How To Choose The Angle And Tension Of The Screen When Screen Printing

- Jan 24, 2018-

The angle of the bandage is the angle between the warp of the silk screen, the weft line (silk) and the edge of the screen frame. There are two forms of the bandage screen, one is a normal bandage screen,the other is a skew bandage screen. The following two methods of the bandage are described respectively.

    正绷网,是丝网的经、纬线分别平行和垂直于网框的四个边。即经、纬线与网框边呈90度。

Is stretching, is the screen of the warp and weft are parallel and perpendicular to the four edges of the screen frame. That is, the meridian, the weft line and the net frame are 90 degrees.

    斜交绷网,是指丝网的经、纬线分别与网框四边呈一定的角度。采用正绷网形式绷网,操作比较方便,由于能够充分利用丝网,可节省丝网的边角料,减少丝网浪费。但是,在套

Skew the tension and the network refers to the screen of the warp and weft are screen frame with four was a certain angle. It is convenient to use the normal bandage silk screen form, and it is convenient to operate. Because of the ability to make full use of silk screen, it can save the corner material of silk screen and reduce the waste of silk screen. But, in the sleeve

    印刷时采用这种形式绷网制版容易出现龟纹,所以套色印刷一般不采用正绷网。采用斜交绷网利于提高印刷质量,对增加漏墨量也有一定效果。其不足是丝网浪费较大。在印刷精度要求比较高和彩色印刷中,绷网角度的选择对印刷质量有直接的影响,绷网角度选择不适合,就会出现龟纹。所以,一般复制品的印刷,常适用的绷网角度是20度一35度,在印制高分辨率的线路板时,由于使用的丝网目数较高,所以绷网角度选择45度比较合适。在实际绷网时,为了减少丝网浪费,一般复制印刷品多采用正绷网。

Printing using this form of stretching plate prone moire, so color printing is generally not used is stretching. The use of oblique cross bandage net is beneficial to improve the printing quality, and it also has some effect on increasing the amount of ink leakage. The shortage is that the silk screen is wasteful. In high precision printing and color printing, stretching angle has a direct influence on the printing quality, stretching angle is not suitable, there will be a moire. So, general copy printing, often with stretching angle is 20 degrees to 35 degrees, in the printed circuit board with high resolution, due to the use of the screen mesh is higher, so the stretching angle 45 degrees more appropriate. In the actual bandage network, in order to reduce the waste of silk screen, the general copy of print is usually used as a normal bandage.

    丝网印刷精度与丝网印版的精度有关,而丝网张力是影响丝网印版质量的重要因素之一。丝网张力与网框的材质及强度、丝网的树质、温度、湿度、绷网方法等有关。通常在手工绷网和没有张力仪的情况下,张力确定主要凭经验而定,绷网时一边将丝网拉伸、一边用手指弹压丝网,一般用手指压丝网,感觉到丝网有一定弹性就可以了。在使用绷网机以及大网框绷网时,一般都使用张力仪测试丝网张力。

The precision screen printing and screen printing precision, while the screen tension is one of the important factors influencing the quality of screen printing. Material and strength, silk screen tension and net frame of the prime, temperature and humidity, stretching method and so on. Usually in the manual stretching and no tension tester under tension to determine the main experience and decide, the tension and the network side of the screen, while stretching fingers press the screen, the general finger pressure screen, feel the screen has certain elasticity can be. In the use of the bandage machine and the large net frame bandage net, the tension instrument is generally used to test the wire mesh tension.

    在使用绷网机绷网时,由于绷网夹头的移动(松紧调试)是通过气压表来控制实现的,所以不同质地的丝网,其绷网的气压值不同。通常绢网的绷网气压值是7-9kg/cm2;尼龙丝网的绷网气压值是8--10kg/cm2;涤纶丝网的绷网气压值是8--10kg/cm2;不锈钢丝网的绷网气压值是10--13kg/cm2。

In the use of the tension and the machine tension and the network, the mobile screen chuck (elastic debugging) by pressure meter to control the realization, so different screen, the screen of the pressure value of different. Usually a stretch mesh pressure value is 7-9kg/cm2; the nylon mesh stretching pressure value is 8--10kg/cm2; polyester mesh stretch mesh pressure value is 8--10kg/cm2; stainless steel wire mesh stretching pressure value is 10--13kg/cm2.

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