Plank with anti-slip function and preparation method thereof

A method for preparing a plank with anti-slip function, the plank with anti-slip function comprises a hard support body and a soft anti-slip body clipped on the support body in a releasable manner;

• the anti-slip body has a planar body forming a use surface of the plank, and the planar body extends in a direction of the support body to form a clamping member;
• the support body is provided with a plurality of clamping grooves that cooperate with and are able to be releasable from the clamping member;
• the plurality of clamping grooves are provided with at least one limiting part that restricts the clamping member from escaping from the clamping groove in a reverse direction that the clamping member extends toward the clamping groove;
• the support body comprises a core and a plurality of shaping parts provided in the core to prevent the core from deforming;
• the core is a cubic structure with at least eight edge corners;
• the plurality of shaping parts are connected to at least three of the eight edge corners at the same time;
• the core of the support body is made of thermoplastic material, and the anti-slip body is made of elastomer material;
• comprising the following steps:
• a) pouring a liquid raw material of the elastomer into a mold;
• b) preparing and placing the support body into the mold with the clamping groove facing downward, so that the support body floats or is suspended in the liquid raw material;
• c) applying a pressure to the support body to sink in the liquid raw material, so that the liquid raw material enters the clamping groove of the support body;
• d) clamping the mold and maintaining the pressure to solidify the liquid raw material;
• wherein the support body is prepared by the following steps:
• 1), inputting a first raw material containing a first resin and a foaming agent into a main extruder for mixing, and extruding the mixed first raw material containing the first resin and the foaming agent by the main extruder into a main runner of a co-extrusion die, to form a pressure-retaining core;
• 2), inputting two shaping parts with belt shape from two side runners of the co-extrusion die respectively:
• 3), feeding, by an auxiliary extruder, a second raw material containing a second resin from a co-extrusion runner of the co-extrusion die, and extruding from an outlet of the die to obtain a reinforced shell with a frame shape;
• 4), extruding the pressure-retaining core, the shaping parts and the reinforced shell from their respective runners, to form a mold blank;
• 5), inputting the mold blank into a shaping mold;
• and foaming, in the shaping mold, the pressure-retaining core in the reinforced shell constrained by inner walls of the shaping mold, to fill the reinforced shell to form a support body precursor;
• 6), opening the clamping grooves on at least one surface of the support body precursor;
• where, the main runner, the side runners and co-extrusion runner are provided independently of one another;
• the pressure-retaining core is provided in the reinforced shell, and the shaping parts with belt shape are provided between two opposite surfaces of the pressure-retaining core and the reinforced shell;
• and a pre-formed foaming space is provided between the pressure-retaining core and the reinforced shell.