Method and apparatus for detecting wavelength of laser beam
    2.
    发明授权
    Method and apparatus for detecting wavelength of laser beam 失效
    用于检测激光束波长的方法和装置

    公开(公告)号:US5319441A

    公开(公告)日:1994-06-07

    申请号:US114287

    申请日:1993-09-01

    CPC分类号: G01J9/0246 G01J2003/265

    摘要: A laser light, whose wavelength is to be measured, is introduced into an etalon, a concentric circular interference stripe derived from the etalon is irradiated onto a one-dimensional photodetector array and a diameter of the interference stripe is measured to measure the wavelength of the laser light. Alternatively, if a reference laser light of known wavelength is introduced into the etalon, as described above, a wavelength measurement of extremely high accuracy can be made without being affected by positional deviations of the optical system.

    摘要翻译: 将要测量其波长的激光引入标准具中,将衍生自标准具的同心圆形干涉条纹照射到一维光电检测器阵列上,并测量干涉条纹的直径以测量波长 激光灯。 或者,如果将已知波长的参考激光引入标准具,如上所述,可以在不受光学系统的位置偏差的影响的情况下进行极高精度的波长测量。

    Multilayered article, vessel and resin composition based on polyethylene
    7.
    发明授权
    Multilayered article, vessel and resin composition based on polyethylene 失效
    基于聚乙烯的多层制品,容器和树脂组合物

    公开(公告)号:US06214426B1

    公开(公告)日:2001-04-10

    申请号:US09064879

    申请日:1998-04-23

    IPC分类号: B32B2732

    摘要: A multilayered article and vessel, which are superior in the properties, such as shock resistance, rigidity, an ability to barrier against gasoline and interlayer adhesion, and are permissible of being recycled for reuse, comprising a base layer (A1) comprising a polyetylene resin (a1) having an MFR (ASTM D 1238, 190° C., 2160 g) of 0.001 to 0.5 g/10 min. and a density of 0.945 to 0.980 g/cm3, an adhesive layer (A2) comprising a modified etylene/&agr;-olefin copolymer (a2) which is modified by having grafted thereon an unsaturated carboxylic acid or its derivative and has a density of 0.900 to 0.940 and a barriering layer (B) comprising an ethylene/vinyl alcohol copolymer (b), wherein the Izod impact strength (with notch) (ASTM D 256, −40° C.) for a sheet specimen which is prepared by mechanically crushing the laminate into powder, granulating the resulting powder on a monoaxial extruder to form a resin composition and pressing the granular composition on a press molding machine into a sheet of 3 mm thickness at a temperature of 230° C. under a pressure of 50 kgf/cm2 with cooling under the condition defined by ASTM D 1928, is at least 100 J/m.

    摘要翻译: 具有优异性能的多层制品和容器,例如耐冲击性,刚性,阻挡汽油的能力和层间粘合性,并且是允许再循环使用的,包括:包含聚乙烯树脂的基层(A1) a1)具有0.001至0.5g / 10min的MFR(ASTM D 1238,190℃,2160g)。 和密度为0.945〜0.980g / cm3的粘合剂层(A2),其包含改性乙烯/α-烯烃共聚物(a2)的粘合剂层(A2),其通过在其上接枝不饱和羧酸或其衍生物并且具有0.900至 0.940和包含乙烯/乙烯醇共聚物(b)的阻塞层(B),其中用于通过机械破碎所得到的片材试样的悬臂梁式冲击强度(具有切口)(ASTM D 256,-40℃) 层压成粉末,将得到的粉末在单轴挤出机上造粒,形成树脂组合物,并将压制成型机上的粒状组合物在压力为50kgf / cm2的温度下在230℃的温度下压制成3mm厚的片材 在ASTM D 1928规定的条件下冷却至少为100J / m。

    Multilayered article, vessel and resin composition based on polyethylene
    9.
    发明授权
    Multilayered article, vessel and resin composition based on polyethylene 失效
    基于聚乙烯的多层制品,容器和树脂组合物

    公开(公告)号:US06777491B1

    公开(公告)日:2004-08-17

    申请号:US09637067

    申请日:2000-08-11

    IPC分类号: C08L2300

    摘要: A multilayered article and vessel, which are superior in the properties, such as shock resistance, rigidity, an ability to barrier against gasoline and interlayer adhesion, and are permissible of being recycled for reuse, comprising a base layer (A1) comprising a polyetylene resin (a1) having an MFR (ASTM D 1238, 190° C., 2160 g) of 0.001 to 0.5 g/10 min. and a density of 0.945 to 0.980 g/cm3, an adhesive layer (A2) comprising a modified etylene/&agr;-olefin copolymer (a2) which is modified by having grafted thereon an unsaturated carboxylic acid or its derivative and has a density of 0.900 to 0.940 and a barriering layer (B) comprising an ethylene/vinyl alcohol copolymer (b), wherein the Izod impact strength (with notch) (ASTM D 256, −40° C.) for a sheet specimen which is prepared by mechanically crushing the laminate into powder, granulating the resulting powder on a monoaxial extruder to form a resin composition and pressing the granular composition on a press molding machine into a sheet of 3 mm thickness at a temperature of 230° C. under a pressure of 50 kgf/cm2 with cooling under the condition defined by ASTM D 1928, is at least 100 J/m.

    摘要翻译: 具有优异性能的多层制品和容器,例如耐冲击性,刚性,阻挡汽油的能力和层间粘合性,并且是允许再循环使用的,包括:包含聚乙烯树脂的基层(A1) a1)具有0.001至0.5g / 10min的MFR(ASTM D 1238,190℃,2160g)。 和密度为0.945至0.980g / cm 3的粘合剂层(A2),包含改性的亚乙烯/α-烯烃共聚物(a2)的粘合剂层(A2),其通过在其上接枝不饱和羧酸或其衍生物并具有密度 为0.900〜0.940,以及包含乙烯/乙烯醇共聚物(b)的阻挡层(B),其中用于片材试样的悬臂梁式冲击强度(具有切口)(ASTM D 256,-40℃) 将层压体机械破碎成粉末,将所得粉末在单轴挤出机上造粒,形成树脂组合物,并将压制成型机上的粒状组合物在压力为50℃的压力下在230℃的温度下压制成3mm厚的片材 kgf / cm 2,在ASTM D1928规定的条件下冷却至少为100J / m。

    Pulse laser irradiation apparatus for coated metal material
    10.
    发明授权
    Pulse laser irradiation apparatus for coated metal material 失效
    用于涂覆金属材料的脉冲激光照射装置

    公开(公告)号:US5347528A

    公开(公告)日:1994-09-13

    申请号:US42516

    申请日:1993-04-05

    摘要: In order to obtain a weld bead having a good outer appearance with little splash of sputters or the like and a sufficient shearing force, there is provided a flash lamp control section for controlling flash lamps so as to generate two rectangular waves in a pulse wave form at every cycle of a pulse laser beam generated by a pulse YAG laser during the irradiation of the pulse laser beam on coated metal materials. The flash lamp control section is adapted to control a relationship between a peak power and a pulse width of a first rectangular wave and a peak power and a pulse width of a second rectangular wave in predetermined ranges. Under the control of the flash lamp control section, the pulse laser beam generated by the pulse YAG laser is irradiated to the coated metal materials thereby carry out the irradiating operation.

    摘要翻译: 为了获得具有良好的外观,喷溅等的飞溅性和足够的剪切力的焊道,设置有用于控制闪光灯的闪光灯控制部分,以便产生脉冲波形的两个矩形波 在脉冲激光束在涂覆的金属材料上照射期间由脉冲YAG激光器产生的脉冲激光束的每个周期。 闪光灯控制部适于控制预定范围内的第一矩形波的峰值功率和脉冲宽度与峰值功率和第二矩形波的脉冲宽度之间的关系。 在闪光灯控制部分的控制下,将由脉冲YAG激光器产生的脉冲激光束照射到涂覆的金属材料上,从而进行照射操作。