Use of polyhydroxy compounds as plasticizers for polyvinyl alcohol in 3D printing processes

摘要

The present invention provides a three-dimensional object with a support structure comprising polyvinyl alcohol (PVOH), depositing and solidifying a molten thermoplastic polymer on the support structure to form a three-dimensional preform. Wherein the support structure comprises polyvinyl alcohol (PVOH) and up to 20% by weight of formula I, II or III: R1-C (CH2-OH) 3 (I); [R1-C (CH2 -OH) 2CH2] 2O (II); (R1) C (CH2-OH) 2CH2-O-CH2C (CH2-OH) C (R1) CH2-O-CH2C (CH2-OH) 2R1 (III) [wherein , R1 = H, CH3, C2H5, C3H7, CH2OH]. The support structure can be dissolved from the three-dimensional object.