What are the processes involved in the production of glass water cups?

The production of glass water cups involves several processes. Below, I will describe the general production processes for glass water cups and their specific tasks:

Raw Material Preparation: The main raw materials for glass water cups include quartz sand, alkali, limestone, and alumina. These materials are mixed in specific proportions and melted at high temperatures to form molten glass.

Forming Processes:

a. Blowing Process: Molten glass is taken out of the glass furnace and blown into molds using a glass blowing pipe. Craftsmen blow air into the mold according to its shape and design, while using tools to adjust the shape gradually, transforming the molten glass into the shape of a cup.

b. Vacuum Thermoforming Process: Molten glass is poured into molds in a vacuum thermoforming machine, and negative pressure is applied to shape the molten glass according to the mold's shape.

c. Pressing Process: Molten glass is placed into pre-made molds and then pressed into the shape of a cup using pressure.

Annealing Treatment: To eliminate internal stresses generated during the forming process and enhance the strength of the glass water cup, the formed cups are slowly heated and cooled in an annealing kiln.

Bottom Production: According to design requirements, the bottom of the cup is processed or affixed with a base to enhance stability and durability.

Surface Treatment: Depending on requirements, the glass water cup may undergo surface treatments such as sandblasting, polishing, coating, etc., to enhance texture and aesthetics.

Quality Inspection: Throughout the production process, strict inspections are conducted for each step, including size, transparency, appearance, flatness, etc., ensuring that the cups meet relevant standards and quality requirements.

Packaging: Finished glass water cups are packaged using materials such as cardboard boxes, foam plastics, protective pads, etc., to prevent damage during transportation and storage.

The above describes the general production process for glass water cups. The specific tasks may vary based on different manufacturers and cup designs. Throughout the entire production process, strict quality control and technical requirements are key to ensuring the production of high-quality glass water cups.