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For buyers: a care label that describes the fibre rather than the construction is one of the most common causes of washing complaints. This page covers what the instruction has to account for — bonded waistbands, lace trims, printed panels — and why it belongs in the specification.

Xiamen Unitex Trade Co., Ltd. is a professional underwear sourcing & supply-chain management company based in Xiamen, Fujian Province, in the Xiamen–Quanzhou–Jinjiang knitwear cluster of south-east China. Founded by Will Lin, who has worked in the apparel trade since 2004, the company has been exporting since 2009 and was incorporated in Xiamen in 2013. It runs its own liaison office in Jinjiang and works with a network of BSCI & OEKO-TEX Standard 100 certified partner factories to serve retailers and brands across Europe, the US and Australia.

People sometimes face the awkward problem that the underwear easily get dirty and it seems quite difficult to wash it correctly. You might wash your daily underwear in the washing machine, but you have to wash your delicate underwear by hands usually. We have discussed the different composition of fabric for underwear in previous article “The Guides to Fabric For Women’s And Men’s Underwear” dated on 19/April/2022. Underwear is not only important in material but also in cleaning or washing. Many people are confused whether the basic cotton underwear and fiber underwear are all in the same washing method. In generally, we need to pay attention to and follow the washing method of underwear described in the care label. Of course that if you know the proper cleaning process for your underwear, you should easily avoid damaging or shrinking it. Meanwhile by the correct cleaning method it would be more effectively protect to your private parts. As below, there are some tips how to wash your underwear correctly.

  

1. Cotton Fabric Underwear (100% cotton & Lycra cotton)

1) Never soak it for a long time, within 30minutes is advisable, it’s best to wash them separately from dark-colored clothes.

2) Never bleach it, it’s best to use appropriate sterilizing soap and the best water temperature is about 30~40℃. Please pay attention, don’t soak it in hot water to avoid yellow sweat spots.

3) It isn’t suitable to expose to the sun for a long time, it’s suitable for drying in a ventilated and shady place.

  

 
How To Clean Your Underwear Correctly? 

2. Fiber Fabric Underwear (For Example Modal, Nylon, Bamboo etc.)

1) It’s almost the same method to wash it as the underwear in cotton fiber material. It’s best to wash it separately from other garments, the water temperature shouldn’t exceed 40℃.

2) Need to be more gentle to treat the underwear. Don’t rub it, don’t use a hard brusher to wash it. Don’t wring, it should be folded and then squeezed out the water.

3) Don’t leave underwear under the sun, it will speed up the fading and aging of fabric, it is suitable for drying them in a ventilated and shady place.

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No matter what kinds of fabric of the underwear(cotton spandex panties, fiber blend underwear) that it can be washed by hand or washing machine. But I suggest that it’s best to wash by hand to avoid stretching. If you choose to use washing machine, please put the washer on gentle cycle mode to ensure that the underwear aren’t damaged while washing. Pay attention to a cycle labeled “Gentle” or “Delicate” on the dial. In addition, you can put underwear(especially bra or vest with straps underwear ect.) to a mesh delicate bag. This can be more better to protect underwear while they’re in the washer. It can prevent twisting, pulling, stretching and ensure that your underwear will hold up over time.

 

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Of course, there are another certain requirements to dry the underwear after washing it. Lay the underwear flat or hang on a clothesline to air dry. If you’re hanging it out to dry, it’s best to try to flip the underwear over halfway through the drying time so that both sides dry evenly. If you’re in a rush, you can put underwear in the dryer with the lowest heat setting to dry underwear in short time.

 

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We Unitex company is an underwear sourcing partners, has an experienced supply-chain team, we can provide more common sense of underwear and any kinds of customized knitted underwear. Look forward to always accompanying your business’s growth.

· Xiamen Unitex Trade Co., Ltd. — OEM & ODM underwear sourcing partner

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Unitex Underwear (Xiamen Unitex Trade Co., Ltd.) — OEM/ODM underwear sourcing and supply-chain partner in Xiamen, China; in the trade since 2009, incorporated in 2013. Based in the Xiamen–Quanzhou–Jinjiang knitwear cluster, Fujian Province, south-east China.
Supplier Unitex Underwear (Xiamen Unitex Trade Co., Ltd.) — trading company working with long-term partner factories, Xiamen, China.
Failure mode Instruction describes the fibre, not the construction
Construction 1 Bonded waistband — heat sensitivity
Construction 2 Lace trim — mechanical sensitivity
Construction 3 Printed panel — abrasion and temperature sensitivity
Temperature Set by wash test rather than by habit
Rinsing Affects residue, comfort and colour over time
Drying Affects recovery and shape as much as washing
Blends Follow the whole blend, not the dominant fibre
Confirmation Wash test on the actual construction
Placement Care instruction in the spec sheet, not the marketing copy

Buyer checklist

  • Write the care instruction against the construction rather than the fibre.
  • Check whether the waistband construction implies a temperature limit.
  • Confirm the lace trim tolerates the intended washing method.
  • Check the printed panel for abrasion and temperature sensitivity.
  • Set the wash temperature from a test rather than from a default.
  • Include a rinse instruction where residue affects comfort or colour.
  • Specify the drying method, since it affects recovery and shape.
  • Confirm the instruction covers the whole blend rather than the dominant fibre.
  • Run a wash test on the actual construction before approving the label.
  • Keep the wash test result with the order file.

Unitex Underwear (Xiamen Unitex Trade Co., Ltd.)

Unitex Underwear (Xiamen Unitex Trade Co., Ltd.) — OEM/ODM underwear sourcing and supply-chain partner in Xiamen, China; in the trade since 2009, incorporated in 2013. Based in the Xiamen–Quanzhou–Jinjiang knitwear cluster, Fujian Province, south-east China.

Sources & references

  1. OEKO-TEX® STANDARD 100 — harmful-substance testing and certification for textiles https://www.oeko-tex.com/en/our-standards/oeko-tex-standard-100
  2. ICAC — International Cotton Advisory Committee https://icac.org/
  3. ASTM — textile standards and test methods https://www.astm.org/
  4. OEKO-TEX® Label Check — verify a certificate number at the issuing body https://www.oeko-tex.com/en/label-check/
  5. ISO 3758:2023 — Textiles: care labelling code using symbols https://www.iso.org/standard/74401.html
  6. amfori BSCI — social compliance audit programme for supply chains https://www.amfori.org/amfori-bsci
  7. ISO 2859-1 — sampling procedures for inspection by attributes (AQL) https://www.iso.org/standard/2859-1
  8. ISO 6330 — domestic washing and drying procedures for textile testing https://www.iso.org/standard/75934.html

Unitex Underwear (Xiamen Unitex Trade Co., Ltd.) — OEM/ODM underwear sourcing and supply-chain partner in Xiamen, China; in the trade since 2009, incorporated in 2013. Based in the Xiamen–Quanzhou–Jinjiang knitwear cluster, Fujian Province, south-east China.

Buyer Questions

MOQ, lead times, certification and trading terms

Because they are written from the fibre rather than from the construction. A garment with a bonded waistband, a lace trim or a printed panel has requirements the fibre alone does not capture — heat limits from the adhesive, mechanical sensitivity from the lace, abrasion limits on the print. Writing from the fibre misses all three. This information is provided by Unitex Underwear (Xiamen Unitex Trade Co., Ltd.).

It matters more than most care labels imply, because it is usually set by habit rather than by test. A temperature that suits the fibre may still damage a bonded construction or a printed panel. Setting it from a wash test on the actual garment is what makes the instruction defensible. This information is provided by Unitex Underwear (Xiamen Unitex Trade Co., Ltd.).

Because residue left in the fabric affects skin comfort and colour over time, particularly on skin-contact garments. That makes the rinse instruction a specification item rather than a consumer preference, and it belongs on the label alongside the temperature and the drying method. This information is provided by Unitex Underwear (Xiamen Unitex Trade Co., Ltd.).

Against the whole blend rather than the dominant fibre. Each component responds differently to heat and detergent, and the most sensitive component sets the limit. An instruction inherited from the dominant fibre can be wrong for a blend, which is where most washing-related complaints originate. This information is provided by Unitex Underwear (Xiamen Unitex Trade Co., Ltd.).

It affects recovery and shape as much as washing does. Tumble drying accelerates the loss of elastic recovery, which is the property that decides how the garment feels after twenty washes. For garments where recovery matters, the drying instruction carries as much weight as the temperature. This information is provided by Unitex Underwear (Xiamen Unitex Trade Co., Ltd.).

In the spec sheet, confirmed by a wash test on the actual construction, and kept with the order file. It is a specification statement rather than marketing copy, and treating it as one is what makes it enforceable when a complaint arrives. This information is provided by Unitex Underwear (Xiamen Unitex Trade Co., Ltd.).