PU Stress Ball Making Machine & Complete Production Line
Yongjia's PU stress ball making machine line combines polyurethane raw-material handling, metering and mixing, multi-cavity molds, curing or drying, demolding, and process setup for PU foam stress balls. The line configuration is selected around the ball shape, diameter, weight, target density and rebound, colors, required hourly output, and local voltage. This page explains the complete production process, machine choices, mold capacity, and the information needed for a quotation.
Yongjia stress ball production line
Yongjia's stress ball production line covers raw material batching, metering and mixing, mold pouring, curing or drying, and demolding. A multi-cavity mold lets one metered shot cycle form several parts. Final foam density, rebound, surface finish, and cavity-to-cavity consistency must be checked against an approved sample and confirmed engineering settings before production. Custom molds, process setup, and after-sales support are available; the exact scope and warranty are stated in the quotation.
How a Stress Ball Making Machine Line Works
- Raw material batching. Prepare the specified polyol system and isocyanate. The operator checks material identity, storage condition, and batch traceability. The output is a controlled material batch ready for metering.
- Metering and mixing. The foaming machine meters and mixes the components. The operator controls the approved ratio, material condition, and shot repeatability. The output is a defined mixed shot for the mold.
- Multi-cavity mold pouring. Dispense the mixed material into the aluminum multi-cavity mold. The operator controls the shot and fill pattern for the approved ball geometry. The output is a consistently filled mold.
- Curing or drying. Hold the filled mold under the validated process and use the configured curing or drying stage. Time and temperature are set from sample trials, not copied from another product. The output is a sufficiently cured part ready to demold.
- Demolding and inspection. Remove the balls and inspect fill completeness, surface finish, density or rebound, and cavity-to-cavity consistency against the approved sample. Accepted parts then move to any specified finishing and packing steps.
Stress Ball Making Machine Configuration
| Item | Low-pressure line | High-pressure line | How to choose |
|---|---|---|---|
| Foaming machine type | Low-pressure metering and mixing | High-pressure metering and mixing | Select after sample trials and engineering review. |
| Output / shot range | Confirm for your ball size and density | Confirm for your ball size and density | Match the shot range to total cavity fill per cycle. |
| Mixing ratio range | Confirm for your formulation | Confirm for your formulation | Use the validated polyol/isocyanate formulation. |
| Tank volume | Confirm for your batch and shift plan | Confirm for your batch and shift plan | Size around consumption, color changes, and cleaning plan. |
| Mold cavities | Confirm for your ball size and density | Confirm for your ball size and density | More cavities only help when filling and curing stay consistent. |
| Cycle time | Confirm by sample trial | Confirm by sample trial | Depends on formulation, ball geometry, mold, and curing conditions. |
| Estimated balls / hour | Calculate from confirmed cavities, cycles, and good-part rate | Calculate from confirmed cavities, cycles, and good-part rate | Do not compare capacity until all three inputs are verified. |
| Compressed air | Confirm for the selected machine and auxiliaries | Confirm for the selected machine and auxiliaries | Check available pressure and flow at the installation site. |
| Nitrogen | Confirm with the formulation and machine design | Confirm with the formulation and machine design | Include only when the approved process requires it. |
| Power / voltage | Built for the confirmed local supply | Built for the confirmed local supply | Provide voltage, frequency, and phase with the inquiry. |
| Line footprint | Confirm after layout review | Confirm after layout review | Depends on machine, mold handling, curing, and material flow. |
| Operators | Confirm from the agreed automation and handling scope | Confirm from the agreed automation and handling scope | Review loading, demolding, inspection, and packing tasks. |
Which Machine Should You Choose?
Start with three purchasing conditions: the target ball weight and size, the required balls per hour, and how often the line must change colors or molds. Consider a low-pressure configuration when its confirmed shot range fits the proposed multi-cavity mold and flexible color or mold changes are important. Consider a high-pressure configuration when the verified shot and output requirement, production plan, and approved formulation justify it. Final selection follows a sample trial and engineering review.
Quotation checklist: ball shape, diameter, weight, density or rebound target, colors, logo requirements, hourly output target, and local voltage, frequency, and phase.
Stress Ball Production Line
See the PU stress ball making machineYongjia stress ball Mold
Yongjia's stress ball molds feature a single-mold, multi-cavity design and are manufactured from high-strength aluminum. This lightweight material conducts heat quickly, ensuring uniform foaming and high molding efficiency. Precision-machined and anti-stick treated mold surfaces create smooth, resilient products, making them suitable for high-volume, continuous production of high-quality pressure balls.
How to Estimate Stress Ball Production Capacity
Use the same transparent formula for either machine configuration: mold cavities × completed cycles per hour × good-part rate = estimated balls per hour. For example, once engineering confirms the cavity count, completed cycles per hour, and trial good-part rate for your ball, multiply those three verified inputs. We do not state a balls-per-hour figure before ball size, density, mold design, cycle, and sample results are confirmed.
What Is Included in the Complete Line?
The quoted scope is confirmed item by item. No component is assumed to be standard, optional, or customized until it is listed in the quotation.
- PU foaming machine: configured to the approved formulation, shot requirement, and local electrical supply.
- Multi-cavity molds: customized to the ball shape, diameter, logo, surface, and cavity plan.
- Curing or drying: included in the proposed scope when required by the validated process and production layout.
- Demolding: manual, assisted, or automatic handling is selected and quoted after the mold and output plan are confirmed.
The production-line image on this page shows the stress ball making machine line context; the final equipment and layout are confirmed for each project.
stress ball mold
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Stress Ball Making Machine FAQ
Can one line make different stress ball shapes?
A line can be configured for different custom mold sets. Each new shape, diameter, logo, cavity layout, and demolding method must be checked with engineering before the mold and process are confirmed.
What raw materials are required?
The process uses a polyurethane system based on polyol and isocyanate components. The exact formulation, ratio, additives, colors, storage conditions, and safety controls must be confirmed for the target density and rebound; do not copy settings from another foam product.
How do I estimate production capacity?
Multiply confirmed mold cavities by completed cycles per hour and the verified good-part rate. Ball size, density, formulation, mold design, curing conditions, and demolding all affect those inputs.
What information is needed for a quotation?
Send the ball shape, diameter, weight, density or rebound target, colors, logo requirements, hourly output target, and local voltage, frequency, and phase. A physical sample or drawing helps define the mold and sample trial.
Do you supply molds and process setup with the machine?
Yongjia offers custom stress ball molds, process setup, and after-sales support with the machine line. The exact equipment, formulation work, sample trial, commissioning, training, and warranty scope are confirmed in the quotation.