Glass bottle production process Best new 2023

1 – Raw materials for glass bottle manufacturers

Most of the raw materials used to make glass bottles are sand, soda ash and limestone, and crushed glass is added to this mixture.

Crushed glass is broken glass, either as waste from the manufacturing process or from recycling centres, saving 1,300 pounds of sand, 410 pounds of soda ash and 380 pounds of limestone for every ton of glass recycled. This saves on manufacturing costs, cost and energy savings and allows customers to get an economical price on our products.-Glass bottle production process

2 – Melting of raw glass bottles in a furnace

The raw materials and crushed glass are continuously melted at high temperatures, around 1650°C. The furnace operates 24 hours a day and the raw material mixture is formed into molten glass in about 24 hours.

The molten glass passes through The molten glass passes through a forehearth and then at the end of the forehearth the glass stream is cut into pieces according to weight at a precisely set temperature.-Glass bottle production process

3 – Glass bottle/jar moulding

Two moulding methods are applicable: pressure-blowing or blow-blowing, carried out in IS machines.

4-Annealing in the glass bottle manufacturing process

Regardless of the process, blown glass containers are usually given a surface coating after they have been moulded. While they are still hot, to make the bottles and jars more resistant to scratching, this is known as the hot end surface treatment, and the glass bottles are then taken to an annealing furnace, where their temperature is restored to approximately 815 °C, and then lowered progressively to below 480 °C. This will take approximately 4 hours.-Glass bottle production process

This will take about 2 hours. This reheating and slow cooling removes the pressure from the container. This enhances the robustness of naturally occurring glass containers. Otherwise, the glass could easily break.-Glass bottle production process

5 – Quality inspection of glass bottles

Prior to inspection, they are usually subjected to a cold end surface coating process that reduces the temperature of the glass container to around 100°C, otherwise the glass scratches easily.

After leaving the cold end of the annealing furnace, to ensure product quality, we use Led Beam Technology (Led Inspection), Camara Inspection Machines, and Integrated Inspection Machines to detect faults not visible to the naked eye.

These include, but are not limited to: closure surface inspection, dimensional analysis, wall thickness inspection, breakage detection, edge and bottom scanning, and wall scanning.

Any bottles that do not meet the standards will be automatically rejected and these rejected bottles will be re-melted and re-used as raw material. Automatic inspection will ensure consistent quality for our customers.-Glass bottle production process

6 – Glass bottle packaging

The way in which the glass bottles are packaged will depend on the customer’s requirements. Usually we use the following two methods of packaging.-Glass bottle production process

Standard palletised and carton palletised.

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