NDLI: Air Permeability, Shock Absorption Ability, and Flexural Strength of 3D-Printed Perforated ABS Polymer Sheets with 3D-Knitted Fabric Cushioning for Sports Face Guard Applications

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Air Permeability, Shock Absorption Ability, and Flexural Strength of 3D-Printed Perforated ABS Polymer Sheets with 3D-Knitted Fabric Cushioning for Sports Face Guard Applications

Content Provider	MDPI
Author	Aung, Thet Churei, Hiroshi Tanabe, Gen Kinjo, Rio Togawa, Kaito Li, Chenyuan Tsuchida, Yumi Tun, Phyu Hlaing, Shwe Takahashi, Hidekazu Ueno, Toshiaki
Copyright Year	2021
Description	Sports face guards (FGs) are devices that protect athletes from maxillofacial injury or ensure rapid return to play following orofacial damage. Conventional FGs are uncomfortable to wear owing to stuffiness caused by poor ventilation and often slip off due to increase in weight due to absorption of moisture from perspiration, lowering players’ performance. Herein, combinations of 3D-printed perforated acrylonitrile butadiene styrene (ABS) polymer sheets and 3D-knitted fabrics with honeycomb structures as cushioning materials were investigated to balance better wearing feel and mechanical properties. The flexural strength, weight, and shock absorption ability of, and air flow rate through, the ABS sheets with five different perforation patterns were evaluated and compared with those of conventional FG materials comprising a combination of polycaprolactone sheets for the medical splint and polychloroprene rubber for the cushioning material. The ABS sheets having 10% open area and 2.52 mm round holes, combined with knitted fabric cushioning, exhibited the requisite shock absorbing, higher air permeability, and lower weight properties than the conventional materials. Our results suggest that FGs fabricated using combinations of 3D-printed perforated ABS polymer sheets and 3D-knitted fabrics with honeycomb structures may impart enhanced wearing comfort for athletes.
Starting Page	1879
e-ISSN	20734360
DOI	10.3390/polym13111879
Journal	Polymers
Issue Number	11
Volume Number	13
Language	English
Publisher	MDPI
Publisher Date	2021-06-05
Access Restriction	Open
Subject Keyword	Polymers Textiles Face Guard 3d-printed Polymer 3d-knitted Fabric Flexural Strength Shock Absorption Ability Air Permeability Wearing Comfort
Content Type	Text
Resource Type	Article

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