How to Clean a Display Case

Types of Display Cases

There are two main types of display case materials: acrylic and glass. You may already know what type of display case you have. If you're not sure, here's how to tell the difference:

Acrylic/Plexiglass

You may have heard the terms Plexiglas, plexiglass, and acrylic plastic to describe case panels. They all refer to the same thing — a clear material that was accidentally discovered way back in 1933. Eventually, the trademarked name Plexiglas morphed into the generic terms "plexiglass" and "acrylic." It's a strong, flexible, lightweight plastic used in everything from airplane windows to display cases. It's easier to work with and safer than glass, plus it's more flexible and can withstand more strain. However, it's softer than glass and tends to be more prone to scratching.

You can tell a panel is acrylic with two simple tests. Tap it gently with a coin. If it makes a dull click, it's likely acrylic. Feel the surface with your hand. If it feels close to room temperature, rather than cold, it's probably acrylic.

Glass

Glass has been around for centuries, though modern techniques have made it far stronger and clearer. It's mainly a mixture of sand, soda ash, and limestone that's superheated and then quickly cooled. The end product is a stone-like, hard material. It's cheaper than plastics and easier to recycle. On the other hand, it weighs roughly twice as much as acrylic, and it's harder to cut, shape, and finish.

If you tap a glass panel with a coin, it's likely to make a sharp, high-pitched click. Glass will also feel much colder than room temperature when touched.

Choosing the Right Products

To clean a display case properly, first determine whether it's made from glass or acrylic. Each material responds best to specific cleaning products.

Recommended cleaning products

For plexiglass/acrylic panels, NOVUS offers a cleaning system consisting of three bottles and two microfiber cloths. Bottle one is the NOVUS No.1 Plastic Clean and Shine, a cleaner that's also anti-fog, anti-static, and dust repellent. (It’s safe for glass, too.)

The No.2 Fine Scratch Remover can be applied to uncoated plastic for quick removal of light surface damage. The No.3 Heavy Scratch Remover targets heavier abrasions and scratches. It's designed to be used if the first two products don't remove the surface damage.

For glass panels, start with a microfiber cloth. It might be all you need to touch up surfaces. Add a quality ammonia-free cleaner to leave surfaces sparkling and clear. The NOVUS No.1 cleaner works to remove surface grime from glass.

Cleaning products to avoid

• Avoid using paper towels for cleaning glass and plastic. Paper towels often have chemicals added to increase their absorption, which tends to leave a milky film after time. They also can easily scratch plastic and glass surfaces.
• Don't use products containing ammonia or bleach. Ammonia is harsh, and on plastic it can cause yellowing or degradation. Bleach may discolor and even weaken materials.
• Never use abrasive cleaners, steel wool, or scrubbing pads on glass or plastic. They'll scratch surfaces, leave permanent damage, and make surfaces more prone to collecting dirt and grime.
• "Homemade" glass cleaner formulas containing vinegar and soap are fine for glass, but may damage plastic surfaces. Use a quality plastic cleaner for acrylic, like the NOVUS line, to protect your investment.
• Some commercial window cleaners contain a wax additive to leave an extra-shiny finish on glass. That's fine for glass, but on plastic the residue can produce a dull or greasy effect. Use wax-free formulations to avoid trouble.

Cleaning Tips and Techniques

Cleaning with a microfiber cloth is a good way to start. Microfiber often removes dust and fingerprints without the need for cleaning chemicals.

A feather (or microfiber) duster is a great way to maintain display cases. It lets you reach interior surfaces to easily remove dust lurking inside cabinets and in corners.

When cleaning areas where overspray might damage products, spray cleaning solutions on the microfiber cloth first, then wipe down surfaces.

Glass and plastic both benefit from buffing with a dry microfiber cloth after cleaning solutions evaporate. Although glass buffing with polishing compounds is possible, it's a complex operation. Plastic surfaces, however, can easily be buffed to a high luster with systems like the NOVUS line.

If wiping with disinfectant is required, take care. Prolonged exposure to some disinfectants can cause hazing and cracks. For plastics, avoid disinfectants containing bleach or hypochlorite. No matter what's used, after the prescribed disinfecting time, follow up with a microfiber wipe-down to reduce residue and streaks.

If you're concerned about chemicals and possible damage, you can always wipe with pure water and a microfiber cloth. It's a safe option for any plastic or glass display. Make sure to use distilled water, though, to avoid mineral spotting when the water dries. If you have remaining grime, then use a stronger, proper cleaning solution.

If you reuse microfiber cleaning cloths by laundering them, take care.

• Never add fabric softener to the washer or use fabric softener sheets in the dryer. Fabric softener causes streaks when laundered materials are later used for cleaning.
• Air dry or tumble dry microfiber at a dryer's lowest heat setting — high heat destroys the fine fibers.
• Launder your microfiber cloths separate from other cleaning cloths or clothing. Microfiber does its job well — it will collect lint from anything it's laundered with.

Proper Cleaning Pays Dividends

Regular dusting and cleaning helps preserve the appearance and integrity of display cabinets. Properly maintaining them also protects surfaces for the future. Dirt and grime can be removed before they cause scratches. Plus, plastic surfaces are easier to maintain when fine scratches are polished out before they get bigger. A little care now goes a long way toward preventing further problems.

Displays2go offers several great products for cleaning and polishing your display cabinets. With the right cleaning, your display can stay crystal clear and provide an attractive product showcase for many years.