Balanced molds for heating, rotation, closing and demolding.
The design must take into account oven, arm, mounting, center of gravity, heat transfer, parting, venting, closing and part extraction.
Need to make a tank or a large hollow part?
A rotational mold is a closed metal mold charged with plastic powder, heated while rotating on two axes and then cooled. The plastic coats the inner walls and forms a one-piece hollow part.
To produce tanks, containers and large closed hollow bodies, seamless and with uniform walls.
When the part is hollow and large. For small or medium bottles and containers in high volume, blow molding is usually a better fit.
Fundimoldes designs and builds the mold. Tanks are then produced on a rotational molding machine, usually at the customer’s plant or their molder’s. Step by step: how to make a plastic tank.
Types and scope.
Solutions with good heat transfer and weight subject to design. Ideal for: Parts and cycles defined by the equipment.
An alternative for geometries, sizes or conditions suited to sheet metal or welded construction. Ideal for: Tanks, containers and large parts.
A combination of materials or components based on thermal, structural and maintenance needs. Ideal for: Special projects.
Tooling for hollow volumes and storage applications. Ideal for: Industry, agriculture and consumer goods.
Hollow geometries with specific surfaces and closures. Ideal for: Plastic furniture and industrial components.
Technical data sheet.
Rotational molding in metal molds; heat transfer
Subject to your rotational molding machine and oven
Aluminum, steel or combinations depending on volume and weight
Dimensional control, closing and demolding test
Actual capacity subject to technical validation based on geometry, weight, material, tolerances and process.
How we work.
We review volume, expected wall thickness, material, texture, inserts and end use.
We validate oven, swing envelope, arm, mounting plate, mounting, load and cycle.
We define parting lines, closures, vents, structure, handling and finish.
We produce the mold in aluminum, steel or a combination depending on the project.
We verify closing, mounting, demolding and dimensional control according to scope.
Technical considerations.
The overall envelope of the mold and its hardware must fit and rotate without interference.
Weight, center of gravity and mounting affect safety and behavior during rotation.
Thickness, material and structure influence heating and cooling.
It must allow pressure equalization without contaminating or marking the part.
Why Fundimoldes?
Engineering, patternmaking, casting, machining, assembly, finishing, validation and after-sales support under one operation.
Every proposal is backed by a review of geometry, material, process, equipment and real-world conditions.
Drawings, data sheets, reports and inspections are included according to project scope.
Fundimoldes can manufacture, maintain, repair, modify and reproduce tooling components.
Information for your quote.
Reply within 24 business hours via WhatsApp +57 321 227 8823.
Common questions.
Do you make molds for tanks and containers?
Yes, as well as hollow parts, furniture and industrial components.
What material do you use?
Aluminum, steel or combinations depending on volume, weight, cycle and equipment.
Can you adapt the mold to my arm or mounting plate?
Yes. We need drawings or measurements of the mounting, envelope and machine capacity.
Do you include a closing system?
The mold includes a closing and demolding system according to design.
Services for your rotational mold.
Parting line, venting, heat transfer and mounting in 3D CAD.
Machining of closures, flanges and mold surfaces.
Fabrication and repair of metal frames and components.
Closure, parting line and venting adjustment of molds in production.
If your part is a smaller bottle or container.
Send dimensions, capacity, fittings and expected quantity.
We design your rotational molding mold
Share drawings, a 3D model, photos, dimensions, material, quantity and operating conditions. Our technical team will validate the manufacturing route and scope.