Product Description
Crystal Flex Covers - UniCover Flex Clear Unibind Covers
Crystal Flex covers deliver a polished, professional look for bound documents using Peleman's Unibind Thermal Binding Systems. With one crystal-clear side and one matte side, you can showcase your first page with your preferred finish. These covers feature Peleman’s patented SteelResin™ adhesive for a secure, permanent bind that keeps your documents looking great and holding strong over time.
What are Crystal Flex covers? Crystal Flex covers combine the glossy visibility of SteelCrystal with the easy handling of SteelMat, making them ideal for professional reports, board materials, menus, and catalogs. They are designed exclusively for Unibind/Peleman thermal binding systems and require no customization to use.
Crystal Flex Size Chart:
| Spine Size | Legacy Size | 20lb Paper Capacity | 32lb Paper Capacity | Qty per Box |
|---|---|---|---|---|
| 03MM / 1/8" | XS | 20 Sheets | 15 Sheets | 110 covers |
| 05MM / 3/16" | S | 40 Sheets | 30 Sheets | 96 covers |
| 07MM / 5/16" | 60 Sheets | 40 Sheets | 88 covers | |
| 09MM / 3/8" | M | 80 Sheets | 65 Sheets | 72 covers |
| 12MM / 1/2" | 100 Sheets | 80 Sheets | 66 covers | |
| 15MM / 5/8" | L | 120 Sheets | 90 Sheets | 60 covers |
| 18MM / 3/4" | 160 Sheets | 110 Sheets | 44 covers | |
| 24MM / 1" | XL | 220 Sheets | 145 Sheets | 48 covers |
| 36MM / 1-1/2" | XXL | 340 Sheets | 230 Sheets | 24 covers |
“Legacy Size” reflects the original Crystal Flex release (XS, S, M, L, XL).
How to Use Crystal Flex Covers:
- Select the appropriate size cover from the chart above.
- Insert your printed pages evenly into the spine of the cover.
- Place the document into your Unibind Thermal Binding Machine.
- Once heated and cooled, your pages will be securely bound and presentation-ready.
Product Highlights:
- Transparent Presentation: Glossy or matte front options.
- SteelResin™ Adhesive: Permanent, secure bind.
- Professional Look: Ideal for reports, menus, catalogs, more.
- Exclusive Fit: Works with Unibind/Peleman thermal systems.
- Ready to Use: Multiple spine sizes available off-the-shelf.
Optional Vpaper – Lay-Flat Pages
Upgrade with Vpaper for documents that lay perfectly flat when bound. Each sheet has a built-in hinge for smooth, edge-to-edge opening. Ideal for catalogs, manuals, and presentations. Learn more about Vpaper.
Frequently Asked Questions – Crystal Flex Covers
Can I customize Crystal Flex covers with my logo?
Yes. While standard Crystal Flex covers are stocked plain, we offer custom foil stamping and printing services for branding and personalization.
Are Crystal Flex covers reusable?
No. Covers aren’t reusable for a new project, but they are editable for the same book. You can reheat the bound cover, swap or remove 1–2 sheets, and then rebind. For a different document, use a new cover.
Do they protect against spills or moisture?
Yes, the clear plastic offers light moisture resistance, helping shield documents from spills and handling wear.
Which Unibind machines are compatible?
Crystal Flex covers are compatible with all current Unibind/Peleman thermal binding machines, including the UniBinder 60, 120, 8.1, and 8.2.
Can I mix paper weights inside one cover?
Yes, as long as the total sheet count stays within the cover’s capacity listed in the size chart.
