WO2013108821A1 - 積層体 - Google Patents
積層体 Download PDFInfo
- Publication number
- WO2013108821A1 WO2013108821A1 PCT/JP2013/050765 JP2013050765W WO2013108821A1 WO 2013108821 A1 WO2013108821 A1 WO 2013108821A1 JP 2013050765 W JP2013050765 W JP 2013050765W WO 2013108821 A1 WO2013108821 A1 WO 2013108821A1
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- WO
- WIPO (PCT)
- Prior art keywords
- layer
- laminate
- side surfaces
- laminate according
- present
- Prior art date
Links
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Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
- B32B3/04—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by at least one layer folded at the edge, e.g. over another layer ; characterised by at least one layer enveloping or enclosing a material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/263—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer having non-uniform thickness
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/02—Physical, chemical or physicochemical properties
- B32B7/022—Mechanical properties
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/23—Sheet including cover or casing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
- Y10T428/24612—Composite web or sheet
Definitions
- the present invention relates to a laminate, and more particularly to a laminate capable of reducing or avoiding deformation under long-term storage.
- a rubber foam material is filled in the space of the automobile body in order to satisfy the requirements such as the quiet performance of the interior space of the automobile.
- a rubber-based foam material generally includes an unfoamed thermosetting foam sheet obtained by blending a diene rubber with a foaming agent, a vulcanizing agent, and the like on the inner wall of the hollow portion of the steel plate for automobile body that constitutes the gap. For example, it is formed by heating and curing and foaming in a drying and heating process such as an electrodeposition coating line. And the said thermosetting foam sheet has an adhesion layer normally, in order to prevent falling from an automobile body steel plate after sticking to the said hollow part.
- thermosetting foam sheet with an adhesive layer is described in, for example, Japanese Patent Publication No. 7-119399, and has a substantially rectangular parallelepiped shape.
- thermosetting foam sheet with an adhesive layer is packed in a stacked state after manufacture and stored in a warehouse or the like until it is actually used, it is loaded from above when left for a long period of time.
- the pressure-sensitive adhesive layer protrudes from the side surface of the thermosetting foam sheet, and adjacent sheets may be integrated with each other, or the sheet may be in close contact with the packaging container, and the handleability may deteriorate.
- Such a problem is not limited to the thermosetting foam sheet with an adhesive layer, and is generally observed in a laminate composed of a layer having a low pressure deformability and a layer having a large pressure deformability.
- the layer with a large pressure deformability may protrude from the side of the laminate due to a large load obtained by adding the weight of the article to the weight of the laminate itself.
- This tendency increases as the load application time becomes longer, and is particularly noticeable when stored in a stacked state in a warehouse or the like.
- the present invention has been made in view of such problems.
- a laminate composed of a layer having a low pressure deformability and a layer having a high pressure deformability is stacked and stored for a long time. Even if it exists, it can suppress thru
- the layer having low pressure deformability is a thermosetting foam sheet and the layer having high pressure deformability is an adhesive layer
- these laminates are stacked. Even when stored for a long time, it is possible to suppress or avoid the sticking layer from protruding from the side surface of the laminate, and to reduce or prevent inconvenience that the laminates are integrated or the laminate is in close contact with the packaging container. Is the purpose.
- the purpose of the present invention is to A first layer, and A hexahedral laminate having at least a second layer having a higher pressure deformability than the first layer, and having a top surface, a bottom surface, and four side surfaces; At least one of the side surfaces is achieved by a laminate formed only from the first layer.
- two of the side surfaces are formed only from the first layer.
- the two side surfaces may be opposed to each other.
- the surface of the second layer constitutes a part of the bottom surface, and at least a part of the periphery of the bottom surface is formed only from the first layer.
- the two peripheries of the bottom surface are formed only from the first layer.
- the two peripheries may be opposed to each other.
- the three peripheries of the bottom surface are formed only from the first layer.
- the entire periphery of the bottom surface is formed only from the first layer.
- the first layer is preferably non-adhesive.
- the second layer can include unvulcanized rubber.
- the unvulcanized rubber may be a diene rubber.
- the second layer may further include an adhesive resin.
- the adhesive resin is at least one selected from the group consisting of rosin resins, aliphatic petroleum resins, aromatic petroleum resins, aliphatic / aromatic copolymer petroleum resins, coumarone resins, phenolic resins, and terpene resins. It is preferable.
- the present invention is a laminate composed of a layer having a small pressure deformability and a layer having a large pressure deformability, and even when it is stacked and stored for a long time, the pressure deformability from the side of the laminate
- the protrusion of a large layer can be suppressed or avoided. Therefore, for example, even when stacked and packaged and left for a long period of time, it is possible to reduce or prevent the stacked bodies from being integrated with each other or the stacked body from being in close contact with the packing container.
- the laminate of the present invention when two of the side surfaces are formed only from the first layer, the protrusion of the second layer having a large pressure deformability from the side surface can be reduced or prevented.
- the laminate when the two side surfaces face each other, the laminate can be easily manufactured by coextrusion molding.
- the protrusion of the second layer from the side surface can be further reduced or prevented.
- the protrusion of the second layer from the side surfaces can be completely reduced or prevented.
- the surface of the second layer constitutes a part of the bottom surface
- the protrusion of the second layer through the bottom surface can be further reduced or prevented.
- the laminate can be easily manufactured by coextrusion molding.
- the protrusion of the second layer through the bottom surface can be further reduced or prevented.
- the protrusion of the second layer through the bottom surface can be completely reduced or prevented.
- the first layer may be thermosetting, and may include, for example, an unvulcanized rubber such as a diene rubber.
- the first layer may further include a foaming agent.
- the first layer can be in the form of a thermosetting foam sheet.
- the second layer contains unvulcanized rubber such as diene rubber
- the second layer can be thermosetting.
- the second layer is at least one selected from the group consisting of rosin resin, aliphatic petroleum resin, aromatic petroleum resin, aliphatic / aromatic copolymer petroleum resin, coumarone resin, phenolic resin, and terpene resin.
- the adhesive resin is further included, the second layer becomes adhesive, and the laminate of the present invention can be applied to, for example, a steel plate.
- the first layer having low pressure deformability is a thermosetting foam sheet and the second layer having high pressure deformability is an adhesive layer
- these laminates are stacked and stored for a long time. Even in such a case, it is possible to suppress or avoid the sticking layer from protruding from the side surface of the laminated body, and to reduce or prevent the laminated bodies from being integrated with each other or the laminated body being in close contact with the packaging container. . In addition, it is possible to improve workability without impairing adhesiveness to an automobile body, adhesiveness, and filling of voids, which is the original purpose of the thermosetting foam sheet.
- the present invention is a hexahedral laminate having at least a first layer and a second layer having a higher pressure deformability than the first layer, and having a top surface, a bottom surface, and four side surfaces, At least one of the side surfaces is composed of only the first layer. Since the laminated body of the present invention has the side surface formed only from the first layer, the protrusion of the second layer having high pressure deformability from the side surface is suppressed or avoided.
- FIG. 1 shows a laminate according to an embodiment of the present invention.
- the laminate of the present invention is a rectangular parallelepiped having an upper surface 1, a bottom surface 2, and four side surfaces, and two side surfaces 3a and 3b are shown in FIG. 1 for convenience. Note that the remaining two side surfaces (not shown) exist above and below the page.
- the first layer A is composed of a first layer A and a second layer B having a higher pressure deformability than the first layer A.
- Pressure deformability in the present invention means a property that deforms when a pressure is applied, and is a plate-like first having the same initial thickness, the same initial width, and the same initial length.
- the second layer B is more in the width or length direction than the first layer A. This means that the degree of deformation is large.
- the ratio of the extension distance in the width or length direction of the first layer A / the extension distance in the width or length direction of the second layer B is 1 / 1.1-1 / 10, 1 / 1.2. ⁇ 1 / 5, 1 / 1.5 to 1 /.
- the first layer A preferably has no pressure deformability.
- the second layer B has a larger tensile strain (elongation) than the first layer A.
- the tensile strain can be measured according to, for example, JIS K7113. Therefore, it is preferable that the elongation measured by JIS K7113 is larger in the second layer B than in the first layer A.
- the ratio of the tensile strain of the first layer A / the tensile strain of the second layer B is 1 / 1.1-1 / 10, 1 / 1.2-1 / 5, 1 / 1.5-1 / 1 3 can be used.
- the first layer A is preferably free from tensile strain.
- the thickness of the first layer A is not particularly limited, but may be, for example, in the range of 1 to 20 mm, more preferably in the range of 2 mm to 10 mm, and still more preferably in the range of 3 mm to 5 mm.
- the thickness of the second layer B is not particularly limited, but can be, for example, in the range of 0.1 to 10 mm, more preferably in the range of 0.5 mm to 5 mm, and in the range of 1 mm to 3 mm. Is even more preferred.
- the material constituting the first layer A is not particularly limited, and various inorganic or organic materials can be used, but organic materials are preferable from the viewpoint of ease of manufacture and handleability, and various resins And rubber is more preferred.
- the resin any of a thermoplastic resin and a thermosetting resin can be used.
- the thermoplastic resin include polyolefin, polystyrene, polyvinyl acetate, polyvinyl alcohol, polyvinyl acetal, polyacrylate, polyacrylamide, polyacrylonitrile, polyether, polyvinyl chloride, polyvinylidene chloride, polyester, polyamide, polyimide, polysulfone, and the like.
- examples of the thermosetting resin include polyurethane, phenol resin, epoxy resin, urea resin, melamine resin, and the like, but rubber is preferable for filling the space in the automobile body.
- vulcanized rubber either vulcanized rubber or unvulcanized rubber can be used, and vulcanized rubber is preferably used from the viewpoint of pressure deformation, but unvulcanized rubber is preferable from the viewpoint of handleability.
- An unvulcanized rubber is more preferable.
- the diene-based unvulcanized rubber for example, at least one selected from natural rubber, isoprene rubber, butadiene rubber, styrene butadiene rubber, and modified rubber obtained by terminally modifying these rubbers can be used. Styrene butadiene rubber is preferred from the viewpoint of processability and foamability.
- Such diene-based unvulcanized rubber can be used alone or as a blend. When unvulcanized rubber is used as the main constituent material of the first layer A, the first layer A becomes thermosetting.
- the amount of unvulcanized rubber used is, for example, 20 to 90, based on the total weight of the composition constituting the first layer A. % By weight, preferably 30 to 80% by weight.
- the composition constituting the first layer A preferably contains a vulcanizing agent.
- the vulcanizing agent can be appropriately selected from known ones and used, and examples thereof include sulfur or sulfur-based vulcanizing agents such as thiurams and dithiocarbamates.
- thiurams include tetramethylthiuram disulfide, tetraethylthiuram disulfide, tetrabutylthiuram disulfide, tetramethylthiuram monosulfide, N, N'-dimethyl-N, N'-diphenylthiuram disulfide, dipentamethylenethiuram disulfide, dipentamethylene And thiuram pentasulfide, mixed alkylthiuram disulfide, and the like.
- dithiocarbamates examples include zinc dimethylthiocarbamate, zinc diethylthiocarbamate, zinc N-ethyl-N-phenyldithiocarbamate, and zinc dibenzyldithiocarbamate. Can be mentioned. These can be used individually or in mixture of 2 or more types. In particular, in the present invention, it is preferable to use tetramethylthiuram monosulfide in terms of foaming performance.
- the amount of the vulcanizing agent used can be, for example, 0.5 to 5% by weight, preferably 1 to 3% by weight, based on the total weight of the composition constituting the first layer A.
- a vulcanization accelerator can be used in combination with the vulcanizing agent as long as the effect of the present invention is not hindered.
- the vulcanization accelerator include guanidines, thiazoles, sulfenamides, dithiocarbamic acids, xanthogens, aldehyde ammonias, aldehyde amines, thioureas and the like. Note that the above thiurams, dithiocarbamates and the like may be used as vulcanization accelerators. These can be used individually or in mixture of 2 or more types.
- the first layer A may further contain a foaming agent. Therefore, when the first layer A includes a foaming agent, when the main constituent material of the first layer A is a thermoplastic resin, the first layer A becomes a thermoplastic foam sheet, and the main layer of the first layer A When the constituent material is a thermosetting resin or unvulcanized rubber, the first layer A is a thermosetting foam sheet.
- the blowing agent can be appropriately selected from known ones and used, for example, azodicarbonamide (ADCA), azobisisobutyronitrile, azodicarbonbarium, N, N′-dinitrosopentamethylenetetramine, N, N′-dimethyl-N, N′-dinitrosotephthalamide, 4,4′-oxysbis (benzenesulfonylhydrazide), hydrazodicarbonamide, paratoluenesulfonylhydrazide, diphenylsulfone-3,3′-disulfonylhydrazide, allylbis (Sulfonyl hydrazide), p-toluylene sulfonyl semicarbazide, 4,4′-oxybis (benzenesulfonyl semicarbazide), sodium hydrogen carbonate, ammonium carbonate, anhydrous sodium nitrate and the like.
- ADCA azodicarbonamide
- the amount of the foaming agent used can be determined as appropriate according to the physical properties of the desired foamed material such as the expansion ratio, and is, for example, 0.5 to 20% by weight based on the total weight of the composition constituting the first layer A. , Preferably 1 to 10% by weight, more preferably 2 to 5% by weight.
- urea may be used as a foaming aid.
- composition constituting the first layer A various conventionally known oils, anti-aging agents, colorants, inorganic fillers, and other additives may be used in combination as long as the effects of the present invention are not hindered. .
- an adhesive may be mix
- the first layer A is preferably non-tacky, and therefore the composition constituting the first layer A preferably does not contain an adhesive.
- the material constituting the second layer B is not particularly limited, and the same materials as those described for the first layer A can be used.
- the second layer B has a higher pressure deformability than the first layer A.
- the second layer B can also be composed of the same unvulcanized rubber-based thermosetting composition. Thereby, the 1st layer A and the 2nd layer B can be unified more firmly.
- a diene-based unvulcanized rubber is preferable as the unvulcanized rubber used for the second layer B.
- the diene-based unvulcanized rubber for example, at least one selected from natural rubber, isoprene rubber, butadiene rubber, styrene butadiene rubber, and modified rubber obtained by terminally modifying these rubbers can be used. Styrene butadiene rubber is preferred from the viewpoint of processability and foamability.
- Such diene-based unvulcanized rubber can be used alone or as a blend.
- the composition contains the vulcanizing agent, vulcanization accelerator, etc. described above. Can be included.
- the second layer B can further contain an adhesive resin in order to exhibit adhesiveness.
- the adhesive resin can be appropriately selected from known ones and used, for example, rosin resin, aliphatic petroleum resin, aromatic petroleum resin, aliphatic / aromatic copolymer petroleum resin, coumarone resin, phenolic resin And at least one selected from the group consisting of terpene resins can be used. These can be used alone or in admixture of two or more.
- the adhesive resin preferably has a softening point in the range of 60 ° C to 150 ° C.
- the amount of the adhesive resin used can be appropriately determined according to the target degree of adhesiveness, and is, for example, 1 to 40% by weight, preferably 5 to 5% based on the total weight of the composition constituting the second layer B. It can be 30% by weight, more preferably 1 to 20% by weight.
- composition constituting the second layer B various conventionally known oils, anti-aging agents, colorants, inorganic fillers, and other additives may be used in combination as long as the effects of the present invention are not hindered. .
- the composition constituting the first layer A and the second layer B is produced by mixing and kneading the above components by a conventionally known method such as a kneader, an internal mixer, or a two-roll. be able to.
- the two side surfaces 3a and 3b of the laminate of the present invention are formed only from the first layer A.
- the contact surface between the first layer A and the second layer does not intersect with the side surfaces 3a and 3b, or the side surfaces 3a and 3b are constituted by the first layer A, and the second surfaces are formed on the side surfaces 3a and 3b.
- Layer B is not exposed. Therefore, the second layer B does not protrude from the side surfaces 3a and 3b even when a large load is applied, for example, by stacking the laminate of the present invention shown in FIG.
- two opposing peripheries 2 a and 2 b of the bottom surface 2 are formed only from the first layer A.
- the contact surface between the first layer A and the second layer intersects only the bottom surface 2. That is, although the surface of the second layer B forms a part of the bottom surface 2, the periphery of the bottom surface 2 is blocked by the first layer A, and the surface of the second layer B is the edge of the side surfaces 3a and 3b.
- the second layer B does not protrude from the bottom surface 2 beyond the edges of the side surfaces 3a and 3b even when a large load is applied, for example, by stacking the laminate of the present invention shown in FIG. Absent.
- the widths of the periphery 2a and 2b may be the same or different.
- the width of the periphery 2a, 2b is not particularly limited, but may be, for example, in the range of 1 to 20 mm, more preferably in the range of 3 mm to 15 mm, and still more in the range of 5 mm to 10 mm. preferable.
- the contact surface between the first layer A and the second layer B is continuous, and the cross section thereof can be, for example, a part of an arc.
- the contact surface with the second layer B may have a bending point (a point that cannot be differentiated, such as a rectangular vertex).
- FIG. 2 shows a laminate according to another embodiment of the present invention, and the example shown in FIG. 2 is different from that shown in FIG. 1 except that the contact surface between the first layer A and the second layer B has a bending point.
- the contact surface between the first layer A and the second layer B is composed of a plurality of planes, and the cross section can be a part of a trapezoid, for example.
- the second layer B does not protrude from the side surfaces 3 a and 3 b, and the side surfaces 3 a and 3 b from the bottom surface 2.
- the second layer B does not protrude beyond the edge.
- the cross-sectional shape of the contact surface between the first layer A and the second layer B is arbitrary, and may be a shape other than that shown in FIG. 1 or FIG. For example, it may be a part of a triangle, a rectangle, a square, or an ellipse, and fine irregularities are formed on the contact surface in order to increase the bonding force between the first layer A and the second layer B. May be.
- the laminate of the present invention shown in FIGS. 1 and 2 is, for example, a co-extrusion molding using a multilayer die having two nozzles, using the composition constituting the first layer A and the second layer B. It can be manufactured by carrying out a known molding process such as calender roll forming in which two sheets are sandwiched and integrated, and press forming in which two sheets are compressed and integrated. From the viewpoint of productivity, coextrusion molding is preferred.
- the 1st layer A and the 2nd layer B consist of thermosetting compositions, although it changes with compositions of a composition, in order to suppress progress of hardening, decomposition
- the laminated body of the present invention shown in FIG. 1 and FIG. 2 is composed of two layers of a first layer A and a second layer B, but if necessary, on the first layer or the second layer B. There may be other layers between one layer and the second layer.
- the other layer can be formed by coextrusion using a multilayer die with three nozzles.
- the laminate of the present invention includes a mode in which two adjacent side surfaces are formed only from the first layer, in addition to a mode in which the two opposing side surfaces are formed only from the first layer. Thereby, it can arrange
- the laminated body of this aspect can be manufactured, for example, by press molding in which two sheets are compressed and integrated.
- the laminate of the present invention includes an embodiment in which three of the side surfaces are formed only from the first layer. Thereby, the protrusion of the second layer from the side surface can be further reduced.
- the laminated body of this aspect is formed by, for example, press molding in which two sheets are compressed and integrated, or one of the side faces in the direction perpendicular to the paper surface of the laminated body shown in FIG. It can be manufactured by coating with the same composition as the composition to be made.
- the laminate of the present invention includes an embodiment in which all of the four side surfaces are formed only from the first layer. Thereby, the protrusion of the second layer from the side surface can be completely suppressed.
- the first layer is formed by, for example, press molding in which two sheets are compressed and integrated, or two side surfaces of the laminated body shown in FIG. 1 or FIG. It can be produced by coating with the same composition as the composition.
- the present invention can be applied to any laminate including a layer having a low pressure deformability and a layer having a high pressure deformability, and reduces inconvenience due to the protrusion of the layer having a high pressure deformability due to long-term storage. Can be prevented.
- the first layer having low pressure deformability is a thermosetting foam sheet and the second layer having high pressure deformability is an adhesive layer
- the thermosetting foam sheet with an adhesive layer is appropriately heated after being attached to the inner wall of a hollow portion such as the inside of a void of an automobile body steel plate, for example.
- foaming and curing are performed to form a foam material having a sound absorbing effect.
- the quietness of the interior space of a car can be improved. Therefore, the thermosetting foam sheet with the pressure-sensitive adhesive layer which is one embodiment of the present invention can be used as a void filler for an automobile body.
- thermosetting foam composition A The components shown in Table 1 below were mixed and kneaded with an open kneader to prepare a thermosetting foam composition A and an adhesive material B.
- the numerical value in Table 1 represents weight%.
- Styrene-butadiene rubber Nipol 1502 manufactured by Nippon Zeon Co., Ltd.
- Naphthenic oil Idemitsu Kosan Co., Ltd.
- Example 1 An adhesive layer that is a strip-like sheet having a width of 30 mm, a thickness of 3 mm, and a length of 200 mm by coextrusion molding using a multilayer die using the thermosetting foam composition A and the adhesive material B, and having the cross-sectional shape of FIG. An attached thermosetting foam sheet was produced.
- Example 2 Similar to Example 1, a belt-like sheet having a width of 30 mm, a thickness of 3 mm, and a length of 200 mm was obtained by coextrusion molding using a different multilayer die using the thermosetting foam composition A and the adhesive material B. A thermosetting foam sheet with an adhesive layer having a cross-sectional shape of 4 was produced.
- thermosetting foam composition A As in Example 1, by using the thermosetting foam composition A and the adhesive material B, it is a belt-like sheet having a width of 30 mm, a thickness of 3 mm, and a length of 200 mm by coextrusion using a different multilayer die. A thermosetting foam sheet with an adhesive layer having the cross-sectional shape of FIG. 5 was produced.
- thermosetting foamed sheets with the adhesive layer of Example 1, Example 2 and Comparative Example 1 was stacked 10 times, adjacent to each other with a 10 mm gap, and stored in a packaging container at room temperature for 6 months.
- Example 1 and Example 2 no sticking out of the adhesive material B was seen from the cross section, and the appearance did not change and was good.
- the comparative example 3 the location where the adhesive material B protruded from the cross section was seen, and it was closely_contact
- Example 1 and Example 2 by forming the side surface of the laminate with only the thermosetting foam composition A, it is possible to prevent the adhesive material B from protruding from the side surface. did it. Therefore, the laminates of Example 1 and Example 2 could be stored for a long time in a good state while maintaining the shape. On the other hand, since the adhesive material B protruded from the side surface over time, the laminate of Comparative Example 1 was unsuitable for long-term storage.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
- Sealing Material Composition (AREA)
- Adhesive Tapes (AREA)
Abstract
Description
第1の層、及び、
第1の層よりも高い加圧変形性を有する第2の層
を少なくとも備え、上面、底面、4つの側面を有する六面体状の積層体であって、
前記側面の少なくとも1つが前記第1の層のみから形成される積層体
によって達成される。
前記底面の周辺の少なくとも一部が第1の層のみから形成される場合は、第2の層の前記底面を経由したはみ出しを低減乃至防止することができる。
ナフテン系オイル:出光興産(株) ダイアナプロセスオイルNP24
熱硬化性発泡組成物A及び粘着材Bを使用して、多層ダイを用いる共押出成形により、幅30mm、厚さ3mm、長さ200mmの帯状シートであり、図3の断面形状を有する粘着層付熱硬化性発泡シートを作製した。
実施例1と同様に、熱硬化性発泡組成物A及び粘着材Bを使用して、異なる多層ダイを用いる共押出成形により、幅30mm、厚さ3mm、長さ200mmの帯状シートであり、図4の断面形状を有する粘着層付熱硬化性発泡シートを作製した。
実施例1と同様に、熱硬化性発泡組成物A及び粘着材Bを使用して、更に異なる多層ダイを用いる共押出成形により、幅30mm、厚さ3mm、長さ200mmの帯状シートであり、図5の断面形状を有する粘着層付熱硬化性発泡シートを作製した。
実施例1、実施例2、及び、比較例1の粘着層付熱硬化性発泡シートを、それぞれ10枚重ね、10mm間隙を設け並列に隣接し梱包容器内に6ヶ月間室温で保管した。6ヵ月後各積層体を観察したところ、実施例1及び実施例2では、断面から粘着材Bのはみ出しは見られず、外観に変化はなく良好であった。一方、比較例3では、断面から粘着材Bがはみ出した箇所が見られ、隣接するシートと密着していた。
Claims (15)
- 第1の層、及び、
第1の層よりも高い加圧変形性を有する第2の層
を少なくとも備え、上面、底面、4つの側面を有する六面体状の積層体であって、
前記側面の少なくとも1つが前記第1の層のみから形成されることを特徴とする積層体。 - 前記側面の2つが前記第1の層のみから形成される、請求項1記載の積層体。
- 前記2つの側面が対向する、請求項2記載の積層体。
- 前記側面の3つが前記第1の層のみから形成される、請求項1記載の積層体。
- 前記側面の全てが前記第1の層のみから形成される、請求項1記載の積層体。
- 第2の層の表面が前記底面の一部を構成しており、
前記底面の周辺の少なくとも一部が前記第1の層のみから形成される、請求項1乃至5のいずれかに記載の積層体。 - 前記底面の2つの周辺が前記第1の層のみから形成される、請求項1乃至5のいずれかに記載の積層体。
- 前記2つの周辺が対向する、請求項7記載の積層体。
- 前記底面の3つの周辺が前記第1の層のみから形成される、請求項1乃至5のいずれかに記載の積層体。
- 前記底面の周辺の全てが前記第1の層のみから形成される、請求項1乃至5のいずれかに記載の積層体。
- 前記第1の層が非粘着性である、請求項1乃至10のいずれかに記載の積層体。
- 前記第2の層が未加硫ゴムを含む、請求項1乃至11のいずれかに記載の積層体。
- 前記未加硫ゴムがジエン系ゴムである、請求項12記載の積層体。
- 前記第2の層が粘着性樹脂を更に含む、請求項12又は13記載の積層体。
- 前記粘着性樹脂がロジン樹脂、脂肪族石油樹脂、芳香族石油樹脂、脂肪族/芳香族共重合系石油樹脂、クマロン樹脂、フェノール系樹脂及びテルペン樹脂からなる群より選択される少なくとも1種である、請求項14記載の積層体。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP13738923.5A EP2805816A4 (en) | 2012-01-17 | 2013-01-17 | LAMINATE |
US14/372,683 US20140377497A1 (en) | 2012-01-17 | 2013-01-17 | Layered product |
CN201380005726.8A CN104053544B (zh) | 2012-01-17 | 2013-01-17 | 层叠体 |
KR1020147020776A KR20140114395A (ko) | 2012-01-17 | 2013-01-17 | 적층체 |
BR112014017337-0A BR112014017337B1 (pt) | 2012-01-17 | 2013-01-17 | produto em camadas |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2012006890 | 2012-01-17 | ||
JP2012-006890 | 2012-01-17 |
Publications (1)
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WO2013108821A1 true WO2013108821A1 (ja) | 2013-07-25 |
Family
ID=48799245
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PCT/JP2013/050765 WO2013108821A1 (ja) | 2012-01-17 | 2013-01-17 | 積層体 |
Country Status (7)
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US (1) | US20140377497A1 (ja) |
EP (1) | EP2805816A4 (ja) |
JP (1) | JPWO2013108821A1 (ja) |
KR (1) | KR20140114395A (ja) |
CN (1) | CN104053544B (ja) |
BR (1) | BR112014017337B1 (ja) |
WO (1) | WO2013108821A1 (ja) |
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- 2013-01-17 KR KR1020147020776A patent/KR20140114395A/ko not_active Application Discontinuation
- 2013-01-17 WO PCT/JP2013/050765 patent/WO2013108821A1/ja active Application Filing
- 2013-01-17 CN CN201380005726.8A patent/CN104053544B/zh active Active
- 2013-01-17 US US14/372,683 patent/US20140377497A1/en not_active Abandoned
- 2013-01-17 BR BR112014017337-0A patent/BR112014017337B1/pt active IP Right Grant
- 2013-01-17 JP JP2013554329A patent/JPWO2013108821A1/ja active Pending
- 2013-01-17 EP EP13738923.5A patent/EP2805816A4/en not_active Withdrawn
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CN104053544A (zh) | 2014-09-17 |
KR20140114395A (ko) | 2014-09-26 |
BR112014017337A2 (pt) | 2017-06-13 |
JPWO2013108821A1 (ja) | 2015-05-11 |
EP2805816A4 (en) | 2015-08-12 |
BR112014017337A8 (pt) | 2017-07-04 |
EP2805816A1 (en) | 2014-11-26 |
BR112014017337B1 (pt) | 2021-01-05 |
US20140377497A1 (en) | 2014-12-25 |
CN104053544B (zh) | 2018-03-23 |
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