Glass Molding Companies and Services

IQS Directory provides a comprehensive list of glass molding companies. Use our website to review and source top glass molding companies with rollover ads and detailed product descriptions. Find glass molding companies that can design, engineer, and manufacture glass molding to your companies specifications. Then contact the glass molding companies through our quick and easy request for quote form. Website links, company profile, locations, phone, product videos and product information is provided for each company. Access customer reviews and keep up to date with product new articles. Whether you are looking for companies of glass tubes, optical glass, or mirrors, this is the resource for you.

  • New Haven, IN

    We make it our goal to offer the top glass cutting services in the industry. Although we started small when we were founded in 1950, we have grown every year and are now one of the largest glass suppliers in the industry. We make products for more than just the optical industry, and can make customized products to suit any need. Contact us for a quote today!

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  • Cambridge, ON

    Glass cutting is a varied industry, and we have done it all for the past 50 years. We believe in manufacturing high quality glass products that will exceed customer expectations every time. Our goal and mission has always been to ensure our customers are satisfied and will come to us with all of their glass needs. Contact us to learn more today!

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  • Painesville Township, OH

    Founded in 1990, Technical Glass Products is a fabricator of Fused Quartz Glassware. We maintain a broad inventory of labware, flat stock, rod and tubes in addition to providing custom fabrication using state of the art equipment to suit your needs. Our commitment to excellence has resulted in TGP becoming America’s fastest growing supplier of stock shapes and fabricated products in the industry.

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  • Williamsburg, VA

    Coresix Precision Glass, Inc. is a fully integrated technical glass manufacturer specializing in high quality glass of all types. We are supported by a modern and fully integrated grinding department that can offer quality and cost effective manufacturing and fast delivery. Call us today for more information!

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Glass Molding Industry Information

Glass Molding

Glass molding, also known as precision glass pressing, is used for the manufacture of lenses for cameras and glasses. Designed as a replicative process, glass molding uses blanks to produce flawless glass products in pressurized molds. The blanks, or floated glass, are reshaped and configured by being pressed between the side of a mold.

Quick links to Glass Molding Information

Process of Glass Molding

Floating produces blanks of uniform thickness with a flat clean surface, an essential part of glass molding. To create a blank, hot molten glass is poured over molten tin or lead and allowed to slowly cool to achieve the appropriate thickness. Glass molding involves multiple steps using technical equipment that monitors and controls each aspect of the process. In the glass industry, it is considered to be a very efficient and cost-effective way to produce high quality products that require minimal labor or finishing. The various precision details of each step guarantee its success.

The first step of glass molding is the insertion of a blank into the bottom of a precast mold. For the best results, the blank should be smooth and clean. As an extra precaution, the mold should be inspected for any miscellaneous materials as well. Small minute imperfections or bits of foreign matter can ruin the process. With the blank and bottom of the mold properly set, the top of the mold is placed closely over the bottom of the mold and the blank without touching either of them. Once all three pieces are in place, they are heated. As the temperature rises, the blank will become pliable enough to be shaped and cast. To ensure the successful completion of the process, the heating must be carefully monitored so that the blank reaches the proper softening point without being overheated.

At the malleable temperature, the upper portion of the mold is slowly lowered onto the blank and bottom of the mold. As it moves downward, the blank is very slowly pressed against the bottom of the mold by the top to achieve the proper thickness and shape. The downward movement ceases when the correct thickness is achieved. The new part and mold are set aside to cool until the part can be safely removed. The cooling time will vary depending on the type of part and the requirements established for the production process.

Benefits of Glass Molding

Glass molding relies on the use of specially designed molds that are durable enough to withstand the controlled temperatures and pressure of the molding process. Flawless blanks ensure that the final product will meet the highest standards. Additionally, most glass molding is done with borosilicate or soda lime glass, which produce high quality low-cost products. Lastly, glass molding production happens quickly and efficiently since the product does not require polishing or buffing. Once a part is removed from the mold, it can be easily coated or finished, which adds to the efficiency of the process.