Hot slip shrink film JT02

How is the heat-slip shrink film cooled and shaped after stretching? What is the impact of cooling speed and shaping temperature on the performance of the final product?

In our company, the cooling and shaping process of the heat-slip shrink film after stretching is a delicate process that combines advanced technology with strict quality control. We use all imported high-quality raw materials and strictly control every step from materials to production process to ensure the excellent quality of the final product.
Cooling process
Rapid cooling: After stretching, the heat-slip shrink film will immediately enter the cooling stage. We use advanced cooling equipment to ensure that the film cools down quickly in a short time. This rapid cooling method can quickly fix the strain caused by stretching orientation and avoid unnecessary deorientation of the molecular chain in the subsequent process.
Temperature control: During the cooling process, temperature control is crucial. We use a precise temperature control system to ensure the stability and uniformity of the cooling temperature, thereby avoiding performance differences of the film due to temperature fluctuations.
Shaping process
Heat setting: After cooling, the film will enter the heat setting stage. At this stage, the film will be heat treated at a certain temperature and tension to eliminate internal stress, reduce shrinkage, and improve mechanical strength and elasticity. We use advanced heat setting equipment to ensure that the film can obtain uniform heating and tension distribution during the setting process.
Temperature and tension synergy: In the heat setting process, the synergy of temperature and tension is crucial. We accurately set the heat setting temperature and tension parameters according to the material and performance requirements of the film to obtain the best setting effect.
Cooling rate
Hardness and grain size: The cooling rate has a significant effect on the hardness and grain size of the heat-slip shrink film. Experiments have found that the faster the cooling rate, the higher the hardness of the film and the smaller the grain size. This is because rapid cooling can inhibit the growth of grains, thereby limiting the deformation of the film and increasing the hardness.
Surface flatness: The cooling rate also affects the surface flatness of the film. Rapid cooling can effectively suppress surface vibration, thereby reducing the undulations on the surface of the film and making the surface smoother.
Comprehensive performance: In our company's production process, we strictly control the cooling rate to obtain the best hardness, grain size and surface flatness, thereby ensuring that the comprehensive performance of the final product is optimal.
Setting temperature
Physical properties: A high setting temperature will improve the physical properties of the film, such as hardness, elastic modulus and tensile strength. However, too high a setting temperature may also reduce the light transmittance and flexibility of the film. Therefore, we need to choose a suitable setting temperature according to the specific application scenario and performance requirements.
Chemical properties: The setting temperature may also affect the chemical properties of the film. Too high a setting temperature may cause chemical changes in the film and reduce its chemical resistance. At the same time, it may also affect the barrier properties of the film, reducing its barrier ability to certain chemicals.
Thermal stability and service life: A high setting temperature will improve the thermal stability of the film, thereby enhancing its high temperature resistance. However, too high a setting temperature may also cause the film to degrade and crack during use, reducing its service life and resistance to thermal deformation. Therefore, when choosing the setting temperature, we need to comprehensively consider factors such as the working temperature, service life and resistance to thermal deformation of the film.
Company advantages and technical guarantees
Imported high-quality raw materials: Our company strictly controls suppliers and only uses imported advanced raw materials. These raw materials have excellent physical properties and chemical stability, providing a solid foundation for the production of high-quality heat-slip shrink films.
Advanced production equipment: We have advanced production equipment and a technical team to ensure quality inspection and BRC certification in every link from film making to slitting, folding to packaging. This not only makes each batch of products more stable and traceable, but also ensures the excellent quality of the final product.
Strict quality control: During the production process, we strictly follow international standards and certification requirements such as ISO, BRC, SGS, and FDA. From raw material procurement to finished product delivery, each step is subject to strict quality inspection and monitoring to ensure the excellent and stable quality of the final product.
Continuous and reliable supply: Our company has sufficient production capacity and a high degree of control over the price, quality and stable supply of raw materials. This provides a strong guarantee for the continuous production of high-quality heat-slip shrink film and can meet customers' demand for continuous and reliable supply of products.