Ko ngā matū PVC e hangai ana i te whakakotahitanga o te polymer PVC RESIN me ngā tāpiringa e homai ana i te whakatakotoranga e tika ana mō te whakamahinga whakamutunga (ngā Paipa, ngā Kōtaha Pakari, ngā Kōtaha Ngāwari, ngā Rau rānei). Ka hangaia te matū mā te whakaranu piri i ngā kai, ā, ka hurihia hei mea "whakakī" i raro i te awe o te wera me te kaha kutikuti. I runga i te momo PVC me ngā tāpiringa, ko te matū i mua i te whakakī ka taea te waiho hei paura rere noa (e mōhiotia ana ko te ranunga maroke) he wai rānei i te āhua o te whakapiri, o te otinga rānei.
Ina hangaia ngā matū PVC mā te whakamahi i ngā mea hanga kirihou, hei rauemi ngāwari, e kiia nei ko te PVC-P.
Ko ngā matū PVC ina hangaia me te kore he mea hanga kirihou mō ngā mahi pakari ka tapaina ko te PVC-U.
Ka taea te whakarapopoto i te hanganga PVC penei:
Me whakaranu kaha te paura ranunga maroke PVC pakari (e kiia nei ko te Resin), kei roto hoki ētahi atu rauemi pēnei i ngā mea whakau, ngā tāpiri, ngā whakakī, ngā whakakaha, me ngā mea ārai mura, ki roto i te mīhini whakaranu. He mea nui te whakaranu marara me te whakaranu tohatoha, ā, me tutuki katoa ngā herenga pāmahana kua tautuhia pai.
E ai ki te hanganga, ka whakauruhia te kapia PVC, te mea hanga kirihou, te whakakī, te mea whakau me ētahi atu mea āwhina ki roto i te ranunga wera. I muri i te 6-10 meneti, tukuna ki roto i te ranunga matao (6-10 meneti) hei whakaranu tuatahi. Me whakamahi te ranunga PVC i te ranunga matao kia kore ai e piri ngā rauemi i muri i te whakaranu wera.
I muri i te whakakirikiri, te whakaranu me te horapa ōrite i te pāmahana tata ki te 155°C-165°C, ka whāngaihia te ranunga ki te ranunga makariri. Kātahi ka whakapūpūhia te ranunga PVC rewa ki te pūpū. I muri i te whakapūpū, ka taea te whakaheke i te pāmahana o ngā pūpū ki te 35°C-40°C. Kātahi, i muri i te tātari wiri whakamatao-hau, ka heke te pāmahana o te matūriki ki raro i te pāmahana rūma hei tuku ki te whare pupuri hua whakamutunga mō te tākai.
Wā tuku: Whiringa-ā-rangi 11-2022