• Super Glass Paper
Porous sheet

Super Glass Paper

Super Glass Paper is an ultla-thin non-woven sheet made of glass microfiber.
The minimum thickness less than 20µm is possible.
With its high porosity and heat resistance, Super Glass Paper can be adopted to various applications

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Product summary

Super Glass Paper is an ultra-thin non‐woven glass fabric developed based on the unique papermaking technology of NSG. With its extremely high porosity up to 90% and good thermal resistance, it is contributing to the property and reliability improvement of storage devices as a low-resistance/high-reliability separator.
Moreover, it is also suitable as base material or reinforcement material to be combined with high-functional polymer, solid or powder materials. By combining with Super Glass Paper, it becomes possible to turn functional materials into sheets easily without losing their original properties. NSG’s Super Glass Paper offers diverse potentials for application, such as separator for storage devices or component for composite base materials.

  • Super Glass Paper

Features of Super Glass Paper

Super Glass Paper is an ultra-thin non‐woven glass fabric with a thickness of 20µm or below, that is soft and flexible.
It has porous structure composed mainly of glass fibers whose diameter is less than 1µm. While it has a very fine network structure, it is also extremely porous.
Moreover, it has properties such as high thermal resistance, chemical stability, electric insulation and excellent wettability due to being made of glass material.
With these properties, it is suitable as base material or reinforcement material to be combined with various functional materials like high-functional polymer, solid or powder materials.
Thickness: The minimum thickness less than 20µm is possible. It is significantly thinner than conventional glass papers.
High porosity: It has high porosity, and it can be used as low-resistance separator. Moreover, it is capable of retaining many types of liquids, powders and polymers as composite base material, support or reinforcement material.
High thermal resistance: As it is mainly made of glass fiber, it has high thermal resistance unique to glass.
Excellent Wettability: It has high wettability and Solvent Affinity, and is easy to impregnate with liquid.
Workability: It can be cut easily. Moreover, it is possible to add thermal weldability to it.

SEM image of Super Glass Paper

SEM image of Super Glass Paper

Properties of Super Glass Paper

The table shows representative properties of Super Glass Paper.
We can offer optimal specifications for your purpose and demands.
※ This data shows representative values, not guaranteed performance.
※ Please make an inquiry to request special products.

Properties of Super Glass Paper

Thermal dimension stability

Measurement examples of the thermal shrinkage rate of Super Glass Paper.
It maintains low shrinkage in a wide temperature range, demonstrating its good thermal dimension stability.
※ This data shows representative examples. The shrinkage rate is different for each specification.

Thermal dimension stability

Glass sheet material for next generation battery

Today, more efficient energy usage is required to prevent global warming and reduce CO2 emission, and the development of storage devices such as battery and capacitor is ongoing.
Super Glass Paper newly developed by NSG is a ultra-thin glass nonwoven fabric with a thickness of 20µm or below, created with our unique thin-film technology.
With its high porosity and thermal resistance, it contributes to improve the properties of power storage devices as special separator. Simultaneously, as a new Super Glass Paper product, NSG is also developing a reinforcing sheet that is ultra-thin and has a very high porosity and can be combined with functional materials such as polymer electrolytes and solid electrolytes.
NSG’s Super Glass Paper will contribute to the performance improvement of various storage devices as a material for next generation batteries. We can propose optimal specifications for your purpose and requirements. Please make an inquiry for details.

Typical examples for each application

Typical examples for each application

NSG offers this product as a base material suitable for composites with individual electrolytes.

NSG offers this product as a base material suitable for composites with individual electrolytes.

Glass sheet material for flexible printed circuit board

Along with the expansion of next generation mobile communication system 5G/6G, further increase in capacity and speed of communication capability is occurring, and demand for flexible printed circuit boards that use low dielectric materials to prevent transmission loss is increasing. However, some low dielectric materials have large difference in thermal expansion with copper foil and could not be applied to flexible printed circuit board. Using ultra-fine glass fiber and our unique thin film technology, NSG developed Super Glass Paper, an ultra-thin non‐woven glass fabric that is thin, flexible and stable even in high temperature.
By combining low dielectric materials with Super Glass Paper, it becomes possible to limit thermal expansion without losing the original resin properties. NSG’s Super Glass Paper is expected to be further utilized in the field of communication device as a new material that supports the need for speed and capacity increase of the information society.

Glass sheet material for flexible printed circuit board

Glossary

Porous sheet

Sheet with many pores.

Papermaking

Making paper from fibers dispersed in water.
Using its papermaking technology we acquired over many years of working in glass fiber business, NSG is capable of manufacturing extremely thin glass papers.

Nonwoven fabric

Sheet-shaped artifact formed by gluing or intertwining fibers without weaving them. Production methods of nonwoven fabrics are classified into the wet and dry methods, and a fabric made through papermaking is classified as a wet type nonwoven fabric.

Porosity

It indicates the empty space per unit volume. When it is larger, it indicates that the ratio of empty space in the apparent volume is large.

Wettability / Solvent Affinity

It indicates good affinity and ease of bonding with liquids such as paper.
As Super Glass Paper has excellent wettability and solvent affinity, it can be impregnated with various liquids.

Air permeability

The amount of time a given amount of air can pass through a given area of paper under a given pressure.
It indicates the permeability and the breathability of paper.
It is also known as Gurley permeability.

Thermal dimension stability

It indicates the extent of measurement change in response to temperature change.
Commonly, organic porous materials display some degree of thermal shrinkage when the temperature is increased. However, a characteristic of Super Glass Paper is its relatively low thermal shrinkage.

Separator

Materials that retain electrolyte and electrically separate cathode and anode to prevent short circuit, are used in storage devices such as batteries.

Storage device

Device for storing electricity. For instance, there are lead acid batteries, lithium ion batteries, capacitors, and condensers.

FAQ

How thin can you make them?

We can make the thickness between 20 and 80µm. Please make an inquiry if you require even thinner sheets.

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What is the porosity you can achieve?

It depends on the specification, but it is approximately 90% at maximum and approximately 70% at minimum.

What are the shapes you can create?

As a product, it is offered as a roll. Please make an inquiry regarding its width and length. In addition, we can cut it into sheets and provide them as samples.

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What is its tensile strength?

It depends on the specifications. Please make an inquiry for details.

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It is a sheet made of glass material. Can I handle it with bare hands?

We recommend wearing gloves if you need to avoid transferring oil on hands to the product or if you have sensitive skin.

Can I cut and process the sheet easily with a pair of scissors?

It can be easily processed into the required size by cutting the sheet with scissors or a knife.

How do they need to be stored?

Please avoid high temperatures and humidity for storage, and store it indoors where it is not exposed to direct sunlight.

How do I dispose of the sheets that are no longer needed?

When disposing the sheets, please ensure that the product and its fragments are not scattered into the surrounding environment. Please treat is as industrial waste, following the laws and the regulations of the local municipality regarding the treatment and the cleaning of wastes.

How can I get hold of a sample?

Please make an inquiry.

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Can you make a prototype in the specifications I request?

If the conditions are feasible, it is possible. Please make an inquiry.

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How much is it?

Please make an inquiry.

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Document download

  • Product catalog
    Product catalog

    You can download the product catalog of Super Glass Paper.