Product Description
This Water Cap Plastic Injection Molding Equipment is engineered for continuous, ultra-precise mass production of bottled water caps, beverage closures, and tamper-evident rings using PP/HDPE.It delivers exceptionally low cycle times and weight deviation control to maximize OEE (Overall Equipment Effectiveness) in high-volume packaging factories.
High-Performance Engineering for Beverage Closure Lines
Food-Grade & GMP Compliance: All mold-zone contact areas feature optional stainless steel cladding or corrosion-resistant coatings, ensuring compatibility with cleanroom standards and strict FDA food-contact regulations.
Ultra-Fast Solidification & Cooling: Optimized water circuit distribution channels inside the platen ensure highly uniform cooling, shortening the solidification phase by up to 20%.
Precise Thread De-molding & Ejection: Synchronized high-speed hydraulic or servo-driven stripping/ejection ensures threads are demolded without deformation, eliminating leakage risks at final bottling lines.
Intelligent Clamping & Mold Safety: Low-pressure mold protection responds within milliseconds, preventing micro-damage to high-value, multi-cavity S136 steel hot runner molds.
Tier-1 Global Component Integration
To guarantee global parts availability and zero-downtime production, our systems rely on international industry-standard components:
Control System
KEBA (Austria) / Beckhoff (Germany) high-speed injection PLC.
Servo Drive & Motor
Phase (Italy) / Delta (Taiwan) closed-loop servo system.
Hydraulic Valves
Bosch Rexroth (Germany) / Yuken (Japan) proportional valves.
Linear Guide Rails
THK (Japan) / Hiwin (Taiwan) for friction-free, parallel platen movement.
Rigorous Quality Control & Pre-Shipment Testing
Every production cell undergoes strict verification protocols before container loading:
48-Hour Dry Run Simulation: Testing high-speed mechanical wear and cycle stability.
Cavity Parallelism & Deflection Test: Platen parallelism is verified under full clamp tonnage via laser interferometers to ≤ 0.03mm.
Weight Deviation Multi-Cavity Test: Verified through continuous sample molding to ensure part weight variation across 48+ cavities remains strictly within industry tolerances.
CE, ISO9001 & UL Compliance: Fully documented for hassle-free customs clearance and international factory audits.
Downstream Automation Modules
High-speed cap slitting and folding machines (for tamper-evident bands).
Automated cap lining/wadding machines for oxygen-barrier liners.
100% In-line vision inspection systems (detecting thread defects, flashes, and contamination at 2,000+ caps/min).
Centralized pneumatic conveyor and automated box-packing lines.
Machine Parameters
|
ITEM |
UNIT |
SZ-5500A |
||
|
INJECTION UNIT |
||||
|
SCREW DIAMETER |
mm |
80 |
85 |
90 |
|
SCREW LID RATIO |
L/D |
22.3 |
21 |
19.8 |
|
THEORETICAL SHOT VOLUME |
CM3 |
2141 |
2418 |
2710 |
|
SHOT WEIGHT(PS) |
g |
1948 |
2200 |
2466 |
|
INJECTION PRESSURE |
Mpa |
188 |
167 |
149 |
|
THEORETICAL INJECTION RATE(PS) |
g/s |
427 |
482 |
541 |
|
PLASTICISING CAPACITY |
g/s |
80 |
100 |
118 |
|
SCREW TORQUE |
N.m |
5170 |
||
|
MAX.SCREW ROTATE SPEED |
r/min |
150 |
||
|
INJECTION STROKE |
mm |
425 |
||
|
CLAMPING UNIT |
||||
|
MAX.CLAMPING FORCE K |
KN |
5500 |
||
|
MAX.OPENING STROKE |
mm |
820 |
||
|
SPACE BETWEEN TIE BARS |
mm |
810×810 |
||
|
MOULD HEIGHT |
mm |
350-820 |
||
|
MAX.DAYLIGHT |
mm |
1640 |
||
|
EJECTOR FORCE |
KN |
150 |
||
|
EJECTOR STROKE |
mm |
210 |
||
|
EJECTOR QUANTITY |
13 |
|||
|
OTHER |
||||
|
PUMP MOTOR POWER |
KW |
55 |
||
|
PUMP PRESSURE |
Mpa |
16 |
||
|
HEATING POWER |
KW |
33 |
||
|
HEATING ZONE |
6 |
|||
|
SIZE |
m |
8.4×2.2×2.6 |
||
|
NET WEIGHT |
t |
23.5 |
||
|
OIL TANK CAPACITY |
L |
1000 |
||
|
INTERNATIONAL DESIGNATION |
5500-4040 |
|||
Machine configuration
After-sales service
We provide free accessories to keep the machine running without any problems
Company Profile
Buyer evaluation
We are 20 years manufacturer of the injection molding machine in China, more than 1500 customers all over the world.
Packaging & Shipping
Certifications
FAQ
Q: What is the actual hourly output of your 48-cavity system for standard 28mm water caps?
A: Based on a standard 28mm lightweight water cap (approx. 1.2g–1.5g) operating at a 4.0-second cycle time, a 48-cavity system yields approximately 43,200 caps per hour at 100% OEE. We calculate actual production outputs based on your specific cap weight and drawing specifications during technical evaluation.
Q: How does this machine maintain weight consistency across a high-cavity mold (e.g., 48 or 72 cavities)?
A: Weight deviation causes cap torque failure. Our machine utilizes a high-response injection system coupled with a Beckhoff/KEBA closed-loop control system that regulates injection pressure within ±0.1 MPa. Combined with a balanced hot runner system, this ensures identical melt pressure reaches every single cavity, keeping part weight variance under ±0.1g.
Q: Can your machine support high-percentage recycled HDPE/PP (rHDPE/rPP) for eco-friendly cap production?
A: Yes, but with strict parameters. Caps require excellent stress-crack resistance and perfect sealing surfaces. While the machine's bimetallic screw handles rHDPE/rPP easily, we recommend a maximum blend of 30% high-quality post-consumer recycled (PCR) resin mixed with 70% virgin resin. Additionally, an extra-fine melt filter system is mandatory to prevent hot runner nozzle blockages.
Q: Why is a high-speed injection machine preferred over continuous compression molding (CCM) for water caps?
A: While CCM is highly efficient for standard, high-volume flat water caps, our High-Speed Injection Molding Machine provides much greater product flexibility. It allows packaging plants to produce complex geometries, such as flip-top caps, sports caps, multi-piece closures, and heavy-threaded edible oil caps, on a single machine platform simply by swapping the molds.
Q: What hot runner gate configurations are supported by the machine controller?
A: The electrical and hydraulic systems are fully configured to support both valve-gated and open-gate (thermal sprue) hot runner systems. The PLC includes built-in, independent multi-zone PID temperature controllers (stable to ±0.5°C) compatible with global brands like Yudo, Husky, Mastip, and Synventive.
Q: How does the machine handle automatic thread unscrewing or stripping actions?
A: For standard water caps, high-speed mechanical stripping or hydraulic ejector plates are utilized for maximum speed. For complex internal threads (e.g., cosmetic or pharmaceutical caps), the machine's control system features integrated hydraulic core-pulling interfaces and rotational unscrewing software modules to control precise hydraulic or electric motor-driven mold cores.
Q: What are the installation requirements and post-sales technical support for international factories?
A: We provide full plant layout engineering, including electrical, water-chilling, and air compressor requirements, 30 days prior to delivery. Upon arrival, we provide remote AR (Augmented Reality) installation guidance or dispatch a field service engineer for on-site commissioning, mold integration, and operator training. The system's IoT module allows our headquarters to perform remote diagnostics via internet connection to troubleshoot parameters instantly.
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