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BS 89250:2019

BS 89250:2019

$167.15

Plastics – Joining of thermoplastic moulded components – Specification for quality levels for imperfections

Published By Publication Date Number of Pages
BSI 2019 34
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This British Standard specifies quality levels for imperfections in joints in thermoplastic moulded components due to the joining process.

This British Standard does not describe imperfections that can be generated either during service or present before joining, such as poor fit up. The correct preparation before joining is described in the relevant thermal joining process specification (TJPS), as defined in BS 89100. It is not applicable to onsite joining processes.

Three quality levels are specified in order to permit application for a wide range of joining processes set out in a) to j) below. They are designated by symbols B, C and D, where B is the most stringent. The quality levels refer to production quality and not to the fitness for purpose (see 3.4) of the manufactured product.

  1. ultrasonic welding;

  2. ultrasonic spot welding;

  3. infrared welding;

  4. hot gas convection welding;

  5. linear vibration welding;

  6. orbital vibration welding;

  7. spin welding;

  8. laser welding;

  9. hot plate welding; and

  10. heat staking: hot air; electrical, infrared and ultrasonic.

PDF Catalog

PDF Pages PDF Title
4 Foreword
5 0 Introduction
1 Scope
6 2 Normative references
3 Terms and definitions
7 4 Quality levels and requirements
Table 1 — Quality levels for weld imperfections
9 Table 2 — Quality levels for ultrasonic welding
12 Table 3 — Quality levels for ultrasonic spot welding
15 Table 4 — Quality levels for infrared welding
18 Table 5 — Quality levels for hot gas convection welding
21 Table 6 — Quality levels for linear vibration welding
23 Table 7 — Quality levels for orbital vibration welding
25 Table 8 — Quality levels for spin welding
27 Table 9 — Quality levels for laser welding
29 Table 10 — Quality levels for hot plate welding
32 Table 11 — Quality levels for heat staking: hot air, electrical, infrared and ultrasonic

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BS 89250:2019
$167.15