SOUTH AFRICAN POST OFFICE LIMITED
SPECIFICATION NO.:
TITLE:
SAPO - T - 0016
TWINE (JUTE)
CATALOGUE NO.:
1.
100367
SCOPE
This specification covers the requirements for Twine used for securing of mail bags.
2.
NORMATIVE REFERENCES
2.1
SABS 04 Terms and definitions for textiles and textile merchandise.
SABS Methods 70, 72, 77, 114, 260, 270.
2.2
DEFINITIONS
Acceptable
:
Acceptable to the Senior Manager, Purchasing and
Materials Management of the S.A. Post Office Ltd.
Ball
:
A coiled spool of twine.
Packet
:
A number of balls wrapped together in an acceptable
wrapper.
Note:
Should any discrepancy arise between the content of this specification, the
sample provided or the purchase order; then please inform the Manager,
Quality Department, Silverton.
3.
REQUIREMENTS
3.1
GENERAL
The twine shall have been made in accordance with sound manufacturing
practice from uniform and well-prepared undyed yarns and shall be free from
knots, thickening and projecting fibre ends and shall have a smooth, clean
surface. It shall be delivered in spools and in a clean and commercially dry
condition and shall be free from defects that might impair its appearance or
serviceability, or both.
3.2
MASS PER SPOOL
The mass of twine in a ball shall be 250 g and shall not differ from the specified
mass by more than 10 g.
3.3
JOINS
One join shall be permitted in any one spool of 250 g.
NOTE: PAGE 1 OF THIS DOCUMENT IS FOR OFFICE USE ONLY.
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3.4
FINISH
The twine shall have been treated and finished so as to prevent the ends of
any cut end from fraying and becoming undone during normal handling and
shall be such as to be acceptable.
3.5
TWINE PROPERTIES
The twine shall comply with the requirements given in Table 1.
TABLE 1 - TWINE REQUIREMENTS
1
2
3
PROPERTY
REQUIREMENT
S
TEST METHOD
SUBSECTION
Bast (Jute)
100
5.3
Linear density, tex
2000
5.4
Ply of yarn
4 Ply
5.5
Twist, turns per metre, min
99
5.6
Direction of twist
‘S’
5.7
Breaking strength, N, min
307
5.8
Loop strength, N, min.
293
5.9
15
5.10
Fibre composition, %
Non-fibrous material content
% (m/m)
4.
Max
PACKING AND MARKING
4.1
PACKING
Spools of twine shall be supplied in packets containing 6 spools of twine.
Packets of twine shall be packed and supplied on fourway entry pallets of
nominal size, 1000 mm x 1200 mm and unless otherwise specified in the order
or contract each pallet shall contain the same number of packets of the same
nominal mass, stacked to a height of not more than 1000 mm from the top
surface of the pallet with a tolerance of ±100 mm.
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NOTE: For information only. It is recommended to pack a quantity of 144 spools per lay;
15 lays high and shrink-wrapped to the pallet.
4.2
MARKING
4.2.1 Packets
Each packet shall contain a printed label on the outside bearing the
following information in letters of at least 10 mm (36 pt BOLD):
4.2.1.1
4.2.1.2
4.2.1.3
4.2.1.4
4.2.1.5
4.2.1.6
The manufacturer’s name or trade mark or both;
The year of manufacture;
The order or contract number;
The S.A. Post Office catalogue number;
The nominal mass of spools; and
The quantity of spools.
4.2.2 Bulk containers
Bulk containers, (see 4.1) shall each contain a printed label on the
outside, with the same information as required in 4.2.1 and which will
include in addition the number of spools in each bulk container.
4.2.3 Additional marking
When so required in the order or contract, bulk containers will bear
additional information to that specified in 4.2.2.
5.
INSPECTION AND METHODS OF TEST
IMPORTANT NOTE:
Should an offerer at present not be a SABS Quality listed firm in terms of SABS ISO
9002, a report by the South African Bureau of Standards, to the effect that the goods
offered are in accordance with this specification, should be handed in with the offer.
Such a report must not be older than six (6) months and shall be issued by the South
African Bureau of Standards after evaluating the goods and/or the manufacturing
premises. All costs for the inspection/test of the offered goods will be for the offerers
account.
5.1
INSPECTION
After inspecting the parcels and bulk containers for compliance with the
relevant requirements of Section 4, visually examine each package in the
sample for compliance with the requirements given in 3.1, 3.3 and 3.4.
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5.2
CONDITIONING
Condition the test samples in accordance with SABS Method 70, determine
the mass of twine in a package (see 3.2) and then cut from it the test
specimens required for the tests given in 5.3 - 5.10 (inclusive).
5.3
FIBRE COMPOSITION
Determine by microscopical examination and chemical analysis.
5.4
LINEAR DENSITY
Use SABS Method 72.
5.5
PLY OF YARN
Determine by visual examination.
5.6
TWIST
Use SABS Method 270.
5.7
DIRECTION OF TWIST
Determine by visual examination.
5.8
BREAKING STRENGTH
Use SABS Method 77.
5.9
LOOP STRENGTH
Use SABS Method 260 and specimens of length such that the initial distance
between the jaws of the testing machine is approximately 50 cm .
5.10
NON-FIBROUS MATERIAL CONTENT
Use SABS Method 114.
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ANNEX A
S.A. POST OFFICE
Manufacturer:
Order/Contract Nº:
S.A.P.O. Catalogue Nº:
Nominal Mass of spools:
Quantity of spools:
Year of manufacture:
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