Matting properties of CPP matting film

Matting performance of CPP matting film

The film adopts multi-layer co-extrusion casting processing technology, with high impact strength and good flexibility, can be used directly for bag making, for the varieties that do not require high barrier requirements, such as for advanced shopping bags, bread bags, napkins and other packaging.

Due to the presence of methyl in the molecular structure of polypropylene, hindering the movement of the polypropylene molecular chain, resulting in poor low-temperature resistance of polypropylene, its glass transition temperature of 1O ℃, in the use of low-temperature brittle cracking will occur, can be copolymerised and blended toughening method for modification. Due to the copolymerisation of modified product quality and stability, we can take propylene an ethylene copolymer to improve the low temperature performance of the film.

Comparison of CPP matting film and BOPP matting film

CPP matte film and domestic A, B two production of BOPP matte film technical indicators for comparison, CPP matte film gloss up to 3.5%, and commonly used BOPP matte film gloss 4.7% than a significant reduction. The haze is as high as 78.5%, which is slightly higher than the haze of BOPP matting film, indicating that the matting performance of CPP matting film has exceeded that of BOPP matting film.

The heat sealing temperature of CPP matte film is 129℃ (the temperature when the heat sealing condition is 0.2MPa pressure, the heat sealing time is 1 second, and the heat sealing strength reaches 8N/cm), while the heat sealing temperature of BOPP matte film is up to 140℃, which indicates that CPP matte film has the characteristics of easy heat sealing bag-making, and CPP matte film also has the characteristics of softness and low heat shrinkage. It is suitable as single-layer packaging material for bag making and printing.

Matte CPP and matte BOPP film physical properties comparison

Fourth, the application range of matte CPP

CPP matte film is in the two-way stretch polypropylene matte film after the emergence of unstretched polypropylene matte film, due to the use of multi-layer co-extrusion cast processing technology. Different functional materials can be combined into the same film, giving the product a variety of excellent performance. At the same time the use of cast processing thickness adjustment can be convenient in the following products have been applied.

1. Adopting A/B/C combination, A layer for corona treatment, 20um CPP matting film can replace BOPP matting film for lamination.

2. Using A/B/C combination, A layer using heat sealing layer material. 30-70um CPP matte film without the need for composite can be made into a variety of thickness of the advertising booklet, gift bags, and BOPP matte film composite bags compared to the CPP matte film has a good softness, packaging effect is good. As there is no need for composite, do not use solvents, the use of CPP matte film is more economical, more environmentally friendly.

3. CPP matte film is especially suitable for surface packaging, such as adding antibacterial materials in the A layer of CPP matte film that is no need to disinfection can be used for facial tissues, wet wipes and other sanitary products packaging.

Nanjing Suminoe Precision Machinery Co., Ltd. has professional sheet production line, the company's main sheet machine manufacturing production line: PET/PRET sheet production line, PP sheet production line, PP vacuum profile extrusion line, PP/PC vacuum sheet production line, PC/PP corrugated sheet production line, PVDF photovoltaic backing sheet production line, PMMA acrylic sheet production line, PE waterproofing membrane production line, high-performance barrier sheet production line. High-performance barrier sheet production line, optical panel production line, multilayer co-extruded sheet production line, etc. 

Translated with DeepL.com (free version)