Wood pulp obtained by a combination of mechanical and chemical pulping processes

HS v2022 Code: 4705

About wood pulp obtained by a combination of mechanical and chemical pulping processes

HS code 4705 covers wood pulp produced through a combination of mechanical and chemical pulping processes. This type of pulp is an essential raw material for the paper and paperboard industry, which is a crucial sector within the broader manufacturing economy. The unique properties of 4705 wood pulp, such as its strength, opacity, and versatility, make it a highly sought-after input for a wide range of paper products, from printing and writing papers to packaging materials.

Production process

The production of 4705 wood pulp involves a two-step process that combines mechanical and chemical pulping methods. First, the wood raw material, typically softwood or hardwood logs, is mechanically ground or refined to break down the fibers. This mechanical process is then followed by a chemical treatment, such as the sulfite or kraft (sulfate) process, which further separates and purifies the cellulose fibers. The resulting pulp is then washed, screened, and may undergo additional processing steps before being ready for use in paper and paperboard manufacturing.

Production inputs

The main inputs required for the production of 4705 wood pulp include wood logs or chips, typically sourced from sustainably managed forests. Additionally, the chemical pulping process requires various chemicals, such as sulfur compounds, sodium hydroxide, and other reagents. Specialized machinery, including grinders, digesters, and washing equipment, is also essential for the mechanical and chemical processing of the wood raw material.

Production outputs

The primary output of the 4705 wood pulp industry is, of course, the wood pulp itself, which is then consumed by various 4801 Newsprint, in rolls or sheets, 4802 Uncoated paper and paperboard, of a kind used for writing, printing or other graphic purposes, and non-perforated punch-cards and punch tape paper, in rolls or sheets, other than paper of heading 4801 or 4803, 4803 Toilet or facial tissue stock, towel or napkin stock and similar paper of a kind used for household or sanitary purposes, cellulose wadding and webs of cellulose fibers, whether or not creped, crinkled, embossed, perforated, surface-colored, surface-decorated or printed, in rolls or sheets, and other paper and paperboard manufacturing industries 4805 Other uncoated paper and paperboard, in rolls or sheets, not further worked or processed than as specified in Note 3 to this Chapter. The versatility of 4705 wood pulp makes it a crucial input for a wide range of paper-based products.

Family tree for wood pulp obtained by a combination of mechanical and chemical pulping processes

    graph LR
    A["<a href='/classifications/hs/v2022/47'>47: Pulp of wood or other fibrous cellulosic material; recovered (waste and scrap) paper or paperboard</a>"]
A --> B["<a href='/classifications/hs/v2022/4705'>4705: Wood pulp obtained by a combination of mechanical and chemical pulping processes</a>"]

    A --> C["<a href='/classifications/hs/v2022/4701'>4701: Wood pulp, mechanical wood pulp</a>"]
A --> D["<a href='/classifications/hs/v2022/4702'>4702: Chemical wood pulp, dissolving grades</a>"]
A --> E["<a href='/classifications/hs/v2022/4703'>4703: Chemical wood pulp, soda or sulphate, other than dissolving grades</a>"]
A --> F["<a href='/classifications/hs/v2022/4704'>4704: Chemical wood pulp, sulphite, other than dissolving grades</a>"]
A --> G["<a href='/classifications/hs/v2022/4706'>4706: Pulps of fibres derived from recovered (waste and scrap) paper or paperboard or of other fibrous cellulosic material</a>"]
A --> H["<a href='/classifications/hs/v2022/4707'>4707: Waste and scrap of paper and paperboard</a>"]

    B --> I["<a href='/classifications/hs/v2022/470500'>470500: Wood pulp; obtained by a combination of mechanical and chemical pulping processes</a>"]


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