NZQA registered unit standard
27896 version 1
Page 1 of 3
Title
Evaluate leather drying methods and conditioning
Level
5
Credits
Purpose
5
This unit standard is for experienced people wishing to develop
their technical skills in leather manufacture.
People credited with this unit standard are able to: demonstrate
knowledge of leather drying; evaluate leather drying methods;
and evaluate leather conditioning.
Classification
Fellmongery and Leather Processing > Leather Processing
Knowledge
Available grade
Achieved
Explanatory notes
None.
Outcomes and evidence requirements
Outcome 1
Demonstrate knowledge of leather drying.
Evidence requirements
1.1
Principles of leather drying are explained in terms of the nature of the water
contained within the leather and the phases of water removal.
Range
1.2
evidence is required of three of the following – free water,
combined water, constant drying rate, falling rate, equilibration.
Principal factors governing the removal of water from wet leather are outlined in
relation to tannery processes.
Range
evidence is required of three of the following – mechanical
dewatering, air circulation, air velocity, temperature, humidity,
time.
Outcome 2
Evaluate leather drying methods.
Primary Industry Training Organisation
SSB Code 101558
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
27896 version 1
Page 2 of 3
Evidence requirements
2.1
Leather drying methods are evaluated in terms of the equipment used and its
operation.
Range
2.2
evidence is required of three, which may include but are not
limited to – paste, toggle, vacuum, radiation, hang, microwave.
Drying methods for different leather types are evaluated in terms of suitability.
evidence is required of three of the following – clothing, upper,
upholstery, woolskins, vegetable leather.
Range
2.3
Leather drying methods are evaluated in terms of advantages and
disadvantages.
evidence is required of two of the following – paste, toggle,
vacuum, hang.
Range
Outcome 3
Evaluate leather conditioning.
Evidence requirements
3.1
Reasons for conditioning leather after drying are evaluated in terms of product
requirements.
3.2
Methods of leather conditioning are evaluated in terms of common tannery
practices.
evidence is required of two of the following – sawdusting, water
spray, high frequency, drum conditioning.
Range
Replacement information
Planned review date
This unit standard replaced unit standard 8406.
31 December 2017
Status information and last date for assessment for superseded versions
Process
Version Date
Last Date for Assessment
Registration
1
21 February 2013
N/A
Consent and Moderation Requirements (CMR) reference
0033
This CMR can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.
Primary Industry Training Organisation
SSB Code 101558
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
27896 version 1
Page 3 of 3
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 the Primary Industry Training Organisation standards@primaryito.ac.nz if
you wish to suggest changes to the content of this unit standard.
Primary Industry Training Organisation
SSB Code 101558
 New Zealand Qualifications Authority 2016