1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA
2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any
3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ISBN 978-0-626-20626-0 SANS 733:2008Edition 2.1Any reference to SABS 733 is deemed to be a reference to this standard(Government Notice No. 1373 of 8 Nov
4、ember 2002)SOUTH AFRICAN NATIONAL STANDARD Boxboard (metric units) Published by Standards South Africa 1 dr lategan road groenkloof private bag x191 pretoria 0001 tel: 012 428 7911 fax: 012 344 1568 international code + 27 12 www.stansa.co.za Standards South Africa SANS 733:2008 Edition 2.1 Table of
5、 changes Change No. Date Scope Amdt 1 2008 Amended to change the designation from SABS to SANS, with no technical changes. Foreword This South African standard was approved by National Committee StanSA SC 5110.12D, Paper and board for packaging Boxboard, in accordance with procedures of Standards So
6、uth Africa, in compliance with annex 3 of the WTO/TBT agreement. This document was published in March 2008. This document supersedes SABS 733: 1972 (first revision). SANS 733:2008 Edition 2.1 1 Contents Page Foreword 1 Scope . 3 2 Definitions 3 3 General requirements 4 4 Specific requirements . 5 5
7、Packing and marking 10 6 Sampling and compliance with the specification 11 7 Inspection and methods of test 12 7.1 Conditioning of test specimens . 12 7.2 Inspection 12 7.3 Measurement of dimensions . 13 7.4 Calliper 13 7.5 Basis mass 13 7.6 Tensile breaking length . 14 7.7 Folding quality . 15 7.8
8、Surface strength 15 7.9 Brightness . 16 7.10 Gloss . 16 7.11 Water absorptiveness 17 7.12 Stiffness . 18 Appendix A Notes to purchasers 19 SANS 733:2008 Edition 2.1 2 This page is intentionally left blank SANS 733:2008 Edition 2.1 3 Boxboard (metric units) 1 Scope 1.1 This specification covers requi
9、rements for the following types of machine-finished boxboard: Type 1: White-lined board Type 2: White machine-coated board Type 3. Manilla-lined board (folding and semi-folding) Type 4: Kraft-lined board Type 5: Chipboard (lined and unlined) Type 6: Rigid-board (lined and unlined) NOTE Requirements
10、that must be specified by the purchaser and a requirement that must be agreed upon between supplier and purchaser are listed in appendix A. 2 Definitions For the purposes of this specification the following definitions shall apply: boxboard board paperboard that is intended for use in the manufactur
11、e of boxes and cartons (rigid and folding) chipboard board made from any mixed waste paper or any other fibrous material or both cross direction CD direction of a board at right angles to the machine direction defective unit or a test unit that fails in one or more respects to comply with the releva
12、nt requirements of the specification kraft-lined board machine-lined board in which the furnish of the top liner (or of both liners) contains a proportion of virgin kraft fibre or of used kraft fibre or both SANS 733:2008 Edition 2.1 4 lot quantity of board of the same type and size, packed in the s
13、ame type of unit, and bearing the same identification reference from one manufacturer, submitted at any one time for inspection and testing machine direction MD direction of a board corresponding to the direction of flow of the stuff on the board machine machine-lined board chipboard to which one or
14、 two liners is/are applied on the board machine during the process of formation of the board manilla-lined board machine-lined board of which the top liner is (or both liners are) made of unbleached wood fibres rigid-board non-folding chipboard dry-finished on both sides test unit at least 0,5 m2of
15、board taken for test top liner liner that has the better quality and that is usually on the outside of boxes and cartons unit a reel, a pallet, or a bundle white-lined board machine-lined board in which the fibre furnish of the top liner (or of both liners) consists entirely of bleached fibres white
16、 machine-coated board white-lined board, clay-coated on the board machine during the process of manufacture to improve the surface finish of the board 3 General requirements 3.1 General The board shall be reasonably free from hairs, spots, dust and fluff. 3.2 Dimensions 3.2.1 Boxboard in reels The w
17、idth of boxboard supplied in reels shall be at least 50 mm and shall be as specified by the purchaser, subject to the appropriate of the following tolerances: a) if 0,5 % of the specified width is not less than 3 mm and not greater than 6 mm: 0,5 % of the specified width; b) if 0,5 % of the specifie
18、d width is less than 3 mm: 3 mm; c) if 0,5 % of the specified width is greater than 6 mm: 6 mm. SANS 733:2008 Edition 2.1 5 3.2.2 Sheets 3.2.2.1 Length and width The purchaser shall specify the length and width (which shall be at least 50 mm) of sheets of boxboard and whether they shall be guillotin
19、e-trimmed, subject to the appropriate of the following tolerances: a) Guillotine-trimmed sheets: 2 mm (on both length and width). b) Other sheets: The tolerances given for the width of reels in 3.2.1 shall apply to both the length and the width of the sheets. 3.2.2.2 Squareness Any out-of-squareness
20、, determined in accordance with 7.3.2(b), shall not exceed 0,5 %. 3.3 Calliper and basis mass 3.3.1 General The calliper shall be within the relevant limits given in section 4 and, subject to the appropriate tolerances given in 3.3.2, either a) the calliper shall be as specified by the purchaser and
21、 the basis mass as agreed upon between supplier and purchaser; or b) the basis mass shall be as specified by the purchaser and the calliper as agreed upon between supplier and purchaser. 3.3.2 Tolerances a) When the calliper is specified by the purchaser, 1) the average calliper, determined in accor
22、dance with 7.4, shall not differ from the specified value by more than 5 % or 0,03 mm, whichever is greater; and 2) the average basis mass, determined in accordance with 7.5, shall be within 7,5 % of the agreed value. b) When the basis mass is specified by the purchaser, 1) the average basis mass, d
23、etermined in accordance with 7.5, shall be within 5 % of the specified value; and 2) the average calliper, determined in accordance with 7.4, shall not differ from the agreed value by more than 7,5 % or 0,03 mm, whichever is greater. 4 Specific requirements 4.1 White-lined board White-lined board sh
24、all be one of the following, as specified by the purchaser: a) double white-lined, SANS 733:2008 Edition 2.1 6 b) white-lined and manilla-backed, c) white-lined and grey-backed, d) white-lined and backed as specified by the purchaser, and shall comply with the requirements given in table 1. Table 1
25、White-lined board 1 2 3 Property Requirement Test method subsection Folding quality (in each direction of the board), min. 7 7.7 Surface strength, wax No., min. 7.8 Top liner 10A Back 5A Average brightness, %, min. 69 7.9 Average gloss, %, min. 18 7.10 Average water absorptiveness, g/m2 per 30 s, ma
26、x. 7.11 Top liner 70 Back 100 Calliper range, mm 0,33 - 0,97 inclusive 7.4 Average tensile breaking length, m, min. 7.6 a) Calliper 0,33 - 0,76 mm MD 4 000 CD b) Calliper over 0,76 - 0,97 mm 1 200 MD 3 500 CD 1 200 4.2 White machine-coated board White machine-coated board shall have one of the linin
27、g-and-backing combinations given in 4.1 (as specified by the purchaser) and shall in addition be clay-coated on the top liner. It shall comply with the requirements given in table 2. SANS 733:2008 Edition 2.1 7 Table 2 White machine-coated board 1 2 3 Property Requirement Test method subsection Fold
28、ing quality (in each direction of the board), min. 6 7.7 Average brightness, %, min. 73 7.9 Average gloss, %, min. 25 7.10 Average water absorptiveness, g/m2 per 30 s, max. 7.11 Top liner 50 Back 100 Calliper range, mm 0,33 - 0,97 inclusive 7.4 Average tensile breaking length, m, min. 7.6 a) Callipe
29、r 0,33 - 0,76 mm MD 4 000 CD 1 200 b) Calliper over 0,76 - 0,97 mm MD 3 500 CD 1 200 4.3 Manilla-lined board Manilla-lined board shall be one of the following, as specified by the purchaser: a) double manilla-lined, b) manilla-lined and grey-backed, c) manilla-Iined and backed as specified by the pu
30、rchaser, and shall comply with the requirements given in table 3 appropriate to the type of manilla-lined board specified by the purchaser. SANS 733:2008 Edition 2.1 8 Table 3 Manilla-lined board 1 2 3 Requirement Property Folding board Semi-folding boardTest method subsection Folding quality (in ea
31、ch direction of the board), min. 7 6 7.7 Surface strength, wax No., min. 10A 5A 7.8 Average water absorptiveness, g/m per 30 s, max. Top liner 70 70 Back 100 100 7.11 Calliper range, mm 0,33 - 0,97 inclusive 7.4 Average tensile breaking length, m, min. 7.6 a) Calliper 0,33 - 0,76 mm MD 4 000 CD 1 20
32、0 b) Calliper over 0,76 - 0,97 mm MD 3 500 CD 1 200 4.4 Kraft-lined board Kraft-lined board shall be one of the following, as specified by the purchaser: a) double kraft-lined, b) kraft-lined and manilla-backed, c) kraft-lined and backed as specified by the purchaser, and shall comply with the requi
33、rements given in table 4. SANS 733:2008 Edition 2.1 9 Table 4 Kraft-lined board 1 2 3 Property Requirement Test method subsection Folding quality (in each direction of the board), min. 7 7.7 Average water absorptiveness, g/m2 per 30 s, max. 7.11 Top liner 70 Back 100 Calliper range, mm 0,33 - 0,97 i
34、nclusive 7.4 Average tensile breaking length, m, min. 7.6 a) Calliper 0,33 - 0, 76 mm MD 4 000 CD 1 200 b) Calliper over 0,76 - 0,97 mm MD 3 500 CD 1 200 4.5 Chipboard Chipboard shall be lined or unlined as specified by the purchaser, and shall comply with the requirements given in table 5. Table 5
35、Chipboard 1 2 3 Property Requirement Test method subsection Folding quality (in each direction of the board), min. 6 7.7 Calliper range, mm 0,33 - 1,02 inclusive 7.4 Average tensile breaking length, m, min. 7.6 a) Calliper 0,33 - 0,76 mm MD 3 800 CD 1 150 b) Calliper over 0,76 - 1,02 mm MD 3 400 CD
36、1 150 4.6 Rigid-board Rigid-board shall be one of the following, as specified by the purchaser: a) unlined, b) single blue-lined, c) double blue-lined, SANS 733:2008 Edition 2.1 10 d) single grey-lined, e) double grey-lined, f) lined as specified by the purchaser, and its average stiffness (in each
37、direction) shall conform to the appropriate minima given in table 6. Table 6 Rigid-board 1 2 3 Nominal calliper mm Average stiffness, mNm min. 0,51 up to and including 0,61 18 5 0,62 up to and including 0,74 30 10 0,75 up to and including 0,86 45 15 0,87 up to and including 0,99 60 20 1,00 up to and
38、 including 1,12 83 27 1,13 up to and including 1,24 113 37 1,25 and over 149 58 5 Packing and marking 5.1 Packing 5.1.1 Sheets Unless otherwise specified by the purchaser, sheets shall be packed in accordance with commercial practice on acceptable pallets or in acceptable bundles. Only sheets of the
39、 same type of boxboard, size, and identification reference shall be packed together on a pallet or in a bundle. 5.1.2 Reels Reels shall be wrapped or unwrapped, according to commercial practice. 5.2 Marking 5.2.1 Sheets The following information shall appear legibly and indelibly on a label pasted o
40、n or tied to each bundle or inserted (in a readily-visible position) between sheets on pallets1): a) manufacturers name, or trade name, or trademark; b) a description of the board; c) nominal calliper; d) size of sheets; 1)Purchasers are advised to ensure that sheets of board from each pallet are st
41、acked apart from sheets of other pallets and that each stack bears the identification markings carried by the label attached to the pallet from which the sheets were taken. SANS 733:2008 Edition 2.1 11 e) nominal number of sheets per bundle; f) net mass of board on pallet or in bundle; g) manufactur
42、ers identification reference. 5.2.2 Reels The following information shall appear in clear and indelible marking on one end of each reel: a) manufacturers name, or trade name, or trademark; b) a description of the board; c) nominal calliper; d) width of board; e) mass of reel; f) manufacturers identi
43、fication reference. 6 Sampling and compliance with the specification2)6.1 Sampling The following sampling procedure shall be applied in determining whether a lot complies with the relevant requirements of the specification. The samples so drawn shall be deemed to represent the lot. 6.1.1 First sampl
44、e a) Boxboard of width greater than 600 mm From the lot draw at random 5 units or all the units, whichever is less, and after inspecting (see 7.2) each unit so drawn, take from it a test unit as follows: 1) Reels. After removing any damaged layers of board from the outside of the reel and measuring
45、the width of the boxboard (see 7.3.1), discard at least three undamaged layers, and cut a test unit from across the full width of the reel. 2) Pallets and bundles. Take a test unit, comprising at least two consecutive sheets, from the pallet or bundle. If possible, do not take the unit from the shee
46、ts in the first 15 mm of thickness of undamaged layers at the top or bottom of the pallet or bundle. b) Boxboard of width not exceeding 600 mm From the lot draw at random 7 units. Discard all damaged layers from each unit so drawn and then take from it a test unit. 2)This section applies to the samp
47、ling for inspection and testing before acceptance or rejection of single lots (consignments) in cases where no information about the implementation of quality control or testing during manufacture is available to help in assessing the quality of the lot. It is also used as the procedure for adjudica
48、ting in cases of dispute. SANS 733:2008 Edition 2.1 12 6.1.2 Second sample a) Boxboard of width greater than 600 mm If the lot consists of more than 15 units and if after inspection and testing of the first sample (see 6.1.1) only one defective is found, draw a further sample of 10 units and from ea
49、ch unit so drawn take a test unit in the manner described in 6.1.1(a). b) Boxboard of width not exceeding 600 mm If the lot consists of more than 50 units and if after inspection and testing of the first sample (see 6.1.1) two defectives are found, draw a further sample of 14 test units in the manner described in 6.1.1(b). 6.2 Compliance with the specification The lot shall be deemed to comply with the relevant requirements of the specification if a) in the case of boxboard of width greater than 600 mm 1) in the sample from a lot containing 15 or fewer units, no
