Introduction
The document discusses the development of a unique bubble sizing cage for highly transparent and adhesive film production, particularly for laminating films with high EVA content intended for the Asian market. The goal was to eliminate marks on films adhered to PC/aluminium and steel sheets.

Development and Innovation
Macchi, in collaboration with a specialized manufacturer, pioneered a non-marking bubble guide material. By the late 1990s, Macchi had implemented systems that achieved:

• Higher film transparency due to the absence of sizing cage markings.
• Enhanced calibration effect, allowing for increased production values.

These innovations allowed the bubble cage arms to be positioned closer to the bubble, improving stabilization and permitting higher extrusion speeds.

Technical Specifications
The document lists available dimensions for film width, ranging from 1200 mm to 3200 mm, with various intermediate sizes.

Contact Information
Macchi S.p.A. is located in Venegono Inferiore, Italy, with contact details provided for further inquiries.