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N-8 High-Speed Gable Top
Packaging Machines
The Machines That Capture Freshness

Models N-8, N-8S, N-8ESL

A Connection to Performance
and Reliability
Today’s consumer is always on the lookout for taste,
convenience and – more than ever – food safety.
You, the processor, put in the taste. Delivering it
takes speed, “bulletproof” sanitation and reliable
performance. That’s us.

Evergreen N-8 Makes
the Connection
Designed to form, fill and seal mini cross-section
gable top cartons (single-serve or multi-pack), there
is an N-8 packaging machine ideal for your markets
– whether juice, milk, soup, drinkable yogurt, liquid
eggs or other convenience foods. And our GT Series
Eco-Pak machines offer Evergreen quality in slow
speed applications and entry-level markets.
You can provide safe, easy-open/easy-close solutions
for retail, schools, food service or vending machines
with maximum in-line productivity.
Bo om line?
You’ll have a machine that captures freshness.

Go ahead and speed.
N-8 machines form, fill and seal
4-10 ounce (120-300 ml), mini
cross-section gable top
cartons at speeds up
to 340 per minute
(20,400 per hour).

2

Maintain Product Quality
The N-8 features air quality control within standard
enclosures at critical areas of packaging. This forms a
more sanitary environment for the fill section. When
used in conjunction with the optional laminar flow
HEPA (High Efficiency Particulate Air) filtration, it helps
to maintain product quality and improve sanitation.

Increase Operator Productivity
N-8’s touch-screen, computerized controls and
monitors are straightforward, easy to use and
conveniently located. In most cases, one operator can
load, run and monitor more than one machine at a time.
• Simple – menu-based, multilingual operator panel
• Information-rich – diagnostic messages, input
options, internal troubleshooting on-screen
• Flexible – change fill weights via touch-screen; modify
timing values without interrupting operation
During startup and shutdown, the top and bo om
ovens, top and bo om sealers, top folder and fill
stations operate only when a carton is present. Sealing
functions for each line are controlled independently.
You’ll further minimize product loss and carton
scrap with advanced controls and automatic restart
sequencing.
The N-8 makes it easy to find an operating speed that
suits your operation. A variable frequency drive is
standard, with four operating speeds programmed.
When it comes to safety, “Machine Stop” controls are
located all around the machine.

3

Fresh, Easy
Clean-In-Place (CIP)
PRODUCT
INLET
VALVE

PRODUCT
TANK

STEAM

STEAM
REGULATOR

DRAIN
VALVE

HEAT
EXCHANGER

METERING
BOWLS
CIP
MANIFOLD

PUMP

WATER
CHEMICALS

RESERVOIR

Fast, Flexible
Carton Infeed
Special magazines make feeding carton blanks fast
and easy. Each holds up to 600 blanks for maximum
workflow. All N-8 controls and monitors are within
easy reach, making it easy for the operator to oversee
machine performance.
Photoeye sensors automatically stop feeding when a
carton jams or a pre-set low carton level is reached.
This minimizes product loss and carton waste.
Need to switch carton size? Not a problem. Mandrel
carton stops and conveyor rails adjust easily in minutes
– and no hands ever have to touch the mandrels. For
maximum flexibility, the N-8 can be set up to run two
different carton sizes simultaneously. It’s even possible
to run two different products at the same time with an
optional Evergreen twin product tank system.

4

The only parts that cycle during N-8 Clean-InPlace (CIP) are the ones that you want to clean.
Less wear on parts.
To make things even easier, the entire CIP
process can be automated. N-8’s optional, selfcontained CIP can be programmed to cycle on
a variable-time basis. Everything from chemical
injection, fresh water flush and thorough CIP
system draining occurs automatically according
to your pre-defined need.

The N-8 pulls carton
blanks from the magazine,
opens and squares them,
and then positions them
onto the mandrels for
bo om forming.

Durable, Sanitary
Carton Forming
Stand up to caustic cleaning solutions and sanitizers
– the N-8 design incorporates stainless steel, including
the mandrels. To prevent potential contamination
from condensation forming on the mandrels, a semiautomatic system adjusts the temperature of the
circulating cooling solution to above the ambient air
dew point.
In addition, a programmed controller sprays sanitizing
solution on product-contact surfaces, protecting both
the form and fill sections from contamination. This
automatic sanitizing system helps maintain a clean
machine – and product quality. An optional machinemounted automatic sanitizing tank is also available.

5

Energy Efficient
Bottom Sealing
To save energy costs, maintain product temperature and
reduce carton distortion, N-8 bo om ovens heat carton
flaps in a selective pa ern that permits a proper seal and
increases carton strength.
To complete the seal, low pressure extends the sealers
against the heated flaps; high pressure then maximizes
closure as the polyethylene cools and bonds the flaps in
place. Ceramic-coated skis allow easy carton movement
and prevent poly build-up.
During sealing, oven temperatures are monitored. Should
an oven fail, the machine automatically stops infeeding
cartons until the correct temperature is restored and the
infeed switch is manually reset.
If the machine stops, the ovens automatically
retract from cartons and a “knife” of air is
blown between them, eliminating the risk
of fire.

Pneumatic pressure
assures consistent
bo om seals. “Dams”
apply extra pressure
to potential leak paths.
Machine “reliefs” allow
for the folded layers
of paper.

6

Accurate, Automatic
Carton Filling
Everything about the N-8 is designed to deliver
sanitary, foamless, accurate fills, minimizing
product loss and carton waste.
• Auto-sanitized breaker stations pre-form top
flaps before filling
• Positive displacement metering system
produces accurate, foamless fill
• No carton/no fill
• Fill size and volume automatically changed
when new selection is made on touch-screen
panel; easy PLC adjustment, no manual pins
to change
• Product tank automatically kept at operating
capacity; if level falls below normal, carton
feed is suspended until product is replenished
and operator initiates safe restart
• Standard N-8 includes fluid milk fill valves
and juice nozzles; special fill valve for pulpy
or viscous products (some juices, eggs, liquid
yogurt) also available
• Twin fill tanks optional; run two different
products at the same time

Leak-Proof
Top Sealing
Evergreen packaging machines are famous for
leak-free, easy-open top seals. The N8 also saves
energy, enhances safety and simplifies top-sealer
cleaning.
Cartons are held securely in conveyor pockets as
ovens quickly heat and activate the polyethylene
seal coating on the flaps, using a selective pa ern
to save energy.
To eliminate fire hazard during stoppage, the
ovens are automatically retracted from cartons
and a “knife” of air blown between them.
Cleanability is made easier by placing the sealer’s
air cylinder and other mechanical components
under the fill table — also protecting them from
product and cleaning solution.

Top seal quality improves by passing cartons
through two sealing stations. Each station
utilizes high-compression sealing jaws. The
second set of jaws facilitates embossed pull
dates or alphanumeric coding.
7

Operational Benefit Summary
1

Regulate CIP cycling automatically
with a programmable controller.

2

•

3

4

5

8

6

Cut maintenance time. The N-8’s
stainless steel mandrels and hubs
resist caustics, sanitizers, citric acid
and lactic acid.

Save on energy, cut paper
waste and get be er seals with
Evergreen’s selective heat system
and quiet, pneumatic sealing.

7

Cut maintenance time and extend
machine life with automatic
lubrication and sequential startup
and shutdown. Functions operate
only when a carton is present.

More precise volume se ing at
operating speeds. Convenient PLC
control means there’s no need to
shut down.

8

Reload less o en. Infeed magazines
hold up to 600 carton blanks for
each line or a total of 2,400 blanks.

9

Control mandrel condensate
with a semiautomatic system that
adjusts the captive cooling solution
temperature above the ambient air
dew point.

Eliminate operator guesswork.
Built-in 24-volt-safe, programmable
controller governs filler functions,
automates CIP cycles, senses low
carton level and detects carton
jams at the infeed station and
throughout the conveyor. Overall
operation of the machine is made
easier thanks to a touch-screen
interface that indicates machine
status at all times.
Save machine wear during CIP.
Only those parts to be cleaned are
cycled.
Fill two different products at one
time with operational twin product
tank system.

10

Minimize poly build-up with
ceramic-coated skis.

11

Less product waste. Sensors assure
you there’s no fill when there’s no
carton.

12

More accurate fills, thanks
to a new generation positive
displacement metering system.

7
1
3

2

5

8

Twin Tank Option Shown

4

10
9

6
11
12

9

New Length, New Abilities
N-8S (Stretch) and N-8ESL
The latest additions to the N-8 family provide all the proven
benefits of Evergreen’s original — the difference comes with
added length and extended shelf life (ESL) features.
Look for these variations in both N-8S and N-8ESL machines:
• Longer machine frame (see table on facing page)
• Added window on Line 4 former door for extra
visibility into bo om forming section
• Added space between mandrels and top folders
for optimal access
• Added visibility on filler frame doors
• Additional legs for minimized vibration and
increased durability
• Adjustable independent control valves for gentle, uniform heat
to top and bo om sealers
• Water-cooled, ceramic-coated skis for easy carton movement
and prevention of poly build-up
N-8ESL includes:
• Single Class 100 HEPA system
– high volume, low pressure laminar flow with UV treatment
– low volume, high pressure ducted to carton treatment system
• 35% hydrogen peroxide spray with HEPA drying station
• Auto-sanitizing (optional tank on machine)
• Self-contained CIP system

10

Dimensions & Utilities

Worldwide OEM
Parts & Services

N-8 • NL-8 • N-8S • N-8ESL

N-8

NL-8

N-8S (stretch) N-8ESL

14.3 KVA 3-60-230
(standard)
78.3 KVA 3-60-230
(optional)

14.3 KVA 3-60-230
(standard)
78.3 KVA 3-50-230
(optional)

N/A

N/A

78.3 KVA 3-60-230
(standard)

100.01 KVA 3-60-230
(standard)

Compressed Air

70 SCFM
@ 90 psi

1.99 M3/min
@ 6.3 kg/cm3

70 SCFM
@ 90 psi

70 SCFM
@ 90 psi

Natural Gas

150 CFH
1000 BTU/
15-27” H2O

4.25 M3/hr
8900KCAL/m3
28-50 MM/HG

N/A

N/A

Electrical
Gas Heat
Electric Heat
(Transformers available for other
voltages at additional cost)

(Not needed with
electric heat)

3

City Water

Not needed

Not needed

Not needed

Not needed

Cooling Water

11 GPM
34°F
40 psi minimum

42 L/min
1°C
2.8kg/cm3 minimum

11 GPM
34°F
40 psi minimum

11 GPM
34°F
40 psi minimum

Conveyor Soap

6 GPH
continuous

23 L/hr
continuous

6 GPH
continuous

6 GPH
continuous

Sanitizing Solution

3 GPM
@ 40 psi
intermi ent

12 L/min
@ 2.86 kg/cm2
intermi ent

3 GPM
@ 40 psi
intermi ent

3 GPM
@ 40 psi
intermi ent

Length

200 in

508 cm

248 in (629 cm)

252 in (639 cm)
(includes CIP skid)

155 in
87 in

394 cm
221 cm

155 in (394 cm)
87 in (221 cm)

155 in (394 cm)
87 in (221 cm)

103 in

262 cm

(with or without HEPA)

(with or without HEPA)

109 in (277 cm)
(without HEPA)

132 in (335 cm)
(with HEPA)

11.2 M2

150

(Includes Discharge Extension)

Width doors open
doors closed

Height

Total Floor Space

121

2

2

(13.9 m2)

153

2

(14.1 m2)

11

Immediate A ention.
Evergreen quality and knowledge
comes with US-based technical
support and parts for your efficiency.
We look forward to working with you
to achieve high productivity in-plant
and high-quality, safe and convenient
product for your customers.

Call us at 319-399-3200

Because of the constant improvement
program at Evergreen Packaging,
specifications are subject to change
without notice.

2400 Sixth Street SW
Cedar Rapids, IA 52404 USA
Ph 319-399-3200
Fx 319-399-3543
evergreen.packaging@everpack.com
www.evergreenpackaging.com
E-103 ©2007 Evergreen Packaging

4/07

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