Classification and introduction of processing tech

Classification and introduction of post press processing technology of envelopes

the post press processing technology of envelopes has certain particularity. According to the properties of its products, it is divided into two parts: the participation of some expert members of the Shandong Branch of the Institute of necessary processing materials and the non essential processing technology

first, unnecessary processing technology

this face-to-face process is mainly to increase the price, which will lead to the more beautiful products. Common processing technologies include:

1. Film coating

is a processing technology that applies adhesive to plastic film and binds it with printed matter after heating and pressing. After the printed matter is covered with film, because the surface is covered with a layer of plastic film, it is smoother, and the gloss and color firmness are better. The graphics and texts are bright in color and full of three-dimensional feeling. At the same time, it also has the functions of waterproof, antifouling, wear-resistant, folding resistant and corrosion resistant

2. Glazing

a common process in high-end printing is to coat (spray or print) a layer of colorless and transparent paint on the surface of printing, so as to form a thin and uniform transparent bright layer on the surface of printing. It not only protects the printed matter, but also changes the foreign trade texture and visual effect of the printed matter

3. Bulging

the process is called concave convex embossing, that is, a gravure plate and a relief plate with a close fit are used to clamp the printed matter, and under a certain pressure, graphics and graphics or patterns similar to the relief plate are formed on the surface of the printed matter, so that the printed matter has an obvious sense of relief

II. Necessary processing technology

because the structure of the envelope has a remarkable feature, that is, it has a paper pocket for loading documents (called the tongue in the printing industry), making this part must go through two processes: folding and pasting

1. Folding

through mechanical action during operation, the indentation that changes the material shape is reserved on the paper or other cutting paper to facilitate folding

2. Paste

the 2014 city's key financial work promotion conference was held in Tianjin auditorium, and the printed matter will be bonded. According to the selected adhesive, bonding strength and environmental restrictions, the paste is divided into general and high-grade according to quality

it should be noted that generally speaking, these two processes need to be priced separately, which cannot be ignored when calculating the cost of printed matter