Lub hauv paus sealing lub hnab ntim tshuab tuaj yeem ua ntau hom kev hloov pauv zaj duab xis. Cov no suav nrog ib qho - txheej polyethylene, ntau- txheej txheej zaj duab xis thiab biodegradable resins. Cov khoom siv yuav tsum tsim kom muaj lub tshav kub zoo nyob rau hauv nruab nrab ntawm lub hnab. Cov stitches khiav los ntawm sab saum toj mus rau hauv qab. Cov yeeb yaj kiab kuj tseem tuaj yeem raug txiav, folded thiab stacked yam tsis muaj wrinkling lossis tearing. Zhuxin Machinery muaj ntau tshaj 30 xyoo dhau los hauv cov khoom ntim khoom. Nws lub hauv paus foob tuaj yeem tuav cov yeeb yaj kiab ntawm 0.01mm thiab 0.20mm tuab thiab nruab nrab ntawm 400mm thiab 1,000mm dav. Cov khoom lag luam suav nrog ntau yam khoom siv hauv cov khoom noj, khw muag khoom thiab ntim khoom lag luam.
Cov ntu hauv qab no yuav piav qhia txog hom ntawm txhua yam khoom siv, kev teeb tsa tseem ceeb, thiab kev foob zoo.
Polyethylene zaj duab xis: LDPE, HDPE, LLDPE
Polyethylene yog cov khoom siv feem ntau siv hauv nruab nrab lub hnab ntim tshuab. Nws kuj muaj qhov loj tshaj plaws ntawm kev lag luam ntim khoom muag thoob ntiaj teb. Muaj peb qib (tsawg-polyethylene ntom ntom, HDPE, thiab LLDPE). Txhua qib muaj cov khoom sib khi sib txawv.
LDPE yog kaw ntawm 120-160℃. Nws muaj kev muag khoom kub zoo thiab kev sib khi dav. Qhov no ua rau nws yooj yim rau kev khiav lag luam ntawm cov tshuab nrog kev tswj qhov kub thiab txias. HDPE yuav tsum muaj qhov kub thiab txias ntawm 140-180 degrees Celsius. Nws cov qauv siv lead ua melts thiab hardens sai, yog li lub foob me me. Tsawg ntom polyethylene yog nruab nrab ntawm qhov ntom ntom polyethylene thiab HDPE. Nws yog feem ntau tov nrog tsawg-density polyethylene los txhim kho wearability thiab tuav zoo sealing kev ua tau zoo.
Melt flow index (MFI) kuj tseem ceeb. Nws qhia tau hais tias yuav ua li cas cov yeeb yaj kiab ntws los ntawm qhov kub thiab txias. Cov yeeb yaj kiab ntsuas 0.3 - 2.0 g / 10 min MFI ntawm 190℃thiab ISO 1133 feem ntau yog siv hauv hnab ntim khoom. MFI qis dua 0.3 tuaj yeem ua rau cov resin tawv dhau los siv rau kev sib khi kom huv. MFI saum toj no 4.0 ua rau nws yooj yim dua rau daim nyias nyias los kua muag thaum lub sij hawm stacking. Polyethylene tseem yog cov txheej txheem sealant siv dav tshaj plaws hauv cov ntim khoom muag, suav txog ntau dua 60 feem pua ntawm lub ntiaj teb sealant zaj duab xis kev lag luam, raws li Smithers.
Polypropylene zaj duab xis: CPP thiab BOPP
Muaj ob hom ntaub ntawv tseem ceeb ntawm Polypropylene zaj duab xis rau qhov chaw foob cov yeeb nkab: cam khwb cia polypropylene (CPP) thiab biaxially oriented polypropylene (BOPP). CPP yog lub tshav kub- zaj duab xis sealable nrog pob tshab zoo. Nws qhov sib khi yog 140-170℃. Nws khiav zoo li servo-driven center foob tshuab vim nws du nto ua haujlwm zoo los ntawm kev sau npe photoelectric.
BOPP txawv. Txheem BOPP tsis tuaj yeem kub - kaw. Thaum lub sij hawm tsim khoom, nws tuaj yeem ncav cuag ob qho kev qhia. Qhov no ua rau nws mus rau melting point tshaj qhov ntau ntawm tus qauv kub foob pas nrig. Txhawm rau siv BOPP ntawm txoj kab nruab nrab, koj xav tau BOPP kub kaw nrog co-extruded copolymer sealant txheej. Koj tuaj yeem siv cov qauv laminated nrog BOPP ua ib txheej txheej thiab CPP lossis PE ua lub sealant sab hauv.
ASTM F1921 yog tus qauv xeem txoj hauv kev rau cov ntsia hlau polymer films. Nws pab txiav txim siab seb BOPP lossis CPP tuaj yeem khaws lub foob taut thaum lub sij hawm nqes nqes ntsug puv. Cov yeeb yaj kiab ntawm ASTM F1921 muab kev sib khi ruaj khov ntawm lub tshuab ceev. Cov yeeb yaj kiab uas ua tsis tiav qhov kev xeem tuaj yeem qhib rau ntawm qhov chaw nruab nrab.
Laminated thiab Multilayer Composite Films
Laminated films siv ob los yog ntau dua cov ntaub ntawv. Lawv muab kev tiv thaiv ya raws thiab tiv thaiv oxygen, luam ntawv zoo, thiab thermal sealing hauv ib zaj duab xis nyias. Ib hom laminated zaj duab xis ntawm qhov chaw foob lub hnab yog PET ua txheej txheej luam ntawv, txhuas ntawv ci raws li txheej thaiv txheej thiab LDPE ua txheej txheej txheej sealant. Cov membranes no feem ntau pom muaj nyob rau hauv ntim khoom noj txom ncauj, hnab kas fes, thiab cov hnab sawv ntsug.
A Center Seal Hnab Tshuabtuaj yeem ua cov yeeb yaj kiab laminated. Thickness thiab nruj ntawm zaj duab xis yuav cuam tshuam rau kev teeb tsa ntawm lub tshuab. Peb- txheej txheej vaj huam sib luag nrog lub thickness ntawm 80-120 microns tuaj yeem thauj txog 60-100 hnab ib feeb. Tsib txheej ntawm cov laminates uas muaj zog heev nrog cov tuab ntawm 150 txog 200 microns yuav xav tau qeeb qeeb ntawm 40-60 hnab ib feeb. Nws kuj tseem yuav xav tau kev foob siab dua kom tau txais cov txheej txheem sealant kom zoo sealing kub.
Lub zog sealing ntawm laminated films feem ntau yog kuaj raws li ASTM F88. Qhov kev sim no ntsuas lub zog xav tau los cais cov hlua khi. Daim ntawv thov kev foob hauv nruab nrab feem ntau siv qhov tseem ceeb xws li 2 txog 6 N rau 15 mm ntawm qhov dav dav, nyob ntawm kev siv lub hnab. Kev ntim khoom noj feem ntau xav tau lub zog foob ntau dua los tuav kev thauj thiab tuav.
Biodegradable thiab Compostable Films
Kev hloov mus rau kev ntim khoom ruaj khov tau ua rau cov yeeb yaj kiab biodegradable ntau dua.Lub Center Seal Hnab Tshuabtuaj yeem ua cov khoom sib xyaw ntawm polyethylene lactate, PBAT thiab hmoov txhuv nplej siab. Txhua yam khoom yuav tsum muaj lub tshuab sib txawv.
PLA ntsaws ruaj ruaj ntawm 80-110 degree. Qhov no yog qis dua PE. Nws kuj muaj qhov nqaim sealing ntau ntawm + -5℃. Kub dhau qhov no tuaj yeem ua rau cov ntsaws ruaj ruaj tsis muaj zog, tig daj lossis ua nkig. Lub tshuab ntsuas kub yuav tsum yog ± 2℃kom ruaj ntseg ntawm PLA ntau lawm. PBAT seals ntawm 110-140℃Nws yog airtight ntau. Nws yog feem ntau tov nrog hmoov txhuv nplej siab los txo cov nqi thiab txhim kho biodegradation. Cov kev sib tov no yooj yim dua rau kev ua, tab sis tej zaum yuav xav tau qis qis dua vim tias lawv softer thiab elastic dua li PE zaj duab xis.
European Bioplastics tshaj tawm tias thoob ntiaj teb bioplastics muaj peev xwm loj hlob tuaj. Cov kev cai ntim khoom xws li EU Ntim thiab Ntim Cov Khoom Siv Pov Tseg kuj tau txhawb nqa kev loj hlob. Txoj cai tswj hwm kev rov ua dua tshiab thiab muaj pes tsawg leeg ntawm cov ntim khoom muag hauv European lag luam. Raws li ASTM D6400 cov ntaub ntawv pov thawj, ntau lub npe yuav tsum muaj cov hnab ntim hauv nruab nrab nrog kev ua haujlwm zoo thiab kev pabcuam tsim nyog.
Material Compatibility Factors: determinants ntawm processability
Tsis yog txhua zaj yeeb yaj kiab ua haujlwm ntawm txhua lub tshuab. Tsib yam txiav txim siab seb cov khoom puas tuaj yeem ua tiav ntawm ib qho chaw foob kab:
| Cov xwm txheej | Standard Machine Range | Vim li cas thiaj tseem ceeb |
|---|---|---|
| Zaj duab xis thickness | 0.01-0.20 hli | Tsawg dua 0.01 hli, daim nyias nyias tuaj yeem tsim kua muag thaum pub mis. Tom qab 0.20 hli, lub seal bar yuav tsis dhau los ntawm cov khoom kom zoo. |
| Foob qhov kub thiab txias | 80-180 degree | Lub tshuab qhov kub thiab txias yuav tsum tau them los ntawm cov yeeb yaj kiab sealing ntau ntawm cov yeeb yaj kiab. |
| Melt Flow Index | 0.3 -4.0 g/10 mins | Cov nqi qis txhais tau hais tias daim nyias nyias nyias thiab tsis ntws zoo. Cov nqi siab dua tuaj yeem ua rau cov yeeb yaj kiab nkig thiab tawg thaum lub sijhawm folding. |
| Kev sib txhuam yam | 0.2–0.5 | Hauv qab 0.2, zaj duab xis yuav swb rau ntawm lub tog raj kheej. Tom qab 0.5, zaj duab xis yuav khi thiab wrinkle. |
| Tensile zog | Ntau dua lossis sib npaug rau 15 MPa (MD) | Cov yeeb yaj kiab nrog lub tshuab kev taw qhia tsawg dua 15 MPa tuaj yeem ncab thiab ua rau muaj qhov yuam kev. |
Lub zog tensile yog ntsuas raws li ISO 527 yas tensile lub zog kuaj tus qauv). Cov yeeb yaj kiab uas ua tau raws li tsib yam no feem ntau tuaj yeem khiav yam tsis muaj cuab yeej tshwj xeeb. Zaj duab xis sab nraum cov kab no tej zaum yuav xav tau kev txhim kho kev noj zaub mov zoo, kev tswj nruj nruj lossis cov khoom sib khi.
Cov lus nug nquag
Lub tshuab sealing hauv nruab nrab puas tuaj yeem tuav ob leeg PE thiab PP zaj duab xis?
Yog lawm. Koj yuav tsum tau kho qhov kub thiab txias, pub nro thiab ceev ntawm lub foob. PE feem ntau ua haujlwm ntawm 120-160 degrees Celsius. PP feem ntau ua haujlwm ntawm 140-170 degree. Nws feem ntau yuav siv li 15-25 feeb los hloov cov ntaub ntawv ntawm lub tshuab servo-tsav, nrog rau kev hloov kho kub.A Center Seal Hnab Tshuabtuaj yeem hloov ntawm cov ntaub ntawv no nrog kev teeb tsa kom raug.
Dab tsi thickness ntawm biodegradable zaj duab xis tuaj yeem tshuab ua haujlwm?
Feem ntau cov kab foob hauv nruab nrab tuaj yeem tuav PLA thiab PBAT zaj duab xis los ntawm 0.02 hli txog 0.08 hli. Hloov lub foob bar ntawm siab dua yuav tsum tau rau Compostable films saum 0.10 mm. Biodegradable resins feem ntau muaj cua sov tsawg dua li polyethylene.Lub Center Seal Hnab Tshuabfeem ntau ua tau zoo tshaj plaws nrog biodegradable films nyob rau hauv lub thinner ntau yam.
Yuav ua li cas los xyuas qhov zoo ntawm cov ntsaws ruaj ruaj tom qab ntau lawm?
Lub zog foob raug kuaj nrog ASTM F88 ntawm 180℃exfoliation. Lub foob hla dhau tuaj yeem tiv taus 2 -6 N rau 15 mm dav. Kev ntaus raug kuaj raws li ASTM F1921. Qhov no yuav xyuas tias lub foob tseem kaw tom qab tsim. Qhov no yog ib qho tseem ceeb rau siab - cov kab ceev uas ntim cov hnab ua ntej lub foob kom txias tag.A Center Seal Hnab Tshuabnrog kev tswj xyuas qhov kub thiab txias yuav pab ua kom muaj kev sib khi zoo nyob thoob plaws txhua tus qauv kuaj.
Xaus:
Lub Tshuab Seal Lub Tshuab tuaj yeem ua LDPE, HDPE, LLDPE, CPP, cua sov- sealable BOPP, laminated films, thiab biodegradable films xws li PLA thiab PBAT. Cov khoom siv yuav tsum ua raws li lub tshuab nrog lub thickness ntawm 0.01-0.20 hli, sealing ua kom kub ntawm 80-180℃thiab lub zog tensile yam tsawg 15 MPa. Cov yeeb yaj kiab tau lees paub raws li ASTM D6400 thiab ASTM F88 muab cov qauv zoo rau cov neeg yuav khoom thiab cov tswj hwm.
Zhuxin Machinery muab cov chaw ntim cov hnab ntim khoom, ISO 9001: 2015 thiab CE cov qauv. Lub tshuab siv servo- tsav tswj kev noj zaub mov thiab kev sau npe photoelectric rau ntau hom yeeb yaj kiab. Rau kev teeb tsa tshuab raws li nyias- cov ntaub ntawv zaj duab xis, mus saib cnzhuxinmachine.com.
