Banner printing process Q & A highlights

1. How to make a large version of the banner? How to print?

A: The banner is a kind of special printing product. If the system is still used for conventional plate making and printing, it is not economical in terms of time and cost. Therefore, the “empty net paper type single-word scraping” method is adopted. The introduction is as follows.

1 empty network is a blank screen version. It is suitable for printing square or rectangular squares with a size of 1m or less, foreign words, ethnic letters, etc. First, make two 110cm×110cm or two 92cm×92cm aluminum mesh frames with 80-120 mesh/in (31-47 mesh/inch). Cm) nylon net or stainless steel net stretching net, tension 16 ~ 20N/cm. The sticky net should be firm and sealed with tape. For long-term use, save the oil on the net surface and keep it properly, especially for stainless steel nets. Stainless steel screen printing performance better than nylon mesh, and in the event of brushing does not go blocking the network can be used burner burning to carbonize the printed material, they can wash like new, but you can not get out of the "horse hoof marks", with horse shoe marks There is no ink on the map, one or two can be repaired after printing, and more can only be scrap stainless steel net. Two nets are made to alternately wash nets and squeegee during printing to improve efficiency.

2 paper type paper type is a paper type version, but it is not a tung oil paper version of textile printing, it is a one-time 70 ~ 120g plain paper, glossy paper, and even a large waste newspaper can be used as paper type paper base. Carve out what you want to print on the paper base. There are two methods for hollowing out single-words. One is that handwriting is hand-carved, and this method requires the operator to have the skill of hand-writing standard print characters. The method is: Calculate the size of each word according to the total length of the banner (banner or vertical), front and back vacancies, blank space, words and words, according to the size of the word cut a standard paper sample, and then prepare a number of words according to the number of words Paper base.

The paper base must be at least 10cm larger than the standard paper. In each paper base, draw the standard paper on the base paper. Use the proper number of wool boards to brush and write the water. The water color is filled with blue and green pulp. Water can be colored. When the board is brushed and brushed in water, it should be as small as possible. It is necessary to dry and write. Because the water blemish will be wrinkled after the paper is dry, it cannot be used. After writing a good word on the paper backbone, use a sharp and convenient knife to engrave. Those who have lettering skills do not use a ruler to engrave a straight line. Engraved curves are very sleek, and the total working hours are faster than computer lettering. When engraving, attention should be paid to leaving the process connecting ribs to prevent the paper type from scattering. The connecting ribs must be neatly and beautifully displayed without destroying the shape and identification. The width and width of the connecting ribs must be the same for a full set of banners. Therefore, an optional No. 3 oil brush can be used. In red water, connect the ribs in place of the closed pen.

The second method is to use a computer and a plotting machine to input the entire text into the computer, calculate the size of each word, select the font, and output the word to the plotter. If it is engraved on the sticky note, the output of the anti-character lettering Glue on the surface of the screen when it is printed on the screen plate, and then peel it off after the squeegee is printed. This method is expensive and time-sensitive. It is better to use embossed characters, replace the engraving machine with a red line pen, and use ordinary Paper characters can even be written in scrapped newspapers, hand-carved after painting, and leaving connecting ribs.

3 single-word squeegee puts the paper type positioning on the cloth width, takes the silk screen version A, the paste used for the first character, fixes on the paper type after the ink is covered, starts to stabilize the screen version by one person, and starts to scrape one person. If there is the same word on the same banner, a screen version will be set up. At this time, the paper type has been glued to the screen, moved to the same position and then stenciled; if there is no such word, a screen version will be set off and the plate will be washed. Put the next paper type on the cloth, take the screen plate B, if the previous operation squeegee, A, B screen version rotation wash, squeegee the full width.

2. How to position paper and screen version?

A: First, there must be a long-term case with a 3m long treaty. The total length of the cloth is known and the empty space, character space, and size have been calculated. To straighten out the characters, the center cloth is laid flat and the center line is drawn with a powder. The cloth stretched by the height of the word (banner) or the width of the word (upright); then, from the middle to the both ends of the painting, the words and characters should be drawn. It should be noted whether the midline of the cloth is a word or a word.

The word space should use the outer thread of the four-middle line of the word to draw the words on the paper. On the paper-type paper, the four-middle line of the word should also be drawn. Place the four-center line of the paper so that the four-center line of the paper is aligned with the four-center line, and then put it on the middle. Screen printing scratch. Note: The scribbled text should be numbered, and the checkmarks should be put in the seat so that even if it is skipped, it will not be mistaken.

3. Which fabrics are suitable for making banners?

A: The duration of the banner suspension is longer, shorter or temporary. The purpose is to use conferences, slogans, commercial propaganda, etc. The grades are also high, medium, and low. Therefore, the cloth should be selected according to the customer's requirements and circumstances, generally colored cloths. In a commercial multicolored banner, there may be one or two white ones. The fabrics are usually cotton, polyester, nylon, and Poly cloth. The thickness of the fabric is selected according to the situation.

4. What equipment is required for banner printing?

Answer: The equipment and facilities for banner printing are relatively simple. Generally, they are self-designed manual production lines. Because in most cases, the banner is only printed, the vast majority of the same text of the same size is also printed in one letter, one word, one stamp, and the banner business is short-lived. Therefore, there is no economy that is suitable for this situation. Fast machine equipment.

5. We took a very large and huge banner, 6m wide and 12m long. We must use six pieces of cloth to sew together. There are only two characters in the "sales" and smaller words: contact name, The telephone number is only printed. How do you design the printing with the existing simple equipment?

A: I would like to reduce the ratio first. Draw a design drawing on the computer. Draw six pieces of patchwork and size text. Adjust the composition to the best position, and then use your frame size and printable area. (Including the cross-fourth center line), draw a “double-dashed frame” in the same proportion, copy and print the area of ​​the strokes on each of the banners, copy the double-dashed frame (including the cross-fourth centerline) one by one, and print the area when copying. The dotted inner frame is connected, and the left and right upper and lower sides are each stacked 0.5 to 1 cm. The range defined by the dotted inner frame is the unit for future splicing printing. Therefore, it should be numbered one by one, along with the cross midline and some strokes in the frame, to be output to the cutting plotter in a 1:1 single frame. At the same time, the midline from the end of the cloth to the first printed unit is measured on the computer. The dimensions, the distance of the centerline of each printed unit, and the distance dimension of the midline of each longitudinally printed unit are accurate to ±1.5mm. Then, the fabric is naturally straightened from one end, aligned with the web control line, and laid on the pad. According to the computer-measured size data and the print position number, the cross four lines of each printing unit are painted on the cloth one by one. In the space, write numbers. During the printing, the seats were marked, the engraved paper-shaped cross-fourth center line, the cross-lined four-middle line, the screen version, the squeegee printing, the cycle printing of each printing unit, and the flowers were sewn after the drying. Such banners should be hung on the floor protection net in construction. They should be located one to twenty meters from the ground. Thicker nylon ropes and reinforced fabrics should be sewn around the perimeter and corners of the banners. On scaffolding.

Source: China Silk Screen Professional Network