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Explanation

The document explains the differences between migration/dye transfer and sublimation, highlighting that migration occurs at lower temperatures without requiring sublimation properties. It details the AATCC 163 test for migration, which assesses dye transfer under specific conditions, and contrasts it with a sublimation test that does not evaluate migration. Additionally, it suggests referencing other brands' testing methods to simulate real-world conditions for evaluating color migration in finished garments.

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11 views2 pages

Explanation

The document explains the differences between migration/dye transfer and sublimation, highlighting that migration occurs at lower temperatures without requiring sublimation properties. It details the AATCC 163 test for migration, which assesses dye transfer under specific conditions, and contrasts it with a sublimation test that does not evaluate migration. Additionally, it suggests referencing other brands' testing methods to simulate real-world conditions for evaluating color migration in finished garments.

Uploaded by

Nhàn Trần
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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Explanation: How Migration Differs from Sublimation/Dye Transfer

- Sublimation is a phenomenon where dye transitions directly from a solid state to a gaseous
state without passing through the liquid phase, typically occurring at high temperatures.
- Migration/Dye transfer: The color transfer phenomenon in storage occurs at much lower
temperatures and does not require the dye to have sublimation properties — hence, it is
considered a different mechanism.

1- AATCC 163: Migration/Dye transfer test: Allow 48h to remain at room temperature (24 ± 3°C)

- Purpose and Scope: control the movement of dye or colorant from one fabric area to another
when the storage of garments or materials on the production line both under poor conditions,
with high temperature and humidity.
- Reason: Dye transfer / Migration refers to the movement of dye or colorant from one fabric
area to another due to heat, moisture, or pressure, typically when fabrics are stored in contact
with each other over time.

Test processing: Prepare sandwich with the dyed test specimen between pre-wet standard
adjacent fabric and the pre-wet white fabric

Picture for reference

2- For the test method 80oC you are suggesting. As manual mention: Migration test.

- Purpose and Scope: This method is used to control sublimation, which is a phenomenon where
dye transitions directly from a solid state to a gaseous state without passing through the liquid
phase. This typically occurs at high temperatures and can cause the dyed fabric or printed areas
to change color.
- Reason: the dyed fabric or printed areas to change color or staining color at high temperatures

- Test processing: totally different with AATCC 163, this test is conducted only on the dyed test
specimen, without any contact with another fabric or standard adjacent fabric, also without
control Relative humidity; therefore, it cannot evaluate migration or dye transfer.

- Performing this test further under such conditions would be meaningless for what we want to
control.

Solution: Reference for Migration Testing on Finished Garments from Other Brands:

Testing methods from other brands can also be referenced for controlling migration of finished
garments. Their objective is to simulate the real-world conditions — such as temperature, humidity,
and pressure — that garments or components may be exposed to during shipment and/or storage, to
evaluate the risk of color migration between different fabric parts or layers.

Suggest more options:

Test processing: The fabric to test is in close contact with a standard adjacent fabric / or others fabric
(that will act like a revealer of potential migration) during:
- Time: 48hs under pressure
- Temperature 60°C
- Relative humidity 90%.

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