Scratch tax invoice printing process equipment and materials

Scratch-type tax invoices are another major change in the history of commercial printing of commercial paper in China. They impose higher requirements on bill printing equipment, processes, and materials. Whether it is for printing manufacturers or equipment and materials suppliers, there are pressures and challenges on investment and market development prospects, and there are also unlimited market opportunities.

This article is divided into technical articles, equipment articles, materials articles, respectively, on the scraping tax invoice printing process, equipment and materials used in three aspects to everyone to make a basic introduction.

Technology

According to scratch-off tax invoices scraping silver printing methods, China's scratch-off tax invoice printing process currently has three main types: screen printing process, flexo printing process and embossed printing process, the specific printing The process flow is:

Offset Printed Note Contents (UV Drying) → Inkjet Printing Part Printing Variable Information (Hot Air Drying) → Embossing/Flexo/Offset Printing Offset (UV Drying) → Rotary Screen Printing/Flexographic Printing/Topography Printing Part of the printed overlay (ie, scratch silver printing, UV drying).

Comparison of three printing process methods for scraping the ink layer:

1 Equipment investment. Screen printing equipment needs to be imported separately, plus tariffs, making the cost of screen printing higher. At the same time, consumables such as screen printing plates are also produced by the same manufacturer. The purchase of equipment and consumables is subject to certain restrictions; while flexographic and The letterpress printing unit is provided by the same commercial form rotary press manufacturer, and the unit price is lower than the screen printing equipment.

2 plate making costs. There are currently two types of scratch-off tax invoice screen printing plates: disposable and renewable. The cost of the screen printing plate is high and the cycle is long. It is generally required by the equipment dealer to entrust the equipment manufacturer to complete the processing. The flexo and embossing platemaking channels are widely used and the cost is low.

3 scratch the ink layer printing effect. Screen printing scratched the ink layer effect is good, high finish, followed by flexo printing, but the difference between the two printing results is not, screen printing is a print, flexo printing needs to print two or three times. The embossing is to transmit ink through the rubber roller. The ink layer is thin, and the thickness of the ink layer must be increased through the extra long ink path. Therefore, the embossing scratches the ink layer to have a poor finish.

4 printing speed. Screen printing ink layer thicker, the printing speed is relatively slow, generally 50 ~ 60 m / min; multi-layer flexo ink layer because each layer is relatively thin, and drying layer by layer, the printing speed is faster, generally 80 ~ 100 m/min; the speed of the embossing is affected by the extra long ink path, and the speed is not very fast. At the same time, since the embossing scratches the content of the ink silver, the drying speed is slower, which also affects the printing speed.

5 single print output. Screen printing plates often need to be cleaned because of the relatively low single-page printing; the number of single-page printing of letterpress and flexo printing is relatively high.

6UV drying. The screen printing ink layer is thicker, the UV drying energy consumption is the largest; the embossing scratches the silver ink powder content is much, the power of the UV lamp required for drying is larger; the flexible printing ink layer is thinner, the scratching ink proportion is also relatively normal. The power required for UV drying lamps is relatively small.

7 ink consumption. Screen printing ink pump ink supply, ink consumption, and embossing and flexo are provided by the ink fountain, the consumption of ink is relatively small.

According to the printing process, the scratch-off tax invoice production line is mainly composed of three parts, namely a commercial form rotary printing press for printing the contents of the notes, a digital printing device for printing ticket numbers, passwords, and prize-invoice award zone information. , as well as a letterpress, flexo, or screen printing unit for printing a scratch-off tax invoice covering the ink layer.

(1) Commercial Table Rotary Printing Machine

At present, there are mainly four suppliers of commercial form rotary presses for the printing of tax invoices in China. They are Beijing Panchi Technology Development Co., Ltd., Shanghai Ziguang Machinery Co., Ltd., Beiren Fuji Printing Machinery Co., Ltd., and Shanghai Xinxun. Sun Machinery Co., Ltd. They produce or agents use form rotary presses to provide equipment for screen printing, letterpress, and flexo printing.

As of the beginning of December 2002, according to the data provided by various suppliers, the application of commercial form printers in the scratch-off tax invoice printing market was as follows: Beijing Leopard Technology Development Co., Ltd. has installed 28 articles in 10 provinces and cities across the country. Awarded ticket production line; Beiren Fuji Printing Machinery Co., Ltd. installed 10 scratch-off tax invoice production lines in Shanghai and Beijing. The installed capacity ranks first among four suppliers in Beijing and Shanghai; Shanghai Xinyi Sun. The installed capacity of Machinery Co., Ltd. and Shanghai Ziguang Machinery Co., Ltd. in the country also has 6 and 4 production lines. In addition, Komori and Martini also have printing equipment for scratch-off tax invoices.

(2) Digital printing equipment

At present, there are mainly three kinds of digital printing equipment used to print out scratch-off tax invoices. They are the Scitex digital printing system represented by Beijing Leopard Technology Development Co., Ltd., and Beijing Caize Technology Co., Ltd. Acting the German Atlantic Zeiser digital printing system and the Canadian Leibinge "Creation" digital printing system represented by Shenzhen Kaireduo Printing Equipment Co., Ltd.

Scitex Digital Printing Systems, the agent of Beijing Leopard Technology Development Co., Ltd., has the largest market share and has more than 20 users in the country. Including the Scitex Dijit 5300 and 6240 series, the resolution is 300dpi, the printing width is 69.85mm and 108.5mm respectively, the cleaning cycle is 1000 hours and 800 hours, and the printing speed is up to 300 meters/minute. Printing ink is water-based ink, using infrared drying. It must be transported to the place of origin by Leopard Chi when it is cleaned. It takes about 14 to 20 days for cleaning, and about 60,000 to 70,000 yuan for cleaning an inkjet head.

The Alpha digital printing system produced by Zeisser, which is represented by Beijing Caize Technology Co., Ltd., currently has only one scratch ticket user in China. Alpha digital printing system uses piezoelectric ink jet printing technology, resolution of 256dpi, the maximum printing speed of 600 meters / min, printing width of 4 inches, using fast-drying oily ink, inkjet head cleaning and maintenance, It can be operated by the manufacturer's technicians.

The Canadian Leibinge “Creation” digital printing system represented by Shenzhen Kailaidu Printing Equipment Co., Ltd. has a printing speed of 90m/min. It can print 3 to 4 digital inks at a time. The printing ink used is an oily, fast-drying ink. No need to dry the system, the life of each inkjet head is 600 kg ink, and the cleaning of the inkjet head can be completed by the manufacturer.

Although the current sales volume of the Scitex digital inkjet printing system is relatively large, the “squeeze paper printing technology seminar” held in Beijing and Shanghai in late November 2002 points to the German Alpha digital printing system and the Canadian Laibin. The future sales prospects of the “Creation” digital printing system seem to be very optimistic, especially during the seminar of the “Creation” digital printing system and the business form printing machine produced by Shanghai Xinyi Solar Machinery Co., Ltd. in Shanghai. , caused the participants' interest.

(3) Scrape ink layer printing equipment

Comparing the three types of printing process for scratch-off tax invoices, it can be seen that the printing of the contents of the preceding notes was accomplished by offset printing, and the products of several equipment suppliers were similar; the variable information of inkjet printing was selected by the customer. Which digital printing equipment is relevant and the principle of printing is basically the same. The main difference lies in the way in which the bills are scraped and the ink layer is printed. At present, printing units used for scratch-off tax invoice scraping ink layer printing, in addition to screen printing rotary printing equipment provided by the French Machinery Equipment Services Co., Ltd. screen printing rotary printing equipment and rotary drum, Other embossing and flexo The units are supported by various commercial form rotation printing equipment suppliers to support production according to customer needs.

Invoices, as an important carrier for recording and transmitting information in the field of commercial circulation in China, must possess certain functions and functions of recording information, transmitting information, and storing information. The realization of these functions and functions of bills is mainly caused by the printing of scratch-off tax invoices. Material to complete.

The printed materials for scratch-off tax invoices include segregated oil, scraped silver ink, invoice-specific watermarked paper, and carbonless copy paper. At present, there are two main sources of segregated oil and scratch silver ink used by various manufacturers for printing scratch-off tax invoices. One is the isolation and development of the printing technology research and development center of Beiyin Oil and scratch silver ink (both include letterpress, flexo and screen printing category 3), the other imported from Japan and oil scratch silver ink. There are three main suppliers of scratch-off tax invoice paper: Guangdong Guanhao High-tech Co., Ltd. Jinhuasheng Paper Co., Ltd. and Guangdong Dongguan Tiansheng Special Paper Products Co., Ltd.

Since the new scratch-off tax invoices are not only to print the invoice body information on the front of the invoice, but also on the back of the invoice to print the use of invoices, inquiries and other instructions, therefore, scratch tax invoices on invoice paper, especially carbonless paper Many special requests were made, as follows:

(1) High opacity and opacity requirement above 85%;

(2) Strong compressive performance, that is, the microcapsules for special carbonless copy paper for scratch-off tax invoices should have strong compressive resistance, which is generally 1 to 2 times stronger than ordinary carbonless microcapsules;

(3) The friction resistance is better, and it is required to have a friction resistance less than or equal to 1, so as to ensure that the invoice is not astringent when unwinding, does not hinder the printing of the ticket, and reduces the chance of the invoice being in transit.

(4) It is required that the back of the paper should not have microcapsules, and the scratch-off tax invoiced carbonless copy paper must be clearly printed after the front and back sides are printed;

(5) Scratch-type tax invoices printed with carbonless copy paper must have a certain preservation time, generally about 15 years, and must ensure that the preservation period does not fade, fade, etc.;

(6) The amount of paper for scratch-off tax invoices cannot be too large. Generally, the upper and lower papers for multiple invoices are 15g/m2, and the medium paper is 6g/m2.

Paper and ink are the basic printing materials. Without them, “a woman cannot be a straw without rice”, but with it, only the right choice can be made to produce high-quality paper products. Therefore, for scratch-off tax invoice printing manufacturers, the selection and control of raw and auxiliary materials such as paper and ink used for printing of scrap tax invoices are problems that they should consider and attach importance to after equipment, technology and process.

Source: Digital Printing