SLO Shrink Wrap Bundler for Oval Bottles
The SLO is a welding-bar shrink wrap bundler with side infeed, built for oval, rectangular, and other shaped bottles that will not sit correctly on a straight inline collator — lotion, shampoo, personal care, household, and pharmaceutical ovals.
After fill, cap, and label, bottles enter from the side. Depending on speed and shape, they are turned 90° with Autopack’s conveyor system or a pair of feedscrews so the wide face is in the pack orientation you set. A pneumatic pusher collates the pattern, the welding bar seals a film sleeve (two rolls, top and bottom), and the tunnel shrinks it tight.
Single-track lines typically run about 13–22 packs per minute. Double and triple track raise output; Autopack lists multi-track frames up to about 50 packs per minute. That is slower than SLO CMOS (overlap, printed film, 45 cycles/min) — and that is the point: smaller, simpler, lower cost when you do not need print or CMOS speed.
How the SLO wraps an oval bottle
- Side infeed. Bottles arrive on a side-mounted conveyor after fill/cap/label — not straight-on like a SIM.
- 90° orientation. Conveyor turn or feedscrews rotate each oval so the major axis matches the pack.
- Collation. A pneumatic pusher builds the pattern on the HMI (2×3, 3×2, 4×1, and similar).
- Welding bar. Two film rolls form a curtain. The pack is clamped; the bar seals top and bottom, cuts, and remakes the curtain.
- Transfer. As the bar rises, the next collation is pushed in and the sleeved pack is displaced onto the tunnel belt.
- Shrink + cool. Recirculated hot air tightens the sleeve; forced-air cooling sets a stackable pack.
That 90° step is the whole SLO family. The weld bar is what keeps this model cheaper and shorter than SLO CMOS.
Why plants choose the SLO weld-bar
It is the oval machine without CMOS cost. Same infeed problem (rotation), welding-bar economics.
Feedscrew when you need it, conveyors when you don’t. Brochure: configure with or without feedscrew depending on speed and shape.
Compact single / dual / triple track. One of Autopack’s smaller weld-bar packages; 90° or inline outfeed to fit the floor.
Quick changeover. Stainless construction, integrated HMI, line communication. Allen-Bradley on Holland-supplied systems.
Also runs rounds. Diameter range on the table is 20–85 mm for cylindrical product; rectangular ovals collate without the same guide limits.
At a glance
- Welding-bar shrink bundler, side infeed for oval / shaped bottles
- 90° orientation by conveyor turn or feedscrews
- Two film rolls, top-and-bottom weld
- About 13–22 ppm single track; multi-track 30–50 ppm depending on frame
- Frames: 45SLO, 60SLO, 62SLO, 82SLO
- Straight or curved infeed; 90° or inline outfeed
- Single, double, or triple track
- Stainless wrapper + tunnel, compact footprint
- Optional stabilizer, tear strip, aerosol tunnel
- Custom infeed/discharge; infeed height ~830–900 mm
Popular Options:
Cosmetics, personal care / HBA, pharmaceutical, household chemicals, and co-packers running oval bottles.
Optional. If print registration is the reason you are buying, spec SLO CMOS.
Not always. Autopack can turn bottles with conveyors or with feedscrews, depending on speed and shape.
About 13–22 packs per minute on single-track 45/60 frames. 62SLO and 82SLO are listed at 30–40 packs/min. Triple-track configurations are marketed up to 50 packs/min. Speed depends on bottle and pack size.
Weld-bar SLO: two film rolls, medium speed (~22 ppm single), lower cost, smaller footprint. SLO CMOS: one roll, overlap, printed film, up to 45 cycles/min. Same oval problem; different seal and speed.
An oval often arrives the wrong way for the pack. Side infeed plus a conveyor turn or feedscrews puts the wide face in the collation.
Oval, rectangular, and other shaped bottles that must be turned 90° before wrapping. It also runs round bottles, cans, and jars in the 20–85 mm diameter range.
