Evidence of the ability to:
set up rollers and reel or sheet systems for coating a range of aqueous coatings, UV varnishes and machine varnishes and conduct a proof run and adjust settings to ensure production speeds are attained
demonstrate use of control, monitoring and data entry systems
demonstrate all safety devices on the machine
set up for TWO basic coating operations (one spot coating and one overall coating and, if possible, including at least one in-line process) according to manufacturer’s and job specifications, and enterprise procedures.
Note: If a specific volume or frequency is not stated, then evidence must be provided at least once.
To complete the unit requirements safely and effectively, the individual must:
Interpret job specifications
identify where information about the type of required coating is located on the work ticket
explain actions to be taken if vital information is missing from the job ticket
outline checks to be done prior to set up (availability of materials etc.)
For reel systems only
list major work health and safety (WHS) concerns when setting up the reel transportation system
outline safety risks associated with the machine’s rewind section
explain how low web tension and inefficient web splices impacts the print
identify how the machine recognises if there has been a web break
describe effect of excessive web tension at the rewind section of the machine
discuss how to determine reel position for the job
For sheet systems only
list major WHS concerns when setting up the sheet transportation system
discuss how to determine sheet position for the job
explain how appropriate front lays are selected
list reasons for a two-sheet cut-out on most feeders
identify how the machine recognises if a sheet is missing or late
identify how the coating side of the material is chosen
identify why a register check is carried out
Delivery system
identify impact of too much vacuum on slow-down wheels has on the job
describe what determines position of register or bustle wheels
outline impact of excessive jogging on the stack
Coating preparation
list WHS concerns relevant to use of coatings
list THREE types of coating
describe how suitability of coating for the job is determined
outline how ability of the coat to adhere to the product is determined
explain how to determine how much coating is required
describe range of viscosities to be run with on aqueous coatings
outline the impact of incorrect viscosity
explain how to adjust viscosity of a coating
Machine set-up
explain methods the coating uses to solidify
explain what is required to dry UV coating
explain printing principles used to apply aqueous coating
describe what temperature the drier should be set at to dry aqueous coating
outline how to determine which image carrier (plate or blanket) to use
Proofing and adjustments
describe how position of the coating is checked against the print
discuss the impact skeleton wheels have on the coating surface
outline how the amount of gloss on the surface can be measured
identify who is responsible for the final OK on the job
describe the impact of not enough coating on a sheet
describe the impact a UV coating has on a wet print
Information sources
identify machine manuals, safety and other documentation relevant to this task, where are they kept and the information contained.