"coil binding"的定义和意义

What is "coil binding"?

Coil binding is a method of binding that uses a continuous plastic or metal coil or spiral to secure the pages of a book together. The pages are punched with holes along one edge, and the coil is threaded through these holes to bind the book. This binding type allows the book to lie flat when open, making it ideal for manuals, reports, and notebooks. Coil binding is valued for its durability and ease of use, as it can withstand frequent handling and allows pages to turn smoothly.