Method for preparing powder fluff for electrostatic flocking from waste Cr-containing leather debris

An electrostatic flocking and powdery technology, applied in the field of leather, to achieve the effect of fine suede feel, good leather feeling, enhanced hand feeling and real leather feeling

Active Publication Date: 2016-12-21
滨州市科创孵化器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no relevant report on directly utilizing waste and old chromium-containing dander to make powdery fluff for electrostatic flocking

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The method for making powdery fluff for electrostatic flocking with waste chromium-containing dander comprises the following steps:

[0026] Step 1: crush waste chromium-containing dander into granular form, pass through a 100-mesh sieve, and dry to a water content of 50% to obtain granular material;

[0027] Step 2: drying the pellets obtained in Step 1 to a water content of 25% to obtain a dried material;

[0028] Step 3: Put the dried material obtained in Step 2 at 25°C and a relative humidity of 65% for 100 days, and pass through a 100-mesh sieve to obtain the screened material;

[0029] Step 4: Immerse the screening material obtained in step 3 in ethanol, add 0.08% hand feeling agent according to the mass of the screening material, stir for 35 minutes, and drain to obtain a primary treatment material;

[0030] Step 5: Put the primary treatment material obtained in step 4 in the tank, add 1.5% degreasing agent according to the mass of the screening material obtaine...

Embodiment 2

[0032] The method for making powdery fluff for electrostatic flocking with waste chromium-containing dander comprises the following steps:

[0033] Step 1: crush waste chromium-containing dander into granular form, pass through a 100-mesh sieve, and dry to a water content of 48% to obtain granular material;

[0034] Step 2: drying the pellets obtained in Step 1 to a water content of 20% to obtain a dried material;

[0035] Step 3: Put the drying material obtained in Step 2 at 20°C and a relative humidity of 60% for 105 days, and pass through a 100-mesh sieve to obtain the screening material;

[0036] Step 4: Immerse the screening material obtained in step 3 in acetone, add 0.05% hand feeling agent according to the mass of the screening material, stir for 30 minutes, and drain to obtain a primary treatment material;

[0037] Step 5: Put the primary treatment material obtained in step 4 in the tank, add 1% degreasing agent according to the mass of the screening material obtaine...

Embodiment 3

[0039] The method for making powdery fluff for electrostatic flocking with waste chromium-containing dander comprises the following steps:

[0040] Step 1: crush waste chromium-containing dander into granular form, pass through a 100-mesh sieve, and dry to a water content of 55% to obtain granular material;

[0041] Step 2: drying the granular material obtained in Step 1 to a water content of 30% to obtain a dried material;

[0042] Step 3: Put the drying material obtained in Step 2 at 26°C and a relative humidity of 70% for 95 days, and pass through a 100-mesh sieve to obtain the screening material;

[0043] Step 4: Immerse the screening material obtained in step 3 in ethyl acetate, add 0.1% hand feeling agent according to the mass of the screening material, stir for 40 minutes, and drain to obtain a primary treatment material;

[0044]Step 5: Put the primary treatment material obtained in step 4 in the tank, add 2% degreasing agent according to the mass of the screening mat...

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Abstract

The invention relates to a method for preparing powder fluff for electrostatic flocking from waste Cr-containing leather debris, and belongs to the technical field of leather. The method comprises steps as follows: the waste Cr-containing leather debris is ground into particles and dried; the particles are dried, left to stand for 95-105 days and screened; the particles are immersed in an organic solvent, a feeling agent is added in terms of the mass of a screened material, the mixture is stirred for 30-40 min, and a liquid is drained; the product is placed in a cylinder, and a degreasant is added for operation in terms of mass of the screened material, a penetrate is added for operation, sodium bicarbonate, sodium formate and sodium citrate are added for operation, dye is added, a color fixing agent is added for operation, sodium chloride is added for operation, a slipping agent is added for operation, the product is taken out of the cylinder, dehydrated and dried continuously, and the powder fluff for electrostatic flocking is obtained. The powder fluff for electrostatic flocking, prepared with the method, feels smooth and fluffy, and an electrostatic flock product is endowed with good leather feel.

Description

technical field [0001] The invention belongs to the technical field of leather, and in particular relates to a method for making powdery fluff for electrostatic flocking by using waste and old chrome-containing dander. Background technique [0002] my country is a big country of tannery, which produces millions of tons of leather waste every year, about half of which are chromium-containing dander. The early chromium-containing dander mainly adopts traditional waste disposal methods: landfill or incineration, which has brought great harm to the environment. With the gradual strengthening of environmental protection awareness, traditional treatment methods have been gradually eliminated, and people are gradually adopting recycling methods to deal with chromium-containing dander, which can not only reduce the harm to the environment, but also save costs. [0003] At present, the recycling methods of chrome-containing dander are mainly divided into dechrome recovery and non-de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06B21/00D06B9/04D06B9/02D06P1/00D06P5/02D06M11/76D06M13/188D06M13/207D06M13/256D06M11/13
CPCD06B9/02D06B9/04D06B21/00D06M11/13D06M11/76D06M13/188D06M13/207D06M13/256D06M2200/50D06P1/002D06P5/02
Inventor 许金针许婷婷许婉妮
Owner 滨州市科创孵化器有限公司
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