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For an ergonomic and healthy sitting posture, the distribution of the seat load in the contact zone through a soft seat cushion is essential. Conventional polyurethane (PUR) foams have only a very limited ability to adapt the distribution of the seat load in the seat cushion to the individual person. In this paper, a potential analysis is conducted to show the extent to which a replacement model for PUR foams can be realized using thermoplastic polyurethane (TPU) materials in the Powder-bed-fusion/Laser-based-Polymers (PBF-LB/P) process. Based on fundamental experiments process parameters are investigated to meet proper material properties. The following characterization of comfort and durability requirements is based on standards for foam testing that are required in an automotive application.

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Characterization of Additive Manufactured Structures for the Development of Foam-Replacement Cushions using PBF-LB/P

  • 会议论文

  • 发表日期：

    2025年

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  • Carl Steinnagel,
  • Malte Falkner,
  • Roland Lachmayer

摘要

For an ergonomic and healthy sitting posture, the distribution of the seat load in the contact zone through a soft seat cushion is essential. Conventional polyurethane (PUR) foams have only a very limited ability to adapt the distribution of the seat load in the seat cushion to the individual person. In this paper, a potential analysis is conducted to show the extent to which a replacement model for PUR foams can be realized using thermoplastic polyurethane (TPU) materials in the Powder-bed-fusion/Laser-based-Polymers (PBF-LB/P) process. Based on fundamental experiments process parameters are investigated to meet proper material properties. The following characterization of comfort and durability requirements is based on standards for foam testing that are required in an automotive application.