Nau'in fim na CPP, aikace-aikace da tsarin samarwa

Nau'ikan fim na CPP

Fim ɗin CPP shine fim ɗin da aka fim ɗin polypropylene (PP) wanda aka samar ta hanyar 'yan wasa extrusion tsari.

Wannan nau'in fim ɗin ya bambanta da fim ɗin BOPP (mai siffar polypropylene mai kusurwa biyu). Fim ne wanda ba ya da alaƙa da juna. Yana da halaye na bayyananniyar haske, sheƙi mai yawa, tauri mai kyau, juriyar danshi mai kyau, juriyar zafi mai kyau, da kuma sauƙin rufe zafi. Bayan bugawa, lamination, yin jaka, ana amfani da shi sosai a cikin marufi na abinci, magani, takarda ta gida, tufafi, abubuwan yau da kullun, masana'antu, da sauransu.

Fim ɗin CPP yana da halaye na kyakkyawan bayyanawa, mai sheƙi mai yawa, mai ƙarfi, juriyar danshi mai kyau, juriyar zafi mai kyau, da sauƙin rufe zafi. Dangane da amfani daban-daban, ana iya raba shi zuwa fim ɗin CPP gabaɗaya, fim ɗin CPP mai aluminum da CPP mai matakin girki. Fim, da sauransu. Bayan bugawa da yin jaka, ana amfani da fina-finan CPP sosai a cikin jakunkunan tufafi, kayan saƙa da na fure, fina-finan takardu da kundin hoto, marufin abinci da fina-finan ƙarfe waɗanda suka dace da marufin shinge da ado.

Bugu da ƙari, buƙatar marufi na abinci, marufi na alewa (fim ɗin jujjuyawa), marufi na magunguna (jakunkunan jiko), tef ɗin manne kai, masu riƙe katin kasuwanci, fayilolin zobe, da sauransu yana ƙaruwa.

CPP yana da kyakkyawan juriya ga zafi. Saboda yanayin laushi na PP yana da kusan 140°C, ana iya amfani da wannan nau'in fim ɗin a cikin cika mai zafi, jakunkunan retort, marufi na aseptic da sauran filayen. Tare da kyakkyawan juriyarsa ga acid, alkali da mai, ya zama kayan farko da aka zaɓa don marufi na kayan burodi ko kayan laminate. Yana da aminci idan aka taɓa abinci, yana da kyakkyawan aikin nunawa, kuma ba zai shafi ɗanɗanon abincin da ke ciki ba. Ana iya zaɓar nau'ikan resin daban-daban don samun kaddarorin da ake buƙata.

Tsarin samar da fina-finai na CPP

Fim ɗin CPP fim ne da ba a shimfiɗa shi ba wanda aka yi ta hanyar yin siminti. Yanzu, a China, fim ɗin CPP ya sami babban ci gaba bayan shekaru da yawa na tarinsa. Idan aka kwatanta da ƙasashen da suka ci gaba, fim ɗin CPP na cikin gida ya kai matakin ci gaba a duniya dangane da fasahar samarwa da kayan aikin samarwa.

Tsarin shirya fina-finan 'yan wasan kwaikwayo gabaɗaya yana amfani da hanyar T-die. Halayen wannan hanyar sune:

(1) Hanyar jefa tef ɗin tana kawar da matakin busar da fim ɗin hanyar fim ɗin bututu, tana da sauƙin aiki, kuma tana da ƙarancin ɓata;
(2) Idan aka samar da shi ta hanyar amfani da hanyar jefa tef, ana shirya ƙwayoyin sinadarai cikin tsari, don haka yana da amfani a inganta bayyananniyar, sheƙi da daidaiton kauri na fim ɗin, kuma ya dace da marufi mai inganci;
(3) Sashen simintin ya ɗauki tsarin juyawa na lantarki sama da ƙasa da kuma motsi na gaba da baya, wanda yake da sauƙin aiki;
(4) Sashen corona yana ɗaukar sanyaya iska da sanyaya ruwa, don haka samfurin ba shi da sauƙin lalacewa;

Muhimman abubuwan da 'yan wasan kwaikwayo na CPP suka yi a tsarin samar da fina-finai

Kan injin nau'in T yana ɗaya daga cikin manyan kayan aikin samarwa. Tsarin kan injin ya kamata ya sa kayan ya fita daidai gwargwado tare da faɗin leben injin. Bai kamata a sami wasu tabo a cikin hanyar kwararar ciki ta kan injin ba, kuma ƙirar kayan ya kamata ta kasance da yanayin zafi iri ɗaya. Ya kamata a yi la'akari da yanayin kayan. Abubuwa da yawa sun haɗa da ɗabi'a. Don amfani da kan injin injin daidai, ana amfani da kan injin mai rataye mai tapering manifold. Ya kamata a sarrafa saman abin naɗin sanyaya da kyau, karko na saman bai kamata ya wuce 0.15mm ba, saurin juyawa ya kamata ya kasance mai karko, kuma aikin daidaiton motsi ya kamata ya zama mai kyau don guje wa canjin kauri na tsayi. Yi amfani da ma'aunin kauri na beta ray ko infrared don sa ido kan kauri na fim don cimma juriya mai gamsarwa. Don samar da fina-finan simintin da suka cancanta, ba wai kawai ya zama dole a daidaita tsarin akan kayan ba, har ma don sanin yanayin sarrafawa.

Babban tasiri ga aikin fim shine zafin jiki. Yayin da zafin resin ke ƙaruwa, ƙarfin juriya na tsawon lokaci (MD) na fim ɗin yana ƙaruwa, bayyananniya yana ƙaruwa, kuma hazo yana raguwa a hankali, amma ƙarfin juriya na transverse (TD) na fim ɗin yana raguwa. Mafi dacewa zafin shine 230~250℃. Wukar iska akan abin naɗa mai sanyaya yana samar da siririn iska a saman fim ɗin da abin naɗa mai sanyaya, wanda ke sanyaya fim ɗin daidai kuma yana kula da samar da sauri. Dole ne daidaitawar wukar iska ta dace. Yawan iska ko kusurwa mara kyau na iya sa kauri na fim ɗin ya zama mara ƙarfi ko kuma bai manne da abin naɗa ba, wanda ke haifar da wrinkles ko alamu waɗanda ke shafar ingancin bayyanar. Yayin da zafin naɗa mai naɗa mai sanyaya ke ƙaruwa, taurin fim ɗin yana ƙaruwa kuma hazo yana ƙaruwa.

Idan ƙarin abubuwa a cikin kayan da aka ƙara a saman abin naɗawa, dole ne a kashe injin a tsaftace shi don guje wa shafar ingancin bayyanar fim ɗin. Fim ɗin da aka yi da siminti yana da laushi, kuma dole ne a daidaita matsin lamba da tashin hankali bisa ga abubuwan da suka shafi kauri da saurin samarwa yayin naɗawa. In ba haka ba, raƙuman ruwa za su faru kuma su shafi lanƙwasa. Ya kamata a ƙayyade zaɓin tashin hankali bisa ga ƙarfin tayar da samfurin. Gabaɗaya, girman tashin hankali mai lanƙwasawa, ƙarancin yuwuwar jujjuyawar za ta huta da juyawa. Duk da haka, raƙuman ruwa za su bayyana cikin sauƙi a farkon naɗawa, wanda zai shafi santsi na naɗawa. Akasin haka, idan tashin hankali mai lanƙwasawa ƙarami ne, tasirin farko yana da kyau, amma da zarar ka yi birgima, da sauƙin shakatawa da karkacewa na fim ɗin. Saboda haka, tashin hankalin ya kamata ya kasance matsakaici kuma an sarrafa shi don ya kasance mai dorewa.

Binciken tsarin fim ɗin CPP da amfani da kayan masarufi

Tsarin Fim ɗin 'yan wasan CPP yana kama da na wasu nau'ikan fina-finan marufi da dama. A halin yanzu, samar da masana'antar cikin gida galibi fim ne mai launuka uku da aka haɗa tare. Tsarin mai matakai uku shine: Layer rufe zafi, Layer tallafi, da Layer na corona. Tabbas, kayan da ake buƙata a cikin tsarin samar da fim ɗin retort, fim ɗin aluminum, da fim ɗin haɗin gwiwa na yau da kullun tabbas sun bambanta. Wannan labarin Editan yayi taƙaitaccen bayani da bincike mai sauƙi:

Babban kayan da ake amfani da su a sama na CPP shine PP, amma kayan da ake amfani da su a cikin fina-finai daban-daban sun bambanta. Ana amfani da PP homopolymer, binary copolymer, da ternary copolymer tare a cikin samar da fim kuma suna aiki tare da juna. Saboda ana buƙatar rufe murfin zafi a zafi, ana buƙatar kayan don samun ƙaramin wurin narkewa, ingantaccen narkewar zafi, zafin rufe zafi mai faɗi, da kuma sauƙin rufewa; Layer na tallafi yana taka rawa a cikin fim ɗin, yana ƙara tauri na fim ɗin yayin da yake rage Farashi; Layer na corona yana buƙatar bugawa ko ƙarfe, wanda ke buƙatar matsakaicin matsin lamba a saman. Ya kamata a sami tsauraran ƙuntatawa kan ƙara ƙarin abubuwa a cikin resin, kamar layin corona na substrates da aka lulluɓe da aluminum, saboda ana buƙatar saman samfurin ya zama mai laushi ga ƙarfe kamar Aluminum dole ne ya sami ƙarfin mannewa mai ƙarfi kuma har yanzu yana kula da kwanciyar hankali da tauri mai kyau bayan ƙafewa. Saboda haka, dole ne a yi amfani da kayan corona na musamman da aka lulluɓe da aluminum don samarwa.