Cultural Specialty Paper

(1) Carbonless copy paper : This type of paper is made without the carbon material used for copying, so it is named carbonless copy paper, or simply carbonless paper. The reason why carbonless copy paper is classified as special paper is as follows: Firstly, the structure of the paper is unique. Carbonless paper is generally divided into upper, middle and lower pages, and each page has three different structures, which was not present in ordinary paper in the past. Secondly, the added chemicals are special. For instance, for carbonless paper, microcapsules need to be prepared using colorless dyes, color developers, etc., while for ordinary paper, only common chemicals (such as rosin glue, modified starch) need to be added. Third, the processing technology is special. The coating operation of carbonless paper varies depending on different surface layers and requires multiple coating processes. Moreover, the processing technology is relatively difficult. However, ordinary paper sometimes does not need to be processed separately. Fourth, the application field is special. Carbonless paper is mostly used in departments such as finance and accounting, aerospace, electronic communication, and national defense and military.

(2) Special book and periodical printing paper: It is generally believed that the printing and publishing of books and periodicals cannot do without offset paper, offset book and periodical paper, coated paper, etc. However, due to the rapid advancement of printing technology and the fierce competition among various media, many high-quality printed decorative papers (with various names such as Monken paper and embossed paper) have become new choices in the book publishing industry. These special paper products suitable for special printing/packaging, with a wide variety of types, have rapidly entered the book and periodical publishing industry, breaking the previous dominance of "printing paper" and the old pattern of standard format. This has enabled special (artistic) paper to rise as a new force, giving books and periodicals a completely new look and attracting more readers and collectors.

(3) Anti-leakage paper: A type of paper with a specially treated surface developed by a Canadian company. In places that need to be kept confidential, just use the dedicated pen that comes with it - the scriber - to mark them out. This pen water is transparent and colorless. When it comes into contact with the paper surface, it will produce a complex pattern. The pattern does not hinder the reading of the article, but it can disrupt the normal operation of the sensitive components of the photocopier, causing a black band to appear in the confidential areas of the photocopied article, thereby achieving the purpose of confidentiality.

(4) Tamper-proof paper: France has developed a tamper-proof security paper called "Secura". It adopts advanced compression printing technology. When the pressure generated by the pen tip, dot matrix printer or letterpress printing acts on the "Secura" paper, it will cause a chemical reaction with the interior of the paper fibers and the back of the paper. After one minute, marks or text patterns will appear on the back of the paper. On the front side of the paper, there is a layer of chemical agent that can prevent the document from being smeared, rubbed, scratched, and color-copied. When organic solvents, reductants, acids, bases and other solvents are used for correction, the preparations will enter the paper fibers and leave a colored mark in them. The surface of this paper is also coated with a layer of toner. If it is scratched with an eraser or a knife, it will also leave a colored mark on the inside of the paper fibers on the surface of the paper.

(5) Sound-emitting paper: Olympus Optical Industries, a Japanese company, has developed a sound-emitting paper. By using a special scanning pen to read the fine dot barcodes printed on the paper, one can hear the sound. The company collaborates with publishers to publish books that speak out. The book records sounds with fine dot barcodes that are 8.4mm wide. With the help of a scanning pen, readers can hear sounds from their headphones.

(6) Pressure-resistant paper: A type of paper with strong elasticity and good toughness, which is made by adding synthetic fibers to wood fibers and then undergoing special processing. It can be used to print books, newspapers, magazines, business cards, etc., and is durable.

(7) Nano waterproof paper: In addition to maintaining the original functions of writing and copying of paper, it also has special properties that ordinary paper does not have, such as super hydrophobicity, moisture-proofing, enhancing the strength of the printed surface, and reducing the expansion rate. As its increased cost is only about 10% of that of ordinary paper, this nano waterproof paper has good market potential and can be used to print water-resistant books and periodicals, long-term preserved documents, military maps, etc.

(8) Security thread paper: Security thread, also known as anti-counterfeiting thread or Zhang Bolun thread, is a kind of anti-counterfeiting mark that uses a special device to add a thread made of metal or plastic to a specific position in the paper sheet during papermaking. Commonly used ones include: invisible single-color and dual-color fluorescent safety wires; A thermal security thread that appears opaque pink at room temperature and displays microprinted text at the heated area when the temperature reaches 37℃ with a finger. Safety thread printed with ultraviolet fluorescent text; A safety thread whose color changes with the viewing Angle; Laser holographic security thread that not only has the function of color change but also pattern change; Metal and magnetic safety wires detected by specific instruments; The window security thread exposed on the paper surface at intervals to prevent counterfeiting by color copiers.

(9) Anti-copy paper: It is used to prevent the original from being copied exactly the same as the original through a photocopier, thus avoiding the purpose of counterfeiting. The so-called anti-copying means to prevent the original from being copied exactly the same as the original through a photocopier, thus avoiding the purpose of forging. The feature of anti-copy paper that uses background color patterns for printing and conceals text, patterns and designs is that it has background color patterns printed on the paper that cause almost no obstacles when reading or recognizing. This is a kind of extremely fine dot pattern or hidden text and pattern printing. Once photocopied, the patterns or hidden characters and designs will be clearly revealed.