Plastic production has been one of the most transformative forces in modern manufacturing. From the early days of simple polymers to today’s highly engineered materials, plastics have become a vital part of nearly every industry. The evolution of plastic manufacturing in USA reflects not only technological innovation but also the nation’s commitment to quality, sustainability, and efficiency. Early Beginnings of Plastic Manufacturing The story of plastic production in America began in the late 19th century, with the invention of celluloid and Bakelite. These early plastics were revolutionary — lightweight, versatile, and inexpensive alternatives to natural materials like wood, ivory, and glass. As industrialization spread across the U.S., so did the need for durable materials that could be mass-produced. This demand laid the foundation for the growth of plastic manufacturing in USA , giving rise to a new era of design and production possibilities. During World War II, plastics...
For mass production of parts, plastic injection molding is a very cost-effective way but sometimes the best designs have faulted by the Injection Molding Manufacturers and their consequences show in quality defects. To troubleshoot and identify them, it is essential to be familiar with these defects. So, here we will discuss about top 5 most common quality defects in injection molding: 1. Weld lines: A weld line refers to a mark, line, or color change that is made on the molded element caused by the meeting of two split flows of molten plastic. This happens wherever there is a mark, hole, or any other element on a piece that separates the flow of plastic into two distinct “flow fronts”. As these flow fronts come jointly on the other side of a given component, similar to a parting line mark. At the mark where the two flows reconnect there is insufficient interfusing of the plastic, maybe because limited molecules and cooling are not oriented in the same direction of the flow path. ...