Reliable Glass Bottles, Jars, Containers Manufacturer | Roetell

HOW IS GLASS MADE: A STEP-BY-STEP PROCESS

Author: Roe Li

Ingredients For Glass Bottle

In order to make clear glass, the right set of raw materials is required. This consists of silica sand (SiO2), sodium oxide (Na2O) from soda ash, calcium oxide (CaO) from limestone/dolomite, dolomite (MgO), and feldspar (Al2O3). These ingredients are mixed in the right proportion, and the entire batch is flown into a furnace heated to 1500 degree Celsius.

A Step By Step Glass Bottle Process

1. Melting and Refining

Melting and refining are pivotal stages in the intricate process of glass manufacturing, where raw materials transform into molten glass, ready to be shaped and molded into various forms. In order to impart colour to the glass, certain metal oxides are also mixed in the batch.

2. Moulding And Forming

Melting and refining are pivotal stages in the intricate process of glass manufacturing, where raw materials transform into molten glass, ready to be shaped and molded into various forms.Glass production encompasses both machine molding and manual molding techniques.

Manual molding methods include blowing, drawing, pressing, and lampworking.

  • Blowing: Using a nickel alloy blowpipe, a ball of glass is picked and blown while being turned in the mold. This technique is ideal for forming glass bubbles, bottles, balls, goblets, and lenses.

  • Drawing: After blowing small bubbles, another worker attaches them to a top plate. Together, they blow and draw the glass, commonly used for making glass tubes or rods.

  • Pressing: Glass is picked into a ball, cut with scissors, and allowed to fall into a concave mold. It is then pressed with the mold to form items like cups and plates.

  • Lampworking: This method involves using colorful glass rods as the primary material. Heating the rods with oxygen and liquefied gas causes them to melt quickly. Operators then shape the molten glass using small tools like pliers and blades. Lampworking produces a variety of products including jewelry, ornaments, candlesticks, and picture frames, characterized by their unique shapes, vibrant colors, and exquisite clarity.

3. Annealing:Eliminating Internal Stresses

Next, in order to remove the internal stresses built up in glass, a process called annealing is done. Next, to remove the internal stresses built up in the glass, a process called annealing is done. 

why does it bring internal stress? During the forming process, glass experiences significant temperature fluctuations and shape alterations, resulting in thermal stress within the material. This thermal stress can compromise the strength and thermal stability of the glass product. Direct cooling after formation increases the risk of spontaneous breakage during the cooling phase or while in storage, transit, or use thereafter. annealing process allows the glass ribbon to pass through a layer which eliminates any stresses on the glass surface and gradually cools it to give it its final hardened form.

4. Inspecting

Through acute and advanced inspection technology, more than a 100 million inspections can be made throughout the glass manufacturing procedure to identify air bubbles, stresses or grains of sand that refuse to melt. This is essential in quality-proofing the final form of glass.

At Roetell Glass, we take pride in our commitment to quality at every stage of production. Our factory boasts cutting-edge inspection technology and a team of skilled technicians dedicated to ensuring the integrity and perfection of every glass product that leaves our factory floor.

With a focus on precision and attention to detail, we strive to exceed industry standards and deliver glass solutions that consistently meet and surpass customer expectations. Contact us today to learn more about our capabilities and how we can fulfill your glass manufacturing needs with uncompromising quality and reliability.

6. Packing

After rigorous inspection and quality assurance procedures, our glass products are carefully packed for safe transit. At Roetell Glass, we prioritize secure packaging to protect your investment and maintain product integrity. Our expert packing team utilizes industry-leading materials and techniques to prevent breakage and scratches during shipping. Trust us to deliver your glass products in pristine condition, ready to impress. Contact us today for superior packing solutions.

As we delve into the intricacies of glass manufacturing, there’s a unique opportunity to witness the artistry that goes into crafting each bottle. We invite you to take a captivating journey behind the scenes, where tradition converges with cutting-edge technology to create the foundation of our renowned glass bottles.

In this immersive video, we unveil the meticulous steps involved in the production process at Roetell Glass. From the careful selection of raw materials to the transformative dance of molten glass and the precision of mold design, every frame encapsulates the dedication and skill that define our craft.

Prepare to witness the birth of glass bottles, where passion meets precision, and each bottle becomes a canvas for your brand’s identity.
For a clearer understanding, be sure to check out the video.

Reliable Glass Bottles, Jars, Containers Manufacturer | Roetell