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US 250:2000
EAS 174
First edition: November 2000
UGANDA NATIONAL BUREAU OF STANDARDS
Price group
Descriptors:
© 2000 Uganda National Bureau of Standards. All rights reserved
ICS 55.080
1IT IS IMPORTANT THAT USERS OF UGANDA STANDARDS ASCERTAIN THAT THEY ARE IN POSSESSION OF THE LATEST AMENDMENTS OR LATEST EDITIONS
In order to keep abreast of technological development Uganda Standards are subject to periodic review.
The following table will assist the user to update the standard
AMENDMENTS
| Clause | Amendment No. | Date of Issue | Text affected |
In order to keep abreast of technological development Uganda Standards are subject to periodic review.
NOTE:
A Uganda standard does not purport to include all necessary provisions of a contract. Users are responsible for its correct application.
Uganda National Bureau of Standards
P.O. Box 6329
Tel: 256-41- 222367/9
Fax: 256-41-286123
Website: www.unbs.org
E-mail: unbs@starcom.co.ug
SPECIFICATION FOR WOVEN BAGS MADE FROM NATURAL FIBRES FOR MILLED PRODUCTS
This Uganda Standard specifies the sacking and making-up requirements for woven bags made from natural fibres for packing and storage of milled products.
| ♦ | US -1: Method for determination of mass per unit length or area of woven or knitted fabrics. |
| ♦ | US 246, Specification for woven bags made from natural fibres for cereals and pulses. |
| ♦ | US -: Method for test for woven bags. |
| ♦ | US -:: Method for determination of added oil content of sisal and/or jute yarn or fabric. |
For the purpose of this draft Uganda Standard, the definitions given in US 246, apply.
The sacking shall be woven from natural fibre yarns and shall comply with the requirements in Table 1.
The sacking when visually examined shall be free from weaving defects such as holes, tears, floats, crushed selvages, spots and stains.
| CHARACTERISING | REQUIREMENTS | TEST METHOD |
|---|---|---|
| Mass per unit area g/m2 minimum | 650 | US - |
| Warp (ends) per 10 cm min | 34 | US - |
| Weft (shots) per 10 cm min | 56 (i.e. 28 × 2) | US - |
| Sacking breaking - Warp force, N min - Weft |
800 1,000 |
US - |
| Added Oil Content, max | 5% | Us 246 |
| Moisture regain, max. | 10% | US - |
The stitching thread shall be of natural fibres including cotton or man-made fibres.
The minimum number of stitches per 10 cm shall be 12. This shall be determined in accordance with clause 4.2.3.
Count the number of stitches over a length of 10 cm on each side seam and bottom seam (if any) of each bag. Space the measurements so that both sides are adequately assessed. Calculate the mean reading and report the mean for each bag.
1 US-, To be developed.
3Where selvages do not form the mouth hems, the raw edges of the sacking at the mount of the bag shall first be returned over to a depth of at least 1.5 cm then to a depth of at least 1.60 cm and the three layers of the sacking thus formed shall be firmly stitched.
The minimum breaking force of seam shall be 800 newtons. This shall be determined in accordance with US -
The minimum inside dimensions of the bag and the mass per bag shall be as specified in Table 2.
| Bag Capacity. Kg | Inside Width cm | Inside Length cm | Mass per bag gm |
|---|---|---|---|
| 50 | 50 | 76 | 580 |
| 90 | 68 | 112 | 1050 |
| Test Method | US - | US - | US - |
For purposes of identification, there be a minimum of two bands of coloured threads woven into the sacking of each bag. Each band shall have a minimum of two threads. The colours used shall be clearly visible.
The bags shall be packed in bales of the agreed quantity. The bales shall be wrapped or covered with suitable materials and securely bound or stitched to prevent damage/or contamination.
The following information shall be clearly marked on each bale: -