Abstract:
A plain stepped splice lay-out scheme is presented that can be used for splicing strips to one another that comprise longitudinally arranged cords. The strips can take the form of a conveyor belt, transmission belt, timing belt, elevator belt, a rubber track or a reinforcing strip. The splice is optimised for uniform bending stiffness and maximum strength retention. The cross section of the strip and the splice are substantially equal: there is no increase in thickness or width at the splice. The splice lay-out is characterised by the fact that the abutments (130) -those positions where cord ends (111, 121) meet -are positioned sufficiently far away from one another and by preference as far away from one another as possible. Preferred embodiments in terms of length common between cords of the different strips and local strength are given.
Abstract:
The invention relates a cord for the reinforcement of a cementitious matrix. The cord comprises number of coated metal filaments twisted together to form a cord. The cord shows cross-sections, whereby three or more of the filaments form a closed sub-structure having a void in the middle of the three or more filaments. The cord further comprises a protective compound whereby the protective compound is at least present in said void. The protective compound gives the coated metal element cathodic protection. The invention further relates to a structure comprising a number of cords such as a knitted, a braided, a welded or a glued structure. Furthermore the invention relates to a cementitious matrix reinforced with a cord according to the present invention and to a method to inhibit hydrogen gas evolution at the interface of a cord embedded in a cementitious matrix.
Abstract:
A binding element for a building wall structure, wherein said binding element comprises an elongated steel element coated with a thermoplastic material, and wherein the coated thermoplastic material has a uniform thickness on each straight portion of the elongated steel element. The building wall structure comprising an inner wall, an outer wall spaced from said inner wall and provided with at least one insulation layer(s) in between, at least one binding element comprising an elongated steel element coated with a thermoplastic material interconnecting said outer wall and inner wall through the insulation layer, wherein ends of said binding element is fixed to the said outer wall and said inner wall respectively and wherein middle portion of said binding element is in contact with the said insulation layer(s). The binding element may comprise a intermediate metallic coating selected from a group consisting of copper, copper alloy, zinc, zinc alloy, nickel, nickel alloy, tin or tin alloy or combinations thereof.
Abstract:
A braided structure (10) comprises at least two groups of elongated elements (12, 14) which have been braided with each other to form the braided structure. At least one of the groups comprise steel wires or steel cords (12, 14). The structure (10) comprises a longitudinal axis (11) and has a total length over its longitudinal axis (11). The structure has one of these two groups revolving in a first direction around the longitudinal axis (11). A first subgroup of individual elongated elements (12) belonging to one of the groups is spaced from a neighboring second subgroup of individual elements (12') belonging to the same of the groups with an inter-distance (13) that is greater than half the average element diameter of the individual elongated elements at a braiding angle β of 45 degrees. This inter-distance 13 allows change of cross-sectional geometry of the braided structure (10).
Abstract:
A splice is described for jointing thermoplastic strips that comprise steel cords. In the splice a splice polymer is used that is a mixture of a co-polymer and a base polymer, wherein the co-polymer is a grafted co-polymer, a block co-polymer or a random co-polymer functionalised for enabling adhesion to the steel cords. Particular about the inventive splice is that the amount of co-polymer in the base polymer is such that in a test-till-break of a splice, part of the steel cords fracture in the test while the remaining cords are pulled out of the polymer without breaking. Surprisingly, a splice with such a failure behaviour results in a better overall splice strength than a splice wherein a too large amount of co-polymer is added. When too much co-polymer is added all steel cords break in the test which strangely enough leads to a lower overall strength of the splice.
Abstract:
The invention relates to a method to manufacture a rotatable sputter target. The method comprises the steps of - providing a backing tube; - providing a target material on the backing tube by coiling at least one elongated member around the backing tube; - providing an outer material on top of the target material; - applying heat and/or pressure to the outer material and/or to the backing tube; - removing the outer material.