JP2014172659A - Mount for skin pack and skin pack packaging body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mount for a skin pack capable of producing a skin pack packaging body by sucking excellently a skin pack film.SOLUTION: A skin pack packaging has a non-coated paper, a design printing layer provided on the surface of the non-coated paper, and an adhesive layer provided on the surface of the design printing layer. The basis weight of the non-coated paper is 190 g/m-600 g/m, and the adhesive layer is formed of an aqueous emulsion heat-sensitive adhesive, and the air permeability in the thickness direction is 0.10 μm/(Pa S) or higher.

Description

  The present invention relates to a skin pack mount and a skin pack package for holding an object to be packaged using a skin pack film.

The skin pack package includes a mount, a package on the surface of the mount, and a skin pack film including the package and adhered to the surface of the mount.
Such a skin pack package can be manufactured by skin pack packaging. In other words, place the article to be packaged on the surface of the mount, cover it with the softened skin pack film, and vacuum the skin pack film from the back side of the mount (the air between the mount and the skin pack film is sucked from the back side of the mount) The skin pack package can be obtained by suctioning to the side.
As such a skin pack mount, one that allows air to pass through in the thickness direction to the extent that skin pack packaging is possible is used. However, when coated paper is used as the base material for the mount to perform beautiful design printing, it does not have air permeability that allows skin pack packaging.

Patent Document 1 discloses a skin pack mount in which score lines and perforations are formed. Since this board | substrate has the cut line and the perforation formed in the surface, the cut line etc. become a vacuum deaeration port. For this reason, even if coated paper or the like is used as a base material for the mount, the mount has a gas permeability sufficient to allow skin pack packaging. In other words, when coated paper is used, it is necessary to provide a hole that penetrates in the thickness direction, such as a cut line or a perforation, as a vacuum degassing port.
However, when such a cut line or the like is formed, the appearance of the mount is deteriorated.

Japanese Patent Laid-Open No. 2003-20068

  An object of the present invention is to provide a skin pack mount that can produce a skin pack package by sucking a skin pack film well without forming a cut line or the like.

When coated paper is used as described above, a hole such as a cut line must be provided, but if a material having excellent air permeability such as non-coated paper is used, there is no need to actively provide a separate hole.
By the way, in general, an adhesive layer made of a solvent-type adhesive is provided in a solid form on the surface of the skin pack mount in order to adhere the skin pack film.
In this regard, when skin packing is performed using a non-coated paper having a solid adhesive layer made of a solvent-type adhesive, it may not have air permeability, as with coated paper. found. The inventors of the present invention have made extensive studies and found that even if an adhesive layer is provided on non-coated paper, a mount having excellent air permeability can be constructed, and the present invention has been completed.

The skin pack package of the present invention has a non-coated paper, a design printing layer provided on at least one of the front and back surfaces of the non-coated paper, and an adhesive layer provided on the front side of the non-coated paper. , the basis weight of the non-coated ^paper, a ^{190g / m 2 ~600g / m 2} , and the adhesive layer is formed from a water-based emulsion sensitive adhesive, the air permeability in the thickness direction is 0.10μm / (Pa · S) or more.

In a preferable skin pack mount of the present invention, the design printing layer is provided at least on the surface of the non-coated paper, and the design printing layer is interposed between the non-coated paper and the adhesive layer.
In another preferable skin pack mount of the present invention, the water-based emulsion heat-sensitive adhesive contains at least one selected from ethylene-vinyl acetate copolymer resin, polyolefin resin, and a mixture of polyolefin resin and polyester resin. .
In another preferable skin pack mount of the present invention, the aqueous emulsion heat-sensitive adhesive is a heat-sensitive adhesive of a polyolefin resin or a mixture of a polyolefin resin and a polyester resin.
In another preferable skin pack mount of the present invention, the average particle size of the dispersoid in the aqueous emulsion heat-sensitive adhesive is 0.1 μm to 3.0 μm.
In another preferable skin pack mount of the present invention, the water-based emulsion heat-sensitive adhesive contains alcohol.
In another preferable skin pack mount of the present invention, the design printing layer is formed by UV offset printing, and the adhesive layer is formed by a flexo coating method or a gravure coating method.

According to another aspect of the present invention, a skin pack package is provided.
The skin pack package of the present invention comprises the skin pack mount, a packaged object, and a skin pack film bonded to the mount through the adhesive layer, and the space between the mount and the skin pack film. The article to be packaged is held.

  The skin pack mount of the present invention is excellent in air permeability and can suck air well from the back side. By performing skin pack packaging using such a skin pack mount, a skin pack package can be easily produced.

The front view of the mount for skin packs of this invention. The end view cut | disconnected by the II-II line | wire of FIG. The end view cut | disconnected by the III-III line of FIG. The principal part enlarged front view which expanded the IV section of FIG. The expanded sectional view cut | disconnected by the VV line | wire of FIG. The front view of the skin pack package of this invention. Sectional drawing cut | disconnected by the VII-VII line of FIG. Sectional drawing cut | disconnected by the VIII-VIII line of FIG.

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings as appropriate.
The “surface” of a certain member or part refers to the surface on the front side (side closer to the viewer) when the skin pack mount is viewed from the front (direction in which the surface of the non-coated paper is directly viewed) shown in FIG. The “back surface” of a member or part refers to the opposite surface. The shape in plan view is a shape when viewed from the vertical direction with respect to the front surface or back surface of the non-coated paper.
In addition, the description “PPP to QQQ” means “PPP or more and QQQ or less”.
Further, in the present invention, “mount” is a member that holds the package in cooperation with the skin pack, and “paper” of the mount has a limited meaning that “the mount is made of paper”. Do not mean. It should be noted that the specific dimensions and scale ratios of each figure are different from the actual ones.

1 to 3 show a skin pack mount 1 of the present invention. The skin pack mount 1 includes a non-coated paper 2 as a base material, a design printing layer 3 provided on the surface of the non-coated paper 2, and an adhesive layer 4 provided on the surface of the design printing layer 3. Have. The adhesive layer 4 is provided in order to adhere the skin pack film to the mount 1. The skin pack mount 1 has an air permeability in the thickness direction of 0.10 μm / (Pa · S) or more, preferably 0.20 μm / (Pa · S) or more.
Here, in this specification, the air permeability refers to a value measured according to ISO 5636-5: 2003.

The non-coated paper 2 is a flat sheet having flexibility, and has air permeability in the thickness direction.
The non-coated paper 2 is a base paper that does not substantially have such a coating layer, unlike a coated paper in which a coating layer for improving printability is provided on the surface of the base paper. However, the non-coated paper 2 of the present invention may be provided with a desired layer such as an overcoat layer on the surface of the base paper as long as the air permeability of the non-coated paper is not substantially inhibited.
Examples of the base paper include high-quality paper obtained by wet papermaking, plain paper, or cardboard. Examples of the fiber include wood pulp; non-wood pulp such as bagasse and kenaf; synthetic fibers or semi-synthetic fibers such as polyolefin and polyester; and regenerated fibers thereof.
The basis weight of the non-coated paper 2 is, for ^{example, 190g / m 2 ~600g / m 2} , ^{preferably, 250g / m 2 ~500g / m} 2. When the basis weight is less than 190 g / m ² , the mechanical strength becomes insufficient. On the other hand, when the basis weight exceeds 600 g / m ² , the air permeability may be insufficient. Since the design printing layer 3 and the adhesive layer 4 are provided on the surface of the non-coated paper 2, the non-coated paper 2 having a larger air permeability in the thickness direction than that of the mount 1 is used. In order to construct the mount 1 having an air permeability of 0.10 μm / (Pa · S) or higher, an uncoated paper 2 having an air permeability greater than the air permeability is used. The air permeability in the thickness direction of the non-coated paper 2 is not particularly limited as long as it is larger than that of the backing paper 1. For example, it is 0.20 μm / (Pa · S) or more, and preferably 0.30 μm / (Pa · S). It is above, More preferably, it is 0.40 micrometer / (Pa * S) or more.

The base paper of the non-coated paper 2 is a sheet that allows air to pass through fine gaps in the fibers. That is, the non-coated paper 2 has air permeability due to the inherent property of the non-coated paper itself, without positively forming holes penetrating in the thickness direction such as cut lines and perforations.
Since the cut line or perforation is not formed on the skin pack mount 1 of the present invention, the appearance does not deteriorate. However, the present invention provides a skin pack mount having air permeability without forming the cut lines or perforations, and no holes such as the cut lines or perforations are formed. It is not limited to a skin pack mount. Therefore, for example, for the purpose of improving the unsealing property, a hole penetrating in the thickness direction of the non-coated paper such as the cut line or the perforation is formed in the skin pack mount 1 of the present invention as necessary. Also good.

A desired design (design) is applied to the surface of the non-coated paper 2 by a conventionally known printing method (design printing layer 3 is formed). The design printing layer 3 may be provided over the entire surface of the non-coated paper 2 or may be provided in a partial region of the surface of the non-coated paper 2. In the illustrated example, the design print layer 3 is provided over the entire surface of the non-coated paper 2. In addition, the design printing layer may be provided also in the back surface of the non-coated paper 2 as needed. Further, the design print layer may be provided only on the back surface of the non-coated paper 2. The design printing layer 3 is preferably provided on at least the surface of the non-coated paper 2, and in this case, the design printing layer 3 is interposed between the non-coated paper 2 and the adhesive layer 4.
The design print layer 3 is composed of an ink adhering portion 31 where applied ink is solidified.
The design print layer 3 is usually formed by a printing technique such as UV offset printing, gravure printing, flexographic printing, or preferably UV offset printing. The design printed layer 3 formed by UV offset printing appears to be composed of a solid ink adhering portion where the surface (front surface or back surface) of the non-coated paper does not appear from a macro viewpoint such as visual observation. Printing appears very beautifully, but from a microscopic point of view such as an electron microscope, it is composed of countless dot-shaped ink adhering portions 31 that are densely scattered on the surface of the non-coated paper 2. Partially appears inside the design printing layer 3. Thus, according to UV offset printing, both the beauty of the design and air permeability can be provided.

The innumerable dot-shaped ink adhering portions 31 are formed by intermittently supplying solidified ink in the formation region of the design printing layer 3 as shown in FIGS. 4 and 5 shown for reference from a microscopic viewpoint. The state that is attached. In other words, the design printing layer 3 including the innumerable dot-shaped ink adhering portions 31 has a sea-island structure in which the surface of the non-coated paper 2 is the sea and the ink adhering portions 31 are the innumerable islands in plan view. .
As the printing ink, a conventionally known ink suitable for each printing method can be used. For example, when the design print layer 3 is formed by UV offset printing, UV curable ink is used.
The thickness of the design printing layer 3 (solidified ink layer) is not particularly limited, but is usually 1 μm to 5 μm. The thickness of the design print layer 3 means the maximum thickness.

Further, an adhesive layer 4 made of an aqueous emulsion heat-sensitive adhesive is provided on the surface of the design print layer 3 in order to adhere the skin pack film. The adhesive layer 4 is formed by applying the aqueous emulsion heat-sensitive adhesive to the surface of the design printing layer 3 and drying it. The adhesive layer 4 is stacked on the design printing layer 3 after being formed, but the adhesive layer 4 is provided on the surface of the non-coated paper 2 in a portion where the design printing layer 3 does not exist. It can be said that.
The adhesive layer 4 is provided over the entire surface of the mount 1 or substantially the entire surface thereof. The almost entire surface of the mount 1 means the surface of the mount 1 excluding one or more corners of the mount 1. By not providing an adhesive layer on one or more corners of the mount 1, the skin pack film does not adhere to the corners. The corner portion that is not bonded can be used as an opening start point of the skin pack package. That is, in the skin pack package, the skin pack film corresponding to the corners of the non-coated paper 2 can be picked and the skin pack film can be easily peeled off.

The aqueous emulsion heat-sensitive adhesive is an adhesive in which resin particles 41 as a dispersoid are dispersed in water. As shown in FIGS. 4 and 5, the adhesive layer 4 is configured by stacking and solidifying a plurality of resin particles 41 in the aqueous emulsion heat-sensitive adhesive. Although the thickness of the said adhesive bond layer 4 is not specifically limited, Usually, they are 5 micrometers-25 micrometers. The thickness of the adhesive layer 4 means its maximum thickness.
The resin particles contained in the water-based emulsion heat-sensitive adhesive before application are independent of each other, but after they are applied and solidified, the interface between the adjacent resin particles stacked disappears. In this respect, in FIGS. 4 and 5, in order to make it easy to understand that the adhesive layer 4 is formed of the solidified resin particles 41 in the aqueous emulsion heat-sensitive adhesive, the contours of the individual resin particles 41 are described for convenience. Note that it represents.

  The adhesive layer 4 can be usually formed by a known method such as a flexo coating method, a gravure coating method, a bar coating method, a roll coating method, a curtain coating method, a spray coating method, a die coating method, or a brush coating, preferably The film is formed by a flexo coat method or a gravure coat method. According to the flexo-coating method or the gravure coating method, the substantially uniform adhesive layer 4 can be easily formed as a continuous layer that spreads in a solid form without any gaps by applying an aqueous emulsion heat-sensitive adhesive to the region where the adhesive layer is to be formed. it can.

The adhesive layer 4 made of the water-based emulsion heat-sensitive adhesive does not exhibit tackiness at room temperature, but develops tackiness upon heating. The aqueous emulsion heat-sensitive adhesive contains a base polymer and, if necessary, a tackifier and various additives. The base polymer refers to the largest number of resin components contained in the aqueous emulsion heat-sensitive adhesive.
Examples of the base polymer include thermoplastic resins such as ethylene vinyl acetate copolymer resins, polyolefin resins, polyester resins, acrylic resins, and styrene resins. These can be used alone or in combination of two or more. Since the air permeability of the backing paper 1 is improved, the base polymer is preferably at least one selected from ethylene-vinyl acetate copolymer resin, polyolefin resin, and a mixture of polyolefin resin and polyester resin, and further blocking. A polyolefin resin or a mixture of a polyolefin resin and a polyester resin is more preferable because an adhesive layer that hardly occurs and has excellent adhesive strength can be formed.

Although it does not specifically limit as said ethylene vinyl acetate copolymer type resin, It is preferable that ethylene content is 5 weight%-60 weight%, and it is more preferable that it is 15 weight%-35 weight%. Further, the ethylene vinyl acetate copolymer resin preferably has a minimum film formation degree of -5 ° C to 20 ° C, more preferably -5 ° C to 5 ° C.
Although it does not specifically limit as said polyolefin resin, For example, homopolymer of alpha olefins, such as ethylene, propylene, 1-butene, 4-methyl-1- pentene; Ethylene-alpha-olefin copolymer, propylene- Copolymers such as α-olefin copolymers; Copolymers of cyclic olefins and α-olefins; Unsaturated carboxylic acids such as ethylene-acrylic acid ester-maleic acid, olefin compounds, and (meth) acrylic acid three-dimensional A copolymer; and the like.
Examples of the polyester resin include known polycondensates of polyvalent carboxylic acid and alcohol.
Although it does not specifically limit as said acrylic resin, For example, a poly (meth) acrylic acid ester, a styrene- (meth) acrylic acid ester copolymer, a vinyl acetate (meth) acrylic acid ester copolymer etc. are mentioned. .
The styrenic resin is not particularly limited. For example, a styrene homopolymer; a copolymer of a styrene monomer and a diene monomer, such as a styrene-butadiene block copolymer, And a styrene copolymer such as a copolymer comprising a monomer and a (meth) acrylic acid ester monomer.

  Examples of the tackifier include rosin resins, terpene resins, petroleum resins, coumarone-indene resins, and phenol resins. In particular, rosin resins and terpene resins are preferable, and terpene resins such as hydrogenated terpene resins are particularly preferable. A tackifier can be used individually by 1 type or in combination of 2 or more types.

The additive is not particularly limited, and examples thereof include alcohol, wax, stabilizer, modifier, and emulsifier. In particular, the aqueous emulsion heat-sensitive adhesive preferably contains alcohol. When the design print layer 3 is formed by UV offset printing, the surface of the design print layer 3 usually tends to be hydrophobic, and thus it may be difficult to properly apply the aqueous emulsion heat-sensitive adhesive thereon. Therefore, by adding alcohol to the water-based emulsion heat-sensitive adhesive, the affinity between the water-based emulsion heat-sensitive adhesive and the surface of the design printing layer 3 is improved, so that the water-based emulsion heat-sensitive adhesive can be satisfactorily applied.
The alcohol is not particularly limited, and examples thereof include linear or branched alcohols having 1 to 6 carbon atoms such as methanol, ethanol, butanol, and isopropyl alcohol, and linear or branched higher alcohols having 7 to 20 carbon atoms. And polyhydric alcohols such as ethylene glycol and glycerin. Since the wettability with respect to the design printing layer 3 of an aqueous emulsion heat sensitive adhesive becomes especially favorable, at least any one of a C1-C6 linear or branched alcohol and a polyhydric alcohol is preferable, C1-C1 More preferred are 6 linear or branched alcohols.

  The aqueous emulsion heat-sensitive adhesive may contain an emulsifier, but preferably it is substantially free of an emulsifier. If an emulsifier is contained, the adhesive strength of the adhesive layer to the skin pack film may be reduced.

  The aqueous emulsion heat-sensitive adhesive is used in a state in which the base polymer and, if necessary, additives such as a tackifier and alcohol are dispersed in water or an aqueous solvent by a known method. An emulsion-type heat-sensitive adhesive is a dispersion in which a resin component (solid content) is dispersed in a solvent in the form of particles. The solid content concentration of the emulsion-type heat-sensitive adhesive is, for example, preferably 20% to 70% by weight, and more preferably 20% to 60% by weight. If the solid content concentration exceeds 70% by weight, the coating workability is inferior, and if it is less than 20% by weight, a lot of time is required to dry the aqueous emulsion heat-sensitive adhesive after coating.

  The average particle size of the dispersoid (resin particles) in the aqueous emulsion heat-sensitive adhesive is, for example, 0.1 μm to 3.0 μm, preferably 0.3 μm to 2.0 μm, and more preferably 0.8 μm. 5 μm to 1.0 μm. By using the water-based emulsion heat-sensitive adhesive having the resin particles 41 having such an average particle diameter, it is possible to form the adhesive layer 4 having excellent adhesion strength to the skin pack film. The resin particles 41 having a particle diameter as described above can be obtained by appropriately setting the type of the base polymer, the solvent, etc., the solid content concentration, and the like. The average particle diameter can be measured using a laser diffraction / scattering particle size distribution measuring apparatus.

More specifically, the aqueous polyolefin resin dispersion described in the claims of WO02 / 055598 (International publication of PCT / JP02 / 00162) may be used as the aqueous emulsion heat-sensitive adhesive containing the polyolefin resin. preferable. This aqueous dispersion is described in the international publication, page 5, line 23 to page 21, line 11 and claims. In this specification, the description of the international publication is not transcribed for the sake of space, but with the indication of the cited part of the international publication, the description is regarded as being described in the specification as it is, The description can be taken in as it is.
In addition, as an aqueous emulsion heat-sensitive adhesive containing a mixture of the polyolefin-based resin and the polyester-based resin, an aqueous solution described in [0014] to [0050] of Japanese Patent Application Laid-Open No. 2004-9504 (Japanese Patent Application No. 2002-165655). It is preferred to use a dispersion. In this aqueous dispersion, an aqueous dispersion of a polyolefin resin (A) composed of an unsaturated carboxylic acid or an anhydride thereof, an olefin compound, and a (meth) acrylic ester and an anionic group of 20 to 700 (equivalent / 106 g) aqueous dispersion of polyester resin (B) mixed so that the mass ratio of the resin content in each aqueous dispersion is (A) / (B) = 90 / 10-20 / 80 And does not contain an emulsifier. In the present specification, the description of the publication of the application is not transcribed for the sake of space, but with the indication of the cited part of the application gazette, the description is regarded as described in the present specification as it is, The description can be taken in as it is.
A commercially available product may be used as the water-based emulsion heat-sensitive adhesive containing the polyolefin resin or a mixture of a polyolefin resin and a polyester resin. Examples of commercially available products include Arrow Base (registered trademark) SE-1200, SE-1230, and SB-1200 manufactured by Unitika Ltd., and these examples do not include an emulsifier.

Skin pack mount 1 of the present invention, the non-coated paper 2 having a basis weight of ^{190g / m 2 ~600g / m 2} , the adhesive layer 4 consisting of an aqueous emulsion sensitive adhesive is formed. Since the air permeability of the skin pack mount 1 is 0.10 μm / (Pa · S) or more, the skin pack mount 1 of the present invention has air permeability that allows skin pack packaging.

The present invention provides a skin pack mount 1 having a specific combination structure of the non-coated paper 2, the design printing layer 3, and the adhesive layer 4 using the water-based emulsion heat-sensitive adhesive. In general, when the adhesive layer is formed in a solid form on non-coated paper, the air permeability cannot be secured to the extent that skin pack packaging is possible. However, the mount 1 according to a specific combination as in the present invention can be skin pack packaged. It is so permeable. The reason is not clear, but the present inventors presume as follows.
As described above, since the water-based emulsion heat-sensitive adhesive is an adhesive in which the resin particles 41 that are dispersoids are dispersed in water, the adhesive obtained by applying and drying the resin particles 41 by a flexo coating method or a gravure coating method. The layer 4 is configured by stacking a plurality of resin particles 41 and solidifying them. Since the adhesive layer 4 at this time is composed of a portion where the resin particles 41 are relatively overlapped and a portion where the resin particles 41 are overlapped relatively little, it is considered that the thickness of the adhesive layer 4 is not uniform. . That is, after the solvent in the water-based emulsion heat-sensitive adhesive is volatilized by drying and the resin particles 41 are solidified, the resin particles 41 are randomly stacked as described above. It appears that a discontinuous layer having a thickness is appropriately formed (see FIGS. 2 to 5). In addition, the defect | deletion part 5 means the location where the resin particle 41 solidified after drying does not exist in the adhesive bond layer formation area | region where the water-based emulsion heat sensitive adhesive was apply | coated. 2 and 3, it should be noted that the adhesive layer, the design printing layer, and the defective portion are conceptually represented.

  On the other hand, as described above, the design printing layer 3 is composed of innumerable dot-shaped ink adhering portions 31, and between the adjacent ink adhering portions 31, a paper exposed surface where the surface of the non-coated paper 2 is exposed and It has become. Therefore, it seems that the randomly solidified resin particles 41 constituting the adhesive layer 4 are mainly adhered to the surface of the ink adhering portion 31 and further adhered to a part of the surface of the non-coated paper 2. Further, it is naturally conceivable that the resin particles 41 do not adhere to the entire surface of all the ink adhering portions 31 and that the resin particles 41 do not adhere to a part of some of the ink adhering portions 31. At this time, the surface of the non-coated paper 2 is exposed in many defective portions 5 (however it is unknown), that is, the non-coated paper 2 corresponding to the defective portions 5 is printed on the design printing layer 3 (ink adhesion). Part 31) and the adhesive layer 4 (resin particles 41). The air permeability of the backing paper 1 at the missing portion 5 is substantially equal to the air permeability of the non-coated paper itself. In the skin pack mount 1 of the present invention, the air permeability of the non-coated paper 2 is reduced at the portion where the resin particles 4 constituting the adhesive layer 4 are adhered, while the air permeability of the non-coated paper 2 is substantially reduced. It has a part that is not. The skin pack base sheet 1 of the present invention is mixed with the portion having the reduced air permeability and the portion having substantially the air permeability of the non-coated paper 2 as a whole so that the skin pack can be wrapped as a whole. It is presumed that the skin can be satisfactorily packed even if it has temper and does not have a hole such as a cut line that becomes a vacuum deaeration port.

  The skin pack mount 1 is usually stored and transported in a state where a large number of sheets are stacked, and when the skin pack package is manufactured, the skin pack mount 1 is taken out one by one. In a state where a large number of sheets are stacked, the back surface of one skin pack mount 1 is in contact with the surface of the adhesive layer 4 of the other skin pack mount 1. In this regard, when the adhesive layer 4 is formed from an aqueous emulsion heat-sensitive adhesive having a polyolefin resin as a base polymer, the surface of the adhesive layer 4 becomes slippery. For this reason, it becomes difficult for the stacked skin pack mounts 1 to block through the adhesive layer 4, and the skin pack mount 1 can be easily taken out from the stacked layers.

The skin pack mount 1 of the present invention is used in the same manner as before.
The object to be packaged is placed on the surface of the skin pack mount 1 (the surface of the adhesive layer 4), and the surface of the mount 1 is covered with a softened skin pack film so as to cover the object to be packaged. Vacuum from the back side. By suction, air between the mount 1 and the skin pack film passes in the thickness direction of the mount 1 and is taken out to the back side of the mount 1, and the skin pack film adheres to the surface of the adhesive layer 4 of the mount 1. . The skin pack film is usually heated and softened before being placed on the mount 1, and the adhesive layer 4 is activated by the heat of the skin pack film so that the skin pack film adheres to the adhesive layer 4. However, in the case of using a sufficiently soft skin pack film without heating, it is necessary to heat and activate the adhesive layer 4 in advance.

  As the skin pack film, a conventionally known film can be used on condition that the skin pack film can be adhered to the adhesive layer 4. As the skin pack film, a colorless transparent or colored transparent single layer or multilayer resin film is usually used. As the skin pack film, a known film having various functions such as gas barrier properties and light shielding properties can be used as necessary. Examples of the material of the skin pack film include thermoplastic resins such as polyolefin resins, polyester resins, polyamide resins, ethylene vinyl acetate copolymer resins, and soft vinyl chloride resins. The film includes what is generally called a sheet. The thickness of the skin pack film is not particularly limited, and is, for example, 30 μm to 300 μm, preferably 50 μm to 250 μm.

  Examples of the polyolefin resin include linear resins such as linear low density polyethylene, low density polyethylene, medium density polyethylene, and high density polyethylene, polypropylene resins such as polypropylene, propylene-ethylene copolymers, and ethylene-acetic acid. Various copolymers such as vinyl copolymers, ionomer resins, ethylene- (meth) acrylic acid copolymers, ethylene- (meth) acrylic acid-unsaturated carboxylic acid ester copolymers, and the like, preferably polyethylene Resin, more preferably linear low density polyethylene. These may be used alone or in combination of two or more.

  Examples of the polyamide resin include aliphatic polyamide polymers such as nylon 6, nylon 66, nylon 69, nylon 610, nylon 612, nylon 11 and nylon 12, nylon 6-66 (a copolymer of nylon 6 and nylon 66). And the like, and the like, and the like, and aliphatic polyamide copolymers such as nylon 6-10, nylon 6-12, nylon 6-69, nylon 6-610, nylon 66-69, and the like are preferable. A polyamide copolymer, more preferably nylon 6-66, nylon 6-10, or nylon 6-12. These may be used alone or in combination of two or more.

  Typical examples of the polyester resin include poly (ethylene terephthalate), poly (butylene terephthalate), poly (ethylene terephthalate / isophthalate), poly (ethylene glycol / cyclohexane dimethanol / terephthalate), and the like. As a copolymerization component to these polymers, diols such as ethylene glycol, butylene glycol, cyclohexanedimethanol, neopentyl glycol, pentanediol, or isophthales, benzophenone dicarboxylic acid, diphenylsulfone dicarboxylic acid, diphenylmethane dicarboxylic acid, propylene bis ( Phenylcarboxylic acid), diphenyl oxide dicarboxylic acid, oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid Azelaic acid, Sabachin acids include those obtained by incorporating dicarboxylic acids such as diethyl succinate.

  In the present invention, it is preferable to use a multi-layer film having at least two resins having different melting points as the skin pack film, and in particular, a high melting point resin (that is, a resin having heat resistance) is used as the intermediate layer. A film composed of two or three layers having a resin having a lower melting point than the resin of the intermediate layer as front and back layers is particularly preferable. The strength of the skin pack film is improved by laminating a resin having higher heat resistance to a low melting point resin that contributes to adhesion to the mount. Furthermore, if the skin pack film is composed of two types and three layers, curling due to heating and cooling is less likely to occur, and the finish of the skin pack package can be improved.

  Examples of the film composed of two types and three layers include, for example, polyolefin resin (low melting point) / polyolefin resin (high melting point) / polyolefin resin (low melting point), polyolefin resin / polyamide resin / polyolefin resin. And a film having a layer structure composed of polyolefin resin / polyester resin / polyolefin resin, etc., preferably polyolefin resin / polyamide resin / polyolefin resin. Among these, a two-layer / three-layer film in which the polyolefin resin is either linear low density polyethylene or low density polyethylene and the polyamide resin is an aliphatic polyamide copolymer is particularly preferable.

Moreover, the said package is not specifically limited, Cosmetics, household goods, stationery, a quasi-drug, a pharmaceutical, etc. are mentioned.
As shown in FIGS. 6 to 8, the skin pack package thus obtained is a skin bonded to the mount 1 through the skin pack mount 1, the package 6, and the adhesive layer 4. A pack film 7, and the package 6 is held between the mount 1 and the skin pack film 7.

  Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples. However, the present invention is not limited to the following examples.

<Example 1>
[Production of skin pack mount]
Polyolefin water-based emulsion heat-sensitive adhesive (manufactured by Unitika Ltd., “Arrowbase (registered trademark) SB-1200”), water is added at room temperature (23 ° C.) to adjust the viscosity (Zahn Cup No. 4, 18 Second), an adhesive adjusting solution was obtained.
UV curable ink on the entire surface of non-coated paper (“LOVE NATURAL (registered trademark) Dream Kent” manufactured by Gojo Paper Co., Ltd.) having a basis weight of 420 g / m ^{2 and} having a length × width = 387.0 mm × 259.5 mm. A design printing layer was formed by UV offset printing of “Best Cure (registered trademark) UV HY-BD magenta color” manufactured by T & K Toka Co., Ltd. The adhesive adjusting liquid was applied to the entire surface of the design printing layer using a bar coater (No. 7) (coating amount: 16 g / m ² ), and this was naturally dried for 30 minutes, whereby Example 1 A skin pack mount according to the above was prepared.

[Measurement of air permeability]
The skin pack mount of Example 1 was cut into length × width = 50 mm × 50 mm to prepare a test piece. The air permeability of this test piece was measured using a Gurley type densometer (manufactured by Toyo Seiki Co., Ltd.) according to the test method specified in ISO 5636-5: 2003. The results are shown in Table 1.
In this method, the time (t seconds) required for 100 ml of air to pass through a test piece having a surface area of 642 mm ² is measured, and P obtained by substituting into the formula: P = (135.3 / t) Is used to display the air permeability. It shows that air permeability is so high that the P is large.

[Surface friction]
The skin pack mount of Example 1 was cut into length × width = 80 mm × 100 mm to prepare a test piece. The surface friction coefficient (surface on which the adhesive layer is provided) of this test piece was measured according to JIS K7125 using a desktop precision universal testing machine (manufactured by Shimadzu Corporation, “Autograph AGS-50G”). did. The results are shown in Table 1. The numerical value of the surface friction coefficient is the value of the static friction coefficient / dynamic friction coefficient, and the evaluation in Table 1 indicates that the mounts can be conveyed one by one without any inconvenience from the stack of mounts stacked on the processing machine. The case where it was possible and the case where it was not possible was rated as x. In view of the conveyance situation, it can be determined that the static friction coefficient is preferably 0.60 or less and the dynamic friction coefficient is 0.50 or less.

[Warpage evaluation test]
The skin pack mount immediately after drying the adhesive adjusting liquid was left at room temperature (about 23 ° C.) for 30 minutes, and the presence or absence of warpage of the mount was visually evaluated. The results are shown in Table 1.

[Adhesion test]
A skin pack film (linear low-density polyethylene / aliphatic having a thickness of 60 μm) softened by heating at 350 ° C. for 10 seconds while sucking from the back side of the skin pack mount of Example 1 Two types and three layers of polyethylene film composed of polyamide copolymer / linear low density polyethylene (manufactured by Tamapoly Co., Ltd., “Multitron (registered trademark) ZPX111”) was applied. As a result of the suction, air between the mount and the skin pack film was drawn, whereby the skin pack film was in close contact with the adhesive layer of the mount and a laminate composed of the mount and the skin pack film was produced. This laminate was cut into length × width = 15 mm × 70 mm to prepare a test piece.
Of these test pieces, only a stretch film was used, using a tabletop precision universal testing machine (manufactured by Shimadzu Corporation, “Autograph AGS-50G”) at a normal temperature (about 23 ° C.) in a 180 ° direction at 200 mm / min. The skin pack film was peeled off from the backing sheet, and the average tensile load (N) from the start to the end of peeling of the film was measured. The results are shown in Table 1.

<Example 2>
A skin pack was prepared in the same manner as in Example 1 except that an ethylene-vinyl acetate resin aqueous emulsion thermal adhesive (manufactured by Konishi Co., Ltd., “Bond SP3055”) was used instead of the thermal adhesive in Example 1. A mounting board was prepared, and its air permeability, surface friction coefficient, warpage, and tensile strength were measured in the same manner. The results are shown in Table 1.
<Example 3>
Instead of the heat-sensitive adhesive of Example 1, an ethylene-vinyl acetate resin aqueous emulsion heat-sensitive adhesive (Asai Bussan Co., Ltd., “SP-821”) was used in the same manner as in Example 1, A skin pack mount was prepared, and the air permeability, surface friction coefficient, warpage, and tensile strength were similarly measured. The results are shown in Table 1.
<Example 4>
Instead of the heat-sensitive adhesive of Example 1, an acrylic resin water-based emulsion heat-sensitive adhesive (Asai Bussan Co., Ltd., “Skin Pack Adhesive SP-5400”) was used. Then, a skin pack mount was prepared, and similarly, its air permeability, surface friction coefficient, warpage, and tensile strength were measured. The results are shown in Table 1.
<Comparative example>
Instead of the heat-sensitive adhesive of Example 1, a solvent type adhesive for blister packs (manufactured by Arakawa Paint Industry Co., Ltd., “Blister Pack No. 5508NP”, a solvent type adhesive of vinyl chloride-vinyl acetate copolymer) is used. Except for the above, a mount was prepared in the same manner as in Example 1, and the air permeability and warpage thereof were similarly measured. The results are shown in Table 1.
However, the mount produced in the comparative example cannot be used for the skin pack because air does not substantially permeate as shown in Table 1. Therefore, the surface friction coefficient and the tensile strength were not measured for the mount of the comparative example.

<Example 5>
A cylindrical article is placed as an article to be packaged on the adhesive layer of the skin pack mount in Example 1, and softened by heating at 350 ° C. for 10 seconds while sucking from the back side of the skin pack mount. Skin pack film (a two- and three-layer polyethylene film composed of a linear low density polyethylene / aliphatic polyamide copolymer / linear low density polyethylene with a thickness of 60 μm. (Registered trademark) ZPX111 "). By the suction, air between the mount and the skin pack film was pulled out, so that the skin pack film adhered to the adhesive layer of the mount. In this way, a skin pack package was produced.
When the obtained skin pack package was visually observed, the skin pack film was in close contact with the mount substantially uniformly without unevenness, and the finish was good.

[Evaluation]
The skin pack mount of Example 1 is excellent in air permeability, and a good skin pack package can be produced as in Example 5. Since the skin pack mounts of Examples 2 to 4 have the same air permeability as that of Example 1, it is considered that a good skin pack package can be obtained for these.
Moreover, although the mount for skin packs of Example 1 is excellent also in the adhesiveness with respect to a skin pack film (refer tensile strength), the adhesives of the mounts of Example 3 and Example 4 were inferior. This difference is presumed to be caused by the fact that the heat-sensitive adhesive used in Example 1 contains no emulsifier, whereas the heat-sensitive adhesive used in Example 3 and Example 4 contains an emulsifier. The
Furthermore, since the skin pack mount of Example 1 has a small coefficient of surface friction, even if a plurality of sheets are stacked, they can be easily pulled out one by one.

  DESCRIPTION OF SYMBOLS 1 ... Mount for skin packs, 2 ... Non-coated paper, 3 ... Design printing layer, 31 ... Ink adhesion part, 4 ... Adhesive layer, 41 ... Resin particle, 5 ... Defect part, 6 ... Packaged object, 7 ... Skin pack Film, 10 ... Skin pack package

Claims (8)

A non-coated paper, a design printing layer provided on at least one of the front and back surfaces of the non-coated paper, and an adhesive layer provided on the front side of the non-coated paper,
The basis weight of the non-coated ^paper, a ^{190g / m 2 ~600g / m 2} , and the adhesive layer is formed from a water-based emulsion sensitive adhesive,
A skin pack mount having an air permeability in the thickness direction of 0.10 μm / (Pa · S) or more.   The skin pack mount according to claim 1, wherein the design printing layer is provided at least on a surface of the non-coated paper, and a design printing layer is interposed between the non-coated paper and an adhesive layer.   3. The skin pack according to claim 1, wherein the aqueous emulsion heat-sensitive adhesive contains at least one selected from ethylene-vinyl acetate copolymer-based resins, polyolefin-based resins, and mixtures of polyolefin-based resins and polyester-based resins. Mount.   The skin-pack base sheet according to any one of claims 1 to 3, wherein the water-based emulsion heat-sensitive adhesive is a heat-sensitive adhesive of a polyolefin resin or a mixture of a polyolefin resin and a polyester resin.   The mount for skin packs as described in any one of Claims 1 thru | or 4 whose average particle diameter of the dispersoid in the said water-based emulsion heat-sensitive adhesive is 0.1 micrometer-3.0 micrometers.   The mount for skin packs as described in any one of Claims 1 thru | or 5 in which the said water-based emulsion heat-sensitive adhesive contains alcohol. The design printing layer is formed by UV offset printing,
The skin pack mount according to any one of claims 1 to 6, wherein the adhesive layer is formed by a flexo coating method or a gravure coating method.   It has the mount for skin packs as described in any one of Claims 1 thru | or 7, the to-be packaged object, and the skin pack film adhere | attached on the mount through the said adhesive bond layer, The said mount and skin pack A skin pack package in which the package is held between films.

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