公开(公告)号：WO1993008328A1

公开(公告)日：1993-04-29

申请号：PCT/US1992009017

申请日：1992-10-22

Applicant: WEYERHAEUSER COMPANY

Inventor： WEYERHAEUSER COMPANY ,  KARTOVAARA, Ilkka, Kalervo ,  VALTONEN, Erkka, Eero, Johannes

IPC: D21G01/00

CPC classification number: D21G1/00 ,  D21G9/00

Abstract: A paper test calendering machine is constructed with a pair of opposed guide rolls (1, 1') about which a web of paper (30) or the like travels. A pair of opening and closing nip rolls (2, 2') are operable to exert pressure on the traveling web. Sensing means (A, B) are operable to detect a deviation in the smooth web and to then activate means (6) to relieve the pressure on the web momentarily as the deviation passes.

公开(公告)号：WO1993005232A1

公开(公告)日：1993-03-18

申请号：PCT/US1992007302

申请日：1992-08-28

Applicant: WEYERHAEUSER COMPANY

Inventor： WEYERHAEUSER COMPANY ,  LINCOLN, James, F., L. ,  ANDERSEN, Alan, G.

IPC: D21H17/57

CPC classification number: D21H17/00 ,  D21H17/57

Abstract: Novel methods for manufacturing polyurea-cellulose composites are disclosed. The methods comprise impregnating a substantially delignified cellulosic fibrous material with a polyisocyanate resin. The resin can be applied to the cellulosic material either undiluted or diluted with up to about 20 % of an organic solvent miscible therewith, such as propylene carbonate. The resulting polyisocyanate-impregnated cellulose is pressurized at about 300 psig to about 1200 psig, such as by using either a preheated or a non-preheated press, until the core temperature of the impregnated cellulose reaches about 275 DEG F to about 350 DEG F. This combination of temperature and pressure cures the polyisocyanate, thus forming the polyurea-impregnated composite. Afterward, the composite is cooled while maintaining the pressure until the core temperature drops to about 100 DEG F to less than 212 DEG F. Then, the pressure is decreased to atmospheric. The method can also include, during the curing process, a temporary drop in pressure to atmospheric for about 4 seconds to about 10 seconds to release any gases entrapped in the polyisocyanate-impregnated cellulose during curing. Multiple-ply composites can be similarly made.

Abstract translation: 公开了制备聚脲 - 纤维素复合材料的新方法。 所述方法包括用多异氰酸酯树脂浸渍基本上脱木素的纤维素纤维材料。 树脂可以施用到未稀释或用最多约20％的与其混溶的有机溶剂如碳酸丙烯酯稀释的纤维素材料。 所得聚异氰酸酯浸渍的纤维素在约300psig至约1200psig下加压，例如通过使用预热或非预热的压力机，直到浸渍的纤维素的芯温达到约275°F至约350°F。 这种温度和压力的组合使多异氰酸酯固化，从而形成聚脲浸渍的复合材料。 之后，在保持压力的同时冷却复合材料，直到核心温度降至约100°F至小于212°F。然后将压力降至大气压。 该方法还可以包括在固化过程中，临时将压力降至大气压约4秒至约10秒以释放在固化过程中捕获在聚异氰酸酯浸渍的纤维素中的任何气体。 可以类似地制备多层复合材料。

公开(公告)号：WO1992018631A1

公开(公告)日：1992-10-29

申请号：PCT/US1992003338

申请日：1992-04-22

Applicant: WEYERHAEUSER COMPANY

Inventor： WEYERHAEUSER COMPANY ,  BEN-BASSAT, Arie ,  CALHOON, Roger, D. ,  FEAR, Anna, Lisa ,  GELFAND, David, H. ,  MEADE, James, H. ,  TAL, Rony ,  WONG, Hing, C. ,  BENZIMAN, Moshe

IPC: C12N15/54

CPC classification number: C12N9/1059 ,  C07K14/195 ,  C12N9/88 ,  C12N15/52 ,  C12N15/72 ,  C12N15/74 ,  C12R1/02 ,  Y10S435/823

Abstract: Nucleic acid sequences encoding the bacterial cellulose synthase operon derived from Acetobacter are disclosed. Methods for isolating the genes, vectors containing the genes, and transformed hosts useful for the expression of recombinant bacterial cellulose synthase or production of cellulose are also described.

Abstract translation: 公开了编码源自醋杆菌的细菌纤维素合成酶操纵子的核酸序列。 还描述了分离基因的方法，含有该基因的载体和用于表达重组细菌纤维素合成酶或纤维素生产的转化宿主。

公开(公告)号：WO1992016365A1

公开(公告)日：1992-10-01

申请号：PCT/US1992002206

申请日：1992-03-18

Applicant: WEYERHAEUSER COMPANY

Inventor： WEYERHAEUSER COMPANY ,  DIMAKIS, Alkiviadis, G.

IPC: B32B05/18

CPC classification number: B32B5/18 ,  B32B15/046 ,  B32B15/14 ,  B32B2260/028 ,  B32B2260/046 ,  B32B2305/72 ,  B32B2307/416 ,  B32B2607/00 ,  E04B1/762 ,  E04C2/296 ,  E04F13/16 ,  Y10T428/31978 ,  Y10T428/31982 ,  Y10T428/31986

Abstract: An insulating sheathing panel has an insulating core of a cellular material, such as foam, sandwiched between polyisocyanate, such as PMDI, impregnated cover sheets of cellulosic material. The resulting panels offer structural reinforcement as well as insulating qualities to a building framework.

公开(公告)号：WO1992007762A1

公开(公告)日：1992-05-14

申请号：PCT/US1991007968

申请日：1991-10-28

Applicant: WEYERHAEUSER COMPANY

Inventor： WEYERHAEUSER COMPANY ,  BOLSTAD, Clifford, R.

IPC: B65B27/12

CPC classification number: B65B27/12

Abstract: Restrained bales are formed for transporting high-bulk, crosslinked cellulose fiber in a reduced volume. A limited amount of force is used in compressing the fiber into the bales so that the fiber is not damaged. The limited amount of force used allows the bale, when restraints are released, to expand to about twice its restrained volume. Fiber damage is further minimized by limiting the amount of compression to the minimum required so that a transport container is completely filled to its volume and payload capacities.

公开(公告)号：WO1992004256A2

公开(公告)日：1992-03-19

申请号：PCT/US1991006341

申请日：1991-09-05

Applicant: WEYERHAEUSER COMPANY

Inventor： WEYERHAEUSER COMPANY ,  FLOYD, Stan, Louis ,  MUISE, Herbert, Donald ,  STANISH, Mark, A.

IPC: B65D811/18

CPC classification number: B65D81/2084 ,  B65B25/041 ,  B65D81/18 ,  B65D85/34

Abstract: An improved package is described for use in packaging a wide variety of products, and in particular perishable food and horticultural products. The products are placed within a container of the type which establishes a modified atmosphere environment therein and is cooled, as by placing the container in contact with a cooling element partially surrounding the container. The cooling element may hold liquid which is evaporated to enhance the cooling. The container and cooling collar may be subjected to vacuum cooling. The container may include a mechanism to enhance the bulk gas transfer rate during the application of the vacuum while still maintaining the desired atmosphere within the container. The container atmosphere may be precharged with gas of a desired composition. In addition, fumigants may also be included therein. The package is suitable for field packing applications in which the product, such as strawberries, is picked directly into the container surrounded by the cooling collar with the container and cooling collar being placed in an outer box or other receptacle. The modified atmosphere package may be sealed and palletized prior to vacuum cooling.

Abstract translation: 描述了一种改进的包装，用于包装各种各样的产品，特别是易腐食品和园艺产品。 将产品放置在其中形成改性气氛环境的类型的容器中，并通过将容器与部分围绕容器的冷却元件接触来冷却。 冷却元件可以容纳蒸发的液体以增强冷却。 容器和冷却套环可以进行真空冷却。 容器可以包括在真空施加期间增强主体气体传递速率同时仍然保持容器内的期望气氛的机构。 容器气氛可以用所需组成的气体预充电。 此外，也可以包括熏蒸剂。 该包装适用于现场包装应用，其中将产品（例如草莓）直接从被冷却套环包围的容器中取出，容器和冷却套环被放置在外箱或其它容器中。 改性气氛包装可以在真空冷却之前被密封和堆垛。

公开(公告)号：WO1992003286A1

公开(公告)日：1992-03-05

申请号：PCT/US1990004548

申请日：1990-08-13

Applicant: WEYERHAEUSER COMPANY

Inventor： WEYERHAEUSER COMPANY ,  HUNTER, Frank, R.

IPC: B32B21/06

CPC classification number: B32B23/04 ,  B32B23/044 ,  B32B23/16 ,  B32B38/08 ,  B32B2260/023 ,  B32B2260/046 ,  B32B2317/122 ,  B32B2317/16 ,  C08G18/6484 ,  C08L1/02 ,  C08L97/02 ,  D21H17/57 ,  D21H25/06 ,  D21H27/30 ,  Y10T428/31978 ,  Y10T428/31982 ,  Y10T428/31986 ,  Y10T428/31989 ,  C08L2666/02 ,  C08L2666/14

Abstract: The invention is a method of making a cellulose based polymeric material and the products of the invention. A cellulosic substrate is impregnated with an essentially uncatalyzed polyfunctional isocyanate and pressed at elevated temperature and pressure. The substrate may be a chemical or thermomechanical pulp or paper while the isocyanate is preferably diphenylmethane diisocyanate or its oligomers. Pressing conditions are preferably in the range of about 150 DEG -245 DEG C at pressures in the range of about 2700-8300 kPa for times less than 2 minutes. Moisture content of the cellulosic substrate is not highly critical and may be as high as 7 % without adverse effects. The product is especially useful as overlays and for forming strong, water resistant laminates which can be molded in either flat or three dimensional forms.

Abstract translation: 本发明是制备纤维素基聚合物材料和本发明产品的方法。 用基本上未催化的多官能异氰酸酯浸渍纤维素基质，并在升高的温度和压力下压制。 基材可以是化学或热机械纸浆或纸，而异氰酸酯优选为二苯基甲烷二异氰酸酯或其低聚物。 压力条件优选在约150°-245℃的范围内，在约2700-8300kPa范围内的压力小于2分钟。 纤维素底物的水分含量不是非常关键的，并且可以高达7％而没有不利影响。 该产品特别用作覆盖物和用于形成强的防水层压材料，其可以以平坦或三维形式成型。

公开(公告)号：WO1991008142A1

公开(公告)日：1991-06-13

申请号：PCT/US1990005185

申请日：1990-09-13

Applicant: WEYERHAEUSER COMPANY

Inventor： WEYERHAEUSER COMPANY ,  SPURRELL, Robert, M. ,  JORDAN, Terry, B. ,  HENSEY, Warren, R.

IPC: B65D05/08

CPC classification number: B65D5/067 ,  B65D5/4266 ,  Y10S229/92

Abstract: The purpose of the present invention is to prevent or minimize the damage to a carton caused by sudden impact. This damage results most often from the cartons being dropped from some height. The type of carton damage is usually corner fracture. The tensile forces applied to the corner as the carton hits causes a tear to form at the base of the vertical score line (12) where the carton folds to make the bottom corner. A single score line (21) is formed in and at the side of the side panel (11) of a carton. Each score line extends outwardly from each side of the side vertical score lines which define the side panels of the carton. The purpose of these score lines is to induce a fold to form preferentially at the intersection of the score line and the vertical score line and away from the carton bottom corner when the carton is dropped or suddenly shocked. Each of the score lines should be long enough and placed a distance from the bottom wall to induce the fold line to form preferentially away from the bottom corner.

Abstract translation: 本发明旨在防止或最小化由突然撞击造成的纸板箱的变质。 这种恶化通常是由于一定高度的纸箱掉落造成的。 纸板箱的劣化类型通常是在角落中的一个突破。 当纸板箱受到冲击时，楔子受到的拉力在垂直引导线（12）的底部处引起撕裂，纸板折叠形成底部的拐角。 单侧定位线（21）形成在侧板（11）中和纸箱侧上。 每条标记线在限定纸板盒侧板的横向竖直标记线的两侧向外延伸。 这些准则的目的是促成折叠的形成，优选在引导线和所述垂直引导线的交叉处，并且远离盒子的底部的角落。 在硬纸板中，当纸板跌落或突然震惊时。 每条参考线必须相当长并且放置在离底壁一定距离处，以便形成优选与底角相对的引线。

公开(公告)号：WO1991006004A1

公开(公告)日：1991-05-02

申请号：PCT/US1990005186

申请日：1990-09-13

Applicant: WEYERHAEUSER COMPANY

Inventor： WEYERHAEUSER COMPANY ,  HALLEY, David, G. ,  GESS, Jerome, M.

IPC: G01N33/46

CPC classification number: G01N33/343 ,  G01N1/2035 ,  G01N2001/1025 ,  G01N2001/185 ,  G01N2001/2826

Abstract: The invention is an apparatus and method for measuring drainage time of a papermaking stock suspension (62). The apparatus will automatically measure drainage times of a plurality of samples which will preferably be of differing basis weights. It consists of a sheet mold reservoir (10) and dropleg (26) which index against or away from a table (12) having spaced apart sheet forming locations (14). Operation of the apparatus is determined by a programmable controller which causes stock to be automatically transferred to the sheet mold and the reservoir and dropleg to be automatically and appropriately positioned. After a sheet is formed, the table automatically indexes to the next forming position where the cycle is repeated. The method involves plotting a series of at least three points to determined the slope of drainage time versus the basis weight of the sheets formed. This can be used as an indicator of the drainage characteristics of a stock of given basis weight on the forming section of a paper machine.

公开(公告)号：WO1991001816A1

公开(公告)日：1991-02-21

申请号：PCT/US1990004423

申请日：1990-08-07

Applicant: WEYERHAEUSER COMPANY

Inventor： WEYERHAEUSER COMPANY ,  MARRS, Gevan, R.

IPC: B07B01/16

CPC classification number: B07B1/16 ,  B07B1/12 ,  D21B1/023

Abstract: A bar screen (10) for sizing wood chips which includes a plurality of parallel bars (12 - 12) supported at their respective ends (14, 16) in such a manner and driven in such a manner that each bar moves both longitudinally and vertically. Two alternating sets of bars (12 - 12) are included, one set being 180° removed in position relative to the other set. The speed and movement of the bars (12 - 12) is such that the wood chips are tipped up to a vertical orientation and supplied with such a momentum that the chips break contact with the bars and encounter a slot between adjacent bars in their thickness dimension.