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    • 3. 发明授权
    • Phenol formaldehyde adhesive for bonding wood pieces of high moisture
content and composite board and veneers bonded with such adhesive
    • 苯酚甲醛粘合剂,用于粘合高含水量的木片和复合板以及用这种粘合剂粘结的单板
    • US4824896A
    • 1989-04-25
    • US165929
    • 1988-03-09
    • Michael R. ClarkePaul R. SteinerAxel W. Anderson
    • Michael R. ClarkePaul R. SteinerAxel W. Anderson
    • B27D1/04C09J161/04C08L61/00C08K3/38
    • B27D1/04C09J161/04
    • Disclosed is an improved phenol formaldehyde (PF) resin that does not require fillers or extenders and is capable of bonding wafers or veneers having a moisture content of 10% or above. In the case of veneers exceptional results are obtained when the permeability of the veneer is increased by incising.The adhesive composition is prepared by mixing together a caustic solution of a high molecular weight PF resin, a dispersion of PF resin which is characterized in that it can swell in aqueous caustic medium but not go into solution, and a chemical which is capable of reacting with resins in both the continuous and the disperse phase, such as alkylene carbonates or phenol resorcinol formaldehyde (PRF) resins. Optionally, a component may be used such as borax which is capable of complexing with resins in the continuous and the disperse phase. The disperse phase is made by converting a solution of a PF resin into a fine particle size particulate form by precipitation, spray drying or freeze drying and partially cross-linking the resin during or subsequent to the formation of the fine particle size dispersion. The PF resin is partially cross-linked by (a) heat, by (b) acid catalysis, or by (c) a reaction with cross-linking chemicals such as cyclic carbonates or epoxy compounds or by a combination of (a) (b) and (c).The disperse phase may be made from a PF resin or from a resin in which some of the phenol has been replaced by other phenolic chemicals such as resorcinol, catechol, or kraft lignin. The chemical capable of reacting with resins in the continuous and the disperse phase may be a cyclic carbonate or a phenol resorcinol resin.Also disclosed is a wood product produced from veneers having moisture contents at 10% or above and incised to improve their permeability to gases and liquids.
    • 5. 发明授权
    • Veneer lathes having veneer thickness sensor and thickness control
    • 单板车床具有贴面厚度传感器和厚度控制
    • US4791970A
    • 1988-12-20
    • US130093
    • 1987-12-07
    • Donald C. WalserMichael R. Clarke
    • Donald C. WalserMichael R. Clarke
    • B26D3/28B26D7/26B27L5/02B27B1/00
    • B26D7/2628B26D3/28B27L5/022
    • A wood veneer lathe that includes a sensor carried by the nose bar and co-acting with the peeling knife to detect and provide an output signal in response to and proportioned to deviations from a predetermined spacing of the nose bar and knife relative to one another. The sensor is located downstream from the point of contact of the nose bar with the block at a position opposite a flate face of the knife and adjacent the latters cutting edge. A particular veneer lathe is disclosed that includes electrohydraulic linear actuators with feedback control means for adjustably positioning the peeling knife. Signals from the sensor, detecting deviations of the peeling knife from its fixed setting, are analyzed by a computer and the latter controls actuators to make suitable knife position adjustments to control the veneer thickness.
    • 一种木材单板车床,其包括由鼻杆承载并与剥皮刀共同作用的传感器,以响应于鼻梁和刀相对于彼此的预定间隔的偏差并且与之成比例地检测并提供输出信号。 传感器位于与杆的接触点的下游,与刀块的与刀片的平面相对的位置处,与刀片的切削刃相邻。 公开了一种特定的单板车床,其包括具有用于可调整地定位剥皮刀的反馈控制装置的电动液压线性致动器。 传感器的信号,通过计算机分析检测剥离刀与其固定设置的偏差,后者控制致动器进行适当的刀位调节,以控制胶合板的厚度。
    • 7. 发明授权
    • Aqueous compositions for lumber treatment
    • 用于木材处理的水性组合物
    • US3945834A
    • 1976-03-23
    • US356355
    • 1973-05-02
    • Michael R. ClarkeRaman Desai
    • Michael R. ClarkeRaman Desai
    • B27K3/32B27K3/52C09D5/14
    • A01N59/16B05D2203/20B05D3/104B27K3/20B27K3/22B27K3/52
    • A wood treating composition is provided, comprising an aqueous solution containing (a) a specified amount of a water insoluble zine compound, namely zinc carbonate, zinc oxide or zinc thiocyanate; (b) one of (i) a specified amount of ammonium thiocyanate, or (ii) a specified amount of ammonium carbonate, or (iii) a specified amount of both ammonium thiocyanate and ammonium carbonate; and (c) a specified amount of a zinc compound solubilizing amount of ammonia, the composition having a pH of 9 or more. The components may be provided by dissolving ZnO in an aqueous ammonia solution containing carbonate ions, or by dissolving zinc carbonate in an aqueous ammonia, or by means of an aqueous ammoniacal solution of Zn(CNS).sub.2. The composition may also include one or more of the following: (a) cupric ammonium ions, (b) a vinyl polymer latex, (c) optionally, an acidic organic surfactant compound which is soluble in said ammnoiacal salt solution, or (d) an additional fungicidal agent.
    • 提供木材处理组合物,其包含含有(a)规定量的水不溶性锌化合物的水溶液,即碳酸锌,氧化锌或硫氰酸锌; (b)(i)规定量的硫氰酸铵,或(ii)规定量的碳酸铵,或(iii)规定量的硫氰酸铵和碳酸铵之一; 和(c)规定量的锌化合物增溶量的氨,该组合物的pH为9以上。 可以通过将ZnO溶解在含有碳酸根离子的氨水溶液中或通过将碳酸锌溶解在氨水中或通过Zn(CNS)2的氨水溶液来提供。 该组合物还可以包括以下一种或多种:(a)二价铵离子,(b)乙烯基聚合物胶乳,(c)任选的可溶于所述氨基酸盐溶液的酸性有机表面活性剂化合物,或(d) 一种额外的杀真菌剂。
    • 8. 发明授权
    • Phenol formaldehyde adhesive for bonding wood pieces of high moisture
content and composite board and veneers bonded with such adhesive
    • 苯酚甲醛粘合剂,用于粘合高含水量的木片和复合板以及用这种粘合剂粘结的单板
    • US4897314A
    • 1990-01-30
    • US309558
    • 1989-02-13
    • Michael R. ClarkePaul R. SteinerAxel W. Anderson
    • Michael R. ClarkePaul R. SteinerAxel W. Anderson
    • B27D1/04C09J161/04
    • C09J161/04B27D1/04Y10T428/3196
    • An improved phenol formaldehyde resin not requiring fillers or extenders and capable of bonding wafers or veneers having a moisture content of 10% or above is disclosed. The adhesive composition is prepared by mixing together a caustic solution of a high molecular weight PF resin, a dispersion of PF resin which is characterized in that it can swell in aqueous caustic medium but not go into solution, and alkylene carbonates or phenol resorcinol formaldehyde resins. Optionally, borax is utilized. The disperse phase is made by converting a solution of PF resin into a fine particle size particulate form by precipitation, spray drying or freeze drying, and partially cross-linking the resin during or subsequent to the formation of the fine particle size dispersion. The PF resin is partially cross-linked by (a) heat, by (b) acid catalysis, or by (c) a reaction with cross-linking chemicals. Also disclosed is a wood product produced from veneers having moisture contents of 10% or above and incised to improve their permeability to gases and liquids.
    • 公开了一种改进的不需要填料或增量剂并能够粘结水分含量为10%或以上的薄片或单板的酚醛树脂。 粘合剂组合物通过将高分子量PF树脂的苛性碱,PF树脂的分散体混合在一起来制备,其特征在于它可以在苛性碱水溶液中溶胀而不进入溶液,碳酸亚烷基酯或苯酚间苯二酚甲醛树脂 。 任选地,使用硼砂。 通过在形成细粒度分散体期间或之后通过沉淀,喷雾干燥或冷冻干燥将PF树脂的溶液转化成细粒度的颗粒形式,并部分地交联树脂来制备分散相。 PF树脂通过(a)加热,(b)酸催化或(c)与交联化学品的反应部分交联。 还公开了由具有10%或更高水分含量的薄板制成的木制品,并且切割以提高其对气体和液体的渗透性。
    • 9. 发明授权
    • Wood tenderizing apparatus and method
    • 木嫩化装置及方法
    • US4790360A
    • 1988-12-13
    • US112297
    • 1987-10-26
    • Michael R. ClarkeDonald C. Walser
    • Michael R. ClarkeDonald C. Walser
    • B27B25/02B27D1/00B27L5/02B27M1/00B27L5/00B27M1/02
    • B27M1/006B27B25/02B27D1/005B27L5/025
    • A wood incising roller where the teeth are formed by grooves in the roller surface and where some of such grooves cross others. Each cutting tooth has a knife-like cutting edge of finite length that is in one instance perpendicular to the axis of rotation of the roller and in another instance parallel to such axis. The grooves can be formed by machine cutting, either turning or grinding or by being molded in the surface and then shaped by a grinding operation. At least some grooves preferrably spiral about the roller. The pattern of cutting teeth and shape are determined by such variable parameters as pitch, number of thread starts, angle of cutter, depth of cut and lead angle. An incisor for lumber or veneer consists of two rollers at least one of which is as described in the forgoing. The grooves can be filled or partially filled with an elastic compressible material. The incising roller of the foregoing also is used in combination with a veneer lathe.
    • 一种木材切割辊,其中齿由辊表面中的凹槽形成,并且其中一些这样的沟槽与其他的沟槽交叉。 每个切割齿具有有限长度的刀形切割边缘,其在一个实例中垂直于滚子的旋转轴线,并且在另一个实例中平行于该轴线。 槽可以通过机械切割,转动或研磨,或通过模制在表面中,然后通过研磨操作成形而形成。 至少一些槽优选地围绕辊螺旋。 切割牙齿和形状的图案由螺距,螺纹开始次数,刀具角度,切削深度和导程角等可变参数决定。 木材或单板的门牙由两个辊组成,其中至少一个如上述所述。 凹槽可以用弹性可压缩材料填充或部分填充。 上述的切割辊也与单板车床结合使用。