Quality Plastic Injection Molding Services
Low-volume injection molding service 
Mass injection molding production
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Plastic Injection Molding Service
Plastic product molding workshop
Mass injection molding production service
Lean production, continuously and stably create value for clients, and ensures reasonable benefits.
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.
010203040506
What kind of injection molding services can we provide?
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Our most advantageous injection molding service
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Injection molding service
Our Plastic injection molding strength
Representative OEM injection molding products - by molding category
Single color Injection molding
Insert Injection molding
Overmold Injection molding
Treaded part Injection molding
2-color Injection molding
Representative Products - The industries applicable to plastic products
Intelligent floor cleaning robot
Blender
Air fryer
Air fryer
0102
Printer parts
Mini thermal printer parts
Teller terminal parts
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Massage device
Heath care-Dental impactor
Heath care-forehead thermometer
Heath care-Blood pressure monitor
0102
LED makeup mirror
Hair dryer
Beauty and skin care
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control box
Router
IoT box
Remote control
Security camera
010203
Auto parts
Charging pile components
Charging gun
Charging gun
charging station parts
010203
What is injection molding?
Plastic injection molding is the most efficient way to produce plastic parts in high volumes for the commercial and industrial use. Molten resin is injected under high pressure into a metal mold, then rapidly cooled to form a solid part. Here is a schematic diagram of an injection molding machine
The Plastic Injection Molding Process
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
Overmolding for more design options
Multi-cavity and family tools
Why can we do well in injection molding production?
Plastic Injection Molding Resources-A well-established supply chain
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Frequently-used resins brands
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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.
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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 for plastic products
1.Painting:It can endow plastic products with rich colors and appearance effects, such as high gloss, matte, and metal texture.2.Electroplating:Increase the surface gloss and metal texture of plastic products, and improve the wear resistance and corrosion resistance.3.Printing:Including silk screen printing, pad printing and other methods, various patterns, logos and text can be printed on the plastic surface.4.Laser engraving:Capable of achieving fine patterns and marks, with permanence and high precision. - 5.Vacuum coating:Enable the surface of plastic products to have good decorative and functional properties, such as fingerprint resistance and UV protection.6.Matte treatment:Make the plastic surface have a matte and rough texture, increase the anti-slip property and reduce reflection.7.Polishing:Improve the surface finish of plastic products to make them smoother and brighter.8.Flocking:Attach a layer of fluff to the plastic surface to increase the soft and comfortable touch.
Applications for Plastic Injection Molding
OEM
According to customers need, produce products they need; The products cover many industries, such as small household appliances, electronics, healthcare, home furnishings, beauty care, etc.
ODM
After in-depth exploration of existing advantageous technologies and experiences, as well as market demand research, we began research and development in 2020 and successfully developed high-strength plastic materials for water pipe connectors in May 2022, which were recognized by customers.
The proportion of OEM and ODM in revenue
Low-volume injection molding service
KingSjeng provides best-in-class low-volume injection molding services
from 1pcs to 10,000pcs
Advantages Of Low-Volume Manufacturing
How can low-volume manufacturing help you and your business?
1. Create a bridge between rapid prototyping and full-scale production;
2. Reduce your financial risk because we have no minimum order values;
3. Provide rapid access to emerging markets;
4. Respond quickly to shorter product life cycles;
5. Allow for faster design changes.
Why Choose KingSjeng for Low-Volume Production?
“Low-Volume production" can reduce cost risks, meet the diversified demands of the market, facilitate rapid product improvement and enhance production flexibility.
We can support you to make your dreams come to life.
Supply chain
We have a well-established and rapid-responsive supply chain,e.g. our raw material suppliers,3D printing supplier and surface treatment supplier are within one hour's drive from our company's factory.
Capability
Our factory has relatively complete processing capabilities. We can provide various types of injection mold processing services, injection molding services and product assembly services, and can provide one-stop customized services for customers.
Manufacturing Design Support
We provide detailed design for manufacturing(DFM) support to our clients. For clients who can’t visit our facilities in person, we also offer detailed files showing all production steps.
Experienced project management
We have project managers with rich experience in foreign trade, who can maintain close and good communication with customers to ensure that customers can timely understand the progress and provide good product export services.