BS EN ISO 801-1-1995 Pulps Determination of saleable mass in lots Pulp baled in sheet form《纸浆 成批销售质量的测定 板式成捆包装的纸浆》.pdf

《BS EN ISO 801-1-1995 Pulps Determination of saleable mass in lots Pulp baled in sheet form《纸浆 成批销售质量的测定 板式成捆包装的纸浆》.pdf》由会员分享，可在线阅读，更多相关《BS EN ISO 801-1-1995 Pulps Determination of saleable mass in lots Pulp baled in sheet form《纸浆 成批销售质量的测定 板式成捆包装的纸浆》.pdf（18页珍藏版）》请在麦多课文档分享上搜索。

1、BRITISH STANDARD BS EN ISO 801-1:1997 BS4747-1:1995 renumbered, incorporating Amendment No.1 Pulps Determinationof saleable mass in lots Part1: Pulp baled in sheet form The European Standard EN ISO801-1:1996 has the status of a British Standard ICS 85.040BSENISO801-1:1997 This British Standard, havi

2、ng been prepared under the directionof the Materials andChemicals Sector Board (I/-), was published underthe authorityof theStandards Board and comes into effecton 15January1995 BSI08-1999 First published August1980 Second edition January1995 The following BSI references relate to the work on this s

3、tandard: Committee reference PAI/11 Draft for comment91/45545 DC ISBN 0 580 23645 5 Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee PAI/11, upon which the following bodies were represented: British Carton Association Brit

4、ish Fibreboard Packaging Association British Printing Industries Federation British Textile Confederation Envelope Makers and Manufacturing Stationers Association Her Majestys Stationery Office Institute of Paper Conservation Paper Federation of Great Britain Pira International Post Office Universit

5、y of Manchester (Institute of Science and Technology) Co-opted members Amendments issued since publication Amd. No. Date Comments 9410 March1997 Indicated by a sideline in the marginBSENISO801-1:1997 BSI 08-1999 i Contents Page Committees responsible Inside front cover National foreword ii Foreword

6、2 1 Scope 3 2 Definitions 3 3 Principle 3 4 Apparatus 3 5 Sample bales 4 6 Procedure 4 7 Expression of results 7 8 Test report 9 Annex A (informative) Example of a full certificate of analysisand related calculations 10 Annex B (informative) Equipment for marking the position of the specimen sheets

7、in sample bales 12 Figure 1 Diagram indicating the position from which specimen sheets shall be taken 5 Figure 2 Diagram illustrating how test pieces of constantarea are to be cut from specimen sheets selected according to the diagram given in Figure 1 7 Figure 3 Diagram illustrating how test pieces

8、 with constant angle at the apex are to be cut from specimen sheets selected according to the diagram given in Figure 1 8 Table 1 Number of sample bales to be taken 4 Table B.1 Distance of specimen sheet from uppermost graduation line 12BSENISO801-1:1997 ii BSI 08-1999 National foreword This British

9、 Standard has been prepared by Technical Committee PAI/11 and is the English language version of EN ISO801-1:1996 Pulps Determination of saleable mass in lots Part1:Pulp baled in sheet form, published by the European Committee for Standardization (CEN). It is identical with ISO801-1:1994, published

10、by the International Organization for Standardization (ISO). It supersedes BS4747-1:1995, which is withdrawn. EN ISO801-1:1996 was produced as a result of international discussions in which the United Kingdom took an active part. EN ISO801-1:1996 has been approved by CEN member bodies under the weig

11、hted voting procedures introduced in1988 to coincide with the introduction of “New Approach” Directives from the Commission of the European Community. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their corre

12、ct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, theEN ISO title page, pages2 to12 and a back cover. This standard has been updated (see copyright

13、 date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO801-1 September1996 ICS 85.040 Descriptors: Paper pulps, sheets, tests, determination, dry matter, commercial mass, mass me

14、asurement English version Pulps Determination of saleable mass in lots Part1:Pulp baled in sheet form (ISO 801-1:1994) Ptes Dtermination de la masse marchande des lots Partie1: Balles de ptes en feuilles (ISO 801-1:1994) Zellstoffe Bestimmung es Handelsgewichtes von Lieferposten Teil1: Zellstoffboge

15、n in Ballen (ISO 801-1:1994) This European Standard was approved by CEN on1996-08-25. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists

16、and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsi

17、bility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, P

18、ortugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1996 All rights of reproduction and communication in any form and by any means res

19、erved in all countries to CEN and its members. Ref. No. EN ISO801-1:1996 EENISO801-1:1996 BSI 08-1999 2 Foreword The text of the International Standard from Technical Committee ISO/TC6, Paper, board and pulps, of the International Organization for Standardization (ISO) has been taken over as a Europ

20、ean Standard by Technical Committee CEN/TC172, Pulp, paper and board, the Secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by March1997, and conflicting national s

21、tandards shall be withdrawn at the latest by March1997. According to CEN/CENELEC Internal Regulations, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portuga

22、l, Spain, Sweden, Switzerland and theUnited Kingdom.ENISO801-1:1996 BSI 08-1999 3 1 Scope This part of ISO801 specifies a method for determining the dryness of a lot of pulp baled in sheet form and for calculating its saleable mass. This method is applicable to all kinds of pulp baled in sheet form.

23、 It does not apply to pulp baled in lots in slab form or to pulp baled in unitized lots. An example of a full certificate of analysis and related calculations is given in Annex A. Annex B gives details of equipment for marking the position of specimen sheets in sample bales. 2 Definitions For the pu

24、rposes of this part of ISO801, the following definitions apply. 2.1 lot the total number of bales of the same sort of pulp of specific characteristics the number of bales comprising a lot is indicated by the invoice or by agreement between the interested parties a lot of bales of pulp is said to be

25、“with specification” if it is accompanied by a certificate of origin stating for each bale either its gross mass(2.2) and its absolute dryness(2.4), or its saleable mass(2.7). 2.2 gross mass the total mass of a bale, a part of a lot or a lot comprising contents; wrappers (pulppaper); packaging wires

26、 or strappings. 2.3 oven-dry mass the mass obtained on drying pulp at105 C 2 C, until constant mass is reached 2.4 absolute dryness the ratio of the oven-dry mass(2.3) of the pulp to its initial mass, expressed as a percentage 2.5 air-dry mass the mass of the pulp when its moisture content is in equ

27、ilibrium with the ambient atmosphere 2.6 theoretical commercial dryness a conventional equilibrium value of88%or90%according to the country and/or commercial agreements 1) 2.7 saleable mass the gross mass(2.2) multiplied by the absolute dryness(2.4) divided by the theoretical commercial dryness(2.6)

28、. Usually, it approximates to the air-dry mass(2.5) 2.8 invoiced mass the saleable mass(2.7) indicated by the vendor on the invoice 3 Principle From the lot, sample bales are taken in number which is a function of the total number of bales in the complete lot and in accordance with a sliding scale.

29、These sample bales are weighed 2)and collected in groups of six bales. Five specimen sheets are selected from each sample bale under defined conditions. From each specimen sheet, a test piece is cut in the form of a triangle, as indicated in clause 6. The test pieces are weighed and dried to constan

30、t mass to determine their oven-dry mass(2.3). The saleable mass(2.7) of the lot is then calculated. 4 Apparatus 4.1 Scale, suitable for weighing the bales to an accuracy of at least1/1000. 4.2 Balance, suitable for weighing the test pieces to an accuracy of at least1/5000. The balance shall have a c

31、apacity of at least5kg and a sensitivity of0,1g. Its weighing pan (or weighing table) shall be wide enough to accommodate the test pieces so that they do not protrude outside the rim of the pan. NOTE 1As the test pieces are weighed when still hot, they cause an upstream flow of air around the weighi

32、ng pan and, in consequence, a negative error in the balance reading. This error is minimized if the pan is wide enough so that no part of the test pieces protrudes outside the rim of the pan. 1) If the air dryness is90%, the pulp contains90 parts by mass of absolutely dry fibres and10parts by mass o

33、f water. For an air dryness of88%, the corresponding figures are88 and12. 2) The mean of the gross mass of the sample bales is considered as being the mean of the gross mass of all the bales in the lot.ENISO801-1:1996 4 BSI 08-1999 4.3 Equipment, for marking the position of the specimen sheets to be

34、 selected (see Annex B) and the test pieces in these sheets, as well as for cutting them. 4.4 Equipment, for storing at least30test pieces to prevent them from gaining or losing mass before weighing. 4.5 Drying oven, with good ventilation, and capable of being controlled at105 C 2 C. 5 Sample bales

35、All the sample bales shall be representative of the lot and for this purpose, so far as possible, these bales should be selected at random from all parts of the lot. In the absence of any other agreement between the interested parties, the available part of the lot to be examined shall be not less t

36、han half the complete lot at the time of examination. If the bales have identification numbers relating to several series, the sample bales shall be selected as far as possible in proportion to the size of each of these series. The sample bales shall be intact and damaged as little as possible, and

37、shall not include bales showing signs of definite drying or wetting, as may happen with bales situated on the external faces of a stack; bales or wrappings of bales having deteriorated, or showing clear signs of accidental localized wetting or loss; bales carrying traces of previous sampling; bales

38、whose number is illegible or is not contained in the specification, if this is a lot specified bale by bale. The number of sample bales to be taken is given in Table 1. Above5000, the minimum number to be taken is100plus1%of the bales in excess of5000, the maximum number being200plus1%of the bales i

39、n excess of5000. In all cases, the total number of sample bales shall be a multiple of6. When the lot is relatively uniform, and the number of bales rejected (exclusive of bales from the outer faces of the stack) does not exceed10%of the minimum number of bales to be selected (see Table 1), then the

40、 minimum number shall be taken. Otherwise, the analyst shall decide, within the limits set in Table 1, the number of bales to be selected. For frozen pulp, the sampling shall be postponed until the bales have thawed, so that satisfactory test pieces can be cut from the sheets. Table 1 Number of samp

41、le bales to be taken 6 Procedure 6.1 Weighing of sample bales Determine the gross mass of each sample bale separately and report the results to an accuracy between1/500and1/1000;report, if possible, their marks and references in the order of their weighing. Check the scale (4.1) before the weighings

42、 and during the course of the operation. If the moisture content of the sheets of pulp serving as wrappers obviously differs from that of the rest of the bale, or if the wrappers are invoiced separately, test them separately in accordance with7.2. 6.2 Selection of specimen sheets Select five specime

43、n sheets from each sample bale, as specified below, as soon as possible after weighing. Total number of bales in lot Number of sample bales min. max. Up to100 101to200 201to300 301to400 401to500 501to600 601to700 701to800 801to900 901to1000 1001to2000 2001to3000 3001to4000 4001to5000 12 18 24 24 24

44、30 30 36 36 42 48 60 72 96 24 36 48 48 48 60 60 72 72 84 96 120 144 192ENISO801-1:1996 BSI 08-1999 5 Draw five sheets from each sample bale, the distance between the sheets being constant and equal to one-fifth of the total thickness of the bale (see the note). Do not take the sheets from the same p

45、ositions in each bale, but select them according to the procedure specified below and illustrated in Figure 1. In sample bale No. I, the first sheet is taken1cm from the extreme top, and the last sheet (the fifth) will be one-fifth of the thickness of the bale from the bottom. In sample bales Nos.II

46、,III,IV, V and VI, each sheet is taken from a slightly lower position (actually1/50 of the thickness of the bale) than the corresponding sheet of the preceding bale; thus, in sample bale No. VI, the first sheet will be taken1/10 of the height of the bale from the top, and the last sheet will be1/10

47、of the height of the bale from the bottom. The sample bale No. VII, being a part of the next group of six sample bales, will recommence the cycle and be treated in the same way as the sample bale No.I,etc. NOTE 2Pulp bales composed of sheets folded or in juxtaposition. Pulp sheets are sometimes deli

48、vered folded two or more times into laps to conform to the size of the bale. In such cases, the word “sheet” should be interpreted as applying to only one thickness of the lap. If several sheets are folded into one lap, the test piece should be drawn from the sample sheet defined above. It is advisa

49、ble to cut the pulp sheet(s) along the fold of the lap to determine the exact position from which the specimen sheet should be drawn. Where the bales are composed of two adjacent sheet piles, the two sheets in juxtaposition on the same level should be considered as constituting one specimen sheet. Select all specimen sheets very carefully, especially those within about5cm from the top and the bottom of the bale. The specimen sheets can be selected easily with the aid of an appropriately graduated measuring