TH9243B - Long fiber reinforced thermoplastic frame specially for tennis racket. - Google Patents

Abstract

Long fiber reinforced thermoplastic frames for racquets or other equipment consisting of carbon fiber or other reinforcing material. which are arranged at the desired angle and are tightly structured in a thermoplastic resin frame according to this invention. They are made by folding together or a combination of carbon fiber or other types of fiber reinforced with fibers of thermoplastic materials. or by fiber pre-coating, thermoplastic powder fiber, which should be woven into a scabbard for ease of operation They are placed in an internally heated and pressurized template to align with the template and so that the molten thermoplastic and flow are firmly in contact with the fiber material. This fabricated frame achieves the strength and stiffness of a long fiber thermoset frame, but unlike a dynamically rigid thermoset frame. Due to the viscous elastic properties of thermoplastic resins

Claims (1)

1.How to make a frame for no hit used in sports That consists of steps Combining a number of long reinforced fibers With thermoplastic materials in a flexible and dry form To form flexible fibers groups Forming a flexible sheath from at least one group of fiber and thermoplastic fiber clusters combined. Where the fiber is positioned at at least one selected angle. The placement of the casing into a template shaped like a racquet frame used in sports. Heating the casing to the thermoplastic melting point While providing internal pressure to the said casing Until the thermoplastic flows between the fibers And the casing according to the template shape and the cooling of the casing To solidify the thermoplastic material While maintaining the internal pressure 2. Method according to claim 1, where thermoplastic materials are in the form of a number of flexible thermoplastic fibers, where fibers and fibers are combined. To form at least one fiber group And where the sheath is formed from at least one of the aforementioned fibers 3. Method according to claim 2, where the sheath is formed by knitting at least one fiber group. 4. Method according to claim 3, where fibers and fibers are intertwined together to form such a fiber bundle. 5. Method for claim 3, where fiber and fibers are mixed together. To form such a group of fibers 6.Method according to claim 1, where the thermoplastic material is in powder form and where the fiber is immersed in the fluidized bed of the thermoplastic powder. To form a fiber bundle of fibers coated with a powder material. And where the fibers of the fiber coated with at least one powder material are applied to the decal. 7.Method of claim 6, where the sleeve is formed by knitting at least one fiber group. 8. Method for claim 1, where the sheath contains at least one helical-stranded fiber group. 9. Method according to claim 8, where the sheath is composed of at least one transverse fiber group. The helicon is wound in the opposite direction to one such group. 1 0. The method of claim 9 consists of another sheath forming process. Consisting of a transverse and a string of elixated fibers And place one of them inside the other before placing them into the template. To create a multi-layered frame 1 1. Method according to claim 10, where one sheath-forming fiber group is wound at a different angle from another sheath forming fiber group.