015 days
Product and fit review → mould-base release
Production mould technical dossier
6CAV round flat lid mould
6CAV round flat lid mould for thin-wall food container and bowl programs requiring reliable closure fit. Supports clear-lid applications, fast-cycle output, stable geometry, stack release and customizable sealing structures for transport-ready packaging.
Typical product
Clear round flat lid matched with meal box, bowl and thin-wall food container series
Typical material
Clear PP or buyer-specified resin after fit and heat-resistance review
Machine matching
350T high-speed injection molding machine
Cycle time target
Within 6 seconds per shot, depending on resin, lid weight and cooling layout
Cavity configuration
6 cavities for this model; alternatives can be evaluated by output target
Fit validation
Container sample, rim tolerance, closing force, leakage test and stack height should be confirmed before steel cutting
Mould development
Review the route from drawing and DFM through steel, trial and acceptance.
View evidenceFlow balance
See how runner, gate and cavity balance are evaluated for repeatable filling.
View evidencePrecision machining
Connect product tolerances with CNC, EDM, inserts and component control.
View evidenceCMM inspection
Understand dimensional verification and the inspection evidence available.
View evidenceSix-cavity round flat lid · visual project record
Inside a 60-day reference build.
This reference schedule connects the matching-container review with mould-base preparation, precision machining, inspection, assembly and production trial. Final timing is confirmed from the approved lid geometry, steel route, hot runner, machine and acceptance plan.
60Total reference days
0223 days
Rough machining → coordinated lid geometry
0320 days
Precision finishing → dimensional inspection
0410 days
Assembly, cooling, venting and hot-runner checks
052 days
Mould trial → fit, stack and sample validation
Days 01–0501 / Fit review & mould base
The matching container defines the lid before steel is released.
The lid diameter, rim engagement, closing force, pull tab, stack height, resin and filling temperature are reviewed together with the matching container or bowl. Mould-base references, cooling, ejection and hot-runner interfaces are then prepared around the released six-cavity layout.
- Lid and matching-container geometry reviewed together
- Machine space, projected area and six-cavity layout confirmed
- Cooling, ejection and service interfaces released before machining
Days 06–2802 / Coordinated geometry
Complex rim and stacking features are machined with fewer datum transfers.
Coordinated machining protects the relationship between the lid rim, snap profile, stacking ring, pull tab and assembly interfaces. The route leaves a controlled allowance for precision finishing instead of relying on late manual correction.
- Rim, stack ring and pull-tab geometry held in one datum strategy
- Fewer re-clamping steps between related features
- Predictable finishing allowance for later operations
Days 29–4003 / Precision finishing
Sealing and release interfaces receive a controlled finishing route.
Finishing focuses on the cavity surfaces and interfaces that influence lid flatness, closure consistency, venting and clean release. The approved steel condition and surface requirement determine the final cutting and polishing sequence.
- Controlled rim and closure-profile finishing
- Venting and release surfaces prepared for repeatable moulding
- Allowance protected for fitting and polishing
Days 41–4804 / Dimensional verification
Critical geometry is checked before the mould becomes a closed assembly.
Functional datums, cavity relationships and selected lid-forming features are compared with the released design. Findings can be returned to machining while the component remains accessible, reducing the risk of discovering a fit problem only at trial.
- Critical geometry compared with released CAD
- Cavity relationships reviewed before assembly
- Findings returned to the responsible manufacturing stage
Days 49–5805 / Assembly & melt delivery
Six cavities become one cooled and balanced production system.
The hot runner, cooling circuits, ejector system and moving interfaces are assembled and checked together. Gate position and temperature control are reviewed against lid appearance, filling balance and the practical service route.
- Six-cavity melt balance checked as one system
- Cooling, venting and ejection functions reviewed before trial
- Service access considered during final assembly
Days 59–6006 / Trial & fit validation
The lid is accepted with its matching container and production conditions.
Trial work reviews cavity balance, lid weight, flatness, closure engagement, stack release and the practical cycle under suitable resin, cooling, machine and automation conditions. Representative lids are checked with the matching container before the agreed evidence package is prepared.
- Cavity balance and representative lid weight recorded
- Closure fit, stacking and leakage risk checked with the container
- Cycle target evaluated during stable continuous running
Hengqi proof system
The product page should also prove who can deliver the mould.
Buyers do not evaluate the product concept alone. They also need evidence that the supplier can design, machine, measure, trial and support the mould through production acceptance.
60days
Reference mould development workflow
A controlled route from DFM and design approval through machining, trial, correction and acceptance.
3μm
CMM measurement capability
Precision inspection supports dimensional verification for inserts, cores, cavities and critical interfaces.
60+
Technical specialists
Engineering, machining, assembly, trial and project support are connected throughout the tooling programme.
300
Employees
Production and support resources cover mould development, manufacturing, inspection and after-sales response.
Hot runner and multi-cavity flow balance are reviewed around the real product and output target.
CNC, EDM, component fitting and CMM inspection are connected through the same manufacturing route.
Engineering support continues from drawing review and trial correction to production and after-sales response.
01 / Engineering review
The mould proposal must match the real production line.
Product geometry, resin, machine, cycle, lid or label and automation are reviewed as one system. The sections below explain the project-specific decisions buyers should confirm before steel is released.
Engineering checkpoint 01
Round lid mould focused on sealing consistency and line efficiency
This 6CAV round lid mould is built for meal-box and takeaway food packaging where repeatable seal fit and easy closure behavior are critical for customer satisfaction.
The mould is tuned around matching container geometry to reduce leakage risk while keeping high-volume production stable on fast-cycle lines.
Engineering checkpoint 02
Pre-tooling checks buyers should align first
Key technical checks include container-rim tolerance, closing force target, storage/transport leakage requirements and resin shrinkage behavior.
These inputs guide runner type, venting strategy, cooling channel arrangement and steel selection so the mould holds dimension and sealing quality over long production campaigns.
Engineering checkpoint 03
How the lid mould supports container system quality
A lid mould should be evaluated together with the matching bowl or tray because sealing performance depends on both parts, not the lid dimension alone.
For container-system projects, Hengqi can review the cup rim, lid snap profile, stacking clearance and transport test requirements before confirming the mould layout.
Engineering checkpoint 04
RFQ details for a round food container lid mould
Useful quotation inputs include the matching container drawing, lid sample, resin grade, lid weight target, filling temperature, packing method and required leakage or drop-test standard.
These details help avoid a mould that runs quickly but fails on closure fit, lid flatness or downstream packing reliability.
02 / Tooling specification
Compare the technical basis, not only the mould price.
These values describe the current reference project. Final steel, cavity count, runner, machine and cycle target are confirmed from the customer product and production plan.
Typical product
Clear round flat lid matched with meal box, bowl and thin-wall food container series
Typical material
Clear PP or buyer-specified resin after fit and heat-resistance review
Machine matching
350T high-speed injection molding machine
Cycle time target
Within 6 seconds per shot, depending on resin, lid weight and cooling layout
Cavity configuration
6 cavities for this model; alternatives can be evaluated by output target
Fit validation
Container sample, rim tolerance, closing force, leakage test and stack height should be confirmed before steel cutting
Front and rear mold material
Domestic or imported 2344/S136/customer specified
Mold base material
P20/4Cr13/Customer specified
Runner options
Needle valve or needle point hot runner
Reference delivery
60-day design-to-trial project schedule
Customization
Lid diameter, sealing edge profile, vent design, stackability and anti-leak geometry
03 / Before shipment
Acceptance evidence should answer production questions.
The exact checklist is agreed for each project. These are the core records buyers normally use to confirm dimensions, function, output and correction closure before shipment.
View inspection process01
T0 / T1 trial records
Record the trial setup, resin, machine, process window, visible defects and required corrections.
02
Dimensional inspection
Verify critical product and tooling dimensions against the approved drawing and agreed tolerances.
03
Part weight and wall thickness
Check shot-to-shot consistency, thin-wall distribution and deformation risk across representative samples.
04
Lid fit or sealing test
Review closure engagement, rim flatness, leak risk, opening force and stacking where the product requires it.
05
Cycle and continuous running
Confirm the practical cycle target under suitable resin, cooling, machine and automation conditions.
06
Final evidence package
Provide agreed samples, trial video, inspection results and correction records for customer confirmation.
04 / Quotation checklist
Send enough production data for a useful tooling proposal.
A drawing or sample is the starting point. Machine, resin, output, closure and acceptance details allow Hengqi to review cavity layout, steel, runner, cooling and automation with fewer assumptions.
Product drawing or physical sample
Capacity, dimensions and target part weight
Resin grade and food-contact requirement
Target cavity number and annual output
Injection machine model and tonnage
Expected cycle time and automation plan
Matching lid, label or sealing requirement
Acceptance standard and delivery schedule
Discuss this mould with an engineer.
Send your drawing, sample photos and production target. Hengqi will review the project scope before preparing the quotation.
Start WhatsApp review Send formal inquiry05 / Buyer questions
Questions to resolve before quotation.
Can this mould be matched to our existing round container platform?
Yes. Lid diameter, sealing rim profile and fit tolerance can be customized around your existing container drawings or samples.
What production speed is realistic for this 6CAV lid mould?
A cycle target within 6 seconds is typical on a suitable 350T high-speed line, with final speed dependent on resin flow, part weight and cooling efficiency.
Can this lid mould be optimized for anti-leak transport requirements?
Yes. Sealing profile geometry, venting and tolerance strategy can be adjusted during design to improve anti-leak performance across filling, transport and storage.
Should buyers send the matching container sample too?
Yes. The matching container drawing or sample helps confirm sealing profile, closing force and tolerance strategy before the lid mould is finalized.
Can this round lid mould be made for hot-fill food packaging?
Yes, but buyers should confirm the resin, filling temperature, lid flatness target and leakage test method so the mould can be tuned for thermal stability.
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