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熔喷布变脆发 hard, 滤差 what to do? 熔喷PP material MFI is 何会变 low?
自 full new 冠疫情爆发以, 据海关 statistics, 3 month 1 day -4 month 25 day full 国共验放 export 口罩211 100 million , 4 month 27 day mono day export 口罩数 amount more is ultra- 10 100 million . market upper in a large amount of N95 grade 别口罩缺口, improves “口罩 core ”熔喷布 quality requirements.
small 编近期打开朋友圈, various inner has, to large 家罗列 several:
small comprehensive 朋友圈, 熔喷布 industry chain 通讯录以 and this 几天 消息, 发现熔喷布 related issues frequency rate relatively high has: 熔喷PP material 放置几天 rear, MFI low; 熔喷 material in 均化烘 dry rear, MFI low; 熔喷布 rigid rigid production also can, is 几天变脆; 熔喷布 add 入驻极 masterbatch rear can to 95%甚至 more high efficiency? 熔喷 material how 选? powder material good also is material good? 熔喷 material how 选? powder material good also is material good? 驻极 how 处理? equipment how 买? 喷 filament 孔堵住 is what causes? what to do? ………… market upper PP熔喷 material more mixed 杂, very more 熔喷布 production rear 像纸一样 hard, is has modified can full 掌握PP degradation process fine 节, very more large Brand production capacity 不足而 in outer 代工, made product stability property. 国家颁布 GB/T 30923-2014 polypropylene (PP) （PP）熔喷 specialized material standards, for/regarding melt flow index, ash content, volatile content, oxidation material 残留以 and molecular weight distribution 都 to specific amount scope/range, for/regarding has requirements PP熔喷 material more is need combined standards.
that 么, need production 出95 grade above 熔喷布, 你首先搞清楚PP熔喷 material Common issues causes can more good, more fast and adjustment. below/following is small is large 家罗列 Common difficult and causes analysis, more is industry experience separation 享, large as 参考.
熔喷PP material MFI low causes analysis 1, 熔喷PP material 放置几天 rear, MFI is what low?
当天 pelletizing rear, MFI is in 230℃ testing, oxidation material 残留会导致PP继续 degradation, MFI increase, this 样就算 is 1200 MFI, in testing can can to 1800. meanwhile, more, formed bubbles, bubbles flow fast material, therefore 体积发测出 数 value high. and other to to 客户手 upper, oxidation material less, MFI 变化就不 large, also to 1200, therefore is reduce to 1200, is to 1200.
2, 熔喷PP material in 均化烘 dry rear, MFI is what low?
同 oxidation material separation understanding material 一样, water separation in 也会导致体积 method testing 熔指偏 high. water separation less, or dry, 熔指就会变 low.
当然, has industry 网友反映: melt 指体积 method has gas is 测不准, its 结果也不应 using/adopting. although in methods formed gas 不畅, testing value 不稳, its is in 熔指仪 testing 30 mm 段位置不 for formed. adjustment device upper lower for pressure material upper lower degree 线, testing this 30 mm 段 material material 体积.
3, 熔喷PP material and polymer crosslinked rear, MFI is what low?
熔喷PP material add 入 copolymer PP or elastomer 进行 toughened . its oxidation material in homopolymer PP extrusion process in is make PP degradation, is other polymer, 如 polyethylene (PE) , also has 橡胶 type material, to function is crosslinked, crosslinked 结果就 is MFI true reduce. if 熔喷PP material crosslinked rear MFI low, this again 继续做熔喷布, also easy 堵模头.
熔喷布 rigid rigid production also can, rear is 何变脆发 hard? 1, 喷 filament non-uniform, cold machine amount 不足, formed dispersion hot non-uniform, generate internal stress 导致发脆. can through adjustment extrusion machine melt amount, adjustment hot machine temperature degree, increase large cold machine amount improvement. 2, from raw materials analysis, can can is use low MFI filament, filament comparison coarse. 24 small 时至48 small 时完 full crystallization rear, 就会导致熔喷布变脆发 hard. molecular weight distribution non-uniform, therefore need selection molecular weight distribution in polypropylene (PP) material, can reduce 喷出 熔喷布发脆 风险, MFI 1500熔喷 material 喷 filament fine, soft/flexible, distribution 均匀, 则熔喷布 soft/flexible property relatively good. 3, and raw materials and processing temperature degree high has 关系. fiber production 出 以 rear, PP internal has 二次 crystallization heavy new process, in screw internal heavy hot, already 经导致严 heavy thermal degradation . material oxidation material process agent if control good, very easy 出现此 type issues. oxidation material process most important is how to in screw extrusion front formed separation 子链断链 in 止, anti 止二次残留进入 to 无纺布 screw reaction, this very screw equipment combined and formulation control. 4, 二次 separation understanding make 熔喷布变 hard, 变脆. 5, 驻极 equipment and 驻极效果不理想也 can can 会导致熔喷布变脆. 6, rigid production 出 熔喷布 also has temperature degree, especially is large 滚筒收 material machine 械, can can machine has, rear 熔喷布 temperature degree high. plastics in high temperature ring lower soft/flexible property tough property large, cooling rear 就会变脆. comprehensive above inner 容, production 出 熔喷布变脆发 hard is raw materials, process, additives, equipment and other comprehensive factors effect/influence, therefore large 家一定 full 程 关, need positive 规 材 material and equipment, control process parameters, decrease/reduce this type of phenomenon 发生. 熔喷布 add 入驻极 masterbatch rear can to 95%甚至 more high efficiency?
一款 good high quality 熔喷布, and 材 material, process, electrical pressure and other and other has 关系, masterbatch most large 功效就 is 帮助我们达 to N95 standards this type of 熔喷布储存 electrical 荷, long it has 效期! to 熔喷布 做驻极处理, versus 当于我们 to 熔喷布 in electrical, more more electrical 荷. masterbatch is 我们熔喷布 蓄 battery!
is 此, small also 特意打 electrical inquiry masterbatch engineering 师, engineering 师反映, 客户反映 熔喷布达不 to 95% 滤 efficiency, 熔喷布发 hard and other phenomenon is 各 方面 comprehensive effect/influence.
about/regarding 熔喷布达不 to 95% 滤 efficiency factors and raw materials, additives, process, equipment, formulation …… according to engineering small inner 容, main/primary to large 家罗列 below/following 几点:
■熔喷布 滤 efficiency 跟做熔喷布 equipment has very large 关系, generally 说, large company equipment mold precision degree comparison high, process control good, its 塑化效果 good. very more small enterprise equipment precision degree can can to related requirements, more 会出现 滤 efficiency 不达标甚至熔喷布变脆 phenomenon; ■ its 次驻极 masterbatch types type （ has machine, machine ）, masterbatch add amount, masterbatch dispersion and 驻极效果 and other effect/influence 熔喷布 滤效果; ■ remove equipment, process, masterbatch and other factors effect/influence, 熔喷布 formulation design and Raw Materials selection 都会 effect/influence 滤效果. ■ melt flow index unstable, formed filament non-uniform, easy 出现 滤 efficiency 不达标, phenomenon.
therefore, very more enterprise is 转产就 can production combined 格 口罩, small small 口罩, large 呢, technology standards is non hard 核, need production combined standards 口罩, step/link 一 都不 can 松懈.
当然也 has enterprise 赚翻
熔喷 material how 选? powder material good also is material good? ●粒 material time long, powder material degradation fast , especially is hot 时候; ● powder material and degradation agent mixed combined more uniform , 接触面 large, more has advantages; ●基 material MFI small, more add 点 degradation agent , MFI large, less add 点; ● selection molecular weight distribution in polypropylene (PP) material; ●想办 method remove 基 material unstable belt/tape effect/influence, is key/critical technology. 实际 production in, selection MFI large polypropylene (PP) also is small 呢? ●MFI small : can production strong/high force relatively high non 织造布. ●MFI large : output/production volume high, can consumption low. therefore currently trend is using/adopting relatively high MFI raw materials. ●熔喷 grade polypropylene (PP) PP pellets material : MFI>1500.
也就说, if 你发现 production 出 熔喷布“太脆”, Raw Materials melt flow index 情况. specific how this parameters, that need is from 哪 方买 raw materials 说.
驻极 how 处理? equipment how 买? ◆驻极 time, electrical pressure and 驻极距离 is effect/influence 驻极效果 important process parameters, 随 驻极 time increase, and other electrical density increase large, 驻极体 surface electrical rise high, make 驻极体 吸附 and function reinforcement, 但随 驻极 time again increase, material surface electrical 位足够 high 时, lower electrical will by toward other electrical density relatively small 方移动. 当驻极结束时, its electrical density to saturated and 状态, therefore time again growth 时, material efficiency obvious 变化. ◆驻极 equipment need positive electrical, need negative electrical . is upper is positive electrical 荷, can 吸附空 gas in negative electrical 荷. 熔喷布 and 皮肤接触, negative electrical more easy by consumption, if belt/tape positive electrical loss consumption slow 一. ◆空 gas in powder 尘, fine 菌, 病毒依附 in pellets material upper, belt/tape negative electrical is 主, 熔喷布 belt/tape positive electrical, easy this belt/tape negative electrical pellets material. ◆驻极 masterbatch increase electrical can force large, main/primary is electrical 荷, let decrease slow 一. 喷 filament 孔堵住 is what causes? what to do? 喷 filament 堵模口 is 熔喷产线 most Common issues 之一, filament 堵模口 causes has lower 几点:
●材 material ash content large, has 杂质;
●喷 filament 孔不够 light slip; ●材 material unstable; ●没 has add device; ● material has dry 净. large 家应该都感觉 to, 疫情爆发 rear, polypropylene (PP) specialized material 如同坐 upper 火箭. however, 近期随 越 越 more production capacity 释放, market supply and demand landscape positive in 发生转变. future material also good 卖吗? 咱们一起 看看!
more enterprise 角逐熔喷 material market
PP熔喷 material production process/workflow, is 以PP specialized resin is material, generally is powder 状, melt flow index 30~40, through di screw mixed extrusion machine, combined formed formulation and process, using/adopting polymer can 控流变 technology, processing production formed is PP熔喷 material.
口罩 upper production raw materials 示意图
图源: 隆众资讯
new 冠肺炎疫情爆发 front, PP熔喷 material belongs to small product, market small, profit rate low, full production capacity 约8 10,000 tons / year , 约260吨/天. 疫情爆发 rear, 因口罩 demand 井喷, use polypropylene (PP) specialized material demand in short inner increase, is fast meet/satisfy 疫情期间 market demand, more enterprise newly built, increase 产熔喷 material production 线, inner material production capacity speed rise.
currently 每天接近5000吨, growth 近20倍.
increase large separation is type:
● 原 has production enterprise increase production expand large production amount;
● large in type modified plastics 厂原不 production material, will has modified plastics production equipment renovation is PP熔喷 material production equipment 转产; ●国家 from strategy degree 考虑, in lower certain production 厂也投入 to PP熔喷 material production and sales in, make PP熔喷 material modified pelletizing output/production volume 每天都 in upper rise. ◆燕山石化 英利士20 10,000 tons / year polypropylene (PP) plant/unit, production capacity separation rear, future or will to 千吨/天规模, will 平稳现 in 火爆 熔喷 material market. ◆道恩 corporation 母 company material day output/production volume already 达460吨, company large 韩道恩 day output/production volume already to 70吨. 控股子 company new day output/production volume already to 20吨. group positive in 规划熔喷布 production 线. 4 month 27 day 消息, corporation new increase polypropylene (PP) material 700吨/天, formed rear company production capacity expected to 1200吨/天. ◆国恩 corporation already has 20 strip/profile material production in 产. currently material market demand 旺盛, product 供不应求, company in new increase 8 strip/profile production 线基础 upper also increase 订5 strip/profile new production 线, will 于4 month 19 day 开始陆续 to 厂, expected 于5 month in full 部安装 debugging 完毕, new production day production capacity strip/profile in 12吨/天 left right, company has 33 strip/profile production 线 can production material. ◆ Pret 熔喷 material day output/production volume 约400吨, its USA company day output/production volume can to 20吨. ◆ Genius 熔喷 material day output/production volume 约120吨, future day 产200吨. 南京 poly 隆 has 3 strip/profile PP熔喷 material production 线, day production capacity 约70吨. ◆宝丰 can 源开建7 strip/profile material production 线, 5 month in day 产达80吨. ◆平煤 Shenma 7 strip/profile material production 线4 month 10 day amount 产, in outer meanwhile, can has force group 熔喷布 project stability production. …… 另 has enterprise positive in accelerated 入场口罩 related enterprise degree 赚翻
疫情之 lower, anti material especially is 口罩, 红 “炸子鸡”. related enterprise degree 赚翻! 咱们一起 看看!
口罩 enterprise profit table/sheet
一季 degree enterprise profit | |
enterprise 名称 |
净 profit |
天华 ultra- 净 |
4753 10,000 yuan |
cationic medical |
1097 10,000 yuan |
奥美 medical |
9199 10,000 yuan |
延江 corporation |
3889 10,000 yuan |
欣龙控股 |
5825 10,000 yuan |
道恩 corporation |
6939 10,000 yuan |
拓斯达 |
1.54 100 million yuan |
昊志 machine electrical |
1404 10,000 yuan |
赢 combined 科技 |
1.53 100 million yuan |
long corporation |
1059 10,000 yuan |
