Glass Packaging
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Transcript of Glass Packaging
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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