If you are looking for the experts in thermoplastics, injection molding, Six Sigma, and open book management, we have the team assembled and ready for any project you have. IVP Plastics has more than 80 employees at our two locations in St. Louis, Missouri and Washington, Illinois. Our highly skilled team consists of process engineers, material specialists, industrial technologists, toolmakers, and highly skilled craftspeople who are the leaders in our industry.

When it comes to thermoplastic know-how and capabilities, our employees have over one hundred combined years in engineering, plastics design and manufacturing experience under our belts. IVP Plastics is ready to provide this expertise and knowledge to your manufacturing project through a cooperative partnership that will allow us to boost your production capabilities. Let us work for you by providing the desired thermoplastic components and assemblies for your manufacturing processes and end products.

View our team bios below

Dirk Arends, Sales and Business Development Manager
Sabrina Arrick, Quality and Continuous Improvement Manager
John Bernius, Controller
Rebecca Berry, Customer Service
Connie Camp, Customer Service
Joe Camp, Engineering Manager
Kim Diaz, Customer Service
Randy Gelsthorpe, Tooling Manager
Matt Lang, Sales Manager
Daryl Lindemann, President & CEO
Troy Olsen, Product Engineer
Bob Seals, General Manager
Tom Williams, Operations Manager
Norah Julmis, Communications & Brand Manager
Lydia Miller, Human Resources Manager


Dirk Arends
Sales and Business Development Manager

Dirk is responsible for Sales and Business Development for IVP Plastics. He holds a bachelor’s degree in business administration from Illinois Wesleyan University and an MBA from Bradley University in Peoria, Illinois. Dirk brings over 15 years of experience in leading sales organizations in injection molding and sheet metal fabrication.

Sabrina Arrick
Quality and Continuous Improvement Manager

Sabrina is responsible for leading and supporting quality improvement initiatives by ensuring customer requirements have been accurately identified and that IVP is meeting or exceeding customer expectations. She has over 15 years of engineering and quality experience. Sabrina holds a bachelor of science degree in Mechanical Polymer Engineering from The University of Akron.

John Bernius

John is responsible for all accounting and information technology functions. He holds a bachelor’s degree in accounting from Bradley University.

Rebecca Berry
Customer Service

Rebecca has over 12 years of customer service experience and has previously served as a TWA international flight attendant and Homeland Security customer service instructor. Rebecca has provided “Super Service” to our St. Louis facility customers for over 8 years.

Connie Camp
Customer Service

Connie works with our customers to ensure accurate order entry and answer questions. With 30 years of customer service experience, she’s committed to making sure our performance exceeds your expectations.

Joe Camp
Engineering Manager

Joe supports and prepares quotations for product, process and tool development. He has more than 30 years of experience in metal and plastic manufacturing and design engineering and holds a bachelor’s degree in industrial technology from Western Illinois University.

Kim Diaz
Customer Service

Kim is often the first voice or face you’ll experience at IVP Plastics. She brings 25 years of office management and customer service experience to the job, assisting with orders, answering questions and ensuring satisfied customers.

Randy Gelsthorpe
Tooling Manager

Randy manages the tooling operations at our Washington facility. This includes all tool quotes, mold design reviews and tracks tool build progress at our tooling suppliers and manages our in plant tool room operations. He strives for the highest quality tool at the most economic price for both our customers and IVP. His experience spans has over 40 years in the tool and die trade.

Matt Lang
Sales Manager

Matt provides strategic direction for our St. Louis sales and marketing team, with a focus on sales management and customer development. He has more than 20 years of experience in all aspects of plastics processing.

Daryl Lindemann
President & CEO

Daryl develops strategic plans to advance our mission and objectives—overseeing overall efficiency, quality, customer service, cost management and employee engagement. Prior to joining IVP Plastics, he served as CFO for Morton Industrial Group and Coulter Companies. A CPA, Daryl holds a bachelor’s degree in accounting from the University of Illinois.

Troy Olsen
Product Engineer

Troy designs components and systems for injection molding, automation and assembly. He holds a bachelor’s degree in manufacturing engineering technology from Illinois State University.

Bob Seals
General Manager, St. Louis

Bob is the General Manager of the St. Louis facility. He has more than 20 years of experience in operations management, product development, quality and regulatory compliance. His experience in the industrial and medical industries includes manufacturing of metals & plastics.

Bob earned a bachelor’s degree in mechanical engineering from Missouri University of Science and Technology and a master’s degree in business administration from Washington University. He is a certified Six Sigma Black Belt.

Tom Williams
Operations Manager

Tom helps develop strategy and monitors progress in customer service, human resources, information services, purchasing and production planning. He has over 20 years of engineering, quality and manufacturing experience. Tom holds a bachelor’s degree in industrial technology from Illinois State University and has his master’s degree in business administration from Bradley University.

Norah Julmis
Communications & Brand Manager

Norah is responsible for marketing, publishing IVP’s bimonthly newsletter and designing sales collateral. She holds a bachelor’s degree in advertising and public relations with a business minor in marketing from the University of Tampa.

Lydia Miller
Human Resources Manager

Lydia is responsible for all Human Resources activities, including safety, hiring, training, and benefits administration. She holds two bachelor’s degrees from Millikin University and Illinois State University and brings five years of Human Resources experience to IVP Plastics.