BS EN ISO 8033:2017 pdf download – Rubber and plastics hoses — Determination of adhesion between components (ISO 8033:2016) Make two parallel cuts on the strip 25 mm ± 0,5 mm apart, taking care not to cut through the yarns. Separate a layer for a distance sufficient to enable the separated ends to be held in the grips of the test machine (see Figure 3). 6.3.5 Type 4 Cut a suitable length of hose in half longitudinally. From one of the halves, cut a strip 10 mm ± 0,5 mm wide, or of the maximum width obtainable if the width is less than 10 mm. Separate a layer for a distance sufficient to enable the separated ends to be held in the grips of the test machine (see Figure 4). 6.3.6 Type 5 Cut a suitable length of hose in half longitudinally. Using a twin-bladed tool, cut from one of the halves a centrally located longitudinal strip 5 mm ± 0,2 mm wide through the lining and open up one end of the test piece to form a lip. Separate a layer for a distance sufficient to enable the separated ends to be held in the grips of the test machine (see Figure 5). 6.3.7 Type 6 Cut a ring 35 mm ± 2 mm wide from the hose at right angles to its longitudinal axis. Make two circumferential cuts through the cover 25 mm ± 0,5 mm apart and located centrally on the test piece. Make a transverse cut across the 25 mm width through the cover and open up on one side of the cut to form a lip (see Figure 6). NOTE When cutting ring-shaped test pieces from a hose, it is advisable to insert a wooden cylinder, or similar device, into the hose before cutting out the test piece. 6.3.8 Type 7 Obtain a strip from the hose wall by cutting along the reinforcing helix through the complete thickness of the hose wall and trim to 160 mm long and 25 mm ± 0,5 mm wide or the maximum width obtainable if the width is less than 25 mm. Separate a layer for a distance sufficient to enable the separated ends to be held in the grips of the test machine (see Figure 7). This is an optional test for helix-reinforced hoses made in long lengths. It does not apply to hoses made to individual lengths,...

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