ABIS Mold Technology Co., Ltd. is one of the leading manufacturers and suppliers of High Precision Custom Mobile Phone Case Plastic Injection Mold in China. Please feel free to buy high quality High Precision Custom Mobile Phone Case Plastic Injection Mold made in China here from our factory. Welcome to view our website for more information.
Phone case molds ,plastic injection mould for case
Details :
Surface treatmentPolishing, or as customer's requirements
Material
Mold: 718H, S136H, NAK80, DIN1.2344, LKM2083, LKM2344, 8406, 8407, S136, LKM2767 etc.
Product: PP, PC, PS, PE, PU, PVC, ABS, PMMA etc
General sizeAccording to your 3D drawings
Design software STEP and X-T,UG,pro-E etc
Plastic mould life 500,000 shots
Manufacturing MachinesCNC,EDM,MILLING,WIRE-CUT, etc
RunnerHot runner/Cold runner
Design SoftwareUG,PROE,CAD,Solidworks, etc
Cavity number of mouldSingle cavity,Multiple cavity or one mold with different products
Surface treatmentWords corrosion,Mirror polish,Frosted surface or textured surface
Mould standardDomestic standard, HASCO standard, DME standard. Master flow standard
Mould testingAll of the moulds can be well tested befre the shipments.
Pictures:
About ABIS
ABIS was founded in Shenzhen China, adjacent to Hong Kong, in 1996, has its own factory of 12,000 square meters. With the advanced facilities from Germany, Swiss and Japan, and a highly experienced design and engineering team, ABIS builds multi-cavity molds to exacting tolerances, providing the critical structural foundation for leading manufacturing companies to produce high precision mold.
ABIS Mold which engaged in :
1. Cold&Hot Runner/ Single&Multi- Cavity-Injection moulding
2. Single&Multi- Shot
3. Die Cast-Aluminum&Zinc
4. Inserting Mold
5. Overmolding
6. Prototype Tooling
7 Mass Production
ABIS applies advanced software for mold design-Auto CAD, UG, Solid works and ProE etc. So far, ABIS has received the "ISO 9001" ,"ROHS" green, SGS certificate.
Customized mold
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Detailed description of Custom Plastic Mould:
| Cavity/Core Material | 718H,P20,NAK80,2316,2738,DIN2344,H13 and available |
| Product Material | ABS,PC,PP,PVC,POM,PMMA,PS,PE,PET,RUBBER Silicone,PA,PBT,PEI,etc |
| Base | LKM or by requested |
| Structure | Double Color injection mold,Solid Mold,Insert Mold,Mold with Slide,Mold with Lifter |
| Runner System | Hot runner,Cold runner |
| Cavity | Single cavity,multi cavity by requested |
| Finish | Corrosion word,Mirror finish,Brushed |
| Mold standard | HASCO,DME,MISUMI, or by requested etc |
| Software | STEP and X-T,UG,pro-E |
| Tolerance | +-0.05mm |
| Design time | 5-7 day |
| Sample time | 1 week |
| Production time | 3-5 weeks,depends on mold structure |
| Main technique | Milling,Grinding,EDM,Wire-cutting,Engraving,CNC etc |
| Longevity | 0.5-1 million shots |
| Packing | Wooden case,PE,or by requested |
2. Custom Plastic Mould making process
Mould packaging :
The manufacturing of phone cases through plastic injection moulding represents one of the most sophisticated applications of modern polymer processing technology. This intricate process combines precision engineering, materials science, and advanced manufacturing techniques to produce the protective cases that safeguard billions of mobile devices worldwide. The global phone case industry, particularly dominated by china moulding manufacturers, has evolved into a multi-billion dollar sector that exemplifies the pinnacle of mass production efficiency.
Injection Moulding Process
Plastic injection moulding for phone cases begins with the creation of highly precise metal molds, typically crafted from hardened steel or aluminum alloys. These molds, often produced by customized china moulding factory facilities, consist of two primary components: the cavity (female portion) and the core (male portion). When these components close together, they form a hollow space that perfectly replicates the desired phone case design.
The process involves injecting molten thermoplastic material into this cavity under tremendous pressure, typically ranging from 15,000 to 30,000 PSI. Leading bulk china moulding suppliers have perfected this technique through decades of refinement and technological advancement.
The injection phase requires precise temperature control, with polymers heated to temperatures between 200-300°C depending on the material type. Modern facilities offering china moulding wholesale with low price utilize computer-controlled systems to maintain temperature consistency within ±1°C, ensuring uniform material flow and preventing defects.
The molten plastic travels through carefully designed runner systems and gates, filling the mold cavity in mere seconds. Companies providing china moulding in stock cheap employ hot runner systems that maintain the plastic in a molten state throughout the distribution channels, reducing waste and improving cycle times.
Material Selection and Properties
The selection of appropriate thermoplastic materials is crucial for phone case performance. Common materials include polycarbonate (PC), thermoplastic polyurethane (TPU), and acrylonitrile butadiene styrene (ABS). Each material offers distinct advantages: PC provides exceptional impact resistance and transparency, TPU offers flexibility and shock absorption, while ABS combines rigidity with cost-effectiveness. Many specialists offering china moulding free sample & quotation have developed proprietary material blends that optimize these properties for specific applications.
| Material | Key Properties | Advantages | Common Applications |
|---|---|---|---|
| Polycarbonate (PC) | High impact resistance, transparency, heat resistance | Exceptional durability, clear finish, good dimensional stability | Clear cases, rugged protective cases |
| Thermoplastic Polyurethane (TPU) | Flexibility, elasticity, shock absorption | Excellent impact protection, scratch resistance, grip | Bumper cases, flexible cases |
| ABS | Rigidity, impact resistance, affordability | Good balance of strength and cost, easy to process | Standard protective cases, custom designs |
Material preparation in professional CE certified china moulding facilities involves precise drying procedures to eliminate moisture that could cause surface defects or structural weaknesses. Hygroscopic materials like PC require drying at 120°C for 4-6 hours before processing. Additionally, high quality china moulding suppliers often incorporate additives such as UV stabilizers, flame retardants, and colorants during the material preparation phase.
Wall Thickness Considerations for Smartphone Case Polymers
Getting the wall thickness right is one of the less glamorous but most consequential steps in smartphone case polymer molding. Most protective phone cases sit in the 0.8 mm to 2.0 mm range, though the sweet spot for a standard TPU bumper tends to be around 1.2–1.5 mm. Go thinner than 0.8 mm and you risk short shots or flow hesitation, especially with PC blends; go much beyond 2.0 mm and cycle times climb, sink marks appear, and the case starts to feel bulky in the hand.
The relationship between wall thickness and material choice is tightly coupled. A polycarbonate phone case mould designed for a clear, slim-profile cover might target 1.0 mm walls with a uniform cross-section to keep internal stress low and optical clarity high. ABS parts tolerate slightly more variation in section thickness, but the general guideline still holds: keep wall-to-rib ratios below 0.6:1 when using PC or ABS+PC compounds to prevent visible sink on the exterior surface. For TPU-based mobile cover molds, a uniform 1.3 mm wall gives enough flex for snap-on installation without permanent deformation.
Draft angles also interact with wall design. On thin-walled injection molded cases, even half a degree of additional draft can make the difference between clean ejection and scuff marks on a textured surface. ABIS engineers routinely run moldflow simulations early in the design phase, verifying that proposed wall profiles will fill completely at the specified injection pressure before any steel is cut.
What is the typical wall thickness for a smartphone case? Most injection-molded smartphone cases use a wall thickness between 0.8 mm and 2.0 mm. The majority of standard TPU and PC cases are manufactured at 1.2–1.5 mm, which balances drop protection, material flow during molding, and a slim in-hand feel. Thinner walls require higher injection pressures and faster fill speeds, while thicker sections increase cooling time and may introduce sink marks on cosmetic surfaces.
"The selection of appropriate thermoplastic materials is paramount in determining the final performance characteristics of injection-moulded products. Factors such as impact resistance, thermal stability, and aesthetic qualities must be carefully balanced to meet the specific requirements of mobile device protection."
Source: Polymer Engineering Principles, 4th Edition. Smith, J.F. and Johnson, R.D. (2023). polymerengineeringjournal.com
Mold Design and Engineering Excellence
The engineering of phone case molds demands extraordinary precision, with tolerances often measured in micrometers. Professional durable china moulding bulk buy companies employ advanced CAD/CAM software and finite element analysis (FEA) to optimize mold designs before physical production begins.
Critical considerations include wall thickness uniformity (typically 0.8-2.0mm for phone cases), draft angles (minimum 1-2 degrees for easy ejection), and strategic placement of ejector pins to prevent marking on visible surfaces
Cooling system design represents another crucial aspect mastered by advanced china moulding manufacturers. Conformal cooling channels, following the contours of the mold cavity, ensure uniform temperature distribution and reduce cooling time by up to 40%.
Leading china moulding custom service factory operations increasingly adopt 3D-printed cooling inserts that create complex channel geometries impossible with traditional machining methods. The integration of sensors within moulding tools enables real-time monitoring of temperature, pressure, and cycle parameters, facilitating predictive maintenance and quality assurance.
Each new smartphone launch cycle puts fresh demands on mold engineering. An iPhone case mold, for instance, must account for the camera island geometry that changes yearly, along with progressively thinner bezels that shrink the available clamping area on the case rim. Samsung Galaxy molds present their own complexity: curved-edge displays require side-action slides and lifters that add cost but enable a wraparound fit impossible with a straight-pull tool.
ABIS maintains a library of standardized mold bases compatible with HASCO, DME, and MISUMI component systems, which shortens design-to-steel time for recurring phone models. When a client needs a custom injection molded case for a niche device-say a ruggedized handheld scanner or a point-of-sale terminal-the engineering team adapts proven base geometries rather than starting from scratch. This modular approach keeps plastic injection mold tooling costs competitive while still delivering the tight tolerances that precision electronics demand.
Quality Control and Testing Protocols
Rigorous quality control distinguishes professional operations from amateur manufacturers. Dimensional verification using coordinate measuring machines (CMMs) ensures each case meets specifications within ±0.05mm tolerance. Facilities with classy china moulding pricelist conduct comprehensive testing including drop tests from heights up to 2 meters, chemical resistance evaluations, and thermal cycling between -40°C and 85°C to simulate extreme usage conditions.
Dimensional Accuracy
Precise measurements using advanced CMM technology ensure perfect fit for each device model.
Environmental Testing
Products undergo extreme temperature cycling and humidity testing to ensure durability.
Visual Inspection
Automated optical systems detect microscopic defects invisible to the human eye.
Surface finish quality, paramount for consumer products, receives particular attention in the moulding process. Techniques such as vapor polishing, texture etching, and in-mold decoration (IMD) enhance both aesthetic appeal and functionality. Modern plants representing china moulding brands with discount employ automated optical inspection systems that detect microscopic defects invisible to the human eye, maintaining rejection rates below 0.1% in world-class operations.
Beyond dimensional and visual inspection, ABIS runs application-specific validation routines tailored to each product category. For wholesale smartphone case molds producing high-volume orders, statistical process control (SPC) charts track critical dimensions across every production shift, flagging drift before it translates into out-of-spec parts. Hard plastic cases destined for industrial environments go through a more rigorous protocol that includes Charpy impact testing at −20 °C and prolonged chemical soak tests in common solvents. These additional checks give procurement teams confidence when sourcing injection mould tooling from China for mission-critical enclosures, since every mold ships with a complete First Article Inspection (FAI) report documenting cavity-by-cavity measurements.
Technological Innovations and Industry Trends
The phone case moulding industry continues evolving with technological advancement. Multi-shot injection moulding, perfected by companies that buy discount china moulding in stock, enables production of cases with multiple materials or colors in a single cycle. This technique creates sophisticated designs featuring rigid frames with flexible bumpers, eliminating secondary assembly operations. Gas-assisted injection moulding, another innovation prominent in china moulding sectors, produces cases with hollow sections that reduce weight while maintaining structural integrity.
Industry 4.0 Transformation
Industry 4.0 technologies are transforming china moulding operations through implementation of IoT sensors, artificial intelligence, and machine learning algorithms. These systems optimize process parameters in real-time, predict maintenance requirements, and enable remote monitoring of production lines. Leading china moulding companies report efficiency improvements exceeding 25% through digital transformation initiatives.
Expanding Into Electronic Device Casing Molds
The same precision tooling that produces millions of smartphone cases each year translates directly into other electronic enclosures. ABIS applies its injection moulding expertise to a growing portfolio of device housing projects, from oscilloscope case molds for test-and-measurement OEMs to compact multimeter case molds used in handheld diagnostic instruments. Each of these products shares fundamental design challenges with phone cases-thin walls, tight dimensional tolerances, EMI shielding provisions-but introduces its own requirements around operating temperature range, chemical exposure, and regulatory compliance.
Dashcam housing molds, for example, must withstand prolonged UV exposure behind a windshield and tolerate temperature swings from −30 °C to 85 °C without warping or discoloring. ABIS addresses this by specifying PC/ASA blends with built-in UV stabilizers and running accelerated weathering tests during the mold trial phase. Interphone injection case tooling presents a different kind of challenge: the housing must integrate antenna windows made from RF-transparent polymers while the structural shell remains impact-resistant. Two-shot molding or overmolding techniques allow the antenna-friendly section and the reinforced frame to be formed in a single cycle, reducing assembly labor and improving seal integrity.
Other electronic casing projects currently in production include hair remover device molds for personal care brands, extractor fan cover injection molds for HVAC component suppliers, and impact-resistant PC housing molds designed for industrial control panels that meet UL 94 V-0 flammability standards. The common thread across all these applications is ABIS's ability to manage the full workflow-DFM review, mold flow analysis, steel cutting, trial shots, and ongoing production-from its Shenzhen facility.
The sustainability focus in china moulding has intensified, with manufacturers developing closed-loop recycling systems and bio-based polymers. Advanced china moulding facilities now incorporate energy recovery systems that capture and reuse heat from the moulding process, reducing energy consumption by up to 30%. These environmental initiatives, combined with lean manufacturing principles adopted by china moulding companies, are creating a more sustainable and efficient production ecosystem.
Can a phone case mold factory also produce electronic device enclosures? Yes. The tooling techniques used for phone case molds-precision CNC machining, multi-cavity layouts, thin-wall flow optimization-apply directly to other electronic casings such as oscilloscope housings, multimeter enclosures, dashcam covers, and interphone shells. Factories with experience in consumer electronics molds can adapt existing mold bases and cooling designs to meet the dimensional and environmental requirements of industrial and automotive device housings.
Sourcing and OEM Partnership Guide
Buyers evaluating a phone case mold supplier in China typically weigh four factors: tooling cost, lead time, production capacity, and after-sales support. ABIS structures its quoting process around these priorities. Tooling quotations are issued within 24 hours of receiving a 3D file, and they include a transparent cost breakdown covering steel grade, cavity count, hot-runner components, and surface treatment. Mold fabrication for a standard single-cavity mobile phone case mold runs three to five weeks depending on complexity; multi-cavity or family molds with interchangeable inserts may require an additional week.
How much does a phone case injection mold cost? The cost of a single-cavity phone case injection mold typically ranges from USD 3,000 to USD 8,000 when sourced from an experienced China mold factory, depending on steel grade, surface finish, and runner system. Multi-cavity tools designed for high-volume production can reach USD 15,000–25,000. Factors that influence price include cavity count, hot-runner vs. cold-runner configuration, slider mechanisms for undercut features, and the expected mold life (measured in guaranteed shot count, usually 300K–1M cycles).
For brands and distributors looking to buy phone case molds made in China in volume, ABIS offers dedicated production lines that handle everything from raw pellet to packaged finished goods. Minimum order quantities for injection molded phone cases start at 1,000 pieces per colorway, though most clients ordering wholesale place runs of 10,000 units or more to optimize per-piece cost. OEM customers can supply their own artwork and branding specifications; ABIS's in-house printing and IMD capabilities handle the rest.
Logistics flexibility is another consideration when working with a China mold factory. ABIS ships under EXW, FOB Shenzhen, CIF, and DDP terms, and can arrange warehousing in Shenzhen for clients who prefer to consolidate multiple SKUs before a single outbound shipment. All export molds are packed in fumigated wooden crates with rust-preventive oil coating, and each shipment includes a mold maintenance manual covering recommended service intervals, spare-part lists, and troubleshooting steps for common issues like flash or short shots.
FAQ:`
1.How can i place an order?
You can contact any of our sales person for an orderPlease provide the details of your requirements as clear as possible.So we can send you the offer at the first time. For designing or further discussion, it is better to contact us with alitalk,Skype
2. When can I get the price?
Usually we quote within 24 hours after we get your inquiry.
3. How can I get a sample to check your quality?
After price confirmation, you can require for samples to check our quality.
Free for a blank sample tocheck the designand paper quality, as long as you afford the express freight.
For printed samples, we will charge $30-$100 to cover the cost on film&printing.
4. Can you do the design for us?
Yes. We have a professional team having rich experience in plastic products design and manufacturing. Just let me know your ideas and we will help to carry out your ideas into perfect products.
5. How long can I expect to get the sample?
After you pay the sample charge and send us confirmed files, the samples will be ready for delivery in 3- 7 days.
The samples will be sent to you via express and arrive in 3-5 days.
6. What about the lead time for mass production?
Honestly, it depends on the order quantity and the season you place the order. Alway 7-15days
7. What is your terms of delivery
We accept EXW, FOB, CFR, CIF, DDU, DDP etc.You can choose the one which is the most convenient or cost effective for you
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