Sab Hauv FDA: Daim Ntawv Qhia Tag Nrho ntawm FDA Kev Ua Raws Cai rau Daim Ntawv Sib Chwv Khoom Noj thiab Daim Ntawv PE Txheej
Thaum koj tau txais qhov chaw Daim ntawv PE coated, Cupstock, los yog kiv cua khob ntawv, “Kev ua raws li FDA” yuav luag txhua lub rooj vag uas txhua tus neeg yuav khoom hauv Asmeskas teeb tsa.
Paperjoyyog tus neeg muag khoom PE hauv Suav teb-Daim Ntawv Txheej, lub kiv cua khob thiab khob ntawv uas pab cov neeg xa khoom ntim khoom noj hauv North-American thiab cov chaw tsim khob. Txawm li cas los xij, “FDA ua raws li” txhais li cas tiag, seb daim ntawv pov thawj puas muaj, thiab yuav ua li cas los xyuas kom meej tias nws yog ib puag ncig los ntawm cov lus dab neeg. Phau ntawv qhia “Hauv FDA” no taug kev hauv Tebchaws Meskas cov txheej txheem tswj hwm kev sib cuag zaub mov, cov cai sib cais rau daim ntawv piv rau polyethylene txheej, lub ntsiab lus tiag tiag ntawm qhov qhia tseem ceeb – chloroform-soluble extractives – thiab yuav ua li cas cov neeg yuav khoom tuaj yeem lim tawm cov neeg muag khoom “cuav-ua raws li” ntawm theem hais nqe.
Vim Li Cas Thiaj Yuav Tsum Tau “Sab Hauv FDA” — Cov Kev Cai Tswjfwm Kev Sib Txuas Lus Khoom Noj Hauv Tebchaws Meskas
Tebchaws Meskas txoj kev saib xyuas cov khoom siv sib cuag nrog zaub mov (FCM) yog nyob ntawm Lub Chaw Haujlwm Saib Xyuas Khoom Noj thiab Tshuaj (FDA), uas muaj keeb kwm los ntawm Txoj Cai Khoom Noj, Tshuaj, thiab Tshuaj Pleev Xim ntawm Tsoom Fwv Tebchaws (FD&C Act). Txoj Cai Hloov Kho Khoom Noj Khoom Haus Xyoo 1958 tau tsim lub hauv paus ntsiab lus tias txhua yam khoom uas tau ntxiv rau hauv zaub mov yuav tsum tau kev tso cai ua ntej – qhov pib ntawm Txoj Cai Khoom Noj Khoom Haus (FCS).
FDA tsis “muab daim ntawv pov thawj” rau ib daim ntawv lossis ib yob ntawm cov khoom tshwj xeeb Daim ntawv PE coated; es tsis txhob, nws yuam kom muaj ib pawg cai uas nthuav dav thoob plaws 21 CFR 170–189. Txhawm rau kom taug kev, cais peb txoj kev ua raws li txoj cai:
– Daim Ntawv Thov Khoom Noj Khoom Haus (FAP): txoj kev qub dua, xav tau cov pov thawj kev nyab xeeb loj xa mus rau FDA nrog cov voj voog tshuaj xyuas ntev.
– Daim Ntawv Ceeb Toom Txog Kev Sib Chwv Khoom Noj (FCN): txoj kev tseem ceeb txij li xyoo 1997. Ib lub tuam txhab xa daim ntawv ceeb toom; yog tias FDA tsis tawm tsam hauv 120 hnub, daim ntawv ceeb toom yuav “muaj txiaj ntsig.” FCNs khaws cov tshuaj kom zais cia thiab tsuas yog muaj txiaj ntsig rau tus neeg ceeb toom xwb.
– GRAS (Feem Ntau Pom Zoo Li Muaj Kev Nyab Xeeb): rau cov tshuaj uas feem ntau cov kws tshaj lij lees paub txog kev nyab xeeb, los ntawm kev xaus lus GRAS lossis kev ceeb toom GRAS.
Cov khoom noj khoom haus ntxiv tsis ncaj qha – ntawv, ntawv thawv, thiab cov yas txheej – nyob hauv 21 CFR 175–178. Daim Ntawv Thiab Daim Ntawvpawg thawj coj yog rau 21 CFR 176; cov yas thiab cov polymers yog rau 21 CFR 177. Qhov ntawd yog qhov kev tswj hwm tiag tiag rau cov khoom sib xyaw zoo li PE coated ntawv (ntawv puag + PE txheej).
Tshooj Ntawv: Kev Txheeb Xyuas Tag Nrho ntawm 21 CFR 176
21 CFR 176 yog mob siab rau cov khoom ntawv thiab cov ntawv paperboard, nrog rau cov ntu faib kom meej meej:
– 21 CFR 176.100: cov kev cai dav dav, txhais cov ntsiab lus thiab cov luag haujlwm tseem ceeb rau ntawv thiab ntawv thawv.
– 21 CFR 176.110: daim ntawv teev cov tshuaj uas siv tau zoo ua cov khoom ntawm daim ntawv thiab cov ntawv ua los ntawm ntoo – cov neeg sawv cev ntsuas qhov loj, cov khoom sau, cov xim, thiab lwm yam.
– 21 CFR 176.170: tswj cov khoom ntawm daim ntawv thiab cov ntawv ua los ntawm cov ntoo uas sib cuag nrog cov khoom noj uas muaj dej thiab muaj roj, siv cov tshuaj rho tawm uas yaj tau hauv chloroform ua cov cim qhia txog cov organic uas rho tawm tau tag nrho – qhov ntsuas uas feem ntau thov hauv Tebchaws Meskas rau daim ntawv sib cuag nrog cov khoom noj.
– 21 CFR 176.180: teev cov tshuaj uas raug tso cai uas siv tau ua cov khoom ntawm daim ntawv thiab cov ntawv ua los ntawm cov ntawv uas siv rau kev sib cuag nrog zaub mov qhuav, nrog rau kev txwv kev siv raws li qhov hnyav. Nco ntsoov: ntu no tsis teeb tsa cov lej rho tawm peb theem ntawm 0.5 / 0.04 / 0.08 mg/in² – cov kev txwv rho tawm ntawd yog rau 21 CFR 178 adjuvants subparts (piv txwv li, 178.2010 / 178.3120), tsis yog 176.180.
– 21 CFR 176.200 / 176.210: cov seem ntawm lub hau thiab kev tsiv teb tsaws chaw ntawm cov tshuaj defoamers thiab cov tshuaj tua kab mob hauv cov khoom tiav.
Lub ntsiab lus tseem ceeb: 176.170 tswj tag nrho cov organic uas rho tawm tau ntawm daim ntawv tiav, thaum 176.110/176.180 tswj seb cov tshuaj ntxiv rau hauv puas raug tso cai – pem hauv ntej thiab nraub qaum, lawv kaw lub voj voog ntawm lub hauv paus ntawv.
Lub Tsev Raug Cai ntawm Polyethylene Coating: 21 CFR 177.1520 (Olefin Polymers)
Daim ntawv PE coated tsis yog ib daim ntawv “ntawv” tab sis yog kev sib xyaw ua ke ntawm daim ntawv hauv paus ntxiv rau zaj duab xis polyethylene (PE). Lub hauv paus ntawv poob rau hauv 21 CFR 176, thaum zaj duab xis PE ntawd, ua ib txheej olefin polymer, yuav tsum sib cais ua kom tau raws li 21 CFR 177.1520 (Olefin Polymers).
177.1520 teeb tsa qhov huv thiab cov kev cai tshwj xeeb rau polyethylene thiab lwm yam olefin polymers, suav nrog qhov ceev thiab cov qab nthab extractive (piv txwv li, n-hexane extractives). Hauv lwm lo lus, daim ntawv PE coated uas ua raws li txoj cai yuav tsum ua tau raws li ob qho tib si 176.170 (tag nrho cov organics extractable ntawm lub hauv paus ntawv) thiab 21 CFR 177.1520 (kev huv ntawm cov polymer ntawm PE txheej) – tsis yog kab ib leeg tsis txaus.
Ib qho lus nug nquag nug: puas siv tau PE rov ua dua tshiab rau hauv txheej uas kov tau zaub mov? Tsis yog yam tsis muaj kev soj ntsuam thiab kev tso cai ntawm FDA. FDA tsis txwv tsis pub siv PE rov ua dua tshiab, tab sis cov polymers rov ua dua tshiab tsuas yog siv tau rau hauv cov ntawv thov kov tau zaub mov tom qab kev tshuaj xyuas tag nrho ntawm FDA, uas feem ntau ua rau FDA Tsis Muaj Tsab Ntawv Tsis Pom Zoo (NOL) rau cov txheej txheem rov ua dua tshiab tshwj xeeb. Cov PE rov ua dua tshiab uas tsis tau soj ntsuam tsis tuaj yeem siv ncaj qha rau cov txheej txheem kov tau zaub mov. Qhov no yog vim li cas cov neeg muag khoom ntawv PE coated raug cai hais txog “cov khoom siv PE qib zaub mov” – nws zam dhau qhov kev tsis paub meej ntawm cov ntsiab lus rov ua dua tshiab.
Lub Hauv Paus Tseem Ceeb: Cov Tshuaj Chloroform-Soluble Extractives, Piav Qhia
Qhov kev sim tshuaj chloroform-soluble extractives 176.170 yog qhov khoom uas tau saib xyuas tshaj plaws hauv daim ntawv ua raws li cov ntawv sib tw. Nws tsis ntsuas ib yam khoom tshwj xeeb; nws kwv yees tag nrho cov organic uas tuaj yeem tsiv teb tsaws chaw los ntawm qhov chaw sib cuag zaub mov – ib qho sawv cev hauv kev lig kev cai tag nrho.
Lub laj thawj:
1. Cov qauv no raug txiav mus rau qhov chaw uas paub tias yog qhov kov tau zaub mov thiab muab tso rau hauv cov tshuaj ua kom zaub mov zoo li no ntawm qhov kub thiab sijhawm uas tau teev tseg.
2. Cov khoom simulant raug tshem tawm thiab ua kom qhuav; cov seem raug rho tawm dua nrog chloroform.
3. Cov theem chloroform raug ua kom qhuav mus rau qhov hnyav tas li thiab hnyav, muab cov tshuaj rho tawm uas yaj tau hauv chloroform.
4. Faib los ntawm thaj chaw uas kov cov khoom noj kom tau mg/in², ces muab piv rau qhov txwv.
Chloroform siv dua li dej vim nws rho tawm ntau yam ntawm cov organic uas tsis yog polar thiab weakly polar – lipids, low-molecular-weight polymers, qee cov khoom pab ua – zoo dua sawv cev rau tag nrho cov organic uas tuaj yeem tsiv mus rau hauv cov zaub mov.
Qhov txwv 176.170 yog 0.5 mg/in² — tab sis nrog rau kev cai lij choj txwv: nyob rau hauv 21 CFR 176.170 https://www.ecfr.gov/current/title-21/part-176/section-176.170(c), tus lej 0.5 mg/in² no siv rau cov thawv siv ib zaug xwb ≤1 gallon (≈3.785 L); cov thawv siv ib zaug loj dua ua raws li 1.8 mg/in², thiab cov khoom siv rov ua dua muaj cov kev txwv sib cais. Cov khob ntawv thiab cov tais poob rau hauv pawg ≤1-gallon, yog li 0.5 mg/in² yog tus nqi lag luam de-facto — tsis tau qhov sib txawv ntawm txoj cai yuav tsum tsis txhob raug tshem tawm. Hauv metric: 1 in² = 6.4516 cm², yog li 0.5 mg/in² ≈ 0.0775 mg/cm². Txoj cai lij choj kuj tseem qhia txog cov xwm txheej rho tawm los ntawm hom zaub mov (aqueous, acidic, alcoholic, fatty) nrog rau cov khoom sib xws – dej distilled, 8% ethanol, 50% ethanol, n-heptane, 95% ethanol – npog txhua yam los ntawm kas fes thiab kua txiv hmab txiv ntoo mus rau cov khoom noj uas muaj roj.
“ND (Tsis Tau Tshawb Pom)” txhais tau tias qhov tshwm sim qis dua qhov txwv ntawm txoj kev tshaj tawm, tsis yog xoom kiag li – nws qhia tias qib qis dua qhov muaj peev xwm tshawb pom ntawm lub cuab yeej thiab qis dua 0.5 mg / in² txwv. Rau cov neeg yuav khoom, ND txhais tau tias muaj kev nyab xeeb ntau nyob rau hauv cov xwm txheej sib cuag nrog zaub mov ib txwm muaj.
FDA Khiav ntawm “Kev Ua Raws Li Tus Kheej” – Daim Ntawv Pov Thawj Dab Neeg vs. Qhov Tseeb
Lub ntsiab lus tseem ceeb tshaj plaws hauv phau ntawv qhia “Sab Hauv FDA” no: FDA tsis muab “daim ntawv pov thawj ua raws li txoj cai” rau cov khoom siv uas kov tau zaub mov. Cov kab lus hauv khw xws li “khoom muag tau ntawv pov thawj los ntawm FDA” lossis “tus lej ntawv pov thawj los ntawm FDA” tsis meej hauv kev cai lij choj. FDA ua haujlwm raws li tus kheej – lub luag haujlwm thiab pov thawj yog nyob ntawm lub tuam txhab, thiab kev ua raws li txoj cai yog nyob ntawm cov qauv tshwj xeeb thiab cov ntawv qhia kev xeem sab nraud, tsis yog daim ntawv pom zoo tas mus li.
Peb lub tswv yim uas feem ntau tsis meej pem:
– Khoom “Daim ntawv pov thawj FDA”: tsis muaj. FDA tsis muab daim ntawv pov thawj ua raws li cov khoom.
– Kev Sau Npe Rau Chaw Ua Haujlwm (FDA Kev Sau Npe Rau Chaw Ua Haujlwm Khoom Noj): raws li Txoj Cai Bioterrorism, kev sau npe yog qhov yuav tsum muaj rau cov chaw uas tsim, ua, ntim, lossis tuav cov khoom noj tib neeg – tsis yog rau lub Hoobkas uas tsuas yog ua cov khoom siv sib cuag nrog zaub mov xwb. Lub Hoobkas uas tsuas yog ua cov ntawv coated feem ntau tsis tas yuav sau npe, txawm tias ntau tus neeg xa khoom hauv Tebchaws Meskas tseem thov nws ua daim ntawv ua haujlwm ntxiv. Qhov no yog daim ntawv teev npe rau cov chaw ua haujlwm, tsis yog daim ntawv pov thawj khoom.
– Kev ceeb toom FCN: ua haujlwm tau los ntawm kev tsis ua dab tsi, tsis yog kev pom zoo ntawm cov khoom tiav tshwj xeeb; cov qauv tsim khoom tseem zais cia thiab FCN tsuas yog siv tau rau tus neeg ceeb toom xwb. Nco ntsoov tias Txoj Kev Zam Txim ntawm Txoj Cai (TOR) – cov tshuaj uas muaj qib kev tsiv teb tsaws chaw tsis pub tshaj 0.5 feem ib billion (ppb) thiab cov uas tsis yog carcinogens yuav tsim nyog rau TOR thiab zam kev FCN tag nrho; tsis tas yuav xa daim ntawv FCN thaum TOR siv.
Yog li cov neeg yuav khoom yuav tsum saib dab tsi? Lub cim tiag tiag yog cov ntaub ntawv ua raws li txoj cai ntawm lub tuam txhab:
1. Cov lus tshaj tawm txog cov tshuaj/cov qauv tshuaj uas lees paub cov khoom xyaw poob rau hauv daim ntawv teev npe zoo 176.110 thiab 177.1520 cov lus qhia.
2. Kev Ua Zoo Hauv Kev Tsim Khoom (GMP) thiab cov pov thawj ntawm lub kaw lus zoo.
3. Daim Ntawv Pov Thawj Tshawb Fawb (COA) ib pawg teev cov qauv, qhov hnyav ntawm PE txheej, dej noo, qhov tawv, thiab lwm yam.
4. Daim ntawv qhia txog kev sim tsiv teb tsaws chaw 176.170 los ntawm lub chaw kuaj mob sab nraud uas tau txais kev pom zoo los ntawm ISO/IEC 17025 (SGS, Intertek, Eurofins, thiab lwm yam).
5. Ib daim ntawv lav ntawm kev ua raws li txoj cai / tsab ntawv ua raws li txoj cai uas hais tias cov khoom ua tau raws li txoj cai.
Daim ntawv qhia txog kev kuaj uas los ntawm lwm tus neeg yog lub hauv paus tseem ceeb uas ua rau koj ua raws li koj tus kheej tau – tab sis nws yog qhov tshwm sim ntawm kev kuaj, tsis yog kev pom zoo los ntawm FDA. Hais tias “ua raws li FDA 21 CFR 176.170,” tsis yog “FDA tau ntawv pov thawj.”
Kev Sib Piv Thoob Plaws Kev Lag Luam: FDA vs EU 10/2011 vs Tuam Tshoj GB 4806
Cov neeg xa khoom tawm feem ntau ntsib ntau yam kev cai. Kev nkag siab txog qhov sib txawv yuav tiv thaiv qhov sib txawv ntawm “ib daim ntawv qhia haum rau txhua tus”.
| Qhov Loj | Tebchaws Meskas FDA (21 CFR) | EU 10/2011 | Tuam Tshoj GB 4806 series |
| Kev xav | Kev cai + daim ntawv teev npe zoo + tag nrho cov cim qhia tau rho tawm | Kev cai tswjfwm + daim ntawv teev npe tso cai + kev tsiv teb tsaws chaw tshwj xeeb | Cov qauv hauv tebchaws uas yuav tsum muaj + cov tshuaj uas raug tso cai + cov kev txwv kev tsiv teb tsaws chaw |
| Kev kuaj xyuas | 176.170 cov tshuaj rho tawm uas yaj tau hauv chloroform (ntawv) | Kev Txwv Kev Tsiv Mus Los Tag Nrho (OML) 10 mg / dm² (yas) | GB 31604 kev sim tsiv teb tsaws chaw |
| Cov ntaub ntawv siv | 21 CFR 176 | (EC) 1935/2004 lub moj khaum + cov ntaub ntawv ntxiv hauv tebchaws | GB 4806.8 (ntawv thiab duab los qhia) |
| Yas/txheej | 21 CFR 177 | EU 10/2011 | GB 4806.7 (yas) |
| Qhov txawv tseem ceeb | “Tag nrho cov organic uas rho tawm tau” ua tus sawv cev rau kev pheej hmoo | “SML + OML” kev tswj hwm meej | Daim Ntawv Teev Npe + kev txwv, sib phim nrog lub teb chaws txoj cai |
Rau cov neeg yuav khoom xa tawm mus rau ntau lub khw, sau cov ntaub ntawv sib phim ua ke: 176.170/177.1520 rau Tebchaws Meskas, (EC) 1935/2004 thiab EU 10/2011 rau EU, thiab GB 4806.7/4806.8 rau Tuam Tshoj. Tsis tas yuav xav tias daim ntawv qhia txog ib lub khw twg yog qhov tseeb.
Txij Li Cov Khoom Siv Raw Mus Rau Cov Yob Uas Tiav Lawm: Yuav Ua Li Cas PE Coated Paper’s Compliance Chain Tau Tsim
Ntawm cov kab ntau lawm, kev ua raws li txoj cai yog ib txoj saw hlau txuas ntxiv mus los ntawm cov khoom siv raw mus rau cov khoom tiav. Rau cov ntawv PE coated, cov khoom rho tawm feem ntau yog los ntawm cov khoom ntxiv uas txhob txwm lossis tsis txhob txwm – tsis yog cov pulp nws tus kheej. Yog li kev ua raws li txoj cai nyob ntawm qhov chaw thiab cov txheej txheem:
– Kev xaiv ntawv hauv paus: nyiam 100% cov ntoo pulp tshiab kom tsis txhob muaj cov khoom tsis paub los ntawm cov rooj tog rov ua dua tshiab; noo noo, tshauv, thiab qhov loj me yuav tsum taug qab tau hauv COA.
– Kev tsim nyog ntawm PE resin: siv cov khoom noj khoom haus LDPE/LLDPE tshiab nrog rau daim ntawv tshaj tawm ua raws li kev sib cuag zaub mov ntawm tus neeg muag khoom (FCA/COA); txheej extrusion tsis ntxiv cov adjuvants uas ua rau muaj kev phom sij, ua kom cov hauv paus extractable qis ntawm qhov chaw.
– Cov txheej txheem txheej extrusion: kev tswj hwm qhov tuab hauv kab thiab kev tshuaj xyuas qhov pinhole PE txheej txuas ntxiv mus (feem ntau 7–45 gsm), xyuas kom tsis muaj qhov pinholes; qhov chaw tsim khoom ua raws li GMP kev xav kom tsis txhob muaj kev sib kis.
– Kev sim cov khoom tiav thiab kev sib xws ntawm cov khoom: kuaj tag nrho 176.170 cov khoom rho tawm hauv ib pawg thiab xa daim COA nrog txhua lub yob, taug qab kev ua raws li cov qauv tsim khoom tshwj xeeb.
Lub ntsiab lus ntawm cov saw hlau no: kev nrhiav khoom huv si + kev txheej txheem txuas ntxiv mus, tuab + kev tswj hwm cov khoom ruaj khov ua rau cov txiaj ntsig ruaj khov hauv ND ntau yam.
Lub Zeem Muag ntawm Tus Neeg Yuav Khoom: Yuav Ua Li Cas Tshuaj Xyuas Cov Neeg Muag Khoom Uas Yog “FDA Ua Raws Li” Tiag Tiag
Tig “FDA ua raws li cov lus hais” mus rau hauv kev nrhiav khoom uas ua tau. Cov neeg ua khob, cov hom lag luam, thiab cov neeg xa khoom tuaj yuav tsum muab cov npe teev hauv qab no tso rau ntawm theem hais nqe:
1. Sau tus qauv ntsuas rau hauv Daim Ntawv Qhia Txog Tus Qauv: “Yuav tsum ua raws li FDA 21 CFR 176.170 chloroform-soluble extractives txwv ntawm 0.5 mg/in² (ib zaug siv thawv ≤1 gallon, ib 176.170(c)) thiab ua tau raws li 177.1520 olefin polymer specifications.”
2. Yuav tsum muaj daim COA (grammage, PE coating height, noo noo, hardness, trim tolerance) thiab daim qauv ntawm daim ntawv qhia 176.170 los ntawm lub chaw kuaj mob ISO/IEC 17025 uas tau txais kev pom zoo nrog txhua qhov kev xa khoom.
3. Xyuas kom tseeb tias cov lus piav qhia piv txwv hauv daim ntawv qhia phim cov SKU xav tau (kev tsim kho, kev sau ntawv, ib/ob PE).
4. Paub meej tias lub chaw kuaj mob tau lees paub thiab txheeb xyuas qhov tseeb ntawm QR code lossis txoj kev txheeb xyuas raug cai ntawm daim ntawv qhia.
5. Yuav tsum tau rov kuaj dua thaum qhov hnyav ntawm PE txheej, qhov chaw ntawm daim ntawv hauv paus, lossis cov qauv hloov pauv, lossis thaum cov khoom kov cov khoom noj uas muaj roj ncaj qha.
6. Sau cov ntaub ntawv ua raws li txoj cai rau hauv cov ntaub ntawv ntawm tus neeg muag khoom thiab txhua pawg khoom cov ntaub ntawv teev cia qhov zoo kom yooj yim nrhiav tau thaum lub sijhawm tshuaj xyuas hom.
Kho ib qho ntawm cov hauv qab no ua cov cim liab: ① tus neeg muag khoom tsis muab daim ntawv qhia txog kev tsiv teb tsaws chaw sab nraud thiab tsuas yog hais lus hais tias “FDA tau ntawv pov thawj”; ② txheej txheem sib cuag zaub mov siv cov pulp rov ua dua tshiab lossis PE rov ua dua tshiab; ③ daim ntawv qhia los ntawm lub chaw kuaj mob uas tsis yog 17025, lossis cov qauv qhia tsis phim SKU tiag tiag. Ib qho cim liab yog qhov laj thawj txaus los tshem tawm tus neeg muag khoom lossis thov kom muaj pov thawj kho.
Cov Lus Dab Neeg thiab Cov Lus Nug Txog Long-Tail
Q1: Puas muaj daim ntawv pov thawj “FDA” tiag?
A: Tsis yog. FDA tsis muab daim ntawv pov thawj ua raws li cov khoom rau cov khoom siv uas kov tau zaub mov. Cov lus tseeb yog “ua raws li FDA 21 CFR XXX,” txhawb nqa los ntawm lub tuam txhab cov lus tshaj tawm tus kheej thiab cov ntawv qhia kev sim.
Q2: Qhov txawv ntawm 21 CFR 176.170 thiab 177.1520 yog dab tsi?
A: 176.170 tswj tag nrho cov organic uas tuaj yeem rho tawm (chloroform-soluble extractives) ntawm cov ntawv tiav lawm thiab cov ntawv paperboard; 177.1520 tswj qhov huv thiab cov lus qhia ntawm PE thiab lwm yam olefin polymer coatings. Daim ntawv PE coated yog composite, yog li ob qho tib si siv tau.
Q3: Yog tias ib yam khoom dhau FDA kev kuaj, nws puas tuaj yeem nkag mus rau hauv Tebchaws Meskas tau yooj yim?
A: Kev ua raws li kev sib cuag nrog zaub mov yog qhov tsim nyog, tsis txaus, rau kev nkag mus rau hauv kev lag luam hauv Tebchaws Meskas. Kev sau npe chaw ua haujlwm, daim ntawv lo, thiab lwm yam cai kuj siv tau; thiab daim ntawv qhia kev xeem suav nrog ib qho qauv tshwj xeeb, tsis yog txhua yam khoom siv tau.