Process for jet dyeing fibrous articles containing polyester-type synthetic fibers
AssigneeTeijin Limited
InventorsHiroshi Namiki, Norihiro Minemura, Takeo Kimura, Shigeru Takahashi
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Abstract
An improved jet dyeing process for fibrous articles containing polyester-type synthetic fibers which comprises heating the bath liquid while moving said fibrous article at a rate of 80 to 300 meters/min. in a bath containing no dye; adding a dye liquor at a rate of not more than 20 liters/sec. when the temperature of the dye bath has exceeded 110.degree.C; and successively dyeing the fibrous article at a temperature of more than 110.degree.C. while moving it at the above rate, and an apparatus suitable for practising aforesaid jet dyeing process.
Claims14
In a jet dyeing process for dyeing fibrous articles containing polyester-type synthetic fibers by adding a jet of a dye liquor to a liquid bath containing a fibrous article moving therein, the improvement which comprises,
- a. moving the fibrous article in a liquid bath in a dyeing tank at a rate, relative to said dyeing tank, of 80 to 300 meters per minute while the liquid bath is at a temperature of no more than 80.degree.C. and does not contain any dye,
- b. elevating the temperature of the liquid bath in the dyeing tank to at least 110.degree.C., while the fibrous article is moving therein, and
- c. adding a dye liquor containing dye in an amount of 1 gram per liter to 100 grams per liter to said liquid bath at a rate of not more than 20 liters per second after the temperature of said liquid bath reaches at least 100.degree.C. to form a dye bath in said dyeing tank of at least 110.degree.C., said dye bath having a dye concentration of 0.001 to 5% based on the weight of the fibrous article in said dye bath, while continuing to move said fibrous article in said dye bath at said rate of 80 to 300 meters per minute, relative to said dyeing tank until said fibrous article is dyed.
Dependencies are inferred from the claim text.