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Custom Plastic Injection Molding Excellence

Family-owned since 1953 | 99% on-time delivery | 3 billion parts shipped annually

MedAccred Accredited Injection Molder IndustryWeek Best Plants Award Winner Made in America 112 Presses | 300+ Employees

Trusted Partner in Precision Molding Since 1953

A1 Plastics (formerly Hoffer Plastics) is a family-owned and operated leader in custom plastic injection molding. With over 70 years of experience, we deliver high-quality, precision-molded components to industries ranging from medical and packaging to automotive and consumer goods.

We go ALL IN to help our customers WIN — from concept and design to prototyping, production, and delivery. If you can conceive it, we can mold it.

99%
On-Time Delivery
3B+
Parts Shipped Annually
112
Injection Presses
300+
Team Members
A1 Plastics Manufacturing Facility

Our Product Lines

From simple components to highly complex multi-cavity designs, we deliver innovative, high-performance plastic parts across diverse industries.

LOK Family Closures

Trust-T-Lok™ and Drop-Lok™ patented closures for flexible pouches and rigid containers. Strong seal integrity, tamper-evident, ideal for food, personal care, and medical packaging.

Flexible Packaging Components

High-performance parts for squeezable baby food pouches, beverage dispensers, and flexible packaging systems. Engineered for durability and leak resistance.

Rigid Container Parts

Precision-molded components for rigid containers, including caps, lids, and structural parts used in industrial, consumer, and medical applications.

Medical Device Components

MedAccred-accredited manufacturing of critical medical parts. Cleanroom molding, strict compliance, and full traceability for life-saving applications.

Automotive Components

Durable, high-tolerance parts for carburetors, interior systems, sensors, and under-the-hood applications. Built to withstand extreme conditions.

Consumer & Appliance Parts

Components for blenders, dishwashers, speakers, and small appliances. Designed for performance, aesthetics, and long-term reliability.

Custom Multi-Cavity Molds

Complex, high-efficiency molds for mass production. Optimized for speed, consistency, and minimal waste.

Sustainable Biopolymer Parts

Pioneering use of biodegradable and recyclable resins. Environmentally responsible solutions without sacrificing performance.

Industrial Components

Robust parts for industrial equipment, including housings, gears, and connectors. Engineered for longevity and operational efficiency.

Tamper-Evident Packaging

Secure closure systems that provide visible evidence of interference. Critical for pharmaceuticals, food safety, and consumer trust.

Prototype & Low-Volume Runs

Rapid prototyping and bridge tooling to accelerate time-to-market. Ideal for startups and product validation.

Value-Added Assemblies

Complete sub-assemblies including ultrasonic welding, insert molding, labeling, and packaging. Reduce your supply chain complexity.

Our Core Services

Full-service injection molding partner from design to delivery.

Injection Molding

112 presses from 28 to 780 tons. High-speed, precision molding with full process control.

Tooling

In-house tool design and fabrication. Rapid turnaround, high-precision steel and aluminum molds.

Engineering

Design for manufacturability, mold flow analysis, material selection, and full technical support.

Value-Added Assembly

Ultrasonic welding, labeling, packaging, and kitting services to streamline your supply chain.

A Focus on Sustainability

Sustainability has been central to our values since 1953. We are proud recipients of the 2016 Illinois Governor's Sustainability Award and longstanding executive members of the Plastics Environmental Council.

  • Pioneers in onsite power co-generation
  • Active pursuit of biodegradable and recyclable resins
  • Zero-landfill initiatives and waste reduction programs
  • Energy-efficient manufacturing processes
Sustainable Manufacturing at A1 Plastics

What Our Clients Say

"Hoffer is a much appreciated partner, that understands how they can help us prosper in a competitive market. The product quality consistently meets our high standards, topped off by an outstanding service from a flexible and most efficient organization."

Marc Latreille
Sales & Marketing Director | Vergers Leahy Inc.

"Hoffer Plastics is a true expert partner to us, which has allowed Yumbutter and Tribe 9 to continue being a leader in pouch innovation across the nut butter industry and beyond. They are a delight to do business with."

Matt D’Amour
Chief Wellness Officer | Yumbutter and Tribe 9 Foods

Join Our Team

Break the mold. Build your career at a family-owned company that values innovation, integrity, and community.

Warning: A1 Plastics will never ask for payment or equipment purchases as a condition of employment. Messages from "hiring@hofferplastics.team" are fraudulent and not affiliated with our company.
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Get in Touch

Ready to bring your next project to life? Let’s discuss how we can help.

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