Edgebanding plays a crucial role in furniture production, ensuring both aesthetics and durability. However, when using wide jumbo rolls (master rolls) that are slit into edgebands, a common concern arises: white marks on the edges. These marks can be particularly visible on ABS edgebands and somewhat noticeable on PVC ones. In this article, we will explain why these marks appear and why they are not an issue after the trimming process in automatic edgebanding machines.

How Our Edgebands Are Produced

Unlike single extrusion, where the edgeband is produced as a finished product in one step, our process involves:

    1. Producing Wide Jumbo Rolls (Master Rolls) – These are semi-finished products that serve as the base for our edgebands.

    2. Slitting the Jumbo Rolls – The rolls are cut into smaller edgeband sizes in our slitting machines.

Why Do White Marks Appear on the Edges?

When master rolls are slit, the cutting process creates slight abrasions or stress marks on the edges, leading to visible white lines, particularly in ABS material. This occurs because the surface tension and internal structure of the thermoplastic material react to the slitting blade.

Will the White Line Be Visible After Edgebanding?

The concern of final consumers is understandable: they worry that the white line will remain after the edgebanding process. However, this is not the case. Our edgebands are designed to ensure a seamless and uniform look after application. Here’s why:

    · The inside of our ABS and PVC edgebands is color-matched to the base and surface color.

    · We apply liquid inks to not only paint the surface but also the interior of the material.

    · During the trimming operation in automatic edgebanding machines, the white-marked edges are trimmed away, leaving a perfectly blended finish.

Seeing the Difference: Edgeband with and Without Trimming

To better illustrate this, we have prepared images comparing edgebands before and after trimming. The difference is clear: the white line that appears after slitting disappears completely after trimming, ensuring a flawless, high-quality finish.