High strength laminated veneer lumber
    1.
    发明授权
    High strength laminated veneer lumber 失效
    高强度层压单板木材

    公开(公告)号:US5234747A

    公开(公告)日:1993-08-10

    申请号:US652637

    申请日:1991-02-08

    摘要: A laminated veneer lumber product utilizes low density veneers and is able to provide an edge stiffness value or MOE of at least 2,000,000 psi. This is the same strength as attained with high density veneers. The product has adjacent surface layers formed of low density incised veneer sheets having a moisture content of at least about 6% or adjacent surface layers formed of low density incised veneer sheets impregnated with phenolic resin and dried to a moisture content not exceeding about 5%. The surface layers are positioned on both sides of adjacent core layers which are either formed of high density veneer sheets or are formed of low density incised veneer sheets impregnated with a phenolic resin and dried to a moisture content not exceeding about 5%. The surface layers of low density incised veneer sheets having a moisture content of at least about 6% are densified against the core layers by at least about 5%.

    摘要翻译: 层压单板木材产品采用低密度单板,能够提供至少2,000,000 psi的边缘刚度值或MOE。 这与用高密度胶合板达到的强度相同。 该产品具有由具有至少约6%的水分含量的低密度切割薄板片形成的相邻表面层或由浸渍有酚醛树脂的低密度切割单板片形成的相邻表面层,并干燥至不超过约5%的含水量。 表面层位于相邻芯层的两侧,其由高密度单板形成,或由浸渍有酚醛树脂的低密度切割单板形成并干燥至不超过约5%的水分含量。 具有至少约6%水分含量的低密度切割单板的表面层相对核心层致密化至少约5%。

    Controlled steam drying of veneer sheets
    2.
    发明授权
    Controlled steam drying of veneer sheets 失效
    胶合板的控制蒸汽干燥

    公开(公告)号:US4945652A

    公开(公告)日:1990-08-07

    申请号:US340077

    申请日:1989-04-18

    IPC分类号: F26B3/20 F26B7/00 F26B25/22

    摘要: A system of drying veneer sheets for manufacturing wood products such as plywood, measures the moisture content of the sheets and controls drying to a predetermined moisture content. By drying veneer sheets to the predetermined moisture content, avoids excessive drying to ensure all sheets are below the 11% moisture content level. A process of drying comprises incising a veneer sheet, sensing the moisture content of the incised veneer sheet, steam drying the sheet under pressure and controlling the drying based on the sensed moisture content of the veneer sheet, to dry the sheet to the predetermined moisture content.

    摘要翻译: 一种用于制造诸如胶合板的木制品的单板的干燥系统,测量片材的水分含量并控制干燥至预定的水分含量。 通过将胶合板干燥至预定的水分含量,避免过度干燥以确保所有的纸张都低于11%的含水量。 干燥过程包括切割单板,感测切割的薄板片材的水分含量,在压力下蒸汽干燥薄片并基于感测到的薄板片材的含水量控制干燥,将片材干燥至预定的水分含量 。

    Method and apparatus for rapidly determining the moisture content of a
substance
    3.
    发明授权
    Method and apparatus for rapidly determining the moisture content of a substance 失效
    快速测定物质含水量的方法和装置

    公开(公告)号:US4612802A

    公开(公告)日:1986-09-23

    申请号:US679313

    申请日:1984-12-07

    CPC分类号: G01N25/56 G01N33/46

    摘要: A method and apparatus for rapidly determining the moisture content of a substance. An area of one surface only of the substance is subjected to a predetermined intensity of radiant energy for a selected period of time and the temperature rise is measured. The rise in the surface temperature of the substance such as pieces of wood, is approximately inversely proportional to the moisture content of the wood and thus is easily determined. This is obtainable by transporting the substance on a fixed speed conveyor past a heat source, variations in the rise and fall in the surface temperature readings immediately following the application of heat are representative of its moisture content; low readings indicating high moisture content while high readings being indicative of low moisture content.

    摘要翻译: 一种快速测定物质含水量的方法和装置。 物质的一个表面的区域在预定的时间段内经受预定的辐射能强度,并且测量温度升高。 物质如木材的表面温度的升高与木材的含水量大致成反比,因此容易确定。 这是通过将物质运送在固定速度传送带上通过热源获得的,在施加热量之后,表面温度读数的上升和下降的变化代表其水分含量; 低读数显示高含水量,而高读数则表示低含水量。