Special anti-counterfeiting rice paper for postage stamps, postage stamps and production method thereof
A production method and technology of rice paper, applied in the field of postage tickets, can solve the problems of poor printing surface gloss, not bright colors, etc., and achieve the effects of long storage life, anti-counterfeiting ability and national cultural content, and strong insect and mildew resistance
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0029] Example 1 Anti-counterfeiting rice paper for postage tickets
[0030] Using sandalwood bark and sand field rice straw as raw materials, the ratio of the two materials is: sandalwood bark accounts for 40% and sand field straw accounts for 60%; the above-mentioned raw materials are soaked in the pulper with water for about 1 hour, and then The second half is about 10 minutes with heavy knife, and about 10 minutes with empty knife. Add calcium hypochlorite bleaching solution to the slurry for rinsing (the percentage of bleaching solution containing calcium hypochlorite is 1.3~1.5%), 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 rinsed pulp slurry is sequentially purified through a purification system (Ball purification equipment, spiral screen, and skip screen).
[0032] The above-mentioned purified pulp slurry is added with the polymer resin described in the specification ...
Embodiment 2
[0051] Example 2 Postage postcard
[0052] Combine the anti-counterfeiting rice paper obtained in Example 1 with a basis weight of 200g-250g / m 2 The special white cardboard for postage postcards is laminated with glue. Among them, the single-sided glue on the white cardboard becomes the anti-counterfeiting xuan paperboard for single-sided postage postcards, or the double-sided glue on the white cardboard becomes double-sided postage. Special anti-counterfeiting paper for postcards.
[0053] The postage postcard rice paper jam is obtained by cutting, the specification is 550x400mm, and the basis weight is 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: the longitudinal direction is greater than 240, the lateral direction is greater than 130 (test method: L&W15°)
[0056] Expansion rate: <0.4%
[0057] Opacity: >88%.
Embodiment 3
[0059] The rice paper made in Example 1 is used to obtain rice paper stamps by printing patterns and perforating conventional stamp production techniques. specifically:
[0060] For the nature of rice paper, first adjust the plate-making curve: appropriately increase the dot value in the highlight part, appropriately reduce the dot value in the mid-tone and dark-tone parts, and open the level curve; appropriately increase the ink volume in the darkest part to improve the picture contrast; the number of screen lines: each Inches 189 lines.
[0061] The characteristics of the 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), and Y (yellow) are all 5%, and special gray: 6%.
PUM
| Property | Measurement | Unit |
|---|---|---|
| thickness | aaaaa | aaaaa |
| water absorption | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More