Integrated One-Step Molding: Engineered for high-efficiency production of refrigerator freezer drawers, completing molding, core pulling, ejection, cooling, and gate trimming in a single automated cycle.
Full-Series Compatibility: Suitable for all structural drawer components across different freezer capacity specifications and door matching designs.
Corrosion-Resistant Steel: Utilizes premium corrosion-resistant tool steels such as S136 and 2316, offering superior wear resistance and erosion resistance.
High Polish & Hardness: Quenched to HRC 48–52 with mirror-finish polishing up to SPI A2 grade, ensuring smooth optical clarity for transparent drawers.
Extended Service Life: Total mold service life reaches ≥ 800,000 shots (up to 1,000,000 shots under optimal low-temperature operating maintenance).
| Parameter | Specification Details |
|
Mold Type |
Hot Runner / Cold Runner system optional |
|
Mold Steel |
Core & Cavity: S136 ESR / 2316 low-temperature tough steel Mold Base: P20 / 718H pre-hardened steel |
|
Cavity Design |
1 Cavity (1×1) or 2 Cavities (1×2) based on drawer dimensions and production capacity requirements |
|
Injection Machine Tonnage |
250T – 650T |
|
Molding Materials |
Low-temperature resistant PP, Transparent PS, ABS, AS, Food-grade Copolymer PP |
|
Mold Lifespan |
≥ 800,000 shots (up to 1,000,000 shots under standard maintenance) |
|
Cooling System |
3D conformal cooling channels + high-pressure spot cooling, temperature fluctuation ≤ ±2°C, cycle time reduced by 25% |
|
Typical Drawer Dimensions |
$300\times200\times150\text{ mm}$ ~ $500\times400\times200\text{ mm}$ |
|
Feature Integration |
Guide rail sliders, limit snaps/clips, handle mounting locations, transparent observation windows |
|
Dimensional Tolerance |
Guide rail mating surfaces: $\pm0.02\text{ mm}$ Outer contour: $\pm0.08\text{ mm}$ |
|
Flatness Requirement |
$\le 0.08\text{ mm} / 200\text{ mm}$ |
|
Food-Grade Compliance |
Compliant with GB 4806.7-2016 & FDA 21 CFR 177.1520 |


Kaishuo Technology was established in 2008 and has since developed a four-core industrial structure comprising robotics and automation equipment, new energy, precision hardware molds, and precision injection molds.
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