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Introduction
Plastic hollow balls are lightweight, cost‑effective spherical components widely used across industries—from fluid control systems to cosmetic dispensers. Designed with a thin, consistent wall and precisely engineered to exacting tolerances, a well‑manufactured plastic hollow ball delivers reliable performance, chemical resistance, and long service life. In this guide, we’ll explore what makes plastic hollow balls unique, review material options, detail the production process, outline key application scenarios, and provide actionable tips to help your page rank for “plastic hollow ball” on Google’s first page.
What Is a Plastic Hollow Ball?
A plastic hollow ball is a sphere with a hollow center, typically ranging in diameter from 6 mm to over 100 mm. Unlike solid plastic spheres, these hollow variants reduce weight and material cost while still offering sufficient structural integrity for many uses. Common wall thicknesses vary between 0.5 mm and 3 mm, depending on application requirements. Hollow construction also provides predictable buoyancy characteristics—essential for floatation and level‑sensing devices.
Material Options and Properties
Material Options and Properties
Selecting the right resin for your plastic hollow ball is critical:
High‑Density Polyethylene (HDPE):Excellent stiffness and chemical resistance, ideal for food‑grade and chemical storage float balls.
Polypropylene (PP):Superior temperature tolerance (up to 100 °C) and good impact strength, frequently used in hot‑fill beverage dispensers.
Low‑Density Polyethylene (LDPE): Greater flexibility and impact absorption, well suited for shock‑buffering or soft‑touch applications.
Acrylonitrile Butadiene Styrene (ABS): Higher rigidity and surface finish, occasionally chosen for decorative or precision mechanical uses.
Each material brings its own balance of tensile strength, chemical compatibility, and cost. Your choice will depend on factors like operating temperature range, exposure to solvents, and required lifespan.
Customization, Sizes & Tolerances
Customization, Sizes & Tolerances
As a leading plastic hollow ball manufacturer, we offer fully customizable solutions:
Diameter Range: 6 mm – 100 mm standard; larger sizes available on request.
Wall Thickness: 0.5 mm – 3 mm to control buoyancy and strength.
Dimensional Tolerance: ± 0.05 mm roundness for critical applications; ± 0.1 mm for general use.
Surface Finish:Mirror‑polished, matte, or texturized finishes to suit aesthetic and functional needs.
OEM and bulk clients benefit from short lead times (3–7 days for stocked items; 10–14 days for fully customized tooling) and comprehensive testing certificates.
Precision Manufacturing Process
1. Mold Design & Tooling
We use precision‑machined steel molds with mirrored cavities, ensuring uniform wall thickness and surface quality.
2. Injection & Rotational Molding
Small to Medium Sizes: Injection molding combined with internal air‑blow or rotational vibration spreads molten resin evenly.
Large Sizes:Rotational molding evenly coats the interior of the mold in an oven, creating seamless, uniform walls.
3. Ball Grinding & Polishing
Post‑molding, each hollow ball is processed in our ball grinding machinery to remove flash, correct minor out‑of‑roundness, and achieve the specified surface finish.
4.Cooling & Automated Inspection
Water‑jacketed molds and precision cooling racks prevent warping. Automated laser micrometers verify diameter and roundness on 100% of parts.
5. Leak & Pressure Testing
Random samples undergo submersion or air‑pressure tests (0.1–0.3 bar) to guarantee no leaks and full integrity.
Quality Assurance & Certification
Quality Assurance & Certification
Quality control is integral at every step:
Incoming Resin Inspection: Melt flow index, density, and moisture content checks.
In‑Process Monitoring:Real‑time dimensional data capture.
Final Audit:Batch traceability, production logs, and material certificates (ISO 9001, FDA‑compliant grades for food and cosmetic use).
Sample Approval:Customers can request free prototypes to verify fit, finish, and performance before placing bulk orders.
Key Application Scenarios
Key Application Scenarios
Fluid Level Sensors & Float Switches:Predictable buoyancy for water treatment, oil tanks, and cooling systems.
Cosmetic & Roll‑On Packaging:Smooth, leak‑free fluid dispensing in deodorants, perfumes, and skincare rollers.
Mixing & Agitation Media: Lightweight, inert mixing balls for chemical reactors, tumblers, and pigment dispersion.
Light‑Duty Bearings & Spacers:Low‑friction support in robotics, small‑scale conveyors, and precision assembly fixtures.
In each case, a correctly specified plastic hollow ball delivers reliability, chemical stability, and cost savings.
Contact information
Contact information
Company name：Shantou Chengrui Machinery Manufacturing Co., Ltd.
Company name：Shantou Chengrui Machinery Manufacturing Co., Ltd.
Website: http://www.stchengrui.com
Website: http://www.stchengrui.com
Address：No.145,Qishan Zhaitou Zhongwei Industrial Zone, Jinping District,Shantou City,China
Address：No.145,Qishan Zhaitou Zhongwei Industrial Zone, Jinping District,Shantou City,China
Tel: 0754-87276891
Fax: 0754-87276891
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