聚对苯二甲酸乙二醇酯(PET)具有优良的物理化学性能,其耐弯折性好、应用成本低廉,是柔性电子产品的重要目标基材之一,但其同时存在表面能低、粗糙度小、表面难以金属化且金属层与基材的附着力不佳的问题。提出了一种可靠且低成本的PET...聚对苯二甲酸乙二醇酯(PET)具有优良的物理化学性能,其耐弯折性好、应用成本低廉,是柔性电子产品的重要目标基材之一,但其同时存在表面能低、粗糙度小、表面难以金属化且金属层与基材的附着力不佳的问题。提出了一种可靠且低成本的PET基射频识别(Radio Frequency Identification,RFID)标签天线的卷对卷柔版印刷制备工艺。该技术以PET作为RFID标签天线的基材,以柔版印刷作为印刷技术,通过紫外固化技术对印制天线图案进行固化干燥,并采用化学沉积法制备RFID标签天线的金属层,具有工业化生产前景。通过扫描电子显微镜、X射线衍射与附着力测试证明了基材表面的金属层具有致密、结晶度高、附着力良好的优点,所得天线的电阻率低(2.98μΩ·cm)且机械性能良好(4000次弯曲)。展开更多
Modern high speed printing machines are able to print up to 700 m/min. At this rate, little excita-tions lead to vibrations, which may lead to loss of contact between the rollers (bouncing). This bouncing results in w...Modern high speed printing machines are able to print up to 700 m/min. At this rate, little excita-tions lead to vibrations, which may lead to loss of contact between the rollers (bouncing). This bouncing results in white stripes, being visible on the printed image. To enable the simulation of the whole printing process, including effects like bouncing, a discrete multibody model is developed. The rollers are modeled by several rigid bodies. These bodies are connected to each other by rotational springs, which allow simulation of the first bending eigenmodes of each roller. The contact area between the rollers is modeled by several nonlinear translational springs and damping elements. These elements change their stiffness and damping values depending on the distance between the rollers. If a defined distance is exceeded, the values become zero, which represents the loss of contact (bouncing). The unknown spring and damping elements of this model are parametrized with help of an experimental modal analysis. This paper presents the development of a flexible multibody model to simulate nonlinear effects in printing process.展开更多
The realization of color conversions in accordance with the ICC technology is the basis of quality management in modern desktop publishing systems.An important point is that the result depends on the specific technolo...The realization of color conversions in accordance with the ICC technology is the basis of quality management in modern desktop publishing systems.An important point is that the result depends on the specific technological process,therefore the fine adjustment of the control systemis required.For such a multi-step process as flexographic printing展开更多
文摘聚对苯二甲酸乙二醇酯(PET)具有优良的物理化学性能,其耐弯折性好、应用成本低廉,是柔性电子产品的重要目标基材之一,但其同时存在表面能低、粗糙度小、表面难以金属化且金属层与基材的附着力不佳的问题。提出了一种可靠且低成本的PET基射频识别(Radio Frequency Identification,RFID)标签天线的卷对卷柔版印刷制备工艺。该技术以PET作为RFID标签天线的基材,以柔版印刷作为印刷技术,通过紫外固化技术对印制天线图案进行固化干燥,并采用化学沉积法制备RFID标签天线的金属层,具有工业化生产前景。通过扫描电子显微镜、X射线衍射与附着力测试证明了基材表面的金属层具有致密、结晶度高、附着力良好的优点,所得天线的电阻率低(2.98μΩ·cm)且机械性能良好(4000次弯曲)。
文摘Modern high speed printing machines are able to print up to 700 m/min. At this rate, little excita-tions lead to vibrations, which may lead to loss of contact between the rollers (bouncing). This bouncing results in white stripes, being visible on the printed image. To enable the simulation of the whole printing process, including effects like bouncing, a discrete multibody model is developed. The rollers are modeled by several rigid bodies. These bodies are connected to each other by rotational springs, which allow simulation of the first bending eigenmodes of each roller. The contact area between the rollers is modeled by several nonlinear translational springs and damping elements. These elements change their stiffness and damping values depending on the distance between the rollers. If a defined distance is exceeded, the values become zero, which represents the loss of contact (bouncing). The unknown spring and damping elements of this model are parametrized with help of an experimental modal analysis. This paper presents the development of a flexible multibody model to simulate nonlinear effects in printing process.
文摘The realization of color conversions in accordance with the ICC technology is the basis of quality management in modern desktop publishing systems.An important point is that the result depends on the specific technological process,therefore the fine adjustment of the control systemis required.For such a multi-step process as flexographic printing
