NZQA registered unit standard
287 version 5
Page 1 of 3
Title
Perform process operations for blown film extrusion
Level
1
Credits
4
Purpose
People credited with this unit standard are able to: identify and
take precautions against blown film extrusion operation
hazards; perform blown film extrusion process operations; and
identify and handle scrap and waste plastic materials used in
blown film extrusion.
Classification
Plastics Processing Technology > Blown Film Extrusion
Available grade
Achieved
Entry information
Recommended skills
and knowledge
Unit 23128, Demonstrate basic knowledge of plastics
production processes and 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.
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
287 version 5
Page 2 of 3
Outcomes and evidence requirements
Outcome 1
Identify and take precautions against blown film extrusion operation hazards.
Evidence requirements
1.1
The dangers of heating plastics materials in an extruder are identified and
precautions are taken.
Range
1.2
dangers – molten material, burns, fumes.
Hazards and harm from machine, hand tools, ancillary equipment, product,
plastics materials, and purging are identified, and precautions are taken.
Outcome 2
Perform blown film extrusion process operations.
Evidence requirements
2.1
The equipment on the blown film extrusion line is identified, and the purpose,
and the sequence of their operation are explained in terms of the blown film
extrusion process.
Range
equipment includes but is not limited to: extruder, die, air ring,
tower, bubble collapsing frame, top nip assembly, winder, screen
changer, resin handling equipment.
2.2
Simple roll changing is performed.
2.3
Extrusion operations are performed and records are maintained.
Range
2.4
extrusion operations may include – product removal, product
finishing, product packaging.
Quality inspections are carried out, recorded, and reported.
Range
visual and surface defects include – gels, die lines, scratches,
haze, opacity, fish eyes;
measurements – under or over gauge; surface treatment.
2.5
Raw materials are verified against job specifications and are loaded without
damage to plant or material, or injury to self or other personnel.
2.6
The emergency stop locations on the film extrusion line and ancillary equipment
are identified and emergency stopping of the film extrusion line and ancillary
equipment is described.
Outcome 3
Competenz
SSB Code 101571
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
287 version 5
Page 3 of 3
Identify and handle scrap and waste plastic materials used in blown film extrusion.
Evidence requirements
3.1
Scrap and waste plastic materials are identified.
3.2
Scrap and waste plastic materials are weighed, recorded, and placed in bins.
Planned review date
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