Our raw material

In theory two out of every three glass containers produced by Saint-Gobain Oberland AG these days are made of melted-down recycled glass; equally theoretically therefore, every disposable glass container is manufactured using material from the recycling process - a major contribution to resource conservation and waste prevention.

Glass is the only raw material that can be melted down repeatedly to create new glass packaging - as often as required!

Humanity has been using glass packaging for 4000 years - it is a raw material that has never polluted the environment, not even when discarded as waste.

Raw materials

Recycled glass has been our primary raw material for years: 

  • Up to 80% of green glass 
  • Up to 75% of brown glass
  • Up to 60% of clear glass

Glass recycling

Unter folgenden Punkten erfahren Sie alles zum Thema Glasrecycling

  • The right collection technique
  • Not all glass is the same
  • What about other colored glass?
  • Glass recycling
  • Recycling – disposables
  • Recycling – re-usables
  • Processing recycled glass
  • Recycling technology

The right collection technique

The percentage of waste glass shards used in glass manufacture largely depends on shard colour purity. Only then is it possible to adhere to high proportions of recycled glass when producing new glass.

To increase levels of recycled glass, used glass containers need to be consistently separated into CLEAR - GREEN - BROWN from the outset.

Not all glass is the same

Glass suitable for the bottle bank:
All drinks bottles as well as all jars (preserved vegetables, fruit and pickles, jam, mayonnaise, ketchup, baby food) and glass receptacles used for pharmaceuticals, cosmetics and perfumes

Glass not suitable for the bottle bank:
Glass cookware, light bulbs, glass lampshades, mirrors, plate glass, and ceramic glass hotplates all have a higher melting point than conventional container glass.

What else doesn’t belong in the bottle bank:
Bottle banks are not bins for tin or aluminium cans, lead capsules from bottlenecks, china, crockery or stoneware, plastics, or other contaminants such as paint residues, chemicals, or similar.

What about other coloured glass?

Other coloured glass may simply be disposed of with green glass. Compared to other glass types, green glass can accommodate a greater proportion of incorrect pigment during the melting-down process.

Glass recycling

This recycling system, established and operated thanks to our investment, has proven so successful that it formed the basis for the reusable materials collection now being operated on a nationwide basis by the Duales System Deutschland GmbH.

Glass recycling per se is not really an innovation - glass manufacturers have always fed their own shards back into the melting process.
However it was Oberland Glas AG that began the systematic collection of glass 25 years ago, sorting it by colour and processing it into oven-ready raw material.

We believe such recycling is one of the most effective approaches when it comes to reducing waste. Waste incineration, even in the case of downstream energy generation, can only be the solution for potentially hazardous or non-recyclable packaging materials.

Recycling disposables

Disposables recycling guarantees the reuse of materials in a closed cycle system – 97.6 % of all glass collected is melted down and moulded to create new and often identical glass containers.

Recycling re-usables

If rejected during bottling, re-usable glass bottles are also fed into the continuous system of glass recycling.

Processing recycled glass

Glass recycling means processing recyclable used glass intended for the production of new glass containers to such a degree that it matches the quality of the original raw materials used in glass container manufacture. After all, the greater the proportion of used glass included - for green glass now as much as 96% - the higher the standards concerning used glass purity, i.e. it must be free from foreign matter and pure in colour.

Recycling technology

Recycling technology


EnvironmentIf we are seriously to consider the environment as a rare commodity, we must explore every possible means of reducing our consumption of energy and raw materials.
We need to focus on avoiding linear processes; rather than producing waste, material and energy should circulate in closed cycles. What cannot be recycled into the production process directly is carefully and correctly sorted and forwarded to external cycles for recycling.
For decades our closed cycle processing of all possible media, not to mention the multiple use of surplus heat generated by the “high-temperature” melting process via so-called "energy cascades”, has reflected a high standard of environmentally sustainable production.