Buying Guide · 2026-01-22
How to Choose Between Nylon PLA Non Woven and PET Filter Film
The choice of filter film affects bag performance, environmental impact, and brand positioning.
Filter Film Options for Tea Bag Machines
The choice of filter film affects bag performance, environmental impact, and brand positioning. Sengong supplies nylon, non-woven fabric, PET, and PLA biodegradable films for use in pyramid tea bag, filter paper inner-and-outer bag, and drip coffee hanging-ear bag machines. Each film type is compatible with ultrasonic or heat sealing, depending on the machine model and sealing method. Films are available in standard and custom sizes, with options for single or double-sided printing on tags.
Nylon Filter Film
Nylon film is imported from Japan and used in pyramid tea bag machines. It has high tenacity, heat resistance, and food-grade safety. The film is transparent, durable, and suitable for whole leaf, herb, and flower blends. It is available in raw white color and can be used with ultrasonic sealing. Standard roll widths are 120, 140, and 160 mm. It is compatible with high-speed machines and supports consistent sealing without scorching.
Non-Woven Fabric Filter Film
Non-woven fabric film is opaque and suitable for pyramid tea bags where visibility of the blend is not required. It is made from high tenacity materials and available in raw white. It is compatible with both heat and ultrasonic sealing. Standard sizes include 120mmx50mm, 140mmx58mm, and 160mmx65mm, with 6,000 pieces per roll and 6 rolls per carton. It supports single or double-sided printing on tags.
PET Filter Film
PET film offers high clarity and strength, ideal for transparent pyramid bags. It is durable, resistant to tearing and bending, and suitable for use in high-speed packaging lines. It is compatible with ultrasonic sealing and available in standard thicknesses of 0.09mm, 0.1mm, and 0.11mm. Custom thickness and size options are available. It is used in machines requiring clear visibility of the tea blend.
PLA Biodegradable Filter Film
PLA film is made from corn fibre and is fully biodegradable, breaking down into water and carbon dioxide in natural soil. It is suitable for eco-conscious brands and meets international sustainability trends. It is used in pyramid tea bag and drip coffee bag machines. Available in standard sizes: 120mmx50mm, 140mmx58mm, and 160mmx65mm, with 6,000 pieces per roll and 6 rolls per carton. Supports single or double-sided printing on tags.
Film Compatibility and Machine Use
All filter films are designed to work with Sengong's automatic vertical packaging machinery, including pyramid tea bag machines, filter paper inner-and-outer bag machines, and drip coffee hanging-ear bag machines. The film type must match the sealing method of the machine-ultrasonic or heat seal. Film width and roll size must align with the machine's input specifications. Custom sizes and thicknesses are available upon request.
Machines Mentioned
Tea and Coffee Bag Packing MaterialTea Bag Tag FilmThe Tea Bag Tag Film is a label film designed for automatic tea charter label machines, printed with high-speed 9-color printing to deliver clear, colView Machine
Tea and Coffee Bag Packing MaterialOuter Coffee Bag FilmThe outer coffee bag film is a laminated multiple layer plastic film designed for use in automatic coffee bagging lines.View Machine
Tea and Coffee Bag Packing MaterialNylon 's ThreadNylon 'S' Thread is a high tenacity filament used to stitch pyramid tea bags and filter paper bags during the sealing process.View Machine
Tea and Coffee Bag Packing MaterialFiilter Paper ThreadThe Filter Paper Thread is a 21/4s cotton thread designed for use in medium and fast filter paper machines.View MachineFrequently Asked Questions
Which filter film is best for whole leaf tea?
Nylon or PET film is best for whole leaf tea due to their high strength, transparency, and compatibility with ultrasonic sealing. They allow the leaf to remain visible while maintaining seal integrity.
Can I use biodegradable film in my current machine?
Yes, PLA biodegradable film can be used in Sengong's pyramid tea bag and drip coffee bag machines. It is compatible with ultrasonic sealing and meets the same mechanical requirements as other films.
What sizes are available for non-woven film?
Non-woven film is available in 120mmx50mm, 140mmx58mm, and 160mmx65mm. Each roll contains 6,000 pieces, and 6 rolls are packed per carton.
Is the film food grade and safe for tea?
Yes, all filter films supplied by Sengong are food grade, non-toxic, heat resistant, and tested to meet food safety standards. They are verified as safe for direct contact with tea and coffee.
Can I print on the film tags?
Yes, all film types support single or double-sided printing. Custom logo, color, and tag shapes are available upon request. Printing methods include gravure and screen printing.
How long does delivery take for filter film?
Delivery for filter film is 10 to 15 days after order confirmation. Custom sizes and printing may require additional time.
What is the difference between nylon and PLA film?
Nylon is durable, transparent, and heat-resistant, imported from Japan. PLA is biodegradable, made from corn fibre, and breaks down in soil. Nylon is ideal for long shelf life; PLA supports sustainability goals.
Tell Us What You Pack and We Will Match the Machine
Send us your product, target bag weight and output per hour. We reply with the model, film option and a full quotation.