The core reason for paper chip shedding is mainly related to two key process details: fiber bonding strength and surface treatment process. The characteristics of the raw materials themselves can also affect the final chip shedding situation through the process steps.

1. Key process one: Insufficient fiber bonding strength is the core cause of chip shedding

The paper structure of roll paper is interwoven with plant fibers, and the strength of the bonding between fibers directly determines whether it is easy to fall off and produce paper scraps during use. The process defects in this stage are mainly reflected in two aspects:

Inadequate pulping process: Beating is the process of breaking up, cutting, and raising the surface of raw fibers. High quality roll paper will make the fibers softer and have an increased surface area by precisely controlling the concentration, time, and strength of the beating process, thereby forming a stronger interweaving force. If the beating time is too short and the force is insufficient, the fibers may not be fully fuzzed, the bonding points between fibers are few, and the adhesion is weak. When used, a slight friction can easily cause breakage and detachment, resulting in a large amount of paper scraps.

Lack or insufficient gluing process: Gluing is a process of adding adhesive substances (such as starch glue) on the surface or between fibers, with the aim of enhancing the bonding strength between fibers and improving the water resistance of paper. In order to reduce costs, some cheap rolls of paper may reduce the amount of glue applied or even not apply glue, resulting in a lack of "adhesive" between fibers, loose structure, and easy detachment of fibers from the surface of the paper during wiping or rubbing, forming obvious chips.

2. Key process two: rough surface treatment, exacerbating chip shedding phenomenon

The smoothness and delicacy of the surface of the roll paper depend on the subsequent surface treatment process, and the roughness of the process will directly make the problem of chip shedding more prominent.

The calendering process is not perfect: calendering is achieved by rolling the paper with the roller of a calender machine, making the surface of the paper smoother and more even, while further compacting the fibers to reduce fiber looseness. If the calendering pressure is insufficient, the temperature control is improper, or the roller accuracy is insufficient, the surface of the paper will appear rough, the fiber arrangement will not be tight, and some fibers will be in a "loose" state. When used, these loose fibers will fall off and form paper scraps when rubbed against the skin or objects.

The cutting and rolling process is not precise: In the cutting process of rolled paper, if the cutting blade is not sharp enough or the cutting speed is too fast, burrs will appear on the edges of the paper, producing a large amount of fine fibers; If the tension is uneven during rolling, the adhesion between the layers of paper may not be tight, which can also cause the surface fibers to easily fall off. These flaws in the details of the manufacturing process can lead to the hidden danger of chip shedding in the roll paper before use.

In addition to the two core process details mentioned above, raw materials can also indirectly affect chip shedding. For example, the fiber length and strength of recycled pulp are relatively short, and even if the process is in place, the fiber bonding strength is not as good as that of virgin wood pulp or bamboo pulp, making it more prone to chip shedding; However, if the fiber screening is not strict for low-quality virgin pulp, it may contain short fibers and impurities, which will also exacerbate chip shedding.