Method for producing dyed textile materials consisting of polyester and polyamide
AssigneeCarl Freudenberg KG
InventorsHeike Bartl, Kurt Jörder
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Abstract
The invention relates to a method for producing dyed textile materials consisting of polyester and polyamide. The textile material is dyed by means of pigments or a disperse dye that stains polyester. Surplus dye is removed. The polyamide portion is dyed using vat dyes, leuco vat dyes, sulphide dyes or soluble sulphide dyes. Said dyes are vatted if this is required for obtaining a solubility and are oxidatively converted into the real dyes after attaching.
Claims19
A method for producing a dyed textile material made of polyester and polyamide, comprising the steps of:
- providing a textile material comprising a polyester portion and a polyamide portion;
- dyeing the textile material with disperse dye that dyes polyester or with a pigment;
- removing any excess dye;
- and
- dyeing the polyamide portion using vat dye, leuco vat dye, sulphide dye or soluble sulphide dye;
- wherein a washfastness of at least 3-4 is achieved at 60° C. when tested using ISO 105 C06-C2S;
- and
- wherein during dying of the polyester, the dye bath composition is standardized to a pH-value of 4.5 to 5.
A method for producing a dyed textile material made of polyester and polyamide, comprising the steps of:
- providing a textile material comprising a polyester portion and a polyamide portion;
- dyeing the polyester portion with disperse dye that dyes polyester;
- followed by reductively cleaning the textile material at about 80° C.;
- and dyeing the polyamide portion using vat dye;
- wherein a washfastness of at least 3-4 is achieved at 60° C. when tested using ISO 105 C06-C2S;
- wherein during dying of the polyester, the dye bath composition is standardized to a pH-value of 4.5 to 5;
- and
- wherein the polyester portion dyeing step and the polyamide portion dyeing step are performed in different dye baths.
A method for producing a dyed textile material made of polyester and polyamide, comprising the steps of:
- providing a textile material comprising a polyester portion and a polyamide portion;
- dyeing the textile material in a dye bath comprising disperse dye and vat dye at about 130° C.;
- cooling the textile material to about 80° C. followed by reductively cleaning and vatting at about 80° C.;
- and
- cooling and oxidizing the textile material at about 60° C., followed by rinsing to remove excess dye,
- wherein a washfastness of at least 3-4 is achieved at 60° C. when tested using ISO 105 C06-C2S;
- and
- wherein the dye bath is standardized to a pH-value of 4.5 to 5.
A method for producing a dyed textile material made of polyester and polyamide, comprising the steps of:
- providing a textile material of a microfilament nonwoven fabric comprising a polyester portion and a polyamide portion;
- providing a printing paste comprising a pigment and a leuco vat dye;
- and
- applying the printing paste to the nonwoven fabric using a printing screen.
Dependencies are inferred from the claim text.