Sizing treatment process for denim warp yarns

Abstract

The invention relates to a denim warp sizing treatment process which comprises the following steps: firstly, dispersing polyacrylamide in water, adding a hydrogen peroxide aqueous solution, and treating at a certain temperature for a certain time to form a polyacrylamide solution with the viscosity of 30-50mPa. S; then adding a functional auxiliary agent into the obtained polyacrylamide solution, or further adding a water-based molecular cross-linking agent (the water-based molecular cross-linking agent is added into a non-desizing product) and other auxiliary components to form a sizing treatment solution; and finally, the sizing treatment liquid is pumped into a size tank of a sizing machine, the temperature of the size is set to be 45-85 DEG C, the warp yarn is subjected to padding sizing through a size dipping method, the liquid rate is controlled to be 100-110%, then drying is conducted till the moisture regain is 8-10%, then waxing is conducted, and leasing and winding are conducted to form a warp beam. The method has the advantages that the polymer is safe and environment-friendly, the source is stable and reliable, the modification operation is simple and convenient, the warp sizing percentage and sizing temperature are reduced, the color darkness and fastness of the denim prepared from the warp are further improved, the denim is endowed with the advantages of soft hand feeling, antibacterial function and the like, and the method has a better application prospect.

Description

technical field

[0001] The invention belongs to the technical field of denim fabric production, and relates to a sizing treatment process for denim warp yarns. Background technique

[0002] Denim is a kind of wear-resistant fabric made of indigo-dyed warp and weft. Due to the special smell of plant indigo and the effect of repelling insects, it has a long history. From its invention to the present, denim clothing has been widely loved and has huge consumer demand. During the decades of development in China, it has gradually become a daily clothing suitable for all ages from an alternative symbol.

[0003] The production of denim belongs to the process of dyed yarn spinning, the most important of which is the dyeing and sizing process of denim warp yarn. There are two main dyeing and sizing processes. One is that the warp yarn is dyed first and then sizing. It is carried out on the sizing machine, in which dyeing can be divided into ball dyeing, bobbin dyeing and hank dyeing...

Examples

Embodiment 1

[0032] Put water in the mixing tank, start stirring, add medium molecular weight non-ionic polyacrylamide (trade name: Hengboyuan NPAM600 polyacrylamide) in a proportion of 3.0% by mass, stir and disperse, add hydrogen peroxide solution to make it in The mass percentage concentration in the polyacrylamide solution is 0.4%, and the solution is heated to make the temperature rise from room temperature (25°C) to 60°C at a rate of 2°C per minute, keep it for half an hour, and detect the viscosity to 30~50mPa.s range, spare.

[0033] Sodium carbonate, sodium chloride and emulsified palm wax flakes are sequentially added to the above polyacrylamide solution to form a sizing treatment solution; wherein, the addition amount of sodium carbonate in the sizing treatment solution is 0.1 wt %, and the addition amount of sodium chloride is 0.2 wt%; the added amount of emulsified palm wax flakes is 6% of the mass of the polyacrylamide polymer.

[0034] Put the sizing treatment solution into...

Embodiment 2

[0037] Put water in the mixing barrel, start stirring, add hydrogen peroxide solution to make the mass percentage concentration 0.3%, and put the medium molecular weight non-ionic polyacrylamide (trade name Hengboyuan NPAM800 polyacrylamide) by 5% The mass ratio is added and stirred to disperse, and the solution is heated to make the temperature rise from room temperature to 80°C at a rate of 2°C per minute, stay for half an hour, and check the viscosity to the range of 30-50mPa.s for use.

[0038] Sodium carbonate, sodium sulfate, emulsified palm wax flakes and glycerin are sequentially added to the above polyacrylamide solution to form a sizing treatment solution; wherein, the addition amount of sodium carbonate in the sizing treatment solution is 0.1 wt%, and the addition amount of sodium sulfate is 0.3 wt%; the added amount of emulsified palm wax flakes is 4% of the mass of the polyacrylamide polymer, and the added amount of glycerin is 2% of the mass of the polyacrylamide ...

Embodiment 3

[0042] Put water in the mixing bucket, start stirring, add hydrogen peroxide solution to make the mass percentage concentration in the polyacrylamide solution 0.6%, mix the medium molecular weight non-ionic polyacrylamide (trade name is Changjiu NPAM300 polypropylene) amide) was added in a mass ratio of 3% and stirred to disperse, the solution was heated to make the temperature reach 45°C, the temperature was maintained, and the viscosity was detected to be in the range of 30-50mPa.s, for use.

[0043] To the above polyacrylamide solution, add titanium dioxide sol with a mass concentration of 2% of polyacrylamide polymer, polyurethane water-dispersed cross-linking agent ML-42NF with a mass concentration of 10% of polyacrylamide polymer, and polyacrylamide polymer mass The silicon-containing softener VP45E was dispersed in water with a concentration of 2% to form a sizing treatment solution.

[0044] Put the sizing treatment solution into the sizing tank of the sizing machine, ...

technical field

[0001] The invention belongs to the technical field of denim fabric production, and relates to a sizing treatment process for denim warp yarns. Background technique

[0002] Denim is a kind of wear-resistant fabric made of indigo-dyed warp and weft. Due to the special smell of plant indigo and the effect of repelling insects, it has a long history. From its invention to the present, denim clothing has been widely loved and has huge consumer demand. During the decades of development in China, it has gradually become a daily clothing suitable for all ages from an alternative symbol.

[0003] The production of denim belongs to the process of dyed yarn spinning, the most important of which is the dyeing and sizing process of denim warp yarn. There are two main dyeing and sizing processes. One is that the warp yarn is dyed first and then sizing. It is carried out on the sizing machine, in which dyeing can be divided into ball dyeing, bobbin dyeing and hank dyeing...

Examples

Embodiment 1

[0032] Put water in the mixing tank, start stirring, add medium molecular weight non-ionic polyacrylamide (trade name: Hengboyuan NPAM600 polyacrylamide) in a proportion of 3.0% by mass, stir and disperse, add hydrogen peroxide solution to make it in The mass percentage concentration in the polyacrylamide solution is 0.4%, and the solution is heated to make the temperature rise from room temperature (25°C) to 60°C at a rate of 2°C per minute, keep it for half an hour, and detect the viscosity to 30~50mPa.s range, spare.

[0033] Sodium carbonate, sodium chloride and emulsified palm wax flakes are sequentially added to the above polyacrylamide solution to form a sizing treatment solution; wherein, the addition amount of sodium carbonate in the sizing treatment solution is 0.1 wt %, and the addition amount of sodium chloride is 0.2 wt%; the added amount of emulsified palm wax flakes is 6% of the mass of the polyacrylamide polymer.

[0034] Put the sizing treatment solution into...

Embodiment 2

[0037] Put water in the mixing barrel, start stirring, add hydrogen peroxide solution to make the mass percentage concentration 0.3%, and put the medium molecular weight non-ionic polyacrylamide (trade name Hengboyuan NPAM800 polyacrylamide) by 5% The mass ratio is added and stirred to disperse, and the solution is heated to make the temperature rise from room temperature to 80°C at a rate of 2°C per minute, stay for half an hour, and check the viscosity to the range of 30-50mPa.s for use.

[0038] Sodium carbonate, sodium sulfate, emulsified palm wax flakes and glycerin are sequentially added to the above polyacrylamide solution to form a sizing treatment solution; wherein, the addition amount of sodium carbonate in the sizing treatment solution is 0.1 wt%, and the addition amount of sodium sulfate is 0.3 wt%; the added amount of emulsified palm wax flakes is 4% of the mass of the polyacrylamide polymer, and the added amount of glycerin is 2% of the mass of the polyacrylamide ...

Embodiment 3

[0042] Put water in the mixing bucket, start stirring, add hydrogen peroxide solution to make the mass percentage concentration in the polyacrylamide solution 0.6%, mix the medium molecular weight non-ionic polyacrylamide (trade name is Changjiu NPAM300 polypropylene) amide) was added in a mass ratio of 3% and stirred to disperse, the solution was heated to make the temperature reach 45°C, the temperature was maintained, and the viscosity was detected to be in the range of 30-50mPa.s, for use.

[0043] To the above polyacrylamide solution, add titanium dioxide sol with a mass concentration of 2% of polyacrylamide polymer, polyurethane water-dispersed cross-linking agent ML-42NF with a mass concentration of 10% of polyacrylamide polymer, and polyacrylamide polymer mass The silicon-containing softener VP45E was dispersed in water with a concentration of 2% to form a sizing treatment solution.

[0044] Put the sizing treatment solution into the sizing tank of the sizing machine, ...