CN112384361B - Three-dimensional processing method of film - Google Patents
Three-dimensional processing method of film Download PDFInfo
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- CN112384361B CN112384361B CN201980046220.9A CN201980046220A CN112384361B CN 112384361 B CN112384361 B CN 112384361B CN 201980046220 A CN201980046220 A CN 201980046220A CN 112384361 B CN112384361 B CN 112384361B
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- film
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- dimensional
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- 238000003672 processing method Methods 0.000 title claims abstract description 23
- 238000007906 compression Methods 0.000 claims abstract description 14
- 230000006835 compression Effects 0.000 claims abstract description 13
- 238000005482 strain hardening Methods 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims description 18
- 239000004677 Nylon Substances 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 229920000098 polyolefin Polymers 0.000 claims description 3
- 229920000728 polyester Polymers 0.000 claims description 2
- 238000000465 moulding Methods 0.000 abstract description 8
- 238000000748 compression moulding Methods 0.000 abstract description 6
- 238000005034 decoration Methods 0.000 abstract description 2
- 229920005989 resin Polymers 0.000 description 32
- 239000011347 resin Substances 0.000 description 32
- -1 polyethylene Polymers 0.000 description 12
- 229920006284 nylon film Polymers 0.000 description 9
- 229920002799 BoPET Polymers 0.000 description 8
- 239000005001 laminate film Substances 0.000 description 7
- 239000004698 Polyethylene Substances 0.000 description 6
- 229920000573 polyethylene Polymers 0.000 description 6
- 239000004743 Polypropylene Substances 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 5
- 229920001155 polypropylene Polymers 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 239000002356 single layer Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 235000013361 beverage Nutrition 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000005021 flexible packaging material Substances 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 239000005028 tinplate Substances 0.000 description 1
Images
Classifications
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Making Paper Articles (AREA)
- Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
- Laminated Bodies (AREA)
Abstract
The present invention provides a three-dimensional processing method, wherein a film is subjected to compression molding in a cold working mode by a molding processing part so as to form a concave part on the film, the processing width of the molding processing part is more than or equal to 0.2mm and less than 2mm, the compression amount of the molding processing part is less than or equal to 30% of the thickness of the film, and a three-dimensional pattern with excellent decoration performance can be formed.
Description
Technical Field
The present invention relates to a method for three-dimensionally processing a film, and more particularly, to a method for three-dimensionally processing a film capable of forming a concave portion in the film by cold working.
Background
In a baglike container such as a pouch filled with semi-fluid or fluid contents such as food, beverage, detergent, etc., or a seal used as a lid of a cup-like or tray-like container, it is required to arrange various patterns together with characters such as a product name, etc., to differentiate products from those of other companies and to improve commercial value. In order to meet such a demand, a process of making characters and patterns conspicuous such as making printing three-dimensional is performed.
For example, patent document 1 proposes a method of forming a pouch-shaped container with an embossed pattern, which comprises: a pouch-shaped container is formed using a flexible packaging material, and an embossed pattern is formed by locally heating and cooling a predetermined portion of the pouch-shaped container. However, the method of patent document 1 requires time for heating and cooling, and thus has a problem of poor productivity.
Further, the present inventors have proposed a method for three-dimensional formation of a laminated film, comprising: a laminated synthetic resin film obtained by laminating at least a soft inner surface film and an outer surface film having a high strength on the outer surface side is subjected to cold working to be compression-molded in the thickness direction, and the compression-molded portion is protruded to the outer surface side (patent document 2). In this three-dimensional forming method, although the convex portion protruding to the outside of the laminate film can be formed by cold working, the three-dimensional forming method cannot form the concave portion, and cannot form a combination of the convex portion and the concave portion having excellent decorativeness.
Further, in patent document 3 described below, the present inventors have proposed a method of processing an embossed pattern of a laminated film including an inner surface film having a large elongation and an outer surface film having a small elongation, wherein one laminated film of the laminated films is subjected to a compression process in a thickness direction by cold working, an embossed pattern is formed on the laminated film in a compression processing region by a three-dimensional decoration of convex portions protruding outward and concave portions adjacent to the convex portions, one of the convex portions and the concave portions is set to a dot shape, and the embossed pattern is formed on the one laminated film without forming unevenness due to the embossed pattern on the other laminated film.
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open publication No. 2004-142132
Patent document 2: japanese laid-open patent publication No. 2014-46655
Patent document 3: japanese patent laid-open publication No. 2016-37044
Disclosure of Invention
Problems to be solved by the invention
However, in patent document 3, by combining the convex portions and the convex portions, the convex portions adjacent to each other are formed as concave portions with respect to the convex portion tips, and the pattern is limited to the pattern formed by dots.
Accordingly, an object of the present invention is to provide a three-dimensional processing method capable of forming a three-dimensional pattern excellent in decorativeness and forming a concave portion by compression-forming a film by cold working.
Another object of the present invention is to provide a three-dimensional processing method capable of forming a complicated three-dimensional pattern such as a folded pattern by a combination of a concave portion and a convex portion.
Means for solving the problems
According to the present invention, there is provided a three-dimensional processing method in which a concave portion is formed in a film by performing compression molding on the film by cold working using a molding part having a working width in a range of 0.2mm or more and less than 2mm and a compression amount by the molding part being 30% or less of a thickness of the film.
In the three-dimensional processing method of the present invention, preferably,
1. the forming part is mirror-finished;
2. the film is a laminated film having an outer surface film with a small elongation and an inner surface film with a large elongation;
3. the less elongated outer surface film is a stretched film comprising nylon or polyester and the more elongated inner surface film is a film comprising polyolefin;
4. in the same step or a different step as the step of forming the recessed portion, a forming section having a width of 2mm or more is used, and the compression is performed by a compression amount of 30% or less of the thickness of the laminated film, thereby forming a protruding portion protruding toward the outer surface film side of the laminated film.
ADVANTAGEOUS EFFECTS OF INVENTION
The three-dimensional processing method of the present invention can form a concave portion by cold working of compression molding without heating the resin film, and the concave portion can be formed into a shape such as a shape obtained by folding processing.
Further, by using a laminated film having an outer film with a small elongation and an inner film with a large elongation, and adjusting the width of the processing portion of the forming processing portion, it is possible to form the convex portion in the same compression molding, and it is also possible to form a complicated three-dimensional pattern as represented by a paper folding process by a combination of the concave portion and the convex portion.
Drawings
Fig. 1 is a view for explaining formation of a concave portion by the three-dimensional processing method of the present invention.
Fig. 2 is a view for explaining a mode of forming a concave portion and a convex portion in combination by the three-dimensional processing method of the present invention.
Detailed Description
(method of processing a recess three-dimensionally)
An important feature of the three-dimensional processing method of the present invention is that a concave portion having a shape like a folded shape can be formed by cold working by performing compression molding with a compression amount of 30% or less of the thickness of a resin film to be used using a molding part having a processing width L in a range of 0.2mm or more and less than 2mm, particularly 0.5mm or more and less than 2mm, and then releasing the pressure. The processing width of the formed portion is the minimum distance of contact with the processed surface of the resin film, and the length (depth direction in fig. 1) of the formed portion can be appropriately changed according to the shape of the recess to be formed.
When the processing width of the forming portion is smaller than the above range, the resin film may be cracked or broken. On the other hand, when the processing width is larger than the above range, the resin film is restored to the former shape or a convex portion is formed without plastic deformation, and a concave portion cannot be formed. In addition, when the compression amount is larger than the above range, the resin film may be cracked or broken.
When only the concave portion is formed by the three-dimensional processing method of the present invention, the resin film to be used is not limited to the laminate film described later, and may be a single-layer film.
Fig. 1 is a diagram for explaining formation of a concave portion by the three-dimensional processing method of the present invention, and the concave portion can be formed by using a plane press processing device which compresses in a plane as shown in fig. 1 (a) and a rotary processing device which compresses while rotating a pair of rollers, i.e., a forming roller and an anvil roller, as shown in fig. 1 (B).
That is, in the flat press working apparatus shown in fig. 1 (a), the resin film 1 is provided between the punch 11 and the anvil 12, and the resin film 1 is compression-molded in the thickness direction by the punch 11, so that the concave portion can be formed in the resin film 1, wherein the punch 11 has the working portion 10, and the working portion 10 has the working width L in the above range. The adjustment of the compression amount of the resin film 1 is performed by adjusting the distance between the processing section 10 and the anvil 12 at the stroke end of the flat press processing apparatus.
In the rotary processing apparatus shown in fig. 1 (B), the gap H between the processing portion 20 and the anvil roll 22 is adjusted so that the compression molding ratio of the resin film 1 in the thickness direction is 30% or less of the thickness of the resin film by using the forming roll 21 and the anvil roll 22, the forming roll 21 having the processing portion 20 formed on the surface thereof, and the processing portion 20 having the processing width L in the above range. In the rotary processing apparatus, a factor of a biting angle of the processing portion with respect to the film increases, and thus a deformation region becomes larger as compared with a planar press processing apparatus. Therefore, by adjusting the processing width of the processing portion within the above range, a plurality of concave portions can be mixed in shape.
In the three-dimensional processing method of the present invention, in order to efficiently form the concave portion, it is preferable to reduce the frictional force between the processed portion 10 and the resin film. That is, if the frictional force between the processed portion and the resin film increases, the resin film is restrained by the processed portion, and the shear force applied to the resin film increases, and the compressive force (force in the film thickness direction) applied to the resin film decreases, and there is a possibility that the recessed portion cannot be formed efficiently. Therefore, in order to efficiently form the concave portion, it is desirable to perform mirror finishing on the surface of the processed portion so as to reduce the amount of friction as much as possible.
(method of processing a combination of concave and convex parts in three dimensions)
In the three-dimensional processing method of the present invention, only the concave portions can be formed in the resin film, but by using a laminate film having at least an inner surface resin film having a large elongation and an outer surface resin film having a small elongation, concave portions recessed toward the inner surface resin film side and convex portions protruding toward the outer surface resin film side can be formed in combination.
By combining the linear concave and convex portions, the valley fold of the concave portion and the mountain fold of the convex portion, various patterns proposed in the paper folding process can be formed. For example, when valley folds and mountain folds are alternately combined, a corrugated three-dimensional process can be performed, and when valley folds and mountain folds are combined in this order, a three-dimensional process such as a corrugated tinplate (japanese: 124887912531board) can be performed, thereby forming various patterns.
As described above, in the three-dimensional processing method of the present invention, as shown in fig. 1 (a), the convex portion can be formed simultaneously with the concave portion by the flat surface press processing device, or the concave portion and the convex portion can be formed in different steps, but it is preferable to form the convex portion by the rotary processing device which has a large deformation region and can form a plurality of concave portions in a mixed shape in forming the concave portion as described above.
Fig. 2 is a view for explaining a three-dimensional processing method for simultaneously forming a concave portion and a convex portion by using a rotary processing apparatus. The forming roll 21 is provided with a processing portion 20A for forming concave portions and a processing portion 20B for forming convex portions, and the laminate film 2 is arranged such that the outer surface resin film 2a having a small elongation is on the forming roll 21 side and the inner surface resin film 2B having a large elongation is on the anvil roll 22 side.
In the present invention, the formation of the convex portion formed by combining with the concave portion itself can be formed by the three-dimensional processing method described in patent document 2 by the inventors of the present invention described above. That is, the processing section 20B used for forming the convex portions has a processing width L of 2mm or more, and the gap between the processing section 20B and the anvil roll 22 is adjusted so that the compression amount is 30% or less of the thickness of the laminate film. The upper limit of the processing width of the processing portion used for forming the convex portion can be appropriately set within a range in which film breakage does not occur.
As described above, since the frictional force between the processed portion and the resin film affects the restriction of the processed portion on the resin film, the protruding amount can be increased by increasing the frictional force for the formation of the convex portion. Therefore, it is preferable that the processed portion 20A for forming the concave portion is mirror-finished, and the processed portion 20B for forming the convex portion is rough-finished.
In the method of three-dimensional processing using the convex portion of the laminated film, not only one laminated film but also the laminated film stacked on the other can be directly applied in a stacked state, and therefore, the convex portion can be formed on both sides of the stacked laminated film, and the concave portion can be formed only on one side, or the concave portion and the convex portion can be formed only on one side.
(resin film)
In the three-dimensional processing method of the present invention, when only the concave portion is formed, a single-layer film may be used, and in this case, all resin films used as an inner surface film or an outer surface film described later can be used.
In the case of forming a combination of a concave portion and a convex portion, it is preferable to use a laminated film using a film having a large elongation as an inner surface film and having at least a film having a small elongation as an outer surface film, from the viewpoint of the aforementioned three-dimensional processing of convex portions.
The film having a large elongation used as the inner surface film is preferably a film having heat sealability containing polyolefin such as polyethylene or polypropylene, while the film having a small elongation used as the outer surface film is preferably a stretched film such as nylon or polyethylene terephthalate (hereinafter, sometimes referred to as "PET").
The laminate film may have another resin film between the inner surface film and the outer surface film, and may have a metallic luster as a base color by containing a metal vapor-deposited film such as an aluminum vapor-deposited film. Further, a finish coat layer or the like may be formed on the outer side of the outer surface film, and another layer may be further formed within a range not impairing the effect of the present invention.
The laminate film is not limited to this, and examples thereof include a polyethylene film/a stretched nylon film, a polyethylene film/a stretched nylon film/a stretched PET film, a polyethylene film/a stretched PET film/a stretched nylon film, a polyethylene film/an aluminum vapor-deposited stretched nylon film/a stretched PET film, a polyethylene film/an aluminum vapor-deposited stretched PET film/a stretched nylon film, a polypropylene film/a stretched nylon film/a stretched PET film, a polypropylene film/a stretched PET film/a stretched nylon film, a polypropylene film/an aluminum vapor-deposited stretched nylon film/a stretched PET film, a polypropylene film/an aluminum vapor-deposited stretched PET film/a stretched nylon film, and the like in the order of the inner surface/the outer surface.
In the case of a single-layer film subjected to the stereolithography of only the recessed portions, the thickness of the film before the stereolithography of the recessed portions is preferably in the range of 0.2 to 3 μm from the viewpoint of the formability of the recessed portions, but is not limited thereto.
In the case of using the laminated film, the thickness of the inner surface film and the outer surface film before the molding of the concave and convex portions is particularly preferably in the range of 50 to 200 μm, the thickness of the outer surface film is in the range of 10 to 30 μm, and the thickness of the inner surface film is about 3 to 20 times that of the outer surface film, from the viewpoint of the molding processability of the convex portions, but is not limited thereto.
Further, in the case where another layer is provided to the laminated film, the total thickness of the laminated film is desirably in the range of 70 to 300 μm.
As described above, in the three-dimensional processing method of the present invention, since two sheets of films can be stacked to form a combination of concave portions and convex portions on both sides or one side thereof, for example, a three-dimensional pattern obtained by a combination of valley folds and mountain folds can be directly formed on a pouch or the like in which inner surface side heat-sealable films of a laminated film are stacked.
In the three-dimensional processing method of the present invention, in addition to the pouch for packaging, not only the single (1 sheet) laminated film but also the laminated film to be stacked can be three-dimensionally molded with concave and convex portions such as letters, braille, patterns, and anti-slip members, and a highly decorative pattern such as three-fold can be easily formed in the resin film by a combination of valley fold and mountain fold in the paper folding process.
Description of the reference numerals
1. A resin film; 2. laminating the film; 10. a processing section; 11. a punch; 12. an anvil; 20. a processing section; 21. a forming roll; 22. an anvil roll.
Claims (2)
1. A three-dimensional processing method is characterized in that,
in the three-dimensional processing method, a forming processing part is used to perform compression forming on a film in a cold working mode so as to form a concave part on the film,
the processing width of the forming processing part is more than 0.2mm and less than 2mm, the compression amount compressed by the forming processing part is less than 30% of the thickness of the film,
the formed part is mirror-finished,
the film is a laminated film having an outer surface film with a small elongation and an inner surface film with a large elongation,
in the same step or a different step as the step of forming the recessed portion, a forming section having a width in a range of 2mm or more is used, and the compression is performed by a compression amount of 30% or less of the thickness of the laminated film, thereby forming a protruding portion protruding toward the outer surface film side of the laminated film.
2. The stereolithography method according to claim 1,
the less elongated outer surface film is a stretched film comprising nylon or polyester and the more elongated inner surface film is a film comprising polyolefin.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018130447A JP7305928B2 (en) | 2018-07-10 | 2018-07-10 | Three-dimensional processing method of film |
| JP2018-130447 | 2018-07-10 | ||
| PCT/JP2019/026451 WO2020013047A1 (en) | 2018-07-10 | 2019-07-03 | Three-dimensional processing method of film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112384361A CN112384361A (en) | 2021-02-19 |
| CN112384361B true CN112384361B (en) | 2023-03-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201980046220.9A Active CN112384361B (en) | 2018-07-10 | 2019-07-03 | Three-dimensional processing method of film |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP7305928B2 (en) |
| CN (1) | CN112384361B (en) |
| WO (1) | WO2020013047A1 (en) |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2164120A1 (en) * | 1993-06-28 | 1995-01-05 | Jose Porchia | Flexible thermoplastic containers having a visual pattern thereon |
| JPH078805U (en) * | 1993-06-29 | 1995-02-07 | 第二しなのポリマー株式会社 | Directional diffuser and its applications |
| JP3404602B2 (en) * | 1993-12-02 | 2003-05-12 | 大日本印刷株式会社 | Intermediate transfer recording medium and image formed matter |
| JPH07206012A (en) * | 1994-01-26 | 1995-08-08 | Dainippon Printing Co Ltd | Easily openable bag |
| ATE199517T1 (en) * | 1995-12-12 | 2001-03-15 | Alusuisse Tech & Man Ag | METHOD FOR PRODUCING BLISTER PACKAGES |
| JP2001219486A (en) * | 2000-02-10 | 2001-08-14 | Achilles Corp | Method for forming crease line in synthetic resin sheet and synthetic resin sheet having crease line formed therein by creaser |
| JP3965355B2 (en) * | 2002-11-27 | 2007-08-29 | 株式会社細川洋行 | Packaging bag and manufacturing method thereof |
| JP2004261836A (en) * | 2003-02-28 | 2004-09-24 | Yasuyuki Ozaki | Press die and press method for working ultra-fine precise cross section, component applying the same and various kinds of parts, equipment and devices using the same |
| CN1792628A (en) * | 2005-11-08 | 2006-06-28 | 金红叶纸业（苏州工业园区）有限公司 | Embossed multilayer paper |
| JP2010538925A (en) * | 2007-09-14 | 2010-12-16 | ミスティック ファーマシューティカルズ， インコーポレイテッド | Deep drawing container molding method |
| KR20110102897A (en) * | 2008-12-23 | 2011-09-19 | 스미또모 가가꾸 가부시키가이샤 | Optical film and liquid crystal display device comprising same |
| EP2501768A4 (en) * | 2009-11-16 | 2013-05-15 | Glad Products Co | Discontinuously laminated film |
| JP5277289B2 (en) * | 2011-06-28 | 2013-08-28 | 株式会社カナエ | Embossed film manufacturing method and embossed film manufacturing apparatus |
| JP6051696B2 (en) * | 2012-09-04 | 2016-12-27 | 東洋製罐株式会社 | Three-dimensional forming method of laminated film |
| JP6446858B2 (en) * | 2014-06-24 | 2019-01-09 | 東洋製罐株式会社 | Processing apparatus having a pair of rotating rolls |
| JP6520042B2 (en) * | 2014-10-23 | 2019-05-29 | 東洋製罐株式会社 | Three-dimensional molding method of laminated film body |
-
2018
- 2018-07-10 JP JP2018130447A patent/JP7305928B2/en active Active
-
2019
- 2019-07-03 CN CN201980046220.9A patent/CN112384361B/en active Active
- 2019-07-03 WO PCT/JP2019/026451 patent/WO2020013047A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| CN112384361A (en) | 2021-02-19 |
| WO2020013047A1 (en) | 2020-01-16 |
| JP7305928B2 (en) | 2023-07-11 |
| JP2020006596A (en) | 2020-01-16 |
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