Custom Plastic Injection Molding Company China Mucision
Custom Plastic Injection Molding Company China Mucision
Custom Plastic Injection Molding Company China Mucision

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Custom Plastic Injection Molding Services

Obtain custom plastic molded prototypes and production parts within just five business days. Take advantage of our expert engineering reviews and enjoy a $500 discount on your initial mold. Choose from a wide array of materials and finishes to meet your specific project requirements.

What is Injection Molding?

For cost-effective large-scale plastic part production, injection molding is the optimal solution. The process involves injecting molten plastic into a mold tool, then removing the solidified part. This rapid cycle can repeat hundreds or thousands of times, amortizing the mold tool cost and reducing unit costs to a few dollars or less. Since each part uses the same mold tool, injection molding ensures uniform quality across every part. Moreover, it offers the broadest selection of materials, colors, cosmetics, polishes, and surface textures compared to CNC machining and 3D printing.
Mucision’s custom plastic mold service delivers on-demand prototype and production molding tailored to your requirements. Our customer-centric approach ensures we identify the best injection molding supplier within our manufacturing network, producing parts that meet your exact specifications without design compromises, at a competitive price. We offer expert guidance for each injection mold quote and dedicated project managers for every order, streamlining the process from design to production. Our experienced team specializes in various industries, including medical injection molding and liquid silicone rubber molding.
Custom Plastic Injection Molding Company China Mucision
Custom Plastic Injection Molding Company China Mucision
Custom Plastic Injection Molding Company China Mucision

Injection Mold Tooling

Crucial for mass production, involves machining, and assembling durable molds from steel or aluminum to ensure precise and repeatable part geometries.

Overmolding

Overmolding improves product functionality and aesthetics by fusing different materials into one part, adding features like soft grips and multi-color designs for enhanced usability

Insert Molding

Insert molding combines metal or other materials into plastic parts during the process, improving strength and streamlining assembly for parts with embedded features.

Injection Molding Capabilities

Feature Tip
Lead Time Starts at 5 business days, including fast quote responses with design-for-manufacturing (DFM) feedback
Production Options Domestic and international
Materials Most plastics, including custom sourcing and matching; see materials list below
Machines Available Single, multi-cavity, and family molds; 50 to 1,100+ press tonnage; side actions including hand-loaded cores.
Inspection and Certification Options Includes FAI and PPAP. ISO 9001, AS9100, ISO 13485, UL, ITAR, and ISO 7 and 8 Medical Clean Room molding.
Tool Ownership Customer-owned with mold maintenance
Mold Cavity Tolerances +/- 0.005″ when machining the mold and an additional +/- 0.002″ per inch when calculating for shrink rate
Part to Part Repeatability +/- 0.004″ or less
Critical Feature Tolerances Tighter tolerances can be requested and may increase the cost of tooling because of additional sampling and grooming. Xometry will mill to a steel-safe condition on critical features.

For design-for-manufacturing recommendations in detail, please contact our customer service.

How does it work?

The plastic injection molding process involves an injection molding machine, raw plastic material, and a machined mold. The machine melts the raw plastic material and injects it into the mold—typically made from steel or aluminum—where it solidifies into the final part.
At Mucision, we review your plastic injection molding quote, consult with you to meet your specifications, lead time, and budget, then use your 3D part data to precision machine a high-quality injection mold. After creating molded parts, we send samples (T1) for approval. Once the mold is refined and approved, production begins. Mucision molds diverse products and parts, ranging from small medical inserts to large automotive, aerospace, and defense components.

Custom Plastic Injection Molding Company China Mucision

Why Choose Mucision for Custom Injection Molding?

Boundless Options

Select from an extensive range of material, finish, tolerance, marking, and certification combinations to customize your order.

User Friendly

Enjoy convenient, hassle-free delivery of your parts directly to your doorstep, eliminating sourcing, project management, logistics, and shipping concerns.

Enriched Network

We are ISO 9001:2015, ISO 13485, IATF 16949:2016, and AS9100D certified.

Custom Plastic Injection Molding Company China Mucision

 Material Selection

Rigid Plastic Materials

  • ABS (acrylonitrile butadiene styrene)
    High-strength general-purpose engineering plastic, used for many commercial products.
  • ASA (acrylonitrile styrene acrylate)
    A material very similar to ABS with higher resistance to fading and better suited for outdoor use.
  • CA (cellulose acetate)
    Typically used in eyeglasses and film, CA is a flexible clear material that can be used in food contact.
  • HDPE (high-density polyethylene)
    Excellent strength-to-weight ratio and chemical resistance. It is often used for fuel tanks, connector insulators, and food containers. HDPE is also used in outdoor equipment like playgrounds.
  • LCP (liquid crystal polymer)
    LCP has mechanics even at elevated temperatures as well as low dielectric constants. This material provides exceptional features for micromolding and thin walled components. LCP is popular for electrical connectors and interconnects as well as medical devices.
  • LDPE (low-density polyethylene)
    A flexible and tough material with lower density versus HDPE. LDPE does not react to acids, bases, or alcohols. Useful for trays, snap lids, and general-purpose containers.
  • PA 6 (polyamide 6, nylon 6)
    Offers increased mechanical strength, rigidity, good stability under heat, and/or chemical resistance.
  • PA 6/6 (polyamide 6/6, nylon 6/6)
    Offers increased mechanical strength, rigidity, good stability under heat, and/or chemical resistance.
  • PARA (polyarylamide)
    Often combined with infills such as glass or mineral fibers, PARA creates rigid parts with low creep and a slower rate of water absorption than nylon (PA). PARA is excellent for structural components in handheld and medical electronics.
  • PBT (polybutylene terephthalate, Valox)
    A common electronic insulator with a polyester base. Highly used in automotive as a longer-wear alternative to nylon.
  • PBT-PET (polybutylene terephthalate-polyethylene terephthalate)
    A compounded blend of PBT and PET.
  • PC (polycarbonate)
    A clear or colored, lightweight, glass-like plastic that is heavily used across multiple industries. PC is impact resistant, holds great feature detail, and can be used for safety equipment, lenses, electronic devices, and much more.
  • PC-ABS (polycarbonate-acrylonitrile butadiene styrene)
    The best of both PC and ABS. Higher-strength engineering thermoplastic with slightly more flexibility than standard polycarbonate.
  • PC-PBT (polycarbonate-polybutylene terephthalate, Xenoy)
    A tough and rigid material resistant to lubricants, solvents, and cleaning agents. Very common in electronic enclosures.
  • PC-PET (polycarbonate-polyethylene terephthalate)
    A blend of PC and PET provides tough and chemically resistant results and can be used as an alternate to PC-ABS. It endures harsh solvents and cleaners, making it excellent for sports equipment and healthcare applications.
  • PCT (polycyclohexylenedimethylene terephthalate)
    A thermoplastic polyester that typically outperforms PET due to lower moisture absorption and better environmental stability. PCT is often used for connectors and switches.
  • PE (polyethylene)
    One of the most common plastics used in the world, PE has high ductility, abrasion resistance, and chemical resistance. PE is often described by its molecular weight, such as UHMW PE (ultra-high molecular weight), LDPE (low density), or HDPE (high density). PE is used in packaging, tubing, films, bottles, and more.
  • PEEK (polyether ether ketone)
    Offering excellent tensile strength that surpasses most plastics, PEEK is often used as a lightweight substitute for metal parts in high-temperature, high-stress applications. PEEK resists chemicals, wear, and moisture.
  • PEI (polyetherimide, Ultem)
    Known best for its extremely high heat and flame resistance, PEI is used for many medical applications and is more affordable than PEEK.
  • PE-PP (polyethylene-polypropylene)
    A resin blend of the polyolefin’s polypropylene and polyethylene.
  • PE-PS (polyethylene-polystyrene)
    A resin blend of the polyethylene and polystyrene.
  • PES (polyethersulfone)
    A rigid, transparent plastic that is chemically inert, biocompatible, and sterilizable. PES is suitable for food-contact devices such as coffee machine components as well as aerospace and automotive where chemical exposure is high.
  • PET (polyethylene terephthalate, Rynite)
    Also abbreviated PETE, this is a clear, strong, and lightweight PE resin heavily used in food packaging, soda bottles, jars, and more. The material is food-safe. PET is recyclable with a resin code of 1.
  • PLA (polylactic acid)
    A biodegradable and renewable plastic. PLA has a relatively low glass transition temperature and is common in short-use applications.
  • PMMA (polymethyl methacrylate, acrylic)
    A clear glass-like plastic. Good wear and tear properties. Great for outdoor use.
  • POM (acetal polyoxymethylene, Delrin)
    Good moisture resistance, high wear-resistance, and low friction.
  • PP (polypropylene)
    Polypropylene has excellent electrical properties and little or no moisture absorption. It carries light loads for a long period in varying temperatures. It can be molded into parts requiring chemical or corrosion resistance.
  • PPA (polyphthalamide)
    A subset of nylons (polyamide) that typically exhibit a higher melting point and lower moisture absorption. PPA is typically used in automotive and industrial applications because it can withstand harsh chemicals. PPA is good for fuel and fluid manifolds and headlight housings.
  • PPS (polyphenylene sulfide, Ryton)
    A high-performance thermoplastic with extreme resistance to solvents.
  • PS (polystyrene): A clear, hard, and brittle material widely used for food packaging, clamshell containers, and even disposable cutlery.
  • PS-PPE (polystyrene-polyphenyl ethers, Noryl)
    Exhibiting high heat and flame resistance, PPE-PS has high stiffness and tensile strength even at elevated temperatures.
  • PSU (polysulfone, Udel)
    A rigid, stiff, and transparent plastic which is a higher-performance alternative to polycarbonate.
  • PVC (polyvinyl chloride (Shore D))
    A rigid, general-use plastic that is common in plumbing, non-food packaging, and trimming.
  • PVDF (polyvinylidene fluoride, Kynar)
    A chemically inert, high-temperature material. Due to its low friction, PVDF is used in plumbing parts, bearings, chemical handling, electrical wire insulation, and tubing.
  • SAN (styrene acrylonitrile)
    A polystyrene that is heat resistant and transparent. Due to its relationship with polystyrene, SAN is low cost and has enhanced clarity and shine. SAN is common in household goods, door handles, and kitchenware.
  • TPO (thermoplastic polyolefin)
    A flexible plastic with good chemical resistance but lower temperature resistance compared to PP.
  • TPU (thermoplastic polyurethane (Shore D))
    A tough, highly abrasion-resistant resin that bridges the gap between rubbers and plastics. TPUs can be formulated to be rigid or elastomeric. TPU exhibits a high flex before break and is ideal for wheels and door panels.

 

Elastomer and Rubber Molded Materials

  • EPDM (ethylene propylene diene monomer rubber (Viton))
    One of the highest performing rubber elastomers with high heat resistance, chemical resistance, and moisture sealing properties. EPDM is commonly found in automotive seals, gaskets, O-rings, and electrical insulators.
  • PEBA (polyether block amide)
    A soft, flexible, plastic or elastomer used for medical devices such as catheters. PEBA foams are used for padding, shoe insoles, and sports equipment. PEBA is resistant to moisture and UV exposure.
  • PVC (polyvinyl chloride (Shore A))
    A soft rubber-like, general use elastomer, that is common in outdoor products, protective films, and mats. Shore A rubber-like PVC requires plasticizers to improve its flexibility from its typical rigid state. PVC is flame retardant due to self-extinguishing properties.
  • TPE (thermoplastic elastomer)
    A broad class of elastomers that behave like a thermoset with high flex and elasticity but process like a thermoplastic through molding. TPE is an umbrella term for many unique elastomer classes.
  • TPU (thermoplastic polyurethane (Shore A))
    A tough, highly abrasion-resistant elastomer that bridges the gap between rubbers and plastics. TPUs can be formulated to be rigid or elastomeric. TPU exhibits a high flex before break and is ideal for flexible tires, skateboard wheels, and weatherproof gaskets.
  • TPV (thermoplastics elastomer, vulcanized rubber (Santoprene))
    An excellent elastomer with high versatility due to temperature resistance, compression, and elasticity.
  • LSR (liquid silicone rubber)
    Silicones are versatile rubber materials offering food and biocompatibility, extreme heat resistance, and excellent flexibility. LSR is used for medical devices, automotive, aerospace, and consumer products. Liquid silicone rubber molding is a specialized process different from traditional injection molding.

Custom Injection Mold Finishes

Moldmaker’s choice of finish. Typically SPI B-2, depending on geometry and drafts. Interior, non-cosmetic faces, are typically as-machined.

Range of Society of Plastics Industry (SPI) finishes from Grade 3 diamond / high polish to 320 stone low polish. Finishes include: SPI A-1, SPI A-2, SPI A-3, SPI B-1, SPI B-2, SPI B-3, SPI C-1, SPI C-2, SPI C-3, SPI D-1, SPI D-2, and SPI D-3

Range of finishes including matte, swirls, lines, and patterns. Our most common texture finishes include: MoldTech MT11010, MoldTech MT11020, and MoldTech MT11030. Other textured finishes can be added by request.

VDI 3400 Surface Finish (commonly known as VDI surface finish) refers to the mold texture standard set by Verein Deutscher Ingenieure (VDI), the Society of German Engineers. This is mainly processed by EDM machining, producing fine to coarse matte finishes.

No secondary polishing or grinding. Part will show tooling marks.

We can install most commonly used standard inserts in UNF and metric sizes.

Transfer a 2D image onto a 3D part. All images are subject to review.

Engrave part numbers, logos, and more onto your parts.

Mucision has the ability to assemble and label injection molded parts. Discuss your needs with our customer service.

Custom Plastic Injection Molding Company China Mucision

Ready to get started on your quote?

Injection Molding Design Guidelines

Feature Tip

Undercuts

Reduce undercuts, which will increase the complexity and cost of the tool ejection mechanisms, by adding in pass-thru coring.

Wall Thickness

Prevent wall sink and voids by maintaining an even wall thickness. Thinner walls reduce cycle time and reduce costs.

Drafts

Ensure parts are designed with a minimum draft angle of 0.5°, or up to 5°, for faces with medium textures.

Ribs/Gussets

Ribs should be 40-60% the thickness of outer walls and should still maintain draft.

Bosses

Bosses should be designed at a depth of 30% the wall thickness and with a 30% edge groove. Attach them to side walls or ribs for structural integrity.

For design-for-manufacturing recommendations in detail, please contact our customer service.

Custom Plastic Injection Molding Company China Mucision