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 iko dị ka nkwakọ nri iji kewapụ ntinye 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 nke ndụ, wdg), ihe ndị na-emepụta ihe (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. Ịgbochi 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 nke mpụga. 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 ịhazi 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-agbasawanye ma 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. Ọdịdị nke ọtụtụ ihe mejupụtara nwere ike inye egwuregwu zuru oke na njirimara nke ihe ọ bụla, meziwanye nguzogide 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 na-ejuputa 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 ihe mgbochi ihe mgbagwoju anya dị mma 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, ihe ndị a chọrọ maka tensile Njirimara nke EVOH n'oge nke abụọ ịkpụzi, na EVOH oyi akwa nkesa n'oge calendeing na-emepụta ihe mejupụtara Ibé akwụkwọ The uniformity nke mejupụtara ihe niile bụ isi okwu nke na-emetụta arụmọrụ na-arụ ọrụ na-arụ ọrụ na-arụ ọrụ na-arụ ọrụ na-arụ ọrụ na ihe niile dị mkpa iji dozie nsogbu na-arụ ọrụ. na-emepụta ụdị ihe mgbagwoju anya 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 ihe ndabere, nke abụọ bụ ihe kwekọrọ na viscosity gbazee nke PP na EVOH, na nke atọ bụ ihe a chọrọ nke ihe ndị na-emepụta ihe, iji zere delamination n'oge nhazi nke abụọ. 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, and 9-layer high-barrier feat nkwakọ ihe, tumadi na-eji aseptic nkwakọ, jelii ọṅụṅụ, mmiri ara ehi ngwaahịa, chilled azụ na anụ ngwaahịa nkwakọ wdg N'ime ya na-abụghị nri mkpọ a na-eme ihe na-enweghị nri na-edozi, volati. na ndị ọzọ ubi, na magburu onwe ihe mgbochi Njirimara, nke ukwuu mma shelf ndụ nke ngwaahịa.
