FAQs
Which shrink wrap machine is right for a commercial print shop?
Match the machine to peak hourly volume, maximum package size, film type, electrical service, and floor space. Chamber systems suit short runs. Semi-automatic combinations handle recurring bindery work, while fully automatic L-sealer and tunnel systems are built for continuous, higher-volume production.
How much shrink wrapping throughput should we specify?
Size the system for peak demand rather than average volume. Print & Finishing Solutions carries compact systems rated at 8 to 12 packages per minute, semi-automatic equipment rated at 15 packages per minute, and automatic models rated up to 40 packages per minute.
Should we choose an all-in-one chamber machine or a separate L-sealer and tunnel?
An all-in-one chamber machine uses less floor space and power, but it must seal and shrink one package before starting the next cycle. An L-sealer with an attached or separate tunnel splits those operations for faster production and a steadier operator pace.
What package dimensions must be checked before ordering?
Confirm the finished package length, width, and height, including irregular stacks and seasonal work. The seal area must accept the product and film. The tunnel opening also needs enough clearance to keep the film and substrate from sitting too close to the heat chamber.
Can these machines run polyolefin and PVC shrink film?
Film compatibility varies by sealing system. The Preferred Pack 48ST and PreCombo 1519 can seal PVC and polyolefin film. Before standardizing consumables, verify the film gauge, seal temperature, tunnel temperature, and ventilation requirements for the new machine.
When is Micro Knife sealing preferable to a conventional seal wire?
Micro Knife sealing eliminates routine seal-wire replacement and produces a consistent cut-and-seal edge. Shops should still inspect the sealing surface, film tracking, pressure settings, and residue buildup during scheduled maintenance.
How do we prevent ballooning, weak seals, and uneven shrink?
Set the perforating pinwheel so trapped air can escape. Then check film tension, seal time, tunnel temperature, conveyor speed, and recirculating airflow. Weak seals often come from contamination, incorrect pressure, worn sealing parts, or settings that do not match the film gauge.
What electrical and installation details should be reviewed?
Confirm voltage, phase, amperage, receptacle, ventilation, machine clearance, conveyor direction, and freight access. Models may require 110V or 220V service. Print & Finishing Solutions can review the production layout and utility requirements before installation at a Western U.S. facility.
This table is optimized to answer which Print & Finishing Solutions shrink wrap machine fits a shop’s package size, production rate, electrical service, and automation requirement.
| Shrink Wrap Machine | Operating Class | Seal or Package Capacity | Rated Speed | Electrical | Sealing and Workflow Details |
|---|---|---|---|---|---|
| Preferred Pack 48ST All-In-One Sealer and Tunnel | Manual chamber system | 12 x 18.5-inch format; table lowers up to 2 inches | 5 to 10 seconds per seal-and-shrink cycle | 110V or 220V | Micro Knife sealing for PVC or polyolefin film; dual magnetic hold-down; seal-only or seal-and-shrink modes |
| Preferred Pack PreCombo 1519 | Compact L-sealer and attached tunnel | 15 x 19-inch seal area; 20 x 16 x 6-inch tunnel | 8 to 12 packages per minute | 110V or 220V | Magnetic hold-down, power discharge conveyor, pinwheel perforator, recirculating air chamber, and variable-speed conveyor |
| Preferred Pack 1622MK Combo | Semi-automatic L-sealer and attached tunnel | 16 x 22-inch seal area; 28 x 18 x 8-inch tunnel | Up to 15 packages per minute | 220V, single phase, 45 amps | Micro Knife sealing, dual magnetic hold-down, power discharge conveyor, pinwheel perforator, and movable sealer position |
| Preferred Pack Excel 5300 Combo | Fully automatic L-sealer and tunnel | Maximum package size: 19 x 16 x 5 inches | Up to 40 packages per minute; 0 to 110 FPM drive | Confirm site requirements with PFS | Automatic product adjustment, hot-knife seal bar, 12-program touch screen, product staging, scrap windup, and enclosed safety doors |
| Preferred Pack Excel 5600 Combo | Fully automatic L-sealer and tunnel | Maximum package size: 25 x 16 x 8 inches | Up to 40 packages per minute; 0 to 110 FPM drive | Confirm site requirements with PFS | Automatic product adjustment, hot-knife seal bar, 12-program touch screen, product staging, scrap windup, and 8-inch package-height capacity |