How to Check Quality of Glassware Mugs – A Practical Guide for Businesses
Whether you're a wholesaler, brand owner, or retailer, choosing the right glassware mugs for your market can feel overwhelming. There are so many options – different materials, shapes, safety standards – and getting it wrong means unhappy customers and extra costs.
Don't worry. We've put together a checking list to help you inspect the goods and pick the best glass mugs for your needs. Since our company has full experience in the glass industry and have produced a lot of Whisky Tasting Glass, Ice Cream Glass Cup, Gold Rimmed Glassware Set, Big Beer Glass, etc for worldwide clients, we are capable to produce high quality glass mugs and also have strict quality checking system during production. Let's walk through it one by one.
1. Whiteness: no obvious color and luster is required for clear glass.
2. Bubble: bubbles of a certain width and length are allowed to exist in a certain number, but bubbles that can be pierced with a steel needle are not allowed to exist.
3. Transparent lumps: refers to the glass body with uneven melting. For glass cups with a capacity of less than 142mL, 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: the cup mouth is not round, and the difference between the maximum diameter and the minimum diameter 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 between the highest point and the lowest point of a cup is not more than 1.0~1.5mm.
8. Thickness difference of cup mouth: not more than 0.5~0.8mm.
9. Shearing mark: 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 to be obvious from the head-up view.
12. Wiping and scratching: Wiping refers to the friction between the 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 when the glasses collide with each other. The shiny ones are not allowed.
