Sewing Machine Thread Count
The size designation for sewing thread is a way of categorizing and indicating the thickness of sewing thread on the product, and it serves as a guideline for selecting sewing thread suitable for the application and finished seam, together with factors such as material, twist, and ply count.
Contents6 sections
Definition and Overview
The thread count for sewing thread is a label used to indicate the thickness of sewing thread. In practice, it is also called the nominal count, and it serves as basic information when considering the appearance, strength, compatibility with the needle eye, and the look of the seam.
Thread count is a term used to roughly grasp thread thickness, and it does not by itself indicate the material or structure of the thread. Even with the same designation, thickness and feel may differ depending on the material, manufacturer, and product design.
How Thickness Is Expressed and How to Read Thread Count
The nominal count used for sewing thread generally means that the smaller the number, the thicker the thread, and the larger the number, the finer the thread. However, this is a practical guideline in sewing thread product labeling and not a rule common to all thread count systems.
In addition to thread count, there are other ways to express thread thickness, such as denier. Thread count is based on systems that use length per unit weight, while denier is a system that expresses weight per unit length. It is important not to confuse the meaning of the notation with the relationship between larger and smaller numbers.
- Thread count / nominal count: A thickness classification used when selecting sewing thread products.
- Denier: A notation of weight relative to length, mainly used for filament yarns.
- In actual selection, check not only the thread count but also the manufacturer's specification table and sewing tests.
Relationship with Material, Twist, and Structure
Even when the thread count is the same, the strength, stretch, heat resistance, luster, and dyeability will differ if the material changes, such as cotton, polyester, nylon, or silk. Select by combining the thread count and material according to the fabric material and the product's usage conditions.
Also, whether it is single yarn or ply yarn, filament yarn or spun yarn, and the direction and strength of the twist all affect the perceived thickness, fuzz, luster, and seam tightness of the thread. It is necessary not to judge thread performance by thread count alone, but to check the structure.
Main Applications and How to Choose
Finer thread is used for thin shirts, blouses, and areas where delicate seams are required. Thicker thread is used for heavy fabrics such as denim, decorative stitching that should stand out, and areas where strength is needed. Depending on the application, different thread counts may be used for the top thread and bobbin thread.
When selecting, comprehensively check the fabric thickness and density, seam type, needle size, sewing speed, and usage conditions such as washing and friction. Before mass production, make test stitches on the actual fabric and check for puckering, skipped stitches, and thread breakage.
Sewing Precautions and Differences from Similar Terms
If the thread is too fine, it may be difficult to obtain the required seam strength; if it is too thick, resistance at the needle eye may increase, which can damage the fabric or cause seam shrinkage. Set the sewing machine needle, needle eye, and thread tension to suit the thread, and check the seam balance.
"Thread count" may refer to a thickness notation for thread in general, but "thread count for sewing thread" and "nominal count" are notations used when selecting sewing thread products. Also, denier is a different thickness notation system, and numbers in the same value cannot be compared directly.
Frequently Asked Questions
Does a larger thread count number mean a finer sewing thread?
For the nominal count of sewing thread, generally the larger the number, the finer the thread, and the smaller the number, the thicker the thread. However, this is only a guideline for product selection. Because the actual thickness and strength differ depending on the material, structure, and each manufacturer's design, check the specification table and perform test stitching.
How do you choose the right thread count for the fabric?
Choose based on the fabric thickness, weave or knit density, how visible you want the seam to be, and the required strength. Fine thread may be used for thin fabrics, and thicker thread for heavy fabrics or decorative stitching. Because needle size, sewing speed, and thread tension also have an effect, sewing tests on the actual fabric are necessary.
Can any sewing thread be used the same way if the thread count is the same?
Even with the same nominal count, strength, elongation, fuzz, and heat resistance differ depending on the material, such as cotton or polyester, and the structure, such as single or ply yarn. Since compatibility with the fabric and sewing conditions also changes, do not judge interchangeability by thread count alone; check the material and application as well.
