POLYUREA-REINFORCED FIBER-BASED MATERIALS
    51.
    发明申请
    POLYUREA-REINFORCED FIBER-BASED MATERIALS 审中-公开
    聚氨酯增强纤维材料

    公开(公告)号:WO1993007337A1

    公开(公告)日:1993-04-15

    申请号:PCT/US1992008236

    申请日:1992-09-28

    Abstract: Polyurea-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 polyurea-impregnated stratum. When the material has only one such stratum, the stratum has a thickness extending depthwise into the ply no greater than about half the ply thickness dimension. When the material has two such strata (one on each face), each stratum has a thickness no greater than about one-third the ply thickness dimension. In either case, a portion of the ply thickness dimension is unimpregnated. The material can comprise plural superposed plies, such as reinforced corrugated paperboard wherein at least one ply, such as the corrugated medium, has at least one polyurea-impregnated stratum. The present materials have, at a given compression strength, less brittleness (more foldability) than prior-art materials. The present materials are made by controllably applying a polyisocyanate resin to a fibrous web surface so as to prevent excess penetration of the resin into the web thickness dimension, then curing the resin. The materials are capable of being corrugated and folded after curing, and are useful for manufacturing cartons and other finished products.

    Abstract translation: 公开了聚脲增强纤维基材料及其制造方法。 代表性的材料是在一个或两个表面上具有聚脲浸渍层的片状层。 当材料仅具有一个这样的层时,层的厚度向深度方向延伸到层中不大于层厚度尺寸的大约一半。 当材料具有两个这样的层(每个面上一个)时,每个层的厚度不大于层厚度尺寸的大约三分之一。 在任一种情况下,一层厚度尺寸的一部分是未浸渍的。 该材料可以包括多个重叠的层,例如增强瓦楞纸板,其中至少一层,例如瓦楞介质,具有至少一个聚脲浸渍层。 本发明的材料在给定的压缩强度下具有比现有技术材料更少的脆性(更多的折叠性)。 本发明的材料是通过可控制地将多异氰酸酯树脂施加到纤维网表面上制成的,以防止树脂过度渗透到幅材厚度尺寸中,然后固化树脂。 这些材料在固化后能够被波纹化和折叠,并且可用于制造纸箱和其它成品。

    A METHOD OF PACKAGING PERISHABLE FOOD OR HORTICULTURAL PRODUCTS
    52.
    发明申请
    A METHOD OF PACKAGING PERISHABLE FOOD OR HORTICULTURAL PRODUCTS 审中-公开
    包装可食性食品或农业产品的方法

    公开(公告)号:WO1993004949A1

    公开(公告)日:1993-03-18

    申请号:PCT/US1992007538

    申请日:1992-09-02

    Abstract: An improved method is described for use in packaging a wide variety of products, and in particular perishable food and horticultural products (12). The products (12) are placed within a container (10) of the type which establishes a modified atmosphere environment therein and is cooled, as by heat transfert to a cooling element (14), which may involve the evaporation of liquid from a cooling collar (14) partially surrounding the container (10). The container (10) and cooling collar (14) may be subjected to vacuum cooling. The container (10) 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 (12), such as strawberries, is picked directly into the container (10) surrounded by the cooling collar (14) with the container (10) and cooling collars (14) being placed in an outer box (66) or other receptacle. The modified atmosphere package may be sealed and palletized prior to vacuum cooling.

    Abstract translation: 描述了一种改进的方法用于包装各种各样的产品,特别是易腐食品和园艺产品(12)。 产品(12)被放置在容器(10)中,该容器(10)在其中建立改变的气氛环境并被冷却,如通过传热到冷却元件(14),其可能涉及从冷却套筒 (14)部分地围绕容器(10)。 容器(10)和冷却套环(14)可以进行真空冷却。 容器(10)可以包括在真空施加期间增强主体气体传输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,其中诸如草莓的产品(12)直接被容器(10)包围的容器(10)中,容器(10)和冷却套环(14)被包围 放置在外箱(66)或其他容器中。 改性气氛包装可以在真空冷却之前被密封和堆垛。

    INTEGRATED SCREENING SYSTEM FOR SIZING WOOD CHIPS
    56.
    发明申请
    INTEGRATED SCREENING SYSTEM FOR SIZING WOOD CHIPS 审中-公开
    综合筛选系统

    公开(公告)号:WO1991012902A1

    公开(公告)日:1991-09-05

    申请号:PCT/US1991001159

    申请日:1991-02-22

    CPC classification number: B07B1/46 B07B1/15 B07B9/00 D21B1/023

    Abstract: A wood chip screen system which includes a gyratory screen apparatus (10) and a disk screen (12). The gyratory system apparatus includes a top screen element (14) and a lower screen (16). The inflow end of the disk screen (12) is immediately adjacent the outflow end of the top screen element (14), while the lower screen element (16) underlies the disk screen (12) for a substantial distance. The size of the openings in the top screen element (14) may be changed by the operator to optimize the operation of the system. The openings in top screen element (14) may also vary along its length. The system produces chips within the acceptable size range, chips which are below the acceptable size range (pin chips and fines), and over-thick chips, which are subsequently typically transmitted to a chip size reduction apparatus such as a slicer.

    LAMINATED WOOD PRODUCT
    58.
    发明申请
    LAMINATED WOOD PRODUCT 审中-公开
    层压木制品

    公开(公告)号:WO1991001878A1

    公开(公告)日:1991-02-21

    申请号:PCT/US1990004260

    申请日:1990-07-30

    Abstract: The invention is a laminated wood product having superior appearance and dimensional stability. It has a core member of common lumber. This core member has been relieved in one of a number of ways to reduce or eliminate warping induced by internal stresses. Preferably this is accomplished by making kerfs (12, 14, 16, 18) in the edges or in the faces which extend almost completely through the product. Sheets of patched or otherwise relatively defect-free veneer (10) are then laminated to each face of the core member. These prevent telegraphing of core defects of kerfs. A piece (6) of clear or otherwise acceptable appearance grade lumber is then laminated to each edge of the product. Ultimately, appearance grade veneer is laminated to each face to create an assembly giving the appearance and utility of clear, solid sawn wood.

    THERMALLY RESISTANT CONTAINER AND THE MATERIAL FOR MAKING IT
    60.
    发明申请
    THERMALLY RESISTANT CONTAINER AND THE MATERIAL FOR MAKING IT 审中-公开
    耐热容器及其制作材料

    公开(公告)号:WO1990013708A1

    公开(公告)日:1990-11-15

    申请号:PCT/US1990001858

    申请日:1990-04-05

    Abstract: An insulating board (110) having at least one ply (113) containing an expanded light weight resilient particulate filler material (115) evenly dispersed throughout its structure can be manufactured by forming that ply from a slurry having 2 to 5 percent pulp fibers based on the total weight of the slurry. The filler material is dispersed throughout the slurry for that ply prior to forming the slurry into a web for that ply. It can be formed with additional plies of standard normal density fiber material. The board can be formed into cups (150), plates (170) or containers (160) for holding food or beverages.

    Abstract translation: 具有至少一层包含均匀分散在其整个结构中的膨胀轻质弹性颗粒填料(115)的层(113)的绝缘板(110)可以通过从具有2-5%纸浆纤维的浆料形成基于 浆料的总重量。 在将浆料形成用于该层的纤维网之前,将填料分散在该层的整个浆料中。 它可以用额外的标准正常密度纤维材料制成。 板可以形成用于容纳食物或饮料的杯子(150),板(170)或容器(160)。

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