The paper-making process starts with the production of pulp from raw materials, which undergoes a series of processes including trimming, bleaching, and chemical treatment to enhance its properties. Next, the paper is made by evenly distributing the pulp onto a paper machine, where the production line is still filled with water. High-pressure water jets are used to trim the paper edges, ensuring they are clean and sharp before the paper is dehydrated and polished. The paper is then cut to a uniform width before being dried to prevent it from cracking or becoming fuzzy.

High-pressure water jets are currently the most stable and efficient way to cut paper products, allowing for clean cuts without producing fuzz or tears. They can operate continuously for 24 hours, cutting through thick paper as easily as thin tissue paper, and their cutting strength is just as good as traditional cutting tools. Additionally, they do not get dull, reducing maintenance time and costs.

Gemstone nozzles, such as ruby and sapphire nozzles, are particularly durable due to the hardness of the gemstones themselves, and they can be used for extended periods without becoming worn or expanding the size of the hole. They can also be made with extremely small apertures, providing the smallest and most precise water jet quality. The nozzle angle also affects the cutting effect, and is related to the speed and pressure of the water jet, paper type, weight, and direction. Gemstone nozzles are commonly used in the water jet equipment systems that trim paper rolls to ensure continuous production and maintain stable quality, avoiding the need to stop the production line to replace worn traditional cutting tools and to prevent a decrease in cutting quality.

It is quite difficult to trim the edges of very thin paper using mechanical devices, but high-pressure water jets can easily trim and cut the edges of the moisture-absorbing material. The water jet cutting technology allows for fast and clean cuts of paper.