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Elements and Performance Criteria
Required Skills
Evidence Required
Range Statement
The Range Statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance. Add any essential operating conditions that may be present with training and assessment depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts.Where reference is made to industry codes of practice, and/or Australian/international standards, the latest version must be used.ContextThis competency applies to all joining operations where a solid polymer is joined to another substrate. It includes the operation of all relevant additional equipment where that equipment is integral to the joining process.ProceduresAll operations are performed in accordance with procedures.Procedures include all relevant workplace procedures, work instructions, temporary instructions and relevant industry and government codes and standards.Substrate suitabilitySubstrate suitability includes:surface soundnesssurface preparation such as grit blasting, etching, sanding, buffing, scraping, machining or other preparationssubstrate porositysurface pits, protrusions or other irregularities.Joining materialsJoining materials include:adhesives (such as commercially available materials 'Loctite, Sikaflex, Plexus)cohesives solvents (such as aliphatics, ketones, aromatics)other materials (such as glues, fillers)Joining material preparationJoining material preparation includes:mixing one pot materials to achieve homogeneityblending two (or more) pot material componentsthinning (eg with solvent) if requiredmeasuring components for blends.Joining material applicationJoining material application to include:correct application rateeven applicationeconomical applicationcorrect application method.Contact between surfacesContact between surfaces may be effected by:use of hand rollersuse of pressesmay be achieved as part of the curing process where this is done under pressureother relevant equipment.Tools and equipmentThis competency includes use of equipment and tools such as:application equipment (eg brushes, syringes, pipettes, spray guns, application scrapers)additional equipment (eg vapour extraction, application booths)manual handling aids (eg hand carts, trolleys)hoists/lifting equipment not requiring any special permits or licences relevant personal protective equipment.HazardsTypical hazards include:spills and splashes toxic fumes or vapours hazardous materialsmanual handling hazardsflammable vapours.Problems'Respond to routine problems' means apply known solutions to a limited range of predictable problems. Typical process and product problems may include:incorrect selection of joining materialsvariations in materialscontamination of joining materials or substrates inappropriate application of materialsdust and other contamination drying ratesfilm thickness variationfilm application ratescoveragetack (too much, not enough, long leg/short leg)products with substrate or other faults.Appropriate action for non-routine problems may be reporting to designated person or other action specified in the procedures.VariablesKey variables to be monitored include:application patternsadhesive consistencysubstrate preparation, condition and finishadhesive viscositysolvent/thinner blend ratios.