Production mould technical dossier
8CAV coffee cup lid mould for disposable PP/PS drink lids and connected cover structures. The tooling is matched to a 260T high-speed machine, supports needle valve or needle point hot runner systems, and targets about 4.5 seconds per cycle depending on resin, part weight and line automation.
Typical product
8CAV coffee cup lid, disposable PP/PS drink lid, connected cover lid
Machine matching
260T high-speed injection molding machine
Cycle time target
About 4.5 seconds per shot, subject to resin and lid structure
Cavity configuration
8 cavities (layout can be re-evaluated for output or machine limits)
Main resin options
PP and PS (final shrinkage setting based on selected grade)
Acceptance focus
Cup-rim fit, lid flatness, sip opening completion, vent filling, stack release and cavity-to-cavity weight balance
Review the route from drawing and DFM through steel, trial and acceptance.
View evidenceSee how runner, gate and cavity balance are evaluated for repeatable filling.
View evidenceConnect product tolerances with CNC, EDM, inserts and component control.
View evidenceUnderstand dimensional verification and the inspection evidence available.
View evidenceHengqi proof system
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
A controlled route from DFM and design approval through machining, trial, correction and acceptance.
3μm
Precision inspection supports dimensional verification for inserts, cores, cavities and critical interfaces.
60+
Engineering, machining, assembly, trial and project support are connected throughout the tooling programme.
300
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
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
This 8CAV coffee cup lid mould is built for disposable drink lids where sealing fit, flatness and repeatable output matter in daily production.
The page specification is based on a 260T high-speed injection molding machine with a cycle target around 4.5 seconds, depending on lid weight, resin and the final runner configuration.
Engineering checkpoint 02
Coffee cup lid tooling needs consistent cavity filling and stable cooling because small deformation quickly affects fit force, leak resistance and consumer drinking experience.
Before final design freeze, Hengqi reviews cup rim tolerance, lid stack dimensions and resin shrinkage so gate position, venting and ejection can support stable mass production.
Engineering checkpoint 03
Buyers should confirm whether the lid is for hot coffee, cold drink, vented straw-hole use, or connected cover packaging because each structure changes parting line, gate position and ejection design.
Hengqi can review your production target, lid sample, cup rim data and packing method before quotation so the mold specification supports real sealing tests instead of only nominal dimensions.
Engineering checkpoint 04
A practical mould trial should use the buyer's real cup samples and target resin, then compare rim engagement, leak behavior, sip-opening fill, vent consistency and stack separation across all eight cavities.
For high-speed lid lines, Hengqi also checks ejection marks, lid whitening, cavity weight spread and whether the finished lids can be picked, nested and packed without deformation.
02 / Tooling specification
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
8CAV coffee cup lid, disposable PP/PS drink lid, connected cover lid
Machine matching
260T high-speed injection molding machine
Cycle time target
About 4.5 seconds per shot, subject to resin and lid structure
Cavity configuration
8 cavities (layout can be re-evaluated for output or machine limits)
Main resin options
PP and PS (final shrinkage setting based on selected grade)
Acceptance focus
Cup-rim fit, lid flatness, sip opening completion, vent filling, stack release and cavity-to-cavity weight balance
Useful RFQ data
Matching cup sample, lid drawing, resin grade, machine model, cycle target, robot/take-out plan and leak-test method
Front and rear mold material
Domestic or imported 2344/customer specified
Mold base material
P20/4Cr13/Customer specified
Runner
Needle Valve/Needle Point Hot Runner
Key structure
Balanced filling, lid sealing fit control, anti-deformation cooling layout, stable ejection
03 / Before shipment
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 processRecord the trial setup, resin, machine, process window, visible defects and required corrections.
Verify critical product and tooling dimensions against the approved drawing and agreed tolerances.
Check shot-to-shot consistency, thin-wall distribution and deformation risk across representative samples.
Review closure engagement, rim flatness, leak risk, opening force and stacking where the product requires it.
Confirm the practical cycle target under suitable resin, cooling, machine and automation conditions.
Provide agreed samples, trial video, inspection results and correction records for customer confirmation.
04 / Quotation checklist
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
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
Yes. We check cup rim diameter and tolerance, sealing force requirements, and your lid sample or 3D drawing before finalizing cavity dimensions.
No. The 4.5 second target depends on the final lid weight, material, cooling design, machine condition and automation setup.
Provide lid and cup drawings, target resin, machine model, expected monthly output, and any leak-test or drop-test standards. This helps lock design details early.
The mold can use needle valve or needle point hot runner systems, selected according to the product structure, gate position and customer production requirement.
We recommend checking the lid with actual cup samples, rim tolerance data, leak or tilt tests, stack height checks, and a pilot production trial before final mold acceptance.
The production mould must control filling, cooling, venting, ejection and cavity balance at speed, so the final lid remains consistent across all cavities and not only on one sample cavity.
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