赤川硬質硝子工業所 List of Products and Services

A character from Akagawa Hard Glass Co., Ltd. has been born, and we would like to introduce it. The character's name is "red dipper." It finds and scoops up your glass from the infinite sea of glass and glass materials. Our company has over 40 years of experience in the production of "porous glass," which has the property of allowing gases to pass through, and it is used both domestically and internationally. Please feel free to consult us when you need our services. [Applications of Porous Glass] ■ Partial Porousization (Porous glass can be applied to only a part) ■ Superfluid Film Flow Containers (Porous the outer surface of the glass) ■ Porous Glass Coated with Graphene (Imparts conductivity while maintaining breathability) *For more details, please refer to the PDF materials or feel free to contact us.

• Plate glass and mirrors
• Glass Decoration Materials
• Glass mirror

We offer samples of non-permeable porous glass. A 20mm square, 1mm thick piece of porous glass has a 200nm thick SiO2 film deposited on one side using vacuum deposition. The samples with square SiO2 films can be ordered starting from a minimum lot of one piece. We have a limited number of samples available for purchase. Please feel free to contact us if you are interested. 【Sample Specifications (Partial)】 ■ Pore Size: 4nm ■ Size: 20mm□ x Thickness 1mm ■ SiO2 Film Thickness: 200nm ■ Surface Treatment: Mirror Polishing *For more details, please refer to the PDF document or feel free to contact us.

• Glass blocks and crystallized glass

Our company possesses a variety of equipment. For example, the "single furnace" allows for the heating of cat-shaped crucibles individually to produce pipe glass, blown glass, and crushed glass, enabling glass melting. The "redraw device" heats the parent material of pipe glass to temperatures between 600°C and 900°C, allowing for the production of thin pipe glass. In addition, we have a "V-type mixer" and various measuring devices. 【Equipment List (Excerpt)】 ■ Single Furnace ■ Various Testing Furnaces ■ Redraw Device ■ Glass Cutting Machine / Glass Polishing Machine ■ V-Type Mixer *For more details, please refer to the PDF document or feel free to contact us.

• Glass Decoration Materials
• Special Construction Method
• others

Our company is a glass factory that consistently handles raw material formulation, melting, and molding. We process molten glass into granules, valves, pipes, rods, and perform press molding, among other forms. Among these, the production of glass tubes with freely adjustable inner and outer diameters is our strength. One person spins a rod with glass material while stretching the glass into beads, while another checks the dimensions by fanning it. Additionally, we accommodate small lot production that cannot be done by machines, custom manufacturing for prototype requests, and high-temperature glass production around 1600°C. 【Our Strengths】 ■ Production of glass tubes with freely adjustable inner and outer diameters ■ Small lot production that cannot be done by machines ■ Custom manufacturing for prototype requests ■ High-temperature glass production around 1600°C *For more details, please refer to the PDF document or feel free to contact us.

• Glass Decoration Materials
• Special Construction Method
• others

At our company, we consistently carry out raw material blending, melting, and molding, and we would like to share some voices of the artisans (technicians) who excel in this process. - The teamwork behind hand-blown glass (excerpt) Glass cannot be made to the exact same state as yesterday due to the temperature of the furnace and the way the molten glass is rolled. I have been in this field for 37 years, and I can never say that this is good enough. Creating glass is a lifelong learning experience. - The brilliance of individual skills in blown glass (excerpt) Molten glass is gooey and softer than taffy. I am always amazed by the skilled technique of wrapping that glass material around a rod and transforming it into a uniformly thick glass rod. Only the meticulously selected pieces, with no room for even the slightest deviation, become products. You can view the full text on our company website. Please take a moment to read it. *For more details, please refer to the PDF materials or feel free to contact us.

• Glass Decoration Materials

A semi-automatic horizontal forming tube, as the name suggests, is a device that produces glass tubes using specialized machinery. When glass tubes are made by human hands, variations in breathing can lead to discrepancies in dimensions each time, making adjustments difficult. By switching to a human-machine interaction, we can reduce breathing discrepancies, facilitate adjustments, and stabilize dimensions by creating our own machinery. We strive to manufacture better glass tubes. 【Features】 ■ Glass tubes are produced by machinery ■ Reduction of breathing discrepancies ■ Easier adjustments ■ Stabilization of dimensions ■ Machinery created in-house *For more details, please refer to the external link page or feel free to contact us.

• others

The "Glass Terminology Collection" is a catalog that compiles terms related to glass from Akagawa Hard Glass Co., Ltd., which provides better glass. It lists terms related to the glass manufacturing process and properties in alphabetical order. We hope it will be useful to everyone, so please make use of it. [Terms Included] ■ A Section - Abbe Number - Arrhenius Equation ■ K Section - Numerical Aperture - Easy-to-Cut Glass, etc. *For more details, please refer to the catalog or feel free to contact us.

• Glass blocks and crystallized glass
• Plate glass and mirrors
• Security glass and sashes

"Porous glass coated with graphene" is a porous glass that has been silylated on its surface and then carbon-coated using heated organic gas (chemical vapor deposition method; CVD). Using this method, the pore surfaces of the porous glass can be completely covered with a graphene film. In the case of a flat sample, a continuous graphene film is formed from the outer surface to the interior, allowing electricity to flow between the top and bottom surfaces of the glass plate. Additionally, the graphene film is thin, and the pore holes remain intact, so the top and bottom surfaces of the glass plate maintain breathability. [Features] - Improved alkali resistance - Conductivity is imparted - Retains the original pore structure of the nanoporous glass - Excellent chemical resistance - Porous electrode material *For more details, please feel free to contact us.

• Glass blocks and crystallized glass
• Plate glass and mirrors

Our chemically strengthened glass is a product of Akagawa Hard Glass Industry Co., Ltd., which consistently performs raw material formulation, melting, and molding. There are two methods for strengthening glass: air-cooled strengthening and ion exchange. We supply the ion exchange method's raw glass. The ion exchange method can strengthen even thin materials and has the characteristic of minimal shape change after strengthening. We also accommodate small lots, so please feel free to consult us. 【Features】 ■ Ion exchange method ■ High strength ■ Accommodates small lots *For more details, please contact us.

• Glass Decoration Materials
• Tempered Glass System

At Akagawa Hard Glass Industrial Company, we process molten glass into block shapes. As a glass factory that integrates raw material formulation, melting, and molding, we can accommodate your desired coloring. Please feel free to consult with us. 【Features】 ■ Consistent production of raw material formulation, melting, and molding ■ Small lot and diverse production ■ Excellent processing technology ■ Color customization available ■ High transparency *For more details, please contact us.

• Glass blocks and crystallized glass
• Glass Decoration Materials

"Porous glass" is created by thermally treating uniform glass to separate it into multiple phases, and then selectively dissolving only the soluble phase with chemicals, resulting in the formation of numerous pores. It has a high adsorption capacity for molecules and ions such as gases and liquids, and by altering the manufacturing conditions, it is possible to create extremely uniform pores. Additionally, the size of the pores can be varied, making it suitable for use as a separation filter. At Akagawa Hard Glass Industry, we have samples of "porous glass" available. Please feel free to contact us if you need any. 【Features】 ■ Porous glass with numerous pores ■ High adsorption capacity for molecules and ions such as gases and liquids ■ Ability to create uniform pores ■ Usable as a separation filter ■ Sample orders can be placed for 5 or more pieces of various types For more details, please refer to the catalog or feel free to contact us.

• Glass blocks and crystallized glass

"Crystallized glass" is obtained by re-heating glass and keeping it at a temperature above the liquid phase for an extended period, allowing its main components to precipitate as crystals. In most cases, it becomes opaque. By precipitating crystals, chemical durability and thermal properties can be enhanced. Many products take advantage of this feature, with one application being artificial marble. [Features] - Re-heating treatment of glass - Hardening and opacification - Increased chemical durability and thermal properties - Applicable to products like artificial marble For more details, please refer to the catalog or feel free to contact us.

• Glass blocks and crystallized glass

By using partially porous glass, the possibilities of what can be achieved expand. *For more details, please contact us.*

• Glass blocks and crystallized glass

Our company has over 40 years of experience in the manufacturing of "porous glass," which has the property of allowing gases to pass through, and it is used both domestically and internationally. The pore diameter ranges from 4 to 70 nm, making it suitable for applications such as separation filters and catalyst supports, and it is possible to adjust the pore size to selectively separate specific substances. (Pore sizes larger than 70 nm can also be discussed.) [Application Examples] ■ Partial porosity (porous glass can be applied to only certain areas) ■ Superfluid film flow containers (making the outer surface of glass porous) ■ Porous glass coated with graphene (providing conductivity while maintaining breathability) *We can accommodate various other needs, so please feel free to contact us.

• Glass blocks and crystallized glass

Akagawa Hard Glass Co., Ltd. is a glass factory that consistently performs raw material blending, melting, and molding. We excel in the production of small lots and a wide variety of specialized glass, and we strive to meet our customers' diverse needs. Our various products are utilized in many fields of advanced science and technology, and we take great pride and joy in this aspect. We hope to contribute to your business with our products. 【Main Product Overview】 ■ Tube Glass ■ Glass for Electronic Components ■ Crystallized Glass ■ Ultraviolet Transmitting Glass, Infrared Absorbing Glass ■ Glass for Lighting, Special Glass for Electrical Use, and Various Other Glasses *For more details, please contact us.

• Glass blocks and crystallized glass

Akagawa Hard Glass Co., Ltd. is a glass factory that consistently performs raw material blending, melting, and molding. We process melted glass into granules, valves, pipes, rods, and through press molding, as well as into block shapes. Based on these capabilities, we excel in the small-lot, diverse production of specialized glass and strive to meet various customer demands. 【Key Technology Overview】 ■ Creation and research and development of special glass products not available on the market ■ Various glass molding techniques [blow, press, tube] ■ Chemical-resistant glass [various shaped glass components and cullet production] ■ Heat-resistant glass [100-120°C heat shock resistance and product design] ■ Production of special and high-functionality glass - Melting using platinum crucibles, melting using quartz crucibles, prototype melting for glass research - Small-lot test melting using various clay crucibles *For more details, please contact us.

• Glass blocks and crystallized glass