JP2017100287A - Decorative sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a decorative sheet having excellent workability and further capable of improving operability upon fitting.SOLUTION: Provided is a decorative sheet provided with: the first peeling layer 2; an adhesive layer 3 arranged on the surface of the first peeling layer 2; an epidermal layer 4 arranged on the surface of the adhesive layer 3; and the second peeling layer 5 arranged on the surface of the epidermal layer 4, in which the second peeling layer 5 is provided with a shape retaining layer 6, and the shrinkage percentage of the shape retaining layer 6 and the shrinkage layer of the epidermal layer 4 are 0/1,000 to 9/1,000 in both cases.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a decorative sheet.

  Conventionally, it is known to attach a decorative sheet such as a decorative material to interiors and exteriors of vehicles and buildings to impart design properties. More specifically, for example, it is known to stick a decorative sheet printed in a carbon tone on the outer surface of a bonnet portion of an automobile and decorate it like a lightened bonnet. .

  As such a decorative sheet, for example, an automobile interior part is proposed in which a soft skin material is pressure-bonded onto a core material and bonded together (for example, see Patent Document 1).

  The automobile interior parts are usually formed into a flat sheet shape. When using automotive interior parts, heat the automotive interior parts with a dryer, etc., and stretch them according to the shape of the adherend while applying them to the adherend using a separately prepared adhesive or adhesive tape. To wear.

  However, such automobile interior parts have a problem that the sticking work is complicated. Therefore, in order to improve workability, for example, it has been proposed to previously laminate an adhesive layer on the decorative sheet and further laminate a release layer on the adhesive layer.

  More specifically, for example, a cosmetic sheet is proposed in which a synthetic resin adhesive is applied to the back surface of a vinyl chloride resin sheet and a release paper is adhered (see, for example, Patent Document 2). .

  In the above-described cosmetic sheet, the release paper is peeled off during use, and the vinyl chloride resin sheet is pressure-bonded (adhered) to the adherend through the exposed synthetic resin adhesive.

Japanese Patent Publication No. 1-020048 JP-A-5-245981

  However, the above-described cosmetic sheet is also usually formed into a flat sheet shape. Therefore, at the time of use, it is necessary to stick the cosmetic sheet to the adherend while stretching it according to the shape of the adherend, and the sticking work is complicated.

  Therefore, in order to improve workability, it is considered to heat-mold the decorative sheet in advance and process it according to the shape of the adherend.

  However, when the above-described cosmetic sheet is heated, the cosmetic sheet may be deformed into an undesired shape or the cosmetic sheet may be damaged, resulting in poor workability.

  The objective of this invention is providing the decorating sheet | seat which is provided with the outstanding workability and can aim at the improvement of workability | operativity at the time of attachment.

  In order to achieve the above object, the decorative sheet of the present invention includes a first release layer, an adhesive layer disposed on the surface of the first release layer, and an outer skin layer disposed on the surface of the adhesive layer. And a second release layer disposed on the surface of the skin layer, the second release layer includes a shape-retaining layer, the shrinkage rate of the shape-retaining layer, and the skin layer The shrinkage rates are both 0/1000 to 9/1000.

  In the decorative sheet of the present invention, it is preferable that the softening start temperature of the shape retention layer and the softening start temperature of the skin layer are both 60 ° C. or more and 120 ° C. or less.

  In the decorative sheet of the present invention, the shape retention layer is a resin comprising at least one selected from ethylene vinyl acetate, acrylonitrile / butadiene / styrene copolymer, polystyrene, acrylonitrile / styrene copolymer, and polyvinyl chloride. A sheet is preferred.

  In the decorative sheet of the present invention, the second release layer is disposed on the surface of the skin layer, and the second release layer includes a shape-retaining layer. The shrinkage rate of the shape-retaining layer and the shrinkage of the skin layer Since the ratios are both 0/1000 to 9/1000, they can be deformed into an undesired shape during molding, can be prevented from being damaged, and can be prevented from being damaged on the skin layer during mounting. Can be planned.

  Therefore, the decorative sheet of the present invention is excellent in workability and further excellent in workability at the time of attachment.

Drawing 1 is a schematic structure figure showing one embodiment of a decoration sheet of the present invention. FIG. 2: is a schematic process drawing which shows one Embodiment of the manufacturing method of the shaping | molding sheet in this invention, Comprising: FIG. 2A is a process of preparing a decorating sheet, FIG. 2B is a process of heating a decorating sheet, FIG. 2C shows the process of vacuum forming the decorative sheet, and FIG. 2D shows the process of removing the molded sheet from the vacuum forming mold.

  In FIG. 1, the decorative sheet 1 includes a first release layer 2, an adhesive layer 3 disposed on the surface of the first release layer 2, an outer skin layer 4 disposed on the surface of the adhesive layer 3, and an outer skin. And a second release layer 5 disposed on the surface of the layer 4.

  The first release layer 2 is a sheet member that can be easily peeled from the adhesive layer 3 while being attached to the adhesive layer 3 in order to protect the adhesive layer 3. The second release layer 5 is a sheet member that is attached to the surface of the skin layer 4 in order to support the skin layer 4 while protecting it, and can be easily peeled off from the skin layer 4, and maintains its shape. Layer 6 is provided.

  As will be described in detail later, the shape retaining layer 6 retains a desired shape when the decorative sheet 1 is formed (for example, when heat-molded), and the decorative sheet 1 is different from the desired shape. In order to suppress the deformation, the second release layer 5 is provided.

  The 1st peeling layer 2 is a sheet member which has easy peelability with respect to the adhesion layer 3, Comprising: When sticking the decorating sheet 1 to a to-be-adhered body, the 1st peeling layer 2 is used as an adhesion layer. 3 is used after being peeled off.

  The first release layer 2 has, for example, a sheet shape extending in the surface direction and has a substantially rectangular shape in plan view.

  Examples of the first release layer 2 include a resin sheet, a nonwoven fabric, paper, and a metal foil. These can be used alone or in combination of two or more. The first release layer 2 is preferably a resin sheet.

  The shrinkage rate, softening start temperature, and thermal deformation temperature of the first release layer 2 are not particularly limited and are appropriately selected.

  Specific examples of the resin constituting the first release layer 2 (resin sheet) include polypropylene (PP), ethylene vinyl acetate (EVA), polyethylene (PE, high density polyethylene (HDPE), etc.). , Polyacetal (POM), polybutylene terephthalate (PBT), polyethylene terephthalate (PET), polyphenylene sulfide (PPS), polyamide (PA, nylon 6, nylon 6,6 etc.), polyether ether ketone (PEEK), etc. Resins such as acrylonitrile / butadiene / styrene copolymer (ABS), polystyrene (PS), acrylonitrile / styrene copolymer (AS), polycarbonate (PC), polyvinyl chloride (PVC), polymethacrylic acid methyl ester (PMMA) ) How such amorphous resins.

  These resins constituting the first release layer 2 can be used alone or in combination of two or more.

  The resin constituting the first release layer 2 is preferably a crystalline resin, more preferably polypropylene (PP).

  The resin which comprises the 1st peeling layer 2 can obtain the outstanding easy peelability by selecting suitably what has easy peelability with respect to the below-mentioned adhesion layer 3. FIG.

  Moreover, as the 1st peeling layer 2, what gave the well-known easy peeling process to the surface (contact surface of the adhesion layer 3) of the resin sheet can also be used. As an easy peeling process, a well-known fluorine process etc. are mentioned, for example.

  The thickness of the 1st peeling layer 2 is 10 micrometers or more, for example, Preferably, it is 30 micrometers or more, More preferably, it is 50 micrometers or more, for example, 100 micrometers or less, Preferably, it is 80 micrometers or less, More preferably, it is 60 micrometers or less.

  The thickness of the first release layer 2 is, for example, 1% or more, preferably 5% or more, more preferably 10% or more, for example, 50% or less, with respect to the thickness of the shape retention layer 6. Preferably, it is 30% or less, more preferably 20% or less.

  The pressure-sensitive adhesive layer 3 is formed from, for example, a known pressure-sensitive adhesive.

  Examples of adhesives include acrylic adhesives, urethane adhesives, epoxy adhesives, silicone adhesives, polyester adhesives, polyamide adhesives, vinyl alkyl ether adhesives, fluorine adhesives, and rubbers. System adhesives and the like.

  These pressure-sensitive adhesives can be used alone or in combination of two or more.

  As an adhesive, Preferably, an acrylic adhesive is mentioned.

  The acrylic pressure-sensitive adhesive is, for example, a pressure-sensitive adhesive mainly composed of (meth) acrylic alkyl ester, and can be obtained by a known method.

  Moreover, the form in particular of an adhesive is not restrict | limited, For example, various forms, such as a solid adhesive, a solvent adhesive, an emulsion adhesive, an oligomer adhesive, are employable.

  The method for laminating the skin layer 4 and the pressure-sensitive adhesive layer 3 is not particularly limited, and for example, a pressure-sensitive adhesive is applied to the surface of the skin layer 4 by a known method and heated as necessary. Thereby, the adhesion layer 3 is laminated on the surface of the skin layer 4.

  The surface of the adhesive layer 3 has adhesiveness (surface tackiness).

  The thickness of the pressure-sensitive adhesive layer 3 is, for example, 20 μm or more, preferably 30 μm or more, for example, 100 μm or less, preferably 70 μm or less.

  As will be described in detail later, the skin layer 4 imparts design properties to the adherend when a molded sheet 10 (described later) obtained from the decorative sheet 1 is attached to the adherend (described later). Is provided.

  The skin layer 4 has, for example, a sheet shape extending in the surface direction, and has a substantially rectangular shape in plan view.

  Examples of the skin layer 4 include a resin sheet, a nonwoven fabric, paper, and a metal foil. These can be used alone or in combination of two or more. As the skin layer 4, a resin sheet is preferably used.

  The skin layer 4 is selected so that the shrinkage rate and the softening start temperature are within a predetermined range.

  More specifically, the shrinkage ratio of the skin layer 4 is 0/1000 or more, preferably 1/1000 or more, more preferably 2/1000 or more, still more preferably 4/1000 or more, and 9/1000. Hereinafter, it is preferably 8/1000 or less, more preferably 6/1000 or less.

  The shrinkage rate is measured according to JIS K 7152 (1999) (the same applies hereinafter).

  Further, the softening start temperature of the skin layer 4 is preferably 60 ° C. or higher, more preferably 63 ° C. or higher, still more preferably 65 ° C. or higher, preferably 120 ° C. or lower, more preferably 100 ° C. ° C or lower, more preferably 85 ° C or lower.

  The softening start temperature is a temperature at which deformation starts when the measurement object is heated in an unloaded state, and is measured according to JIS K 7196 (1999).

  Further, as the skin layer 4, a layer having a heat deformation temperature within a predetermined range is preferably selected.

  The heat deformation temperature of the skin layer 4 is, for example, 50 ° C. or more, preferably 52 ° C. or more, more preferably 54 ° C. or more, for example, 200 ° C. or less, preferably 150 ° C. or less, more preferably 100 ° C or lower, more preferably 74 ° C or lower.

  The thermal deformation temperature is a temperature at which deformation starts when the measurement object is heated in a loaded state, and is measured according to ASTM D648.

Specifically, the thermal deformation temperature is determined by raising the temperature of the object to be measured in a state where a load (4.6 kg / cm ² ) determined by the above test method standard is applied, and the amount of deflection is a predetermined value ( 0.26 mm) is shown (the same applies hereinafter).

  In the case where the skin layer 4 is a resin sheet, the shrinkage rate, the softening start temperature, and the thermal deformation temperature vary depending on the type of resin constituting the resin sheet, its structure, and the like.

  Therefore, a resin sheet having a shrinkage rate, a softening start temperature, and a heat distortion temperature in the above ranges is preferably selected as the skin layer 4.

Specifically, as a resin constituting the skin layer 4 (resin sheet), for example, ethylene vinyl acetate (EVA, shrinkage ratio 7/1000 to 9/1000, softening start temperature 89 to 113 ° C., heat distortion temperature 77 to 81 ° C), for example, acrylonitrile-butadiene-styrene copolymer (ABS, shrinkage 0 / 1000-9 / 1000, softening onset temperature 95-105 ° C, heat distortion temperature 95-110 ° C), polystyrene ( PS, shrinkage ratio 4 / 1000-7 / 1000, softening start temperature 95-105 ° C, heat distortion temperature 70-90 ° C, acrylonitrile-styrene copolymer (AS, shrinkage ratio 2 / 1000-7 / 1000, softening start Temperature 110-120 ° C, heat distortion temperature 87-104 ° C, polyvinyl chloride (PVC, shrinkage 1 / 1000-5)
/ 1000, softening start temperature 65-85 ° C., heat distortion temperature 54-74 ° C.) and the like.

  These resins constituting the skin layer 4 can be used alone or in combination of two or more.

  As resin which comprises the skin layer 4, Preferably, crystalline resin is mentioned, More preferably, polyvinyl chloride (PVC) is mentioned.

  If the above resin sheet is used as the skin layer 4, excellent shape retention can be obtained.

  The thickness of the skin layer 4 is, for example, 50 μm or more, preferably 100 μm or more, more preferably 150 μm or more, for example, 500 μm or less, preferably 300 μm or less, more preferably 200 μm or less.

  The thickness of the skin layer 4 is, for example, 100% or more, preferably 200% or more, more preferably 300% or more, for example, 600% or less, preferably, relative to the thickness of the pressure-sensitive adhesive layer 3. It is 500% or less, more preferably 400% or less.

  The thickness of the skin layer 4 is, for example, 10% or more, preferably 20% or more, more preferably 30% or more, for example, 70% or less, with respect to the thickness of the first release layer 2. Preferably, it is 60% or less, more preferably 50% or less.

  The skin layer 4 is laminated on the surface of the adhesive layer 3 by a known method. Thereby, the peeling layer 2 and the skin layer 4 are bonded together through the adhesion layer 3, and the decorating sheet 1 is obtained.

  The second release layer 5 can be obtained by laminating a known adhesive on the shape retention layer 6 by a known method. The adhesive used for the 2nd peeling layer 5 should just be easily peelable from the skin layer 4, although it cannot peel easily from the shape maintenance layer 6. FIG.

  The thickness of the second release layer 5 (total thickness of the shape retaining layer 6 and the adhesive layer) is, for example, 150 μm or more, preferably 200 μm or more, more preferably 350 μm or more, for example, 1000 μm or less, preferably Is 800 μm or less, more preferably 600 μm or less.

  The shape retention layer 6 has, for example, a sheet shape extending in the plane direction (a direction orthogonal to the thickness direction, that is, the left-right direction and the front-rear direction), and has a substantially rectangular shape in plan view.

  Examples of the shape retention layer 6 include a resin sheet, a nonwoven fabric, paper, and a metal foil. These can be used alone or in combination of two or more. As the shape retention layer 6, a resin sheet is preferably used.

  Further, as the shape retention layer 6, one having a shrinkage rate and a softening start temperature in a predetermined range is selected.

  More specifically, the shrinkage ratio of the shape retention layer 6 is 0/1000 or more, preferably 1/1000 or more, more preferably 2/1000 or more, and further preferably 4/1000 or more. 1000 or less, preferably 8/1000 or less, more preferably 6/1000 or less.

  Further, the shrinkage rate of the shape retention layer 6 is preferably approximately the same as the shrinkage rate of the skin layer 4, and the difference between the shrinkage rate of the skin layer 4 and the shrinkage rate of the shape retention layer 6 is, for example, 10 / 1000 or less, preferably 6/1000 or less, more preferably 5/1000 or less, and usually 0/1000 or more.

  The softening start temperature of the shape-retaining layer 6 is preferably 60 ° C. or higher, more preferably 80 ° C. or higher, further preferably 95 ° C. or higher, preferably 120 ° C. or lower, more preferably 110 ° C. Hereinafter, it is 105 degrees C or less more preferably.

  The softening start temperature of the shape retention layer 6 is preferably higher than the softening start temperature of the skin layer 4, and the difference between the softening start temperature of the skin layer 4 and the softening start temperature of the shape retention layer 6 is, for example, 10 ° C. or more. The temperature is preferably 15 ° C. or higher, and is usually 200 ° C. or lower.

  In addition, as the shape retention layer 6, a layer having a heat deformation temperature in a predetermined range is preferably selected.

  The heat retention temperature of the shape retention layer 6 is, for example, 50 ° C. or higher, preferably 85 ° C. or higher, more preferably 95 ° C. or higher, for example, 2000 ° C. or lower, preferably 150 ° C. or lower, more preferably, It is 110 degrees C or less.

  Moreover, it is preferable that the heat deformation temperature of the skin layer 4 is lower than the heat deformation temperature of the shape retention layer 6, and the difference between the heat deformation temperature of the skin layer 4 and the heat deformation temperature of the shape retention layer 6 is, for example, It is 10 ° C or higher, preferably 15 ° C or higher, more preferably 20 ° C or higher, and usually 200 ° C or lower.

  In addition, when the shape retention layer 6 is a resin sheet, the shrinkage rate, the softening start temperature, and the heat deformation temperature vary depending on the type of resin constituting the resin sheet, the structure thereof, and the like.

  Therefore, a resin sheet having a shrinkage rate, a softening start temperature, and a heat distortion temperature in the above ranges is preferably selected as the shape retention layer 6.

  Specifically, as the resin constituting the shape retention layer 6 (resin sheet), for example, ethylene vinyl acetate (EVA, shrinkage ratio 7/1000 to 9/1000, softening start temperature 89 to 113 ° C., thermal deformation temperature 77 to 81 ° C), for example, acrylonitrile-butadiene-styrene copolymer (ABS, shrinkage 0 / 1000-9 / 1000, softening onset temperature 95-105 ° C, heat distortion temperature 95-110 ° C), polystyrene (PS, shrinkage ratio 4 / 1000-7 / 1000, softening start temperature 95-105 ° C, heat distortion temperature 70-90 ° C), acrylonitrile / styrene copolymer (AS, shrinkage ratio 2 / 1000-7 / 1000, softening Start temperature 110-120 ° C, heat distortion temperature 87-104 ° C, polyvinyl chloride (PVC, shrinkage 1 / 1000-5 / 1000, softening start temperature 5 to 85 ° C., heat distortion temperature 54-74 ° C.), and the like amorphous resin such.

  These resins constituting the shape retention layer 6 can be used alone or in combination of two or more.

  More preferably, the resin constituting the shape retention layer 6 is an amorphous resin, and more preferably acrylonitrile / butadiene / styrene resin (ABS). In other words, the shape-retaining layer 6 is preferably a resin sheet made of acrylonitrile / butadiene / styrene resin.

  If the above-described resin sheet is used as the shape retention layer 6, excellent shape retention can be obtained.

  The thickness of the shape retention layer 6 is, for example, 100 μm or more, preferably 150 μm or more, more preferably 300 μm or more, for example, 800 μm or less, preferably 600 μm or less, more preferably 500 μm or less.

  As shown in FIG. 1, the skin layer 4 can further include a coat layer 7.

  For example, the coat layer 7 is disposed on the outermost surface of the skin layer 4 in order to protect the surface of the decorative sheet 1. When the coat layer 7 is provided on the outermost surface of the skin layer 4, the second release layer 5 (shape retention layer 6) is adhered to the surface of the coat layer 7 as shown in FIG. 1. It becomes.

  The coat layer 7 is formed from, for example, a known coating agent.

  Examples of the coating agent include an acrylic coating agent, a urethane coating agent, a fluorine coating agent, and a silicone coating agent.

  These coating agents can be used alone or in combination of two or more.

  The coating agent is preferably a fluorine-based coating.

  The method for laminating the coat layer 7 is not particularly limited. For example, a coating agent may be applied and dried on the surface of the skin layer 4 by a known method. Thereby, the coat layer 7 is laminated on the surface of the skin layer 4. In addition, a coat layer 7 may be formed separately from the skin layer 4, and the coat layer 7 may be laminated on the skin layer 4 with an adhesive or the like.

  For example, a resin film (for example, an acrylic resin film, a urethane resin film, a fluorine resin film, a silicone resin film, etc.) can be used as the coat layer 7. In such a case, the coat layer 7 (resin film) is attached to the skin layer 4 through an adhesive as necessary.

  The thickness of the coat layer 7 is, for example, 20 μm or more, preferably 30 μm or more, for example, 100 μm or less, preferably 70 μm or less.

  Moreover, the thickness (total thickness) of the decorating sheet 1 is 300 micrometers or more, for example, Preferably, it is 400 micrometers or more, for example, is 1000 micrometers or less, Preferably, it is 700 micrometers or less.

  In order to improve the designability, such a decorative sheet 1 can be provided with an arbitrary pattern or pattern by a known method. For example, a design layer (not shown) having an arbitrary pattern or pattern can be interposed between the skin layer 4 and the adhesive layer 3, or between the skin layer 4 and the coat layer 7, The skin layer 4 and the coat layer 7 can be directly processed to give an arbitrary pattern or pattern.

  In such a decorative sheet 1, the second release layer 5 is disposed on the surface of the skin layer 4, and the second release layer 5 includes the shape retention layer 6. Since the rate and the shrinkage rate of the skin layer 4 are both 0/1000 to 9/1000, it can be deformed into an undesired shape or can be prevented from being damaged during molding, and further mounted. Can prevent the skin layer from being damaged.

  The decorative sheet 1 is suitably used in the production of a molded sheet 10 (see FIG. 2D) that has been three-dimensionally processed into a three-dimensional shape. That is, the molded sheet 10 (see FIG. 2D) can be obtained by molding the decorative sheet 1 described above.

  The forming method is not particularly limited, and examples thereof include heat forming such as vacuum forming and hot press forming, and preferably vacuum forming. According to vacuum forming, a molded sheet can be obtained more efficiently.

  Below, the manufacturing method of the shaping | molding sheet | seat by a vacuum forming method is explained in full detail.

  More specifically, in this method, first, as shown in FIG. 2A, the decorative sheet 1 is prepared (preparation step).

  In the preparation step, a vacuum forming die 11 for forming the decorative sheet 1 is prepared.

  The vacuum mold 11 is a known mold. The shape of the vacuum forming die 11 is not particularly limited, but the sticking surface of the decorative sheet 1 (that is, when the decorative sheet 1 sticks to the vacuum forming die 11 as described later, the decorative sheet 1 and the vacuum forming die). It is preferable that the surface (refer FIG. 2C) which the type | mold 11 contacts is the same shape as the sticking surface of the molding sheet 10 in a to-be-adhered body (after-mentioned).

  Next, in this method, the decorative sheet 1 is vacuum formed using the vacuum forming die 11.

  More specifically, in this method, as shown in FIG. 2B, the second release layer 5 side and the first release layer 2 side of the decorative sheet 1 are heated (preheated), respectively.

  The heating temperature (preheating temperature) is appropriately set according to the material of the decorative sheet 1. For example, when the skin layer 4 of the decorative sheet 1 is a resin sheet, heating on the skin layer 4 side (first release layer 2 side) according to the softening start temperature (and heat deformation temperature if necessary) of the resin sheet The temperature is set. Moreover, when the 2nd peeling layer 5 of the decorating sheet 1 is a resin sheet, the heating temperature by the side of the 2nd peeling layer 5 is set according to the softening start temperature (and thermal deformation temperature if necessary) of the resin sheet. Is done.

  More specifically, for example, when the softening start temperature of the skin layer 4 is lower than the softening start temperature of the shape-retaining layer 6, preferably, the heating temperature on the skin side 4 side (first release layer 2 side) ( 2 is set to be lower than the heating temperature on the second release layer 5 side (upper side in FIG. 2).

  In such a case, the heating temperature on the skin layer 4 side (the first release layer 2 side) is, for example, 110 ° C. or more, preferably 120 ° C. or more, more preferably 123 ° C. or more, for example, 140 It is less than 130 ° C, preferably less than 130 ° C, more preferably 127 ° C or less.

  The heating temperature on the second release layer 5 side is, for example, 120 ° C. or higher, preferably 130 ° C. or higher, more preferably 133 ° C. or higher, for example, 150 ° C. or lower, preferably 140 ° C. or lower, More preferably, it is 137 degrees C or less.

  If heating temperature is the said range, the shaping | molding sheet 10 can be obtained more efficiently.

  The heating time is, for example, 60 seconds or longer, preferably 70 seconds or longer, for example, 150 seconds or shorter, preferably 100 seconds or shorter.

  By such heating, the decorative sheet 1 is softened and can be molded.

  Next, in this method, as shown in FIG. 2C, the decorative sheet 1 is vacuum-bonded to the vacuum mold 11 and vacuum-formed.

  More specifically, in this step, the decorative sheet 1 is placed on the vacuum mold 11 and then depressurized by a decompression means (not shown), and the decorating sheet 1 and the vacuum mold 11 are The air in between.

  In vacuum forming, the vacuum forming die 11 is preferably heated to, for example, 70 to 90 ° C. (preferably 80 ° C.).

  As a result, the decorative sheet 1 sticks to the vacuum forming die 11 by atmospheric pressure, and the decorative sheet 1 is deformed along the shape of the vacuum forming die 11 at the contact surface. Thereby, the molded sheet 10 is obtained. At this time, if a vacuum forming die 11 having the same size and shape as the adherend (described later) is used, a molded sheet 10 having the same size and shape as the adherend (described later) is obtained by the above vacuum forming. It is done.

  Thereafter, in this method, the obtained molded sheet 10 is allowed to cool and is removed from the vacuum mold 11 as shown in FIG. 2D. Moreover, an unnecessary part is cut out from the shaping | molding sheet 10 as needed (refer broken line).

  Since the molded sheet 10 thus obtained is obtained using the decorative sheet 1 described above, it is excellent in workability and further excellent in workability at the time of attachment.

  Moreover, according to the manufacturing method of said shaping | molding sheet 10, the shaping | molding sheet 10 can be manufactured efficiently.

  And said molded sheet 10 is affixed on a to-be-adhered body.

  The adherend is not particularly limited and includes, for example, automobile interior and exterior materials such as automobile bumpers, roof panels, instrument panels, door trims, pillars, and the like. Preferably, an automobile exterior material is used.

  As a method for attaching the molded sheet 10, for example, first, the first release layer 2 is released, and then the second release layer 5 (shape retention layer 6) is attached via the adhesive layer 3. The skin layer 4 is pressure-bonded (adhered) to the adherend. Thereafter, the second release layer 5 is peeled off.

  Thereby, the shaping | molding sheet 10 is affixed on a to-be-adhered body, and design property is easily provided with respect to a to-be-adhered body. When the skin layer 4 is pressure-bonded to the adherend, since the second release layer 5 (shape retention layer 6) is attached, it is possible to prevent the skin layer 4 from being scratched and attached. Excellent workability.

  Therefore, the decorative sheet 1 and the molded sheet 10 described above are suitable in various industrial fields that require design properties, specifically, vehicles such as automobiles, and various exterior fields and interior fields such as buildings and furniture. Used for.

  In the above description, the decorative sheet 1 is three-dimensionally formed into a three-dimensional shape by vacuum forming to form a molded sheet. For example, the decorative sheet 1 can be used as the molded sheet 10 without being molded, Furthermore, the decorative sheet 1 can be used as the molded sheet 10 only by plane processing such as cutting without three-dimensional molding.

DESCRIPTION OF SYMBOLS 1 ... Decorating sheet 2 ... 1st peeling layer 3 ... Adhesive layer 4 ... Skin layer 5 ... 2nd peeling layer 6 ... Shape retention layer

Claims (3)

1st peeling layer, the adhesion layer arrange | positioned on the surface of the said 1st peeling layer, the skin layer arrange | positioned on the surface of the said adhesion layer, and the 2nd peeling layer arrange | positioned on the surface of the said skin layer And
The second release layer includes a shape retention layer,
Both the shrinkage rate of the shape retention layer and the shrinkage rate of the skin layer are 0/1000 to 9/1000.   2. The decorative sheet according to claim 1, wherein a softening start temperature of the shape retention layer and a softening start temperature of the skin layer are both 60 ° C. or more and 120 ° C. or less.   The shape retention layer is a resin sheet made of at least one selected from ethylene vinyl acetate, acrylonitrile / butadiene / styrene copolymer, polystyrene, acrylonitrile / styrene copolymer and polyvinyl chloride, Item 3. The decorative sheet according to item 1 or 2.

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