Abstract: A piezoelectric speaker (10) includes: a piezoelectric film (35); a fixing face (17) for fixing the piezoelectric film (35) to a support; and an interposed layer (40) disposed between the piezoelectric film (35) and the fixing face (17). The interposed layer (40) has a holding degree of 5×108 N/m3 or less.

Abstract: The present invention provides a foam body suitable for producing a cultured meat having a good texture. The foam body of the present invention includes alginic acid and/or an alginate. The foam body has an elastic modulus M, as determined by a test, of 8×104 Pa or less. In the test, the foam body is immersed in 22±3° C. water for 4 hours to prepare a specimen having a post-immersion thickness of 5±1 mm. Stress and strain caused in the specimen are measured by applying a load to the specimen for 5 seconds to compress the specimen in a thickness direction at 0.5 mm/sec. A stress caused in the specimen when the specimen is compressed by 10% of an initial thickness is determined, and a value obtained by dividing the stress by a corresponding strain is determined as the elastic modulus M.

Abstract: The present invention provides a foam body suitable for producing a cultured meat having a good texture. The foam body of the present invention includes alginic acid and/or an alginate. The foam body has an elastic modulus M, as determined by a test, of 8×104 Pa or less. In the test, the foam body is immersed in 22±3° C. water for 4 hours to prepare a specimen having a post-immersion thickness of 5±1 mm. Stress and strain caused in the specimen are measured by applying a load to the specimen for 5 seconds to compress the specimen in a thickness direction at 0.5 mm/sec. A stress caused in the specimen when the specimen is compressed by 10% of an initial thickness is determined, and a value obtained by dividing the stress by a corresponding strain is determined as the elastic modulus M.

Abstract: A piezoelectric speaker-forming laminate (10) includes: a piezoelectric film (35); a pressure-sensitive adhesive face (17); an interposed layer (40) being a porous body layer and/or a resin layer disposed between the piezoelectric film (35) and the pressure-sensitive adhesive face (17); and a release layer (20) joined to the pressure-sensitive adhesive face (17). The pressure-sensitive adhesive face (17) is disposed in such a manner that at least a portion of the piezoelectric film (35) overlaps the pressure-sensitive adhesive face (17) when the piezoelectric film (35) is viewed in plan. The piezoelectric film (35) and the interposed layer (40) are allowed to be fixed to a support (80) as a piezoelectric speaker or a portion of a piezoelectric speaker by sticking the pressure-sensitive adhesive face (17) from which the release layer (20) has been removed to the support (80).

Abstract: A piezoelectric speaker-forming laminate (10) includes: a piezoelectric film (35); a pressure-sensitive adhesive face (17); an interposed layer (40) being a porous body layer and/or a resin layer disposed between the piezoelectric film (35) and the pressure-sensitive adhesive face (17); and a release layer (20) joined to the pressure-sensitive adhesive face (17). The pressure-sensitive adhesive face (17) is disposed in such a manner that at least a portion of the piezoelectric film (35) overlaps the pressure-sensitive adhesive face (17) when the piezoelectric film (35) is viewed in plan. The piezoelectric film (35) and the interposed layer (40) are allowed to be fixed to a support (80) as a piezoelectric speaker or a portion of a piezoelectric speaker by sticking the pressure-sensitive adhesive face (17) from which the release layer (20) has been removed to the support (80).

Abstract: A piezoelectric speaker (10) includes: a piezoelectric film (35); a fixing face (17) for fixing the piezoelectric film (35) to a support; and an interposed layer (40) disposed between the piezoelectric film (35) and the fixing face (17). The interposed layer (40) has a holding degree of 5×108 N/m3 or less.

Abstract: A sound reducing system (500) includes at least one sound reducing speaker for radiating a sound wave for sound reduction. The at least one sound reducing speaker includes a piezoelectric speaker (10). The piezoelectric speaker (10) includes a piezoelectric film (35), a fixing face (17) in contact with a support supporting the piezoelectric speaker (35), and a film holding portion (55) disposed between the piezoelectric film (35) and the fixing face (17). (i) The film holding portion (55) includes a pressure-sensitive adhesive layer and the fixing face (17) is formed of a surface of the pressure-sensitive adhesive layer and/or (ii) the film holding portion (55) includes a porous body layer.

Abstract: Polylactic acid film or sheet having tear strength so as not to break or tear during, for example, production or processing of the film or sheet or winding thereof into a roll, and causing neither melt nor deformation at high temperatures more than 100° C. In the polylactic acid film or sheet, the tear strength is not less than 100 N/mm when the film or sheet is torn at least in a flow direction (MD), a rate of dimensional change due to heating is not more than ±3% in the flow direction (MD) and a transverse direction (TD), and a rate of dimensional change due to loaded heating is not more than ±3% in the flow direction (MD).

Abstract: A film for a pressure-sensitive adhesive tape is a film for a pressure-sensitive adhesive tape, including a non-pressure-sensitive adhesive layer on one surface of a plastic film, where the non-pressure-sensitive adhesive layer includes a mixed layer of a silicone and a (meth)acrylic polymer; and the (meth)acrylic polymer has a calculated Tg of 10° C. or more.

Abstract: The present invention provides a polylactic acid film or sheet having tear strength so as not to break or tear during, for example, production or processing of the film or sheet or winding thereof into a roll, and causing neither melt nor deformation at high temperatures more than 100° C. In the polylactic acid film or sheet according to the present invention, the tear strength is not less than 100 N/mm when the film or sheet is torn at least in a flow direction (MD), a rate of dimensional change due to heating is not more than ±3% in the flow direction (MD) and a transverse direction (TD), and a rate of dimensional change due to loaded heating is not more than ±3% in the flow direction (MD).

Abstract: The present invention provides a separator including a separator substrate composed of a polylactic acid film or sheet having tear strength so as not to break or tear during production or processing of the separator. The separator is a separator including a separator substrate and a removable pressure-sensitive adhesive layer on at least one surface of the separator substrate, wherein the separator substrate is composed of a polylactic acid film or sheet comprising polylactic acid (A) wherein the tear strength of the film or sheet is not less than 100 N/mm when the film or sheet is torn at least in a flow direction (MD), a rate of dimensional change due to heating is not more than ±3% in the flow direction (MD) and a transverse direction (TD), and a rate of dimensional change due to loaded heating is not more than ±3% in the flow direction (MD).

Abstract: The present invention provides a protection film including a substrate composed of a polylactic acid film or sheet having tear strength so as not to break or tear during production or processing of the protection film. The protection film according to the present invention is a protection film including a substrate and a removable pressure-sensitive adhesive layer on at least one surface of the substrate, wherein the substrate is composed of a polylactic acid film or sheet comprising polylactic acid (A) wherein the tear strength is not less than 100 N/mm when the film or sheet is torn at least in a flow direction (MD), a rate of dimensional change due to heating is not more than ±3% in the flow direction (MD) and in a transverse direction (TD), and a rate of dimensional change due to loaded heating is not more than ±3% in the flow direction (MD).

Abstract: Provided is the following film for a pressure-sensitive adhesive tape in which a non-pressure-sensitive adhesive layer is provided on a base material film. In the case where dicing or the like is performed by performing adsorption fixation to a fixing base with a negative pressure, the occurrence of excessive close adhesion due to, for example, the heat generation of the base can be effectively suppressed. In addition, the non-pressure-sensitive adhesive layer is provided on the base material film, and hence blocking in a roll shape is effectively suppressed, the film for a pressure-sensitive adhesive tape does not tear or break upon its unwinding from the roll shape, conformity between the non-pressure-sensitive adhesive layer and the base material film is good, and followability to a deformation such as stretching is good. Also provided is a pressure-sensitive adhesive tape including such film for a pressure-sensitive adhesive tape.

Abstract: A surface protective film that exhibits superior adhesiveness to an adherend and exhibits only small differences in peel strength according to the surface state of an adherend is provided. The surface protective film 10 is provided with an acrylic pressure-sensitive adhesive (PSA) layer 2 on one side of a support 1, and satisfies the following conditions: a thickness reduction ratio (indentation strain E1) when a compressive stress of 0.195 MPa is applied for 10 minutes to a laminate 20 obtained by laminating 24 of the protective films 10 is 7.0% or more, and a ratio (E1/E2) of E1 to a thickness reduction ratio (permanent strain) E2 that remains 10 minutes after the stress is released is 30 or less; and a peel strength S1 on a plain TAC polarizing plate is two times or less a peel strength S2 on a TAG polarizing plate that has been subjected to AG treatment.

Abstract: Disclosed is a polylactic acid-based film or sheet as a resin film or sheet including a polylactic acid (A). The film or sheet has a melt endotherm ?Hc? of 10 J/g or more, where ?Hc? is of a region crystallized upon film formation and specified by following Expression (1): ?Hc?=?Hm??Hc??(1) wherein ?Hc represents an exotherm (J/g) associated with crystallization of the film or sheet in a temperature rise process after film formation; and ?Hm represents an endotherm (J/g) associated with subsequent melting of the film or sheet, each determined by DSC. The film or sheet has a tear strength of 2.5 N/mm or more both in a machine direction (MD) and a transverse direction (TD). The polylactic acid-based resin film or sheet is resistant to melting and deformation even at an elevated temperature higher than 100° C. and is resistant to breaking and tearing during winding into a roll.

Abstract: The present invention provides a methylenebis(fatty acid amide) composition containing as a main component a methylenebis(fatty acid amide) obtained by reacting a fatty acid monoamide with formaldehyde, a content of impurities which consist of the fatty acid monoamide and a fatty acid from which the fatty acid monoamide is constituted is 0 to less than 2 wt %, and a adhesive sheet containing the methylenebis(fatty acid amide) composition.

Abstract: An adhesive tape or sheet with a release liner has; a thermoplastic resin film, a pressure sensitive adhesive layer formed on one side of the thermoplastic resin film, and a release liner positioned on one side of the pressure sensitive adhesive layer, a fatty acid bisamide as well as a fatty acid monoamide and/or fatty acid are contained at least one of the thermoplastic resin film and the pressure sensitive adhesive layer.

Abstract: A surface protective film that exhibits superior adhesiveness to an adherend and exhibits only small differences in peel strength according to the surface state of an adherend is provided. The surface protective film 10 is provided with an acrylic pressure-sensitive adhesive (PSA) layer 2 on one side of a support 1, and satisfies the following conditions: a thickness reduction ratio (indentation strain E1) when a compressive stress of 0.195 MPa is applied for 10 minutes to a laminate 20 obtained by laminating 24 of the protective films 10 is 7.0% or more, and a ratio (E1/E2) of E1 to a thickness reduction ratio (permanent strain) E2 that remains 10 minutes after the stress is released is 30 or less; and a peel strength S1 on a plain TAC polarizing plate is two times or less a peel strength S2 on a TAG polarizing plate that has been subjected to AG treatment.