8-Cavity Wide Mouth Cap Mold – Versatile Solution for Large-Diameter Closures-Bottle Cap Mould-Taizhou Gutewei Mould Co., Ltd.

8-Cavity Wide Mouth Cap Mold – Versatile Solution for Large-Diameter Closures

Why Choose Gutewei 8-Cavity Wide Mouth Cap Molds?

Specialized Design: Engineered specifically for large-diameter closures with optimized flow and cooling characteristics.
Premium Materials: High-quality S136, 2316, and 2344 steels ensure excellent corrosion resistance and polishability .
Valve Gate Technology: Advanced hot runner system with needle valve shut-off ensures clean gate marks and eliminates secondary operations .
Precision Tolerance: Maintains tight wall thickness tolerance (±0.075mm) for consistent cap quality .
Balanced Cavity Fill: Optimized flow design ensures uniform filling across all 8 cavities.
Quick Changeover: Designed for efficient mounting and setup on standard injection molding machines.
Comprehensive Support: Includes spare parts, technical documentation, and after-sales service.

Description

The Gutewei 8-Cavity Wide Mouth Cap Mold is a specialized injection mold designed for producing large-diameter plastic closures, commonly referred to as wide mouth caps. As a professional bottle cap mold manufacturer, we engineer this 8-cavity system to deliver precision, durability, and consistent performance for manufacturers requiring versatile production of jarcap, bottle cap, and container closures .

This injection mold is ideal for producing wide mouth caps ranging from 38mm to 120mm or custom sizes, suitable for various applications including food packaging, jars, nutritional supplements, and industrial containers . Constructed from premium-grade hardened steel such as S136, 2316, or 2344, our 8-cavity wide mouth cap molds ensure excellent wear resistance, corrosion protection, and long service life .

Key Features:

Feature	Benefit
8-Cavity Design	Ideal for medium-volume production of large-diameter caps with efficient output
Premium Steel Construction	Made from S136, 2316, 2344, or equivalent hardened steel for durability and corrosion resistance
Precision Machining	CNC-processed cavities ensure smooth surface finish and perfect sealing performance
Valve Gate Hot Runner System	Eliminates manual tail-cut operations, reduces waste, and optimizes cycle times
Balanced Flow Design	Ensures consistent fill and uniform cap dimensions across all cavities
Optimized Cooling System	Advanced cooling channels promote rapid heat dissipation and uniform cooling
Eccentricity Adjustment	Adjustable system ensures wall thickness difference <0.1mm for high precision
High Cavity Pressure Resistance	Designed to withstand high injection pressures for large-diameter closures
Flexible Customization	Available for various thread types, sealing designs, and cap heights

Technical Specifications:

Parameter	Details
Cavity Number	8 Cavities
Cap Diameter Range	38mm - 120mm (custom sizes available)
Mold Base	Precision machined P20 or stainless steel base
Runner System	Valve gate hot runner system
Cavity/Core Material	S136, 2316, 2344 with HRC 48-55
Core Hardness	52-55 HRC
Cavity Hardness	50-52 HRC
Ejector System	Ejector plate + ejector sleeve
Wall Thickness Tolerance	±0.075mm - ±0.1mm
Mold Lifespan	1-2 million shots or 5-6 years with proper maintenance
Cycle Time	Optimized based on cap size and material
Injection Machine	Compatible with various standard injection molding machines

We exclusively use premium corrosion-resistant stainless steels such as Assab S136 (Sweden) and Groditz M340 (Germany). Combined with deep vacuum nitriding, surface hardness exceeds HV1000°, with mirror polishing up to Ra≤0.015μm. We guarantee a mold life of over 3 million shots.
Standardized with our in-house developed pneumatic valve gate hot runner system. Multi-zone independent temperature control keeps fluctuation ≤±1℃, preventing material degradation. The gate is automatically sealed after injection, creating a "gate-cut-free" preform that requires no manual trimming — achieving true zero-waste production.
Our 3D conformal cooling channels, designed based on ANSYS simulation, eliminate hot spots and increase cooling efficiency by over 30%. By optimizing the mold structure and injection process, we achieve an injection cycle time of under 10 seconds, significantly boosting your production capacity.
Perfectly compatible with major global injection molding machine brands: HUSKY, NETSTAL, SACMI, KRONES, DEMAG, and all major Chinese manufacturers. Standard interface design for plug-and-play operation.

Gutewei Bottle Cap Mold Product Range

Category	Cap Type	Description
Water & Beverage Caps	26/22mm Water Cap Mold	Standard flat-top or sports cap for bottled water
	28/25mm CSD Cap Mold	High-pressure resistant cap for carbonated drinks
	38mm Juice Cap Mold	Wide mouth cap for juice and functional drinks
Oil Caps	Flip-Top Oil Cap Mold	Convenient flip-top design for cooking oil
	Spout Cap Mold	Built-in spout for easy pouring and resealing
	Aluminum Foil Liner Cap Mold	For induction sealing applications
Cosmetic & Lotion Caps	Screw Cap Mold	Standard threading for cosmetic bottles
	Disc Top Cap Mold	One-handed dispensing for lotions and soaps
	Pump Cap Mold	For lotion pumps and sprayers
	Flip-Top Dispensing Cap Mold	Popular for shampoo and body wash
Pharmaceutical Caps	Child-Resistant Cap Mold	Push-and-turn or squeeze-and-turn safety designs
	Tamper-Evident Cap Mold	Visible breakable bands for security
	Dropper Cap Mold	For essential oils and medical liquids
Carbonated Drink & Beer Caps	PCO 1810 / 1881 Cap Mold	Industry-standard for carbonated beverages
	28mm Beer Cap Mold	Compatible with glass bottles and crown caps
	High-Pressure Cap Mold	Reinforced for high internal pressure
Wine & Spirit Caps	Aluminum Screw Cap Mold	For wine and spirits packaging
	Plastic Screw Cap Mold	With or without foam liners
	Tamper-Evident Wine Cap Mold	Ensures product safety and authenticity
Chemical & Industrial Caps	Heavy-Duty Screw Cap Mold	For chemical containers and jerry cans
	Vent Cap Mold	For pressure release applications
	Child-Resistant Chemical Cap Mold	For household cleaners and industrial chemicals
Special Caps	Push-Pull Sports Cap Mold	For sports drinks and on-the-go hydration
	Hinged Cap Mold	One-piece design with integrated hinge
	Dispensing Cap Mold	For sauces, honey, and condiments
	Multi-Layer / Lined Cap Mold	With built-in gaskets or liners
Preforms & Custom Molds	PET Preform Mold	For preforms used in bottle blowing
	Custom Closure Mold	Designed according to client samples or drawings

Customized Solutions & Fast Turnaround We pride ourselves on our ability to deliver tailor-made tooling solutions. Whether you require a standard design or a fully customized mold for a unique cap specification, our experienced engineering team works closely with clients to meet exact requirements. From initial concept and mold flow analysis to trial runs and mass production support, we ensure a seamless manufacturing process.