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The difference between one-way stretching and two-way stretching

May 10, 2024

The difference between one-way stretching and two-way stretching

Uniaxial stretching and biaxial stretching are two different technologies in material processing. They are used in various materials, such as plastics, polytetrafluoroethylene (PTFE), etc., to improve the physical and mechanical properties of the materials. Here are the differences between the two technologies:
 
One-way stretch:
Unidirectional stretching refers to the process of stretching only along the length direction of the board.
This process is relatively simple and suitable for use in experiments.
Stretching under high temperature and high speed conditions can rearrange the polymer chains along the stretching direction, thereby strengthening the bonding force between molecular chains and improving the strength of the material.
The elongation of uniaxial stretching is usually only 10% to 15% of the original sheet.
Application scenarios include geogrids, packaging of lightweight products such as disposable paper cups, etc.
Two-way stretch:
 
Two-way stretch:
Biaxial stretching refers to the process of stretching in two vertical directions (longitudinal and transverse) simultaneously or step by step at a certain temperature and set speed.
The properties of materials that have been biaxially stretched are greatly improved in both directions, and the comprehensive performance meets the needs of practical applications.
Biaxially oriented cigarette packet film (BOPP) is a multi-layer co-extruded film with good physical stability, mechanical strength, air tightness, high transparency and gloss, and is suitable for printing films, etc.
 
To sum up, the main difference between uniaxial stretching and biaxial stretching lies in the stretching direction and process. Uniaxial stretching is performed in only one direction, while biaxial stretching is performed in two perpendicular directions at the same time or in steps, so that the material has better properties in both directions.

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Huatao Group se fundó en 2008. Somos un proveedor profesional y líder de varios rodillos, motores, cajas de cambios y juntas giratorias para el plástico y el caucho, metalurgia, papel, tablero corrugado, impresión y colorante y industrias textiles durante 15 años de experiencia. . Con un fuerte compromiso con la innovación, la confiabilidad y la satisfacción del cliente, Huatao Group se ha convertido en un proveedor de confianza en la industria y nuestros productos se han exportado a más de 96 países y tienen una buena reputación. Productos: Cajas de cambios: Huatao ofrece una amplia gama de cajas de cambios diseñadas para diversas aplicaciones en todas las industrias. Estas cajas de cambios son conocidas por su eficiencia, durabilidad y transmisión precisa de energía. Están disponibles en diferentes tipos, incluidas las cajas de cambios helicoidales, biselas, de gusanos y planetarias, que atienden las necesidades específicas de los clientes. Motores: Huatao proporciona una selección completa de motores adecuados para una amplia gama de aplicaciones. Sus ofertas de motor incluyen motores eléctricos, servomotores y motores especializados para industrias específicas. Estos motores...
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