Polystyrene and Polyester Envelope Window Film across the UK and Europe

Multiplastics offers a comprehensive range of window films for envelopes across the UK and Europe, designed to combine visual appeal, functionality, and quality. Whether you need anti-scratch matte OPS, high-clarity laser-compatible PET, or eco-conscious biodegradable options, we have the ideal solution. Production-ready and available in multiple thicknesses and finishes, our films meet strict quality standards (ISO 9001, BRCGS, SEDEX) ensuring consistent performance and reliability.
 

We can offer these films in several thicknesses from stock including 25mu, 27mu, 29mu, 32mu, 38mu, 50mu and 75mu, also available as:
 

• Biodegradable
• Compostable
• Tinted Colours
• Metallised
• Glassine Paper
• Silicone Release Liner
• Silicone Transfer Tape
   
Available Film Types
Polystyrene (OPS) Film
Our most widely used film for envelope windows – durable, anti-static, and matte-finished.

Why choose OPS?
• Matte, anti-scratch finish: Reduces glare and protects printed surfaces.
• Thicknesses in stock: 25 µm, 27 µm, 29 µm, 32 µm, 38 µm, 50 µm, 75 µm.
• Available finishes: Biodegradable, tinted colours, metallised.
• Stable performance: Ideal for high-speed converting applications.

Polyester (PET) Film
High-clarity window film optimised for laser printing and photocopiers.

Benefits:
• Crystal-clear finish: Excellent for showcasing printed inserts.
• Laser/inkjet compatible: Can be printed directly or processed through labels.
• Standard gauges: 36 µm and 50 µm, corona-treated for superior adhesion.

Glassine Film & Silicone Liner
Versatile options for inner liners, release liners, and non-plastic windows.
Key attributes:
• Glassine: Smooth, grease-resistant paper available in 20–60 µm for envelope windows or liners.
• Silicone Release Liner: Bleached kraft (35/45/60 gsm) for peel-and-seal applications.
• Silicone Transfer Tape: Enables adhesive-backed envelopes and business forms.

Biodegradable & Compostable Films
Eco-friendly materials tailored for sustainable envelope packaging.

Eco-features:
• EWF22DG: Matt biodegradable OPS in 29 µm gauge (anti-scratch).
• PLA film: Heat-seal, industrially compostable; stocked in 25–50 µm.
• Compostable cellulose option: Gloss/matt 28 µm, suited for envelope windows and labels.

Window Film Finishes & Customisation
• Matt finishes: Anti-glare and anti-scratch options ideal for packaging aesthetics.
• Tints & metallised: Add brand-specific colour or metallised sheen for premium appeal.
• Corona-treated surfaces: Improve adhesion for printing, adhesives, and laminates.
• Custom thicknesses & gauges: From ultralight (20 µm) to robust (>75 µm) to match machine and design needs.

Technical Features & Benefits
• Wide gauge range: From lightweight liners (20 µm) to heavy-duty windows (75 µm+).
• Functional finishes: Anti-scratch, matt/gloss reversals, corona treatment, tinted and metallised options.
• Printing compatibility: PET supports laser, OPS suits standard printing methods.
• Eco-credentials: Industrial compostable and biodegradable variants minimise packaging footprint.
• Self-adhesive readiness: Silicone liners & transfer tapes for peel-and-seal envelopes.

Whether you want to increase machine speeds, reduce pack costs, extend your shelf-life or simply cut down on packaging waste Multiplastics are here to help. Contact us today for further information on plastics across the UK and Europe, or for a full review of your packaging.