Dedicated to optical precision components
and Solution of high-tech core solutions

Home page

kimoto: What are some common categories of Mylar film products that we may not be aware of?

Release Date:

2020-08-12 11:34

Source:

kimoto: What are some common categories of Mylar film products that we may not be aware of?

　　Mylar film is produced by heating dimethyl terephthalate and ethylene glycol in the presence of appropriate catalysts, followed by ester exchange and vacuum polycondensation, and finally biaxial stretching. Mylar films are available in a wide range of colors, including milky white, black, natural, and transparent. They come in various material types, such as PET Mylar, PVC Mylar, PC Mylar, and flame‑retardant Mylar. These films exhibit excellent tear resistance, temperature resistance, weatherability, moisture and water resistance, and chemical corrosion resistance, while also providing superior electrical insulation properties.

　　Common product categories of Kimoto’s Mylar sheets:

　　1. PET Mylar film

　　It is a film produced by blending dimethyl terephthalate, ethylene glycol pellets, and a specialized polyester masterbatch in specific proportions, followed by heating in the presence of appropriate catalysts, ester exchange, vacuum polycondensation, and biaxial stretching. It exhibits excellent heat resistance, dimensional stability, and low light transmittance.

　　It is now widely used in industries such as printing film bases, advertising film bases, digital inkjet printing, magnetic cards, labels, and membrane switch substrates.

　　2. Screen Mylar film

　　This mylar film exhibits dimensional stability, flatness, and excellent tear resistance; it is resistant to heat and cold, moisture and water, and chemical corrosion, while also offering superior electrical insulation and outstanding electrical, mechanical, thermal, and chemical performance. It can further be combined with kraft paper to produce composite insulating materials. Today, it is widely used in the electrical insulation industry, finding applications in electronics, household appliances, instrumentation, displays, motor slot liners, and as gaskets, spacers, screens, and protective components for computers and peripheral devices.

　　3. Phone microphone diaphragm

　　This type of Mylar film must exhibit high tear strength, as well as resistance to heat, cold, moisture, and water, along with excellent chemical resistance and superior electrical insulation. It is primarily used as a gasket in mobile phone camera modules.

　　4. Transparent Mylar Sheet

　　The material is polyester PET, with biaxial stretchability and no breathability. After aluminum coating, the film exhibits a mirror-like finish and is primarily used as a base film for laser anti-counterfeiting, as well as for high-end packaging and security‑enhanced packaging. Aluminum coating must be applied to the non‑coated side. The coated film displays a mirror‑like surface, high transparency, low haze, and excellent winding performance. The composite structure can be configured with an additional heat‑sealable inner layer as required.

Do you really know what an aperture is? If you don’t, take another look.

A brief overview of the aperture: What key points should you keep in mind when shooting in aperture-priority mode?

Related News

VIC Ultra-Low-Reflectance Black Coating

Inside a lens assembly, reflections from metal spacer rings, lens retainers, baffle rings and the inner walls of the lens barrel can generate flare. The resulting artifacts include flare, halos, ripple-like patterns and ghost images, all of which degrade image quality, as illustrated.

Invitation to the 2026 Japan Optoelectronics Exhibition from Yamagata Optics

〇 A mature, stable production system and a precise stray-light elimination solution 〇 Addressing customer pain points—delivering products that deliver real value

The Yokohama Optoelectronics Exhibition in Japan concluded successfully, yielding abundant results.

Yamagata Optics manufactures shutter blades, apertures, bases, lens barrels, caps, spacers, and camera housings, which can perfectly address image quality issues caused by various types of stray light.

Ultra-Low-Reflectance Coatings for Metal Components Over 99.9% Light Absorption

Inside a lens assembly, reflections from metal spacer rings, lens holder, barrel,spacer , baffle rings and the inner walls of the lens barrel can generate stray light. The resulting artifacts include light streaks, halos, ripple-like patterns and ghost images, all of which degrade image quality, as illustrated.

Serrated-Aperture Diaphragms for Stray-Light Suppression

Yamagata Optical's patented serrated aperture-edge design offers clear advantages over conventional wavy-edge designs. This innovative geometry provides highly effective stray-light suppression. It reflects our long-standing commitment to advancing precision optical components through research and engineering innovation.

Ion Coating Dramatically Reduces Baffle-Ring Reflectance

Yamagata Optical's ion-coating process reduces baffle-ring reflectance by a factor of 8.6. In addition to multiple solutions for suppressing stray light at the aperture edge, we can apply an ultra-low-reflectance ion coating to both sides of the film used to manufacture baffle rings. After treatment, reflectance can fall below 0.3%, substantially improving camera-module optical performance.

Yamagata Optics lens hood ion plating technology

After ion-plating treatment, Yamagata Optics has achieved an 8.6-fold reduction in the reflectance of its aperture. Currently, in addition to multiple anti-glare and stray-light suppression solutions for the inner bore of the aperture, Yamagata Optics can also apply ultra-low-reflection ion-plating to both sides of the raw-material light-shielding film. Following this anti-reflection treatment, the reflectance can be reduced to below 0.3%, significantly enhancing the optical performance of the camera.

The Ultra-Black Revolution in Optics From 5% to 0.1% Reflectance: How Yamagata Optical Is Advancing Photonics

In optical imaging, light can be both essential and disruptive. An unwanted ray may reflect off a lens-barrel wall, scatter from a spacer ring or diffract at a baffle edge. The result can be ghosting, halos, light streaks, ripple-like artifacts or veiling glare that washes out the image. Together, these forms of stray light undermine image clarity, contrast and signal-to-noise ratio.