Approximately 100,000 tons of plastic waste end up in the sea every year. It takes several hundred years for the plastic to completely decompose. During this decomposition process, substances harmful to the environment and human health are released. These substances harm marine animals, which ingest them through their food. Since we humans eat fish, for example, these pollutants can also reach us.
Therefore, it is important to be aware of the consequences of excessive plastic consumption and to know and use environmentally friendly alternatives.
Glass is a sustainable alternative for plastic. It is one of mankind’s oldest materials and brings with it many valuable benefits.
How is glass manufactured?
The main chemical constituents of glass are sand, silica, boron trioxide and phosphorus pentoxide. They are melted in fireproof-lined furnaces. Subsequent supercooling of the molten mass produces the translucent solid glass. Physically, glass is also referred to as a solidified liquid. Subsequently, there are various processes for glass production.
Nowadays, flat glass is usually produced by drawing or rolling the molten glass. In addition, there is the so-called industrial float glass process, which is also frequently used. In this process, the molten glass is fed onto a bath of molten tin. The glass then floats there and the flat glass is formed naturally by cooling. Hollow glass is produced either by the mouth-blowing process or mechanically by blowing or pressing the molten glass into molds.
What types of glass can be found?
Depending on the field of application, glass can be divided into the following groups:
- Household and packaging glass
- Window and mirror glass
- Art glass
- Optical glass
- Apparatus and laboratory glass
How to transform glass and what are the possibilities in the processing?
To work with glass, it needs to be melted again. In its viscous state, it can be formed at well over 1,000 degrees. Depending on the desired end product, processing is either fully automated, partially automated or manual. The art of the glassware maker’s craft is to bend, draw or string the glass into the desired shape through precise and exact manual work.
In addition, the surface of glass can be treated. For example, grinding, coating and sandblasting are possible techniques.
What are the characteristics of glass?
The material that makes up glass combines many positive and valuable properties.
1. It consists of natural and nature-identical raw materials, and contains no plastic. In addition, almost every type of glass can be recycled. Recycling used glass not only relieves the burden on waste disposal, but also saves raw materials and energy. This is because recycling glass uses up to 40% less energy than glass production. For this reason, glass straws are made of recyclable glass, so they are completely environmentally friendly.
2. The complete tastelessness of glass is a significant advantage, especially in comparison with material such as stainless steel, which can bring a slight inherent taste. For example, when drinking from a glass straw, you taste only the full flavor of the beverage — exactly as it should be. In addition, glass is odorless.
3. Another quality of glass is its optical transparency. This is very advantageous in the household sector and especially for glass drinking straws, as it means that the cleanliness of the glass straws can be seen at first glance.
4. Did you know that glass is not a good conductor of heat? This means you can even hold your glass straw in your hand when there is hot tea in your cup without fear of being burned.
5. Besides, glass keeps its shape when it is cold after manufacturing. Even when glass is exposed to high temperatures, it keeps its shape up to about +600 °C. Therefore, the glass drinking straws of halmig.de can be hygienically cleaned at high dishwashing temperatures. Hot water can also be poured over the glass drinking straw without any problems for preparing a tea.
What is special about the glass drinking straws from halmig?
These glass drinking straws are made of recyclable, high-quality SCHOTT glass from Germany. This means that the glass drinking straws can be recycled as often as desired, without any loss of quality and the glass can be used an infinite number of times.
They produce the glass drinking straws by hand in a glassblowing manufactory in the beautiful south of Munich. Different lengths and designs of drinking straws are created — so there is the perfect straw for every glass!
One special feature is the colored printing of the glass drinking straws with lettering and logos. This makes them perfect as an advertising medium for companies and as a visual highlight for private use.
1 straw and many advantages:
✓ 100% plastic-free & environmentally friendly.
✓ Made in Germany from 100% recyclable special glass
✓ Tasteless & BPA-free
✓ Easy to clean & dishwasher safe
✓ Heat & cold resistant (- 40 °C to + 400 °C)