EP3500698A1 - Reinforcement layer for a pneumatic vehicle tyre, preferably for a belt bandage layer of a pneumatic vehicle tyre - Google Patents

Reinforcement layer for a pneumatic vehicle tyre, preferably for a belt bandage layer of a pneumatic vehicle tyre

Info

Publication number
EP3500698A1
EP3500698A1 EP16813351.0A EP16813351A EP3500698A1 EP 3500698 A1 EP3500698 A1 EP 3500698A1 EP 16813351 A EP16813351 A EP 16813351A EP 3500698 A1 EP3500698 A1 EP 3500698A1
Authority
EP
European Patent Office
Prior art keywords
polyamide
pneumatic vehicle
multifilament yarn
reinforcement
layer
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.)
Pending
Application number
EP16813351.0A
Other languages
German (de)
French (fr)
Inventor
Wolfgang Reese
Thomas Kramer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Continental Reifen Deutschland GmbH
Original Assignee
Continental Reifen Deutschland GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Continental Reifen Deutschland GmbH filed Critical Continental Reifen Deutschland GmbH
Publication of EP3500698A1 publication Critical patent/EP3500698A1/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
    • B60C9/0042—Reinforcements made of synthetic materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
    • D01F6/60—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyamides
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/44—Yarns or threads characterised by the purpose for which they are designed
    • D02G3/48—Tyre cords
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
    • B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
    • B60C9/20—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
    • B60C9/22—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel the plies being arranged with all cords disposed along the circumference of the tyre
    • B60C2009/2252—Physical properties or dimension of the zero degree ply cords
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
    • B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
    • B60C9/20—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
    • B60C9/22—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel the plies being arranged with all cords disposed along the circumference of the tyre
    • B60C2009/2252—Physical properties or dimension of the zero degree ply cords
    • B60C2009/2257—Diameters of the cords; Linear density thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
    • B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
    • B60C9/20—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
    • B60C9/22—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel the plies being arranged with all cords disposed along the circumference of the tyre
    • B60C2009/2252—Physical properties or dimension of the zero degree ply cords
    • B60C2009/2276—Tensile strength
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
    • B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
    • B60C9/20—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
    • B60C9/22—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel the plies being arranged with all cords disposed along the circumference of the tyre
    • B60C2009/2252—Physical properties or dimension of the zero degree ply cords
    • B60C2009/2285—Twist structures
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
    • D10B2331/02—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyamides

Definitions

  • the invention relates to a reinforcing ply for a pneumatic vehicle tire, preferably for a belt bandage ply of a pneumatic vehicle tire, wherein the reinforcing ply comprises reinforcements with at least one multifilament yarn and wherein said at least one multifilament yarn consists of polyamide which is largely based on renewable raw materials.
  • Such a reinforcing layer is known from DE 10 2010 017 786 AI. to
  • Polyamide 10.10 represents a polycondensation product of 1,10-cecethylenediamine and 1,10-decanedioic acid, both monomers being obtained from castor oil. Thus, polyamide 10.10 is based 100% on natural, renewable resources and not on petroleum.
  • Reinforcement layers for pneumatic vehicle tires and their strength members are known to those skilled in construction and material in various designs.
  • yarns or cords are used in the bead area, as carcass material, for belt layers and as a belt bandage.
  • the yarns or cords are embedded in a rubber compound during the manufacture of the tires to be rubberized
  • Reinforcements can be used in the tire.
  • the belt bandage is used in pneumatic vehicle tires, especially when
  • Bead region extends and there is usually anchored by wrapping tensile bead cores, having a radially outer, tread grooves having rubber tread and a belt between the rubber tread and the carcass, arranged between the belt and tread.
  • the belt bandage can be formed in one or more layers, covers at least the belt edges and contains parallel and substantially in
  • Circumferentially extending reinforcements in the form of cords which in a
  • Rubber compound are embedded.
  • the belt bandage is embedded in an unvulcanized rubber compound in the form of layers during tire production
  • Reinforcements applied which are wound or spooled on the belt.
  • the reinforcements are embedded in rubber for such layers by a calender in the longitudinal direction a calender of substantially parallel filiform reinforcing materials, which are usually pretreated with a thermal impregnation and / or for better adhesion to the embedding rubber in the known manner or pass through an extruder to coat with the rubber compound.
  • the tire usually extends in the shoulder area by the survey by up to 2% and in the center region by up to 4% compared to the unvulcanized blank when the blank is wound on a flat drum.
  • the strength element which is used in the belt bandage
  • polyamide 10.10 is resource-saving, because it can be obtained from 100% natural renewable raw materials, the properties of a reinforcing material are not
  • Polyamide 10.10 in the belt bandage position of a pneumatic vehicle tire could be improved.
  • Two properties of the reinforcement are hereby particularly desirable: on the one hand, the polyamide material should be sufficiently stretchable that an advantageously high shrinkage is obtainable, on the other hand, the module should be in an advantageously high range.
  • Polyamide 10.10 which has long and soft chains in the acid and diamine content, is comparatively well stretchable and therefore has a desired high shrinkage, but a comparatively disadvantageously low modulus.
  • Polyamide 6.6 has in the acid and diamine average chain lengths, is also still stretchable well and therefore has a still suitable shrinkage and a suitable module, but is not umwind- and resource-friendly to produce.
  • Polyamide 4.4 is relatively poor drawable due to its small chain lengths in the acid and diamine, therefore, has a rather disadvantageous low shrinkage, but an advantageous high modulus.
  • the invention is based on the object, a reinforcing layer with reinforcements for a pneumatic vehicle tire, preferably for a belt bandage position of a
  • the multifilament yarn consists of polyamide 4.10.
  • a multi-filament yarn consisting of polyamide 4.10 is created, which is partially biobased.
  • One monomer of the two monomers of polyamide 4.10 is largely based on renewable raw materials and not on crude oil, making it environmentally friendly and resource-friendly.
  • Polyamides are polycondensation products of dicarboxylic acids and diamines.
  • An economically important dicarboxylic acid is sebacic acid, which is produced, for example, from castor oil obtained from the seeds of the Rizinzussstaude.
  • the "10s" component of polyamide 4.10 is based on sabacic acid.
  • the eco-friendly character is further emphasized by the fact that the caster grows under conditions in which it does not compete with other crops.
  • polyamide 4.10 fibers have a constant quality compared to natural fibers and can be produced as continuous fibers. Thus, a consistent product quality can be ensured and the processing reliability is given.
  • Polyamide 4.10 is characterized by a polymer structure which is well stretchable and has a suitably high shrinkage with a suitable module. Compared to the other polyamides polyamide 4.10 thus represents a good compromise between shrink and modulus, which is particularly suitable for use as a strength carrier in a belt bandage position.
  • polyamide 4.10 is characterized by a low water absorption capacity, whereby the good properties, such as the breaking strength, even when exposed to moisture.
  • polyamide 4.10 has a great similarity to polyamide 6.6, which is frequently used in reinforcing layers. In this way, an easy replacement of polyamide 6.6 (PA 6.6) by polyamide 4.10 (PA 4.10) while maintaining, for example, the adhesive system used is possible.
  • the values are measured on an untwisted yarn.
  • the shrinkage is determined according to ASTM D885 and ASTM D4974.
  • the force-strain data are determined according to ASTM D855M.
  • the strength member is a cord twisted from at least two twisted multifilament yarns.
  • Multifilamentgarnes or the Cordes is achieved an improved fatigue strength of the strength member compared to untwisted reinforcements. It is expedient if the multifilament yarn has a fineness of 100 to 5000 dtex and a twist of 100 to 600 t / m. Such multifilament yarns are easy to produce and are suitable for use as a strength carrier in
  • the cord consists of 2 or 3 endverglassten Multifilamentgamen.
  • all multifilament yarns of the cord are made of polyamide 4.10.
  • a multifilament yarn of the cord does not consist of polyamide 4.10.
  • at least one multifilament yarn of the cord does not consist of polyamide 4.10. It is then a so-called hybrid cord. This is then based at least partially on renewable raw materials, is designed to save resources and offers the further advantage of the possibility of defined setting of the cord by a targeted selection of materials not existing polyamide 4.10 Games.
  • the invention also relates to a pneumatic vehicle tire having a reinforcing ply according to a reinforcing ply configured above.
  • Reinforcement layer is a belt bandage layer or a bead reinforcement such as a chipper or a pinball machine.
  • Pneumatic vehicle tires are mass-produced products where the partial replacement of petroleum-based materials with non-petroleum materials leads to a particularly significant resource conservation effect. It has also been shown that
  • a car tire may have a belt bandage layer of cords of the following construction:
  • Variant A construction / material: 1400x1 / polyamide 4.10
  • Variant B construction / material: 940x2 / polyamide 4.10
  • the yarn twist is equal to the cord rotation, only in the opposite direction.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Tires In General (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Artificial Filaments (AREA)

Abstract

The invention relates to a reinforcement layer for a pneumatic vehicle tyre, preferably for a belt bandage layer of a vehicle pneumatic tyre, wherein the reinforcement layer comprises reinforcing supports with at least one multifilament yarn, and wherein said at least one multifilament yarn consists of polyamide, most of which is based on renewable raw materials. In order to preserve the environment and the resources in combination with improved product quality, the multifilament yarn is made of polyamide 4.10.

Description

Beschreibung  description
Verstärkungslage für einen Fahrzeugluftreifen, vorzugweise für eine Reinforcement for a pneumatic vehicle tire, preferably for a
Gürtelbandagenlage eines Fahrzeugluftreifens Die Erfindung betrifft eine Verstärkungslage für einen Fahrzeugluftreifen, vorzugsweise für eine Gürtelbandagenlage eines Fahrzeugluftreifens, wobei die Verstärkungslage Festigkeitsträger mit wenigstens einem Multifilamentgarn aufweist und wobei dieses wenigstens ein Multifilamentgarn aus Polyamid besteht, welches zum Großteil auf nachwachsenden Rohstoffen basiert. The invention relates to a reinforcing ply for a pneumatic vehicle tire, preferably for a belt bandage ply of a pneumatic vehicle tire, wherein the reinforcing ply comprises reinforcements with at least one multifilament yarn and wherein said at least one multifilament yarn consists of polyamide which is largely based on renewable raw materials.
Eine derartige Verstärkungslage ist aus der DE 10 2010 017 786 AI bekannt. Zur Such a reinforcing layer is known from DE 10 2010 017 786 AI. to
Schonung von Umwelt und Ressourcen bei guter Produktqualität wird ein Festigkeitsträger in der Verstärkungslage eingesetzt, welcher Polyamid 10.10 enthält. Polyamid 10.10 stellt ein Polykondensationsprodukt aus 1,10-Cecamenthylendiamin und 1,10-Decandisäure dar, wobei beide Monomere aus Rizinusöl gewonnen werden. Damit basiert Polyamid 10.10 zu 100% auf natürlichen, nachwachsenden Rohstoffen und nicht auf Erdöl. Protection of the environment and resources with good product quality is a strength carrier used in the reinforcement layer containing polyamide 10.10. Polyamide 10.10 represents a polycondensation product of 1,10-cecethylenediamine and 1,10-decanedioic acid, both monomers being obtained from castor oil. Thus, polyamide 10.10 is based 100% on natural, renewable resources and not on petroleum.
Verstärkungslagen für Fahrzeugluftreifen und deren Festigkeitsträger sind dem Fachmann in Aufbau und Material in unterschiedlichsten Ausführungen bekannt. Reinforcement layers for pneumatic vehicle tires and their strength members are known to those skilled in construction and material in various designs.
Bei Fahrzeugluftreifen werden Garne oder Corde im Wulstbereich, als Karkassmaterial, für Gürtellagen und als Gürtelbandage eingesetzt. Die Garne oder Corde werden während der Herstellung der Reifen in eine Kautschukmischung eingebettet, um als gummierte In pneumatic vehicle tires, yarns or cords are used in the bead area, as carcass material, for belt layers and as a belt bandage. The yarns or cords are embedded in a rubber compound during the manufacture of the tires to be rubberized
Festigkeitsträgerlage im Reifen eingesetzt werden zu können. Reinforcements can be used in the tire.
Die Gürtelbandage dient bei Fahrzeugluftreifen, insbesondere beim The belt bandage is used in pneumatic vehicle tires, especially when
Hochgeschwindigkeitseinsatz, dazu, eine Erhebung des Reifens durch die im Fahrbetrieb auftretenden Fliehkräfte zu verhindern. Sie ist bei einem Fahrzeugluftreifen, welcher im Allgemeinen eine luftundurchlässige Innenschicht, eine Festigkeitsträger enthaltende Radialkarkasse, die vom Zenitbereich des Reifens über die Seitenwände bis in den High-speed use, in addition, a survey of the tire by the driving prevent centrifugal forces occurring. It is in a vehicle pneumatic tire, which is generally an air-impermeable inner layer, a strength carrier-containing radial carcass, from the zenith of the tire on the side walls to the
Wulstbereich reicht und dort meist durch Umschlingen zugfester Wulstkerne verankert ist, einen radial außen befindlichen, Profilrillen aufweisenden Gummilaufstreifen und einen Gürtel zwischen dem Gummilaufstreifen und der Karkasse aufweist, zwischen Gürtel und Laufstreifen angeordnet. Die Gürtelbandage kann ein- oder mehrlagig ausgebildet sein, deckt zumindest die Gürtelränder ab und enthält parallel und im Wesentlichen in Bead region extends and there is usually anchored by wrapping tensile bead cores, having a radially outer, tread grooves having rubber tread and a belt between the rubber tread and the carcass, arranged between the belt and tread. The belt bandage can be formed in one or more layers, covers at least the belt edges and contains parallel and substantially in
Umfangsrichtung verlaufende Festigkeitsträger in Form von Corden, die in eine Circumferentially extending reinforcements in the form of cords, which in a
Kautschukmischung eingebettet sind. Die Gürtelbandage wird bei der Reifenherstellung in Form von Lagen mit in eine unvulkanisierte Kautschukmischung eingebetteten Rubber compound are embedded. The belt bandage is embedded in an unvulcanized rubber compound in the form of layers during tire production
Festigkeitsträgern aufgebracht, die auf den Gürtel gewickelt oder gespult werden. Die Festigkeitsträger werden für solche Lagen in Kautschuk eingebettet, indem eine Schar von im Wesentlichen parallel liegenden fadenförmigen Festigkeitsträgern, die in der Regel thermisch und/oder zur besseren Haftung am einbettenden Gummi in dem Fachmann bekannter Art mit einer Imprägnierung vorbehandelt sind, in Längsrichtung einen Kalander oder einen Extruder zur Ummantelung mit der Kautschukmischung durchlaufen. Bei der Bombage mit bisher im Einsatz befindlichen Reifenaufbauvorrichtungen und der Reinforcements applied, which are wound or spooled on the belt. The reinforcements are embedded in rubber for such layers by a calender in the longitudinal direction a calender of substantially parallel filiform reinforcing materials, which are usually pretreated with a thermal impregnation and / or for better adhesion to the embedding rubber in the known manner or pass through an extruder to coat with the rubber compound. In the bombing with previously used tire building devices and the
Vulkanisation des Reifens dehnt sich der Reifen in der Regel im Schulterbereich durch die Erhebung um bis zu 2 % und im Mittenbereich um bis zu 4 % im Vergleich zum unvulkanisierten Rohling, wenn der Rohling auf einer flachen Trommel gewickelt wird. Somit soll der Festigkeitsträger, welcher in der Gürtelbandage eingesetzt ist, Vulcanization of the tire, the tire usually extends in the shoulder area by the survey by up to 2% and in the center region by up to 4% compared to the unvulcanized blank when the blank is wound on a flat drum. Thus, the strength element, which is used in the belt bandage,
vorteilhafterweise diese Erhebung erlauben, aber ebenfalls während der Vulkanisation des Reifens ein geeignetes Schrumpfverhalten aufweisen, um zumindest die Gürtelränder niederzudrücken. advantageously allow this survey, but also during the vulcanization of the tire have a suitable shrinkage behavior to depress at least the belt edges.
Bisher werden als Materialien für Festigkeitsträger in Verstärkungslagen, insbesondere in Gürtelbandagen von Fahrzeugluftreifen, einerseits primär (unmittelbar) auf fossilen Rohstoffen (auf Erdöl) basierende textile Festigkeitsträger, wie beispielsweise PET (Polyethylenterephthalat), Aramid und Nylon oder Hybridkorde aus deren Garnen eingesetzt. Andererseits ist es bekannt, nicht-erdölbasierte textile Festigkeitsträger aus Rayon oder Lyocell einzusetzen. Dies sind Chemiefasern aus natürlichen Polymeren, nämlich Cellulose. So far, as materials for reinforcements in reinforcing layers, especially in belt bandages of pneumatic vehicle tires, on the one hand primarily (directly) based on fossil fuels (petroleum) based textile reinforcements, such as PET (polyethylene terephthalate), aramid and nylon or hybrid cords from their yarns. On the other hand, it is known that non-petroleum-based textile reinforcement Use rayon or lyocell. These are chemical fibers made from natural polymers, namely cellulose.
Zur Schonung von Umwelt und Ressourcen ist man bestrebt, den Anteil an Rohstoffen, die auf Erdöl basieren, wie Synthesefasern, in Elastomerprodukten zu reduzieren. Dabei sollen aber gleichzeitig die vom Produkt geforderten Eigenschaften nicht beeinträchtigt werden. To protect the environment and resources, efforts are being made to reduce the proportion of crude oil-based raw materials, such as synthetic fibers, in elastomer products. At the same time, however, the properties required by the product should not be impaired.
Der Einsatz von Naturfasern wie Baumwolle in der Gummiindustrie wird allerdings dadurch eingeschränkt, dass sie keine endlose Faserstruktur und eine stark schwankende Faserqualität aufweisen. Das fehlende Schrumpfverhalten von Naturfasern macht sie zudem ungeeignet für den Einsatz als Festigkeitsträger in Gürtelbandagen von However, the use of natural fibers such as cotton in the rubber industry is limited by the fact that they do not have an endless fiber structure and a widely varying fiber quality. The lack of shrinkage behavior of natural fibers also makes them unsuitable for use as reinforcement in belt bandages
Fahrzeugluftreifen . Pneumatic vehicle tires.
Polyamid 10.10 ist zwar ressourcenschonend, da zu 100% aus natürlichen nachwachsenden Rohstoffen gewinnbar, jedoch sind die Eigenschaften eines Festigkeitsträgers aus Although polyamide 10.10 is resource-saving, because it can be obtained from 100% natural renewable raw materials, the properties of a reinforcing material are not
Polyamid 10.10 in der Gürtelbandagenlage eines Fahrzeugluftreifens verbesserungswürdig. Zwei Eigenschaften des Festigkeitsträgers sind hierbei besonders erwünscht: einerseits soll das Polyamidmaterial derart gut verstreckbar sein, dass ein vorteilhafter hoher Schrumpf erhaltbar ist, andererseits soll der Modul in einem vorteilhaft hohen Bereich liegen.  Polyamide 10.10 in the belt bandage position of a pneumatic vehicle tire could be improved. Two properties of the reinforcement are hereby particularly desirable: on the one hand, the polyamide material should be sufficiently stretchable that an advantageously high shrinkage is obtainable, on the other hand, the module should be in an advantageously high range.
Polyamid 10.10, welches im Säure- und Diaminanteil lange und weiche Ketten aufweist, ist vergleichsweise gut verstreckbar und weist daher einen erwünschten hohen Schrumpf, jedoch einen vergleichsweise nachteilig geringen Modul auf. Polyamide 10.10, which has long and soft chains in the acid and diamine content, is comparatively well stretchable and therefore has a desired high shrinkage, but a comparatively disadvantageously low modulus.
Polyamid 6.6 weist im Säure- und Diaminanteil mittlere Kettenlängen auf, ist ebenfalls noch gut verstreckbar und weist daher einen noch geeigneten Schrumpf und einen geeigneten Modul auf, ist aber nicht umweit- und ressourcenschonend herstellbar.  Polyamide 6.6 has in the acid and diamine average chain lengths, is also still stretchable well and therefore has a still suitable shrinkage and a suitable module, but is not umwind- and resource-friendly to produce.
Polyamid 4.4 ist aufgrund seiner geringen Kettenlängen im Säure- und Diaminanteil vergleichsweise schlecht verstreckbar, weist daher einen eher nachteiligen geringen Schrumpf, jedoch einen vorteilhaften hohen Modul auf. Der Erfindung liegt die Aufgabe zu Grunde, eine Verstärkungslage mit Festigkeitsträgern für einen Fahrzeugluftreifen, vorzugsweise für eine Gürtelbandagenlage eines Polyamide 4.4 is relatively poor drawable due to its small chain lengths in the acid and diamine, therefore, has a rather disadvantageous low shrinkage, but an advantageous high modulus. The invention is based on the object, a reinforcing layer with reinforcements for a pneumatic vehicle tire, preferably for a belt bandage position of a
Fahrzeugluftreifens zur Verfügung zu stellen, deren Multifilamentgarne aus Polyamid umweit- und ressourcenschonend sind und durch welche das Produkt in Bezug auf seine Qualität weiter verbessert ist. To provide pneumatic tires available whose multifilament yarns made of polyamide are environment-friendly and resource-saving and by which the product is further improved in terms of its quality.
Gelöst wird die Aufgabe erfindungsgemäß dadurch, dass das Multifilamentgarn aus Polyamid 4.10 besteht. Hierdurch ist ein aus Polyamid 4.10 bestehendes Multifilamentgarn geschaffen, welches teil-biobasiert ist. Ein Monomer der beiden Monomere des Polyamid 4.10 basiert zum Großteil auf nachwachsenden Rohstoffen und nicht auf Erdöl und ist damit umweit- und ressourcenfreundlich. The object is achieved according to the invention in that the multifilament yarn consists of polyamide 4.10. As a result, a multi-filament yarn consisting of polyamide 4.10 is created, which is partially biobased. One monomer of the two monomers of polyamide 4.10 is largely based on renewable raw materials and not on crude oil, making it environmentally friendly and resource-friendly.
Polyamide sind Polykondensationsprodukte aus Dicarbonsäuren und Diaminen. Eine wirtschaftlich bedeutende Dicarbonsäure ist die Sebacinsäure, welche beispielsweise aus Rizinusöl, gewonnen aus den Samen der Rizinzussstaude, hergestellt wird. Die„10er"- Kompontente des Polyamid 4.10 basiert auf der Sabacinsäure.  Polyamides are polycondensation products of dicarboxylic acids and diamines. An economically important dicarboxylic acid is sebacic acid, which is produced, for example, from castor oil obtained from the seeds of the Rizinzussstaude. The "10s" component of polyamide 4.10 is based on sabacic acid.
Der umweltfreundliche Charakter wird noch dadurch betont, dass die Rizinusstaude unter Bedingungen gedeiht, unter denen sie nicht in Konkurrenz zu anderen Nutzpflanzen steht. Zudem weisen Polyamid 4.10-Fasern im Vergleich zu Naturfasern eine gleichbleibende Qualität auf und sind als Endlosfasern herstellbar. Somit kann eine gleichbleibende Produktqualität sichergestellt werden und die Verarbeitungssicherheit ist gegeben. The eco-friendly character is further emphasized by the fact that the caster grows under conditions in which it does not compete with other crops. In addition, polyamide 4.10 fibers have a constant quality compared to natural fibers and can be produced as continuous fibers. Thus, a consistent product quality can be ensured and the processing reliability is given.
Polyamid 4.10 zeichnet sich durch eine Polymerstruktur aus, die gut verstreckbar ist und einen geeignet hohen Schrumpf bei einem geeigneten Modul aufweist. Im Vergleich zu den übrigen Polyamiden stellt Polyamid 4.10 somit einen guten Kompromiss zwischen Schrumpf und Modul dar, welcher besonders geeignet für den Einsatz als Festigkeitsträger in einer Gürtelbandagenlage ist. Polyamide 4.10 is characterized by a polymer structure which is well stretchable and has a suitably high shrinkage with a suitable module. Compared to the other polyamides polyamide 4.10 thus represents a good compromise between shrink and modulus, which is particularly suitable for use as a strength carrier in a belt bandage position.
Zudem zeichnet sich Polyamid 4.10 durch ein geringes Wasseraufnahmevermögen aus, wodurch die guten Eigenschaften, wie die Bruchkraft, auch bei Feuchtigkeitseinwirkung erhalten. Zusätzlich ist von Vorteil, dass Polyamid 4.10 eine große Ähnlichkeit mit Polyamid 6.6 hat, welches in Verstärkungslagen häufig eingesetzt wird. Auf diese Weise ist ein leichter Austausch von Polyamid 6.6 (PA 6.6) durch Polyamid 4.10 (PA 4.10) unter Beibehaltung beispielsweise des verwendeten Haftsystems möglich. In addition, polyamide 4.10 is characterized by a low water absorption capacity, whereby the good properties, such as the breaking strength, even when exposed to moisture. In addition, it is advantageous that polyamide 4.10 has a great similarity to polyamide 6.6, which is frequently used in reinforcing layers. In this way, an easy replacement of polyamide 6.6 (PA 6.6) by polyamide 4.10 (PA 4.10) while maintaining, for example, the adhesive system used is possible.
Die nachfolgende Tabelle zeigt die vorteilhaften Eigenschaften von PA 4.10-The following table shows the advantageous properties of PA 4.10-
Multifilamentgarnen gegenüber PA 6.6-Multifilamentgarnen: Multifilament yarns versus PA 6.6 multifilament yarns:
Die Werte sind gemessen an einem unverdrehten Garn. The values are measured on an untwisted yarn.
Der Schrumpf ist ermittelt nach ASTM D885 und ASTM D4974.  The shrinkage is determined according to ASTM D885 and ASTM D4974.
Die Kraft-Dehnungsdaten sind ermittelt nach ASTM D855M. The force-strain data are determined according to ASTM D855M.
In einer Ausführungsform der Erfindung ist der Festigkeitsträger ein aus wenigstens zwei verdrehten Multifilamentgamen endverdrehter Cord. Durch die Verdrehung des In one embodiment of the invention, the strength member is a cord twisted from at least two twisted multifilament yarns. By the twisting of the
Multifilamentgarnes bzw. des Cordes ist eine verbesserte Ermüdungsbeständigkeit des Festigkeitsträgers im Vergleich zu unverdrehten Festigkeitsträgern erreicht. Zweckmäßig ist es, wenn das Multifilamentgarn eine Feinheit von 100 bis 5000 dtex und eine Verdrehung von 100 bis 600 t/m aufweist. Derartige Multifilamentgarne lassen sich einfach herstellen und eignen sich zur Verwendung als Festigkeitsträger in Multifilamentgarnes or the Cordes is achieved an improved fatigue strength of the strength member compared to untwisted reinforcements. It is expedient if the multifilament yarn has a fineness of 100 to 5000 dtex and a twist of 100 to 600 t / m. Such multifilament yarns are easy to produce and are suitable for use as a strength carrier in
Fahrzeugluftreifen . Vorteilhaft ist es, wenn der Cord aus 2 oder 3 endverdrehten Multifilamentgamen besteht. In einer bestimmten Ausführung der Erfindung bestehen alle Multifilamentgarne des Cordes aus Polyamid 4.10. Pneumatic vehicle tires. It is advantageous if the cord consists of 2 or 3 endverdrehten Multifilamentgamen. In a particular embodiment of the invention, all multifilament yarns of the cord are made of polyamide 4.10.
In einer alternativen Ausführung der Erfindung besteht ein Multifilamentgam des Cordes nicht aus Polyamid 4.10. Es ist aber auch möglich, dass zumindest ein Multifilamentgam des Cordes nicht aus Polyamid 4.10 besteht. Es handelt sich dann um einen so genannten Hybridcord. Dieser basiert dann zumindest teilweise auf nachwachsenden Rohstoffen, ist ressourcenschonend gestaltet und bietet als weiteren Vorteil die Möglichkeit der definierten Einstellung des Cordes durch eine gezielte Materialauswahl des nicht aus Polyamid 4.10 bestehenden Games. In an alternative embodiment of the invention, a multifilament yarn of the cord does not consist of polyamide 4.10. However, it is also possible that at least one multifilament yarn of the cord does not consist of polyamide 4.10. It is then a so-called hybrid cord. This is then based at least partially on renewable raw materials, is designed to save resources and offers the further advantage of the possibility of defined setting of the cord by a targeted selection of materials not existing polyamide 4.10 Games.
Die Erfindung betrifft ebenfalls einen Fahrzeugluftreifen, welcher eine Verstärkungslage gemäß einer voranstehend ausgeführten Verstärkungslage aufweist. Diese The invention also relates to a pneumatic vehicle tire having a reinforcing ply according to a reinforcing ply configured above. These
Verstärkungslage ist eine Gürtelbandagenlage oder ein Wulstverstärker, wie ein Chipper oder ein Flipper. Reinforcement layer is a belt bandage layer or a bead reinforcement such as a chipper or a pinball machine.
Fahrzeugluftreifen sind Massenprodukte, bei denen der Teil- Austausch erdölbasierter Materialien gegen Materialien, die nicht auf Erdöl basieren, zu einem besonders großen Effekt hinsichtlich der Ressourcenschonung führt. Zudem hat sich gezeigt, dass Pneumatic vehicle tires are mass-produced products where the partial replacement of petroleum-based materials with non-petroleum materials leads to a particularly significant resource conservation effect. It has also been shown that
Verstärkungslagen, enthaltend Festigkeitsträger mit Multifilamentgarnen aus Polyamid 4.10, im Reifen zu hoher Haltbarkeit führen. Reinforcing layers containing reinforcements with multifilament yarns made of polyamide 4.10, leading to high durability in the tire.
Ein PKW-Reifen kann beispielsweise eine Gürtelbandagenlage aus Corden des folgenden Aufbaus aufweisen: For example, a car tire may have a belt bandage layer of cords of the following construction:
Variante A: Konstruktion / Material: 1400x1 / Polyamid 4.10 Variant A: construction / material: 1400x1 / polyamide 4.10
Endverdrehung: 100 t/m  Final twist: 100 t / m
Variante B : Konstruktion / Material: 940x2 / Polyamid 4.10 Variant B: construction / material: 940x2 / polyamide 4.10
Endverdrehung: 350 t/m  Final twist: 350 t / m
Bei Corden, also bei Festigkeitsträgern mit zwei oder mehr Multifilamentgarnen ist die Garndrehung gleich der Corddrehung, nur in entgegengesetzter Richtung. For cords, ie for reinforcements with two or more multifilament yarns, the yarn twist is equal to the cord rotation, only in the opposite direction.

Claims

Patentansprüche claims
1. Verstärkungslage für einen Fahrzeugluftreifen, vorzugsweise für eine 1. reinforcement layer for a pneumatic vehicle tire, preferably for a
Gürtelbandagenlage eines Fahrzeugluftreifens, wobei die Verstärkungslage  Belt bandage layer of a pneumatic vehicle tire, wherein the reinforcing layer
Festigkeitsträger mit wenigstens einem Multifilamentgam aufweist und wobei dieses wenigstens eine Multifilamentgam aus Polyamid besteht, welches zum Großteil auf nachwachsenden Rohstoffen basiert, dadurch gekennzeichnet, dass das Multifilamentgam aus Polyamid 4.10 besteht.  Reinforcing member having at least one Multifilamentgam and wherein this at least one multifilament yarn consists of polyamide, which is largely based on renewable raw materials, characterized in that the multifilament yarn consists of polyamide 4.10.
2. Verstärkungslage nach Anspruch 1, dadurch gekennzeichnet, dass der 2. reinforcing layer according to claim 1, characterized in that the
Festigkeitsträger ein aus wenigstens zwei verdrehten Multifilamentgarnen endverdrehter Cord ist.  Reinforcement is one of at least two twisted multifilament yarn end twisted cord.
3. Verstärkungslage nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das 3. reinforcing layer according to claim 1 or 2, characterized in that the
Multifilamentgam eine Feinheit von 100 bis 5000 dtex und eine Verdrehung von 100 bis 600 t/m aufweist.  Multifilament yarn has a fineness of 100 to 5000 dtex and a twist of 100 to 600 t / m.
4. Verstärkungslage nach einem oder mehreren der vorangehenden Ansprüche, 4. reinforcing layer according to one or more of the preceding claims,
dadurch gekennzeichnet, dass der Cord aus 2 oder 3 endverdrehten  characterized in that the cord of 2 or 3 endverdrehten
Multifilamentgarnen besteht.  Consists of multifilament yarns.
5. Verstärkungslage nach einem oder mehreren der vorangehenden Ansprüche, 5. reinforcing layer according to one or more of the preceding claims,
dadurch gekennzeichnet, dass alle Multifilamentgame des Cordes aus Polyamid 4.10 bestehen.  characterized in that all multifilament yarn of the cord made of polyamide 4.10.
6. Verstärkungslage nach Anspruch 4 oder 5, dadurch gekennzeichnet, dass zumindest ein Multifilamentgam des Cordes nicht aus Polyamid 4.10 besteht. 6. reinforcing layer according to claim 4 or 5, characterized in that at least one Multifilamentgam of the cord does not consist of polyamide 4.10.
7. Fahrzeugluftreifen, dadurch gekennzeichnet, dass dieser eine Verstärkungslage gemäß zumindest einem der Ansprüche 1 bis 6 aufweist. 7. pneumatic vehicle tire, characterized in that it comprises a reinforcing layer according to at least one of claims 1 to 6.
8. Fahrzeugluftreifen nach Anspruch 7, dadurch gekennzeichnet, dass die8. pneumatic vehicle tire according to claim 7, characterized in that the
Verstärkungslage eine Gürtelbandagenlage oder ein Wulstverstärker, wie ein Chipper oder ein Flipper, ist. Reinforcement layer is a belt bandage layer or a bead reinforcement, such as a chipper or a pinball.
EP16813351.0A 2016-03-17 2016-12-20 Reinforcement layer for a pneumatic vehicle tyre, preferably for a belt bandage layer of a pneumatic vehicle tyre Pending EP3500698A1 (en)

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DE102016204423.0A DE102016204423A1 (en) 2016-03-17 2016-03-17 Reinforcement for a pneumatic vehicle tire, preferably for a belt bandage position of a pneumatic vehicle tire
PCT/EP2016/081821 WO2017157498A1 (en) 2016-03-17 2016-12-20 Reinforcement layer for a pneumatic vehicle tyre, preferably for a belt bandage layer of a pneumatic vehicle tyre

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US20190077194A1 (en) 2019-03-14
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