Post by Ray (Flock Man) on Apr 14, 2010 21:47:39 GMT -5
Flock Jump Study!
Take note of the last few statments.
Most notable in the study!
Take note of the last few statments.
Most notable in the study!
This means that an increase in the moisture absorption of flocks lowers their leakage resistance and raises their jumping ability. However, wetness reduces separability and impairs the jumping ability. Generally, the leakage resistance absorption decreases by de-sorption. Accordingly, flock treatment should be such that it increase leakage resistance slightly during drying, and reduces separability slightly when wet.
Of all treating obtainable~. a cationic surface active agent of quaternary ammonium salt type (I) has been found highly effective for the jumping treatment of flocking, as shown with F31 in Fig. 6. Inorganic salt (B) (soliate) is one of the agents widely used today, but a flock treated with this agent, although it decreases only slightly in separability when wet, increases sharply in leakage resistance during drying, thus reducing the jumping ability abruptly.
These studies have led us to clarify the causes of confusion so often encountered in the flocking job. One remedy is to use a treating agent.
1. Another conceivable remedy is to suit the temperature and humidity to the treating agent used (e.g., about 20°C and 75% R.H. for B), enforcing strict control of air condition (especially humidity) in not only the flocking chamber but in the stock chamber, too, keeping a well-balanced humidity in both chambers.
4. Conclusions
The condition for jumping of flocks in the electric field has been clarified quantitatively. This was aided with a photo-density meter trially devised, and a leakage resistance meter.
It has been found that only a small amount of a cationic surface-active agent of the quaternary ammonium salt type is highly effective for the jumping treatment of synthetic-fiber flocking.
It is believed that inquiry into new treating agents, such as permanent anti-charge agents and soft finish agents, will be interesting and useful, because these new agents have many good properties, compared with the usual inorganic salts, for the handling of after-flocking. They have also tenacity and pliability, such as are found in acrylic adhesives.
Of all treating obtainable~. a cationic surface active agent of quaternary ammonium salt type (I) has been found highly effective for the jumping treatment of flocking, as shown with F31 in Fig. 6. Inorganic salt (B) (soliate) is one of the agents widely used today, but a flock treated with this agent, although it decreases only slightly in separability when wet, increases sharply in leakage resistance during drying, thus reducing the jumping ability abruptly.
These studies have led us to clarify the causes of confusion so often encountered in the flocking job. One remedy is to use a treating agent.
1. Another conceivable remedy is to suit the temperature and humidity to the treating agent used (e.g., about 20°C and 75% R.H. for B), enforcing strict control of air condition (especially humidity) in not only the flocking chamber but in the stock chamber, too, keeping a well-balanced humidity in both chambers.
4. Conclusions
The condition for jumping of flocks in the electric field has been clarified quantitatively. This was aided with a photo-density meter trially devised, and a leakage resistance meter.
It has been found that only a small amount of a cationic surface-active agent of the quaternary ammonium salt type is highly effective for the jumping treatment of synthetic-fiber flocking.
It is believed that inquiry into new treating agents, such as permanent anti-charge agents and soft finish agents, will be interesting and useful, because these new agents have many good properties, compared with the usual inorganic salts, for the handling of after-flocking. They have also tenacity and pliability, such as are found in acrylic adhesives.
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