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Precision Stavax High Hardness Mold Core Plate for Daily Packaging Plastic Injection
12-Cavity Precision Mold Cavity Plate for Plastic Cap Injection Molds
Designed for high-output cap production, this 12-cavity precision mold cavity plate is a core component on the fixed side (cavity side) of an injection mold. It forms the outer surface of plastic caps and closures while supporting consistent part quality across all cavities—critical for packaging lines where dimensional repeatability and cycle stability directly impact scrap rate and throughput.
Our cavity plates are built for demanding industries such as cosmetic packaging, food & beverage closures, and pharmaceutical packaging, where molds often run long cycles and require reliable corrosion resistance, wear performance, and high-quality surface finishing.
Product Description
A cavity plate (also called a cavity block) integrates multiple cavity impressions into one precision-machined plate. In a 12-cavity cap mold, this plate typically works with corresponding core inserts/cores on the moving half to create the complete cap geometry.
What this cavity plate does:
Defines the external contour and cosmetic surfaces of the cap/closure
Ensures cavity-to-cavity consistency (critical for cap fit, sealing performance, and assembly)
Provides stable interfaces for gating/venting features, cooling layout, and mold alignment
Supports high-cycle production with optimized steel selection and heat treatment
Common design features:
12 cavity pockets arranged for balanced production
Precision-machined mating and reference surfaces for repeatable assembly
Multiple mounting and alignment holes for secure installation in the mold stack
Localized gate/vent points near each cavity
Material options (typical for cap molds):
Material selection depends on resin, cycle time, and environmental corrosion risk:
Tight control on critical sealing and cosmetic surfaces
Verification of flatness, parallelism, and datum relations
Final achievable tolerance and finish depend on part design, steel grade, heat treatment route, and the customer's inspection standard. We manufacture to your drawing and inspection requirements.
Customer Value for High-Cavity Cap Molds
Lower Scrap, Higher Output
In high-cavity molds, small variation becomes big cost. A precision cavity plate improves cavity balance and dimensional repeatability, reducing flash, short shots, and mismatch issues.
More Consistent Cap Fit & Sealing
For caps, consistency isn't cosmetic only—it's functional. Stable cavity geometry supports thread engagement, snap-fit consistency, and sealing reliability.
Longer Mold Life & Easier Maintenance
Using appropriate steels and controlled heat treatment helps resist wear and corrosion, extending service life. A well-made cavity plate also supports faster maintenance and better interchangeability.
Better Appearance for Consumer Packaging
Surface quality impacts gloss, flow marks, and part ejection behavior. Proper finishing helps produce clean, premium-looking caps at scale.
What We Need for Quotation
To quote accurately and quickly, please share:
2D drawing + 3D file (STEP/IGES preferred)
Required steel grade (or application details for recommendation)
Target hardness and any surface treatment/coating requirements
Required tolerances and surface finish/polish grade
Mold information: cavity count, gating type, mold base interface requirements
Expected resin type and production conditions (optional but helpful)
Quantity and delivery expectations
If you don't have full specs yet, send what you have—our engineers can propose practical options for steel, heat treatment, and finishing.
Frequently Asked Questions
What is a cavity plate in an injection mold?
A cavity plate (cavity block) is a mold component on the fixed side that contains one or multiple cavity impressions and forms the outer surface of the molded part.
What's the difference between a cavity plate and a cavity insert?
A cavity plate often integrates multiple cavities into one plate, while cavity inserts are removable individual inserts. Choice depends on mold design, maintenance strategy, and cost.
Can you manufacture according to our standards (HASCO/DME, etc.)?
Yes. We manufacture to customer drawings and can follow common mold base standards when provided (hole patterns, datums, fit requirements).
Do you provide inspection reports?
Yes. We can provide dimensional inspection reports based on the critical dimensions and your requested inspection method.
Why is cavity-to-cavity consistency critical for cap molds?
Because caps require reliable fit and sealing. Variations across cavities can cause leakage, assembly issues, and customer complaints—especially at high output.
Which steel is best for a cap mold cavity plate—S136/1.2083 or H13?
S136/1.2083 (stainless) is preferred when corrosion resistance and polishing are important. H13/1.2344 may be chosen for toughness/wear when corrosion exposure is low. Selection depends on resin, environment, cleaning agents, and surface finish requirement.
Can you support hot runner cap molds?
Yes. Cap molds commonly use hot runner gating. Provide gating details and interface requirements so we can machine the correct features and datums.
Engineering Version
Send us your 3D/2D files and molding requirements. Our engineers will review steel selection, heat treatment, and finish options—and provide a manufacturing proposal optimized for 12-cavity cap mold stability and long service life.
