ko te rauemi Prepreg
Ko te pūnaha prepreg he whakamua paihere i te ao o te hanganga mōhiohia, e whai ake ana i ngā whakapiki tukituki i mua ai ki te rākau hohoro. Kei roto i tēnei pūnaha matatika, ko ngā āhuatanga whakatikahanga o ngā tukituki me ngā āhuatanga kawe o ngā rākau i tahi whakarite hei whakamahi. Ko te mahi hanga e whai ake nei i te whakauru pai o ngā uiui ki ngā rākau, e whai ana i te paunga katoa o ngā poaka, e whaiwhai ana i te pai me te kanorau i roto i ia poaka. E hangaia ana ngā prepreg hei whakamahia i te wā tonu, ka whai ake i te wā hanga me te tirotiro, ā, ka whai ake i ngā āhuatanga mekanika pai i roto i ngā whakamahi tuatahi. Ko te whanaketanga o te pūnaha kei tōna tūmomo, ka taea te whakapā mai i ngā rautaki whakarerekē, ahakoa kia mau tonu te whakaititia. He uiui nui ngā tukituki e whai ake nei, ko te kāpona, ko te kāreki, ko te aramida, ināianei ko ngā āhuatanga whakahaere pai e whai ake nei. Ka whakatakotoria ngā rākau hei whakamahi pai i te wā whakamutu, me ngā āhuatanga tuatahi. Me te tūnga i ngā wāhi tūrua, ko ngā prepreg e hiahia ana ki te tirotiro i te wā e whai ake nei, ā, kaore i te whakamutu mōwaho. I te wā whakamahi, ka taea te whakahaere i ngā momo katoa, ināianei ko te whakamutu i te autoclave, ko te whakapī i te āporo, ko te whakahaere i te whatu. Ko te āhua o te pūnaha ki te whakamana i ngā hua pai ka whai ake i te whai mana i ngā whenua e hiahia ana ki te pai me te tūrongo, pēnei i te rorohiko, i te motokā, me ngā taonga porihanga.
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