Dziko la ma CD lakula mofulumira m'zaka zaposachedwa, ndi kuwonjezeka kwakukulu kwa kugwiritsa ntchito zipangizo zamakono zopangira katundu. Mwa zida izi, matumba oluka a PP atchuka kwambiri chifukwa cha kulimba kwawo, kusinthasintha, komanso kutsika mtengo. Matumbawa amagwiritsidwa ntchito kwambiri kulongedza zinthu zosiyanasiyana, kuphatikiza matumba a calcium carbonate, matumba a simenti, ndi matumba a gypsum.

Matumba opangidwa ndi PP amapangidwa kuchokera ku polypropylene, yomwe ndi polima ya thermoplastic yomwe imagwiritsidwa ntchito pazinthu zosiyanasiyana. Izi ndizokhazikika, zopepuka, komanso zosagwirizana ndi chinyezi, zomwe zimapangitsa kuti zikhale zoyenera kuyika zinthu zomwe zimafuna chitetezo ku chilengedwe chakunja. Matumba opangidwa ndi PP amasinthasinthanso, omwe amalola kuti agwiritsidwe ntchito pazinthu zosiyanasiyana zamitundu yosiyanasiyana komanso kukula kwake.

Chimodzi mwazinthu zomwe zimagwiritsidwa ntchito kwambiri ndi matumba oluka a PP ndikuyika calcium carbonate, yomwe imagwiritsidwa ntchito ngati chodzaza pazinthu zosiyanasiyana, kuphatikiza utoto, mapepala, ndi mapulasitiki. Matumba omwe amagwiritsidwa ntchito popakira calcium carbonate amapangidwa kuti azikhala okhuthala komanso amphamvu, chifukwa zinthuzi ndi zolemetsa ndipo zimafunikira thumba lolimba kuti liziyenda ndi kusunga.

Kugwiritsiridwa ntchito kwina kwa matumba opangidwa ndi PP ndi kulongedza simenti, yomwe ndi imodzi mwa zipangizo zomangira zomwe zimagwiritsidwa ntchito kwambiri padziko lonse lapansi. Matumba a simenti nthawi zambiri amapangidwa kuchokera ku kuphatikiza kwa nsalu zoluka za PP ndi pepala la kraft, zomwe zimapereka kulimba komanso chitetezo ku chinyezi. Matumbawa amapezeka mosiyanasiyana, kuyambira matumba ang'onoang'ono a mapulojekiti a DIY mpaka matumba akuluakulu a ntchito zomanga zamalonda.

Matumba opangidwa ndi PP amagwiritsidwanso ntchito kwambiri pakuyika gypsum, yomwe ndi mchere wofewa wa sulfate womwe umagwiritsidwa ntchito popanga zowuma ndi pulasitala. Matumba a gypsum amapangidwa kuti azikhala opepuka komanso osavuta kunyamula, chifukwa nthawi zambiri amagwiritsidwa ntchito m'malo omanga kumene antchito amafunika kusuntha zinthu zambiri mwachangu komanso moyenera. Matumbawa amakhalanso olimba, zomwe zimatsimikizira kuti gypsum imatetezedwa ku chilengedwe chakunja ndipo imakhalabe yokhazikika panthawi yoyendetsa ndi kusunga.

Pomaliza, matumba opangidwa ndi PP ndi chinthu chofunikira komanso chosunthika pantchito yonyamula katundu. Kukhalitsa kwawo, kusinthasintha, komanso kutsika mtengo kumawapangitsa kukhala chisankho chokongola pakulongedza zinthu zosiyanasiyana, kuphatikiza matumba a calcium carbonate, matumba a simenti, ndi matumba a gypsum. Kupanga zida zapamwamba komanso njira zopangira zatsopano zidzapitilira kupititsa patsogolo magwiridwe antchito komanso kusinthasintha kwa matumba oluka a PP, kuwapanga kukhala gawo lofunikira pamakampani azonyamula amakono.