Bamboo Pulp vs. Wood Pulp: Prospects and Limitations of Non-Wood Fibers in Toilet Paper

II. Process Limitations: Technical Bottlenecks of Short Fibers and Rigid Structure

The physical drawbacks of bamboo pulp are equally apparent. Bamboo fibers typically range from 1.5 to 2.5 mm in length — significantly shorter than softwood pulp fibers at 2.5–4.0 mm — with thick walls, small lumens, high rigidity, and low natural crimp. This means limited hydrogen bonding area between fibers, resulting in tensile index and burst strength that are approximately 20%–30% lower than those of softwood pulp products. To compensate for insufficient strength, manufacturers are often forced to increase refining speed and pressure, but this further cuts the already short fibers, leading to a sharp rise in dust shedding rates. At the same time, the rigidity of bamboo fibers makes it difficult to form ideal micro-crepe structures during the creping process, resulting in paper that feels stiff and lacks bulk — toilet paper made purely from bamboo pulp often struggles to meet the softness expectations of mid-to-high-end markets. As a result, the current industry practice is to blend bamboo pulp with softwood pulp in ratios such as 3:7 or 4:6, but this correspondingly dilutes the "pure bamboo" eco-marketing value.