中华纸业
中華紙業
중화지업
CHINA PULP & PAPER INDUSTRY
2015年
18期
70-73
,共4页
低温浸渍%双气液相蒸煮器%抗张指数%浆板密度%H因子
低溫浸漬%雙氣液相蒸煮器%抗張指數%漿闆密度%H因子
저온침지%쌍기액상증자기%항장지수%장판밀도%H인자
low-temperature impregnation%a two-vessel steam/liquor phase digester system%tensile energy absorption index%pulp sheet density
作为瓦楞纸板的底层和顶层材质,牛皮卡纸在美国及其他世界各地是主要纸产品之一,并且是一个在制浆造纸领域有着发展前景的产品。然而,多年来,牛皮卡纸的制浆技术发展有限,这是由于大多数国家瓦楞纸板的标准有定量要求而没有强度要求。随着222/41规则的出台,在美国这种只看定量不关注强度的情况有所改善。近来,人们研发了一项新的制浆技术,采用该新蒸煮技术蒸煮针叶木能在较高的硬度下蒸煮成浆,并且使纤维得到很好的分离,浆渣率也低。将采用新蒸煮技术与传统蒸煮技术蒸煮的牛皮卡纸用浆以卡伯值进行对比,以比较两种蒸煮浆的蒸煮质量。研究中发现,两种蒸煮浆最大的不同是,采用新蒸煮工艺,其H因子要求低和蒸后浆强度增加,这两项指标通常用来衡量浆的抗张吸收能量,新蒸煮技术要求相对低的H因子和蒸后浆强度增加,这有利于牛皮卡纸用纸浆制浆技术的发展。
作為瓦楞紙闆的底層和頂層材質,牛皮卡紙在美國及其他世界各地是主要紙產品之一,併且是一箇在製漿造紙領域有著髮展前景的產品。然而,多年來,牛皮卡紙的製漿技術髮展有限,這是由于大多數國傢瓦楞紙闆的標準有定量要求而沒有彊度要求。隨著222/41規則的齣檯,在美國這種隻看定量不關註彊度的情況有所改善。近來,人們研髮瞭一項新的製漿技術,採用該新蒸煮技術蒸煮針葉木能在較高的硬度下蒸煮成漿,併且使纖維得到很好的分離,漿渣率也低。將採用新蒸煮技術與傳統蒸煮技術蒸煮的牛皮卡紙用漿以卡伯值進行對比,以比較兩種蒸煮漿的蒸煮質量。研究中髮現,兩種蒸煮漿最大的不同是,採用新蒸煮工藝,其H因子要求低和蒸後漿彊度增加,這兩項指標通常用來衡量漿的抗張吸收能量,新蒸煮技術要求相對低的H因子和蒸後漿彊度增加,這有利于牛皮卡紙用紙漿製漿技術的髮展。
작위와릉지판적저층화정층재질,우피잡지재미국급기타세계각지시주요지산품지일,병차시일개재제장조지영역유착발전전경적산품。연이,다년래,우피잡지적제장기술발전유한,저시유우대다수국가와릉지판적표준유정량요구이몰유강도요구。수착222/41규칙적출태,재미국저충지간정량불관주강도적정황유소개선。근래,인문연발료일항신적제장기술,채용해신증자기술증자침협목능재교고적경도하증자성장,병차사섬유득도흔호적분리,장사솔야저。장채용신증자기술여전통증자기술증자적우피잡지용장이잡백치진행대비,이비교량충증자장적증자질량。연구중발현,량충증자장최대적불동시,채용신증자공예,기H인자요구저화증후장강도증가,저량항지표통상용래형량장적항장흡수능량,신증자기술요구상대저적H인자화증후장강도증가,저유리우우피잡지용지장제장기술적발전。
Kraft liner, used as the top and bottom layers in corrugated board, is one of the major paper products in the United States and worldwide and is a long-term growth business area for the pulp and paper industry. However, for many years pulping development for kraft liner has been limited. The lack of development may be because corrugated board standards in many countries have specified basis weight and not strength demands on the corrugated board. With the modiifcations of Item 222/Rule 41, the situation in the United States has changed. Recently, a new cooking technology has been developed enabling deifbration of softwood pulps at considerably higher kappa number with low reject content. Pulp quality as a function of kappa number has been evaluated for this new cooking technology compared to pulp produced using a conventional kraft liner cooking technology. Lower H-factor demands and increased strength, measured as tensile energy absorption, were the most important differences found between the two cooking systems in this study. A new cooking technology may contribute to development of pulping for kraft liner.