Plastic film sheet with good light transmittance and its application

Source:pulixin By Administrator Posted:2022-07-13
PMMA, PC, PS, PP plastic film sheets have good transparency and gloss, and are commonly used chemical materials in life. Let's take a look at the characteristics of PMMA, PC, PS, PP films and sheets, and what industries are they used in?

1. PMMA film
Properties of PMMA Films:
PMMA film, also known as polymethyl methacrylate film, has good chemical stability and weather resistance, and is non-toxic and environmentally friendly. Good comprehensive mechanical properties, in the forefront of general-purpose plastics, and PMMA resin is not easy to produce sharp fragments when broken. The United States, Japan and other countries and regions have made mandatory regulations in the law that PMMA resin must be used for glass used in primary and secondary schools and kindergartens.

Operating temperature: -30~80℃

Thickness: 0.5mm-8mm

Surface effect: smooth surface, sand surface, brushed surface

Scope of application: PMMA film has a wide range of applications, and has been widely used in the automotive industry (signal light equipment, instrument panels, etc.), the pharmaceutical industry (blood storage containers, etc.), industrial applications (video discs, light diffusers), electronic product buttons (especially Transparent), consumer goods (drink cups, stationery, etc.), etc. At the same time, due to its excellent optical properties, the penetration of white light is as high as 92%. PMMA products have very low birefringence and are especially suitable for making video discs and advanced optical lenses.


2. PS film sheet
Characteristics of PS film sheet:
PS film sheet, also known as polystyrene film, has high transparency and gloss, beautiful appearance, good printing performance and excellent metal evaporation. PS sheet has low water absorption and high permeability to gas and water vapor.

PS film sheets are divided into unstretched films and biaxially stretched films. The unstretched PS film is hard and brittle, and has little use value; the physical and mechanical properties of the biaxially stretched BOPS film have been significantly improved, and the original transparency and gloss are still maintained.

Operating temperature: -40~95℃

Thickness: 0.2mm-2mm

Scope of application: PS film is mainly used for thermoforming various packaging products such as cups, plates, saucers, fast food boxes, medicines, etc. It is also commonly used in carton packaging windows and light food packaging. In addition, when it is laminated with metal foil, it can be used for insulation and EMI/FRI shielding. For example, PC light diffusing film has antistatic effect and good weather resistance, especially suitable for LCD backlight modules.


3. PC film
PC film properties:
PC film is an amorphous, odorless, non-toxic, highly transparent colorless or slightly yellow thermoplastic engineering plastic with excellent physical and mechanical properties. In particular, it has excellent impact resistance, high tensile strength, flexural strength, and compressive strength, small creep, and dimensional stability. It has good heat resistance and low temperature resistance, and has stable mechanical properties, dimensional stability, electrical properties and flame retardancy in a wide temperature range.

Operating temperature: -30~120℃

Thickness: 0.07~1.0mm

Surface effect: smooth surface, sand surface, brushed surface

Scope of application: Flame retardant PC film is widely used in electronic components, electrical shells, switch panels, junction boxes and charger shells, automotive instrumentation and panel printing with flame retardant requirements. Printing grade frosted PC film is suitable for special printing, helmets, signs, nameplates, protective covers, etc. Anti-scratch PC film is used in window lenses of electronic products such as mobile phones, MP3, MP4, DVD, backlight and so on.


4. PP film sheet
Characteristics of PP film sheet:
PP film sheet is divided into unstretched film and biaxially oriented film. Unstretched polypropylene film includes blown polypropylene film (IPP) produced by extrusion blow molding and extrusion cast polypropylene (CPP) produced by T-die method. ). Biaxially oriented polypropylene film (BOPP) is a new type of film developed for the purpose of replacing cellophane. It has the characteristics of high mechanical strength, good toughness, good transparency and gloss.

Operating temperature: -15~55℃

Thickness: 0.05mm -0.35mm

Surface effect: excellent gloss, good transparency

Scope of application: PP film is used in all aspects of daily life due to its excellent characteristics, including heat-sealing films for printing and composite bag making. Paper-plastic composite ultra-thin high-matte film used for booklets, advertising books, gift bags, etc. Silicone-backed release liner for the protection of plasters, labels, silent adhesive tapes and other self-adhesive products. Barrier protective film for wrap-around barrier protection of fishing rods, golf clubs and other industrial products. Heat-sealable aluminized film for heat-sealable pouch packaging directly for food. It is used for the production of high-transparency adhesive tapes, high-transparency films for paper product lamination, etc.