<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31340108</termId><termName>foam rubber</termName><termType>PT</termType><termNote><![CDATA[ Light spongy rubber made by mechanically whipping air into the rubber latex prior to curing. It is used for mattresses, cushions, and insulation. Foam rubber turns yellow and becomes powdery when exposed to sunlight. ]]></termNote><termCreatedDate>2026-03-30 20:31:43</termCreatedDate><relation><relationType>UF</relationType><termId>31340109</termId><termName>foamed rubber</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31340110</termId><termName>rubber, foam</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31340111</termId><termName>sponge rubber</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31316724</termId><termName>elastomer by form</termName><termType>PT</termType></relation></term>  </Zthes>