Ka nānā 'ana i nā mea ho'oikaika nui i ka waiwai kino o nā lole spunbond nonwoven

I ke kaʻina hana o ka lole spunbond nonwoven, hiki i nā mea like ʻole ke hoʻopilikia i nā waiwai kino o ka huahana. ʻO ke kālailai ʻana i ka pilina ma waena o kēia mau mea a me ka hoʻokō huahana hiki ke kōkua i ka hoʻomalu pono ʻana i nā kūlana kaʻina hana a loaʻa i nā huahana lole polypropylene spunbond non-woven kiʻekiʻe. Maʻaneʻi, e kālele mākou i nā kumu nui e hoʻohuli ai i nā waiwai kino o nā lole spunbond nonwoven a kaʻana like me kēlā me kēia.

Hoʻoheheʻe helu a me ka puunaue kaumaha molekala o nā ʻāpana polypropylene

ʻO nā hōʻailona koʻikoʻi nui o nā ʻāpana polypropylene ʻo ke kaumaha molekala, ka hāʻawi ʻana i ke kaumaha mole, isotropy, melt index, a me ka ʻike lehu. ʻO ke kaumaha o ka molecular o PP chips i hoʻohana ʻia no ka wili ma waena o 100000 a me 250000, akā ua hōʻike ka hoʻomaʻamaʻa ʻana i nā waiwai rheological o ka heheʻe ʻoi aku ka maikaʻi i ka wā o ke kaumaha o ka polypropylene ma kahi o 120000, a ʻoi aku ka kiʻekiʻe o ka wikiwiki o ka milo. ʻO ka helu heheʻe he ʻāpana e hōʻike ana i nā waiwai rheological o ka heheʻe, a ʻo ka helu heheʻe o nā ʻāpana polypropylene i hoʻohana ʻia ma ka spunbond ma waena o 10 a me 50. I ke kaʻina o ka milo i loko o ka pūnaewele, loaʻa i ka filament hoʻokahi kikoʻī o ke kahe o ka ea, a ua kaupalena ʻia ka lākiō kikoo o ka filament e nā waiwai rheological o ka heheʻe. ʻO ka nui o ke kaumaha molekala, ʻo ia hoʻi, ʻoi aku ka liʻiliʻi o ka helu heheʻe, ʻoi aku ka maikaʻi o ka kahe ʻana, a ʻoi aku ka liʻiliʻi o ka lākiō kikoo i loaʻa i ke filament. Ma lalo o nā kūlana like o ka hoʻoheheʻe ʻana mai ka nozzle, ʻoi aku ka nui o ka nui o ka fiber o ka filament i loaʻa, ʻoi aku ka paʻakikī o ka lima no nā lole spunbond nonwoven. Inā kiʻekiʻe ka helu hoʻoheheʻe, emi ka viscosity o ka heheʻe, maikaʻi nā waiwai rheological, hoʻemi ke kū'ē i ka hoʻolōʻihi ʻana, a ma lalo o nā ʻano kikoʻī like, piʻi ka lakene hoʻolōʻihi. Ke piʻi aʻe ka pae kuhikuhi o nā macromolecules, e piʻi pū ka ikaika haʻihaʻi o ka lole spunbond nonwoven, a e emi ka fineness o nā filament, e hopena i ka lima palupalu o ka lole. Ma lalo o ke kaʻina hana hoʻokahi, ʻoi aku ka kiʻekiʻe o ka melt index o polypropylene, ʻoi aku ka liʻiliʻi o kona fineness a ʻoi aku ka ikaika o ka haki.

Ana pinepine 'ia ka puunaue kaumaha mole e ka ratio o ka awelika kaumaha molecular weight (Mw) i ka helu awelika kaumaha mole (Mn) o ka polymer (Mw/Mn), i ikeia ma ke ano he molecular distribution value. ʻOi aku ka liʻiliʻi o ka waiwai o ka hāʻawi ʻana i ke kaumaha o ka molekala, ʻoi aku ka paʻa o nā waiwai rheological o ka heheʻe, a ʻoi aku ka paʻa o ke kaʻina wili, ʻo ia ka mea e hoʻomaikaʻi ai i ka wikiwiki o ka milo. Loaʻa iā ia ka haʻahaʻa hoʻoheheʻe haʻahaʻa a me ka tensile viscosity, hiki ke hōʻemi i ke koʻikoʻi o ka milo ʻana, e maʻalahi ka PP e hoʻolōʻihi a lilo i ʻoi aku ka maikaʻi, a loaʻa i nā fibers. Eia kekahi, maikaʻi ke kūlike o ka pūnaewele, me ka manaʻo lima maikaʻi a me ke kūlike.

Ka wela wili

ʻO ka hoʻonohonoho ʻana o ka mahana wili e pili ana i ka helu heheʻe o nā mea maka a me nā koi no nā waiwai kino o ka huahana. ʻO ke kiʻekiʻe o ka helu heheʻe o ka mea maka, ʻoi aku ka kiʻekiʻe o ka mahana wili, a ʻo ia hoʻi. Pili pono ka mahana wili i ka viscosity o ka heheʻe, a haʻahaʻa ka mahana. He kiʻekiʻe ka viscosity o ka hoʻoheheʻe ʻana, e paʻakikī ai ka wili a hiki i ka hana ʻana i nā fila haʻihaʻi, ʻoʻoleʻa a paʻa paha, e pili ana i ka maikaʻi o ka huahana. No laila, i mea e hōʻemi ai i ka viscosity o ka heheʻe a hoʻomaikaʻi i kāna mau waiwai rheological, ʻae ʻia ke ʻano o ka hoʻonui ʻana i ka mahana. He hopena koʻikoʻi ka mahana wili i ke ʻano a me nā waiwai o nā fiber. ʻO ka haʻahaʻa o ka wela o ka wili, ʻoi aku ka kiʻekiʻe o ka viscosity o ka hoʻoheheʻe ʻana, ʻoi aku ka nui o ke kūpaʻa ʻana, a ʻoi aku ka paʻakikī o ke kikoo ʻana i ke filament. No ka loaʻa ʻana o nā fibers o ka maikaʻi like, pono e kiʻekiʻe ka wikiwiki o ka lele ʻana o ka ea i nā haʻahaʻa haʻahaʻa. No laila, ma lalo o nā kūlana kaʻina like, i ka wā e haʻahaʻa ai ka mahana wili, paʻakikī ke kikoo i nā fibers. He kiʻekiʻe ka fineness a me ka haʻahaʻa molecular orientation ka fiber, i hōʻike ʻia i nā lole spunbond nonwoven me ka ikaika haʻahaʻa haʻahaʻa, elongation kiʻekiʻe i ka wā haki, a me ka lima paʻakikī; Ke kiʻekiʻe ka wela o ka wili, ʻoi aku ka maikaʻi o ka hoʻolōʻihi ʻana o ka fiber, ʻoi aku ka liʻiliʻi o ka fiber fineness, a ʻoi aku ka kiʻekiʻe o ka molecular orientation. Hōʻike ʻia kēia i ka ikaika haʻi kiʻekiʻe, ka elongation haʻihaʻi liʻiliʻi, a me ka lima palupalu o nā lole spunbond nonwoven. Eia nō naʻe, pono e hoʻomaopopo ʻia ma lalo o kekahi mau kūlana hoʻoluʻu, inā kiʻekiʻe loa ka wela o ka wili, ʻaʻole e maʻalili ka filament hopena i kahi manawa pōkole, a hiki ke haki kekahi mau fibers i ka wā o ke kaʻina hana, hiki ke hana i nā hemahema. I ka hana maoli, pono ke koho ʻia ka mahana wili ma waena o 220-230 ℃.

Kūlana hoʻoluʻu

He hopena koʻikoʻi ka hoʻoluʻu ʻana o ka filament i nā waiwai kino o ka lole spunbond nonwoven i ka wā o ke kaʻina hana. Inā hiki i ka polypropylene hoʻoheheʻe ʻia me ka wikiwiki a me ka hoʻomaʻalili like ʻana ma hope o ka puka ʻana mai ka spinneret, ua lohi kona crystallization rate a ua haʻahaʻa ka crystallinity. ʻO ke ʻano o ka fiber i loaʻa he ʻano ʻano kīwī wai i hoʻopaʻa ʻole ʻia, hiki ke piʻi i kahi lakio hoʻolōʻihi nui i ka wā o ke kau ʻana. ʻOi aku ka maikaʻi o ka hoʻonohonoho ʻana o nā kaulahao mole, hiki ke hoʻonui i ka crystallinity, hoʻomaikaʻi i ka ikaika o ka fiber, a hoʻemi i kona elongation. Hōʻike ʻia kēia i nā lole spunbond nonwoven me ka ikaika haʻi kiʻekiʻe a me ka elongation haʻahaʻa; Inā maloʻo mālie, loaʻa i nā fibers ka hopena i kahi ʻano kristal monoclinic paʻa, ʻaʻole kūpono i ka hoʻopulapula fiber. Hōʻike ʻia kēia i nā lole spunbond nonwoven me ka ikaika haʻahaʻa haʻahaʻa a me ka elongation ʻoi aku. No laila, ma ke kaʻina hana, hoʻonui ʻia ka nui o ka ea hoʻoluʻu a hoʻemi i ka mahana o ke keʻena wili e hoʻomaikaʻi i ka ikaika haʻihaʻi a hoʻemi i ka elongation o nā lole spunbond nonwoven. Eia kekahi, pili pono ka mamao hoʻoluʻu o ka filament i kāna hana. I ka hana ʻana i nā lole spunbond nonwoven, koho ʻia ka mamao hoʻomaha ma waena o 50-60cm.

Kūlana kaha kiʻi

ʻO ka hoʻonohonoho ʻana o nā kaulahao molekala i nā kaula silika he mea koʻikoʻi e pili ana i ka ikaika tensile a me ka elongation i ka haki ʻana o nā filament hoʻokahi. ʻOi aku ka nui o ka hoʻonohonoho ʻana, ʻoi aku ka ikaika o ka filament hoʻokahi a ʻoi aku ka liʻiliʻi o ka elongation i ka wā haki. Hiki ke hōʻike ʻia ke degere o ka orientation e ka birefringence o ka filament, a ʻoi aku ka nui o ka waiwai, ʻoi aku ka kiʻekiʻe o ke kiʻekiʻe o ka orientation. Hoʻokumu ʻia nā fibers mua i ka wā e hoʻoheheʻe ai ka polypropylene mai loko mai o ka spinneret he haʻahaʻa haʻahaʻa a me ka hoʻonohonoho ʻana, ka haʻahaʻa fiber kiʻekiʻe, haʻihaʻi maʻalahi, a me ka elongation nui i ka wā haʻihaʻi. No ka hoʻololi ʻana i nā waiwai o nā fibers, pono lākou e kikoo i nā pae like ʻole e like me ka mea e pono ai ma mua o ka hana ʻana i kahi pūnaewele. Inhana spunbond, ʻO ka ikaika tensile o ka fiber e hilinaʻi nui i ka nui o ka nui o ka ea anuanu a me ka nui o ka ea suction. ʻOi aku ka nui o ka nui o ka ea hoʻoluʻu a me ka hoʻoheheʻe ʻana, ʻoi aku ka wikiwiki o ka wikiwiki o ka hoʻomaloʻo ʻana, a e hoʻolōʻihi ʻia nā fibers. E hoʻonui ka molecular orientation, e ʻoi aku ka maikaʻi o ka fineness, e hoʻonui ka ikaika, a e emi ka elongation i ka wā haki. Ma ka wili wili o 4000m/min, polypropylene filament hiki i kona saturation waiwai o birefringence, akā, i loko o ka ea kahe ana kaʻina hana o ka milo ana i loko o ka punaewele, ka maoli wikiwiki o ka filament mea maʻamau paʻakikī e oi aku 3000m/min. No laila, i nā kūlana i kiʻekiʻe ai nā koi ikaika, hiki ke hoʻonui wiwo ʻole ka wikiwiki. Eia nō naʻe, ma lalo o ke ʻano o ka nui o ka ea hoʻoluʻu mau, inā ʻoi aku ka nui o ka nui o ka ea suction a ʻaʻole lawa ka hoʻoluʻu ʻana o ka filament, hiki i nā fila ke haki i ka extrusion site o ka make, e hōʻino ai i ke poʻo injection a pili i ka hana a me ka maikaʻi o ka huahana. No laila, pono e hana ʻia nā hoʻololi kūpono i ka hana maoli.

ʻAʻole pili wale nā ​​ʻano kino o nā lole spunbond nonwoven i nā waiwai o nā fibers, akā pū kekahi me ke ʻano pūnaewele o nā fibers. ʻO ka ʻoi aku ka maikaʻi o ka ʻupena, ʻoi aku ka kiʻekiʻe o ke kiʻekiʻe o ka maʻi i ka hoʻonohonoho ʻana i ka ʻupena i ka wā e hoʻomoe ana i ka ʻupena, ʻoi aku ka nui o ka ʻupena, ʻoi aku ka nui o nā fibers ma kēlā me kēia ʻāpana, ʻoi aku ka liʻiliʻi o ka ratio ikaika longitudinal a transverse o ka ʻupena, a ʻoi aku ka ikaika o ka haki. No laila hiki ke hoʻomaikaʻi i ka like ʻole o nā huahana spunbond non-woven a hoʻonui i ko lākou ikaika haʻihaʻi ma o ka hoʻonui ʻana i ka nui o ka ea suction. Eia nō naʻe, inā ʻoi aku ka nui o ka lewa o ka ea suction, maʻalahi ke kumu i ka haki ʻana o ka uwea, a ʻoi aku ka ikaika o ke kau ʻana. ʻO ka hoʻonohonoho ʻana o ka polymer e hoʻopau ʻia, a ʻoi aku ka kiʻekiʻe o ka crystallinity o ka polymer, kahi e hoʻemi ai i ka ikaika o ka hopena a me ka elongation i ka wā haki, hoʻonui i ka brittleness, a pēlā e alakaʻi ai i ka emi ʻana o ka ikaika a me ka elongation o ka lole i ulana ʻole ʻia. Ma muli o kēia, hiki ke ʻike ʻia ka hoʻonui ʻana o ka ikaika a me ka elongation o nā lole spunbond nonwoven i nā manawa a pau me ka piʻi ʻana o ka nui o ka ea suction. I ka hana maoli, pono e hoʻololi i ke kaʻina hana e like me nā pono a me ke kūlana maoli i mea e loaʻa ai nā huahana kiʻekiʻe.

Wela ʻolokaʻa wela

ʻO ka pūnaewele pulupulu i hana ʻia e ka ʻōniʻoniʻo ʻana, aia i loko o kahi kūlana ʻoluʻolu a pono e ʻōwili wela a hoʻopaʻa ʻia e lilo i lole. ʻO ka hoʻopaʻa ʻana o ka ʻōwili wela kahi hana e hoʻoheheʻe ʻia a hoʻoheheʻe ʻia nā fibers i loko o ka pūnaewele e nā ʻōwili ʻōwili wela me ke kaomi a me ka mahana, a hoʻopaʻa ʻia nā kaula e hana i kahi lole. ʻO ke kī ʻo ka hoʻomalu maikaʻi i ka mahana a me ke kaomi. ʻO ka hana o ka hoʻomehana ke hoʻomāmā a hoʻoheheʻe i nā fiber. ʻO ka māhele o nā fiber i hoʻoheheʻe ʻia a hoʻoheheʻe ʻia e hoʻoholo i nā waiwai kino olole spunbond nonwoven. Ma nā wela haʻahaʻa loa, ʻo kahi hapa liʻiliʻi wale nō o nā fiber me ke kaumaha molekala haʻahaʻa e palupalu a hoʻoheheʻe ʻia, a he kakaikahi loa nā fibers i hoʻopaʻa ʻia ma lalo o ke kaomi. Hiki ke paheʻe nā pulupulu i loko o ka pūnaewele fiber, a ʻo nā lole i ulana ʻole ʻia he haʻahaʻa haʻahaʻa ikaika akā ʻoi aku ka lōʻihi. He palupalu ka huahana akā hiki ke hoʻohuhū; Ke piʻi mālie nei ka wela o ka ʻōwili ʻana, piʻi ka nui o nā mea i hoʻoheheʻe ʻia a hoʻoheheʻe ʻia, ʻoi aku ka paʻa o ka paʻa pūnaewele fiber, ʻaʻole hiki ke paheʻe nā fibers, piʻi ka ikaika haʻihaʻi o ka lole i ulana ʻole ʻia, a ʻoi aku ka nui o ka elongation. Eia kekahi, ma muli o ka pilina ikaika ma waena o nā fibers, piʻi iki ka elongation; Ke piʻi nui ka mahana, heheʻe ka hapa nui o nā fibers ma ke kiko kaomi, a lilo nā fibers i mau puʻupuʻu heheʻe, e hoʻomaka ana e lilo. I kēia manawa, hoʻomaka ka ikaika o ka lole i ulana ʻole ʻia, a emi nui hoʻi ka elongation. ʻO ka manaʻo o ka lima he paʻakikī a palupalu, a haʻahaʻa hoʻi ka ikaika o ka waimaka. Eia kekahi, ʻokoʻa nā mea kaupaona a me nā mānoanoa o nā huahana like ʻole, a ʻokoʻa hoʻi ka hoʻonohonoho wela o ka wili wela. No nā huahana lahilahi, ʻoi aku ka liʻiliʻi o nā fibers ma ka ʻōwili wela, a ʻoi aku ka liʻiliʻi o ka wela no ka palupalu a me ka hoʻoheheʻe ʻana, no laila ʻoi aku ka haʻahaʻa o ka wela o ka ʻōwili wela. ʻO ke kūpono, no nā huahana mānoanoa, ʻoi aku ka kiʻekiʻe o ke koi wela o ka ʻōwili wela.

Pumi owili wela

I ke kaʻina hana hoʻopili wela, ʻo ke kuleana o ka laina wili wili wela e hoʻopili i ka pūnaewele fiber, e hoʻokau i nā fibers i ka pūnaewele i kekahi wela deformation a hoʻokō piha i ka hopena o ka hoʻokele wela i ka wā o ka ʻōwili wela, e hoʻopaʻa paʻa ʻia nā fiber a hoʻoheheʻe ʻia, hoʻonui i ka ikaika adhesion ma waena o nā fibers, a paʻakikī i ka paheʻe ʻana o nā fibers. I ka haʻahaʻa ʻana o ke kaomi laina ʻōwili wela, ʻilihune ka nui o ka hoʻopaʻa ʻana o ka fiber ma kahi kaomi o ka pūnaewele fiber, ʻaʻole kiʻekiʻe ka ikaika o ka hoʻopaʻa ʻana o ka fiber, ʻilihune ka paʻa ʻana ma waena o nā fibers, a maʻalahi ka paheʻe ʻana o nā fibers. I kēia manawa, ʻano palupalu ka manaʻo lima o ka lole spunbond non-woven, ʻoi aku ka nui o ka elongation haʻihaʻi, a ʻoi aku ka haʻahaʻa o ka ikaika haʻihaʻi; ʻO ka mea ʻē aʻe, ke kiʻekiʻe ke kaomi laina, ʻoi aku ka paʻakikī o ka lima o ka spunbond i ulana ʻole ʻia, ʻoi aku ka ikaika o ka haki ʻana. Eia naʻe, ke kiʻekiʻe loa ke kaomi laina o ka wili wili wela, paʻakikī ke kahe a hoʻopuehu ka polymer palupalu a hoʻoheheʻe ʻia ma ka wahi ʻōwili wela o ka pūnaewele fiber, a e hōʻemi ana i ka haʻihaʻi ʻana o ka lole i ulana ʻole ʻia. Eia kekahi, pili pū ka hoʻonohonoho ʻana o ke kaomi laina i ke kaumaha a me ka mānoanoa o ka lole i ulana ʻole ʻia. I ka hana ʻana, pono e hana ʻia ke koho kūpono e like me nā pono e hana ai i nā huahana i kūpono i nā koi hana.

I ka hōʻuluʻuluʻana, nā waiwai kino a me ka mechanical opolypropylene spunbond lole ʻaʻole i ulana ʻiaʻAʻole i hoʻoholo ʻia nā huahana e ka mea hoʻokahi, akā e nā hopena i hui ʻia o nā kumu like ʻole. Ma ka hana maoli, pono e koho ʻia nā ʻāpana kaʻina kūpono e like me nā pono maoli a me nā kūlana hana i mea e hana ai i nā huahana lole spunbond kiʻekiʻe i hiki ke hoʻokō i nā pono like ʻole. Eia kekahi, ʻo ka hoʻokele maʻamau o ka laina hana, ka mālama pono ʻana i nā mea hana, a me ka hoʻomaikaʻi ʻana i ka maikaʻi a me ka mākaukau o nā mea hana, ʻo ia nā mea nui i ka hoʻomaikaʻi ʻana i ka maikaʻi o ka huahana.

Dongguan Liansheng Non ulana 'enehana Co., Ltd.ua hoʻokumu ʻia ma Mei 2020. He ʻoihana hana lole lole ʻaʻole i ulana nui ʻia e hoʻohui i ka noiʻi a me ka hoʻomohala ʻana, ka hana ʻana, a me ke kūʻai aku. Hiki iā ia ke hana i nā kala like ʻole o ka PP spunbond non-woven fabrics me ka laulā o lalo o 3.2 mika mai 9 grams a 300 grams.