| 摘要 |
PURPOSE: Provided is an economical harmless sheet, which has excellent durability, chemical resistance, scratch resistance, processability and flexibility and does not emit environmental hormones, and thus is harmless to the human body. CONSTITUTION: The harmless sheet has physical properties equivalent to those of a vinyl chloride sheet and is formed by mixing polypropylene resin with polyethylene sheet. In the harmless sheet, the polyethylene resin is present in an amount of 25-50 wt% to realize an elongation ratio of 100-1000%, a tensile strength of 4000-8000 g/in, a tear strength of 100-400 g/in and a surface tension of 30-44 dyne/cm2. Particularly, the polyethylene resin includes 5-30 wt% of HDPE mixed with 10-35 wt% of LDPE.
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