Web Width Measurement and Monitoring
Measuring the width of the web (or the cross-machine dimension of the web) is essential for various converting applications. Web width measurement is crucial for quality control and web handling purposes. Some examples of converting processes requiring width measurement include:
We are really grateful for our customers who support us by purchasing our products.
2020 and 2021 have been tough for all but we are really appreciative of the confidence and trust our customers place on us everyday. We are seeing high demand for our products, especially those high end products that provide significant value for our customers. Fortunately we have been able to deliver them with minimal delays. We are blessed to be in this position and we look forward to another record year in 2022.
What are Terminal Web Guides?
Terminal web guides are devices used at the entry and exit of a roll-to-roll machine to appropriately align the web to the desired cross machine location. Entire roll of the web, on the unwind/rewind stand, is moved along the cross-machine direction for the proper alignment.
Different terms related to web guiding are discussed in this article.
Web Guiding
Web guiding is the process of regulating the cross machine position of the web while the web is transported over the rollers in roll-to-roll processing machinery. Other terms for web guiding include:
Web
Web is a material that is thin, flexible and continuous in nature. Web materials are transported within a machinery to convert them into finished products. A wide variety of consumer products are made from web materials such as paper, plastics, films, foils and metals, into finished products such as diapers, female hygiene products, labels, tapes, magazines, aluminum cans, and even some electronics.
What are Pneumo-Hydraulic Web Guides?
Many displacement guides, steering guides, unwind / rewind guides manufactured in the 1960’s, 1970's, 1980’s and 1990's were controlled using both pneumatic and hydraulic control systems which are often referred to as pneumo-hydraulic web guides. These web guide were really common before the mass adoption of the electronic (analog and digital) controllers and electric actuators.
Web materials are not perfect, and neither are converting machines. Web guides are needed to reduce waste due to web misalignment.
Web Guiding Principles
Video courtesy of Jerry Brown at normalentry.com