WO2020013048A1 - Three-dimensional processing method for laminated film and apparatus therefor - Google Patents
Three-dimensional processing method for laminated film and apparatus therefor Download PDFInfo
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- WO2020013048A1 WO2020013048A1 PCT/JP2019/026452 JP2019026452W WO2020013048A1 WO 2020013048 A1 WO2020013048 A1 WO 2020013048A1 JP 2019026452 W JP2019026452 W JP 2019026452W WO 2020013048 A1 WO2020013048 A1 WO 2020013048A1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
- B31B50/59—Shaping sheet material under pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B70/00—Making flexible containers, e.g. envelopes or bags
- B31B70/74—Auxiliary operations
- B31B70/88—Printing; Embossing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
- B31F1/07—Embossing, i.e. producing impressions formed by locally deep-drawing, e.g. using rolls provided with complementary profiles
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- Labels such as pouches for filling semi-fluid or fluid contents such as foods, beverages, and detergents, and seal materials used as lids for cup-shaped or tray-shaped containers are printed with letters such as product names.
- letters such as product names.
- characters and designs are emphasized by, for example, making the printing three-dimensional.
- a bag-like container with an embossed pattern is formed by forming a bag-shaped container using a soft packaging material and partially heating and cooling a predetermined portion of the bag-shaped container to form an embossed pattern.
- a molding method has been proposed.
- Patent Literature 1 there is a problem that it takes time for heating and cooling, resulting in poor productivity.
- the compression molding is performed by compression-molding a laminated film having at least an inner film having a large innermost surface elongation and an outer film having a small elongation on the outer surface by a molding section in the thickness direction of the laminated film.
- the formed processed portion is made of a material capable of exhibiting a wider elastic deformation region than a widest elastic deformation region in a plane direction of a film constituting the laminated film.
- the forming section is installed on a forming roll of a rotary processing apparatus including an opposing forming roll and an anvil roll, 2.
- the processing width of the forming part is 6 mm or more, 3.
- the laminated film has a metal deposition layer between the inner film and the outer film, 4.
- the stretched outer film is a stretched film made of nylon or polyester, and the stretched inner film is a film made of polyolefin, 5.
- the molded portion is made of a polymer compound having a tensile modulus of 2.5 GPa or less, 6.
- the compression amount in the compression molding is 30% or more and 50% or less with respect to the thickness of the laminated film; Is preferred.
- the hologram-like appearance is formed on the overhang. It can be formed.
- the three-dimensional processing method of the present invention is a laminate film having at least an inner film having a large innermost surface elongation and an outer surface film having a small elongation on the outer surface side, which is compression-molded in a thickness direction of the laminated film by a molding section. After the pressure is released, in the method of performing three-dimensional processing so that the compression molded portion protrudes to the outer surface side, the formed processed portion has an elastic deformation region wider than the widest elastic deformation region in the plane direction of the film constituting the laminated film.
- the formed portion is made of a material capable of realizing an elastic deformation region wider than the widest elastic deformation region in the plane direction of the film constituting the laminated film to be used. This makes it possible to sufficiently stretch all the films constituting the laminated film. Therefore, when the laminated film has a two-layer structure of an inner film having a large elongation and an outer film having a small elongation, the elastic deformation region of the inner film having a large elongation is the largest among the films constituting the laminated film.
- the part is formed from a material capable of exhibiting an elastic deformation region wider than the elastic deformation region of the inner film. The specific materials of the laminated film and the forming part will be described later.
- the press processing device uses In the anvil and the rotary processing device, it is preferable that the surface of the anvil roll is formed of a material capable of exhibiting a wider elastic deformation region than the widest elastic deformation region of the film constituting the laminated film, similarly to the forming portion. is there.
- the stretch amount of the laminated film is very large in order to increase the processing width of the overhang portion, particularly in a rotary processing device, since the laminated film is easily affected by the conveyance of the laminated film.
- the three-dimensional processing method of the present invention may be a cold process in which compression molding is performed without heating the laminated film, a hot process in which the laminate film is heated to near the softening point temperature of the inner surface film, or a hot and cold process. It may be performed in an intermediate temperature range (warm). For example, when the inner film is polyethylene, at least the warming of the laminated film to a temperature of 35 to 80 ° C or the heating of a laminated film to a temperature of 80 to 100 ° C may be performed. Do.
- various crosslinked rubbers such as natural rubber, isoprene rubber, butadiene rubber, styrene-butadiene rubber, nitrile rubber, chloroprene rubber, butyl rubber, acrylic rubber, ethylene-propylene rubber, hydrin rubber, urethane rubber, silicone rubber, fluorine rubber, and styrene rubber , Polyolefin-based, polyvinyl chloride-based, polyurethane-based, polyester-based, polyamide-based, polybutadiene-based, trans-polyisoprene-based, fluororubber-based, chlorinated polyethylene-based thermoplastic elastomers, or styrene-, urethane-based, etc.
- Foam materials can be mentioned.
- a polymer compound having a tensile modulus of 2.5 MPa or less can be suitably used.
- the metal deposition layer 23a is formed by randomly depositing a metal (aluminum) 23a on a base film 23b and overcoating the base film 23b. It is immobilized with the agent 23c.
- the metal deposition layer 23a is appropriately collapsed, resulting in the formation of irregularities on the surface. Irregular reflection of light increases, and interference of light occurs, so that a hologram-like appearance can be obtained.
- the metal deposition layer be sufficiently stretched by receiving the tensile stress. Desirably, it is adjacent to high elongation material.
- the laminated film include, but are not limited to, polyethylene film / stretched nylon film, polyethylene film / stretched nylon film / stretched PET film, polyethylene film / stretched PET film / stretched nylon film, polyethylene film / Aluminum evaporated stretched nylon film / stretched PET film, polyethylene film / aluminum evaporated stretched PET film / stretched nylon film, polypropylene film / stretched nylon film, polypropylene film / stretched nylon film / stretched PET film, polypropylene film / stretched PET film / stretched nylon Film, polypropylene film / stretched PET film / stretched nylon Film, polypropylene film / stretched PET film / stretched nylon Film, polypropylene film / aluminum-evaporated stretched nylon film / stretched PET film, polypropylene film / aluminum It can be exemplified Chakuenshin PET film / oriented nylon film or the like.
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Abstract
Provided is a three-dimensional processing method in which a molding processing unit performs cold compression-molding on a laminated film in a thickness direction of the laminated film so as to project a compression-molded portion to an outer surface side, the laminated film having at least an inner surface film having a large elongation on an innermost surface and an outer surface film having a small elongation on an outer surface side , the three-dimensional processing method being characterized in that the molding processing unit is made of a material which can achieve an elastic deformation area wider than the widest elastic deformation area in a plane direction of a film constituting the laminated film. According to the three-dimensional processing method of the present invention, a projection portion having a wide working width can be formed in the compression-molded portion.
Description
本発明は、積層フィルムの立体加工方法に関するものであり、より詳細には、積層フィルムに幅広の張出部を形成可能な立体加工方法及びその装置に関する。
The present invention relates to a three-dimensional processing method for a laminated film, and more particularly, to a three-dimensional processing method capable of forming a wide overhanging part on a laminated film and an apparatus therefor.
食品、飲料、洗剤等の半流動性又は流動性の内容物を充填するためのパウチ等の袋状容器や、カップ状、トレー状容器の蓋として用いられるシール材には、商品名等の文字と共に種々の図柄を配することにより、他社の製品との差別化を図り、商品価値を高めることが要求されている。このような要求を満足するために、印刷を立体的にする等して、文字や図柄を際立たせることが行われている。
例えば下記特許文献１には、軟包材を用いて袋状容器を形成し、この袋状容器の所定部位を部分的に加熱・冷却してエンボス模様を形成する、エンボス模様付き袋状容器の成形方法が提案されている。しかし、特許文献１の方法によれば、加熱や冷却に時間を要し、生産性に劣るという問題があった。 Labels such as pouches for filling semi-fluid or fluid contents such as foods, beverages, and detergents, and seal materials used as lids for cup-shaped or tray-shaped containers are printed with letters such as product names. In addition, by arranging various designs, it is required to differentiate from products of other companies and to enhance commercial value. In order to satisfy such demands, characters and designs are emphasized by, for example, making the printing three-dimensional.
For example, in the followingPatent Document 1, a bag-like container with an embossed pattern is formed by forming a bag-shaped container using a soft packaging material and partially heating and cooling a predetermined portion of the bag-shaped container to form an embossed pattern. A molding method has been proposed. However, according to the method of Patent Literature 1, there is a problem that it takes time for heating and cooling, resulting in poor productivity.
例えば下記特許文献１には、軟包材を用いて袋状容器を形成し、この袋状容器の所定部位を部分的に加熱・冷却してエンボス模様を形成する、エンボス模様付き袋状容器の成形方法が提案されている。しかし、特許文献１の方法によれば、加熱や冷却に時間を要し、生産性に劣るという問題があった。 Labels such as pouches for filling semi-fluid or fluid contents such as foods, beverages, and detergents, and seal materials used as lids for cup-shaped or tray-shaped containers are printed with letters such as product names. In addition, by arranging various designs, it is required to differentiate from products of other companies and to enhance commercial value. In order to satisfy such demands, characters and designs are emphasized by, for example, making the printing three-dimensional.
For example, in the following
また本発明者等により、少なくとも柔らかい内面フィルムと外面側の強度の高い外面フィルムとがラミネートされた積層フィルムを冷間で厚み方向に圧縮成形することにより、当該圧縮成形部を外面側に張り出させるようにした積層フィルムの立体成形方法が提案されている（特許文献２）。この特許文献２には、一対の成形ロールによるロータリー加工装置で積層フィルムを圧縮することにより張出し量の大きな張出部を効率よく成形できることが記載されている。
In addition, the present inventors and the like, at least by cold-compressing a laminated film in which a soft inner film and an outer film having a high strength on the outer surface are laminated in the thickness direction, thereby projecting the compression-molded portion to the outer surface side. A three-dimensional forming method of a laminated film is proposed (Patent Document 2). Patent Literature 2 describes that an overhanging portion having a large overhang can be efficiently formed by compressing a laminated film with a rotary processing device using a pair of forming rolls.
しかしながら、上記特許文献２によればロータリー加工装置を用いて圧縮成形することにより、張出し高さの大きな張出部を形成することができるが、張出部の幅（加工幅）が広い張出部を形成しようとすると、積層フィルムの外面フィルムにクラックが発生したり、積層フィルムが破断するというような問題が生じ、幅の広い張出部を成形することができなかった。
However, according to the above-mentioned Patent Document 2, it is possible to form an overhang portion having a large overhang height by performing compression molding using a rotary processing apparatus, but the overhang portion has a wide overhang (working width). Attempts to form the portion caused cracks in the outer surface film of the laminated film, or caused problems such as breakage of the laminated film, and it was not possible to form a wide overhang.
従って本発明の目的は、積層フィルムを圧縮成形することにより、被圧縮成形部に加工幅の広い張出部を形成可能な立体加工方法を提供することである。
本発明の他の目的は、金属蒸着層を備えた積層フィルム用いて、ホログラム調外観を有する加飾性の高い張出部を形成可能な立体加工方法を提供することである。 Accordingly, an object of the present invention is to provide a three-dimensional processing method capable of forming a projecting portion having a wide processing width in a compression-molded portion by compression-molding a laminated film.
Another object of the present invention is to provide a three-dimensional processing method capable of forming a protruding portion having a holographic appearance and high decorativeness using a laminated film provided with a metal vapor deposition layer.
本発明の他の目的は、金属蒸着層を備えた積層フィルム用いて、ホログラム調外観を有する加飾性の高い張出部を形成可能な立体加工方法を提供することである。 Accordingly, an object of the present invention is to provide a three-dimensional processing method capable of forming a projecting portion having a wide processing width in a compression-molded portion by compression-molding a laminated film.
Another object of the present invention is to provide a three-dimensional processing method capable of forming a protruding portion having a holographic appearance and high decorativeness using a laminated film provided with a metal vapor deposition layer.
本発明によれば、最内面の伸びの大きい内面フィルムと外面側の伸びの小さい外面フィルムとを少なくとも有する積層フィルムを、該積層フィルムの厚み方向に成形加工部により圧縮成形することにより、該圧縮成形部を外面側に張出させる立体加工方法において、前記成形加工部が、前記積層フィルムを構成するフィルムの平面方向における最も広い弾性変形領域よりも広い弾性変形領域を発現し得る材料から成ることを特徴とする立体加工方法が提供される。
According to the present invention, the compression molding is performed by compression-molding a laminated film having at least an inner film having a large innermost surface elongation and an outer film having a small elongation on the outer surface by a molding section in the thickness direction of the laminated film. In the three-dimensional processing method for projecting a formed portion to an outer surface side, the formed processed portion is made of a material capable of exhibiting a wider elastic deformation region than a widest elastic deformation region in a plane direction of a film constituting the laminated film. A three-dimensional processing method is provided.
本発明の立体加工方法においては、
１．前記成形加工部が、相対する成形ロール及びアンビルロールを備えた回転加工装置の成形ロールに設置されていること、
２．前記成形加工部の加工幅が、６ｍｍ以上であること、
３．前記積層フィルムが、内面フィルムと外面フィルムの間に金属蒸着層を有すること、
４．前記伸びの小さい外面フィルムが、ナイロン又はポリエステルから成る延伸フィルムであり、前記伸びの大きい内面フィルムが、ポリオレフィンから成るフィルムであること、
５．前記成形加工部が、引張弾性率が２．５ＧＰａ以下の高分子化合物から成ること、
６．前記圧縮成形における圧縮量が、積層フィルムの厚みに対して３０％以上５０％以下であること、
が好適である。 In the three-dimensional processing method of the present invention,
1. The forming section is installed on a forming roll of a rotary processing apparatus including an opposing forming roll and an anvil roll,
2. The processing width of the forming part is 6 mm or more,
3. The laminated film has a metal deposition layer between the inner film and the outer film,
4. The stretched outer film is a stretched film made of nylon or polyester, and the stretched inner film is a film made of polyolefin,
5. The molded portion is made of a polymer compound having a tensile modulus of 2.5 GPa or less,
6. The compression amount in the compression molding is 30% or more and 50% or less with respect to the thickness of the laminated film;
Is preferred.
１．前記成形加工部が、相対する成形ロール及びアンビルロールを備えた回転加工装置の成形ロールに設置されていること、
２．前記成形加工部の加工幅が、６ｍｍ以上であること、
３．前記積層フィルムが、内面フィルムと外面フィルムの間に金属蒸着層を有すること、
４．前記伸びの小さい外面フィルムが、ナイロン又はポリエステルから成る延伸フィルムであり、前記伸びの大きい内面フィルムが、ポリオレフィンから成るフィルムであること、
５．前記成形加工部が、引張弾性率が２．５ＧＰａ以下の高分子化合物から成ること、
６．前記圧縮成形における圧縮量が、積層フィルムの厚みに対して３０％以上５０％以下であること、
が好適である。 In the three-dimensional processing method of the present invention,
1. The forming section is installed on a forming roll of a rotary processing apparatus including an opposing forming roll and an anvil roll,
2. The processing width of the forming part is 6 mm or more,
3. The laminated film has a metal deposition layer between the inner film and the outer film,
4. The stretched outer film is a stretched film made of nylon or polyester, and the stretched inner film is a film made of polyolefin,
5. The molded portion is made of a polymer compound having a tensile modulus of 2.5 GPa or less,
6. The compression amount in the compression molding is 30% or more and 50% or less with respect to the thickness of the laminated film;
Is preferred.
本発明によればまた、相対する成形ロール及びアンビルロールと、この成形ロールに設けられ、最内面の伸びの大きい内面フィルムと外面側の伸びの小さい外面フィルムとを少なくとも有する積層フィルムを圧縮成形する成形加工部とを備えた、積層フィルムの被圧縮成形部に立体加工を施す回転加工装置において、前記成形加工部が、前記積層フィルムを構成するフィルムの平面方向における最も広い弾性変形領域よりも広い弾性変形領域を発現し得る材料から成ることを特徴とする回転加工装置が提供される。
本発明の回転加工装置においては、前記成形加工部の加工幅が、６ｍｍ以上であることが好適である。 According to the present invention, compression molding is performed on a laminated film having at least an opposing forming roll and an anvil roll, and an inner film provided on the forming roll and having a larger innermost film and a smaller outer film on the outer surface. A rotary processing apparatus that performs a three-dimensional processing on a compression-molded portion of the laminated film, the molding portion being wider than a widest elastic deformation region in a plane direction of the film constituting the laminated film. A rotary processing device is provided, which is made of a material capable of exhibiting an elastic deformation region.
In the rotary processing apparatus of the present invention, it is preferable that the processing width of the forming part is 6 mm or more.
本発明の回転加工装置においては、前記成形加工部の加工幅が、６ｍｍ以上であることが好適である。 According to the present invention, compression molding is performed on a laminated film having at least an opposing forming roll and an anvil roll, and an inner film provided on the forming roll and having a larger innermost film and a smaller outer film on the outer surface. A rotary processing apparatus that performs a three-dimensional processing on a compression-molded portion of the laminated film, the molding portion being wider than a widest elastic deformation region in a plane direction of the film constituting the laminated film. A rotary processing device is provided, which is made of a material capable of exhibiting an elastic deformation region.
In the rotary processing apparatus of the present invention, it is preferable that the processing width of the forming part is 6 mm or more.
本発明の立体加工方法によれば、加工幅が大きい張出部を、積層フィルムを損傷することなく効率よく形成することができる。また加工幅の大きい、なだらかな張出部が形成されるため、樹脂溜りが形成されてしまうことも防止できる。
また本発明の立体加工方法によれば、積層フィルムを２枚重ね合わせた場合に、積層フィルムの一方のみ、或いは積層フィルム両面のいずれの態様においても加工幅の大きな張出部を成形することができると共に、張出部の加工幅を容易に調整することができ、種々のパターンの立体模様を形成することができる。
更に、立体加工を施す積層フィルムとして、内面フィルムと外面フィルムの間に金属蒸着層を有する積層フィルムを用い、加工幅の大きい張出部を形成することによって、ホログラム調の外観を張出部に形成することが可能になる。 According to the three-dimensional processing method of the present invention, a projecting portion having a large processing width can be efficiently formed without damaging the laminated film. Further, since a gentle overhang with a large processing width is formed, it is possible to prevent the formation of a resin pool.
Further, according to the three-dimensional processing method of the present invention, when two laminated films are laminated, it is possible to form a protruding portion having a large processing width in only one of the laminated films or in any aspect of both surfaces of the laminated film. In addition, the processing width of the overhang can be easily adjusted, and three-dimensional patterns of various patterns can be formed.
Furthermore, by using a laminated film having a metal deposition layer between the inner film and the outer film as a laminated film to be subjected to three-dimensional processing, and forming an overhang with a large processing width, the hologram-like appearance is formed on the overhang. It can be formed.
また本発明の立体加工方法によれば、積層フィルムを２枚重ね合わせた場合に、積層フィルムの一方のみ、或いは積層フィルム両面のいずれの態様においても加工幅の大きな張出部を成形することができると共に、張出部の加工幅を容易に調整することができ、種々のパターンの立体模様を形成することができる。
更に、立体加工を施す積層フィルムとして、内面フィルムと外面フィルムの間に金属蒸着層を有する積層フィルムを用い、加工幅の大きい張出部を形成することによって、ホログラム調の外観を張出部に形成することが可能になる。 According to the three-dimensional processing method of the present invention, a projecting portion having a large processing width can be efficiently formed without damaging the laminated film. Further, since a gentle overhang with a large processing width is formed, it is possible to prevent the formation of a resin pool.
Further, according to the three-dimensional processing method of the present invention, when two laminated films are laminated, it is possible to form a protruding portion having a large processing width in only one of the laminated films or in any aspect of both surfaces of the laminated film. In addition, the processing width of the overhang can be easily adjusted, and three-dimensional patterns of various patterns can be formed.
Furthermore, by using a laminated film having a metal deposition layer between the inner film and the outer film as a laminated film to be subjected to three-dimensional processing, and forming an overhang with a large processing width, the hologram-like appearance is formed on the overhang. It can be formed.
（立体加工方法及びその装置）
本発明の立体加工方法は、最内面の伸びの大きい内面フィルムと外面側の伸びの小さい外面フィルムとを少なくとも有する積層フィルムを、該積層フィルムの厚み方向に成形加工部により圧縮成形することで、圧力を解放した後、圧縮成形部を外面側に張り出させるように立体加工する方法において、成形加工部を、積層フィルムを構成するフィルムの平面方向における最も広い弾性変形領域よりも広い弾性変形領域を発現可能な材料から形成することが重要な特徴である。
すなわち、成形加工部の弾性変形領域が、積層フィルムを構成するフィルムの平面方向における最も広い弾性変形領域より広いということは、成形加工部が、積層フィルムを構成する各フィルム（内面フィルム及び外面フィルム、或いは必要により追加される他のフィルム）よりも柔らかく伸長しやすいことを意味している。これにより、圧縮成形に際して成形加工部自体が伸長変形して加工領域を増加させながら積層フィルムを押圧し、積層フィルムの平面方向に効率よく大きな引張作用を付与し、積層フィルムの平面方向の変形領域を広げることができるため、加工幅の大きい張出部を形成することが可能になる。
また成形加工部が圧縮成形に追従して変形することから、積層フィルムへの圧縮応力の印加及び解放による圧力の変化率の急激な変化を防ぐことができ、積層フィルムに形成される張出部にクラックや破断が発生してしまうことが有効に防止されている。
更に、本発明の立体加工方法により形成される張出部は、加工幅が大きいことから、なだらかな張出部であり、そのため張出部の輪郭付近に形成されやすい樹脂溜りが形成されにくいというメリットもある。 (Three-dimensional processing method and its device)
The three-dimensional processing method of the present invention is a laminate film having at least an inner film having a large innermost surface elongation and an outer surface film having a small elongation on the outer surface side, which is compression-molded in a thickness direction of the laminated film by a molding section. After the pressure is released, in the method of performing three-dimensional processing so that the compression molded portion protrudes to the outer surface side, the formed processed portion has an elastic deformation region wider than the widest elastic deformation region in the plane direction of the film constituting the laminated film. It is an important feature to form from a material capable of expressing
That is, the fact that the elastically deformable region of the molded portion is wider than the widest elastically deformable region in the plane direction of the film constituting the laminated film means that the molded portion is formed of each film (the inner film and the outer film) constituting the laminated film. Or other films that are added as needed). As a result, at the time of compression molding, the forming portion itself is elongated and deformed and presses the laminated film while increasing the processing area, effectively applying a large tensile action in the planar direction of the laminated film, and deforming the laminated film in the planar direction. Can be widened, so that an overhang with a large processing width can be formed.
In addition, since the forming portion deforms following the compression molding, it is possible to prevent a sudden change in the rate of change in pressure due to the application and release of the compressive stress to the laminated film, and to form an overhang portion formed on the laminated film. Cracks and breaks are effectively prevented.
Furthermore, the overhang formed by the three-dimensional processing method of the present invention is a gentle overhang because of the large processing width, and therefore, it is difficult to form a resin pool that is likely to be formed near the contour of the overhang. There are also benefits.
本発明の立体加工方法は、最内面の伸びの大きい内面フィルムと外面側の伸びの小さい外面フィルムとを少なくとも有する積層フィルムを、該積層フィルムの厚み方向に成形加工部により圧縮成形することで、圧力を解放した後、圧縮成形部を外面側に張り出させるように立体加工する方法において、成形加工部を、積層フィルムを構成するフィルムの平面方向における最も広い弾性変形領域よりも広い弾性変形領域を発現可能な材料から形成することが重要な特徴である。
すなわち、成形加工部の弾性変形領域が、積層フィルムを構成するフィルムの平面方向における最も広い弾性変形領域より広いということは、成形加工部が、積層フィルムを構成する各フィルム（内面フィルム及び外面フィルム、或いは必要により追加される他のフィルム）よりも柔らかく伸長しやすいことを意味している。これにより、圧縮成形に際して成形加工部自体が伸長変形して加工領域を増加させながら積層フィルムを押圧し、積層フィルムの平面方向に効率よく大きな引張作用を付与し、積層フィルムの平面方向の変形領域を広げることができるため、加工幅の大きい張出部を形成することが可能になる。
また成形加工部が圧縮成形に追従して変形することから、積層フィルムへの圧縮応力の印加及び解放による圧力の変化率の急激な変化を防ぐことができ、積層フィルムに形成される張出部にクラックや破断が発生してしまうことが有効に防止されている。
更に、本発明の立体加工方法により形成される張出部は、加工幅が大きいことから、なだらかな張出部であり、そのため張出部の輪郭付近に形成されやすい樹脂溜りが形成されにくいというメリットもある。 (Three-dimensional processing method and its device)
The three-dimensional processing method of the present invention is a laminate film having at least an inner film having a large innermost surface elongation and an outer surface film having a small elongation on the outer surface side, which is compression-molded in a thickness direction of the laminated film by a molding section. After the pressure is released, in the method of performing three-dimensional processing so that the compression molded portion protrudes to the outer surface side, the formed processed portion has an elastic deformation region wider than the widest elastic deformation region in the plane direction of the film constituting the laminated film. It is an important feature to form from a material capable of expressing
That is, the fact that the elastically deformable region of the molded portion is wider than the widest elastically deformable region in the plane direction of the film constituting the laminated film means that the molded portion is formed of each film (the inner film and the outer film) constituting the laminated film. Or other films that are added as needed). As a result, at the time of compression molding, the forming portion itself is elongated and deformed and presses the laminated film while increasing the processing area, effectively applying a large tensile action in the planar direction of the laminated film, and deforming the laminated film in the planar direction. Can be widened, so that an overhang with a large processing width can be formed.
In addition, since the forming portion deforms following the compression molding, it is possible to prevent a sudden change in the rate of change in pressure due to the application and release of the compressive stress to the laminated film, and to form an overhang portion formed on the laminated film. Cracks and breaks are effectively prevented.
Furthermore, the overhang formed by the three-dimensional processing method of the present invention is a gentle overhang because of the large processing width, and therefore, it is difficult to form a resin pool that is likely to be formed near the contour of the overhang. There are also benefits.
本発明においては、成形加工部は、用いる積層フィルムを構成するフィルムの平面方向における最も広い弾性変形領域よりも広い弾性変形領域を実現可能な材料から成る。これにより、積層フィルムを構成するすべてのフィルムを十分に引き伸ばすことが可能になる。従って、積層フィルムが伸びの大きい内面フィルムと伸びの小さい外面フィルムの２層構成の場合には、伸びの大きい内面フィルムの弾性変形領域が積層フィルムを構成するフィルムの中では最も広いので、成形加工部は、内面フィルムの弾性変形領域よりも広い弾性変形領域を発現可能な材料から形成する。尚、積層フィルム及び成形加工部の具体的な材料については後述する。
本発明の立体加工方法により形成される張出部は、同じ加工幅を有する金属素材から成る成形加工部を用いて形成された張出部に比して、１．１～５倍の加工幅を形成することができる。積層フィルムの組成や厚み、圧縮成形の条件などによって一概に規定できないが、１０～５０ｍｍの加工幅を有し、加工高さ５～２０ｍｍの張出し部を形成することができる。 In the present invention, the formed portion is made of a material capable of realizing an elastic deformation region wider than the widest elastic deformation region in the plane direction of the film constituting the laminated film to be used. This makes it possible to sufficiently stretch all the films constituting the laminated film. Therefore, when the laminated film has a two-layer structure of an inner film having a large elongation and an outer film having a small elongation, the elastic deformation region of the inner film having a large elongation is the largest among the films constituting the laminated film. The part is formed from a material capable of exhibiting an elastic deformation region wider than the elastic deformation region of the inner film. The specific materials of the laminated film and the forming part will be described later.
The overhang formed by the three-dimensional processing method of the present invention has a processing width that is 1.1 to 5 times as large as the overhang formed by using a forming part made of a metal material having the same processing width. Can be formed. Although it cannot be specified unconditionally depending on the composition and thickness of the laminated film, the conditions of compression molding, etc., it is possible to form an overhang having a processing width of 10 to 50 mm and a processing height of 5 to 20 mm.
本発明の立体加工方法により形成される張出部は、同じ加工幅を有する金属素材から成る成形加工部を用いて形成された張出部に比して、１．１～５倍の加工幅を形成することができる。積層フィルムの組成や厚み、圧縮成形の条件などによって一概に規定できないが、１０～５０ｍｍの加工幅を有し、加工高さ５～２０ｍｍの張出し部を形成することができる。 In the present invention, the formed portion is made of a material capable of realizing an elastic deformation region wider than the widest elastic deformation region in the plane direction of the film constituting the laminated film to be used. This makes it possible to sufficiently stretch all the films constituting the laminated film. Therefore, when the laminated film has a two-layer structure of an inner film having a large elongation and an outer film having a small elongation, the elastic deformation region of the inner film having a large elongation is the largest among the films constituting the laminated film. The part is formed from a material capable of exhibiting an elastic deformation region wider than the elastic deformation region of the inner film. The specific materials of the laminated film and the forming part will be described later.
The overhang formed by the three-dimensional processing method of the present invention has a processing width that is 1.1 to 5 times as large as the overhang formed by using a forming part made of a metal material having the same processing width. Can be formed. Although it cannot be specified unconditionally depending on the composition and thickness of the laminated film, the conditions of compression molding, etc., it is possible to form an overhang having a processing width of 10 to 50 mm and a processing height of 5 to 20 mm.
図１は、プレス加工装置を用いた、本発明の立体加工方法を説明するための図である。図１に示すように、内面フィルム１ａ及び外面フィルム１ｂから成る積層フィルム１が有する最も広い弾性変形領域、すなわち内面フィルム１ａの弾性変形領域よりも弾性変形領域が広い材料から成る成形加工部２が設けられたパンチ３と、アンビル４の間に積層フィルム１を設置して、積層フィルム１の厚み方向に上方から押圧する。これにより成形加工部２は図１の矢印の方向（左右方向）に伸長変形するため、この成形加工部２に押圧される積層フィルム１の外面フィルム１ｂ及び内面フィルム１ａの両方を図１の矢印の方向（引張方向）に内面フィルム１ａの弾性変形領域よりも大きく引き伸ばす。その後、圧縮力が解放されると、積層フィルム１の外面フィルム１ｂ及び内面フィルム１ａは復元の程度に差が生じて、結果として、図１（Ｂ）に示すように、加工幅の大きな張出部５を形成することが可能になる。
しかも、成形加工部２は、成形加工部２の伸長変形に追従して伸長すると共に、圧縮力の解放により復元するため、同様の加工幅を有する金属製加工部を用いた場合のように、積層フィルムにクラックや破断を発生することがない。 FIG. 1 is a diagram for explaining a three-dimensional processing method of the present invention using a press processing device. As shown in FIG. 1, the largest elastic deformation region of thelaminated film 1 composed of the inner film 1a and the outer film 1b, that is, the forming portion 2 made of a material having a wider elastic deformation region than the elastic deformation region of the inner film 1a is provided. The laminated film 1 is placed between the punch 3 and the anvil 4 provided and pressed from above in the thickness direction of the laminated film 1. As a result, the forming section 2 is extended and deformed in the direction of the arrow (left-right direction) in FIG. 1, so that both the outer film 1 b and the inner film 1 a of the laminated film 1 pressed by the forming section 2 are indicated by arrows in FIG. In the direction (tensile direction) of the inner film 1a. Thereafter, when the compressive force is released, the outer film 1b and the inner film 1a of the laminated film 1 have a difference in the degree of restoration, and as a result, as shown in FIG. The part 5 can be formed.
Moreover, since the formingpart 2 extends following the elongation deformation of the forming part 2 and is restored by releasing the compressive force, as in the case of using a metal processing part having the same working width, There is no crack or break in the laminated film.
しかも、成形加工部２は、成形加工部２の伸長変形に追従して伸長すると共に、圧縮力の解放により復元するため、同様の加工幅を有する金属製加工部を用いた場合のように、積層フィルムにクラックや破断を発生することがない。 FIG. 1 is a diagram for explaining a three-dimensional processing method of the present invention using a press processing device. As shown in FIG. 1, the largest elastic deformation region of the
Moreover, since the forming
本発明の立体加工方法においては、上述したプレス加工装置でも張出し加工幅の大きな張出部を形成することができるが、図２に示すような、成形加工部１０を有する成形ロール１１及びアンビルロール１２から成る回転加工装置により立体加工を行うことが特に好ましい。すなわち、上述したプレス加工装置による場合に比して、回転加工装置においては、加工位置が回転方向に移動するため、回転方向Ｒに積層フィルムを送り出す引っ張り力が作用すると同時に、積層フィルムの噛みこみ側にもフィルムを押し出す引張作用が累積する結果、フィルムに作用する引張力が大きくなるため、効率よく加工幅の大きい張出部を成形することができる。
In the three-dimensional processing method of the present invention, the overhanging portion having a large overhanging processing width can be formed by the above-described press working apparatus. However, as illustrated in FIG. It is particularly preferable to carry out three-dimensional processing by a rotary processing device comprising 12 parts. That is, as compared with the case of the above-described press working device, in the rotary working device, the processing position moves in the rotation direction, so that the pulling force for sending out the laminated film in the rotation direction R acts and at the same time, the laminated film bites. As a result of the accumulation of the tensile action for pushing the film to the side as well, the tensile force acting on the film increases, so that an overhang with a large processing width can be efficiently formed.
本発明においては、成形加工部の加工幅が６ｍｍ以上、特に７～３０ｍｍの範囲にあることが好適である。上記範囲よりも加工幅が小さい場合には、上記範囲にある場合に比して加工幅の大きな張出部を形成することができず、一方上記範囲よりも加工幅が大きい場合には、上記範囲にある場合に比して、十分な張出高さを有する張出部を形成することができない。尚、成形加工部の加工幅とは、フィルムに当接する加工面の最小距離であり、成形加工部の長さ（添付図面における奥行方向）は形成する張出部の形状によって適宜変更できる。
また圧縮量は、用いる積層フィルムの厚みの３０～５０％の圧縮量で圧縮成形する。圧縮量は回転加工装置においては、成形加工部とアンビルロールのクリアランスを調整することにより設定できる。圧縮量が上記範囲よりも小さい場合には、十分な張出部を形成することができないおそれがあり、圧縮量が上記範囲より大きい場合には、積層フィルムにクラックが発生したり、或いは破断されてしまうおそれがある。 In the present invention, it is preferable that the processing width of the formed processing portion is 6 mm or more, particularly in the range of 7 to 30 mm. When the processing width is smaller than the above range, it is not possible to form a protruding portion having a larger processing width than when the processing width is in the above range. On the other hand, when the processing width is larger than the above range, An overhang portion having a sufficient overhang height cannot be formed as compared with the case where it is within the range. The working width of the forming part is the minimum distance of the processing surface that comes into contact with the film, and the length of the forming part (the depth direction in the attached drawings) can be appropriately changed depending on the shape of the overhang to be formed.
The compression molding is performed at a compression amount of 30 to 50% of the thickness of the laminated film to be used. The amount of compression can be set by adjusting the clearance between the forming section and the anvil roll in the rotary processing apparatus. If the compression amount is smaller than the above range, there is a possibility that a sufficient overhang portion may not be formed, and if the compression amount is larger than the above range, cracks may occur in the laminated film, or the laminated film may be broken. There is a risk that it will.
また圧縮量は、用いる積層フィルムの厚みの３０～５０％の圧縮量で圧縮成形する。圧縮量は回転加工装置においては、成形加工部とアンビルロールのクリアランスを調整することにより設定できる。圧縮量が上記範囲よりも小さい場合には、十分な張出部を形成することができないおそれがあり、圧縮量が上記範囲より大きい場合には、積層フィルムにクラックが発生したり、或いは破断されてしまうおそれがある。 In the present invention, it is preferable that the processing width of the formed processing portion is 6 mm or more, particularly in the range of 7 to 30 mm. When the processing width is smaller than the above range, it is not possible to form a protruding portion having a larger processing width than when the processing width is in the above range. On the other hand, when the processing width is larger than the above range, An overhang portion having a sufficient overhang height cannot be formed as compared with the case where it is within the range. The working width of the forming part is the minimum distance of the processing surface that comes into contact with the film, and the length of the forming part (the depth direction in the attached drawings) can be appropriately changed depending on the shape of the overhang to be formed.
The compression molding is performed at a compression amount of 30 to 50% of the thickness of the laminated film to be used. The amount of compression can be set by adjusting the clearance between the forming section and the anvil roll in the rotary processing apparatus. If the compression amount is smaller than the above range, there is a possibility that a sufficient overhang portion may not be formed, and if the compression amount is larger than the above range, cracks may occur in the laminated film, or the laminated film may be broken. There is a risk that it will.
本発明の立体加工方法においては、加工幅が大きく且つ高さのある張出部を形成できるが、更に効率よく加工幅が大きく且つ高さのある張出部を形成するためには、成形加工部の表面に粗面加工を施す等、成形加工部と積層フィルムの間の摩擦力を増加させてもよい。すなわち、成形加工部と積層フィルムの摩擦力が大きくなると積層フィルムが成形加工部に拘束されることにより、積層フィルムにかかる引張力が大きくなるため、より大きな加工幅で高さのある張出部を形成することができる。
In the three-dimensional processing method of the present invention, an overhang having a large processing width and a high height can be formed. However, in order to more efficiently form an overhang with a large processing width and a high height, a forming process The frictional force between the molded part and the laminated film may be increased, for example, by roughening the surface of the part. In other words, when the frictional force between the molded portion and the laminated film increases, the laminated film is constrained by the molded portion, and the tensile force applied to the laminated film increases. Can be formed.
本発明の立体加工方法における、積層フィルムの圧縮成形は、前述した本発明者等による特許文献２記載の立体加工方法と同様にして成形することができる。
本発明の立体加工方法においても、積層フィルムは、それ単独（１枚）のみならず、積層フィルムを２枚重ね合わせた状態で立体加工方法を適用できる。フィルムを２枚重ね合わせる場合、成形加工部側の積層フィルムのみに張出加工部が形成される態様、或いは両方の積層フィルムに外面フィルム側に張出した張出加工部が形成される態様があるが、積層フィルムに作用する圧縮荷重を調整することにより何れの態様にも加工可能である。
また、２枚の積層フィルムを重ね合わせ、両方の積層フィルムにそれぞれ、相対する方向に加工幅が大きく且つ加工高さの高い張出部を成形する場合には、プレス加工装置では成形加工部とアンビル、回転加工装置においてはアンビルロールの表面を、成形加工部と同様に、積層フィルムを構成するフィルムの最も広い弾性変形領域よりも広い弾性変形領域を発現可能な材料から形成することが好適である。
尚、本発明の立体加工方法においては、張出部の加工幅を大きくするために積層フィルムの伸ばし量が非常に大きく、特に回転加工装置においては積層フィルムの搬送の影響を受けやすいことから、積層フィルムを２枚重ね合わせた状態、例えば、積層フィルムの内面側ヒートシール性フィルム同士を重ね合わせたパウチ等の状態で加工することが特に望ましい。
本発明の立体加工方法は、積層フィルムを加熱することなく圧縮成形を行う冷間であってもよいし、内面フィルムの軟化点温度近傍まで加熱して行う熱間、あるいは冷間と熱間の中間の温度域（温間）で行ってもよい。例えば、内面フィルムがポリエチレンの場合には少なくとも積層フィルムを３５～８０℃の温度に加熱する温間、８０～１００℃の温度に加熱する熱間であってもよく、必要により圧縮成形後に冷却を行う。温間または熱間で圧縮成形を行う場合は、より小さい圧縮荷重で立体加工が可能となり設備が簡素化できる。また、冷間で圧縮成形を行う場合は、積層フィルムの加熱工程や圧縮成形後の冷却工程が不要であるため効率よく立体加工が可能となる。 The compression molding of the laminated film in the three-dimensional processing method of the present invention can be performed in the same manner as the three-dimensional processing method described inPatent Document 2 by the present inventors described above.
Also in the three-dimensional processing method of the present invention, the three-dimensional processing method can be applied not only to a single film (one sheet) but also to a state in which two laminated films are stacked. When two films are laminated, there is a mode in which the overhanging portion is formed only on the laminated film on the forming portion, or a mode in which the overhanging portion which protrudes toward the outer film side is formed on both laminated films. However, by adjusting the compressive load acting on the laminated film, it can be processed into any mode.
In addition, when two laminated films are superimposed, and when forming an overhang with a large processing width and a high processing height in the opposite direction on both laminated films, the press processing device uses In the anvil and the rotary processing device, it is preferable that the surface of the anvil roll is formed of a material capable of exhibiting a wider elastic deformation region than the widest elastic deformation region of the film constituting the laminated film, similarly to the forming portion. is there.
In addition, in the three-dimensional processing method of the present invention, the stretch amount of the laminated film is very large in order to increase the processing width of the overhang portion, particularly in a rotary processing device, since the laminated film is easily affected by the conveyance of the laminated film. It is particularly desirable to process in a state in which two laminated films are laminated, for example, in a state of a pouch or the like in which the heat-sealing films on the inner surface side of the laminated film are laminated.
The three-dimensional processing method of the present invention may be a cold process in which compression molding is performed without heating the laminated film, a hot process in which the laminate film is heated to near the softening point temperature of the inner surface film, or a hot and cold process. It may be performed in an intermediate temperature range (warm). For example, when the inner film is polyethylene, at least the warming of the laminated film to a temperature of 35 to 80 ° C or the heating of a laminated film to a temperature of 80 to 100 ° C may be performed. Do. When compression molding is performed during warm or hot, three-dimensional processing can be performed with a smaller compression load, and the equipment can be simplified. In the case where compression molding is performed in a cold state, a three-dimensional processing can be performed efficiently because a heating step of the laminated film and a cooling step after compression molding are unnecessary.
本発明の立体加工方法においても、積層フィルムは、それ単独（１枚）のみならず、積層フィルムを２枚重ね合わせた状態で立体加工方法を適用できる。フィルムを２枚重ね合わせる場合、成形加工部側の積層フィルムのみに張出加工部が形成される態様、或いは両方の積層フィルムに外面フィルム側に張出した張出加工部が形成される態様があるが、積層フィルムに作用する圧縮荷重を調整することにより何れの態様にも加工可能である。
また、２枚の積層フィルムを重ね合わせ、両方の積層フィルムにそれぞれ、相対する方向に加工幅が大きく且つ加工高さの高い張出部を成形する場合には、プレス加工装置では成形加工部とアンビル、回転加工装置においてはアンビルロールの表面を、成形加工部と同様に、積層フィルムを構成するフィルムの最も広い弾性変形領域よりも広い弾性変形領域を発現可能な材料から形成することが好適である。
尚、本発明の立体加工方法においては、張出部の加工幅を大きくするために積層フィルムの伸ばし量が非常に大きく、特に回転加工装置においては積層フィルムの搬送の影響を受けやすいことから、積層フィルムを２枚重ね合わせた状態、例えば、積層フィルムの内面側ヒートシール性フィルム同士を重ね合わせたパウチ等の状態で加工することが特に望ましい。
本発明の立体加工方法は、積層フィルムを加熱することなく圧縮成形を行う冷間であってもよいし、内面フィルムの軟化点温度近傍まで加熱して行う熱間、あるいは冷間と熱間の中間の温度域（温間）で行ってもよい。例えば、内面フィルムがポリエチレンの場合には少なくとも積層フィルムを３５～８０℃の温度に加熱する温間、８０～１００℃の温度に加熱する熱間であってもよく、必要により圧縮成形後に冷却を行う。温間または熱間で圧縮成形を行う場合は、より小さい圧縮荷重で立体加工が可能となり設備が簡素化できる。また、冷間で圧縮成形を行う場合は、積層フィルムの加熱工程や圧縮成形後の冷却工程が不要であるため効率よく立体加工が可能となる。 The compression molding of the laminated film in the three-dimensional processing method of the present invention can be performed in the same manner as the three-dimensional processing method described in
Also in the three-dimensional processing method of the present invention, the three-dimensional processing method can be applied not only to a single film (one sheet) but also to a state in which two laminated films are stacked. When two films are laminated, there is a mode in which the overhanging portion is formed only on the laminated film on the forming portion, or a mode in which the overhanging portion which protrudes toward the outer film side is formed on both laminated films. However, by adjusting the compressive load acting on the laminated film, it can be processed into any mode.
In addition, when two laminated films are superimposed, and when forming an overhang with a large processing width and a high processing height in the opposite direction on both laminated films, the press processing device uses In the anvil and the rotary processing device, it is preferable that the surface of the anvil roll is formed of a material capable of exhibiting a wider elastic deformation region than the widest elastic deformation region of the film constituting the laminated film, similarly to the forming portion. is there.
In addition, in the three-dimensional processing method of the present invention, the stretch amount of the laminated film is very large in order to increase the processing width of the overhang portion, particularly in a rotary processing device, since the laminated film is easily affected by the conveyance of the laminated film. It is particularly desirable to process in a state in which two laminated films are laminated, for example, in a state of a pouch or the like in which the heat-sealing films on the inner surface side of the laminated film are laminated.
The three-dimensional processing method of the present invention may be a cold process in which compression molding is performed without heating the laminated film, a hot process in which the laminate film is heated to near the softening point temperature of the inner surface film, or a hot and cold process. It may be performed in an intermediate temperature range (warm). For example, when the inner film is polyethylene, at least the warming of the laminated film to a temperature of 35 to 80 ° C or the heating of a laminated film to a temperature of 80 to 100 ° C may be performed. Do. When compression molding is performed during warm or hot, three-dimensional processing can be performed with a smaller compression load, and the equipment can be simplified. In the case where compression molding is performed in a cold state, a three-dimensional processing can be performed efficiently because a heating step of the laminated film and a cooling step after compression molding are unnecessary.
（成形加工部）
前述したとおり、本発明の立体加工方法においては、用いる積層フィルムを構成する樹脂フィルムの平面方向における最も広い弾性変形領域よりも広い弾性変形領域を発現可能な弾性材料から成形加工部を形成することが重要である。成形加工部は、その全体をこのような弾性材料から形成してもよいし、或いは成形加工部のフィルムと当接する加工面付近を弾性材料から形成してもよく、弾性材料から形成される成形加工部の厚みによっても、成形加工部の弾性変形領域の広さを制御することができる。
成形加工部を形成可能な弾性材料としては、後述する積層フィルムを用いる場合には、これに限定されないが、以下の弾性材料を使用することができる。
例えば、天然ゴム、イソプレンゴム、ブタジエンゴム、スチレン－ブタジエンゴム、ニトリルゴム、クロロプレンゴム、ブチルゴム、アクリルゴム、エチレン－プロピレンゴム、ヒドリンゴム、ウレタンゴム、シリコーンゴム、フッ素ゴム等の各種架橋ゴム、スチレン系、ポリオレフィン系、ポリ塩化ビニル系、ポリウレタン系、ポリエステル系、ポリアミド系、ポリブタジエン系、トランスポリイソプレン系、フッ素ゴム系、塩素化ポリエチレン系等の各種熱可塑性エラストマー、或いはスチレン系、ウレタン系等の各種発泡材料を挙げることができる。
これらの中でも、引張弾性率が２．５ＭＰａ以下の高分子化合物等を好適に用いることができる。 (Forming part)
As described above, in the three-dimensional processing method of the present invention, in the three-dimensional processing method, the molded portion is formed from an elastic material capable of expressing an elastic deformation region wider than the widest elastic deformation region in the planar direction of the resin film constituting the laminated film to be used. is important. The forming part may be formed entirely of such an elastic material, or may be formed of an elastic material in the vicinity of a processing surface that comes into contact with the film of the forming part. The width of the elastically deformable region of the forming part can also be controlled by the thickness of the forming part.
When a laminated film described later is used, the elastic material that can form the molded portion is not limited to this, but the following elastic materials can be used.
For example, various crosslinked rubbers such as natural rubber, isoprene rubber, butadiene rubber, styrene-butadiene rubber, nitrile rubber, chloroprene rubber, butyl rubber, acrylic rubber, ethylene-propylene rubber, hydrin rubber, urethane rubber, silicone rubber, fluorine rubber, and styrene rubber , Polyolefin-based, polyvinyl chloride-based, polyurethane-based, polyester-based, polyamide-based, polybutadiene-based, trans-polyisoprene-based, fluororubber-based, chlorinated polyethylene-based thermoplastic elastomers, or styrene-, urethane-based, etc. Foam materials can be mentioned.
Among these, a polymer compound having a tensile modulus of 2.5 MPa or less can be suitably used.
前述したとおり、本発明の立体加工方法においては、用いる積層フィルムを構成する樹脂フィルムの平面方向における最も広い弾性変形領域よりも広い弾性変形領域を発現可能な弾性材料から成形加工部を形成することが重要である。成形加工部は、その全体をこのような弾性材料から形成してもよいし、或いは成形加工部のフィルムと当接する加工面付近を弾性材料から形成してもよく、弾性材料から形成される成形加工部の厚みによっても、成形加工部の弾性変形領域の広さを制御することができる。
成形加工部を形成可能な弾性材料としては、後述する積層フィルムを用いる場合には、これに限定されないが、以下の弾性材料を使用することができる。
例えば、天然ゴム、イソプレンゴム、ブタジエンゴム、スチレン－ブタジエンゴム、ニトリルゴム、クロロプレンゴム、ブチルゴム、アクリルゴム、エチレン－プロピレンゴム、ヒドリンゴム、ウレタンゴム、シリコーンゴム、フッ素ゴム等の各種架橋ゴム、スチレン系、ポリオレフィン系、ポリ塩化ビニル系、ポリウレタン系、ポリエステル系、ポリアミド系、ポリブタジエン系、トランスポリイソプレン系、フッ素ゴム系、塩素化ポリエチレン系等の各種熱可塑性エラストマー、或いはスチレン系、ウレタン系等の各種発泡材料を挙げることができる。
これらの中でも、引張弾性率が２．５ＭＰａ以下の高分子化合物等を好適に用いることができる。 (Forming part)
As described above, in the three-dimensional processing method of the present invention, in the three-dimensional processing method, the molded portion is formed from an elastic material capable of expressing an elastic deformation region wider than the widest elastic deformation region in the planar direction of the resin film constituting the laminated film to be used. is important. The forming part may be formed entirely of such an elastic material, or may be formed of an elastic material in the vicinity of a processing surface that comes into contact with the film of the forming part. The width of the elastically deformable region of the forming part can also be controlled by the thickness of the forming part.
When a laminated film described later is used, the elastic material that can form the molded portion is not limited to this, but the following elastic materials can be used.
For example, various crosslinked rubbers such as natural rubber, isoprene rubber, butadiene rubber, styrene-butadiene rubber, nitrile rubber, chloroprene rubber, butyl rubber, acrylic rubber, ethylene-propylene rubber, hydrin rubber, urethane rubber, silicone rubber, fluorine rubber, and styrene rubber , Polyolefin-based, polyvinyl chloride-based, polyurethane-based, polyester-based, polyamide-based, polybutadiene-based, trans-polyisoprene-based, fluororubber-based, chlorinated polyethylene-based thermoplastic elastomers, or styrene-, urethane-based, etc. Foam materials can be mentioned.
Among these, a polymer compound having a tensile modulus of 2.5 MPa or less can be suitably used.
（積層フィルム）
本発明の立体加工方法においては、用いる積層フィルムとして、張出方向に位置する外面フィルムとして伸びの小さいフィルム、内面フィルムに伸びの大きいフィルムを少なくとも有する積層フィルムを用いる。これにより積層フィルムの厚み方向に圧縮すると、伸びの大きい内面フィルムは弾性変形により圧縮された面から押し出されるように引張方向に大きく伸び、伸びの小さい外面フィルムは内面フィルムの伸びに応じて塑性変形により伸びる。圧縮力が解放されると内面フィルムは大きく復元する一方、外面フィルムの復元が小さいことから、内外面フィルムの間に復元量の差が生じて外面フィルム側に張り出した張出部が形成される。
内面フィルムとして用いる伸びの大きいフィルムとしては、ポリエチレン、ポリプロピレン等のポリオレフィンから成るヒートシール性を有するフィルムを用いることが好ましく、一方外面フィルムとして用いる伸びの小さいフィルムとしては、ナイロン、ポリエチレンテレフタレート（以下、「ＰＥＴ」ということがある）等の延伸フィルムを用いることが望ましい。積層フィルムを構成する上記フィルムの中では、内面フィルムを構成する伸びの大きいフィルムが最も広い弾性変形領域を有し、成形加工部を構成する材料の弾性変形領域の基準になる。 (Laminated film)
In the three-dimensional processing method of the present invention, as a laminated film to be used, a laminated film having at least a film with a small elongation as an outer film positioned in the overhanging direction and a film with a large elongation as an inner film is used. As a result, when the laminated film is compressed in the thickness direction, the inner film with large elongation stretches greatly in the tensile direction so as to be extruded from the surface compressed by elastic deformation, and the outer film with small elongation plastically deforms according to the elongation of the inner film. Stretch by. When the compression force is released, the inner film is largely restored, while the restoration of the outer film is small, so a difference in the amount of restoration is generated between the inner and outer films, and an overhanging portion protruding toward the outer film is formed. .
As the film with large elongation used as the inner surface film, it is preferable to use a film having heat sealability made of polyolefin such as polyethylene and polypropylene, and on the other hand, as the film with small elongation used as the outer surface film, nylon, polyethylene terephthalate (hereinafter, referred to as the following). It is desirable to use a stretched film such as “PET”. Among the films constituting the laminated film, the film having a large elongation constituting the inner film has the widest elastic deformation region and serves as a reference for the elastic deformation region of the material constituting the molded portion.
本発明の立体加工方法においては、用いる積層フィルムとして、張出方向に位置する外面フィルムとして伸びの小さいフィルム、内面フィルムに伸びの大きいフィルムを少なくとも有する積層フィルムを用いる。これにより積層フィルムの厚み方向に圧縮すると、伸びの大きい内面フィルムは弾性変形により圧縮された面から押し出されるように引張方向に大きく伸び、伸びの小さい外面フィルムは内面フィルムの伸びに応じて塑性変形により伸びる。圧縮力が解放されると内面フィルムは大きく復元する一方、外面フィルムの復元が小さいことから、内外面フィルムの間に復元量の差が生じて外面フィルム側に張り出した張出部が形成される。
内面フィルムとして用いる伸びの大きいフィルムとしては、ポリエチレン、ポリプロピレン等のポリオレフィンから成るヒートシール性を有するフィルムを用いることが好ましく、一方外面フィルムとして用いる伸びの小さいフィルムとしては、ナイロン、ポリエチレンテレフタレート（以下、「ＰＥＴ」ということがある）等の延伸フィルムを用いることが望ましい。積層フィルムを構成する上記フィルムの中では、内面フィルムを構成する伸びの大きいフィルムが最も広い弾性変形領域を有し、成形加工部を構成する材料の弾性変形領域の基準になる。 (Laminated film)
In the three-dimensional processing method of the present invention, as a laminated film to be used, a laminated film having at least a film with a small elongation as an outer film positioned in the overhanging direction and a film with a large elongation as an inner film is used. As a result, when the laminated film is compressed in the thickness direction, the inner film with large elongation stretches greatly in the tensile direction so as to be extruded from the surface compressed by elastic deformation, and the outer film with small elongation plastically deforms according to the elongation of the inner film. Stretch by. When the compression force is released, the inner film is largely restored, while the restoration of the outer film is small, so a difference in the amount of restoration is generated between the inner and outer films, and an overhanging portion protruding toward the outer film is formed. .
As the film with large elongation used as the inner surface film, it is preferable to use a film having heat sealability made of polyolefin such as polyethylene and polypropylene, and on the other hand, as the film with small elongation used as the outer surface film, nylon, polyethylene terephthalate (hereinafter, referred to as the following). It is desirable to use a stretched film such as “PET”. Among the films constituting the laminated film, the film having a large elongation constituting the inner film has the widest elastic deformation region and serves as a reference for the elastic deformation region of the material constituting the molded portion.
本発明の立体加工方法においては、積層フィルムの内面フィルムと外面フィルムの間に、他の樹脂フィルムを備えていてもよい。特に、アルミ蒸着フィルム等の金属蒸着フィルムを含有することにより、地色として金属光沢を有するだけでなく、前述した立体加工により、光の干渉が生じて、ホログラム調の外観を張出部に形成することが可能になる。
すなわち、図３に示す積層フィルム２０は、外面フィルム２１と内面フィルム２２の間に、金属蒸着層２３ａが基材フィルム２３ｂに形成された金属蒸着フィルム２３が、金属蒸着層２３ａが内面フィルム側となるように配置されている。図３（Ａ）の金属蒸着層部分を拡大して示す模式図から明らかなように、金属蒸着層２３ａは、金属（アルミニウム）２３ａがランダムに基材フィルム２３ｂ上に積層された上、オーバーコート剤２３ｃで固定化されている。この積層フィルム２０が本発明の立体加工方法に付されると、図３（Ｂ）に示すように、金属蒸着層２３ａが適度に崩れて、その表面に凹凸が形成されることに起因して光の乱反射が増加し、光の干渉が生じてホログラム調の外観が得られるようになる。
尚、金属蒸着層に起因するホログラム調外観を張出部に形成するためには、金属蒸着層が引張応力を受け十分伸ばされることが必要であることから、金属蒸着層が内面フィルムのような伸びの大きい材料に隣接していることが望ましい。 In the three-dimensional processing method of the present invention, another resin film may be provided between the inner film and the outer film of the laminated film. In particular, by containing a metal-deposited film such as an aluminum-deposited film, it not only has a metallic luster as a ground color, but also causes light interference due to the three-dimensional processing described above, forming a hologram-like appearance in the overhang portion. Will be able to
That is, thelaminated film 20 shown in FIG. 3 is such that the metal-deposited film 23 in which the metal-deposited layer 23a is formed on the base film 23b is disposed between the outer-side film 21 and the inner-side film 22, It is arranged to become. As is apparent from the enlarged schematic view of the metal deposition layer portion of FIG. 3A, the metal deposition layer 23a is formed by randomly depositing a metal (aluminum) 23a on a base film 23b and overcoating the base film 23b. It is immobilized with the agent 23c. When this laminated film 20 is subjected to the three-dimensional processing method of the present invention, as shown in FIG. 3 (B), the metal deposition layer 23a is appropriately collapsed, resulting in the formation of irregularities on the surface. Irregular reflection of light increases, and interference of light occurs, so that a hologram-like appearance can be obtained.
In order to form the hologram-like appearance due to the metal deposition layer on the overhang portion, it is necessary that the metal deposition layer be sufficiently stretched by receiving the tensile stress. Desirably, it is adjacent to high elongation material.
すなわち、図３に示す積層フィルム２０は、外面フィルム２１と内面フィルム２２の間に、金属蒸着層２３ａが基材フィルム２３ｂに形成された金属蒸着フィルム２３が、金属蒸着層２３ａが内面フィルム側となるように配置されている。図３（Ａ）の金属蒸着層部分を拡大して示す模式図から明らかなように、金属蒸着層２３ａは、金属（アルミニウム）２３ａがランダムに基材フィルム２３ｂ上に積層された上、オーバーコート剤２３ｃで固定化されている。この積層フィルム２０が本発明の立体加工方法に付されると、図３（Ｂ）に示すように、金属蒸着層２３ａが適度に崩れて、その表面に凹凸が形成されることに起因して光の乱反射が増加し、光の干渉が生じてホログラム調の外観が得られるようになる。
尚、金属蒸着層に起因するホログラム調外観を張出部に形成するためには、金属蒸着層が引張応力を受け十分伸ばされることが必要であることから、金属蒸着層が内面フィルムのような伸びの大きい材料に隣接していることが望ましい。 In the three-dimensional processing method of the present invention, another resin film may be provided between the inner film and the outer film of the laminated film. In particular, by containing a metal-deposited film such as an aluminum-deposited film, it not only has a metallic luster as a ground color, but also causes light interference due to the three-dimensional processing described above, forming a hologram-like appearance in the overhang portion. Will be able to
That is, the
In order to form the hologram-like appearance due to the metal deposition layer on the overhang portion, it is necessary that the metal deposition layer be sufficiently stretched by receiving the tensile stress. Desirably, it is adjacent to high elongation material.
また積層フィルムには、上述した金属蒸着層のみならず、外面側フィルムの外側にはトップコート層等、本発明の効果を損なわない範囲でさらに他の層が形成されていてもよい。
積層フィルムとしては、これに限定されないが、内面／外面の順で、ポリエチレンフィルム／延伸ナイロンフィルム、ポリエチレンフィルム／延伸ナイロンフィルム／延伸ＰＥＴフィルム、ポリエチレンフィルム／延伸ＰＥＴフィルム／延伸ナイロンフィルム、ポリエチレンフィルム／アルミ蒸着延伸ナイロンフィルム／延伸ＰＥＴフィルム、ポリエチレンフィルム／アルミ蒸着延伸ＰＥＴフィルム／延伸ナイロンフィルム、ポリプロピレンフィルム／延伸ナイロンフィルム、ポリプロピレンフィルム／延伸ナイロンフィルム／延伸ＰＥＴフィルム、ポリプロピレンフィルム／延伸ＰＥＴフィルム／延伸ナイロンフィルム、ポリプロピレンフィルム／アルミ蒸着延伸ナイロンフィルム／延伸ＰＥＴフィルム、ポリプロピレンフィルム／アルミ蒸着延伸ＰＥＴフィルム／延伸ナイロンフィルム等を例示できる。 In addition to the metal-deposited layer described above, other layers such as a top coat layer may be formed on the outer side of the outer film on the laminated film as long as the effects of the present invention are not impaired.
Examples of the laminated film include, but are not limited to, polyethylene film / stretched nylon film, polyethylene film / stretched nylon film / stretched PET film, polyethylene film / stretched PET film / stretched nylon film, polyethylene film / Aluminum evaporated stretched nylon film / stretched PET film, polyethylene film / aluminum evaporated stretched PET film / stretched nylon film, polypropylene film / stretched nylon film, polypropylene film / stretched nylon film / stretched PET film, polypropylene film / stretched PET film / stretched nylon Film, polypropylene film / aluminum-evaporated stretched nylon film / stretched PET film, polypropylene film / aluminum It can be exemplified Chakuenshin PET film / oriented nylon film or the like.
積層フィルムとしては、これに限定されないが、内面／外面の順で、ポリエチレンフィルム／延伸ナイロンフィルム、ポリエチレンフィルム／延伸ナイロンフィルム／延伸ＰＥＴフィルム、ポリエチレンフィルム／延伸ＰＥＴフィルム／延伸ナイロンフィルム、ポリエチレンフィルム／アルミ蒸着延伸ナイロンフィルム／延伸ＰＥＴフィルム、ポリエチレンフィルム／アルミ蒸着延伸ＰＥＴフィルム／延伸ナイロンフィルム、ポリプロピレンフィルム／延伸ナイロンフィルム、ポリプロピレンフィルム／延伸ナイロンフィルム／延伸ＰＥＴフィルム、ポリプロピレンフィルム／延伸ＰＥＴフィルム／延伸ナイロンフィルム、ポリプロピレンフィルム／アルミ蒸着延伸ナイロンフィルム／延伸ＰＥＴフィルム、ポリプロピレンフィルム／アルミ蒸着延伸ＰＥＴフィルム／延伸ナイロンフィルム等を例示できる。 In addition to the metal-deposited layer described above, other layers such as a top coat layer may be formed on the outer side of the outer film on the laminated film as long as the effects of the present invention are not impaired.
Examples of the laminated film include, but are not limited to, polyethylene film / stretched nylon film, polyethylene film / stretched nylon film / stretched PET film, polyethylene film / stretched PET film / stretched nylon film, polyethylene film / Aluminum evaporated stretched nylon film / stretched PET film, polyethylene film / aluminum evaporated stretched PET film / stretched nylon film, polypropylene film / stretched nylon film, polypropylene film / stretched nylon film / stretched PET film, polypropylene film / stretched PET film / stretched nylon Film, polypropylene film / aluminum-evaporated stretched nylon film / stretched PET film, polypropylene film / aluminum It can be exemplified Chakuenshin PET film / oriented nylon film or the like.
積層フィルムの立体加工前における内面側フィルム及び外面側フィルムの厚みは、張出部の成形加工性や張出部における伸ばし量が大きいという観点から、これに限定されないが、内面フィルムが５０～１５０μｍの範囲にあり、外面フィルムが１２～２５μｍの範囲にあり、内面フィルムが外面フィルムの３～２０倍程度の厚みを有することが特に好適である。
更に、積層フィルムに他の層を設ける場合には、積層フィルムの総厚みが６０～２５０μｍの範囲にあることが望ましい。 The thickness of the inner surface film and the outer surface film before the three-dimensional processing of the laminated film is not limited to this, from the viewpoint that the formability of the overhang portion and the stretch amount at the overhang portion are large, but the thickness of the inner film is 50 to 150 μm. It is particularly preferable that the outer film has a thickness of 12 to 25 μm and the inner film has a thickness of about 3 to 20 times the outer film.
Further, when another layer is provided on the laminated film, the total thickness of the laminated film is preferably in the range of 60 to 250 μm.
更に、積層フィルムに他の層を設ける場合には、積層フィルムの総厚みが６０～２５０μｍの範囲にあることが望ましい。 The thickness of the inner surface film and the outer surface film before the three-dimensional processing of the laminated film is not limited to this, from the viewpoint that the formability of the overhang portion and the stretch amount at the overhang portion are large, but the thickness of the inner film is 50 to 150 μm. It is particularly preferable that the outer film has a thickness of 12 to 25 μm and the inner film has a thickness of about 3 to 20 times the outer film.
Further, when another layer is provided on the laminated film, the total thickness of the laminated film is preferably in the range of 60 to 250 μm.
１ 積層フィルム、２ 成形加工部、３ パンチ、４ アンビル（受け台）、５ 張出部、１０ 成形加工部、１１ 成形ロール、１２ アンビルロール、２０ 積層フィルム、２１ 外面フィルム、２２ 内面フィルム、２３ 金属蒸着フィルム。
1 laminated film, 2 molded part, 3 punch, 4 anvil (cradle), 5 overhang part, 10 molded part, 11 molded roll, 12 anvil roll, 20 laminated film, 21 outer film, 22 inner film, 23 Metallized film.
Claims (9)
- 最内面の伸びの大きい内面フィルムと外面側の伸びの小さい外面フィルムとを少なくとも有する積層フィルムを、該積層フィルムの厚み方向に成形加工部により圧縮成形することにより、該圧縮成形部を外面側に張出させる立体加工方法において、
前記成形加工部が、積層フィルムを構成するフィルムの平面方向における最も広い弾性変形領域よりも広い弾性変形領域を実現可能な材料から成ることを特徴とする立体加工方法。 By laminating a laminated film having at least an inner film with a larger innermost surface and an outer film with a small elongation on the outer surface by compression molding in the thickness direction of the laminated film, the compression molded portion is formed on the outer surface side. In the three-dimensional processing method to overhang,
The three-dimensional processing method, wherein the forming part is made of a material capable of realizing an elastic deformation region wider than a widest elastic deformation region in a plane direction of a film constituting the laminated film. - 前記成形加工部が、相対する成形ロール及びアンビルロールを備えた回転加工装置の成形ロールに設置されている請求項１記載の立体加工方法。 3. The three-dimensional processing method according to claim 1, wherein the forming section is provided on a forming roll of a rotary processing apparatus having an opposing forming roll and an anvil roll.
- 前記成形加工部の加工幅が、６ｍｍ以上である請求項１又は２記載の立体加工方法。 立体 The three-dimensional processing method according to claim 1 or 2, wherein a processing width of the forming part is 6 mm or more.
- 前記積層フィルムが、内面フィルムと外面フィルムの間に蒸着層を有する請求項１～３の何れかに記載の立体加工方法。 立体 The three-dimensional processing method according to any one of claims 1 to 3, wherein the laminated film has a vapor deposition layer between an inner film and an outer film.
- 前記伸びの小さい外面フィルムが、ナイロン又はポリエステルから成る延伸フィルムであり、前記伸びの大きい内面フィルムが、ポリオレフィンから成るフィルムである請求項１～４記載の何れかに記載の立体加工方法。 (5) The three-dimensional processing method according to any one of (1) to (4), wherein the outer film having a small elongation is a stretched film made of nylon or polyester, and the inner film having a large elongation is a film made of polyolefin.
- 前記成形加工部が、引張弾性率が２．５ＧＰａ以下の高分子化合物から成る請求項５記載の立体加工方法。 6. The three-dimensional processing method according to claim 5, wherein the molded part is made of a polymer compound having a tensile modulus of 2.5 GPa or less.
- 前記圧縮成形における圧縮量が、積層フィルムの厚みに対して３０％以上５０％以下である請求項１～６の何れかに記載の立体加工方法。 (7) The three-dimensional processing method according to any one of (1) to (6), wherein the amount of compression in the compression molding is 30% or more and 50% or less with respect to the thickness of the laminated film.
- 相対する成形ロール及びアンビルロールと、この成形ロールに設けられ、最内面の伸びの大きい内面フィルムと外面側の伸びの小さい外面フィルムとを少なくとも有する積層フィルムを圧縮成形する成形加工部とを備えた、積層フィルムの被圧縮成形部に立体加工を施す回転加工装置において、
前記成形加工部が、前記積層フィルムを構成するフィルムの平面方向における最も高い弾性変形領域よりも広い弾性変形領域を発現可能な材料から成ることを特徴とする回転加工装置。 Forming rolls and anvil rolls facing each other, and a forming section for compression-forming a laminated film provided at least on the forming rolls and having at least an inner film having a large innermost surface and an outer film having a small outer-side elongation. In a rotary processing device that performs three-dimensional processing on the compression-molded portion of the laminated film
The rotary processing apparatus, wherein the forming section is made of a material capable of exhibiting an elastic deformation region wider than a highest elastic deformation region in a plane direction of the film constituting the laminated film. - 前記成形加工部の加工幅が、６ｍｍ以上である請求項８記載の回転加工装置。 回 転 The rotary working apparatus according to claim 8, wherein a working width of the forming part is 6 mm or more.
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| JP2010076132A (en) * | 2008-09-24 | 2010-04-08 | Fujimori Kogyo Co Ltd | Laminated film working method |
| JP2014046655A (en) * | 2012-09-04 | 2014-03-17 | Toyo Seikan Kaisha Ltd | Three-dimensional molding method of laminated film, and apparatus therefor |
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| US5356364A (en) * | 1991-02-22 | 1994-10-18 | Kimberly-Clark Corporation | Method for embossing webs |
| AU2003252665A1 (en) * | 2002-07-18 | 2004-02-09 | Yupo Corporation | Glossy film |
| EP2326500B1 (en) * | 2008-08-07 | 2016-11-02 | SCA Hygiene Products GmbH | Apparatus and method for ply bonding as well as multi-ply product |
| TWI628120B (en) * | 2012-10-15 | 2018-07-01 | 凸版印刷股份有限公司 | Laminated film and packaging container |
| JP6295694B2 (en) * | 2014-02-07 | 2018-03-20 | 東洋製罐株式会社 | Easy-open pouch manufacturing method and easy-open pouch |
| JP6144732B2 (en) * | 2015-08-06 | 2017-06-07 | 東洋製罐株式会社 | Decorative laminated film, bag-like container having this decorative laminated film, and sealing material |
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| JPH01111096A (en) * | 1987-07-20 | 1989-04-27 | Daio Paper Corp | Emboss imparted papers, and method and apparatus for producing the same |
| JP2010076132A (en) * | 2008-09-24 | 2010-04-08 | Fujimori Kogyo Co Ltd | Laminated film working method |
| JP2014046655A (en) * | 2012-09-04 | 2014-03-17 | Toyo Seikan Kaisha Ltd | Three-dimensional molding method of laminated film, and apparatus therefor |
| JP2016132212A (en) * | 2015-01-21 | 2016-07-25 | 藤森工業株式会社 | Bag-making method, bag making machine and packaging bag |
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