There are many types of special paper, and the design effects are also different. Yuesheng Paper here introduces several applications of commonly used special paper.
1. Plant parchment (sulfuric acid paper)
Plant parchment paper is a kind of denatured processed paper that is made of thick paper made from plant fibers and treated with sulfuric acid to change its original properties. It is translucent, with fewer pores in the paper, and the paper is tough and tight, and it can be waxed, coated, embossed or wrinkled. Its appearance is easily confused with tracing paper.
Because it is translucent paper, in modern design, sulfuric acid paper is often used as a ring liner or liner for books. This can better highlight and highlight the theme, and it is in line with modern trends. Sometimes used as the title page of a book or picture book.
2. Synthetic paper (polymer paper and plastic paper)
Synthetic paper is made of synthetic resin (such as PP, PE, PS, etc.) as the main raw material. After a certain process, the resin is melted, extruded and stretched into a film, and then processed into paper, giving it the natural plant fiber whiteness Materials obtained from opacity and printability. Generally, synthetic paper is divided into two categories: one is fiber synthetic paper and the other is film-based synthetic paper.
Synthetic paper is no different from ordinary natural plant fiber paper in appearance. Film-based synthetic paper has entered the market of high-quality printing paper and can adapt to a variety of printing machines. The synthetic paper currently used in the market refers only to film-based synthetic paper. If books, advertisements, manuals, etc. printed on synthetic paper are not marked, the average consumer cannot see the difference between it and ordinary paper.
Synthetic paper has excellent printing performance, and no "paper break" phenomenon occurs during printing; the surface of the synthetic paper presents very small irregularities, which is very helpful for improving opacity and printing suitability; the synthetic paper image reproduces well, The dots are clear, the color tone is soft, the size is stable, and it is not easy to age. The printing effect of synthetic paper is shown in Figure 3. It is worth noting that when using offset printing, professional synthetic paper offset printing ink should be used.
3. Embossed paper
(1) Characteristics of embossed paper
Adopt mechanical embossing or crepe paper to form concave and convex patterns on the surface of paper or cardboard. Embossed paper improves its decorative effect by embossing, making the paper more textured. In recent years, embossing on the surface of printing paper has become more and more common. Color dyed paper such as offset paper, coated paper, whiteboard paper, and white card paper are embossed (grained) before printing. Increasing the grade of paper also brings higher added value to paper sales. Many papers used for flexible packaging often use embossing methods before or after printing to improve the visual effects of packaging and decoration and increase the value of the goods. Therefore, embossing has become an important method of paper processing.
(2) Processing method of embossed paper
There are two processing methods for embossed paper. First, after the paper is produced, the pattern is added mechanically to become embossed paper; second, after the flat base paper is dried, it is put into the embossing machine for further processing, and then pressed by two rollers, one of which is With embossed patterns, the paper will be embossed into patterns after passing through. Because the texture of embossed paper is deep, usually only one side of the paper is embossed.
(3) Types of embossing
Embossing can be divided into two types: register embossing and non-register embossing. The so-called set embossing is to press the printed flower shape and press the printed flower shape into a concave-convex shape to make the pattern bulge, which can play the role of beautiful decoration.
Non-plate embossing means that the embossed pattern has no direct relationship with the printed pattern. There are many types of embossed patterns. Such as cloth pattern, diagonal cloth pattern, straight stripe, Yalian net, orange skin pattern, straight net pattern, needle net pattern, egg skin pattern, sack pattern, plaid pattern, leather pattern, scalp pattern, linen pattern, gear stripe, etc. This non-overprint embossing is widely used in embossed printing paper, coated book cover paper, patent cover paper, plastic synthetic paper, plant parchment paper and other decorative materials.
Most of the domestic embossed paper is made of offset paper and whiteboard paper. The surface is rough, textured, expressive, and diverse. Many art designers prefer to use this kind of paper, and use it to make covers or title pages of books or albums to express different personalities. [next]
4. Pattern paper
Designers and printers are constantly seeking unique design styles to make their work stand out. Many times pattern paper can make them icing on the cake. This type of high-quality paper products has a soft touch, a gorgeous appearance, and the finished product is more noble and pleasing. There are many varieties of pattern paper, each with its own characteristics, which is higher than ordinary paper. Pattern paper can be divided into the following types:
(1) Copy net paper
Dip netting is the most traditional and commonly used method to give paper texture. This process is generally inserted in the papermaking process. The wet paper is placed between two absorbent soft flannels, and the line texture of the flannel will be printed on the paper. This process is divided into single-sided or double-sided printing. The lines and patterns of the screen paper such as gangue stripe paper are looming and soft in texture. Some imported screen papers contain cotton, so the texture is softer and natural and the toughness is full, suitable for packaging printing.
(2) Antique effect paper
Many customers and graphic designers have a special liking for high-quality, plain uncoated paper, and love the warmth and richness of this type of paper. In addition, book publishers also require more durable paper, but also hope that the paper is fresh and stiff to ensure stable and consistent printing results. The products designed with antique effect paper are simple, beautiful and elegant. As shown in Figure 7.
(3) Doping and special effect paper
The trend of environmental protection is very popular, and spotted paper came into being. In order to achieve the effect of natural recycling, a variety of debris were added to the pulp. The amount and size of the doped matter must be properly controlled. If the number of paper dots is too large, it will destroy the graphic effect, and if it is too small, it will give a sticky feeling. There are a variety of doped papers on the market for users to choose from, and some environmentally friendly recycled papers are added with impurities such as ore, snow, petals and so on. Its copying techniques include adding dyes during the sizing process to form spots on the paper or create a parchment effect. This kind of paper is very popular with consumers, and it is the first choice for various certificates, book covers, restaurant recipes and wine lists. Due to the appearance of paper with special effects, designers often use it as the first choice paper for printing simple prints and boring and odorless manuscripts, such as various financial statements of listed companies ’annual reports.
(4) Non-coated pattern paper
Both printers and designers are unanimous in admiring the uncoated paper that is beautiful and has a good hand feel. In order to achieve a beautiful visual effect on the printed matter, it has a more upscale and gorgeous feel. The natural texture of uncoated copy paper and the printability of coated paper are both compatible. Both sides of this paper are specially treated to reduce the water absorption of the paper, so that the ink remains on the surface of the paper, making the ink texture better. The series of metal pearlescent paper can change with the different viewing angles of human eyes, and the effect after printing is better.
(5) Just ancient paper
The special paper of the Gangu brand was created in 1888 AD. It was originally adopted the CONQUEROR London castle watermark. It was not changed to the knight plus English watermark until the early 1990s. This distinctive watermark is world-renowned and has become a symbol and code name for high-quality business, writing, and printing paper. It is sold in more than 80 countries and regions around the world and is loved by hotels, banks, enterprises, and even government agencies everywhere. Ganggu paper is divided into several categories: nobility, slip surface, texture, concept, digital and so on.
(6) "Ningcai" pearlescent pattern paper
The color tone of the paper can produce different color feelings according to the change of viewing angle. Its luster is formed by the light diffusely refracted to the surface of the paper, with a "sparkling silver" effect, so printing patterns with metallic characteristics will be excellent. It is suitable for making all kinds of high-end, exquisite and modern fashion prints. The cover of a high-end book or the cover of a hardcover book.
The paper surface is smooth and smooth, suitable for various printing processes and processing methods, such as four-color offset printing, rolling cutting, hot stamping, etc.
It is recommended to use oxidized conjunctiva dry ink, the gloss of the ink may not be as good as the gloss of the paper itself. [next]
(7) "Star mining" metal pattern paper
Metal "star mining" pattern paper is a kind of artistic paper that breaks through the traditional and new concept. It not only maintains the classics and aesthetics inherent in high-quality paper, but also uniquely has a metallic tone on both sides, which is luxurious and not tacky, steady and not public, making it show a strong temperament that is very different from ordinary art paper.
The metal “star mining†adopts a new process, its metal characteristics will never fall off, and the paper surface is smooth, but it adds infinite courage to the printing effect. It is suitable for various printing technologies and special processes, especially the hot stamping process. which performed. When printing, it is recommended that the screen line be between 130 and 150 lines / inch. When printing on dark metal pattern paper, the ink color should be increased.
Metal "star mining" can produce all kinds of high-end prints, such as paper used as product samples, covers for annual reports and books, and for various packaging boxes.
(8) Gold paper
There is a qualitative difference between gold paper and traditional gold foil. Traditional gold foil can only be printed with the aid of transparent materials, and cannot be directly colored for printing. Using 24K gold as the material and using gold paper developed by nano high technology, it can not only print color images directly on the gold, but also retain the style and performance of the gold. It has the characteristics of anti-oxidation, anti-discoloration, moisture resistance, and mothproof. It avoids the shortcomings of traditional paper books that are easy to mold and moths, and can theoretically be stored for 10,000 years. The gold paper used in "China's Flourishing Age" is the latest generation of new-generation products with higher technological content and cultural content. Its appearance is more similar to ancient rice paper and news newspapers, especially its flame retardancy has achieved a major breakthrough for the first time. The 20 gold editions of the main text are printed in four colors in the "Economic Daily" format, with pictures and texts, a total of nearly 160,000 characters, and 300 gold edition pictures such as characters and scenery. The amount of gold paper and the layout are unprecedented.
In addition, special paper is also dyed in various colors in addition to different paper types, and the decorative effect is very strong. Special paper has many advantages, but special paper also has some shortcomings.
First, the price is more expensive. Ordinary embossed paper is much more expensive than similar paper of the same amount. Therefore, the large-volume albums printed with embossed paper cannot be afforded by customers due to price factors, so they are generally only used for the design and printing of covers or important materials.
Second, most specialty papers have good absorbency and strong penetration, but because of the uneven texture, the ink penetrates into the gaps during printing, especially the large-area solid plate, which is difficult to dry and easy to stick. When printing four-color overprinted characters, the tone is dull. When consumers who do not like soft tones do not understand why the colors printed on special paper are not bright enough, when printing on special paper, be sure to communicate the printing effect to the customer to avoid unnecessary losses.
Third, when printing on colored special paper, it should be noted that four-color images cannot be printed on the surface of dark special paper. It can only print inks with metallic luster or spot colors, such as gold, silver, spot colors, etc.
For example, when printing a four-color mesh tone image on the surface of light beige special paper such as light beige, light green, light blue, light pink, etc., the phenomenon of color cast will appear. Generally, the tone will be biased to the color of the paper surface. Therefore, it is best not to use colored paper to print the mesh tone image when designing. However, if you can correctly use the works designed with different styles and different colors of special paper, there will be unexpected special effects, which will add icing to your works and add a lot of color.
Fourth, the use of various post-press processing methods on the surface of special paper will also produce different styles. Such as hot stamping and uneven embossing on the surface of special paper are very good.
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