Bobbin Winding
Bobbin winding is a finishing and packaging style in which ribbon, tape, cord, and similar items are wound to a fixed length around a cylindrical core for supply.
Contents6 sections
Definition and Overview
Bobbin winding is a supply form in which narrow-width materials are wound around a cylindrical core called a bobbin. It is not a term that indicates material name, weave, knit, or construction; it describes the winding style, unit, and packaging form at the time of sale or production.
In listings, it is shown together with the wound length per bobbin, such as "100 meter bobbin winding" or "1000 meter bobbin winding." For tape, confirm the width; for cord, also confirm the diameter or thickness.
Relationship to Materials and Structure
Being bobbin wound does not indicate the material or construction. It is used for a wide range of narrow-width materials, including various fibers such as cotton, polyester, and nylon, as well as woven tape, knit tape, braided cord, flat cord, and round cord.
For that reason, when ordering, confirm the blend ratio, construction, width or diameter, thickness, strength, stretch, and color as specifications separate from the bobbin-wound packaging form. In particular, for cord, even if the diameter is shown as the same, the firmness and feel can differ depending on whether it has a core and how it is braided.
Checking Dimensions and Quantities
Flat tape and ribbon are generally expressed by width in millimeters. Cord such as round cord is often indicated by diameter, and products with an inconsistent cross section may be handled as approximate values.
Required quantity is calculated by adding cutting loss, excess length at the start and end, and inspection allowance to the amount used per product. Because bobbin wound length affects the ordering unit, it is necessary to confirm not only the total required amount but also the number of bobbins needed.
- For tapes, confirm width, thickness, and edge shape.
- For cords, confirm diameter, whether there is a core, and the number of strands or braiding method.
- Confirm the wound length and whether it is sold by the piece.
Main Applications and Handling Notes
Bobbin-wound narrow-width materials are used for garment ties, piping, decoration, hanging cords, and reinforcement of facings and seam allowances. Because they can be taken out continuously in long lengths, they are easy to cut to the needed length during cutting and sewing processes.
Before use, check the winding set, stretch, shrinkage, and fraying at the cut end with the actual product. Since synthetic fibers that melt easily with heat allow end processing methods to be selected, while some materials are heat-sensitive, perform heat processing only after testing according to the material.
Shrinkage after washing, color transfer, and fuzzing or fraying due to friction differ depending on the material and construction. When sewing the product onto a garment, carry out washing and sewing tests together with the main fabric and check whether there is seam shrinkage or waviness.
Differences from Similar Terms
Hank winding is a packaging form in which materials are bundled into a looped skein. Unlike bobbin winding, during use it may be hung on a yarn stand or similar holder and unwound to prevent tangling.
Cut-to-length sales is a sales method in which the required length is specified for purchase. Bobbin winding refers to the winding style, so it may be sold by the bobbin or offered as cut-to-length.
Frequently Asked Questions
Is the length of bobbin winding the same as the length that can actually be used?
The stated wound length is a guideline for the supply amount per bobbin, but it is necessary to allow for excess length at the start and end and any excluded portions during inspection. For mass production, confirm the actual usage per product and calculate the required quantity including cutting loss.
Are bobbin-wound ribbons and cords woven, knit, or braided?
Bobbin winding indicates the packaging form, so the structure cannot be identified from it alone. Ribbons and tapes include woven and knit goods, and cords include braided cords and core-containing types. Confirm the material, construction, width or diameter separately in the product specifications.
