GB/T 8944.1-2008Pulps -- Determination of saleable mass in lots -- Part 1: Pulp baled in sheet form or pulps (such as flash-dried pulps) baled in slabs (English PDF)

Foreword

GB/T 8944 "Determination of salable mass of pulp batch" is divided into two parts.

--- Part 1. Pulp pulp and pulp package (such as flash - dried pulp) package;

--- Part 2. combination package pulp.

This section GB/T 8944 Part 1.

The partial modification of the use of ISO 801-1:1994 "Determination of bulk sales of pulp quality - Part 1. Pulp pulp package" and ISO 801-2:1994 "Determination of salable mass of pulp batches Part 2. Pulps (such as flash - dried pulp) package." this part of ISO 801-1:1994 and ISO 801-2:1994 The main differences are as follows.

--- Canceled ISO 801-2:1994 Section 2 normative references;

--- Canceled ISO 801-2:1994 Annex B (informative) investigation report;

--- The ISO 801-1:1994, ISO 801-2:1994 international standard two merge the contents of the present section, this part of the ISO 801-1.

1994, ISO 801-2:1994 Number of control clauses in Appendix A.

This Part replaces GB/T 8944.1-1988 "bulk sales of pulp quality assay Part I. The pulp slurry package" and GB/T 8944.2-1988 "the second part of the pulp salable mass in lots Assay. Pulps (such as flash - dried pulp) package." this part of GB /and GB/T 8944.2-1988 compared to T 8944.1-1988 main changes are as follows.

--- Increase the preamble.

--- Chapter 1 is the GB/T 8944.1-1988 and GB/T 8944.2-1988 Chapter 1 merge.

--- Chapter 2 is GB/T 8944.1-1988 and GB/T 8944.2-1988 Chapter 2 merge.

Chapter 3 --- including GB/T 8944.1-1988 Chapter 3, Chapter 4, Chapter 5, Chapter 6, Chapter 7 content; wherein 3.2 the accuracy of the scale, accuracy and sense of balance amount has been modified; 3.4.3 adds a constant angle sampling, and to issue Procedure body; 3.4.4 sample was removed from the oven and weighed by the interval "1min" to "30s".

--- Chapter 4 contains GB/T 8944.2-1988 Chapter 3, Chapter 4, Chapter 5, Chapter 6, Chapter 7 content; wherein 4.4.5 the sample was removed from the oven and weighed at intervals by the "1min" to "30s".

--- Chapter 5 is GB/T 8944.1-1988 and GB/T 8944.2-1988 Chapter 8 content merge.

This section of the Appendix A, Appendix B, Appendix C, Appendix D are informative appendices.

This part is proposed by the China National Light Industry Council.

This part of the paper industry by the National Standardization Committee (SAC/TC141) centralized.

This section is drafted. Tianjin People's Republic of China Exit Inspection and Quarantine, China Pulp and Paper Research Institute.

1 Scope

This section GB/T 8944 illustrates the determination of pulp slurry package, pulp (such as flash - dried pulp) lump sum of detail, and calculates batch slurry pin the method of sale quality.

This section applies to a variety of packages and clumps of pulp slurry pulp package. This section applies to most of the pulp, pulp of each package is about 200kg, the End Identical and similar thickness of 4 to 6 (or stack) pulp blocks. This section also applies to blocks, although not by the pulp, but easy layering Pulp package. When drilling, if due to friction heat leads to a significant drilling apparatus, the method is not applicable, e.g., some or tough semi-chemical pulp Chemical pulp is there such a phenomenon.

This section does not apply to a combination of pulp package.

2 Terms and definitions

The following terms and definitions apply to this part of the GB/T 8944's.

Overall the same nature pulp slurry package, the contract package by the number of pulp made manifest or both.

When a batch of pulp each package are accompanied by the original certificate, then consider the syrup pack, have a certificate. The original certificate may be as follows Two situations.

--- Pulp package GW (2.2) and absolute dryness pulp package (2.4);

--- Quality pulp sales package (2.7).

A pack slurry, or batch number of the total mass of a portion of the pulp. Including. package contents, packaging (pulp or paper), packaged or wire bundle Taping.

Quality pulp drying to constant weight obtained at 105 °C ± 2 °C.

Oven dry mass (2.3) and not before drying quality ratio, in order to represent the mass fraction.

When the moisture content of the pulp and pulp balance the ambient air quality.

Traditional custom value, in accordance with national and/or commercial agreements are generally 90% or 88%. The air drying of 90% indicates that the pulp contains