Kodi mpanda wa PVC umapangidwa bwanji? Kodi chimatchedwa chiyani Extrusion?

Mpanda wa PVC umapangidwa ndi makina otulutsira zingwe ziwiri.

Kutulutsa PVC ndi njira yopangira mwachangu kwambiri pomwe pulasitiki yosaphika imasungunuka ndikupanga mawonekedwe aatali opitilira. Kutulutsa kumapanga zinthu monga ma profiles apulasitiki, mapaipi apulasitiki, njanji za PVC deck, mafelemu a zenera a PVC, mafilimu apulasitiki, mapepala, mawaya, ndi ma profiles a PVC fence, zomwe zimagwiritsidwa ntchito kwambiri m'magawo ambiri.

Njira yotulutsira madzi imayamba poika PVC kuchokera pa hopper kupita mu mbiya ya extruder. Phalalo limasungunuka pang'onopang'ono ndi mphamvu yamakina yopangidwa ndi zomangira zozungulira komanso ndi zotenthetsera zomwe zimayikidwa m'mbiya. Kenako polima wosungunukayo amakakamizidwa kulowa mu die, kapena wotchedwa extrusion molds, zomwe zimapangitsa kuti PVC ikhale ndi mawonekedwe enaake, monga mpanda wa mpanda, njanji ya mpanda, kapena ma picket a mpanda omwe amauma panthawi yozizira.

Potulutsa PVC, zinthu zopangira zinthu nthawi zambiri zimakhala ngati ufa womwe umaperekedwa kuchokera ku hopper yokwezedwa pamwamba kupita ku mbiya ya extruder. Zowonjezera monga pigment, UV inhibitors ndi PVC stabilizer nthawi zambiri zimagwiritsidwa ntchito ndipo zimatha kusakanizidwa mu resin isanafike ku hopper. Chifukwa chake, pankhani yopanga mpanda wa PVC, tikupangira makasitomala athu kuti azikhala ndi mtundu umodzi wokha mu dongosolo limodzi, apo ayi mtengo wosinthira mawonekedwe a extrusion ungakhale wokwera. Komabe, ngati makasitomala ayenera kukhala ndi ma profiles amtundu umodzi mu dongosolo limodzi, tsatanetsatane ukhoza kukambidwa.

Njirayi imafanana kwambiri ndi kupanga pulasitiki pogwiritsa ntchito ukadaulo wa extruder, ngakhale kuti nthawi zambiri imakhala yopitilira. Ngakhale kuti pultrusion ingapereke ma profiles ambiri ofanana m'litali lopitirira, nthawi zambiri ndi kuwonjezera mphamvu, izi zimachitika potulutsa chinthu chomalizidwa kuchokera mu nkhungu m'malo motulutsa polima yosungunuka kudzera mu nkhungu. Mwanjira ina, kutalika kwa mawonekedwe a mpanda, monga nsanamira, njanji, ndi ma picket, zonse zimatha kusinthidwa m'litali linalake. Mwachitsanzo, mpanda wachinsinsi wonse ukhoza kukhala wamtali wa 6ft ndi 8 ft m'lifupi, ukhozanso kukhala wamtali wa 6ft ndi 6 ft m'lifupi. Makasitomala athu ena, amagula zipangizo zopangira mpanda, kenako n’kudula m'litali linalake mu workshop yawo, ndikupanga mipanda yosiyanasiyana kuti ikwaniritse zosowa za makasitomala awo onse.