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US 6,203,577 B1Granted
Shrink-proof treatment of cellulosic fiber textile
AssigneeNisshinbo Industries, Inc.
InventorsYuichi Yanai, Takayuki Hirai, Masayoshi Oba, Kiyoshi Ikeda, Yasushi Takagi, Takeo Ishikawa, Kazuhiko Harada, Hirotaka Iida, Ryuichi Ito, Osamu Hasegawa
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Abstract
A method for shrink-proofing a cellulosic fiber textile that involves liquid ammonia treatment, hot water or alkali treatment under tension or under no tension, and with optional resin treatment.
Claims6
A method for the shrink-proof treatment of a natural cellulosic fiber textile, comprising the steps of:
- treating the fiber textile with liquid ammonia, thereby converting the cellulose I or II crystalline structure in the fiber textile to cellulose III crystalline structure so that the content of cellulose III crystalline structure in the fiber textile is 10 to 35% based on the entire crystals, and
- treating the fiber textile under tension or under no tension with hot water at a temperature of 100 to 150° C., thereby obtaining a natural cellulosic fiber textile having a minimal shrinkage after washing.
A method for the shrink-proof treatment of a natural cellulosic fiber textile, comprising the steps of:
- treating the fiber textile with liquid ammonia, thereby converting the cellulose I or II crystalline structure in the fiber textile to cellulose III crystalline structure so that the content of cellulose III crystalline structure in the fiber textile is 10 to 35% based on the entire crystals, and subsequently
- treating the fiber textile under tension or under no tension with hot water at a temperature of 100 to 150° C., thereby obtaining a natural cellulosic fiber textile having a minimal shrinkage after washing.
Dependencies are inferred from the claim text.