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Feature Stories Archive
Boat Maker
'Pedals' Thermoforming Technique
Grand Rapids, MI-based Leisure
Life improves its sales and services by bringing its forming
in-house.
By Karen M.
Koenig
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BassTender fishing boats are
made from HMWPE and are light enough to be powered
by small outboards or electric trolling motors. The
boats feature: built-in trolling motor mount,
anchor locker/ice chest with drain and dry storage
compartment, and large livewell with aerator pump
and overflow drain.
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A leisurely approach to life is often the most
satisfying. For one Michigan-based company, it is also the
most profitable.
Grand Rapids-based Leisure Life Ltd. has distinguished
itself as one of the largest U.S. manufacturers of small
recreational boats. Since 1977, the company's product line
has grown from a single pedal boat to 24 models of small
recreational boats including: pontoon boats, fishing boats,
canoes, kayaks, tenders and dinghies, and of course, pedal
boats.
"We're the largest boat manufacturer in our market
niche," says Richard Sweers, vice president of
operations.
According to Sweers, Leisure Life was the first
manufacturer of its type to use polyethylene for pedal boats
in 1981. The company continues to use high molecular weight
polyethylene (HMWPE) "because of the functionality of the
product. It has proven to be the strongest and most durable
material available for our particular thermoforming
application," says Philip Globig, vice president of sales
and marketing.
"It is resistant to chemicals, does not corrode, resists
fading and cracking, is five times more impact-resistant
than fiberglass and is maintenance free &emdash; it never
needs to be painted," Globig adds. "In addition,
polyethylene allows minimal moisture absorption, has
excellent electrical insulating properties, has a
low-coefficient of friction and is much less costly than an
FRP or aluminum material. From a production standpoint,
polyethylene is easier to process."
The thermoformed pedal boats, kayaks, canoes, bass boats
and dinghies are made of HMWPE. The pontoon boats are
constructed of co-extruded Centrex/ABS.
"Centrex/ABS is resistant to a variety of chemicals and
acids and provides dimensional stability, offers electrical
insulating properties, low water absorption and the
increased rigidity we need for our larger electric powered
pontoon boats," Sweers says.
Leisure Life contracts with Primex Plastics to extrude
into sheet Phillips Chemical virgin HXM 50100 HMWPE and
Bayer Centrex/ABS. "We buy our sheets extruded to our
specifications. We specify the color and UV packages, width,
length, gauge, orientation, flatness..." Sweers says.
Leisure Life uses approximately 4 million pounds per year of
extruded sheet. During its peak periods, the company has the
capability to produce in excess of 350 boats per day.
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Creating Fun In The
Sun
In 1977, Charlie Billmayer was determined to
make a better pedal boat. His vision led to the
creation of Leisure Life Ltd., a company which
produced 540 single model pedal boats during its
first year in a 4.200 square foot plant.
The company has since grown, with capabilities
to manufacture more than 540 boats in two days
during peak season. In the 154,000 square-foot
plant, 80-plus full-time employees manufacture a
full range of small recreational crafts
including:
WaterWheeler pedal boats
BassTender fishing boats
ElDeBo and ESL Electric Pontoon boats
WaterTender dinghies
WaterQuest canoes
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In-House Thermoforming
For approximately eight years, Leisure Life Ltd. farmed
out its thermoforming business to contract formers. But in
1987, the company decided to bring the business in-house and
purchased a 7-foot by 14-foot EMC double-end shuttle, which
it rebuilt in-house.
"In addition to potential cost savings, a substantial
improvement in quality was expected, based upon direct
control over our thermoforming process," says Sweers.
With the double-ender in place, the company's sales grew
significantly, averaging 20 percent a year. To keep up with
increased business, in March 1994 the company purchased a
larger, customized thermoformer. Fully computerized, the
MAAC 138 RD three-station rotary thermoforming machine
features a customized 81Ú2-foot by 131Ú2-foot oven capable
of forming parts for the majority of Leisure Life's
watercraft. Sheets are loaded onto a lift table and fed
individually into the machine's heavy-duty clamp frame. The
dual element computer-controlled oven has ceramic heaters on
the top and Calrod heaters on the bottom. The 138 RD's
computerized programming system also has 11 pre-programmed
forming techniques.
Leisure Life forms approximately 75 different parts,
including decks, hulls and liners, using pre-colored,
UV-protected heavy gauge Centrex/ABS and polyethylene sheets
of different thicknesses. With the rotary former, the
company has reduced its cycle times for both ABS and
polyethylene by 25 percent, Sweers says. In addition, setup
time from last part to first part &emdash; removing and
installing the molds, heating the tool and making
adjustments &emdash; has been reduced from the previous
three to four hours on the non-computerized double-ender,
down to two hours on the 138 RD.
Leisure Life developed and installed a quick-change tool
system on the rotary former. To form ABS, the company uses
both aluminum-filled epoxy molds, which Leisure Life
produces in-house, and aluminum molds built by Tooling
Technology and Portage Casting & Mold; polyethylene is
formed strictly on the aluminum molds. The molds measure up
to 101 square feet and feature several large details and
contours for: coolers, drink holders, contoured seats,
battery compartments, storage wells, radios, electric
motors, depth finder consoles, etc.
"These types of amenities add value and differentiate the
mix of products and accessories we offer to our dealers and
their customers," Globig says. "We're doing some things with
polyethylene which are not typically done. We can thermoform
the 'consumer' comforts the same color of the boats &emdash;
rod holders, front and rear covers, hatch covers, etc."
In January 1999 the company added to its capabilities and
purchased an STP rotational molder to mold the canoe seats
and live wells, as well as other peripherals, Sweers adds.
"We previously owned the tooling and contracted the molding.
Now that it's in-house we see savings not only in cost
reduction but increased throughput and improved
quality."
In March 1999, the company replaced the EMC double-end
machine with a Comet 9-foot by 18-foot four-station rotary
machine capable of twin sheet forming. The machine had been
completely rebuilt by Custom Manufactures Inc. The addition
of this machine has enabled Leisure Life to bring all
thermoformed products in-house, as well as increase
throughput by as much as 50 percent when compared to the
EMC, Sweers says.
Fabricating The
Boats
Leisure Life puts an emphasis on quality control,
especially in its value-added engineering. In its
150,000-plus square foot plant, the company uses an
assembly-line process, by product group, to move the
recreational boats through the fabrication process.
"We do as much value-added work in the thermoform machine
cycle as possible," Sweers says. The company does not use
CNC routers, but rather relies on pin routers and two types
of hand-held routers &emdash; plunge and upright &emdash;
for its trimming. "We do the majority of the trimming in the
production cycle with plunge or upright hand-held Dotco
routers. The plunge routers use a router bit and the upright
routers use a small circular blade," he explains. The two
C.R. Onsrud pin routers are used in both the plastic and
wood shop for routing flat sheets to shape.
Pin routers are used to fabricate pedal boat front and
rear covers, bass boat floors and other contoured parts from
plastic. Pin routers are also used to fabricate bass boat
and tender transom boards, deck supports, seat backs and
other structural, contoured parts from wood. High speed
steel tooling is used for both plastic and wood.
Spin welders are used in the rotomold process to seal off
vent tube holes in parts. Extrusion welders are also used in
the production cycle for such things as welding the ribs in
canoes. Several of the bass boats and tenders utilize
extrusion welding to attach internal structural components
that tie the deck and hull together.
Leisure Life uses manufacturing resource planning (MRP)
for raw material purchase and production scheduling. "Our
shipping forecast drives the boat production schedule, which
drives our raw material purchase," Sweers says. "We make
subassemblies to forecast, then assemble boats to order.
"A lot of our parts are consistent across a product
group, which also allows us to bring together subassemblies
and build finished boats to order," he adds.
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JWA Purchases Leisure
Life
Formerly a privately-held company,
Leisure Life was purchased on Feb. 10, 1998, by
Johnson Worldwide Associates Inc., a
publicly-traded conglomerate in the outdoor
recreational products industry.
JWA operates several companies,
manufacturing brand recreational equipment in five
product groups: scuba and diving; backpacking and
outdoor equipment; fishing and tackle; motors; and
watercraft. Trade names for JWA products include:
Old Town canoes, Ocean Kayak and Minn Kota electric
motors.
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Seasonal
Business
Leisure Life continues to grow 10 to 20 percent each year
as recreational boats grow in popularity and new products
are introduced. According to Sweers, the company typically
comes out with two to six new products a season.
"It can take anywhere from three months to two years to
develop and introduce a product, depending on the
(complexity) of the product and how much is involved in the
manufacturing process," Sweers says. New pedal boats, for
example, might take a few months to develop, compared to the
ElDeBo Electric Pontoon Boat, which took three years to put
into production from time of initial concept.
Due to the seasonality of the product, production is
cyclical in nature. The company's thermoform department runs
16 hours per day, five days a week from November through
June and 8 hours per day, five days a week from July through
October. Leisure Life employs 80 workers year round,
including three full-time pattern makers. During peak
season, the company will add as many as 140 employees.
Much of Leisure Life's products are sold through its
nationwide dealer network. The company also sells its
recreational boats through mass merchants.
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