Nzqa registered unit standard 297 version 5




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NZQA registered unit standard

297 version 5




Page of




Title

Run and monitor the extrusion blow moulding production process

Level

2

Credits

10




Purpose

People credited with this unit standard are able to: demonstrate knowledge of the operation of an extrusion blow moulding machine; apply and monitor extrusion blow moulding machine settings; perform a material or colour changeover on the extrusion blow moulding machine; and identify and correct routine product moulding faults.




Classification

Plastics Processing Technology > Extrusion Blow Moulding




Available grade

Achieved




Entry information

Recommended skills and knowledge

Unit 296, Operate the extrusion blow moulding machine; Unit 300, Service an advanced or complex mould for extrusion blow moulding; Unit 23130, Classify and name plastics materials; or demonstrate equivalent knowledge and skills.


Explanatory notes
1 All work practices must meet enterprise health and safety requirements.
2 Definitions

Enterprise means an organisation where training and/or assessment is taking place, and/or where the trainee is employed.

Enterprise procedures are defined as actions which comply with the policies, systems, and directives in a particular enterprise. Enterprise procedures must comply with the requirements of the Health and Safety in Employment Act 1992, and subsequent amendments.
Outcomes and evidence requirements
Outcome 1
Demonstrate knowledge of the operation of an extrusion blow moulding machine.
Evidence requirements
1.1 The blow moulding machine components are identified and their purpose described in accordance with enterprise procedures.
Range components may include – extruder drive motor, drive coupling, gear box, thrust bearing, screw, barrel, die head, pin and die, parison programmer, platens, mould close equaliser, tie bars, strong back, platen support, blow pin assembly, parison cutting/sealing unit;

evidence is required for at least 10 components.


1.2 Process operations are described in accordance with enterprise procedures.
Range operation cycle – extrusion, clamping, cutting, blowing, cooling, deflating, opening, ejection, deflashing, trepanning, post cooling, leak testing.
Outcome 2
Apply and monitor extrusion blow moulding machine settings.
Range evidence is required for one machine set-up.
Evidence requirements
2.1 Machine set-up information is interpreted, and the extrusion blow moulding machine is set up in accordance with enterprise procedures.
2.2 Extrusion blow moulding machine settings are monitored to maintain product quality and output, and are reported in accordance with the job specification and enterprise procedures.
Outcome 3
Perform a material or colour changeover on the extrusion blow moulding machine.
Evidence requirements
3.1 Machine is cleaned of all previous materials, and is loaded with the selected purging material in accordance with enterprise procedures.
3.2 Purging is performed in accordance with enterprise procedures.
3.3 Raw material and additives are selected to comply with job specification and loaded into the extrusion blow moulding machine.
3.4 Machine is run with new material and monitored to meet job specifications.
Outcome 4
Identify and correct routine product moulding faults.
Evidence requirements
4.1 Routine product moulding faults are identified and corrected in accordance with enterprise procedures.
Range at least three routine product moulding faults – sizing, holes, deformations, colour, surface finish, product weight, wall thickness distribution (perimeter and length), mandrel lines and die lines, under inflation, air trapping.
4.2 Blow moulding process faults are reported according to enterprise procedures.
4.3 Extrusion diehead pin and die type is identified, and die and pin are removed, cleaned, and refitted in accordance with enterprise procedures.
Range types may include – converging, diverging, parallel, ovalised;

evidence to be demonstrated for one diehead pin and die type, and knowledge of three others.





Planned review date

31 December 2017


Status information and last date for assessment for superseded versions

Process

Version

Date

Last Date for Assessment

Registration

1

28 April 1993

31 December 2014

Revision

2

13 February 1997

31 December 2014

Review

3

23 January 1998

31 December 2014

Review

4

24 August 2006

31 December 2014

Review

5

21 March 2013

N/A




Consent and Moderation Requirements (CMR) reference

0134

This CMR can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.
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 (CMRs). 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.
Comments on this unit standard
Please contact Competenz info@Competenz.org.nz if you wish to suggest changes to the content of this unit standard.


Competenz

SSB Code 101571



Ó New Zealand Qualifications Authority 2016





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