Plastic Injection Parts Manufacturer

Exceeding expectations with quality plastic parts solutions

Plastic Injection Parts Manufacturer

RALLY is a premier Plastic Injection Parts Manufacturer, specializing in producing high-quality, precision plastic injection-molded parts. With a commitment to excellence and innovation, RALLY has established itself as a leader in the industry, catering to a diverse range of sectors including automotive, electronics, healthcare, and consumer goods. Our state-of-the-art manufacturing facilities are equipped with advanced injection molding machines and technologies, enabling us to handle projects of any scale and complexity with unmatched precision and efficiency.

Injection molding

At RALLY, we understand the critical role that precision and quality play in our clients' products and operations. That's why our team of experienced engineers and technicians work closely with clients to design, develop, and manufacture plastic parts that meet the highest standards of quality and performance. From concept to completion, RALLY is dedicated to delivering exceptional service and value, ensuring that every part we produce exceeds our clients' expectations. Whether you need complex components with tight tolerances or high-volume production runs, RALLY is your trusted partner for all your plastic injection molding needs.

Quality Custom Plastic Parts

Rally specializes in delivering quality custom plastic parts, tailored to meet the specific needs of our clients. With a focus on precision, reliability, and innovation, we ensure that every part we produce meets the highest standards of quality and functionality. Our team of experts utilizes state-of-the-art technology and techniques in plastic injection molding to create parts that are not only of superior quality but also cost-effective and durable. Whether you need intricate components for the automotive industry, robust parts for medical devices, or any custom plastic part in between, Rally is your go-to manufacturer, committed to turning your concepts into reality.

How to Make a Mold for Plastic Parts


  • Production Volume: RALLY's facility is designed for both high-volume production runs and low-volume, high-mix orders. This flexibility allows them to serve customers ranging from startups needing prototypes to multinational corporations requiring large-scale production.
  • Prototyping: Rapid prototyping services are available to accelerate product development cycles, enabling clients to test and refine their designs before full-scale production.

Plastic Injection Molding

As a comprehensive plastic injection molding company, we maintain complete in-house oversight of the entire mold construction and injection molding process. This approach not only reduces costs but also places the responsibility for quality squarely on our shoulders, offering you a single point of accountability for the excellence of the final product.

Custom Plastic Molding
Custom Plastic Molding

Our expertise lies in fulfilling custom molded part orders, accommodating quantities from 100 to 100,000 units. Our services extend beyond injection molding, offering complimentary assistance in part design, selection of plastic materials, and cost estimation for both tooling and production phases.

Prototype Plastic Molding
Prototype Plastic Molding

We ensure rapid provision of injection molded prototypes that match production quality standards. This service is designed to minimize design risks associated with production and facilitates timely project progression, especially for projects with tight deadlines.

plastic-injection-mold Design
Design & Engineering

Leveraging our deep understanding of plastic part design, we provide Computer-Aided Design (CAD) services, converting your 2D drawings or sketches into 3D models. These auxiliary services are typically offered at no additional cost to our purchasing clients.

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Injection molded parts manufactured by RALLY

Plastic spray-head
Plastic Auto Parts
Electrical Plastic Parts
Plastic Electronic Housings
Plastic Electrical enclosures
PP Plastic housing
Automotive Plastic Parts
ABS Plastic Electrical enclosures
Auto Plastic Injection Parts
PC Plastic Electronic Enclosure
Plastic Charging Housing
Plastic Injection Parts

Custom Solutions

RALLY distinguishes itself in the plastic injection molding industry by offering custom solutions designed to meet the unique requirements of each customer. Understanding that every project comes with its own set of challenges and specifications, RALLY leverages its expertise, technology, and creativity to provide tailored products that precisely align with client needs. Here’s how RALLY can customize products to suit diverse requirements:

Plastic molding design
Design Support

RALLY begins each project with a thorough consultation to understand the customer's objectives, application needs, and specific challenges. This collaborative approach ensures that the design and engineering teams are aligned with the customer’s vision right from the start. RALLY offers support in part design, material selection, and optimization to create efficient, effective solutions.

Plastic Material Selection
Material Selection

Recognizing that material selection is critical to the performance and longevity of a part, RALLY offers a wide range of materials, including environmentally friendly and specialty plastics, that can meet a variety of application requirements, from high strength to flexibility, and from heat resistance to aesthetics.

Custom Plastic Molding
Mold Fabrication

At the heart of RALLY’s custom solutions is its capability to design and fabricate molds tailored to the specific part being produced. Utilizing the latest in CAD/CAM technology and precision machining, RALLY creates molds that can produce parts with intricate details, complex geometries, and tight tolerances, ensuring the final product meets the exact specifications of the customer.

Plastic Parts Production
Production Capabilities

Whether it's a small batch of prototypes or large-scale production, RALLY's flexible manufacturing processes can adapt to varying volumes without compromising on quality or efficiency. This adaptability allows RALLY to support customers at every stage of their product lifecycle, from initial concept to market.

Quality Assurance

RALLY commits to delivering products of the highest quality. Comprehensive quality control procedures, including dimensional checks, material testing, and functional testing, are implemented to ensure that each custom part meets or exceeds customer expectations and industry standards.

Plastic Injection Parts Assembly
Post-Manufacturing Services

Beyond molding, RALLY offers a range of post-manufacturing services such as assembly, packaging, and logistics support, providing a complete end-to-end solution for customers. These services are customized to fit the specific needs of the project, ensuring a seamless transition from manufacturing to market.

Types of Plastics Used

RALLY utilizes a wide array of plastic materials to cater to the diverse needs of its clients across various industries. These materials include but are not limited to:

PP plastic material
ABS plastic material
PE plastic material
  • Polypropylene (PP): Known for its flexibility, excellent chemical resistance, and toughness, PP is widely used in containers, automotive parts, textiles, and packaging.

  • Acrylonitrile Butadiene Styrene (ABS): ABS combines the strength and rigidity of acrylonitrile and styrene with the toughness of polybutadiene rubber, making it ideal for automotive components, electronic housings, and LEGO bricks.

  • Polyethylene (PE): Available in various densities (LDPE, MDPE, HDPE), polyethylene is known for its resistance to impact, moisture, and chemicals. It's commonly used in packaging, bottles, and piping.

PC plastic material
Nylon plastic material
POM plastic material
  • Polycarbonate (PC): PC is valued for its transparency and exceptional strength and toughness. It's used in bulletproof glass, eyewear lenses, and electronic components.

  • Polyamide (Nylon): Nylon is known for its high strength, temperature resistance, and durability. It's used in automotive components, consumer goods, and industrial equipment.

  • Polyoxymethylene (POM): Also known as Acetal, POM is characterized by its high stiffness, low friction, and excellent dimensional stability, making it suitable for gears, fasteners, and precision engineering components.

PPS plastic material
PET plastic material
  • Thermoplastic Rubber (TPR): TPR combines the characteristics of rubber with the recyclability of plastics. It's used in flexible parts, such as seals, gaskets, and footwear.

  • Thermoplastic Polyurethane (TPU): TPU is known for its elasticity, oil and grease resistance, and abrasion resistance. It's used in automotive instrument panels, caster wheels, and medical devices.

  • Polystyrene (PS): Available in general-purpose polystyrene (GPPS) and high impact polystyrene (HIPS), PS is used in disposable cutlery, CD cases, and insulation.

  • Polyethylene Terephthalate (PET): PET is widely used in food and drink packaging due to its strength, thermo-stability, and clarity.

  • Polyphenylene Sulfide (PPS): PPS offers exceptional heat resistance, chemical resistance, and dimensional stability, making it suitable for high-temperature applications in the automotive and electronics industries.

  • Have questions? Our experts are here to help.

Plastic Injection Part Surface Finishes

Plastic injection molding parts often require finishing processes to enhance their appearance, surface quality, or mechanical properties. These finishing techniques can range from basic trimming and painting to more complex surface treatments. Here's an overview of common finishing processes for plastic injection molding parts:

Metal Surface Finishing: Chrome plating of plastic parts
Plastic Parts Painting Coating
Plastic Parts Painting Surface Finish
Plastic Parts Plating surface finish
  • Trimming and Deburring: The removal of excess material (flash) from the edges of molded parts. This can be done manually or using automated processes to ensure a smooth, clean finish.

  • Painting and Coating: Applied for aesthetic purposes or to add a protective layer against environmental factors. Painting can also be used to add logos, labels, or other decorative elements. Coatings might include UV protective layers, anti-scratch, or anti-corrosion properties.

  • Plating: A process that involves depositing a layer of metal onto the plastic surface to improve appearance, conductivity, or resistance to corrosion. Chrome plating is a popular choice for decorative parts.

  • Polishing: Enhances the surface finish of the plastic parts to achieve a glossy appearance. This can be done mechanically or chemically, depending on the desired level of gloss and the material properties.

  • Laser Engraving: Used to add precise and permanent markings, such as serial numbers, logos, or other identifiers. Laser engraving can achieve high levels of detail without affecting the structural integrity of the part.

  • Printing: Techniques such as pad printing or silk screening are used to apply detailed graphics, text, or patterns directly onto the surface of molded parts. This is commonly used for branding or labeling components.

Plastic parts laser marking surface finish
Plastic Parts Laser Surface Finish
Plastic Parts Pad Printing Surface Finish
Plastic parts laser marking LOGO
  • Hot Stamping: A dry printing method where pre-dried ink or foils are transferred to the surface of a part under high temperatures and pressure. It's often used for adding high-quality, decorative elements.

  • Ultrasonic Welding: Used to join plastic parts together or to embed metal parts into plastic. This process uses high-frequency ultrasonic acoustic vibrations to create a solid-state weld.

  • Surface Texturing: Achieved through techniques like sandblasting or chemical etching, surface texturing is used to create matte, patterned, or rough surfaces on the part for aesthetic or functional purposes (e.g., improved grip).

  • Heat Treatment: Some plastic parts may undergo heat treatment to relieve internal stresses or to improve dimensional stability.

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Why choose injection molding for your plastic part production?

Versatility in Design and Complexity

Injection molding allows for the production of parts with complex geometries and intricate details that might be challenging or impossible to achieve with other manufacturing processes. This versatility enables designers to create parts tailored to specific requirements without significant limitations on shape or size.

High Efficiency and Scalability

The injection molding process is highly efficient, capable of producing a large number of parts in a relatively short amount of time once the mold is created. This efficiency makes it ideal for mass production, ensuring that large volumes can be manufactured quickly and consistently, which is particularly beneficial for meeting tight deadlines and managing costs at scale.

Superior Part Strength and Durability

Injection molding techniques allow the use of fillers in the injection molds, which can enhance the strength and durability of the parts. These fillers reduce the density of the plastic while being molded and can add greater tensile strength to the parts, making them more robust and durable for their intended applications.

Cost-Effectiveness for High Volume Production

While the initial cost of creating a mold can be significant, the per-unit cost of production is relatively low, especially for high-volume orders. This cost efficiency improves as the production volume increases, making injection molding an economically viable option for large-scale manufacturing.

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Various Industries RALLY Serves

RALLY, a distinguished leader in the plastic injection molding industry. Below is an introduction to the diverse range of industries RALLY serves, highlighting the company's adaptability and specialized knowledge in each domain.

Plastic Injection Parts Aerospace Industry


Serving the aerospace and defense sectors, RALLY produces high-strength, lightweight components that meet the exacting standards of these industries. The company's expertise in advanced materials and precision engineering ensures that these critical parts perform flawlessly under extreme conditions.

Plastic Injection Parts Automotive Industry


RALLY excels in producing high-quality, durable plastic components essential for modern vehicles. From intricate interior parts like dashboard panels and buttons to exterior components such as bumpers and light housings, RALLY's precision molding processes meet the rigorous standards of the automotive sector, ensuring safety, aesthetics, and functionality.

Plastic Injection Parts Packaging Industry


Catering to the packaging industry, RALLY designs and manufactures innovative packaging products, including caps, closures, containers, and other custom packaging solutions that offer functionality and enhance brand value, all while ensuring product safety and integrity.

Plastic Injection Parts Medical Industry


In the critical field of medical devices and healthcare products, RALLY offers unparalleled expertise in manufacturing parts that meet strict hygiene and safety standards. The company produces components for diagnostic devices, surgical tools, and medical equipment, utilizing FDA-approved materials and maintaining the highest level of cleanliness and precision.

Plastic Injection Parts Toy Products

Toys Products

RALLY brings ideas to life in the toys and recreational market, creating products that are not only fun and engaging but also safe and durable. From action figures to sports equipment, RALLY's innovative solutions cater to the unique demands of this dynamic industry.

Plastic Injection Parts Consumer Electronics Industry

Consumer Electronics

RALLY's capability to work with high-performance plastics makes it a preferred choice for the consumer electronics industry. The company manufactures components for smartphones, tablets, laptops, and other electronic devices, where precision, durability, and aesthetic appeal are paramount.

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FAQs on Plastic Injection Molding

General Questions:

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