NEWS / Jinghua Glasswork

Some friends who are more concerned about the glass industry may often hear people mention Double wall mini glass cup. We often come into contact with glass vacuum flasks, but because many people do not know enough about the glass industry, all kinds of questions have arisen around it. In order to help you better understand how to buy double wall glass tea cups, and what types of double wall mini glass cups are commonly used.

How to buy Double wall mini glass cup

  1. Whiteness: no obvious color and luster is required for clear glass.

  2. Air bubbles: A certain number of air bubbles with a certain width and length are allowed, while air bubbles that can be pierced with a steel needle are not allowed.

  3. Transparent lumps: refers to the glass body with uneven melting. For glass cups with a capacity of less than 142L, no more than one with a length of no more than 1.0mm; for a glass cup with a capacity of 142~284mL, no more than 1.5mm in length. One, the transparent lumps of 1/3 of the cup body are not allowed to exist.

  4. Miscellaneous particles: refers to the opaque granular sundries, the length is not more than 0.5mm, and there is no more than one.

  5. Cup mouth roundness: refers to the cup mouth is not round, and its diameter difference is not more than 0.7~1.0mm.

  6. Stripes: Visual inspection at a distance of 300mm is obviously not allowed.

  7. Low deviation of cup height (low deviation of cup height): The height difference of a cup body is not more than 1.0~1.5mm.

  8. Thickness difference of cup mouth: not more than 0.5~0.8mm.

  9. Shearing marks: refers to stripes or centipede-shaped shear marks, no more than 20~25mm in length and no more than 2.0mm in width, exceeding the bottom of the cup, or white and shiny, and no more than 3mm is allowed.

  10. Die-printing: The cup body is a hidden imprint of the record pattern, which is obviously not allowed in the head-up view.

  11. The cup body is deflated: refers to the unevenness of the cup body, which is not allowed when viewed from the top.

  12. Wiping and scratching: Wiping refers to the friction between the Double wall mini glass cup and the diameter of the glass, leaving traces of tarnishing on the body of the cup, which are obviously not allowed. Scratches refer to the bruises left on the surface of the cups due to collisions between the glasses, and shiny ones are not allowed.