Industrial glass products

Organic EL Cap Glass

We process glass for sealing the back surfaces of organic electroluminescence (EL) elements to protect them. We also process patterned etching (spot facing) onto glass sheets.

Delivery formats: We can provide both (1) large sheets for dividing into multiple pieces and (2) cut products for individual use.
Glass sheet thickness: No specific restrictions, but we have processed sheets of 0.3 mm and greater thickness.
Etching depth: 50 to 700 μm (in-house results)
Depth precision: ±50μm
Etching methods: (1) Etching processing, (2) Sand blasting + etching processing
Surfacing processes: Glass surfaces can be processed according to customer requests, such as: (1) transparent finish, (2) roughened finish, (3) frosted finish, and (4) with holes added.
We can handle small-lot manufacturing orders. We also accept requests for prototyping.

Nonglare (Non-reflecting) Glass Processing

We use chemical processes for etching that can create fine patterns on glass surfaces. Such etching broadly scatters light reflected off of the glass, suppressing reflectivity and reflection of surroundings. We provide various grades of glare reduction. Please contact us for details.
Applications: We have applied our processes towards displays and light scattering for LED lighting.

Thin Sheet Glass Cutting

We provide cutting of glass sheets recently developed by glass manufacturers that have a thickness of 30 μm to 100 μm. While laser cutting has been conventionally used for this process, it creates fine micro-cracks than can reduce the strength of the glass. We use a special cutting method that rounds cut edges for improved strength. The technology for this process was developed by using a 2014 Supplementary Craftsmanship, Trade, and Service Innovation Grant.

Glass Acid Washing

Acid washing of glass bottles such as vial bottles suppresses the elution of alkali content from the glass.

In-house elution test results

Material: Type 1 borosilicate glass
Alkali elution amount without acid washing: 20 μg/g
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Alkali elution amount after acid washing: 5 μg/g or less
Note) These results are for reference purposes only and are not guaranteed values.

Glass Tube Standard Length Cutting and Opening Sizing

Glass tubes can be used when you want to see inside the tube and suppress elution of foreign matter as liquids flow through. We can cut tubes to specified dimensions as well as process their openings.
Outer diameter: Approx. ⌀3 to 200 mm
Length: 20 to 1500 mm (in-house processing results)
Opening types
(1) Flat-ground (to create a flat surface perpendicular to the pipe's length)
(2) Flame-polished edge (to create a rounded edge for avoiding injuries)
(3) Flat-ground and flame-polished

We can also process special types of openings, such as flared or narrowed openings.
Usage examples: Fuse cylinders, coffee makers, etc.

Graduation Marking for Glass Tubes (Gauge Tubes)

We can apply our glass volumeter graduation marking technologies to provide special graduation marking. Since the graduations are etched into the glass tube, they will not fade or disappear. Graduation markings can be applied for units of volume, length, or other units according to customer requests.

Brown Coloring

Just the surfaces of transparent glass can be colored brown. This method reduces metal ion contamination compared to the use of brown glass materials. (The coloring used in brown glass contains metal ions.) The processing method we use is called the "staining method" where silver and copper ions, which are coloring ions, are exchanged with sodium ions on the glass surface at high temperatures to apply a brown coloring.

In-house processing results: Flasks with a maximum volume of 20 liters (please contact us for sizes, etc.)

Note) The product shown here had masking applied before brown coloring was applied to demonstrate how only the surface of the glass is colored.