Summary of the invention
Goal of the invention: in order to solve the existing problem of prior art, the invention provides a kind of
Technical scheme: for achieving the above object, the natural dyeing method of a kind of yellow modal fabric of the present invention comprises the following steps:
(1) pre-treatment: the hydrogen peroxide solution that is 30% with mass fraction by modal fabric soaks 35-45min, adds in addition degreaser 0.5-1.0g/L, and soaking temperature is 80-100 ℃, has soaked after washing;
(2) dry: will be dried through the modal fabric of washing, temperature 70-80 ℃, dry to 7-8 and become dry;
(3) dyeing: at 20-25 ℃, the modal fabric after drying is entered to water, bath raio is 1:15-1:25, and adjusting pH is 6-6.5, be warming up to 35-45 ℃, add natural gardenia yellow dye 3%(o.w.f), anti-creasing agent 2-4g/L, be down to room temperature after insulation 15-20min and keep 15-20min, take out washing;
(4) washing: washing is divided into two stages, at first carries out hot wash, and wash temperature is 70-80 ℃, and wash time is 10-20min, then carries out common washing, and washing temperature is room temperature, and washing time is 20-30min;
(5) fixation: the modal fabric after washing is reentered into to dye vat, and bath raio is 1:15-1:25, adds citric acid and color-fixing agent, and wherein citric acid adding amount is 1-2g/L, and the color-fixing agent addition is 3-5g/L, is warming up to 50-60 ℃ of insulation 25-35min;
(6) after, arrange: the modal fabric after the taking-up fixation, carry out loose formula stoving process stentering forming under 80-90 ℃.
Further, in described step (3), the natural gardenia yellow dye is that the cape jasmine 20g that gets pulverizing uses the ethanol of 50%-60% at 70-100 ℃ of lower heating and refluxing extraction 5-6h, the alum solution that adds 13-16g/L in phegma, heating 30-40min is uniformly mixed and makes under 40-50 ℃.
Further, the described speed that is uniformly mixed is 600-800r/min.
Beneficial effect: the natural dyeing method of a kind of yellow modal fabric provided by the present invention, comprise pre-treatment, dry, dyeing, washing, six stages of fixation and rear arrangement, wherein dyeing takes the natural gardenia yellow dye made from cape jasmine and alcohol heating reflux to carry out, and in the washing in washing stage twice different temperatures successively, guaranteed the colouring fastness of dyestuff, the method that one aspect of the present invention utilizes natural dye to be dyeed to modal fabric can be to environment, also harmless, with its nature of modal fabric, simple, graceful color style brings out the best in each other, increased its eco-environmental prote, greatly improve the modal fabric value-added content of product, meet the demand of people to healthy clothing, there is very strong practical value, there is on the other hand colouring fast, the effect that color is uniform and stable.
The specific embodiment
Below in conjunction with specific embodiment, the present invention is further described:
Embodiment 1:
A kind of natural dyeing method of yellow modal fabric is characterized in that comprising the following steps:
(1) pre-treatment: the hydrogen peroxide solution that is 30% with mass fraction by modal fabric soaks 35min, adds in addition degreaser 0.5g/L, and soaking temperature is 80 ℃, has soaked after washing;
(2) dry: will be dried through the modal fabric of washing, temperature 70 C, dry to 7 one-tenth and do;
(3) dyeing: at 20 ℃, the modal fabric after drying is entered to water, bath raio is 1:15, and regulating pH is 6, is warming up to 35 ℃, adds natural gardenia yellow dye 3%(o.w.f), anti-creasing agent 2g/L, be down to room temperature after insulation 15min and keep 15min, takes out washing; Wherein the natural gardenia yellow dye is the cape jasmine 20g that gets pulverizing with 50% ethanol at 70 ℃ of lower heating and refluxing extraction 6h, adds the alum solution of 13g/L in phegma, and heating 40min is uniformly mixed and makes with the speed of 600r/min under 40 ℃.
(4) washing: washing is divided into two stages, at first carries out hot wash, and wash temperature is 70 ℃, and wash time is 10min, then carries out common washing, and washing temperature is room temperature, and washing time is 20min;
(5) fixation: the modal fabric after washing is reentered into to dye vat, and bath raio is 1:15, adds citric acid and color-fixing agent, and wherein citric acid adding amount is 1g/L, and the color-fixing agent addition is 3g/L, is warming up to 50 ℃ of insulation 25min;
(6) after, arrange: the modal fabric after the taking-up fixation, carry out loose formula stoving process stentering forming under 80 ℃.
Embodiment 2:
A kind of natural dyeing method of yellow modal fabric is characterized in that comprising the following steps:
(1) pre-treatment: the hydrogen peroxide solution that is 30% with mass fraction by modal fabric soaks 45min, adds in addition degreaser 1.0g/L, and soaking temperature is 100 ℃, has soaked after washing;
(2) dry: will be dried through the modal fabric of washing, 80 ℃ of temperature, dry to 8 one-tenth and do;
(3) dyeing: at 25 ℃, the modal fabric after drying is entered to water, bath raio is 1:25, and regulating pH is 6.5, is warming up to 45 ℃, adds natural gardenia yellow dye 3%(o.w.f), anti-creasing agent 4g/L, be down to room temperature after insulation 20min and keep 20min, takes out washing; Wherein the natural gardenia yellow dye is the cape jasmine 20g that gets pulverizing with 60% ethanol at 100 ℃ of lower heating and refluxing extraction 5h, adds the alum solution of 16g/L in phegma, and heating 30min is uniformly mixed and makes with the speed of 800r/min under 50 ℃.
(4) washing: washing is divided into two stages, at first carries out hot wash, and wash temperature is 80 ℃, and wash time is 20min, then carries out common washing, and washing temperature is room temperature, and washing time is 30min;
(5) fixation: the modal fabric after washing is reentered into to dye vat, and bath raio is 1:25, adds citric acid and color-fixing agent, and wherein citric acid adding amount is 2g/L, and the color-fixing agent addition is 5g/L, is warming up to 60 ℃ of insulation 35min;
(6) after, arrange: the modal fabric after the taking-up fixation, carry out loose formula stoving process stentering forming under 90 ℃.
Embodiment 3:
A kind of natural dyeing method of yellow modal fabric is characterized in that comprising the following steps:
(1) pre-treatment: the hydrogen peroxide solution that is 30% with mass fraction by modal fabric soaks 40min, adds in addition degreaser 0.8g/L, and soaking temperature is 90 ℃, has soaked after washing;
(2) dry: will be dried through the modal fabric of washing, 75 ℃ of temperature, dry to 7.5 one-tenth and do;
(3) dyeing: at 23 ℃, the modal fabric after drying is entered to water, bath raio is 1:20, and regulating pH is 6.3, is warming up to 40 ℃, adds natural gardenia yellow dye 3%(o.w.f), anti-creasing agent 3g/L, be down to room temperature after insulation 18min and keep 18min, takes out washing; Wherein the natural gardenia yellow dye is the cape jasmine 20g that gets pulverizing with 55% ethanol at 70 ℃ of lower heating and refluxing extraction 5.5h, adds the alum solution of 15g/L in phegma, and heating 35min is uniformly mixed and makes with the speed of 700r/min under 45 ℃.
(4) washing: washing is divided into two stages, at first carries out hot wash, and wash temperature is 75 ℃, and wash time is 15min, then carries out common washing, and washing temperature is room temperature, and washing time is 25min;
(5) fixation: the modal fabric after washing is reentered into to dye vat, and bath raio is 1:20, adds citric acid and color-fixing agent, and wherein citric acid adding amount is 1.5g/L, and the color-fixing agent addition is 4g/L, is warming up to 55 ℃ of insulation 30min;
(6) after, arrange: the modal fabric after the taking-up fixation, carry out loose formula stoving process stentering forming under 85 ℃.
Should be understood that, the above specific embodiment only is not used in and limits the scope of the invention for the present invention is described, after having read the present invention, those skilled in the art all fall within the application's claims limited range to the modification of the various equivalent form of values of the present invention.