PU Color Chip

Model:NPU series
Main Purpose
Dry Polyurethane Leather (PU Artificial Leather), environmental Color Chip Pigments for tinting, changing color and printing.
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Product Introduction

Jiuhlih Brand’s NPU-CHIP is developed successfully under years of research by professionals, and fits human’s evaluation of environmental consciousness and relevant security standard requirements. It is made through craft procedure of mixture, compounding and crushing via special equipments by applying suitable pigments with selected environmental resin and proper processing additives. With no heavy metal (comply with regulation EN-71 part3-1994), no Phthalates (6P), and no migration out of azo Aromatic Amine. It’s green environmental chip-form colorant without hazardous toxicant such as PVC, VCM, Toluene. Please select and use with ease.


Features & Benefits

High concentration, less amount for use, high brightness, good dispersion and diffusivity, good fastness, no contamination, no wastage, no odors, no caking, no heavy metal, good quality stability, easy to be precisely measured, low cost of tinting, convenient to store and use, and long-term storage.


Catalog




Operation Procedure
PU Compounding (Viscosity: 5000CPS±5%)

Tinting Usage for Color Pattern Sheets
Full
 
Organic Pigments
Inorganic Pigments
Black Pigments
White Pigments
PU Compound
100
100
100
100
NPU Chip Color
4
5
4
10

Tint
 
Organic Pigments
Inorganic Pigments
Black Pigments
White Pigments
PU Compound
100
100
100
100
NPU Chip Color
1
2
0.5
10
NPU 4560 - White
5
5
10
NPU 4550 - Black
0.5

※ Coating and Oven Condition: 0.18mm x 125°C x 3 Mins

Method of Testing for Physical Property

Testing of Light Fastness:
Take pieces of general color pattern sheets to put them into the Fade-o-Meter for light exposure. Afterward, take out the test pattern sheets to assess their degrees of light fastness against a standard Blue Scale which is assigned to value from 1 to 8. Level 8 is the outstanding (color will not be changed) and Level 1 is very poor (color is changed severely).
Testing for Heat Resistance:
Take pieces of general color pattern sheets and put them into an oven under a condition of 180℃ ± 2℃ for 30 min. Then take out the test pattern sheets to inspect their degree of color changing (degree of color fading). Afterward, assess the results for their degrees of heat resistance against a standard Gray Scale which is assigned to value from 1 to 5. Level 5 is the most excellent (color will not be changed) and Level 1 is the worst (color is changed severely).
Testing for Migration:
Take pieces of general color pattern sheets sandwiched in between two pieces of white color pattern sheets, and put the whole structure into an oven under a loading pressure of 3KG on the top for 80°C x 24 hours. Then take them out finally to inspect the degree of migration on the white color sheets surface against a Scale which is assigned to value from 1 to 5. Level 5 is the most excellent (no migration) and Level 1 is the worst (severe migration).
Testing for Acids or Alkalis Resistance:
Take pieces of general color pattern sheets and dip it into the bath of 5% HCI or 10% NaOH for 24 hours. Then take out the test pattern sheets to inspect their degree of color changing against a Scale which is assigned to value from 1 to 5. Level 5 is the most excellent (color will not be changed) and Level 1 is the worst (color is changed severely).
Testing for Sulfur Resistance:
Take pieces of general color pattern sheets and place them on the top of a H2S (Hydrogen Sulfur) generator. Then cover them with a flat piece of glass on top for pressing for 15 minutes. And then take out the test pattern sheets to inspect their degree of contamination against a Scale which is assigned to value from 1 to 5. Level 5 is the most excellent (was not contaminated at all) and Level 1 is the worst (was contaminated severely).

Level for Pigment Physical Property

1.Light Fastness

Scale
Result
8
Outstanding
7
Excellent
6
Very Good
5
Good
4
Fairty Good
3
Poor
2
Poor
1
Very Poor

2.Scale of Heat Resistance, Migration, Resistance to Acids or Alkalis, and Resistance to Sulfur.

Scale
Result
5
Very Good
4
Good
3
Fairty Good
2
Poor
1
Very Poor
※Remark: The Scale of Fastness for comparison is very important in the proper selection of appropriate pigments for coloring processes. Conditions of processing, end-uses application fields and the required properties of the finished product should be consulted before making a final selection of the optimal pigments.

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