Abstract: A method of producing a stretchable sheet that involves: passing a nonwoven fabric including a plurality of types of fibers through a gap between a pair of gear rolls and that rotate while a plurality of teeth and formed on an outer circumferential surface and of each of the pair of gear rolls and engage with one another; and drawing the nonwoven fabric in a circumferential direction of the gear rolls and by the teeth. A circumferential velocity S of the gear rolls and is within a range of 50 to 300 m/min. A maximum value of distortion per unit time applied to the nonwoven fabric in the gap between the pair of gear rolls and is within a range of 5 to 100 sec?1.

Abstract: A composite sheet which has a low basis weight, can be prevented from breaking during the production of an absorbent article or in use, and is good to the touch. The composite sheet is a sheet formed by bonding a stretch nonwoven fabric to a nonstretch nonwoven fabric with an adhesive. The stretch nonwoven fabric is bonded in a stretched state to the nonstretch sheet. The stretch nonwoven fabric has, on each side, strip-form sparse regions and strip-form dense regions alternately formed. The sparse regions and dense regions on one side are alternately formed in a second direction so that the dense regions on this side do not overlie the dense regions on the other side. The composite sheet has a maximum breaking strength of 20 N/50 mm or higher.

Abstract: A stretchable sheet having a large stretch amount is produced by increasing a drawing amount given to the nonwoven fabric. A method for producing the stretchable sheet from a nonwoven fabric containing a plurality of types of fibers, that is the nonwoven fabric having a longitudinal direction, a width direction and a thickness direction. The method includes a first drawing step of drawing the nonwoven fabric in the longitudinal direction by applying a tension in the longitudinal direction of the nonwoven fabric, and a second drawing step of drawing, in the longitudinal direction, the nonwoven fabric that has been drawn in the first drawing step with a plurality of teeth formed on outer circumferential faces of each of a pair of gear rolls, the drawing being performed by passing the nonwoven fabric through a gap between the gear rolls that rotate while the teeth are being engaged with one another.

Abstract: In a method for forming a thermoplastic polymer sheet, a plurality of the forming blades are configured so as to have projected cross-sectional shapes on the sheet defined by similar curved lines and/or similar flexural lines arranged around a center of similitude and extending in the thickness direction of the sheet from the stationery mold and the movable mold so as to be engaged one with another but not to come in contact one with another. The method includes a step of introducing the sheet between the stationery mold and the movable mold and a step of bring the forming blades of the stationery mold and the movable mold into engagement with one another to stretch the sheet between distal ends of each pair of the adjacent forming blades.

Abstract: A method of producing a stretchable sheet which involves: passing a nonwoven fabric including a plurality of types of fibers through a gap between a pair of gear rolls and that rotate while a plurality of teeth and formed on an outer circumferential surface and of each of the pair of gear rolls and engage with one another; and drawing the nonwoven fabric in a circumferential direction of the gear rolls and by the teeth and. A circumferential velocity S of the gear rolls and is within a range of 50 to 300 m/min. A maximum value of distortion per unit time applied to the nonwoven fabric in the gap between the pair of gear rolls and is within a range of 5 to 100 sec?1.

Abstract: A stretching apparatus for thermoplastic synthetic resin improved so as to ensure that a web can be easily stretched over its entire width. The stretching apparatus 2 for a thermoplastic synthetic resin web 1 comprises a plurality of first stretching members L arranged in a circumferential direction on a peripheral surface of a drum 6 rotating in a machine direction M. The drum 6 is provided around its rotating shaft 8 with rotatable members 7 adapted to rotate in synchronization with the drum 6 in the direction in which the drum 6 rotates. The rotatable members 7 are respectively provided with a plurality of second stretching members U operatively associated with the first stretching members U.

Abstract: A composite sheet that has a low basis weight and can inhibit adhesives from flowing out is provided. The composite sheet 1 according to the present invention is formed by bonding a stretchable nonwoven fabric 2 and a non-stretchable nonwoven fabric 3 to each other with adhesives 4. The stretchable nonwoven fabric 2 in an extended state is bonded to the non-stretchable sheet. The stretchable nonwoven fabric 2 has a plurality of strip-shaped non-dense regions 21 and a plurality of strip-shaped dense regions 22 formed on both its surfaces alternately and alternately in the transverse direction such that the dense regions 22 on one of the surfaces and the dense regions 22 on the other surface are not overlapped with each other. The stretchable nonwoven fabric 2 includes thermoplastic fibers that have been stretched at least partially and elastomer fibers.

Abstract: A stretchable sheet having a large stretch amount is produced by increasing a drawing amount given to the nonwoven fabric. A method for producing the stretchable sheet from a nonwoven fabric containing a plurality of types of fibers, that is the nonwoven fabric having a longitudinal direction, a width direction and a thickness direction. The method includes a first drawing step of drawing the nonwoven fabric in the longitudinal direction by applying a tension in the longitudinal direction of the nonwoven fabric, and a second drawing step of drawing, in the longitudinal direction, the nonwoven fabric that has been drawn in the first drawing step with a plurality of teeth formed on outer circumferential faces of each of a pair of gear rolls, the drawing being performed by passing the nonwoven fabric through a gap between the gear rolls that rotate while the teeth are being engaged with one another.

Abstract: A composite sheet which has a low basis weight, can be prevented from breaking during the production of an absorbent article or in use, and is good to the touch. The composite sheet is a sheet formed by bonding a stretch nonwoven fabric to a nonstretch nonwoven fabric with an adhesive. The stretch nonwoven fabric is bonded in a stretched state to the nonstretch sheet. The stretch nonwoven fabric has, on each side, strip-form sparse regions and strip-form dense regions alternately formed. The sparse regions and dense regions on one side are alternately formed in a second direction so that the dense regions on this side do not overlie the dense regions on the other side. The composite sheet has a maximum breaking strength of 20 N/50 mm or higher.

Abstract: A stretching apparatus for thermoplastic synthetic resin improved so as to ensure that a web can be easily stretched over its entire width. The stretching apparatus 2 for a thermoplastic synthetic resin web 1 comprises a plurality of first stretching members L arranged in a circumferential direction on a peripheral surface of a drum 6 rotating in a machine direction M. The drum 6 is provided around its rotating shaft 8 with rotatable members 7 adapted to rotate in synchronization with the drum 6 in the direction in which the drum 6 rotates. The rotatable members 7 are respectively provided with a plurality of second stretching members U operatively associated with the first stretching members U.

Abstract: A composite sheet that has a low basis weight and can inhibit adhesives from flowing out is provided. The composite sheet 1 according to the present invention is formed by bonding a stretchable nonwoven fabric 2 and a non-stretchable nonwoven fabric 3 to each other with adhesives 4. The stretchable nonwoven fabric 2 in an extended state is bonded to the non-stretchable sheet. The stretchable nonwoven fabric 2 has a plurality of strip-shaped non-dense regions 21 and a plurality of strip-shaped dense regions 22 formed on both its surfaces alternately and alternately in the transverse direction such that the dense regions 22 on one of the surfaces and the dense regions 22 on the other surface are not overlapped with each other. The stretchable nonwoven fabric 2 includes thermoplastic fibers that have been stretched at least partially and elastomer fibers.