Sheet Material

Abstract

A sheet material consisting of a three-dimensional knitted fabric is disclosed. The three-dimensional knitted fabric includes: a surface ground weave having a napped open-lap knit texture; a backside ground weave having an open-lap knit texture; and a connecting yarn connecting the surface ground weave to the backside ground weave.

1 . A sheet material comprising:
 a three-dimensional knitted fabric;   
     wherein the three-dimensional knitted fabric includes:
 a surface ground weave having a napped open-lap knit texture; 
 a backside ground weave having an open-lap knit texture; and 
 a connecting yarn connecting the surface ground weave to the backside ground weave. 
 
   
   
       2 . The sheet material according to  claim 1 , wherein
 the three-dimensional knitted fabric is manufactured by a Double Raschel machine having, with regard to a knitting needle, a 0th position to a 7th position for guide,   the surface ground weave includes:   an outermost knit texture obtained by: overlapping a first ground yarn from the 3rd position to the 2nd position, from the 4th position to the 3rd position, or from the 5th position to the 4th position; subsequently swinging out the first ground yarn to underlap the first ground yarn to the 0th position; subsequently overlapping the first ground yarn from the 0th position to the  1 st position; and subsequently swinging out the first ground yarn to underlap the first ground yarn to the 4th position; and   a second outermost knit texture obtained by: overlapping a second ground yarn from the 0th position to the 1st position; subsequently swinging out the second ground yarn to underlap the second ground yarn to the 2nd position; subsequently overlapping the second ground yarn from the 2nd position to the 1st position; and subsequently underlapping the second ground yarn to the 0th position; and   the connecting yarn has a knit texture obtained by: overlapping the connecting yarn from the 4th position to the 5th position; subsequently swinging out the connecting yarn to underlap the connecting yarn from the 5th position to the 1st position; subsequently overlapping the connecting yarn from the  1 st position to the 0th position; subsequently underlapping the connecting yarn from the 0th position to the 3rd position; subsequently overlapping the connecting yarn from the 3rd position to the 2nd position; subsequently swinging out the connecting yarn to underlap the connecting yarn from the 2nd position to the 6th position; subsequently overlapping the connecting yarn from the 6th position to the 7th position; and subsequently swinging out the connecting yarn to underlap the connecting yarn from the 7th position to the 4th position.   
   
   
       3 . The sheet material according to  claim 1 , wherein
 the connecting yarn is knitted to have a loop with the surface ground weave and the backside ground weave by: overlapping the connecting yarn in an opposite direction to a ground yarn constituting the outermost knit texture of the surface ground weave, underlapping the connecting yarn in the same direction thereto, overlapping the connecting yarn in the same direction to a ground yarn constituting the knit texture at the second side of the surface ground weave from the outer side, and underlapping the connecting yarn in an opposite direction thereto, the connecting yarn being knitted by two needle spaces or more.   
   
   
       4 . The sheet material according to  claim 1 , wherein:
 the connecting yarn is composed of monofilament made of any one of polyamide, polytrimethylene terephthalate, and polyester.