How to Use Fusible Interlining?

What Is Fusible Interlining?

Fusible interlining is an interlining with a heat-activated adhesive coating on one side. When heat and pressure are applied, the adhesive melts and bonds the interlining to the outer fabric.

It is widely used in modern garment production because it:

  • Saves sewing time

  • Improves production efficiency

  • Provides stable shape support

However, correct usage matters a lot. Even good interlining can fail if fused incorrectly.

What You Should Prepare Before Fusing

Before starting the fusing process, a few basic checks can prevent many problems later.

Check the Fabric and Interlining Compatibility

Not all interlinings work well with all fabrics. You should confirm:

  • Fabric composition (cotton, polyester, blends, stretch)

  • Fabric heat resistance

  • Interlining coating type (PA, PES, EVA, etc.)

Pre-Test Is Always Recommended

Always do a small sample test before bulk production to check:

  • Bonding strength

  • Fabric appearance

  • Shrinkage after washing

Step-by-Step: How to Use Fusible Interlining

Step 1: Identify the Adhesive Side

The adhesive side usually feels rough or slightly grainy.
Place this side against the wrong side of the fabric.

Step 2: Set the Correct Temperature

Different coatings require different temperatures.

Coating Type Typical Fusing Temperature Notes
PA 130–150°C Strong bonding, widely used
PES 150–170°C Higher heat resistance
EVA 110–130°C Softer bonding
TPU 120–140°C Elastic applications

Always follow supplier recommendations and fabric limits.

Step 3: Apply Pressure Evenly

Use a fusing press or iron to apply:

  • Even pressure

  • Stable temperature

  • Full surface contact

Uneven pressure can cause partial bonding or bubbling.

Step 4: Control Time

Typical fusing time ranges from 10–20 seconds, depending on:

  • Fabric thickness

  • Interlining weight

  • Coating type

Too short → weak bonding
Too long → fabric damage

Step 5: Cooling and Setting

After fusing, let the fabric cool naturally on a flat surface.
Do not move or stretch the fabric immediately, as this may weaken bonding.

Common Problems and How to Avoid Them

Bubbling

Usually caused by:

  • Temperature too low

  • Insufficient pressure

  • Fabric shrinkage

Solution: adjust temperature and test pre-shrunk fabrics.

Poor Bonding Strength

Often due to:

  • Wrong coating selection

  • Short fusing time

Solution: change coating type or extend fusing time slightly.

Fabric Shine or Damage

Usually caused by:

  • Excessive heat

  • Direct iron contact

Solution: use a pressing cloth or lower temperature.

Where Is Fusible Interlining Commonly Used?

Fusible interlining is widely applied in:

  • Shirt collars and cuffs

  • Plackets

  • Jacket fronts

  • Waistbands

  • Blouses and dresses

It is suitable for both woven and nonwoven interlining types.

How to Choose the Right Fusible Interlining for Easy Use

To make fusing easier and more stable, buyers usually consider:

  • Matching interlining stiffness with fabric weight

  • Choosing correct adhesive coating

  • Checking washing requirements

  • Confirming production equipment conditions

Correct selection reduces rework and quality complaints.

FAQ

Can fusible interlining be used with an iron instead of a press?
Yes, for small-scale production. Industrial presses are recommended for consistency.

Does fusible interlining work on stretch fabrics?
Yes, but elastic or knitted interlining should be used.

Should fusible interlining be pre-shrunk?
High-quality interlining is usually pre-stabilized, but testing is advised.

Why does fusible interlining peel off after washing?
This is often caused by incorrect fusing temperature or incompatible coating.

Can fusible interlining be reused?
No. Once fused and removed, it cannot be reused.

Why Choose Us for Fusible Interlining

  • Wide range of fusible interlining options

  • Stable bonding performance

  • Support for fabric matching and testing

  • Competitive pricing for export markets

  • Experience working with global garment factories

Contact Us

If you would like to learn more about our interlining products or need support in choosing the right solution for your garments, feel free to contact us. Shanghai Uneed Textile Co., Ltd is always happy to discuss your requirements and provide professional suggestions.
TEL: +86-21-33608891
FAX: +86-21-33608892
Email: info@uneed-tex.com

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