plastic enclosure mold,Electronic Housing Injection Mold,Instrument Case Molding

Q: 1.How do you ensure quality control in plastic injection molding?

We are a ISO 9001 certificated company. We ensure quality control in plastic injection molding through a multi-faceted approach which includes material testing, precise machine calibration, meticulous mold design and maintenance, and stringent inspection processes.

Q: 2. How do the DFM report work?

A Design for Manufacturability (DFM) report is a crucial document that evaluates the manufacturability of a product's design, aiming to identify and address potential manufacturing issues before they arise. Reports help identify and address potential issues early in the design phase, preventing costly changes later. Cost Efficiency: By optimizing designs for manufacturability and testability, reports help reduce production costs and increase yield. Quality Assurance: Thorough testing ensures that the final product meets quality standards and performs reliably.

Q: 3. What is the typical lead time for injection molding?

Mold fabrication usually takes 4–8 weeks, while production lead time depends on part complexity and quantity.

Q: 4. What is the difference between a prototype mold and a production mold?

Prototype molds are faster and cheaper, often using aluminum; production molds use hardened steel for high-volume runs.

Q: 5. Can you do small batch injection molding?

Yes. With standardized tooling and soft molds, small batches (hundreds to thousands) are feasible.

Plastic Enclosure Molding Service

We focus on providing high-precision, long-life injection molds and high-volume production of plastic housings for home appliances. With scientific design, high-precision machining, strict quality control, and system integration, we help our customers achieve efficient, high-quality production at mass production.

Our Capability

Item	Capability Range
Injection Machine Clamping Force	80T – 1500T
Shot Size	0.2g – 9806g
Part Size	3×3×3 mm to 1450×1350×1450 mm
Cavitation	1 – 128 cavities (depending on client requirements)
Tolerance	±0.05 mm (depending on material and size)
Appearance Surface Grade	SPI #A1 (high-gloss mirror) to VDI 3400 textured finishes (VDI 12–45 available)
Monthly Capacity	1,000,000 pcs
Typical Lead Time	Mold: 4–6 weeks; Production: 2–3 weeks

The Materials We Support

ABS / PC / PC-ABS / PA — UL94, Heat Resistance, Impact & Appearance Capability Comparison

Material	Typical UL94 Rating (Grade/Wall Thickness Dependent)	Heat Resistance (HDT / Long-Term Use)	Impact Resistance	Appearance Surface / Clear Window
ABS	General purpose: HB; FR grades up to V-0 / 5VA (≥1.5 mm)	~85–95°C (general); high-heat grades up to 111°C	Good; retains toughness at low temperatures (-20°C)	Yes — appearance surface (high gloss / matte / electroplating); No — clear window (opaque)
PC	FR grades: V-2 (0.8 mm) → V-0 (1.0 mm) → 5VA (3.0 mm)	120–140°C; excellent thermal stability	Excellent; highest impact strength among transparent materials	Yes — appearance surface; first choice for clear windows (high light transmission + impact resistance)
PC-ABS	V-0 @ 1.2–1.7 mm; some grades up to 5VA @ 2.9 mm	110–135°C; better than ABS, close to PC	Excellent; good low-temp toughness, superior to ABS	Yes — appearance surface (best overall appearance); No — clear window (typically opaque)
PA (Nylon)	FR grades: V-0 / V-2 (grade dependent, 0.75–1.6 mm)	110–160°C (varies significantly between PA6/PA66)	Tough and strong, but notch-sensitive; properties drop after moisture absorption	Yes — appearance surface (typically matte/textured); No — clear window (opaque; transparent PA is extremely rare)

Selection Guidelines

For clear windows → Choose PC: PC is the only material among the four that delivers both high transparency and high impact resistance. ABS, PC-ABS, and PA are all opaque and cannot be used for windows.
For flame retardancy + appearance → PC-ABS is the best balance: V-0 is easily achieved (1.2–1.5 mm), appearance approaches PC, and cost is lower than pure PC — the top choice for consumer electronics housings.
For low-cost appearance parts → ABS: General-purpose grades are only HB, but FR grades can reach V-0 — excellent decoration capability (electroplating, painting, IMD) for housings that don't need transparency.
For heat/chemical resistance + structural parts → PA: HDT can exceed 160°C, with good wear and oil resistance, but moisture absorption affects dimensional stability and appearance. FR grades are mainly V-0, suitable for functional parts rather than appearance parts.
Always verify the UL94 rating by grade and wall thickness: The same material can have completely different UL94 ratings depending on grade and wall thickness. For example, PC is V-2 at 0.8 mm but reaches V-0 at 1.0 mm. Always request the UL Yellow Card for the specific grade to confirm.

What IP Grade Do You Need?

IP65 / IP67 — Sealing Methods & Waterproof Junction Box Applications

Rating	Water Ingress Test Conditions	Recommended Sealing Method	Waterproof Junction Box / Outdoor Enclosure Applications
IP65	Water jets: 6.3 mm nozzle, 12.5 L/min flow rate, 2.5–3 m distance, at least 3 minutes	O-ring groove / flat gasket: sealing achieved through compression; simple structure, serviceable. Ultrasonic or hot-plate welding NOT recommended — cannot be opened for maintenance after welding.	Outdoor surveillance junction boxes, streetlight controllers, industrial sensor housings. Rain and hose-down protection, but no immersion.
IP67	Short-term immersion: top of enclosure at least 0.15 m below water surface, bottom at least 1 m below, 30 minutes	O-ring groove + controlled gasket compression: recommended compression ratio 15%–22%, compression amount ~0.4–0.6 mm (depending on hardness). Ultrasonic welding can also be used for permanent sealing (non-serviceable).	Outdoor waterproof junction boxes (short-term flooding/storm exposure), industrial field junction boxes, automotive ECU housings.

Selection Guidelines

IP65 → O-ring groove is standard: Simple, serviceable, and the most common solution for outdoor boxes. With proper groove design and compression, passing the IPX5 water jet test is no challenge.
IP67 → O-ring groove still works, but compression must be precisely controlled: A gasket compression ratio of 15%–22% is a proven effective range. If the box needs permanent sealing (no intention of opening), ultrasonic welding is the more reliable choice.

Secondary Operations

A molded enclosure is usually just the starting point. Here's all the stuff we can do to it after it comes out of the mold, or sometimes right in the mold:

Snap-FitsThose little flexible hooks that let the box click together without screws. Super common in consumer electronics — saves assembly time, no extra parts, and it's easy to open if you need to service it. Just gotta design the geometry right so it doesn't snap off after ten cycles.

Screw BossesThe classic. We mold in cylindrical posts with a hole in the middle — you drive a self-tapping screw or a machine screw right into it. Strong, reliable, and easy to disassemble. Great for anything that needs to be opened more than a few times, or where you need real clamping force.

PCB Mounting PostsLittle standoffs or locating pins inside the box that hold the circuit board in place. They keep the PCB from sliding around, make sure it sits at the right height, and protect the solder joints from stress. Usually paired with snap-fits or screws to lock the board down.

Insert MoldingThis is where you put a metal part — a threaded insert, a bushing, a contact pin — into the mold before injecting the plastic. The resin flows around it and locks it in place. Way stronger than screwing into plastic after the fact, and perfect for high-cycle threaded connections or electrical contacts.

Overmolding / Two-Shot MoldingTwo materials, one part. You mold a rigid substrate first, then shoot a soft TPE or TPU over it for grip, sealing, or aesthetics. Think of a power tool with a rubberized handle, or a waterproof enclosure with an integrated gasket. You can also do two-shot for color combinations — no painting, no assembly; the colors are molded right in.

Silk Screen / Hot Stamping / IMD / Laser EngravingAll the decoration options:

Silk screen: flat, reliable, cheap. Logos, icons, text. Works on flat or gently curved surfaces.
Hot stamping: that shiny metallic or holographic look. Heated die presses foil onto the part.
IMD/IML: the graphic goes into the mold before injection. The decoration becomes part of the part — no peeling, no fading. Great for durable graphics on appliance panels or automotive trim.
Laser engraving: permanent marking, no ink, no foil. Great for serial numbers, QR codes, or a premium frosted look.

EMI ShieldingFor electronics that need to block electromagnetic interference. We can do this a few ways: spray a conductive coating inside the housing, apply a conductive gasket or fabric, use metallized film, or mold in a conductive filler in the plastic itself. Common in medical devices, telecom gear, and anything with sensitive circuitry or RF components.

You don't need to source all this out separately. We handle the molding and the finishing — snap-fits, inserts, overmolding, decoration, EMI shielding — all under one roof. One supplier, one shipment, way less hassle.

Our Workflow

A transparent, step-by-step process from design to delivery.

Stage 1: R&D Support. We support customer R&D. Create the files or improve the design if needed (UG, SolidWorks, ProE, AutoCAD, etc.).

Stage 2: Mold Process. Mold design (DFM report) → check/approve → make mold → produce sample → sample confirmed → check final mold quality ready to export.

Stage 3: Sample Modification. If the first sample does not satisfy the customer, we can modify the mold to meet customer requirements.

Stage 4: Sample Delivery. Produce the customer's requested quantity, free shipping.

Stage 5: Final Delivery. Deliver goods by sea or by air; special requirements can be accommodated based on customer demands.

Why Choose Yixing Technology?

1. High-Precision and High-Volume Molds

We specialize in multi-cavity mold designs, ranging from 1-out-2 to 1-out-48, using high-strength mold bases and pre-hardened steels like S136H, H13, etc. This ensures long-term dimensional stability and consistent operations over millions of cycles.

2. Meet Superior Surface Requirements

With 20+ years of experience for mold, we can meet superior surface quality requirements—from high-gloss mirror finishes (up to #A1) to fine textures and anti-fingerprint coatings.

3. Mold Flow Analysis to Reduce Injection Defects

Use Mold flow Analysis software at the beginning, our engineer designs a reasonable mold structure to ensure uniform filling, reduced warpage, and shorter cycle times—boosting both quality and productivity.

4. Extensive Experience with Many Kinds of Materials

We excel in molding flame-retardant and corrosive materials such as PVC. By using corrosion-resistant steels and surface enhancements, we guarantee long mold life and injection stability under demanding conditions.

We provide one-stop mold solutions—from design to production—to help our customers achieve superior product quality for their appliance housing needs.