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What are the functions of printing paste

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The role of printing paste in printing processing


In textile printing, the performance of the printing paste directly affects the quality of the printed product, and its main functions in the printing process are:


(1) As printing thickener; (2) As dispersion medium and diluent in printing paste; (3) As transfer agent for dyes and auxiliaries, acting as carrier; (4) As adhesive; ( 5) As a hygroscopic agent during steaming; (6) As a stabilizer for printing paste and a protective colloid that delays the interaction of each component in the paste; (7) After printing or pad dyeing, drying process A leveling agent that resists migration.

Performance requirements of printing paste for printing process


In the actual printing production and processing, in order to obtain a good printing effect and ensure that the outline of the pattern is clear, both printed and impermeable, the paste must meet the following performance requirements:


(1) It has certain adhesion, rheology, plasticity, angularity and resistance to dilution;


(2) Good wetting performance;


(3) Certain physical and chemical stability;


(4) Uniform consistency;


(5) The paste itself cannot have pigment or a little pigment;


(6) Good dye transfer performance;


(7) Certain pressure permeability and film-forming properties;


(8) Certain moisture absorption capacity;


(9) Not easy to foam or easy to defoam;


(10) Good washability;


(11) Higher paste rate.


Therefore, a printing paste with excellent performance is often evaluated in terms of viscosity, rheology, and chemical stability.

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