Nhungamidzo: Sezvo imwe yeiyo yakashandiswa zvakanyanya mapurasitiki, PP inogona kuonekwa kwese muhupenyu hwezuva nezuva. Iyo ine yakanyanya kuchena pane yakajairwa PC. Kunyangwe iyo isina iyo yakakwira mavara ekusa, pp ine yakanyanya kuchena uye kushandurwa kwemavara. Mune indasitiri, PP zvinhu zvinowanzoshandiswa pakutakura zvinhu sengemabhodhoro epurasitiki, bhodhoro caps, kirimu mabhodhoro, Etc. Ini ndakagadziriswa neRb packageuye kugoverwa necheni yekupa yekutumira.
CHEMICAL ZITA: Polypropylene
Chirungu Zita: Polypropylene (anotaurwa sePP)
PP ndiyo crystalline polymer. Pakati peiyo inowanzoshandiswa mapurasitiki, PP ndiyo yakavhenekerwa, ine density ye101G / cm3 (isingasviki mvura). Pakati peiyo general-general plastiki, PP ine yakanakisa kupisa kupesana. Kupisa kwayo kupisa kwekushisa ndeye 80-100 ° C uye inogona kubikwa mumvura inovira. PP ine kushushikana kwakanaka kupaza kuramba uye kukwira kwakanyanya hupenyu hunonetesa hupenyu. Zvinowanzozivikanwa se "100% mapurasitiki". Kuita kwakazara kwePP kuri nani pane iyo yePE zvinhu. Zvigadzirwa zvePP vane uremu hwakajeka, kunaka kwakanaka uye kunaka kwemakemikari.
Zvakaipa zvePP: Kuderera kwakakwana, kuparadzwa kwemamiriro ekunze, zviri nyore kuburitsa "kuparadzaniswa kwemhosva".
01
Kuumbwa hunhu
1) Iyo Crystalline Chinyorwa chine Hygroscopiciticiticiticiticiticiticiticiticiticiticiticiticiticiticiticiticiticoticity yakaderera uye iri kunyungudika kupwanyika, uye zviri nyore kutora musangano kwenguva refu uine simbi inopisa.
2.
3. Tembiricha yemidziyo iri nyore kutungamirwa pakudziya kwakadzika uye nekumanikidzwa kwakanyanya. Kana iyo tembiricha yakadzika yakadzika kupfuura makumi mashanu emadhigirii, chikamu chepurasitiki hachina kutsvedza, uye zviri nyore kuburitsa madhiza asina kunaka, mafambiro ekuyerera, anodzora kurwisa uye deformation pamusoro pemadhigirii 90
4) Iyo yepurasitiki madziro gasiketi inofanira kunge iri yunifomu yekudzivirira kushomeka kweglue neakapinza makona kuti udzivise kushushikana kushushikana.
02
Process maitiro
PP ine yakanaka yakanaka pakunyungudika tembiricha uye yakanaka kuumbwa kuita. Pp ine maitiro maviri mukugadzirisa
Imwe: iyo viscosity yePP LELT inoderedza zvakanyanya nekuwedzera kwehasha (kushoma kwakakanganiswa nekushisa)
Chechipiri: Iyo degree remanyorerwo emanyorerwo akakwirira uye iyo shrinkage chiyero chakakwirira.
Tembiricha yekudziya yePP iri kutenderera 200-300 ℃. Iyo ine yakanaka yekukugadzikana (tembaphiti yechidhori ndeye 310 ℃), asi pakupisa kukuru (270-300 ℃), inogona kusvibisa kana ichiramba iri mugari kwenguva yakareba. Nekuti iyo viscosity yePP inoderedza zvakanyanya nekuwedzera kwekumhanya kwemhepo, kuwedzera kuremerwa nekumhanya kwejekiseni kuchawedzera kusvibiswa kwayo uye nekuvandudza shrinkage deformation uye kushungurudzika. Iyo inopisa tembiricha inofanirwa kudzorwa mukati mehuwandu hwe30-50 ℃. PP Melt inogona kupfuura kuburikidza neyakagwinya yakamanikana mold gap uye usaonekera kumberi. Muchimiro chekunyungudika chePP, chinofanira kutora huwandu hukuru hwekupisa kweFusion (yakakura chaizvo kupisa), uye chigadzirwa chinopisa mushure mekubviswa kubva kuumbwa. Zvinyorwa zvePP hazvidi kuomeswa panguva yekugadzirisa, uye kuderera kweiyo uye kuchema kwePP kwakaderera pane iro rePE.
03
Mapoinzi ekucherekedza mukugadzirisa kwepurasitiki
Purasitiki yekugadzirisa
Yakachena PP iri translucent nyanga yenyanga chena uye inogona kuvezwa mumavara akasiyana siyana. PP inogona kungochinjirwa nemavara emavara pane general jection inoumba michina, asi mamwe marudzi akazvimiririra zvinhu zvinosimbisa mukana wekusanganisa, uye ivo vanogona zvakare kuve nedare naToner.
Zvigadzirwa zvinoshandiswa kunze kwekunze zvinowanzo zadzwa neUV stabilizers uye kabhoni dema. Iko kushandiswa kwehurongwa hwezvekugadziriswazve hakufanirwe kupfuura gumi neshanu muzana, zvimwe zvichaita kuti simba rekudonha uye kuora uye kuderedzwa uye discoloration. Kazhinji, hapana kurapa kwakakosha kurapwa kunodiwa usati wambiro pombi yekugadzirisa.
Jekiseni rinoumba kusarudzwa kwemuchina
Iko hakuna zvakakosha zvinodiwa pakusarudzwa kweiyo jekiseni inoumba michina. Nekuti PP ine yakakwirira crystallinity. Iyo komputa jekiseni kuumbwa muchina ine yakakwirira jekiseni yekumanikidza uye yakawanda-nhanho kutonga inodiwa. Simba rekunamatira rinowanzotsanangurwa na 3800t / m2, uye iyo jekiseni vhoriyamu ndeye 20% -85%.
Mold uye Gedhi Dhizaini
Iyo tembiricha inopisa ndeye 50-90 ℃, uye iyo yakakwira molity tembiricha inoshandiswa kune yakakwirira saizi zvinodiwa. Iyo core tembiricha inodarika mashanu ℃ yakaderera pane iyo tembiricha yekudziya, iyo runner tembiricha iri 4-7mm, iyo suo reSuodhi risati rasvika 1-1 ..
Kureba kwegedhi regedhi kwapera,
Iyo mold inofanira kunge iri yakanaka yekubuda. Iyo vent gomba iri 0.025mm-0.038mm yakadzika uye 1.5mm gobvu. Kuti udzivise shringege mavara, shandisa mavara akakura uye akatenderedza uye kutenderera kwemabvu kuve mudiki (semuenzaniso, 50-60% yemadziro emadziro).
Iko ukobvu kwezvigadzirwa zvakagadzirwa neHomopolymer PP hakufanirwe kupfuura 3mm, kana zvikasadaro pachave nemabhuruku (madziro ezvipfuyo zvigadzirwa zvinogona kushandisa Copolymer pp).
Kupisa tembiricha
Iyo yekunyunguduka yePP ndeye 160-175 ° C, uye tembiriti yechidhori ndeye 350 ° C, asi iyo tembiricha yekuisa haigoni kupfuura 275 ° C panguva yekugadzirisa jekiseni. Tembiricha muchikamu chekunyungudika ndechechidimbu che 240 ° c.
Inomhanyisa jekiseni
Kuti uderedze kushushikana kwemukati uye kuremara kwemukati, kuremerwa kwepamusoro. Kana iyo nzvimbo yakatarwa ichionekwa nemitsetse uye yakasviba mitsetse yakasarudzika negedhi, kuyamwa-kumhanya jekiseni uye yakakwira molity tembiricha inofanira kushandiswa.
Nyungudika kudzoka
5Barthy anonyungudika kumanikidzwa kudzvinyiriro kunogona kushandiswa, uye kudzvinyirira kwekuseri kweiyo tauro yezvinyorwa kunogona kugadziridzwa nenzira kwayo.
Jekiseni uye kumanikidzwa kubata
Shandisa yakakwirira jekiseni yekumanikidza (1500-1800bar) uye kubata kumanikidza (inenge 80% yeiyo jekiseni jekiseni). Chinja kuti ubate kumanikidza panenge 95% yeiyo yakazara dura, uye shandisa nguva yekubatisisa.
Kutumira-kugadzirisa zvigadzirwa
Kuti udzivirire kuderera uye deformation inokonzerwa neyeposta-crystallization, zvigadzirwa zvinowanzoda kuti zviiswe mumvura inopisa.
Shanghai Rainbow Industrial Co, Ltdndiye mugadziri,Shanghai Rainbow PackageIpa imwe-yekumisa cosmetic package.Kana iwe unofarira zvigadzirwa zvedu, unogonataura nesu,
Webhusaiti:www.kuriom-muagi.com
Email:Bobby@rainbow-pkg.com
Whatsapp: +0086138818823743
Kutumira Nguva: Oct-04-2021