FZ/T 01157-2021 PDF in English
FZ/T 01157-2021 (FZ/T01157-2021, FZT 01157-2021, FZT01157-2021)
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Textiles - Tests for colour fastness to flat abrasion - Screen wire method
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FZ/T 01157-2021: PDF in English (FZT 01157-2021) FZ/T 01157-2021
STANDARD OF TEXTILE INDUSTRY
OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 59.080.30
CCS W 04
Textiles -- Tests for colour fastness to flat abrasion -- Screen
wire method
ISSUED ON: DECEMBER 2, 2021
IMPLEMENTED ON: APRIL 1, 2022
Issued by: Ministry of Industry and Information Technology of PRC
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative references ... 4
3 Terms and Definitions ... 4
4 Principles ... 5
5 Equipment and materials ... 5
6 Atmosphere for humidity control and test ... 8
7 Samples ... 8
8 Test steps ... 8
9 Rating ... 9
10 Results ... 9
11 Test report ... 9
Textile -- Tests for colour fastness to flat abrasion -- Screen
wire method
1 Scope
This document specifies the method for the determination of the color fastness (frosting)
of various textiles to flat abrasion by the wire mesh method.
This document is applicable to all kinds of dyed or printed fabrics and their products,
especially for fabrics and products with poor dye penetration.
This document does not apply to the sanded, raised, flocked, loose-structured fabrics,
and easily damaged fabrics and their products after flat abrasion.
Note: This document introduces a fast way to simulate the gentle frictional movement of fabrics and their
products in actual use.
2 Normative references
The following documents are essential to the application of this document. For the dated
documents, only the versions with the dates indicated are applicable to this document;
for the undated documents, only the latest version (including all the amendments) is
applicable to this standard.
GB/T 250 Textiles -- Tests for colour fastness -- Grey scale for assessing change in
colour
GB/T 6529 Textiles -- Standard atmospheres for conditioning and testing
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1 Frosting
The phenomenon of local lightening of the color of the fabric due to abrasion during
use.
Note: Frosting is caused by the different fading ability of fabrics due to abrasion: the coloring ability of
various fibers in multi-component blended fabrics is inconsistent, and the fading ability after abrasion is
not consistent; frosting in the monofilament fabrics is mainly due to poor dye penetration.
4 Principles
Under the specified load, the sample is repeatedly rubbed with the wire mesh fixed to
the flat-grinding test head in multiple directions. Take the original sample as the
reference sample, and use the gray sample card to evaluate the discoloration of the
sample.
5 Equipment and materials
5.1 Tester for color fastness to flat abrasion
The tester for color fastness to flat abrasion shall meet the following conditions. The
schematic diagram of the structure is shown in Figure 1. The flat-grinding test head is
located above the reciprocating table:
a) Flat-grinding test head: It consists of a balancing head and an abrasive plate. The
abrasive plate can be equipped with stainless-steel wire mesh. The upper surface
of the balancing head has a fixed locating pin, which can be vertically loaded with
a 0~2.5 kg heavy hammer. One side of the heavy hammer has a groove, and the
other side has a fixed locating pin.
b) The reciprocating table consists of a circular sample clamper, a locking ring with
an inner diameter of ≥95 mm, a sample plate, and a pawl. Circular sample clamper:
The surface has a foam rubber pad with a diameter of (40±1) mm and a hardness
of (35±5) HA, and the lower surface of the foam rubber pad is fixed on a cylinder
with a diameter of (60±1) mm and a height of (20±1) mm; there shall be a groove
on the cylinder, and the lower surface of the cylinder is fixed on a circular plate
with a diameter of (110±1) mm. The upper part of the sample plate has a
transverse groove and the bottom has a vertical groove.
See Figure 2 for a schematic diagram of the placement sequence of the locking
ring, the circular sample clamper, etc.
c) Driving device: The speed is (115±15) times/min, and the linear motion stroke is
(25±1) mm; it can do reciprocating motion. When the pawl drives the sample
plate to rotate a circle on its center at a certain speed, the reciprocating table
reciprocates 100 times in a straight line.
d) Counter: It displays and records the number of tests, and the result is accurate to
1 time.
5.2 Wire mesh
Stainless steel material, 16 mesh, and wire fineness is (0.23±0.05) mm.
6 Atmosphere for humidity control and test
The atmospheric conditions for humidity adjustment and testing shall be performed
according to the standard atmospheric conditions specified in GB/T 6529, and the
samples shall be conditioned for at least 4 h.
7 Samples
Cut out 2 circular specimens from the samples after humidity conditioning, and the
diameter of each sample is not less than 108 mm.
The specimen shall be representative; the sampling shall avoid obvious defects such as
wrinkles and damage; the position of sampling shall be at least 100 mm away from the
edge of the cloth.
8 Test steps
8.1 Install the wire mesh on the abrasive plate, and fix both sides of the wire mesh with
side clamps. Use tension clamps to fix both ends of the wire mesh; adjust the front
tension clamp, so that the wire mesh is flat against the lower surface of the abrasive
plate; ensure that the surface of the wire mesh is flat. The warp of the wire mesh shall
be parallel to the length of the reciprocating table.
8.2 Place the first sample face up in the middle of the circular sample clamper, and then
place the conical sample holder on the sample; put the rubber O-ring into the groove of
the circular sample clamper from the conical sample holder; fix the sample, and the
surface of the sample shall be flat without deformation; then, remove the conical sample
holder.
8.3 Insert the circular sample clamper with the sample into the reciprocating table, and
fix the circular sample clamper with the locking ring.
8.4 Install a heavy hammer with a mass of (1135±5) g on the locating pin of the
balancing head, and make the pawl in contact with the vertical groove at the bottom of
the sample plate. Slowly lower the flat-grinding test head, so that the wire mesh on the
abrasive plate is just in parallel contact with the sample on the reciprocating table.
8.5 Set the number of tests to 1200 and start the test.
8.6 After the test, remove the circular sample clamper with the sample, and take out the
sample.
During the test, if the sample slips or slides, the test result shall be discarded, and
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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