公开(公告)号：WO1991016445A1

公开(公告)日：1991-10-31

申请号：PCT/US1991002592

申请日：1991-04-16

Applicant: WEYERHAEUSER COMPANY

Inventor： WEYERHAEUSER COMPANY ,  GUPTA, Maharaja, K. ,  JOHNSON, Donald, C.

IPC: C12P19/04

CPC classification number: C12P19/04 ,  D06L4/10 ,  D06L4/23 ,  D06L4/24 ,  D06L4/30

Abstract: The present invention is directed to microbially produced cellulose having enhanced color properties as a result of the removal of colored impurities. Treatment involves processing with a brightening agent such as sodium hypochlorite, hydrogen peroxide, sulfur dioxide, or the like, under reaction conditions that favor removal of colored impurities without impairing important physical properties of the bacterial cellulose, such as tensile strength. Shear mixing before or after treatment with a brightening agent results in substantial brightness improvements. Treatment according to methods of the present invention also reduces the level of nitrogen impurities in bacterial cellulose.

Abstract translation: 本发明涉及由于去除有色杂质而具有增强的颜色特性的微生物纤维素。 处理涉及在有利于去除有色杂质而不损害细菌纤维素的重要物理性能的拉伸强度的反应条件下，用次氯酸钠，过氧化氢，二氧化硫等增白剂进行处理。 用增亮剂处理之前或之后的剪切混合导致显着的亮度改善。 根据本发明方法的处理也降低了细菌纤维素中氮杂质的含量。

公开(公告)号：WO1991010416A1

公开(公告)日：1991-07-25

申请号：PCT/US1991000059

申请日：1991-01-03

Applicant: WEYERHAEUSER COMPANY

Inventor： WEYERHAEUSER COMPANY ,  PIENIAK, Heinz, A. ,  HUFFMAN, Gloria

IPC: A61F13/15

CPC classification number: A61F13/53418 ,  A61F13/49011 ,  A61F13/491 ,  A61F13/49413 ,  A61F13/533 ,  A61F13/535 ,  A61F13/53713 ,  A61F13/53747 ,  A61F13/53756 ,  A61F2013/15406 ,  A61F2013/4708 ,  A61F2013/49076 ,  A61F2013/4948 ,  A61F2013/51409 ,  A61F2013/530496 ,  A61F2013/530532 ,  A61F2013/530569 ,  A61F2013/530591 ,  A61F2013/530708 ,  A61F2013/530941 ,  A61F2013/530978 ,  A61F2013/53721 ,  A61F2013/588

Abstract: Absorbent panel structures for use in disposable diapers. The absorbent panel structures (14) comprise a bulk layer (18) and a compressed composite absorbent layer (16). The compressed composite absorbent layer (16) having a resilient fibrous web (30) containing at least about 200 percent superabsorbent material (32) by weight of the fibrous web distributed therein and a wicking layer (34) of densified hydrophilic fibers. The compressed composite absorbent layer (16) is located at a front portion of the panel (14) that comprises from about 40 percent to about 80 percent of the length of the panel.

Abstract translation: 用于一次性尿布的吸收性面板结构。 吸收性面板结构（14）包括本体层（18）和压缩复合吸收层（16）。 压缩的复合吸收层（16）具有弹性纤维网（30），其包含分布在其中的纤维幅材的重量的至少约200％的超吸收材料（32）和致密化的亲水纤维的芯吸层（34）。 压缩的复合吸收层（16）位于面板（14）的前部，其包括面板长度的约40％至约80％。

公开(公告)号：WO1991009206A1

公开(公告)日：1991-06-27

申请号：PCT/US1990007318

申请日：1990-12-11

Applicant: WEYERHAEUSER COMPANY ,  WESTLAND, John, A. ,  PENNY, Glenn, S. ,  STEPHENS, R., Scott ,  WINSLOW, Alan, R.

Inventor： WEYERHAEUSER COMPANY

IPC: E21B43/26

CPC classification number: C09K8/90 ,  C09K8/62 ,  E21B43/267 ,  Y10S435/823 ,  Y10S507/922

Abstract: The addition of relatively small quantities of a bacterial cellulose to hydraulic fracturing fluids improves their rheological properties for hydraulic fracturing of geological formations. Proppant suspension is markedly improved and friction loss through well casings is significantly reduced, resulting in lower pumping energy requirements. Computer models also indicate that formation fractures will be propagated for greater distances as will the propped portion of the fracture. Normally only about 0.60-1.8 g of bacterial cellulose per liter of fracturing fluid is needed. A preferred bacterial cellulose is one made in agitated fermentors using mutation resistant strains of a bacterium from the genus Acetobacter.

公开(公告)号：WO1991008717A1

公开(公告)日：1991-06-27

申请号：PCT/US1990007329

申请日：1990-12-11

Applicant: WEYERHAEUSER COMPANY

Inventor： WEYERHAEUSER COMPANY ,  ISKRA, Michael, J.

IPC: A61F13/15

CPC classification number: A61F13/53713 ,  A61F13/49 ,  A61F13/49011 ,  A61F13/491 ,  A61F13/49413 ,  A61F13/533 ,  A61F13/53747 ,  A61F13/53756 ,  A61F2013/15357 ,  A61F2013/15406 ,  A61F2013/4708 ,  A61F2013/4948 ,  A61F2013/51409 ,  A61F2013/530496 ,  A61F2013/530532 ,  A61F2013/530569 ,  A61F2013/530583 ,  A61F2013/530591 ,  A61F2013/5307 ,  A61F2013/530708 ,  A61F2013/530941 ,  A61F2013/530978 ,  A61F2013/53721 ,  A61F2013/588

Abstract: An absorbent panel structure, for use in a disposable diaper or the like, comprising at least about 400 percent by weight of superabsorbent material (14) and at least one wicking layer (30) of hydrophilic fiber particles. The absorbent panel has an average Taber stiffness value in the machine direction of less than about 7 and an absorptive capacity of at least about 300 ml.

公开(公告)号：WO1991005854A1

公开(公告)日：1991-05-02

申请号：PCT/US1990006057

申请日：1990-10-22

Applicant: WEYERHAEUSER COMPANY

Inventor： WEYERHAEUSER COMPANY ,  GUPTA, Pramod, K. ,  PULLMAN, Gerald, S.

IPC: C12N05/00

CPC classification number: C12N5/04 ,  C12N5/0025

Abstract: The invention is a method for reproducing coniferous trees by somatic embryogenesis using plant tissue culture. It comprises a multistage process in which a fertilized immature-embryo is excised and cultured to induce early state proembryos, which may be further cultured in liquid media without auxins or cytokinins but with the addition of abscisic acid, to develop late stage proembryos under significantly higher osmotic conditions of about 450 mM/kg. The medium may have added exogenous abscisic acid and must contain an absorbent material. After several weeks in culture the vigor and morphology of the embryos developed by the process are improved and the tendency of premature germination is reduced. The somatic embryos may be germinated before or after storage and transplanted to soil for further growth.

Abstract translation: 本发明是通过使用植物组织培养的体细胞胚发生来再现针叶树的方法。 它包括多阶段过程，其中切除受精的未成熟胚并培养以诱导早期状态胚胎，其可以在没有生长素或细胞分裂素的液体培养基中进一步培养，但是加入脱落酸以显着地发展晚期胚胎 约450mM / kg的渗透条件。 培养基可以加入外源性脱落酸，并且必须含有吸收材料。 经过数周的培养，该过程开发的胚胎的活力和形态得到改善，并且早发萌发的趋势降低。 体细胞胚可以在储存之前或之后发芽，并移植到土壤中进一步生长。

公开(公告)号：WO1991002448A1

公开(公告)日：1991-03-07

申请号：PCT/US1990004471

申请日：1990-08-09

Applicant: WEYERHAEUSER COMPANY

Inventor： WEYERHAEUSER COMPANY ,  PULLMAN, Gerald, S. ,  YANCEY, Michael, J.

IPC: A01B79/00

CPC classification number: A01G9/086 ,  A01C1/00

Abstract: The invention is a method for treating a plant growth medium (10) containing a plant (12) so that the growth medium (10) remains intact around the roots during transplanting operations. This involves treating the growth medium (10) shortly before transplanting with an adhesive-forming substance which will bond the particles of the growth medium (10) to form an intact plug (14). The adhesive-forming substance must be physiologically innocuous. Materials such as warmed solution of agar or soluble alginates have been found to be very suitable. When an alginate is used, it is rendered into an insoluble gel by secondary application of a chemical salt such as calcium nitrate. The method is particularly useful for growing seedlings (12) or cuttings which must be transplanted while the root structure (16) is still delicate and subject to damage from handling.

公开(公告)号：WO1988009502A2

公开(公告)日：1988-12-01

申请号：PCT/US1988001557

申请日：1988-05-11

Applicant: WEYERHAEUSER COMPANY

Inventor： WEYERHAEUSER COMPANY ,  SHEARER, Dwayne, M. ,  BEETHAM, Richard, C. ,  BEALL, Frank, C. ,  RODGERS, John, M.

IPC: G01N29/04

CPC classification number: G05B19/41865 ,  G01N29/2493 ,  G01N33/46 ,  G01N2291/0231 ,  G01N2291/048 ,  Y02P90/20

Abstract: The invention is a method for the on-line nondestructive determination of the internal bond strength of composite panel products. The method involves impinging an ultrasound pulse against the panel by a first transducer and receiving a transmitted pulse at a second transducer. The received signal strength, temperature and panel thickness are entered into an algorithm from which the internal bond may be calculated. Preferably the receiving transducer is located on the opposite side of the panel and displaced somewhat from the first transducer. The inclusion of temperature and panel thickness as independent variables greatly improves the accuracy over that available from uncorrected ultrasound testing.

Abstract translation: 本发明是在线非破坏性测定复合板产品的内部结合强度的方法。 该方法包括通过第一换能器对面板施加超声脉冲，并在第二换能器处接收发射的脉冲。 接收的信号强度，温度和面板厚度被输入到可以从其计算内部键的算法中。 优选地，接收换能器位于面板的相对侧并且稍微偏离第一换能器。 将温度和面板厚度作为独立变量的含量大大提高了从未校正的超声波测试可用的准确度。

公开(公告)号：WO1987001178A1

公开(公告)日：1987-02-26

申请号：PCT/US1986001000

申请日：1986-05-08

Applicant: WEYERHAEUSER COMPANY

Inventor： WEYERHAEUSER COMPANY ,  ADAMS, Terry, Noel ,  SPURRELL, Robert, Melven ,  KARSNER, Grant, Gordon ,  GOLIKE, Gregory, Philip ,  LINCOLN, James, Frederick, Lewis

IPC: F23D01/00

CPC classification number: F23K1/00 ,  F23G5/02

Abstract: The recovery of heat values from biomass materials such as wood waste or peat. Wood waste or ''hog fuel'' from the forest industries is of particular interest. It has been discovered that this material can be burned with no fossil fuel support in an air suspension-type burner, located in a boiler (34) without the need to finely pulverize the full fuel stream. One portion of the biomass fuel stream is ground (16) so that it is less than 100 mm in diameter and fed (30) to the burner. This fine portion serves as an ignition component and should comprise about 20% of the total heating value of the fuel, using a conventional air suspension burner, or 10% of the total heating value using a staged burner, when the burners are operated at full load. The balance of the fuel fed (32) to the burner can be of much larger particle size. This can be up to about 10 mm or even greater in maximum dimension if used with a grate equipped boiler. If the boiler lacks a grate, the principal fuel component should not exceed about 1 mm in thichness and 4 mm in any other dimension if carryover is to be avoided. A key aspect of the invention is the discovery that the total amount of ignition fuel component should be maintained constant regardless of burner load.

Abstract translation: 从木材废物或泥炭等生物质材料回收热量。 森林工业的木材废料或“猪肉燃料”特别令人感兴趣。 已经发现，这种材料可以在位于锅炉（34）中的空气悬浮式燃烧器中不用化石燃料支持物燃烧，而不需要对全部燃料流进行细粉碎。 生物质燃料流的一部分被研磨（16），使其直径小于100mm，并向燃烧器供给（30）。 当燃烧器完全运行时，该细小部分用作点火组件，并且应使用常规空气悬架燃烧器占燃料总热值的约20％，或使用分段式燃烧器的总热值的10％ 加载。 燃料供给的燃料（32）的平衡可以是大得多的粒度。 如果与装有炉排的锅炉一起使用，最大尺寸可以达到约10mm或甚至更大。 如果锅炉缺乏炉排，主要燃料组分不应超过约1毫米，任何其他尺寸均不得超过4毫米。 本发明的一个关键方面是发现，不管燃烧器负载如何，点燃燃料组分的总量应该保持恒定。

公开(公告)号：WO1987000450A1

公开(公告)日：1987-01-29

申请号：PCT/US1986000575

申请日：1986-03-21

Applicant: WEYERHAEUSER COMPANY

Inventor： WEYERHAEUSER COMPANY ,  MEREDITH, Michael, Dean ,  BENTVELZEN, Joseph, Maria ,  JORDAN, Marvin, Franklin

IPC: B01F15/02

CPC classification number: B01F7/00766 ,  B01F7/00633 ,  B01F2005/0008 ,  D21C9/10

Abstract: A double sided mixer promotes efficient and effective chemical bleaching of pulp. In the case of oxygen bleaching, mixing of gas by the transverse motion of rotors (78, 81) through the pulp occurs throughout the mixer (10). A double sided mixer has more rotors per unit volume, and low energy and material requirements.

Abstract translation: 双面混合器促进纸浆的高效和有效的化学漂白。 在氧气漂白的情况下，通过转子（78,81）的横向运动通过纸浆混合气体贯穿整个混合器（10）。 双面混合机每单位体积具有更多的转子，并且能量和材料要求低。

公开(公告)号：WO1986005708A1

公开(公告)日：1986-10-09

申请号：PCT/US1985000552

申请日：1985-04-01

Applicant: WEYERHAEUSER COMPANY

Inventor： WEYERHAEUSER COMPANY ,  MEREDITH, Michael, Dean ,  BENTVELZEN, Joseph, Maria ,  JORDAN, Marvin, Franklin

IPC: B01D19/00

CPC classification number: B01D19/0057 ,  D21C9/147 ,  D21D5/26

Abstract: A small deaeration tank and a process of operating this tank which may be either at atmospheric pressure or under low pressure or vacuum and a system of operating this tank which allows pulp which has been treated with oxygen to be deaerated before being washed. A closed tank would allow steam or oxygen to be recovered. Preferably it would be the same diameter as an oxygen reactor so that it could be placed on top of the reactor and be supported by the reactor. It would have no moving parts, so there would be no need for motors to be mounted on or near the tank. The deaerator is a small open tank (50) having an inlet pipe (27) and a tangential swirl inducing inlet pipe (57). The locations and sizes of these pipes provide optimum deaeration. The swirl inducing fluid is the filtrate from the washer (36) after the oxygen bleach (23).

Abstract translation: 小型除气罐和操作该罐的方法，其可以是大气压或低压还是真空，以及操作该罐的系统，其允许已经用氧气处理的纸浆在洗涤之前脱气。 封闭的罐将允许回收蒸汽或氧气。 优选地，它将与氧反应器的直径相同，使得其可以放置在反应器的顶部并被反应器支撑。 它将没有移动部件，因此不需要马达安装在油箱上或附近。 除气器是具有入口管（27）和切向涡流诱导入口管（57）的小开口罐（50）。 这些管道的位置和尺寸提供了最佳的脱气。 涡流诱导流体是在氧漂白剂（23）之后的洗涤器（36）的滤液。