Ciaj cua tsaus ntawm kev xaiv BOPP thermal lamination film

Kam txog Thermal Stability thiab Process Window Limitations

Shrinkage, Warping, thiab Morphological Shifts Above 70¾90°C

Thaum cov phaj lamination thermal BOPP tau qhov cua sov heev, lawv yuav muaj kev cuam tshuam txog qhov ntsiab lus uas tsis tuaj yeem kho dua. Yog tias lawv tau ua kom sov hauv qhov cua sov ntawm 70 degrees Celsius los sis thaum ntev, cov khoom yuav pib npaj qhov crystal structure ntawm nws, thiab yog li ntawd yuav muaj kev npaj txog 2.5 percent hauv qhov dav ntawm cov phaj siv nyob rau hauv kev siv tseem ceeb. Qhov no yuav ua rau muaj teeb meem loj rau cov khoom siv uas muaj ntau daim phaj los ua, vim tias cov khoom ntau yam yuav npaj thiab ntxuav nrog qhov cua sov ntau yam, thiab yog li ntawd yuav muaj kev tswj hwm hauv cov khoom siv thiab yuav ua rau cov pob ntawm cov khoom siv npaj mus rau saum toj. Qhov no yuav raug dua thaum qhov cua sov tau 90 degrees Celsius vim tias cov polymer chains yuav pib npaj ntxuav nrog qhov cua sov heev dua, thiab yog li ntawd yuav ua rau cov phaj yuav sov heev dua thiab tsis tuaj yeem tswj hwm kev tshuaj ntxiv. Cov kev xav xav hais tias kev tswj hwm kev tshuaj ntxiv yuav loss 30 percent hauv qhov no. Cov kev cuam tshuam no yuav ua rau muaj kev nyuaj siab rau cov seal ntawm cov khoom siv uas siv rau cov khoom uas muaj cua sov thiab cov khoom siv rau kev tshuaj ntxiv rau cov khoom siv rau kev tshuaj ntxiv thiab cov khoom siv rau kev tshuaj ntxiv, uas qhov ntsiab lus ntawm qhov ntsiab lus yuav tsum nyob ib puag ncig kom tsis muaj kev tshuaj ntxiv thiab tsis muaj kev tshuaj ntxiv.

Kev sib tham ntawm kev nyuaj rau hauv qhov chaw thiab kev puas tsuaj ntawm qhov cua sov ntev

Kuam ntxawv ntawm kev txhawb lub tshuab rau lamination yog qhov tseem ceeb rau kev pom qhov chaw uas cov khoom sib pab yuav tsum tau sib pab raws li qhov xav, thiab tsis txhob ua rau cov khoom muaj kev puas tsuaj. Lub peeling strength yuav tshwm sim ntau dua 40% thaum lub tshuab yog ntawm 80 thiab 95 degrees Celsius vim tias cov polymers yuav dhau los ntawm cov khoom kom zoo dua thiab tshwm sim zoo dua rau lub zog ntawm cov khoom. Tsis tas li ntawd, koj yuav tsum saib xyuas kom raug thaum lub tshuab loo heev. Thaum lub tshuab tshwm sim ntau dua 90 degrees rau ntau dua 8 seconds, qhov oxidative chain scission yuav tshwm sim, uas yuav ua rau lub tensile strength loss 15% thiab yuav ua rau cov khoom muaj duab ntsuag ntau dua. Qhov puas tsuaj no yog qhov tseem ceeb rau lub tshuab glass transition temperature ntawm cov film, lossis Tg. Cov films uas muaj Tg ntau dua 75 degrees yuav tshwm sim zoo, tab sis yuav tshwm sim ntau dua thaum muaj kev tshuab ntau hauv kev xa khoom lossis kev kho khoom. Rau cov neeg siv cov khoom tseem ceeb, kev tswj lub tshuab ntawm lub oven nyob rau hauv ±5 degrees yog qhov tseem ceeb. Nws yuav tshwm sim tseem ceeb dua thaum siv cov khoom tseem ceeb, xws li cov metallized films lossis cov printed layers uas yuav tsum muaj kev sib pab zoo thiab kev tswj cov khoom raws li qhov xav.

Tshuav tias cov ntaub ntawv sib sau zoo: Kev txhawb nqa rau lub zog, kev saum tob, thiab kev tswb kom tsis muaj qhov tsis zoo

Corona los yog Primer-Based Activation rau kev sau zoo thiab zoo

Kuam ntxawv ntawm cov ntsiab lwm yuav tsum yog qhov tseem ceeb heev thaum ua kom BOPP thermal lamination ua haujlwm zoo. Corona treatment yog qhov uas siv lub tsheb tshuaj tso rau hauv qhov ntsiab lwm uas txhawb cov ntsiab lwm yuav tshaj plaws. Txoj kev no ua haujlwm zoo rau cov kev ua haujlwm lamination uas nyuaj dua rau cov ntsiab lwm polyolefin. Tiamsis rau cov kev ua haujlwm uas nyuaj dua, tias li cov ntsiab lwm uas muaj cov ntaub ntawv metal los sis cov ntaub ntawv polymer uas tsis tau txhawb lawm, cov primer-based activation yuav muaj kev ua haujlwm zoo dua. Thaum cov ntsiab lwm ntawm cov ntaub ntawv hauv qhov xyoo 2023, cov primer ua rau cov teeb meem ntawm kev nyhaum ntau dua 43% ntau dua li cov corona treatment xwb rau cov ntsiab lwm uas nyuaj no. Tiamsis muaj cov teeb meem rau ob qhov kev no. Yog tias tsis txhawb ntau dua, qhov nyhaum yuav ntau dua. Yog tias txhawb ntau dua, cov ntsiab lwm yuav puas los sis yuav ntau dua rau qhov ntsiab lwm vim cov oxidation los sis yuav ntau dua.

Cov caij uas ua rau cov ntsiab lwm kub, kub, thiab tsis nyhaum

Thaum cov khoom sib tw ntsib, ntsib, lossis tawg tshem, nws yog rau qhov muaj peb qhov teeb meem loj uas ua ke: cov khoom sib tw tsis zoo, kub tsis zoo, thiab kev tswj kev txaus ntseeg hauv qhov web. Qhov muaj cov qhov cua lossis cov dej kub nyob rau hauv qhov web yog qhov ua rau muaj qhov tsis zoo uas tsis tuaj yeem tswj tau zoo. Khiav cov khoom sib tw los ntawm alcohol yog qhov ua rau muaj kev pab dua li 2/3 ntawm kev ua haujlwm ntawm lub tsev kho mob. Yog tias neeg pom qhov ntsib ntsib, lawv yuav tsum xyuam xyuam seb puas muaj qhov kub ntau heev rau hauv cov roler (yog tias kub ntau dua 15 degrees Celsius, ces nws yog ntau heev). Khiav cov kub hauv qhov web yuav pab tshem qhov teeb meem no. Yog tias cov khoom sib tw tawg tshem kom tag, cov thawj tswj yuav tsum xyuam xyuam qhov kev khiav cov khoom sib tw, thiab tswj kev txaus ntseeg zoo thaum ua haujlwm.

• Kev khiav cov khoom sib tw zoo tshaj plaws (±2 µm)
• Kev txaus ntseeg hauv qhov web tau tswj nyob rau hauv 1.5¾2.5 N/mm² thaum khiav
• Kev ntxuag hluav taws xob uas muaj qhov siab ntawm 5°C/ntuj los ntawm kev txuag kom tsis muaj kev puas tsuaj hauv qhov chaw

Thaum xa BOPP thermal lamination film uas muaj cov cim sib txawv, qhov sib txawv ntawm qhov loj thiab qhov me nyob rau hauv ±0.2 mm yuav pab tshem tawm qhov kev ntxuag rau sab nraud uas ua rau sab nraud ntsiag. Kev txuag tom qab ntxuag rau hauv 40% RH rau 48 teev yuav pab tso cai rau qhov loj thiab me ntawm qhov chaw thaum muaj kev sib txawv ntawm qhov ntxuag.

Sib npaug BOPP Thermal Lamination Film rau kev siv thiab qhov loj thiab me uas muaj kev xav tau

Qhov loj thiab me, kev sib npaug ntawm kev ntxuag, thiab kev sib npaug ntawm kev ua haujlwm rau hauv kev xa cov khoom uas muaj khoom noj, khoom siv rau lub cev, thiab khoom kho mob

Qhov loj ntawm lub qhov rov qab yog qhov tseem ceeb heev rau kev xam txog yuav li cas nws tuaj yeem rov qab cov lus tsis zoo, siv rau kev ua haujlwm thiab kev sib koom ua haujlwm nrog cov kev sib tham ua haujlwm. Ntau yam khoom siv rau kev kho cov khoom noj tau siv lub qhov rov qab uas muaj qhov loj ntawm 20 rau 30 microns uas muaj qhov pom tau thiab tsis muaj kev nyuaj rau cov khoom noj, thiab siv rau kev ua haujlwm ntawm FDA uas peb yuav tsum ua raws li. Rau cov khoom siv rau kev kho cov khoom tshiab, cov neeg ua haujlwm yuav siv cov qhov rov qab uas muaj qhov loj ntawm 15 rau 25 microns uas muaj qhov pom tsis zoo thiab cov qhov rov qab uas muaj qhov pom zoo rau kev siv hauv tsev khoom, uas muaj qhov pom zoo dua rau hauv tsev khoom. Rau cov khoom siv rau kev kho cov khoom tshwj xeeb, cov neeg ua haujlwm yuav tsum siv cov qhov rov qab uas muaj qhov loj ntawm 25 rau 40 microns uas muaj kev rov qab rau kev tswj hwm qhov tswv yim rau cov khoom tshwj xeeb kom tsis tau kev tswv yim. Cov khoom siv rau kev kho cov khoom uas muaj qhov rov qab uas muaj qhov loj ntawm 12 rau 18 microns yog zoo heev rau kev kho cov khoom uas muaj qhov rov qab, vim nws tuaj yeem txo qhov loj thiab tsis cuam tshuam rau qhov zoo ntawm cov khoom. Thaum ib leeg, cov khoom siv uas muaj qhov rov qab uas muaj qhov loj ntau dua 40 microns yog tseem ceeb rau kev kho cov khoom uas muaj qhov rov qab kom muaj qhov zoo thiab tsis muaj kev cuam tshuam. Thiab no yog qhov tseem ceeb uas peb yuav tsum paub txog kev tswj hwm qhov zoo: yog tias qhov loj ntawm cov qhov rov qab tsis sib xws ntau dua 5% ntawm cov qhov rov qab uas muaj ntau yam, ces yuav muaj kev nyuaj rau cov qhov rov qab kom tawg tawm thaum muaj kev hloov qhov cua rau hauv kev sib tso cov khoom lossis hauv kev kho cov khoom.

Sourcing BOPP Thermal Lamination Film Tshuab Kev Ntsuas Qhov Loog Rau Qhov Tswv Yim Thiab Qhov Ntshav

Thaum ua haujlwm nrog BOPP films rau kev ua haujlwm lamination uas nyob hauv kev pib siab, thaum peb ua nws los ntawm qhov chaw uas peb xav tau thiab muaj cov cim tshwj xeeb, ces nws yuav pab txo qhov teeb meem ntawm kev kho thiab kev tso cua rau hauv kev ua haujlwm uas yuav pab txo kev pib. Thaum peb txo qhov dav ntawm cov film raws li qhov tseem ceeb rau cov khoom siv uas siv los ntawm kev tso cov pouch, nws yuav pab loj. Peb tau pom qhov tshuaj tshuaj lossis qhov tshuaj tshuaj uas tsis muaj qhov tseem ceeb los ntawm qhov dav ntawm cov film tau txo zoo li 20% thaum qhov kev sib npog no ua tau zoo. Thiab yog tsis txhob hlub txog kev tswj cov kab rov qhia (roll lengths) uas pab txo kev sib npog rau hauv kev sib npog ntawm cov khoom siv, uas pab txo kev sib npog rau hauv kev sib npog ntawm cov khoom siv. Rau cov khoom siv uas muaj cov duab tshwj xeeb uas tsis tuaj yeem siv rau cov khoom siv uas muaj duab tshwj xeeb, cov film uas muaj duab tshwj xeeb (die cut films) yog qhov tseem ceeb heev. Nws cov duab tshwj xeeb yuav cover cov kab rov qhia raws li qhov tseem ceeb uas tsis muaj kev tshuaj tshuaj los ntawm kev siv adhesive. Lub tseem ceeb tshwj xeeb ntawm cov khoom siv uas muaj qhov tseem ceeb tshwj xeeb (top tier converters) lawm no siv digital templates los txo qhov dav ntawm cov film raws li qhov tseem ceeb ntawm cov khoom siv, uas tshwj xeeb yog ib leeg ntawm 0.5 millimeter. Qhov kev tswj xyuas no yuav pab txo qhov tshuaj tshuaj los ntawm lub tsev ua haujlwm, uas pab cov khoom siv mus rau qhov tseem ceeb ntawm kev ua haujlwm uas tsis muaj kev tshuaj tshuaj rau hauv lub tsev ua haujlwm.

Tshuaj xyuam cov kev ua haujlwm los ntawm kev tshuaj xyuam tseem ceeb thiab kev sim hauv qhov chaw uas muaj kev sib thag

Kuam txawj ntse ntawm kev ua haujlwm rau cov ntaub ntawv hauv qhov chaw uas muaj kev sib koom haum xeeb yog qhov tseem ceeb rau kev txheeb xyuas seb yuav tau li cas cov BOPP thermal lamination films yuav muaj kev nyab xeeb thaum lawv tshuav los rau hauv tswv yim. Peb ua cov kev txheeb xyuas uas muaj kev npaj ntxiv (accelerated aging tests) uas muaj kev txheeb xyuas rau cov ntaub ntawv los ntawm qhov hnyiag (freezing temperatures) -20°C thiab qhov cua sov (heat) mus rau 70°C, kev txheeb xyuas rau qhov cua sov thiab qhov cua ntsuag (high humidity levels) uas nyob rau hauv 85%, thiab kev txheeb xyuas rau qhov cua sov (UV light). Cov kev txheeb xyuas no pab peb pom cov teeb meem uas muaj rau qhov ntaub ntawv nyha (sticking together), qhov ntaub ntawv tshuav (sealing properly), lossis cov ntaub ntawv tshuav (coatings breaking down) ntev dua li qhov peb tuaj yeem pom rau cov khoom thaum lawv tshuav los rau hauv tswv yim. Thaum peb txheeb xyuas rau cov ntaub ntawv uas muaj cov lauj (custom sized films), peb kuj txheeb xyuas seb cov kab lauj (cut edges) yuav tshuav (stay sealed) li cas thaum lawv tau txheeb xyuas rau qhov cua sov thiab qhov cua hnyiag (temperature changes) uas muaj nyob rau hauv kev xa khoom rau lub ntiaj teb. Cov kev txheeb xyuas rau qhov cua sov thiab qhov cua hnyiag (pressure and stress tests) ntawm peb kuj sim rau qhov uas yuav muaj thaum xa khoom—pom rau qhov cua sov (vibrations) los ntawm cov xe (trucks), qhov cua sov (weight pressures) uas muaj nyob rau hauv qhov peb muaj cov pallets 8 meters uas muaj cov khoom ntau dua (stacked on top of each other), thiab cov kev hloov (movement) uas muaj thaum xa khoom rau hauv cov container. Txhawm rau kev rap (industry reports), cov thawj khoom uas ua cov kev txheeb xyuas no ntev dua li yuav muaj kev txawj ntse (product failures) nyob rau hauv 63% ntev dua li yuav muaj. Qhov no txhawm rau kev txawj ntse (better matching) rau cov neeg siv khoom (clients) uas muaj kev xav tau rau hauv cov kev xa khoom (supply chains), cov kev xa khoom tshuav (expensive recalls) nyob rau hauv qhov ntev dua li yuav muaj, thiab cov ntaub ntawv tshuav (wasted materials) nyob rau hauv qhov ntev dua li yuav muaj.

FAQ Qeb

Yus li cas yog kev cuam tshuam ntawm qhov ceev ntau rau BOPP thermal lamination films?

Qhov ceev ntau yuav ua rau muaj kev txiav txim siab thaum twg rau BOPP thermal lamination films, los ntawm kev npog, kev khaub ncua, thiab kev txo ntawm kev tiv thaiv rau kev puas, uas muaj kev nyuaj rau kev kho rau cov kab mob.

Kev nyooj qhov ntsuas yuav sib tov li cas rau qhov ceev thaum lamination?

Kev nyooj qhov ntsuas yuav ntxiv mus rau 80 thiab 95 degrees Celsius, tab sis thaum qhov ceev ntau dua 90 degrees, kev tshuaj ntsuas yuav ua rau kev tshem tshem ntawm cov khoom sib sau, uas yuav txo kev nyooj qhov ntsuas thiab ua rau kev tshem tshem ntau dua.

Yus li cas yog cov kev txiav txim siab rau lub zog ntawm BOPP thermal lamination?

Cov kev txiav txim siab rau lub zog ntawm BOPP thermal lamination yog corona treatment thiab primer-based activation, uas pab ntxiv kev nyooj qhov ntsuas, tab sis lawv yuav tsum tau txiav txim siab raws li kev tswj hwm kom tsis txo kev puas rau lub film.

Yuav ua li cas kom tiv thaiv kev khaub ncua thiab kev tshem tshem rau BOPP films?

Kom tiv thaiv kev khaub ncua thiab kev tshem tshem yuav tsum tswj hwm kev hlau, tswj hwm qhov ceev, thiab tswj hwm kev nqus rau hauv lub web, thiab tswj hwm kev sau lub adhesive raws li kev tswj hwm.

Yus yuav tsum xav txog dab tsi rau cov ntawv BOPP uas muaj qhov loj thiab tsis tau muab xa tuaj?

Cov ntawv BOPP uas muaj qhov loj thiab tsis tau muab xa tuaj yog qhov muaj kev sib thaj thiab qhov ntau dua, uas yog qhov tseem ceeb rau kev txiav txim siab qhov loj tshwj xeeb hauv kev tsim kho thiab qhov ntau dua rau kev pab tshem tawm hauv kev sau.