公开(公告)号：US12275179B2

公开(公告)日：2025-04-15

申请号：US18019619

申请日：2021-08-06

Applicant: JSP CORPORATION

Inventor： Ryuichi Taniguchi ,  Takashi Nishimoto

IPC: B29C48/00 ,  B29C48/08 ,  B29C48/21 ,  B29K25/00 ,  B29K105/00 ,  B29K105/04 ,  B29L7/00 ,  B32B27/06 ,  B32B27/08 ,  B32B27/18 ,  B32B27/32 ,  B65D81/02 ,  B65D81/03 ,  B65D85/48 ,  B65G49/06

Abstract: The multilayer foam sheet includes a polyethylene resin foam layer and a resin layer laminated on at least one of the two surfaces of the foam layer. The resin layer has a multilayer structure formed from a surface layer and an intermediate layer. Both the surface layer and the intermediate layer contain a polyethylene resin and a polymeric antistatic agent. The polymeric antistatic agent is contained in the intermediate layer at a proportion of 30-70 wt % (inclusive). The polymeric antistatic agent is contained in the surface layer at a proportion of at least 5 wt % to less than 30 wt %.

公开(公告)号：US10717840B2

公开(公告)日：2020-07-21

申请号：US15559148

申请日：2016-03-22

Applicant: JSP CORPORATION

Inventor： Takeshi Aoki ,  Takashi Nishimoto

IPC: C08K5/00 ,  C08J9/12 ,  B29C48/08 ,  B29C48/00 ,  B32B5/22 ,  C08J9/08 ,  C08J9/00 ,  B32B17/00 ,  C08J9/14 ,  B32B5/18 ,  B32B27/06 ,  B32B27/32 ,  B29K23/00 ,  B29K471/00 ,  B29K423/00 ,  B29C44/50 ,  B29L31/00

Abstract: Provided is a method for producing a polyethylene-based resin extruded foam sheet by extruding and foaming a foamable molten resin composition formed by kneading a mixture containing a low-density polyethylene, a physical blowing agent, and an antistatic agent, wherein the foam sheet has a thickness in a range of from 0.05 to 0.5 mm, and the antistatic agent is a polymeric antistatic agent having a melting point whose different from the melting point of the low-density polyethylene is in a range of from −10 to +10° C., and having a melt flow rate of 10 g/10 min or more. This method enables a novel polyethylene-based resin extruded foam sheet to be obtained that is of high quality such that formation of a small hole or a through-hole has been reduced or eliminated, and has both excellent strength and a shock-absorbing property despite a very small thickness even in medium- or long-term continuous production, and besides, exhibits a sufficient antistatic property, thus suitable as a glass plate interleaf sheet.

公开(公告)号：US20150218332A1

公开(公告)日：2015-08-06

申请号：US14420832

申请日：2013-08-01

Applicant: JSP CORPORATION

Inventor： Takashi Nishimoto ,  Takeshi Aoki

IPC: C08J9/00 ,  C08J5/18 ,  B32B27/06

CPC classification number: C08J9/0061 ,  B32B27/065 ,  B32B27/22 ,  B32B27/32 ,  B32B2266/025 ,  B32B2307/56 ,  B32B2457/20 ,  B32B2553/00 ,  C08J5/18 ,  C08J9/08 ,  C08J9/141 ,  C08J2201/03 ,  C08J2203/14 ,  C08J2323/06 ,  C08J2423/06 ,  Y10T428/249991

Abstract: An extruded foam sheet having a foam layer constituted of a base resin containing low density polyethylene as a major component thereof, wherein the foam sheet has an apparent density of 45 to 450 kg/m3, an average thickness of 0.03 mm or more and less than 0.3 mm and a dimensional change of −5% to 0% in the extrusion direction when heated at 80° C. for 24 hours and wherein cell walls of the foam layer have an average thickness of 6 to 70 μm. The foam sheet may be used as an interleaf sheet for glass plates.

Abstract translation: 一种具有由含有低密度聚乙烯作为其主要成分的基础树脂构成的发泡层的挤出泡沫片材，其中，泡沫片材的表观密度为45〜450kg / m 3，平均厚度为0.03mm以上且小于 0.3mm，在80℃加热24小时时，挤出方向的尺寸变化为-5％〜0％，泡沫层的泡孔壁的平均厚度为6〜70μm。 泡沫片可以用作玻璃板的中间片。

公开(公告)号：US10814594B2

公开(公告)日：2020-10-27

申请号：US15082547

申请日：2016-03-28

Applicant: JSP CORPORATION

Inventor： Takeshi Aoki ,  Takashi Nishimoto ,  Ryohei Takeuchi

IPC: B32B27/06 ,  B32B27/08 ,  B32B27/32 ,  B32B27/36 ,  B32B5/18 ,  B32B3/30 ,  B32B27/30

Abstract: A laminated foam interleaf sheet for being interposed between glass plates, having a foam layer of a polyethylene-based resin, and an antistatic layer which is laminated on each of both sides of the foam layer and contains a polyethylene-based resin, a polystyrene-based resin and a polymeric antistatic agent, the laminated foam interleaf sheet having a surface roughness Ra of 30 μm or less.

公开(公告)号：US10465057B2

公开(公告)日：2019-11-05

申请号：US15559551

申请日：2016-03-23

Applicant: JSP CORPORATION

Inventor： Takeshi Aoki ,  Takashi Nishimoto

IPC: B29C44/24 ,  C08J9/228 ,  B29C48/18 ,  B32B5/20 ,  B32B27/18 ,  C03B40/033 ,  C08L23/06

Abstract: A method for producing a polyethylene-based resin laminated foam sheet according to the present invention is a method for producing a polyethylene-based resin laminated foam sheet 1 with thickness of 0.05 to 0.5 mm in which an anti-static layer is adhered by lamination on at least one surface of the foam layer, including: a step of performing coextrusion and foaming of a laminate which is obtained by combining and laminating, in a die 10, a melt resin composition 6 for forming a foam layer obtained by kneading a low density polyethylene A and a physical foaming agent and a melt resin composition 9 for forming an anti-static layer obtained by kneading a low density polyethylene B and an anti-static agent, wherein the anti-static agent is a polymeric anti-static agent C which has a melting point to allow a melting point difference in the range of from −10° C. to +10° C. compared to that of the low density polyethylene B and has a melt flow rate of 10 g/10 minutes or more.

公开(公告)号：US11305519B2

公开(公告)日：2022-04-19

申请号：US16887465

申请日：2020-05-29

Applicant: JSP CORPORATION

Inventor： Takashi Nishimoto ,  Ryohei Takeuchi

IPC: B32B27/06 ,  B32B27/32 ,  C08J9/12

Abstract: A laminated foam sheet obtained by a coextrusion lamination method and having a polyethylene foam layer, and an antistatic layer laminated on at least one side of the foam layer. The antistatic layer contains a polyethylene resin, an ionomer resin and a polyalkylene glycol and has such specific morphology that the polyethylene resin forms a continuous phase and the ionomer resin forms small dispersed phases dispersed in the continuous phase.

公开(公告)号：US10569512B2

公开(公告)日：2020-02-25

申请号：US16140637

申请日：2018-09-25

Applicant: JSP CORPORATION

Inventor： Takeshi Aoki ,  Takashi Nishimoto ,  Mikidai Fujita ,  Ryohei Takeuchi

IPC: B32B27/06 ,  B32B27/32 ,  B65D65/40 ,  B65D85/48 ,  B65D57/00 ,  C08L23/04 ,  B32B27/18 ,  B32B27/30 ,  B32B5/20 ,  B32B25/14 ,  C08L23/02 ,  B32B5/18 ,  B65D81/107 ,  C08J9/14

Abstract: A multi-layer foam sheet with an apparent density of 30 to 300 kg/m3 and a thickness of 0.05 to 2 mm, including a foam layer containing a polyethylene-based resin, and an antistatic layer fusion-laminated by coextrusion on each of both sides of the foam layer. The antistatic layer has a basis weight of 1 to 10 g/m2 and contains a polyethylene-based resin, a polystyrene-based resin, a styrenic elastomer, and a polymeric antistatic agent, with the polystyrene-based resin being contained in the antistatic layer in an amount of 15 to 70% by weight.

公开(公告)号：US10124564B2

公开(公告)日：2018-11-13

申请号：US15122559

申请日：2015-02-26

Applicant: JSP CORPORATION

Inventor： Takeshi Aoki ,  Takashi Nishimoto ,  Mikidai Fujita ,  Ryohei Takeuchi

IPC: B32B27/06 ,  B65D81/107 ,  B32B27/32 ,  B65D85/48 ,  B32B5/18 ,  B32B27/18 ,  B65D65/40 ,  B65D57/00 ,  C08L23/04 ,  B32B27/30 ,  B32B5/20 ,  B32B25/14 ,  C08L23/02 ,  C08J9/14

Abstract: A multi-layer foam sheet with an apparent density of 30 to 300 kg/m3 and a thickness of 0.05 to 2 mm, including a foam layer containing a polyethylene-based resin (A), and an antistatic layer fusion-laminated by coextrusion on each of both sides of the foam layer. The antistatic layer has a basis weight of 1 to 10 g/m2 and contains a polyethylene-based resin (B), a polystyrene-based resin, a styrenic elastomer, and a polymeric antistatic agent, with the polystyrene-based resin being contained in the antistatic layer in an amount of 15 to 70% by weight.

公开(公告)号：US09631060B2

公开(公告)日：2017-04-25

申请号：US14420832

申请日：2013-08-01

Applicant: JSP CORPORATION

Inventor： Takashi Nishimoto ,  Takeshi Aoki

IPC: C08J9/00 ,  C08J9/08 ,  C08J9/14 ,  B32B27/06 ,  C08J5/18 ,  B32B27/22 ,  B32B27/32

CPC classification number: C08J9/0061 ,  B32B27/065 ,  B32B27/22 ,  B32B27/32 ,  B32B2266/025 ,  B32B2307/56 ,  B32B2457/20 ,  B32B2553/00 ,  C08J5/18 ,  C08J9/08 ,  C08J9/141 ,  C08J2201/03 ,  C08J2203/14 ,  C08J2323/06 ,  C08J2423/06 ,  Y10T428/249991

Abstract: An extruded foam sheet having a foam layer constituted of a base resin containing low density polyethylene as a major component thereof, wherein the foam sheet has an apparent density of 45 to 450 kg/m3, an average thickness of 0.03 mm or more and less than 0.3 mm and a dimensional change of −5% to 0% in the extrusion direction when heated at 80° C. for 24 hours and wherein cell walls of the foam layer have an average thickness of 6 to 70 μm. The foam sheet may be used as an interleaf sheet for glass plates.