English to Spanish Art/Literary Art, Arts & Crafts, Painting paper

¡Hola!

Sigo con mi traducción de productos de papel. Me aparecen "cotton paper" y "rag paper" en un texto. Ambos los he encontrado como "papel de algodón" pero tengo que utilizar dos términos distintos para diferenciarlos.

Este es el contexto:

Are cotton papers and rag papers the same thing?
The terms “rag” and “cotton” are often used interchangeably. However, rag specifically refers to papers made with cotton textile remnants. At one time, it was common for papers to consist of 100% cotton rag. However, over time, rag supply for use in papermaking became tighter as the use of synthetic fibers in textiles became more common.

¡Muchas gracias de antemano!