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Packaging Overview
& HistoryINTRODUCTION:
This article describes the often-ignored but high-potential world of pizza packaging.
Virtually everyone has experienced hundreds of pizza boxes in their
lifetime. Yet few know anything about the vessel that carries their favorite food.
Pizza Boxes is what this Power Packaging section is about. After you've
gained an overview of the origins of the good ol' pizza box, check out additional
pizza packaging articles in the Power Packaging menu to the left.
For
the latest on Cost-saving new GREEN
pizza boxes, click
here.
Although
a pizza box can be made of most any material ex., plastic and molded paper
pulp paper has generally been the material of choice for most pizza box
concepts, for three reasons. First, it's economical. Second, it has substantial
stacking strength, or crush-resistance. Third, it resists condensation build-up
on the interior surfaces. Paper-based
pizza packaging comes in two forms: (1) paperboard and (2) corrugated
board, often incorrectly referred to as cardboard. Paperboard
also known as boxboard, cartonboard, and cardboard is basically a single
sheet of very thick paper. Examples include chipboard and SBS (solid bleached
sulfate) board. NOTE:
In this article we use the term paperboard to refer to a single sheet
of paper. However, within the packaging industry this term also is sometimes used
in a way that it encompasses all packaging materials made of paper, which would
then include corrugated board, as well.
The
most common form of corrugated board used for pizza boxes is single wall corrugated.
It consists of two outer sheets of flat paper, called facings or liners, glued
to a fluted, or corrugated, inner sheet, called medium. Corrugated board was invented
in the 19th century and first used for making boxes as early as 1894. In basic
concept it has remained unchanged for over a hundred years and, so, carries the
distinction of being one of the most durable and versatile of modern inventions.
For more on corrugated board as applied to pizza boxes, see Structural
Options Pros & Cons. Pizza
packaging probably began in the 1940s after World War II. With the advent of carry-out
pizza, the first pizza package was most likely a combination of paper bag and
a chipboard or corrugated square. With this, the pizza is placed on the square
and the entire unit is slid into the bag which is taped or stapled shut. Subsequently,
a circle replaced the square shape, making it easier to insert into the bag. This
package was convenient (no pre-folding needed) and highly economical. But it lacked
stacking strength, heat retention, and product protection capability three
requirements for good pizza packaging. Soon
the paperboard pizza box appeared. It resembled the structure of bakery cake cartons
of the time, in that the four corners of the box were formed by inserting a tab
projecting from one wall into a slot in an adjacent wall. Due to the thinness
of the material, it requires a piece of aluminum foil or a chipboard or corrugated
pad in the bottom. To impart rigidity and prevent accidental cover opening, the
box is stapled or taped shut on all sides. This was slightly less convenient than
the circle and bag package, but it imparted a measure of heat retention and product
protection two key factors to functional pizza packaging. Circa
1960 the corrugated pizza box was introduced. Several individuals and companies
claim to be the originator. The switch to corrugated board provided substantial
stacking strength, improved heat retention, and greater product protection over
the paperboard pizza box. Tom Monaghan, founder of Domino's Pizza, has stated
that adopting the corrugated pizza box was one of the fundamental innovations
responsible for the growth of the Domino's Pizza delivery system. Two
basic design variations of the corrugated pizza box have evolved. The first is
a non-connected-corner carton in which the front wall and two side walls each
have a flap appended to the top edge which is positioned parallel to the bottom
panel. This structure formed the basis of the original Domino's Pizza box (used
until 1988) and also of a carton that has become known as the Chicago folder.
The box blank for the original Domino's Pizza folder box looked like this. The
box blank for the Chicago folder pizza box looks like this (taken from U.S. Pat.
4,265,393).
The second type of corrugated pizza box design that has emerged is what's known
today as the Traditional Pizza Box a connected-corner carton that has a
double-panel, or roll-over, front wall that encloses left and right front corner
flaps between the two panels of the wall, thereby locking the two front corners
of the box into upright position. Box manufacturers refer to this carton as the
roll-over box and also as the walker lock box. (No one
knows where the walker lock name came from.) This design is the most
widely-used pizza box in the world currently in use by Pizza Hut, Papa
John's Pizza, and Little Caesars Pizza
among thousands of other pizza companies.
In spite of its widespread use, this box possesses a number of drawbacks, described
in Downside of the Traditional Box.
The blank for the Traditional Pizza Box looks like this.
In the 1970s Little Caesars Pizza introduced the 2-for-1 concept. With an eye
on cost reduction, it invented the U-board and bag. With this particular package,
two pizzas are placed side-by-side on an elongated corrugated board. Opposing
lengthwise sides of the board are folded upward, creating a U-shaped board when
viewed from the end. And the entire unit is slid into a paper bag that's stapled
shut at the end. The advantages of this particular packaging design are large-looking
package and low cost.
In
1988 the first major change in corrugated pizza box structure hit the market.
It occurred when Domino's Pizza picked up on an eight-sided (octagon) box invented
by Stone Container (now Smurfit-Stone Container). It was dubbed the Octabox. For
an eye-opening look at the impact of box shape on consumer perception, see Groundbreaking
Little Ad. The blank for the Octabox looked like this taken from
U.S. Pat. 4,765,534. With
the introduction of the Octabox a boom in pizza box innovation began. Since then,
numerous variations of corrugated (and some non-corrugated) pizza box designs
have emerged, both by box manufacturers and by independent inventors. For the
pros and cons of square and non-square shaped pizza boxes, see Square
vs. Non-square. The
advent of the non-square pizza box ushered in the opportunity for graphics-structure
integration, or the creative merging of structure and graphics to produce pizza
boxes of heightened marketing impact (see GSI
Pizza Box Photo Collage and GSI: Pizza Chain Brand-builder). In
addition, the non-square shape made it possible to design ultra-low-cost pizza
box concepts that save up to 12 percent in material over the Traditional Pizza
Box. Finally,
with the proliferation of side item products such as breadsticks, chicken wings,
and the like, an offshoot of pizza packaging emerged in the 1990s and is now a
product line in itself (see Superior Side-item
Packaging). Now
that you've examined
the history of pizza packaging, if you'd like a glimpse of the future,
see Creating a Sales-building A-bomb.
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