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BELCO Sealer-Tunnel Combinations
Product Features

STC

This production proven Belco Model STC 2520 displays the Lighted Viewing Window as a standard feature along with a Watlow digital tunnel temperature control, three variable speed fan controls and adjustable conveyor speed control. This machine has a 25" Long x 19" Wide seal capacity and shows the optional air-operated seal head with dual Opto-Touch start switches and Hot Knife sealing technology. Your choice of Teflon mesh conveyor belt or rod/roller conveyor through the tunnel is available.

 

Main Power Switch
Turns on/off the power to the entire machine. Maintains all previously set tunnel adjustments which assures rapid start up and consistent quality at the beginning of your next shift.

Heater Switch
This switch allows the heaters to be shut off at the end of your production run without having to change temperature settings. This expedites start up and assures quality control. In addition, it facilitates machine “cool down" by allowing the tunnel fans and conveyor to run until cooled.

Variable Speed Conveyor Control
Allows you to adjust the conveyor speed to obtain the best quality “shrink" for your products regardless of their size or shape.

Digital Temperature Control
Insures consistent and uniform shrink quality by virtually eliminating any temperature fluctuation within the shrink tunnel. Presents a dual display read-out of both actual and set-point temperature to provide an accurate visual indication of tunnel temperature conditions. An added benefit of digital control is it minimizes setup and changeover time to further increase productivity.
(Not available on the STC 2016 "ECO".)

Adjustable Fan Speed Controls
Allows independent adjustment of air flow over all surfaces of your package. This assures quality shrink packaging plus maximum flexibility, no matter what the size or shape of your product.
(Not available on the STC 2016 "ECO".)

Teflon Mesh Conveyor Belt
This durable, non-stick belt is ideal for very small packages or multi-packs. The design of the mesh belt facilitates even air flow to all surfaces of your package and is essential when your product must be transported smoothly through the tunnel.

Live Roller Chain Conveyor
This conveyor is composed of 3/8” diameter rods, sleeved in silicone rubber and assembled on 1-1/2” centers. Useful for packages heavier than 5 to 7 pounds which may tax the Teflon mesh conveyor belt and for applications where optimum shrink quality is required.
(Not available on the STC 2016 "ECO".)

Hi-Density Live Roller Chain Conveyor
Similar to the conveyor previously described, the conveyor rods are mounted on 1” center-to-center spacing. Recommended for packages where there is concern of the product falling within the roller spaces.
(Not available on the STC 2016 "ECO".)

Lighted Viewing Window
Allows for faster set up and easy adjustment of controls to enhance packaging quality and productivity. It’s great for contract packagers or companies with in-house tours to demonstrate to customers how you monitor quality and productivity on a continuous basis. (STC 2520 only.)

Tunnel Curtains
Double silicone rubber re-inforced curtains form fit around your packages. This minimizes heat loss and maintains tunnel temperature accuracy and consistency to assure quality shrink packages.

Constant and Impulse Sealing
This switch allows the operator to choose the optimum sealing condition necessary to produce fast, strong seals depending on which commercially available film is used.
(Constant heat sealing is NOT available on the STC 2016 "ECO".)

Impulse Time
This time control monitors how long the element wire gets hot.

Seal Wire Heat Adjust
This control determines how fast and how hot the seal wire will get, allowing for maximum sealing speeds.

Sealing Wire Sensor
This unique switch prevents the sealing wire from overheating during the seal cycle. By sensing the correct seal wire temperature, fast, clean seals are obtained. You can expect longer seal wire life and reduced wear and tear to the sealing head assembly with this proven Belco System.

Hot Knife Sealing Technology
Two Watlow digital temperature controls adjust the heat to the front seal knife and the side seal knife for fast, clean sealing which is accurate and repeatable. The adjustable dwell time control monitors how long the seal knives are in contact with the film. (Not available on the STC "ECO".)

Film Roll Cradle
No tools are necessary to quickly change film rolls or sizes. This heavy duty film cradle has adjustable side guides to position the film and a film unwind brake to adjust how fast the film unwinds. A film splitter bar helps open the center fold film.

Infeed Tray
The aluminum infeed tray with Film Opening Horn assures easy product loading into the film, maximizing your productivity and minimizing operator fatigue.

Seal Arm Guards
These guards clamp the film in an even and positive manner to reduce film tension during the sealing process and help insure quality seals.

Magnetic Clamps
Rather than using adhesive tape, magnetic clamps allow your operator to quickly change and maintain the bottom seal sponge and Teflon. In addition, it allows for flipping and reversing both of these wear items to prolong their life and lower your operating costs.

Adjustable Tilt Sealing Table
The product sealing table or optional take-away conveyor can be raised, lowered or tilted to allow smooth transfer of your product out of the seal area and into the tunnel.

Heavy Duty Locking Casters
Belco STC’s are mobile. You’ll find them easy to move from one production location to another assuring maximum production flexibility and productivity. Leveling pads are standard on all models.

Welded Frame
Belco STC’s are built to last. You can depend on years of trouble free production. All Belco Sealer-Tunnel Combinations start with the same premise…a heavy wall tubular steel welded frame. Solid...nothing to loosen up…nothing to become misaligned and cause unnecessary wear and downtime.

Standard Options:

Magna-Lock Sealing Arm System
Powerful magnets hold down the seal arm to provide semi-automatic operation and even seal pressure along the entire seal base. The adjustable timer provides the correct dwell time necessary to assure consistent, strong, quality seals.

Air-Operated Seal Arm
Dual Opto-Touch start switches begin the seal cycle and greatly reduce operator fatigue while creating the best seals possible in semi-automatic mode.

PLC Controlled Operation
Once the dual Opto-Touch start switches initiate a seal cycle, the PLC program lowers the sealing arm under low pressure. When the seal arm reaches the base, valves switch to high pressure for the sealing cycle.

Power Take-Away Conveyor
Once the seal is complete, the arm raises and the product is transferred out of the sealing area. An adjustable timer controls how long the conveyor moves the product, either all the way out of the seal area or just far enough to make the next package.

Powered Film Unwind
This motorized film cradle feeds film to the operator upon demand as the package is advanced into the seal area. Regardless of how fast the operator or how long or small the product size, this option can maximize production speeds while minimizing operator fatigue.

Adjustable Film Inverting Head
By turning film inside out in a 90° manner, an in-line packaging operation can be created to significantly increase production flow, lessen product handling and increase operator efficiencies. The adjustable height inverting head opens the film for the operator to help reduce fatigue. This feature also minimizes the amount of film required to wrap your package and eliminates the need to buy additional fixed heads for your other package sizes.

Hole Punches
Air evacuation devices come in several styles to best fit your machine and application. Choose pin-wheel, thermal, electro-magnetic, air or multiperf for your machine.

Falcon Belt Tunnel Conveyor

Product Take-Away Conveyor Time Delay for Polyethylene

Film Trim Removal System

Take-away Conveyor Transfer Bar

Added Tunnel Height

Tunnel Exit Extensions

Tunnel Guide Rails

Tunnel Conveyor Cooling Fan

Tunnel Product Cooling Fan

Automatic Cool Down and Shut Off

208 - 230 Volt, 3 Phase Power

440 Volt, 3 Phase Power

 

Model
Number
Conveyor
Style
Conveyor
Height
(Inches)
Max
Conveyor
Speed (ft/min)
Tunnel
Dimensions
(Inches)
Temp
Control
Seal
Area
Optional Air
Requirements
Maximum
Film Roll
Space
Requirements
(Inches)
Power
Requirements
Ship
Weight
(lbs)
   
   
   
Belt
Rod
Wide
Long
High
   
Long
Wide
CF/C
PSI
  
Wide
Long
High
Volts
Amps
Phase
   
STC"ECO"
Belt
33-36
60
N/A
18
24
8
F
20"
16"
N/A
N/A
26"
34
92
58
240
35
1
550
STC2016
Belt/Rod
33-36
60
90
18
24
8
F/C
20"
16"
.02
80
26"
34
92
58
240
35
1
625
STC2520
Belt/Rod
33-36
60
90
21
36
8
F/C
25"
19"
.02
80
29"
37
124
58
240
45
1
950

* CF/C: cubic feet / cycle

** The film roll cradle may not accept the same size
center fold film. Check maximum film size for your application.

For STC's equipped with the optional powered film unwind, add 14" to the
overall width of the machine and subtract 4" from the overall length.

 


 

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