How does temperature and humidity affect the softness and quality of portable baby wipes?

In the production process of portable sensitive organic mini baby wipes, precise control of temperature and humidity parameters is the key link to ensure the softness and quality of the product, and its importance runs through the entire chain from raw material processing to finished product output. Baby skin is extremely delicate and has strict requirements on the touch and texture of the contact objects. The softness of wet wipes is not only related to the user experience, but also an important guarantee to protect baby skin from irritation.

Starting from the processing stage of raw fiber, temperature and humidity play an indispensable role. Natural fibers used to make baby wipes, such as organic cotton and bamboo fiber, have certain flexibility and water absorption, but these characteristics will change with changes in ambient temperature and humidity. In the fiber pretreatment process, if the ambient temperature is too high, the moisture in the fiber will evaporate quickly, causing the fiber to dry and harden, and the internal structure to become fragile; insufficient humidity will also accelerate water loss and destroy the natural flexibility of the fiber. On the contrary, too high humidity may cause the fiber to absorb water excessively and swell, which not only affects the molding effect of subsequent processing, but also may breed microorganisms and affect product hygiene and safety. Therefore, the production workshop needs to control the temperature and humidity in an appropriate range to keep the fiber at a moderate moisture content and maintain its natural soft texture, laying a good foundation for subsequent processing.

Entering the production process of spunlace non-woven fabrics, the precise control of temperature and humidity is even more critical. The spunlace process uses high-pressure water flow to impact the fiber web, causing the fibers to entangle with each other to form a non-woven fabric with certain strength and flexibility. In this process, the ambient temperature affects the pressure and speed of the water flow, as well as the physical properties of the fiber. If the temperature is too high, the impact of the water flow will increase, which may cause the fiber to break, destroy the fiber structure, and reduce the softness of the wet wipes; if the temperature is too low, the water flow power is insufficient, the fiber entanglement is insufficient, and the strength and softness of the wet wipes will be affected. The influence of humidity is also significant. When the humidity is appropriate, the water molecules on the fiber surface can play a lubricating role, making it easier for the fibers to slide and entangle with each other during the hydroentanglement process, forming a uniform and dense structure; when the humidity is too low, the friction between the fibers increases, making it difficult to effectively entangle, and the texture of the wet wipes will become rough; when the humidity is too high, the fibers are too wet, and it is not easy to dry after hydroentanglement, which increases the difficulty and energy consumption of the drying process, and may also cause the deformation of the fibers during the drying process, affecting the softness.

When adding natural softeners for post-treatment, the control of temperature and humidity is also crucial. Natural softeners penetrate into the fibers and change the bonding force between the fibers, thereby improving the softness of wet wipes. Temperature determines the activity and diffusion rate of softener molecules. When the temperature is too low, the softener molecules move slowly and it is difficult to fully penetrate into the fibers, and the expected softening effect cannot be achieved; when the temperature is too high, the softener may be lost due to excessive volatilization, and high temperature may cause thermal deformation of the fibers, reducing softness. Humidity affects the degree of fiber absorption of softener. Appropriate humidity can make the fiber in a moderate expansion state, which is conducive to the absorption and diffusion of softener; too high or too low humidity will affect the combination efficiency of fiber and softener, and then affect the final softness of wet wipes.

In the final drying and packaging process, temperature and humidity control still cannot be relaxed. During the drying process, too high temperature will cause the fiber to lose water quickly, causing it to become hard and brittle; too low temperature will prolong the drying time, increase production costs, and may also cause microbial growth due to residual moisture. At the same time, the wind speed and wind direction during drying must also be coordinated with the temperature and humidity to ensure that the wet wipes are dried evenly and avoid local overheating or overhumidification. The packaging process also has strict requirements on the ambient temperature and humidity. If the humidity of the packaging environment is too high, the dried wet wipes may reabsorb moisture and create conditions for microbial growth; if the humidity is too low, the dry air will further extract moisture from the wet wipes and reduce softness. Therefore, in the packaging workshop, the temperature and humidity must be strictly controlled within a stable range to ensure that the quality of the wet wipes is not affected during the packaging process.