Ngā pakaru oPaipa PEKo ngā hononga i te nuinga o te wā nā te kore e ranea te kaha ki te hua, te kore e ranea te whakakī rauemi, me te koretake o te hoahoa hua. He maha ngā wā ka puta ngā pakaru i te wāhanga matotoru he rite ki te pakitara angiangi. Ko ngā kōhao hau nā te kore e ranea te kirihou i roto i te kōhao pokepokea ai, ka whakamataohia te kirihou mowhiti o waho, ā, ka mimiti te kirihou o roto hei hanga i te korehau. Ko te nuinga o tēnei nā te kore e maroke pai ngā rauemi hygroscopic, me ngā monomers toenga me ētahi atu matū i roto i ngā rauemi.
Hei whakatau i te pūtake o ngā pūwero, me tirotiro noa mēnā ka puta wawe mai ngā mirumiru o ngā hononga paipa PE ina whakatuwheratia te pokepokea ai, i muri rānei i te whakamatao. Mēnā ka puta wawe mai i te whakatuwheratanga o te pokepokea ai, he raruraru nui te nuinga, engari ki te puta i muri i te whakamatao, he raruraru kei te pokepokea ai, kei te pokepokea ai rānei.

(1) Raruraru rauemi:

①Rauemi maroke ②Tāpirihia he hinu whakahinuhinu ③Whakaitihia te matū pupuhi i roto i te rauemi

(2) Ngā āhuatanga o te werohanga

①Kāore i te rawaka te rahinga werohanga; ②Whakanuia te pēhanga werohanga; ③Whakanuia te wā werohanga; ④Whakanuia te wā pēhanga katoa; ⑤Whakanuia te tere werohanga; ⑥Whakanuia te huringa werohanga; ⑦He rerekē te huringa werohanga nā ngā take whakahaere.

(3) Raru pāmahana

①Ka nui te mimiti o te rauemi ina wera rawa; ②Ka kore e ranea te whakakī me te whakakī o te rauemi ina makariri rawa; ③Ka kore e tere te totoka o te rauemi i te pakitara o te pokepoke ina teitei rawa te pāmahana pokepoke; ④Ka kore e ranea te whakakī o te pokepoke ina iti rawa te pāmahana pokepoke; ⑤He wāhi wera kei te pokepoke ⑥Hurihia te mahere whakamatao.

(4) Te raruraru o te pokepokea ai;

①Whakanuia te kēti; ②Whakanuia te kaikawe; ③Whakanuia te awa matua; ④Whakanuia te kōhao o te pūwero; ⑤Whakapai ake i te putanga hau o te pokepokea ai; ⑥Whakatauritea te tere whakakī pokepokea ai; ⑦Āraihia te aukati i te rere o te whakakī pokepokea ai; ⑧Whakaritea te whāngai kēti i te wāhanga matotoru o te hua; ⑨Mēnā ka taea, whakaitihia te rerekētanga o te matotoru o te pakitara o ngā hononga paipa PE; ⑩He rerekē te huringa werohanga i puta mai i te pokepokea ai.

(5) Ngā raruraru taputapu:

①Whakanuia te kaha whakakirikiri o te mīhini werohanga; ②Me whakarite kia noa te huringa werohanga;

(6) Te raruraru o te āhua whakamatao:

①TeNgā hononga paipa PEkia roa rawa te whakamatao i roto i te pokepokea ai kia kore ai e mimiti mai i waho ki roto, kia poto ai hoki te wā whakamatao o te pokepokea ai; ②Ka whakamataohia ngā hononga paipa PE ki te wai wera.