1. Chiyerekezo cha kuponderezana kwa screw single extruder screw ndi yoyenera pakati pa 1: 2-1: 3, makamaka 1: 2.5, ndipo kutalika koyenera mpaka m'mimba mwake kwa wononga magawo atatu ndi 25. Mapangidwe abwino a wononga amatha kupewa zinthu. kuwonongeka ndi kusweka chifukwa cha kukangana kwakukulu. Kungoganiza kutalika kwa screw ndi L, gawo la chakudya ndi 0.3L, gawo lopondereza ndi 0.4L, gawo la mita ndi 0.3L, ndipo kusiyana pakati pa mbiya ndi screw ndi 0.1-0.2mm. Chisa cha uchi chomwe chili pamutu pa makinawo chiyenera kukhala ndi mabowo 1.5-5mm, pogwiritsa ntchito zosefera ziwiri za 400 hole/cmsq (pafupifupi mauna 50). Mukatulutsa zingwe zowonekera pamapewa, mota yokwera pamahatchi nthawi zambiri imafunika kuti injiniyo isayime kapena kuyaka chifukwa chakuchulukirachulukira. Nthawi zambiri, zomangira za PVC kapena BM zilipo, koma zomangira zazifupi za gawo la compression sizoyenera.
2. Kutentha kwa kuumba kumadalira zipangizo za opanga osiyanasiyana, ndipo kuuma kwapamwamba, kumawonjezera kutentha kwa extrusion. Kutentha kwa processing kumawonjezeka ndi 10-20 ℃ kuchokera ku gawo lodyetsa kupita ku gawo la metering.
3. Ngati liwiro la screw liri lothamanga kwambiri ndipo kukangana kumatenthedwa chifukwa cha kumeta ubweya wa ubweya, kuthamanga kwa liwiro kuyenera kuyendetsedwa pakati pa 12-60rpm, ndipo mtengo weniweni umadalira screw diameter. Kukula kwake kumapangitsa kuti liwiro liziyenda pang'onopang'ono. Chilichonse ndi chosiyana ndipo chidwi chiyenera kuperekedwa ku zofunikira zaumisiri za wogulitsa.
4. Musanagwiritse ntchito, screw iyenera kutsukidwa bwino, ndipo PP kapena HDPE ingagwiritsidwe ntchito poyeretsa pa kutentha kwakukulu. Zoyeretsa zimatha kugwiritsidwanso ntchito poyeretsa.
5. Mapangidwe a mutu wa makina ayenera kusinthidwa ndipo pasakhale ngodya zakufa kuti zitsimikizire kuyenda bwino kwa zinthu. Mzere wonyamulira wa manja a nkhungu ukhoza kukulitsidwa moyenerera, ndipo ngodya pakati pa manja a nkhungu idapangidwa kuti ikhale pakati pa 8-12 °, yomwe ili yoyenera kwambiri kuchepetsa kumeta ubweya wa ubweya, kuteteza zitosi za maso panthawi yopanga, ndikukhazikika kwa extrusion. kuchuluka.
6. TPU ili ndi coefficient yapamwamba ya kukangana ndipo ndizovuta kupanga. Kutalika kwa thanki yamadzi ozizira kuyenera kukhala yayitali kuposa zida zina za thermoplastic, ndipo TPU yokhala ndi kuuma kwakukulu ndiyosavuta kupanga.
7. Waya wapakati uyenera kukhala wouma komanso wopanda banga lamafuta kuti tipewe thovu chifukwa cha kutentha. Ndipo onetsetsani kuphatikiza bwino.
8. TPU ndi m'gulu la zipangizo mosavuta hygroscopic, amene mofulumira kuyamwa chinyezi pamene anaika mu mlengalenga, makamaka pamene ether zochokera zipangizo ndi hygroscopic kuposa zipangizo poliyesitala. Choncho, m'pofunika kuonetsetsa kusindikiza bwino. Zida zimakhala zosavuta kuyamwa chinyezi pansi pa kutentha, choncho zipangizo zotsalira ziyenera kusindikizidwa mwamsanga mutatha kulongedza. Yang'anirani chinyezi chomwe chili pansi pa 0.02% panthawi yokonza.
Nthawi yotumiza: Aug-30-2023