Importance

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Abstract

A melt spinning apparatus is disclosed which comprises an elongate heating chamber having a generally U-shaped outline in cross section and so as to define two parallel leg sections of hollow, double wall construction, and an intermediate leg section extending between the two parallel leg sections which is also of hollow, double wall construction in several of the disclosed embodiments. A plurality of longitudinally spaced apart tubular nozzle casing receptacles extend vertically through the bottom one of said leg sections, and a pump block rests upon such bottom one of the leg sections so as to completely cover each of the casing receptacles. Each pump block includes a connecting plug aligned with each of the receptacles for releasably mounting a nozzle assembly within each of the receptacles, and the pump block is connected to a metering pump which is disposed between the parallel leg sections for pumping the melt through the melt supply lines of the pump block and to the nozzle assembly. In one embodiment, the parallel leg sections of the U-shaped heating chamber are disposed horizontally, and in another embodiment the parallel legs are disposed vertically. In each case, each nozzle assembly may be readily released from the associated connecting plug and withdrawn vertically downwardly through the associated receptacle.

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First Claim