting.
Once the core 2 coated by bands 3, the assembly passes through the opening 9 of the second die 4, as clearly seen in figure 1, which permits not only calibrating this assembly, but also rendering bands 3 solid with the elastomeric material of core 2, as seen at 10 in figures 3 and 4.
More precisely, in the area shown at 10, it is seen that the parts of bands 3 which are in contact with core 2 and the elastomeric material forming this core interpenetrate mutually, so that the coated pad leaving the die 4 forms an integral, homogeneous, flexible element which presents all the required qualities of electromagnetic-wave tightness.
Although not compulsory, this element or joint can be heated and vulcanized, in a continuous manner, in the housing or oven 5 before being wound up on bobbin 6. The coated core can then be shaped into an appropriately shaped joint, whether this joint has been submitted to a heating in housing 5 or not. If the heating is not performed, i.e. when the joint leaves the calibration at 4 and is shaped following this calibration, the shaped joint can be thereafter heated and vulcanized.
An example of shape for the joint J is shown in figure 2, which joint can be used for ensuring the electromagnetic-wave tightness between a housing and its lid. This joint J can comprise curvated portions 11 in order to avoid that screws for fastening the lid to the housing pass through the joint, and at 12 are shown the end-to-end joined and possibly welded ends of joint J
made with the aid of appropriate tools after a length of joint has been unwound from bobbin 6.
`- 131~6~
As previously explained, the shielding joint according to this invention can have any appropriate shape such as a circular or polygonal shape in cross-section (see figures 3 and 4), depending on the intended uses of said joint.
Therefore, according to the invention, an electromagnetic shielding joint has been obtained which can be manufactured in a continuous manner, which is very advantageous concerning the cost of manufacture, the shaping and the mounting time, and which presents remarkable performances due in particular to the fact that the electrically conductive textile is rendered solid with the core of the joint and to the calibration.
Besides, such a joint presents a good compression strength, as well as a very satisfactory behaviour and resiliency in the presence of mechanical vibrations, which was not the case with the previously known shielding joints.
Of course, the invention is by no means limited to the embodiment described and illustrated which has been given by way of example only.
Thus, the extrusion, the coating of the core and the calibration could be obtained by co-extrusion of the core and of the textile bands instead of carrying out successively these three processes as previously explained.
Therefore, the invention comprises all the technical equivalents of the means described as well as the combinations thereof provided that these are carried out according to its spirit.
It concerns also an automatic machine for carrying out this method, as well as a joint obtained by this method or this machine.
Various kinds of electromagnetic joints have already been proposed which are useful for ensuring the electric continuity of assembled parts and therefore for creating a barrier against electromagnetic radiation.
Thus, there has been proposed joints obtained by moulding or extrusion and made of conductive elastomeric materials ensuring an electromagnetic-radiation tightness and permitting possibly ensuring a fluid tightness when the joint is interposed between two parts. However9 the manufacture of these joints is still very costly.
; Joints are known also which are made from electrically conductive wire knittings and which form in a way a pad of interlocked wires. Such joints do not have a satisfactory resiliency and can be crashed easily, so that the electromagnetic waves can pass through the joint which therefore does not form an effective barrier against electromagnetic radiation.
Electomagnetic shielding joints are also known which are formed of a core of an elastomeric material, and of a wire sleeve knitted around the core.
Consequently, the sleeve and the core of the joint form a loose assembly the control and the handling of which are therefore not easy, to say nothing of the fact that the process of core vulcanization on the one hand and the process of knitting of the wire sleeve around this core on the other hand, are still long and costly as a whole.
The present invention has as an object to remedy .
, 131~6S6 the above drawbacks by providing an electromagnetic shielding joint the manufacture of which is cheap and which possesses excellent properties concerning the electromagnetic-wave tightness and its forming, which enables it to be rapidly adapted and mounted between two parts of any kind to be tightened and which provides consequently a substantial decrease of mounting time and cost with respect to the known joints.
For this purpose, the invention has as an object a method for manufacturing an electromagnetic shielding joint comprising a core of an electromagnetic material and at least one layer of electrically conductive textile material surrounding this core, characterized in that the following steps are carried out continuously :
the extrusion of the core, the coating of this core with the aid of electrically conductive textile bands and the calibration of the so-coated core by passing through at least one die permitting, in addition to the calibration, rendering the bands of textile material solid with the elastomeric material of the core.
It is therefore understood that, owing to this method, not only the process of coating the core with the aid of textile bands is rapid and cheap, but also the textile bands will be solid with the elastomeric material of the core which remedies all the drawbacks of the prior joints and in particular of those comprising a core on which a conductive wire sleeve is simply knitted.
According to another feature of the method of the invention, a heating of the coated core is effected after the aforesaid calibration.
According to still another feature of this method, the coated core is shaped into an appropriately shaped joint either after the aforesaid heating or after the calibration, in which case the joint which has been shaped after the calibration is then heated.
, 131~6~6 According to an embodiment of this invention, the aforesaid extrusion, coating and calibration can be~
obtained by co-extruding the core and the bands of textile material.
The invention concerns also a machine for carrying out the method complying with the above features and of the type comprising at least one die for extruding an elastomeric material and means for feeding at least one band of an electrically conductive textile material for coating the extruded elastomeric material, this machine being character,ized in that it comprises, downstream of the aforesaid feeding means, at least one die for calibrating the elas~tomeric core-textile band assembly.
According to another feature of this machine, a baking oven is provided downstream of the calibration die.
This invention concerns also an electromagnetic shielding joint obtained by the method and/or the machine complying with the above features, this joint comprising at least one layer of an electrically conductive textile material incorporated at its core-contacting part into the elastomeric material of this core.
The core can be made of any appropriate solid or alveolated elastomeric material, whereas the layer of electrically conductive textile material is formed of bands the wires of which are interlocked in a tight or loose manner.
Other features and advantages of the invention will appear more clearly as the following detailed description proceeds with reference to the appended drawing, given by way of example only, and wherein :
- figure 1 is a very diagrammatic view of a machine permitting automatically manufacturing in a continuous manner a shielding joint according to this invention ;
- figure 2 is a plane view of an example of joint `" 13166~6 formed with the aid of the joint manufactured by the machine of figure ~ and shaped with the aid of appropriate tools ; and - figures 3 and 4 are cross-sectional views of a joint according to this invention with a circular and rectangular cross-section respectively.
According to the embodiment shown in figure 1, a machine according to the principles of the invention comprises essentially a first die 1 permitting extruding an elastomeric pad intended to form the core 2 of the joint, means (not shown) for feeding one or several bands 3 of an electrically conductive textile material and which are wound about core 2, a second die 4 for calibrating the core 2 - band 3 assembly, a baking oven 5 and a bobbin 6 for winding up and storing the joint just manufactured.
The first die 1 comprises an opening 7 with any cross-section permitting obtaining a core 2, which is made of any elastomeric material and which has for example a circular or rectangular cross-section, as seen in figures 3 and 4.
The extruded core 2 can be made of any appropriate elastomeric material such for example as polychloroprene, silicone, polyurethane, fluorinated elastomere, epichlorhydrine, or any combination of these materials depending on the intended applications of the joint.
In addition, the elastomeric core 2 can be solid or alveolated so as to reduce the compression stresses of the joint depending on the intended application.
The core 2 can further be obtained with the aid of solid or alveolated thermoplastic and thermostable elastomeres such as polyvinylchloride, polyamide, polyethylene, etc.
The bands 3 for coating the core 2 are formed of electrically conductive wires 8 which can be interlocked in a tight or more or less loose manner.
~ .
~31`~$~6 These conductive wires can for example be made of nickel, stainless steel, copper, aluminium, coated steel, etc.
The bands or tapes 3 can of course be formed by any known method such for example as by braiding or knitting.
Once the core 2 coated by bands 3, the assembly passes through the opening 9 of the second die 4, as clearly seen in figure 1, which permits not only calibrating this assembly, but also rendering bands 3 solid with the elastomeric material of core 2, as seen at 10 in figures 3 and 4.
More precisely, in the area shown at 10, it is seen that the parts of bands 3 which are in contact with core 2 and the elastomeric material forming this core interpenetrate mutually, so that the coated pad leaving the die 4 forms an integral, homogeneous, flexible element which presents all the required qualities of electromagnetic-wave tightness.
Although not compulsory, this element or joint can be heated and vulcanized, in a continuous manner, in the housing or oven 5 before being wound up on bobbin 6. The coated core can then be shaped into an appropriately shaped joint, whether this joint has been submitted to a heating in housing 5 or not. If the heating is not performed, i.e. when the joint leaves the calibration at 4 and is shaped following this calibration, the shaped joint can be thereafter heated and vulcanized.
An example of shape for the joint J is shown in figure 2, which joint can be used for ensuring the electromagnetic-wave tightness between a housing and its lid. This joint J can comprise curvated portions 11 in order to avoid that screws for fastening the lid to the housing pass through the joint, and at 12 are shown the end-to-end joined and possibly welded ends of joint J
made with the aid of appropriate tools after a length of joint has been unwound from bobbin 6.
`- 131~6~
As previously explained, the shielding joint according to this invention can have any appropriate shape such as a circular or polygonal shape in cross-section (see figures 3 and 4), depending on the intended uses of said joint.
Therefore, according to the invention, an electromagnetic shielding joint has been obtained which can be manufactured in a continuous manner, which is very advantageous concerning the cost of manufacture, the shaping and the mounting time, and which presents remarkable performances due in particular to the fact that the electrically conductive textile is rendered solid with the core of the joint and to the calibration.
Besides, such a joint presents a good compression strength, as well as a very satisfactory behaviour and resiliency in the presence of mechanical vibrations, which was not the case with the previously known shielding joints.
Of course, the invention is by no means limited to the embodiment described and illustrated which has been given by way of example only.
Thus, the extrusion, the coating of the core and the calibration could be obtained by co-extrusion of the core and of the textile bands instead of carrying out successively these three processes as previously explained.
Therefore, the invention comprises all the technical equivalents of the means described as well as the combinations thereof provided that these are carried out according to its spirit.
Claims (8)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. Method for manufacturing an electromagnetic shielding joint comprising a core of an elastomeric material and at least one layer of an electrically conductive textile material surrounding this core, characterized in that the following steps are carried out continuously: the extrusion of the core, the coating of this core with the aid of electrically conductive textile bands and the calibration of the so coated core by passing through at least one die permitting, in addition to the calibration, rendering the bands of textile material solid with the elastomeric material of the core.
2. Method according to claim 1, characterized in that a heating of the coated core is effected after the aforesaid calibration.
3. Method according to claim 1, characterized in that the coated core is shaped into an appropriately shaped joint either after the aforesaid heating or after the calibration, in which case the shaped joint is thereafter heated and vulcanized.
4. Method according to claim 1, characterized in that the aforesaid extrusion, coating and calibration are obtained by co-extruding the core and the textile bands.
5. Machine for carrying out the method according to claim 1, and of the type comprising at least one die for extruding an elastomeric material and means for feeding at least one band of an electrically conductive textile material for coating the extruded elastomeric material, characterized in that it comprises, downstream of the aforesaid feeding means, at least one die for calibrating the elastomeric core - textile band assembly.
6. Machine according to claim 5, characterized by a baking oven provided downstream of the calibration die.
7. Electromagnetic shielding joint obtained by the method according to claim 1 and of the type comprising one core of an elastomeric material coated by at least one layer of an electrically conductive textile material, characterized in that the layer of electrically conductive textile material is incorporated at its part contacting core, into the elastomeric material of this core.
8. Joint according to claim 7, characterized in that the core is made of a solid or alveolated elastomeric material, whereas the layer of textile material is formed of bands the wires of which are interlocked in a tight or loose manner.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8800320A FR2625863B1 (en) | 1988-01-13 | 1988-01-13 | METHOD FOR MANUFACTURING AN ELECTROMAGNETIC SHIELDING JOINT, MACHINE FOR CARRYING OUT THIS METHOD, AND JOINT OBTAINED USING THIS METHOD OR THIS MACHINE |
| FR8800320 | 1988-01-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1316656C true CA1316656C (en) | 1993-04-27 |
Family
ID=9362263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000588019A Expired - Fee Related CA1316656C (en) | 1988-01-13 | 1989-01-12 | Method for manufacturing an electromagnetic shielding joint, machine for carrying out this method, and joint obtained by means of this method or this machine |
Country Status (6)
| Country | Link |
|---|---|
| US (2) | US4966637A (en) |
| EP (1) | EP0326441B1 (en) |
| AT (1) | ATE81248T1 (en) |
| CA (1) | CA1316656C (en) |
| DE (1) | DE68903000T2 (en) |
| FR (1) | FR2625863B1 (en) |
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| US5407616A (en) * | 1991-12-19 | 1995-04-18 | E. I. Du Pont De Nemours And Company | Method for making cylindrical preforms |
| US6454267B1 (en) * | 1992-08-19 | 2002-09-24 | The Boeing Company | Corrosion resistant gasket for aircraft |
| US5791654A (en) * | 1992-08-19 | 1998-08-11 | The Boeing Company | Corrosion resistant gasket in combination with aircraft antenna |
| US6719293B1 (en) * | 1992-08-19 | 2004-04-13 | The Boeing Company | Corrosion resistant gasket for aircraft |
| WO1995002953A1 (en) * | 1993-07-13 | 1995-01-26 | Schlegel Corporation | Small diameter emi gasket with conductively wrapped tube |
| US5512709A (en) * | 1994-02-28 | 1996-04-30 | Jencks; Andrew D. | Electromagnetic emission-shielding gasket |
| WO1997008928A1 (en) * | 1995-08-25 | 1997-03-06 | Parker-Hannifin Corporation | Emi shielding gasket having a consolidated conductive sheathing |
| AU1351997A (en) * | 1995-12-21 | 1997-07-14 | Intel Corporation | Apparatus for sealing electromagnetic emission |
| US5788538A (en) * | 1996-07-31 | 1998-08-04 | Berg Technology, Inc. | Shield for modular jack |
| US5717577A (en) * | 1996-10-30 | 1998-02-10 | Ericsson, Inc. | Gasketed shield can for shielding emissions of electromagnetic energy |
| US6248393B1 (en) | 1998-02-27 | 2001-06-19 | Parker-Hannifin Corporation | Flame retardant EMI shielding materials and method of manufacture |
| JP2003521110A (en) * | 2000-01-24 | 2003-07-08 | アメスベリー グループ， インコーポレイテッド | Method of producing EMI shielding gasket |
| WO2003030610A1 (en) | 2001-10-02 | 2003-04-10 | Parker Hannifin Corporation | Emi shielding gasket construction |
| US7176387B1 (en) * | 2005-12-05 | 2007-02-13 | King Star Enterprise, Inc. | Electromagnetic shielding device |
| US20070137845A1 (en) * | 2005-12-15 | 2007-06-21 | Valeo, Inc. | Coating for components having dampening or sealing functions |
| US9617783B2 (en) * | 2011-09-20 | 2017-04-11 | Mitsubishi Aircraft Corporation | Gasket seal, door of aircraft, seal structure for opening portion of aircraft, and aircraft |
| AU2014209855B2 (en) * | 2013-01-25 | 2017-04-06 | Electrolux Home Products Corporation N. V. | An oven door and a chassis for a microwave oven or an appliance with microwave heating function |
| US9739402B2 (en) | 2013-03-04 | 2017-08-22 | Eaton Corporation | Electrically conductive seals for fluid conveyance systems |
| JP2016089153A (en) * | 2014-10-29 | 2016-05-23 | デクセリアルズ株式会社 | Conductive material |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE936639C (en) * | 1951-07-12 | 1955-12-15 | Telefunken Gmbh | Shielding seal for high frequency devices |
| US3312769A (en) * | 1965-10-29 | 1967-04-04 | Borg Warner | R. f. seal for electromagnetic wave radiation shielding enclosure |
| GB1275379A (en) * | 1970-10-27 | 1972-05-24 | Uk Nauchno Issle Dovatelsky I | A process for covering thermoplastics pipes with fibrous materials |
| FR2308030A1 (en) * | 1975-04-15 | 1976-11-12 | Dunlop Sa | Electrical continuity seal for aircraft - has metal mat in surface of hollow elastomer body reinforced by fabric layer |
| US4037009A (en) * | 1976-08-11 | 1977-07-19 | Metex Corporation | Conductive elastomeric elements |
| US4065138A (en) * | 1977-03-07 | 1977-12-27 | Metex Corporation | Metal mesh strip and embedded fin gasket for shielding against electromagnetic interference |
| JPS6038809B2 (en) * | 1979-11-20 | 1985-09-03 | 信越ポリマ−株式会社 | Method for manufacturing elastic structure with anisotropic conductivity |
| FR2509949A1 (en) * | 1981-07-15 | 1983-01-21 | Aerospatiale | Electromagnetic tight and water-tight joint for shielding box - comprises supple rod surrounded by metallic braid and supple strips |
| US4515850A (en) * | 1982-09-13 | 1985-05-07 | Tdk Corporation | Composite ferrite textile |
| NL8400816A (en) * | 1984-03-14 | 1985-10-01 | Wavin Bv | METHOD FOR MANUFACTURING TUBE MUFF AND FITTINGS, AND APPARATUS FOR CARRYING OUT THIS METHOD AND TUBE SOCKET OR FITTING MADE ACCORDING TO THIS METHOD |
-
1988
- 1988-01-13 FR FR8800320A patent/FR2625863B1/en not_active Expired - Fee Related
-
1989
- 1989-01-05 DE DE8989400035T patent/DE68903000T2/en not_active Expired - Fee Related
- 1989-01-05 AT AT89400035T patent/ATE81248T1/en not_active IP Right Cessation
- 1989-01-05 EP EP89400035A patent/EP0326441B1/en not_active Expired - Lifetime
- 1989-01-10 US US07/295,702 patent/US4966637A/en not_active Expired - Fee Related
- 1989-01-12 CA CA000588019A patent/CA1316656C/en not_active Expired - Fee Related
-
1990
- 1990-04-06 US US07/506,963 patent/US5006666A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| US5006666A (en) | 1991-04-09 |
| FR2625863A1 (en) | 1989-07-13 |
| FR2625863B1 (en) | 1992-01-24 |
| EP0326441A1 (en) | 1989-08-02 |
| US4966637A (en) | 1990-10-30 |
| DE68903000T2 (en) | 1993-04-29 |
| EP0326441B1 (en) | 1992-09-30 |
| DE68903000D1 (en) | 1992-11-05 |
| ATE81248T1 (en) | 1992-10-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed | ||
| MKLA | Lapsed |
Effective date: 19970428 |
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| MKLA | Lapsed |
Effective date: 19970428 |