CN101736592A - Method for fabricating color-absorbing cleaning pouches or cleaning strips for washing machines - Google Patents

Abstract

The invention discloses a method for manufacturing a color-absorbing cleaning bag or a cleaning strip for a washing machine in the technical field of light chemical industry. Firstly, a 5-10 g/liter polyepichlorohydrin aminate or a polyacrylic acid aqueous solution has a liquor ratio of 15-55. : 1, after being heated to 80-100 DEG C, a pretreatment agent solution is formed; sodium hydroxide is added to the pretreatment agent solution to adjust the pH value, and the addition amount is 2-7 grams per liter; then the cleaned non-woven fabric is placed Put it into the solution and react for 20-50 minutes; finally, the obtained non-woven fabric is sewn into cloth bags or cloth strips, and the weight of each cloth bag or cloth strip is 1-5 grams. The invention grafts and adsorbs dye groups on the non-woven fabric fibers, and the groups absorb the dyes that fade in the process of washing clothes through electrostatic attraction, so as to achieve the effect of rapidly adsorbing dyes in water without staining other clothes; applicable It is used in various dyed clothes to wash and fade colored waste water. It is easy to use, absorbs colors efficiently, and can protect clothes and the environment.

Description

Manufacturing method of color-absorbing cleaning bag or cleaning strip for washing machine

technical field

The invention relates to the technical field of light chemical industry, in particular to a color-absorbing cleaning bag or cleaning strip made of non-woven fabric, which is used for washing textiles such as clothes in a washing machine.

Background technique

Non-woven fabrics are one of the articles that are closely related to human life. With the improvement of people's living standards, non-woven fabrics have increasingly entered various fields of life, bringing convenience to people's lives. Clothes bought daily, especially dark-colored clothes and other textiles, mostly have the problem of fading when washed with other clothes. When they are mixed with other clothes in the washing machine, the dyes that come off will easily stain other clothes and damage the overall appearance of other clothes. , heavily soiled clothes cannot be worn again, causing huge waste, and domestic sewage containing a large amount of dyes has also polluted the environment. Usually, the solution to this problem is to add a little salt to reduce the degree of fading, or to wash the fading clothes separately, but these two methods increase the workload and the effect is not obvious.

Contents of the invention

The object of the present invention is to provide a low-cost, easy-to-use non-woven color-absorbing cleaning bag or cleaning strip for washing machines that can absorb color-fading dyes.

The technical scheme adopted in the present invention is: first prepare 5-10 g/L polyepichlorohydrin aminate or polyacrylic acid aqueous solution with a bath ratio of 15-55:1, and form a pretreatment agent solution after heating to 80-100°C; Add sodium hydroxide to the pretreatment agent solution to adjust the pH value, the addition amount is 2-7 g/L; then put the cleaned non-woven fabric into the solution and react for 20-50 minutes; finally, sew the obtained non-woven fabric Make cloth bag or cloth strip, each cloth bag or cloth strip weighs 1-5 gram and gets final product.

The beneficial effects of the present invention are:

1. The non-woven fiber is grafted with dye-absorbing groups, which are attracted to the dyes that fade during the washing process through electrostatic attraction, so as to achieve the effect of quickly absorbing dyes in water without staining other clothes.

2. The color-absorbing non-woven fabric of the present invention is suitable for washing and fading colored wastewater of clothes dyed with various dyes.

3. Easy to use, efficient color absorption, can protect other clothes and the environment.

Detailed ways

Non-woven fabric is composed of directional or random fibers. It is a new generation of environmentally friendly materials. It has the advantages of good strength, breathability and waterproof, environmental protection, flexibility, non-toxic, tasteless and cheap. The fibers used in the production of non-woven fabrics are mainly polypropylene or polyester, in addition, there are nylon, viscose fiber, acrylic fiber, polyethylene fiber or chlorine fiber. The present invention selects viscose fiber non-woven fabric as raw material, first carries out pretreatment to nonwoven fabric, then makes cleaning bag or cleaning bar with the nonwoven fabric after pretreatment, and concrete process is as follows:

First prepare 5-10 g/L polyepichlorohydrin aminate or polyacrylic acid aqueous solution, the liquor ratio is 15-55:1, heat to 80-100 DEG C to form a pretreatment agent solution. Then put the cleaned non-woven fabric into the pretreatment agent solution and react for 20-50 minutes, so that the hydroxyl groups of the non-woven fabric fibers are grafted with adsorption dye groups. The dyes are attracted to each other by electrostatic attraction, so as to quickly absorb the dyes in the water without staining other clothes.

In order to achieve the best adsorption effect on dyes, the pretreatment stage must be carried out under alkaline conditions. Therefore, sodium hydroxide is used to adjust the pH value of the pretreatment agent, and sodium hydroxide is added to the pretreatment agent solution when preparing the pretreatment agent. , the addition amount is 2-7 g/L, so that the pH value is not less than 10.

The obtained non-woven fabric is sewn into cloth bags or cloth strips, each cloth bag or cloth strip weighs 1-5 grams, respectively prepares water with a dye content of 0.5-3%, pours it into the washing machine, and adds 2-8 grams of sewn Add white cloth to the above cloth bag or cloth strip for mixed washing, the result is: the colored water becomes clear, but the white cloth is not stained, and the color absorption effect is obvious.

4 embodiments of the present invention are provided below:

Example 1

Prepare 6 g/L polyepichlorohydrin aminate aqueous solution, bath ratio is 15: 1, form pretreatment agent solution after being heated to 80 ℃, add sodium hydroxide to adjust pH value in this pretreatment agent solution, the addition amount is 5 g/L, so that the pH value is not less than 10. Then put the cleaned non-woven fabric into the pretreatment agent solution to react for 30 minutes, so that the hydroxyl groups of the non-woven fabric fibers are grafted with adsorption dye groups, and the modification is completed; take out the non-woven fabric and wash it with hot water Then wash in cold water and tumble dry. Finally, the dried non-woven fabric is made into cloth strips, and each cloth strip has a weight of 3 grams. Prepare water with 1% vat dye, mix 3 grams of cloth strips and white cloth into the water containing dye for washing, the white cloth is not stained, and the color absorption effect is obvious.

Example 2

Prepare 8 g/L polyepichlorohydrin aminate aqueous solution, bath ratio is 20: 1, form pretreatment agent solution after being heated to 90 ℃, add sodium hydroxide to adjust pH value in this pretreatment agent solution, the addition amount is 5 g/L, so that the pH value is not less than 10. Then put the cleaned non-woven fabric into the pretreatment agent solution to react for 35 minutes, so that the hydroxyl groups of the non-woven fabric fibers are grafted with adsorption dye groups, and the modification is completed; take out the non-woven fabric and wash it with hot water Then wash in cold water and tumble dry. Finally, the dried non-woven fabric is made into cloth bags, and each cloth bag is 5 grams. Prepare water with 1.5% vat dye, mix 5 grams of cloth bag and white cloth into the water containing dye for washing, the white cloth is not stained, and the color absorption effect is obvious.

Example 3

Prepare a 10 g/L polyacrylic acid aqueous solution with a bath ratio of 45:1, heat to 80°C to form a pretreatment agent solution, add sodium hydroxide to the pretreatment agent solution to adjust the pH value, and the addition amount is 6 g/L , so that the pH value is not less than 10. Then put the cleaned non-woven fabric into the pretreatment agent solution and react for 20 minutes, so that the hydroxyl groups of the non-woven fabric fibers are grafted with adsorption dye groups, and the modification is completed; take out the non-woven fabric and wash it with hot water. Then wash in cold water and tumble dry. Finally, the dried non-woven fabric is made into cloth strips, and each cloth strip is 1 gram. Prepare water with 3% vat dye content, mix 1 gram of cloth strips and white cloth into the water containing dye for washing, the white cloth is not stained, and the color absorption effect is obvious.

Example 4

Prepare a 7 g/L polyacrylic acid aqueous solution with a bath ratio of 55:1, heat to 100°C to form a pretreatment agent solution, add sodium hydroxide to the pretreatment agent solution to adjust the pH value, and the addition amount is 4 g/L , so that the pH value is not less than 10. Then put the cleaned non-woven fabric into the pretreatment agent solution and react for 50 minutes, so that the hydroxyl groups of the non-woven fabric fibers are grafted with adsorption dye groups, and the modification is completed; take out the non-woven fabric and wash it with hot water Then wash in cold water and tumble dry. Finally, the dried non-woven fabric is made into cloth bags, and each cloth bag is 4 grams. Prepare 2% vat dye water, mix 4 grams of cloth bag and white cloth into the water containing dye for washing, the white cloth is not stained, and the color absorption effect is obvious. Pretreatment agent formula.

Claims (2)

1. a use in washing machine is inhaled the manufacture method of look clean bag or cleansing bar, it is characterized in that adopting following steps:

1) preparation 5-10 grams per liter polyepichlorohydrin amine thing or polyacrylic aqueous solution bath raio is 15-55: 1, form pretreating reagent solution after being heated to 80-100 ℃;

2) add NaOH in this pretreating reagent solution and regulate the pH value, addition is the 2-7 grams per liter;

3) nonwoven fabric after will cleaning is put into step 2) solution reaction 20-50 minute;

4) the gained nonwoven fabric is sewn into cloth bag or cloth, each cloth bag or cloth weight are the 1-5 gram.

2. a kind of use in washing machine according to claim 1 is inhaled the manufacture method of look clean bag or cleansing bar, and it is characterized in that: nonwoven fabric is the viscose nonwoven fabric.