公开(公告)号：WO1984002093A1

公开(公告)日：1984-06-07

申请号：PCT/US1982001632

申请日：1982-11-19

Applicant: WEYERHAEUSER COMPANY

Inventor： WEYERHAEUSER COMPANY ,  BROWN, Robert, A.

IPC: B07B09/00

CPC classification number: B07B9/00 ,  D21B1/023

Abstract: A chip screening system has a primary screening station (22) for dividing an incoming flow (10) of chips into a first acceptable fraction (28) and a second fraction (30) having acceptable chips and also both oversized and overthick chips. The second fraction is directed to a second screening station (50) where the incoming flow will again be fractionated into an acceptable flow (56) being screened primarily according to thickness and a second fraction (60) being composed of oversized and overthick chips. The second fraction is then directed to a size reducing station (66).

Abstract translation: 芯片筛选系统具有用于将进入的芯片流（10）分成第一可接受部分（28）和具有可接受的芯片的第二分数（30）的初级筛选站，以及超大和超厚度的芯片。 第二部分被引导到第二筛选站（50），其中进入的流动将再次分级成主要根据厚度进行筛选的可接受的流（56），并且第二部分（60）由超大和过厚的碎片组成。 然后将第二部分导向尺寸减小台（66）。

公开(公告)号：WO1983001263A1

公开(公告)日：1983-04-14

申请号：PCT/US1981001333

申请日：1981-10-05

Applicant: WEYERHAEUSER COMPANY

Inventor： WEYERHAEUSER COMPANY ,  LEE, Peter, F.

IPC: D21C09/06

CPC classification number: D21C9/02

Abstract: Improved displacement washing process for recovering processing chemicals from a porous medium, particularly wood pulp. The effective mobility of a displacing solution, typically a more dilute solution of the chemical sought to be recovered, is reduced such that it is less than the mobility of the solution to be recovered. In a pulp mill washing system, consumption of wash water may be reduced 0.6 tons of water per ton of pulp produced without reducing chemical recovery. Conversely, chemical effluent from the washer could be reduced by 50% without increasing wash water requirement. Mobility is proportional to the permeability of the porous medium with respect to the solution of interest and inversely proportional to the viscosity of that solution. Mobility of the wash solution relative to the solution to be displaced is preferrably reduced by the addition of a soluble, high molecular weight polymer, greater than 10 , until the ratio of the mobility of the wash solution to that of the chemical rich solution is in the range of 0.05-2.0, preferably within the range 0.2-1. As examples, copolymers of acrylamide and acrylic acid, carboxypolymethylene, polyacrylic acid and deacetylated chitin have been found to be effective in reducing mobility. The presence of 6-10 ppm of a copolymer of acrylamide and acrylic acid of MW greater than 10 in the wash solution of a brownstock washer can double the efficiency of the washer.

Abstract translation: 用于从多孔介质，特别是木浆中回收处理化学品的改进的置换清洗方法。 替代溶液（通常是寻求回收的化学品的更稀溶液）的有效迁移率被降低，使得其低于待回收溶液的迁移率。 在纸浆清洗系统中，洗涤水的消耗量可以减少每吨纸浆0.6吨的水，而不会减少化学品的回收。 相反，来自洗衣机的化学品流出物可以减少50％，而不增加洗涤水需求。 流动性与多孔介质相对于目标溶液的渗透性成比例，并与该溶液的粘度成反比。 通过添加大于10 6的可溶性高分子量聚合物，洗涤溶液相对于被置换的溶液的流动性优选地降低，直到洗涤液的迁移率与富含化学物质的比例 溶液在0.05-2.0的范围内，优选在0.2-1的范围内。 作为实例，已经发现丙烯酰胺和丙烯酸，羧基聚亚甲基，聚丙烯酸和脱乙酰化几丁质的共聚物在降低迁移率方面是有效的。 在布朗斯克洗涤剂的洗涤溶液中存在6-10ppm丙烯酰胺和MW大于10 6的丙烯酸的共聚物可以使洗衣机的效率提高一倍。

公开(公告)号：WO1998027262A1

公开(公告)日：1998-06-25

申请号：PCT/US1997022813

申请日：1997-12-11

Applicant: WEYERHAEUSER COMPANY

Inventor： WEYERHAEUSER COMPANY ,  WESTLAND, John, A.

IPC: D06M13/432

CPC classification number: D06M13/192 ,  D06M13/432 ,  D06M15/263 ,  D06M2101/06 ,  D21C9/005 ,  D21H11/20 ,  Y10T428/2907 ,  Y10T428/2915 ,  Y10T428/292 ,  Y10T442/2369 ,  Y10T442/2377 ,  Y10T442/2393

Abstract: Cross-linked cellulose fibers having free pendant carboxylic acid groups are disclosed. The fibers include a polycarboxylic acid covalently coupled to the fibers, and are cross-linked with a cross-linking agent having a cure temperature lower than the cure temperature of the polycarboxylic acid. Methods for producing the fibers and for producing a fibrous sheet incorporating the fibers are also disclosed.

Abstract translation: 公开了具有游离侧羧酸基团的交联纤维素纤维。 纤维包括与纤维共价偶联的多元羧酸，并且与具有低于多元羧酸的固化温度的固化温度的交联剂交联。 还公开了生产纤维和用于生产包含纤维的纤维片材的方法。

公开(公告)号：WO1998024392A1

公开(公告)日：1998-06-11

申请号：PCT/US1997022341

申请日：1997-12-05

Applicant: WEYERHAEUSER COMPANY ,  GRAEF, Peter, A. ,  ELSTON, Colin ,  BUNKER, Daniel, T. ,  HOWARD, Fred, B. ,  MATHEWS, Jeffrey, D. ,  NAIENI, Shahrokh, A.

Inventor： WEYERHAEUSER COMPANY

IPC: A61F13/15

CPC classification number: A61F13/53 ,  A61F13/531 ,  A61F13/534 ,  A61F13/53747 ,  A61F2013/15406 ,  A61F2013/15422 ,  A61F2013/15447 ,  A61F2013/530051 ,  B32B5/18 ,  B32B27/04 ,  D04H1/54 ,  D04H1/60 ,  D04H1/732 ,  D21F11/04 ,  D21F11/14 ,  D21H11/20 ,  D21H13/08 ,  D21H13/14 ,  D21H13/24 ,  D21H13/26 ,  D21H15/10

Abstract: A unitary absorbent layer composed of cross-linked cellulosic fibers and a binder is disclosed. In a preferred embodiment, the binder is a bicomponent binding fiber. In combination with one or more other layers in an absorbent article, the unitary absorbent layer can rapidly acquire, distribute, temporarily store, and then release the acquired liquid to other liquid retention layers. Methods for forming the unitary absorbent layer are also disclosed.

Abstract translation: 公开了由交联纤维素纤维和粘合剂组成的单一吸收层。 在优选的实施方案中，粘合剂是双组分结合纤维。 与吸收制品中的一个或多个其它层组合，整体吸收层可以快速获取，分配，临时储存，然后将获取的液体释放到其它液体保留层。 还公开了形成单一吸收层的方法。

公开(公告)号：WO1997016595A1

公开(公告)日：1997-05-09

申请号：PCT/US1996017502

申请日：1996-10-29

Applicant: WEYERHAEUSER COMPANY

Inventor： WEYERHAEUSER COMPANY ,  JEWELL, Richard, A. ,  PARK, David, W.

IPC: D21H11/20

CPC classification number: C08B11/12 ,  D21C9/005 ,  D21H11/20 ,  D21H17/29 ,  D21H17/55 ,  D21H17/56

Abstract: The invention relates to paper and similar products made with at least a portion of the papermaking furnish being essentially water insoluble carboxyethyl cellulose fibers. A cationic additive material, such as a polyamide epichlorohydrin wet strength resin or cationic starch, is also required. From 2-100 % of the modified fiber is used in conjunction with a usual papermaking fiber. The D.S. of the carboxyethylated fiber is in the range of about 0.01-0.3, preferably about 0.025-0.10. A notable feature of paper products made with the fiber/cationic additive system is an improved ratio of wet to dry tensile and burst strengths compared with sheets made from unmodified fiber.

Abstract translation: 本发明涉及用至少一部分造纸配料制成的纸和类似产品基本上是水不溶性羧乙基纤维素纤维。 还需要阳离子添加剂材料，例如聚酰胺表氯醇湿强度树脂或阳离子淀粉。 改性纤维的2-100％与通常的造纸纤维结合使用。 羧乙基纤维的D.S.在约0.01-0.3，优选约0.025-0.10的范围内。 使用纤维/阳离子添加剂系统制成的纸制品的显着特征是与未改性纤维制成的片材相比，湿拉伸强度与抗拉强度的比率提高了。

公开(公告)号：WO1997000354A1

公开(公告)日：1997-01-03

申请号：PCT/US1996008063

申请日：1996-05-30

Applicant: THE PROCTER & GAMBLE COMPANY ,  WEYERHAEUSER COMPANY

Inventor： THE PROCTER & GAMBLE COMPANY ,  WEYERHAEUSER COMPANY ,  COOK, Jeffery Todd ,  DANIELS, Walter, Douglas ,  RODRIGUEZ, Pedro, Antonio ,  GRAEF, Peter, Allen ,  BOLSTAD, Clifford, Roy ,  DUNCAN, William, Lloyd

IPC: D21C09/00

CPC classification number: A61L15/46 ,  A61L15/24 ,  A61L15/28 ,  A61L2300/11 ,  D06M11/38 ,  D06M11/50 ,  D06M13/192 ,  D06M13/207 ,  D21C9/005 ,  C08L33/02 ,  C08L1/00

Abstract: Disclosed is a process for making reduced odor individualized, crosslinked fibers which includes the steps of providing cellulosic fibers, contacting the fibers with a solution containing a C2-C9 polycarboxylic acid crosslinking agent, mechanically separating the fibers into substantially individual form, drying the fibers and reacting the crosslinking agent with the individualized fibers to form intrafiber crosslink bonds. The individualized cellulosic fibers are then contacted with a strong alkaline solution and strong oxidizing agent to reduce the odor and increase the brightness. Preferably, the crosslinking agent is citric acid, and preferably, between about 1.0 weight % and about 12.0 weight % of the crosslinking agent reacts to form the intrafiber crosslink bonds. Preferably, the alkaline solution is an aqueous solution of sodium hydroxide, and preferably, about 0.09 weight % of the sodium hydroxide, on a dry fiber weight basis, is applied to the crosslinked fibers. Preferably, the oxidizing agent is hydrogen peroxide, and preferably, about 0.04 weight % of the hydrogen peroxide, on a dry fiber weight basis, is applied to the crosslinked fiber. The reduced odor individualized, crosslinked fibers are useful in a variety of absorbent structure applications.

Abstract translation: 公开了一种制备减少气味的个体化交联纤维的方法，其包括以下步骤：提供纤维素纤维，使纤维与含有C 2 -C 9多元羧酸交联剂的溶液接触，将纤维机械分离成基本上单独的形式，干燥纤维和 使交联剂与各自的纤维反应形成纤维内交联键。 然后将个体化纤维素纤维与强碱性溶液和强氧化剂接触以降低气味并增加亮度。 优选地，交联剂是柠檬酸，优选约1.0重量％至约12.0重量％的交联剂反应以形成纤维内交联键。 优选地，碱性溶液是氢氧化钠的水溶液，优选将基于干纤维重量的约0.09重量％的氢氧化钠施加到交联纤维上。 优选地，氧化剂是过氧化氢，优选地，基于干纤维重量的约0.04重量％的过氧化氢施加到交联纤维上。 减少的气味个性化的交联纤维可用于各种吸收结构应用。

公开(公告)号：WO1995005064A1

公开(公告)日：1995-02-23

申请号：PCT/US1993007804

申请日：1993-08-18

Applicant: WEYERHAEUSER COMPANY

Inventor： WEYERHAEUSER COMPANY ,  BRYAN, Curtis, A. ,  CARLSON, William, C. ,  MCKINNIS, Michael, K.

IPC: A01C01/06

CPC classification number: A01H4/00

Abstract: The invention is a method of ordering plant embryos so that a specified end of the embryo is always oriented in a predetermined direction. The embryos are preferably first fairly rapidly desiccated to about 15 % moisture content. They are then suspended in a benign liquid flotation medium having a density in the range of about 1.059-1.104 g/cm . The density must be adjusted empirically so that a predominant number of viable embryos will float and nonviable embryos will sink. In at least the case of conifer somatic embryos, they will float with the end bearing the latent cotyledons upward. After sufficient separation time in the flotation medium the oriented embryos are swept by a flowing liquid stream into a conduit. They enter cotyledon end first and are then carried to a delivery point without losing that orientation. Here they are separated from the transporting medium. The embryos, still positioned cotyledon end first, may then be picked up by robotic or other means for further processing, such as insertion into an artificial seed.

Abstract translation: 本发明是一种排序植物胚胎的方法，使得胚胎的特定末端总是沿预定方向取向。 胚胎优选首先相当快速地干燥至约15％的水分含量。 然后将它们悬浮在密度在约1.059-1.104g / cm 3范围内的良性液体浮选介质中。 密度必须经验性地调整，使得主要数量的活胚可以漂浮，而不可行胚胎将下沉。 至少在针叶树体细胞胚胎的情况下，它们将浮起，其末端将潜在子叶向上。 在浮选介质中足够的分离时间后，定向胚胎被流动的液体流扫入管道中。 它们首先进入子叶，然后携带到一个传送点，而不会失去该方向。 这里它们与运输介质分离。 然后可以通过机器人或其他方式拾取仍然位于子叶的胚胎，用于进一步加工，例如插入人造种子中。

公开(公告)号：WO1995000705A1

公开(公告)日：1995-01-05

申请号：PCT/US1993006124

申请日：1993-06-25

Applicant: WEYERHAEUSER COMPANY

Inventor： WEYERHAEUSER COMPANY ,  GRAEF, Peter, A. ,  HUNTER, Frank, R.

IPC: D21H23/14

CPC classification number: D21H21/06 ,  A61F2013/530007 ,  A61F2013/530474 ,  D21H11/20 ,  D21H17/06 ,  D21H17/07 ,  D21H17/09 ,  D21H17/10 ,  D21H17/15 ,  D21H21/14 ,  D21H21/24 ,  D21H23/14 ,  D21H23/18 ,  D21H23/28

Abstract: The invention is a method of making a wet formed, sheeted, readily reslurriable sheeted crosslinked cellulose and the products made by the method. Crosslinked wood pulp fibers tend to be quite brittle. If crosslinked while in sheeted form, the sheets cannot be readily defibred, either in a wet or dry state, without serious fiber degradation. The sheet products of the present invention can be easily redispersed or repulped in water without significant fiber breakage. The present products are made by including within the sheet, while still in wet form, a debonding or softening agent which is preferably added before the latent crosslinking reactant. Most preferably the debonder is added prior to the headbox of a paper machine and the crosslinking reactant is applied near theend of the forming wire or at the press section. The treated sheet is dried conventionally. Crosslinking may occur entirely during drying or during a period of additional heating, usually at a temperature in excess of 100 DEG C for a short period of time. Conventional debonding agents and crosslinking reactants are suitable. The softening agent apparently reduces or prevents adhesive bonding between adjacent fibers caused by polymer formation external to the fibers under reaction conditions.

Abstract translation: 本发明是一种制成湿成型，片状，易于再生的片状交联纤维素和通过该方法制备的产品的方法。 交联的木浆纤维往往是相当脆的。 如果以片状形式交联，则在湿或干燥状态下，片材不能容易地除去，而不会严重的纤维降解。 本发明的片状产品可以容易地再分散或重新分配在水中而不会明显的纤维断裂。 本产品通过在片状物中包含湿态形式，优选在潜在交联反应剂之前加入的脱粘剂或软化剂制成。 最优选的是，在造纸机的流浆箱之前加入脱粘剂，并且将交联反应物施加在成形网的末端附近或在压榨部分附近。 经处理的片材是常规干燥的。 交联可能在干燥期间或在额外加热期间完全发生，通常在超过100℃的温度下短时间内完成。 常规脱粘剂和交联反应物是合适的。 在反应条件下，柔软剂显着降低或防止由纤维外部的聚合物形成引起的相邻纤维之间的粘结。

公开(公告)号：WO1993018229A1

公开(公告)日：1993-09-16

申请号：PCT/US1993002327

申请日：1993-03-12

Applicant: WEYERHAEUSER COMPANY

Inventor： WEYERHAEUSER COMPANY ,  TIEDEMAN, George, T.

IPC: D21H27/30

CPC classification number: B32B5/26 ,  D21H17/52 ,  D21H17/53 ,  D21H17/57 ,  D21H25/06 ,  D21H27/30 ,  Y10T428/1303 ,  Y10T428/1362 ,  Y10T428/1366 ,  Y10T428/24694 ,  Y10T428/31511 ,  Y10T428/31515 ,  Y10T428/31978 ,  Y10T428/31982 ,  Y10T442/659

Abstract: Polyether-reinforced fiber-based materials, and methods for their manufacture, are disclosed. A representative material is a sheetlike ply having on one or both faces thereof a polyether-impregnated stratum extending depthwise into the ply thickness dimension no greater than about one-half the ply thickness dimension so as to leave a portion of the ply thickness dimension unimpregnated with polyether. The materials can comprise plural superposed plies wherein at least one ply has at least one polyether-impregnated stratum, such as polyether-reinforced corrugated paperboard. The polyether-reinforced materials have excellent compression strength and foldability. Each polyether-reinforced stratum is made by controllably applying a low-viscosity liquid mixture of an epoxy resin and a hardener, wherein the epoxy resin is substantially non-prepolymerized, to a fibrous web surface, then curing the resin mixture. The polyether-reinforced materials can be folded after curing and are useful for making cartons and other products.

Abstract translation: 公开了聚醚增强纤维基材料及其制造方法。 代表性材料是片状层，其一面或两面具有聚醚浸渍层，其深度方向延伸到层厚度尺寸不大于层厚度尺寸的大约二分之一，以便使一部分层厚度尺寸未被浸渍 聚醚。 材料可以包括多个重叠的层，其中至少一层具有至少一个聚醚浸渍的层，例如聚醚增强的瓦楞纸板。 聚醚增强材料具有优异的抗压强度和折叠性。 每个聚醚增强层通过可控地将环氧树脂和固化剂的低粘度液体混合物（其中环氧树脂基本上未预聚合）施加到纤维网表面，然后固化树脂混合物。 聚醚增强材料可以在固化后折叠，可用于制造纸箱和其他产品。

公开(公告)号：WO1993011182A1

公开(公告)日：1993-06-10

申请号：PCT/US1992009642

申请日：1992-11-06

Applicant: WEYERHAEUSER COMPANY

Inventor： WEYERHAEUSER COMPANY ,  WATT, Walter, D. ,  ADAMS, Terry, N. ,  PETERSON, Gary, D. ,  STEPHENS, R., Scott ,  ASKEW, James, M.

IPC: C08J03/03

CPC classification number: D21H23/56 ,  C08L1/286 ,  C09D101/02 ,  D21H19/34 ,  D21H21/52 ,  D21H23/50 ,  C08L2666/02

Abstract: A suspension of bacterial cellulose having a reticulated structure has been conditioned to remain in suspension when the suspension is under shear so that it may be coated on a substrate. The suspension of bacterial cellulose is homogenized and thereafter filtered to provide a bacterial cellulose component having a size no greater than 125 microns. This allows a process for applying bacterial cellulose as a coating on a substrate on a substantially continuous basis, either by roll coating or spraying. It also provides a coated product in which the bacterial cellulose is substantially uniform, taking into account the normal discontinuities of roll coating and spray coating.

Abstract translation: 具有网状结构的细菌纤维素的悬浮液已被调理为当悬浮液处于剪切状态时保持悬浮液，使得其可以涂覆在基材上。 将细菌纤维素的悬浮液均质化，然后过滤以提供尺寸不大于125微米的细菌纤维素组分。 这允许通过辊涂或喷涂将基本上连续的细菌纤维素作为涂层施用于基底上的方法。 它还提供了其中细菌纤维素基本上均匀的涂覆产品，考虑到辊涂和喷涂的正常不连续性。