Two Wing Mold-Plastic Injection Mold Manufaturer

We understand the challenges faced by the home appliance industry

The most troublesome issue for home appliance customers

Challenge	Description	The answer from the two-wing
The appearance requirements are extremely high	The panel and shell must be free of weld lines, shrinkage, flow marks, and orange peel, and it is best to avoid painting	High-gloss and seamless (RHCM) molds + mold flow analysis to predict defects
Under high cost pressure	with thin profit margins for individual products, the mold amortization should be low, and the unit price for injection molding should be economical	The multi-cavity design, combined with hot runner and automation solutions, can shorten the molding cycle
Large shipment volume	Once the mold is opened, it produces hundreds of thousands or even millions of parts, so the mold life must be sufficient	Mold base/mold core steel material upgrades + regular maintenance are necessary to ensure 1 million mold cycles
Material requirements are complex	kitchen appliances need to be resistant to oil stains, outdoor appliances need to be UV-resistant, and small appliances need to be flame-retardant	We have extensive experience in the application of modified materials (ASA/ABS/PC/PP/PA, etc.)
Short project cycle	new products are launched quickly, and mold development is measured in weeks	Standard mold base + quick-change inserts, with a 45-day delivery for T0 (depending on complexity)

✅ We don't promise to be the "cheapest", but we promise to offer better cost-effectiveness for the same quality, and better cooperation for the same price.

Typical household appliances and our mold solutions

Experience summed up from years of production experience

Home appliance category	Typical parts	Materials	Mold technology key points	Two-wing advantage
Cleaning appliances	Dust box, shell, and roller brush cover of floor-sweeping robot	ABS / Anti-static ABS	Appearance: Sparkle pattern or high gloss. Assembly dimension: ±0.05mm	Multi-cavity one-to-two/one-to-four, cycle time ≤35 seconds
Kitchen appliances	Air fryer window, rice cooker handle, blender cup base	PC / PP / PA	High-gloss transparent, dual-color rubber coating, high temperature resistance	High-gloss seamless (electric heating or steam heating)
Environmental appliances	Humidifier water tank, purifier shell	Transparent PC/ABS	High-gloss transparent without bubbles, sealing surface leak-proof	Uniform mold temperature control + optimized gate position
Refrigeration appliances	Refrigerator drawers and door shelves	Transparent SAN/PP	High-gloss transparency, dimensional stability, and low-temperature resistance	Conformal cooling water channels to reduce warping and deformation
Clothing care	Washing machine control panel, iron handle	High-gloss ABS/PC/ABS	High-gloss black, resistant to detergents	Direct molding without spraying, saving secondary processing
Small household appliances	Blower blades, internal gears of coffee machines	POM / PA66+GF	Wear resistance, dynamic balance	Precision mold cavity, dynamic balance measurement assistance

Our three core technologies

Solve various problems encountered by users during use

1. Reflective High-Gloss Continuous Molding (RHCM)

✅Solution: weld lines, flow marks, orange peel, and floating fibers

✅Method: Rapidly heat the mold to 140℃ (via steam or electric heating), and then quickly cool it after injection molding

✅Effect: The surface achieves a mirror-like finish (Ra≤0.05μm), allowing direct use without spraying, which is environmentally friendly and cost-effective

✅Typical applications: black high-gloss panels, transparent windows

2. Multi-cavity high-efficiency mold

✅Standard: one input to two outputs, one input to four outputs (medium enclosure)

✅Small parts: one-to-eight, one-to-sixteen (such as buttons)

✅Effect: The molding cycle for a single piece is shortened by more than 20%, resulting in reduced labor costs

✅Note: We will not blindly pursue 256 cavities, but will determine the optimal number of cavities based on the equipment and product structure

3. Weather-resistant material solution

✅Outdoor or kitchen environment: ASA is recommended (as a substitute for ABS, with UV resistance and no yellowing)

✅Long-term heat resistance: PA66+GF, PBT

✅High-gloss non-spray coating: PMMA or high-gloss ABS

✅We recommend materials based on customer usage scenarios and provide mold testing for verification

Quality Assurance

We have obtained ISO 9001:2015 certification and strictly adhere to the system requirements.
For special requirements of home appliance customers (such as RoHS, REACH), we can provide material compliance declarations.

Project	Our Approach
Mold dimensions	Conduct a full inspection using CMM and retain the FAI report
Injection molding first part	Full-size measurement + appearance inspection
Mass production inspection	2 hours per inspection, focusing on key dimensions and appearance, with records kept on file
Mold life	Maintain every 50,000 mold cycles, and record the mold cycles
Before shipment	Each box undergoes a visual inspection and is labeled with the batch number
Customer complaint handling	24-hour response, providing a corrective action report (8D)

Why are home appliance customers willing to choose Shuangyi?

Our company provides users with one-stop feasible solutions.

Advantages	Description
✅ Rich experience in appearance parts	We have accumulated over 100 sets of home appliance molds, with a high proportion of appearance parts accounting for 40%
✅ Cost transparency	The mold quotation breaks down into individual parts, steel materials, hot runners, and mold testing fees, with no hidden costs
✅ Quick response	DFM report within 48 hours, mold modification within 24~72 hours, weekly project report
✅ One-stop service	Mold + injection molding + post-processing (screen printing, pad printing, ultrasonic welding, assembly)
✅ Welcome to our factory inspection	Feel free to visit our CMM, injection molding machine, and mold processing sites at any time

Typical cooperation case

For clients who are cooperating with us for the first time, you can refer to the case studies

Case 1: Dust box mold for robot vacuum cleaner (exported to Germany)

One-to-two, ABS + antistatic modification

Requirements: The interior should be smooth without dead spaces and have good sealing performance

Result: The T0 trial mold passed the test on the first attempt, and 800,000 pieces have been mass-produced without mold repair

Case 2: Transparent PC window for air fryer

One-to-two, high gloss and seamless, with a light transmittance of ≥92%

Requirements: no bubbles, no rainbow pattern, high temperature resistance up to 180℃

Result: CPK 1.35, customer-directed exemption from random inspection

Case 3: Three-color dishwasher mold

One-to-two, high-gloss ABS, no need for painting

Requirements: No weld marks, resistant to detergent testing

Result: Molds exported to Brazil, with a batch pass rate of 99.5%

Common Issues in the Home Appliance Industry and Our Solutions

If you don't find your question here, feel free to consult us.

Problem	Reason	Solution for two-wing
Panel weld lines	Multiple gate convergence	Mold flow analysis to adjust the position/number of gates, or use high-gloss mold temperature
Bubbles in transparent parts	Trapped gas or material not dried	Add exhaust slots, mandatory drying equipment (dew point -40℃)
Dimensional shrinkage	Insufficient packing pressure, or uneven wall thickness	Optimize the packing pressure curve and recommend that the customer adjust the product wall thickness
Deformation and warping	Uneven cooling	3D conformal water channel design, mold temperature zoning control
Yellow appearance	High material temperature or long residence time	Use heat-resistant materials and control the screw speed

Ways to cooperate with us

Standardized processes ensure efficient communication with every customer

Cooperation Process

1

Provide 3D drawings (STEP/IGS/X_T) or 2D drawings + technical requirements

2

Within 48 hours: We will provide a DFM analysis, a mold quotation, and a capacity estimation

3

Confirm cooperation: sign contract → initiate design → weekly progress report

4

T0 mold testing: Provide 5~10 pcs of samples (can be mailed)

5

Small batch verification: 1k~5k pieces, to confirm process capability

6

Mass production & post-processing: Provide injection molding + assembly according to customer needs

additional services

We can assist customers in optimizing product design (reducing weight, improving wall thickness, and reducing mold complexity)

In the later stage, we can undertake mold transfer, repair, and mold replication