| 摘要 |
<p>The present invention relates to a method for manufacturing at least a portion of a sports racquet frame that comprises a step a) of providing a mouldable tube 5 structure containing a first inflatable bladder and a second inflatable bladder. The first and second inflatable bladders are positioned on opposite first and second regions of the mouldable tube structure. At an intermediate region, the tube structure comprises one or 10 more cross channels, which pass through the mouldable tube structure. The method according to the present invention comprises also a further step b) of inserting said tube structure inside a mould forming a mould cavity of a desired shape. Mould members are inserted into the cross 15 channels of the tube structure, so that the outer surface of the mould member faces the inner surface of the corresponding cross channel. The mould members have position and orientation that correspond to the position and orientation, along the string bed plane, of the string 20 port holes, which are to be formed on said frame portion. The method, according to the present invention, comprises also a step c) of pressurizing the first and second bladders, so that the tube structure conforms to the shape of the mould, and heating the mould, so that the tube 25 structure cures. The method, according to the present invention, comprises a further step d) of removing the cured tube structure from the mould cavity and removing the mould members from the cross channels. H:/SueB/Keep/speci/P63358.doc 13/02/07 CC/J c,) c'Ji (NN</p> |
