1-Start from part design analysis
2-Mold design drawing and DFM report available so you can see how is the mold going to be before mold making
3-If product is complex,moldflow report will be present as well
4-In house mold making shop ensure you mold quality under well control.
5-Normally it takes 15-25 working days to make mold,precise time depends on part design
ODM plastic injection molding
PS, ABS, PP, PVC, PMMA, PBT, PC, POM, PA66, PA6, PBT+GF, PC/ABS, PEEK, HDPE, TPU, PET, PPO,…etc.
Rubber, Slilconce rubber, LSR,Aluminum, Zinc,Copper…Metal…etc.
RoSH and SGS standard
Non marking and Non flash
According to your 2D, 3D Drawing
Color,Quantity,Unit price,Tooling cost,Tooling size:
To be discussed
Standard exported Wooden box packed, Fumigation process(upon required)
Mold Building Lead Time:
T1, 15-25 Working days, Part measurement report (upon required).
Europe, Japan, America, Australian, UK, Canada, France, Germany, Italy…etc.:
13 years experience in plastic injection mold making and plastic prouducts produce.
To be discussed
In-Mold Decoration, Injection Mould, Plastic Mold, Overmould, 2K Mould, Die-Casting Mould, Thermoset Mold, Stack Mold, Interchangeable Mold,Collapsible Core Mold, Die Sets, Compression Mold, Cold Runner System LSR Mold,…etc.
Hasco Standard, European Standard, World Standard
Mould Base Material:
LKM, FUTA, HASCO, DME,…etc. Or as per Customer’s Requirment.
Texture(MT standard), High gloss polishing
P20, 2311, H13, 2344, Starvax 420, 236, AdC3, S136, 2312, 2379, 2316, 2083, Nak80, 2767 …etc.
Hot/ Cold Runner
HUSKY, INCOE, YDDO, HASCO, DME, MoldMaster, Masterflow, Mastip, ZheJiang made brand…etc.
5,000 to 1,000,000 Shots. (According to your working environment.)
Design & Program Softwares:
CAD, CAM, CAE, Pro-E, UG, Soild works, Moldflow, CATIA….etc.
High speed CNC, Standard CNC, EDM, Wire Cutting, WEDM, Grinder, Plastic Injection Molding Machine for trial out mold from 50-3000T available.
How to order
CEMAL Enginnering , professional plastic mold manufacturer in China, we focus on design and manufacturing plastic molds for
the Automotive, Home Appliances and other sectors.
Excited and ready to help support your project from the early stages of part development and tool design to fabrication and parts production via professional engineering, manufacturing, and project management, we are confident that our service level is second to none.
When you choose CEMAL- whether it’s for a single part, a small run or a multi-year contract – you’ll get the same attention to detail, the same problem-solving approach, the same quality solution. That’s the CEMAL promise.
Making our customers satisfying, Keeping our customer successful is the goal of CEMAL.
Why Choose CEMAL
Are you plHangZhou to get a supply of custom injection molds and probably do not have an idea of which Company is likely to offer effective products? If yes, then this article will be a perfect guide for you as it tries to highlight various reasons as to why you should choose Loxin mold as your supplier in injection molds. There are thousands of injection mold manufactures in China and therefore, determining the ideal company to partner with can quite be difficult. Not all factories offer genuine products or even provide the various services at affordable prices and there is thus the need to be careful on the company that you settle for. CEMAL mold has been in existence for more than 10 years now and has proved to be the leading producer of the custom injection mold through the exemplary services to the various customers. It would thus be a wise choice to consider us as your partner in supply of mold related products. Below are some of the reasons as to why you should consider our company
All products are availed at affordable prices
At CEMAL mold, all manufacturing process is done within the company and nothing is ordered from other companies and hence ensuring that all products are traded at the factory price to the various customers. We do not supply our products through any middle persons but rather directly to our clients. Brokers usually charge higher prices on the products in order to get their profits and therefore that is why we avail all products directly to the users to avoid such costs and hence avail the products at affordable prices to our clients.
Highly experienced in production of mold
As mentioned earlier on, CEMAL mold has been in operation for more than 10 years and therefore has efficient knowledge in production of molds and the related services to out esteemed customers. We have transacted with various customers even in the European countries and have always given a positive feedback on our services. If you still don’t believe in us then you can refer from your country on the kind of services offered. We can even provide contacts of the various clients served if they allow us to do so.
Quality services are offered
Our engineers are highly skilled and you can be sure that they offer quality services that meet our customer’s satisfaction. Our main goal is to ensure that all clients are fully satisfied in the mold injection services offered and the company is always ready to even make any changes to meet the customer demands. Our managers are friendly and communicate directly to you if you need a supply of our products without involving any intermediaries. This is in contrast to other manufactures who hire sales ladies to promote the products as they pay them on a commission basis. This calls for more costs as the amount is later transferred to the price of the products
1. Are you a trading company or a manufacturer?
We are a manufacturer as you can see our workshop as above.
2. What kind of trade terms can you do?
3. What is your terms of payment?
50% Mold cost deposit,balance mold cost +50% production cost paid when samples confimed,Balance production cost paid against copy of B/L. We accept T/T
4. Do you support OEM ?
Yes, we can produce by technical drawings or samples.
5. How about your delivery time?
Generally, it take 20-30 working days ( 15-20days make mold, 5-10 days for mass production).
|Surface Finish Process:
|Process Combination Type:
Can you explain the role of temperature and pressure in injection molding quality control?
Temperature and pressure are two critical parameters in injection molding that significantly impact the quality control of the process. Let’s explore their roles in more detail:
The temperature in injection molding plays several important roles in ensuring quality control:
1. Material Flow and Fill:
The temperature of the molten plastic material affects its viscosity, or flowability. Higher temperatures reduce the material’s viscosity, allowing it to flow more easily into the mold cavities during the injection phase. Proper temperature control ensures optimal material flow and fill, preventing issues such as short shots, flow marks, or incomplete part filling. Temperature control also helps ensure consistent material properties and dimensional accuracy in the final parts.
2. Melting and Homogenization:
The temperature must be carefully controlled during the melting process to ensure complete melting and homogenization of the plastic material. Insufficient melting can result in unmelted particles or inconsistent material properties, leading to defects in the molded parts. Proper temperature control during the melting phase ensures uniform melting and mixing of additives, enhancing material homogeneity and the overall quality of the molded parts.
3. Cooling and Solidification:
After the molten plastic is injected into the mold, temperature control is crucial during the cooling and solidification phase. Proper cooling rates and uniform cooling help prevent issues such as warping, shrinkage, or part distortion. Controlling the temperature allows for consistent solidification throughout the part, ensuring dimensional stability and minimizing internal stresses. Temperature control also affects the part’s crystallinity and microstructure, which can impact its mechanical properties.
Pressure control is equally important in achieving quality control in injection molding:
1. Material Packing:
During the packing phase of injection molding, pressure is applied to the molten plastic material to compensate for shrinkage as it cools and solidifies. Proper pressure control ensures that the material is adequately packed into the mold cavities, minimizing voids, sinks, or part deformation. Insufficient packing pressure can lead to incomplete filling and poor part quality, while excessive pressure can cause excessive stress, part distortion, or flash.
2. Gate and Flow Control:
The pressure in injection molding influences the flow behavior of the material through the mold. The pressure at the gate, where the molten plastic enters the mold cavity, needs to be carefully controlled. The gate pressure affects the material’s flow rate, filling pattern, and packing efficiency. Optimal gate pressure ensures uniform flow and fill, preventing issues like flow lines, weld lines, or air traps that can compromise part quality.
3. Ejection and Part Release:
Pressure control is essential during the ejection phase to facilitate the easy removal of the molded part from the mold. Adequate ejection pressure helps overcome any adhesion or friction between the part and the mold surfaces, ensuring smooth and damage-free part release. Improper ejection pressure can result in part sticking, part deformation, or mold damage.
4. Process Monitoring and Feedback:
Monitoring and controlling the temperature and pressure parameters in real-time are crucial for quality control. Advanced injection molding machines are equipped with sensors and control systems that continuously monitor temperature and pressure. These systems provide feedback and allow for adjustments during the process to maintain optimum conditions and ensure consistent part quality.
Overall, temperature and pressure control in injection molding are vital for achieving quality control. Proper temperature control ensures optimal material flow, melting, homogenization, cooling, and solidification, while pressure control ensures proper material packing, gate and flow control, ejection, and part release. Monitoring and controlling these parameters throughout the injection molding process contribute to the production of high-quality parts with consistent dimensions, mechanical properties, and surface finish.
Can you describe the various post-molding processes, such as assembly or secondary operations, for injection molded parts?
Post-molding processes play a crucial role in the production of injection molded parts. These processes include assembly and secondary operations that are performed after the initial molding stage. Here’s a detailed explanation of the various post-molding processes for injection molded parts:
Assembly involves joining multiple injection molded parts together to create a finished product or sub-assembly. The assembly process can include various techniques such as mechanical fastening (screws, clips, or snaps), adhesive bonding, ultrasonic welding, heat staking, or solvent welding. Assembly ensures that the individual molded parts are securely combined to achieve the desired functionality and structural integrity of the final product.
2. Surface Finishing:
Surface finishing processes are performed to enhance the appearance, texture, and functionality of injection molded parts. Common surface finishing techniques include painting, printing (such as pad printing or screen printing), hot stamping, laser etching, or applying specialized coatings. These processes can add decorative features, branding elements, or improve the surface properties of the parts, such as scratch resistance or UV protection.
3. Machining or Trimming:
In some cases, injection molded parts may require additional machining or trimming to achieve the desired final dimensions or remove excess material. This can involve processes such as CNC milling, drilling, reaming, or turning. Machining or trimming is often necessary when tight tolerances, specific geometries, or critical functional features cannot be achieved solely through the injection molding process.
4. Welding or Joining:
Welding or joining processes are used to fuse or bond injection molded parts together. Common welding techniques for plastic parts include ultrasonic welding, hot plate welding, vibration welding, or laser welding. These processes create strong and reliable joints between the molded parts, ensuring structural integrity and functionality in the final product.
5. Insertion of Inserts:
Insertion involves placing metal or plastic inserts into the mold cavity before the injection molding process. These inserts can provide additional strength, reinforce threaded connections, or serve as mounting points for other components. Inserts can be placed manually or using automated equipment, and they become permanently embedded in the molded parts during the molding process.
6. Overmolding or Two-Shot Molding:
Overmolding or two-shot molding processes allow for the creation of injection molded parts with multiple layers or materials. In overmolding, a second material is molded over a pre-existing substrate, providing enhanced functionality, aesthetics, or grip. Two-shot molding involves injecting two different materials into different sections of the mold to create a single part with multiple colors or materials. These processes enable the integration of multiple materials or components into a single injection molded part.
7. Deflashing or Deburring:
Deflashing or deburring processes involve removing excess flash or burrs that may be present on the molded parts after the injection molding process. Flash refers to the excess material that extends beyond the parting line of the mold, while burrs are small protrusions or rough edges caused by the mold features. Deflashing or deburring ensures that the molded parts have smooth edges and surfaces, improving their appearance, functionality, and safety.
8. Inspection and Quality Control:
Inspection and quality control processes are performed to ensure that the injection molded parts meet the required specifications and quality standards. This can involve visual inspection, dimensional measurement, functional testing, or other specialized testing methods. Inspection and quality control processes help identify any defects, inconsistencies, or deviations that may require rework or rejection of the parts, ensuring that only high-quality parts are used in the final product or assembly.
9. Packaging and Labeling:
Once the post-molding processes are complete, the injection molded parts are typically packaged and labeled for storage, transportation, or distribution. Packaging can include individual part packaging, bulk packaging, or custom packaging based on specific requirements. Labeling may involve adding product identification, barcodes, or instructions for proper handling or usage.
These post-molding processes are vital in achieving the desired functionality, appearance, and quality of injection molded parts. They enable the integration of multiple components, surface finishing, dimensional accuracy, and assembly of the final products or sub-assemblies.
Are there different types of injection molded parts, such as automotive components or medical devices?
Yes, there are various types of injection molded parts that are specifically designed for different industries and applications. Injection molding is a versatile manufacturing process capable of producing complex and precise parts with high efficiency and repeatability. Here are some examples of different types of injection molded parts:
1. Automotive Components:
Injection molding plays a critical role in the automotive industry, where it is used to manufacture a wide range of components. Some common injection molded automotive parts include:
- Interior components: Dashboard panels, door handles, trim pieces, instrument clusters, and center consoles.
- Exterior components: Bumpers, grilles, body panels, mirror housings, and wheel covers.
- Under-the-hood components: Engine covers, air intake manifolds, cooling system parts, and battery housings.
- Electrical components: Connectors, switches, sensor housings, and wiring harnesses.
- Seating components: Seat frames, headrests, armrests, and seatbelt components.
2. Medical Devices:
The medical industry relies on injection molding for the production of a wide range of medical devices and components. These parts often require high precision, biocompatibility, and sterilizability. Examples of injection molded medical devices include:
- Syringes and injection pens
- Implantable devices: Catheters, pacemaker components, orthopedic implants, and surgical instruments.
- Diagnostic equipment: Test tubes, specimen containers, and laboratory consumables.
- Disposable medical products: IV components, respiratory masks, blood collection tubes, and wound care products.
3. Consumer Products:
Injection molding is widely used in the production of consumer products due to its ability to mass-produce parts with high efficiency. Examples of injection molded consumer products include:
- Household appliances: Television and audio equipment components, refrigerator parts, and vacuum cleaner components.
- Electronics: Mobile phone cases, computer keyboard and mouse, camera components, and power adapters.
- Toys and games: Action figures, building blocks, puzzles, and board game components.
- Personal care products: Toothbrushes, razor handles, cosmetic containers, and hairdryer components.
- Home improvement products: Light switch covers, door handles, power tool housings, and storage containers.
Injection molding is widely used in the packaging industry to produce a wide variety of plastic containers, caps, closures, and packaging components. Some examples include:
- Bottles and containers for food, beverages, personal care products, and household chemicals.
- Caps and closures for bottles and jars.
- Thin-walled packaging for food products such as trays, cups, and lids.
- Blister packs and clamshell packaging for retail products.
- Packaging inserts and protective foam components.
5. Electronics and Electrical Components:
Injection molding is widely used in the electronics industry for the production of various components and enclosures. Examples include:
- Connectors and housings for electrical and electronic devices.
- Switches, buttons, and control panels.
- PCB (Printed Circuit Board) components and enclosures.
- LED (Light-Emitting Diode) components and light fixtures.
- Power adapters and chargers.
These are just a few examples of the different types of injection molded parts. The versatility of injection molding allows for the production of parts in various industries, ranging from automotive and medical to consumer products, packaging, electronics, and more. The specific design requirements and performance characteristics of each part determine the choice of materials, tooling, and manufacturing processes for injection molding.
editor by CX 2023-11-23