Unit 6 Flashcards
(26 cards)
What makes paper and board easy to glue?
They are absorbent, so adhesive sinks in quickly.
What are VOCs?
Volatile Organic Compounds.
What is PVA glue?
Non-toxic, water-based glue for absorbent materials, dries clear.
What does spray adhesive do?
Provides thin, even coverage and bonds instantly.
How do solvent-based adhesives work?
They dissolve surfaces to fuse parts; toxic fumes need ventilation.
What affects adhesive curing time?
Temperature, humidity, materials, and adhesive type.
How does contact adhesive work?
Applied, left to get tacky, then bonds instantly on contact.
What are hot-melt adhesives?
Fast-drying glue used in packaging, not for heat-sensitive materials.
Best adhesives for photo albums?
Glue sticks, spray adhesive, and adhesive corners.
How to seal cardboard boxes?
Tape, steel staples, or hot melt glue.
What adhesives for model planes?
PVA glue and hot glue.
What is screen printing?
Printing through a mesh screen; good for short runs on many materials.
How are screens prepared?
Coated with emulsion, exposed to light through artwork, washed.
How is a screen print made?
Ink is pushed through the screen with a squeegee onto the substrate.
What is offset lithography used for?
High-volume, high-quality printing (magazines, books).
How are printing plates made?
Artwork split into CMYK layers, etched on aluminium plates.
How does offset printing work?
Ink and water apply to plate, ink transfers to blanket, then substrate.
What is flexographic printing?
Uses flexible plates and water-based inks; fast and cheap for large runs.
How does flexo work?
Ink picked up by rollers, applied to raised plate surface (relief printing).
Main digital printing types?
Inkjet and laser printing.
Advantages of digital printing?
Low setup, fast, customizable, works on many materials.
How does laser printing work?
Uses charged drums and toner transferred electrostatically.
How does inkjet printing work?
Sprays tiny ink droplets onto the substrate.
Drawbacks of digital printing?
Poor colour match, surface damage, costly for big runs.
