Umukandara wa pulasitiki uhuza umupira w’icyerekezo 400 uhoraho

Polyoxymethylene (POM),izwi kandi nka acetal, polyacetal, na polyformaldehyde, ni thermoplastic y’ubuhanga ikoreshwa mu bice by’ubuhanga bisaba gukomera cyane, gukururana guke no kudahindagurika neza mu bipimo. Kimwe n’izindi polymer nyinshi zikoze mu buhanga, ikorwa n’ibigo bitandukanye by’imiti bifite formula zitandukanye gato kandi ikagurishwa mu buryo butandukanye n’amazina nka Delrin, Kocetal, Ultraform, Celcon, Ramtal, Duracon, Kepital, Polypenco, Tenac na Hostaform.

POM irangwa n'imbaraga zayo nyinshi, ubukana bwayo no gukomera kwayo kugeza kuri -40 °C. POM ni umweru udasobanutse neza bitewe n'imiterere yayo myinshi ya kristali ariko ishobora gukorwa mu mabara atandukanye. POM ifite ubucucike bwa 1.410–1.420 g/cm³.

Polypropylene (PP),izwi kandi nka polypropene, ni polymeri ya thermoplastic ikoreshwa mu bintu bitandukanye. Ikorwa binyuze mu gupima umuyoboro w'uruhererekane uva muri monomer propylene.

Polypropylene iri mu itsinda rya polyolefins kandi ifite ishusho ya kristale imwe kandi ntigira polari. Imiterere yayo isa na polyethylene, ariko irakomeye gato kandi irinda ubushyuhe. Ni igikoresho cy'umweru, gikomeye kandi gifite ubushobozi bwo kurwanya uburozi bwinshi.

Nayiloni 6 (PA6)cyangwa polycaprolactam ni polymer, cyane cyane polyamide ya semicrystalline. Bitandukanye n'izindi nylon nyinshi, nylon 6 si polymer ya condensation, ahubwo ikorwa na polymerization ifunguye impeta; ibi bituma iba urugero rudasanzwe mu kugereranya condensation na addition polymers.