Special anti-counterfeiting rice paper for postage stamp, postage stamp and production method thereof

A production method and technology of rice paper, applied in the field of postage stamps, can solve the problems of not bright colors, poor printing surface gloss, etc., achieve the effects of anti-counterfeiting ability and national cultural content improvement, long storage life, and strong insect and mildew resistance

Active Publication Date: 2010-06-23
北京邮票厂有限公司 +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Rice paper is a unique paper variety in my country. Due to the problems of strong ink absorption, excessive printing dot gain, poor printing surface gl...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1 Special anti-counterfeiting rice paper for stamp products

[0030]Adopt green sandalwood bark and sandalwood straw as raw materials, the proportioning of two kinds of raw materials is: green sandalwood bark accounts for 40%, sandalwood straw accounts for 60%; The above-mentioned raw material is soaked pulp about 1 hour with please water in the beater, then The second half heavy knife is about 10 minutes, and the empty knife is relieved for about 10 minutes. Add calcium hypochlorite bleach to the slurry for rinsing (the percentage of calcium hypochlorite in the rinsing solution is 1.3 to 1.5%). The rinsing time is about 30 minutes, and the rinsed slurry is washed to make the residual chlorine in the slurry ≤14mg / l.

[0031] The above-mentioned pulp slurry after rinsing is purified through the purification system (Paul purification equipment, spiral screen, jumping screen) in sequence.

[0032] In the above-mentioned purified pulp slurry, add the polymer re...

Embodiment 2

[0051] Embodiment 2 postage postcard

[0052] The anti-counterfeiting rice paper that embodiment 1 obtains is 200g-250g / m with quantitative 2 The special white cardboard for postage postcards is laminated with glue. Among them, glue is mounted on one side of the white cardboard to become a special anti-counterfeiting Xuan cardboard for single-sided Xuan postage postcards, or double-sided glued on white cardboard to become double-sided Xuan postage Special anti-counterfeit Xuan card paper for postcards.

[0053] Postage postcard Xuan paper cardboard is obtained after cutting, the size is 550x400mm, and the weight reaches 270g / m 2 -320g / m 2 . The main physical indicators of the rice paper jam are as follows (random detection):

[0054] Thickness: 0.405mm~0.468mm

[0055] Stiffness: greater than 240 in the longitudinal direction and greater than 130 in the transverse direction (test method: L&W15°)

[0056] Stretch rate: <0.4%

[0057] Opacity: >88%.

Embodiment 3

[0059] Adopt the rice paper that embodiment 1 makes to obtain the rice paper stamp through the conventional processes of stamp production such as printing patterns and punching perforations. specifically:

[0060] According to the nature of rice paper, first adjust the plate-making curve: appropriately increase the dot value of the highlight part, appropriately reduce the dot value of the midtone and dark part, and stretch the layer curve; appropriately increase the amount of ink in the darkest part to improve the contrast of the picture; the number of screen lines: every inches 189 lines.

[0061] The characteristics of this stamp print are described as follows:

[0062] Reflection density: K (black) 1.0; C (blue) 0.95; M (red) 0.88;

[0063] Y (yellow) 0.65; special gray: 0.31;

[0064] Dot gain: K (black) 75%; C (blue) 70%; M (red) 895;

[0065] Y (yellow) 85%; special gray: 84%;

[0066] Highlight dot value: K (black) is 4%, C (blue), M (red), Y (yellow) are all 5%, s...

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Abstract

The invention provides a production method of special anti-counterfeiting rice paper for a postage stamp, which comprises the following steps: adopting wingceltis barks and straws from sand fields as raw materials, preparing pulp through soaking, beating and bleaching with calcium hypochlorite bleach solution; purifying the prepared pulp, fetching paper, drying, and cutting to manufacture raw rice paper; performing the alum dragging treatment of the raw rice paper in alum solution, and naturally drying the rice paper to obtain non-absorbent rice paper; and applying glue on the back of the non-absorbent rice paper, and drying and flattening to manufacture the special anti-counterfeiting rice paper for the postage stamp. Since the production method in the invention is an improvement based on the conventional production process, the produced rice paper not only preserves the properties of the conventional rice paper, but also has excellent printing applicability. Therefore, the rice paper can be used as the special anti-counterfeiting rice paper for stamps, stamped postcards and other postage stamps.

Description

technical field [0001] The invention provides a special anti-counterfeit rice paper for postage stamps and postage stamps made of the rice paper, and also provides a production method of the special anti-counterfeit rice paper. Background technique [0002] With the continuous and rapid development of my country's economy, the demand for culture and art in the whole society is getting higher and higher. This demand for culture and art is also reflected in the quality, variety, innovation and other aspects of postage tickets. Due to the special requirements for printing suitability, effect and paper, the current postage stamps are made of special paper or cardboard, such as stamps, postage postcards, etc. The innovation in the industry is mainly reflected in stamp product design and printing process However, the paper used for printing and production is difficult to have substantial changes. [0003] Papermaking is one of the "Four Great Inventions" recognized by the world i...

Claims

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Application Information

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IPC IPC(8): D21H11/12D21B1/12D21C3/00D21D1/02D21C9/12D21H21/40D21H25/02D21H19/20D21H19/28D21C9/02D21D5/00D21D5/02D21H21/12B31F1/00G09F3/02B42D15/02
Inventor 刘荣华马宝立柳振国黄迎福曹志刚关钧姜海斌芮坚克
Owner 北京邮票厂有限公司
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