Nkag siab txhuas ntawv foil "Pinhole" cov qauv hauv cov khoom noj ntim khoom thiab yog vim li cas thiaj muaj kev nyab xeeb ntau

Aluminium ntawv nyiaj yog ib qho ntawm cov khoom siv uas tseem ceeb tshaj plaws hauv cov khoom noj khoom haus niaj hnub no. Nws tshwj xeeb tiv thaiv kom ya raws, oxygen, Aroma Hloov, thiab lub teeb ua rau nws tsis tseem ceeb rau kas fes capsules, Saj zawg zog pouches, Ntim mis nyuj, retort hnab, thiab Peypaceutical brister ntawv nyiaj. Txawm li cas los, qhov kev ua tau zoo ntawm aluminium ntawv ci yog nyob ntawm ib qho tseem ceeb ntawm qhov zoo: pinhole suav.

Cov aluminium foil pinhole txheem plays lub luag hauj lwm txiav txim siab nyob rau hauv kev ntsuam xyuas seb ib daim ntawv puas haum rau kev sib cuag cov zaub mov ncaj qha thiab khaws cia mus ntev. Txawm tias microscopic pinholes - feem ntau pom tsis pom ntawm qhov muag liab qab - tuaj yeem ua rau tsis muaj zog tiv thaiv kev tiv thaiv., accelerating zaub mov oxidation thiab txo cov khoom txee lub neej. Kab lus no piav qhia txog cov cim tseem ceeb uas siv thoob ntiaj teb los ntsuas cov pinholes hauv aluminium ntawv ci thiab qhia meej tias vim li cas qis pinhole ntom yog qhov tseem ceeb rau kev ntim khoom zoo thiab txhim khu kev qha.

Qhov taw qhia tseem ceeb ntawm Aluminium Foil Pinhole Standard

Ntiaj teb no ntim kev lag luam (zaub mov, chaw ua tshuaj paus, thiab huv si) soj ntsuam aluminium foil pinholes raws li ntau qhov ntsuas tau. Cov cim tseem ceeb tshaj plaws suav nrog:

1. Pinhole suav ib square Meter

Qhov no yog qhov taw qhia tseem ceeb rau feem ntau cov qauv thoob ntiaj teb.
Cov neeg tsim khoom suav cov naj npawb ntawm qhov hauv ib cheeb tsam (feem ntau 1 m² os) nyob rau hauv kev tswj teeb pom kev zoo thiab magnification.

Cov qauv kev lag luam raug suav nrog:

• ≤ 200 Pinholes / M² rau 7-9 μm zaub mov qib ntawv ci
• ≤ 50 Pinholes / M² rau 10-12 μm hwm zaub mov ntim ntawv ci
• ≤ 5 Pinholes / M² rau kws tshuaj blister foil (8011, 8021, 8079)

Lub thinner ntawv ci, qhov nyuaj ntawm lub cev yog kom tsis txhob pinholes, uas yog vim li cas ultra-nyias foils (6- 7 m os) raug soj ntsuam siv ntau qhov kam rau ua.

2. Qhov siab tshaj plaws tso cai Pinhole Diameter

Pinhole qhov loj yog qhov tseem ceeb raws li qhov ntau.
Hom kev faib tawm suav nrog:

• Micro pinholes: < 0.1 mm
• Me pinholes: 0.1-0.3 hli
• Loj pinholes: > 0.3 mm (feem ntau tsis tsim nyog rau kev ntim khoom noj)

Feem ntau cov qauv ntim zaub mov xav tau tsis muaj pinholes loj dua 0.3 mm, Raws li cov no tuaj yeem cuam tshuam kev sib khi kev ncaj ncees txawm tias tom qab lamination.

3. Distribution Uniformity tsis zoo

Txawm tias tag nrho cov pinhole suav yog nyob rau hauv specification, pawg tuaj yeem tsim cov cheeb tsam tsis muaj zog. Yog li ntawd, uniformity yog ntsuas los ntawm kev faib cov ntawv ci rau hauv ntau daim phiaj thiab ntsuas qhov tsis xws luag hauv zos concentration.

Ib qho kev xav tau:

• Tsis muaj ib leeg 100 cm² yuav tsum tshaj 20-30% ntawm tag nrho cov tso cai pinhole suav.

4. Kev Ntsuas Hluav Taws Xob

Ib qho kev siv tshuaj ntsuam xyuas qhov muag pom tau siv los txheeb xyuas cov pinholes me me (< 0.01 mm) qhov kev tshuaj xyuas phau ntawv no tsis tuaj yeem ntes tau.

Regulators thiab high-end manufacturers nce cia siab rau automated vision systems, qhov twg cov ntawv ci yog scanned ntawm speeds tshaj 200 m / kuv.

5. Roj-Stain thiab Rolling-Defect Correlation

Roj residues, yob khawb, hmoov av, thiab cov khib nyiab hlau thaum dov tuaj yeem ua rau lossis loj pinholes. Qee cov qauv sib txuas cov kab mob sib kis nrog kev kwv yees pinhole ceev.

Cov chav kawm kis kab mob muaj xws li:

• Qhov siab tshaj plaws qhov ntom ntom ≤ 3 chaw / m²
• Tsis tas li khawb tob dua 2 μm

Hom kev sib raug zoo no ua kom muaj kev pheej hmoo ntawm pinhole tswj ntawm lub hauv paus.

Yog vim li cas tsawg Pinhole Defects kom ntseeg tau tias zoo dua ntim zaub mov

1. Txhim kho Oxygen thiab Dej Vapor Barrier Performance

Aluminium ntawv ci yog unmatched nyob rau hauv barrier zog tsuas yog thaum nws yog kiag li lawm.
Txhua tus pinhole tsim ib txoj hauv kev ncaj qha rau oxygen thiab ya raws, ho txo ​​lub neej txee rau:

• Txiv ntseej
• Kas fes
• Cov mis nyuj hmoov
• Khoom noj khoom haus
• Lub tshuab nqus tsev ntim khoom noj
• Kua seasonings

Khoom noj khoom haus oxidation nce sai heev thaum txawm tias muaj cov kab mob microscopic.

2. Zoo dua Aroma Retention thiab Flavour Stability

Cov txuj lom, tshuaj yej, thiab kas fes yog rhiab heev rau aroma poob.
Pinhole-induced micro-permeation tuaj yeem ua rau:

• Flavor degradation
• Volatile roj evaporation
• "Stale" los yog rancid tsw nyob rau hauv kas fes thiab roasted noob

Tsawg pinholes = muaj zog aroma tuav.

3. Txhim khu kev tiv thaiv kab mob thiab tshuaj lom neeg

Txawm hais tias cov kab mob tsis tuaj yeem dhau los ntawm cov ntawv ci yooj yim, pinholes tuaj yeem tso cai:

• Microscopic airborne contaminants
• Pwm spores
• Tshuaj vapors
• Packing-line humidity ingress

Qhov no yog tshwj xeeb tshaj yog tseem ceeb nyob rau hauv multilayer laminates siv rau retort thiab aseptic ntim.

4. Zoo dua lamination Bonding thiab cov qauv muaj zog

Thaum muaj pinholes, nplaum nplaum thaum lub sij hawm lamination ua tsis ncaj, tsim kom muaj kev sib txuas tsis muaj zog. Dhau sijhawm, cov no tuaj yeem txhim kho mus rau hauv:

• Delamination
• Ua npuas ncauj
• Ntawv ci tawg nyob rau hauv tshav kub sealing

Tsawg pinhole ntom ntom ua kom muaj kev ruaj ntseg mus ntev.

5. Txhim kho qhov tshwm sim thiab hom kev xav

Khoom noj khoom haus hwm hom xav tau ntim khoom uas qhia txog qhov zoo. High pinhole ntom feem ntau correlates nrog pom defects xws li:

• Rolling kab
• Khawb
• Me ntug kab nrib pleb
• Tsis sib xws brightness

Tsawg dua pinholes feem ntau qhia tau zoo dua upstream dov thiab casting tswj, txhawb cov neeg tsim khoom lub koob npe nrov.

Kev lag luam cov ntaub ntawv siv los ua kom tau qis Pinholes

Qee cov alloys thiab cov txheej txheem ua tau zoo dua thaum cov qib pinhole qis heev:

Tsim nyog annealing, kev lim, thiab ntau theem dov yog qhov tseem ceeb los ua kom cov ntawv ci ruaj khov thiab txo qhov tsis xws luag.