Effect of nano-texturing on adhesion of thermoplastic resin against textured steel plate

Motoyuki Murashima, Noritsugu Umehara, Hiroyuki Kousaka

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)


Long Fiber Thermoplastic-Direct (LFT-D), a new stamping method, has been developed to achieve the short cycle-time manufacturing of Carbon-Fiber-Reinforced thermoplastics (thermoplastic CFRP). In LFT-D method, to shorten cooling time is one of the effective way for achieving more productive manufacturing. During ejection sequence in the LFT-D, thermoplastic resin parts adhere stronger than previous method. High adhesion affects smoothness of the component surface, cycle-time and requested specifications of equipment. So, it is required to reduce the adhesion between the metal mold and thermoplastic resin. This paper reports the effect of nano-texturing on adhesion of thermoplastic resin against the textured steel around glassy-transition temperature. Experimental results show that the adhesion strength increases proportionally with the ratio of contact area. The lowest adhesion strength on nano-textured surface is 0.18 MPa, which is 66% lower than that of flat surface. It is clarified that surface adhesion energy increases with the ratio of contact area Acontact to circumference of contact area Lcircumference.

Original languageEnglish
Pages (from-to)159-167
Number of pages9
JournalTribology Online
Issue number2
Publication statusPublished - 2016
Externally publishedYes


  • Adhesion
  • Mold
  • Nano-texturing
  • Stamping
  • Thermoplastic CFRP
  • Thermoplastic resin

ASJC Scopus subject areas

  • Surfaces, Coatings and Films


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