I will explain and introduce the physical and chemical factors that cause glass to break!
To break glass, it is often due to physical factors such as "making contact with a hard object on glass or mirrors" and chemical factors like "pouring hot water into a cup." When cooling and solidifying glass products, there are countless tiny scratches (cracks) on the surface that are not visible to the eye, and the scratches (cracks) at the points of contact with hard objects spread and cause breakage. Additionally, it is generally said that when the temperature difference exceeds 60°C, the risk of glass expanding and breaking becomes very high. Pouring 100°C hot water into a cup at 20°C (room temperature) significantly increases the risk of breakage. *For more details, please refer to the PDF document or feel free to contact us.*
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Tokyo Special Glass Co., Ltd. has been dedicated to glass processing since its establishment and is currently a company that primarily handles ultra-precision polishing processes, including substrates for LCD photomasks and automotive mirrors. For chemical strengthening and glass polishing (quartz and blue plate) photomasks, please feel free to consult with us.