JP2022070225A - Laminated film and molding transfer foil using the same - Google Patents

Abstract

To provide: a laminated film which has excellent quality, productivity, dimensional stability in processing, surface design of product members, and moldability; and a molding transfer foil using the laminated film.SOLUTION: A laminated film comprises a B layer on at least one surface of an A layer, the A layer having a cyclic olefin resin as the main component and including a thermoplastic elastomer, and the B layer including polypropylene resin and polyethylene resin in a combined amount of more than 50 mass% and 100 mass% or less, the B layer being positioned at the outermost surface on at least one side.SELECTED DRAWING: None

Description

The present invention relates to a laminated film and a molded transfer foil using the same.

In recent years, due to the improvement of environmental awareness, there is an increasing demand for decoration means as an alternative to solvent-less painting and plating in the fields of building materials, automobile parts, mobile phones, electric appliances, etc., and molding decoration using a film is increasing. The introduction of the method is in progress. As a method of decorating a three-dimensional shape member using a film, for example, a method of laminating a design layer or the like on a thermoplastic resin film and transferring the design layer or the like to the member at the same time as molding is known.

In such a decoration method, a film containing a polyolefin resin as a main component is used, but when applied to a decoration application, there is a problem that the surface appearance is lacking in quality and deep drawability.

As a method for improving the above problems, Patent Document 1 states that by applying a film containing a cyclic olefin resin as a main component, excellent surface appearance, processability, and deep drawability can be realized. The method is disclosed. Further, Patent Document 2 discloses a method in which a polyurethane resin is laminated on a polypropylene resin to achieve both processability and moldability.

International Publication No. 2016/006448 Japanese Unexamined Patent Publication No. 2014-198414

However, in the technique described in Patent Document 1 described above, in the processing process (particularly the process of cutting the film and the process of winding while slitting the end portion), the end portion of the film is defective, broken, broken, etc. due to lack of toughness. It may occur, and there are problems in terms of quality and productivity. Further, in the molding process, an increase in the surface glossiness of the film (decrease in the surface roughness of the film) may occur due to a decrease in the storage elastic modulus, and the member after molding and decoration (hereinafter referred to as a product member) may be used. ) There is a problem with the design of the surface. On the other hand, in the technique described in Patent Document 2, there is a problem that the dimensional change of the film occurs and the moldability is also inferior, particularly in the processing steps of film coating, laminating, printing, vapor deposition and the like.

In view of the background of the prior art, the present invention is a laminated film having excellent quality, productivity, dimensional stability in a processing process, designability of the surface of a product member, and moldability, and a molded transfer foil using the laminated film. The challenge is to provide.

As a result of diligent studies to solve the above problems, the present invention has been found to be solved by the following, and the present invention has been reached. That is, in the laminated film of the present invention, the main component is the cyclic olefin resin, the layer containing the thermoplastic elastomer is the A layer, and the polypropylene resin and the polyethylene resin are more than 50% by mass and 100% by mass or less in total. When the containing layer is the B layer, the B layer is provided on at least one surface of the A layer, and the B layer is located on the outermost surface of at least one of the layers.

INDUSTRIAL APPLICABILITY According to the present invention, it is possible to provide a laminated film having excellent quality, productivity, dimensional stability in a processing process, designability of the surface of a product member, and moldability, and a molded transfer foil using the laminated film.

It is a figure which shows the period in the longitudinal direction and the amplitude in the width direction in the slit property evaluation of a laminated film (top view when viewed from the direction perpendicular to a film surface).

In the laminated film of the present invention, the main component is a cyclic olefin resin, the layer containing the thermoplastic elastomer is the A layer, and the polypropylene resin and the polyethylene resin are contained in a total amount of more than 50% by mass and 100% by mass or less. Is a laminated film having the B layer on at least one surface of the A layer, and the B layer is located on the outermost surface of at least one of the B layers. With such a mode, the laminated film is excellent in quality, productivity, dimensional stability in the processing process, designability of the surface of the product member, and moldability. Hereinafter, the laminated film of the present invention will be specifically described.

(Layer A)
From the viewpoint of improving toughness, quality, and dimensional stability in the processing process, the laminated film of the present invention may have a layer (A layer) containing a thermoplastic elastomer as the main component of the cyclic olefin resin. is important.

The cyclic olefin resin can realize processability and moldability, but has a problem in that it is highly brittle and the film itself becomes brittle. On the other hand, thermoplastic elastomers have excellent toughness. Therefore, by using a cyclic olefin resin as a main component and containing a thermoplastic elastomer, brittleness can be improved while maintaining processability and moldability. That is, by providing the A layer in such an embodiment, it is possible to improve the dimensional stability and moldability in the processing process while suppressing the decrease in the toughness of the laminated film.

Here, the layer whose main component is a cyclic olefin resin means that the cyclic olefin resin is contained in an amount of more than 50% by mass and 99% by mass or less when all the components constituting the layer are 100% by mass. When a plurality of types of cyclic olefin resins are contained in the layer, if the total of all the cyclic olefin resins is more than 50% by mass and 99% by mass or less, the above requirements are satisfied.

The cyclic olefin resin is an olefin resin having an alicyclic structure in the main chain, and contains 100 mol% or less of the total number of cyclic olefin units in 100 mol% of all the constituent units of the resin. To say. Here, the cyclic olefin refers to a hydrocarbon compound having a cyclic structure formed by carbon atoms and having a carbon-carbon double bond in the ring structure. Further, the cyclic olefin unit means a constituent unit derived from the cyclic olefin.

The monomer for obtaining the cyclic olefin resin is not particularly limited as long as the effect of the present invention is not impaired, but from the viewpoint of productivity and surface appearance when the laminated film is used for decoration, bicyclo [2,2,1] ] Hept-2-ene (hereinafter referred to as norbornene), cyclopentadiene, 1,3-cyclohexadiene, and derivatives thereof are preferably used, and norbornene and its derivatives are more preferably used.

Further, as long as the above requirements are satisfied, the cyclic olefin resin includes a resin containing only one type of cyclic olefin unit, a resin containing a plurality of types of cyclic olefin units, one type or a plurality of types of cyclic olefin units, and one type or a plurality of types. It may be any resin containing a chain olefin unit. Further, any of the above resins may contain a constituent unit other than the olefin unit. Here, the chain olefin is a hydrocarbon compound having a carbon-carbon double bond and does not have a cyclic structure formed by carbon atoms. Further, the chain olefin unit means a structural unit derived from the chain olefin. Examples of chain olefins include ethylene and propylene. Further, examples of the chain olefin unit include ethylene unit and propylene unit. The combination of the cyclic olefin unit and the chain olefin unit is not particularly limited as long as the effect of the present invention is not impaired.

The cyclic olefin resin in the layer A may be only one type or a plurality of types as long as the effect of the present invention is not impaired. When there are a plurality of types of cyclic olefin resins in the layer, the content of the cyclic olefin resins shall be calculated by adding up all the cyclic olefin resins.

The cyclic olefin resin of the A layer includes polynorbornene, polycyclopentadiene, polycyclohexadiene, and norbornene and ethylene from the viewpoints of productivity, moldability, and surface appearance when a laminated film is used for decoration. It is preferable to use at least one of the polymers, and it is more preferable to use at least one of polynorbornene and a copolymer of norbornene and ethylene.

Subsequently, a method for obtaining a cyclic olefin resin will be described with reference to an example. As a method for producing a resin obtained by polymerizing only a cyclic olefin monomer, a method such as addition polymerization of a cyclic olefin monomer or ring-opening polymerization can be used. More specific examples include a method in which norbornene is subjected to ring-opening metathesis polymerization and then hydrogenated, and a method in which norbornene is addition-polymerized to obtain polynorbornene. Further, polycyclopentadiene and polycyclohexadiene can be obtained by a method in which cyclopentadiene and cyclohexadiene are addition-polymerized and then hydrogenated.

As a method for producing a resin obtained by copolymerizing a cyclic olefin monomer and a chain olefin monomer, a method such as addition polymerization of the cyclic olefin monomer and the chain olefin monomer can be used. For example, a copolymer of norbornene and ethylene can be obtained by a method of addition polymerization of norbornene and ethylene.

The content of the cyclic olefin resin in the A layer is not particularly limited as long as the main component of the A layer is the cyclic olefin resin, as long as the effect of the present invention is not impaired. From the viewpoint of moldability, it is more preferable that the content is 60% by mass or more and 90% by mass or less when all the components constituting the layer A are 100% by mass.

The thermoplastic elastomer in the A layer is not particularly limited as long as the effect of the present invention is not impaired, but from the viewpoint of improving the adhesion and toughness between the A layer and the B layer when the A layer and the B layer are directly laminated. , And from the viewpoint of compatibility with the cyclic olefin resin, it is preferable to contain the olefin elastomer, the styrene elastomer, and the polyester elastomer alone or in combination of two or more. The thermoplastic elastomer is a high molecular weight material that exhibits rubber elasticity at 25 ° C., softens by heating, exhibits fluidity, and has reversibility due to heat.

Above all, it is more preferable that the thermoplastic elastomer is an olefin-based elastomer from the viewpoint of compatibility with the cyclic olefin-based resin and from the viewpoint of not including a six-membered ring structure and having few steric obstacles in the molecular structure, and the α-olefin. A copolymer (α-olefin-based elastomer) is more preferable, an ethylene-α-olefin-based elastomer and a propylene-α-olefin-based elastomer are particularly preferable, and an ethylene-α-olefin-based elastomer is most preferable. Examples of the α-olefin include ethylene, propylene, 1-butene, 1-hexene, 4-methyl-pentene and the like.

The content of the thermoplastic elastomer in the A layer is not particularly limited as long as the effect of the present invention is not impaired, but from the viewpoint of improving the interlayer adhesion and toughness of the laminated film and reducing the difference in brittleness between the A layer and the B layer. Therefore, the layer A preferably contains 1% by mass or more and 40% by mass or less of the thermoplastic elastomer, and more preferably 3% by mass or more and 30% by mass or less. Here, "the layer A contains 1% by mass or more and 40% by mass or less of the thermoplastic elastomer" means that the thermoplastic elastomer is contained in an amount of 1% by mass or more and 40% by mass when all the components constituting the layer A are 100% by mass. % Or less.

Further, from the viewpoint of improving the toughness and interlayer adhesion of the laminated film, it is also preferable that the A layer further contains a polyethylene-based resin. At this time, the content of the polyethylene-based resin in the A layer shall be 1% by mass or more and 40% by mass or less when all the components constituting the A layer are 100% by mass from the viewpoint of improving the quality of the laminated film. It is preferable, and it is more preferable that it is 3% by mass or more and 20% by mass or less.

(B layer)
From the viewpoint of improving the toughness and the design of the surface of the product member, the laminated film of the present invention has a layer containing polypropylene resin and polyethylene resin in a total amount of more than 50% by mass and 100% by mass or less as the B layer. In addition, it is important to have a B layer. Polypropylene-based resins and polyethylene-based resins have excellent toughness when made into a film. Therefore, by having the laminated film having the B layer, it is possible to reduce end defects, breakage, breakage, etc. in the process of cutting the laminated film and the process of winding while slitting the end while maintaining the moldability. Can be done. From the above viewpoint, the B layer preferably contains a polypropylene-based resin and a polyethylene-based resin in a total amount of 75% by mass or more and 100% by mass or less. Further, the other components of the B layer are not particularly limited, but when the laminated film has a structure in which the A layer and the B layer are directly laminated, it is preferable that the B layer contains a thermoplastic elastomer. By having such a configuration, the adhesion between the A layer and the B layer can be improved.

Here, the "layer containing polypropylene-based resin and polyethylene-based resin in a total amount of more than 50% by mass and 100% by mass or less" includes polypropylene-based resin and polyethylene-based resin, and the total content thereof constitutes the layer. A layer containing more than 50% by mass of all the components, or a layer containing either polypropylene-based resin or polyethylene-based resin and having a content of more than 50% by mass of all the components constituting the layer. When there are a plurality of types of polypropylene-based resin in the layer, the content of the polypropylene-based resin shall be calculated by adding up all the polypropylene-based resins. The same applies when a plurality of types of polyethylene-based resins are contained in the layer.

Whether or not the film has a layer (B layer) satisfying the definition shall be determined by evaluating whether or not at least one layer constituting the laminated film satisfies the above requirements. That is, even if the total content of the polypropylene-based and polyethylene-based resins in the entire laminated film is 50% by mass or less, if even one layer satisfying the above requirements is present, the B layer is provided. When the polypropylene-based resin and the polyethylene-based resin are included, the ratio or combination of the two is not particularly limited as long as the effect of the present invention is not impaired.

Polypropylene-based resin is a resin containing 100 mol% or more of propylene units in 100 mol% of all constituent units constituting the resin, or ethylene units in 100 mol% of all constituent units constituting the resin. And propylene unit are both contained in 50 mol%. The polypropylene-based resin in the B layer is not particularly limited as long as the effect of the present invention is not impaired. For example, a homopolypropylene resin which is a homopolymer of propylene, a random polypropylene resin copolymerized with ethylene, and both ethylene and propylene during polypropylene polymerization Block polypropylene resin or the like blended with the elastomer component of the polymer can be contained alone or in combination of two or more. Above all, from the viewpoint of improving the adhesion between the A layer and the B layer described later, it is preferable to contain the random polypropylene resin and the block polypropylene resin alone or in combination, and it is more preferable to contain the random polypropylene resin alone. ..

The polyethylene-based resin refers to a resin containing more than 50 mol% and 100 mol% or less of ethylene units in 100 mol% of all the constituent units constituting the resin. The polyethylene-based resin in the B layer is not particularly limited as long as the effect of the present invention is not impaired, and for example, low-density polyethylene (LDPE: density measured by the high-pressure method (hereinafter, may be simply referred to as density) is 900 to 945 kg. / M ³ polyethylene), high density polyethylene (HDPE: polyethylene with a density greater than 945 kg / m ³ ), and linear low density polyethylene (LLDPE: manufactured by the low pressure method using a single-site or multi-site catalyst, and It is preferably at least one polyethylene-based resin selected from the group consisting of polyethylene having a density of 900 to 945 kg / m ³ . Among them, it is preferable to contain high-density polyethylene and linear low-density polyethylene alone or in combination, and it is more preferable to contain linear low-density polyethylene alone.

(Layer composition, composition, thickness of laminated film)
From the viewpoint of improving toughness and moldability, the laminated film of the present invention preferably contains 5% by mass or more and less than 50% by mass of a cyclic olefin resin. Here, "the laminated film contains 5% by mass or more and less than 50% by mass of the cyclic olefin resin" means that the cyclic olefin resin is 5% by mass or more when all the components constituting the laminated film are 100% by mass. It means that it contains less than 50% by mass. When all the components constituting the laminated film are 100% by mass, the moldability of the laminated film is improved by containing 5% by mass or more of the cyclic olefin resin, and the amount of the cyclic olefin resin is kept to less than 50% by mass. As a result, the decrease in toughness is reduced, and the frequency of defects such as end defects, breakage, and breakage during slitting can be reduced.

From the above viewpoint, the laminated film of the present invention preferably contains 5% by mass or more and 45% by mass or less of the cyclic olefin resin when all the components constituting the laminated film are 100% by mass. It is more preferably contained in an amount of 40% by mass or more, and further preferably contained in an amount of 20% by mass or more and 40% by mass or less. The amount of the cyclic olefin resin in the laminated film can be adjusted, for example, by adjusting the content of the cyclic olefin resin in the B layer and the relative thickness of the B layer in the laminated film.

The layer structure of the laminated film of the present invention is not particularly limited as long as it has a B layer on at least one side of the A layer and the B layer is located on at least one outermost layer. In addition, it may have a three-layer structure of B layer / A layer / B layer, and a structure of four or more layers having another layer between the A layer and the B layer. Above all, from the viewpoint of moldability, it is preferable to have the B layer on both sides of the A layer. The thickness of the laminated film of the present invention is not particularly limited as long as the effect of the present invention is not impaired, but is preferably 50 μm or more and 200 μm or less from the viewpoint of achieving both production stability and moldability.

(Storage modulus)
The laminated film of the present invention has a storage elastic modulus of 101 MPa or more and less than 1,000 MPa at 75 ° C. and a storage elastic modulus of 100 MPa or less at 120 ° C. from the viewpoint of achieving both dimensional stability and moldability in the processing process. It is preferable to have. The storage elastic modulus is an index expressing the viscoelastic property by focusing on the phase delay of the stress and strain property of the substance. In the present invention, the storage elastic modulus (MPa) at 75 ° C. and the storage elastic modulus (MPa) at 120 ° C. described later are measured by the methods described below.

The storage elastic modulus at 75 ° C. of 101 MPa or more and less than 1,000 MPa means that the storage elastic modulus at 75 ° C. in the longitudinal direction and the width direction is 101 MPa or more and less than 1,000 MPa, and is hereinafter at 120 ° C. The storage modulus can be interpreted in the same way. Here, the longitudinal direction refers to the direction in which the laminated film advances in the manufacturing process (corresponding to the winding direction of the roll when wound in a roll shape), and the width direction is parallel to the film surface. The direction orthogonal to the longitudinal direction.

When the laminated film is wound on a roll, the longitudinal direction and the width direction can be easily specified, but in the case of a sheet-shaped laminated film which is not wound on the roll, the longitudinal direction and the width direction can be easily specified. The width direction cannot be easily specified. In such a case, after measuring the storage elastic modulus of the laminated film at 75 ° C. in one direction arbitrarily selected by the method described above, the laminated film is rotated 5 ° to the right to perform the same measurement. It shall be repeated until the angle formed by the measurement direction and the first measurement direction reaches 175 °, and the direction with the largest value shall be treated as the longitudinal direction.

By setting the storage elastic modulus at 75 ° C. to 101 MPa or more, it is possible to reduce dimensional changes in processing processes such as coating, laminating, printing, and thin film deposition. Further, by setting the storage elastic modulus at 75 ° C. to less than 1,000 MPa, it is possible to reduce the decrease in productivity while ensuring toughness. From the viewpoint of dimensional stability in the workability of the processing process, the storage elastic modulus at 75 ° C. is more preferably 200 MPa or more and less than 1,000 MPa, further preferably 300 MPa or more and less than 1,000 MPa, and 400 MPa or more. It is particularly preferably less than 1,000 MPa.

Further, by setting the storage elastic modulus of the laminated film at 120 ° C. to 100 MPa or less, not only the laminated film has excellent moldability, but also the molding temperature can be set to a relatively low temperature of 150 ° C. or less. Therefore, the laminated film can be suitably used not only for molding a member having a relatively high melting point such as metal, but also for molding a member having a relatively low melting point such as a resin. When higher moldability is required, the storage elastic modulus of the laminated film at 120 ° C. is more preferably 50 MPa or less, further preferably 30 MPa or less, and particularly preferably 25 MPa or less. The lower limit of the storage elastic modulus at 120 ° C. is not particularly limited as long as the effect of the present invention is not impaired, but 0.5 MPa is sufficient from the viewpoint of moldability of the laminated film.

In the laminated film of the present invention, the method of setting the storage elastic modulus at 75 ° C. to 101 MPa or more and less than 1,000 MPa or the above-mentioned preferable range and the storage elastic modulus at 120 ° C. to 100 MPa or less or the above-mentioned preferable range is the method of the present invention. The present invention is not particularly limited as long as the effect is not impaired, and examples thereof include a method in which the cyclic olefin resin is contained in an amount of 5% by mass or more and less than 50% by mass when all the components constituting the laminated film are 100% by mass. ..

Further, from the viewpoint that the storage elastic modulus of the laminated film at 75 ° C. is more easily set to 101 MPa or more and less than 1,000 MPa or the above-mentioned preferable range, the glass transition temperature of the B layer is set to 75 ° C. or higher, and the entire laminated film is formed. It is preferable that the total thickness ratio of the B layer to the thickness ratio of 100% is 20% or more and less than 50%. Further, from the viewpoint of more easily setting the storage elastic modulus of the laminated film at 120 ° C. to 100 MPa or less or the above-mentioned preferable range, the glass transition temperature of the B layer is set to 120 ° C. or less, and the thickness ratio of the entire laminated film is 100%. It is preferable that the total thickness ratio of the B layer to 20% or more and less than 50%. The "total thickness ratio of the B layer" means the total thickness ratio of all the corresponding B layers in the entire laminated film. The thickness of the laminated film can be measured by a dial gauge, and the layer thickness of each layer can be measured by observing a cross-sectional photograph when the film is cut perpendicular to the film surface.

(Surface gloss)
From the viewpoint of the design of the surface of the product member, the laminated film of the present invention preferably has a surface glossiness of 50% or less at 25 ° C. on the surface of at least one B layer. With such an aspect, the product member can have a calm appearance with less gloss. When the surface glossiness of the B layer at 25 ° C. exceeds 50% on both sides, the surface smoothness of the design surface applied on the film is excessively increased, so that the surface gloss of the product member becomes excessive and the appearance of the product member becomes excessive. It can be very glaring. From the above viewpoint, the preferable range of the surface glossiness of the surface of at least one B layer is 1% or more and 40% or less, and more preferably 3% or more and 30% or less. In the present invention, the surface glossiness is measured by the method described later.

In the laminated film of the present invention, from the viewpoint of the design of the surface of the product member, when the surface glossiness at 25 ° C. is X and the surface glossiness at 120 ° C. is Y on the surface of at least one of the B layers. It is preferable that Y / X is 1.0 or more and 5.0 or less. Here, the "surface glossiness at 120 ° C." means the surface glossiness after heat treatment at 120 ° C. for 5 minutes in a hot air circulation oven. When Y / X exceeds 5.0, the surface glossiness of the film becomes excessively high, so that the design of the surface of the product member may be impaired. From the above viewpoint, the preferable range of Y / X is 1.0 or more and 3.0 or less, and more preferably 1.0 or more and less than 2.0.

In the laminated film of the present invention, the method of setting the surface glossiness of the surface of at least one B layer at 25 ° C. to 50% or less and the Y / X to 1 or more and 5 or less is not particularly limited, but for example, a molten resin is used. Examples thereof include a method of extruding from a T-die and then cooling and solidifying with a pair of metal shaping rolls and a rubber shaping roll of 20 ° C. or higher and 60 ° C. or lower. At this time, by setting the surface roughness Ra of the roll forming the B layer in the pair of rolls to 0.2 μm or more and 4.0 μm or less and selecting the temperature setting condition, at least one of the surfaces of the B layer at 25 ° C. The surface glossiness can be 50% or less, and the Y / X can be 1 or more and 5 or less.

(Orientation)
The laminated film of the present invention is preferably a non-oriented film from the viewpoint of improving moldability. The non-aligned film means a film having a plane orientation coefficient (fn) of 0.00 or more and 0.05 or less. The plane orientation coefficient (fn) is the refractive index (Nx) in the direction having the highest refractive index in the film surface, the refractive index (Ny) in the direction orthogonal to the direction having the largest refractive index in the film plane, and the thickness of the film. The refractive index (Nz) in the direction is a value calculated by the following equation.

Surface orientation coefficient (fn) = {(Nx + Ny) / 2} -Nz.

At this time, the refractive index (Nx, Ny, Nz) in each direction in the laminated film of the present invention is such that Nx is the refractive index in the longitudinal direction (nMD), Ny is the refractive index in the width direction (nTD), and Ny is the thickness direction. It refers to the refractive index (nZD). The plane orientation coefficient (fn) is measured by the method described later.
The plane orientation coefficient (fn) is measured on both sides, and if at least one value satisfies the above requirements, it can be regarded as an unaligned film. From the above viewpoint, the plane orientation coefficient (fn) of the laminated film is more preferably 0.00 or more and 0.03 or less, and further preferably 0.00 or more and 0.02 or less.

The method of setting the plane orientation coefficient of the laminated film of the present invention to 0.00 or more and 0.05 or less is not particularly limited, but for example, a film is formed by a known method such as an inflation method, a tubular method, or a T die casting method. , A method in which stretching is not performed in either direction can be mentioned. Above all, the T die casting method is preferably used in order to easily reduce the thickness of the laminated film to 50 μm or more and 200 μm or less.

(Use and molded transfer foil)
The laminated film of the present invention is not particularly limited in its use, but has toughness, quality, adhesion to the design layer in the processing process to the molded transfer foil, dimensional stability, and the design layer after the molding process. Since it is excellent in releasability and moldability, it is preferably a film for molding, and more preferably a film for molding transfer foil. Here, the molding film refers to a support film for transferring a design layer or the like formed on the surface to a molding member (adhesive body). Further, the molded transfer foil means a laminated body having a layer transferred to a molding member on the surface of the molding film.

In the molded transfer foil of the present invention, it is important that the laminated film, the design layer, and the adhesive layer of the present invention are located in this order from the viewpoint of facilitating the addition of decoration to the molded member. Here, the design layer refers to a layer for adding decorations such as coloring, pattern, wood grain, metal, and pearl to the molded member. The adhesive layer is a layer that is responsible for adhering the molded member and the design layer. Further, the laminated film, the design layer, and the adhesive layer of the present invention are located in this order regardless of whether or not there is another layer between the laminated film and the design layer, and the design layer and the adhesive layer of the present invention. It refers to all aspects in which the laminated film, the design layer, and the adhesive layer of the present invention are located in this order. By transferring the design layer to the molded member using the molded transfer foil of such an embodiment and peeling off the laminated film of the present invention, a product member having excellent designability (molded member after molding decoration) can be obtained. Can be done.

In the transfer foil for molding of the present invention, it is preferable that the design layer is located on the B layer side of the laminated film of the present invention from the viewpoint of the design of the surface of the product member.

Further, in the molded transfer foil of the present invention, it is preferable that the protective layer is located between the laminated film of the present invention and the design layer from the viewpoint of protecting the surface of the product member. Here, the protective layer means a layer that plays a role of protecting the design layer transferred to the product member. With such an embodiment, the scratch resistance, weather resistance, designability, etc. of the surface of the product member after the molded transfer foil is adhered to the molded member and only the laminated film is peeled off are improved.

The resin used for the protective layer in the molded transfer foil of the present invention is not particularly limited as long as the effect of the present invention is not impaired, but is preferably a highly transparent resin from the viewpoint of not impairing the appearance of the product member. For example, polyester resin, polyolefin resin, acrylic resin, urethane resin, fluororesin, polyvinyl acetate resin, vinyl chloride-vinyl acetate copolymer, ethylene-vinyl acetate copolymer and the like are preferably used. Can be done. Further, from the viewpoint of improving the scratch resistance of the product member, it is preferable to use a thermosetting resin, an ultraviolet curable resin, an electron beam curable resin, and a heat ray curable resin, and it is preferable to use an ultraviolet curable resin, an electron beam curable resin, or the like. It is more preferable to use an ultraviolet curable acrylic resin and an electron beam curable acrylic resin. These resins may be used alone or in combination as long as the effects of the present invention are not impaired. The protective layer can be formed by coating or laminating the laminated film.

The method for forming the design layer is not particularly limited as long as the effect of the present invention is not impaired, and for example, coating, printing, metal vapor deposition and the like can be used. Resins used for the design layer include polyester resin, polyolefin resin, acrylic resin, urethane resin, fluororesin, polyvinyl acetate resin, vinyl chloride-vinyl acetate copolymer, and ethylene-vinyl acetate. Examples include copolymers. These resins may be used alone or in combination of two or more as long as the effects of the present invention are not impaired.

The colorant in the design layer is not particularly limited as long as the effect of the present invention is not impaired, and can be appropriately selected from dyes, inorganic pigments, organic pigments and the like in consideration of dispersibility in the resin used for the design layer and the like. ..

When the design layer is formed by coating or printing, the thickness thereof is preferably 1 μm or more and 100 μm or less, more preferably 2 μm or more and 50 μm or less, and 5 μm from the viewpoint of color tone retention and designability of the product member. It is more preferably 40 μm or less.

Further, the method for forming the design layer by metal vapor deposition is not particularly limited as long as the effect of the present invention is not impaired, and a vacuum vapor deposition method, an EB vapor deposition method, a sputtering method, an ion plating method and the like can be used. The metal in the metal vapor deposition is not particularly limited as long as the effect of the present invention is not impaired, but from the viewpoint of moldability of the design layer, indium or tin is preferable, and indium is more preferable.

When the design layer is formed by metal vapor deposition, the thickness thereof is preferably 0.001 μm or more and 100 μm or less, and 0.01 μm or more and 50 μm or less, from the viewpoint of achieving both the moldability and the design property of the design layer. Is more preferable, and 0.02 μm or more and 30 μm or less is further preferable.

The material of the adhesive layer provided on the design layer for the purpose of imparting adhesiveness to the molded member is not particularly limited as long as the effect of the present invention is not impaired, but a heat-sensitive type resin or a pressure-sensitive type resin can be used. As the heat-sensitive type resin, for example, polyester-based resin, polyolefin-based resin, acrylic-based resin, polyamide-based resin, polyurethane resin and the like are preferably used. Examples of the pressure-sensitive type resin include acrylic resin, polyphenylene oxide / polystyrene resin, polycarbonate resin, styrene copolymer resin, polystyrene resin, polyamide resin, chlorinated polyolefin resin, and chlorinated ethylene-acetic acid. Vinyl copolymer resin, cyclized rubber, Kumaron inden resin, polyurethane resin, polyvinyl ether resin, polyvinyl acetate resin and the like are preferably used. As long as the effect of the present invention is not impaired, these may be used alone or in combination of two or more.

The method for forming the adhesive layer is not particularly limited as long as the effect of the present invention is not impaired, and for example, a coating method such as a roll coating method, a gravure coating method, a comma coating method, and a printing method such as a gravure printing method or a screen printing method Can be used.

The molding member to be decorated using the molding transfer foil using the molding film of the present invention is not particularly limited as long as the effect of the present invention is not impaired, and for example, polypropylene, acrylic, polystyrene, polyacrylonitrile / styrene, and Examples thereof include members whose main component is a resin such as polyacrylonitrile, butadiene, and styrene, and members whose main component is a metal such as aluminum, magnesium, iron, titanium, copper, and zinc.

(Manufacturing method of laminated film and molded transfer foil)
Next, the method for producing a laminated film of the present invention will be specifically described by taking as an example a film having a B layer / A layer / B layer having a two-kind three-layer structure and having the same composition of the B layers on both sides. However, the method for producing the laminated film of the present invention is not limited to this.

In order to obtain a molten resin composition for obtaining the A layer of the laminated film, that is, a molten resin composition having a cyclic olefin resin as a main component and containing a thermoplastic elastomer, a melt kneading method in which each component is melt-kneaded. It is preferable to use. The melt-kneading method is not particularly limited, and a mixer such as a kneader, a roll mill, a Banbury mixer, and a single-screw or twin-screw extruder can be used. Above all, from the viewpoint of productivity, it is preferable to use a single-screw extruder. There is also a method for obtaining a molten resin composition for obtaining the B layer of the laminated film, that is, a molten resin composition containing a total of more than 50% by mass of polypropylene-based and polyethylene-based resins when all the components are 100% by mass. The same is true. At this time, the temperature of the raw material supply unit and thereafter can be appropriately set in consideration of the melting point of the resin and the like. For example, in either extruder, these temperatures may be set to 200 ° C. or higher and 300 ° C. or lower. preferable.

Subsequently, using a filtration device equipped with a leaf disc filter or the like, foreign matter or the like is removed from each molten resin composition obtained by melt-kneading, and melted so as to form a B layer / A layer / B layer with a feed block. The resin composition is laminated and discharged from the T-die into a sheet. At this time, the thickness of the laminated film can be adjusted by adjusting the size of the lip gap of the T-die. Further, the laminated film of the present invention can be obtained by cooling and solidifying the molten sheet-like material thus obtained on a cast roll whose temperature is controlled to 0 ° C. or higher and 100 ° C. or lower, and the laminated film of the present invention is wound into a roll shape. It can also be taken as a film roll. The cast roll is preferably made of metal because it comes into contact with a high-temperature molten resin.

Further, from the viewpoint of easily adjusting the surface roughness (SRa) of the laminated film, the surface roughness of the cast roll can be appropriately adjusted, and the molten sheet is made of rubber at the stage of cooling and solidifying on the cast roll. Niping with a shaping roll can also be preferably performed. At this time, by increasing the SRa of the cast roll or the rubber shaping roll, the SRa of the laminated film to which the SRa is transferred can also be increased.

The laminated film thus obtained is excellent in quality, productivity, dimensional stability in the processing process, and moldability, and therefore can be suitably used as, for example, a film for molding, preferably a film for a molded transfer foil. Hereinafter, the method for producing a molded transfer foil will be specifically described with reference to an example in which the design layer is an acrylic / urethane-based black ink layer, but the molded transfer foil of the present invention is not limited thereto.

First, the film is unwound from the film roll of the laminated film obtained by the above method, and an acrylic / urethane-based black ink is applied to one surface using an applicator to form a design layer. Further, an adhesive is applied to the surface of the design layer using an applicator and dried to form an adhesive layer. As long as the effect of the present invention is not impaired, an appropriately selected adhesive can be used. Specific examples of the adhesive include 892L manufactured by Nippon Chemical Co., Ltd. The molded transfer foil thus obtained is excellent not only in moldability but also in mold releasability with the design layer after the molding process.

Hereinafter, the present invention will be described in more detail with reference to examples, but the present invention is not limited thereto.

[Measurement and evaluation method]
The measurement and evaluation of each item were performed under the following conditions.

(1) Film thickness and layer thickness of each layer The film thickness (μm) was determined by measuring the thickness at any place (5 places) of the film sample using a dial gauge and averaging the obtained values. For the layer thickness (μm) of each layer of the laminated film or molded transfer foil, a cross-sectional photograph of the laminated film was taken at a magnification of 100 times using a metallurgical microscope LeicaDMLM manufactured by Leica Microsystems, Inc., and each layer was taken from the obtained photograph. It was obtained by measuring the thickness of any five places and calculating the average value of the obtained values.

(2) Windability of film The transportability of the film and the surface condition of the wound film roll in the winding process at the time of film production were observed, and the windability was evaluated according to the following criteria. A has the best take-up property, and B or higher is regarded as acceptable.
A: The film was conveyed in a good state, and the wound film roll was dented and no convex deformation was visually observed.
B: The conveyed state of the film was good, but dents and convex deformations were visually observed on the wound film roll to the extent that there was no practical problem.
C: The film was poorly transported (there was meandering or swelling when the film was transported), or dents and convex deformations that were practically problematic were observed on the wound film roll.

(3) Film surface roughness SRa
The surface roughness SRa of the film conforms to the parameters of ISO25178 (2010), and the observation mode = Focus using an optical interference type microscope (“VertScan” (registered trademark) 2.0 manufactured by Mitsubishi Chemical Systems, Inc.). The surface morphology of the cast roll surface side at the time of film production was observed in the mode, filter = 530 nm white, and Scan Range = 105 nm, and the average surface roughness SRa of the central surface was determined. The measurement was performed 3 times per level, and it was calculated from the average value.

(4) Storage Elastic Modulus A sample of 60 mm (longitudinal direction (measurement direction)) × 5 mm (width direction) was arbitrarily cut out from the laminated film to obtain a measurement sample. Next, the obtained measurement sample was measured by a dynamic viscoelasticity measuring device (DVE-V4 FT Leospectra manufactured by Rheology) under the following measurement conditions, and the storage elastic modulus (MPa) in the longitudinal direction at 75 ° C. and 120 ° C. was measured. ) (JIS K 7244-4: 2007). The storage elastic modulus (MPa) in the width direction at 75 ° C. and 120 ° C. was also measured and calculated in the same manner.

<Measurement conditions>
Frequency: 10Hz
Trial length: 20 mm
Displacement amplitude: 10 μm
Measurement temperature range: 25 ° C to 160 ° C
Heating rate: 5 ° C / min.

(5) Surface Gloss at 25 ° C. A square sample having a size of 50 mm × 50 mm was arbitrarily cut out from the laminated film and used as a measurement sample. The surface glossiness of the film surface was measured using a digital variable angle gloss meter UGV-5B (manufactured by Suga Test Instruments Co., Ltd.) according to JIS Z-8741 (1997). The same measurement was repeated 5 times, and the average value of the obtained measured values was taken as the surface gloss at 25 ° C. The measurement conditions were an incident angle = 60 ° and a light receiving angle = 60 °.

(6) Surface gloss at 120 ° C and Y / X
A square sample having a size of 50 mm × 50 mm was arbitrarily cut out from the laminated film and used as a measurement sample. This measurement sample is heat-treated in a hot air circulation oven at 120 ° C. for 5 minutes, and a digital variable angle gloss meter UGV-5B (manufactured by Suga Test Instruments Co., Ltd.) is used according to JIS Z-8741 (1997). The surface gloss of the film surface was measured. The same measurement was repeated 5 times, and the average value of the obtained measured values was defined as Y as the surface gloss at 120 ° C. The measurement conditions were an incident angle = 60 ° and a light receiving angle = 60 °. Further, the surface glossiness at 25 ° C. measured by the method described in (5) was defined as X, and Y / X was determined.

(7) Slit property of laminated film Slit property of laminated film is an index for evaluating the degree of occurrence of defects such as edge defects, breakage, and breakage of the film in the processing process, in other words, toughness. A method for measuring the slit property of the laminated film will be described with reference to FIG. Using a biaxial slitter set with a single-edged blade (FAS-10) manufactured by Feather Safety Sword Co., Ltd., a laminated film having a length of 200 m in the longitudinal direction 1 is subjected to conditions of a tension of 15 kg / m and a speed of 30 m / min. , The slit was made parallel to the longitudinal direction 1 and perpendicular to the width direction 2 by an aerial cut. The presence or absence of unevenness is confirmed by visually observing the widthwise end 3 after the slit from the direction perpendicular to the film surface, and if there is unevenness, the period 4 in the longitudinal direction and the amplitude 5 in the width direction are measured by a metal scale (JIS1). Measured by class scale). The slit property of the film was evaluated according to the following criteria, and C or higher was regarded as acceptable.
A: No unevenness was observed, or unevenness with a period of less than 0.5 mm and an amplitude of less than 5 mm was observed.
B: Unevenness with a period of 0.5 mm or more and an amplitude of less than 5 mm was observed.
C: Unevenness with an amplitude of 5 mm or more and an amplitude of less than 10 mm was observed.
D: The film was broken in the slit, or unevenness with an amplitude of 10 mm or more was observed.

(8) Adhesion between layer A and layer B A rectangular sample of 15 mm × 110 mm was arbitrarily cut out from the laminated film and used as a test piece. Next, by using a MIT folding resistance tester (MID-D, manufactured by Toyo Seiki Seisakusho Co., Ltd.), the test piece was placed in the short side direction under the conditions of a rotation speed of 175 cpm, a measured load of 25 N (2.6 kgf), and a bending angle of 135 °. Ten evaluation samples were prepared by repeating bending 10 times in parallel, and evaluated according to the following criteria. As for the adhesion between the A layer and the B layer, B or higher was regarded as acceptable.
A: No delamination was observed at the bent part.
B: There was one or more samples in which peeling was observed at the end of the bent part, but there was no sample in which the peeled parts at both ends of the bent part were connected to each other.
C: One or more samples in which the peeled parts at both ends of the bent part were connected to each other were observed.

(9) Planar Orientation Index A rectangular sample of 50 mm (longitudinal direction) x 50 mm (width direction) is arbitrarily cut out from the laminated film and used as a test piece, and the Abbe refractometer NAR-4T is used as a light source of sodium D line (wavelength 589 nm). (Manufactured by Atago Co., Ltd.) was used to measure the refractive index (nMD) in the longitudinal direction and the refractive index (nTD) in the width direction in any one B layer of the laminated film. Next, the B layer was cut using a microtome (manufactured by Leica), and the refractive index (nMD) in the longitudinal direction and the refractive index (nTD) in the width direction of the layer A were measured in the same manner as in the layer B. Further, the test piece was cut in the thickness direction using a microtome, the refractive index (nZD) in the thickness direction in each layer of the laminated film was measured, and the plane orientation coefficient (fn) was calculated from the following formula.
fn = (nMD + nTD) /2-nZD.

(10) Workability at the time of forming a design layer Acrylic resin (Toyo Chemical Co., Ltd.) is used on one side of a laminated film cut into a square shape of 100 mm (longitudinal direction) × 100 mm (width direction) at an arbitrary position from a film roll using an applicator. A black ink obtained by dispersing carbon black was applied to 6500B) and dried at 80 ° C. for 5 minutes to form a design layer having a coating film thickness of 30 μm, which was used as a measurement sample. With respect to the obtained measurement sample, dimensional changes in the width direction and the longitudinal direction of the film were observed, and the workability was evaluated according to the following criteria. At this time, the design layer is formed on the surface that was located on the mirror-like rubber shaping roll side at the time of film formation, and the dimensional change is measured by using a caliper to measure the length change in the width direction and the longitudinal direction of the film before and after drying. It was decided to calculate. As for the workability at the time of forming the design layer, B or higher was regarded as acceptable.
A: The dimensional change in both the width direction and the longitudinal direction was less than 1 mm.
B: There was a dimensional change of 1 mm or more and less than 5 mm in at least one of the width direction and the longitudinal direction, and there was no dimensional change of 5 mm or more in both the width direction and the longitudinal direction.
C: There was a dimensional change of 5 mm or more in at least one of the width direction and the longitudinal direction.

(11) Moldability of Molded Transfer Foil A design layer was formed on one side of a laminated film unwound from a film roll by the method described in (10), and cut into a square shape of 200 mm × 200 mm to prepare a sample. An adhesive (892L manufactured by Nippon Chemical Co., Ltd.) is applied to the surface of the design layer of the obtained sample using an applicator, and then dried at 80 ° C. for 10 minutes to form an adhesive layer having a coating film thickness of 20 μm and molded and transferred. Foil samples were obtained. The molded transfer foil sample thus obtained was heated to a temperature of 120 ° C. using a three-dimensional vacuum heating molding machine (OMD molding machine / VHT) manufactured by FEIYI PRECISION Industrial Co., Ltd., and made of polypropylene heated to 50 ° C. Vacuum / pressure molding (pushing: 0.2 MPa) was performed along the resin mold (cylindrical shape with a bottom diameter of 150 mm) to obtain a molded body in which the laminated film / design layer / adhesive layer / polypropylene resin mold are located in this order. .. The moldability of the molded transfer foil was evaluated based on the following criteria from the obtained molded body in a state where it could be molded along a polypropylene resin mold (drawing ratio: molding height / bottom diameter). The moldability of the molded transfer foil was C or higher.
A: It was possible to mold with a drawing ratio of 1.0 or more.
B: Molding was possible with a drawing ratio of 0.8 or more and less than 1.0, but molding was not possible with a drawing ratio of 1.0 or more.
C: Molding was possible with a drawing ratio of 0.7 or more and less than 0.8, but molding was not possible with a drawing ratio of 0.8 or more.
D: Molding was not possible with a drawing ratio of 0.7 or more.

(12) Glass transition temperature of layer A Only the layer A portion was scraped from the laminated film unwound from the film roll by 5 mg to make a sample, and a differential scanning calorimeter (manufactured by Seiko Denshi Kogyo, RDC220, JIS K7121-1987, JIS K7122-). (Based on 1987) was used to measure the specific heat change based on the transition from the glass state to the rubber state when the sample was heated from 25 ° C. to 300 ° C. under the condition of a temperature rise rate of 20 ° C./min. For the obtained specific heat change, find the midpoint between the straight line equidistant from the extended straight line of each baseline in the vertical axis (axis indicating the heat flow) and the curve of the stepped change part of the glass transition. , The glass transition temperature. When a plurality of glass transition temperatures exist, the glass transition temperature on the highest temperature side was defined as the glass transition temperature of the A layer.

(13) Surface appearance of the product member The surface appearance of the product member refers to the surface appearance of the product member after the design layer and the adhesive layer are transferred to the product member by a molded transfer foil and only the laminated film is peeled off. Since the surface appearance of the product member is affected by the quality of the laminated film, it is an index for evaluating the quality. An acrylic / urethane-based black ink was applied to the surface of the laminated film unwound from the film roll using a die coater, and dried at 80 ° C. for 10 minutes to form a design layer having a coating film thickness of 30 μm. Further, 892 L manufactured by Nippon Chemical Co., Ltd. was applied onto the design layer by an applicator and dried at 80 ° C. for 10 minutes to form an adhesive layer having a coating film thickness of 20 μm, which was then wound again to prepare a molded transfer foil roll. .. A molded transfer foil was cut out from the obtained molded transfer foil roll to a size of 200 mm (longitudinal direction) × 300 mm (width direction) at an arbitrary position. Next, the molded transfer foil and the molded member were overlapped in the order of laminated film / design layer / adhesive layer / molded member (flat polypropylene resin mold) and vacuum / pneumatic molding was performed to obtain a molded body. The adhesive layer was cured by irradiating with ultraviolet rays so that the irradiation intensity was 2,000 mJ / cm ² . Then, the surface of the product member obtained by peeling only the laminated film from the molded body was observed, and the surface appearance was visually evaluated according to the following criteria. As for the surface appearance of the product member, B or higher was regarded as acceptable.
A: The surface design is very high.
B: The surface shape is smooth or slightly rough, but the surface design is high.
C: The surface shape is very rough and the surface design is low.

[Resin used for manufacturing laminated film]
The following resins were used as the resins for obtaining the laminated films of each example and each comparative example.

(Polypropylene resin)
Random polypropylene resin ("Prime Polypro" (registered trademark) Y-2045GP manufactured by Prime Polymer Co., Ltd.)
(Polyethylene resin)
Linear low-density polyethylene (Prime Polymer Co., Ltd. "Evolu" (registered trademark) SP2540)
(Cyclic olefin resin A)
Copolymer of norbornene and ethylene ("TOPAS" (registered trademark) 8007F-04 manufactured by Polyplastics Co., Ltd.)
(Cyclic olefin resin B)
Copolymer of norbornene and ethylene ("TOPAS" (registered trademark) 6013F-04 manufactured by Polyplastics Co., Ltd.)
(Thermoplastic elastomer)
Ethylene-α-olefin elastomer (“Esplen” (registered trademark) SPO manufactured by Sumitomo Chemical Co., Ltd.).

(Example 1)
The raw materials for obtaining the A layer and the B layer have the composition shown in Table 1-1, and are supplied to separate single-screw extruders (L / D = 30), and the temperature of the supply unit is 230 ° C. and the temperature thereafter. It was melt-kneaded at 240 ° C. Next, foreign matter was removed from each molten thermoplastic resin composition by passing it through a filtration device equipped with a leaf disk filter having a filtration accuracy of 30 μm, and the thickness ratio was 15:70:15 in the feed block installed on the upper part of the die. After laminating the B layer raw material / A layer raw material / B layer raw material so as to be, a matte metal shaped roll (equivalent to a cast roll) whose temperature is controlled to 40 ° C. from a T die (lip gap: 0.4 mm). Roughness Ra: 0.9 μm) was discharged in the form of a sheet. At that time, niping was performed with a mirror-like rubber shaping roll whose temperature was controlled to 30 ° C. (surface roughness Ra: 0.05 μm, nip pressure: 0.2 MPa) to obtain a laminated film having a thickness of 100 μm. It was wound into a roll. Then, the molded transfer foil was manufactured by the methods described in "(10) Workability at the time of forming the design layer" and "(11) Moldability of the molded transfer foil". Each evaluation item was evaluated on the obtained laminated film and molded transfer foil. The evaluation results are shown in Table 1-1.

(Examples 2 to 11, Comparative Examples 1 to 5)
A laminated film and a molded transfer foil were produced in the same manner as in Example 1 except that the composition and the lamination ratio of each layer were as shown in Tables 1-1 to 1-3, and evaluated in the same manner. The evaluation results are shown in Table 1-1 to Table 1-3. In Example 9, the laminated body of the molten thermoplastic resin composition was discharged so that the B layer raw material came into contact with the matte metal shaping roll.

The component amount (mass%) of each layer is calculated assuming that all the components constituting each layer are 100% by mass, and the cyclic olefin resin amount (mass%) in the laminated film is calculated assuming that all the components constituting the laminated film are 100% by mass. bottom. None of Comparative Examples 1 to 5 satisfy the requirements for the A layer or the B layer, but in these comparative examples, both outer layers are described as the B layer and the intermediate layer is described as the A layer.

INDUSTRIAL APPLICABILITY According to the present invention, it is possible to provide a laminated film having excellent quality, productivity, dimensional stability in a processing process, and moldability, and a molded transfer foil using the laminated film. By using the laminated film and the molded transfer foil of the present invention, it is possible to impart high designability to the product member (molded member after molding and decoration) in various molding methods such as vacuum forming, pressure forming, and press molding. Therefore, the laminated film and the molded transfer foil of the present invention can be suitably used for decorating molded members such as building materials, automobile parts, mobile phones, electric appliances, and gaming machine parts.

1 Longitudinal 2 Width 3 Width end 4 Longitudinal period 5 Width amplitude

Claims (14)

When the main component is a cyclic olefin resin and the layer containing the thermoplastic elastomer is the A layer, and the layer containing the polypropylene resin and the polyethylene resin in a total amount of more than 50% by mass and 100% by mass or less is the B layer. A laminated film having the B layer on at least one surface of the A layer, and the B layer is located on the outermost surface of at least one of the layers. The laminated film according to claim 1, which has the B layer on both sides of the A layer. The laminated film according to claim 1 or 2, which contains 5% by mass or more and less than 50% by mass of a cyclic olefin resin. The laminated film according to any one of claims 1 to 3, wherein the storage elastic modulus at 75 ° C. is 101 MPa or more and less than 1,000 MPa, and the storage elastic modulus at 120 ° C. is 100 MPa or less. The laminated film according to any one of claims 1 to 4, wherein the layer A contains 1% by mass or more and 40% by mass or less of a thermoplastic elastomer. The laminated film according to any one of claims 1 to 5, wherein the thermoplastic elastomer is an olefin-based elastomer. The laminated film according to any one of claims 1 to 6, wherein the surface glossiness at 25 ° C. is 50% or less on the surface of at least one of the B layers. Claim 1 on the surface of at least one of the B layers, where Y / X is 1.0 or more and 5.0 or less when the surface glossiness at 25 ° C. is X and the surface glossiness at 120 ° C. is Y. The laminated film according to any one of 7 to 7. The laminated film according to any one of claims 1 to 8, which is a non-oriented film. The laminated film according to any one of claims 1 to 9, which is a film for molding. The laminated film according to claim 10, wherein the molding film is a film for molding transfer foil. A molded transfer foil in which the laminated film, the design layer, and the adhesive layer according to any one of claims 1 to 11 are located in this order. The molded transfer foil according to claim 12, wherein the design layer is located on the B layer side of the laminated film according to any one of claims 1 to 11. The molded transfer foil according to claim 12 or 13, wherein a protective layer is located between the laminated film according to any one of claims 1 to 11 and the design layer.

Images