GCM 210 Midterm: GCM 210 Week 2 Notes

• School: Ryerson University
• Department: Graphic Communications
• Course: GCM 210
• Professor: Natalia Lumby

Document Summary

The material on which we print is referred to as a substrate. Other materials used in packaging that we don"t directly print on, we can call simply materials: eg. a typical beer bottle has a paper label (substrate) and a glass bottle (material) Common examples in packaging include plastic, paperboard, metal, corrugated, and glass. One of the oldest forms of packaging. Common colors include clear (flint), green, and amber. General glass workflow: ingredients are mixed > melted > formed > annealed > coated > inspected. Ingredients of glass include: silica sand, soda ash and lime stone as well as cullet (recycled glass, cullet is faster to melt; so recyclable. These are melted at temperatures over 1000 degrees celsius. Gob: the amount of glass needed to make a bottle. Advantages: inert (doesn"t interact with or taint what it contains) Very important in food and pharma: great for long term storage, good vertical strength for stacking, can be hot filled, highly recyclable.