Glass is the only packaging material rated “GRAS” by the U.S. Food & Drug Administration. maintains the purity of food and beverages preserves a product’s taste or flavor

- No other packaging material matches the shelf impact of glass. maintains the integrity or healthiness of foods and beverages Glass is 100% recyclable and can be recycled endlessly with no loss in quality or purity. -Recycling glass reduces consumption of raw materials, extends the life of plant equipment,

such as furnaces, and saves energy FOR FOODS container of choice for processing high moisture foods withstands exposure to acid food for an extended period of time For Pasteurized foods- glass withstands the temperature and provides needed protection

-analyzing each new shipment of raw materials -monitor certain easily measured physical properties of the glass Eg. a.Density

b.Softening Point

◦ Silica

◦ An Alkali Network Stabilizers

◦ -soda (Na2O)

◦ or Potash (finer glass)

◦ Limestone◦ Cullet (waste glass)

Na2O - CaO - Al2O3 - SiO2 Glass

Glass Added Substance-Oxides Use Example

Lead -Brilliance-Weight

Boron -Thermal &Electrical Resistance

Barium Refractive Index

Cerium Absorb IR

Glass Added Substance-Oxides

Use Example

Metallic Oxides Add color

Manganese De-colorization

Because glass is chemically inert, it is the consumer's perfect protection for food and beverages.

Glass is one of the most sustainable packaging materials on earth, taking into consideration all carbon footprint factors.

Glass is true "cradle-to-cradle" packaging - meaning it can be recycled infinitely to be re-made into bottles, jars or containers that are equally pure as the original. The recycled product is so pure that it can again touch food or beverages.

Glass' impervious nature also makes it difficult to tamper with the package contents protects delicate flavors and defend against oxidation Increased visibility and shelf impact Ability to act as decoration Flexibility in size, shape, and closure

Marketers Rely on Glass Packaging to Deliver Consumer Convenience

Microwavable convenience (for many glass jars)

Ease in resealing Flexible design Extreme portability Reusable

Lug or Twist Cap

Lug is an inward protrusion from the curl of the cap side or skirtLug caps are secured to the finish by twisting the cap onto the finish which seats the lugs of the cap with the threads of the glassVacuum maintains the seal

Plastisol-Lined Continuous Thread Cap

This cap consists of a metal shell with a threaded skirt

Cap contains a flowed-in plastisol gasket and is applied by screwing the closure onto the glass finish

Press On-Twist-Off Cap

Gasket is molded Plastisol that covers the sealing area that extends from the top down the side

Body of Glass Package:◦ Largest portion of the glass container ◦ Lies between the Finish and the Bottom of the package◦ Body can be in different shapes and sizes

Bottom of Glass Package◦ Bottom has the bearing surface or the portion of container upon which it rests◦ Bottom or bearing surface may have special configuration (Stacking feature)

designed to provide a degree of interlocking

Two properties of design: Significance Utility

Glass container manufacturing quality is a direct correlation to the process controls in place and to standards in which these controls are held:BatchingMeltingConditioningFormingPackagingWarehouseShipping

Glass Enhancements Applied Ceramic Labeling (ACL) or Silk Screening Heat Transfer Labeling: Shrink Sleeve Pressure Sensitive Labeling Cut and Stack Labeling

Glass Surface Treatments Acid Etching Embossing Specialty Colors Debossing

Surface TreatmentAt the hot end of the glass making process, a very thin coating of tin oxide is

applied to the containers.

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