Corporate Overview and History
Sheldahl Inc. was purchased by Multek in 2004. Multek develops, manufactures and sells Sheldahl® brand materials. Multek is one of the top 10 global suppliers of rigid and flexible printed circuits. With over 30 years of printed circuit board manufacturing experience Multek offers industry-leading interconnect solutions, including Rigid, Flexible and Rigid-Flex printed circuit boards for a broad range of applications.
Sheldahl was established as G.T. Schjeldahl Company by Gilmore T. “Shelly” Schjeldahl. The newly formed company produced bag-making machines.
ECHO I the 100-foot passive satellite (“satelloon”) that was produced by Schjeldahl was launched.
Company constructs a 540-foot long air-supported building which came to be known as the “Schjel-mile”
ECHO II is fabricated using Schjeldahl materials.
Production of “Schjel-Flex”, a line of precision-etched flexible circuitry processed in roll-to-roll form using “Schjel-Clad” materials.
The satellite Pegasus was sent to orbit. The meteoroid detector panels were fabricated by Schjeldahl through vacuum deposition and lamination.
Pageos 5 a 100-ft diameter satelloon produced with Schjeldahl materials was launched.
Schjeldahl participated in the Voyager program.
Schjeldahl’s flexible circuits were used by Western Electric to produce the Trimline telephone.
Schjeldahl provides thermal control materials in response to an emergency repair needed on the Skylab.
The company’s name was changed to Sheldahl, Inc. to make it easier to spell and pronounce the company name.
The Viking unmanned spacecraft landed on Mars.The bioshield that kept the spacecraft sterile during its journey was built by Sheldahl and included the signatures of the Sheldahl employees that produced it.
FLEXSWITCH®, a new line of membrane switches was introduced for use in office equipment and appliances.
Sheldahl patents unidirectional tape. A splicing system for the joining the butt ends to abrasive materials.
Sheldahl acquires Symbolic Displays Inc. of Irvine, CA to increase the scope and depth of our capabilities.
.Sheldahl acquired Cirtel / Cirpak of Irvine, CA and Nashua Flexible Circuits of Nashua, NH from BMC’s Interconics.
Sheldahl introduced Z-Link® an inter-connective circuitry system based on an adhesive that conducts electricity only in the Z (vertical) axis.
Novaclad® a copper on film flexible material was introduced. The Novaclad® was produced by vapor depositing copper directly onto the surface of a polyimide film and then additional copper is plated to the desired thickness.
Novalink® a multilayer circuit constructed with Novaclad® or Novaflex® and Z-Link® adhesive was introduced to the market.
ViaGrid® was developed. A Novaclad® based microcircuit substrate with a pattern of either uniform or custom placed conductive holes.
Sheldahl introduced a family of ITO films to the market under the trademark: ACCENTIA®
Sheldahl introduced ComClad™ HF a family of high-frequency laminates designed for use in the wireless communications market.
Sheldahl provided the world’s first roll-to-roll of patterned ITO material for the display market.
Sheldahl is purchased by Multek
Sheldahl high volume roll-to-roll ITO patterning and screen printing capability is established
Bus Bond® a family of insulation materials used as inner and outer layers in the production of laminated busbars is introduced to the market.
Roll-to-Roll “PEDOT” (Poly(3,4-ethylenedioxythiophene)) screening printing offered to the marketplace.
Q-Prime: A proprietary circuit technology with thermally conductive adhesive and a thin composite structure.