Thermoset ink performance and application in printing industry III

(10) Precautions for use
1. The use of thinners: PLASISOL is a paste, which thins when stirred and thickens when placed. To stir before deciding whether to add thinner. It can be used after stirring under normal circumstances. The high hiding power of ink and white ink can also be properly diluted. Due to the large amount of ink after dilution, the hiding power is higher. 502 not much, otherwise it is not easy to dry.

2. The amount of each additive can not be too much, because adding more may destroy the original balance of the ink system, causing other problems. Such as fastness, bleeding, discoloration, elasticity, hiding power and other properties change.

3. For non-contact printing, the frame and platen should have a distance of 0.2-0.8cm.

4. When different series of inks are mixed and used, changes after mixing, such as hiding power, feel, brightness, etc., must be considered.

(11) Printing methods for special effects

1, spot color screening: In the use of spot color separation soft color, with 5-12 colors can be printed with a special texture of the photo effect, and can be printed on dark, light-colored cloth, generally with 160 mesh - 200 screen version, cable about 35-50 lines, flat blade scraper.

2, four-color screening: In the correct use of screen mesh and color separation of the number of lines and angles, in light-colored cloth or on a dark cloth after the completion of the white print a fine photo effect photo pattern General use 200 mesh -350 mesh, 50-80 lines, medium hardness of the flat blade.

3, three-dimensional rounded corners: use three-dimensional Drepang ink, thicker version of the thick photosensitive emulsion printing, the first time to force printing to ensure that the ink penetrates into the fabric fiber, after the second pass to ensure uniform force, just let the ink peel In the screen version, this rounded surface is smooth and fast. General available mesh is 80-150 mesh, scraper should be soft, about 60 degrees.

4, three-dimensional right angle: the use of three-dimensional right-angle ink, only with ordinary photosensitive adhesive production slightly thicker than the average version of the screen, pay attention to the printing method with the same rounded corners. When drying, pay attention to the proper temperature control. Dry it but not overheat it. Otherwise it will destroy the three-dimensional right angle effect.

5, stone effect: the use of stone ink mixed with the general ink, in the printing process should pay attention to the height of the screen, the ink and the screen and the substrate between the substrate is half-peel state, this may be scraped out of this raised In a less regular stone style, the higher the proportion of stone ink, the greater the hardness, and vice versa. Mesh 80-150 mesh, soft scraper, about 60 degrees.

6, cracking effect: In the thermosetting ink by adding 1% -2% of the thickening powder, then add a small amount of foaming ink, about 5%, so that the foaming effect is not obvious is appropriate, after printing is not baked before Crack, then bake, so there is a crack effect. Another method is to make the cracked version of the original plate, and then use the entire film plate to lightly cover the layer, and lightly pulling it can be a cracking effect. Note that the effect of the printing method is similar to that of the stone. The mesh is 100-200 mesh. The soft doctor blade and the cover surface use hard scraper.

(12) Inspection methods for heat treatment

1. Tensile test: The printed thermosetting ink should have good elasticity, and 50% stretch should be kept well.
2. Hand-scrape test: Scrape by hand, without any powder or paste off.

3. Wipe gently with a white cloth or white paper to see if there is any stickiness.

4. Washing test: Wash the detergent with 80°C warm water and the same detergent for 3 to 5 times, drying without any damage.

5. Observed from the surface: baking will have a shiny effect.

6. Touching by hand, the baked thermosetting is more flexible than unbaked.

(thirteen) storage

Although the thermosetting ink does not form a film, the storage time can be as long as several years, but it is recommended that the storage should not be placed in a place with high temperature, and it is not suitable for a place with sunshine.

(14) How to control the transfer of ink and the phenomenon of fabric sublimation

(1) If the ink appears ink transfer or fabric color sublimation instructions first to increase the consistency of the ink, adding thickening additives can improve.

(2) Do not over-bake.

(3) First print white, especially with anti-sublimation white, quickly dry the surface, and then print other colors.
(4) Use suitable fabrics or dyes, usually disperse dyes used in chemical fiber fabrics, easy to sublimate, try to use high-temperature dyes.

(5) Pre-bake the fabric once and reprint it.