Plastic Tub Mould Manufacturer | Precision Injection Mould Tooling

Plastic Tub Mould

A well-engineered plastic tub mould is built for repeatable production of household and industrial tubs where wall thickness stability, smooth surfaces, and strong corners matter. Unique Mould develops tooling for storage tubs, utility tubs, washing tubs, and heavy-duty container styles with a focus on consistent filling, controlled shrinkage, and reliable ejection. From compact tub designs to large-capacity tubs, we help you achieve stable cycle performance, reduced rejection, and clean finishing suitable for daily use products and high-volume manufacturing.

How We Engineer a Plastic Tub Injection Mould

Tub mould performance depends on balanced gating, proper venting, and cooling uniformity across the cavity surface. We review the part geometry to confirm draft angles, rib strength, corner radii, and stacking features. Based on polymer choice such as PP or HDPE, we plan shrinkage allowances and surface finishing targets. Tool steel selection, CNC/EDM machining accuracy, cooling channel layout, and robust ejection design are aligned to deliver steady output, dimensional repeatability, and smoother demoulding even in deeper tub profiles.

Plastic Tub Mould Types We Manufacture

Household storage tub moulds for stackable tubs and organizer containers.
Utility tub moulds for cleaning, washing, and general-purpose applications.
Large volume tub moulds with reinforced corners and stable base design.
Rim and handle feature moulds for strong grip and long-term usability.
Prototype and sampling moulds for new tub product development cycles.

Key Features That Improve Tub Mould Output

Gate and runner balancing to maintain uniform fill and reduce sink marks.
Optimized cooling circuits to stabilize cycle time and minimize warpage.
Strong ejection layout to reduce sticking and protect visible surfaces.
Wear-resistant guiding and alignment for consistent long mould life.
Finish options for texture, matte look, polish level, and logo engraving.

Applications of Plastic Tub Moulds

Storage tubs and stackable tubs used in homes, warehouses, and retail packaging.
Washing and cleaning tubs designed for repetitive handling and water exposure.
Utility tubs for industrial sorting, material handling, and workshop use.
Multipurpose tubs for household organization, laundry use, and transport.

Benefits of a Production-Ready Tub Mould

Stable wall thickness control for better strength and reduced deformation.
Lower rejection with improved filling balance, venting, and cooling stability.
Cleaner finish with reduced flow lines, ejection marks, and surface defects.
Reliable long-run operation through robust steel selection and wear parts.

Reliable Partner for Plastic Tub Injection Mould Tooling

Unique Mould supports plastic tub tooling with a process that focuses on manufacturability, cycle stability, and consistent part quality. Whether you need a compact tub mould or a larger multi-cavity approach for higher output, we design gating, cooling, and ejection to match production realities. With structured design approval and controlled trials, we help you move from concept to repeatable mass production with dependable results.

Tips to Improve Plastic Tub Moulding Results

Finalize polymer selection early to optimize shrinkage allowances and gate sizing.
Use consistent cooling to reduce ovality, warpage, and base distortion issues.
Confirm draft and corner radii to improve release and reduce whitening marks.
Plan ejection placement to protect visible tub walls and rim surfaces.
Maintain slides, lifters, and ejectors regularly to keep cycles stable long term.

FAQs – Plastic Tub Mould

1. What information is required to start a plastic tub mould?

Share the tub drawing or sample, resin type, desired capacity, wall thickness targets, finishing requirement, and expected output. This helps define gating, cooling, steel grade, and ejection strategy.

2. Which materials are common for plastic tubs?

PP and HDPE are commonly used due to durability and chemical resistance. Material choice affects shrinkage, warpage control, cycle stability, and surface finish planning.

3. How do you reduce warpage in tub moulding?

Warpage is reduced through balanced filling, uniform cooling, correct wall thickness distribution, and stable ejection. Cooling layout and gate position play a major role in deep tub geometry.

4. Can you add branding or logo on a tub?

Yes. Branding can be integrated through engraving on the cavity surface so every tub has consistent identification without additional printing operations.

5. Do you support both single cavity and multi cavity tub moulds?

Yes. Single cavity tooling suits testing and lower volumes, while multi cavity tooling improves output when part size, machine capacity, and filling balance are engineered correctly.