Sulfuric acid paper, also known as plate-making transfer paper sulfate, is a hard film-like material made by interweaving fine plant fibers, beating freely in wet state, making paper sheets without sizing and filling, soaking in 72% concentrated sulfuric acid for 2 ~ 3s, washing with clear water, treating with glycerol and drying. Sulfuric acid paper is firm, dense and slightly transparent, and has the characteristics of strong oil resistance, waterproof permeability, good air tightness and high wet strength, and can be waterproof, moisture-proof, oil-proof and sterilized. There are 63gA4, 63gA3, 73gA4, 73gA3, 83gA4, 83gA3, 90gA4, 90gA3 and other specifications.
Main quality indicators related to printing process:
1) Quantization: It is divided into three categories according to two categories, namely, 75g/m2 for Class A, 60g/m2 for Class B and 45g/m2； for Class B; For c;
2) Density: ≥ 0.70 g/cm3;
3) Fracture length (vertical and horizontal average): A ≥5000m, B ≥4500m and C ≥ 4000m;
4) Blast resistance: dry -A ≥270kPa, B ≥250kPa, C ≥ 230 kPa; Wet -A ≥ 130kPa, B ≥ 120kPa, c ≥110kpa;
5) Oil permeability: ≤ 4/100cm2;
6)pH value: 7.01.0;
7) Moisture: 6.0% 1.0%.
Use of sulfuric acid paper
Mainly used in printing and plate-making industry, widely used in manual drawing, stroke/ink-jet CAD plotter, engineering xerography, laser printing, art printing, document recording, _ drawings, printing design and plate-making, gift packaging, photo album inner pages, offset printing, embossing, bronzing, screen printing, pad printing, rubber stamp transfer and so on.
Benefits of sulfuric acid paper to manual accounting
1, copy the font in the mobile phone.
Many of us can't write many fonts, and we can't write them well without long-term professional training. You can find your favorite font in your mobile phone, cover it with sulfuric acid paper, easily copy the font you want, and then paste it in your notebook.
2. Increase the layering of the account.
Stick pictures of your favorite materials on your notebook, and then stick sulfuric acid paper of similar size. You can also use a stapler to staple the sulfuric acid paper on the notebook, and then write your favorite words on the sulfuric acid paper, so that the layout of the notebook is no longer monotonous.
3. Scan and save the bill
Use the scanning application to take photos and print documents. It is suggested to print it with sulfuric acid paper paste (ordinary sulfuric acid paper is easy to jam) and then paste it on the notebook. Because bills are thermal printed, the storage time is not long, but bills printed with sulfuric acid paper can be pasted casually and stored for a long time.
4. Decorate fonts and patterns with a dark background color.
A layer of sulfuric acid paper is superimposed on the background with a deep background color, which is relatively light and hazy. Of course, you can also draw some pictures on sulfuric acid paper and write some words to embellish it.
Step 5 practice copying
Of course, people who specialize in calligraphy and have beautiful calligraphy don't need it, but most people have average calligraphy. You can cover the copybook with sulfuric acid paper, then cut it out and stick it on a notebook to decorate your own words.
Step 6 make small storage bags
Sulfuric acid paper is thin and will not increase the burden of manual books. Fold the sulfuric acid paper into a small pocket and stick it on the ledger, where you can put your favorite material pictures.