Choosing the thread is very important when making garments. Many people focus on fabric, design or machine speed.. Thread also plays a big role. If the thread is not right stitching can break, seams can. The final product may not look neat.
For manufacturers making this choice of choosing the right thread is the most important decision because knit and woven fabrics behave very differently. A thread that works well on woven fabric may not give the result on knit fabric. That is why understanding both fabric types is very useful before selecting thread.
First know the difference
Knit fabric is soft, stretchable and flexible. It is made by looping yarns. These fabrics move easily. Feel comfortable on the body. Deployed in making T-shirts, leggings, etc.
Woven fabric is different. It is made by crossing yarns under each other. It is usually more stable and less stretchy. These fabrics hold shape better offering a pretty structured look. Shirts, trousers, uniforms, etc are some examples where this fabric is used.
Why thread choice matters
Thread also affects parameters like seam strength, stitch quality, garment life and machine performance. Good thread helps the machine run smooth. It reduces breakage. Gives a clean finish. Inferior quality thread leads to missed stitches, puckering, thread snapping or seams that are not even.
So thread should match the fabric, stitch type, garment use and production conditions.
Best thread for knit fabrics
Knit fabrics stretch. So the thread used on them should also support movement. High stiffness of a thread causes the seam to crack when the fabric stretches. This is one of the common problems in knit garment production.
- Textured polyester thread
This is one of the options for knit fabrics. It is soft, bulky and flexible. Textured thread gives seam coverage and moves well with stretch fabrics. It is often used in overlock and coverstitch operations.
This thread is a choice for:
- T-shirts
- Activewear
- Undergarments
- Kidswear
- Stretch garments
It also feels soft against the skin, which’s a big plus for comfort wear.
- Core spun thread
Polyester corespun thread is also an option for knit fabrics. It usually has a polyester core and a soft outer cover. This gives both strength and softness. It performs well in sewing. Can handle production speed nicely.
Manufacturers use it when they want:
- Better seam strength
- Sewing
- Good appearance
- Breakage
It is useful for both regular knit garments and slightly heavier knit items.
- Polyester sewing thread
Spun polyester thread is widely used in garments too. It has strength, decent flexibility and works well in many stitching operations. It is cost effective and suitable for production.
For knit products this thread can do a very good job.
Best thread for woven fabrics
Woven fabrics are more stable. They do not stretch like knits. Because of this the thread can focus more on strength, durability and seam holding power.
- Spun polyester thread
This is one of the common thread types for woven fabrics. It is strong, reliable and suitable for garment categories. It gives stitching and works well on a wide range of woven materials.
It is commonly used for:
- Shirts
- School uniforms
- Workwear
- Trousers
- Light jackets
It is also easy to sew with. Gives good production efficiency.
- Core spun polyester thread
For garments that need more strength, core spun thread is a very smart option. It handles stress better than regular threads and performs well in fast sewing lines.
It is a fit for:
- Bottom wear
- Heavy shirts
- garments
- Utility clothing
This thread gives a balance of strength and good finish.
- Nylon or bonded polyester thread
For heavy woven products bonded thread can be useful. It is stronger. Made for tougher applications. It performs better in products that face pull and rough use.
It is often used in:
- Bags
- Denim
- Upholstery
- Shoes
- Heavy uniforms
This thread may not be needed for every woven garment. For hard use products it works very well.
Knit vs woven: what to remember
For fabrics, softness and stretch support are very important. The seam should move with the fabric. So softer and more flexible threads are usually better.
For woven fabrics, seam holding and durability matter. The thread should stay strong and stable. So stronger sewing threads often give results.
In words:
For knit fabrics: choose thread that is soft, flexible and stretch-friendly.
For fabrics: choose thread that is strong, stable and durable.
things manufacturers should check
Thread count: Finer fabrics need finer thread. Heavy fabrics need thread. If thread is too heavy for fabric it can damage the look. If it is too fine for fabric seam may not hold properly.
Needle compatibility: Thread and needle should work together. Wrong needle size can cause breakage skipped stitches or fabric damage.
Seam appearance: The final stitch should look clean. The thread should not create puckering or seam lines.
Wash and wear performance: The thread should stay strong after washing, ironing and daily use. This is very important for garment quality.
End use of garment: A sports t-shirt, formal shirt and industrial trouser all need sewing performance. Always choose thread based on product use.
Final words
There is no thread that is best for every fabric. Knit and woven fabrics need thinking. Knit garments need flexible thread that can move with the fabric. Woven garments need stable thread that can hold the seam properly.
For manufacturers choosing the thread means better sewing, fewer problems, better garment life and more customer satisfaction. A small decision in thread selection can make a difference in final product quality.
That is why thread should never be treated like an item, in production. It is one of the parts of making a garment strong, neat and dependable.
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