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Equipment Description:Birch Hardwood Kraft To print this FactSheet click here To return to the FactSheet home page click here

Equipment Description:
Birch Hardwood Kraft
Date Added: 13 December 2005
This Fact Sheet has been viewed: 5989 times.

Distribution...	Scandinavia Russia Canada Europe
Fibre Types...	The most common birch species for Woodpulp production in Scandinavia and Russia are “Downy” birch(Betula pubescens), “Paper” birch(Betula papyrifera) and Betula veracosa. In Canada, “Yellow” birch(Betula alleghaniensis)is the main pulping species.
Fibre Properties...	Fibre Length mm 1.1-1.5 Fibre Width mm 16-22 Wall Thickness mm 3.0-3.6 Fibre Coarseness mg/m 114

Typical Pulp Properties...   Bleached ECF pulps are available. Birch hardwood kraft pulps are thin walled and the pulped wood has a relatively high hemicellulose content. These pulps refine quickly, producing a pulp which tends to be lower in opacity and bulk compared to eucalyptus hardwood kraft pulps, but higher in burst strength and tensile. Occasional poor sheeting of birch pulps at the pulp mill can result in the formation of hard fibre bundles. If such fibre bundles are present in the paper furnish, they can cause transparent spots(sometimes called “windows”, or “shiners” or “fisheyes”) when the paper is calendered. Such fibre bundles can also cause uneven dyeing in coloured papers.

Typical Uses...   Birch kraft pulps are often used interchangeably with other hardwood kraft pulps such as eucalyptus krafts in mixed softwood/hardwood furnishes. Typically birch pulps have been used in paper grades where extra tensile/burst strength and a good formation is required. Birch pulps are ideally suited for lightweight coated and uncoated “woodfree” printing papers and for coated silicone release papers, where the birch fibre provides a smooth surface with good hold out properties.

What else should I look at?... Birch Hardwood Kraft was also mentioned in the following Fact Sheets (27): Birch Hardwood Kraft :: Aspen Hardwood Kraft :: Hardwood BCTMPHW :: Southern Mixed Hardwoods Kraft :: Eucalyptus Camaldulensis Hardwood Kraft (also known as E. rostrata) :: Softwood BCTMPSW :: Canadian Softwood Kraft (Softwood "Sawdust" or "Minichip" Pulp) :: Northern Mixed Hardwoods Kraft :: Eucalyptus Grandis Hardwood Kraft :: Hardwood (beech) Sulphite :: Acacia Hardwood Kraft :: Eucalyptus Globulus Hardwood Kraft :: SCANDINAVIAN SOFTWOOD KRAFT :: Base Sheet :: Hardwood (eucalyptus) Sulphite :: Cooking :: Radiata Pine Softwood Kraft :: Stone Groundwood (SGW) and Pressurised Groundwood (PGW) :: Southern Pine Softwood Kraft :: Softwood Sulphite Pulp :: Canadian Softwood Kraft (West Coast, Interior British Columbia) :: Canadian Softwood Kraft (Eastern Canada, Central and Maritime Areas) :: Canadian Softwood Kraft (West Coast British Columbia) :: Mechanical Pulping :: Chemical Pulping :: Methods of Drying :: Sizing ::

Suppliers of content relevant to Birch Hardwood Kraft These 2 companies are suppliers of relevant equipment/services. (This information is from suppliers listed in the Industry Directory. Contact PITA to have your company listed here) M-real Alizay Pulp Mill :: Alizay :: FRANCE M-real Stockstadt :: Stockstadt :: GERMANY There are 0 other potential suppliers of relevant equipment/services. (This information is from suppliers listed in the Industry Directory Contact PITA to have your company listed here)