The Applicant has now found that by selecting a suitable polyolefin material, in particular a copolymer of {HEAD ~ polypropylene} with {TAIL ~ a C4 C8} α olefin, it is possible to avoid or at least substantially reduce the above shape variations of the extruded component, in particular of a buffer tube containing optical fibers 
with
The Applicant has now found that by selecting a suitable polyolefin material , in particular a copolymer of { HEAD ~ polypropylene } with { TAIL ~ a C4 C8 } α olefin , it is possible to avoid or at least substantially reduce the above shape variations of the extruded component , in particular of a buffer tube containing optical fibers
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH