screw cap mold

At YUCO Mold, we are committed to providing first-class screw cap mold manufacturing solutions. We undertake both mold manufacturing and screw cap mass production.

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screw cap molds from China manufacturer

screw cap mold specifications

CategorySpecificationDetails
Mold ConstructionMaterialH13 Tool Steel, P20, S136, Stainless Steel (customizable based on requirements)
 Mold TypeCold Runner, Hot Runner, Semi-Hot Runner
 Number of Cavities4, 8, 16, 32 (custom configurations available)
 Design SoftwareCAD/CAM integrated design using advanced software for precision and customization
Precision & QualityTolerance±0.005mm to ±0.01mm ensuring high precision
 Surface FinishMirror Polished, Textured Finishes, Customized Surface Treatments
 Dimensional AccuracyEnsures dimensions meet exact specifications for optimal cap fitting and performance
PerformanceInjection System CompatibilityCompatible with hydraulic and all-electric injection molding machines
 Cycle Time OptimizationDesigned for reduced cycle times (e.g., <10 seconds per cycle) enhancing production efficiency
 Cooling SystemHigh-efficiency conformal cooling channels or traditional cooling based on design requirements
 Ejection SystemPlunger, Sleeve, Brush Type ejection systems for smooth cap removal
CustomizationCap ProfilesCustom cap profiles, sizes, and thread designs tailored to client specifications
 Logo EngravingIntegrated logo and branding options on caps
 Gate TypesSubmarine, Pin, Edge Gates adaptable to specific molding needs
DurabilityHeat TreatmentHardened to HRC 50 or higher for extended mold life
 LongevityEngineered for over 500,000 injection cycles without degradation
MaintenanceEase of MaintenanceEasy access for maintenance with interchangeable inserts and modular components
 ServiceabilityOn-site technical support and training provided for efficient mold upkeep
Compliance & StandardsQuality CertificationsISO 9001 certified, complies with international quality and safety standards
 Regulatory ComplianceMeets FDA, CE, and other relevant industry regulations for food-grade and safety requirements
Support & ServicesTechnical Support24/7 technical assistance, on-site training sessions, and comprehensive after-sales support
 Lead TimeFast production lead times (typically 4-6 weeks) without compromising quality
 OEM CapabilitiesFully compatible with major injection molding machines, supporting large-scale production runs
Advanced FeaturesAutomation IntegrationCompatible with automated systems for streamlined production processes
 Smart Mold TechnologyEquipped with sensors and IoT capabilities for real-time monitoring and predictive maintenance
 Sustainability FeaturesEnvironmentally friendly materials and energy-efficient design elements

Brighten up your next plastic cap project!

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China plastic cap mold manufacturer

screw cap molding processing

Screw cap molds are high-quality injection molds designed for manufacturing bottle caps of various sizes and shapes. Injection molds usually consist of two parts. The basic structure includes a core and a cavity. The core forms the inner surface of the bottle cap, while the cavity forms the outer surface.

The main application scenario of plastic injection screw cap molds is plastic product processing plants, which are used to mass produce various plastic bottle caps. The application of these molds has greatly improved production efficiency, reduced production costs, and ensured product quality.

Materials used for screw caps

Material selection is a crucial part of the plastic bottle cap mold customization process, affecting the durability, flexibility and chemical resistance of the bottle cap. In addition, depending on the specific application requirements, YUCO MOLD will also select customized materials with special properties such as antistatic or UV resistance. These adjustments ensure that the bottle cap meets the intended use and improves performance.

PP

Polypropylene (PP) bottle caps are an ideal material for bottle and container caps as the material is both strong and easy to process. PP has good chemical and solvent resistance and is lightweight, ensuring that the caps are not too heavy and easy for consumers to handle. In addition, PP is recyclable, making it very environmentally friendly. It does not rust and can be reused or recycled. This makes it ideal for packaging food, beverages and household products, ensuring the safety and durability of the caps.

PET

Polyethylene terephthalate is known for its transparency and high hardness, making it ideal for bottle cap molding. It has good compatibility with carbonated beverages, ensuring that there is no chemical reaction between the cap and the liquid. In addition, PET is recyclable, further enhancing its application in eco-sensitive industries such as food and beverage. PET molds are used to produce the caps required to safely seal these containers.

Nylon

Nylon is a strong and flexible thermoplastic that excels in bottle cap molds that require durability and heat resistance. In applications such as automotive or electronic devices, bottle caps may be exposed to high temperatures or mechanical stress. Nylon's unique properties extend its life and functionality. Often, nylon bottle caps are combined with other materials to achieve a better locking mechanism and smoother function.

HDPE

High-density polyethylene (HDPE) is often used in child-resistant and other specialty bottle caps due to its strong sealing and excellent retention. HDPE's chemical resistance ensures that the contents of the bottle cap are not contaminated and is often used in the pharmaceutical and agricultural fields, where safety and seal integrity are critical. Its strength also ensures that molded bottle caps are durable.

Elastomers

Elastomers, such as thermoplastic elastomers (TPEs), are ideal for molds of liner caps that require flexibility and good sealing. These materials have good compressibility and can achieve a tight, leak-free and well-fitting seal. Elastomers are often used in sports bottle caps, sealed dropper caps, and other applications that require user comfort and functionality to ensure product life and performance.
yuco-screw-cap-mold

Why choose YUCO screw cap mold?

In the design and manufacturing process of bottle cap molds, material selection, design rationality of each system, and application of thread demolding technology are key factors to ensure mold performance, life and production efficiency. By optimizing these aspects, high-quality bottle cap production can be achieved to meet the needs of different batches and functions.

The first thing to consider is the size, shape and quantity of the bottle cap, as well as compatibility with different containers. YUCO can modify the mold size to accommodate a variety of container calibers, achieving a tight fit and leakproof. In addition, adjustable bottle caps can be made as needed to accommodate different container sizes for multi-packs or retail products.

The color and surface treatment of the custom bottle cap mold will affect the visual appeal and tactile experience of the bottle cap. You can choose a color that represents your brand or enhance the product appeal through aesthetic design. A variety of surface treatments, including matte, glossy and textured surfaces, can make retail products stand out on the shelf and meet industry and consumer preferences.

In addition to aesthetics, custom screw cap molds can also integrate various functional features. For example, child-resistant or tamper-proof closures can protect pharmaceuticals and hazardous materials; venting and pouring spouts are designed for applications that require controlled liquid dispensing. These functional customizations improve product safety, convenience and usability to meet the needs of different industries.

Manufacturing bottle cap molds requires a variety of materials to choose from, depending on the intended use and the type of product being produced. The choice of material affects the performance, life, and cost-effectiveness of the mold, so manufacturers can customize bottle cap molds according to specific needs. Common materials include steel, aluminum, and other alloys, each with different properties:

  • Steel: High strength, good wear resistance, suitable for mass production.
  • nickel-plated steel: In industries such as automotive or pharmaceuticals, bottle caps may be exposed to extreme temperatures or corrosive substances. Using this material can enhance oxidation and wear resistance, extend mold life, and reduce replacement frequency.
  • Aluminum: Lightweight, easy to process, suitable for small batch applications and prototyping.
  • Composite materials: As technology develops, they are gradually used to improve molding capabilities and reduce environmental impact.

For steel cavities and cores, YUCO uses imported 1.2316 stainless steel, which has high hardness, corrosion resistance, fine polishing, high mold precision, and excellent quality.

In addition, we also process the cavity and core. For example, heat treatment and machining to extend the service life. The neck screw is nitrided and, with good operation, guarantees more than 2 million injection cycles.

Mold design is critical to the final product of the bottle cap. Key factors include:

  • Gate: Common forms of gates include side gate entry and top hot runner entry. The nozzle needle is driven by pneumatics, which can open and close at high speed at the same time, and can effectively control the injection hole of each cavity. It has reliable sealing function, smooth movement, low thermal expansion rate and long service life, while saving electricity.
  • Hot runner: The hot runner system designed and manufactured by ourselves can achieve ideal and rapid heating effect, so that the cavity has a lower injection pressure and reduces the wear of mold parts.
  • Heating system: A dual heating system is adopted with independent temperature control. The heating rod is used to heat the mold main board, and the small heater continuously provides the required heating temperature for the cavity and nozzle.
  • Cooling system: Each part such as the core, cavity, valve, etc. is equipped with an independent cooling system to ensure uniform cooling of the mold, reduce product deformation, and shorten the injection cycle. Reasonable water channel diameter and uniform layout are the key.

In addition, multi-cavity molds improve production efficiency. Molding accuracy affects the functionality, aesthetics and fit of the bottle cap, especially for branded products.

Considering the overall production goals and expected output is crucial to choosing the right mold. For large-scale production, sturdy steel molds are more suitable because of their durability and long service life; while for small-scale production, softer aluminum molds are more practical. This consideration directly affects cost-effectiveness and long-term production stability, avoiding frequent mold replacement.

Cost analysis is a key factor in selecting a plastic bottle cap mold. You need to consider the cost of the mold itself as well as the expenses associated with maintenance and operation. Steel molds have a higher initial cost but are more economical in high-volume production; aluminum molds are less expensive and are suitable for small batches or prototypes. These costs need to be weighed against the expected usage of bottle caps to ensure the best overall financial and operational efficiency.

YUCO, your trusted Chinese screw cap mold manufacturer

YUCO provides more than 100 sets of bottle cap molds every year, which have been recognized worldwide. According to customer feedback, these machines run smoothly, steadily and perfectly. It not only helps customers gain business through high-quality bottle cap production, but also adds charm to the production site through its exquisite appearance.

Our mold manufacturing department can manufacture single-cavity or multi-cavity molds of different sizes. According to your product data, our engineers can provide you with a feasible solution with low price and high quality. The following demonstrates our manufacturing capabilities:

  • Maximum mold size 2500mm×2000mm×1500mm
  • Highest machining accuracy: ±0.005mm
  • Highest injection accuracy: ±0.03mm

The delivery time for each mold is 25-45 days, depending on its complexity. If you have any mold development inquiries, please send us your inquiries along with 2D and 3D drawings or samples, molding requirements are also accepted.

Tel: +86 13586040750

Available files are PDF, DWG, STL, STEP, IGES. The maximum supported file size is 50MB. For large or multiple files please place into one folder and compress into a ZIP or RAR file, or send an email with attachments to [email protected]

Contact Us To Get A Quote Today

Available files are PDF, DWG, STL, STEP, IGES. The maximum supported file size is 50MB. For large or multiple files please place into one folder and compress into a ZIP or RAR file, or send an email with attachments to [email protected]