Over the past year I have developed an interest in thermoforming plastic
and have come to appreciate the versatility of the products that can be made. I’ve seen the process from research and
development to production and marketing.
Thermoforming is a manufacturing process where a plastic sheet is
heated to a pliable forming temperature, formed to a specific shape in a mold, and trimmed to create a usable
product. The sheet, or "film" when referring to thinner gauges and
certain material types, is heated in an oven to a high-enough temperature that
it can be stretched into or onto a mold and cooled to a finished shape."
It is a relatively new concept that has had many applications. Many of products
on the current market are made through thermoforming. Common examples are
tables, sheds, chairs, and playground equipment.[i]
Mike
Todd first introduced me to
Thermoforming. Mike has been good friend of my father for many years. He works at Life-Time, a manufacturing plant, where he takes part in
the entire thermoforming process. I’ve
come to realize he has a special talent and a very creative mind. As he
has come to understand the thermoforming process, and has been able to utilize
it in his personal endeavors.
With Mike’s
innovation, my father’s business experience, and my cheap labor, we have
created a business called Terrarium Art. We specialize in creating a
unique collection of terrarium and vivarium tanks using plastic that has been thermoformed.
Although we are still in the early stages of the business, we can see
great potential in the products we make. We have already gone to various shows
to display our products and they have received great reception and
interest. One buyer even posted images of a tank on his blog. The Infinity Tank, the name of our vivarium, utilizes basic scientific
methods, by having air
vents at the top and bottom of the
tank. This allows constant airflow; basically causing a stovetop
effect. This also allows you to have a clear lens without condensation buildup.
The lens of the tank is made from polycarbonate; the same material bulletproof
glass is made from. The tanks are lightweight, specially designed for
smaller reptiles, and they look sharp. It also has a built-in waterfall creating
a mechanical and biologic filtration system that helps maintain a clean tank.
It also includes easy access to the pump and has a port in the back to drain
the water. After creating the basic plastic shell, we utilize other
materials to design the cages. We have designed very realistic desert,
tropical, and cave-like terrariums to fit whichever animal you wish to
display.
Over a decade ago my
father began a similar business mainly specializing in terrarium décor.
He focused on making water dishes and other naturalistic decorative items that enhance tanks. Instead of using plastics
he used cement for all of his products. He was very successful in his
business until competition became overwhelming. Similar products could be mass
produced in China
and sold for less, so his business ceased to exist.
The initial impetus
for these endeavors has been my father’s interest in animals. I have grown up
with a wide variety of animals and I was the only kid in the neighborhood to
have a zoo in his own backyard. Some of the animals we have had over the
years include: bobcats, bengalcats, falcons, snakes, spiders, lizards,
chickens, pigeons, quail, rabbits, mice, rats, ferrets, and dogs. You can
imagine with that kind of collection the chores that had to be done. Even
though others thought us odd, collecting animals as a hobby has had many
advantages, including the people that we meet.
My father’s interest in animals led him to meet Mike Todd.
Mike and my father
are both falconers. It has always been and always will be their
hobby. From that point on we came to see how smart and resourceful Mike really
is. Before we resurrected Terrarium Art, Mike and
my Father created a business called High Tech Falconry. They created and sold falconry supplies, which were made from
thermoformed plastic. Mike’s genius created hoods, hood holders, perches,
wall perches, bathing pools and much more. It was successful for several
years, but as time has drawn out, it has become dormant with a few items being
sold each year. The market for falconry supplies isn’t exactly booming.
Thermoforming has so
many different applications that can be utilized if one is innovative and makes
that idea a reality. For that reason, I have become fascinated with its
process. We have created a unique business like no other.
“Thermoforming is
considered as one of the oldest methods of forming useful articles of plastic.”[i] It was first practiced, in some form, dating
back to ancient time. Some of the first
recorded findings of thermoformed materials were found in common food
containers and utensils. Egyptians,
Micronesians, Ancient Americans, and Romans used tortoise
shells, (made of keratin),
and tree bark (natural cellulosic)
to form bowls and canoes. The materials
were heated it in hot oil or water and then re-shaped.[ii]
The
next great advance in history occurred in the 19th Century with the creation
of celluloid. “Celluloid
is the name of a class of compounds
created from nitrocellulose and camphor,
plus dyes and other agents. Generally regarded to be the first thermoplastic…The
first celluloid as a bulk material for forming objects, were made in 1855 in Birmingham,
England, by Alexander Parkes.
Parkes patented
his discovery after realizing a solid residue remained after evaporation of the
solvent from photographic collodion.”[iii] Collodion is a flammable, syrup like
solution of nitrocellulose in a mixture of alcohol.
Progress
continued following Parkes discovery. “In the 1870’s John Westley Hyatt, considered the father of
modern plastics processing, and his mechanical engineering colleague Charles
Burroughs, rolled thin, skived sheets of celluloid or cellulose nitrate into
tubes, inserted the tubes into steel molds that contained the desired shapes,
and heated the sheets with steam under pressure. The steam softened the celluloid sheets and
forced it against the mold shapes. The
molds were then cooled in water, rigidifying the plastic. The molds were opened and the parts trimmed
to size.
The main products
they had created from plastic were small in size.”[iv] They had items such as mirror cases, baby
rattles, and shaped bottles.
Through Hyatt and Burrogh’s engineering genius,
creations were constantly being designed in plastic. The United States first began creating
bottles, relief maps, cigarette types, ice
cube trays, and ping pong balls. Europe formed polyvinyl chloride (PVC) used in Phillips
refrigerators, and piano keys. In 1938
an automatic thin-sheet roll-fed thermo-former was developed by Klaus B. Strauch
Company which increased production speed to a never before seen high. Not only were plastics used for common
household products but also for military items.
During World War II, aircraft windscreens, machine gun turrets, and
domes were being formed from plastics. In
1948, in England,
cast acrylic bathtubs were thermoformed by the Troman brothers, and in 1954
skin-packaged products were first shown at hardware manufacturer association
trade shows. Then in the 1970’s, the
first thermoformed plastic concept car body was designed by Borg-Warner Inc.[v]
“Today
heavy
gauge plastics are used as cosmetic surfaces on permanent structures such
as kiosks, automobiles, trucks, medical equipment, material handling equipment,
spas, and shower enclosures, and electrical and electronic equipment.”[vi] With the growth of education and corporate
enterprise, new engineering technologies have been invented to aid in the
thermoforming process. “Although the
basic forming process is very similar to what was invented many years ago, microprocessor
and computer controls on more modern machinery allow for greatly increased
process control and repeatability of same-job setups from one production run to
the next, usually with the ability to save oven heater and process timing
settings between jobs.”[vii]
Now
the industry has become a powerhouse bringing profits in the hundreds of
millions of dollars. Huge companies such
as: Mayfield
plastics, Thermo-Fab,
Universal-Plastics, and Lifetime have emerged. The market continues to expand in part
because of the versatility and variety of products made. There are so many things can be done with the
material. Now, whenever you enter a
Wal-Mart, Home Depot, Lowes or any other major retail store you will see
Thermoformed plastic. It has come along
way since it’s the early creation of kitchen wear.
[i]Throne, James L. Hanser Gardner
http://books.google.com/books?id=FIFlNYgV7poC Publications, "Understanding
Thermoforming." Accessed February 20, 2012..
[v] Throne,
James L. Hanser Gardner
Publications, "Understanding Thermoforming." Accessed February 20,
2012. http://books.google.com/books?id=FIFlNYgV7poC.
[xi]Wikipedia,
"Raised-relief map." Last modified January 5 2012. Accessed February
20, 2012.
http://www.google.com/imgres?um=1&hl=en&sa=N&pwst=1&tbm=isch&tbnid=rrTXghbYvDLS3M:&imgrefurl=http://en.wikipedia.org/wiki/Raised-relief_map&docid=aXk5kNG1UEbQGM&imgurl=http://upload.wikimedia.org/wikipedia/commons/thumb/3/31/Tatry_Mapa_Plastyczna.JPG/350px.