<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31299302</termId><termName>Mylar (TM)</termName><termType>PT</termType><termNote><![CDATA[ Registered trademark for a series of optically clear, colorless, thermoplastic polyester films. First introduced in the early 1950s, Mylar is composed of polyethylene terephthalate. ]]></termNote><termCreatedDate>2026-03-30 20:20:18</termCreatedDate><relation><relationType>UF</relationType><termId>31299303</termId><termName>Mylar film (TM)</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31299304</termId><termName>film, Mylar (TM)</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31297611</termId><termName>brand name materials</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31436391</termId><termName>polyethylene terephthalate</termName><termType>PT</termType></relation></term>  </Zthes>