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The Five Features of PENJEREX®

  • Thermal insulation & Heat shielding
  • Energy saving
  • Transparency
  • Anti-shuttering
  • UV-cut

【Thermal insulation & Heat shielding】Performs Well Not Only in the Summer, But Also in the Winter.PENJEREX is a glass film with the highest thermal insulation properties in the industry, and top-ranked solar heat-cutting properties as well.

In buildings, heat mostly enters and exits from windows and other openings.

  • 【Summer】Ratio of thermal inflow during cooling in the summer (daytime)
  • 【Winter】Ratio of thermal outflow during heating in the winter

Source: An example case for a model house built in accordance with the 1992 Energy Efficiency Standard, cited from “Implement thermal insulation of openings in houses in the 21st century...!” advocated by the Energy-saving Construction Material Dissemination Center of the Japan Construction Material and Housing Equipment Industries Federation.

For this reason, energy-saving films for windows are used for energy-saving repair at building openings; however, they are mostly only effective in the summer.

With the Highest Thermal Insulation Properties in the industry and Top-ranked Solar Control Properties, PENJEREX® Makes the Interior a Comfortable place to Stay Both in the Summer and in the Winter.

PENJEREX is a glass film. When simply applied to a window, PENJEREX improves air conditioning efficiency by cutting solar heat that enters through the window in the summer and reducing the amount of heat that escapes from the window in the winter. As a result, the interior is maintained at a comfortable temperature both in the summer and in the winter.

【Heat shielding】Cuts solar heat 【Thermal insulation】Suppresses heat transfer

  • 【Summer】PENJEREX cuts solar heat by about 50% to lessen the summer heat.
  • 【Winter】PENJEREX cuts thermal outflow by about 35% to mitigate the winter cold.
  • 【Summer coolness】PENJEREX improves solar heat-cutting performance by 4.6 times.
  • 【Winter warmth】PENJEREX improves thermal insulation performance by 1.6 times.

Heat insulation experiment in the summer season: Difference in solar heat entering from a window

Heat insulation experiment in the summer season: Difference in solar heat entering from a window

PENJEREX® Prevents the Entry of Solar Heat to Ensure Comfortable Interior Temperatures.

When comparing solar heat entering from outside of a room and reaching a desk in front of a window, a temperature difference of approximately 8°C was observed. PENJEREX cuts solar heat and prevents it from entering the room, thus ensuring coolness and increased comfort near windows even in the summer season.

A thermal insulation experiment in the winter season: Difference in heat escaping from a window

A thermal insulation experiment in the winter season: Difference in heat escaping from a window

PENJEREX® prevents heat from escaping from the window.

To watch how heat escapes from a window, the surface temperature of a window was monitored using a thermo-camera from outside of the room. The non-film-applied window recorded a higher temperature because heat was escaping through it. On the other hand, the window with PX-7060S applied had a lower temperature because PX-7060S blocked the heat from escaping.

A thermal insulation experiment in the winter season: Difference in heat escaping from a window

「Warm with far infrared rays reflected」A thermal insulation experiment in the winter season: Difference in heat escaping from a windowA thermal insulation experiment in the winter season: Difference in heat escaping from a window

PENJEREX® does not allow warmth to escape from the interior of the room because it reflects far infrared rays.

Our hands are warm and release far infrared rays, whereas glass (with no film) does not reflect far infrared rays (Figure B). In contrast, PENJEREX reflects far infrared rays like a mirror, thus preventing heat escape to the outside, confining the warmth to the inside of the room (Figure A).

Comparative experiments for predicted mean vote (PMV), an index of thermal environmental comfort

Reduces heat and coolness at the window.

  • 【Summer】With PENJEREX®
  • 【Summer】No film
  • 【Winter】With PENJEREX®
  • 【Winter】No film

If you are dissatisfied with currently available thermal-insulating glass:

Hot in the summer season, and cold in the winter season Aren't you dissatisfied with thermal glass or thermal ray-cutting glass?

  • 【Summer】Comparison of solar control properties
  • 【Winter】Comparison of thermal insulation performance

PENJEREX® helps improve your comfort and satisfaction, and reduces cooling and heating expenses.

For more information, please contact us here.

The Five Features of PENJEREX®

  • Thermal insulation & Heat shielding
  • Energy saving
  • Transparency
  • Anti-shuttering
  • UV-cut

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