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Model No. : | Australian/New Zealand Standard |
---|---|
Brand Name : | CHIYE GLASS BEAD |
Material : | Glassbead |
Langfang, Hebei, China
Product description
The glass bead can be separated as intermix glass beads and drop-on glass beads according to the usage of them, and also can be devided as moisture-proof beads, adhesive coating beads and dual-coated beads.
5.5 Shape
5.5.1 General
Beads shall be tested for roundness in accordance with Clause 5.5.2 or Clause 5.5.3, as
appropriate.
5.5.2 Type A beads
When Type A beads are optically examined for roundness in accordance with Appendix E
after being conditioned in an open container for 24 h, the rounds shall be at least 80% by
count.
5.5.3 Type B, C and D beads
When Type B, C or D beads are tested for roundness in accordance with Appendix D, after
being conditioned in an open container (see Note 1) for at least 24 h, the `rounds` shall be
at least 70% by mass.
NOTES:
1 Containers should be used which avoid the build-up of electrostatic charges and allow free
flow.
2 Test a minimum of 5 g of Type B or C, or a minimum of 15 g of Type D beads, where
applicable.
5.6 Colour
When a sample of beads is tested in accordance with Appendix F, the colour shall be lighter
than the reference Standard.
NOTE: This procedure is aimed at detecting coloured glass, which if present, may interfere with
the retroreflective properties of the beads.
Langfang, Hebei, China
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