Welcome to Wenger Manufacturing

World Supplier of Extrusion Systemssince 1935

• Focused on core product – extrusion systems of Pet Foods. Aquatic Feeds, and Textured Vegetable Proteins and other Food applications

• Approximately 85% of Pet Foods worldwide are produced on Wenger systems

History of Extrusion Technology

Manufacturer of Extrusion and Drying Systems

1948 2012

1935 – Brothers, Joe and Louis Wenger started the Wenger Mixer Company - and began the manufacture of mixers and other basic feed milling machines.

Our Company

2012 – Still family owned and operated, Wenger Mfg. Company employs over 300 people world wide, including those at our sister company Extru-Tech Inc.; a wholly owned & operated business.

1929

Brothers Joe & Louis Wenger - sons of Swiss immigrants and the youngest of nine brothers - confront the U.S. Great Depression by rebuilding their feed mill which had just been destroyed by fire.

The economic situation of the time requires the two young brothers to innovate new solutions to solve old problems.

1935

The brothers form a second partnership - Wenger Mixer Company - and begin the manufacture of mixers and other basic feed milling machinery.

The first mixers were designed to mix molasses and other liquid ingredients with whole grains.

1948

Wenger builds its first extruder, a novel machine designed to blend molasses with dry feedstuffs and compress it into pellets.

Wenger fills its first foreign order - a pelleting mill for installation in Venezuela.

1954

1958LaVon Wenger, son of Louis, patents the first commercial cooking extruder for the production of expanded pet food.

1965Wenger builds a research plant in which to

demonstrate its equipment and develop new processes.

Wenger Manufacturing, Inc. Worldwide service

Kansas City

Antwerp, Belgium

Taichung City, Taiwan

Sabetha, Kansas

Beijing, China

Sao Paulo, Brazil

Wenger Manufacturing, Inc.Research and Development

The Wenger Technical Center• Demonstrations and R&D for 1 or 2 Clients/Day

• Staffs 24 Employees

• Cereal Chemists

• Process Engineers

• Service Engineers

• Over 1,500 Test Runs

• 2,500 Square Meter Processing Area

2010

Wenger Manufacturing, Inc.Research and Development

Extension Research Centers

at 6 University Sites• Demonstrations and R&D 150 Days/Year

• Assisting Staff as Required

• Cereal Chemist

• Process Engineers

• Service Engineers

• Over 775 Test Runs per Year

• Each Research Center has Specialized Field

The Markets We Serve

45%

30%

20%

5%

Petfood

Aquatic

Human Consumption

Industrial/Other

41%

14%11%

11%

9%

8%6%

US/Canada West Europe East Europe

China SE Asia S. America

Other

The Markets We Serve

Trends Impacting Feed and Food Industry:2 Major Issues are Food Safety and Energy Efficiency1) Food safety:  Challenges with contaminated ingredients and products 2) Energy efficiency and water conservation:  Higher energy costs and 

concerns about water availability 3) Raw material costs:  Volatile ingredient markets 4) Market conditions:  Current economic recession is impacting consumer 

buying habits5) Emissions control: Reducing odor and particulate emissions 6) Supply chain cost reductions:  Shipping costs are higher 7) Automation:  Reduces labor costs and assists in food safety8) Labor costs: Uncertainties in the labor pool 9) Flexibility: Ability to react quickly to new market directions 10) Lean manufacturing: Cost cutting and improving efficiencies

Applications for Extruded Products

• Dog Food• Cat Food• Lab animal feeds• Aquatic Feeds• Livestock Feeds• Bird Feeds• Exotic Animal Feeds• Individual ingredients (Full fat soy for Bio-diesel plants)

100 to 37,000 lbs / hour

Pet Foods

Pet Treats

How Are Dog and Cat Foods Made?

First, ingredients are mixed together and ground into flour.

grinder / mixer

Then, the flour is fed into an extruder to cook into a shape!

Extruder (continuous pressure cooker)

Pet foods expand as they come out of the extruder and are cut by a rotating knife.

When the pet food expands at the end of the extruder, steam escapes into the air.

After the extruder, the wet product is often sent to a dryer.

Dryer

Pet foods are dried at 300º F for 20-25 minutes

In

Out

After drying, pet foods are coated and then packaged.

Extruders and dryers are operated by computers in a control room.

Some extruded foods have a filling injected and then are cut into

pillows.

Many different shapes, flavors, and colors are possible.

Co-Extruded Petfood

Why Extrusion Cooking ?

1) Cooks starch and other ingredients in the recipe

2) Shapes and sizes the product

3) Controls the product density (expansion)

4) Pasteurizes the pet food

Examples of Extruded Fish Food

1) Floatinga) Catfish

b) Carp

c) Tilapia

2) Slow Sinkinga) Salmon

b) Trout

c) Cod

3) Fast Sinkinga) Shrimp

b) River Crab

c) Sea bass/bream

Aquatic Feeds

Flaked and Expanded Breakfast Cereals

Direct expanded snacks of light densities

Snack Pellets (half products)

Extruded and Fried Snacks

Multi-Grain Chips

Fried Cheese Curls

Textured Vegetable Proteins

CHUNK

SMA

MINCED

HMMAFSP

Breading

Breaded Shrimp

Wenger ~ Precooked, Reformed Rice, Dahl, and Pasta

Precooked “Pulse” Analogs

Extrusion Today

Extrusion in 1948

1958

1988

Extruder Barrel

Twin Screw

Single Screw