Injection Molding

Aria is a Chinese plastic injection molding supplier, it is your all-purpose source for affordable, first-class injection molded parts. Our select plastic injection tooling and molded parts are built to exact specification and can be quickly shipped out to our customers.

  • Highly competitive unit price
  • Comprehensive quality control system
  • Process Optimization for quality melded parts
injection molding supplier

What is Injection Molding?

The injection molding process is the standard operating procedure for generating large quantities of finished plastic parts used in commercial and industrial applications.

Injection molding technology involves injecting molten resin into the cavity of a metal die under high pressure. The die is then rapidly cooled to form a solid shape. If your project requires plastic injection molding services, Aria can help.

Here are four reasons to use our injection molding procedure:

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Virtually limitless
production possibilities

Aria’s capability includes a wide variety of plastic injection molding processes. we can handle a molding range from 60 tons to 1,800 tons.

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Materials
Verification

Aria issues a materials verification report for every injection molding order. Additionally, we offer certificates of compliance for all materials used.

Manufacturing
support design

We optimize costs by providing a detailed design for manufacturing reports for every customer.

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Process optimization
program

We combine data from thousands of projects with our own material and molding procedures. Process optimization can quickly identify the proper machining parameters.

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Capabilities and Types of Service

The rapid mold with aluminum cavity and core has a limited injection life, which provides design flexibility and reduces mold costs. The processing is usually completed within 2 weeks

P20 steel tools are ideal for mass production. The shot peening life is up to 1M. It has the shot peening function and can integrate side pull or cam action. The delivery time is usually within 3 weeks.

This type of tool reduces costs by accepting multiple identical cavities or part families to be machined in one tool. Therefore, it allows more parts to be produced at a time, thereby minimizing unit cost. This is an ideal process for medium-batch production.

Put the insert in the mold and mold around it to extend the tool life of key features, it allows you to mold inserts such as brass nuts in your design.

Install the prefabricated parts in the mold and then cover it with new material. This two-step process achieves the flexibility of multi-material part design by creating molds with different structural materials

Capabilities and Types of Service

rapid tooling service

The rapid mold with aluminum cavity and core has a limited injection life, which provides design flexibility and reduces mold costs. The processing is usually completed within 2 weeks

P20 steel tools are ideal for mass production. The shot peening life is up to 1M. It has the shot peening function and can integrate side pull or cam action. The delivery time is usually within 3 weeks.

This type of tool reduces costs by accepting multiple identical cavities or part families to be machined in one tool. Therefore, it allows more parts to be produced at a time, thereby minimizing unit cost. This is an ideal process for medium-batch production.

Put the insert in the mold and mold around it to extend the tool life of key features, it allows you to mold inserts such as brass nuts in your design.

Install the prefabricated parts in the mold and then cover it with new material. This two-step process achieves the flexibility of multi-material part design by creating molds with different structural materials

Plastic Injection Molding Process

injection molding suppliers
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Step 1
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Step 3

Plastic resin comes in raw pellets. The pellets are dried until they acquire the correct moisture content. They can then be blended with pigments or masterbatch colorants as necessary.

The dried pellets are added to the hopper of the molding machine. Inside the barrel of the molding machine is a reciprocating screw that will move the pellets into the mold.

The pellets are heated and blended until they reach the fully molten state and become liquid resin. And the heater bands keep the temperature inside barred at a stable level for the type of resin being used.

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The mold opens to allow the ejector rod to push the ejector pin to move forwards. So part is ejected and a new cycle begins. In the case of the robot’s hand, the cycle starts and ends when the robot hand receives a new part.

The mold is cooled to solidify the inside part. The type of resin and thickness of the part determines the cooling time. The temperature of the mold is controlled by internal cooling or heating lines where water is cycled.

The heated mold automatically closes. The resin, which is subjected to great pressure, is injected into the mold cavity by way of a gate, the injection pin’s vent empties the displaced air.

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injection molding suppliers
Step 1

Plastic resin comes in raw pellets. The pellets are dried until they acquire the correct moisture content. They can then be blended with pigments or masterbatch colorants as necessary.

step 03
Step 2

The dried pellets are added to the hopper of the molding machine. Inside the barrel of the molding machine is a reciprocating screw that will move the pellets into the mold.

step 02
Step 3

The pellets are heated and blended until they reach the fully molten state and become liquid resin. And the heater bands keep the temperature inside barred at a stable level for the type of resin being used.

step 06
Step 4

The mold opens to allow the ejector rod to push the ejector pin to move forwards. So part is ejected and a new cycle begins. In the case of the robot’s hand, the cycle starts and ends when the robot hand receives a new part.

step 05
Step 5

The mold is cooled to solidify the inside part. Type of resin and thickness of part determine the cooling time. Temperature of mold is controlled by internal cooling or heating lines where water is cycled.

step 04
Step 6

The heated mold automatically closes. The resin, which is subjected to great pressure, is injected into the mold cavity by way of a gate, the injection pin’s vent empties the displaced air.

Benefits of Injection Molding

The widespread availability of plastic materials

Rapidly produce a large series with a short production cycle

Stable production quality

Parts have an exceptional surface quality

Long-term production tool

Overholding allows for more design options

injection molding factory

Materials of Injection Molding

Words Tab
ASB Materials

ABS

Acrylonitrile Butadiene Styrene resin is a milky white solid with a certain degree of toughness, with a density of about 1.04~1.06 g/cm3. It has strong corrosion resistance to acids, alkalis, and salts, and it can also tolerate organic solvents to a certain extent. ABS is a resin that has good mechanical toughness, wide temperature range, good dimensional stability, chemical resistance, electrical insulation properties and it’s easy to manufacture.

  • Common applications: Enclosures
ABS-PC materials

ABS / PC

PC + ABS plastic provides better strength than ABS at a lower cost than PC. It has high impact strength even at low temperatures. In addition, adding glass fiber, mineral fillers and flame retardants to the material can change its performance.

  • Common applications: Enclosures
ABS-LCP materials

LCP

Liquid Crystal Polymer plastic raw materials, also known as liquid crystal polymers, with a density of about 1.35-1.45g/cm3. It is a new type of polymer material, which generally exhibits liquid crystallinity in the molten state. The highly oriented and rod-like nature of the liquid crystal polymer molecules, making their tensile strength and modulus are close to that of aluminum.

  • Common applications: Enclosures
Nylon 6 Materials

Nylon 6

Nylon 6, also known as PA6, polyamide 6, is a polymer compound. Except for its low melting point and wide process temperature range, its chemical and physical properties are very similar to nylon 66. Among all nylon grades, nylon 6 has the lowest modulus.

  • Common applications: Enclosures
Nylon 66

Nylon 66

Polyhexamethylene adipamide, commonly known as nylon-66, is a thermoplastic resin. The performance of nylon 6-6 is better than nylon 6, and the price is not as expensive as nylon 4-6. Its abrasion resistance is the best among all nylons, and its mechanical strength, hardness, and rigidity are very high. Can be used as engineering plastics and making synthetic fibers.

  • Common applications: Enclosures
Nylon 11 Materials

Nylon 11

The density of nylon PA11 is 1.04g/cm3, the melting point is 185℃, the water absorption is 0.1-0.4℅, and the tensile strength is 47-58MPa. It has the advantages of low water absorption, good oil resistance, low-temperature resistance, and easy processing. Widely used in our lives due to its good cost performance.

  • Common applications: Enclosures
PBT Materials

PBT

Polybutylene terephthalate (PBT), a milky white semi-crystalline thermoplastic polyester, is one of the five major engineering plastics. It has high heat resistance. Not resistant to strong acids and alkalis, resistant to organic solvents, flammable, and decomposes at high temperatures. It is widely used in the fields of automobiles, machinery, and equipment, precision instrument parts, etc.

  • Common applications: Enclosures
PC Materials

PC

Polycarbonate is a high molecular weight polymer containing carbonate groups in the molecular chain. It is a tough thermoplastic resin with flame retardancy. Antioxidant. It has excellent impact strength, transparency, and optical properties, mechanical properties, and can be molded to tight tolerances. PC has a wide range of applications, and there are a variety of compounds to choose from.

  • Common applications: Enclosures
PE Materials

PE

The full name is Polyethylene, which is the simplest polymer organic compound and the most widely used polymer material. According to the density, there are 2 types of PE: LDPE and HDPE. It has good inherent lubricity and is easy to process. It should be noted that it is very soft and cannot be used at a temperature much higher than 150.

  • Common applications: Enclosures
PEI Materials

PEI

Polyetherimide (PEI for short) is an amorphous high-temperature super engineering plastic, and its cost is relatively low compared with other high-temperature materials. It has the best high-temperature resistance and dimensional stability, as well as chemical resistance, flame retardancy, electrical properties, high strength, high rigidity, etc. The performance is similar to polycarbonate, but it can work at higher temperatures.

  • Common applications: Enclosures
PE Materials

LDPE

Low-density polyethylene, also known as high-pressure polyethylene (LDPE), is milky white, odorless, odorless, non-toxic, and waxy particles with a matt surface. It has good electrical insulation, transparency, easy processing, and certain air permeability. And has strong extensibility and flexibility, making it have excellent impact strength. This is offset by the permanent deformation after the impact.

  • Common applications: Enclosures
HDPE Materials

HDPE

High-density polyethylene (HDPE) is a white powder or granular product. Non-toxic and odorless, the use temperature can reach 100℃. It does not have the impact strength of LDPE, but it is more elastic. Surface hardness, tensile strength, rigidity, and other mechanical strength are higher than LDPE, close to PP, tougher than PP, but the surface finish is not as good as PP.

  • Common applications: Enclosures
PET Materials

PET

Polyethylene terephthalate (PET), milky white or light yellow, is a highly crystalline polymer with a smooth and shiny surface. It is non-toxic, tasteless, and has good hygiene and safety, and can be directly used for food packaging. It has excellent physical and mechanical properties in a wide temperature range, and the long-term use temperature can reach 120°C. But it is difficult to mold to very close tolerances.

  • Common applications: Enclosures
PP Materials

PP

Polypropylene is abbreviated as PP, which is a colorless, odorless, non-toxic, translucent solid substance. The density is about 0.89~0.91g/cm3, and the operating temperature range is -30~140℃. It is difficult to mold to very close tolerances. Widely used in the production of clothing, medical equipment, automobiles, bicycles, parts, pipelines, chemical containers, etc.

  • Common applications: Enclosures
PPA Materials

PPA

Polyphthalamide is a kind of synthetic resin with high hardness, high strength, good chemical resistance, and low cost. Due to the excellent physical, thermal, and electrical properties of PPA, especially the moderate cost, it has a wide range of applications. Although the use and introduction of PPA are relatively late, its good design data is still very useful.

  • Common applications: Enclosures
PPS Materials

PPS

Polyphenylene Sulfide is a new type of high-performance thermoplastic resin, which has the advantages of high mechanical strength, high-temperature resistance, chemical resistance, flame resistance, good thermal stability, and excellent electrical properties. It is widely used in the fields of electronics, automobiles, machinery, and chemicals.

  • Common applications: Enclosures
PP Materials

PMMA(Acrylic)

PMMA, also known as acrylic, is a tough, highly transparent material with excellent resistance to ultraviolet radiation and weather resistance. It can be colored, shaped, cut, drilled, and shaped. With its beautiful appearance, it has a wide range of applications in the construction industry.

  • Common applications: Enclosures

POM

POM is a crystalline plastic, a density of 1.42g/cm3. It has good rigidity, it is an engineering plastic with excellent comprehensive properties. POM has exhaust problems at high temperatures and is brittle at low temperatures. Glass filled, add lubrication grade available, no flame retardant grade.

  • Common applications: Enclosures
PS Materials

Polystyrene Crystal

Polystyrene Crystal is a colorless and transparent thermoplastic with a glass transition temperature higher than 100°C, making it the cheapest thermoplastic. It has good optical performance. Its impact strength is very low. Widely used in various instrument housings, lampshades, optical chemical instrument parts, etc.

  • Common applications: Enclosures
PEEK Materials

PEEK

Peek (polyetheretherketone) is a kind of special engineering plastic with high-temperature resistance, self-lubrication, easy processing, and high mechanical strength, and other excellent properties. It can be manufactured and processed into various mechanical parts, such as automobile gears, oil screens, gear shift start plates; Aircraft engine parts, automatic washing machine runner, medical equipment parts, etc.

  • Common applications: Enclosures
HIPS Materials

HIPS

HIPS(High Impact Polystyrene) is a bright and pure amorphous plastic. It has the advantages of easy processing, rigidity, dimensional stability, and transparency, but its low impact strength limits its application. It has a lower modulus, better elongation, and is much more brittle than crystalline styrene.

  • Common applications: Enclosures
PSU Materials

PSU

PSU is a relatively low-cost high-temperature amorphous material. It is transparent and has good radiation stability and heat resistance. Can be used at temperatures up to 300 degrees Fahrenheit. Widely used in medical equipment, machinery industry, electronic appliances, and other fields.

  • Common applications: Enclosures
PU Materials

PU

PU(Polyurethane) is an extremely elastic, wear-resistant, and tear-resistant elastic material that can be used in ether and ester-based formulations. These different formulations cover a very wide range of hardness and density.

  • Common applications: Enclosures
TPE Materials

TPE

TPE(Thermoplastic Elastomer), also known as artificial rubber or synthetic rubber. It is a kind of elastomer that has the elasticity of rubber at normal temperatures and can be plasticized and molded at high temperatures. It contains thermoplastic and elastomer properties, which makes the product very easy to use in the manufacture of various products. Standard thermoplastic processing equipment and techniques can be used for processing and molding, such as extrusion, injection, blow molding, etc.

  • Common applications: Enclosures
TPU Materials

TPU

Thermoplastic polyurethane (TPU) is an elastic material with good oil resistance, grease resistance, and wear resistance. It is also a mature environmental protection material. It is widely used in medical and health, electronic appliances, industry, and sports.

  • Common applications: Enclosures

Surface Texture

PM - F0

Non-cosmetic - finish to Protomold discretion

PM - F1

Low-cosmetic - most tool marks removed

PM - T1

Light bead blast texture

PM - T2

Medium bead blast texture

PM - T3

Heavy bead blast

SPI - A1

Mirror

SPI - A2

High Polish

SPI - B1

Medium polish 600 paper

SPI - C1

Low polish 600 stone

Finish

Silk screening
Silk screening

Silk Screening is a printing technique that transforms a 2d image onto a 3D image. Normally a screen printing plate is made by a photochemical process. It uses the mesh to transfer the ink to the substrate.

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Pad printing
Pad printing

Similar to silk screening, pad printing is an indirect offset printing process, A curved pad made of silicone rubber is dipped into the surface of the pad and pressed onto the desired surface to print words, patterns, etc.

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Painting finsh
Painting

Fix the product to be sprayed on the rotating bracket, and then lock the bracket on the assembly line. Spray the paint evenly on the surface of the product. It gives a good touch feel onto the product, but is easy to scratch.

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Brushed
UV Coating

UV coating is short for ultraviolet coating, The UV Coating is a similar process to Painting, where clean components are evenly spread with paint and are instantly dried by ultraviolet light. this gives advantages of scratch, wear, and chemical resistance.

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Laser Engraving/ Etching
Laser Engraving/ Etching

Both laser engraving and etching uses high heat from the laser beam to leave a permanent marking on the plastic part surface. The engraving creates deep marks by removing the material, whereas the etching is using high heat to melt the material.

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Chrome-Plating
Chrome-Plating

As a type of electroplating technique, chrome plating processes a thin layer of chromium onto a plastic or metal surface. This layer can be decorative, corrosion-resistant, and increase surface hardness.

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Process Optimization

Based on data collected from thousands of projects in conjunction with standard material and molding processes, our injection molding procedure is an optimization program that can efficiently identify the right combination of machining parameters for any given project.

Using this information, we can move a new mold from testing to production within a matter of hours. By applying the proper combination of machining parameters required to properly fill a part, we can reduce or even eliminate plastic part defection during the injection molding process.

With Aria’s process optimization, quality issues caused by these molded-in stressors are eliminated:

Warp

Colour Blends

Cracks

Surface shrinkage

Voids

Surface Sink Marks

Undersize

Surface Sheen

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DFM Analysis

A design for manufacturing analysis (DFM) is performed on a part design to determine the suitability of the desired production method. Our reports focus on a number of variables such as these:

reucing tooling cost
Reduce tooling
costs
injection molding Limiting design change cost
Minimize design
changes
injection modling production time
Expedite the
Manufacturing Process
injection molding surface quality

Ensure high-quality
Part

Upon receipt of an appropriate 3D design file, Aria will perform an initial analysis to verify that the parts are suitable for injection molding. Our goal is to make parts that conform to the original design as closely as possible.

Part Design Sample
Verification

Aria has more than 10 years of injection molding factory expression, Aria’s part design sample verification program is available for all injection molding projects. The program offers two sets of samples to our customers for in-house verification and testing before the project moves into production.

injection molding design

Injection Molding & Advantages

injection molding materials

Thousands of plastic materials available for selection

injection modling production time

Quickly produce large series in a short production cycle.

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Stable in
production quality

injection molding surface quality

Excellent part
surface quality

Short time to market icon

Long term
production tool

injection molding technology

Overholding for
more designs

Aria is a Chinese injection molding supplier, Click the following button to get Your Free Quote About Plastic Injection Molding Services Today.

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