How are the huge rolls of paper that weigh hundreds or even thousands of pounds when they leave the paper mill, converted into manageable sizes for use in manufacturing?
The answer is that the paper converting industry uses several different types of paper converting machines to “convert” these large parent paper rolls from the paper mill into a wide range of smaller sizes for use in many processes including sheeting, coating or treating the paper as well as more complex operations that include printing, folding, gluing, laminating and binding.
The result is the creation of anything from the rolls used in cash machines and ATMs, through newspapers, books and magazines to products that need to be cut, folded and glued, such as packaging cartons, envelopes and paper bags.
Types of Paper Converting Machinery
There are two basic types of machine for converting the large “master” or “parent” rolls of paper into smaller rolls:
Slitter / Rewinder
Slitter / Rewinders, unwind the large rolls of raw paper material so that they can pass through a Slitter Rewinder and be cut into several strips of the right width for the product or products required before being rewound onto new cores. This type of machine, often called a roll converting machine can have varying levels of automation. There are many different manufacturers of slitter / rewinders but the technology has been around for nearly 100 years. (Google Patents – Slitter Rewinder)
Precision Paper Roll Saw
This machine can cut the huge master rolls without the need for unwinding and rewinding. It can cut the paper cleanly, providing a excellent finished roll quality at an economical price. This type of paper converting machine can be used to quickly resize rolls when changes to the cores size is not required. These paper rolls can then be used for making products such as printed books and magazines. The trade name synonymous with a precision paper roll saw is RollRazor. The technology is relatively new to the converting market and has only been around for about 10 years. This short video demonstrates how the machine works.
You can find out more about this technology at http://rollrazor.com.
Paper Products Made On Paper Converting Machinery
The roll converting machines mentioned above are very versatile, producing manageable, small core rolls for a variety of applications.
There are also highly specialized machines, designed for making other products:
• Cartons, boxes, packaging materials, paper bags and envelopes are made on paper converting machines that are capable of cutting, folding and gluing.
• Paper cups, food cartons and disposable paper plates and bowls are made on paper converting machinery that can press paper into the required shape.
Many of the operations are quite complex but can turn out products as diverse as paper towels and baby diapers.
Paper Converting and the Paper Industry
According to Economy Watch website, a leading source of data and analysis of Industry in many sectors across the Globe, the US Paper making industry is huge, currently worth around $400 billion but capable of generating $850 billion per annum and with the potential for employment for almost 9 million employees. The scale of the Industry helps us to understand the value and importance of the different types of paper converting machine for manufacturers.