Ihe nkiri mejupụtara plastik bụ ihe nkwakọba ihe a na-ejikarị eme ihe maka nkwakọ ngwaahịa na-eguzogide retort. Mweghachi na ịgba ọgwụ mgbochi okpomọkụ bụ usoro dị mkpa maka ịkwakọ ngwaahịa na-ekpo ọkụ na-ekpo ọkụ. Otú ọ dị, ihe onwunwe anụ ahụ nke ihe nkiri plastik mejupụtara na-adịkarị mfe ire ere mgbe a kpochara ya ọkụ, na-ebute ihe nkwakọ ngwaahịa na-erughị eru. Edemede a na-enyocha nsogbu ndị a na-ahụkarị mgbe esichara akpa ndị na-ekpo ọkụ na-ekpo ọkụ, wee webata ụzọ nnwale anụ ahụ ha, na-atụ anya inwe mkpa na-eduzi maka mmepụta n'ezie.
Obere akpa mweghachi na-eguzogide okpomọkụ bụ ụdị nkwakọ ngwaahịa a na-ejikarị eme anụ, ngwaahịa soy na ngwaahịa nri nri ndị ọzọ dị njikere. A na-akwakọba ya n'ozuzu agụụ ma nwee ike ịchekwa ya na ụlọ okpomọkụ mgbe a kpochara ya na igba ogwu na nnukwu okpomọkụ (100 ~ 135 ° C). Retort-eguzogide ngwugwu nri dị mfe na-ebu, dị njikere iri mgbe imeghe akpa, ịdị ọcha na adaba, na nwere ike nke ọma ịnọgide na-enwe ekpomeekpo nke nri, n'ihi ya, ọ na-mma n'anya nke ukwuu site na-eji ọkụ. Dabere na usoro ịgba ọgwụ mgbochi ọrịa na ihe nkwakọ ngwaahịa, ndụ nchekwa nke ngwaahịa nkwakọ ngwaahịa na-eguzogide retort sitere na ọkara afọ ruo afọ abụọ.
Usoro nkwakọ ngwaahịa nke nlọghachi nri bụ ime akpa, akpa, ịchafụ, mkpuchi okpomọkụ, nyocha, isi nri na ikpo ọkụ, ihicha na ịjụ oyi, na nkwakọ ngwaahịa. Isi nri na ikpo ọkụ sterilization bụ isi usoro nke usoro dum. Otú ọ dị, mgbe a na-akwakọba akpa nke ihe ndị na-emepụta ihe na-emepụta ihe polymer - plastik, usoro ihe nkedo molecular na-esiwanye ike mgbe a kpochara ya ọkụ, na ihe anụ ahụ nke ihe onwunwe na-adịkarị mfe ikpochapụ ọkụ. Edemede a na-enyocha nsogbu ndị a na-enwekarị mgbe esichara akpa retort dị elu, wee webata usoro nnwale anụ ahụ ha.
1. Nyochaa nsogbu ndị a na-ahụkarị na akpa nkwakọ ngwaahịa na-eguzogide retort
A na-achịkọta nri na-ekpo ọkụ na-ekpo ọkụ wee kpoo ọkụ na igba ogwu yana ihe nkwakọ ngwaahịa. Iji nweta ihe onwunwe dị elu na ihe mgbochi dị mma, a na-eji ihe dị iche iche na-emepụta ihe na-eguzogide retort. Ihe ndị a na-ejikarị gụnyere PA, PET, AL na CPP. Ihe owuwu a na-ejikarị eme ihe nwere okpukpu abụọ nke ihe nkiri ihe mejupụtara, yana ihe atụ ndị a (BOPA/CPP, PET/CPP), ihe nkiri mejupụtara nke nwere oyi akwa atọ (dị ka PA/AL/CPP, PET/PA/CPP) na ihe nkiri mejupụtara anọ. (dị ka PET/PA/AL/CPP). N'ime mmepụta n'ezie, nsogbu kachasị mma na-adịkarị bụ wrinkles, akpa agbajiri agbaji, ntapu ikuku na isi mgbe esichara nri:
1). Enwere n'ozuzu ụdị atọ nke wrinkling na akpa nkwakọ ngwaahịa: kehoraizin ma ọ bụ vetikal ma ọ bụ oge mgbe wrinkles na nkwakọ ndabere ihe; wrinkles na cracks na nke ọ bụla mejupụtara oyi akwa na ogbenye flatness; shrinkage nke nkwakọ ihe ndabere ihe, na shrinkage nke ihe mejupụtara oyi akwa na ndị ọzọ mejupụtara n'ígwé kewapụrụ, nke warara. A na-ekewa akpa ndị gbajiri agbaji ụzọ abụọ: ịgbawa ozugbo na mgbawa wee gbawaa.
2) .Delamination na-ezo aka n'ihe na-eme ka a na-ekewapụ ihe ndị mejupụtara nke ihe nkwakọ ngwaahịa na ibe ha. A na-egosipụta obere delamination dị ka eriri dị ka mpụta n'akụkụ nsogbu nke nkwakọ ngwaahịa ahụ, na ike peeling na-ebelata, ọ pụkwara ọbụna jiri nwayọọ dọwaa ya. N'ọnọdụ ndị siri ike, a na-ekewa oyi akwa ngwakọta nkwakọ ngwaahịa na mpaghara buru ibu mgbe esichara. Ọ bụrụ na delamination emee, synergistic ike nke anụ ahụ Njirimara n'etiti mejupụtara n'ígwé nke nkwakọ ihe ga-apụ n'anya, na anụ ahụ Njirimara na ihe mgbochi Njirimara ga-ada nke ukwuu, na-eme ka ọ gaghị ekwe omume izute shelf ndụ chọrọ, na-emekarị ka ukwuu na-efunahụ ụlọ ọrụ. .
3) .Slight ikuku ntapu n'ozuzu nwere a dịtụ ogologo incubation oge na ọ dịghị mfe ịchọpụta n'oge nri. N'oge mgbasa ozi ngwaahịa na oge nchekwa, ogo oghere nke ngwaahịa na-ebelata ma ikuku doro anya na-apụta na nkwakọ ngwaahịa. Ya mere, nsogbu àgwà a na-agụnyekarị ọnụ ọgụgụ dị ukwuu nke ngwaahịa. ngwaahịa nwere mmetụta ka ukwuu. Ihe omume nke ntapu ikuku nwere njikọ chiri anya na akara ọkụ na-adịghị ike na nkwụsi ike na-adịghị mma nke akpa retort.
4). Isi mgbe esichara nri bụkwa nsogbu àgwà a na-ahụkarị. Isi ísì pụrụ iche nke na-apụta mgbe esi nri na-emetụta oke ihe mgbaze na ihe nkwakọ ngwaahịa ma ọ bụ nhọrọ ihe na-ekwesịghị ekwesị. Ọ bụrụ na a na-eji ihe nkiri PE eme ihe dị ka mkpuchi mkpuchi ime nke akpa nri okpomọkụ dị elu karịa 120 °, ihe nkiri PE na-esi ísì na okpomọkụ dị elu. Ya mere, a na-ahọrọ RCPP dị ka oyi akwa dị n'ime nke akpa nri na-ekpo ọkụ.
2. Ụzọ nyocha maka ihe anụ ahụ nke nkwakọ ngwaahịa na-eguzogide retort
Ihe ndị na-eduga na nsogbu dị mma nke nkwakọ ngwaahịa na-eguzogide retort bụ ihe mgbagwoju anya ma na-agụnye ọtụtụ akụkụ dị ka akụrụngwa oyi akwa mejupụtara, adhesives, inks, composite na akpa njikwa nhazi, na nhazigharị usoro. Iji hụ na nkwakọ ngwaahịa dị mma na ndụ nchekwa nri, ọ dị mkpa ịme ule nguzogide nri na ihe nkwakọ ngwaahịa.
Standardkpụrụ mba ọdabara na akpa nkwakọ ngwaahịa na-eguzogide retort bụ GB/T10004-2008 “Plastic Composite Film for Packaging, Bag Dry Lamination, Extrusion Lamination” nke dabere na JIS Z 1707-1997 “General Principles of Plastic Films for Food Packaging” Haziri iji dochie GB/T 10004-1998 “Retort Ihe nkiri na akpa mejupụtara ihe na-eguzogide ọgwụ na GB/T10005-1998 "Ihe nkiri Polypropylene Biaxial Oriented / Low Density Polyethylene Composite Films and Bags". GB/T 10004-2008 na-agụnye ihe dị iche iche anụ ahụ na ihe ndị fọdụrụ na-agbaze maka ihe nkiri na akpa na-eguzogide retort, ma na-achọ ka a nwalee akpa nkwakọ ngwaahịa na-eguzogide maka mgbasa ozi okpomọkụ dị elu. Usoro a bụ iji mejupụta akpa nkwakọ ngwaahịa na-eguzogide retort na 4 % acetic acid, 1% sodium sulfide, 5% sodium chloride na mmanụ ihe oriri, mgbe ahụ iyuzucha na akara, kpoo ọkụ na nrụgide n'ime ite esi nri dị elu na 121 ° C. Nkeji 40, dị jụụ ka nrụgide na-agbanwe agbanwe. Mgbe ahụ, a na-anwale ọdịdị ya, ike nkwụsịtụ, elongation, peeling ike na ike mkpuchi okpomọkụ, a na-eji ọnụego nkwụsịtụ nyochaa ya. Usoro a bụ nke a:
R= (AB)/A×100
N'ime usoro ahụ, R bụ ọnụ ọgụgụ nkwụsị (%) nke ihe a nwalere, A bụ nkezi uru nke ihe a nwalere tupu ule nyocha nke na-eguzogide okpomọkụ dị elu; B bụ nkezi uru nke ihe ndị a nwalere mgbe ule ọkara na-eguzogide okpomọkụ dị elu. Ihe ndị a chọrọ n'ọrụ bụ: "Mgbe ule na-eguzogide okpomọkụ dị elu, ngwaahịa ndị nwere ọrụ okpomọkụ nke 80 ° C ma ọ bụ karịa ekwesịghị inwe delamination, mmebi, nrụrụ doro anya n'ime ma ọ bụ n'èzí akpa, na mbelata ike peeling, ịdọrọ- kwụsịrị ike, nsogbu aha aha na nkwụsịtụ, na ike mkpuchi okpomọkụ. Ọnụego ya kwesịrị ịbụ ≤30%.
3. Nnwale nke ihe anụ ahụ nke akpa nkwakọ ngwaahịa na-eguzogide retort
Nnwale n'ezie dị na igwe nwere ike chọpụta n'ezie arụmọrụ nke nkwakọ ngwaahịa na-eguzogide retort. Otú ọ dị, usoro a abụghị nanị na-ewe oge, kamakwa site na atụmatụ mmepụta na ọnụ ọgụgụ nke ule. Ọ naghị arụ ọrụ nke ọma, nnukwu ihe mkpofu na ọnụ ahịa dị elu. Site na nlegharị anya nyocha iji chọpụta ihe anụ ahụ dị ka ihe njiri ike, ike bee, ike mkpuchi okpomọkụ tupu na mgbe ọ gbasasịrị, enwere ike ikpebi nkwụghachi azụ nke akpa retort n'ụzọ zuru ezu. Nnwale isi nri na-ejikarị ụdị ọdịnaya abụọ na ihe emepụtara. Nnwale nri na-eji ihe dị n'ezie nwere ike ịdị nso dịka o kwere mee na ọnọdụ mmepụta n'ezie ma nwee ike igbochi nkwakọ ngwaahịa na-erughị eru ịbanye n'ahịrị mmepụta na batches. Maka ụlọ ọrụ nkwakọ ngwaahịa, a na-eji simulants iji nwalee nguzogide nke ihe nkwakọ ngwaahịa n'oge usoro mmepụta na tupu nchekwa. Nnwale arụmọrụ isi nri bara uru ma rụọ ọrụ. Onye ode akwụkwọ na-ewebata usoro nnwale anụ ahụ nke akpa nkwakọ ngwaahịa na-eguzogide retort site n'imeju ha mmiri simulation nri sitere n'aka ndị nrụpụta atọ dị iche iche ma na-eduzi ule uzuoku na esi n'otu n'otu. Usoro ule bụ nke a:
1). Nnwale nri
Akụrụngwa: nchekwa na ọgụgụ isi azụ-nrụgide dị elu ite esi nri, HST-H3 okpomọkụ akara ule
Usoro nnwale: Jiri nlezianya tinye 4% acetic acid n'ime akpa retort ruo ụzọ abụọ n'ụzọ atọ nke olu. Kpachara anya ka ị ghara imerụ akara ahụ, ka ọ ghara imetụta ngwa ngwa akara. Mgbe i mejuchara, mechie akpa nri na HST-H3, ma dozie mkpokọta 12 sample. Mgbe ị na-emechi, ikuku dị n'ime akpa kwesịrị ịgwụ ike dị ka o kwere mee iji gbochie mgbasawanye ikuku n'oge isi nri ka ọ ghara imetụta nsonaazụ ule.
Tinye ihe nlele ahụ agbachiri n'ime ite esi nri ka ịmalite ule ahụ. Tọọ okpomọkụ ka ọ bụrụ 121ºC, oge isi nri ka ọ bụrụ nkeji 40, uzuoku 6 samples, ma sie 6 samples. N'oge ule nri, ṅaa ntị nke ọma na mgbanwe nke ikuku ikuku na okpomọkụ n'ime ite esi nri iji hụ na a na-edobe okpomọkụ na nrụgide n'ime oke nhazi.
Mgbe ule ahụ mechara, dị jụụ n'ime ụlọ, wepụ ya ma hụ ma enwere akpa agbajiri agbaji, wrinkles, delamination, wdg. Mgbe ule ahụ gasịrị, elu nke 1 # na 2 # samples dị mma mgbe esichara ma ọ dịghị. delamination. N'elu ihe nlele 3 # adịchaghị mma ka esichara nri, a na-atụgharịkwa akụkụ ya na ogo dịgasị iche iche.
2). Ntụle nke njiri ike
Were akpa nkwakọ ngwaahịa tupu na mgbe nri gasịrị, bechapụ 5 akụkụ akụkụ anọ samples nke 15mm × 150mm na transverse direction na 150mm na longitudinal direction, na ọnọdụ ha maka 4 awa na gburugburu ebe obibi nke 23 ± 2℃ na 50 ± 10% RH. Ejiri igwe nyocha igwe eletrọnịkị nke XLW (PC) nwere ọgụgụ isi iji nwalee ike ịgbaji na elongation na ezumike n'okpuru ọnọdụ 200mm / min.
3). Nnwale bee
Dị ka usoro A nke GB 8808-1988 "Ụzọ Nnwale Peel maka Ngwa Plastic Ngwakọta Ngwakọta dị nro", bee ihe nlele na obosara nke 15 ± 0.1mm na ogologo 150mm. Were nlele 5 nke ọ bụla n'ụzọ kwụ ọtọ na kwụ ọtọ. Buru ụzọ bee oyi akwa ihe mejupụtara n'akụkụ ogologo ntụzịaka nke nlele ahụ, buru ya n'ime igwe nnwale eletrọnịkị XLW (PC) nwere ọgụgụ isi, wee nwalee ike peeling na 300mm / min.
4). Nnwale ike mkpuchi ọkụ
Dị ka GB / T 2358-1998 si kwuo "Ule ule maka okpomọkụ akara ike nke Plastic Film Packaging Bags", bee a 15mm wide sample na okpomọkụ akara akụkụ nke sample, meghee ya na 180 °, ma kụchie abụọ nsọtụ nke sample na. XLW (PC) nwere ọgụgụ isi Na igwe nnwale eletrọnịkị, a na-anwale ibu kachasị na ọsọ nke 300mm / min, yana A na-agbakọ ọnụego ọdịda site na iji usoro dielectric nke na-eguzogide okpomọkụ dị na GB/T 10004-2008.
Nchịkọta
Nri ngwugwu na-eguzogide retort bụ ndị na-azụ ahịa na-enwewanye mmasị n'ihi ịdị mma ha na iri na nchekwa. Iji nọgide na-enwe ịdịmma nke ọdịnaya nke ọma ma gbochie nri ịka njọ, usoro ọ bụla nke usoro mmepụta akpa na-eweghachi okpomọkụ kwesịrị ka enyocha nke ọma ma chịkwaa nke ọma.
1. Ekwesịrị iji akpa nri na-eguzogide okpomọkụ dị elu nke ihe kwesịrị ekwesị dabere na ọdịnaya na mmepụta usoro. Dịka ọmụmaatụ, a na-ahọrọ CPP dị ka akwa mkpuchi ime nke akpa nri na-eguzogide okpomọkụ; mgbe a na-eji akpa nkwakọba ihe nwere akwa AL na ngwugwu acid na ihe dị n'ime alkaline, a ga-agbakwunye ihe mkpuchi nke PA n'etiti AL na CPP iji mee ka iguzogide acid na alkali permeability; oyi akwa ọ bụla mejupụtara The okpomọkụ shrinkability kwesịrị ịdị na-agbanwe agbanwe ma ọ bụ yiri iji zere warping ma ọ bụ ọbụna delamination nke ihe onwunwe mgbe esi nri n'ihi na-adịghị mma kenha nke okpomọkụ shrinkage Njirimara.
2. Jiri ezi uche na-achịkwa usoro ihe mejupụtara. Akpa retort na-eguzogide okpomọkụ na-ejikarị usoro ngwakọta akọrọ. N'ime usoro mmepụta ihe nkiri retort, ọ dị mkpa ịhọrọ usoro nrapado kwesịrị ekwesị na nke ọma gluing, ma jiri nlezianya na-achịkwa ọnọdụ ọgwụgwọ iji jide n'aka na onye isi nke nrapado na onye na-agwọ ọrịa na-emeghachi omume n'ụzọ zuru ezu.
3. Nguzogide okpomọkụ dị elu bụ usoro kachasị njọ na usoro nkwakọ ngwaahịa nke nnukwu okpomọkụ retort akpa. Iji belata ihe omume nke nsogbu dị mma nke batch, akpa retort dị elu ga-enyocha ma nyochaa dabere na ọnọdụ mmepụta n'ezie tupu ejiri ya na n'oge mmepụta. Lelee ma ọdịdị nke ngwugwu ahụ mgbe isiri nri ọ dị larịị, gbajiri agbaji, gbajiri agbaji, nrụrụ, ma enwere delamination ma ọ bụ ntapu, ma ọnụego mbelata nke akụrụngwa anụ ahụ (njiri ike, ike peel, ike mkpuchi okpomọkụ) na-emezu ihe achọrọ, wdg.
Oge nzipu: Jan-18-2024
