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Title / Perform basic process operations for injection stretch-blow moulding
Level / 1 / Credits / 5
Purpose / People credited with this unit standard are able to: identify and take precautions against operation hazards; perform basic process operations; and demonstrate knowledge of scrap material granulating. This unit standard is to enable entry level people to perform basic process operations in an injection stretch-blow moulding operation.
Classification / Plastics Processing Technology > Injection Stretch-Blow Moulding
Available grade / Achieved
Explanatory notes
1This unit standard applies to either single stage or two stage injection stretch-blow moulding processes.
2All work practices must meet enterprise health and safety requirements.
3Definitions
Enterprise means an organisation where training and/or assessment is taking place, and/or where the trainee is employed.
Enterprise procedure is defined as actions which comply with the policies, systems, and directives in a particular enterprise. Enterprise procedure must comply with the requirements of the Health and Safety in Employment Act 1992, and subsequent amendments.
Outcomes and evidence requirements
Outcome 1
Identify and take precautions against operation hazards.
Evidence requirements
1.1The danger and consequences of heating plastics materials in injection stretch-blow moulding equipment are identified, and precautions are taken in accordance with enterprise procedure.
Rangedanger – burns, fumes;
consequences may include – molten material, purging, pressure build-up, thermal degradation.
1.2Machine, ancillary equipment, product, and plastics material hazards are identified, and precautions are taken in accordance with enterprise procedure.
Rangemachine hazards include – pinch areas, guard removal, guard interlock bypassing, high pressure air, low pressure air, electricity, electric shock, hydraulic hazards, hot oil for mould conditioning, exhaust air.
Outcome 2
Perform basic process operations.
Evidence requirements
2.1The principle parts of the injection stretch-blow moulding injection, handling, and blow cycles are identified.
Rangeinjection cycle – injection, injection profile, injection pressure, hold pressure, screwback, cooling, opening, ejection, closing;
handling cycle may include – preform transport, temperature profiling;
blow cycle – stretch, blow, cooling, exhaust air, opening, product removal, closing.
2.2Enterprise terminology is used to describe product, production, and equipment.
2.3Basic post-moulding operations are performed in accordance with enterprise procedure.
Rangebasic post-moulding operations may include – product removal, product inspection, product packaging, scrap processing.
2.4Raw material is loaded and dried in accordance with enterprise procedure, with no damage to the plant, personnel, or material.
Rangeloading hoppers, drying material.
2.5Emergency stopping of the injection stretch-blow moulding equipment and ancillary equipment is demonstrated in accordance with enterprise procedure.
Rangeevidence may be simulated if required.
2.6Production recording is carried out in accordance with enterprise procedure.
Outcome 3
Demonstrate knowledge of scrap material granulating.
Evidence requirements
3.1Scrap material is identified and differentiated from waste in accordance with enterprise procedures.
Rangerubbish, re-usable plastics.
3.2The purpose, principle of operation, and safety systems of material scrap granulating equipment are described.
3.3Personal safety equipment requirements for use when operating scrap granulating equipment are described.
Rangesafety equipment includes – ear protection, eye protection.
3.4Hazards associated with the use of scrap granulating equipment are described.
Rangehazards – personal injury, material contamination, granulator damage.
This unit standard is expiring. Assessment against the standard must take place by the last date for assessment set out below.
Status information and last date for assessment for superseded versions
Process / Version / Date / Last Date for AssessmentRegistration / 1 / 30 September 1998 / 31 December 2019
Revision / 2 / 15 November 2002 / 31 December 2019
Revision / 3 / 17 March 2004 / 31 December 2019
Rollover and Revision / 4 / 25 September 2006 / 31 December 2019
Review / 5 / 18 September 2009 / 31 December 2019
Review / 6 / 15 September 2016 / 31 December 2019
Consent and Moderation Requirements (CMR) reference / 0134
This CMR can be accessed at
Please note
Providers must be granted consent to assess against standards (accredited) by NZQA, before they can report credits from assessment against unit standards or deliver courses of study leading to that assessment.
Industry Training Organisations must be granted consent to assess against standards by NZQA before they can register credits from assessment against unit standards.
Providers and Industry Training Organisations, which have been granted consent and which are assessing against unit standards must engage with the moderation system that applies to those standards.
Requirements for consent to assess and an outline of the moderation system that applies to this standard are outlined in the Consent and Moderation Requirements (CMR). The CMR also includes useful information about special requirements for organisations wishing to develop education and training programmes, such as minimum qualifications for tutors and assessors, and special resource requirements.
CompetenzSSB Code 101571 / New Zealand Qualifications Authority 2018 / / New Zealand Qualifications Aut