PP/PE/PA/PETG/EVOH Multilayer Barrier Sheet Co-extrusion Line
Isi Nka na ụzụ Parameter
| Ụdị ahịrị | Ihe nlereanya extruder | Obosara ngwaahịa | Ọkpụrụkpụ ngwaahịa | Mmepụta extrusion chepụta |
| 7 n'ígwé ngalaba-extrusion | 120/75/50/60/75 | 800-1200mm | 0.2-0.5mm | 500-600kg / h |
| 9 n'ígwé ngalaba-extrusion | 75/100/60/65/50/75/75 | 800-1200mm | 0.05-0.5mm | 700-800kg / h |
Mara: Nkọwapụta ndị a nwere ike ịgbanwe na-enweghị ọkwa mbụ.
Ọkwa ahịa nke ngwa nkwakọ ngwaahịa EVOH
N'ihe gbasara nkwakọ nri yinye oyi, ndị mmadụ na-eji igwe ma ọ bụ ugegbe dị ka nkwakọ nri iji kewapụ nbanye nke gas dị iche iche n'ime na n'èzí iji hụ na ọdịnaya dị na uru bara uru.N'ihi na e nwere isi ihe atọ na-akpata mmebi nri: ihe ndị dị ndụ (mmeghachi omume enzyme ndu, wdg), ihe ndị na-emepụta ọgwụ (karịsịa oxidation nke ihe oriri) na ihe anụ ahụ (hygroscopic, ihicha, wdg).Ihe ndị a na-ekere òkè na ọnọdụ gburugburu ebe obibi dị ka ikuku oxygen, ìhè, okpomọkụ, mmiri mmiri, wdg, nke na-eme ka ihe oriri na-emebi emebi.Igbochi mmebi nke nri bụ isi igbochi mgbasa nke microorganisms na nri, gbochie ikuku oxygen nke ihe oriri na-edozi ahụ, na igbochi mmiri mmiri na ịnọgide na-enwe ụtọ mbụ nke nri.
Ethylene-vinyl mmanya copolymer, nke a na-akpọ EVOH, bụ nke a maara dị ka resins mgbochi atọ kasị ukwuu n'ụwa yana polyvinylidene chloride (PVDC) na polyamide (PA) [2].EVOH nwere ike igbochi ntinye nke oxygen na ikuku n'ime nri, si otú ahụ na-egbochi mmepụta nke nsị na ihe ndị ọzọ na-emerụ ahụ n'ihi mmụba nke microorganisms, ma nwee ike igbochi mgbanwe nhazi nke oxidation kpatara, na-ejigide ísì na igbochi mmetọ isi.Ọzọkwa, enweghị ihe mgbochi mmiri nwere ike ịkwụ ụgwọ site na akwa polyolefin ndị ọzọ.Ya mere, ihe nkwakọ ngwaahịa multilayer EVOH nwere ike igbochi mmebi nri nke ọma ma gbatịkwuo ndụ.Tụkwasị na nke ahụ, ọ dị mfe nhazi na ịmepụta, ma nwee ezigbo ọrụ nchebe gburugburu ebe obibi.N'ihi ezigbo ihe mgbochi gas, nghọta, nhazi na nguzogide ihe mgbaze nke EVOH resin, mpaghara ngwa ya na-abawanye ụba, na ọchịchọ na-etokwa ngwa ngwa.
Ihe mgbochi dị elu EVOH resin
1. Ihe onwunwe
The mgbochi Njirimara nke EVOH The mgbochi Njirimara nke polymer ihe na-ezo aka na shielding ikike nke ngwaahịa na obere molekul gas, liquids, mmiri vapor, wdg Ugbu a na-ejikarị resin iche na ezi ihe mgbochi Njirimara gụnyere: EVOH, PVDC, PAN, PEN, PA. na PET.
2. Mgbe a na-eji EVOH eme ihe dị ka ihe mgbochi dị elu, ọ na-ejikarị usoro ihe mejupụtara multi-layer.Ihe ngwakọta nke a na-ejikarị eme ihe bụ: PP, HIPS, PE, EVOH, AD, na AD bụ nrapado na nhazi ahụ.Nhazi ihe mejupụtara nke multi-layer nwere ike inye egwuregwu zuru oke na njirimara nke ihe ọ bụla, mee ka mmiri na-eguzogide mmiri nke EVOH, ma nweta ihe mgbochi dị elu nke nwere njirimara zuru oke.A na-eji ọtụtụ n'ime ha na nkwakọ ngwaahịa na-agbanwe agbanwe n'oge gara aga, mana resins mejupụtara dị ka PP, PE na PA adịghị mfe ịkụ ọkpọ n'ihi ịdị mma ha siri ike na adịghị mma, nke na-egbochi ngwa ha n'ọhịa nke nkwakọ ngwaahịa siri ike, karịsịa na. ngwaahịa ndochi n'ịntanetị.HIPS polystyrene na-eguzogide mmetụta nwere ezigbo nkwụsi ike na ezigbo ịkpụzi ihe, dabara adaba maka ịkụ ọkpọ na dabara adaba maka ihe nkwakọ ngwaahịa siri ike.Ya mere, ọ dị ngwa ngwa karịsịa ịmepụta EVOH siri ike ihe mejupụtara ihe mgbochi dị elu nke dabara maka nkwakọ ngwaahịa siri ike.
N'ihi adịghị mma ndakọrịta n'etiti EVOH resin na HIPS resin, na nnukwu ihe dị iche na resin rheology ọnụego, na bonding ike n'etiti mkpụrụ na EVOH, chọrọ maka tensile Njirimara nke EVOH n'oge secondary ịkpụzi, na EVOH oyi akwa nkesa n'oge calendering ka na-emepụta mpempe akwụkwọ ndị na-emepụta ihe na-ejikọta ọnụ nke ihe ndị na-emepụta ihe bụ isi ihe niile na-emetụta arụmọrụ na iji ihe ndị mejupụtara, ma bụrụkwa nsogbu siri ike nke dị mkpa ka edozi ya mgbe ị na-emepụta ụdị ihe a.
Isi ihe na teknụzụ co-extrusion multi-layer bụ nrapado (AD).Ngwakọta ngwugwu nke EVOH na-agụnyekarị PPEVOH, mana PP na EVOH enweghị ike ijikọta ya ozugbo, na nrapado (AD) ga-agbakwunye n'etiti PP na EVOH.Mgbe ị na-ahọrọ nrapado, ọ dị mkpa iji tụlee nrapado nke PP dị ka isi ihe, nke abụọ bụ dakọtara nke gbazee viscosity nke PP na EVOH, na nke atọ bụ ihe a chọrọ nke tensile Njirimara, iji zere delamination n'oge nke abụọ. nhazi.Ya mere, mpempe akwụkwọ ndị a na-ejikọta ọnụ na-abụkarị akwụkwọ mpempe akwụkwọ ise (PPADEVOHADPP)./ AD / EVOH / AD / R / PP, oyi akwa kachasị elu bụ ihe ọhụrụ PP, nke abụọ nke ọzọ bụ PP ihe eji emegharị ihe R (PP).A pụkwara iji usoro asymmetric mee ihe, na ihe ndị ọzọ (PE / HIPS, wdg) nwere ike ịgbakwunye extruders maka co-extrusion.Ụkpụrụ ahụ bụ otu ihe ahụ, a pụkwara imezu otu usoro ntinye ọnụ nke multi-layer.
Ngwa
Ihe EVOH nwere ezigbo ihe mgbochi.Site na teknụzụ co-extrusion na PP, PE, PA, PETG na ihe ndị ọzọ, enwere ike ịhazi ya n'ime 5-layer, 7-layer, na 9-layer high-blockers packaging dị arọ, nke a na-ejikarị na nkwakọ ngwaahịa aseptic, ihe ọṅụṅụ jelii, mmiri ara ehi ngwaahịa, chilled azụ na anụ ngwaahịa nkwakọ wdg Na-abụghị nri akụkụ, ọ na-eji na-emepụta ọgwụ, obodo ihe mgbaze nkwakọ na ndị ọzọ ubi, na magburu onwe ihe mgbochi Njirimara, nke ukwuu mma shelf ndụ nke ngwaahịa.
