eGraf® SpreaderShield

Heat Spreaders

Superior Heat Spreading for Every Application 

eGraf® SpreaderShield flexible graphite heat spreader materials are a unique line of products capable of cooling a hot component, protecting a temperature-sensitive component, reducing a thermal gradient, or preventing a surface hot spot. SpreaderShield flexible graphite is a thermal material ideal for a wide range of electronics applications, from the thinnest and lightest smartphones to high-power devices. 

Typically, SpreaderShield flexible graphite is used in the following applications:

  • Cooling a hot component 
  • Spreading heat to eliminate a hot spot  
  • Shielding a temperature-sensitive component from a hot component 
  • Reducing a temperature gradient across the surface of a device

SpreaderShield heat spreaders are ideal for a wide range of electronics applications, including smartphones, tablets, displays, set-top boxes, enclosed electronics, and medical devices. You will also find SpreaderShield products in transportation and aerospace applications such as satellites, drones, xEV, marine and grid storage batteries, and automotive electronics.  

Why SpreaderShield™ Heat Spreaders? 

SpreaderShield flexible graphite heat spreaders are thin, lightweight solutions frequently used in electronic devices and battery thermal management applications. 

In electronic devices, SpreaderShield offers superior heat spreading capability in a thin, lightweight form, which is essential as devices become more powerful yet are slim and lightweight in design. 

In battery thermal management, SpreaderShield heat spreaders are a direct replacement for aluminum. For the same heat spreading as aluminum, graphite has 1/2 the thickness and 1/3 the weight. SpreaderShield solutions deliver superior lightweight heat spreading performance in battery applications. 

SpreaderShield™ Product Portfolio 

SpreaderShield products are available in natural and synthetic graphite sheet options and offer various in-plane thermal conductivities and thicknesses. All SpreaderShield heat spreaders can be die-cut or laminated with plastics, with or without adhesives, to meet the most demanding specifications.  

  • Natural Graphite
    • A variety of in-plane thermal conductivity options from 350 to 600 W/m·K and
        through-plane thermal conductivity from 2.8 to 4.1 W/m·K
    • A broad range of thicknesses from 0.040mm to 0.94m
  • Synthetic Graphite
    • A variety of in-plane thermal conductivity options from 1350 to 1600 W/m·K and through-plane thermal conductivity of 3.4 W/m·K
    • Thinner than natural graphite with a broad range of thicknesses from 0.017mm to 0.050mm

Features & Benefits 

  • Anisotropic ratio up to 300:1 
  • Thicknesses as low as 17μm 
  • 30% lighter than Aluminum and 80% lighter than Copper 
  • Continuous reel-to-reel format 
  • Spreads heat up to 4x of Copper and 7x of Aluminum 
  • Eliminates hot spots and protects temperature-sensitive components 
  • Enables the slimmest device designs 
  • Saves weight compared to metal alternatives 
  • Ideal for high volume production

NeoGraf’s global team of application engineers specialize in developing and manufacturing high-quality flexible natural and synthetic graphite material solutions for today’s advanced applications. Regardless of your product design phase (concept, prototyping, or mass production), we offer technical answers and thermal modeling support to some of your most challenging problems with a fast response time.


Innovative Graphite Materials for Medical and Diagnostic Devices

SpreaderShield™ flexible graphite heat spreaders often play a critical role in thermal management in many kinds of medical devices.

Flexible Graphite Use in Electric Vehicles

Graphite is widely used in high-performance cell phones, laptops, TV displays, and tablets; don’t be surprised if your EV has a battery that is cooled with NeoGraf's flexible graphite.


eGraf® thermal management products, solutions and processes have earned the following proprietary rights:

A Thermal Management System:  CA2401619; CN1874889; CN101091423;  CN205564920; CN205692938; CN207369488; EP1536313; EP1680274; EP1742524; EP2026164; EP2296454; EP2973840; JP3204114; JP3206039; JP3213925; JP4555300; KR10-1168099; KR10-0935275; KR20-0486521; MX241283; US6758263; US6777086; US6982874; US7161809; US7292441; US7573717; US7799428; US7889502; US8955983; US9664368; US9673494; US10177070; TWI278275; TWI316842; TWM487605; TWM505066

Battery Thermal Management:   CN203398243; CN203398244; CN203950846; CN203950871; CN203481336; CN204128420; KR20-0479471;  KR10-2006430; KR20-0479460; KR20-04810140; KR20-0482438; KR20-0485795; KR20-0487029; JP3183200; JP3195255; US9343784; US9368843; US9444123; US9716296; US9774063: US9797664; US10587019; D701166; D709027

Display:  CN1617661; CN17255945; CN1892320; CN102159060; CN102573415; EP1673754; EP1739708; EP2528424; KR737231; KR767558; KR10-0768630; KR10-0830526; KR10-0938749; KR10-1012168; KR10-1055051; MX270438; US7138029; US7150914; US7160619; US7276273; US7658999; US7666270; US8211260; US9081220: US9087669; US9104058; US9250462; US9253924; US9253932; US9653763; US9761403; US10440865; TWI277998; TWI294600; TWI304375; TWI369936

Flexible graphite sheet:  CA2557497; CN203415567; EP1384261; EP 1467856; KR20-0478915; JP3186199; US6673284; US6746768; US6777086; US7166912; US9267745; US10744736

Flexible circuit:  US9546763; US9546764; US10094516

Heat Sink:  US6538892; US6749010; US6771502; D662898; D677227;

HiThermTM Flexible Graphite:  EP1467856; JP3207324; KR20-0492216; US6746768; US10589998; TWM510925

Are you looking for a thinner, more powerful material that can achieve better heat spreading? Contact us, and we can help you get started.

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