公开(公告)号：US3849224A

公开(公告)日：1974-11-19

申请号：US27383572

申请日：1972-07-21

申请人： WESTVACO CORP

发明人： HINTZ H ,  WEBB J

IPC分类号： B31F1/28 ,  B31F1/22

CPC分类号： B31F1/2804 ,  Y10T156/1021

摘要： A water resistant corrugated paperboard materail is prepared wherein the paperboard components (medium and liner or liners) are each coated on both sides with a thermoplastic film which acts as a water barrier and a water resistant adhesive for bonding the components together. The corrugated medium is also pre-treated with an internal size treatment to prevent edge wicking, and, for the purpose of corrugating the medium without deleteriously affecting the thermoplastic film, the corrugating rolls are preheated to a temperature slightly less than the melting point of the thermoplastic film while a lubricating material is simultaneously applied to either the corrugating rolls or the medium at the corrugating nip.

摘要翻译： 制备防水瓦楞纸板材料，其中纸板部件（介质和衬垫或衬垫）各自用作为防水层的热塑性膜和用于将部件粘合在一起的防水粘合剂两面涂覆。 波纹介质也用内部尺寸处理进行预处理以防止边缘芯吸，并且为了在不影响热塑性膜的情况下使介质波纹化，波纹辊被预热至略低于 同时在波纹辊隙处同时将润滑材料施加到瓦楞辊或介质上。

公开(公告)号：US3762990A

公开(公告)日：1973-10-02

申请号：US3762990D

申请日：1972-01-10

申请人： WESTVACO CORP

发明人： FALKEHAG S ,  BILLS A ,  HINTZ H

IPC分类号： D21C3/06 ,  D21C3/00

CPC分类号： D21C3/06

摘要： A process for increasing the yield of pulp from lignocellulosic material which comprises treating lignocellulosic material with a solution containing cyanide and bisulfite ions. The process may be carried out in several embodiments, one of pulping the lignocellulosic material in the cyanide-bisulfite solution at conventional bisulfite pulping temperatures of about 170*C. Another embodiment is to treat the lignocellulosic material with the cyanide-bisulfite ion solution at a temperature below 130*C., preferably about 95*C., and follow by heating to conventional bisulfite digesting temperatures. Another embodiment of the process of this invention is to treat lignocellulosic material with a cyanide-bisulfite ion solution at a temperature below 130*C., withdraw the cyanide-bisulfite solution and introduce neutral or acid bisulfite digesting liquor and digest as usual. The process of treating lignocellulosic material with the cyanide-bisulfite containing solution is at a pH below 7 and is faster than by treating lignocellulosic material with a solution containing cyanide ions alone. The treatment of lignocellulosic material according to this process results in pulps having increased yield and improved brightness stability over conventional bisulfite cooks.

公开(公告)号：US3769272A

公开(公告)日：1973-10-30

申请号：US3769272D

申请日：1972-05-25

申请人： WESTVACO CORP

发明人： HINTZ H

IPC分类号： C09K8/035 ,  C07G1/00

CPC分类号： C08H6/00 ,  C09K8/035 ,  Y10S516/03

摘要： LIGNIN ADDUCTS COMPRISING THE REACTION PRODUCT OF LIGNIN WITH UP TO 20 MOLES OF 3-CHLORO-2-HYDROXYPROPANE1-SULFONATE PER 1000 GRAMS OF LIGNIN. THESE ADDUCTS ARE WATER SOLUBLE AND ARE USEFUL AS SURFACTANTS, PARTICULARLY DISPERSANTS.