Paper Tube

Definition and Overview

A paper tube is a cylindrical core used to wind roll fabric or yarn. It is made by winding layers of paper together, and it helps preserve the rolled shape of fabric and prevent deformation during transport and storage. In trade documents, it may also be called a core tube.

It is not a term describing the quality or structure of the fabric itself, but a specification related to the presentation of the rolled goods. Fabric may be delivered as a roll wound on a paper tube, or it may be delivered in a different winding style such as half-folded.

Situations in Fabric Trading

When ordering fabric, arranging sample rolls, inspecting goods, or delivering to a cutting factory, whether a paper tube is included and its dimensions become items to confirm. When a roll is to be passed through a spreading machine or inspection machine as it is, the inner diameter must fit the machine shaft, which affects operability.

In yarn trading as well, a paper-tube winding indicates the winding form. Since winding weight alone may not show whether it is the total weight including the paper tube or the net weight of the yarn only, confirmation is needed when necessary.

• When placing an order, confirm whether the fabric will be delivered wound on a paper tube.
• When receiving goods, check for crushing, cracking, or wetness of the paper tube, as well as any effect on the fabric edges.
• When outsourcing processing or cutting, share whether the inner diameter can pass through the machine to be used.

Dimensions and Markings to Confirm

Paper tube specifications are generally confirmed by inner diameter, outer diameter, length, and wall thickness. The inner diameter is the dimension that fits onto the machine shaft, and the length is the dimension related to fabric width and edge protection during winding. Writing the unit in millimeters helps prevent misunderstandings.

For paper tubes used with fabric, many have an inner diameter of around 76 millimeters, but this is not a common standard. Because it varies depending on application, winding length, equipment, and trading partner, specify it based on the actual measurements of existing rolls or machines.

Points to Note in Transactions

If you simply say “with paper tube,” the inner diameter, length, strength, and winding direction are not shared. In particular, for wide fabric, heavy rolls, or shipments with long transport distances, insufficient paper tube strength or length can lead to collapse of the winding or damage to the edges.

A paper tube is packaging material, but in cutting and inspection processes it is also a component that supports the fabric. In purchase orders and specifications, confirm not only whether a paper tube is included, but also the required inner diameter, winding form, roll orientation, and whether edge protection is needed.

Difference from Similar Terms

Roll fabric refers to fabric that has been woven or knitted and wound into a roll, or to the fabric itself. A paper tube is the core around which that roll fabric is wound, and the two refer to different things. A roll is a unit used in fabric trading and management, or a wound piece of fabric, while a paper tube is one of its components.

Full roll and half-fold refer to the packaging form of the fabric, such as how it is folded or wound. Using a paper tube is closely associated with a full roll, but the winding form cannot be determined by the presence or absence of a paper tube alone.

Frequently Asked Questions