Seat pad and seat pad manufacturing method
AssigneeArchem Inc.
InventorsYukiko Yamaguchi, Yoshiyuki Takahashi, Taichi Itabashi
Life of this patent
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Abstract
A seat pad with improved thermal comfort and improved vibration absorptivity and a seat pad manufacturing method for easily obtaining the seat pad are provided. In the seat pad (1), when a surface portion (2) up to 10 mm from a surface (1f) is cut out and the air permeability AR1 of the surface portion (2) is measured in compliance with JIS K 6400, the air permeability AR1 is more than 5 cc/cm2/sec and 25 cc/cm2/sec or less. The seat pad manufacturing method is a seat pad manufacturing method for obtaining the seat pad (1) by supplying a molding material into a molding die and performing foam molding. As the molding die, a molding die an inner surface of which is covered with polystyrene or polyethylene is used.
Claims7
A seat pad comprising a surface portion up to 10 mm from a surface,
- wherein
- an air permeability of the surface portion is measured in compliance with JIS K 6400-4:2004, the air permeability is more than 5 cc/cm2/sec and at or less than 25 cc/cm2/sec,
- the seat pad further comprises a cushion pad,
- a seat portion of the cushion pad is partitioned into an under-buttocks portion and an under-knees portion,
- the air permeability of the surface portion of the under-buttocks portion on a seat side is within a range of more than 5 cc/cm2/sec and at or less than 25 cc/cm2/sec, when the air permeability is measured in compliance with JIS K 6400-4:2004, and
- the air permeability of the surface portion of the under-knees portion is greater than the air permeability of the surface portion of the under-buttocks portion.
A seat pad comprising a surface portion up to 10 mm from a surface,
- wherein an air permeability of the surface portion is measured in compliance with JIS K 6400-4:2004, the air permeability is more than 5 cc/cm2/sec and at or less than 25 cc/cm2/sec,
- the seat pad further comprises a groove configured to partition an air permeability limited portion having the surface portion the air permeability of which is limited to within a range of more than 5 cc/cm2/sec and at or less than 25 cc/cm2/sec, when the air permeability is measured in compliance with JIS K 6400-4:2004, from another portion adjacent to the air permeability limited portion, and
- the surface portion of the air permeability limited portion includes a surface portion of a side face of the groove connected to the air permeability limited portion.
A seat pad manufacturing method for obtaining a seat pad comprising a surface portion up to 10 mm from a surface, the seat pad manufacturing method comprising supplying a molding material into a molding die and performing foam molding,
- wherein an air permeability of the surface portion is measured in compliance with JIS K 6400-4:2004, the air permeability measurement is more than 5 cc/cm2/sec and at or less than 25 cc/cm2/sec,
- an inner surface of the molding die is covered with polystyrene or polyethylene is used,
- the molding die includes a protrusion configured to partition an inner surface of the molding die covered with polystyrene or polyethylene, and
- a side face of the protrusion is covered with polystyrene or polyethylene.
Dependencies are inferred from the claim text.