3614

NEW ZEALAND GAZETTE

No. 175

SCHEDULE ONE

THE NEW ZEALAND WOOL INDUSTRY SPECIFICATIONS FOR WOVEN HIGH DENSITY POLYETHYLENE CAPLESS WOOL PACKS

DECEMBER 1993

1. INTRODUCTION

1.1 TITLE:

These Standards and Procedures shall be called the New Zealand Wool Industry Specification for Woven High Density Polyethylene Capless Wool Packs.

1.2 APPLICATION:

This Specification replaces all previous Specifications for Woven High Density Polyethylene Capless Wool Packs. All New Zealand HDPE wool packs supplied to New Zealand after 12 December 1993 will be required to meet this Specification.

2. STANDARDS

2.1 FABRIC:

2.1.1 Construction

The pack fabric shall be woven from tapes suitably prepared from high density polyethylene film and in such a way that any wool in the pack would not be exposed.

2.1.2 The pack fabric shall not contain any loose ends of tape or yarn, and the pack itself shall be free of any cut ends of tape, thread, flakes of anti-slip coating material, or any other foreign matter.

2.1.3 Colour

The pack fabric shall be brown in colour.

2.2 DIMENSIONS:

2.2.1 Length

The finished pack shall have an overall length (including flaps) of 1440mm ± 15mm measured from the base seam.

2.2.2 Base

The internal dimensions of the base shall measure 685mm × 685mm ± 15mm in each direction.

2.2.3 Flaps

Side seams shall extend 950mm ± 15mm from the base seam.

2.3 MASS:

The finished pack shall have a mass of between:

1.60 kilograms maximum

1.40 kilograms minimum

2.4 SEWING THREAD:

The pack seams shall be sewn with undyed multifilament nylon sewing thread.

2.5 PACK CONSTRUCTION:

2.5.1 Heat Sealing

All cut ends of the sewing thread and the cut edges of the pack seams and flaps shall be permanently heat sealed.

2.5.2 Hemming

The cut edges of the pack seams and of the flaps shall be folded twice and suitably hemmed to avoid fraying.

2.6 STRENGTH:

2.6.1 Tensile Strength and Extension

When tested in accordance with the method described in NZWB Test Method No 410 (October 1991) the fabric shall have a tensile strength of not less than:

180 kgf - warpways

160 kgf - weftways

and an extension, as defined in NZWB Test Method No 410, of between

3.5% and 6.5% - warpways

3.5% and 6.5% - weftways

2.6.2 Handling Resistance

When tested in accordance with the method described in NZWB Test Method No 411 (June 1990) the fabric shall have a strength of not less than:

70 kgf - warpways

70 kgf - weftways

2.6.3 Seam Strength

When tested in accordance with the test method described in AWC Test Method No 31 (27 July 1990) the pack seams shall have a seam strength of not less than:

90 kgf - warpways

90 kgf - weftways

2.6.4 Testing

Wool pack polyethylene fabric has lower surface friction characteristics and greater strength than normal apparel textiles and special care shall be taken to avoid slipping of the test samples in the jaws during testing.

2.7 NON FIBRILLATION:

2.7.1 Degree of Non Fibrillation

When tested in accordance with the test method described in AWC Test Method No 34 (27 July 1990) and assessed against a set of graded photographic standards prepared by the AWC, none of the 7 pieces of material making the pack shall have a rating of less than 3 weftways or warpways and the average rating shall not be less than 3 weftways or warpways.

2.8 ANTI-SLIP COATING:

2.8.1 Surface Friction

The pack fabric shall be treated on both sides with an anti-slip coating so that when tested in accordance with the test method described in AWC Test Method No 39 (24 May 1985) the surface friction value on both sides of the pack shall be:

minimum 3.5 Newtons, - maximum 5.5 Newtons - warpways

minimum 3.5 Newtons, - maximum 5.5 Newtons - weftways

2.8.2 Heat Stability

The anti-slip coating applied to the pack fabric shall not melt and/or give adhesion between the wool and fabric when tested in accordance with the test method described in AWC Test Method No 36 (27 July 1990) after heating for 5 minutes at a temperature of 110° Celsius.

2.9 BALE IDENTIFICATION LABEL:

The specifications for the attachment of the bale identification label to New Zealand capless wool packs are attached as Appendix A.

2.10 PACK IDENTIFICATION:

2.10.1 Pack Stripes

The pack fabric shall contain one broad vertical blue stripe, 28 mm in width (± 2 mm) and positioned 100 mm (± 10 mm) from the right hand selvage.

2.10.2 Pack Manufacturer Label

A label shall be sewn to the side seam of each pack to show on the outside of the pack and to include the following information in legible markings:

a) the manufacturer’s name or trade mark

b) the batch identification number

c) the month and year of manufacture