The Experts below are selected from a list of 9 Experts worldwide ranked by ideXlab platform

Jürgen Breil - One of the best experts on this subject based on the ideXlab platform.

  • Chapter 11 – Oriented film technology
    Multilayer Flexible Packaging, 2020
    Co-Authors: Jürgen Breil
    Abstract:

    Publisher Summary This chapter focuses on the oriented film technologies. The majority of oriented plastic films are biaxially oriented, the characteristics of which ideally meet the demands on modern flexible packaging. The biaxial orientation results in a significant increase in the mechanical properties such as Young's modulus and tensile strength, a considerable improvement in the optical properties such as haze and gloss, as well as the barrier properties. The overall improved barrier properties are attained due to the orientation of the molecule chains. Stretching in Machine Direction is normally done by means of a Machine Direction Orienter (MDO) via rolls with increasing speed. For all transverse oriented films, the stretching process takes place by means of a transverse Direction Orienter (TDO), where the film is fixed on both ends and, upon passing through an oven at various temperatures, is stretched in a transverse Direction. Biaxial orientation, in the Machine and transverse Direction, can be done either sequentially or simultaneously. In the sequential process, an MDO and a tenter frame are successively utilized. In sequential orientation, the stretching process occurs in two steps and a relatively small process window in terms of temperatures and stretching ratios is available. With a worldwide consumption of over 6 million tons, biaxially oriented polypropylene (BOPP) films constitute by far the largest share in biaxially oriented film. The applications are very diverse and can basically be split into packaging applications, not only in the food but also in the nonfood sector. Biaxially oriented polyester films (BOPET), with approximately 2 million tons per year, are the second most common oriented film following BOPP.

  • Oriented Film Technology
    Multilayer Flexible Packaging, 2009
    Co-Authors: Jürgen Breil
    Abstract:

    Publisher Summary This chapter focuses on the oriented film technologies. The majority of oriented plastic films are biaxially oriented, the characteristics of which ideally meet the demands on modern flexible packaging. The biaxial orientation results in a significant increase in the mechanical properties such as Young's modulus and tensile strength, a considerable improvement in the optical properties such as haze and gloss, as well as the barrier properties. The overall improved barrier properties are attained due to the orientation of the molecule chains. Stretching in Machine Direction is normally done by means of a Machine Direction Orienter (MDO) via rolls with increasing speed. For all transverse oriented films, the stretching process takes place by means of a transverse Direction Orienter (TDO), where the film is fixed on both ends and, upon passing through an oven at various temperatures, is stretched in a transverse Direction. Biaxial orientation, in the Machine and transverse Direction, can be done either sequentially or simultaneously. In the sequential process, an MDO and a tenter frame are successively utilized. In sequential orientation, the stretching process occurs in two steps and a relatively small process window in terms of temperatures and stretching ratios is available. With a worldwide consumption of over 6 million tons, biaxially oriented polypropylene (BOPP) films constitute by far the largest share in biaxially oriented film. The applications are very diverse and can basically be split into packaging applications, not only in the food but also in the nonfood sector. Biaxially oriented polyester films (BOPET), with approximately 2 million tons per year, are the second most common oriented film following BOPP.

Luis Barral - One of the best experts on this subject based on the ideXlab platform.

  • Influence of the stretching in the crystallinity of biaxially oriented polypropylene (BOPP) films
    Journal of Thermal Analysis and Calorimetry, 2005
    Co-Authors: F. J. Díez, C. Alvarińo, M. J. Abad, S. García-garabal, C Ramirez, J Cano, J Lopez, Luis Barral
    Abstract:

    The production of biaxially oriented polypropylene (BOPP) films, by tenter-frame technology in its different steps, was studied to find the crystalline morphology of these films. DMA, DSC, and WAXD measurements and tensile tests were carried out for the cast film, the MDO film (the produced film in the Machine Direction Orienter unit) and BOPP film. The obtained results suggest that the stretchings lead to a strong alignment of the crystals, producing fibers oriented in the stretching Direction. This fact can be proved by WAXD, DMA, and tensile tests, moreover the DSC technique is not sensitive to detect these changes.

F. J. Díez - One of the best experts on this subject based on the ideXlab platform.

  • Influence of the stretching in the crystallinity of biaxially oriented polypropylene (BOPP) films
    Journal of Thermal Analysis and Calorimetry, 2005
    Co-Authors: F. J. Díez, C. Alvarińo, M. J. Abad, S. García-garabal, C Ramirez, J Cano, J Lopez, Luis Barral
    Abstract:

    The production of biaxially oriented polypropylene (BOPP) films, by tenter-frame technology in its different steps, was studied to find the crystalline morphology of these films. DMA, DSC, and WAXD measurements and tensile tests were carried out for the cast film, the MDO film (the produced film in the Machine Direction Orienter unit) and BOPP film. The obtained results suggest that the stretchings lead to a strong alignment of the crystals, producing fibers oriented in the stretching Direction. This fact can be proved by WAXD, DMA, and tensile tests, moreover the DSC technique is not sensitive to detect these changes.

C. Alvarińo - One of the best experts on this subject based on the ideXlab platform.

  • Influence of the stretching in the crystallinity of biaxially oriented polypropylene (BOPP) films
    Journal of Thermal Analysis and Calorimetry, 2005
    Co-Authors: F. J. Díez, C. Alvarińo, M. J. Abad, S. García-garabal, C Ramirez, J Cano, J Lopez, Luis Barral
    Abstract:

    The production of biaxially oriented polypropylene (BOPP) films, by tenter-frame technology in its different steps, was studied to find the crystalline morphology of these films. DMA, DSC, and WAXD measurements and tensile tests were carried out for the cast film, the MDO film (the produced film in the Machine Direction Orienter unit) and BOPP film. The obtained results suggest that the stretchings lead to a strong alignment of the crystals, producing fibers oriented in the stretching Direction. This fact can be proved by WAXD, DMA, and tensile tests, moreover the DSC technique is not sensitive to detect these changes.

M. J. Abad - One of the best experts on this subject based on the ideXlab platform.

  • Influence of the stretching in the crystallinity of biaxially oriented polypropylene (BOPP) films
    Journal of Thermal Analysis and Calorimetry, 2005
    Co-Authors: F. J. Díez, C. Alvarińo, M. J. Abad, S. García-garabal, C Ramirez, J Cano, J Lopez, Luis Barral
    Abstract:

    The production of biaxially oriented polypropylene (BOPP) films, by tenter-frame technology in its different steps, was studied to find the crystalline morphology of these films. DMA, DSC, and WAXD measurements and tensile tests were carried out for the cast film, the MDO film (the produced film in the Machine Direction Orienter unit) and BOPP film. The obtained results suggest that the stretchings lead to a strong alignment of the crystals, producing fibers oriented in the stretching Direction. This fact can be proved by WAXD, DMA, and tensile tests, moreover the DSC technique is not sensitive to detect these changes.