Loading...
SITCSection 2
U.S. imports of unbleached coniferous chemical wood pulp, soda or sulfate (non-dissolving) (SITC 25141) totaled $12.7M in April 2026, traded with 3 countries.
Unbleached Coniferous Chemical Wood Pulp, Soda or Sulfate (Non-Dissolving) imports of $12.7M in April 2026 ran 43% above the year-to-date monthly average of $8.8M.
Last updated: April 2026 dataUnbleached coniferous kraft pulp — the workhorse of the soda/sulfate process applied to softwood species like pine and spruce — delivers the long fiber length and high tensile strength that make it indispensable for linerboard, sack kraft, and multi-wall bag paper. Its characteristic brown color reflects the absence of a bleaching stage, which also preserves more of the fiber's native strength. Because coniferous fiber length is a key performance driver for packaging grades, buyers specify species mix and kappa number (residual lignin) as part of purchase contracts.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Kappa number measures residual lignin content in the pulp after cooking. A lower kappa number indicates more complete delignification, which affects the pulp's bleachability and strength properties. For unbleached grades used in packaging, buyers specify kappa number to ensure consistent bonding strength and to predict how the pulp will perform on the paper machine.
Coniferous (softwood) fibers are significantly longer than hardwood fibers, which translates into superior tensile and tear strength in the finished sheet. This makes unbleached coniferous kraft the preferred furnish for demanding packaging applications like grocery sacks, cement bags, and heavy-duty linerboard, where hardwood pulp alone would not meet strength requirements.
Supplier Network
Get discovered by U.S. importers searching for HS 25141 — Unbleached Coniferous Chemical Wood Pulp, Soda or Sulfate (Non-Dissolving). Be the first supplier listed.
Monthly import values over time