What is the difference between blown film stone paper and cast film stone paper
DATE：2024/8/23 14:41:06 / READ： / SOURCE：This station
Stone paper is a new type of environmentally friendly paper, mainly made of limestone powder and PE polyethylene, and processed into paper through a series of processes. The production processes currently used include blown film, cast film, and calendering, among which blown film and cast film are the main production methods. The stone paper produced by these two processes has different characteristics and applications. Below, the editor will elaborate on the differences between these two stone paper production processes from three aspects: production process, performance characteristics, and application scope.
1、 Production process
Film blowing process: Film blowing is a process of melting plastic particles and extruding them through a mold to form a thin film. When making stone paper, first mix limestone powder with materials such as polyethylene, then heat and melt it in an extruder, and then extrude the melted mixture through a circular mold. Blow it into a thin film with gas, and cool it to form smooth stone paper. This process usually enables large-scale production and is fast.
Casting process: The casting process involves mixing limestone powder with a plastic substrate, casting it onto a horizontal surface, and then heating and cooling it to form paper. This method can produce stone paper with different thicknesses and characteristics by controlling the casting thickness and cooling rate. Although the production speed of the casting process is slow, a more uniform material structure can be obtained.
2、 Performance characteristics
Stone paper made by blown film technology: Stone paper made by blown film technology usually has high strength and toughness, can withstand certain tensile and compressive forces, and is suitable for some load-bearing and wear-resistant occasions. In addition, the surface of blown film stone paper is smooth and suitable for printing, with bright and realistic colors.
Cast stone paper: Stone paper produced by cast technology is generally soft and has good flexibility, suitable for making products that require folding or curling, such as packaging materials or handicrafts. Its surface treatment is relatively uniform, which can maintain the texture well, suitable for the requirements of high-end paper, and the printing effect is also quite excellent.
3、 Application scope
Blown film stone paper: Due to its excellent physical properties, blown film stone paper is often used in fields such as outer packaging, shopping bags, billboards, etc., which can effectively improve durability and waterproofing.
Cast stone paper: Cast stone paper is widely used in fields such as stationery, art, and high-end packaging, and is favored by designers and consumers due to its softness and elegant appearance.
From the above explanation, it can be seen that there are significant differences in the production process, performance characteristics, and application scope of stone paper made by blown film and cast film processes. Therefore, when selecting a suitable production process, it is necessary to choose the appropriate production method based on the intended use and performance requirements of the final product, in order to achieve the best product effect.
Film blowing process: Film blowing is a process of melting plastic particles and extruding them through a mold to form a thin film. When making stone paper, first mix limestone powder with materials such as polyethylene, then heat and melt it in an extruder, and then extrude the melted mixture through a circular mold. Blow it into a thin film with gas, and cool it to form smooth stone paper. This process usually enables large-scale production and is fast.
Casting process: The casting process involves mixing limestone powder with a plastic substrate, casting it onto a horizontal surface, and then heating and cooling it to form paper. This method can produce stone paper with different thicknesses and characteristics by controlling the casting thickness and cooling rate. Although the production speed of the casting process is slow, a more uniform material structure can be obtained.
Stone paper made by blown film technology: Stone paper made by blown film technology usually has high strength and toughness, can withstand certain tensile and compressive forces, and is suitable for some load-bearing and wear-resistant occasions. In addition, the surface of blown film stone paper is smooth and suitable for printing, with bright and realistic colors.
Cast stone paper: Stone paper produced by cast technology is generally soft and has good flexibility, suitable for making products that require folding or curling, such as packaging materials or handicrafts. Its surface treatment is relatively uniform, which can maintain the texture well, suitable for the requirements of high-end paper, and the printing effect is also quite excellent.
3、 Application scope
Blown film stone paper: Due to its excellent physical properties, blown film stone paper is often used in fields such as outer packaging, shopping bags, billboards, etc., which can effectively improve durability and waterproofing.
Cast stone paper: Cast stone paper is widely used in fields such as stationery, art, and high-end packaging, and is favored by designers and consumers due to its softness and elegant appearance.
Author：admin