IP Library Granted Patent US 11,117,345
Granted Patent B2
US 11,117,345 · App. 16/078,404 · Granted Sep 14, 2021

Nonwoven fabric for reinforcing foam molded articles

Inventors: Hiroaki Nishimura (Osaka, JP); Takashi Koida (Osaka, JP); Shinichiro Inatomi (Osaka, JP); Mariko Matsui (Osaka, JP)
Assignee: TOYOBO CO., LTD.
B32B5/245B29C39/10B29C48/154B32B5/022B32B5/18B32B5/24B32B27/12B29C44/00B29K2023/083B29K2105/0085B29K2105/04
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Quick Facts
Patent No.
US 11,117,345
App. No.
16/078,404
Granted
Sep 14, 2021
Kind
B2
Abstract

The problem of the present invention is to offer a nonwoven fabric for reinforcing foam molded articles that enables cushion materials to be efficiently foam molded by improving adhesiveness of the reinforcing nonwoven fabric to a mold. The present invention is a nonwoven fabric for reinforcing foam molded articles, having a reinforcing nonwoven layer and at least one resin layer, wherein the reinforcing nonwoven layer and the at least one resin layer are laminated, the reinforcing nonwoven layer has a discontinuous part including a magnetic material, the at least one resin layer has a resin having softening point A of 20° C. or higher and 60° C. or lower, and the nonwoven fabric has an air permeability of 30 cc/cm 2 /sec or more and 300 cc/cm 2 /sec or less.

Claims (44)

1. A nonwoven fabric for reinforcing foam molded articles, comprising a reinforcing nonwoven layer and at least one resin layer, wherein

the reinforcing nonwoven layer and the at least one resin layer are laminated,

the reinforcing nonwoven layer comprises a discontinuous part including a magnetic material,

the magnetic material is on a first side of the reinforcing nonwoven layer,

the at least one resin layer is on a second side of the reinforcing nonwoven layer,

the first side is a back side of the second side,

the at least one resin layer comprises a resin having softening point A in a range of from 20° C. to 60° C., and

the nonwoven fabric has an air permeability in a range of from 30 cc/cm 2 /sec to 300 cc/cm 2 /sec.

2. The nonwoven fabric for reinforcing foam molded articles according to claim 1 , wherein the nonwoven fabric has an adhesiveness to a mold at 60° C. of 1.5 N/ø22 mm or more.

3. The nonwoven fabric for reinforcing foam molded articles according to claim 2 , wherein

the at least one resin layer comprises a plurality of resin layers,

the plurality of resin layers are laterally spaced from each other, and

each of the plurality of resin layers has a linear shape or a random shape.

4. The nonwoven fabric for reinforcing foam molded articles according to claim 2 , wherein the at least one resin layer has a dot shape.

5. The nonwoven fabric for reinforcing foam molded articles according to claim 1 , wherein

the at least one resin layer comprises a plurality of resin layers,

the plurality of resin layers are laterally spaced from each other, and

each of the plurality of resin layers has a linear shape or a random shape.

6. The nonwoven fabric for reinforcing foam molded articles according to claim 1 , wherein the at least one resin layer has a dot shape.

7. A nonwoven fabric for reinforcing foam molded articles, comprising a reinforcing nonwoven layer and at least one resin layer, wherein

the reinforcing nonwoven layer and the at least one resin layer are laminated,

the reinforcing nonwoven layer comprises a discontinuous part including a magnetic material,

the magnetic material is on a first side of the reinforcing nonwoven layer,

the at least one resin layer is on a second side of the reinforcing nonwoven layer,

the first side is a back side of the second side,

the at least one resin layer comprises a resin having a melting point in a range of from 30° C. to 60° C.,

the resin has a melting energy in a range of from 30 J/g to 100 J/g, and

the nonwoven fabric has an air permeability in a range of from 30 cc/cm 2 /sec to 300 cc/cm 2 /sec.

8. The nonwoven fabric for reinforcing foam molded articles according to claim 7 , wherein

the at least one resin layer comprises a plurality of resin layers,

the plurality of resin layers are laterally spaced from each other, and

each of the plurality of resin layers has a linear shape or a random shape.

9. The nonwoven fabric for reinforcing foam molded articles according to claim 7 , wherein the at least one resin layer has a dot shape.

10. A nonwoven fabric for reinforcing foam molded articles, comprising a reinforcing nonwoven layer and at least one resin layer, wherein

the reinforcing nonwoven layer and the at least one resin layer are laminated,

the reinforcing nonwoven layer comprises a discontinuous part including a magnetic material,

the at least one resin layer comprises a resin having softening point A in a range of from 20° C. to 60° C., and

the nonwoven fabric has an air permeability in a range of from 30 cc/cm 2 /sec to 300 cc/cm 2 /sec, an adhesiveness to a mold at 60° C. of 1.5 N/ø22 mm or more, and an adhesiveness to a mold at 30° C. of 1.5 N/ø22 mm or less.

11. A nonwoven fabric for reinforcing foam molded articles, comprising a reinforcing nonwoven layer and at least one resin layer, wherein

the reinforcing nonwoven layer and the at least one resin layer are laminated,

the reinforcing nonwoven layer comprises a discontinuous part including a magnetic material,

the at least one resin layer comprises a resin having a melting point in a range of from 30° C. to 60° C.,

the resin has a melting energy in a range of from 30 J/g to 100 J/g, and

the nonwoven fabric has an air permeability in a range of from 30 cc/cm 2 /sec to 300 cc/cm 2 /sec, an adhesiveness to a mold at 60° C. of 1.5 N/ø22 mm or more, and an adhesiveness to a mold at 30° C. of 1.5 N/ø22 mm or less.

Assignments (3)
CHANGE OF ADDRESS Recorded Aug 7, 2023
From: TOYOBO CO., LTD.
To: TOYOBO CO., LTD.
Reel/Frame 064505/0124 →
DE-MERGER Recorded Aug 7, 2023
From: TOYOBO CO., LTD.
To: TOYOBO MC CORPORATION
Reel/Frame 064505/0803 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 23, 2018
From: NISHIMURA, HIROAKI; KOIDA, TAKASHI; INATOMI, SHINICHIRO; MATSUI, MARIKO
To: TOYOBO CO., LTD.
Reel/Frame 046678/0085 →
Priority Claims (1)
JP JP2016-037037 · Feb 29, 2016 · national
Continuity (1)
Related Publication 20190054715A1 · Feb 21, 2019