LP-557F
Auto Flap Folding Case Sealer
Cartons that need manual flap tucking before they hit the sealer slow down a line and add a labor step most operations would rather cut. The LP-557F auto flap folding case sealer closes that gap. It folds the top flaps and applies tape in one pass, so operators load cases without pre-shaping them by hand.
The LP-557F is built for plants running mid-volume carton lines that still rely on manual flap prep. As an automatic case sealer, it pairs a patented tape head with a flexible, cushioned mast that keeps the tape aligned and resists jamming even as carton sizes vary. Wide belts hold the case steady through the fold and seal cycle, cutting down on slippage that leads to crooked seals or rework.
At 20 meters per minute and 6 to 11 cartons per minute, the machine fits lines where a full high-speed case sealer machine would be overkill but a manual station can't keep pace. It runs on either 110V single-phase or 220V three-phase, so it fits into most existing plant setups without new electrical work. Tape overlap adjusts from 55 to 65 mm as standard, with custom overlap settings of 70±5 mm or 95±5 mm available for operations packing heavier or less uniform cartons.
- Machine Type: Automatic Case Sealer With Folding System
- Power Supply: 110 volt single phase or 220 volt three phase
- Sealing Speed: 20M/Per Minute
- Capacity: 6~11 Cartons Per Minute
- Tape Width: 2″ or 3″ optional
- Air: 6kgf/cm2
- Machine size: 82x40x61
Specifications
|
Spec |
Detail |
|
Machine type |
Automatic case sealer with folding system |
|
Power supply |
110V single phase or 220V three phase |
|
Sealing speed |
20 meters per minute |
|
Capacity |
6 to 11 cartons per minute |
|
Tape width |
2" or 3" (optional) |
|
Air requirement |
6 kgf/cm² |
|
Dimensions |
82 x 40 x 61 |
Built for Fewer Manual Touchpoints
The dual-side belt drive rides on an omni-bearing bracket, which reduces wear and noise compared to single-belt designs. Combined with the aluminum tape head bracket, the LP-557F keeps cartons moving in a straight, consistent line through the fold and seal stages rather than requiring an operator to square them up first.
For operations with mixed carton sizes or tighter QA requirements, the LP-557F has the featured options:
- No-tape detection
- Sealing failure detection
- Cutting-off failure detection
- Auto-stop device
- Safety fence
- Three-sided folding mechanism
Each option is built onto the same base machine, so adding detection or folding capability later doesn't mean starting over with a different case sealer machine.
Where It Fits on the Line
The auto flap folding case sealer sits between manual sealing stations and Landen's higher-throughput random run and top-belt models. If your cartons already arrive with flaps closed, a random-run case sealer or top belt-driven case sealer may be the better fit. If your line handles food-grade or washdown packaging, the stainless steel case sealer covers that requirement instead. For a full comparison across the case sealing lineup, see our Case Sealers.
Landen Strapping's engineers can walk through your current carton flow and confirm whether flap folding, speed, or environmental resistance should drive the decision. Request a quote to get sizing and pricing for your line.
Product Description
Enhance your packaging efficiency with our most advanced tape head, designed for precise and consistent carton sealing. The LP-557F fits seamlessly into a wide array of productions lines where high speed and reliability are a must. Additional features include sealing failure alerts, and a cutting-off failure indicator, along with optional safety enhancements such as an auto-stop device, a protective safety fence, and a three-side folding mechanism. Upgrade your packaging operations with a taping solution built for durability, precision, and efficiency.
FAQ
What does "auto flap folding" mean on a case sealer?
It means the machine folds the carton's top flaps closed before applying tape, instead of requiring an operator to tuck flaps by hand before the case reaches the sealer.
How fast does the LP-557F run?
The LP-557F seals at 20 meters per minute and handles 6 to 11 cartons per minute, depending on carton size and tape overlap settings.
Can the LP-557F handle different carton sizes without retooling?
Yes. The cushioned mast and adjustable tape overlap (55 to 65 mm standard, with 70±5 mm or 95±5 mm custom options) let the machine handle size variation without a full changeover.
Does the LP-557F require special electrical service?
No. It runs on standard 110V single-phase or 220V three-phase power, so most facilities can install it without new electrical infrastructure.
WE BUILD CUSTOM STRAPPING SOLUTIONS FOR YOUR INDUSTRY
Landen offers customers custom design configurations on specialized automatic strapping systems instead of the industry standard “out of the box” solutions.
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