Telephone directory papers, also known as TD papers, are a type of lightweight newsprint paper that serves a specific purpose in the publishing industry. While they are primarily used for telephone directories, TD papers are also utilized in other types of directories and timetables. These papers are designed to be lightweight and easily portable, making them ideal for these types of publications.

TD papers come in a range of colors, including white, yellow, and pink. This variety allows for customization based on the specific needs of the customer, which is often a telephone company. By tailoring the color and other features of the paper, TD paper manufacturers can meet the unique requirements of each client.

One of the key characteristics of TD papers is their basis weight, which typically ranges from 28 to 40 g/m2. This low weight allows for easy handling and distribution, making TD papers a popular choice for telephone directories and other similar publications.

Unlike standard newsprint, TD papers are predominantly made from virgin fibers. This ensures a higher quality end product that is better suited to the specific needs of telephone directories. To produce TD papers, many manufacturers repurpose old standard newsprint machines, upgrading them to meet the unique requirements of this type of paper. Additionally, soft calendering, a finishing method that creates a smoother surface, is often employed to enhance the overall quality of TD papers.

TD papers face competition from standard lightweight newsprint in the market. While both types of paper offer similar qualities, TD papers have the advantage of being specifically designed for telephone directories and other directory-type publications. This specialized focus allows TD papers to better meet the needs of their target audience, making them a preferred choice for many publishers.

In conclusion, TD papers are lightweight newsprint paper grades that are primarily used for telephone directories. These papers are customizable and made from virgin fibers, making them ideal for the unique needs of telephone companies. With their low basis weight and tailored features, TD papers continue to be a popular choice in the publishing industry.