How to ensure the softness of 33cm Hot Stamping Embossed Lace Paper Towel? Is it achieved through specific fiber treatment?

The 33cm Hot Stamping Embossed Lace Paper Towel uses wood pulp as the main raw material, and achieves a balance between softness and strength by adjusting the ratio of long fibers to short fibers. Long fibers provide basic strength and toughness, while short fibers can increase the void ratio between fibers and improve softness. According to industry standards, the softness of plant fiber wet and dry dual-purpose tissues must be ≤180mN (single or double layer). To achieve this goal, the proportion of short fiber addition must be controlled within a range that can enhance softness without exceeding the powder loss rate due to insufficient fiber bonding (the standard stipulates ≤0.5%).
Fiber refining technology is used in the production process, and fine fluff is formed on the fiber surface through mechanical shearing and chemical treatment to reduce fiber rigidity. This process refers to the manufacturing experience of cotton soft towels, and improves the softness of touch by reducing the crystallinity of the fiber. At the same time, the fiber surface may be treated with silicone oil or plant-based softener to further reduce the friction coefficient.
The embossing process forms three-dimensional patterns on the surface of the tissue through a concave and convex mold, and an "air pillow" is formed in the uncompacted area. The air layer disperses the contact pressure and reduces the direct friction between the skin and the fiber. The thickness of the paper after embossing increases by 10%-15%, the gram weight distribution is more even, and the touch is softer.
The 33cm Hot Stamping Embossed Lace Paper Towel adopts patented embossing technology, and dynamically adjusts the start interval time and pressing force of the embossing unit to ensure that the embossing depth matches the elasticity of the fiber. When the difference between the finished product thickness and the raw material exceeds the preset threshold, the pressing force is automatically reduced to avoid fiber breakage; the local embossing method of steel on rubber is adopted to reduce overall fiber damage.
The hot stamping temperature is strictly controlled at 120-150℃, and transient heating technology is used to avoid high temperature causing carbonization and hardening of the fiber. The thickness of the hot stamping layer is ≤3μm to ensure that the flexibility of the substrate is not affected. The lace embossed pattern and the hot stamping pattern are arranged in the same direction to avoid local stress concentration caused by the intersection of the pattern. For example: the hot stamping lines are distributed along the embossed depression to reduce damage to the fiber structure.