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AMSTOG – Fertigung

Salt bath treatment and engineering services for glass components, glass fibers and thin glass

AMSTOG Logo

AMSTOG GmbH

GeesthachtNew on Amplifa

2020Founded
GmbH, HRB 20191 HL (Local Court Lübeck)Legal form
Glass processing in molten saltsCore process

About us

AMSTOG GmbH, headquartered in Geesthacht, specializes in chemical processes in molten salts and offers salt bath treatments for glass components – from chemical strengthening to etching. The processes are based on reducing molten salts and enable glass processing without the use of hydrofluoric acid. Services include tapering glass fibers (tapers, tips), structuring surfaces for multifunctional microsystem technology, and treating fiber and flat glass substrates. In the Tabaluga project, a dip-coating process for thin glass for chemical strengthening was developed. In addition, the company offers engineering services from a mechanical, electrical and process engineering perspective, including special software, hardware and design solutions for the process-optimized adaptation of glass components and the necessary peripheral equipment. AMSTOG GmbH was founded in 2020 out of the SaltEtch research project for the development of modular plant technology for glass etching in molten salts and cooperates with the Fraunhofer Institute for Reliability and Microintegration IZM.

Site
Geesthacht
Processes
Salt bath treatment / chemical processes in molten salts, Glass etching based on reducing molten salts (SaltEtch), Chemical strengthening (dip coating of thin glass), Tapering glass fibers (tapers, tips), Structuring of surfaces (e.g. for multifunctional microsystem technology), Engineering services (software/hardware, design solutions, mechanical, electrical,, Salt bath treatment (chemical strengthening, etching in molten salts), Engineering services (mechanical, electrical, process engineering)
Materials
Glass, Glass fiber, Flat glass substrate, Thin glass, Reducing molten salt
Founded
2020
Industries
Glass, Optical fibers / Photonics, Microsystem technology
  1. 01

    Inquiry and process design

  2. 02

    Engineering service / design

  3. 03

    Salt bath treatment (etching, chemical strengthening)

  4. 04

    Component quality assurance

Materials & Processes

Glas

Glass

Base material for salt bath treatments such as etching and chemical strengthening.

Glasfaser

Glass fiber

Is tapered by molten salt processes, e.g. into tapers and tips.

Flachglassubstrat

Flat glass substrate

Used for structured surfaces in microsystem technology.

Dünnglas

Thin glass

Dip coating for chemical strengthening (Tabaluga project).

Salzschmelze

Reducing molten salt

Process medium for hydrofluoric-acid-free glass etching and strengthening.

Locations

Standort Geesthacht

Geesthacht

DE

Headquarters with laboratory pilot plant for molten salt processes

Materials
Glass, glass fiber, flat glass substrate, thin glass
  • Molten salt laboratory pilot plant (2016)

Components

Fiber holder
Fiber holderSalt bath treatment · Photonics
Glass fiber, 50 µm strengthened
Glass fiber, 50 µm strengthenedChemical strengthening · Optical fibers
Glass component after salt bath treatment
Glass component after salt bath treatmentGlass etching · Microsystem technology

Inside the production

First laboratory pilot plant, 2016
First laboratory pilot plant, 2016
SaltEtch project launch, 2017
SaltEtch project launch, 2017
Salt bath treatment: process setup
Salt bath treatment: process setup
Treated glass components
Treated glass components
Stefan Emde, Management
Stefan Emde, Management
Holger H. Stühff, Management
Holger H. Stühff, Management

Industries

GlassOptical fibers / PhotonicsMicrosystem technology

Processes & technical limits

ProcessesToleranceMax. partWeightLot sizeMaterials
Salt bath treatment / chemical processes in molten saltsSurface––––Glass, Glass fiber, Flat glass substrate, Thin glass
Glass etching based on reducing molten salts (SaltEtch)Surface––––Glass
Chemical strengthening (dip coating of thin glass)Surface––––Thin glass
Tapering glass fibers (tapers, tips)Surface––––Glass fiber
Structuring of surfaces (e.g. for multifunctional microsystem technology)Surface––––Glass, Flat glass substrate
Engineering services (software/hardware, design solutions, mechanical, electrical,Engineering–––––

1 Anlagen & Maschinen

MachineManufacturer / modelQuantityWorking areaYear builtSite
Molten salt laboratory pilot plant–1–2016Geesthacht

Additional services

Salt bath treatment (chemical strengthening, etching in molten salts)Engineering services (mechanical, electrical, process engineering)Design solutions and process expertise for glass components

Reference customers

Fraunhofer Institute for Reliability and Microintegration IZM (cooperation partner)

History

  1. 2016

    The research partner's first laboratory pilot plant goes into operation.

  2. 2017

    Start of the SaltEtch research project for the development of modular plant technology for glass etching based on reducing molten salts.

  3. 2020

    Completion of the SaltEtch project; founding of AMSTOG GmbH based on the results.

  4. 2022

    Presentation and co-authorship of the article "Novel etching process based on molten salts for optical fiber components" at Photonics West 2022 in San Francisco together with Fraunhofer IZM.

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