面巾纸的生产工艺(中英文)

面巾纸的生产工艺3.1原料进口漂白针叶木浆，白度89%，纤维平均长度1.80mm，打浆度16.5°SR，湿重18g。3.2工艺流程漂白浆→碎浆机→双圆盘磨浆机→原浆仓→配浆仓→调浆箱→混合池→高位箱→锥形除渣器→稳浆箱→网槽→干燥→卷取3.3打浆工艺打浆浓度4.0%-4.5%，电流120-160A，打浆度45-48°SR，湿重6-9g。3.4抄纸工艺纸机抄宽1575mm，车速80-100m/min。助剂的加人：湿强剂WA0.05%-0.1%（对绝干浆）调浆箱内加人，分散剂PEO0.05%-0.10％高位箱内加入，黏度2.06mPa•s，扭矩51.5%(0#转子，150rpm，温度25．5℃）。3.5分散剂的溶解按0.03％的溶解浓度计算，称取4kg分散剂平均放入2个料斗内。首先在溶解槽内加水至第一组叶翅，开动搅拌器，搅拌速度为40r/min，开始加分散剂。料斗内的分散剂经气流吹散，均匀地落在水膜上，进人到溶解槽内，整个加料过程不得少于40min，补加水到规定液位，再继续搅拌40min（气温低时在生产允许条件下，应尽可能延长搅拌时间或提高溶解水温度在50℃左右），制备完毕。经60目筛网导入分散剂贮存槽内备用。溶解时，将分散剂均匀地分散在水中的操作极其重要，应尽量使分散剂颗粒在进人溶解槽之前被水包覆，否则容易导致分散剂结块，溶液中产生果冻状难溶物。在搅拌和加人的过程中应尽可能地避免受过分的剪切。搅拌后，时间充足情况下，可适当延长静止存放时间，使溶液有足够的时间熟化，使分散剂的溶解更加充分。溶解后的PEO要及时使用，存放时间不宜超过48h，溶解浓度越低，存放时PEO降解越快，一般12h用完效果最佳。分散剂溶液在制备和输送过程中很容易吸附水中的微小杂质形成“黏状脏料”附着在制备槽、输送管道的内壁，如果这些脏料进入上浆系统，会影响成纸质量和纸机的正常抄造。因此很有必要进行过滤、清洗、杀菌工作。PEO是一种有机高分子量聚合物，从某种意义上说，它也是细菌、微生物的营养物质，尤其是在高温季节，有必要在系统中加入一定量的杀菌剂。Productionprocessoftissuepaper3.1rawmaterialsimportedconiferouswoodpulpbleaching,whitedegreeis89%,theaveragefiberlength180mm,beatingdegree16.5°SR,wetweightof18G.3.2Theprocessofbleachingpulp,pulpmachine,doublediscrefiner,pureebin,slurrybin,mixingtank,mixingtank,hightankandthecentricleaner,stableslurrytankandthenetgroove,dryingandcoiling.3.3refiningprocessofbeatingconcentration4.0%-4.5%,current120-160A,beatingdegreeof45-48°SR,wetweightof6-9g.3.4papermakingtechnologyofpapermachinecopywidth1575mm,speed80-100m/min.Additivesadded:wetstrengthagentWA0.05%-0.1%(absolutedrypulp)intothemixingtank,dispersingagentPEO0.5%-0.10%highviscosityisadded,2.06mPa•s,torqueof51.5%(0#rotor,150rpm,temperature25.5℃).3.5dispersingagentdissolvedindissolvedconcentrations0.03%computation,weigh4kgdispersingagentevenlyinto2hopper.Firstinthedissolvingtankwithwatertothefirstgroupofleafwing,startthemixer,stirringspeedis40r/min,startaddingdispersant.Thehopperdispersantbyairblown,uniformlyfallsinthewaterfilm,intodissolvedgroove,thewholefeedingprocessshallnotbelessthan40min,addwatertothespecifiedlevel,continuestirring40min(whenthetemperatureislowintheproductionpermitconditions,asfaraspossibletoprolongmixingtimeorhighdissolvedwatertemperatureatabout50℃),preparation.Through60meshsieveintothedispersingagentstoragetankreserve.Whendissolved,dispersingagentdispersedevenlyisextremelyimportantinthewateroftheoperation,youshouldtrytomakethedispersantparticlesbeforeenteringthebathwatercoating,otherwiseeasilyleadtodispersercaking,producejellylikeinsolublesubstanceinsolution.Intheprocessofmixingandpeopleshouldbeasmuchaspossibletoavoidexcessiveshear.Aftermixing,timeenough,itmaybeappropriatetoextendthestaticstoragetime,thesolutionhasmoretimetoripen,dissolvingdispersingagentmorefully.AfterthedissolutionofPEOuseintime,storagetimeshouldnotexceed48h,thedissolvedconcentrationislower,whenstoringPEOdegradationmorequickly,thegeneral12hrunoutthebest.Dispersantsolutiontoformastickydirtymaterialattachedtothepreparationofinnergroove,pipelineinthetinyimpuritiespreparationandiseasilyadsorbedwaterintheprocessofconveying,ifthesedirtymaterialintothesizingsystem,willaffectthenormalproductionofpaperqualityandthepapermachine.Itisnecessarytocarryoutthefiltering,cleaning,sterilizationwork.PEOisakindoforganichighmolecularpolymer,inasense,itisthenutrientsofbacteria,microorganism,especiallyinhightemperatureseason,bactericideisnecessarytoaddacertainamountinthesystem.