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Flexible Materials

FLEXIBLE MATERIALS

FLEXIBLE MATERIALS CAN BE CHARACTERIZED BY THE ABILITY TO BEND OR COMPRESS EASILY WITHOUT CRACKING UNDER NORMAL CONDITIONS.

The Gund Company manufactures, converts, and distributes papers, films, and flexible elastomeric laminate materials.

Paper-Based Flexible Materials

CELLULOSIC PAPER (WOOD PAPER)-BASED FLEXIBLES ARE LOW-TEMPERATURE INSULATION MATERIALS THAT CAN HAVE A RESIN BINDER OR CAN BE BOUND BY INTERWOVEN WOOD FIBERS.

The most common is Kraft paper, and The Gund Company offers various material options.

HIGH-TEMPERATURE SYNTHETIC PAPER

Aramid fiber paper is characterized by exceptional temperature and tear resistance. This includes, but is not limited to, aramid papers, such as Nomex®, and 3M® inorganic paper products.

These papers can be formed into basic shapes to help line slots or make fitted bends on corners. Papers made from inorganic fiber are less expensive than aramid fiber papers and have better thermal conductivity. Typically, they are more brittle and can only be formed reliably when used as a laminate with a thermoplastic film.

Aramid fiber paper, renowned for its outstanding temperature and tear resistance, encompasses various aramid papers like Nomex® and 3M® inorganic paper products. These versatile papers can be molded into simple configurations, facilitating slot lining or precise corner bends. Inorganic fiber papers, while more cost-effective than aramid counterparts, exhibit superior thermal conductivity.

Paper Materials

Flexible Insulation
Brand NameGeneric Name
G -Flex™ YT510Meta Aramid
G-Flex™ YT511Meta Aramid
G -Flex™ YT514Meta Aramid
Mica MMica
Mica PMica
Copaco®Cotton Rag Paper
3M LFT®Inorganic Blend
3M FRB®Inorganic Blend
3M Thermavolt®Inorganic Blend
3M Tufquin®Inorganic Blend
3M Cequin®Inorganic Blend
Nomex 410®Meta Aramid
Nomex 414®Meta Aramid
Cogemica®Mica
Voltoid® / Duroid®Organic & Inorganic Blend
G -Flex™ Kraft PaperKraft Paper
_Diamond Coated Kraft Paper

Films and Thin-Gauge Sheets

FILMS AND THIN-GAUGE SHEETS ARE GENERALLY VERY HIGH IN DIELECTRIC STRENGTH, AND THERMOPLASTICS USUALLY PROVIDE A HIGH DEGREE OF FORMABILITY.

Flexible thermoset films can also be produced either with or without reinforcement to improve dimensional stability at elevated temperatures.

Films and Thin Sheet Materials
Flexible InsulationBrand NameGeneric Name
PolyPro FR®Polypropylene
Formex®Polypropylene
Statex®Static Dissipative Polypropylene
Mylar®PET
Melinex®PET
Lexan FR700®Polycarbonate
Palram Palsun®Polycarbonate
Makrolon®Polycarbonate
RotoGuard EG®Glass Epoxy
Kapton®Polyimide

Flexible Laminates

AS WITH RIGID LAMINATE MATERIALS, FLEXIBLE LAMINATE MATERIALS ARE COMPRISED OF TWO OR MORE MATERIALS THAT MAKE UP A COMPOSITE.

Flexible laminates may include a combination of substrate materials and some type of thermosetting resin or adhesive to bond the layers of substrate together. When combining multiple materials, unique properties can be achieved, which could not be achieved using the materials separately.

 For example, paper can be combined with thermoplastic film to provide temperature resistance with good formability and high dielectric strength. 

Flexible laminates are most commonly used in applications where a thin layer of insulation is required. These applications typically require the material to be bent, formed, or punched into a shape that fits into a confined space. Typically, applications include: 

  • Layer insulation in transformer coil 
  • Slot insulation in motor 
  • Turn-to-turn insulation in power generators 
  • Phase-to-phase insulation in low-voltage circuit breakers 
Flexible Materials Icon

Flexible Laminates and Films

G-Flex™ AMA, APA, YMY

Aramid Paper + PET Film

NMN

Dacron Mylar 

Polyester Fleece + PET Film 

DM, DMD

Nomex® Mylar 

Aramid Paper + PET Film 

NM, NMN

Rag Mylar

Cotton Fleece + PET Film 

RM, RMR 

Tufquin® + PET Film 

Inorganic Paper + PET Film 

TFT 

Nomex® Kapton® 

Aramid Paper + Polyimide Film 

NKN 

RotoGuard EG® 

Glass Epoxy 

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RotoGuard TIB® 

Glass Epoxy + B-Stage Glass Adhesive 

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B-Stage Glass Epoxy 

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