Custom Thermoforming Aluminium Mold for Clear PET Round Cake Container with Mirror Polishing Cavity

Place of Origin:Shenzhen, China
Brand Name:HXW Mold
Certification:ISO 9001
Minimum Order Quantity:1 Set
Price:Negotiable
Payment Terms:60% T/T Deposit,40% Balance Before Shipment
Product Details
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Custom Thermoforming Aluminium Mold

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Clear PET Round Cake Container Mold

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Mirror Polishing Aluminium Thermoforming Mould

Shaping Mode: PositiveNegative Pressure Thermoforming
Surface Treatment: Polishing / Mirror Polishing / Hard Anodizing / PTFE Coating / Sandblasting
Tolerance: 0.03mm -0.05mm, Depending On The Component
Sheet Thickness: As The Customer's Demand
Mold Material: 6061 Aluminum; 7075 Available When Required。
Mold Type: Thin-Wall Container Thermoforming Mold
Service: DFM, Mold Design, Manufacturing And In-House Trial
Product Application: Thin-wall Cups, Bowls, Trays And High-output Food Containers
Forming Process: Positive-negative Pressure Forming
Sheet Material: PET
Cooling System: Integrated Cooling Channels For Stable Mold Temperature And Cycle Control
Cutting Method: Steel Rule Die Cutting
Stacking Method: Mechanical Down Stacking
Lead Time: About 5 Weeks After Deposit And Final Drawing Approval
Product Description
Product Overview

This custom thermoforming aluminium mold is specially developed for clear PET round cake container production. The circular cavity is precisely machined with a uniform radial draft angle, ensuring even stretching of the PET sheet during forming. The finished round cake containers maintain excellent transparency and a smooth curved surface, and are widely used for whole round cakes, mousse, cheesecake and bakery takeaway packaging.

We customize cavity diameter, depth and rim structure according to your round container drawings. Premium aluminium material delivers stable thermal conductivity, suitable for continuous PET sheet forming. The mold supports prototype single-cavity testing and mass multi-cavity production, helping bakery manufacturers produce crystal-clear round cake containers with consistent roundness.

Mold Type Custom Thermoforming Aluminium Mold for Clear PET Round Cake Container
Core Advantage Precise Round Cavity, Uniform PET Stretching
Suitable Sheet Clear PET Plastic Sheet
Service Scope Custom Diameter & Multi-cavity Circular Layout
Engineering Focus

Round PET cake containers require uniform radial stretching to avoid wall thickness deviation. This aluminium mold achieves smooth forming and high clarity for circular transparent packaging.

  • 01 Precision CNC Machined Circular Cavity

    CNC machining guarantees high roundness and a smooth curved wall. The radial draft angle is evenly distributed so the PET sheet stretches uniformly without local thinning during thermoforming.

  • 02 High-gloss Polished Cavity Wall

    Fine polishing is applied across the entire circular cavity and rim. No surface defects transfer to the PET sheet, so finished round cake containers keep a crystal-clear appearance for product display.

  • 03 Circular Symmetrical Cooling Channels

    Cooling pipes are arranged symmetrically around the round cavity. Balanced cooling speed across the whole circle reduces shrinkage differences and keeps perfect roundness after demoulding.

  • 04 Modular Round Cavity Array Design

    Multiple circular cavities are arranged in a compact array based on the machine platen. Optimized spacing ensures stable forming, easy demoulding and high output for mass production.

Information Required for Customization

Send your round cake container drawings and PET sheet specifications, and we will manufacture a custom aluminium thermoforming mold for your clear PET round cake boxes.

  • Round Container 2D/3D Drawings Diameter, depth, rim size and wall thickness.
  • PET Sheet Information Sheet thickness, grade and forming temperature.
  • Expected Cavity Quantity Single cavity for sampling or multi-cavity for mass production.
  • Thermoforming Machine Spec Platen size, stroke and clamping parameters.
Product Gallery
Frequently Asked Questions
What is the key point for forming clear PET round cake containers?

The core is uniform radial stretching. Our CNC machined round cavity and symmetrical cooling design avoid uneven wall thickness and guarantee a perfect round shape and high PET transparency.

Can you make different diameters for round PET cake containers?

Yes, diameter, depth and rim structure are fully customizable. Send your drawings and we will design and machine the round cavity to match your target round cake container dimensions.

Is this mold only suitable for PET sheets?

This mold is optimized primarily for clear PET. It can also run PP sheet with minor adjustments to the mold surface treatment and forming parameters.

Will the round PET container deform after cooling?

Symmetrical circular cooling channels ensure even temperature distribution around the cavity. This reduces uneven shrinkage and effectively prevents oval or warpage issues in finished round containers.

What documents should I provide to get a mold quotation?

Please provide round cake container 2D/3D drawings, target wall thickness, PET sheet specifications and thermoforming machine platen size for a precise quotation.

Get a Quote for a Custom Clear PET Round Cake Container Mold

Submit your round cake container drawings and PET sheet parameters. Our engineering team will design a custom thermoforming aluminium mold and provide a factory price for your round bakery packaging project.

Overall Rating
5.0
Based on 50 reviews recently
Rating Snapshot
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All Reviews
P
P*rfrom Australia
Jul 1.2026
A reliable supplier for customized thin-wall container mold projects. Communication was efficient, technical questions were answered quickly, and the whole process was handled in a professional way. From discussing requirements to confirming the mold details, the cooperation experience was smooth and organized.
T
T*rfrom Germany
Jun 3.2026
The engineering support for this PET lid mold project was very helpful. The supplier communicated clearly about cavity layout, forming details, and mold structure, and they provided practical suggestions during the development stage. This made the project easier to move forward and gave us confidence in the final tooling solution.
P
P*rfrom United States
May 6.2026
We are pleased with the overall quality of this multi-cavity mold for PET cake lids. The machining looks clean, the cavity arrangement is well designed, and the mold structure appears solid and reliable. For thin-wall lid production, consistency between cavities is very important, and this tooling gives us a professional impression.
Product Summary

Product Overview This custom thermoforming aluminium mold is specially developed for clear PET round cake container production. The circular cavity is precisely machined with a uniform radial draft angle, ensuring even stretching of the PET sheet during forming. The finished round cake containers ...

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