FK-FSC-350 Three-Side Seal Bag Making Machine
HCI CONVERTING EQUIPMENT · BAG MAKING
The FK-FSC-350 is an economical center seal and three-side seal bag making machine; with its simple design and ease of use, it is the most economical investment for producing light-duty bags. In its standard configuration it produces center seal and two/three-side seal bags, and with the optional gusset device it extends to gusseted bag production. Servo material pull and microcomputer control deliver compact, precise bag making. As the Turkey distributor, GMG Technic handles sales, installation, commissioning and technical support.
CENTER + THREE-SIDE
Gusset production optional
SERVO PULL
2000W automatic pull
130 PCS/MIN
Mechanical speed 30–130
Let us plan the FK-FSC-350 configuration together for your center seal / three-side seal bag line.

Production Advantages
- Economical Multi-Type Production — Center seal, two-side seal and three-side seal bags on a single line; low investment cost thanks to a simple design and easy operation.
- Servo Feeding Precision — The feed length is precisely controlled by a servo motor integrated with a photocell, significantly increasing production speed.
- Automatic Bottom Lifting — The bottom seal bar automatic lifting device prevents overheating and tearing of the material when the machine stops (Patent No. 42360).
- Skip Sealing — With the skip seal function, bag length can extend up to 9 times the feed length, offering flexibility for long products.
- Microcomputer Control — Automatic counting, cumulative production logging and automatic stop when the photocell is disabled; precise heating with automatic temperature controllers.
Applications
- Center seal bag production
- Two-side and three-side seal bag production
- Gusseted bag production (with optional gusset device)
- Light-duty poly bags and pouches
- Food and industrial flexible packaging
What is the FK-FSC-350?
Economical center seal / three-side seal bag making platform

The FK-FSC-350 is a center seal and three-side seal bag making machine designed for the economical production of light-duty bags. Film fed from the horizontal unwind stand is formed in the sleeve forming section and sealed with water-cooled molds in the center seal and twin bottom seal sections.
Key features
- ›Center + three-side seal bag
- ›Light-duty poly bags and pouches
- ›Servo feeding + photocell
- ›Microcomputer / HMI control
- ›Twin bottom seal + water cooling
- ›Skip sealing (9x feed)
Technical Specifications
FK-FSC-350 working principle and core technical features
Servo Pull + AC Drive
AC motor control system for the main drive; an AC 3HP main drive and 2000W servo automatic material pull deliver precise bag length.
Horizontal Unwind Stand
Horizontal unwind stand, 3″ air shaft and 2.5 kg/m powder brake (unwind tension); the reel is loaded by a single operator.
Sleeve Forming
The film is formed with a sleeve forming plate (flat & gusset); sized to order, with cylindrical and conical forming wheels.
Center Seal Section
Center seal stand with top heating + bottom silicone pad; 8/10/12 mm center seal molds, 800W heater and automatic thermal control.
Twin Bottom Seal & Water Cooling
First and second bottom seal stands, 8/10/12 mm molds, water cooling device and seal bar automatic lifting.
Gusset Forming & Heating
Gusset forming disc and web pulling stand; heating/forming stand, silicone base plate and thermal control.
Tool-Free Mold Adjustment
Tool-free clamping lever for center/gusset/bottom seal molds, seal bar travel/adjustment wheels and rack-and-pinion parallel movement.
Skip Sealing & Cutting
Skip seal and cutting device (max. bag length 1,200 mm); skip seal up to 9 times the feed length.
Photocell & Cutting
The feed length is precisely controlled by a servo integrated with a photocell; cutting unit and static eliminator are standard.
HMI Control System
Operating speed and bag length setting, automatic counter, total production logging, printed/unprinted mode and automatic stop when the photocell is disabled.
Technical Specification
| Classification | Economical center seal / three-side seal bag machine |
| Material Width | 60 – 720 mm |
| Material Diameter | 450 mm (max.) |
| Bag Length | 50 – 280 mm |
| Bag Width | 30 – 350 mm |
| Mechanical Speed | 30 – 130 pcs/min |
| Feed Speed | 0 – 22 m/min |
| Main Drive | AC 3HP |
| Material Pull | Servo 2,000W (automatic) |
| Max. Skip Cut Length | 1,200 mm |
| Control | HMI / microcomputer control system |
Standard Equipment
Units supplied as standard with the FK-FSC-350

Horizontal Unwind Stand
Horizontal unwind stand, 3″×700 mm air shaft, 2.5 kg/m powder brake (unwind tension), material feed roller and AC 1HP automatic feeding device.

Pneumatic Buffer Roller
Air-pressurized buffer roller assembly; balances film tension to maintain stability during high-speed feeding.

Sleeve Forming Section
The film is formed with flat and gusset sleeve forming plates (sized to order) together with cylindrical and conical forming wheels.

Center Seal Section
Center seal stand with top heating + bottom silicone pad; 8/10/12 mm seal molds, 800W heaters and automatic thermal controller.

Gusset Forming Device
A gusset forming disc and web pulling stand create the gusseted bag form.

Gusset Heating Device
Heating/forming stand, 220V×400W heater, silicone base plate and automatic thermal controller.

Bottom Seal Section
Twin bottom seal stand (top + bottom heating), 8/10/12 mm molds, water cooling device and seal bar automatic lifting.

Tool-Free Mold Adjustment Device
Tool-free clamping lever for center/gusset/bottom molds, seal bar and gusset stand travel/adjustment wheels, rack-and-pinion parallel movement.

HMI Control System
Operating speed and bag length setting, automatic counter, total production logging, printed/unprinted mode and automatic stop when the photocell is disabled.

Photocell
A photocell that reads the registration mark on printed film to precisely control the feed length; standard together with the cutting unit.
Modular Options
Functional options that can be added according to your line requirements
Pneumatic Puncher (⌀6 mm)
Pneumatic puncher and related parts; the ⌀6 mm punching set opens a vent/hang hole in the bag.
Pneumatic Puncher (Rhombus 2×4 mm)
Pneumatic puncher and related parts; rhombus 2×4 mm punching set for a custom hole shape.
Pneumatic Hang-Hole Puncher
Pneumatic hang-hole puncher and related parts; hang hole formed by a “Mexican hat” slot die (22×4.2×7.2 mm).
Zigzag Cutting Unit
Zigzag cutting unit with 3 mm × 200 mm cutting width; for serrated edge cutting.
Conveyor
AC60W drive motor and inverter-based feed speed adjustment; conveys the cut products with an L1400×W350 mm working area.
Turkey Distributor
HCI Converting Equipment sales point in Turkey.
Installation & Commissioning
On-site installation, alignment and initial parameter calibration.
Operator Training
Operator and maintenance staff training after commissioning.
Spare Parts & Technical Support
Long-term spare parts supply and remote / on-site service.
BROCHURE & TECHNICAL INFO
FK-FSC-350 Detailed Technical Information and Project Assessment
Contact us about your bag making line configuration.
FK-FSC-350 is a product of HCI Converting Equipment Co., Ltd. GMG Technic Makina San. ve Tic. Ltd. Şti., as the Turkey distributor of HCI Converting Equipment, handles sales, installation, commissioning, operator training, spare parts supply and technical service.
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