How to choose the right glass cup for you
Glass cup is relatively cleaner and more hygienic than plastic cups, and people usually prefer glass cups to plastic cups. But do you know how to choose a glass cup correctly? If you choose it incorrectly, 유리 컵 can also pose health risks. In this article, we will teach you how to choose the right glass cup for drinking.
- How to Choose a Glass Cup
1) Transparency: Clear glass cup must have no noticeable color.
2) Bubbles: A certain number of bubbles of a certain width and length are permitted, but bubbles pierceable by a needle are not permitted.
3) Transparent Bumps: This refers to uneven melting of the glass. Glasses with a capacity of less than 142L and a length no greater than 1.0mm are only permitted to have 142 bumps. Glasses with a capacity of 284-1.5ml and a length no greater than 1mm are also permitted to have only one bump. Bumps with a transparency of 3/3 are not permitted.
4) Particles: This refers to opaque, granular debris. The length must be less than 0.5mm, and no more than one is permitted.
5) Roundness: This refers to the degree of non-roundness of the glass. The diameter difference must be less than 0.7-1.0mm.
6) Streaks: Visible streaks at a distance of 300mm are not permitted.
7) Cup Height Deviation (Cup Height Deviation): The cup height difference should not exceed 1.0-1.5mm.
8) Cup Thickness Defect: No greater than 0.5-0.8mm.
9) Shear Marks: These are linear or centipede-shaped shear marks, no longer than 20-25mm and no wider than 2.0mm. Only one mark is acceptable. Shear marks extending beyond the cup base or appearing grayish or shiny, exceeding 3mm are not permitted.
10) Template: The cup body is a record of the hidden lines; a flat top is clearly not permitted.
11) Cup Concavity: This refers to unevenness in the cup body. A noticeable flat top is not permitted.
12) Friction and Abrasion: Friction refers to the friction between the glass and the cup diameter, leaving a mark of tarnish on the cup body. This is clearly not permitted. Scratches refer to scratches on the cup surface caused by collisions between glasses. A lack of gloss is not permitted.
- What do the numbers on the bottom of the 유리 컵 mean?
The numbers on the bottom of the glass cups are actually the mold numbers for the glass. The press is like a turntable. Molds are attached to the turntable, each numbered. The turntable typically has eight or ten molds in a circle, with a punch fixed on top. Glass is fed through a barrel and dropped into the mold. The punch then descends, forming the glass beneath it. The glass is then manually removed and placed in an annealing lehr, resulting in the finished glass.
During the production process, some molds may become damaged. Large defects are obvious at a glance, but smaller ones are harder to spot while the glass is still hot. They may not be discovered until it emerges from the annealing furnace. If a particular cup is defective, you can discard the batch based on the number on the bottom of the cup, rather than sorting through them one by one. 비슷하게, you can replace the corresponding mold based on this number.
