85.040 – Pulps – PDF Standards Store ?u= Wed, 06 Nov 2024 05:20:31 +0000 en-US hourly 1 https://wordpress.org/?v=6.7.1 ?u=/wp-content/uploads/2024/11/cropped-icon-150x150.png 85.040 – Pulps – PDF Standards Store ?u= 32 32 TAPPI UM 3:2015 ?u=/product/publishers/tappi/tappi-um-32015/ Wed, 06 Nov 2024 05:20:31 +0000 Determination of Useful Fiber in Bagasse
Published By Publication Date Number of Pages
TAPPI 2015-04-01 3
]]> This method describes a procedure for estimating the percentage of useful fiber, pith, and soluble matter in bagasse.

Pith and fiber occur in bagasse closely adhered together. Both of them, after swelling in water, become loose and can be effectively separated from each other by a washing and combining action on a sieve.

]]> TAPPI UM 253:2015 ?u=/product/publishers/tappi/tappi-um-2532015/ Wed, 06 Nov 2024 05:20:28 +0000 Laboratory Processing of Pulp (Ball or Pebble-Mill Method)
Published By Publication Date Number of Pages
TAPPI 2015-04-01 4
]]> This method concerns the processing of pulp by means of a laboratory ball or pebble-mill prior to forming handsheets for determining pulp behavior when subjected to beating [see also TAPPI T 200 "Laboratory Processing of Pulp (Beater Method)," TAPPI T 248 "Laboratory Beating of Pulp (PFI Mill Method)," UM 221 "Laboratory Processing of Pulp (Plate Refiner)," and UM 258 "Laboratory Processing of Pulp (Kollergang Method)"]. Only the furnishing and processing of the stock and the withdrawal and dilution of samples are described. The forming of sheets is described in TAPPI T 205 "Forming Handsheets for Physical Tests of Pulp," their physical testing in TAPPI T 220 "Physical Testing of Pulp Handsheets," and their classification in TAPPI T 233 "Fiber Length of Pulp by Classification."

This method has the advantage of small specimen size and good reproducibility of beating action.

]]> TAPPI UM 240:2015 ?u=/product/publishers/tappi/tappi-um-2402015/ Wed, 06 Nov 2024 05:20:27 +0000 Shive Content of Mechanical Pulp (Laboratory Flat Screen)
Published By Publication Date Number of Pages
TAPPI 2015-03-30 3
]]> The objective of this method is to determine the harmful shive content of mechanical pulps by screening on a laboratory flat screen.

]]> TAPPI UM 242:2015 ?u=/product/publishers/tappi/tappi-um-2422015/ Wed, 06 Nov 2024 05:20:27 +0000 Shive Content of Mechanical Pulp (Somerville Fractionator)
Published By Publication Date Number of Pages
TAPPI 2015-03-30 3
]]> This method for shive determination makes no attempt to classify the undesirable material in detail, but such a refinement should be within the reach of any user of the method if desired. The dimensional limits dividing acceptable mechanical pulp from objectionable material are arbitrary; this method has been designed to ensure as far as possible that no useful material is included in the rejects and that no objectionable material remains in the accepted pulp. Sulfite pulps, examined according to this method, give results in the order of 0.05% shives, an indication that few long fine fibers are included in the rejected portion of the pulp. Accordingly, the method may be used for mechanical pulp containing some machine broke.

]]> TAPPI UM 203:2015 ?u=/product/publishers/tappi/tappi-um-2032015/ Wed, 06 Nov 2024 05:20:26 +0000 Freeness of Pulp (Williams Tester)
Published By Publication Date Number of Pages
TAPPI 2015-04-15 3
]]> The Williams freeness tester provides a means of measuring freeness of stock from a beater or other refining equipment. The freeness is measured as the time (seconds) for drainage of 3 g of pulp in 1 L of water (0.3% consistency) through an 80-mesh wire screen.

]]> TAPPI UM 205:2015 ?u=/product/publishers/tappi/tappi-um-2052015/ Wed, 06 Nov 2024 05:20:26 +0000 Dirt in Pulp (Measured by Transmitted Light)
Published By Publication Date Number of Pages
TAPPI 2015-04-01 3
]]> This method supplements TAPPI T 213 "Dirt in Pulp," which measures dirt in mm²/m² (parts per million) as detected by reflected light by measuring dirt in actual dirt specks (above a given threshold value) as observed by transmitted light. This method is most often used on slush pulps, whereas T 213 is more often used on dry sheets. Either method, however, may be used with either type of pulp.

]]> TAPPI UM 200:2012 ?u=/product/publishers/tappi/tappi-um-2002012/ Wed, 06 Nov 2024 05:20:25 +0000 Brightness Loss of Bleached Pulp
Published By Publication Date Number of Pages
TAPPI 2012 4
]]> This method quickly measures the relative brightness loss of pulp by use of heat. This method does not necessarily agree with a more natural aging test over a longer period of time. This method has been used on kraft bleached pulps and may or may not be applicable to other pulps.

]]> TAPPI T 550 om-13:2013 Edition ?u=/product/publishers/tappi/tappi-t-550-om-13/ Wed, 06 Nov 2024 05:17:32 +0000 Determination of Equilibrium Moisture in Pulp, Paper and Paperboard for Chemical Analysis
Published By Publication Date Number of Pages
TAPPI 2013 3
]]> The procedure applies to pulp, paper, paperboard, and paper products, except those containing significan quantities of materials other than water that are volatile at 105 ±2°C, or less, or for materials that are oxidized or decomposed above 102°C.

]]> TAPPI T 412 om-16:2016 Edition ?u=/product/publishers/tappi/tappi-t-412-om-16/ Wed, 06 Nov 2024 05:16:50 +0000 Moisture in Pulp, Paper and Paperboard
Published By Publication Date Number of Pages
TAPPI 2016 3
]]> TAPPI T 412 om-16 applies to pulp, paper, paperboard, and paper products, except those containing significant quantities of materials other than water that are volatile at lower than 107C (224.6 F)or degrade above 103C (217.4F). Moisture is significant for economic reasons and for its effect on such properties as printability, shrinkage, dimensional stability, physical strength, and paper runnability.

This method should be followed to:

Determine the amount of moisture in a lot of pulp, paper or paperboard as an as received moisture.

Determine the amount of moisture in shipping containers.

Calculate results of analysis of the moisture content on the original weight of the specimen.

]]> TAPPI T 262 sp-18:2018 Edition ?u=/product/publishers/tappi/tappi-t-262-sp-18/ Wed, 06 Nov 2024 05:16:38 +0000 Preparation of Mechanical Pulps for Testing
Published By Publication Date Number of Pages
TAPPI 2018 3
]]> TAPPI T 262 sp-12 (R2018) describes a procedure for the preparation of mechanical pulps prior to physical testing.

It is for use with pressure groundwood, refiner mechanical, chemimechanical, thermomechanical, and chemithermomechanical pulps. It may also be used on any pulp sample taken downstream of the refiners (i.e., screens, cleaners, reject refiners, etc.).

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