1*2 Cavity Injection Plastic Mold for Handle PC for Transparent Lens

1*2 Cavity High-Precision Injection Molds for Lenses & Transparent Plastic Components

1*1 PC Material Large Side Gate S136H Steel Light-transmitting Surface High-Precision Lenses Transparent Plastic Components Injection Mold

This is a 1×1 single-cavity high-precision injection mold, custom-built for manufacturing light-transmitting PC (polycarbonate) transparent lens components. Designed with a large side gate runner system, the mold uses premium S136H stainless steel for both cavity and core, optimized for ultra-smooth light-transmitting surfaces and high-volume production of clear optical plastic parts.

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Model:
23063
Brand:
YIXUN mold
Code:
8480419090

Product Description

Product Overview

This is a 1×1 single-cavity high-precision injection mold, custom-built for manufacturing light-transmitting PC (polycarbonate) transparent lens components. Designed with a large side gate runner system, the mold uses premium S136H stainless steel for both cavity and core, optimized for ultra-smooth light-transmitting surfaces and high-volume production of clear optical plastic parts.

Mold Technical Specifications

Parameter	Specification
Mold Configuration	1×1 single-cavity design
Runner System	Large side gate injection, optimized for transparent material flow
Molding Material	PC (Polycarbonate), light-transmitting grade
Cavity & Core Steel	S136H pre-hardened stainless steel (corrosion-resistant, polishable)
Hardness	HRC 48–52 (typical for S136H)
Surface Finish	Ultra-fine polishing for light-transmitting, defect-free optical surfaces
Application	High-precision transparent lenses, optical components, light guides, and covers

High-Precision Lenses Plastic Components Injection Mold

Key Design & Performance Advantages

1. 1×1 Single-Cavity Design for Optical Precision

The single-cavity layout eliminates flow imbalance, ensuring uniform material distribution and zero distortion for critical optical features. This setup allows for tight process control, which is essential for maintaining consistent light transmission and dimensional accuracy in transparent PC lenses.

2. Large Side Gate Runner System for Transparent PC

PC is a high-viscosity, heat-sensitive material that requires optimized flow paths:

Low shear stress: The large side gate minimizes material degradation, preventing yellowing, haze, or flow marks that ruin optical clarity.
Complete filling: Ensures full and uniform material flow into intricate lens geometries, avoiding short shots or air traps.
Reduced residual stress: Balanced pressure distribution eliminates internal stress, which is critical for preventing warpage or optical distortion in finished parts.

3. S136H Steel: The Gold Standard for Optical & Medical Molds

S136H is a premium stainless steel ideal for transparent and high-polish applications:

Superior corrosion resistance: Prevents pitting or staining from moisture or additives, ensuring long-term mold stability and consistent part clarity.
Exceptional polishability: Accepts ultra-fine mirror polishing, creating defect-free, light-transmitting surfaces required for optical lenses.
High hardness & wear resistance: HRC 48–52 hardness delivers long service life, even with repetitive high-temperature PC injection cycles.

4. Ultra-Smooth Light-Transmitting Surface Finish

The mold cavity and core are precision-polished to meet strict optical standards:

Zero surface defects: Eliminates scratches, pits, or texture that would scatter light and reduce lens performance.
Consistent clarity: Ensures uniform light transmission across the entire lens surface, critical for applications like LED covers, camera lenses, or light guides.
Easy demolding: The polished surface reduces ejection friction, preventing sticking or marring of delicate transparent parts.

5. PC Material Optimization for Optical Performance

PC is chosen for its high impact resistance, excellent light transmission, and dimensional stability. This mold is optimized to handle PC’s unique molding requirements:

Minimizes haze or discoloration through low-shear gate design and precise temperature control.
Prevents sink marks or warpage in thick lens sections.
Maintains tight tolerances for critical features like lens curvature or mounting bosses.

Application & Quality Assurance

This mold is purpose-built for high-precision transparent optical components, where clarity, accuracy, and durability are essential. Common applications include:

LED light covers and diffusers
Camera lens housings and protective lenses
Medical device viewing windows
Industrial light guides and transparent enclosures

The use of S136H steel and precision polishing ensures consistent, defect-free parts, even in high-volume production runs.

Conclusion

The 1×1 cavity PC injection mold with S136H steel and large side gate is a high-performance solution for manufacturing premium transparent lens components. Its design addresses the unique challenges of molding clear PC parts, delivering the optical clarity, precision, and long service life required for demanding applications.

Transparent Plastic Components Injection Mold High-Precision Lenses Plastic Components Injection Mold S136H Steel Light-transmitting Surface Mold