Abstract:
The present technology provides a rubber composition for a tire with which it is possible to produce a tire having excellent on-ice performance and excellent wear resistance, and a studless winter tire using the rubber composition. The rubber composition for a tire of the present technology is a rubber composition for a tire comprising: 100 parts by mass of a diene rubber (A); from 30 to 100 parts by mass of carbon black and/or a white filler (B); and from 0.3 to 30 parts by mass of a cured product (C) prepared by curing a crosslinkable oligomer or polymer (c1) incompatible with the diene rubber (A); a JIS A hardness of the cured product (C) being from 3 to 45.
Abstract:
A tire includes a tread with an internal cavity. Positioned in the internal cavity is a composite cord structured to include an elastomer core and a sheath surrounding the elastomer core. The sheath is formed of a hollow cylindrical braid made of helically intertwined non-contiguous fibers. The tire may be pneumatic or non-pneumatic.
Abstract:
An object of the invention is to provide an elastomer composition containing a substance as an alternative raw material for an elastomer component, which is low in environmental load and capable of being produced at low cost, and a tire using the elastomer composition. Here, the elastomer composition and the tire of the invention are characterized in containing residuum generated in a fermentative treatment of an organic matter in an elastomer component. In addition, as the above fermentative treatment, an anaerobic fermentative treatment or an aerobic fermentative treatment can be used.
Abstract:
In the process for producing a tread (4) for a vehicle tire: a tread strip made of rubber (4) is extruded; at least one furrow (44) is formed in the tread strip, the tread strip exhibiting material that is contiguous with the furrow; at least one string (8) is supplied from a coil; the string is inserted into the one furrow or each furrow; and the furrow is reclosed over the string using material of the tread strip that is contiguous with the furrow.
Abstract:
A elastomer structure (10) for tyres or shoe soles, said elastomer structure (10) comprising:—an elastomer wear layer (11) comprising threads (12) being moulded into the wear layer (11),—and an adjacent cord layer (13), wherein the threads (12) in their longitudinal direction are arranged essentially perpendicular to the cord layer (13), characterized in that the threads (12) are attached inside the cord layer (13), the threads (12) each having two legs 16 going through a respective hole (17a) and (17b) in the cord layer (13) and extend longitudinally through the cord (13) to a wear surface (14) of the wear layer (11) and in that part of the legs (16) are wave-formed.
Abstract:
Device for embedding a thread (F) in a rubber profiled element (P) in a given direction comprising: a continuous thread-feed means (4) arranged on a fixed structure, a moving support (2) able to run along a structure (1) in a reciprocating rectilinear movement between a raised position and a lowered position and comprising a top (21) and a base (22) between which is formed a duct (25) intended to guide the thread (F), A hollow needle (5) comprising a canal (53) in which the said thread (F) is able to run, which needle is fixed by one of its ends (51) to the base (22) of the moving support (2) in the continuation of the duct (25), and comprising at its other end a tip (52) capable of penetrating the said rubber profiled element (P), a cutter (3) arranged on the structure (1), comprising a rotary blade (30) comprising a cutting wire (34) able, when the needle is in the raised position, to cut off the thread (F) at a given distance (d) from the tip of the needle upon each cycle of reciprocating movement of the needle. The cutter comprises a paddle (32) arranged behind the cutting wire (34) of the blade and intended to fold the tail around the tip (52) of the needle just after the thread has been cut by the blade (30).
Abstract:
The present invention is directed to a pneumatic tire comprising a tread, the tread comprising a ground contacting rubber composition comprising a diene based elastomer and short fibers, wherein the short fibers extend lengthwise in a substantially axial direction of the tire.
Abstract:
The present invention provides a rubber composition which has closed cells and comprises (A) at least one rubber component selected from natural rubber and diene-based synthetic rubbers, (B) silica in an amount of 10 to 150 parts by mass based on 100 parts by mass of the rubber component, (C) an organic fiber in an amount of 0.02 to 20 parts by mass based on 100 parts by mass of the rubber component and (D) a silane coupling agent represented by following general formula (I): in an amount of 1 to 30% by mass based on the amount by mass of silica of Component (B), exhibits excellent workability in processing the rubber and can provide a tire exhibiting excellent performance of braking and driving on road surfaces having ice and snow (excellent performance on ice) and excellent abrasion resistance; and a pneumatic tire which is obtained by using the rubber composition for a tread and exhibits the performance described above.
Abstract:
This invention provides a rubber composition highly balancing flexibility at a low temperature and a low rolling resistance, which is formed by compounding a low-molecular weight conjugated diene-based polymer (B) having at least one functional group, an aromatic vinyl compound content of less than 5% by mass and a weight average molecular weight as measured without terminating by modification through a gel permeation chromatography and converted to polystyrene of not less than 2,000 but less than 150,000 and a filler (C) into a high-molecular weight rubber component (A) having a weight average molecular weight as measured without terminating by modification through a gel permeation chromatography and converted to polystyrene of not less than 150,000.
Abstract:
The invention relates to a tire with a tread having an intermediate rubber layer which contains a dispersion of high strength hollow glass and/or ceramic microspheres. In particular, such tire tread is comprised of at least three radially disposed zones of rubber layers composed of a radially outer tread rubber cap layer, a radially inner tread base rubber layer and an intermediate, transition rubber layer positioned between said outer rubber cap layer and said inner rubber base layer. The intermediate tread rubber contains a dispersion of glass and/or ceramic microspheres together with a coupling agent.