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Propeller Head Plaza Technical and scientific discussion of amps, cables and other topics. |
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Propeller Head Plaza Technical and scientific discussion of amps, cables and other topics. |
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In Reply to: Why vinyl? posted by middleground on October 9, 2003 at 17:37:31:
Teflon is a trade name for a whole family of DuPont fluorocarbon compounds. PTFE (polytetrafluoroethylene) is the most common and the material usually thought of as Teflon. It is fairly tough, cold flows at high pressures of 1000-1500 psi (much lower than stylus contact pressures) and is made by sintering powder at high temperature and very high pressure. It also is not compatible with most of the aditives used in records. It would be very difficult to make records from. Vinyl as compounded for records is easy to mold at reasonable temperatures and pressures, and is easy to formulate. It's inexpensive, and gives a glassy smooth molded surface.Many years ago, there were some records made by Cook out of polyethylene. This was supposed to be a better material than vinyl. The ones I had were terrible. Noisy, poor wear characteristics, etc.
If you have warped records, have you ever tried flattening them? Place them between two sheets of plate glass under a heat lamp for a while, then let them cool between the plates to room temperature. This works quite well.
Jerry
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- Re: Why vinyl? - Bold Eagle 19:13:53 10/31/03 (0)
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