BS 89100:2018 pdf download.Plastics — Joining of thermoplastic moulded components — Specification of variables for thermal joining processes
1 Scope
This British Standard specifies the minimum essential variables in order to produce a component of the required consistency and quality for the following thermal joining processes:
• ultrasonic welding/staking/spot welding;
• infrared welding;
• hot gas convection welding;
• linear vibration welding;
• orbital vibration welding;
• spin welding;
• laser welding;
• hot plate welding;
• heat staking: hot air;
• heat staking: electrical; and
• heat staking: infrared (IR).
This British Standard defines the thermal joining process specification (TJPS) for each of the thermal joining processes listed above, to ensure that all the essential variables are properly considered,including the qualified range of each variable, in order to establish and maintain component quality at an acceptable level.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
BS EN ISO 472, Plastics — Vocabulary
3 Terms and definitions
For the purposes of this British Standard, the terms and definitions given in BS EN ISO 472 and the following apply.
3.1 component
joined sub-components
3.2 dimensional report
full measurement report on product before welding including flatness at weld joint
3.3 essential variable
joining condition that influences the quality of the joint and requires qualification
3.4 joining organization
organization responsible for the serial production joining and maintenance of quality
3.5 joining procedure
specified course of action to be followed in making a joint, including the joining process(es), reference to materials, preparation, pre-heating (if necessary), control of process parameters and necessary equipment to be used
3.6 joining process
method of softening or melting to obtain a permanent joint
3.7 joining process qualification record (JPQR)
record comprising all data of mechanical test results for the specified range of each essential variable needed for qualification of a TJPS, used by the joining organization as part of the sign-off documentation
3.8 joint
junction of two sub-components
3.9 part moisture content
amount of moisture content in parent material at the time of welding
3.10 process report
document confirming that the sub-component has been manufactured using the correct moulding process parameters, conditions, material grade, masterbatch reference, masterbatch percentage, and regrind percentage
3.11 sub-component
part to be joined
3.12 thermal joining process specification (TJPS)
document that has been qualified and provides the required variables of the joining procedure to ensure repeatability during production
BS 89100:2018 pdf download
