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One-piece folder & book-wrap mailer, made in Chittagong EPZ
For flat goods, a box is often more than you need. The one-piece folder we make in Chittagong EPZ is a single scored blank that wraps up and around the contents, closing snug with no separate lid and no loose parts — strong on the edges and corners, light on postage, and flat until the moment you pack it.
One blank that wraps the product
A one-piece folder, often called an OPF or book-wrap, starts as a flat corrugated sheet with all its creases pre-scored. You lay the product on the central panel, fold the side and end flaps up and over, and the blank becomes a snug box in a few seconds — no lid to align, no tape line across the face unless you want one. The book-wrap variant adds adjustable creases so the same blank can close tight on different thicknesses, gripping the contents rather than rattling around a fixed cavity.
That snug, low-profile fit is what makes it ideal for flat goods: books and printed matter, lookbooks, documents, folded apparel and accessory cards. Because there is only one piece and no void to fill, it uses less board than a box of equivalent protection and keeps both volume and postage weight down. We die-cut and crease these in E and B flute for clean folding and a printable face, and can add a peel-and-seal or tape strip so they close in one motion on the line.
Single-blank build
No separate lid and no loose parts — folds flat for storage, sets up in seconds.
Snug on flat goods
Adjustable book-wrap creases grip books, documents and folded apparel firmly.
Postage-light
Low profile and minimal void keep dimensional weight and shipping cost down.
Flat, thin and edge-sensitive
Reach for a one-piece folder when the item is flat and you want firm edge protection without the bulk or cost of a full box. It is a favourite for e-commerce and direct-to-consumer apparel.
- Need a printed, shelf-ready shape with a window? See die-cut retail boxes.
- Shipping in bulk rather than singly? A RSC master carton may suit better.
- Have the item dimensions? Request a quote and we will reply within 24 hours.
Book-wrap mailer FAQs
What is a one-piece folder (OPF)?
A one-piece folder is a flat corrugated blank with pre-scored creases that wrap up and around the contents to form a box with no separate lid. The book-wrap style adds side flaps and adjustable creases so the wrap closes snugly to the thickness of the goods.
What is a book-wrap mailer best for?
It suits flat or thin items — books, printed matter, documents, lookbooks, folded apparel and accessory cards — where a snug, low-profile wrap protects edges and corners while keeping postage weight and volume down.
How does a one-piece folder close?
Most fold and tuck shut, often with a peel-and-seal strip or a tape strip we can add. There are no loose parts to lose, so it assembles fast by hand and ships flat until needed.
Shipping flat goods?
Send the item size and thickness and we will quote a wrap mailer within 24 hours.