Glass Bottle Manufacturing Process

Since 1999, LOM Glassworks has been manufactured glass bottles and glass jars primarily for the beverage, food, and cosmetic industries. We have completed the conversion from coal-supplied production to natural gas-supplied production, which is more ecologically friendly.

Our glass bottles and jars are heat-resistant and meet the standards of the food and pharmaceutical industries. After the glass bottle blowing and forming processes are completed, all your glass bottles must undergo a strict quality inspection and safe packaging before they are shipped out to you. We can also provide customized packaging for you.

Our advantages:

  •  With a large inventory of molds
  • We have 8 production lines with a daily capacity of 4,00,000
  • A full range of matching caps and closures for one stop packaging solution
  • Large quantities of stock can be shipped the same day you pay

Start with Drawings

Send us a drawing and we will make a mold from it. Send me a sample, we can make a mold of the sample.

Make a Mold

 Mold is a very critical part of a bottle. Before manufacturing large goods, we can make a sample mold and then adjust the production according to the sample.

These molds consist of mouth molds, bottom molds, and full body molds, and require custom jaws for inspection on the production line.

Raw Materials

A type of glass called soda-lime glass is made from sand, soda ash, limestone, and broken glass mixed together in a certain ratio.

Glass has a melting point inversely proportional to its composition of silica or sand. Glass is crushed by 10% to 20% is typically added to the mixture, and soda ash lowers the melting point of silica.

Adding dyes and other chemicals to colored glass bottles or heat-resistant high-borosilicate glass bottles is necessary if they require additional elements, such as color.

Batching Process

After raw materials are prepared, they are put into a funnel for mixing, and then transported in batches to the batching according to a certain ratio.

After that, the batches are also continuously fed into the furnace.s, magnets are used to remove the transfer and the presence of any ferrous material on the belt, as ferrous material can cause black spots on the clear glass bottles.

Melting process

The raw material is heated and melted in this process, and then melted in the glass melting kiln at about 1400°C to 1600°C.

It is in this stage that the raw material is heated and melted into a viscous substance, after which the water is evaporated, organic matter is burned, and silica is converted into a heat-resistant glass liquid. Finally, it’s cooled to the right viscosity for glass bottles or jars.

Blow Glass Forming Processes

The slicing process cuts the viscous mixture into equal-size glass balls, which are transported to the mold and then blown or pressed into glass bottles or jars.

  • Blow and blow process:

Glass bottles with small mouths, such as perfume bottles, aromatherapy bottles, beverage bottles, and milk bottles are made by blowing and blowing.

By blowing the first shape along the inside of the mold, the blow valve creates the bottle with compressed air. By flipping the bottle again, you determine its shape.

  • Press and Blow Process

Pressed jars with a large mouth, such as storage jars and candle jars.

In the mold, a melted glass ball touches the plunger to form the initial model, then it is reheated and blown until it is set.

During this stage, our engineers clamp out the glass bottles or jars on the production line with pliers to check the molding effect. Based on the actual results, the production process is adjusted.

Annealing and Conditioning

The glass bottle is removed from the mold and placed on a cooling plate, where it is quenched and cooled by a conveyor belt.

To make glass bottles and jars more stable and evenly heated, this process is very important.

Cold and spraying

At a temperature of 100 degrees, a thick layer of polymer is sprayed onto the glass container, giving it a scratch-resistant appearance.


In the production line, all glass bottles are subjected to a thorough light inspection for appearance, product shape, black spots, and to see if they are broken or bubbled, as well as a leak test.


We pack all bottles according to the customer’s requirements and arrange them in an orderly fashion on the export corrugated carton, and finally seal them with a layer of winding film.

Surface Treatment

You may need additional surface treatments such as labeling, silk screening, baking, painting, electroplating, matte, and frosted.

We are a professional glass bottle manufacturer in China and work with beverage and food companies, pharmaceutical companies, and cosmetics companies.
For more details about our glass packaging offering, please get in touch to discuss your requirements further contact LOM Glassworks.
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