WO2017187766A1 - Laminated film for skin pack packaging, packaging body, and manufacturing method for packaging body - Google Patents

Laminated film for skin pack packaging, packaging body, and manufacturing method for packaging body Download PDF

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Publication number
WO2017187766A1
WO2017187766A1 PCT/JP2017/007741 JP2017007741W WO2017187766A1 WO 2017187766 A1 WO2017187766 A1 WO 2017187766A1 JP 2017007741 W JP2017007741 W JP 2017007741W WO 2017187766 A1 WO2017187766 A1 WO 2017187766A1
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WO
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Prior art keywords
film
skin pack
pack packaging
bottom material
laminated film
Prior art date
Application number
PCT/JP2017/007741
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French (fr)
Japanese (ja)
Inventor
稲垣　宏道
高橋　盛
Original Assignee
株式会社彫刻プラスト
稲垣　宏道
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Application filed by 株式会社彫刻プラスト, 稲垣　宏道 filed Critical 株式会社彫刻プラスト
Priority to JP2018514156A priority Critical patent/JPWO2017187766A1/en
Publication of WO2017187766A1 publication Critical patent/WO2017187766A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B11/00—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material
    • B65B11/50—Enclosing articles, or quantities of material, by disposing contents between two sheets, e.g. pocketed sheets, and securing their opposed free margins
    • B65B11/52—Enclosing articles, or quantities of material, by disposing contents between two sheets, e.g. pocketed sheets, and securing their opposed free margins one sheet being rendered plastic, e.g. by heating, and forced by fluid pressure, e.g. vacuum, into engagement with the other sheet and contents, e.g. skin-, blister-, or bubble- packaging
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/06—Interconnection of layers permitting easy separation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B11/00—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material
    • B65B11/58—Applying two or more wrappers, e.g. in succession
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B7/00—Closing containers or receptacles after filling
    • B65B7/16—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons
    • B65B7/162—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons by feeding web material to securing means
    • B65B7/164—Securing by heat-sealing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D65/38—Packaging materials of special type or form
    • B65D65/40—Applications of laminates for particular packaging purposes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/28—Articles or materials wholly enclosed in composite wrappers, i.e. wrappers formed by associating or interconnecting two or more sheets or blanks
    • B65D75/30—Articles or materials enclosed between two opposed sheets or blanks having their margins united, e.g. by pressure-sensitive adhesive, crimping, heat-sealing, or welding

Definitions

  • the present invention relates to a laminated film for skin pack packaging, a package, and a method for producing the package.
  • Skin pack packaging is a packaging method that allows a film to be closely attached to an object to be packaged without using a mold, and is used in many fields such as food, stationery and miscellaneous goods.
  • the package body packaged by skin pack packaging has the advantage that the package object can be fixed so as not to move within the package body, and the package object can be shown in three dimensions.
  • the skin pack packaging method includes a case of using a breathable material and a case of using a non-breathable material as the bottom material.
  • the method of using a material having air permeability for the bottom material is used when packaging an object such as stationery or miscellaneous goods that does not need to keep the inside of the package in a vacuum state.
  • the method of using a non-breathable material for the bottom material is used in the case of packaging an object to be packaged, such as food, which preferably has a vacuum inside the package.
  • Skin pack packaging can be performed, for example, by the following method. That is, first, a bottom material, an article to be packaged, and a skin pack film are prepared in a chamber, and the skin pack film is heated and softened. Subsequently, the inside of the chamber is evacuated, and at least a part of the peripheral edge of the skin pack film prepared on the upper part of the package is adhered to the bottom material. Then, by releasing the vacuum in the chamber, skin pack packaging can be performed by stretching the skin pack film by atmospheric pressure and bringing it into close contact with an object to be packaged (see, for example, Patent Document 1).
  • a package in which food is skin-packed in a vacuum state is excellent in that the freshness of the food can be maintained.
  • the food is a block-shaped meat product
  • the impression given to is too strong.
  • this method in the case of this method, in the manufacturing process, first, two steps of skin-pack packaging the tray-like bottom material and the article to be packaged, and subsequently providing a top film on the peripheral edge of the tray-like bottom material. It becomes necessary and a new problem arises that the burden on manufacturing becomes large.
  • the present invention provides a laminate for skin pack packaging that can easily manufacture a package in which a package is provided in a skin pack on a tray-like bottom material and is provided with a top film (lid film).
  • the object is to provide a film.
  • the present invention adopts the following configuration in order to solve the above problems.
  • a first film made of resin having a penetrating part and a second film made of resin having a lower draw ratio than the first film or made of unstretched are bonded together in a state where delamination is possible.
  • a laminated film for skin pack packaging. (2) The laminated film for skin pack packaging according to (1), wherein the second film is a skin pack film.
  • the said 1st film has a penetration part, The package body characterized by the above-mentioned.
  • a laminate for skin pack packaging capable of easily producing a package body in which a packaged object is skin packed on a tray-like bottom material and provided with a top film (lid film).
  • a film can be provided.
  • the laminated film for skin pack packaging according to the present invention has a structure in which a resin-made first film and a second film are bonded together in a state where delamination is possible. And the 1st film has a penetration part, and the 2nd film has a draw ratio lower than a 1st film, or is an unstretched film, It is characterized by the above-mentioned.
  • a package is manufactured using the laminated film for skin pack packaging according to the present invention, when the vacuum in the chamber is released in the manufacturing process of the package, the air that has entered the chamber passes through the first film through portion. The first film and the second film are delaminated because they act to pass through and push the second film. For this reason, only a 2nd film is extended
  • the first film has a through portion.
  • the shape of the through portion is not particularly limited, and may be a circular or polygonal through hole, or may be a linear or U-shaped cut. It is only necessary that gas can pass through the through portion.
  • size of a penetration part is not specifically limited, Since a 1st film functions as a cover film in a package body, it is preferable that it is not too big.
  • the number of penetrating portions is not particularly limited, and may be appropriately selected according to the size of the laminated film for skin pack packaging, the bonding strength between the first film and the second film, the molding speed, and the like. .
  • the material which comprises a 1st film will not be specifically limited if it is a resin film, A well-known thing can be used.
  • films of polyethylene, polypropylene, polyester, polyamide, polycarbonate, polystyrene, cellophane, etc. can be used.
  • the thickness of the first film is not particularly limited, and for example, a film having a thickness of about 5 ⁇ m to 100 ⁇ m is preferably used, a thickness of about 10 ⁇ m to 50 ⁇ m is more preferable, and a thickness of about 12 ⁇ m to 30 ⁇ m. More preferably it is.
  • the first film may be a single layer film or a laminated film in which a plurality of films are laminated.
  • the film constituting the laminated film is not particularly limited, and for example, a laminated film and a film having a lower draw ratio are preferably used. be able to.
  • the first film is a laminated film, it is sufficient that the films constituting the laminated film of the first film are bonded so as not to delaminate at the time of delamination of the first film and the second film. It is sufficient that the stretching ratio of the entire film is higher than that of the second film.
  • the second film may be a resin film that has a lower draw ratio than that of the first film or that is not stretched.
  • the second film since the second film functions as a film that adheres along the surface of the package in the package, it is preferably excellent in stretchability, for example, a skin pack film is preferably used. be able to.
  • the material which comprises a 2nd film will not be specifically limited if it is a resin film, A well-known thing can be used.
  • films of polypropylene, polyethylene, ethylene vinyl acetate copolymer (EVA), ionomer, ethylene-vinyl alcohol copolymer (EVOH), etc. can be used.
  • the thickness of the second film is not particularly limited, and for example, a film having a thickness of about 20 ⁇ m to 250 ⁇ m can be preferably used, a thickness of about 40 ⁇ m to 150 ⁇ m is more preferable, and a thickness of about 80 ⁇ m to 130 ⁇ m. More preferably it is.
  • the 1st film and the 2nd film should just be pasted together so that a shift may not arise at the time of conveyance.
  • the method of laminating is not particularly limited, but the first film and the second film are easily delaminated in the process of producing a package using the laminated film for skin pack packaging according to the present invention. Is preferred.
  • the peeling layer is provided between the 1st film and the 2nd film.
  • the 1st film and the 2nd film are bonded together through the peeling layer and the contact bonding layer.
  • the adhesive layer is partially interposed between the first film and the second film, and the release layer may be interposed in a portion other than the portion where the adhesive layer is interposed.
  • the release layer can prevent the first film and the second film from being excessively adhered to each other, and can make the films easy to peel when the first film and the second film are delaminated. What is necessary is just to be formed with the material.
  • the release layer is preferably formed of a release agent such as silicone, Teflon (registered trademark), or paraffin.
  • the adhesive layer only needs to be formed of a material capable of adhering the first film and the second film.
  • an adhesive or the like can be preferably used.
  • the adhesive only needs to have adhesiveness, and for example, a rubber-based adhesive, an acrylic-based adhesive, or the like can be used.
  • polyethylene can also be used.
  • unevenness is given to a part or all of the second film.
  • the method for forming the unevenness is not particularly limited, and for example, it can be formed by embossing the second film.
  • corrugation may be formed in the whole surface of the 2nd film, and may be formed in a part.
  • unevenness is formed in the vicinity of the portion facing the penetrating portion of the first film.
  • the second film preferably has gas barrier properties.
  • the second film is a film that adheres along the package. For this reason, when the said 2nd film has gas-barrier property, when a packaged object is vacuum-packed, the vacuum state can be maintained and it becomes possible to improve the preservability of a packaged object. .
  • the laminated film for skin pack packaging according to the present invention can be manufactured, for example, by laminating a first film having a penetrating portion at a predetermined location with a second film via an adhesive layer or an adhesive layer and a release layer. it can.
  • the adhesive layer and the release layer may be formed on either the first film or the second film, or may be formed on both the first film and the second film.
  • the packaging body which concerns on this invention is a packaging body which packaged the to-be-packaged goods using the tray-shaped bottom material which has a flange part, and the laminated film for skin pack packaging which concerns on the said this invention. More specifically, the object to be packaged is skin-pack-wrapped by a second film made of resin on a tray-like bottom material having a flange portion, and the resin-made material having a penetration portion is formed on the flange portion of the bottom material. It is a package in which the first film is held as a lid film.
  • the 2nd film is extended
  • the 1st film is heat-sealed with the flange part of the said bottom material through the 2nd film.
  • the material which comprises the said bottom material will not be specifically limited if it is a resin-made sheet
  • a sheet of polyethylene, polypropylene, polyester or the like can be used.
  • the thickness of the bottom material is not particularly limited.
  • a thickness of about 200 ⁇ m to 900 ⁇ m can be used preferably, about 300 ⁇ m to 800 ⁇ m, more preferably about 400 ⁇ m to 700 ⁇ m. More preferably it is.
  • the shape of the bottom material is not particularly limited as long as it is a tray shape, and a wall is formed so as to surround the end portion of the substantially planar bottom portion, and a flange portion may be provided on the upper portion of the wall. .
  • the height of the wall is not particularly limited, and may be higher than the wall of what is generally called a tray. Further, the wall may stand vertically from the bottom, or may be formed in an oblique direction.
  • the package according to the present invention is not only a product to be packaged tightly packed by a bottom material and a second film, but also a laminated film for skin pack packaging comprising a first film and a second film on a flange portion of the bottom material. Is heat-sealed to form a lid of the first film.
  • the conventional skin pack package since the package is only protected by the film on the skin pack, the package is damaged when an external impact is applied. Since the lid
  • an object to be packaged is fixed to the bottom of the bottom material by the second film so that it does not move greatly in the package.
  • the package according to the present invention can be placed vertically as well as flatly stacked as in a conventional top seal package.
  • the bottom material preferably has gas barrier properties.
  • the second film preferably has gas barrier properties.
  • the second film is a film that adheres along the package. For this reason, when the said 2nd film has gas-barrier property, when a packaged object is vacuum-packed, the vacuum state can be maintained and it becomes possible to maintain the freshness of a packaged object.
  • the second film swells due to the vapor pressure generated from the packaged item, but the lid by the first film is located above the second film.
  • the expansion of the second film is suppressed to the position of the first film.
  • the skin film swells greatly, there may be anxiety of bursting to the consumer (user), but in the case of the package according to the present invention, There is no worry.
  • the package according to the present invention can be manufactured using a known skin pack packaging machine by using a tray-like bottom material having a flange portion and the laminated film for skin pack packaging according to the present invention. it can. That is, the manufacturing method of the package according to the present invention includes a tray-like bottom material having a flange portion, an article to be packaged placed on the bottom material, and the laminated film for skin pack packaging in a chamber.
  • a step of preparing, a step of heating and softening the laminated film for skin pack packaging, a step of evacuating the chamber, and bringing the softened laminated film for skin pack packaging close to the flange portion of the bottom material The first film and the second film of the laminated film for skin pack packaging by atmospheric pressure by releasing the vacuum in the chamber by pressing the second film of the laminated film for skin pack packaging on the flange portion. And delaminating the film, and stretching the second film along the surface of the article to be packaged to bring it into close contact.
  • the manufacturing method of the package which concerns on this invention is demonstrated.
  • the bottom material 5, the article 6 to be packaged, and the laminated film 4 for skin pack packaging according to the present invention are prepared in a chamber of a skin pack packaging machine.
  • the package 6 may be placed on the bottom material 5.
  • the laminated film for skin pack packaging according to the present invention is heated and softened.
  • the chamber is evacuated, and the softened laminated film 4 for skin pack packaging according to the present invention is brought close to the flange portion of the bottom material 5.
  • multilayer film 4 for skin pack packaging and the flange part of the bottom material 5 are crimped
  • the article 6 to be packaged is surrounded by the bottom material 5 and the laminated film 4 for skin pack packaging and sealed in a vacuum state. Thereafter, when the vacuum is released, the atmosphere enters the chamber by atmospheric pressure, and pressure is applied to the skin pack packaging laminated film 4 according to the present invention toward the bottom material 5. At this time, since the penetration part 3 is formed in the first film 1, the air acts to push the second film 2 through the penetration part 3. Therefore, as shown in FIG. 2, the first film 1 and the second film 2 are delaminated, and only the second film 2 is stretched so as to cover the package 6 and the bottom material 5, and is in vacuum contact.
  • the first film 1 is a lid film. In this way, a package body in which the article to be packaged 6 is skin-packed by the bottom material 5 and the second film 2 and the lid of the first film 1 is formed on the flange portion of the bottom material 5 is manufactured. Can do.
  • Example 1 A 12 ⁇ m thick PET film (first film) previously provided with a penetrating part was coated with a release agent only on the bottom part of the tray main body and the side part of the tray main body, and a 100 ⁇ m thick skin with an adhesive applied to the entire surface A laminate film (laminated film 1 for skin pack packaging) was produced by laminating with a pack film (second film), and Example 1 was obtained. In addition, as a penetration part of the first film, three circular holes with a diameter of 6 mm were formed.
  • Example 2> A laminated film 2 for skin pack packaging of Example 2 was produced in the same manner as Example 1 except that three U-shaped cuts were formed as the penetrating portion of the first film.
  • Example 3> A laminated film 3 for skin pack packaging of Example 3 was produced in the same manner as in Example 1 except that three S-shaped cuts were formed as the through portions of the first film.
  • Example 4> A laminated film 4 for skin pack packaging of Example 4 was produced in the same manner as in Example 1 except that three slits (linear cuts) were formed as the through portions of the first film.
  • Comparative Example 1 Apply the adhesive to the PET film with a thickness of 12 ⁇ m that does not have a through-hole, except for the part corresponding to the bottom of the tray main body and the side of the tray main body, and bond it to the 100 ⁇ m-thick skin pack film to produce a laminate film. Comparative Example 1 was obtained.
  • ⁇ Test 1> The laminated films 1 to 4 for skin pack packaging of Examples 1 to 4 and the laminated film of Comparative Example 1 were comparatively evaluated by the following test methods.
  • ⁇ Test method 1> A tray in which an article to be packaged was stored and laminated films 1 to 4 for skin pack packaging of Examples 1 to 4 or a laminated film of Comparative Example 1 were prepared in a chamber. Then, the laminated film 1 to 4 for skin pack packaging or the laminate film was heated and softened, and then the inside of the chamber was evacuated. Subsequently, the softened laminated film 1 to 4 or laminated film for skin pack packaging was pressed in close proximity to the flange portion of the tray. Then, the package was produced by releasing the vacuum in the chamber.
  • a towel containing 50 g of water was used as a packaged item.
  • the tray used was a bottom having a bottom portion of 130 mm ⁇ 90 mm, a height of 40 mm, and a flange portion having a width of 10 mm on the upper wall surface. This test was performed 5 times, and the finished package was evaluated as follows.
  • ⁇ Test 2> The laminated film 1 for skin pack packaging of Example 1 and the film for skin pack of Comparative Example 2 were comparatively evaluated by the following test methods.
  • ⁇ Test method 2> A package was produced in the same manner as in Test Method 1 except that the laminated film 1 for skin pack packaging of Example 1 or the film for skin pack of Comparative Example 2 was used. Each obtained package was heated in a microwave oven (Hitachi Appliances Co., Ltd./MRO-JF6) with an output of 500 W for 2 minutes. This test was conducted 5 times and evaluated.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Packages (AREA)
  • Wrappers (AREA)
  • Laminated Bodies (AREA)

Abstract

The purpose of the present invention is to provide a laminated film for skin pack packaging that allows easy manufacturing of a packaging body wherein an object to be packaged is packaged in a skin pack on tray-shaped bottom material and a top film (cover film) is provided. This laminated film 4 for skin pack packaging is characterized in that a resin first film 1 that has a through-hole section 3 and a resin second film 2 that either has a lower draw ratio than the first film 1 or is not stretched are adhered in a state in which same can be separated.

Description

スキンパック包装用積層フィルム、包装体及び包装体の製造方法LAMINATED FILM FOR SKIN PACK PACKAGING, PACKAGE, AND METHOD FOR PRODUCING PACKAGE
　本発明は、スキンパック包装用積層フィルム、包装体及び包装体の製造方法に関する。 The present invention relates to a laminated film for skin pack packaging, a package, and a method for producing the package.
　スキンパック包装は金型を使わずにフィルムを被包装物に密着させることが可能な包装方法であり、食品をはじめ文具や雑貨類等、多くの分野で利用されている。スキンパック包装によって包装された包装体は、被包装物が包装体内で動かないように固定でき、また、被包装物を立体的に見せることができるという利点がある。 Skin pack packaging is a packaging method that allows a film to be closely attached to an object to be packaged without using a mold, and is used in many fields such as food, stationery and miscellaneous goods. The package body packaged by skin pack packaging has the advantage that the package object can be fixed so as not to move within the package body, and the package object can be shown in three dimensions.
　スキンパック包装を行なう方法には、底材として、通気性を有する材料を用いる場合と、通気性を有さない材料を用いる場合とがある。通気性を有する材料を底材に用いる方法は、文具や雑貨類等の、包装体の内部を真空状態に保ち続ける必要がない被包装物を包装する場合に利用されている。また、通気性を有さない材料を底材に用いる方法は、食品等の、包装体の内部を真空状態に保つことが好ましい被包装物を包装する場合に利用されている。 The skin pack packaging method includes a case of using a breathable material and a case of using a non-breathable material as the bottom material. The method of using a material having air permeability for the bottom material is used when packaging an object such as stationery or miscellaneous goods that does not need to keep the inside of the package in a vacuum state. Moreover, the method of using a non-breathable material for the bottom material is used in the case of packaging an object to be packaged, such as food, which preferably has a vacuum inside the package.
　スキンパック包装は、例えば、次のような方法によって行なうことができる。
　すなわち、まず、チャンバー内に底材、被包装物及びスキンパックフィルムを用意し、スキンパックフィルムを加熱して軟化させる。続いて、チャンバー内を真空にし、被包装物の上部に用意されたスキンパックフィルムの周縁の少なくとも一部を底材と接着させる。そして、チャンバー内の真空を解除することで、大気圧によってスキンパックフィルムを延伸させて被包装物に密着させてスキンパック包装を行なうことができる（例えば、特許文献１等参照）。 Skin pack packaging can be performed, for example, by the following method.
That is, first, a bottom material, an article to be packaged, and a skin pack film are prepared in a chamber, and the skin pack film is heated and softened. Subsequently, the inside of the chamber is evacuated, and at least a part of the peripheral edge of the skin pack film prepared on the upper part of the package is adhered to the bottom material. Then, by releasing the vacuum in the chamber, skin pack packaging can be performed by stretching the skin pack film by atmospheric pressure and bringing it into close contact with an object to be packaged (see, for example, Patent Document 1).
特開２０１０－０７６８０３号公報JP 2010-077683 A
　上述のように、食品を真空状態でスキンパック包装した包装体は、食品の鮮度を保つことができるという点で優れているが、例えば、食品がブロック状の肉製品である場合には消費者に与える印象が強すぎるという点で問題がある。この問題を回避するためには、例えば、底材として、周縁が被包装物よりもせり上がったトレー状の材料を用い、当該底材の周縁部に更にトップフィルムを設けることが考えられる。しかしながらこの方法の場合には、製造工程において、まず、トレー状の底材と被包装物とをスキンパック包装し、続けてトレー状の底材の周縁部にトップフィルムを設けるという２つの工程が必要になってしまい、製造にかかる負担が大きくなってしまうという新たな問題が生じてしまう。 As described above, a package in which food is skin-packed in a vacuum state is excellent in that the freshness of the food can be maintained. For example, when the food is a block-shaped meat product, There is a problem in that the impression given to is too strong. In order to avoid this problem, for example, it is conceivable to use a tray-like material whose peripheral edge is raised from the packaged object as the bottom material, and further provide a top film at the peripheral edge of the bottom material. However, in the case of this method, in the manufacturing process, first, two steps of skin-pack packaging the tray-like bottom material and the article to be packaged, and subsequently providing a top film on the peripheral edge of the tray-like bottom material. It becomes necessary and a new problem arises that the burden on manufacturing becomes large.
　そこで、本発明は、被包装物がトレー状の底材にスキンパック包装され、かつ、トップフィルム（蓋フィルム）が設けられた包装体を、容易に製造することが可能なスキンパック包装用積層フィルムを提供することを目的とする。 Therefore, the present invention provides a laminate for skin pack packaging that can easily manufacture a package in which a package is provided in a skin pack on a tray-like bottom material and is provided with a top film (lid film). The object is to provide a film.
　本発明は上記課題を解決すべく以下の構成を採用する。
（１）貫通部を有する樹脂製の第１フィルムと、第１フィルムよりも低い延伸倍率を有するか又は未延伸からなる樹脂製の第２フィルムと、を層間剥離可能な状態で貼り合わせたことを特徴とするスキンパック包装用積層フィルム。
（２）前記第２フィルムがスキンパックフィルムであることを特徴とする上記（１）に記載のスキンパック包装用積層フィルム。
（３）前記第１フィルムと前記第２フィルムとは、剥離層を介して貼り合わされていることを特徴とする上記（１）又は（２）に記載のスキンパック包装用積層フィルム。
（４）前記第１フィルムと前記第２フィルムとは、剥離層及び接着層を介して貼り合わされていることを特徴とする上記（１）又は（２）に記載のスキンパック包装用積層フィルム。
（５）前記第１フィルムと前記第２フィルムの間に接着層が部分的に介在することを特徴とする上記（１）、（２）及び（４）のいずれかに記載のスキンパック包装用積層フィルム。
（６）前記第１フィルム及び／又は前記第２フィルムの一部又は全部に凹凸が施されていることを特徴とする上記（１）～（５）のいずれかに記載のスキンパック包装用積層フィルム。
（７）前記第２フィルムがガスバリア性を有することを特徴とする上記（１）～（６）のいずれかに記載のスキンパック包装用積層フィルム。
（８）フランジ部を有するトレー状の底材に、被包装物が樹脂製の第２フィルムによってスキンパック包装され、かつ、前記底材のフランジ部と略平行に樹脂製の第１フィルムが蓋フィルムとして保持された包装体であって、前記第１フィルムが貫通部を有することを特徴とする包装体。
（９）前記底材がガスバリア性を有する上記（８）に記載の包装体。
（１０）フランジ部を有するトレー状の底材と、前記底材に載置された被包装物と、上記（１）～（７）のいずれかに記載のスキンパック包装用積層フィルムと、をチャンバー内に用意する工程と、
　前記スキンパック包装用積層フィルムを加熱して軟化させる工程と、
　前記チャンバー内を真空にする工程と、
　軟化した前記スキンパック包装用積層フィルムを前記底材のフランジ部に近接させ、前記スキンパック包装用積層フィルムを前記フランジ部に圧着させる工程と、
　前記チャンバー内の真空を解除することによって、大気圧により前記スキンパック包装用積層フィルムの第１フィルムと第２フィルムとを層間剥離させ、第１フィルムをトレー状の底材の蓋フィルムとして第２フィルムの上部位置に保持させ、第２フィルムを前記被包装物の表面に沿うように延伸させて密着させる工程と、
を有することを特徴とする包装体の製造方法。 The present invention adopts the following configuration in order to solve the above problems.
(1) A first film made of resin having a penetrating part and a second film made of resin having a lower draw ratio than the first film or made of unstretched are bonded together in a state where delamination is possible. A laminated film for skin pack packaging.
(2) The laminated film for skin pack packaging according to (1), wherein the second film is a skin pack film.
(3) The laminated film for skin pack packaging according to (1) or (2), wherein the first film and the second film are bonded together via a release layer.
(4) The laminated film for skin pack packaging according to (1) or (2), wherein the first film and the second film are bonded together via a release layer and an adhesive layer.
(5) The skin pack packaging according to any one of (1), (2) and (4) above, wherein an adhesive layer is partially interposed between the first film and the second film Laminated film.
(6) The laminate for skin pack packaging according to any one of (1) to (5) above, wherein a part or all of the first film and / or the second film is uneven. the film.
(7) The laminated film for skin pack packaging according to any one of (1) to (6) above, wherein the second film has gas barrier properties.
(8) On the tray-like bottom material having the flange portion, the object to be packaged is skin-pack-wrapped with the resin-made second film, and the resin-made first film is covered substantially in parallel with the flange portion of the bottom material. It is a package body hold | maintained as a film, Comprising: The said 1st film has a penetration part, The package body characterized by the above-mentioned.
(9) The package according to (8), wherein the bottom material has gas barrier properties.
(10) A tray-like bottom material having a flange portion, an article to be packaged placed on the bottom material, and the laminated film for skin pack packaging according to any one of (1) to (7) above. A step of preparing in the chamber;
Heating and softening the laminated film for skin pack packaging;
Vacuuming the chamber;
The step of bringing the softened laminated film for skin pack packaging close to the flange portion of the bottom material, and crimping the laminated film for skin pack packaging to the flange portion;
By releasing the vacuum in the chamber, the first film and the second film of the laminated film for skin pack packaging are delaminated by atmospheric pressure, and the first film is used as a lid film for a tray-like bottom material. Holding the film at the upper position, stretching the second film along the surface of the article to be packaged, and attaching the second film;
A method for producing a package comprising the steps of:
　本発明によれば、被包装物がトレー状の底材にスキンパック包装され、かつ、トップフィルム（蓋フィルム）が設けられた包装体を、容易に製造することが可能なスキンパック包装用積層フィルムを提供することができる。 According to the present invention, a laminate for skin pack packaging capable of easily producing a package body in which a packaged object is skin packed on a tray-like bottom material and provided with a top film (lid film). A film can be provided.
本発明に係る包装体の製造方法において、本発明に係るスキンパック包装用積層フィルムを底材のフランジ部に圧着させた状態の一例の概略を示す断面図である。In the manufacturing method of the package concerning the present invention, it is a sectional view showing the outline of an example of the state where the laminated film for skin pack packaging concerning the present invention was pressed on the flange part of the bottom material. 本発明に係る包装体の製造方法において、本発明に係るスキンパック包装用積層フィルムの第２フィルムを被包装物の表面に沿うように延伸させて密着させた状態の一例の概略を示す断面図である。Sectional drawing which shows the outline of an example of the state which extended | stretched and adhered the 2nd film of the laminated | multilayer film for skin pack packaging which concerns on this invention along the surface of a packaged object in the manufacturing method of the package which concerns on this invention. It is.
＜スキンパック包装用積層フィルム＞
　本発明に係るスキンパック包装用積層フィルムは、樹脂製の第１フィルムと第２フィルムとが層間剥離可能な状態で貼り合わされた構造を有している。そして、第１フィルムは貫通部を有しており、また、第２フィルムは第１フィルムよりも低い延伸倍率を有するか又は未延伸フィルムであることを特徴とする。本発明に係るスキンパック包装用積層フィルムを用いて包装体を製造すると、包装体の製造過程において、チャンバー内の真空を解除した際に、チャンバー内に進入した大気が第１フィルムの貫通部を通過して第２フィルムを押し込むように作用するため、第１フィルムと第２フィルムとが層間剥離する。このため、第２フィルムのみが大気圧によって延伸して被包装物に密着し、第１フィルムが蓋フィルムとなる。 <Laminated film for skin pack packaging>
The laminated film for skin pack packaging according to the present invention has a structure in which a resin-made first film and a second film are bonded together in a state where delamination is possible. And the 1st film has a penetration part, and the 2nd film has a draw ratio lower than a 1st film, or is an unstretched film, It is characterized by the above-mentioned. When a package is manufactured using the laminated film for skin pack packaging according to the present invention, when the vacuum in the chamber is released in the manufacturing process of the package, the air that has entered the chamber passes through the first film through portion. The first film and the second film are delaminated because they act to pass through and push the second film. For this reason, only a 2nd film is extended | stretched by atmospheric pressure, closely_contact | adheres to a to-be-packaged object, and a 1st film becomes a cover film.
　上記のように第１フィルムは貫通部を有している。貫通部の形状は特に限定されるものではなく、円形や多角形の貫通孔でもよいし、線状やＵ字状の切れ込みであってもよい。貫通部を通じて気体が通過できるようになっていればよい。
　貫通部の大きさは特に限定されるものではないが、第１フィルムは包装体において蓋フィルムとして機能するものであることから、大き過ぎないものであることが好ましい。
　また、貫通部の数も特に限定されるものではなく、スキンパック包装用積層フィルムの大きさや、第１フィルムと第２フィルムとの貼り合わせ強度や、成型速度等に応じて適宜選択すればよい。 As described above, the first film has a through portion. The shape of the through portion is not particularly limited, and may be a circular or polygonal through hole, or may be a linear or U-shaped cut. It is only necessary that gas can pass through the through portion.
Although the magnitude | size of a penetration part is not specifically limited, Since a 1st film functions as a cover film in a package body, it is preferable that it is not too big.
Further, the number of penetrating portions is not particularly limited, and may be appropriately selected according to the size of the laminated film for skin pack packaging, the bonding strength between the first film and the second film, the molding speed, and the like. .
　第１フィルムを構成する材料は、樹脂製のフィルムであれば特に限定されるものではなく、公知のものを用いることができる。例えば、ポリエチレン、ポリプロピレン、ポリエステル、ポリアミド、ポリカーボネート、ポリスチレン、セロハン等のフィルムを用いることができる。
　また、第１フィルムの厚さは特に限定されるものではなく、例えば、５μｍ～１００μｍ程度のものを好ましく用いることができ、１０μｍ～５０μｍ程度であることがより好ましく、１２μｍ～３０μｍ程度のものであることが更に好ましい。 The material which comprises a 1st film will not be specifically limited if it is a resin film, A well-known thing can be used. For example, films of polyethylene, polypropylene, polyester, polyamide, polycarbonate, polystyrene, cellophane, etc. can be used.
Further, the thickness of the first film is not particularly limited, and for example, a film having a thickness of about 5 μm to 100 μm is preferably used, a thickness of about 10 μm to 50 μm is more preferable, and a thickness of about 12 μm to 30 μm. More preferably it is.
　第１フィルムは単層フィルムであってもよいし、複数のフィルムが積層された積層フィルムであってもよい。第１フィルムとして積層フィルムを用いる場合には、当該積層フィルムを構成するフィルムは特に限定されるものではなく、例えば、延伸フィルムとそれよりも低い延伸倍率を有するフィルムを積層したもの等を好ましく用いることができる。第１フィルムが積層フィルムである場合には、第１フィルムと第２フィルムの層間剥離時に第１フィルムの積層フィルムを構成するフィルム同士が層間剥離しないように接着していればよく、また、第１フィルム全体として第２フィルムよりも延伸倍率が高くなっていればよい。 The first film may be a single layer film or a laminated film in which a plurality of films are laminated. When a laminated film is used as the first film, the film constituting the laminated film is not particularly limited, and for example, a laminated film and a film having a lower draw ratio are preferably used. be able to. When the first film is a laminated film, it is sufficient that the films constituting the laminated film of the first film are bonded so as not to delaminate at the time of delamination of the first film and the second film. It is sufficient that the stretching ratio of the entire film is higher than that of the second film.
　第２フィルムは、樹脂製のフィルムであって、第１フィルムよりも低い延伸倍率を有するものであるか、あるいは未延伸からなるものであればよい。上記のように第２フィルムは、包装体において被包装物の表面に沿って密着するフィルムとして機能するものであるから、延伸性に優れるものであることが好ましく、例えば、スキンパックフィルムを好ましく用いることができる。 The second film may be a resin film that has a lower draw ratio than that of the first film or that is not stretched. As described above, since the second film functions as a film that adheres along the surface of the package in the package, it is preferably excellent in stretchability, for example, a skin pack film is preferably used. be able to.
　第２フィルムを構成する材料は、樹脂製のフィルムであれば特に限定されるものではなく、公知のものを用いることができる。例えば、ポリプロピレン、ポリエチレン、エチレン酢酸ビニル共重合体（ＥＶＡ）、アイオノマー、エチレン－ビニルアルコール共重合体（ＥＶＯＨ）等のフィルムを用いることができる。
　また、第２フィルムの厚さは特に限定されるものではなく、例えば、２０μｍ～２５０μｍ程度のものを好ましく用いることができ、４０μｍ～１５０μｍ程度であることがより好ましく、８０μｍ～１３０μｍ程度のものであることが更に好ましい。 The material which comprises a 2nd film will not be specifically limited if it is a resin film, A well-known thing can be used. For example, films of polypropylene, polyethylene, ethylene vinyl acetate copolymer (EVA), ionomer, ethylene-vinyl alcohol copolymer (EVOH), etc. can be used.
The thickness of the second film is not particularly limited, and for example, a film having a thickness of about 20 μm to 250 μm can be preferably used, a thickness of about 40 μm to 150 μm is more preferable, and a thickness of about 80 μm to 130 μm. More preferably it is.
　第１フィルムと第２フィルムとは、搬送時にずれが生じないように貼り合わされていればよい。貼り合わせる方法は特に限定されるものではないが、本発明に係るスキンパック包装用積層フィルムを用いて包装体を製造する過程において第１フィルムと第２フィルムとが層間剥離しやすくなっていることが好ましい。このため、第１フィルムと第２フィルムとの間には剥離層が設けられていることが好ましい。
　また、第１フィルムと第２フィルムとは、剥離層と接着層を介して貼り合わされていることが好ましい。例えば、第１フィルムと第２フィルムの間に接着層が部分的に介在しており、当該接着層が介在している部分以外の部分に剥離層を介在させればよい。 The 1st film and the 2nd film should just be pasted together so that a shift may not arise at the time of conveyance. The method of laminating is not particularly limited, but the first film and the second film are easily delaminated in the process of producing a package using the laminated film for skin pack packaging according to the present invention. Is preferred. For this reason, it is preferable that the peeling layer is provided between the 1st film and the 2nd film.
Moreover, it is preferable that the 1st film and the 2nd film are bonded together through the peeling layer and the contact bonding layer. For example, the adhesive layer is partially interposed between the first film and the second film, and the release layer may be interposed in a portion other than the portion where the adhesive layer is interposed.
　前記剥離層は、第１フィルムと第２フィルムとが強固に接着し過ぎることを防止し、第１フィルムと第２フィルムとを層間剥離させる際に互いのフィルムを剥離させやすくすることが可能な材料によって形成されていればよい。剥離層は、例えば、シリコーンや、テフロン（登録商標）、パラフィンなどの離型剤によって形成されていることが好ましい。 The release layer can prevent the first film and the second film from being excessively adhered to each other, and can make the films easy to peel when the first film and the second film are delaminated. What is necessary is just to be formed with the material. The release layer is preferably formed of a release agent such as silicone, Teflon (registered trademark), or paraffin.
　前記接着層は、第１フィルムと第２フィルムとを接着させることが可能な材料によって形成されていればよく、例えば、接着剤等を好ましく用いることができる。接着剤は、接着性を有するものであればよく、例えば、ゴム系粘着剤、アクリル系粘着剤などを用いることができる。また、エクストルージョンラミネートを行なう場合には、ポリエチレンも用いることができる。 The adhesive layer only needs to be formed of a material capable of adhering the first film and the second film. For example, an adhesive or the like can be preferably used. The adhesive only needs to have adhesiveness, and for example, a rubber-based adhesive, an acrylic-based adhesive, or the like can be used. Moreover, when performing extrusion lamination, polyethylene can also be used.
　前記第２フィルムの一部又は全部には凹凸が施されていることが好ましい。これにより第１フィルムと第２フィルムとを層間剥離させる際に剥離させやすくすることができる。凹凸を形成する方法は特に限定されるものではなく、例えば、第２フィルムにエンボス加工等を施すことにより形成することができる。また、凹凸は第２フィルムの全面に形成されていてもよいし、一部に形成されていてもよい。例えば、第１フィルムの貫通部と対向する部分の近傍に凹凸が形成されていることが好ましい。 It is preferable that unevenness is given to a part or all of the second film. Thereby, when making a 1st film and a 2nd film delaminate, it can be made to peel easily. The method for forming the unevenness is not particularly limited, and for example, it can be formed by embossing the second film. Moreover, the unevenness | corrugation may be formed in the whole surface of the 2nd film, and may be formed in a part. For example, it is preferable that unevenness is formed in the vicinity of the portion facing the penetrating portion of the first film.
　前記第２フィルムはガスバリア性を有していることが好ましい。前述のように、第２フィルムは被包装物に沿って密着するフィルムである。このため、当該第２フィルムがガスバリア性を有していることにより、被包装物を真空包装した場合にその真空状態を保つことができ、被包装物の保存性を向上させることが可能となる。 The second film preferably has gas barrier properties. As described above, the second film is a film that adheres along the package. For this reason, when the said 2nd film has gas-barrier property, when a packaged object is vacuum-packed, the vacuum state can be maintained and it becomes possible to improve the preservability of a packaged object. .
　本発明に係るスキンパック包装用積層フィルムは、例えば、所定箇所に貫通部を形成した第１フィルムを、接着層もしくは接着層及び剥離層を介して第２フィルムと貼り合わせることにより製造することができる。接着層及び剥離層は、第１フィルムもしくは第２フィルムのどちらか一方に形成してもよいし、第１フィルムと第２フィルムの両方に形成してもよい。 The laminated film for skin pack packaging according to the present invention can be manufactured, for example, by laminating a first film having a penetrating portion at a predetermined location with a second film via an adhesive layer or an adhesive layer and a release layer. it can. The adhesive layer and the release layer may be formed on either the first film or the second film, or may be formed on both the first film and the second film.
＜包装体＞
　本発明に係る包装体は、フランジ部を有するトレー状の底材と、前記本発明に係るスキンパック包装用積層フィルムを用いて被包装物を包装した包装体である。より具体的には、フランジ部を有するトレー状の底材に、被包装物が樹脂製の第２フィルムによってスキンパック包装され、かつ、前記底材のフランジ部に、貫通部を有する樹脂製の第１フィルムが蓋フィルムとして保持された包装体である。
　第２フィルムは、底材上の被包装物の表面及び底材に沿って延伸しており、その端部は底材のフランジ部にヒートシールされていることが好ましい。また、第１フィルムは、第２フィルムを介して、前記底材のフランジ部とヒートシールされていることが好ましい。 <Packaging body>
The packaging body which concerns on this invention is a packaging body which packaged the to-be-packaged goods using the tray-shaped bottom material which has a flange part, and the laminated film for skin pack packaging which concerns on the said this invention. More specifically, the object to be packaged is skin-pack-wrapped by a second film made of resin on a tray-like bottom material having a flange portion, and the resin-made material having a penetration portion is formed on the flange portion of the bottom material. It is a package in which the first film is held as a lid film.
It is preferable that the 2nd film is extended | stretched along the surface and bottom material of the to-be-packaged material on a bottom material, and the edge part is heat-sealed by the flange part of a bottom material. Moreover, it is preferable that the 1st film is heat-sealed with the flange part of the said bottom material through the 2nd film.
　前記底材を構成する材料は、樹脂製のシートであれば特に限定されるものではなく、公知のものを用いることができる。例えば、ポリエチレン、ポリプロピレン、ポリエステル等のシートを用いることができる。
　また、前記底材の厚さは特に限定されるものではなく、例えば、２００μｍ～９００μｍ程度のものを好ましく用いることができ、３００μｍ～８００μｍ程度であることがより好ましく、４００μｍ～７００μｍ程度のものであることが更に好ましい。 The material which comprises the said bottom material will not be specifically limited if it is a resin-made sheet | seat, A well-known thing can be used. For example, a sheet of polyethylene, polypropylene, polyester or the like can be used.
The thickness of the bottom material is not particularly limited. For example, a thickness of about 200 μm to 900 μm can be used preferably, about 300 μm to 800 μm, more preferably about 400 μm to 700 μm. More preferably it is.
　前記底材の形状はトレー状であれば特に限定されるものではなく、略平面状の底部の端部を囲うように壁が形成され、当該壁の上部にフランジ部を有していればよい。壁の高さも特に限定されるものではなく、一般にトレーと称されるものの壁よりも高くても構わない。また、壁は前記底部から垂直に起立したものであってもよいし、斜め方向に形成されたものであってもよい。 The shape of the bottom material is not particularly limited as long as it is a tray shape, and a wall is formed so as to surround the end portion of the substantially planar bottom portion, and a flange portion may be provided on the upper portion of the wall. . The height of the wall is not particularly limited, and may be higher than the wall of what is generally called a tray. Further, the wall may stand vertically from the bottom, or may be formed in an oblique direction.
　本発明に係る包装体は、底材と第２フィルムとによって被包装物が密着包装されているだけでなく、底材のフランジ部に第１フィルムと第２フィルムからなるスキンパック包装用積層フィルムがヒートシールされることによって第１フィルムによる蓋が形成されている。従来のスキンパック包装体では、被包装物はスキンパックにフィルムによって保護されているのみのため、外部からの衝撃が加わると被包装物がダメージを受けてしまうが、本発明に係る包装体は第１フィルムによる蓋が形成されているため、被包装物を保護することが可能である。また、蓋が形成されているため、包装体同士を積み重ねて段積みにすることも可能である。更に、第１フィルムに所定のデザインを印刷することで、意匠性に優れた包装体にすることができる。また、第１フィルムによる蓋が形成されているため、包装体にラベルを自動貼付することも容易である。 The package according to the present invention is not only a product to be packaged tightly packed by a bottom material and a second film, but also a laminated film for skin pack packaging comprising a first film and a second film on a flange portion of the bottom material. Is heat-sealed to form a lid of the first film. In the conventional skin pack package, since the package is only protected by the film on the skin pack, the package is damaged when an external impact is applied. Since the lid | cover with a 1st film is formed, it is possible to protect a to-be-packaged object. Moreover, since the lid | cover is formed, it is also possible to pile up packaging bodies and to make it a stack. Furthermore, it can be set as the package excellent in the designability by printing a predetermined design on a 1st film. Moreover, since the lid | cover with a 1st film is formed, it is also easy to attach a label to a package body automatically.
　本発明に係る包装体において被包装物は前記第２フィルムによって底材の底部に固定されて、包装体内において大きく移動しないようになっている。このため、本発明に係る包装体は従来型のトップシール包装のような平積みだけでなく、縦置きにすることも可能である。
　また、前記底材はガスバリア性を有することが好ましい。これにより、被包装物を真空包装した場合にその真空状態を保つことができ、被包装物の保存性を向上させることが可能となる。 In the package according to the present invention, an object to be packaged is fixed to the bottom of the bottom material by the second film so that it does not move greatly in the package. For this reason, the package according to the present invention can be placed vertically as well as flatly stacked as in a conventional top seal package.
The bottom material preferably has gas barrier properties. Thereby, when the packaged object is vacuum-packed, the vacuum state can be maintained, and the storage stability of the packaged object can be improved.
　前記第２フィルムはガスバリア性を有していることが好ましい。前述のように、第２フィルムは被包装物に沿って密着するフィルムである。このため、当該第２フィルムがガスバリア性を有していることにより、被包装物を真空包装した場合にその真空状態を保つことができ、被包装物の鮮度を保つことが可能となる。 The second film preferably has gas barrier properties. As described above, the second film is a film that adheres along the package. For this reason, when the said 2nd film has gas-barrier property, when a packaged object is vacuum-packed, the vacuum state can be maintained and it becomes possible to maintain the freshness of a packaged object.
　また、本発明に係る包装体を電子レンジ等によって加熱すると、被包装物から発生する蒸気圧により第２フィルムが膨らむが、第１フィルムによる蓋が第２フィルムの上部に位置しているため、第２フィルムの膨張は第１フィルムの位置までに抑えられる。従来のスキンパック包装体の場合には、スキンフィルムが大きく膨らむため、消費者（使用者）に破裂の不安感を与える場合があったが、本発明に係る包装体の場合にはそのような心配がない。 In addition, when the package according to the present invention is heated by a microwave oven or the like, the second film swells due to the vapor pressure generated from the packaged item, but the lid by the first film is located above the second film. The expansion of the second film is suppressed to the position of the first film. In the case of the conventional skin pack package, since the skin film swells greatly, there may be anxiety of bursting to the consumer (user), but in the case of the package according to the present invention, There is no worry.
＜包装体の製造方法＞
　本発明に係る包装体は、フランジ部を有するトレー状の底材と、前記本発明に係るスキンパック包装用積層フィルムとを用いることで、公知のスキンパック包装機を利用して製造することができる。
　すなわち、本発明に係る包装体の製造方法は、フランジ部を有するトレー状の底材と、前記底材に載置された被包装物と、前記スキンパック包装用積層フィルムと、をチャンバー内に用意する工程と、前記スキンパック包装用積層フィルムを加熱して軟化させる工程と、前記チャンバー内を真空にする工程と、軟化した前記スキンパック包装用積層フィルムを前記底材のフランジ部に近接させ、前記スキンパック包装用積層フィルムの第２フィルムを前記フランジ部に圧着させる工程と、前記チャンバー内の真空を解除することによって、大気圧により前記スキンパック包装用積層フィルムの第１フィルムと第２フィルムとを層間剥離させ、第２フィルムを前記被包装物の表面に沿うように延伸させて密着させる工程と、を有する。上記の各工程は、公知のスキンパック包装機の同一ステーション内で同時に効率的に行うことが可能である。 <Manufacturing method of package>
The package according to the present invention can be manufactured using a known skin pack packaging machine by using a tray-like bottom material having a flange portion and the laminated film for skin pack packaging according to the present invention. it can.
That is, the manufacturing method of the package according to the present invention includes a tray-like bottom material having a flange portion, an article to be packaged placed on the bottom material, and the laminated film for skin pack packaging in a chamber. A step of preparing, a step of heating and softening the laminated film for skin pack packaging, a step of evacuating the chamber, and bringing the softened laminated film for skin pack packaging close to the flange portion of the bottom material The first film and the second film of the laminated film for skin pack packaging by atmospheric pressure by releasing the vacuum in the chamber by pressing the second film of the laminated film for skin pack packaging on the flange portion. And delaminating the film, and stretching the second film along the surface of the article to be packaged to bring it into close contact. Each of the above steps can be efficiently performed simultaneously in the same station of a known skin pack packaging machine.
　以下、図１及び図２に基づいて本発明に係る包装体の製造方法を説明する。
　まずは、前記底材５と、被包装物６と、前記本発明に係るスキンパック包装用積層フィルム４とをスキンパック包装機のチャンバー内に用意する。被包装物６は前記底材５に載置しておけばよい。そして、前記本発明に係るスキンパック包装用積層フィルムを加熱して軟化させる。
　続いて、チャンバー内を真空にし、軟化した前記本発明に係るスキンパック包装用積層フィルム４を前記底材５のフランジ部に近接させる。そして、図１に示すように、スキンパック包装用積層フィルム４の第２フィルム２の側と底材５のフランジ部とを圧着させる。これにより、被包装物６は前記底材５とスキンパック包装用積層フィルム４とで囲まれて真空状態のまま密封される。
　その後、真空を解除すると、大気圧によって大気がチャンバー内に進入し、本発明に係るスキンパック包装用積層フィルム４には底材５に向かって圧力がかかる。このとき、第１フィルム１には貫通部３が形成されているため、大気は前記貫通部３を通過して第２フィルム２を押し込むように作用する。このため、図２に示すように、第１フィルム１と第２フィルム２とが層間剥離し、第２フィルム２のみが被包装物６と底材５とを覆うように延伸して真空密着し、第１フィルム１は蓋フィルムとなる。
　このようにして、被包装物６が底材５と第２フィルム２とによってスキンパック包装され、かつ、底材５のフランジ部に第１フィルム１による蓋が形成された包装体を製造することができる。 Hereinafter, based on FIG.1 and FIG.2, the manufacturing method of the package which concerns on this invention is demonstrated.
First, the bottom material 5, the article 6 to be packaged, and the laminated film 4 for skin pack packaging according to the present invention are prepared in a chamber of a skin pack packaging machine. The package 6 may be placed on the bottom material 5. Then, the laminated film for skin pack packaging according to the present invention is heated and softened.
Subsequently, the chamber is evacuated, and the softened laminated film 4 for skin pack packaging according to the present invention is brought close to the flange portion of the bottom material 5. And as shown in FIG. 1, the 2nd film 2 side of the laminated | multilayer film 4 for skin pack packaging and the flange part of the bottom material 5 are crimped | bonded. Thereby, the article 6 to be packaged is surrounded by the bottom material 5 and the laminated film 4 for skin pack packaging and sealed in a vacuum state.
Thereafter, when the vacuum is released, the atmosphere enters the chamber by atmospheric pressure, and pressure is applied to the skin pack packaging laminated film 4 according to the present invention toward the bottom material 5. At this time, since the penetration part 3 is formed in the first film 1, the air acts to push the second film 2 through the penetration part 3. Therefore, as shown in FIG. 2, the first film 1 and the second film 2 are delaminated, and only the second film 2 is stretched so as to cover the package 6 and the bottom material 5, and is in vacuum contact. The first film 1 is a lid film.
In this way, a package body in which the article to be packaged 6 is skin-packed by the bottom material 5 and the second film 2 and the lid of the first film 1 is formed on the flange portion of the bottom material 5 is manufactured. Can do.
　以下、実施例を用いて本発明をより詳細に説明するが、本発明はこの実施例に限定されるものではない。
＜材料＞
　第１フィルム、第２フィルム、底材及び接着層として、下記表１の材料を用いて試験を行った。
Figure JPOXMLDOC01-appb-T000001
 EXAMPLES Hereinafter, although this invention is demonstrated in detail using an Example, this invention is not limited to this Example.
<Material>
As the first film, the second film, the bottom material, and the adhesive layer, tests were performed using the materials shown in Table 1 below.
Figure JPOXMLDOC01-appb-T000001
＜実施例１＞
　予め貫通部を設けた厚さ１２μｍのＰＥＴフィルム（第１フィルム）に、トレー本体底部及びトレー本体側面部と対応する部分のみ剥離剤を塗布し、全面に塗布した接着剤で厚さ１００μｍのスキンパック用フィルム（第２フィルム）と貼り合わせてラミネートフィルム（スキンパック包装用積層フィルム１）を作製し、実施例１とした。なお、第１フィルムの貫通部としては、φ６ｍｍの円形の穴を３つ形成した。 <Example 1>
A 12 μm thick PET film (first film) previously provided with a penetrating part was coated with a release agent only on the bottom part of the tray main body and the side part of the tray main body, and a 100 μm thick skin with an adhesive applied to the entire surface A laminate film (laminated film 1 for skin pack packaging) was produced by laminating with a pack film (second film), and Example 1 was obtained. In addition, as a penetration part of the first film, three circular holes with a diameter of 6 mm were formed.
＜実施例２＞
　第１フィルムの貫通部としてＵ字状の切れ込みを３つ形成した以外は実施例１と同様にして実施例２のスキンパック包装用積層フィルム２を作製した。
＜実施例３＞
　第１フィルムの貫通部としてＳ字状の切れ込みを３つ形成した以外は実施例１と同様にして実施例３のスキンパック包装用積層フィルム３を作製した。
＜実施例４＞
　第１フィルムの貫通部としてスリット（線状の切れ込み）を３つ形成した以外は実施例１と同様にして実施例４のスキンパック包装用積層フィルム４を作製した。 <Example 2>
A laminated film 2 for skin pack packaging of Example 2 was produced in the same manner as Example 1 except that three U-shaped cuts were formed as the penetrating portion of the first film.
<Example 3>
A laminated film 3 for skin pack packaging of Example 3 was produced in the same manner as in Example 1 except that three S-shaped cuts were formed as the through portions of the first film.
<Example 4>
A laminated film 4 for skin pack packaging of Example 4 was produced in the same manner as in Example 1 except that three slits (linear cuts) were formed as the through portions of the first film.
＜比較例１＞
　貫通部を有していない厚さ１２μｍのＰＥＴフィルムにトレー本体底部及びトレー本体側面部と対応する部分以外のみ接着剤を塗布し、厚さ１００μｍのスキンパック用フィルムと貼り合わせてラミネートフィルムを作製し、比較例１とした。 <Comparative Example 1>
Apply the adhesive to the PET film with a thickness of 12 μm that does not have a through-hole, except for the part corresponding to the bottom of the tray main body and the side of the tray main body, and bond it to the 100 μm-thick skin pack film to produce a laminate film. Comparative Example 1 was obtained.
＜試験１＞
　実施例１～４のスキンパック包装用積層フィルム１～４と比較例１のラミネートフィルムを以下の試験方法にて比較評価した。
＜試験方法１＞
　被包装物を収納したトレーと実施例１～４のスキンパック包装用積層フィルム１～４又は比較例１のラミネートフィルムをチャンバー内に用意した。そして、前記スキンパック包装用積層フィルム１～４又はラミネートフィルムを加熱し、軟化させてからチャンバー内を真空にした。続いて、軟化した前記スキンパック包装用積層フィルム１～４又はラミネートフィルムを前記トレーのフランジ部に近接させて圧着した。その後、チャンバー内の真空を解除することによって包装体を作製した。
　なお、被包装物としては、水５０ｇを含ませたタオルを用いた。また、トレーは、底面が１３０ｍｍ×９０ｍｍ、高さが４０ｍｍで、壁面上部に幅が１０ｍｍのフランジ部を設けたものを用いた。
　この試験を５回行い、出来上がった包装体を次のようにして評価した。 <Test 1>
The laminated films 1 to 4 for skin pack packaging of Examples 1 to 4 and the laminated film of Comparative Example 1 were comparatively evaluated by the following test methods.
<Test method 1>
A tray in which an article to be packaged was stored and laminated films 1 to 4 for skin pack packaging of Examples 1 to 4 or a laminated film of Comparative Example 1 were prepared in a chamber. Then, the laminated film 1 to 4 for skin pack packaging or the laminate film was heated and softened, and then the inside of the chamber was evacuated. Subsequently, the softened laminated film 1 to 4 or laminated film for skin pack packaging was pressed in close proximity to the flange portion of the tray. Then, the package was produced by releasing the vacuum in the chamber.
In addition, as a packaged item, a towel containing 50 g of water was used. The tray used was a bottom having a bottom portion of 130 mm × 90 mm, a height of 40 mm, and a flange portion having a width of 10 mm on the upper wall surface.
This test was performed 5 times, and the finished package was evaluated as follows.
＜試験後の状態と判定１＞
　表２の通り、試験後の状態を確認し評価基準とした。
Figure JPOXMLDOC01-appb-T000002
 <State after test and judgment 1>
As shown in Table 2, the state after the test was confirmed and used as an evaluation standard.
Figure JPOXMLDOC01-appb-T000002
＜試験結果１＞
　試験１を５回繰り返した試験結果を表３にまとめた。
Figure JPOXMLDOC01-appb-T000003
 <Test result 1>
The test results obtained by repeating Test 1 five times are summarized in Table 3.
Figure JPOXMLDOC01-appb-T000003
＜比較例２＞
　第１フィルムと貼り合わせていないスキンパック用フィルムのみを比較例２とした。 <Comparative Example 2>
Only the film for skin packs not bonded to the first film was used as Comparative Example 2.
＜試験２＞
　実施例１のスキンパック包装用積層フィルム１と比較例２のスキンパック用フィルムを以下の試験方法にて比較評価した。
＜試験方法２＞
　実施例１のスキンパック包装用積層フィルム１又は比較例２のスキンパック用フィルムを用いた以外は試験方法１と同様にして包装体を作製した。
　そして、得られた各包装体を出力５００Ｗの電子レンジ（日立アプライアンス（株）／　ＭＲＯ－ＪＦ６）で２分間加熱した。この試験を５回行い評価した。 <Test 2>
The laminated film 1 for skin pack packaging of Example 1 and the film for skin pack of Comparative Example 2 were comparatively evaluated by the following test methods.
<Test method 2>
A package was produced in the same manner as in Test Method 1 except that the laminated film 1 for skin pack packaging of Example 1 or the film for skin pack of Comparative Example 2 was used.
Each obtained package was heated in a microwave oven (Hitachi Appliances Co., Ltd./MRO-JF6) with an output of 500 W for 2 minutes. This test was conducted 5 times and evaluated.
＜試験中の状態と判定２＞
　表４の通り、加熱中及び加熱後の包装体の状態を調査し判定基準とした。
Figure JPOXMLDOC01-appb-T000004
 <During testing and judgment 2>
As shown in Table 4, the state of the package during and after heating was investigated and used as a criterion.
Figure JPOXMLDOC01-appb-T000004
＜試験結果２＞
　試験２を５回繰り返した試験結果を表５にまとめた。
Figure JPOXMLDOC01-appb-T000005
 <Test result 2>
The test results obtained by repeating Test 2 five times are summarized in Table 5.
Figure JPOXMLDOC01-appb-T000005
　　　１　　第１フィルム
　　　２　　第２フィルム
　　　３　　貫通部
　　　４　　スキンパック包装用積層フィルム
　　　５　　底材
　　　６　　被包装物 DESCRIPTION OF SYMBOLS 1 1st film 2 2nd film 3 Penetration part 4 Laminated film for skin pack packaging 5 Bottom material 6 Package

Claims (10)

  1. 　貫通部を有する樹脂製の第１フィルムと、第１フィルムよりも低い延伸倍率を有するか又は未延伸からなる樹脂製の第２フィルムと、を層間剥離可能な状態で貼り合わせたことを特徴とするスキンパック包装用積層フィルム。 The first film made of resin having a penetrating part and the second film made of resin having a lower draw ratio than that of the first film or made of unstretched are bonded together in a state in which delamination is possible. Laminated film for skin pack packaging.
  2. 　前記第２フィルムがスキンパックフィルムであることを特徴とする請求項１に記載のスキンパック包装用積層フィルム。 The laminated film for skin pack packaging according to claim 1, wherein the second film is a skin pack film.
  3. 　前記第１フィルムと前記第２フィルムとは、剥離層を介して貼り合わされていることを特徴とする請求項１又は２に記載のスキンパック包装用積層フィルム。 The laminated film for skin pack packaging according to claim 1 or 2, wherein the first film and the second film are bonded together via a release layer.
  4. 　前記第１フィルムと前記第２フィルムとは、剥離層及び接着層を介して貼り合わされていることを特徴とする請求項１又は２に記載のスキンパック包装用積層フィルム。 The laminated film for skin pack packaging according to claim 1 or 2, wherein the first film and the second film are bonded together through a release layer and an adhesive layer.
  5. 　前記第１フィルムと前記第２フィルムの間に接着層が部分的に介在することを特徴とする請求項１、２及び４のいずれかに記載のスキンパック包装用積層フィルム。 The laminated film for skin pack packaging according to any one of claims 1, 2, and 4, wherein an adhesive layer is partially interposed between the first film and the second film.
  6. 　前記第１フィルム及び／又は前記第２フィルムの一部又は全部に凹凸が施されていることを特徴とする請求項１～５のいずれかに記載のスキンパック包装用積層フィルム。 The laminated film for skin pack packaging according to any one of claims 1 to 5, wherein a part or all of the first film and / or the second film is uneven.
  7. 　前記第２フィルムがガスバリア性を有することを特徴とする請求項１～６のいずれかに記載のスキンパック包装用積層フィルム。 The laminated film for skin pack packaging according to any one of claims 1 to 6, wherein the second film has gas barrier properties.
  8. 　フランジ部を有するトレー状の底材に、被包装物が樹脂製の第２フィルムによってスキンパック包装され、かつ、前記底材のフランジ部と略平行に樹脂製の第１フィルムが蓋フィルムとして保持された包装体であって、前記第１フィルムが貫通部を有することを特徴とする包装体。 The object to be packaged is skin-packed with a resin-made second film on a tray-like bottom material having a flange portion, and the resin-made first film is held as a lid film substantially parallel to the flange portion of the bottom material. A packaged body, wherein the first film has a penetrating portion.
  9. 　前記底材がガスバリア性を有する請求項８に記載の包装体。 The package according to claim 8, wherein the bottom material has gas barrier properties.
  10. 　フランジ部を有するトレー状の底材と、前記底材に載置された被包装物と、請求項１～７のいずれかに記載のスキンパック包装用積層フィルムと、をチャンバー内に用意する工程と、
    　前記スキンパック包装用積層フィルムを加熱して軟化させる工程と、
    　前記チャンバー内を真空にする工程と、
    　軟化した前記スキンパック包装用積層フィルムを前記底材のフランジ部に近接させ、前記スキンパック包装用積層フィルムを前記フランジ部に圧着させる工程と、
    　前記チャンバー内の真空を解除することによって、大気圧により前記スキンパック包装用積層フィルムの第１フィルムと第２フィルムとを層間剥離させ、第１フィルムをトレー状の底材の蓋フィルムとして第２フィルムの上部位置に保持させ、第２フィルムを前記被包装物の表面に沿うように延伸させて密着させる工程と、
    を有することを特徴とする包装体の製造方法。     A step of preparing in a chamber a tray-like bottom material having a flange portion, an article to be packaged placed on the bottom material, and a laminated film for skin pack packaging according to any one of claims 1 to 7. When,
    Heating and softening the laminated film for skin pack packaging;
    Vacuuming the chamber;
    The step of bringing the softened laminated film for skin pack packaging close to the flange portion of the bottom material, and crimping the laminated film for skin pack packaging to the flange portion;
    By releasing the vacuum in the chamber, the first film and the second film of the laminated film for skin pack packaging are delaminated by atmospheric pressure, and the first film is used as a lid film for a tray-like bottom material. Holding the film at the upper position, stretching the second film along the surface of the article to be packaged, and attaching the second film;
    A method for producing a package comprising the steps of:
PCT/JP2017/007741 2016-04-26 2017-02-28 Laminated film for skin pack packaging, packaging body, and manufacturing method for packaging body WO2017187766A1 (en)

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JP2016087819 2016-04-26
JP2016-087819 2016-04-26

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4886083U (en) * 1972-01-19 1973-10-18
JPH0435665A (en) * 1990-05-31 1992-02-06 Taisho Pharmaceut Co Ltd Suppository mould packing and container for suppository
US5103618A (en) * 1986-08-04 1992-04-14 Seawell Corporation N.V. Packaging
JPH106428A (en) * 1996-06-19 1998-01-13 Dainippon Printing Co Ltd Material for vacuum-absorbing lid and use thereof
JP2005225925A (en) * 2004-02-10 2005-08-25 Jsr Corp Carrier film and carrier member
US20120005988A1 (en) * 2008-01-23 2012-01-12 Curwood, Inc. Vacuum Skin Packaging Laminate, Package and Process for Using Same

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4886083U (en) * 1972-01-19 1973-10-18
US5103618A (en) * 1986-08-04 1992-04-14 Seawell Corporation N.V. Packaging
JPH0435665A (en) * 1990-05-31 1992-02-06 Taisho Pharmaceut Co Ltd Suppository mould packing and container for suppository
JPH106428A (en) * 1996-06-19 1998-01-13 Dainippon Printing Co Ltd Material for vacuum-absorbing lid and use thereof
JP2005225925A (en) * 2004-02-10 2005-08-25 Jsr Corp Carrier film and carrier member
US20120005988A1 (en) * 2008-01-23 2012-01-12 Curwood, Inc. Vacuum Skin Packaging Laminate, Package and Process for Using Same

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