Product Description
Thermal Binding Spines (11-Inch) for Unibind and Peleman Systems
Unibind Spine Covers (by Peleman) are versatile thermal binding spines for flexible, custom presentations. Unlike UniCover Flex, they do not include attached acetate covers—use your own front/back covers, Unibind CoverSets, or even bind without covers. Each steel spine includes a tear-away paper guide for easy loading on any Unibind machine. Formerly called SteelBack, these spines now also support crimping for a tighter finish.
What are Unibind Spine Covers? They’re cover-only spines that accept your pages (and optional custom covers), ideal for Letter-size portrait books, 11×17 landscape books, and top-bound (letter landscape) documents.
Unibind Spine Size Chart:
| Spine Size | Legacy Size | 20lb Paper Capacity | 32lb Paper Capacity | Qty per Box |
|---|---|---|---|---|
| 20 (03MM) | XS | 20 Sheets | 15 Sheets | 100 pcs |
| 40 (05MM) | S | 40 Sheets | 30 Sheets | 100 pcs |
| 60 (07MM) | 60 Sheets | 40 Sheets | 100 pcs | |
| 80 (09MM) | M | 80 Sheets | 65 Sheets | 80 pcs |
| 100 (12MM) | 100 Sheets | 80 Sheets | 66 pcs | |
| 120 (15MM) | L | 120 Sheets | 90 Sheets | 60 pcs |
| 160 (18MM) | 160 Sheets | 110 Sheets | 44 pcs | |
| 220 (24MM) | XL | 220 Sheets | 145 Sheets | 48 pcs |
| 340 (36MM) | XXL | 340 Sheets | 230 Sheets | 24 pcs |
“Legacy Size” reflects the original XS / S / M / L / XL release mapping. Also available in an 8" Spine (Letter Landscape) format.
How to Use Unibind Spine Covers:
- Select the correct spine size from the chart above.
- Align pages neatly; add your own front/back covers if desired.
- Insert the stack into the spine, centered against the adhesive.
- Place into your Unibind thermal binding machine and run a cycle.
- Allow to cool; then remove the tear-away paper guides at the perforation.
- (Optional) Crimp for a tighter, polished finish.
Product Highlights:
- Use Your Own Covers: Perfect for custom sets or no-cover applications.
- Steel Spine: Robust, durable binding you can trust.
- Crimp-Ready: Crimping embeds paper deeper into SteelResin™ for a firmer bind.
- Edit Capability: Bound material can be reworked if necessary.
- System Compatible: Designed for Unibind/Peleman thermal binding systems.
Frequently Asked Questions – Unibind Spine Covers
What’s the difference between UniCover Flex and these spines?
UniCover Flex includes attached clear/matte covers. These spines are cover-only (no acetate), so you can use your own front/back covers—or none at all.
Are the spines reusable?
No. Spines aren’t reusable for a new project, but they are editable for the same book. You can reheat the bound spine, swap or remove 1–2 sheets, and then rebind. For a different document, use a new spine.
Do I need to crimp?
Crimping is optional but recommended on thicker books. It compresses the spine so sheets seat deeper into the SteelResin™ for a tighter bind.
How do I choose the right size?
Use the chart above. Count sheets (include covers) and choose based on your paper weight (20 lb vs 32 lb). When in doubt, size up and crimp.
Can I bind 11×17 landscape?
Yes. These 11" spines support 11×17 landscape books. For letter landscape (top-bound), see the 8" spine format.
