sandblasting tempered glass Archives - Bear Glass Blog

Glass Tempering By Bear Glass

bearglassblog — Thu, 26 Mar 2026 19:49:00 +0000

Overview of Tempered Glass:

Tempered glass is made using special heated furnaces, which heat the annealed glass to a uniform temperature of approximately 700ºC. When the glass exits the furnace, it is rapidly cooled. This rapid cooling puts the glass surface into a state of compression while the centre core remains in tension.

THERMAL TEMPERING

Tempering Process:
Tempered glass is made by uniformly heating annealed glass to a temperature of up to 700°C and immediately cooling it. The glass first goes through the furnace, carried in by rollers, where it is heated using three modes – conduction, convection and radiation. The rollers conduct the heat, while the coils help in the radiation of heat. The convection effect is brought about by hot air blowing through the nozzles, thus circulating the heat inside the furnace and making sure that the glass is heated evenly on all sides. This super heated glass then undergoes a rapid cooling process by a uniform and simultaneous blast of air on both surfaces.

After tempering, the stress pattern developed by the glass is high, and the mechanical strength of tempered glass is four to five times higher than that of annealed glass.

Mechanical Strength of Tempered Glass = 4 x Mechanical strength of Annealed Glass

When tempered glass is broken, all the stored energy is released at once and the glass breaks into small pieces.

Characteristics of Tempered glass:

Tempered glass is four to five times stronger than annealed glass of the same size and thickness against impact.

Tempered glass has higher thermal strength, and it can withstand high temperature changes up to 250°C.

Tempered glass is considered as safety glass. It is difficult to break and even in the event of a breakage, disintegrates into small relatively harmless globules.

Tempering does not alter the basic characteristics of glass such as light transmission and solar radiant heat properties of normal glass.

The glass surface after heat treatment has the same resistance to surface damage as annealed glass.

Tempered glass cannot be cut or altered.

One problem that can also exist with tempered glass is spontaneous breakage, where the glass can break for no apparent reason. Spontaneous breakage occurs when nickel sulphide stones increase in size due to repeated heating and cooling.

Properties of Tempered Glass:

Properties	Tempered Glass
Thermal Shock Resistance	Up to 250°C
Mechanical Strength	Four to five times stronger than annealed glass
Tensile Strength	65 MPa
Bending Strength	120-200 N/mm2
Surface Compression	> 95 MPa
Design Stress for Architectural Purposes	50 MPa
Fragmentation	Small round crystals
Conducive for Processing	Cannot be cut after Tempering

Need for Tempered Glass:
Tempering increases tensile strength, thermal shock resistance, and safety of normal glass. It also increases its heat withstanding capacity. Because of these properties, tempered glass is preferred in applications where strength, safety and thermal resistance are important considerations.

Strength & Safety Considerations
- Four to five times stronger than annealed glass
- Two to three times stronger than heat strengthened glass
- Fragments into small, relatively harmless pieces, reducing the likelihood of injury.

Heat resistance
- Withstands both uneven heating and high temperatures due to its superior edge strength compared to normal annealed glass. Because of its high edge strength tempered glass is used in spider and point fixed glazing.

Thermal Breakage:
Uneven heating due to direct sunlight makes glass expand and contract at different rates. This difference in the rates of expansion (central part of glass) and contraction (edges of glass) create stresses in glass which may lead to breakage. When temperature difference is below 32°C, the risk of thermal breakage is low, but when the difference becomes more than this, the risk increases significantly.

Thermal breakage starts at the edge and is perpendicular to the glass edge. Breakage may be single or multiple depending on the built up stress. Several cracks indicate high thermal stresses across the glass pane. A fully tempered glass has significantly higher edge strength to withstand chances of thermal breakage.

Application of Tempered Glass:

Tempered glass is specifically designed for use in areas where there is a high risk of contact and breakage. It is not harder or softer than annealed glass but is tougher. Tempering does not make glass more porous nor is tempered glass more prone to scratches than normal glass. Tempered glass offers a wide variety of uses in industries including building, manufacturing, automotive, to name a few.

There is a wide scope for the use of tempered glass in the building industry. It can be used to raise the elemental beauty of exteriors and interiors by using it on facades, showroom shelves, dividers, shower cabins, doors and the like.

High resistance to thermal stress and small missile impact makes tempered glass an ideal choice for sloped glazing.

The manufacturing industry uses tempered glass in ovens, refrigerators, fireplace screens, and shelves.

In the motor vehicle industry, tempered glass is commonly used inside and rear windows.

To know more about this glass product, contact Bear Glass now!

The post Glass Tempering By Bear Glass appeared first on Bear Glass Blog.

Bear Glass New Jersey Does Custom Cut Mirrors, Vanity Mirrors & Custom-Cut Tabletops, Vanity Tops

bearglassblog — Fri, 08 Feb 2013 20:04:29 +0000

Custom-Cut Mirrors and Vanity Mirrors

IF YOU CAN DREAM IT WE CAN DO IT!

Bear Glass offers mirrors for your specific wants and needs. We know a new, custom mirror will enhance the beauty of your home or unit immediately. Bear Glass only uses the highest grades and the clearest mirrors made in the industry, and we guarantee the quality of every piece of mirror we sell. We will custom fit vanity tops and even cut holes for electrical outlets, switches, wall lights and sconces. Our skilled technicians at Bear Glass will ensure a professional installation every time.

Whether you need a dressing mirror, vanity mirror, or an entire wall of mirrors, the mirror specialists at Bear Glass can help you with any size project.

Mirrors can be used to make a room more elegant or appear much larger.

THERE ARE NO LIMITS TO WHAT WE CAN DO WITH VANITY MIRRORS!

Our “attention to detail” is one reason why Homeowners, Architects, and Designers have come to rely on Bear Glass. We pride ourselves in taking time to consult and design a unique mirror application for each and every client. Creative designs allow mirrors to be installed in any location throughout your home.

Bear Glass works with Business and Building Owners, Architects, Designers, Contractors, and Property Management Companies. Whether you need to replace a restroom mirror or need a complete wall of mirrors, the mirror specialists at Bear Glass have the knowledge and experience to complete any size project. Bear Glass has a large inventory of mirror and the ability to fabricate mirrors to most any size. Bear Glass uses only the highest quality products to ensure your complete satisfaction.

Department Stores
Restaurants and Night Clubs
Salons and Spas
Fitness Centers
Aerobic and Yoga Studios
Dance Studios
Hospitality
Restrooms
Dressing Rooms
Elevators

Custom-Cut Tabletops and Vanity Tops

PROTECT YOUR VALUABLE TABLE WITH GLASS!

Bear Glass can provide you with glass for any surface. Protect your valuable dining table or desk with a custom-cut glass top. We can even help you turn your favorite stand into a nice table with a custom-sized piece of glass. Bear Glass will fabricate glass to fit your specific size and need, ensuring a perfect fit. We offer different types of glass and different thicknesses, as well as edge work to match your style and décor. Bear Glass can also replace your patio-table glass with custom-sized safety glass.

Glass Tabletops are a great way to protect those fine wood surfaces, while allowing the beauty of the wood to be seen. Glass tabletops are often associated with a classy formal dining room table, but glass tabletops have many applications.

Whether you need a glass tabletop, glass countertop, or glass shelves for your home, the professionals at Bear Glass New Jersey can help from design to delivery. We will show you the different shapes and sizes, thicknesses, and glass types that are available. Nothing adds beauty like a sparkling glass tabletop.

Residential Glass Tabletops

Glass Countertops
Home Office Desks
Bedroom Night Stands
Kitchen Tables
Coffee Tables
Dining Room Tables
Patio Tables

Bear Glass offers glass tabletops with various edge treatments, including Flat Polish, Pencil Polish, Beveled edge, Ogee Edge, and Wave Edge. Each edge can perfectly accent the décor of your home and the professionals at Bear Glass can show you the different edge treatments available.

Residential Glass Tabletops

1/4″ to 1″ Thick glass
Variety of Colors
Variety of Edge Treatments
Custom Shapes and Sizes
Custom Fabrication
Expert Installation

For more information on Bear Glass and Custom-Cut Mirrors, Vanity Mirrors, Custom-Cut Tabletops and Vanity Tops please contact Bear Glass at:

FACTORY/ OFFICE

Address:

Bear Glass Inc.

399 20th Street

Brooklyn, NY 11215

Phone: 718-832-3604

Fax: 718-832-0786

E-mail: bearglass@yahoo.com

If you are in New Jersey:

Bear Glass New Jersey

359 Essex Road

Tinton Falls New Jersey 07753

P: 732 901 2626

F: 732 901 2266

E: Sales@BearGlassNJ.com

The post Bear Glass New Jersey Does Custom Cut Mirrors, Vanity Mirrors & Custom-Cut Tabletops, Vanity Tops appeared first on Bear Glass Blog.

ClearShield Glass Protection by Bear Glass

bearglassblog — Wed, 14 Mar 2012 14:18:43 +0000

The idea of ClearShield began in 1982, in London. ClearShield is a new technology that is used for glass surface protection. This technology was actually introduced to the marine industry as the marines got to work with harsh environments. Presently the upgraded technology of ClearShield is also used in commercial and residential glass and window applications.

ClearShield system helps to protect your glass surface. Metal rust, water spots make your glass surface hasty and unclear. Mostly the window glasses and shower doors suffer from such problems as they remain exposed to water or the environment. ClearShield helps save glass surfaces from any kind of stain or watermark and make it look like the new.

Bear Glass is a fourth generation glass and mirror company and has proven its expertise in all kinds of glass work. Bear Glass promotes the usage of ClearShield technology when purchasing products that may be susceptible to water damage overtime so that it can be ensured that the glass lasts longer no matter where it is placed, be it a window glass or a shower door, ClearShield we feel is your answer .

Protection with ClearShield is the ideal solution for sandblasted and acid-etched glass as it resists fingerprinting and staining, while maintaining the beautiful appearance of decorative glass.

Now if you are wondering about how ClearShield works on your sandblasted items, ClearShield creates a cover or protection on the glass surface that prevents other hazardous materials from damaging the glass. The polymeric resin provides the protection for the glass from any kind of chemical reaction and helps to keep it clean.

Bear Glass uses ClearShield technology for their glass products. Shower doors by Bear Glass or window glass by Bear Glass can be protected by ClearShield glass protection. Before delivering, these products are always been tested by experts to know whether these products are going to give you the best what Bear Glass always promises to you.

ClearShield technology does not only prevent your bathroom shower glass or windows from getting stained with water-marks or rusts, but it also enriches the strength of the glass for long periods of time. ClearShield coats over glass ensure a clean view through the glass, along with the environmental hygiene inside the room as the cover does not let the germs in or the bacterium grow on the glass surface.

Bear Glass recommends the advanced ClearShield technology for glass so that you can expect the best effect e when you order your glass products products from Bear Glass.

Bear Glass is always here to help you with all your glass and mirror needs. We do everything on glass.

Bear Glass ships all kinds of glass products nation-wide. For more information or to order your glass product, please contact Bear Glass at:

FACTORY/ OFFICE

Address:

Bear Glass Inc.

399 20^th Street

Brooklyn , NY 11215

Phone: 718-832-3604

Fax: 718-832-0786

E-mail: bearglass@yahoo.com

The post ClearShield Glass Protection by Bear Glass appeared first on Bear Glass Blog.

NEW YORK GLASS TEMPERING

bearglassblog — Fri, 24 Feb 2012 15:48:15 +0000

Tempered glass or toughened glass is one of two kinds of safety glass which is physically and thermally stronger than regular glass. It is safer than the regular glasses and has a massive use where standard glasses can pose a potential danger.

Tempered glass is manufactured through a process of extreme heating and rapid cooling, which actually makes the glass harder than regular glasses. Tempered glass breaks in a unique way. If any part of the glass fails, the whole panel shatters at once. And it shatters into small oval-shaped pebbles when broken, eliminating the danger of sharp edges. Therefore it is often referred to as safety glass.

Bear Glass is a third generation glass company and has proven its expertise in all kind of glass works. Bear Glass recommends tempered glass for low level fire safety. The greater contraction of the inner layer during manufacturing induces surface stresses of the glass, and that helps tempered glass to break into small pieces, rather than breaking into dangerous sharp-shards, reducing the chance of severe damages.

The manufacturing process makes tempered glass heat resistant also. Hence it is used as heat protector along with the carafes in automatic coffee makers or the windows in ovens. Tempered glass is also used to make computer screens, skylights, door windows, tub enclosures. Tempered glass shower doors are also a big hit now-a-days.

Tempered glass has massive usage for automobiles. Laminated glass is used as windshield when tempered glass is used for door-windows and as rear window so that if the glasses break, the driver or passengers remain unhurt.

Tempered glass by Bear Glass has massive use in home-furniture designing as well as in office buildings. Tempered glass table-tops or curved glass tables by tempered glass can give your office or household a different look as well as safety for all that come in contact with the glass.

Also using tempered cabinet glass, tempered glass table tops, or glass tables that are tempered by Bear Glass can show you a new path if you like the idea of modernization for your household or office place. Tempered glass wall, tempered glass front doors, tempered glass window or other tempered glass products by Bear Glass can assure you also of a completely safe and clean finish.

Bear Glass can help you choose your tempered glass product needs to best fit for your project and by the way, we ship tempered glass worldwide.

For more information or to order your tempered glass products, please contact Bear Glass at:

Factory / Office

Address:

Bear Glass Inc.

399 20^th Street

Brooklyn, NY 11215

Phone: 718-832-3604

Fax: 718-832-0786

E-mail: bearglass@yahoo.com

The post NEW YORK GLASS TEMPERING appeared first on Bear Glass Blog.

What Is Sandblasted Glass?

bearglassblog — Tue, 27 Dec 2011 00:31:31 +0000

Sandblasting glass is becoming a very popular method of etching glass nowadays. Sandblasting is the act of propelling very fine bits of material at high-velocity so that it can clean a surface or etch a surface. Sandblasting glass can result most elusive art work on glass.

Bear Glass provides the best service in Sandblasting glass. With modern sandblasting glass equipment, Bear Glass can provide the best art and craft-work of Sandblasted glass.

In the process of preparing Sandblasted glass there are two techniques to be followed, glass-etching and glass-carving. Glass-etching is when abrasive is blasted on the glass lightly to give it a frosty appearance. On the other hand, Carving is when steadily sandblasting is done to the surface of a glass using stencil which protects the areas those are opted not to be carved out. The technique of sandblasting for carving a glass can be much nuanced with differing depths and angels of cuts creating an array of lighting effects which is really beautiful.

Sandblasted glass can change your idea of designing. Usage of glass indeed makes things look more attractive, and sandblasting glass can join another positive point in there if you fascinate beauty.

Sandblasting glass have massive usage to enhance the overall look of offices, variety stores or designer show-rooms, or you can even use it to give your home a modern and sophisticated look. The etchings on glass due to the process of sandblasting make wonderful details to the front doors or kitchen cabinets.

The frosted appearance or different textures of sandblasted glass give glasses a very different look which does not allow them getting smudged by repeated touching. Sandblasting glass can provide you various designs that you never expected possible on a glass surface.

Sandblasting glass can create an elegant art-work. A good number of modern artists have tried their elegant pieces of art-work by using sandblasted glass.

Changing design would not only make your workplace or living-place look better, but it would help to change your normal mood to a charming one as well also. We have used sandblasted glass in our office which has dramatically affected the mood of our senior staff.

Bear Glass has proved its expertise on all facets of glass for more than 30 years. Artwork that can change the view of your office or can make your home or apartment more beautiful. With the help of modern sandblasting equipment, Bear Glass can impress with rare but elegant pieces of craftsmanship by sandblasting glass.

Bear Glass can help you design your sandblasted glass needs to best fit for your project . We ship sandblasted glass worldwide.

For more information or to order your sandblasted glass products, please contact Bear Glass at: