The United States of America Consumer Product Safety Improvement Act places regulations and restrictions on lead and phthalate content in plastic on children’s products: such as plastic spiral binding for children’s books.
A number of plastic spiral binding filament and coil suppliers produce materials that comply with CPSIA legislation. Make sure that your suppliers also can confirm through an independent, accredited U.S. lab that all of its products are lead-free and phthalate-free. Ask them to provide you with CPSIA Certificates of Conformity on the products you use to bind your books.
Use consumer safe products in all your bindery and finishing work.
And make sure that you communicate your use of safe products to your customers!