1. A mold comprising a pair of male and female mold parts adapted for producing a multilayer molded article by supplying a molten thermoplastic resin to the rear sides of a first skin material and a second skin material that are adjacent to each other on the same plane and adhering the skin materials and the thermoplastic resin to each other, wherein said pair of mold parts comprises a male mold part and a female mold part, provided that one of said mold parts is adapted so as to be opposing the rear side of the first skin material and of the second skin material when the multilayer molded material is being produced, and the mold part opposing the rear sides of the skin materials includes:
a first gate for supplying the molten thermoplastic resin to the rear side of the first skin material,
a second gate for supplying the molten resin to the rear side of the second skin material,
a molding surface and a resin blocking member which is so embedded in the molding surface of the mold part so as to extend substantially along a boundary portion between the first and second skin materials, and
a movable member for projecting the resin blocking member from the molding surface.
2. A mold according to claim 1, wherein the resin blocking member is one or more resin blocking plates and the resin blocking plate(s) isare embedded, at the both sides or one side of the boundary portion, between the boundary portion and the gate(s).
3. A mold according to claim 2, wherein the resin blocking plates are embedded at the both sides of the boundary portion.
4. A mold according to claim 2, wherein the mold part opposing the rear sides of the skin materials includes a holding member embedded at a position of the molding surface corresponding to the boundary portion for tightly holding the boundary portion.
5. A mold according to claim 1, wherein the resin blocking member is a holding member for tightly holding the boundary portion of the first and second skin materials, and the holding member is embedded at a position of the molding surface corresponding to the boundary portion.
6. A mold according to claim 5, wherein side walls of the holding member serve as resin blocking walls for preventing the resins from the first and second gates from flowing toward the boundary portion when the holding member is projecting.
7. A mold according to claim 1, wherein one of the mold parts is opposing the front sides of the skin materials and includes an elongated projection continuously extending along the boundary portion at a position corresponding to the boundary portion.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A tray comprising:
a central portion; and
a raised rim surrounding the central portion, and
wherein a portion of the rim has an undulate height profile.
2. A tray according to claim 1, wherein a front portion of the rim has an undulate height profile.
3. A tray according to claim 1, wherein the tray is adapted to be removably supported at a front of a chair for access by the chair occupant.
4. A tray according to claim 1, wherein the front portion of the rim comprises a medial portion flanked by two rest portions that are lower than the medial portion.
5. A tray according to claim 4, wherein the front portion of the rim comprises two shoulder portions that are higher than the two rest portions, each of the rest portions being flanked by the medial portion and a respective shoulder portion.
6. A tray according to claim 5, wherein the rest portions have gently curved upper surfaces and rounded upper edges.
7. A tray adapted to be removably supported at a front of a chair for access by the chair occupant, the tray comprising:
a top side;
an underside, and
at least one wheel mounted to the underside to rotate for movably supporting the tray on a bearing surface of the chair.
8. A tray according to claim 7, wherein the tray comprises a plurality of wheels mounted to the underside to rotate about parallel axes for movably supporting the tray on a bearing surface of the chair.
9. A tray according to claim 8, wherein the plurality of wheels comprises three wheels, two of the wheels being laterally spaced and rotatable about a common axis, and the third wheel being centrally located and rotatable about an axis offset from the common axis.