The starch treated with the ultrasonic wave shows that its structure and composition are changed, thus the properties of the starch sizing are improved.
用超声波对淀粉进行处理，使淀粉的结构发生变化，上浆性能得到改善。
Intirnal sizing: Rosin, alum or starch sizing introduced into the papermaking stock at the beating or refining stage to prevent ink spread on printing and writing paper.
内施胶：纸浆在打浆或精磨时，加上松香、明矾或淀粉等胶料，使完成的书写或印刷用纸没有洇墨情况。
Intirnal sizing: Rosin, alum or starch sizing introduced into the papermaking stock at the beating or refining stage to prevent ink spread on printing and writing paper.
内施胶：纸浆在打浆或精磨时，加上松香、明矾或淀粉等胶料，使完成的书写或印刷用纸没有洇墨情况。
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