NZQA registered unit standard
288 version 5
Page 1 of 3
Title
Operate a blown film extrusion machine
Level
2
Credits
8
Purpose
People credited with this unit standard are able to: demonstrate
knowledge of a blown film extrusion line; and purge, shut down,
perform a material or colour changeover, and restart a blown
film extrusion line.
Classification
Plastics Processing Technology > Blown Film Extrusion
Available grade
Achieved
Entry information
Recommended skills
and knowledge
Unit 287, Perform process operations for blown film extrusion;
and Unit 23129, Process and use plastics materials.
Explanatory notes
1
Definitions
Enterprise – an organisation where training and/or assessment is taking place,
and/or where the trainee is employed.
Enterprise procedures – 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.
2
Films applicable to this unit standard are those produced from general purpose
polymers such as low density polyethylene or linear low density polyethylene or high
density polyethylene.
3
For assessment, the performance of all the evidence requirements must take place in
accordance with enterprise procedures.
Competenz
SSB Code 101571
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
288 version 5
Page 2 of 3
Outcomes and evidence requirements
Outcome 1
Demonstrate knowledge of a blown film extrusion line.
Evidence requirements
1.1
Film extruder components are identified and their purpose is described.
Range
1.2
Downstream equipment is identified and its purpose is described.
Range
1.3
components include – controls, safety features, drive, screw and
barrel, screen changer, die, air ring, bubble cooling, raw material
handling equipment, main drive, gear box.
downstream equipment includes – bubble guide, collapsing frame,
top nips, web guiding, treaters, slitters, winders.
Machine services are identified and their purpose and controls are described.
Range
machine services – electrical, water, compressed air.
Outcome 2
Purge, shut down, perform a material or colour changeover, and restart a blown film
extrusion line.
Evidence requirements
2.1
The blown film extrusion line is purged of old material.
2.2
The blown film extrusion line is shut down.
2.3
The hopper is cleaned of all previous materials.
Range
procedures may include – hopper cleaning, cleaning and fitting a
hopper magnet.
2.4
Raw material and additives are selected and verified against job specification,
and new raw materials are loaded.
2.5
The blown film extrusion line is purged with new material.
2.6
Work area is cleared and cleaned to ensure safe operating conditions.
Range
2.7
work area may include – floors, stairs, platforms, machine
surfaces, ledges, intake and output areas, hand tools.
Preset blown film extrusion line is restarted and run with the new materials and
monitored to meet job specification.
Competenz
SSB Code 101571
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
Planned review date
288 version 5
Page 3 of 3
31 December 2016
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
27 October 2005
31 December 2014
Review
5
17 May 2012
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 (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.
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
 New Zealand Qualifications Authority 2016