Abstract:
A metallic cord is composed of metallic filaments (10) gathered together, the metallic filaments (10) include at least one patterned filament (10A) which is, before gathered together, two-dimensionally waved so as to have a wave form defined by plural kinds of cycles different from each other in respect of the wave length and/or wave height. A pneumatic tire (1) includes the metallic cords as its carcass cords.
Abstract:
The present invention relates to a metal fibre (1), at least one side face (2, 3) of the metal fibre (1) being provided with recesses (12, 22; 13, 23). It is preferred that the recesses (12, 22; 13, 23) are positioned at a regular distance from each other, and that the at least one recess (12, 22; 13, 23) is recessed with respect to the side face (2, 3) of the metal fibre (1) over a distance which is less than 50%, preferably less than 30% of the width of the metal fibre (1). The metal fibre (1) may further be provided with a plurality of undulations (6) extending in length direction of the metal fibre (1). The invention also relates to a method for producing such a metal fibre.
Abstract:
A pneumatic tyre comprises a carcass (6) extending between bead portions (4) through a tread portion (7) and sidewall portions (3), and a belt (7) disposed radially outside of the carcass in the tread portion (2), wherein the belt (7) comprises at least one monofilament cord ply (11) made of parallel monofilament cords (10), each monofilament cord is a single metallic filament (F) having a circular cross sectional shape, a diameter of from 0.35 to 0.70 mm, a tensile strength of from 2800 to 3700 Newton/sq.mm, and a bending rigidity of from 35 to 260 gf cm, and the cord count of the monofilament cords in the monofilament cord ply is in a range of from 30 to 50 /5 cm.
Abstract:
A metallic cord is composed of metallic filaments (10) gathered together, the metallic filaments (10) include at least one patterned filament (10A) which is, before gathered together, two-dimensionally waved so as to have a wave form defined by plural kinds of cycles different from each other in respect of the wave length and/or wave height. A pneumatic tire (1) includes the metallic cords as its carcass cords.
Abstract:
A steel cord (10) adapted for the reinforcement of elastomeric products comprises a core and a layer arranged around the core. The core comprises one to four core filaments (12) and the layer comprises three to ten layer filaments (14). At least one of the core filaments (12) have a first wave form and at least one of the layer filaments (14) have a second wave form such that the first wave form is substantially different from said second wave form. This allows to control the size of the micro-gaps and to guarantee rubber penetration.
Abstract:
A steel cord (10) adapted for the reinforcement of elastomeric products comprises a core and a layer arranged around the core. The core comprises one to four core filaments (12) and the layer comprises three to ten layer filaments (14). At least one of the core filaments (12) have a first wave form and at least one of the layer filaments (14) have a second wave form such that the first wave form is substantially different from said second wave form. This allows to control the size of the micro-gaps and to guarantee rubber penetration.
Abstract:
A reinforcement ply (4) for an elastomeric article comprising a plurality of parallel extensible reinforcing members (7) laid at a substantially constant end count perpendicular to their longitudinal direction, characterised in that the ply (4) has different extensibilities in the longitudinal direction of the reinforcing members (7) in different parts of the ply. A method of making a reinforcement ply (4) for an elastomeric article comprising a plurality of parallel extensible reinforcing members wherein the ply has different extensibilities in the longitudinal direction of the reinforcing members in different parts of the ply, characterised by displacing a filament (20,30,56) of the reinforcing member perpendicularly from the longitudinal centreline (CCL) of the reinforcing member in at least one part of the reinforcing member compared to another part.
Abstract:
A steel cord (10) adapted for the reinforcement of an elastomer comprises steel filaments (12,14) of a pearlitic structure. The steel cord has a plastic and elastic elongation at break of x % and a plastic and elastic elongation capability in the vulcanized elastomer of y %, the values x and y fulfilling following equation : y - 0.50 ≤ x ≤ y + 0.50, which means that the total elongation at break does not reduce considerably after embedding the steel cord into an elastomer. The steel core (10) has a high elongation capability which is largely independent of the structure of the steel cord.
Abstract:
A steel cord for reinforcing a rubber product has a multilayer structure consisting of two or more layers including a core, or a structure consisting of seven or more strands twisted in the same direction at the same pitch. In the steel cord, at least one of three strands that are successively adjacent to one another or that are in mutual contact is formed of two filaments that are paired substantially parallel to each other. The direction of pairing the two filaments of each strand is substantially the same over the entire length of the cord. Each of the remaining strands is formed of a single filament. The steel cord is utilized in elastomeric products such as pneumatic radial tires as a reinforcing material so as to increase their durability.