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Zipper fin heat sink assembly
- High Fin Density: Zipper fin stacks allow for very tall, thin, tightly packed fins, significantly increasing heat dissipation surface area and thermal performance.
- Lightweight Design: Constructed from thin stamped aluminum or copper, zipper fin assemblies offer high cooling capacity with reduced weight compared to solid copper sinks.
- Cost-Effective for Mass Production: Pre-tooled zipper fin designs eliminate non-recurring engineering charges and are ideal for high-volume manufacturing.
- Interlocking Sheet Construction: Progressive stamping and interlocking fin design enable precise, reliable assembly with excellent mechanical stability.
- Material Flexibility: Fins and base can be mixed-for example, copper base with aluminum fins-to balance thermal performance, weight, and cost.
- Custom Integration: Compatible with heat pipes, vapor chambers, ducts and fans, enabling enhanced thermal solutions tailored to specific applications.
- Excellent Airflow Efficiency: Thin fin geometry reduces airflow resistance, lowering pressure drop and potentially reducing fan requirements.
Zipper fin heat sink assembly Product
Customization Capabilities
We offer comprehensive custom services for zipper fin heat sink assemblies to meet your specific thermal management needs.
- Fin Material: Aluminum or copper
- Base Material: Aluminum, copper or mixed
- Fin Thickness (mm): Typically from 0.1 to 0.5
- Fin Height (mm): Customizable per thermal requirements
- Fin Pitch (mm): Adjustable to optimize airflow and performance
- Integration Options: Heat pipes, vapor chambers, ducts, fans
- Fin-to-Base Join Type: Wave solder, epoxy bond, brazing
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Why Partner with Sinoextrud for Your Zipper fin heat sink assembly Needs?
We are more than just an aluminum profile supplier — we’re your efficient, reliable, long-term partner.
With Us, You Get:Faster turnaround，Stable quality，Competitive pricing，End-to-end support.
Large-Scale Manufacturing：Our factory spans 1,000 mu (about 667,000 m²), with full in-house capabilities from aluminum smelting and billet casting to extrusion, surface treatment, and CNC machining.
One-Stop Solution：With 43 extrusion lines (500–5500 tons) and a dedicated mold partner, we provide fast production, custom profiles, and integrated services to simplify your supply chain.
Quality You Can Trust：Strict quality control ensures consistent dimensions, strength, and finish, reducing your risk and increasing reliability.
Fast Delivery & Cost Efficiency：Self-produced billets, in-house processing, and batch production mean faster lead times and lower overall costs.
Advanced Finishing Options：Anodizing and both vertical and horizontal powder coating lines deliver durable, high-quality surface finishes tailored to your product needs.
Factory Overview
Furnace workshop
Aluminum bar production
Mold Warehouse
500-5500 Tons Extruder
Spraying workshop
Anodizing workshop
Deep Processing Workshop
CNC Machining Workshop
Finished goods warehouse
Finished goods warehouse
Finished goods warehouse
Export warehouse
5500 Ton Extrusion Press
Aluminum extrusion press
Large Aluminum Extrusion Line
Aluminum extrusion production line
Extrusion workshop
IATF 16949 Certification
TUV
Finished goods warehouse
Export warehouse
-Standard Packing Option-
* Long bar length profiles 3.0-6.0 meters*
Protective Film
Shrink Sleeve
Brown Paper
Craft Paper
* Short bar length profiles 0.3-3.0 meters*
EPE Foam
Poly Bag
Wooden Crate
Wooden Case
-Loading & Shipment-
Pallet Loading
Bulk Loading
LCL Loading
Expedited Express
STEPS
How to work with us
Sample & Test
Creating a prototype to assess dimensions and ensure the mold's precision aligns with the requirements.
Extrude & Finish
Producing the aluminum profile with pinpoint accuracy to the given specifications and applying desired finishes.
Pack & Deliver
Tailored packaging for the extruded profiles, ensuring safe and efficient loading for prompt delivery.
Zipper fin heat sink assembly-FAQ's
What fin thicknesses are supported?
We support fin thicknesses from about 0.1 mm to 0.5 mm, allowing high aspect ratio designs suitable for forced convection cooling.
What materials can be used?
Fins can be aluminum or copper; bases can be aluminum, copper, or hybrid configurations to balance cost and performance.
Do you require custom tooling?
Pre-tooled zipper fin designs eliminate NRE charges; fully custom tooling is available for unique configurations.
Can heat pipes be integrated?
Yes, zipper fin assemblies can integrate heat pipes or vapor chambers for enhanced thermal spreading.
What is the minimum order quantity?
MOQ is flexible; zipper fin assemblies are highly cost-effective for high-volume production runs.
What joining methods do you use?
Fins are joined to the base via wave soldering, brazing, or epoxy bonding, depending on material combinations.
Are zipper fin assemblies mechanically stable?
Yes, interlocked fin stacks joined top and bottom offer high mechanical robustness and stability.
What industries use zipper fin assemblies?
Common in telecom, server CPUs, consumer electronics, networking, and high-power forced-convection cooling scenarios.
How is airflow optimized?
Thin, densely packed fins lower pressure drop and improve airflow, reducing the need for high-power fans.
How long is the lead time?
Lead time depends on design complexity; pre-tooled options enable rapid prototyping and production, while custom designs may require longer tooling lead times.
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Sinoextrud: Your Zipper fin heat sink assembly Manufacturer
Zipper fin heat sink assemblies utilize tightly interlocked thin fins that deliver excellent thermal efficiency in compact form factors. With high fin density and material flexibility, they provide superior cooling performance while keeping weight and cost under control.
These heat sinks are well suited for demanding applications such as consumer electronics, telecommunications, servers, and high-power forced-convection environments. Their design allows integration of heat pipes or vapor chambers to further enhance heat spreading and management.
Our assembly options support a variety of surface joining methods-including soldering, brazing, and epoxy bonding-optimizing reliability and thermal transfer depending on material choices and application needs.
We also offer robust CNC machining and deep processing services, enabling features like mounting holes, custom base shapes, and integrated ducting or channels to streamline system assembly and performance.
With professional production capabilities, flexible custom tooling, reliable quality control, and fast delivery, our zipper fin heat sink assemblies stand as a trusted, high-value solution for global B2B customers seeking advanced thermal management components.
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