To test polyester lining fabric for colourfastness, cut a sample from your lot, rub it with a white cloth dry and wet, then wash it stitched against white fabric. Check the white fabric for colour transfer and the lining for fading. Compare both with an untouched piece, and record what you see.
Do this before you approve a bulk order. A lining that bleeds or fades can mark the outer fabric, spoil a finished garment and cost you returns. You can run these checks in your own unit with basic materials.
In this guide, we explain each test, what the results tell you and what to confirm before bulk production.
What Colourfastness Means for Polyester Lining Fabric
Colourfastness is a fabric’s ability to keep its colour under rubbing, washing, moisture, heat and light. For lining, it also means the dye stays put and does not move onto other fabrics.
Why does colourfastness matter for lining?
Lining sits against your outer fabric and against the wearer’s clothes. If the dye moves, it can stain a light outer fabric or the layer worn underneath. In suits and sherwanis, the interior is also visible, so uneven or faded colour shows.
What two problems do you look for?
- Fading: the lining loses colour after rubbing, washing or pressing.
- Colour transfer: the lining passes dye to another fabric.
A lining can pass one check and fail the other, so test for both.
Do darker shades need closer checks?
Often, yes. Deep shades such as black, navy and maroon usually carry more dye, so there is more that can move. We suggest you test every shade you plan to buy, not just one.
How to Test a Polyester Lining Sample for Colour Transfer
Place a sample of the lining against white fabric, apply moisture and friction or a wash, then check the white fabric for stains. This simple method shows you whether dye moves in conditions your garment may face.
What do you need?
- A sample cut from the lot you plan to buy
- White cotton cloth, or the lightest outer fabric you use
- Water and a mild detergent
- Thread and a needle
- A retained, untouched piece of the same lining for comparison
- Good daylight, and a grey scale if you have one
What are the steps?
- Cut the sample. Take it from the same shade and weave you intend to order.
- Cut a matching white piece. Use the same size as the lining sample.
- Stitch them together. Sew the edges to make a small composite.
- Wet or wash it. Follow the care label your garment will carry.
- Dry and separate. Let both layers dry fully before you judge.
- Compare. Check the white fabric for stains and the lining against your untouched piece.
- Record the result. Note the shade, lot, method and a photo.
What do the results indicate?
A clear stain or visible fade: do not approve. Raise it with your supplier.
Dry Rubbing, Wet Rubbing and Washing Tests Explained
These three tests look at different risks. Dry rubbing checks friction. Wet rubbing checks friction with moisture. Washing checks fading and staining during care.
| Test | How you run it | What it shows | What to flag |
| Dry rubbing | Rub a dry white cloth over the lining with steady pressure and the same number of strokes each time | Whether colour moves through friction | Colour on the white cloth |
| Wet rubbing | Repeat with a dampened white cloth | Whether colour moves with moisture, such as damp or perspiration | More colour on the cloth than in the dry test |
| Washing | Wash a composite sample, stitched with white fabric, as the care label directs | Fading of the lining and staining of the white fabric | Stained white fabric or a visibly paler lining |
How do you rate the result?
Many teams compare the change using a grey scale, where a rating of 5 means no change and 1 means a severe change. You can also judge by eye in good daylight against your untouched piece.
Your buyer may specify a test method and a minimum rating. If so, follow that. We do not set a pass mark for you, because the right one depends on your garment, your fabric and your buyer’s requirements.
What about dry cleaning?
If your garment will be dry-cleaned, a home wash test does not cover it. Ask a test lab or your dry cleaner to check the sample under dry-cleaning conditions.
Why Polyester Lining May Fade, Bleed or Stain Other Fabrics
Several factors can cause a lining to lose or pass on colour. These are general causes. Only testing tells you which one applies to your lot.
What causes colour to bleed or transfer?
- Loose dye on the surface: polyester is typically dyed with disperse dyes, and dye that is not fully washed off after dyeing can rub off or bleed later.
- Deep shades: more dye in the fabric means more that can move.
- Moisture: damp conditions and perspiration can help dye move onto other layers.
- Friction: rubbing against the outer fabric or the wearer’s clothes can lift colour.
What causes fading?
Fading can come from repeated washing, dry cleaning, heat, light exposure and harsh handling. Pressing and steaming in your own unit can also change a shade if the lining is sensitive to heat. We suggest you test your actual pressing conditions on a sample.
Why can a light outer fabric be at greater risk?
A small amount of transferred dye is hard to see on a dark outer fabric. On a white or pale one, the same amount shows clearly. That is why we suggest you test against the lightest outer fabric you use.
What to Check Before Approving Polyester Lining for Bulk Production
A passed sample test is a good start. These checks help you carry it through to bulk production:
- Test the exact lot and shade. Colour behaviour can differ between shades and dye lots.
- Test against your real outer fabric. Include the lightest one you use.
- Run all three tests. Dry rubbing, wet rubbing and washing each show something different.
- Test your own processes. Include pressing, steaming and any wash or finish your garment receives.
- Match the care label. Test the way the garment will be cleaned.
- Record and keep samples. Keep an untouched piece, the tested piece and your notes.
- Keep the same dye lot for reorders. Compare each new lot with your approved sample.
- Agree acceptance criteria. Settle the test method and minimum rating with your buyer before you order.
These steps help you catch problems early. They do not remove every risk, so keep inspecting once production starts. If a lot behaves differently from your approved sample, tell your supplier right away with your test notes.
Explore Polyester Lining Options with Double Ghoda
We are Double Ghoda, a trade name of B.C. Impex. We are a wholesale supplier and stockist, and we work with garment manufacturers and bulk buyers.
On our official page, we list jacquard, satin dobby, satin and taffeta options in a range of colours. We hold our colours in consistent dye lots, so you can reorder from the same batch, and we offer samples before bulk commitment. The page lists the care as dry clean compatible and wash-friendly.
Our page does not publish colourfastness test results. We encourage you to test your sample on your own fabrics and processes before you approve a bulk order, using the methods in this guide.
When you are ready, explore our polyester lining options and request a sample for your own tests.
FAQs
Is polyester suitable as a trouser lining?
It can be. Polyester suits trousers when its weight, weave, surface and care needs match the design and outer fabric. It is not automatically the best choice for every trouser, so confirm with a sample.
What type of lining is used for trousers?
Trousers may use full, half or front-panel lining, in materials such as polyester, viscose or cotton blends. The right type depends on the outer fabric, garment construction, intended use and desired finish.
What GSM is suitable for trouser lining?
There is no single GSM for all trousers. Lighter grades limit bulk and heavier grades add body. Choose weight alongside weave, outer fabric and construction, then confirm on a sample.
How should lining fabric be matched with trouser fabric?
Match the lining’s weight, weave and care routine to the outer fabric and the garment’s construction. Avoid pairing on weight alone. Make a sample trouser and check drape, seams and movement.
Link of related Articles
- Lightweight Interlining vs. Heavyweight Interlining
- A Beginner’s Guide to Interlining
- Choosing the Right Interlining
