NL2002956C2

NL2002956C2 - Non-pneumatic tire.

Info

Publication number: NL2002956C2
Application number: NL2002956A
Authority: NL
Inventors: Louis-Philippe Antoine Eugene Maria Reuvekamp; Petrus Johannes Swaaij; Cristian Bernard Maria Greve; Laura Bosch
Original assignee: Vredestein Banden B V
Priority date: 2009-06-03
Filing date: 2009-06-03
Publication date: 2010-12-07

Description

Non-pneumatic tire

The invention relates to a non-pneumatic tire, comprising an annular support structure, a tread portion disposed on a radially outer surface of the annular support structure, and 5 means for interconnecting the support structure with a wheel. The invention further relates to a method for mutually adhering an annular support structure of a nonpneumatic tire to a tread portion thereof.

Non-pneumatic tires for use in automotive and other vehicles have been described, for 10 example in EP 1 980 420 Al. The known non-pneumatic tire comprises an annular support structure, a tread portion disposed on a radially outer surface of the annular support structure, and means for interconnecting the support structure with a wheel or hub. The support structure comprises a reinforced annular band disposed radially inward of the tread portion, and a plurality of spokes extending transversely across and 15 radially inward from the reinforced annular band and anchored in a wheel or hub. The spokes thereby transmit load forces between the annular band and the hub through tension in the spokes not connected to the ground contacting portion of the tire. The tire supports its load solely through the structural properties and, contrary to the mechanism in pneumatic tires, without support from internal air pressure.

20

In the tire of EP 1 980 420 Al, the spokes extend substantially straight in the radial direction in the unloaded state. The support structure acts as a so-called "top loading" structure, meaning that the vertical load applied from the ground against a fixed hub is resisted by tensile forces in the spokes that are generally outside of the region where the 25 wheel is in contact with the load surface. The spokes in the latter region carry little or no load, and have generally undergone a buckling deformation.

The known non-pneumatic tire needs improvement, among other aspects in reducing its rolling resistance. Reducing rolling resistance directly affects fuel consumption.

The aim of the present invention is to provide a non-pneumatic tire having a reduced rolling resistance as compared to the known non-pneumatic tire and providing additional advantages that will become apparent hereinafter.

30 2

To fulfil this and other aims, a non-pneumatic tire, comprising an annular support structure and, optionally, a tread portion disposed on a radially outer surface of the annular support structure, the annular support structure comprising two concentric rings, between which a plurality of curved spokes is provided, adjacent pairs of which join at 5 one or both of the concentric rings. Initially curved spokes are expected to provide less load bearing capacity (they are more prone to buckling for instance) and therefore are expected to barely resist deformation of the ground contacting portion of the tire to a flat contact region, which in turn increases rolling resistance. Contrary to this common belief, by joining the spokes at the outer or inner concentric ring, or at both rings, the 10 spokes of the invention actually improve rolling behaviour of the non-pneumatic tire.

Preferably the tire according to the invention is characterized in that the spokes form the members of a truss work. In this embodiment, each joint of at least two spokes is connected to another joint of at least two spokes, as will be explained further below, 15 thereby increasing stiffness.

In a preferred embodiment of the invention, adjacent pairs of the spokes are either curved towards each other or curved away from each other in an unloaded state. The reversed curvatures of adjacent spokes apparently act together in the desired direction, 20 i.c. to facilitate rolling.

According to the invention, a non-pneumatic tire is provided, comprising a plurality of curved spokes. The spokes have an outer end portion and an inner end portion, whereby the outer end portion is connected to the outer concentric ring, and the inner end portion 25 to the inner concentric ring. The inner concentric ring is connected to a wheel or hub that is configured to attach the tire to a vehicle axle or other apparatus capable of rotation about an axis. Each of the spokes has a curvilinear length that exceeds the length in the radial direction of the tire of a straight line segment that extends from the outer end portion of a spoke to the inner end portion of the same spoke. The spokes are 30 curved such that adjacent pairs of which join at one or both of the concentric rings, and preferably are either curved towards each other or curved away from each other in an unloaded state. In this preferred embodiment, when viewing a pair of spokes from an intermediate plane, two adjacent spokes preferably either have facing concave surfaces or facing convex surfaces.

3

In a further preferred embodiment of the invention, the outer end portion and/or the inner end portion of a spoke, when viewed in a transverse section, make a non-zero angle with the (imaginary) straight line segment between the concentric rings. Tt is even 5 more preferred that the outer end portion and/or the inner end portion of a spoke, when viewed in a transverse section, extend tangentially to the outer and/or inner concentric ring.

It is possible according to the invention that a spoke comprises more than one concave 10 and/or convex segment, provided that an adjacent spoke comprises corresponding convex and/or concave segments, i.c such that when viewing a pair of spokes from an intermediate plane, two adjacent spokes either have facing concave segment surfaces or facing convex segment surfaces. The preferred tire however has spokes comprising one concave or convex surface only.

15

Besides exhibiting a reduced rolling resistance when compared to the known nonpneumatic tire, the non-pneumatic tire according to the invention shows a vertical stiffness that can easily be tuned according to the circumstances. Since two adjacent spokes have mirrored convex or concave surfaces, they may upon deformation of the 20 tire when rolling on the ground contact each other at some level. This will increase vertical stiffness. The deformation level at which contact takes place can be tuned easily by varying the mutual distance between two spokes in the circumferential direction of the annular support structure. With vertical stiffness is meant in the context of this application, the vertical force generated for a unit vertical deflection or displacement 25 upward of the ground with the hub held fixed. Depending on the end-use load carrying application, it may be desirable to have a structure that has a higher initial vertical stiffness. This would typically be appropriate for an application where there is a high static load, such as for a piece of heavy construction equipment. On the other hand, other applications may benefit from a low initial stiffness, such as for instance for an off 30 road truck, where the device needs to roll easily over obstacles when lightly loaded. The tire of the invention allows to meet both ends.

4 A further advantage of the tire according to the invention is that it allows to withstand a relatively high average contact pressure between the tread portion disposed on the radially outer surface of the annular support structure and the loading surface.

5 In a preferred embodiment of the tire according to the invention, the spokes form a plurality of circular webs disposed between the two concentric rings, when viewed in a transverse section. Webs with a circular cross-section are easily manufactured and moreover tend to give isotropic stiffness properties, i.e. the same stiffness in all directions.

10

An even more preferred embodiment of the tire according to the invention is characterized in that the spokes form a plurality of elliptical webs disposed between the two concentric rings. Webs of elliptical cross-section can be tailored with respect to stiffness requirements by varying the ratio of the lengths of the major and minor axis of 15 the ellipse, notwithstanding the possibility to alter stiffness by a choice of material.

Preferably a tire according to the invention is characterized in that the major axis of the elliptical webs extend in the radial direction of the annular support structure. Such an embodiment exhibits an optimum balance of properties, such as reduced rolling 20 resistance, adequate strength and stiffness.

It is possible for the spokes to be mutually connected by stiffening members that extend between at least two adjacent spokes. All spokes can be mutually connected but it is also possible to altematingly connect a pair of spokes and leave the next pair of spokes 25 unconnected. Another option is to connect a spoke to one of its two neighbours only, and not connect it to the other neighbour.

The stiffening members may comprise stiffening bars or struts, strings, and tension and/or compression members. It is also possible to provide a stiffening member that 30 substantially fills the space between a pair of spokes. For instance, providing stiffening members that substantially fill the space between a pair of spokes with a circular cross-section would yield a support structure that, when viewed in a transverse section, comprises a plurality of circular holes within a solid annular body.

5

It has advantages when the spokes of a tire according to the invention are connected to at least one of the concentric rings through a pressure distributing plate. Such a connection offers an increased strength, stiffness and moreover yields a further reduced rolling resistance.

5

Rolling resistance is further reduced by an embodiment of the tire wherein the support structure comprises a reinforcement ring at its radially outward circumferential surface. Such a reinforcement ring may be separate from the support structure and bonded thereto, or may be an integral part of the support structure.

10 A further preferred embodiment of the tire according to the invention is characterized in that the support structure, the spokes and/or the reinforcement ring comprise reinforcing yams or cords, embedded in a polymer. Although any type of reinforcing yams or cords and matrix polymer may be chosen, preferred reinforcing yarns or cords comprise glass 15 and/or carbon yams or cords, and a preferred polymer is chosen from the group of polyesters, polyethers, polyamides, vinyl polymers, polyolefin’s, styrene polymers, thermoplastic mbbers, and/or thermosetting or thermoplastic polyurethanes.

Most preferably, the polymer is a thermosetting polyurethane. Hardened thermosetting 20 polyurethane provides a particularly low rolling resistance, largely due to its low hysteresis properties. It has turned out that a non-pneumatic tire, comprising an annular support structure and, optionally, a tread portion disposed on a radially outer surface of the annular support structure, the annular support structure comprising two concentric rings, between which a plurality of curved spokes is provided, adjacent pairs of which 25 are either curved towards each other or curved away from each other in an unloaded state, and wherein the support stmeture, the spokes and/or the reinforcement ring comprise reinforcing yams or cords, embedded in a thermosetting polyurethane matrix, in particular provide the desired combination of a relatively low rolling resistance and adequate stiffness to at least hinder flattening of the non-pneumatic tire at the contact 30 area with the ground.

In order to further reduce rolling resistance, a particularly preferred tire according to the invention has been found to comprise a tread portion that is adhered to the support stmeture by an adhesive composition comprising at least a polyisocyanate, a polyol and 6 a catalyst. Even more preferred is a tire wherein the composition of the support structure corresponds to said adhesive composition. The use of an adhesive composition comprising at least a polyisocyanate, a polyol and a catalyst for mutually adhering an annular support structure of a non-pneumatic tire, the support structure being made of a 5 polar polymer, in particular of thermosetting polyurethane, and a tread portion of an at least partially vulcanized rubber polymer, in view of reducing the rolling resistance of the tire was not known hitherto.

Even more preferred is a tire comprising a tread portion that is adhered to the support 10 structure by a method, comprising at least the following steps of: (A) providing a tread portion of a rubber polymer which comprises a compound containing carboxylic acid anhydride; (B) providing a support structure of a polymer; (C) providing an adhesive composition comprising at least a polyisocyanate, a 15 polyol and a catalyst; (D) arranging an adhesive layer of the adhesive composition on the surface for adhesion of at least one of the tread portion and the support structure; (E) bringing the surfaces for adhesion together under pressure; (F) polymerizing at least the adhesive layer at a suitable temperature.

20

In another preferred embodiment, steps (D) and (E) are replaced by a step (D ), comprising bringing the surfaces for adhesion of the tread portion and the support structure together, and casting an adhesive layer of the adhesive composition between the surfaces. Preferably, bringing the surfaces for adhesion of the tread portion and the 25 support structure together is carried out in a mould without applying pressure.

Preferably, the tread portion is obtained by admixing rubber oligomers containing carboxylic acid anhydride to a rubber, admixing other additives if desired, and at least partially vulcanizing the thus formed rubber composition. More preferably, between 1 30 and 50% by weight of rubber oligomers containing carboxylic acid anhydride are admixed to the rubber relative to the weight of the rubber.

In a particularly preferred embodiment, the tire comprises a separate intermediate layer between the tread portion and the support structure, the intermediate layer being 7 obtained by admixing rubber oligomers containing carboxylic acid anhydride to a rubber, admixing other additives if desired, and at least partially vulcanizing the thus formed rubber composition. This embodiment has the advantage that the oligomers or other additives, added to the intermediate layer for good bonding with the support 5 structure, do not interfere with the desired properties of the tread portion.

Polyisocyanates suitable for application in the adhesive composition comprise toluene diisocyanates, m-phenylene diisocyanate, 4-chloro-l,3-phenylene diisocyanate, 4,4'-tetramethylene diisocyanate, 1,6-hexamethylene diisocyanate, 1,10-decamethylene 10 diisocyanate, 1,4-cyclohexylene diisocyanate, 4,4'-methylene bis cyclohexane diisocyanatc, 1,4-cyclo hexane bis methyl isocyanate, isophoronc diisocyanatc, 1,5-tetrahydronaphthalene diisocyanate, p-xylene diisocyanate, m-xylene diisocyanate and polymers, such as dimers en trimers of such diisocyanates. This series is given only by way of example, and is by no means intended as limitative.

15

Polyols, and in particular diols, suitable for application in the adhesive composition comprise aliphatic diols such as for instance ethylene glycol, propane-1,2-diol, propane-1,3-diol, butane-1,2-diol, butane-1,4-diol, butane-1,3-diol, 2,2-dimethyl propanediol-1,3 (= neopentylglycol), hexane-2,5-diol, hexane- 1,6-diol, 2,2-bis-20 (4-hydroxycyclohcxyl)-propanc (hydrogenated bisphcnol-A), 1,4-dimethylolcyclohexane, diethyleneglycol, dipropyleneglycol and 2,2-bis[4-2— hydroxyethoxy)-phenylpropane. It is also possible to apply aromatic polyols and/or relatively small quantities, such as less than about 4% by weight, but preferably less than 2% by weight, of trifunctional alcohols. In a preferred embodiment of the 25 invention, the adhesive composition of the adhesive layer comprises a short chain diol and a long chain diol. In the context of this application a short chain diol is understood to mean a diol comprising 1 to 50 carbon atoms. In the context of this application a long chain diol is understood to mean a diol comprising at least 51 carbon atoms. Different compounds can be applied as chain extender or flexible chain, provided they have a 30 group reactive with the isocyanate. Examples of suitable reactive groups comprise hydroxyl groups, amines, acids, epoxy and thiols. Generally speaking, suitable reactive groups comprise a nucleophilic part, which in the context of this application is understood to mean a negative ion or molecule with a non-binding or free electron pair 8 which can react relatively simply with an electrophilic particle, generally as electron-pair donor.

All catalysts known for polyurethane reactions, such as for instance metal complexes or 5 amines, are in principle applicable in the adhesive composition. The quantity of catalyst generally lies between 0.01 and 3% by weight relative to the overall weight of the adhesive composition, although other contents are possible.

The invention will now be further elucidated on the basis of the accompanying figures, 10 without however being limited thereto. In the figures:

Figure 1 shows a perspective view of the support structure of a first embodiment of a non-pneumatic tire according to the invention;

Figure 2 shows a perspective view of the support stmeture of a second embodiment of a non-pneumatic tire according to the invention; 15 Figure 3 shows a perspective view of a detail of a non-pneumatic tire having the support structure shown in figure 1; and

Figure 4 shows a perspective view of a tire according to another embodiment.

Referring to figure 4, a non-pneumatic tire 1 is shown. Tire 1 comprises an annular 20 support structure 10 and, disposed on a radially outer surface of the annular support structure 10, a tread portion 30. To connect the support structure 10 to a wheel or hub, the latter is at least partly positioned in the opening 14, defined by inner circumferential ring 12, with the aid of intermediate means 40 for interconnecting the support structure 10 with the wheel or hub. The annular support structure 10 comprises two concentric 25 rings (11,12), between which a plurality of curved spokes 13 is provided. In the embodiment shown in figure 4, an adjacent pair (13a, 13b) of spokes 13 join at the outer concentric ring 11 at location 50, while the adjacent pair (13b, 13c) joins at the inner concentric ring 12 at location 51. In this embodiment, each joint (50, 51,...) of at least two spokes is connected to another joint by a spoke. For instance, the joint 50 of spokes 30 13a and 13b is connected to joint 51 of spokes 13b and 13c through spoke 13b. The spokes (13) thereby form the members of a truss work.

Referring to figure 1, another embodiment of the support structure of a non-pneumatic tire 1 according to the invention is shown. The annular support stmeture 10 is entirely 9 made of thermosetting polyurethane (PU) by pouring a mixture of an isocyanate, a polyol and a catalyst into a mould, letting the PU polymerise, and removing the solidified product from the mould. Annular support structure 10 comprises two concentric rings (11,12), between which a plurality of curved spokes 13 is provided.

5 The inner ring 12 is provided to be connected to the wheel or hub (not shown) of a vehicle. To connect the support structure 10 to a wheel or hub, the latter is at least partly positioned in the opening 14, defined by inner circumferential ring 12, if desired with the aid of intermediate means for interconnecting the support structure 10 with the wheel or hub. Inner ring 12 is in the connected position tightly clamped around the 10 wheel or hub. In the embodiment shown in figure 1, the spokes 13 form a plurality of elliptical webs disposed between the two concentric rings (11,12), the major axis of the elliptical webs 13 extending in the radial direction R of the annular support structure 10. In the embodiment of figure 2, the spokes 13 form a plurality of circular webs disposed between the two concentric rings (11,12).

15

According to the invention, and as shown in more detail in figure 3, the spokes 13 have an outer end portion 23 and an inner end portion 33. The outer end portion 23 is connected to the outer concentric ring 11, while the inner end portion 33 is connected to the inner concentric ring 12. The spokes have webs, extending along the entire width 19 20 of support structure 10. Each of the spokes 13 has a curvilinear length that exceeds the length in the radial direction R of the tire of a straight line segment 20 that extends from the outer end portion 23 of a spoke 13 to the inner end portion 33 of the same spoke 13. As shown in more detail in figure 3, adjacent pairs of spokes 13 are either curved towards each other or curved away from each other in an unloaded state. Indeed, spokes 25 (13a, 13b) are curved away from each other, while spokes (13b, 13c) are curved towards each other in an unloaded state. When viewing the pair (13a, 13b) of spokes from an intermediate plane 15, the spokes (13a, 13b) have facing convex surfaces (16a, 16b). When viewing the pair (13b, 13c) of spokes from an intermediate plane 17, the spokes (13b, 13c) have facing convex surfaces (18b, 18c). The outer end portion 23 and inner 30 end portion 33 of a spoke 13 preferably make a non-zero angle 21 with the (imaginary) straight line segment 20 between the concentric rings (11, 12) when viewed in a transverse section. Since two adjacent spokes (13b, 13c) have mirrored concave surfaces (16b, 18b), they may upon deformation of the tire when rolling on the ground contact each other at the central parts of these surfaces (16b, 18b). This will inhibit 10 further flattening of the webs (13b, 13c) and therefore increase vertical stiffness. The deformation level at which contact takes place can be tuned easily by varying the mutual distance between two spokes 13 in the circumferential direction of the annular support structure.

5

The spokes 13 may be mutually connected by stiffening members 31 that extend between at least two adjacent spokes (13b, 13c). An example of a stiffening member 31 in the form of a compression member is shown in figure 3. It is also possible to provide a stiffening member 32 (see figure 2) that substantially fills the space between a pair of 10 spokes (13b, 13c). For instance, providing stiffening members 32 that substantially fill the space between a pair of spokes 13 with a circular cross-section would yield a support structure that, when viewed in a transverse section, comprises a plurality of circular holes 34 within a solid annular body 10. This embodiment is shown in figure 2.

15 As shown in more detail in figure 3, the spokes 13 may be connected to the concentric rings (11, 12) through a pressure distributing plate 22. The support structure 10 further is equipped with a reinforcement ring 230 of steel or yams or cord reinforced composite material at its radially outward circumferential surface. A layer of glass fabric 24 is provided at the radially inward circumferential surface of support structure 10. It is also 20 possible to provide the spokes 13 with reinforcement.

To provide adequate strength and stiffness, the support structure, and in particular the spokes 13 and reinforcement ring 230 comprise carbon or steel yarns or cords, embedded in a polymer, such as an epoxy, but preferably thermosetting PU. Other cords 25 may also be used such as polyester cords, rayon cords, aramid cords, and/or cords of high performance polyethylene.

The tire 1 is further optionally provided with a tread portion 30, disposed on a radially outer surface of the annular support structure 10. This tread portion 30 is made of 30 vulcanised mbber and possibly provided with grooves. The tread portion 30 is adhered to the support structure 10 by an adhesive composition comprising at least a polyisocyanate, a polyol and a catalyst Alternatively, the support structure 10 itself comprises at least a polyisocyanate, a polyol and a catalyst.

11

The non-pneumatic tire according to the invention can be used for any vehicle aimed to transport loads. Suitable examples include but are not limited to cars, trucks, aircraft, lunar or other planetary vehicles, bikes and motorbikes, electrical and solar energy vehicles, and wheelbarrows. The invented tire can also be used for other applications 5 such as for transmissions, and the like.

The non-pneumatic tire according to the invention shows a reduced rolling resistance when compared to the known non-pneumatic tire. Moreover, improved water transport and drainage is obtained easily by providing the support structure 10 with small holes in 10 the outer and/or inner ring structures (11,12). Also, the noise level generated when rolling the tire over a surface may also be reduced.

Claims

1. N iet-pneumat ische band (1), omvattende een ringvormige steunstructuur (10) en, eventueel, een loopvlakgedeelte (30) dat is aangebracht op een radiaal 5 buitenoppervlak van de ringvormige steunstructuur (10), waarbij de ringvormige steunstructuur (10) twee concentrische ringen (11,12) omvat, waartussen zich een hoeveelheid gekromde spaken (13) uitstrekt, waarvan naastliggende paren (13a, 13b, 13c,...) samenkomen bij één of beide concentrische ringen (11,12).A non-pneumatic tire (1) comprising an annular support structure (10) and, optionally, a tread portion (30) disposed on a radial outer surface of the annular support structure (10), the annular support structure (10) ) comprises two concentric rings (11, 12), between which a quantity of curved spokes (13) extends, of which adjacent pairs (13a, 13b, 13c, ...) come together at one or both of the concentric rings (11,12).

2. Band volgens conclusie 1, met het kenmerk dat de spaken (13) de ribben vormen van een vakwerk.Tire according to claim 1, characterized in that the spokes (13) form the ribs of a truss.

3. Band volgens conclusie 1 of 2, met het kenmerk dat naastliggende paren (13a, 13b, 13c, ...) van de spaken naar elkaar toe zijn gekromd of van elkaar af zijn gekromd 15 in een onbelaste toestand.Tire according to claim 1 or 2, characterized in that adjacent pairs (13a, 13b, 13c, ...) of the spokes are curved towards each other or curved away from each other in an unloaded state.

4. Band volgens conclusie 3, met het kenmerk dat de spaken (13) een hoeveelheid cirkelvormige lijfplaten vormen die zich tussen de twee concentrische ringen (11,12) uitstrekken. 20A tire according to claim 3, characterized in that the spokes (13) form a plurality of circular web plates extending between the two concentric rings (11, 12). 20

5. Band volgens conclusie 3, met het kenmerk dat de spaken (13) een hoeveelheid ellipsvormige lijfplaten vormen die zich tussen de twee concentrische ringen (11, 12) uitstrekken.Tire according to claim 3, characterized in that the spokes (13) form a quantity of elliptical body plates which extend between the two concentric rings (11, 12).

6. Band volgens conclusie 5, met het kenmerk dat de hoofdas van de cllipsvormigc lijfplaten zich in de radiale richting van de cirkelvormige steunstructuur (10) uitstrekken.The tire according to claim 5, characterized in that the major axis of the clip-shaped web plates extend in the radial direction of the circular support structure (10).

7. Band volgens één der voorgaande conclusies, met het kenmerk dat de spaken 30 (13) zijn verbonden met ten minste één van de concentrische ringen (11, 12) onder tussenkomst van een druk verdeelplaat (22).A tire according to any one of the preceding claims, characterized in that the spokes (13) are connected to at least one of the concentric rings (11, 12) through a pressure distribution plate (22).

8. Band volgens één der voorgaande conclusies, met het kenmerk dat de steunstructuur (10) een versterkingsring (23) omvat aan zijn radiaal buitenomtreksoppervlak.A tire according to any one of the preceding claims, characterized in that the support structure (10) comprises a reinforcement ring (23) on its radially outer peripheral surface.

9. Band volgens één der voorgaande conclusies, met het kenmerk dat de steunstructuur (10), de spaken (13) en/of de versterkingsring (23) in een polymeer ingebedde versterkingsgarens of koorden omvatten.Tape according to one of the preceding claims, characterized in that the support structure (10), the spokes (13) and / or the reinforcement ring (23) comprise reinforcement yarns or cords embedded in a polymer.

10. Band volgens één der voorgaande conclusies, met het kenmerk dat de 10 versterkingsgarens of koorden glas en/of koolstofgarens of koorden omvatten, en dat het polymeer is gekozen uit de groep van polyesters, polycthcrs, polyamides, vinylpolymeren, polyolefines, styreenpolymeren en/of thermoplastische rubbers, en bij voorkeur thermohardend polyurethaan.10. Tape according to any one of the preceding claims, characterized in that the reinforcement yarns or cords comprise glass and / or carbon yarns or cords, and in that the polymer is selected from the group of polyesters, polyesters, polyamides, vinyl polymers, polyolefins, styrene polymers and / or or thermoplastic rubbers, and preferably thermosetting polyurethane.

11. Band volgens één der voorgaande conclusies, met het kenmerk dat het loopvlakgedeelte (30) aan de steunstructuur (10) is gehecht door middel van een lijmsamenstelling die ten minste een polyisocyanaat, een polyol en een katalysator omvat.A tire according to any one of the preceding claims, characterized in that the tread portion (30) is adhered to the support structure (10) by means of an adhesive composition comprising at least one polyisocyanate, a polyol and a catalyst.

12. Band volgens conclusie 11, met het kenmerk dat het loopvlakgedeelte aan de steunstructuur is gehecht door middel van een werkwijze, die ten minste de stappen omvat van: (A) het verschaffen van een loopvlakgedeelte uit een rubberpolymeer dat een carbonzuuranhydride verbinding omvat; 25 (B) het verschaffen van een steunstructuur uit een polymeer; (C) het verschaffen van de lijmsamenstelling die ten minste een polyisocyanaat, een polyol en een katalysator omvat; (D) het aanbrengen van een lijmlaag uit de lijmsamenstelling op het te hechten oppervlak van ten minste één van het loopvlak en de steunstructuur; 30 (E) het bijeenbrengen van de te hechten oppervlakken; (F) het uitharden van ten minste de lijmlaag bij een geschikte temperatuur.A tire according to claim 11, characterized in that the tread portion is bonded to the support structure by a method comprising at least the steps of: (A) providing a tread portion from a rubber polymer comprising a carboxylic anhydride compound; (B) providing a support structure from a polymer; (C) providing the adhesive composition comprising at least one polyisocyanate, a polyol, and a catalyst; (D) applying an adhesive layer from the adhesive composition to the surface to be adhered to at least one of the tread and the support structure; (E) bringing the surfaces to be bonded together; (F) curing at least the adhesive layer at a suitable temperature.

13. Band volgens conclusie 11, met het kenmerk dat het loopvlakgedeelte aan de steunstructuur is gehecht door middel van een werkwijze, die ten minste de stappen omvat van: (A) het verschaffen van een loopvlak gedeelte uit een rubberpolymeer dat een 5 carbonzuuranhydride verbinding omvat; (B) het verschaffen van een steunstructuur uit een polymeer; (C) het bijeenbrengen van de te hechten oppervlakken van het loopvlakgedeelte en de steunstructuur; (D) het gieten van een lijmlaag uit de lijmsamenstelling tussen de oppervlakken, en 10 (E) het uitharden van ten minste de lijmlaag bij een geschikte temperatuur.13. Tire according to claim 11, characterized in that the tread portion is adhered to the support structure by a method comprising at least the steps of: (A) providing a tread portion from a rubber polymer comprising a carboxylic acid anhydride compound ; (B) providing a support structure from a polymer; (C) bringing together the surfaces of the tread portion and the support structure to be bonded; (D) casting an adhesive layer from the adhesive composition between the surfaces, and (E) curing at least the adhesive layer at a suitable temperature.

14. Band volgens één der voorgaande conclusies, met het kenmerk dat het loopvlakgedeelte aan de steunstructuur is gehecht door middel van een werkwijze, die ten minste de stappen omvat van: 15 (A) het verschaffen van een loopvlak gedeelte uit een rubberpolymeer dat een carbonzuuranhydride verbinding omvat; (B) het verschaffen van een steunstructuur uit een samenstelling die ten minste een polyisocyanaat, een polyol en een katalysator omvat; (C) het bijeenbrengen van de te hechten oppervlakken van het loopvlakgedeelte en 20 de steunstructuur; (D) het uitharden van ten minste de samenstelling van de steunstructuur bij een geschikte temperatuur.A tire according to any one of the preceding claims, characterized in that the tread portion is adhered to the support structure by a method comprising at least the steps of: (A) providing a tread portion from a rubber polymer comprising a carboxylic acid anhydride connection; (B) providing a support structure from a composition comprising at least one polyisocyanate, a polyol and a catalyst; (C) bringing together the surfaces of the tread portion and the support structure to be bonded; (D) curing at least the composition of the support structure at a suitable temperature.

15. Band volgens één der conclusies 12 tot en met 14, met het kenmerk dat het 25 loopvlakgedeelte is verkregen door inmengen van carbonzuuranhydride bevattende rubberoligomeren in een rubber, desgewenst inmengen van andere toeslagstoffen, en tenminste gedeeltelijk vulkaniseren van de aldus gevormde rubbersamenstelling.15. A tire according to any one of claims 12 to 14, characterized in that the tread portion is obtained by mixing in rubberic acid anhydride containing rubber oligomers, optionally mixing in other additives, and at least partially vulcanizing the rubber composition thus formed.

16. Band volgens één der conclusies 12 tot en met 14, met het kenmerk dat de 30 band een separate tussenlaag omvat tussen het loopvlakgedeelte en de steunstructuur, waarbij de tussenlaag is verkregen door het inmengen van carbonzuuranhydride bevattende rubberoligomeren in een rubber, het desgewenst inmengen van andere toeslagstoffen, en het tenminste gedeeltelijk vulkaniseren van de aldus gevormde rubbersamenstelling.16. A tire according to any one of claims 12 to 14, characterized in that the tire comprises a separate intermediate layer between the tread portion and the support structure, wherein the intermediate layer is obtained by blending carboxylic anhydride-containing rubber oligomers into a rubber, blending in if desired. of other additives, and at least partially vulcanizing the rubber composition thus formed.

17. Het gebruik van een lijmsamenstelling die ten minste een polyisocyanaat, een polyol en een katalysator omvat voor het onderling hechten van een ringvormige steunstructuur (10) van een niet-pneumatische band, waarbij de steun structuur uit een 5 polair polymeer is vervaardigd, in het bijzonder uit thermo hardend polyurethaan, en een loopvlakgedeelte (30) uit een ten minste gedeeltelijk gevulkaniseerd rubberpolymeer, dat een carbonzuuranhydride bevattende verbinding omvat.17. The use of a glue composition comprising at least one polyisocyanate, a polyol and a catalyst for the mutual bonding of an annular support structure (10) of a non-pneumatic tire, wherein the support structure is made of a polar polymer, in in particular from thermosetting polyurethane, and a tread portion (30) from an at least partially vulcanized rubber polymer comprising a carboxylic anhydride-containing compound.