Hope Plastics Co Inc — Custom Plastic Injection & Blow Molding
Highly-Reliable Molded Plastic Components for Critical Applications
Hope Plastics Co Inc is a full-service custom plastic manufacturer with over 40 years of experience delivering precision injection molding, blow molding, cleanroom medical molding, and rapid prototyping for industries where quality, consistency, and regulatory compliance are non-negotiable. From concept and tooling through production and secondary services, we support every stage of your program.
- ✓ISO 13485 · AS9100D · ISO 9001 Certified
- ✓Tolerances to ±0.001" — medical, aerospace & defense grade
- ✓In-house mold & tool making — faster lead times, lower cost
- ✓Cleanroom Class 10,000 (ISO 7) medical molding facility
- ✓Made in USA — North Hollywood, CA since 1984
CERTIFICATIONS & COMPLIANCE
Certified Quality You Can Trust in Every Part
40Y+
YEARS EXPERIENCE
±0.001
PRECISION TOLERANCES
ALL
MAJOR INDUSTRIES
ABOUT HOPE PLASTICS CO INC
Custom Plastic Injection & Blow Molded Products
Hope Plastics Co Inc is a full-service manufacturer specializing in custom injection molding, blow molding, and precision plastic components for demanding industries. Founded in 1984 and headquartered in North Hollywood, CA, we have spent over 40 years building a reputation for quality, consistency, and on-time delivery.
From part evaluation and rapid prototyping to in-house tool design, mold building, cleanroom production, and secondary services — we support every stage of the manufacturing process. Our certified quality management systems (ISO 13485, AS9100D, ISO 9001) and Class 10,000 cleanroom facility ensure that every part we produce meets the strictest tolerances and regulatory requirements for medical, aerospace, military, automotive, and industrial markets.
As an NMSDC-certified Minority Business Enterprise (MBE) and Small Business Enterprise (SBE), we bring the capabilities of a large manufacturer with the responsiveness and partnership of a dedicated team.
Full-Service Plastic Manufacturing Solutions
From concept to production, Hope Plastics Co Inc delivers precision manufacturing solutions tailored to demanding industries, ensuring quality, consistency, and performance at every stage. View our services below.
3D Printing / Rapid Prototyping
Accelerate your development cycle with FDM, SLA, and SLS rapid prototyping. We produce functional prototypes in days — not weeks — so you can validate designs, test fit and function, and move to tooling faster with fewer costly revisions.
Learn MoreMold / Tool Making
In-house mold design and tool building using CNC machining and EDM. Controlling tooling in-house means faster turnaround, lower cost, and direct engineering collaboration — from single-cavity prototype tools to multi-cavity production molds.
Learn MoreInjection Molding
High-precision thermoplastic injection molding for complex, tight-tolerance components. We run a wide range of engineering resins — ABS, PC, nylon, PEEK, and more — across a broad press tonnage range for prototype through high-volume production.
Learn MoreClean Room Medical Molding
ISO 13485-certified cleanroom injection molding in a Class 10,000 (ISO 7) controlled environment. Designed for medical devices, surgical instruments, diagnostic components, and drug delivery parts requiring strict contamination control and full regulatory traceability.
Learn MoreBlow Molding
Extrusion and injection blow molding for hollow plastic parts — bottles, containers, fluid reservoirs, and custom industrial components. We produce durable, lightweight parts with consistent wall thickness across a wide range of materials and volumes.
Learn MoreLiquid Silicone Rubber Molding
Two-component LSR injection molding for flexible, biocompatible, and heat-resistant components. Ideal for medical seals, gaskets, overmolded grips, and high-performance parts that must withstand extreme temperatures, UV exposure, and repeated sterilization.
Learn MoreIndustries We Serve
Hope Plastics Co Inc partners with leading companies across multiple industries to deliver high-quality, precision-engineered plastic components. Our expertise, advanced capabilities, and strict quality standards ensure every project meets the performance demands of its application.
Start Your Next Project with Hope Plastics Co Inc
Whether you need a rapid prototype, a production-ready mold, or a full cleanroom manufacturing program, our team is ready to help. Get a custom quote tailored to your part requirements, quantities, and timeline — no obligation.