摘要:
A tennis racket with a more-responsive string configuration is an apparatus that allows a user to hit a tennis ball with spin and power in a controlled manner. The apparatus includes a closed-shape beam, a throat, an elongated handle, and a plurality of lines. The elongated handle allows the user to firmly grasp the apparatus, and the throat connects the elongated handle to the closed-shape beam. The plurality of lines is tensionably mounted within the closed-shape beam in order to provide the present invention with an elastic contact area for the tennis ball. Each of the plurality of lines includes a first string and a second string, which are positioned along each other for each of the plurality of lines. In addition, a lateral surface of the first string is positioned tangent to a lateral surface of the second string.
摘要:
A buffer layer is used to coat on the multi-filament wrapped string to fill the gaps. The polymers of the buffer-layer coating have a high melt-flow (low viscosity) during coating process to fill all the gaps between the filaments, and the filaments are fixed by the coatings onto base core materials. An outer protective coating is applied, which may comprise a composite nylon, clay nanoparticles, carbon nanotubes, an impact modifier, or any combination of the foregoing.
摘要:
Braided or twisted lines made from a) gel spun polyolefin yarns and b) at least one other yarn or monofilament are stretched to increase line tenacity. If desired, stretching conditions can also be chosen to significantly reduce the denier of the line.
摘要:
The present application of the invention aims at improving knot strength of a twisted yarn without compromising circularity, with respect to various yarns including a fishing line. For such purpose, the present application of the invention provides a yarn including a multifilament subjected to two twisting processes in different directions, and a coating resin that covers a surface of the multifilament; wherein the multifilament is subjected to a first twist in one direction, and then to a second twist in a direction opposite to that of the first twist, without being doubled with another yarn.
摘要:
A method of making colored monofilament ultrahigh molecular weight polyolefin fishing line, comprising the steps of feeding a substantially untwisted multifilament ultrahigh molecular weight polyolefin yarn; coating the substantially untwisted multifilament yarn with a colorant; twisting the coated multifilament yarn; and heating the twisted multifilament yarn to a temperature and for a time sufficient to at least partially fuse adjacent filaments together while stretching the yarn. The resultant product is a colored monofilament fishing line that has improved color-fastness and abrasion resistance.
摘要:
A woven or knitted fabric, formed from two types of yarns different in self-elongating property upon absorbing water and capable of increasing the opening area (%) when wetted with water compared with that in dry condition, is constituted so that a ratio A/B of a mean length A of yarns (1) having a high self-elongating upon absorbing water to a mean length B of yarns (2) arranged in the same direction as that of the yarn (1) and having a lower self-elongating upon absorbing water than that of the yarn (1) is adjusted to more than 0.9.
摘要:
A fishing line including a core of at least one multifilament yarn based on synthetic organic fibrous materials, and a casing formed from polytetrafluorethylene (PTFE) film tape which is wound around the core in the S direction and the Z direction or vice versa.
摘要:
A braided cord consisting of braided filaments or a twisted cord of filaments in which at least a part of the filaments are high tenacity multifilaments, and the rest of the filaments are monofilaments, which is preferably used as a serving for an archery bowstring.
摘要:
A fishing line includes a core portion composed of multiple Polyethylene wires and a coating is mounted to the core portion and combines the Polyethylene wires together. The coating is a mixture of Polyethylene having low fusing point, silicon resin and powder of hexamethylenebis-3-(3,5-ditertiarybutyl-4-hydroxyphenyl) propionamide. The Polyethylene is melted and the mixture is extruded to combine the Polyethylene wires. The coating is then cooled to solidify.