Draft Tanzania standard. Footwear-Sportswear Specification

Transcription

1 tbs TDC2(560)P 3 Draft Tanzania standard Footwear-Sportswear Specification TANZANIA BUREAU OF STANDARDS

2 Draft Tanzania Standard TDC2 (560) P 3 Footwear Sportswear - Specification 0. Foreword 0.1 This Draft Tanzania Standard lays down basic requirements for sportswear in order to assist the manufactures to produce the products that are of acceptable quality and value. 0.2 In deciding whether a particular requirement of this Draft Tanzania Standard is complied with, the final value, observed or calculated expressing the result of a test or analysis, shall be rounded off in accordance with TZS :2009 Rounding off numeric values. 0.3 In the preparation of this Draft Tanzania Standard assistance was derived from: IS 158: 2010-Sports Footwear-Specification, published by the Indian Standards Institution. 1

3 1. Scope This Draft Tanzania Standard prescribes the performance requirements of sports footwear for all sports in regardless of design and materials. 2. Normative references For the purpose of this Draft Tanzania Standard, the following references shall apply: a) TZS : 2009 Rounding off numerical values b) TZS 22: 2016-woven fabrics-determination of breaking load and extension c) TZS 1: 2016Textiles Tests for colour fastness-grey scale for assessing change in colour d) ASTM D Standard Test Method for Rubber Property Durometer Hardness e) TZS 21: 2016 Determination of mass per unit length and per unit area. f) TZS 26 Textiles - Determination of conductivity, ph, water-soluble matter, chlorine and sulphate in aqueous extracts g) TZS Textiles-Woven or knitted fabrics-determination of length and width h) TZS 250: Method for determination of absorbency of absorbent textile material. i) TZS 276: 2018-Footwear-Method of sampling j) TZS 277:1985 Footwear- Determination of strength of adhesion at toe and at the heel of stuck-on or molded on sole. k) TZS 12: 1989-Textiles Method of test for abrasion resistance of fabrics l) ISO :201Textiles -- Seam tensile properties of fabrics and made-up textile articles -- Part 1: Determination of maximum force to seam rupture using the strip method. m) TZS 198: 198, Leather Determination of chromium as chromic oxideextract n) TZS 201: 198, Leather Determination of shrinkage temperature o) TZS 205: 198, Leather Physical testing Measurement of thickness p) TZS 208: 198, Leather Determination of tear strength q) TZS 212: 198, Leather Determination of tensile strength and elongation r) TZS 211: 198, Leather Determination of colour fastness to-and-fro Rubbing (wet and dry) 2

4 3. Terminology For the purpose of this Draft Tanzania Standard, definitions given in TZS 275:1986-Footwear- Glossary of terms shall apply.. Requirements.1 Material.1.1The upper material used in the sports footwear shall conform to various requirements given in Tables 1 depending on the type of the material..1.2 Sports footwear shall be such that it would bend easily from foot to toe and shall retain its original shape immediately after release of force..1.3 Midsole The midsole material used in the sports footwear shall conform to various requirements prescribed in Table 2 depending on the type of material. Specific gravity and hardness shall be as agreed to between the purchaser and the supplier..1.3 Outsole The outsole material used in the sports footwear shall conform to various requirements prescribed in Table 3 depending on the type of material. Specific gravity and hardness shall be as agreed to between the supplier and buyer..1. Insole The insole material used in the sports footwear shall conform to the requirements specified in Table depending on the type of material..1.5sock liner The sock liner material used in the sports footwear shall conform to the requirements specified in Table depending on the type of material. 3

5 3.1.6 Laces The lace material used in the sports footwear shall conform to the requirements described in Table Metallic Trims and Components The metallic trims and components material used in the sports footwear shall be of an acceptable quality and intrinsically corrosion-resistant material. The trims shall be analyzed for corrosion resistance as per Annex A

6 S/N Table 1: Requirement for Upper Materials Characteristics 1 Flexing endurance, number of flexes before loss of adhesion of finish layer, min. After cycles After cycles After cycles 2 Adhesive strength, to Requirements Leather Synthetic materials Textiles Only fine cracks are permitted Neither the width nor the depth of these cracks shall have increased sharply and there shall be no sign of the finish flaking or separating No cracking of layer, no damage of film, no grain folds or powdering of top finish Only fine cracks are permitted Neither the width nor the depth of these cracks shall have increased sharply and there shall be no sign of the finish flaking or separating No cracking of grain layer, no damage of film, no grain folds or powdering of top finish fabrics Test Method TZS 206: 198 sole/midsole, kg/cm, Min TZS 277: Tensile strength, MPa, min. Split leather: 15 Full grain: TZS 22: 2018 TZS 212: 198 Elongation at break, percent, Min TZS 212: Lastometer test, mm, Min Crack: 7 Burst: TZS 207: Tear strength, kgf, Min 3 3 TZS 208: Colour fastness, min Light 3 or better TZS 211: 198 Washing 3 or better Rubbing o Dry o Wet TZS 138: Chrome content %, min TZS 198: Total ash %, max TZS 197: ph value, min TZS 26: 2018 TZS 199:

7 Table 2: Midsole Materials S/N Characteristics Requirements Test method 1 Thickness (mm), min. 0.8 TZS 205: Tensile strength, kg/cm, Min 15 TZS 212: Elongation at break, percent, min 200 TZS 212: 198 Tear strength, kg/cm, min 5 TZS 208: Adhesion to sole, kg/cm, min 3 TZS 277: 1985 S/N Table 3: Outsole material requirements Requirements Characteristics Rubber TPU/TPR PU PVC EVA Test method 1 Thickness (mm), min TZS 205: Compression set, %, max Annex B 3 Tensile strength, (MPa) TZS 212: 198 Elongation at break, (%), min TZS 22: 2018 TZS 212: Shrinkage (%), max TZS 137:2017 TZS 201: Abrasion loss, mm ,max TZS 12: Adhesion to sole, kg/cm, min 3 TZS 277: 1985 NOTE TPR-Thermoplastic rubbers PU-Polyurethane PVC-Polyvinylchloride EVA-Ethylene Vinyl Acetate 6

8 Table : Insole and Sock liner requirements S/N Characteristics Requirements Test method Insole sock liner 1 Tear strength, kg/cm, TZS 208: Thickness, mm, min TZS 205: Water absorption and loss, percent, min Water uptake 35 - TZS 250:1985 Water loss 0 - Shrinkage (%), max 2 2 TZS 201: ph value TZS 26: 2018 TZS 199: Water vapour permeability, ISO mg/cm 2 h, Colour fastness to rubbing Dry TZS 138: 2016 wet Table 5:Lace Material requirements S/N Characteristics Requirements Test method 1 Breaking strength, kg/cm, 35 TZS 22: Colour fastness, grey scale rating, min 3 or better TZS 1: Abrasion resistance, cycles, min 000 TZS 12:

9 Table 6: Toe-puffs and Stiffener requirements S/N Characteristics Requirements Test method Toe-puff stiffener Flexing, cycles at first TZS 206: crack, Resilience, %, min 0 0 SANS Water absorption, %, TZS 250: 1989 max. Area shape retention, %, min Initial SANS 6233 After 1 collapse Hardness (IRHD) ASTM D Note: IRHD=International Rubber Hardness Degree 8

10 5. Workmanship and finish The appearance, workmanship, finish and all other aspects not mentioned in this specification shall be of acceptable quality for trading practice. 6. Packing and Marking Each pair of sports footwear shall be packed in an individual box in order to protect them from damage during transportation, storage and handling 6.1 Marking Sports footwear The following information shall be marked on socks or tongue of sports footwear: a) The size of the sport footwear, b) The manufacture s name or trade mark, c) The design of the sports footwear, d) The types of upper materials i.e. leather or non-leather material, e) Any other information required by purchaser Boxes Each box shall bear the following information given in neat and legible marking at a position that is visible when boxes are stacked: a) The manufacturer s name or trademark; b) The size of the sports footwear; c) The design of the sports footwear; d) Any other information required by the purchaser. 9

11 7. Sampling and Conditioning 7.1 Sampling For all tests mentioned in this Draft Tanzania Standards, the sportswear shall be sampled for testing at least after 72 hours of manufacturing. Unless otherwise agreed, the test shall be conducted at least three times for each characteristic given in table 1 and Conditioning samples Unless otherwise agreed, the test specimens shall be conditioned for 2 hours at 27 C ± 2 C, and (65 ± 5%) relative humidity (RH) 8. Test report and rules of acceptance and rejection 8.1 Each consignment of sports footwear shall be accompanied by a certificate indicating its compliance with the requirements of this Draft Tanzania Standard. 8.2 The lot shall be considered conforming to the requirements of this Draft Tanzania Standard, if the samples representing it pass all the tests specified in this standard, otherwise, it shall be considered nonconforming. 10

12 ANNEX A CORROSION TEST A-1 Chemical 1% Sodium chloride solution. A-2 Test piece Three numbers of test pieces from the lot. A-3 Apparatus required A-3.1 Desiccator A-3.2 Air Circulating Oven A- PREPARATION OF SAMPLES A-.1 Soak a large piece of washed, bleached cotton fabric in the sodium chloride solution. A-.2 Allow the fabric to dry. A-.3 Cut the fabric up into small strips, approximately 6 cm 3 cm. A-. The metallic trims/components are wrapped in the fabric and bound with a thread to ensure contact. A-5 PROCEDURE A-5.1 Lay the dry test pieces in a dish. A-5.2 Place the dish in a desiccator with a little distilled water, and store for 3 days at 35 C. A-6 EVALUATION Visually examine the metallic trims/components for signs of corrosion and report. 11

13 ANNEX B COMPRESSION SET (STATIC) B-1 DESCRIPTION This method is used to measure the ability of a foam material to return to its original thickness after being Compressed/deflected between two parallel plates at a specified temperature and duration B-2 MATERIALS B-2.1 Midsole or Sockliner made of Foam Material B-3 EQUIPMENT B-3.1 Compression Apparatus B-3.2 Spacers, of thickness.0,.5, 5.0, 5.5 and 6.0 mm. B-3.3 Thickness Gauge, as described in TZS 205:198 B-3. Air-Circulating Oven, capable of maintaining 5.0 ± 1.0 C. B- SAMPLE PREPARATION Die cut four test samples having a diameter of 25. mm and a thickness of 10.0 ± 1.0 mm. The sample must be prepared with parallel top and bottom surfaces, and sides, which are perpendicular to the top and bottom surfaces. If a test sample is less than 8.0 mm, multiple layers of the test material must be stacked, without the use of adhesive, until a thickness of 10.0 ± 2.0 mm is obtained. B-5 REPETITIONS Test four samples per material. B-6 TEST PROCEDURE Measure the thickness of the samples. Place the appropriate spacers on the compression plate, such that 50 per cent compression will be obtained, as follows: Sample Thickness (mm)spacer Thickness (mm)

14 Place the test specimen onto the bottom plate and position the top plate onto the test specimen. Tighten the nuts on the test equipment until the top plate firmly contacts each of the spacers. With 15 min after compressing the samples, place the compression set equipment with test samples into their appropriate environment as described below: a) EVA, Latex, Polyethylene = 30 ± 2 C for 6 h b) Polyurethane = 23 ± 2 C for 22 h At completion of the exposure, immediately remove the test sample from the compression set equipment. Allow the materials to recover at 27 ± 2 C as described below: a) EVA, Latex, Polyethylene = 30 ± 2 min b) Polyurethane = 60 ± 2 min Immediately following the completion of the recovery period, measure the thickness of the samples, in the same manner described above. If the sample has set unevenly, record the minimum thickness. B-7 CALCULATION Compression set, in percentage = Original thickness Original thickness B-8 REPORT The average of the four test samples to the nearest 0.1 percent Final thickness Х