1. Zachilengedwefilimu BOPP
Kanema wa BOPP ndi njira yomwe mafilimu aamorphous kapena a crystalline amatambasulidwa molunjika komanso mopingasa pamwamba pa malo ochepetsera panthawi yokonza, zomwe zimapangitsa kuwonjezeka kwa malo, kuchepa kwa makulidwe, ndi kusintha kwakukulu kwa glossiness ndi kuwonekera.Panthawi imodzimodziyo, chifukwa cha kuyang'ana kwa mamolekyu otambasula, mphamvu zawo zamakina, kutsekemera kwa mpweya, kukana chinyezi, ndi kuzizira kwazizira zakhala zikuyenda bwino.
Makhalidwe a filimu ya BOPP:
Kuthamanga kwambiri kwamphamvu komanso zotanuka modulus, koma kutsika kwamphamvu;Kukhazikika kwabwino, kutalika kwapadera komanso kukana kutopa;Kutentha kwakukulu ndi kuzizira kozizira, ndi kutentha kwa ntchito mpaka 120℃.BOPP imakhalanso ndi kuzizira kwambiri kuposa mafilimu wamba a PP;Kuwala kwapamwamba kwambiri komanso kuwonekera bwino, koyenera kugwiritsidwa ntchito ngati zida zosiyanasiyana zomangira;BOPP ili ndi kukhazikika kwamankhwala abwino.Kupatula amphamvu zidulo, monga Oleum ndi nitric asidi, ndi insoluble mu zosungunulira ena, ndi ena ma hydrocarbons ndi kutupa zotsatira pa izo;Imakhala ndi madzi abwino kwambiri ndipo ndi imodzi mwazinthu zabwino kwambiri zotetezera chinyezi ndi chinyezi, zomwe zimayamwa madzi osakwana 0.01%;Chifukwa printability osauka, padziko korona mankhwala ayenera kuchitidwa pamaso kusindikiza kukwaniritsa zotsatira zabwino yosindikiza;Magetsi apamwamba kwambiri, Antistatic wothandizira adzawonjezedwa ku utomoni womwe umagwiritsidwa ntchito popanga filimu.
2. Mtengo BOPP
Mapangidwe apamwamba a matte BOPP ndi wosanjikiza wa matte, kupangitsa kuti mawonekedwe azimveka ngati pepala komanso omasuka kukhudza.Kuzimiririka sikumagwiritsidwa ntchito posindikiza kutentha.Chifukwa cha kukhalapo kwa kusanjikiza kwa chiwonongeko, poyerekeza ndi BOPP yambiri, ili ndi zizindikiro zotsatirazi: kutayika kwapamwamba kumatha kukhala ndi gawo la mthunzi, ndipo kung'ambika kwapamwamba kumachepetsedwa kwambiri;Ngati ndi kotheka, wosanjikiza kutha angagwiritsidwe ntchito ngati chivundikiro otentha;Kuzimiririka pamwamba kumakhala ndi kusalala bwino, chifukwa kukwera pamwamba kumakhala ndi anti adhesion ndi mpukutu wa filimuyo sikophweka kumamatira;Kulimba kwamphamvu kwa filimu yozimiririka ndikotsika pang'ono kuposa filimu wamba, komanso kukhazikika kwamafuta kumakhala koyipa pang'ono kuposa kwa BOPP wamba.
Kanema wa Pearlescent amapangidwa kuchokera ku PP ngati zopangira, zowonjezeredwa ndi CaCO3, pigment ya pearlescent, ndi mphira wosinthidwa, wosakanikirana komanso wotambasulidwa biaxially.Chifukwa cha kutambasula kwa mamolekyu a utomoni wa PP panthawi ya kutambasula kwa biaxial, mtunda wapakati pa CaCO3 particles umakulitsidwa, zomwe zimapangitsa kuti pakhale ming'oma ya porous.Choncho, ngale filimu ndi microporous thovu filimu ndi osalimba 0.7g/cm ³ Kumanzere ndi kumanja.
Mamolekyu a PP amataya katundu wawo wosindikiza kutentha pambuyo pa biaxial orientation, koma monga zosintha monga mphira, amakhalabe ndi zinthu zina zosindikizira kutentha.Komabe, mphamvu yosindikizira kutentha ndi yotsika komanso yosavuta kung'ambika, kuwapangitsa kuti azigwiritsidwa ntchito kwambiri popaka ayisikilimu, popsicles, ndi zinthu zina.
4. Kutentha kosindikizidwa filimu ya BOPP
Filimu yosindikizira kutentha kwa mbali ziwiri:
Filimu yopyapyalayi ili ndi mawonekedwe a ABC, pomwe mbali zonse za A ndi C zimasindikizidwa kutentha.Amagwiritsidwa ntchito makamaka ngati zida zonyamula chakudya, nsalu, zomvera ndi makanema, ndi zina.
Kanema wosindikiza kutentha kwa mbali imodzi:
Filimu yopyapyalayi ili ndi mawonekedwe a ABB, ndi A-layer kukhala wosanjikiza wosindikiza kutentha.Pambuyo pa kusindikiza chitsanzo pa B-mbali, amaphatikizidwa ndi PE, BOPP, ndi zojambulazo za aluminiyamu kuti apange thumba, lomwe limagwiritsidwa ntchito ngati zipangizo zamakono zopangira chakudya, zakumwa, tiyi, ndi zina.
5. Ikani filimu ya CPP
Kanema wa Cast CPP polypropylene ndi filimu yosatambasula, yosalunjika ya polypropylene.
Makhalidwe a filimu ya CPP ndi yowonekera kwambiri, kutsika bwino, kukana kwabwino kwa kutentha kwapamwamba, kukhazikika kwapadera popanda kutaya kusinthasintha, ndi kusindikiza bwino kutentha.Homopolymer CPP ili ndi mawonekedwe ocheperako kutentha osindikizira kutentha komanso kuphulika kwakukulu, ndikupangitsa kuti ikhale yoyenera kugwiritsidwa ntchito ngati filimu yolongedza yosanjikiza imodzi,
Kuchita kwa copolymerized CPP ndi koyenera komanso koyenera ngati chinthu chamkati chamagulu ophatikizika.Pakadali pano, nthawi zambiri ndi CPP extruded, yomwe imatha kugwiritsa ntchito mawonekedwe amitundu yosiyanasiyana ya polypropylene kuphatikiza, kupangitsa kuti CPP ikhale yokwanira.
6. Kuwomba kuumba IPP filimu
Kanema wowombedwa ndi IPP nthawi zambiri amapangidwa pogwiritsa ntchito njira yowombera pansi.PP ikatulutsidwa ndikukulitsidwa pakamwa pa nkhungu ya annular, imakhazikika poyambira ndi mphete ya mpweya ndipo nthawi yomweyo imazimitsidwa ndikuwumbidwa ndi madzi.Atatha kuyanika, amakulungidwa ndikupangidwa ngati filimu ya cylindrical, yomwe imathanso kudulidwa kukhala mafilimu oonda.IPP yopangidwa ndi Blow imakhala yowonekera bwino, yokhazikika, komanso kupanga thumba losavuta, koma makulidwe ake ofanana ndi osauka ndipo filimuyo imakhala yosakwanira.
Nthawi yotumiza: Jun-24-2023
