PET unidirectional stretching sheet production line
DATE：2023/7/28 14:24:46 / READ： / SOURCE：This station
The PET unidirectional stretching sheet production line uses a series of process steps to extrude, stretch, cool, and coil PET raw materials to produce PET unidirectional stretching sheets with excellent performance. The following will provide a detailed introduction to the working principle of the PET unidirectional stretching sheet production line, as well as the application fields of PET sheets in practical life.
1、 Working principle:
Raw material preparation: Firstly, the PET raw material is melted and mixed to form a uniform melt. PET raw materials often exist in the form of granules or sheets, which are melted into a viscous melt through stirring and heating.
Extruder: The molten PET melt is extruded through an extruder. The extruder consists of a screw and a cylinder, and the screw rotates to push the melt forward. During the extrusion process, by adjusting parameters such as temperature, pressure, and speed of the extruder, the fluidity and extrusion amount of the melt are controlled to ensure stable quality of the extruded PET melt.
Stretching machine: The extruded PET melt enters the stretching machine for stretching. The stretching machine uses a series of rollers and tension control systems to stretch PET melt into the required film thickness and width. During the stretching process, the stretching ratio of the film is controlled by adjusting the speed and spacing of the rollers to maintain stable size and performance.
Tension control system: During the stretching process, the tension control system is used to control the tension of the film during extrusion and stretching processes. By adjusting the tension force and tension distribution of the tension control system, the stability and uniformity of the film are ensured. The tension control system usually consists of tension sensors, tension controllers, and tension adjustment devices.
Cooling system: The stretched film enters the cooling system for cooling and solidification. The cooling system usually consists of a cooling roller and a cooling fan. Through the cooling effect of the cooling roller and the wind force of the cooling fan, the film is quickly cooled to the curing temperature, ensuring the shape and performance of the film.
Coiler: The cooled and solidified film is rolled into rolls through the coiler, completing the entire production process. The coiling machine is usually composed of a coiling roller and a tension control device. By adjusting the speed of the coiling roller and the tension force of the tension control device, the coiling tension and tightness of the film are controlled to ensure stable quality of the coiling film.
2、 Application: PET unidirectional stretching sheets have excellent physical and chemical properties and are widely used in packaging, construction, electronics, printing and other fields. The specific applications are as follows:
Packaging field: PET unidirectional stretching sheets are often used for food packaging, pharmaceutical packaging, cosmetic packaging, and so on. It has excellent transparency, heat resistance, and tear resistance, which can effectively protect the quality and safety of packaged items.
Construction field: PET unidirectional tensile sheets are often used for insulation materials, roofing materials, and waterproofing materials. It has good weather resistance and aging resistance, can effectively block moisture and ultraviolet rays, and improve the insulation and waterproofing performance of buildings.
Electronic field: PET unidirectional stretching sheets are commonly used in battery separators, capacitors, and insulation materials. It has excellent electrical insulation performance and high-temperature resistance, which can effectively protect the safety and stability of electronic devices.
Printing field: PET unidirectional stretching sheets are commonly used for printing substrates, labels, and packaging materials. It has a flat surface and good printing performance, which can achieve high-definition printing effects and rich pattern design.
3、 Advantages compared to other sheets: PET unidirectional stretching sheets have the following advantages compared to other sheets:
Excellent physical properties: PET unidirectional tensile sheets have high strength, high toughness, and excellent heat resistance, which can withstand large tensile and impact forces, ensuring the stability and durability of the product.
Excellent transparency: PET unidirectional stretching sheet material has good transparency and glossiness, which can display the appearance and texture of the product, improve its added value and market competitiveness.
Good chemical resistance: PET unidirectional tensile sheets have good chemical resistance, can resist acid alkali corrosion and chemical solvent erosion, and ensure the stability and safety of the product.
Environmental sustainability: PET unidirectional stretching sheet is a recyclable material with good environmental performance. By recycling and reusing, resource consumption and environmental pollution can be reduced, meeting the requirements of sustainable development.
In summary, the PET unidirectional stretching sheet production line produces PET unidirectional stretching sheets with excellent performance through processes such as extrusion, stretching, cooling, and coiling. PET unidirectional stretching sheets are widely used in fields such as packaging, architecture, electronics, and printing, with excellent physical properties, transparency, chemical resistance, and environmental sustainability. Compared with other sheets, they have obvious advantages.
Raw material preparation: Firstly, the PET raw material is melted and mixed to form a uniform melt. PET raw materials often exist in the form of granules or sheets, which are melted into a viscous melt through stirring and heating.
Extruder: The molten PET melt is extruded through an extruder. The extruder consists of a screw and a cylinder, and the screw rotates to push the melt forward. During the extrusion process, by adjusting parameters such as temperature, pressure, and speed of the extruder, the fluidity and extrusion amount of the melt are controlled to ensure stable quality of the extruded PET melt.
Stretching machine: The extruded PET melt enters the stretching machine for stretching. The stretching machine uses a series of rollers and tension control systems to stretch PET melt into the required film thickness and width. During the stretching process, the stretching ratio of the film is controlled by adjusting the speed and spacing of the rollers to maintain stable size and performance.
Tension control system: During the stretching process, the tension control system is used to control the tension of the film during extrusion and stretching processes. By adjusting the tension force and tension distribution of the tension control system, the stability and uniformity of the film are ensured. The tension control system usually consists of tension sensors, tension controllers, and tension adjustment devices.
Cooling system: The stretched film enters the cooling system for cooling and solidification. The cooling system usually consists of a cooling roller and a cooling fan. Through the cooling effect of the cooling roller and the wind force of the cooling fan, the film is quickly cooled to the curing temperature, ensuring the shape and performance of the film.
Coiler: The cooled and solidified film is rolled into rolls through the coiler, completing the entire production process. The coiling machine is usually composed of a coiling roller and a tension control device. By adjusting the speed of the coiling roller and the tension force of the tension control device, the coiling tension and tightness of the film are controlled to ensure stable quality of the coiling film.
2、 Application: PET unidirectional stretching sheets have excellent physical and chemical properties and are widely used in packaging, construction, electronics, printing and other fields. The specific applications are as follows:
Packaging field: PET unidirectional stretching sheets are often used for food packaging, pharmaceutical packaging, cosmetic packaging, and so on. It has excellent transparency, heat resistance, and tear resistance, which can effectively protect the quality and safety of packaged items.
Construction field: PET unidirectional tensile sheets are often used for insulation materials, roofing materials, and waterproofing materials. It has good weather resistance and aging resistance, can effectively block moisture and ultraviolet rays, and improve the insulation and waterproofing performance of buildings.
Electronic field: PET unidirectional stretching sheets are commonly used in battery separators, capacitors, and insulation materials. It has excellent electrical insulation performance and high-temperature resistance, which can effectively protect the safety and stability of electronic devices.
Printing field: PET unidirectional stretching sheets are commonly used for printing substrates, labels, and packaging materials. It has a flat surface and good printing performance, which can achieve high-definition printing effects and rich pattern design.
3、 Advantages compared to other sheets: PET unidirectional stretching sheets have the following advantages compared to other sheets:
Excellent physical properties: PET unidirectional tensile sheets have high strength, high toughness, and excellent heat resistance, which can withstand large tensile and impact forces, ensuring the stability and durability of the product.
Excellent transparency: PET unidirectional stretching sheet material has good transparency and glossiness, which can display the appearance and texture of the product, improve its added value and market competitiveness.
Good chemical resistance: PET unidirectional tensile sheets have good chemical resistance, can resist acid alkali corrosion and chemical solvent erosion, and ensure the stability and safety of the product.
Environmental sustainability: PET unidirectional stretching sheet is a recyclable material with good environmental performance. By recycling and reusing, resource consumption and environmental pollution can be reduced, meeting the requirements of sustainable development.
In summary, the PET unidirectional stretching sheet production line produces PET unidirectional stretching sheets with excellent performance through processes such as extrusion, stretching, cooling, and coiling. PET unidirectional stretching sheets are widely used in fields such as packaging, architecture, electronics, and printing, with excellent physical properties, transparency, chemical resistance, and environmental sustainability. Compared with other sheets, they have obvious advantages.
Author：admin