With its patented technology, the PopSeal® top reseals & reopens; no more throwing away flat drinks. Save them for later! AND no more insects!


Spill Proof

Accidents happen. With PopSeal®, spills do not. No more messes, no more waste, no more drink loss. Spill less. Save more.


No More Tabs

Broken fingernails. Choking hazards. Additonal litter. Tabs are now a function of the past.


Less Aluminum

One of the heaviest components of an aluminum can is the tab. Without a tab, PopSeal® significantly reduces the overall weight of the can. With over 475 BILLION cans manufactured globally, the savings would be significant.


No Disruption

PopSeal® can be manufactured on equipment similar to that used for current production and uses less energy to manufacture. PopSeal® can tops have the same profile & dimensions as current can tops so there is no change in packing, shipping & delivery (including vending machines). Further, with no tab on the PopSeal®, the most intensive process of manufacturing is now eliminated; saving time and money.


Reduce Reuse Recycle

Recycling aluminum is a very efficient process and only requires 5% as much energy as creating a new can. With the consumer benefits of PopSeal®, we aim to increase aluminum preference over plastic & glass, and effectively reduce the carbon footprint of the manufacturing process left by the beverage industry.

How It Works



Hold the can in one hand and using the heel of the palm of your other hand, lightly strike the center of the domed can top. This motion will crack the seal of the opening. It’s that easy!

Self Closing (spill proof)

After opening, the internal domed oval opening cover will instantly return to its closed position as a liquid tight seal (spill proof). This seal will still pass just enough carbonation gas to prevent it from automatically resealing to a gas-tight state.

Drinking (from self closed)

A featherweight spring closes the domed oval opening cover. Each time you take a sip, the can opens by the light touch of your lip. Once you remove your lip, the can re-closes thus no accidents or insects in your can!

Toggle Open (drinking glass experience)

For those who prefer to have their can remain open, simply use your fingertip to lightly push the domed opening cover down a little further past the point where your upper lip can push it, and the opening cover will hit a soft stop so that it will not return to the self closing mode. This will allow drinking from the can just as one experiences it with today’s current tab can top.

Self Resealing (preserve the carbonation)

To save the carbonation of an unfinished beverage, the can must be in the self closed position. Simply turn the can upside-down, knock it over, or even shake it. This will create excess carbonation gas which will force the self-closed seal into its gas tight mode. Reopen just as you would if you were opening it for the first time.

Bartender Mode

In the food & beverage industry, it is often illegal to serve an alcoholic beverage in any container that is sealed or that can be resealed. Bartenders can push the domed opening cover all the way back into contact with the internal can body, disabling the feather weight spring and locking it into a permanently locked-open configuration.

Beverage Industry


In 1959, the first aluminum can was brought to the marketplace, replacing its steel predecessor and introducing to beverage consumers across the world a can that was lighter in weight, resistant to corrosion and supported a higher weight of carbonation pressure. Over the next 60 years, impactful changes were made to the aluminum can (per

  • 1959: Coors introduced the first seamless all-aluminum can into the beverage market – holds 7 oz. of beer
  • 1964: First 12-oz. all-aluminum can introduced by a major soft drink company—Royal Crown Cola
  • 1967: First use of aluminum cans by nation’s largest soft drink producers—Coca-Cola and PepsiCo
  • 1968: Light, high-strength cans introduced, reducing weight per 1,000 cans by 13.5 percent
  • 1975: Stay-on-Tab patented and introduced, increasing user convenience and contributing to reduction of pulltab litter
  • 1977: Mini stay-on tabs introduced. Weight per 1,000 cans reduced an additional 3.5 percent
  • 1979: Double-necked cans introduced
  • 1984: Quart can introduced
  • 1985: Aluminum becomes most popular beverage package
  • 2000: Bottle Can introduced by Daiwa Can Company
  • 2001: SuperEnd launched in the U.S. by Crown Cork & Seal
  • 2011: Craft brewers adopt the aluminum can en masse to mass production

Why Aluminum?

Discovered in the 1820’s, aluminum is the most abundant metal on earth and one of the easiest consumer materials to recycle. Nearly two-thirds of the aluminum globally produced is still in use today. Some other facts about aluminum:

  • According to the EPA, 50.7 percent of aluminum cans were recycled in 2009
  • A used aluminum can is recycled and back on the grocery shelf as a
    new can in as little as 60 days
  • Every minute, an average of 113,204 aluminum cans are recycled
  • Making new aluminum cans from used cans takes 95 percent less energy
    than using virgin materials
  • Twenty recycled cans can be made with the energy needed to produce
    one can using virgin ore
  • Recycling one aluminum can saves enough energy to keep a 100-watt bulb
    burning for almost four hours or run your television for three hours
  • Tossing away an aluminum can wastes as much energy as pouring out half
    of that can’s volume of gasoline

In 1972, 1 pound of aluminum cans was equivalent to about 22 empty cans. Due to advanced technology using less material and increasing the durability of aluminum cans, as of 2002, 1 pound of aluminum cans is equivalent to about 34 empty cans.  The tab makes up a significant part of a can’s overall weight. With PopSeal®, there is no tab, significantly reducing the overall weight of the can and effectively making
1 pound of aluminum go a lot further compared to the cans in current production.

In an industry that produces over 475 billion cans worldwide, those are mind-boggling savings that ultimately conserves global energy and reduces our carbon footprint across the Earth.

Popseal History

  • Proof of concept established with six iterations
    of plastic can tops
  • Completed plan for aluminum prototyping
  • Partnered with NC State University’s Integrated Manufacturing Systems Engineering Institute to analyze Prototyping Plan
  • PopSeal® and NCSU’s Integrated Manufacturing Systems Engineering Institute confirm die progression plan through three dimensional modeling
  • Superior Tool finished machining the first die for the aluminum prototype
  • Preliminary marketing meetings were held
  • Engineering project with NC State University to test manufacturing
    parameters began
  • 19 new innovative potentially patentable developments documented
  • Several iterations of die design and aluminum trials continue to define manufacturing parameters
  • Industry discussions expanded to include beverage companies, can manufacturers, and aluminum suppliers
  • The first PopSeal® patent was granted
  • A Continuation in Part patent filing was made covering several subsequent inventions
  • A Patent Cooperation Treaty (PCT) application was filed
  • NC State University completed project on manufacturing parameters
  • A Design Patent was filed
  • Two provisional technology patents were filed
  • Agreement was signed with a can manufacturer to work together to better understand needs and engineer a manufacturing process
  • Second PopSeal® technology patent was granted
  • Focus group tested PopSeal® demonstration cans. Reaction was: clean aesthetics, re-sealable aspect appealing, natural to drink from
  • Volume manufacturing approaches were defined andsupporting technology was developed
  • Two additional technology patents were filed
  • Graphic use of the PopSeal® top was developed to enhance the marketing value
  • A second Patent Cooperation Treaty (international) filing was prepared

 Our Team

MikeGrissomMike GrissomPOPSEAL® INVENTOR 

Mike has four previous inventions that have been patented and is the inventor of the PopSeal® technology. He has held the following positions prior to : Founder of Industrial Coating Machine, a privately held company developing silicone dusting machines for the rubber extrusion industry; President/Inventor of Grissom International, a privately held company developing, marketing, mass producing, and selling the Rockabsorber self-stabilizing foot for various applications; National Tech Support/Pilot/Inventor of Memorex/Telex (formerly Raytheon). He studied industrial engineering at Ohio State University and left in his senior year to become a pilot technician at Raytheon.


How does the PopSeal® technology help the environment?

By eliminating the tab, the PopSeal® technology reduces the amount of aluminum used in each can. With over 475 billion cans used each year, that is a significant savings. And PopSeal® technology is the only re-closable can top that is 100% recyclable.

Will the can cost more to manufacture?

PopSeal® technology eliminates the tab, a difficult part of the manufacturing process. It uses less aluminum and is manufactured on similar equipment to that currently being used by the industry. Cans with PopSeal® tops are expected to cost less to manufacture than current cans.

What other resealable can tops are currently available?

There is a top made with a sliding plastic insert that has been tried and marketed with little success. It is neither self closing, nor is it recyclable until the plastic insert is removed. It is not used currently in the US.

Will my lip touch the top when I drink?

The lip of anyone drinking from any can does touch the can. This will not change. The PopSeal® top can be pushed to a stay open position if desired. A slight tap will restore it to the always closed position.

Is the technology patent protected?

PopSeal® technology is protected by an issued patent and four additional patents pending.

What kind of beverages will use this technology?

When the current Tab technology was introduced in 1975, it first appeared on beer cans. However, by 1977 virtually all beverage companies were introducing cans with this technology. We expect PopSeal® technology to be attractive to all beverage companies.