Method for producing foam, and foam produced thereby

#This application claims priority to and the benefit of International Application No. PCT/KR2018/011884, filed Oct. 10, 2018, which published as WO 2019/088486 on May 9, 2019, and Korean Patent Application No. 10-2017-0142187, filed in the Korean Intellectual Property Office on Oct. 30, 2017, the entire disclosure of each of which is incorporated herein by reference.

#The present invention relates to a method of producing foam and foam produced by the same.

#Thermoplastic resin compositions widely used in various fields include reinforcing fillers, such as glass fibers, to improve heat resistance and mechanical strength, such as stiffness, depending on applications thereof. However, despite having good mechanical strength, such a thermoplastic resin composition including reinforcing fillers has problems of deterioration in surface properties or processability and increase in specific gravity with increasing content of the reinforcing fillers.

#FIG. 1(a) is a scanning electron microscopy (SEM) image showing a cross-section of a first extrudate prepared in an example according to the present invention, FIG. 1(b) is an SEM image showing a cross-section of the second extrudate prepared in the example, and FIG. 1(c) is an SEM image showing a cross-section of a third extrudate prepared in a comparative example.

#Description of known functions and constructions which may unnecessarily obscure the subject matter of the present invention will be omitted.

#Further, terms to be described below are defined in consideration of functions of the present invention, and these may vary with the intention or practice of a user or an operator. Therefore, such terms should be defined based on the entire disclosure.

#Method of Producing Foam