In 1979, L&M Corrugated Container was established in Zion, Illinois by Dick Lopes, an experienced industry executive who had worked at a large Chicago packaging firm.

Over the years, our family-operated business has grown significantly, outfitting new facilities with high-tech equipment, adding loyal clients, and winning acclaim and respect along the way. Steve Lopes, the founder’s son, is the present-day president/CEO. And his son Steven also holds a leadership role.

Currently, L&M operates two Wisconsin plants, located in Platteville and Pleasant Prairie, which run daily routes to Chicago, Milwaukee, Dubuque, and Madison with stops all across Northern Illinois and Southern Wisconsin.

We convert more than 30 million sq. ft. of corrugated packaging every month. Our workforce includes more than 95 trained employees who are passionate about packaging.

At L&M, our customers come first. You’ll find a can-do, whatever-it-takes spirit is part of our corporate culture. We treat every customer, big or small, with utmost respect and concern. Our core values include integrity, honesty, hard work, and respect. We are dedicated to producing a high quality product. And we are committed to continuous improvement and innovation.

L&M Corrugated Container

“We are passionate about packaging. As a leader in technology, efficiency, and customer service, we are your best choice. We’re family owned, forward-thinking, and do whatever it takes.”  -Steve Lopes, President


In 1979, L&M Corrugated Container was founded in Zion, Illinois. With industry experience and an entrepreneurial spirit, Dick Lopes started a company that has since tripled in size. His son, Steve, is currently at the helm.

  • We convert more than 30 million sq. ft. of Corrugated every month
  • In 2013, we moved the Zion office north to a state-of-the-art facility in Pleasant Prairie, Wisconsin; we have another high-tech plant in Platteville, Wisconsin
  • We have been family-run for three generations
  • Packaging is our passion — and we do it well
  • Our clients include Fortune 500 companies as well as small independent businesses
  • We craft complex custom-made containers as well as simple boxes — and everything in between
  • This is a company built on tradition — a strong foundation—that puts our customers’ needs first

L&M is committed to high standards in product, customer service, safety, strategic planning, training and more. We are ISO 9001-certified and a “whatever it takes” mentality prevails at every level.

  • Nominated in 2013 for Wisconsin Manufacturer of the Year
  • We consistently achieve positive sales figures and continue to add new customers
  • We provide service and quality products that exceed customer expectations
  • With solid leadership and an outstanding reputation, we work in a safe, clean modern environment where excellence is rewarded


  • Trust, Integrity, Honesty, and Respect
  • We hold ourselves Accountable
  • We care about our People and their Safety
  • We care about our Customers
  • Quality Products
  • Innovation/Commitment to continuous improvement
  • Passionate
  • Employees take Ownership


To maximize our value through Innovation, Quality, and On Time Delivery, with a commitment to comply with applicable requirements and the continual improvement of the Quality Management System.


We do everything quickly, confidently, and cost-effectively. With the best turnaround time in the business and a 99% on-time delivery rate, we provide customers with what they want, when they want it.

  • Dedicated and well-trained, our staff knows how to run the machines with expertise and finesse
  •  New L&M equipment includes a specialty folder gluer and a flat bed die-cutter
  • Our investment in innovation keeps us ahead of the game
  • Our safe workplace keeps us on the job without injuries and lost time. We are voluntarily OHSA compliant and will soon be certified by SHARPS (Wisconsin’s Safety & Health Achievement Recognition Program.)

Our tagline and our brand promise is this: “What you want. When you want it. Packaging made simple.” And that says it all. At L&M, we offer you more than packages and boxes – we offer a convenient, easy, satisfactory customer experience.

  • We are customer-focused and deadline-driven
  • You’ll find our prices are competitive and budget-friendly
  • Every customer is treated with courtesy and care
  • Place an order the way you prefer – via phone, email, fax or our website
  • Our in-house designers can take the project from idea to final package
  • We do whatever it takes
  • Whether your job is big or small (our minimum order is 1), we will exceed your expectations.
  • Our Customer Portal allows you 24/7 access to L&M. You can order online, view your order status, track your shipment, and check your warehouse inventory.