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Quality Plastic Injection Molding Services from China Suppliers | Reliable Factory Solutions
Kingsjeng, one of the excellent injection molding service providers, provides one-stop solutions. We are not only skilled in single-color injection molding, but also in the injection molding of treaded products and secondary molding. Regardless of volume or complexity, our professional team is committed to providing high-level and satisfactory professional support for your injection molding needs.
Our Injection Molding Process Journey
01
RFQ
Your sparkling idea starts here. Send us your requirements for evaluation.
02
Product Design & Optimization
Our designers will create intuitive 3D data for your confirmation.
03
Prototype Making
Prototype within touch, allowing you to evaluate your idea more intuitively.
04
Design Review
Design for manufacturing (DFM) analysis to avoid risks and reduce costs.
05
Stable Production
Based on the ISO quality system, building quality directly into the process.
06
Delivery
Packed securely, products can be delivered globally via sea, air, or train.
What kind of injection molding services can we provide?
Our most advantageous injection molding service
Injection molding service
Our Plastic Injection Molding Strength
Representative OEM Injection Molding Products - By Molding Category
Representative Products - The industries applicable to plastic products
Intelligent floor cleaning robot
Blender
Air fryer
Air fryer
Printer parts
Mini thermal printer parts
Teller terminal parts
Massage device
Heath care-Dental impactor
Heath care-forehead thermometer
Heath care-Blood pressure monitor
LED makeup mirror
Hair dryer
Beauty and skin care
Control box
Router
IoT box
Remote control
Security camera
Power Cover Drive Assembly
Auto parts
Charging pile components
Charging gun
Charging gun
Charging station parts
What is Injection Molding?
Plastic injection molding is the most efficient way to produce plastic parts in high volumes for commercial and industrial use. Molten resin is injected under high pressure into a metal mold, then rapidly cooled to form a solid part. Below is a schematic diagram of the injection molding machine and the process.
The Plastic Injection Molding Process Steps
Plastic injection molding is the process of filling a mold tool with liquid plastic resin under great pressure. The tool may comprise a single cavity or hundreds of cavities in order to make indefinite numbers of parts. Once the mold tools have been carefully designed and manufactured, the molding process consists of the following basic steps:
- Step 1 – The plastic resin comes in raw pellets. These are dried to the right moisture content, and then if necessary they can be blended with pigments or master batch colorants to create the correct color for the design.
- Step 2 – The dried pellets are poured into the hopper of the molding machine. A reciprocating screw inside the barrel of the machine is used to transport these pellets towards the mold while at the same time heating them.
- Step 3 – Within the barrel, the pellets are mixed and heated until fully molten, forming the liquid resin.
- Step 4 – The heated mold closes automatically and resin, under great pressure, is injected through a gate and into the mold cavity.
- Step 5 – The mold is cooled in a short amount of time to solidify the part inside.
- Step 6 – The mold opens and the part is ejected to begin a new cycle.
Advantages Of Plastic Injection Molding
There are many advantages to plastic injection molding. These include the ability to make large volumes of parts quickly, high surface quality, many resins to choose from, color flexibility, and durable tooling that can last for years.
Hundreds of resins to choose from
Economies of scale
Stable and repeatable
Excellent surface quality
Overmolding for more design options
Multi-cavity and family tools
Why can we do well in injection molding production?
Design For Manufacturing
We perform a personalized DFM based on your needs, ensuring a smooth transition from design to production.
Injection Molding Materials
Choosing the right resins is extremely crucial, as it affects product performance, quality, cost, and efficiency.
Color Consistency
Ensures a coordinated and beautiful appearance, reflecting quality and enhancing brand image.
Visual Quality Standards
The highest visual quality inspection standards are used to verify your plastic injected molded parts.
A diligent and enterprising team
A professional and diligent team is crucial in improving efficiency, ensuring quality, and overcoming challenges.
Product Road mapping
Follow the product road mapping journey to save time, money, and effort on your next project.
Plastic Injection Molding Resources - A well-established supply chain
Frequently-used resins brands
Color master batch
Professional color master batch manufacturers with long-term cooperation in the local area can provide color master batch that meets environmental requirements and color consistency, with color standards based on Pantone or Ral.
Frequently-used resins
- ABS, ASA, PS, AS, PS, HIPS etc.
- PP, PE, HDPE, UPE etc.
- PA66, PA6, PA6T, PA9T, PA12, PA46 etc.
- PC, POM etc.
- PPE etc.
- PET, PBT etc.
- TPEE, TPE, TPV, TPU etc.
- PARA, PMMA, PEEK, PES, PPSU, PEI, PPS etc.
Property of material
- Carbon fiber reinforced, wear-resistant, conductive, thermal conductive, and high rigidity specifications.
- Special composite: aramid AF CF+GF, CF+TF, GF+TF, Equal composite specifications.
- Wide range wear resistance level: including wear resistance specifications such as SI, MoS, PTFE, nano modification, etc.
- High dimensional stability (low moisture absorption, low warping, low shrinkage, low coefficient of thermal expansion).
- Combination of conductivity, anti-static, electromagnetic shielding, and thermal conductivity.
Common surface treatments
- Painting: Endows products with rich colors and effects like high gloss, matte, and metal texture.
- Electroplating: Increases surface gloss, metal texture, wear, and corrosion resistance.
- Printing: Silk screen printing, pad printing for patterns, logos, and text.
- Laser engraving: Fine, permanent, and high-precision patterns and marks.
- Vacuum coating: Decorative and functional properties like fingerprint resistance and UV protection.
- Matte treatment: Rough texture, increases anti-slip property, and reduces reflection.
- Polishing: Smooths and brightens the product surface.
- Flocking: Attaches a layer of fluff for a soft, comfortable touch.
Applications for Plastic Injection Molding
OEM Service
According to customers' needs, we produce the products they need. The products cover many industries, such as small household appliances, electronics, healthcare, home furnishings, beauty care, etc.
ODM Service
After in-depth exploration of existing advantageous technologies and experiences, as well as market demand research, we successfully developed high-strength plastic materials for water pipe connectors, recognized by customers.
The proportion of OEM and ODM in revenue
Frequently Asked Questions
Q1: What is plastic injection molding?
Plastic injection molding is a highly efficient manufacturing process where molten plastic resin is injected under high pressure into a custom metal mold. The mold is then rapidly cooled to solidify the plastic into the desired part shape, making it ideal for high-volume production.
Q2: What molding categories do you support?
We support a wide range of molding categories to meet diverse design requirements, including single-color injection molding, insert molding, overmolding, threaded part molding, and 2-color injection molding.
Q3: Which industries can use your molded plastic products?
Our molded plastic components are widely used across multiple sectors, including smart home appliances, office equipment, medical & health devices, beauty & skin care products, Internet of Things (IoT) hardware, and new energy automotive components.
Q4: What types of plastic resins do you commonly work with?
We work with hundreds of resins, including common materials like ABS, PP, PC, POM, and PA66, as well as high-performance plastics like PEEK, PPSU, and PEI. We also offer composite modifications, such as carbon fiber reinforcement and wear-resistant additives.
Q5: What surface finishing options are available for plastic parts?
We provide comprehensive surface treatments to enhance appearance and durability. These include painting (glossy, matte, metallic), electroplating, silk screen and pad printing, laser engraving, vacuum coating, matte treatments, polishing, and flocking.
Q6: Do you offer both OEM and ODM services?
Yes. Our OEM services focus on manufacturing custom parts strictly according to customer designs. Our ODM services leverage our internal R&D capabilities to design and manufacture innovative products, such as our high-strength plastic water pipe connectors.