JP2009029492A - Twisted package - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a twisted package of a candy, or the like which is hygienic, is able to contribute to solve the problem of global environment and resource saving, and does not generate the odor of a remaining solvent. <P>SOLUTION: The twisted package 10 includes a film 11 having a twisting characteristic, a water-based gravure ink layer 13, and an extruded low-density polyethylene 12 pasted by a water-based AC agent layer 14. In the above described structure, the film having the twisting characteristic uses any of cellophane, moisture-proof coating cellophane, a monoaxially-stretched polyolefin film, a biaxially-stretched polyolefin film, a polyester film, a polylactate film, a styrene film, a polycarbonate film, and aluminum foil. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention is a twist package, and is sanitary by devising so that gravure printing ink applied to enhance design properties does not indirectly and directly contact the contents (such as strawberries and chocolate). In addition, the present invention relates to a twist package that has improved merchantability by greatly reducing the residual solvent odor during printing and bonding.

As shown in FIG. 2, the conventional twist package 1 has an oil-based gravure ink printing layer 3 formed on the inner surface of a moisture-proof coated cellophane 2 having a twisting characteristic, for example, 300 g / m ^2. The unstretched polypropylene film 4 is generally used in the form of a stripe, and, for example, in the twist package of the reed 5, a wrinkle is formed on the surface of the unstretched polypropylene film 4 as shown in FIG. 5 is placed, and a twist 6 is added to both sides of the ridge 5.
Moreover, the following are known as other twist packages.
1. Oil-based gravure surface printing / moisture-proof coat cellophane (300 g / m ² )
2. Moisture-proof coated cellophane (300 g / m ² ) / oil-based gravure back printing / superposition / stripe milk white CPP film (25μ)
3. Cellophane (300 g / m ² ) / Oil-based gravure back printing / Wax lamination / Striped aluminum foil (7μ)
4). Oil-based gravure surface printing / uniaxially stretched polyethylene film (25μ)
5). Uniaxially stretched polyethylene film (25μ) / oil-based gravure back printing / superposition / stripe milk white CPP film (# 25μ)
6). Oil-based gravure surface printing / stretched polyester film (# 12)
In the case of the above-described conventional twist package 1, the striped milky white CPP film is only laminated on the ridge portion so that the oil-based gravure ink and the ridge are not in direct contact with each other. It has not been done.

As the film having twist characteristics, cellophane, moisture-proof coated cellophane, uniaxially stretched polyethylene film, biaxially stretched polyethylene film, polyester film, polylactic acid film, styrene, polycarbonate film and the like are generally used.
However, when a package having these twist characteristics is subjected to front printing and wound up in a roll shape, the front printing surface and the back surface (inner surface) where the contents come into direct contact come into contact with each other, and the printing ink is placed on the back surface. There are hygiene issues by migrating.

In addition, there is also a method of wrapping a striped milky white CPP film only on the part where the contents are in contact with the film, and in this case, the ink parts are exposed on both sides where the twisting is performed. When the consumer eats, the package may be twisted and peeled off at the mouth. In this case, the ink surface is in direct contact with the mouth, and there is a similar hygiene problem.
Therefore, it is conceivable to superimpose a milky white CPP film on the entire inner surface of the twist characteristic film. However, when this is done, the twist characteristic is impaired, and when the automatic machine is used, the twist speed becomes extremely slow. There is a problem that once the twist is added, the twist is loosened.
Further, when twisted packaging (individual packaging) is packed and sealed in an outer bag, if the oil-based gravure printing is performed, the residual solvent odor is filled in the outer bag and this odor becomes a problem.

  The object of the present invention is to prevent the printing ink from directly or indirectly contacting the contents (and the mouth when the consumer eats) while maintaining the twist characteristics, and further from the ink and adhesive in the outer bag. The object is to provide a hygienic and environmentally friendly twist package that is not filled with the residual solvent odor generated.

  In order to achieve the above object, the invention according to claim 1 is characterized in that the twist package comprises a film having a twist characteristic and a thermoplastic resin film bonded to the inner surface of the film. is there.

  Furthermore, in the invention described in claim 2, in the twist package according to claim 1, the film having the twist characteristic is formed by performing reverse printing or surface printing using water-based gravure ink. It is a feature.

  Furthermore, in the invention described in claim 3, in the twist package according to claim 1 or 2, as the film having the twist characteristics, cellophane, moisture-proof coated cellophane, uniaxially stretched polyolefin film, biaxially stretched polyolefin film, Any one of a polyester film, a polylactic acid film, a styrene film, a polycarbonate film, and an aluminum foil is used.

  Furthermore, in invention of Claim 4, in the twist package body in any one of Claims 1-3, the polyolefin resin film or polylactic acid resin film which consists of 3-25micro as said thermoplastic resin film Is used.

  Furthermore, in invention of Claim 5, in the twist package in any one of Claims 1-4, as a method of bonding the film which has the said twist characteristic, and a thermoplastic resin film, it is a thermoplastic resin. It is characterized in that a film formed in advance in a film shape is bonded by a dry lamination method using an aqueous adhesive.

  Furthermore, in invention of Claim 6, in the twist package body in any one of Claims 1-4, as a method of bonding together the film which has the said twist characteristic, and a thermoplastic resin film, thermoplastic resin It is characterized in that a film obtained by forming a film in advance is bonded by a dry laminating method using a solventless adhesive.

  Furthermore, in invention of Claim 7, in the twist package body of any one of Claims 1-4, as a method of bonding the film which has the said twist characteristic, and a thermoplastic resin film, it is a thermoplastic resin. It is characterized in that the films are bonded together while being formed into a film shape by extrusion lamination.

  Furthermore, in invention of Claim 8, in the twist package body in any one of Claims 1-4, as a method of bonding the film which has the said twist characteristic, and a thermoplastic resin film, it is a thermoplastic resin. When the films are bonded together while being formed into a film by an extrusion lamination method, the films are bonded together using an adhesive polarity imparting resin.

  Furthermore, in invention of Claim 9, in the twist package body in any one of Claims 1-4, as a method of bonding the film having the twist characteristic and the thermoplastic resin film, a thermoplastic resin is used. The film is laminated with an aqueous adhesive while being formed into a film by extrusion lamination.

  Furthermore, in invention of Claim 10, in the twist packaging body of any one of Claims 1-9, in the thermoplastic resin film bonded together to the film which has the said twist characteristic, it contacts with the content. The surface is subjected to uneven mat-like processing to improve the releasability from the contents.

1. A thermoplastic resin film is bonded to the inner surface of the twist characteristic film, and no solvent is used for printing ink and anchor coating agent, so it is indirectly and directly printed on the contents and further on the mouth. Hygienic because the ink surface does not contact.
2. By using water-based ink, solventless adhesive, adhesive polarity-imparting resin, and water-based anchor coating agent, the residual solvent odor can be greatly reduced and the product value is improved.
3. Since the twist characteristic is maintained, productivity (twisting speed) is not lowered.
4). Since the thermoplastic resin film is bonded to the film having twist characteristics, the film strength is improved. In particular, the use of a cellophane-based twist characteristic film makes the film brittle when dried at low temperatures in winter, and the film is cracked or torn when twisted and packaged, or when the contents are taken out. It prevents the torn film from accidentally entering the mouth.
5). Even if the contents such as wrinkles absorb moisture and the surface melts, it is easy to peel off even if it adheres to the film.
6). Since the organic solvent can be reduced by 80% or more when printing and laminating, it is possible to provide a twist package that is preferable in terms of prevention of global warming, resource saving, energy saving and the like.

In the present invention, a thermoplastic resin film is bonded to the entire surface of a film having twist characteristics, and the contents of the contents are indirectly or directly consumed. It is a twist package that is not to be used.
At this time, the thickness of the thermoplastic resin film to be bonded in order to maintain the twist characteristic was limited to 3 to 25 μm. Beyond this range, it tends to be torn and adversely affects the twisting characteristics.
In addition, the twist package is usually subjected to gravure printing in order to enhance its design properties. At this time, by using a water-based gravure ink, and further using a solvent-free adhesive and an anchor coating agent, there is an odor problem. Can be solved.

As the twist characteristic film in the twist package of the present invention, cellophane, moisture-proof coated cellophane, uniaxially stretched polyethylene, biaxially stretched polyethylene, polyester, polylactic acid, styrene, polycarbonate and the like can be used as they are.
As a method of bonding in order to eliminate the residual solvent odor, there is a dry lamination method using a water-based adhesive.
Furthermore, as a method for eliminating the residual solvent odor, there is a dry laminating method using a solventless adhesive. When this dry lamination method using a solvent-free adhesive is used, a drying process using hot air to remove the solvent after the adhesive coating is unnecessary, so that the processing speed can be greatly increased. Since drying energy (hot air) is unnecessary, energy saving is possible.

As a method of pasting, there is a method of pasting a thermoplastic resin (polyolefin resin, polylactic acid) while extruding into a film by an extrusion laminating method.
At this time, the problem of residual solvent can be solved by laminating without using an adhesive (anchor coating agent) using an adhesive polarity-imparting resin as a thermoplastic resin, or by using an aqueous anchor coating agent.
Even if the contents such as wrinkles absorb moisture and the surface melts and comes into close contact with the inner surface of the film, it is preferable to perform uneven mat-like processing on the inner surface of the thermoplastic resin film to be bonded.

FIG. 1 shows a twist package 10 according to the present invention. 11 is a twist characteristic film, 12 is an extruded low density polyethylene, 13 is an aqueous gravure ink layer, 14 is an aqueous AC (anchor coat) agent layer, and 5 is a twist packaging target.
Specifically, a twist package 10 made of moisture-proof coated cellophane (300 g / m ² ) 11 / aqueous gravure ink layer 13 / aqueous AC agent layer 14 / extruded low density polyethylene (5 μ) 12 was obtained from the outer surface.
More specifically, a moisture-proof coat cellophane (300 g / m ² ) 11 manufactured by Futamura Chemical Co., Ltd. is back-printed with water-based gravure ink [Aqua Ecole JW224] 13 manufactured by Toyo Ink Mfg. Co., Ltd. [AW605] Aqueous anchor coating agent layer 14 was coated, and [1950P] low density polyethylene (5μ) 12 manufactured by Prime Polymer Co., Ltd. was used to form a twist package 10.

From the outer surface, a twist package 10 of a moisture-proof coated cellophane (300 g / m ² ) 11 / aqueous gravure ink 13 / adhesive polarity imparting resin (10 μ) 12 was obtained.
More specifically, a moisture-proof coat cellophane (300 g / m ² ) 11 manufactured by Futamura Chemical Co., Ltd. is back-printed with water-based gravure ink [Aqua Ecole JW224] 13 manufactured by Toyo Ink Mfg. Co., Ltd. Company [AN4231C] Adhesive polar resin (10 μ) 12 was used as a twist package 10 bonded without an anchor coating agent.

From the outer surface, a twist package 10 of uniaxially stretched polyethylene (16 μ) 11 / aqueous gravure ink 13 / solventless adhesive 14 / polylactic acid film (15 μ) 12 was obtained.
More specifically, a reverse printing is performed on Toyo Ink Manufacturing Co., Ltd. water-based gravure ink [Aqua Ecoal JW224] 13 on Calarian Y (16μ) 11 manufactured by Electrochemical Co., Ltd., and the ink surface is manufactured by Toyo Morton Co., Ltd. [ADN369A / B] is a twist package 10 in which a polylactic acid film Terramac (15 μ) 12 manufactured by Unitika Ltd. is bonded by a dry lamination method with a solvent-free adhesive 14.

From the outer surface, a twisted packaging body 10 of stretched polyester film (4.5 μ) 11 / aqueous gravure ink 13 / solventless adhesive 14 / uniaxially stretched polyethylene (18μ) 12 was obtained.
More specifically, a stretched polyester film (4.5μ) 11 manufactured by Toyobo Co., Ltd. was reverse-printed with water-based gravure ink [Aqua Ecole JW224] 13 manufactured by Toyo Ink Manufacturing Co., Ltd., and the ink surface was manufactured by Toyo Morton Co., Ltd. A twist packaging body in which uniaxially stretched polyethylene hybron (# 25μ) 12 manufactured by Mitsui Chemicals, Inc. in a dry lamination method with a solvent-free adhesive 14 of [ADN369A / B] was bonded.

From the outer surface, a twist package 10 of moisture-proof coated cellophane (300 g / m ² ) 11 / water-based gravure ink 13 / adhesive polarity imparting resin (5 μ) 14 / aluminum foil (7 μ) 12 was obtained.
More specifically, a moisture-proof coat cellophane (300 g / m ² ) 11 manufactured by Futamura Chemical Co., Ltd. is back printed with water-based gravure ink [Aqua Ecole JW224] 13 manufactured by Toyo Ink Co., Ltd., and an aluminum foil is applied to the ink surface. It was set as the twist package 10 which bonded aluminum foil 12 through Mitsui-Du Pont Co., Ltd. adhesive polarity imparting resin [AN4231C resin] (5micro) 14.

  A twisted package of solids such as strawberries and chocolate.

Sectional drawing of the package which concerns on this invention Illustration of twist package Explanatory drawing of the state where the bag is twisted and wrapped

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Twist packaging body 11 Twist characteristic film 12 Extruded low density polyethylene 13 Aqueous gravure ink layer 14 Aqueous AC (anchor coat) agent layer

Claims (10)

  A twist package comprising a film having twist characteristics and a thermoplastic resin film bonded to the inner surface of the film.   The twist package according to claim 1, wherein the film having the twist property is subjected to reverse printing or surface printing by using a water-based gravure ink.   As the film having the twist property, cellophane, moisture-proof coated cellophane, uniaxially stretched polyolefin film, biaxially stretched polyolefin film, polyester film, polylactic acid film, styrene film, polycarbonate film, or aluminum foil is used. The twist package according to claim 1 or 2, characterized in that   The twist package according to any one of claims 1 to 3, wherein a polyolefin resin film or a polylactic acid resin film comprising 3 to 25 µ is used as the thermoplastic resin film.   5. The method of bonding a film having a twist characteristic and a thermoplastic resin film, wherein a thermoplastic resin film previously formed into a film shape is bonded by a dry laminating method using an aqueous adhesive. A twist package according to any one of the above.   The method of laminating a film having a twist characteristic and a thermoplastic resin film, wherein a film in which a thermoplastic resin film is previously formed into a film is laminated by a dry laminating method using a solventless adhesive. 5. The twist package according to any one of 4 above.   The twist according to any one of claims 1 to 4, wherein the film having the twisting property and the thermoplastic resin film are bonded together while the thermoplastic resin film is formed into a film by extrusion lamination. Packaging body.   The method of laminating a film having a twist characteristic and a thermoplastic resin film, wherein the thermoplastic resin film is laminated while being formed into a film by an extrusion laminating method, and is bonded using an adhesive polarizing resin. The twist package of any one of 1-4.   5. The method according to claim 1, wherein the film having the twisting property and the thermoplastic resin film are bonded together with an aqueous adhesive while forming the thermoplastic resin film into a film shape by an extrusion laminating method. Twisted packaging.   The thermoplastic resin film to be bonded to the film having the twist property, wherein the surface that contacts the contents is subjected to uneven mat-like processing to improve the releasability from the contents. The twist package according to any one of the preceding claims.

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