- 1974年
 - 
Tonen Sekiyu Kagaku Co., Ltd. (Now Tonen Kagaku GK)started nonwoven business
Installed a commercial size manufacturing facility at Kawasaki plant 
- 1977年
 - Stopped the operation while R&D activity continued at Toa Nenryo Kogyo Co., Ltd. (Now ENEOS Corp.)
 
- 1981年
 - Installed a manufacturing facility at Nichiei Kogyo Co., Ltd., Isehara plant
 
- 1986年
 - Expanded the manufacturing facility at Nichiei Kogyo Isehara plant
 
- 1987年
 - 
Established Tonen Tapyrus Co. Ltd.
 
- 1997年
 - Revamped the calender processing facility.
 
- 2003年
 - 
Separated from Tonen Kagaku Co. Ltd. (Dec 12th)
Company name changed to Tapyrus Co., Ltd. 
- 2007年
 - Expanded the manufacturing facility at Tapyrus Isehara plant.
 
- 2011年
 - 
Founded TAPYRUS (THAILAND) Co., Ltd.,
 
- 2012年
 - and completed construction of Thai plant facility
 
- 2019年
 - 
Expanded the calender processing facility.
Expanded the manufacturing facility at TAPYRUS(THAILAND) Co., Ltd.