The Tethered Cap Injection Molding Machine SZ-3800A is designed for high-volume production of tethered bottle caps and plastic closures used in modern beverage packaging systems.
This machine is typically integrated into:
- Beverage bottle cap manufacturing lines
- Plastic closure OEM production plants
- High-output packaging injection molding workshops
Features
3800KN clamping force for stable molding of multi-cavity cap tools.
High-pressure injection up to 203 MPa for thin-wall tethered cap production.
680×680 mm tie-bar spacing supports multi-cavity cap molds.
The hydraulic system supports stable 24/7 operation.
Specifications Table
|
ITEM |
UNIT |
SZ-3800A |
|
INJECTION UNIT |
||
|
SCREW DIAMETER |
mm |
65 / 70 / 75 |
|
SCREW L/D RATIO |
L/D |
22.6 / 21 / 19.6 |
|
THEORETICAL SHOT VOLUME |
cm³ |
1061 / 1231 / 1413 |
|
SHOT WEIGHT (PS) |
g |
966 / 1120 / 1286 |
|
INJECTION PRESSURE |
MPa |
203 / 175 / 152 |
|
THEORETICAL INJECTION RATE (PS) |
g/s |
308 / 357 / 410 |
|
PLASTICISING CAPACITY |
g/s |
50.6 / 60.5 / 71.5 |
|
SCREW TORQUE |
N·m |
2860 |
|
MAX. SCREW ROTATE SPEED |
r/min |
150 |
|
INJECTION STROKE |
mm |
320 |
|
CLAMPING UNIT |
||
|
MAX. CLAMPING FORCE |
kN |
3800 |
|
MAX. OPENING STROKE |
mm |
680 |
|
SPACE BETWEEN TIE BARS |
mm |
680 × 680 |
|
MOULD HEIGHT |
mm |
250–710 |
|
MAX. DAYLIGHT |
mm |
1390 |
|
EJECTOR FORCE |
kN |
90.7 |
|
EJECTOR STROKE |
mm |
170 |
|
EJECTOR QUANTITY |
pcs |
13 |
|
OTHER |
||
|
PUMP MOTOR POWER |
kW |
37 |
|
PUMP PRESSURE |
MPa |
16 |
|
HEATING POWER |
kW |
25 |
|
HEATING ZONE |
zones |
5 |
|
SIZE |
m |
6.8 × 2.0 × 2.3 |
|
NET WEIGHT |
t |
15 |
|
OIL TANK CAPACITY |
L |
820 |
|
INTERNATIONAL DESIGNATION |
- |
3800-2150 |
Production Capability
The SZ-3800A is suitable for different mold configurations:
- 8–16 cavity tethered cap molds (standard production)
- 16–32 cavity high-output cap molds (optimized tooling required)
- Cycle time range: typically 4–8 seconds, depending on mold design
This makes the machine suitable for:
- Medium-scale cap factories
- High-output packaging suppliers
- Export-oriented injection molding plants
Application Scope
This machine is suitable for:
- Tethered beverage bottle caps (EU-compliant packaging systems)
- Plastic screw caps for food & beverage containers
- Injection molded closure systems for export packaging
- OEM cap manufacturing for global packaging suppliers
About Shenzhou Machinery
Located in the industrial heart of Zhangjiagang, Shenzhou Machinery has spent years perfecting the art of plastic injection molding technology. We provide comprehensive production solutions.
Quality Assurance: All machines are strictly manufactured in accordance with ISO 9001 standards and hold CE certification.
R&D Commitment: Our engineering team continuously refines our designs to meet the evolving requirements of the global circular economy, specifically focusing on lightweight and sustainable packaging technologies.
Our Global After-Sales Commitment
We understand that equipment uptime is the heartbeat of your business. Our promise to our international partners includes:
24/7 Technical Support: Remote diagnostic services to resolve operational queries instantly.
Spare Parts Logistics: A dedicated inventory of critical spare parts ready for global expedited shipping within 48 hours.
FAQ
Q: Is Shenzhou Machinery a direct manufacturer?
A: Yes. We are an integrated industrial enterprise specializing in R&D, manufacturing, and international trade. We welcome all potential partners to visit our production base in Zhangjiagang for an on-site audit.
Q: What is the typical lead time?
A: For standard configurations, our production lead time is typically 45–60 days. Customized solutions or complex mold integration may require additional time for testing and validation.
Q: How do you handle international after-sales support?
A: We provide a 12-month full machine warranty. Our team utilizes advanced digital diagnostic tools to assist you remotely. For complex issues, our experienced engineers are available for overseas deployment to your site.
Q: How can I confirm the quality of your machines?
A: We invite you to request our latest CE certification documents and factory inspection reports. We can also provide references from our existing international clients upon request.
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