In-mold foam molded article, method for forming the same, and mold for use in forming the same

An in-mold foam molded article comprising:

• a foam body comprising olefin-based resin pre-expanded beads;
• and
• an insert member comprising an elongated connecting portion and movement resisting portions provided apart from one another in the elongated connecting portion, the insert member being subjected to insert molding upon in-mold foam molding using the olefin-based resin pre-expanded beads;
• wherein the foam body has a movement facilitating structure that facilitates relative movement between the insert member and the foam body during shrinkage of the in-mold foam molded article after release from a mold;
• the movement facilitating structure comprises a dividing space provided along a direction crossing the elongated connecting portion, wherein the dividing space divides the foam body into a plurality of divided foam parts.

An in-mold foam molded article comprising:

• a foam body including olefin-based resin pre-expanded beads;
• and
• an insert member including an elongated connecting portion and movement resisting portions provided apart from one another in the elongated connecting portion, the insert member being subjected to insert molding upon in-mold foam molding using the olefin-based resin pre-expanded beads;
• wherein the insert member includes a loop-shaped portion having a pair of transverse portions and a pair of longitudinal portions, and the foam body has a movement facilitating structure that facilitates relative movement between the insert member and the foam body during shrinkage of the in-mold foam molded article after release from a mold,
• the movement facilitating structure includes a movement allowing space that allows relative movement between the foam body and each of the movement resisting portions, and
• the movement allowing space is one of (i) a movement allowing space that allows the pair of transverse portions which function as movement resisting portions to be entirely exposed to an outside, and both ends of the pair of longitudinal portions, which function as connecting portions, to be exposed to the outside, and (ii) a movement allowing space that allows the pair of longitudinal portions, which function as the movement resisting portions, to be entirely exposed to the outside, and both ends of the pair of transverse portions, which function as the connecting portions, to be exposed to the outside.

An in-mold foam molded article comprising:

• a foam body comprising olefin-based resin pre-expanded beads;
• and
• an insert member comprising an elongated connecting portion and movement resisting portions provided apart from one another in the elongated connecting portion, the insert member being subjected to insert molding upon in-mold foam molding using the olefin-based resin pre-expanded beads;
• wherein the foam body has a movement facilitating structure that facilitates relative movement between the insert member and the foam body during shrinkage of the in-mold foam molded article after release from a mold;
• the movement facilitating structure comprises:
• a dividing space provided along a direction crossing the elongated connecting portion, wherein the dividing space divides the foam body into a plurality of divided foam parts;
• and
• a movement allowing space that allows relative movement between the foam body and each of the movement resisting portions.