WO2018141566A1 - Planarity of reinforced rubber layers during tyre production - Google Patents
Planarity of reinforced rubber layers during tyre production Download PDFInfo
- Publication number
- WO2018141566A1 WO2018141566A1 PCT/EP2018/051436 EP2018051436W WO2018141566A1 WO 2018141566 A1 WO2018141566 A1 WO 2018141566A1 EP 2018051436 W EP2018051436 W EP 2018051436W WO 2018141566 A1 WO2018141566 A1 WO 2018141566A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- correction
- installation
- rubber layer
- roller
- reinforced rubber
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
- B65H23/26—Registering, tensioning, smoothing or guiding webs longitudinally by transverse stationary or adjustable bars or rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/0061—Accessories, details or auxiliary operations not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/38—Textile inserts, e.g. cord or canvas layers, for tyres; Treatment of inserts prior to building the tyre
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/0061—Accessories, details or auxiliary operations not otherwise provided for
- B29D2030/0066—Tyre quality control during manufacturing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2801/00—Application field
- B65H2801/93—Tyres
Definitions
- the present invention relates in general to the manufacture of reinforced rubber layers and of vehicle tyres manufactured therewith. More particularly, the present invention relates to the conservation of planarity in continuous reinforced rubber layers prior to final building of the green tyre.
- the present invention relates to a correction installation for ensuring the planarity of a rubber layer reinforced with continuous metallic
- the correction installation includes a correction device having a correction roller.
- This correction roller is an elongate cylindrical component of predetermined diameter with a curved surface along the length of which contact is established between the reinforced rubber layer and the curved surface as the layer passes through the correction installation so that, during the course of a correction process performed by the correction installation, the
- reinforcements are spaced uniformly with respect to one another and are also displaced uniformly in such a way that a centre of each reinforcement remains collinear along a defined longitudinal axis through a thickness of the rubber layer.
- the correction roller has a centre through which an axis of rotation of the correction roller is defined.
- the correction roller extends at a
- installation is positioned between an upstream roller that feeds the reinforced rubber layer to the
- installation further includes a roller support that maintains contact with the curved surface of the correction roller so as to distribute a uniform
- the position of the correction roller with respect to the frame is
- a method is also provided for ensuring the
- Figure 1 illustrates a perspective view of one embodiment of a correction installation that forms part of a tyre production system.
- Figure 2 is a cross-sectional view of a reinforced rubber layer that is received by the correction
- FIGS 3 and 4 are respective partial and cross- sectional views of the correction installation of
- Figure 5 is a diagram of the passage of the reinforced rubber layer with respect to a correction roller of the correction installation of Figure 1.
- Figure 1 depicts one example of a correction installation 100 that forms part of a tyre production system for producing one or more rubber products that are to be incorporated into one or more vehicle tyres.
- the correction installation 100 is positioned downstream of a calendering unit (not illustrated) and receives a reinforced rubber layer 10 by way of calendered product having a plurality of metallic reinforcements already incorporated therein.
- the calendering is performed by calendering methods that are known in the art of tyre production for producing reinforced rubber layers intended for green tyres.
- the reinforced rubber layer 10 includes a plurality of continuous metallic reinforcements 12 having a common geometry.
- the reinforcements 12, which can include monofilaments or cords, are laid parallel to one another and extend longitudinally between opposite ends of a rubber layer 14. After calendering, the reinforcements 12 should be spaced uniformly with respect to one another and also displaced uniformly in such a way that a centre C12 of each reinforcement remains collinear along a defined longitudinal axis X through a thickness of the rubber layer 14.
- suitable reinforcements include, without limitation, reinforcements made from micro- alloyed carbon steel (0.9% carbon and 0.2% chrome) of UHT type having a breaking strength (Rm) of the order of 3650 MPa (breaking force of 258 N) and a total elongation at break (A t ) of 2.3% (Rm and At being measured under tension in accordance with ISO standard 6892 of 1984) .
- Each reinforcement 12 may be any
- the metallic reinforcements may have any suitable cross-sectional geometry.
- the rubber layer 14 includes a conventional composition for the calendering of tyre belt plies and its thickness may be suited to the belt in which it will be used.
- the rubber layer 14 may be manufactured from a diene rubber, namely from any elastomer that is derived at least in part from a diene monomer. This diene elastomer may be selected from the group
- BRs polybutadienes
- NR natural rubber
- IRs synthetic polyisoprenes
- copolymers are selected from the group consisting of butadiene-styrene copolymers
- SBRs isoprene-butadiene copolymers
- BIRs isoprene-butadiene copolymers
- SIRs isoprene- styrene copolymers
- SBIRs isoprene-butadiene- styrene copolymers
- a rubber composition selected for the rubber layer 14 may contain one or more diene elastomers and one or more additives commonly used in the rubber matrices intended for tyre manufacture.
- additives include, without limitation, carbon black, silica, coupling agents, anti-ageing agents, antioxidants, plasticizers, extension oils, plasticizing resins with a high glass transition temperature (higher than 30°C), agents that facilitate the processing (processability) of the compositions in the raw state, tackifying resins, anti- reversion agents, methylene acceptors and donors, reinforcing resins, known adhesion-promoting systems of the metal salt type, or a crosslinking or vulcanization system.
- a person skilled in the art will know how to adjust the formulation of the rubber composition in order to derive properties desired for a specific tyre.
- the correction installation 100 may be positioned between an upstream roller 20 that feeds the reinforced rubber layer 10 from the calendering unit to the correction
- roller 22 that directs the layer 10 towards another installation that performs a subsequent step in the calendering line (for example, a treatment installation or a storage installation) .
- a production system with rollers 20, 22 is provided by way of example and that the
- correction installation 100 can be adapted for use in existing production systems having different
- the correction installation 100 receives the reinforced rubber layer 10 as a calendered product that passes through the correction installation 100 via a correction device.
- the direction of passage is indicated in Figure 1 by the arrows A.
- the correction device includes a correction roller 106 that is an elongate cylindrical component of predetermined diameter Dio6-
- the diameter D106 is
- the correction roller 106 has a curved surface 106a along the length of which contact is established between the reinforced rubber layer 10 and the curved surface as the layer passes through the correction installation 100.
- the correction roller 106 has a centre C106 through which an axis of rotation of the correction roller is defined.
- the correction roller 106 extends at a
- the position of the correction roller 106 with respect to the frame 109 is adjustable according to the properties of the reinforced rubber layer 10. These properties may include the properties of the materials of the reinforcement 12 and the thickness of the rubber layer 14.
- reinforced rubber layer 10 gradually passes along an offset path through the correction installation 100. With the support of the correction roller 106, the reinforced rubber layer referred to as 10 wraps around the curved surface 106a of the correction roller 106.
- the points of tangency of the rubber layer with respect to the correction roller help to define an angle of wrap ⁇ of the layer. A portion of the rubber layer extending from the points of tangency helps to define an included angle ⁇ . For a given radius of the
- the rubber layer will engage with the curved surface 106a over a contact length Lio.
- the correction roller is positioned in such a way that it guarantees that there will be enough tension on the layer to achieve the correction.
- a roller support 110 which is optional, may support the
- the roller support 110 maintains contact with the curved surface 106a of the correction roller 106 so as to distribute a uniform pressure along the length of the correction roller. In this way, the uniformity of the contact between the correction roller 106 and the entire width of the reinforced rubber layer 10 is ensured.
- the longitudinal and vertical alignment of the reinforcements 12 is ensured in such a way that a maximum tolerance for a displacement Di 2 , measured between each reinforcement centre C 1 2 and the longitudinal axis X of the rubber layer 14, does not exceed a predetermined tolerance for the particular rubber layer when assembled.
- the reinforced rubber layer 10 exhibits a sufficient planarity that
Abstract
The invention relates to a correction installation (100) together with a method for ensuring the planarity of a reinforced rubber layer (10) having continuous metallic reinforcements (12) laid parallel to one another and extending longitudinally between opposite ends of a rubber layer (14). The correction installation (100) includes a correction device that includes a correction roller (106) that is an elongate cylindrical component of predetermined diameter (D106) with a curved surface (106a) along the length of which contact is established between the reinforced layer and the curved surface (106a) as the layer passes through the correction installation (100) so that, during the course of a correction process performed using the correction installation (100), the reinforcements (12) are spaced uniformly with respect to one another and also displaced uniformly in such a way that a centre (C12) of each reinforcement remains collinear along a defined longitudinal axis (X) through a thickness of the rubber layer (14).
Description
PLANARITY OF REINFORCED RUBBER LAYERS
DURING TYRE PRODUCTION
TECHNICAL FIELD
The present invention relates in general to the manufacture of reinforced rubber layers and of vehicle tyres manufactured therewith. More particularly, the present invention relates to the conservation of planarity in continuous reinforced rubber layers prior to final building of the green tyre.
CONTEXT
For tyre manufacturers, efforts aimed at reducing tyre mass have included reducing the thickness of tyre belts made up of multiple plies or layers. Following such efforts, reinforced rubber layers provided for a tyre belt exhibit in a known manner one or more
continuous metal reinforcements (or "reinforcements" or "continuous metallic reinforcements") . Tyres produced with such layers exhibit lower weight and improved rolling resistance. Examples of tyres including such reinforced rubber layers are disclosed in patent publications by the same assignee, WO2015/014574, WO2015/014575, and WO2013/117476.
In order to produce reinforced rubber layers, it is known practice to calender the metal reinforcements between two skim layers of unvulcanized rubber so that reinforced rubber layers are produced. When the green tyre is being built, the resulting layers are cut to the desired size and assembled to form a green tyre. The layers offered for tyre building often exhibit a lack of uniformity or a lack of planarity that can be attributed to the curvature of the metal reinforcements
(for example, as demonstrated by the shifting of at least part of one reinforcement with respect to other reinforcements and with respect to the thickness of the rubber) . This curvature may be attributed to numerous causes including, without limitation, a residual torsion in the reinforcement itself and an incorrect orientation of the reinforcements ahead of the
calendering unit. The resulting lack of uniformity makes it difficult to align the reinforcements in adjacent layers during tyre building.
The new materials require increasingly rigid reinforcements, necessitating improvements to material planarity . SUMMARY
One effective proposed solution involves
additional plastic deformation of the reinforced rubber layer and, therefore, of the reinforcement, in a direction that is the opposite to that of the observed curvature. Such a solution is easily implemented in an existing tyre production plant without the need to change the overall operation of the plant.
The present invention relates to a correction installation for ensuring the planarity of a rubber layer reinforced with continuous metallic
reinforcements laid parallel to one another and
extending longitudinally between opposite ends of a rubber layer. The correction installation includes a correction device having a correction roller. This correction roller is an elongate cylindrical component of predetermined diameter with a curved surface along the length of which contact is established between the reinforced rubber layer and the curved surface as the
layer passes through the correction installation so that, during the course of a correction process performed by the correction installation, the
reinforcements are spaced uniformly with respect to one another and are also displaced uniformly in such a way that a centre of each reinforcement remains collinear along a defined longitudinal axis through a thickness of the rubber layer.
The correction roller has a centre through which an axis of rotation of the correction roller is defined. The correction roller extends at a
perpendicular angle and rotates about its axis of rotation with respect to a frame supporting the
correction roller.
In certain embodiments, the correction
installation is positioned between an upstream roller that feeds the reinforced rubber layer to the
correction installation and a downstream roller that directs the reinforced rubber layer towards another installation that performs a subsequent step in a calendering line.
In certain embodiments, the correction
installation further includes a roller support that maintains contact with the curved surface of the correction roller so as to distribute a uniform
pressure along the length of the correction roller.
In certain embodiments, the position of the correction roller with respect to the frame is
adj ustable .
A method is also provided for ensuring the
planarity of a reinforced rubber layer.
Further aspects of the present invention will become obvious from reading the following detailed
description .
BRIEF DESCRIPTION OF THE DRAWINGS
The nature and various advantages of the present invention will be better understood from reading the following detailed description, and from studying the attached drawings, in which the same reference numerals identify identical elements throughout, and in which:
Figure 1 illustrates a perspective view of one embodiment of a correction installation that forms part of a tyre production system.
Figure 2 is a cross-sectional view of a reinforced rubber layer that is received by the correction
installation of Figure 1.
Figures 3 and 4 are respective partial and cross- sectional views of the correction installation of
Figure 1.
Figure 5 is a diagram of the passage of the reinforced rubber layer with respect to a correction roller of the correction installation of Figure 1.
DETAILED DESCRIPTION
Detailed reference will now be made to embodiments of the invention, one or more examples of which are illustrated in the drawings. Each example is given for the purposes of explaining, rather than limiting, the invention described. Thus, provision is made for the invention to cover these modifications and alternative forms in so far as they fall within the scope of the attached claims and equivalents thereof.
With reference now to the figures, in which the same numerals identify identical elements, Figure 1 depicts one example of a correction installation 100 that forms part of a tyre production system for
producing one or more rubber products that are to be incorporated into one or more vehicle tyres. The correction installation 100 is positioned downstream of a calendering unit (not illustrated) and receives a reinforced rubber layer 10 by way of calendered product having a plurality of metallic reinforcements already incorporated therein. The calendering is performed by calendering methods that are known in the art of tyre production for producing reinforced rubber layers intended for green tyres.
As can be seen also from Figure 2, the reinforced rubber layer 10 includes a plurality of continuous metallic reinforcements 12 having a common geometry. The reinforcements 12, which can include monofilaments or cords, are laid parallel to one another and extend longitudinally between opposite ends of a rubber layer 14. After calendering, the reinforcements 12 should be spaced uniformly with respect to one another and also displaced uniformly in such a way that a centre C12 of each reinforcement remains collinear along a defined longitudinal axis X through a thickness of the rubber layer 14.
Examples of suitable reinforcements include, without limitation, reinforcements made from micro- alloyed carbon steel (0.9% carbon and 0.2% chrome) of UHT type having a breaking strength (Rm) of the order of 3650 MPa (breaking force of 258 N) and a total elongation at break (At) of 2.3% (Rm and At being measured under tension in accordance with ISO standard 6892 of 1984) . Each reinforcement 12 may be any
individual steel reinforcement that has an extent in cross section (diameter or thickness) that exceeds 100 ym. The metallic reinforcements may have any suitable
cross-sectional geometry.
The rubber layer 14 includes a conventional composition for the calendering of tyre belt plies and its thickness may be suited to the belt in which it will be used. The rubber layer 14 may be manufactured from a diene rubber, namely from any elastomer that is derived at least in part from a diene monomer. This diene elastomer may be selected from the group
consisting of polybutadienes (BRs) , natural rubber (NR) , synthetic polyisoprenes (IRs), butadiene
copolymers, isoprene copolymers and blends of these elastomers, such copolymers being selected from the group consisting of butadiene-styrene copolymers
(SBRs) , isoprene-butadiene copolymers (BIRs) , isoprene- styrene copolymers (SIRs) and isoprene-butadiene- styrene copolymers (SBIRs) .
A rubber composition selected for the rubber layer 14 may contain one or more diene elastomers and one or more additives commonly used in the rubber matrices intended for tyre manufacture. Such additives include, without limitation, carbon black, silica, coupling agents, anti-ageing agents, antioxidants, plasticizers, extension oils, plasticizing resins with a high glass transition temperature (higher than 30°C), agents that facilitate the processing (processability) of the compositions in the raw state, tackifying resins, anti- reversion agents, methylene acceptors and donors, reinforcing resins, known adhesion-promoting systems of the metal salt type, or a crosslinking or vulcanization system. A person skilled in the art will know how to adjust the formulation of the rubber composition in order to derive properties desired for a specific tyre.
Referring once again to Figure l,the correction
installation 100 may be positioned between an upstream roller 20 that feeds the reinforced rubber layer 10 from the calendering unit to the correction
installation and a downstream roller 22 that directs the layer 10 towards another installation that performs a subsequent step in the calendering line (for example, a treatment installation or a storage installation) . It is understood that a production system with rollers 20, 22 is provided by way of example and that the
correction installation 100 can be adapted for use in existing production systems having different
configurations .
Referring once again to Figure 1 and also to
Figures 3 and 4, the correction installation 100 receives the reinforced rubber layer 10 as a calendered product that passes through the correction installation 100 via a correction device. The direction of passage is indicated in Figure 1 by the arrows A.
The correction device includes a correction roller 106 that is an elongate cylindrical component of predetermined diameter Dio6- The diameter D106 is
selected according to the properties of the materials of the reinforcement 12. The correction roller 106 has a curved surface 106a along the length of which contact is established between the reinforced rubber layer 10 and the curved surface as the layer passes through the correction installation 100.
The correction roller 106 has a centre C106 through which an axis of rotation of the correction roller is defined. The correction roller 106 extends at a
perpendicular angle and rotates about its axis of rotation with respect to a frame 109 supporting the correction roller. The position of the correction
roller 106 with respect to the frame 109 is adjustable according to the properties of the reinforced rubber layer 10. These properties may include the properties of the materials of the reinforcement 12 and the thickness of the rubber layer 14.
Referring again to Figure 4 and also to Figure 5, an angular relationship is illustrated with respect to the deformation of the reinforcements 12 as the
reinforced rubber layer 10 gradually passes along an offset path through the correction installation 100. With the support of the correction roller 106, the reinforced rubber layer referred to as 10 wraps around the curved surface 106a of the correction roller 106. The points of tangency of the rubber layer with respect to the correction roller help to define an angle of wrap Θ of the layer. A portion of the rubber layer extending from the points of tangency helps to define an included angle β. For a given radius of the
correction roller 106 and a given angle β, the rubber layer will engage with the curved surface 106a over a contact length Lio. The correction roller is positioned in such a way that it guarantees that there will be enough tension on the layer to achieve the correction.
Referring again to Figures 3 and 4, a roller support 110, which is optional, may support the
correction roller 106 in a position such that the reinforced rubber layer 10 wraps uniformly around the curved surface 106a. In one embodiment, the roller support 110 maintains contact with the curved surface 106a of the correction roller 106 so as to distribute a uniform pressure along the length of the correction roller. In this way, the uniformity of the contact between the correction roller 106 and the entire width
of the reinforced rubber layer 10 is ensured.
Referring once again to Figure 2, during a
correction process performed using the correction installation 100, the longitudinal and vertical alignment of the reinforcements 12 is ensured in such a way that a maximum tolerance for a displacement Di2, measured between each reinforcement centre C12 and the longitudinal axis X of the rubber layer 14, does not exceed a predetermined tolerance for the particular rubber layer when assembled. Upon leaving the
correction installation 100, the reinforced rubber layer 10 exhibits a sufficient planarity that
facilitates its assembly with another layer during subsequent steps in the tyre production, this assembly no longer being impeded by offsets between one or more metallic reinforcement ( s ) at the extremities of adjacent rubber layers.
The terms "at least one" and "one or more" are used interchangeably. The ranges given as lying
"between a and b" encompass the values of "a" and "b".
Although particular embodiments of the disclosed apparatus have been illustrated and described, it will be appreciated that various changes, additions and modifications can be made without departing from either the spirit or scope of the present description.
Therefore, no limitation should be imposed on the scope of the invention described, apart from those set out in the appended claims.
Claims
1. A correction installation (100) for ensuring the planarity of a reinforced rubber layer (10) reinforced with continuous metallic reinforcements (12) laid parallel to one another and extending longitudinally between opposite ends of a rubber layer (14), in which the correction installation (100) comprises a
correction device that includes a correction roller (106), such correction roller being an elongate
cylindrical component of predetermined diameter (ϋιοε) with a curved surface (106a) along which a length of contact is established between the reinforced rubber layer (10) and the curved surface (106a) as the layer passes through the correction installation (100) so that, during the course of a correction process
performed using the correction installation ( 100 ) , the reinforcements (12) are spaced uniformly with respect to one another and are also displaced uniformly in such a way that a centre (C12) of each reinforcement remains collinear along a defined longitudinal axis (X) through a thickness of the rubber layer (14) .
2. The correction installation (100) of claim 1, in which :
the correction roller (106) has a centre (C106) through which an axis of rotation of the correction roller (106) is defined; and
the correction roller (106) extends at a
perpendicular angle and rotates about its axis of rotation with respect to a frame (109) supporting the correction roller (106).
3. The correction installation (100) of either one of
- li the preceding claims, in which the correction
installation (100) is positioned between an upstream roller (20) that feeds the reinforced rubber layer (10) to the correction installation (100) and a downstream roller (22) that directs the reinforced rubber layer (10) towards another installation that performs a subsequent step in a calendering line.
4. The correction installation (100) of any one of the preceding claims, further comprising a roller support (110) which maintains contact with the curved surface (106a) of the correction roller (106) so as to distribute a uniform pressure along the length of the correction roller (106).
5. The correction installation (100) of any one of the preceding claims, in which the position of the correction roller (106) with respect to the frame (109) is adjustable.
6. A method for ensuring the planarity of a
reinforced rubber layer (10) with continuous metallic reinforcements ( 12 ) , the method comprising the following steps :
in a tyre production system, providing a
correction installation (100) according to any one of claims 1 to 5;
from an upstream calendering unit, receiving the reinforced rubber layer (10) at the correction
installation (100); and
passing the reinforced rubber layer (10) through the correction installation (100) so that, during the course of a correction process performed by the
correction installation (100), the reinforcements (12) are spaced uniformly with respect to one another and are also displaced uniformly in such a way that a centre (C12) of each reinforcement remains collinear along a defined longitudinal axis (X) through a thickness of the rubber layer.
7. The method of claim 6, further comprising the step of feeding the reinforced rubber layer (10) from calendering unit towards the correction installation (100) .
8. The method of claim 7, further comprising the step of directing the reinforced rubber layer (10) from the correction installation (100) to an installation that performs a subsequent step in a calendering line.
9. The method of claim 8, in which the
installation that performs a subsequent step
calendering line is selected from a treatment
installation and a storage installation.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP18702170.4A EP3576931A1 (en) | 2017-01-31 | 2018-01-22 | Planarity of reinforced rubber layers during tyre production |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1750761 | 2017-01-31 | ||
FR1750761A FR3062338A1 (en) | 2017-01-31 | 2017-01-31 | PLANEITE OF RUBBER NAPPES STRENGTHENED DURING THE PRODUCTION OF PNEUMATIC TIRES |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2018141566A1 true WO2018141566A1 (en) | 2018-08-09 |
Family
ID=58707724
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2018/051436 WO2018141566A1 (en) | 2017-01-31 | 2018-01-22 | Planarity of reinforced rubber layers during tyre production |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3576931A1 (en) |
FR (1) | FR3062338A1 (en) |
WO (1) | WO2018141566A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2022018341A1 (en) | 2020-07-24 | 2022-01-27 | Compagnie Generale Des Etablissements Michelin | Heat treatment of a reinforcement element |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0693448A2 (en) * | 1994-07-19 | 1996-01-24 | Karl Eugen Fischer GmbH Maschinenfabrik | Automatic cord strip transfer device |
KR20090010063U (en) * | 2008-03-31 | 2009-10-06 | 금호타이어 주식회사 | Press Roller Mechanism of belt servicer |
WO2013117476A1 (en) | 2012-02-09 | 2013-08-15 | Compagnie Generale Des Etablissements Michelin | Radial tyre with lightened belt structure |
WO2014155258A1 (en) * | 2013-03-28 | 2014-10-02 | Pirelli Tyre S.P.A. | Process and apparatus for manufacturing tyres for vehicle wheels |
WO2015014575A1 (en) | 2013-07-30 | 2015-02-05 | Compagnie Generale Des Etablissements Michelin | Radial tyre having a lightweight belt structure |
WO2015014574A1 (en) | 2013-07-30 | 2015-02-05 | Compagnie Generale Des Etablissements Michelin | Radial tyre having a lightweight belt structure |
-
2017
- 2017-01-31 FR FR1750761A patent/FR3062338A1/en active Pending
-
2018
- 2018-01-22 WO PCT/EP2018/051436 patent/WO2018141566A1/en unknown
- 2018-01-22 EP EP18702170.4A patent/EP3576931A1/en not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0693448A2 (en) * | 1994-07-19 | 1996-01-24 | Karl Eugen Fischer GmbH Maschinenfabrik | Automatic cord strip transfer device |
KR20090010063U (en) * | 2008-03-31 | 2009-10-06 | 금호타이어 주식회사 | Press Roller Mechanism of belt servicer |
WO2013117476A1 (en) | 2012-02-09 | 2013-08-15 | Compagnie Generale Des Etablissements Michelin | Radial tyre with lightened belt structure |
WO2014155258A1 (en) * | 2013-03-28 | 2014-10-02 | Pirelli Tyre S.P.A. | Process and apparatus for manufacturing tyres for vehicle wheels |
WO2015014575A1 (en) | 2013-07-30 | 2015-02-05 | Compagnie Generale Des Etablissements Michelin | Radial tyre having a lightweight belt structure |
WO2015014574A1 (en) | 2013-07-30 | 2015-02-05 | Compagnie Generale Des Etablissements Michelin | Radial tyre having a lightweight belt structure |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2022018341A1 (en) | 2020-07-24 | 2022-01-27 | Compagnie Generale Des Etablissements Michelin | Heat treatment of a reinforcement element |
FR3112714A1 (en) | 2020-07-24 | 2022-01-28 | Compagnie Generale Des Etablissements Michelin | Heat treatment of a reinforcing element |
Also Published As
Publication number | Publication date |
---|---|
EP3576931A1 (en) | 2019-12-11 |
FR3062338A1 (en) | 2018-08-03 |
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