Custom One Panel Folder OPF
The one panel folder is about as simple as corrugated construction gets. A single sheet, a few scores, and it wraps around a flat product to form a protective sleeve. There are no side walls, no flaps and no complicated assembly, which is exactly the point. We produce a lot of one panel folder OPF work at ZEE Packaging and its simplicity is what makes it so economical.
The Simplest Protective Wrap
A one panel folder OPF is a single scored sheet.
- One piece of board with score lines rather than a built structure
- It folds around the product and secures with tape or adhesive
- Uses considerably less board than any conventional carton
- Ships and stores completely flat with no assembly at all
- Folds around the contents in a couple of seconds
- Recycles as one clean piece with nothing added
Most operators choose a one panel folder OPF because it costs less than any box that would do a similar job.
Built For Flat Goods
The format is specific about what it suits.
- Books, prints and framed items
- Documents, catalogs and printed material
- Apparel and other soft flat goods
- Anything under a couple of inches thick
- Products that need rigidity rather than cushioning
- Not suitable for anything with real depth or bulk
- Standard wrap the everyday one panel folder OPF
- With an adhesive strip sealing without tape
- With a tear strip easy opening for the recipient
- Double thickness version extra rigidity for heavier items
- With corner protection reinforcing the vulnerable points
- Printed exterior branded flat shipping
Sizes We Print Regular
Every one panel folder OPF is built to your product, though these run often:
- 9" x 12" for A4 documents and books
- 12" x 16" for larger prints
- 8" x 10" for smaller items
- 11" x 14" for standard photographic sizes
- 13" x 19" for oversized flat goods
- 6" x 9" for compact books
Send us the thickness of the actual stack, since the fold allowance depends on it entirely.
Board And Print
- E flute corrugated for lighter flat items
- B flute where more rigidity is needed
- Kraft corrugated for a plain, low cost outer
- White corrugated where you want print on the wrap
- One color flexo, the cheapest branded route
- Litho laminated where full color matters
The fold allowance is the detail that matters. Score it for the wrong thickness and the wrap either gapes open or will not close, so we build it around your measured stack.
Materials That Cut Waste
- Recycled corrugated, standard across these grades
- FSC certified board, certificate available on request
- Soy based ink through the whole run
- Considerably less board than a conventional carton
- Paper tape or a paper based adhesive strip
- Right sizing so nothing is wasted on empty space
What Ordering Looks Like Here
- 100 unit minimum, so a small brand can test the format
- Free 3D mockup and flat proof before anything prints
- Free dieline drawn by our own designer
- Physical sample on request to check the fold against your product
- Urgent turnaround at 5 to 8 business days
- Free shipping worldwide with nothing hidden
Frequently Asked Questions
How is it different to a book wrap?
Very similar in principle. A book wrap usually has end flaps, whereas this format is a plainer single panel with no side closure.
Is it strong enough for shipping?
For flat goods, yes. Rigidity is what protects here rather than cushioning, so board grade matters more than thickness.
Do we need tape?
Either tape or an adhesive strip. We can apply a peel and seal strip in production if you want to skip tape entirely.
How much does a one-panel folder cost?
Rough estimate is $0.25 to $0.70 per unit for a plain kraft format, $0.40 to $1.00 with one color print and $0.70 to $1.80 for larger sizes at moderate quantity. Size moves it. Shipping is included in our price. This is estimate only, so ask our team for a exact quote.
How thick can the contents be?
Around two inches is the practical limit. Beyond that a proper carton protects considerably better.
Does it assemble quickly?
Faster than almost anything else. There is nothing to build, just a fold around the product.
Can it be printed?
Yes, inside or out. Printing the inner face works nicely, since it is revealed as the wrap opens.
