Nui nā ʻano lāʻau lapaʻau ma ka mākeke, e like me ka pulupulu maoli, styrene-butadiene rubber, butyl rubber, nitrile rubber, butadiene rubber a me recycled rubber, etc. I kekahi mau lā i hala aku nei, ua hele mai kahi mea kūʻai aku e nīnau i ke kumu o ka hana ʻana o nā huahana lāʻau me ka pulu ʻulaʻula, ka mea ma muli o ke koho hewa ʻana o ka lāʻau a i ʻole ke ʻano kūpono ʻole, ʻo kā mākou poʻe ʻenekinia e hoʻolauna i nā mea kūʻai aku, ʻo ka nui o ka waika ma ka nui o ka waika, aia kekahi mau hihia.

1, plasticizer: plasticizer i hoʻohui ʻia i ka hana ʻana i nā huahana recycled ua hoʻoheheʻe ʻia ma mua o ka hui ʻana, no laila i loko o ka vulcanized rubber e pīpī i ka uliuli; nui ka ʻaila hoʻoluʻu hydrocarbon ʻala (e like me ka ʻaila hoʻomaʻemaʻe ʻōpala, a me nā mea ʻē aʻe) i hoʻohui nui ʻia a maʻalahi hoʻi e hana i nā huahana pāpaʻi ʻulaʻula.

2, kalapona ʻeleʻele: i ka hana ʻana o ka kalapona ʻeleʻele kalapona ʻeleʻele i loko o nā molela nui o ka aromatic hydrocarbons ʻaʻole i hoʻopau piha ʻia, ʻo ke kūʻai ʻana o ia kalapona ʻeleʻele i hoʻohui ʻia i nā huahana lāʻau lapaʻau e maʻalahi ke pīpī i ka uliuli.

3, antioxidant: i ka hana ʻana i nā huahana lāʻau e hoʻohui a hoʻohana i ka antioxidant e like me ka nui o ka lāʻau lapaʻau a me ke kala o nā huahana lāʻau, antioxidant hoʻohui i ka nui o ka kala ʻeleʻele hoʻi e hoʻoulu ai i nā huahana lāʻau pulupulu, no laila ka nui o ka antioxidant.

4, ka wela vulcanization: no ka mea, o na hua pulupulu e hoohui maalahi polū additives, ma ka hui 'ana i ka wela kiʻekiʻe, maʻalahi e hana i ka vulcanized huahana pulupulu uliuli.

5, hui 'ole ka hui 'ana: i ka hui 'ana o ka hui 'ana o nā mea kōkua 'ole ma muli o ka 'ole o ka hui 'ana o ka lā'au i hui pū 'ia me ka 'ike 'ana o kekahi mau mea kōkua he ki'eki'e loa ke kumu o ka 'ili o nā huahana lā'au pulu.

E hō'alo i nā huahana lā'au e kāpīpī ana i ke ānuenue: e kūpono ke kumu kalapona kalapona; vulcanization nenoaiu e e iki excessive, e ho'āʻo e hoʻohui i emi ai ka momona, resin, stearic acid, etc.