tisu 4dOver the last decade, 4D printing has emerged by incorporating time as the fourth dimension. The concept of 4D printing was first described in 2013 by Tibbitts of the SelfKertas Tisu, 1028 – 7028. Ketam , 0458 – 2458. Ketiak, 0920 – 2920. Kipas, 1001 – 7001. Kipas Kertas, 1116 – 7116. Kipas Sutra, 0710.