METHOD AND DEVICE FOR PRODUCING A STRUCTURED SURFACE ON A STEEL EMBOSSING ROLLER
    5.
    发明申请
    METHOD AND DEVICE FOR PRODUCING A STRUCTURED SURFACE ON A STEEL EMBOSSING ROLLER 审中-公开
    用于在钢制滚筒上生产结构化表面的方法和装置

    公开(公告)号:US20140217058A1

    公开(公告)日:2014-08-07

    申请号:US14346578

    申请日:2012-09-12

    Abstract: The method for structuring the surface of a steel embossing roller by means of short pulse laser, where the structuring is a macrostructuring with dimensions of over 20 μm and depths up to 150 μm and more, distinguishes itself by the following parameter combination: a) in single pulse operation a fluence in the range of 0.5 J/cm2 to 3.5 J/cm2 and in burst operation a mean burst fluence of 0.5 J/cm2 to 70 J/cm2 per pulse, b) wavelength of 532 nm to 1064 nm, c) repetition rate of 1 kHz to 10 MHz, d) pulse to pulse spacing on the workpiece of 10% to 50% of the beam diameter for the femtosecond laser and of 10-25% and 40-50% of the beam width for the picosecond laser, e) laser pulse position near the workpiece surface, and f) deflection velocities of up to 100 m/s and more. ***Such a method allow manufacturing a complete embossing roller with teeth and gaps for producing logos, the teeth having variable heights, shapes, and spacings, for embossing e.g. innerliners for cigarette packaging.

    Abstract translation: 通过短脉冲激光器构造钢压花辊表面的方法,其结构是尺寸超过20μm,深度达150μm以上的宏观结构,通过以下参数组合区分:a) 单脉冲操作在0.5J / cm 2至3.5J / cm 2的范围内的通量,并且在脉冲操作中,每脉冲的平均脉冲通量为0.5J / cm 2至70J / cm 2,b)532nm至1064nm的波长,c )重复率为1 kHz至10 MHz,d)工件上的脉冲间隔为飞秒激光束的光束直径的10%至5​​0%,对于波长为10-25%和40-50%的光束宽度 皮秒激光,e)工件表面附近的激光脉冲位置,以及f)高达100m / s以上的偏转速度。 ***这种方法允许制造具有齿和间隙的完整压花辊,用于产生标识,齿具有可变的高度,形状和间距,用于压花例如。 卷烟包装内衬。

    METHOD AND DEVICE FOR STRUCTURING THE SURFACE OF A HARD MATERIAL COATED SOLID BODY BY MEANS OF A LASER
    6.
    发明申请
    METHOD AND DEVICE FOR STRUCTURING THE SURFACE OF A HARD MATERIAL COATED SOLID BODY BY MEANS OF A LASER 有权
    用于通过激光来结构硬质材料涂层固体的表面的方法和装置

    公开(公告)号:US20120012594A1

    公开(公告)日:2012-01-19

    申请号:US13260167

    申请日:2009-03-18

    Abstract: In the method for structuring at least one area of a solid body surface provided with a ta-C coating, a mask in the homogenous spot of the optical system is used in order to shape the beam in the mask projection technique and then a diaphragm in front of the imaging optics. A structure is applied by means of an excimer laser having pulse durations in the nanosecond range, a number of mask and diaphragm combinations being arranged in a exchanger device and the exchanger device being adapted to place both one of the masks and one of the diaphragms in the beam path of the laser independently of each other, the masks and diaphragms being arranged in holders while being displaceable linearly or rotatively and rotatable about themselves. This method allows the rational manufacture of very complex, extremely fraud-resistant authentication features and/or of esthetically attractive, optical diffraction effective colored patterns.

    Abstract translation: 在用于构造设置有ta-C涂层的固体表面的至少一个区域的方法中,使用光学系统的均匀光斑中的掩模,以便在掩模投影技术中形成光束,然后将光阑 成像光学器件前面。 通过具有在纳秒范围内的脉冲持续时间的准分子激光器施加结构,多个掩模和隔膜组合布置在交换器装置中,并且交换器装置适于将两个掩模和其中一个隔膜放置在 激光束的光束路径彼此独立,掩模和隔膜被布置在保持器中,同时可以自身线性地或可旋转地和可旋转地移动。 该方法允许合理地制造非常复杂,极具欺诈性的认证特征和/或具有美学吸引力的光衍射有效彩色图案。

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