Screen printing ink 1000 asked (500-509 ask)

500. What is the formula for F-type Acraming adhesive printing ink?

Answer: The basic formula of F-type Acraming adhesive printing ink is as follows.
10% Accraming FWR 100-200g

Emulsifying paste xg

Akramar W 100-200g

Color paste 20-lOOg

Urea (1:1) lOOg

Crosslinking agent FH 1 2-25g

Total: lOOOg

501. When formulating F-type Accelerating adhesive printing ink, what problems should be paid special attention?

A: When formulating, special attention should be paid to the proportion of Alakarma W and 10% Aclalamin FWR blending. If the volume ratio exceeds 2:1, a phenomenon of early aggregation of the “rubber band” state will occur, making the whole The color separation of the color paste occurs, and even if it is stirred rapidly, it cannot be saved. Therefore, when operating, first use the emulsifying paste to dilute the Acralladin FWR solution, and then add the Accra-Marl w, so that the contact point between the two does not always tend to the above ratio, while stirring together to avoid partial Excessive contact.

502. How is the formulation of Akraming FWFI?

A: The recipe for 10% Acralming FWR is as follows.

Akraming FWR lOOg

Water xmI

Acetic acid (98%) 60mI

Total: lOOOmI

503.10% Accraming FWR how to deploy?

A: When blending, put cold water in the color mixing bucket first. Stir the FWR powder in a quick stirrer and slowly inject the 1:3 acetic acid solution while stirring. After the addition, let stand overnight and continue stirring until completely transparent and free of bubbles. Store until ready. In case of emergency use, the FWR powder can be infiltrated with 30% alcohol (300g/L), stirred uniformly, and then added with acetic acid to accelerate the dissolution under the strong stirring of the rapid stirrer.

504. How to calculate the ratio of paste between paste, binder and crosslinker FH?

A: The formula for formulating the ratio between the paste, binder and cross-linking agent is as follows.

The total amount of adhesive agent x 2.5+150
Crosslinking agent FH amount of two color xO. 1 7+8
The total amount of binder in the formula refers to a 1:1 mixture of 10% FWR:W.

505. What are the thermoplastic styrene-butadiene rubber adhesives?

A: Thermoplastic styrene-butadiene rubber adhesives are butadiene-styrene emulsion polymerized and salted, and there are generally four types of adhesives BH 707, 750 (BF) and 605 (FD).

506. How is the adhesive called?

A: After the binder BH is blended with the styrene-butadiene rubber latex and the chitin acetic acid solution, it is made by using the oil as the oil phase under high-speed stirring.

507. How to mix adhesive 707?

A: Adhesive 707 is blended with styrene butadiene synthetic rubber latex and chitin acetic acid solution. It is homogenized and salted at high speed.

508. What should be noted when applying adhesive 707 ?

A: The adhesive 707 should pay attention to the following two points when it is applied.

(1) Conjunctivas formed with this binder are liable to yellow under strong alkali and high temperature conditions, so they cannot be used for white ink or light ink.

(2) Chitin-based positive-charged substances must not be mixed with any anionic charge during use, as they may cause precipitation reactions. For example, reactive dyes and sodium alginate are both substances that are negatively charged, and it is preferable to use Dongfeng brand adhesives that do not contain chitin.

509. What is the formula for applying the adhesive 707 to formulate the ink?

Answer: The basic formula of the ink formulated with adhesive 707 is shown in Table 1.

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