Customized 6mm-50mm 4:1 Pitch Spiral Plastic Coil For Book Binding

Customized 6mm-50mm 4:1 Pitch Spiral Plastic Coil For Book Binding

Product Details:

Place of Origin: China
Brand Name: Sudi
Certification: ROHS , SGS , CPST
Model Number: 1/4"-2"

Payment & Shipping Terms:

Minimum Order Quantity: 1500 pieces
Price: Negotiable
Packaging Details: Export carton
Delivery Time: 5-15 days
Payment Terms: T/T, L/C, D/P, Western Union, MoneyGram
Supply Ability: 500,000 pieces per month
Get Best Price Contact Now

Detail Information

Product Name: Plastic Filament / Plastic Comb Color: Customized
Material: PVC And PET Inner Diameter Range: 6-50mm
Usage: Student Book Binding Packing: Box Or Spool
Binding Thickness: 4.0-44MM
High Light:

3/8'' Plastic Spiral Bound


CPST Plastic Spiral Bound


3/8'' Spiral Binding Wire Plastic

Product Description

Customized 6mm-50mm 4:1 Pitch Spiral Plastic Coil For Book Binding


Company Profile.pdf



Coil binding

  • Spiral-bound plastic coils are one of the most popular traditional binding methods. They consist of a continuous helical coil made of durable and flexible plastic. For binding, these helical coil binding ridges are passed through several closely spaced holes and then curled around the edges. They allow your pages to flip front to back and are very flexible and durable so they spring back to their original shape even after heavy use and bending. This makes them the best binding solution for all kinds of textbooks, calendars, weekly calendars, and more.
  • The biggest advantage of the spiral plastic coil is that its color is richer than the metal spiral coil. There is no limit to the number of plastic spiral coils, and the price is more favorable than metal spiral coils and Wire-O Binding.
  • Plastic spiral coils are available in two materials, PVC and PET, the former is more affordable and the latter is higher quality.
  • Spiral-bound coils offer a more modern and durable way to bind books on traditional comb spines. One of the advantages of spiral-bound coils over many other binding methods is that coil-bound books are able to turn pages 360° without Damage content so they can lay flat and stay flat.
  • Please note that we are the manufacturer and all products support customization, helical coils can be implemented in other packages than spools.

Our advantage

Factory direct sales, no middlemen involved, our prices are very affordable, and the quality can be guaranteed.




How to choose a spiral coil?
You can choose your spiral plastic coil size according to the reference values in the table below. If you know the total thickness of the book to be bound, you can directly correspond to the binding thickness value in the table below.


Customized 6mm-50mm 4:1 Pitch Spiral Plastic Coil For Book Binding 0


Size (Millimeter) Size (Inches) Stack Capacity (Inches) Sheet Capacity* (20 lb. Bond) Filament Diameter
6mm 1/4" 5/32" Thick Stack 5-35 Sheets 1.6mm
7mm 9/32" 3/16" Thick Stack 36-47 Sheets 1.6mm
8mm 5/16" 1/4" Thick Stack 48-60 Sheets 1.6mm
9mm 23/64" 9/32" Thick Stack 61-70 Sheets 1.75mm
10mm 3/8" 5/16" Thick Stack 71-80 Sheets 1.75mm
11mm 7/16" 3/8" Thick Stack 81-90 Sheets 1.75mm
12mm 1/2" 13/32" Thick Stack 91-100 Sheets 1.75mm
13mm 17/32" 7/16" Thick Stack 101-110 Sheets 2mm
14mm 9/16" 15/32" Thick Stack 111-120 Sheets 2mm
15mm 19/32" 1/2" Thick Stack 121-130 Sheets 2mm
16mm 5/8" 9/16" Thick Stack 131-140 Sheets 2mm
17mm 0.67" 0.55" Thick Stack 141-150 Sheets 2mm
18mm 23/32" 5/8" Thick Stack 151-160 Sheets 2.08mm
19mm 0.748" 0.62" Thick Stack 161-165 Sheets 2.08mm
20mm 3/4" 11/16" Thick Stack 161-170 Sheets 2.08mm
22mm 7/8" 3/4" Thick Stack 181-200 Sheets 2.08mm
23mm 9/10" 4/5" Thick Stack 201-210 Sheets 2.08mm
25mm 1" 13/16" Thick Stack 211-230 Sheets 2.36mm
28mm 1-1/8" 7/8" Thick Stack 231-250 Sheets 2.36mm
30mm 1-3/16" 1" Thick Book 251-270 Sheets 2.36mm
32mm 1-1/4" 1-1/16" Thick Stack 271-290 Sheets 2.36mm
35mm 1-3/8" 1-1/4" Thick Stack 291-300 Sheets 2.36mm
38mm 1-1/2" 1-3/8" Thick Stack 300-320 Sheets 2.4mm
40mm 1-9/16" 1-1/2" Thick Stack 321-350 Sheets 2.4mm
45mm 1-3/4" 1-9/16" Thick Stack 351-390 Sheets 2.4mm
50mm 2" 1 -3/4" Thick Stack 391-440 Sheets 2.6mm


If you want an alternative solution to choose the best size, you can utilize this general rule of thumb:

  1. Take the pages and covers being bound and lay the stack flat on a table.
  2. Measure the thickness of the stack, but don’t press down; let it lay naturally loose.
  3. Add 1/8" to the stack thickness - that will be the size of the binding coil recommended for your document thickness.

Customized 6mm-50mm 4:1 Pitch Spiral Plastic Coil For Book Binding 1


If still not clear?


  1. If you are still not sure how to choose the appropriate size, spacing and length, please contact us ( WhatsAPP+86-17722306989)
  2. We are a factory without middlemen, so you don't have to worry about the price. The quality can only be shipped after passing the strict inspection of the internal quality inspection department, and each of our products has passed the environmental protection certification, please rest assured to buy.

Customized 6mm-50mm 4:1 Pitch Spiral Plastic Coil For Book Binding 2

We offer spiral plastic coils in various colors that can be used to make your spines.

Customized 6mm-50mm 4:1 Pitch Spiral Plastic Coil For Book Binding 3





Q: Are you a trading company or a factory ?

A: We are a factory but not a trading co. .


Q: Do you provide sample?

A: Various samples are available , freight cost is on your side .


Q: How long can I expect to get samples?

A: After you pay the sample charge and send us confirmed files, the samples will be ready for delivery in 1-2 days. The samples will be sent to you by express.


Q: What kind of color do you have ?

A: We can do products according to pantone color.


Q: What are your terms of payment?

A: 30% deposit, 70% balance before delivery. 30% deposit, the balance L/C. 100% in advance. Western Union/Paypal.




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