Molding Machine
Surface Finishes
MOQ
Tolerances
Dive into GRP’s extensive gallery that showcases some of our completed injection molded parts and take confidence that we can create your injection molding project according to your strict specifications.
Experience Innovation in Injection Molding with GRP! Transform your projects with our custom injection molds tailored to your specs. At GRP, we dive deep into your project’s nuances, crafting precise mold designs to ensure success. Let our expert technicians handle all complexities – your success, our commitment!
Unleash the power of versatility with GRP! From prototype tools to production molds, we offer affordability without compromising quality. Our optimized processes and rapid lead times ensure your products hit the market faster. Ready to elevate your plastic part production? GRP is here to guide you every step of the way!
Dive into a world of options with GRP! We provide a wide range of injection mold tooling to suit your specific needs and applications. From prototype mold tooling to production and export molds, GRP is your trusted ally. Partner with us and experience reliability at its finest!
Prototype Tooling
Volume Tooling
Experience easy design validation with top-notch prototype tooling. Create small batches of plastic parts with excellent injection molding prototypes. We specialize in manufacturing prototype molds swiftly, enabling functional tests and market validation. Our affordable aluminum tooling reduces financial risks before full-scale production
We specialize in crafting top-tier production molds for high-volume plastic parts production. Utilizing durable, high-strength tool steel, our production tooling is apt for hundreds of thousands of parts. We customize materials and methods to your requirements
2K molds:Unlock precision with GRP’s 2K injection molds. Ideal for two-component molding, ensuring seamless integration of materials in one process. Achieve complexity and superior quality effortlessly.
Inserted Molds: Optimize production with GRP’s inserted injection molds. Designed for embedding inserts into molten plastic, our molds ensure precision, strength, and durability in every part. Enhance functionality and reduce assembly time effortlessly.
Over Molds: Achieve multi-material parts with GRP’s over injection molds. Expertly designed for molding a layer of material over another, ensuring optimal adhesion, functionality, and aesthetics in a single step. Simplify complex processes effortlessly.
Gas assist Molds: Maximize efficiency with GRP’s gas assist injection molds. Designed to inject gas into molten plastic, our molds reduce weight, warpage, and sink marks, while enhancing strength and surface finish. Achieve superior quality parts effortlessly.
Single Cavity Mold: Experience precision with GRP’s single cavity injection molds. Designed for producing one component per cycle, our molds ensure consistent quality, optimal cycle times, and cost-efficiency. Ideal for low to medium volume production needs.
High Precision Tolerance Mold: Achieve unparalleled accuracy with GRP’s high-precision injection molds. Engineered for tight tolerances, our molds ensure consistent, intricate parts with superior surface finish. Ideal for complex, critical applications demanding utmost precision.
Multi Cavities Injection Molds: Boost productivity with GRP’s multi-cavity injection molds. Engineered for producing multiple parts per cycle, our molds optimize cycle times, reduce costs, and ensure uniform quality across high-volume productions. Ideal for maximizing efficiency.
Unscrewing Molds: Experience ease with GRP’s unscrewing injection molds. Designed for producing parts with external or internal threads, our molds ensure precision and efficiency in every cycle. Ideal for complex, threaded components demanding high accuracy.
Request an instant quote and our engineers will deliver it within 24 hours to kickstart production. Fast, efficient, and ready to serve your needs.
Our design-for-manufacturing review identifies defects or concerns early on, providing recommendations for a more feasible and efficient design.
Our predictive modeling software visualizes molten material behavior inside the mold, enabling design improvements for optimal performance.
We utilize high-quality CNC machining to construct sophisticated injection molds, submit progress report to customer each week to guarantee the project going smoothly.
Post mold tooling, we conduct a trial with a sample mold to ensure accurate dimensions for your required molded parts. Precision guaranteed.
After the first sample, we will address any issues, provide solutions, and make necessary improvements to ensure optimal results.
We inspect all mold components and packaging before shipping to ensure everything is in perfect order. Your satisfaction, guaranteed.
We will do the package according customer's shipping way. The project may be finished, but our after-service is just beginning. We're here for you, every step of the way.
We design and create precise custom injection molds from top-grade materials, ensuring unmatched consistency and repeatability with fast lead times and affordable pricing. All molds meet international standards. Whether it’s a one-off project, small batch, or production tooling, we deliver durable, reliable mold tools for every need.
Mold Class
Purpose
Mold Life
Tolerance
Lead Time
SPI 105
Prototype Tool
Less than 1,000 shots
+-0.02mm
5-7 days
SPI 104
Low-volume Production
Less than 10,000 shots
+-0.02mm
7-10 days
SPI 103
Low-volume Production
Less than 50,000 shots
+-0.02mm
10-15 days
SPI 102
Medium-volume Production
Less than 1,000,000 shots
+-0.02mm
10-16 days
SPI 101
High-volume Production
More than 1M shots
+-0.02mm
15-25 days
Selecting the right material is crucial for mold longevity and part quality. We offer various material grades for different development stages. Our experts choose the appropriate materials for the required precision and aesthetics and provide professional advice on mold materials.
Before injection molding process starts low or high-volume production, a high tolerance CNC machined tooling is needed. Most commonly used materials include:
Tool Steel: P20, H13, S7, NAK80, S136, S136H, 718, 718H, 738
Stainless Steel:
420, NAK80, S136, 316L, 316, 301, 303, 304
Aluminum: 6061, 5052, 7075
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Plastic injection molding service comes with a wide range of materials with different properties, including impact strength, rigidity, thermal resistance, chemical resistance, etc.
| ABS | Nylon (PA) | PC | PVC |
| PU | PMMA | PP | PEEK |
| PE | HDPE | PS | POM |
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Experience the efficiency of aluminum molds in your injection molding process. Not only are they significantly more cost-effective than traditional steel and carbon steel options, but they also provide an edge with their rapid cycle times. This advantage allows for speedy market testing and quicker turnarounds, ensuring your project stays on track and within budget. Choose aluminum molds for a smart, economical solution in your manufacturing workflow
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The words of a customer hold greater weight than a company’s assertions. Discover firsthand accounts from our satisfied customers, sharing how we met their specific needs and exceeded expectations.
GRP’s plastic injection molding service is perfect for addressing the various demands of different industries, including the automotive, medical, and consumer goods fields.
A plastic injection mold is a specialized tool used in the manufacturing process of plastic parts. It consists of cavities and cores that define the shape of the final product. Molten plastic material is injected into the mold, cooled, and then ejected to produce the desired plastic components.
Steel and aluminum are the primary materials used for making plastic injection molds. Steel molds, such as P20 and H13, are preferred for their durability and suitability for high-volume production. Aluminum molds are chosen for faster cycle times and enhanced heat transfer, suitable for prototyping and low-volume production.
The time required to manufacture a plastic injection mold can vary based on complexity, size, and design requirements. Simple molds might take a few weeks, while more intricate molds could take several months. Factors such as mold design, material availability, and manufacturing processes contribute to the timeline.
The cost of a plastic injection mold is influenced by factors like mold complexity, size, material selection, mold life expectancy, and design modifications. High-quality materials, intricate designs, and tight tolerances can increase the cost. It's essential to balance cost with long-term production benefits.
Regular maintenance is crucial to extend the life of a plastic injection mold. Proper cleaning, lubrication, and inspection of the mold components help prevent wear and tear. Minimizing excessive heat and pressure during injection also contributes to prolonging mold life. Collaborating with experienced moldmakers for maintenance is recommended.
Explaining the advantages of aluminum molds, such as cost-effectiveness, faster cycle times, and their impact on market testing.
Tips on design, material selection, and processing parameters that can enhance the durability of the final product.
