NZQA Expiring unit standard
22438 version 3
Page 1 of 5
Title
Demonstrate knowledge of carpet finishing
Level
5
Credits
18
Purpose
People credited with this unit standard are able to: demonstrate
knowledge of the purpose of carpet finishing; secondary
backing fabrics and backcoating chemical compounds for
carpets; the methods of backcoating and laminating carpets;
demonstrate knowledge of brushing, steaming, and shearing of
carpets; special finishing treatments of carpets; and quality
management in carpet finishing.
Classification
Textiles Manufacture > Carpet Manufacture
Available grade
Achieved
Explanatory notes
None.
Outcomes and evidence requirements
Outcome 1
Demonstrate knowledge of the purpose of carpet finishing.
Evidence requirements
1.1
The main purpose of carpet finishing is explained in terms of carpet quality and
durability.
1.2
The steps in carpet finishing are identified in accordance with the carpet type.
Range
tufted, woven.
Outcome 2
Demonstrate knowledge of secondary backing fabrics and backcoating chemical
compounds for carpets.
Evidence requirements
2.1
The principle technical functions of a secondary backing fabric are explained in
terms of carpet manufacture.
Competenz
SSB Code 101571
 New Zealand Qualifications Authority 2016
NZQA Expiring unit standard
22438 version 3
Page 2 of 5
2.2
Backing fabrics and/or backing components and backcoating chemical
compounds for tufted carpet are identified and explained.
2.3
Backing fabrics and/or backing components and backcoating chemical
compounds for woven carpet are identified and explained.
2.4
Backing fabrics and/or backing components and backcoating chemical
compounds for bonded carpet are identified and explained.
2.5
Backing fabrics and/or backing components and backcoating chemical
compounds for needlepunched carpet are identified and explained.
2.6
Specialty backings are identified and explained in terms of provision of carpets
with special properties.
Outcome 3
Demonstrate knowledge of the methods for backcoating and laminating carpets.
Evidence requirements
3.1
The methods for backcoating chemical compounds backcoating are explained
in terms of the carpet type.
Range
3.2
The methods for laminating carpets are explained in terms of the carpet type.
Range
3.3
preparation for backcoating, latex formulations, double pan
systems, unitary backing application, foam application, drying and
curing.
single pan laminating system, kiss coating, pile down laminating.
Post backfinishing processes are explained in terms of carpet type.
Range
edge trimming, anti-shading, accumulators inspection, measuring,
cutting and rolling, wrapping.
Outcome 4
Demonstrate knowledge of brushing, steaming, and shearing of carpets.
Evidence requirements
4.1
The purposes of brushing and steaming are explained in terms of benefits to the
carpet.
4.2
The processes for brushing and steaming of carpets are explained in terms of
carpet finishing.
Range
Competenz
SSB Code 101571
drying latex, jetting steam.
 New Zealand Qualifications Authority 2016
NZQA Expiring unit standard
22438 version 3
Page 3 of 5
4.3
The principles of shearing (or cropping) are explained in terms of the carpet
type.
4.4
The essential components of a shearing (or cropping) machine are described in
terms of their function in relation to carpet type.
Range
4.5
bed, fixed blade, helical (or spiral) blade, multi-headstock
machines.
Shearing (or cropping) machine ancillary equipment is described in terms of its
function.
Range
face brush, pile lifter, proximity sensors, seam passage control,
metal detectors.
Outcome 5
Demonstrate knowledge of special finishing treatments for carpets.
Evidence requirements
5.1
The processes used to apply insect-resist treatments are explained in relation to
special finishing treatments.
Range
5.2
The processes used for elimination of pile reversal (shading) are explained in
relation to special finishing treatments.
Range
5.3
fluorochemicals – protect against soiling and staining agents.
The processes used for application of chemical treatments are explained in
relation to special finishing treatments.
Range
5.5
brushing, using a roller, shearing, cutting, storage.
The processes used for application of protective treatments for nylon and wool
carpets are explained in relation to special finishing treatments.
Range
5.4
dyebath application, application during scouring, powder
application.
chemical washing, dyeing, drying, dry finishing.
Identify faults associated with dimensional instability.
Outcome 6
Demonstrate knowledge of quality management in carpet finishing.
Range
woven, tufted.
Competenz
SSB Code 101571
 New Zealand Qualifications Authority 2016
NZQA Expiring unit standard
22438 version 3
Page 4 of 5
Evidence requirements
6.1
Inspection and mending processes are explained in relation to quality
management in carpet finishing.
Range
6.2
specifications, quality control.
The general rules for achieving carpet manufacture reliably and without faults are
explained in accordance with a carpet specification.
Range
6.3
avoiding stoppages, machinery and settings, machine control
devices, machine maintenance, housekeeping methods.
Faults in plain carpet are explained in terms of their effect on the carpet quality.
visible – stripes, streaks, bands, colour;
non-visible – stitch rate, gauge, pile height.
Range
6.4
Faults in carpet finishing are explained in terms of their effect on the carpet quality
and durability.
Range
6.5
uneven steaming during secondary backing, uneven latex
application, poor drying/curing of latex, inferior secondary backing
material, too much/too little latex applied, too much/too little filler in
latex.
Additional faults in patterned carpets from dyed yarn are explained in terms of
their effect on carpet quality and durability.
Range
incorrect yarn colour, incorrect colour sequence on creel, incorrect
sequence on sliding needle bar, incorrect scroll pattern, damaged
scroll pattern, incorrect pattern disc, crossover shift marks.
6.6
Methods for rectifying faults in carpet are described in accordance with the fault
type.
6.7
The significance of high speed machinery is explained in terms of product quality,
durability, and production processes.
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 Assessment
Registration
1
19 May 2006
31 December 2019
Rollover
2
16 July 2010
31 December 2019
Review
3
19 May 2016
31 December 2019
Competenz
SSB Code 101571
 New Zealand Qualifications Authority 2016
NZQA Expiring unit standard
22438 version 3
Page 5 of 5
Consent and Moderation Requirements (CMR) reference
0030
This AMAP 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, or
an inter-institutional body with delegated authority for quality assurance, 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.
Consent requirements and an outline of the moderation system that applies to this
standard are outlined in the Accreditation and Moderation Action Plan (AMAP). The
AMAP 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 the Apparel and Textile Industry Training Organisation
training@atito.org.nz if you wish to suggest changes to the content of this unit standard.
Competenz
SSB Code 101571
 New Zealand Qualifications Authority 2016