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薄紙印刷出現"皺"的問題要如何解決?
作者:admin 來源:http://fashionalized.com 發布時間:2019-6-25 16:43:49 瀏覽次數:402
目前,國內引進的百余臺機組式柔印機中,只要一小局部用于印刷不干膠資料,大局部柔印機印刷的產品都是薄紙類印品。簡直一切印刷過薄紙的用戶都反映會遇到一系列問題,這些問題能夠用以下幾個字來概括,即“皺”、“縮”、“翹”、“靜電”及“斷紙”。下面,濟南宣傳單頁印刷廠家將對薄紙印刷呈現"皺"的問題產生的緣由及處理辦法進行細致討論。
At present, as long as a small part of the more than 100 set flexo printers imported in China are used for printing non-adhesive materials, most of the products printed by flexo printers are thin paper. Almost all users who have printed thin paper report that they will encounter a series of problems, which can be summarized in the following words: wrinkle, shrink, warp, static electricity and paper breakage. Next, Jinan Publicity sheet printing manufacturers will give a detailed discussion on the causes and treatment of the problem of "wrinkles" in thin paper printing.
1.毛病緣由:張力過大
1. Cause of trouble: excessive tension
普通情形是機器某一部分張力過大,則在該區域產生褶皺,并影響后面的局部。比方:有時開卷張力設置過大,就在開卷局部產生褶皺,而且越到后面起皺越嚴重,以至斷紙。有的用戶原來訂購的柔印機是厚紙型,一旦用來印刷薄紙,很容易起皺,這時褶皺普通是發作在柔印機的中后部。
In general, if the tension of a part of the machine is too large, it will produce folds in the area and affect the later part. For example: Sometimes when the tension setting is too large, wrinkles will occur in the part of the uncoiling, and the more serious the wrinkles will become in the back, even the paper will be broken. Some users originally ordered the flexo press is thick paper, once used to print thin paper, it is easy to wrinkle, then the wrinkles usually occur in the middle and back of the flexo press.
處理辦法——經過降低各局部的張力設定值能處理此問題,但更基本的處理辦法是增購一套合適印刷薄紙的輥子,包括壓印滾筒及進紙、出紙張力輥等。
Solutions - This problem can be solved by reducing the tension settings of each part, but the most basic solution is to buy an additional set of rolls suitable for printing thin paper, including press rollers, paper feeding rolls, paper feeding rolls, etc.
2.毛病緣由:糾偏安裝的偏轉角渡過大
2. Cause of the defect: too large deflection angle of rectification installation
紙張在糾偏安裝處的張力情況是一側緊、另一側松,因而容易產生褶皺。若是開卷局部,則會在進紙張力輥上發現有"樹皮"皺的現象,當然是在紙張較松的一側。
The tension of the paper at the deviation correction installation is tight on one side and loose on the other, so it is easy to crease. If the uncoiling part is partial, the phenomenon of "bark" wrinkles will be found on the roll in the paper, of course, on the loose side of the paper.

處理辦法——讓糾偏"本人擺正"(按Servo-Center鍵),慢車走一段紙,調整好適宜的紙張橫向位置并穩定下來后,停車,再調整糾偏安裝的電眼,使其與當前需監控的紙邊位置對正,這時將糾偏系統轉換到"自動"狀態工作。這樣做就能夠使糾偏安裝在"自動"工作過程中偏轉的角度更小,使發作褶皺的可能性降到更小。而這時要將紙卷的橫向位置做一明顯的記號,換下一卷紙的時分一定要將位置對正。

濟南宣傳發單頁印刷

How to deal with this problem - let the corrector "put himself right" (press the Servo-Center key), take a piece of paper slowly, adjust the suitable paper transverse position and stabilize it, stop, and then adjust the corrector installed eye to align it with the current paper edge position to be monitored. At this time, the correcting system will be transformed to the "automatic" state. By doing so, the deflection angle of the correcting device during the "automatic" operation can be minimized, and the possibility of occurrence of folds can be minimized. At this time, the horizontal position of the paper roll should be marked clearly. When changing the next roll of paper, the position must be corrected.
3.毛病緣由:壓印滾筒式導紙輥外表有異物(如大的干墨塊)或凹痕;個別輥子的平行度超差等等。
3. Causes of the defects: foreign bodies (such as large dry ink blocks) or dents on the exterior of the impression roller type paper guide roll; excessive parallelism of individual rolls, etc.
處理方法——除了調整張力和檢查機器以外,必要時還能夠在該處的導紙輥外表距兩個紙邊約15毫米的內側各纏兩層電工膠帶,以避免紙張向內的橫向挪動。也能夠采用帶螺旋線的導紙輥,使薄紙向外伸展。但當薄紙的挺度太小且張力相對偏大時,反而會因螺旋線而起皺,因而要詳細問題詳細剖析。
Processing method - In addition to adjusting the tension and checking the machine, it can also wrap two layers of electrical tape on the inner side of the guide roll about 15 mm away from the two edges of the paper when necessary to avoid the paper moving inward horizontally. The paper guide roller with helix can also be used to make the paper stretch outward. However, when the stiffness of thin paper is too small and the tension is relatively large, it will wrinkle because of the spiral line, so we need to analyze the problem in detail.
此外,在用薄紙印刷時,原紙卷去掉包裝后,靠近外包裝外表的紙會吸收空氣中的水分而呈現褶皺,當外層起皺的紙走進機器時,肯定會產生問題。
In addition, when printed on thin paper, the paper near the outer surface of the package will absorb moisture in the air and become wrinkled after the wrapper is removed from the base paper roll. When the outer wrinkled paper enters the machine, it will definitely cause problems.
以上就是濟南宣傳單頁印刷廠家給我們總結的精彩內容了,今天就先給大家介紹到這里,如果大家還有要補充的地方,歡迎到我們的官網給我們留言評論:http://fashionalized.com
These are the wonderful contents summarized by Jinan Publicity Page Printer. Today we will introduce them to you first. If you have anything to add, please leave a comment on our official website: http://fashionalized.com.