Do Hot Products Damage Glass Packaging and What Could These Damages Be?

Glass packaging, preferred in many industries for its sleek appearance and sustainability, has its sensitivities like any material, including sensitivity to heat and potential damage under certain conditions. So, can hot products damage glass packaging? If so, what kind of damage can occur?

Resistance of Glass to Heat

Glass is made by melting raw materials such as silica sand, soda ash, and limestone at high temperatures until they blend homogeneously. The thermal expansion properties of glass make it sensitive to sudden changes in temperature. When heated, glass expands, and it contracts when cooled. This phenomenon, known as thermal expansion, occurs in all materials but is relatively significant in glass. If glass is heated or cooled too quickly, the expansion and contraction may not be uniform. This can result in internal stresses that can cause the glass to crack or even break.

What Are the Damages?

Direct contact with a very hot product can cause thermal shock in glass. This situation creates sudden and extensive stresses within the structure of the glass. Even heat-resistant glasses have a certain temperature limit, and exceeding these limits can damage the glass. This physical manifestation can result in cracks or breakage of the glass product. Especially, transferring hot liquids directly into a glass container at room temperature can be risky.

What Precautions Are We Taking?

No one wants broken or cracked glass products. What are we doing to prevent such outcomes?

Annealing Process: Annealing is the process of heating and then slowly cooling the glass to make it more durable and resistant to breakage. This process eliminates internal stresses that may have formed during the manufacture or processing of the glass, thereby making the glass products resistant to impacts and temperature changes.

Quality Control Processes: We carefully monitor the quality control processes during our production. One of the necessary quality control tests is the thermal shock test. We subject our products to thermal shock tests and review the results before reannealing products that fall outside the limit values. Thus, we do not sell any products that do not meet the desired thermal resistance values.

 

22.05.2024