An OPP labeling machine is an automatic rotary labeler that wraps a roll-fed oriented polypropylene (OPP) label around a rotating bottle and bonds it with hot melt glue at 120-160 °C, applied only at the leading and trailing edges of the label. Specified by its film it is a BOPP labeling machine - biaxially oriented polypropylene (BOPP) is the full term for the same reel - and the two names describe one wrap-around process. U-Packer builds the complete rotary OPP series in Guangzhou, China: from a 1,200 bph single-station labeler to a round-bottle carousel running up to 36,000 bph, placing full-wrap labels at ±1mm accuracy on plastic, glass and metal containers for mineral water, CSD, juice, food, detergent and daily chemical lines.
Because the film does not shrink, no heat shrink tunnel is needed and printed graphics stay undistorted. For the same printed area, roll-fed OPP typically costs 30-50% less than self-adhesive label stock, and glue is sprayed only on the two label ends instead of the full surface - the two reasons high-volume water and beverage lines stay on OPP wrap-around labeling.
OPP, BOPP and the films a rotary labeler runs
OPP and BOPP name the same label material at two precision levels. OPP - oriented polypropylene - is the generic term for stretched polypropylene film supplied in reels; BOPP - biaxially oriented polypropylene - adds that the film was stretched in both machine and transverse directions, which is how label film is actually produced. Procurement teams write OPP, BOPP or roll-fed film into the same specification, and the machine is identical. The same rotary labelers also run pearl film and paper-plastic composite wraps when the artwork calls for a matte or paper finish.
What all these materials share: they arrive printed in roll form, are cut to length on the machine and wrap 360 degrees around the container body - unlike die-cut front and back patch labels, which belong to the self-adhesive series. The process side of the same machines - glue system, cam drives, station count and the modular platforms above 36,000 bph - is covered in the hot melt glue labeling machine hub.
OPP labeler models at a glance
| Model | Speed (bph) | Bottles | Best for |
|---|---|---|---|
| Single-station rotary | 1,200 | Round, square | Entry level, small and medium runs, replacing manual labeling |
| Electronic cam rotary | 4,000-7,200 | Square, oval | Frequent changeovers, servo stations, no cam wear |
| Mechanical cam rotary | 4,000-7,200 | Square, oval | Single-format high-volume lines at the lowest machine cost |
| Round bottle carousel | Up to 36,000 | Round | Classic high-speed wrap-around lines for water and beverages |
| 5L-20L rotary | 3,500 | Round, 5-20 L | Bottled water, edible oil and chemical containers up to 20 L |
Lines above 36,000 bph - and lines that also run self-adhesive labels on the same frame - move up to the modular hot melt platforms listed in the hot melt series. Most OPP wrap-around labels go onto round bottles; the round bottle labeling machine hub adds the container-side view of the same machines.
Why beverage lines choose OPP wrap-around film
A full-wrap OPP label turns the entire bottle body into print area - 360 degrees of graphics with no patch-label edges facing the shopper. Because the film runs from a reel and is glued only at its two ends, there is no backing paper waste and no shrink tunnel energy, and label cost per bottle typically lands 30-50% below die-cut self-adhesive stock for the same coverage. On polypropylene bottles a PP film label keeps the pack mono-material and widens recycling options - how the adhesive affects this is examined in does label adhesive affect bottle recycling?. Estimate film and glue spend for your own line in the hot melt glue cost calculator, and match carousel speed to filler output with the labeling capacity calculator.
OPP labeling in action
Round bottle carousel applying wrap-around OPP labels with hot melt glue (watch on YouTube):
Specify your inquiry
For a matched model and an itemized quotation, send: bottle drawings with diameter and height, label artwork with label length and overlap, target bottles per hour (rated 15-20% above the filler peak), bottle material, and the floor layout of the line. U-Packer runs your bottles and labels on the proposed machine before contract - the full walkthrough is in the labeling process comparison and selection guide.
Frequently asked questions
What is an OPP labeling machine?
An OPP labeling machine is an automatic rotary labeler that wraps a roll-fed oriented polypropylene label around a rotating bottle and bonds it with hot melt glue at 120-160 °C applied only at the two label ends. U-Packer OPP labelers run from 1,200 to 36,000 bph at ±1mm accuracy on plastic, glass and metal containers, with modular platforms reaching 58,000 bph.
What is a BOPP labeling machine?
A BOPP labeling machine is the same wrap-around labeler specified by the full name of its film - biaxially oriented polypropylene (BOPP). OPP and BOPP film reels run on identical machines with identical glue systems; buyers write either term into the same specification, and the quotation does not change.
What is the difference between OPP and BOPP labels?
None at the machine level. OPP is the generic term - oriented polypropylene; BOPP adds that the film was stretched in both directions, which is how label film is produced. The same rotary labelers also run pearl film and paper-plastic composite wraps; what matters for the machine is that the material arrives printed in roll form.
How does an OPP labeling machine work?
In five coordinated steps. (1) An infeed screw and starwheel feed bottles into the rotary machine at a stable pitch. (2) A label drum pulls the printed OPP reel and cuts each wrap-around label to length. (3) A heated roller melts thermoplastic adhesive at 120-160 °C and applies it only to the leading and trailing edges of each label. (4) The label is wrapped around the rotating bottle and pressed into a seamless band. (5) Placement is held to ±1mm before bottles discharge; because the film does not shrink, no heat-shrink tunnel is needed.
What speeds do OPP labeling machines reach?
The single-station rotary runs 1,200 bph, the electronic and mechanical cam rotaries 4,000-7,200 bph, the 5-20 L rotary 3,500 bph and the round bottle carousel up to 36,000 bph; modular hot melt platforms reach 58,000 bph for new high-speed lines.
OPP or self-adhesive labeling machine?
Choose OPP wrap-around for high-volume full-body decoration on water, CSD and juice bottles: 360 degrees of print area, film cost typically 30-50% below die-cut stock and no backing paper waste. Choose self-adhesive for die-cut front and back patch labels, neck labels and frequent label changes; lines running both can combine the two processes in one dual-mode modular machine.
How much does an OPP labeling machine cost?
Machines are quoted per configuration: the single-station rotary is the lowest entry, cam rotaries scale with stations, and the carousel rises with speed and station count; modular configurations start around USD 100,000. Roll-fed film also cuts label material cost by 30-50% against self-adhesive stock - run your own numbers in the hot melt glue cost calculator.