He aha nā ʻano hana o nā mea hollow blow molding?

ʻO ke kumu hana o nā mea hana hollow blow molding a me kāna ʻano hana hoʻoheheʻe ʻia ʻO ka mea i kapa ʻia ʻo blow molding machine i kapa ʻia ʻo ia hollow blow molding machine.Hoʻoheheʻe ʻia ka plastic a hoʻoheheʻe nui ʻia i loko o ka extruder screw, a laila hana ʻia ma o ke kiʻi waha, a laila hoʻomaha ʻia e ke apo ea, a laila puhi ʻia i loko o ka pā.ʻO kahi ʻano hana hana plastik e ulu wikiwiki ana.Hoʻokomo ʻia ka parison plastic tubular ma ka extrusion a i ʻole ka hoʻoheheʻe ʻia ʻana o ka resin thermoplastic i loko o kahi ʻāpana ʻāpana ʻoiai e wela ana (a i ʻole ka wela i kahi kūlana palupalu), a hoʻokomo ʻia ka ea paʻa i loko o ka parison ma hope koke o ka pani ʻana i ka mold e puhi i ka parison plastik. .Hoʻonui ia a pili kokoke i ka paia o loko o ka mold, a ma hope o ka hoʻoilo a me ka demoulding, loaʻa nā huahana hollow like ʻole.

Hoʻomaka ka mīkini hoʻoheheʻe ʻana e hana i nā hue polyethylene haʻahaʻa haʻahaʻa i ka wā o ke Kaua Honua II.I ka hopena o 1950s, me ka hānau ʻana o ka polyethylene kiʻekiʻe kiʻekiʻe a me ka hoʻomohala ʻana i nā mīkini hoʻoheheʻe puhi, ua hoʻohana nui ʻia ka ʻenehana o nā mīkini hoʻoheheʻe.Hiki i ka nui o nā ipu hollow ke hiki i nā tausani lita, a ua hoʻomalu ʻia kekahi hana e nā kamepiula.ʻO nā plastik kūpono no ka puhi ʻana he polyethylene, polyvinyl chloride, polypropylene, polyester, a me nā mea ʻē aʻe.

Hoʻolauna i ke ʻano hana hollow blow molding:

Ma muli o nā ʻokoʻa o nā mea maka, nā koi hoʻoili, nā huahana a me nā kumukūʻai, ʻokoʻa nā ʻano hana hoʻoheheʻe ʻana i nā pono like ʻole i ka hana ʻana i nā huahana like ʻole.

ʻO ka hoʻoheheʻe ʻana o nā huahana hollow he ʻekolu mau ala nui:

1. Extrusion blow molding: hoʻohana nui ʻia no ka hana parison i kākoʻo ʻole ʻia;

2. Injection blow molding: hoʻohana nui ʻia no ka hana parison i kākoʻo ʻia e ke kumu metala;

3. ʻO ka hoʻoheheʻe ʻana i ka puhi ʻana: me ka hoʻoheheʻe extrusion-stretch-blow molding, injection-stretch-blow molding ʻelua ʻano, hiki ke hana i nā huahana biaxially, hoʻemi nui i nā kumukūʻai hana a hoʻomaikaʻi i ka hana huahana.

Eia kekahi, aia ka nui-layer blow molding, compression blow molding, dip coating blow molding, foam blow molding, ekolu-dimensional blow molding, etc. , a he 1% kekahi mau mea hoolele puhi;ma waena o nā huahana hoʻoheheʻe puhi, 75% no nā huahana biaxially.ʻO nā mea maikaʻi o ka extrusion blow molding ka hana kiʻekiʻe o ka hana, nā kumukūʻai haʻahaʻa haʻahaʻa, ke koho ākea o nā mold a me nā mīkini, a ʻo nā hemahema he kiʻekiʻe kiʻekiʻe o ka scrap rate, maikaʻi ʻole ka hana hou ʻana a me ka hoʻohana ʻana i ka ʻōpala, ka mana mānoanoa o ka huahana, a me ka dispersibility waiwai.Ma hope o kēlā, pono e hoʻokō i ka hana trimming.ʻO ka pōmaikaʻi o ka hoʻoheheʻe ʻana i ka injection ʻaʻohe mea ʻino i ke kaʻina hana, a hiki ke hoʻomalu maikaʻi ʻia ka mānoanoa pā o ka huahana a me ka hoʻopuehu ʻana o ka mea.ʻO ka hemahema, ʻo ia ke kumukūʻai o nā mea hana hoʻoheheʻe ʻia a i kekahi ʻano kūpono wale nō no nā huahana pā liʻiliʻi.

ʻO nā kūlana kaʻina o ka hollow blow molding pono e maʻemaʻe ka ea i hoʻonui ʻia i ka parison i loko o ka mold.ʻO ke kaomi o ka ea no ka hoʻoheheʻe ʻana i ka puhi ʻana he 0.55 a 1 MPa;ʻO ke kaomi no ka hoʻoheheʻe extrusion he 0.2l i ka 0.62 MPa, a ʻo ke kaomi ʻana no ka hoʻoheheʻe ʻana i ka puʻu e koi pinepine ʻia e like me 4 MPa.I ka paʻa ʻana o nā plastics, ʻo ka haʻahaʻa haʻahaʻa e hoʻohaʻahaʻa i ke koʻikoʻi o loko o ka huahana, ʻoi aku ka lōkahi o ke kaumaha, a hiki i ka haʻahaʻa haʻahaʻa ke hoʻomaikaʻi i ka tensile, hopena, kulou a me nā waiwai ʻē aʻe o ka huahana.