JP2005145485A - Cut rice cake packaging film - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cut rice cake packaging film which has superior oxygen permeability, water-vapor barrier property, strength, resilience, transparency, UV-ray permeability, tearableness and the like, is inexpensive, and is favorable for the environment. <P>SOLUTION: The cut rice cake packaging film is made of a co-extrusion resin laminated film, which has a full light transmission factor (transparency) of 80% or higher, a UV-ray transmission factor for UV-rays having a wavelength of 250 nm of 70% or higher, and an oxygen permeability of 3,000 cc/m<SP>2</SP>day atm or higher. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a cutting wrapping film.

Conventionally, resin laminated films having various layer configurations have been developed and proposed as cutting and packaging films.
As one of them, for example, a film having a low gas barrier property and a high ultraviolet transmittance, specifically, a 0PP / PE (a laminate of biaxially stretched polypropylene and polyethylene) film is known (for example, , See Patent Document 1).
In the above, a film 2 having a low gas barrier property and a high ultraviolet transmittance, specifically, for example, a 0PP / PE (biaxially stretched polypropylene and polyethylene) film is used, 1 is vacuum-packed one by one, and the cut straw is individually wrapped, and then the individually wrapped cut straw is subjected to ultraviolet sterilization treatment, and then the outer casing formed of a film having a high gas barrier property together with an oxygen scavenger or an inert gas. Wrapped and packaged ginger.
Japanese Examined Patent Publication No. 7-94245 (Examples, drawings, etc.)

However, the laminated film proposed above uses a laminating adhesive or the like to bond biaxially stretched polypropylene and polyethylene, and the both are bonded together with the adhesive layer interposed. It must be.
Therefore, it requires an operation process such as an adhesive application process, a lamination process, and the like, and accordingly, not only can not be expected to provide a cost advantage, but also for a laminate composed of a solvent system or the like. Due to the use of adhesives, etc., the working environment is deteriorated, the environment is inferior to the surrounding environment, and there are also effects such as odor due to residual solvents etc. on the contents such as cuttings, etc. It cannot be said that there is.
By the way, as a resin laminated film that individually wraps cutting straws, it is generally excellent in oxygen permeability, but for water vapor permeability, it has excellent barrier properties to prevent the permeation, strength in the case of individual packaging, Excellent in waist, etc., excellent in packaging machinery, etc., tearable, excellent in opening of bags, excellent in transparency for visually observing contents and transmitting ultraviolet rays. In addition, it is necessary to have ultraviolet sterilization treatment suitability and other characteristics.
Accordingly, the present invention provides a cut-and-wrap packaging that is excellent in characteristics such as oxygen permeability, water vapor barrier properties, strength, high waist, transparency, ultraviolet ray permeability, tearability, and the like, and is low in cost and suitable for the environment. Is to provide a film.

As a result of various studies to solve the above problems, the present inventor has paid attention to the coextrusion film forming technology. First, the polypropylene resin and the polyethylene resin are coextruded and further required. In this case, a coextrusion resin laminated film comprising 2-3 layers obtained by laminating a polypropylene resin layer and a polyethylene resin layer, etc. was formed into a thin film, and then formed into a film 2-3 above. A co-extruded resin laminated film consisting of layers is used to make a bag to produce a cut bag packaging bag, and then to wrap the cut bag one by one into the cut bag packaging bag to produce a cut bag packaging product. As a result, the coextruded resin laminated film has a total light transmittance (transparency) of 80% or more, an ultraviolet transmittance in the ultraviolet region of a wavelength of 250 nm of 70% or more, and oxygen Transparency is 000Cc / with m is ² · day · atm or more, further, co-extruded resin laminate film, since the more casting into coextrusion, for example, lamination consisting solvent system such as - possible use preparative adhesive No co-extruded resin laminated film consisting of the above two to three layers is excellent in properties such as water vapor barrier properties, strength, high waist, tearability, etc. The present invention has been completed by finding that chopping cake can be individually packaged extremely well.

That is, according to the present invention, the total light transmittance (transparency) is 80% or more, the ultraviolet transmittance in the ultraviolet region having a wavelength of 250 nm is 70% or more, and the oxygen permeability is 3000 cc / The present invention relates to a film for cutting and wrapping packaging, characterized by comprising a coextruded resin laminated film of m ² · day · atm or more.

According to the present invention described above, the cutting packaging film comprising the coextruded resin laminate film composed of 2-3 layers obtained by laminating the polypropylene resin layer and the polyethylene resin layer according to the present invention is formed by coextrusion. Therefore, for example, it is possible not to use a laminating adhesive made of a solvent system or the like, and to avoid the use of an adhesive, a reduction in processing steps, etc. It is also suitable for environmental measures.
Moreover, the cutlet packaging film comprising a co-extruded resin laminate film comprising 2-3 layers obtained by laminating a polypropylene resin layer and a polyethylene resin layer according to the present invention has a total light transmittance (transparency) of 80. % And an ultraviolet transmittance in an ultraviolet region of a wavelength of 250 nm is 70% or more, and an oxygen permeability is 3000 cc / m ² · day · atm or more. The laminated film is excellent in properties such as water vapor barrier properties, strength, high waist, tearability, and the like, and can wrap the cut pieces very well.
In addition, the cutting and wrapping film made of a coextruded resin laminated film composed of 2 to 3 layers obtained by laminating a polypropylene resin layer and a polyethylene resin layer according to the present invention is coextruded and further subjected to a weak stretching treatment. In particular, it is a resin laminated film that realizes high oxygen permeability and unidirectional tearability due to anisotropy, and is extremely useful for individual packaging of chopped straw.

The cutlet packaging film according to the present invention will be described below in more detail with reference to the drawings.
1, FIG. 2 and FIG. 3 are schematic cross-sectional views showing a few examples of the layer structure of the cutting / wrapping packaging film according to the present invention, and FIG. 4 uses the cutting / wrapping packaging film shown in FIG. FIG. 5 is a schematic perspective view showing an example of the cut bag packaging bag according to the present invention, and FIG. 5 is produced by using the cut bag packaging bag shown in FIG. 4 and filling and packaging the cut bag. It is a schematic perspective view which shows the example about the cutting and packaging product concerning this invention.

First, in the present invention, as the cutlet packaging film A according to the present invention, as shown in FIG. 1, a polypropylene resin and a polyethylene resin are used, and these are coextruded to form a polypropylene resin layer 1 and a polyethylene resin. The basic structure consists of a coextruded resin laminated film 3 in which two layers with the resin layer 2 are laminated.
Next, in the present invention, as another example of the film for cutting and wrapping according to the present invention, as shown in FIG. 2, a polypropylene resin and a polyethylene resin are used, and these are coextruded to form a polyethylene An example of the cut-off packaging film A _{1 formed} of the coextruded resin laminated film 4 in which three layers of the resin layer 2, the polypropylene resin layer 1, and the polyethylene resin layer 2 are laminated can be exemplified.
Furthermore, in the present invention, as another example of the film for cutting and wrapping according to the present invention, as shown in FIG. 3, a polypropylene resin, a mixture of a polypropylene resin and a polyethylene resin, and a polyethylene resin From the coextruded resin laminated film 6 in which three layers of a polypropylene resin layer 1, a mixture layer 5 of a polypropylene resin and a polyethylene resin, and a polyethylene resin layer 2 are laminated. An example of such a cutting wrapping film A ₂ will be described.
The above illustrations illustrate a few examples of the cutting and packaging film according to the present invention, and it goes without saying that the present invention is not limited thereto.

Next, in the present invention, description will be given of an example of a cut bag packaging bag that is made using the cut bag packaging film according to the present invention as described above. As shown in FIG. 1, the case where the cut-and-wrap packaging film A according to the present invention shown in FIG. 1 is used as an example will be described. First, two sheets of the cut-and-wrap packaging film A according to the present invention are prepared. The surfaces of the resin layers 2 and 2 are made to oppose each other, and thereafter, heat sealing is performed on three ends of the outer peripheral periphery to form seal portions 11, 11, and an opening portion upward 12 is manufactured using the cut-aid packaging film A according to the present invention, which is a three-way seal type soft packaging bag.
Next, in the present invention, as shown in FIG. 5, for chopping and wrapping made by using the chopping and wrapping film A according to the present invention, which comprises the three-sided seal type soft wrapping bag produced above. From the opening 12 of the bag B, for example, one cutting bar 13 is filled, and then individually wrapped by, for example, vacuum packaging or the like, and the upper opening 12 is heat sealed, and the upper sealing portion 14 can be produced, and a cut and wrapped product C in which one cut bar is individually packaged in a cut and wrapped bag B made using the cut and wrapped film A according to the present invention can be manufactured.
In the present invention, the cut bag packaging bag made using the cut bag packaging film according to the present invention is limited to the illustrated three-way seal type soft packaging bag packaging bag illustrated above. Needless to say, for example, a two-side seal bag, a three-side seal bag, a four-side seal bag, a gusset bag type, a self-supporting bag type, a horizontal or vertical pillow -It is possible to manufacture a cutting bag packaging bag composed of a flexible packaging bag of any packaging form such as a bag mold, a bag-in-box inner mold, and the like.
2 and 3 are used, and the bag is made in the same manner as described above to produce the cut bag packaging bag composed of soft packing bags in various packaging forms. It is something that can be done.

Next, in the present invention, the film for cutting and packaging according to the present invention, the material constituting the bag for packaging and making bags using the film, the manufacturing method thereof, etc. will be described. As the polypropylene-based resin constituting the cutting and packaging film, a propylene homopolymer or a copolymer of propylene and an α-olefin such as ethylene (copolymer) can be basically used. Furthermore, as the above copolymer (copolymer), a block copolymer (copolymer) or a random copolymer (copolymer) can be used, and in particular, a random copolymer (copolymer) is used. It is preferable to use it.
Thus, in the present invention, the polypropylene resin is excellent in melt tension, stretchability, etc., and has an inflation molding suitability described later, and in particular, a high pressure method low density polyethylene having a long chain branch described later is melted. As in the case of high tension, it is preferable to use a material in which a long chain branch is introduced into the main chain of the polypropylene resin to increase the tension in the molten state.
In the present invention, specifically, as a polypropylene resin excellent in melt tension and stretchability, a polypropylene resin composed of a block or random copolymer of propylene and ethylene or propylene and 1-octene is used. Is preferred.

Thus, in the polypropylene resin composed of a block or random copolymer of propylene and ethylene or propylene and 1-octene, the density is about 0.9 [g / cm ³ ]. The rate (MFR) is in the range of about 0.1 to 2.0 [g / 10 min], and the melt tension is in the range of 100 [mN] or more (10 [cN] or more). Can be used.
Thus, in the above, when the melt flow rate (MFR) is less than 0.1 [g / 10 min], the resin pressure rises during resin extrusion, and a large load is applied to the film forming machine. If it exceeds 2.0 [g / 10 minutes], it is not suitable for the top blowing inflation film forming method, and is not preferred because it does not blow upward. Furthermore, in the above, when the melt tension is less than 100 [mN] (less than 10 [cN]), it is not preferable because it is not suitable for the top blowing inflation film forming method.

Next, in the present invention, examples of the polyethylene-based resin that constitutes the cutting packaging film according to the present invention include ethylene, propylene, 1-butene, 1-pentene, 4-methyl-1-pentene, and 1-hexene. , 1-heptene, 1-octene, 1-nonene, 1-decene, and other such copolymers with α-olefins can be used.
Accordingly, in the present invention, the polyethylene resin is specifically described from the viewpoint of compatibility with the polypropylene resin, affinity, and the like, and further from the viewpoint of melt tension of the polyethylene resin. Specifically, it is preferable to use a copolymer of ethylene and 1-octene.
As the copolymer of ethylene and 1-octene, those having a melt flow rate (MFR) in the range of 0.1 to 4.0 [g / 10 min] and having a density of 0 The thing in the range of 880-0.920 [g / cm < ³ >] can be used.

In the above, if the melt flow rate (MFR) is less than 0.1 [g / 10 minutes], an increase in the resin pressure is not preferable because it causes the machine (film forming machine) to stop. When the melt flow rate (MFR) exceeds 4.0 [g / 10 minutes], it is not preferable because the top blown inflation film formation becomes difficult.
In addition, in the above, if the density is less than 0.880 [g / cm ³ ], it is not preferable because of a decrease in strain and rigidity (rigidity) of the entire laminate film. If it exceeds 920 [g / cm ³ ], it is not preferable because of lack of suitability as a heat seal layer (heat seal material).
In the present invention, the melt flow rate (MFR) is a value measured at (ASTM) D1238 190 ° C. 2.16 kg, and the density is a value measured at (ASTM) D1505.

Next, in the present invention, the mixture of the polypropylene resin and the polyethylene resin includes at least one of the above polypropylene resins and one or more of the above polyethylene resins. A well mixed mixture can be used.
Thus, in the present invention, as the above polypropylene resin, a homopolymer of propylene and a copolymer (copolymer) of propylene and an α-olefin such as ethylene are mixed, and the mixture is converted into a polypropylene resin. It can be used as one kind of.

Next, in the present invention, the film forming method of the cutting bag packaging film according to the present invention will be described. First, in the present invention, the polypropylene resin as described above is used, which is the main component of the vehicle, If necessary, for example, antioxidants, ultraviolet absorbers, light stabilizers, antistatic agents, antiblocking agents, lubricants (fatty acid amides, etc.), flame retardants, inorganic or organic fillers, crosslinking agents, Add one or more additives such as dyes, pigments and other colorants, modifier resins, etc., and if necessary, add solvents, diluents, etc. Kneaded to prepare a polypropylene resin composition.
In the present invention, the above-described polyethylene-based resins are used in the same manner as described above, and these are the main components of the vehicle. If necessary, for example, antioxidants, ultraviolet absorbers, light Stabilizers, antistatic agents, anti-blocking agents, lubricants (fatty acid amides, etc.), flame retardants, inorganic or organic fillers, crosslinking agents, dyes, pigments and other colorants, as well as modifying resins, etc. One or more of these additives are added, and if necessary, a solvent, a diluent and the like are added and kneaded sufficiently to prepare a polyethylene resin composition.
Furthermore, in the present invention, in the same manner as described above, the above-described polypropylene resin and polyethylene resin are used, and they are mixed to prepare a mixture. Further, the mixture is used as a main component of the vehicle, If necessary, for example, antioxidants, ultraviolet absorbers, light stabilizers, antistatic agents, antiblocking agents, lubricants (fatty acid amides, etc.), flame retardants, inorganic or organic fillers, crosslinking agents, Add one or more additives such as dyes, pigments, and other additives, and other modifiers, and if necessary, add solvents, diluents, etc., and knead thoroughly. Then, a resin composition made of a mixture of a polypropylene resin and a polyethylene resin is prepared.

In the above, when a polypropylene resin and a polyethylene resin are used and a mixture is prepared by mixing them, the blending ratio is 90 parts by weight of a polyethylene resin with respect to 10 parts by weight to 90 parts by weight of the polypropylene resin. It is preferable to mix in a blending ratio of 10 to 10 parts by weight, and further in a blending ratio of 60 to 20 parts by weight of polyethylene resin with respect to 40 to 80 parts by weight of polypropylene resin.
Thus, when the blending ratio is less than 10 parts by weight of the polypropylene resin and further less than 40 parts by weight, the waist becomes low and the suitability of the filling machine (machine) becomes low. When the amount exceeds 80 parts by weight of polypropylene resin, and further exceeds 90 parts by weight, the oxygen permeability decreases and the function as an adhesive layer is achieved. It is not preferable because it disappears.
On the contrary, when the blending ratio exceeds 60 parts by weight of the polyethylene-based resin, and further exceeds 90 parts by weight, the waist becomes low as described above, and the suitability of the filling machine (machine) decreases. Furthermore, it is not preferable because the function as an adhesive layer is lowered, and when it is less than 10 parts by weight of polyethylene-based resin, and further less than 20 parts by weight, in the same manner as described above, the oxygen permeability decreases and adhesion This is not preferable because it does not function as a layer.

In the present invention, as a polypropylene resin, a homopolymer of propylene and a copolymer (copolymer) of propylene and an α-olefin such as ethylene are mixed, and the mixture is used as one kind of polypropylene resin. In this case, the blending ratio of 90 to 30 parts by weight of copolymer (copolymer) with respect to 10 to 70 parts by weight of homopolymer, and further the copolymer with respect to 25 to 55 parts by weight of homopolymer. (Copolymer) It is preferably used in a blending ratio of 75 to 45 parts by weight.
Thus, in the above blending ratio, it is not preferred that the homopolymer is less than 10 parts by weight, and further less than 25 parts by weight, because the waist and transparency are lowered, and the homopolymer is 55 parts by weight. If the amount exceeds 70 parts by weight, and if it exceeds 70 parts by weight, it is not preferable because it is not suitable for compatibility with the polyethylene-based resin, inflation film-forming properties, and the like.
On the contrary, in the above blending ratio, if the copolymer exceeds 75 parts by weight, and further exceeds 90 parts by weight, it is not preferable due to the reason that the waist and transparency are lowered as described above. If the amount of the copolymer is less than 30 parts by weight, and further less than 45 parts by weight, it is not preferable because the compatibility with the polyethylene-based resin and the film forming property of the inflation are not suitable. Is.

  Next, in the present invention, the polypropylene-based resin composition and the polyethylene-based resin composition prepared above are used, for example, an inflation coextrusion film forming method or a T-die coextrusion film forming method. Co-extruded resin film, co-extruded resin laminated film in which two layers of polypropylene resin layer and polyethylene resin layer are laminated, or two types of polyethylene resin layer, polypropylene resin layer and polyethylene resin layer It is possible to form a film for cutting and wrapping packaging according to the present invention comprising a coextruded resin laminated film in which three layers are laminated. In the present invention, the polypropylene resin composition prepared above, a resin composition comprising a mixture of a polypropylene resin and a polyethylene resin, and a polyethylene resin composition are used. -Co-extrusion using a co-extrusion film-forming method or T-die co-extrusion film-forming method, a polypropylene resin layer, a mixture layer of a polypropylene resin and a polyethylene resin, and a polyethylene resin layer It is possible to form a film for cutting and wrapping packaging according to the present invention comprising a coextruded resin laminated film in which three layers are laminated.

  Thus, in the present invention, the film is formed by coextrusion film formation by the above-described inflation coextrusion film formation method or T-die coextrusion film formation method, and then further in the flow direction (MD) is set to 0.00. Polypropylene based on 5% -20% orientation stretching treatment and weak stretching treatment, which realizes particularly high oxygen permeability and unidirectional tearability due to anisotropy, and is extremely useful for packaging packaging Coextruded resin laminated film in which two types and two layers of resin layer and polyethylene resin layer are laminated, or coextruded resin in which two types and three layers of polyethylene resin layer, polypropylene resin layer and polyethylene resin layer are laminated Co-extruded resin laminate film, which is a laminated film or a laminate of three layers of polypropylene resin layer, a mixture layer of polypropylene resin and polyethylene resin, and polyethylene resin layer. Rice cake packaging film according to the present invention comprising a beam is capable of manufacturing the film-forming the.

  Furthermore, in the present invention, when forming the film for cutting and wrapping according to the present invention, among the above-mentioned inflation coextrusion film forming methods or T-die coextrusion film forming methods, It is preferable to form a film by a blown inflation coextrusion film forming method. The above-mentioned top blown inflation coextrusion film forming method will be described in more detail. Using the polypropylene resin composition and the polyethylene resin composition prepared above, the polypropylene resin layer by the polypropylene resin composition is For example, a plurality of extruders are formed so that one layer constituting the coextruded resin laminated film is formed, and the polyethylene resin layer by the polyethylene resin composition is laminated on one side or both sides of the polypropylene resin layer. Using a multi-layer circular die, first, each resin layer is extruded from a circular die by a plurality of extruders, and then the extruded tube-shaped molten resin is expanded into bubbles. The tube-shaped bubble immediately after extrusion is removed from the surroundings while taking up upward and preventing the bubble from shaking and stabilizing. To manufactured form a film cooled by blowing cold air, further, if desired, subjected to a weak stretching process is for manufacturing the film-forming the rice cake packaging film according to the present invention. Thus, in the present invention, as described above, a cylindrical coextruded resin laminated film is formed into a film by using an upward inflation coextrusion molding method using an air cooling method, and the coextruded resin laminated film is formed. A film for cutting and wrapping according to the present invention, wherein the constituting layer is composed of a polypropylene resin layer, and a cylindrical coextruded resin laminate film in which a polyethylene resin layer is laminated on one or both sides of the polypropylene resin layer. Can be manufactured.

  Furthermore, in the present invention, for the above-mentioned top blown inflation coextrusion film-forming method, the polypropylene resin composition prepared above, a resin composition comprising a mixture of a polypropylene resin and a polyethylene resin, and a polyethylene resin A resin composition comprising a polypropylene resin layer formed from the polypropylene resin composition and forming an outer layer constituting a coextruded resin laminated film; and a resin composition comprising a mixture of a polypropylene resin and a polyethylene resin. The mixture layer of the polypropylene resin and the polyethylene resin by the product forms the core layer constituting the coextruded resin laminated film, and the polyethylene resin layer by the polyethylene resin composition further forms the coextruded resin laminated film. For example, multiple extruders and multi-layer -First, each resin layer is extruded from a circular die by a plurality of extruders using a curl die, and then the extruded tube-shaped molten resin is expanded in a bubble shape and taken upward. At that time, while preventing the bubble from shaking and stabilizing it, the tube-like bubble immediately after extrusion was cooled by blowing cold air around the outer peripheral surface to form a film. A cutting board according to the present invention comprising a coextruded resin laminated film obtained by laminating three types and three layers of a polypropylene resin layer, a mixture layer of a polypropylene resin and a polyethylene resin, and a polyethylene resin layer after being subjected to stretching treatment It is preferable to form a packaging film.

Next, in the present invention, the total film thickness of the cut and wrapped packaging film according to the present invention produced as described above, and further the film thickness of each layer constituting the film, will be described first. As the total film thickness, for example, in the case of a co-extruded resin laminated film in which two layers of a polypropylene resin layer and a polyethylene resin layer are laminated, about 20 to 150 μm, preferably about 30 to 90 μm is desirable. In the case of a co-extruded resin laminated film in which two or three layers of a polyethylene resin layer, a polypropylene resin layer, and a polyethylene resin layer are laminated, about 30 to 250 μm, preferably about 45 to 140 μm is desirable. Three layers of three layers: a polypropylene resin layer, a mixture layer of a polypropylene resin and a polyethylene resin, and a polyethylene resin layer If you coextruded resin laminate film was about 25～190Myuemu, preferably those 40~120μm position is desirable.
In the above, in the case of a coextruded resin laminated film in which two types and two layers are laminated, if the total film thickness is less than 20 μm, and further less than 30 μm, from the viewpoint of mechanical suitability to a filling machine due to low waist. Further, it is not preferable, and if it exceeds 90 μm and further exceeds 150 μm, it is not preferable from the viewpoint of oxygen permeability, tearability and the like.
Further, in the above, in the case of a coextruded resin laminated film in which two types and three layers are laminated, if the total film thickness is less than 30 μm, and further less than 45 μm, the mechanical suitability to the filling machine is reduced due to low waist. It is not preferable from the viewpoint, and if it exceeds 140 μm and further exceeds 250 μm, it is not preferable from the viewpoints of oxygen permeability, tearability and the like.
Furthermore, in the above, in the case of a co-extruded resin laminated film in which three types and three layers are laminated, if the total film thickness is less than 25 μm, and further less than 40 μm, the waist becomes low, and the suitability of the filling machine is further reduced. In addition, it is not preferable for the reason of, and if it exceeds 120 μm and further exceeds 190 μm, it is not preferable from the viewpoint of oxygen permeability, tearability and the like.

Thus, in the present invention, in the case of the above-described coextruded resin laminated film in which two types and two layers are laminated, or in the case of a coextruded resin laminated film in which two types and three layers are laminated, a polypropylene resin layer and a polyethylene resin As the film thickness of each layer of the layer, the film thickness of the polypropylene resin layer is about 10 to 50 μm, preferably about 15 to 40 μm, and the film thickness of the polyethylene resin layer is about About 10 to 100 μm, preferably about 15 to 50 μm is desirable.
In the above, if the film thickness of the polypropylene-based resin layer is less than 10 μm, and further less than 15 μm, it is not preferable because the waist becomes low and the handling and filling machine suitability deteriorates, and more than 50 μm, Furthermore, if it exceeds 40 μm, it is not preferable from the viewpoint of oxygen permeability.
Further, in the above, if the film thickness of the polyethylene resin layer is less than 10 μm, and further less than 15 μm, it is not preferable because the seal strength becomes unstable, and more than 100 μm, If it exceeds 50 μm, it is not preferable from the viewpoint of oxygen permeability and tearability.

In the present invention, in the case of a coextruded resin laminated film in which three types and three layers are laminated, the film thickness of each layer of a polypropylene resin layer, a mixture layer of a polypropylene resin and a polyethylene resin, and a polyethylene resin layer As the film thickness of the polypropylene resin layer, about 10 to 50 μm, preferably about 15 to 40 μm is desirable, and the film thickness of the mixture layer of polypropylene resin and polyethylene resin is as follows: About 5 to 40 μm, preferably about 10 to 30 μm is desirable, and the film thickness of the polyethylene resin layer is about 10 to 100 μm, preferably about 15 to 50 μm.
In the above, if the film thickness of the polypropylene-based resin layer is less than 10 μm, and further less than 15 μm, it is not preferable because the waist becomes low and handling and filling machine suitability deteriorates, and more than 50 μm, Furthermore, if it exceeds 40 μm, it is not preferable from the viewpoint of oxygen permeability.
In the above, the film thickness of the mixture layer of the polypropylene resin and the polyethylene resin is less than 5 μm, more preferably less than 10 μm, from the viewpoint of waist and transparency, and more than 40 μm. Furthermore, if it exceeds 30 μm, the physical properties of the adhesive layer greatly affect the whole, which is not preferable because the physical property control becomes complicated.
Further, in the above, if the film thickness of the polyethylene resin layer is less than 10 μm, and further less than 15 μm, it is not preferable because the seal strength becomes unstable, and more than 100 μm, If it exceeds 50 μm, it is not preferable from the viewpoint of oxygen permeability and tearability.

A co-extruded resin laminated film obtained by laminating two types and two layers according to the present invention produced above or a co-extruded resin laminated film comprising two types and three layers laminated is composed of a polyethylene resin and a polypropylene resin. Are melted to each other, both of which show compatibility, affinity, etc., both of which are firmly welded, and in particular, a polyethylene-based resin that forms a film while pulling the molded laminated film upward using an air cooling method The polypropylene resin layer can be formed by the inflation coextrusion molding method, which forms the film while taking up the molded laminated film using the air cooling method. is there.
Thus, the co-extruded resin laminated film in which the two types and two layers according to the present invention are laminated, or the cutout packaging film made of the coextruded resin laminated film in which the two types and three layers are laminated includes a polyethylene resin layer and a polypropylene type film. The resin layer is extremely tightly adhered and exhibits the characteristics of both. For example, since it is excellent in transparency, it is possible to see the individually packaged cutout through the outside and to observe the ultraviolet rays. Since it is excellent in permeability, it has an advantage that it has suitability for ultraviolet sterilization by ultraviolet sterilization after individual packaging of the cut straw.
Moreover, the co-extruded resin laminated film obtained by laminating two types and two layers according to the present invention, or the cutout packaging film comprising the coextruded resin laminated film obtained by laminating two types and three layers includes a polyethylene resin layer and a polypropylene resin layer. Each of these properties is expressed as a synergistic effect, and the opening, blocking resistance, slipperiness, waist / rigidity, impact resistance, pinhole resistance, etc. are good, as well as flexibility, heat Excellent water-to-seal properties, laminating properties, etc. In addition, the coextruded resin laminated film of polyethylene resin layer and polypropylene resin layer provides excellent oxygen permeability and water vapor barrier properties that prevent water vapor transmission The film for cutting and packaging according to the present invention comprising a co-extruded resin laminated film that is excellent in film formation, capable of high-speed film formation, has excellent film formation stability, and has little curling property. It is capable of producing Lum.

In particular, the co-extruded resin laminated film in which two types and two layers according to the present invention are laminated, or the cutout packaging film made of a coextruded resin laminated film in which two types and three layers are laminated, has the strength, rigidity, and elasticity of polypropylene resin. Properties such as the strength of polyethylene, the flexibility and heat seal properties of polyethylene resins, etc., exhibiting synergistic effects, excellent transparency, openability, blocking resistance, slipping Properties, stiffness / rigidity, impact resistance, pinhole resistance, etc. are also good, and it is also excellent in flexibility, heat seal characteristics, lamination characteristics, etc. Almost never recognized, it is suitable for packaging machinery to individually wrap the chopsticks and can produce a fully satisfactory chopped wrapping product, and even after the wrapping, the film breaks even if the corner of the chopsticks touches the film Phenomenon It is those that do not observed.
Moreover, the cutout packaging which cut and wrapped individual cutlets using the coextrusion resin lamination film which laminated | stacked 2 types and 2 layers concerning this invention, or the film for cutting and packaging which consists of a coextrusion resin lamination film which laminated | stacked 2 types and 3 layers The product has an advantage that the cutting bag can be easily taken out by tearing the packaging bag because the film has excellent tearability.
Furthermore, in the present invention, the coextrusion laminating method is used to produce a film for cutting and wrapping according to the present invention, so that the coextruded resin laminated film can be formed at a high speed. In addition, when the film is made into a sex film, it is excellent in film-forming stability, and the manufacturing cost can be remarkably reduced, and a very useful film for cutting and packaging according to the present invention can be manufactured.
Further, in the present invention, when a film is formed using a coextrusion lamination method, a solvent-based adhesive such as a laminating adhesive is not used, and therefore, there is an adverse effect associated therewith, for example, It is possible to improve the complexity of the work process, the maintenance of the work environment, the environmental response, etc.

In addition, in the present invention, in the case of a cutting and wrapping film made of a coextruded resin laminated film in which three types and three layers are laminated, originally, the polyethylene resin and the polypropylene resin are compatible with each other in compatibility and affinity. Inferior, it is difficult to co-extrusion of both, especially polypropylene resin, because of its low melt tension, against the gravity, using the air cooling method to face the molded film upward It is said that it is impossible to form a film by an inflation molding method in which the film is formed while taking the film.
Thus, in the present invention, a polypropylene resin excellent in melt tension and stretchability is selected as the polypropylene resin, and the polypropylene resin and the polyethylene resin are interposed between the polypropylene resin layer and the polyethylene resin layer. 3 types and 3 layers of a polypropylene resin layer, a mixture layer of a polypropylene resin and a polyethylene resin, and a polyethylene resin layer are laminated to form a film with a mixture layer of the resin based resin interposed. From the above-mentioned polypropylene resin and polyethylene resin mixture layers, the polyethylene resin and polypropylene resin of each layer are melted together, and the three types of three layers exhibit compatibility, affinity, etc. , The three types, three layers are firmly welded, and in particular, a polyester film is formed by taking up the molded laminated film upward using an air cooling method. Following the inflation moldability of len resin, the polypropylene resin layer can also be formed by the inflation coextrusion molding method, which forms the film while pulling upward the molded laminated film using the air cooling method. It will be.

In more detail, the cutout packaging film made of the coextruded resin laminated film obtained by laminating the three types and three layers according to the present invention produced above, the polyethylene resin and the polypropylene resin constitute the coextruded resin laminated film. In each layer or layer, they melt together, both show compatibility, affinity, etc., both of them are firmly welded, and an air cooling method is used to form a film while pulling the molded film upward Following the inflation moldability of the polyethylene resin, the mixture layer made of a mixture of the polypropylene resin and the polyethylene resin constituting the core layer is also formed into a film while taking the molded film using the air cooling method upward. The film can be formed by an inflation molding method.
Thus, the cutout packaging film comprising the coextruded resin laminated film in which the three types and three layers according to the present invention are laminated comprises a mixture layer of a mixture of a polypropylene resin and a polyethylene resin, and a polypropylene layer on one surface thereof. The resin layer is on the other side, and the polyethylene-based resin layer is extremely firmly and tightly bonded, and exhibits the characteristics of the three types and three layers, excellent in transparency, and has an opening property, blocking resistance, Good sliding, stiffness / rigidity, impact resistance, pinhole resistance, etc. Furthermore, it has excellent flexibility, heat seal characteristics, laminating characteristics, etc. In addition, it is possible to form a coextruded resin laminated film having a strip shape that is capable of high-speed film formation, is excellent in film-forming stability, and has little curling property.

  That is, the cut and wrapping film made of the coextruded resin laminated film in which the above-described three kinds and three layers according to the present invention are laminated uses the advantages of both of the polyethylene resin and the polypropylene resin. -Based resin mainly exhibits functions such as flexibility and heat-sealability, and polypropylene-based resin exhibits functions such as waist and rigidity. In addition, it has good opening, blocking resistance, slipperiness, waist / rigidity, impact resistance, body pinhole property, etc., and flexibility, heat seal characteristics, laminating characteristics In addition, there is almost no phenomenon such as delamination, and it is suitable for filling and packaging of contents such as chopping scraps, it has excellent storage and storage properties, and high-speed film formation is possible. And film formation Excellent qualitative, Ca - it can capable of producing a co-extruded resin laminate film obtained by laminating three-kind three-layer less ring resistance, is that it is possible to produce a packaged product capable of satisfying sufficiently.

Thus, the cutting and packaging film comprising the coextruded resin laminated film in which the three types and three layers according to the present invention are laminated comprises a polypropylene resin layer, a mixture layer of a polypropylene resin and a polyethylene resin, and a polyethylene resin. The three layers are extremely tightly bonded together and exhibit the characteristics of both. For example, since it is excellent in transparency, it is possible to visually see the individually wrapped chopsticks from the outside. In addition, since it is excellent in ultraviolet transmittance, it has an advantage that it has suitability for ultraviolet sterilization treatment by ultraviolet sterilization after individual packaging of the cut straw.
In particular, the cutting wrapping film comprising the coextruded resin laminated film in which the three types and three layers according to the present invention are laminated is characterized by the properties such as the strength, rigidity, waist strength, etc. of the polypropylene resin, the flexibility of the polyethylene resin, Combined with heat seal properties, etc., exhibiting its synergistic effect, excellent transparency, opening, blocking resistance, slipperiness, stiffness / rigidity, impact resistance, pinhole resistance In addition, it has excellent flexibility, heat seal characteristics, laminating characteristics, etc., almost no phenomena such as delamination, and suitability for packaging machinery for individually wrapping cutting chips. In addition, it is possible to produce a fully-satisfied cut sachet package product, and even after the wrapping, even if the corner of the sledget comes into contact with the film, there is no phenomenon such as the film being broken or broken. .
In addition, the cutting wrapping film made of the coextruded resin laminated film in which the three types and three layers according to the present invention are laminated uses the advantages of both by using a polyethylene resin and a polypropylene resin, and is oxygen permeable. In addition, it is possible to produce a cutting and wrapping film according to the present invention comprising a co-extruded resin laminated film that is excellent in water vapor permeability and prevents water vapor permeation.

Furthermore, the cut-off packaging product in which cut-off packaging is individually packaged using the cut-out packaging film made of the co-extruded resin laminated film in which the three types and three layers according to the present invention are laminated, because the film is excellent in tearing property. It has the advantage that the bag can be easily removed by tearing the bag.
In the present invention, the coextrusion laminating method is used to form a film, and the film for cutting and wrapping according to the present invention is manufactured. Therefore, the coextruded resin laminated film can be formed at a high speed. In addition, when forming the film, the film forming stability is excellent, and the manufacturing cost can be remarkably reduced, and the extremely useful cutting and packaging film according to the present invention can be manufactured.
Further, in the present invention, when a film is formed using a coextrusion lamination method, a solvent-based adhesive such as a laminating adhesive is not used, and therefore, there is an adverse effect associated therewith, for example, It is possible to improve the complexity of the work process, the maintenance of the work environment, the environmental response, etc.

By the way, as the resin laminated film for individually wrapping the cut straw, it is generally excellent in oxygen permeability, but for water vapor permeability, it has excellent barrier properties to prevent the permeation, and in the case of individual packaging, Excellent in waist, etc., excellent in packaging machinery, etc., tearable, excellent in bag opening, excellent transparency for visually observing contents, and transmits ultraviolet rays. In addition, it is necessary to have ultraviolet sterilization treatment suitability and other characteristics.
In particular, the resin laminated film for individually wrapping the cut straw preferably has excellent total light transmittance (transparency), ultraviolet transmittance in an ultraviolet region having a wavelength of 250 nm, oxygen permeability, and the like. The coextruded resin laminated film in which the above-described two types, two layers, two types, three layers, or three types, three layers according to the present invention are stacked has a total light transmittance (transparency) of 80% or more. Is 85% or more, and the ultraviolet transmittance in the ultraviolet region at a wavelength of 250 nm is 70% or more, and further 75% or more, and the oxygen permeability is 3000 cc / m ² · day ·. It consists of a coextruded resin laminated film that is atm or higher.
Furthermore, the coextruded resin laminated film in which the above-described two types, two layers, two types, three layers, or three types, three layers according to the present invention are stacked has a total light transmittance (transparency) of 85 to 98%. In addition, the ultraviolet transmittance in the ultraviolet region at a wavelength of 250 nm is in the range of 75 to 90%, and the oxygen permeability is 3000 cc / m ² · day · atm to 5000 cc. It is desirable that it is within the range of / m ² · day · atm.

In the above, it is preferable that the total light transmittance (transparency) is less than 80%, more preferably less than 85%, because it is difficult to visually recognize the contents (foam) and the customer cannot be reassured. There is nothing.
Moreover, in the above, it is preferable that the ultraviolet light transmittance in the ultraviolet region with a wavelength of 250 nm is less than 70%, more preferably less than 75%, because the ultraviolet sterilizing effect is reduced and the growth of mold, fungi, etc. is caused. There is nothing.
Furthermore, in the above, when the oxygen permeability is less than 3000 cc / m ² · day · atm, and further less than 3500 cc / m ² · day · atm, the oxygen contained in the contents (bag) It is not preferable because it is filled with water and causes oxidative deterioration, and if it exceeds 5000 cc / m ² · day · atm, it is preferable that the oxygen permeability is high, but at the same time, the water vapor permeability is also increased. It is not preferable because it causes drying and cracking.

Next, in the present invention, a method for making a bag for chopping and wrapping according to the present invention will be described. For example, the film for chopping and wrapping according to the present invention manufactured above is used. The polyethylene resin layer faces each other and folded, or the two sheets are overlapped, and the outer peripheral peripheral edge is heat sealed to provide a seal portion to provide a bag. The body can be configured.
Thus, as the bag making method, the cutting and packaging film according to the present invention is folded with the polyethylene-based resin layer facing each other, or the two sheets are overlapped, and the peripheral edge of the outer periphery For example, the side seal type, the two-sided seal type, the three-sided seal type, the four-sided seal type, the envelope-attached seal type, the joint-attached seal type (pillar seal type) ), Heat-sealed in the form of heat seal such as pleated seal type, flat bottom seal type, square bottom seal type, etc., and using the film for cutting and wrapping according to the present invention Thus, it is possible to manufacture cut bag packaging bags having various forms.
In addition, for example, a self-supporting packaging bag (standing pouch) or the like can be manufactured.
In the above, as the heat seal method, for example, a bar seal, a rotary roll seal, a belt seal, an impulse seal, a high frequency seal, an ultrasonic seal and the like are known. It can be done by the method.

Thus, in the present invention, the cut bags are put into the cut bag packaging bag made as described above one by one, and if necessary, the packing process is performed by adding a packaging process such as deaeration packaging, vacuum packaging, etc. By doing so, the cut and wrapped product in which the cut and wrapped are individually packaged can be manufactured.
In the above, not only one piece but also two or more pieces may be packaged, and the shape of the cut piece may be any shape.
In the present invention, the cut and wrapped products individually packaged as described above, for example, after the post-treatment such as ultraviolet sterilization, usually, several to dozens or more of cut and wrapped products are again, A large soft packaging bag is filled and packaged with oxygen scavengers to produce a bag packaging product.
Thus, as a packaging material for making a large flexible packaging bag filled and packaged with the above-mentioned cut and packaged product, it is excellent in moisture proofing and the like, in particular, excellent in gas barrier property that prevents permeation of oxygen gas, water vapor and the like. It is said that it is necessary.
As the packaging material, for example, at least a packaging material in which a base film, a barrier base material, a heat-seal resin layer, etc. are laminated can be used. To produce a large flexible packaging bag of various forms, and then several to a dozen or more chopped packaging products in the large flexible packaging bag. , Packing and packaging, and manufacturing candy packaging products.
In the above, as the barrier substrate, for example, a single layer film of polyvinylidene chloride resin, a co-extruded film using a polyvinylidene chloride resin, a coat film made of a polyvinylidene chloride resin composition, an ethylene-vinyl alcohol Copolymer film, nylon MXD6 resin film, etc. can be used.
Furthermore, as the above-mentioned barrier base material, for example, a vapor-deposited film of a metal such as aluminum, silicon oxide, oxide, etc. on one side of a base material film such as a polyester resin film, a polyamide resin film or a polypropylene resin film A barrier material provided with a vapor-deposited film of a metal oxide such as aluminum or the like can be used.

Hereinafter, the present invention will be described in more detail with reference to examples.
(1). First, the following resin compositions (a) and (b) were prepared.
(I). Resin composition Ethylene-1 / octene copolymer copolymerized using a single-site catalyst (metallocene catalyst) (Dow Chemical Japan Co., Ltd., trade name, AFFINITY PF1140: density = 0.898 g / cm ³ , A resin composition comprising 100 parts by weight of melt flow rate, MFR = 1.6 g / 10 min) was prepared.
(B). Resin composition From 100 parts by weight of functional polypropylene (propylene-ethylene copolymer, density = 0.900 g / cm ³ , melt flow rate, MFR = 1.8 g / 10 min) made of a polypropylene random copolymer A resin composition was prepared.
Next, using the resin composition prepared above, using a two-type two-layer top-blown air-cooled inflation coextrusion film-forming machine, the layer of the resin composition of (A) is 25 μm, ( The layers of the resin composition of (b) are coextruded to 25 μm and formed into a film with a blow ratio of 1.8, and the present invention comprises a coextruded inflation laminate film of two types and two layers with a total thickness of 50 μm A cut wrapping packaging film was produced.
When the physical properties of the above-described cutlet packaging film were measured, it showed high stiffness and rigidity.
Also, the interlayer strength at each lamination interface was high, and no phenomenon such as peeling at the lamination interface was observed in the tensile test after heat sealing between the polyethylene resin layers.
Next, using the film for cutting and wrapping packaging formed as described above, making a pillow bag, filling and packaging the cutting paddle into it, and manufacturing the cutting paddy packaging product, the machine suitability for packaging the cutting paddle individually Excellent and individual packaging was possible without any problem.
In addition, the cut and packaged product can be visually recognized from the outside, and is excellent in tearing suitability by the opening operation.
Moreover, it was able to confirm that the cutting board packaging film formed into the above film has a very high oxygen permeability and is suitable as a cutting board packaging film.
(2). On the other hand, biaxially stretched nylon 6 film with a thickness of 20 μm / printed pattern layer / laminate adhesive layer / biaxially stretched polyethylene terephthalate film with a thickness of 12 μm / deposited film of silicon oxide with a thickness of 200 mm / plasma treatment Surface / primer layer / laminate adhesive layer / 50 μm thick linear low density polyethylene film packaging material is used, and two of the packaging materials are prepared. The surface of the low-density polyethylene film is overlapped with each other, and then the outer peripheral edge is sealed in three directions to form a seal portion and a three-way seal having an opening above it. Type soft packaging bag, and then filling and packaging the cut-and-wrap packaging product individually packaged from the opening into the three-sided seal type soft packaging bag, and as an oxygen scavenger , “Ageless” (Mitsubishi斯化 Chemical Industry Co., Ltd. put trade name), then the opening heat - tosylate - and Le, the upper sheet - to form the pole tip, to produce a rice cake packaging products.
The soot-packed product produced above has excellent barrier properties against oxygen gas, water vapor, etc., has excellent laminating strength, etc., withstands distribution in the market, and is excellent in storage and storage.

(1). First, the following resin compositions (a) and (b) were prepared.
(I). Resin composition Ethylene-1 / octene copolymer copolymerized using a single-site catalyst (metallocene catalyst) (Dow Chemical Japan Co., Ltd., trade name, AFFINITY PF1140: density = 0.898 g / cm ³ , A resin composition comprising 100 parts by weight of melt flow rate, MFR = 1.6 g / 10 min) was prepared.
(B). Resin composition From 100 parts by weight of functional polypropylene (propylene-ethylene copolymer, density = 0.900 g / cm ³ , melt flow rate, MFR = 1.8 g / 10 min) made of a polypropylene random copolymer A resin composition was prepared.
Next, using the resin composition prepared above, using a two-type two-layer top-blown air-cooled inflation coextrusion film-forming machine, the layer of the resin composition of (A) is 20 μm, ( The layers of the resin composition of (b) are each coextruded to 30 μm, formed into a film with a blow ratio of 1.8, and the present invention comprises a coextruded inflation laminate film of two types and two layers with a total thickness of 50 μm. A cut wrapping film was produced.
When the physical properties of the above-described cutlet packaging film were measured, it showed high stiffness and rigidity.
Also, the interlayer strength at each lamination interface was high, and no phenomenon such as peeling at the lamination interface was observed in the tensile test after heat sealing between the polyethylene resin layers.
Next, using the film for cutting and wrapping packaging formed as described above, making a pillow bag, filling and packaging the cutting paddle into it, and manufacturing the cutting paddy packaging product, the machine suitability for packaging the cutting paddle individually Excellent and individual packaging was possible without any problem.
In addition, the cut and packaged product can be visually recognized from the outside, and is excellent in tearing suitability by the opening operation.
Moreover, it was able to confirm that the cutting board packaging film formed into the above film has a very high oxygen permeability and is suitable as a cutting board packaging film.
(2). On the other hand, biaxially stretched nylon 6 film having a thickness of 15 μm, vapor-deposited film of silicon oxide having a thickness of 200 mm, plasma-treated surface / primer layer / printing pattern layer / adhesive layer for laminating / straight chain having a thickness of 50 μm Use a packaging material composed of a layered structure of a low-density polyethylene film, prepare two sheets of the packaging material, and face each other with the linear low-density polyethylene film facing each other. A three-sided seal type flexible packaging bag having an opening at the top is formed by forming a seal part by three-side heat sealing the end, and then the three-sided seal type flexible packaging In the sachet, from the opening, the chopped wrapping product individually packed as described above is filled and packaged, and further, an oxygen scavenger is put in the same manner as in Example 1 above. The upper seal part was formed to manufacture the bag packaging product .
The soot-packed product produced above has excellent barrier properties against oxygen gas, water vapor, etc., has excellent laminating strength, etc., withstands distribution in the market, and is excellent in storage and storage.

(1). First, the following resin compositions (a) and (b) were prepared.
(I). Resin composition Ethylene-1 / octene copolymer copolymerized using a single-site catalyst (metallocene catalyst) (Dow Chemical Japan Co., Ltd., trade name, AFFINITY PF1140: density = 0.898 g / cm ³ , A resin composition comprising 100 parts by weight of melt flow rate, MFR = 1.6 g / 10 min) was prepared.
(B). Resin composition From 100 parts by weight of functional polypropylene (propylene-ethylene copolymer, density = 0.900 g / cm ³ , melt flow rate, MFR = 1.8 g / 10 min) made of a polypropylene random copolymer A resin composition was prepared.
Next, using the resin composition prepared above, using a two-type two-layer top-blown air-cooled inflation coextrusion film-forming machine, the layer of the resin composition of (A) is 25 μm, ( The layers of the resin composition of (b) are coextruded to 25 μm, and further formed into a film while being stretched in the flow direction at a weak stretch ratio of 7%, thereby coextrusion inflation of 2 types and 2 layers with a total thickness of 50 μm A film for cutting and wrapping packaging according to the present invention comprising a laminate film was produced.
When the physical properties of the above-described cutlet packaging film were measured, it showed high stiffness and rigidity.
Also, the interlayer strength at each lamination interface was high, and no phenomenon such as peeling at the lamination interface was observed in the tensile test after heat sealing between the polyethylene resin layers.
Next, using the film for cutting and wrapping packaging formed as described above, making a pillow bag, filling and packaging the cutting paddle into it, and manufacturing the cutting paddy packaging product, the machine suitability for packaging the cutting paddle individually Excellent and individual packaging was possible without any problem.
In addition, the cut and packaged product can be visually recognized from the outside, and is excellent in tearing suitability by the opening operation.
Moreover, it was able to confirm that the cutting board packaging film formed into the above film has a very high oxygen permeability and is suitable as a cutting board packaging film.
(2). On the other hand, a biaxially stretched polyethylene terephthalate film having a thickness of 12 μm, a vapor-deposited film of silicon oxide having a thickness of 200 mm, a plasma-treated surface / primer layer / printing pattern layer / laminate adhesive layer / thickness 15 μm Using a packaging material composed of a biaxially stretched nylon 6 film / laminate adhesive layer / 50 μm thick linear low-density polyethylene film, prepare two sheets of the packaging material. The surface of the low-density polyethylene film is overlapped with each other, and then the outer peripheral edge is sealed in three directions to form a seal portion and a three-way seal having an opening above it. Type soft packaging bag, and then filling and packaging the cut-and-wrap packaging product individually packaged from the opening into the three-sided seal type soft packaging bag. Add oxygen scavenger as in 1 Then the opening heat - tosylate - and Le, the upper sheet - to form the pole tip, to produce a rice cake packaging products.
The soot-packed product produced above has excellent barrier properties against oxygen gas, water vapor, etc., has excellent laminating strength, etc., withstands distribution in the market, and is excellent in storage and storage.

(1). First, the following resin compositions (a), (b), and (c) were prepared.
(I). Resin composition Ethylene-1 / octene copolymer copolymerized using a single-site catalyst (metallocene catalyst) (Dow Chemical Japan Co., Ltd., trade name, AFFINITY PF1140: density = 0.898 g / cm ³ , A resin composition comprising 100 parts by weight of melt flow rate, MFR = 1.6 g / 10 min) was prepared.
(B). 70.0 parts by weight of a functional polypropylene composed of a polypropylene random copolymer (propylene-ethylene copolymer, density = 0.900 g / cm ³ , melt flow rate, MFR = 1.8 g / 10 min), The same ethylene-octene copolymer (made by Dow Chemical Japan Co., Ltd., trade name, AFFINITY PF1140: Density = 0.898 g / cm ³ , melt flow rate, MFR = 1.6 g / 10 min) 30.0 parts by weight were prepared.
(C). Resin composition From 100 parts by weight of functional polypropylene (propylene-ethylene copolymer, density = 0.900 g / cm ³ , melt flow rate, MFR = 1.8 g / 10 min) made of a polypropylene random copolymer A resin composition was prepared.
Next, using the resin composition prepared above, using a three-type three-layer top-blown air-cooled inflation co-extrusion film forming machine, the layer of the resin composition of (A) is 25 μm, ( The layer of the resin composition of (b) is 10 μm and the layer of the resin composition of (c) is 15 μm, respectively, to form a film with a blow ratio of 1.8. A film for cutting and wrapping packaging according to the present invention comprising an extruded inflation laminate film was produced.
When the physical properties of the above-described cutlet packaging film were measured, it showed high stiffness and rigidity.
Also, the interlayer strength at each lamination interface was high, and no phenomenon such as peeling at the lamination interface was observed in the tensile test after heat sealing between the polyethylene resin layers.
Next, using the film for cutting and wrapping packaging formed as described above, making a pillow bag, filling and packaging the cutting paddle into it, and manufacturing the cutting paddy packaging product, the machine suitability for packaging the cutting paddle individually Excellent and individual packaging was possible without any problem.
In addition, the cut and packaged product can be visually recognized from the outside, and is excellent in tearing suitability by the opening operation.
Moreover, it was able to confirm that the cutting board packaging film formed into the above film has a very high oxygen permeability and is suitable as a cutting board packaging film.
(2). On the other hand, biaxially stretched nylon 6 film with a thickness of 20 μm / printed pattern layer / laminate adhesive layer / biaxially stretched polyethylene terephthalate film with a thickness of 12 μm / deposited film of silicon oxide with a thickness of 200 mm / plasma treatment Surface / primer layer / laminate adhesive layer / 50 μm thick linear low density polyethylene film packaging material is used, and two of the packaging materials are prepared. The surface of the low-density polyethylene film is overlapped with each other, and then the outer peripheral edge is sealed in three directions to form a seal portion and a three-way seal having an opening above it. Type soft packaging bag, and then filling and packaging the cut-and-wrap packaging product individually packaged from the opening into the three-sided seal type soft packaging bag. Add oxygen scavenger as in 1 Then the opening heat - tosylate - and Le, the upper sheet - to form the pole tip, to produce a rice cake packaging products.
The soot-packed product produced above has excellent barrier properties against oxygen gas, water vapor, etc., has excellent laminating strength, etc., withstands distribution in the market, and is excellent in storage and storage.

(1). First, the following resin compositions (a), (b), and (c) were prepared.
(I). Resin composition Ethylene-1 / octene copolymer copolymerized using a single-site catalyst (metallocene catalyst) (Dow Chemical Japan Co., Ltd., trade name, AFFINITY PF1140: density = 0.898 g / cm ³ , A resin composition comprising 100 parts by weight of melt flow rate, MFR = 1.6 g / 10 min) was prepared.
(B). 50.0 parts by weight of a functional polypropylene composed of a polypropylene random copolymer (propylene-ethylene copolymer, density = 0.900 g / cm ³ , melt flow rate, MFR = 1.8 g / 10 min), The same ethylene (1) -octene copolymer (made by Dow Chemical Japan Co., Ltd., trade name, AFFINITY PF1140) as in (a), using a single site catalyst (metallocene catalyst): density = 0.898 g / cm ³ , melt flow rate, MFR = 1.6 g / 10 min) and 50.0 parts by weight were prepared.
(C). Resin composition From 100 parts by weight of functional polypropylene (propylene-ethylene copolymer, density = 0.900 g / cm ³ , melt flow rate, MFR = 1.8 g / 10 min) made of a polypropylene random copolymer A resin composition was prepared.
Next, using the resin composition prepared above, using a three-type three-layer top-blown air-cooled inflation co-extrusion film forming machine, the layer of the resin composition of (A) is 25 μm, ( The layer of the resin composition of (b) is 10 μm and the layer of the resin composition of (c) is 15 μm, respectively, to form a film with a blow ratio of 1.8. A film for cutting and wrapping packaging according to the present invention comprising an extruded inflation laminate film was produced.
When the physical properties of the above-described cutlet packaging film were measured, it showed high stiffness and rigidity.
Also, the interlayer strength at each lamination interface was high, and no phenomenon such as peeling at the lamination interface was observed in the tensile test after heat sealing between the polyethylene resin layers.
Next, using the film for cutting and wrapping packaging formed as described above, making a pillow bag, filling and packaging the cutting paddle into it, and manufacturing the cutting paddy packaging product, the machine suitability for packaging the cutting paddle individually Excellent and individual packaging was possible without any problem.
In addition, the cut and packaged product can be visually recognized from the outside, and is excellent in tearing suitability by the opening operation.
Moreover, it was able to confirm that the cutting board packaging film formed into the above film has a very high oxygen permeability and is suitable as a cutting board packaging film.
(2). On the other hand, biaxially stretched nylon 6 film having a thickness of 15 μm, vapor-deposited film of silicon oxide having a thickness of 200 mm, plasma-treated surface / primer layer / printing pattern layer / adhesive layer for laminating / straight chain having a thickness of 50 μm Use a packaging material composed of a layered structure of a low-density polyethylene film, prepare two sheets of the packaging material, and face each other with the linear low-density polyethylene film facing each other. A three-sided seal type flexible packaging bag having an opening at the top is formed by forming a seal part by three-side heat sealing the end, and then the three-sided seal type flexible packaging In the sachet, from the opening, the chopped wrapping product individually packed as described above is filled and packaged, and further, an oxygen scavenger is put in the same manner as in Example 1 above. The upper seal part was formed to manufacture the bag packaging product .
The soot-packed product produced above has excellent barrier properties against oxygen gas, water vapor, etc., has excellent laminating strength, etc., withstands distribution in the market, and is excellent in storage and storage.

(1). First, the following resin compositions (a), (b), and (c) were prepared.
(I). Resin composition Ethylene-1 / octene copolymer copolymerized using a single-site catalyst (metallocene catalyst) (Dow Chemical Japan Co., Ltd., trade name, AFFINITY PF1140: density = 0.898 g / cm ³ , A resin composition comprising 100 parts by weight of melt flow rate, MFR = 1.6 g / 10 min) was prepared.
(B). 70.0 parts by weight of a functional polypropylene composed of a polypropylene random copolymer (propylene-ethylene copolymer, density = 0.900 g / cm ³ , melt flow rate, MFR = 1.8 g / 10 min), The same ethylene-octene copolymer (made by Dow Chemical Japan Co., Ltd., trade name, AFFINITY PF1140: Density = 0.898 g / cm ³ , melt flow rate, MFR = 1.6 g / 10 min) 30.0 parts by weight were prepared.
(C). Resin composition From 100 parts by weight of functional polypropylene (propylene-ethylene copolymer, density = 0.900 g / cm ³ , melt flow rate, MFR = 1.8 g / 10 min) made of a polypropylene random copolymer A resin composition was prepared.
Next, using the resin composition prepared above, using a three-type three-layer top-blown air-cooled inflation co-extrusion film forming machine, the layer of the resin composition of (A) is 25 μm, ( The layer made of the resin composition of (b) was 10 μm and the layer of the resin composition of (c) was co-extruded to 15 μm, respectively, and further formed into a film while being stretched in the flow direction at a weak stretch ratio of 7%. A film for chopping and wrapping according to the present invention comprising a coextruded inflation laminate film having a total thickness of 50 μm and three seed layers was produced.
When the physical properties of the above-described cutlet packaging film were measured, it showed high stiffness and rigidity.
Also, the interlayer strength at each lamination interface was high, and no phenomenon such as peeling at the lamination interface was observed in the tensile test after heat sealing between the polyethylene resin layers.
Next, using the film for cutting and wrapping packaging formed as described above, making a pillow bag, filling and packaging the cutting paddle into it, and manufacturing the cutting paddy packaging product, the machine suitability for packaging the cutting paddle individually Excellent and individual packaging was possible without any problem.
In addition, the cut and packaged product can be visually recognized from the outside, and is excellent in tearing suitability by the opening operation.
Moreover, it was able to confirm that the cutting board packaging film formed into the above film has a very high oxygen permeability and is suitable as a cutting board packaging film.
(2). On the other hand, a biaxially stretched polyethylene terephthalate film having a thickness of 12 μm, a vapor-deposited film of silicon oxide having a thickness of 200 mm, a plasma-treated surface / primer layer / printing pattern layer / laminate adhesive layer / thickness 15 μm Using a packaging material composed of a biaxially stretched nylon 6 film / laminate adhesive layer / 50 μm thick linear low-density polyethylene film, prepare two sheets of the packaging material. The surface of the low-density polyethylene film is overlapped with each other, and then the outer peripheral edge is sealed in three directions to form a seal portion and a three-way seal having an opening above it. Type soft packaging bag, and then filling and packaging the cut-and-wrap packaging product individually packaged from the opening into the three-sided seal type soft packaging bag. Add oxygen scavenger as in 1 Then the opening heat - tosylate - and Le, the upper sheet - to form the pole tip, to produce a rice cake packaging products.
The soot-packed product produced above has excellent barrier properties against oxygen gas, water vapor, etc., has excellent laminating strength, etc., withstands distribution in the market, and is excellent in storage and storage.

(1). First, the following resin compositions (a), (b), and (c) were prepared.
(I). Resin composition Ethylene-1 / octene copolymer copolymerized using a single-site catalyst (metallocene catalyst) (Dow Chemical Japan Co., Ltd., trade name, AFFINITY PF1140: density = 0.898 g / cm ³ , A resin composition comprising 100 parts by weight of melt flow rate, MFR = 1.6 g / 10 min) was prepared.
(B). 50.0 parts by weight of a functional polypropylene made of a polypropylene random copolymer (propylene-ethylene copolymer, density = 0.900 g / cm ³ , melt flow rate, MFR = 1.8 g / 10 min), and polypropylene homo 20.0 parts by weight of polymer (manufactured by Sun Aroma Co., Ltd., trade name, PL400A, density = 0.900 g / cm ³ , melt flow rate, MFR = 2.0 g / 10 min), and Ethylene-1 / octene copolymer (manufactured by Dow Chemical Japan Ltd., trade name, AFFINITY PF1140: density = 0.898 g / cm ³ , melt flow copolymerized using the same single site catalyst (metallocene catalyst) -Rate, MFR = 1.6 g / 10 min) A resin composition comprising 30.0 parts by weight was prepared.
(C). Resin composition From 100 parts by weight of functional polypropylene (propylene-ethylene copolymer, density = 0.900 g / cm ³ , melt flow rate, MFR = 1.8 g / 10 min) made of a polypropylene random copolymer A resin composition was prepared.
Next, using the resin composition prepared above, using a three-type three-layer top-blown air-cooled inflation co-extrusion film forming machine, the layer of the resin composition of (A) is 25 μm, ( The layer of the resin composition of (b) is 10 μm and the layer of the resin composition of (c) is 15 μm, respectively, to form a film with a blow ratio of 1.8. A film for cutting and wrapping packaging according to the present invention comprising an extruded inflation laminate film was produced.
When the physical properties of the above-described cutlet packaging film were measured, it showed high stiffness and rigidity.
Also, the interlayer strength at each lamination interface was high, and no phenomenon such as peeling at the lamination interface was observed in the tensile test after heat sealing between the polyethylene resin layers.
Next, using the film for cutting and wrapping packaging formed as described above, making a pillow bag, filling and packaging the cutting paddle into it, and manufacturing the cutting paddy packaging product, the machine suitability for packaging the cutting paddle individually Excellent and individual packaging was possible without any problem.
In addition, the cut and packaged product can be visually recognized from the outside, and is excellent in tearing suitability by the opening operation.
Moreover, it was able to confirm that the cutting board packaging film formed into the above film has a very high oxygen permeability and is suitable as a cutting board packaging film.
(2). On the other hand, biaxially stretched nylon 6 film with a thickness of 20 μm / printed pattern layer / laminate adhesive layer / biaxially stretched polyethylene terephthalate film with a thickness of 12 μm / deposited film of silicon oxide with a thickness of 200 mm / plasma treatment Surface / primer layer / laminate adhesive layer / 50 μm thick linear low density polyethylene film packaging material is used, and two of the packaging materials are prepared. The surface of the low-density polyethylene film is overlapped facing each other, and thereafter, the end portion around the outer periphery is sealed in three directions to form a seal portion, and a three-way seal having an opening on the upper side. Type soft packaging bag, and then filling and packaging the cut-and-wrap packaging product individually packaged from the opening into the three-sided seal type soft packaging bag, and then opening the opening Heat the seal and Section to form a, to produce a rice cake packaging products.
The soot-packed product produced above has excellent barrier properties against oxygen gas, water vapor, etc., has excellent laminating strength, etc., withstands distribution in the market, and is excellent in storage and storage.

(1). First, the following resin compositions (a), (b), and (c) were prepared.
(I). Resin composition Ethylene-1 / octene copolymer copolymerized using a single-site catalyst (metallocene catalyst) (Dow Chemical Japan Co., Ltd., trade name, AFFINITY PF1140: density = 0.898 g / cm ³ , A resin composition comprising 100 parts by weight of melt flow rate, MFR = 1.6 g / 10 min) was prepared.
(B). 30.0 parts by weight of a functional polypropylene composed of a polypropylene random copolymer (propylene-ethylene copolymer, density = 0.900 g / cm ³ , melt flow rate, MFR = 1.8 g / 10 min), and polypropylene homo 20.0 parts by weight of a polymer (manufactured by Sun Aroma Co., Ltd., trade name, PL400A, density = 0.900 g / cm ³ , melt flow rate, MFR = 2.0 g / 10 min) and the above (I) Ethylene-1 / octene copolymer (manufactured by Dow Chemical Japan Ltd., trade name, AFFINITY PF1140: density = 0.898 g / cm ³ , melt flow copolymerized using the same single site catalyst (metallocene catalyst) -Rate, MFR = 1.6 g / 10 min) A resin composition comprising 50.0 parts by weight was prepared.
(C). Resin composition From 100 parts by weight of functional polypropylene (propylene-ethylene copolymer, density = 0.900 g / cm ³ , melt flow rate, MFR = 1.8 g / 10 min) made of a polypropylene random copolymer A resin composition was prepared.
Next, using the resin composition prepared above, using a three-type three-layer top-blown air-cooled inflation co-extrusion film forming machine, the layer of the resin composition of (A) is 25 μm, ( The layer of the resin composition of (b) is 10 μm and the layer of the resin composition of (c) is 15 μm, respectively, to form a film with a blow ratio of 1.8. A film for cutting and wrapping packaging according to the present invention comprising an extruded inflation laminate film was produced.
When the physical properties of the above-described cutlet packaging film were measured, it showed high stiffness and rigidity.
Also, the interlayer strength at each lamination interface was high, and no phenomenon such as peeling at the lamination interface was observed in the tensile test after heat sealing between the polyethylene resin layers.
Next, using the film for cutting and wrapping packaging formed as described above, making a pillow bag, filling and packaging the cutting paddle into it, and manufacturing the cutting paddy packaging product, the machine suitability for packaging the cutting paddle individually Excellent and individual packaging was possible without any problem.
In addition, the cut and packaged product can be visually recognized from the outside, and is excellent in tearing suitability by the opening operation.
Moreover, it was able to confirm that the cutting board packaging film formed into the above film has a very high oxygen permeability and is suitable as a cutting board packaging film.
(2). On the other hand, a biaxially stretched nylon 6 film with a thickness of 15 μm, a vapor-deposited film of silicon oxide with a thickness of 200 mm, a plasma-treated surface / primer layer / printed pattern layer / laminate adhesive layer / 50 μm thick straight chain Use a packaging material composed of a layered structure of a low-density polyethylene film, prepare two sheets of the packaging material, and face each other with the linear low-density polyethylene film facing each other. A three-sided seal type flexible packaging bag having an opening at the top is formed by forming a seal part by three-sided heat sealing the end, and then the three-sided seal type flexible packaging In the bag, the cut and wrapped product individually packaged as described above is filled and packaged from the opening, and then the opening is heat sealed and the upper seal is formed to form the bag packaging product. Manufactured.
The soot-packed product produced above has excellent barrier properties against oxygen gas, water vapor, etc., has excellent laminating strength, etc., withstands distribution in the market, and is excellent in storage and storage.

(1). First, the following resin compositions (a), (b), and (c) were prepared.
(I). Resin composition Ethylene-1 / octene copolymer copolymerized using a single-site catalyst (metallocene catalyst) (Dow Chemical Japan Co., Ltd., trade name, AFFINITY PF1140: density = 0.898 g / cm ³ , A resin composition comprising 100 parts by weight of melt flow rate, MFR = 1.6 g / 10 min) was prepared.
(B). 50.0 parts by weight of a functional polypropylene made of a polypropylene random copolymer (propylene-1 octene copolymer, density = 0.900 g / cm ³ , melt flow rate, MFR = 1.8 g / 10 min), 20.0 parts by weight of a polypropylene homopolymer (trade name, PL400A, density = 0.900 g / cm ³ , melt flow rate, MFR = 2.0 g / 10 min) manufactured by Sun Aroma Co., Ltd. ), An ethylene-1 / octene copolymer (made by Dow Chemical Japan Co., Ltd., trade name, AFFINITY PF1140: density = 0.898 g / cm ³ ) copolymerized using a single-site catalyst (metallocene catalyst) , Melt flow rate, MFR = 1.6 g / 10 min.) 30.0 parts by weight was prepared.
(C). Resin composition Functional polypropylene made of a polypropylene random copolymer (propylene-1 octene copolymer, density = 0.900 g / cm ³ , melt flow rate, MFR = 1.8 g / 10 min) 100 weight A resin composition consisting of parts was prepared.
Next, using the resin composition prepared above, using a three-type three-layer top-blown air-cooled inflation co-extrusion film forming machine, the layer of the resin composition of (A) is 25 μm, ( The layer made of the resin composition of (b) was 10 μm and the layer of the resin composition of (c) was co-extruded to 15 μm, respectively, and further formed into a film while being stretched in the flow direction at a weak stretch ratio of 7%. A film for chopping and wrapping according to the present invention comprising a coextruded inflation laminate film having a total thickness of 50 μm and three seed layers was produced.
When the physical properties of the above-described cutlet packaging film were measured, it showed high stiffness and rigidity.
Also, the interlayer strength at each lamination interface was high, and no phenomenon such as peeling at the lamination interface was observed in the tensile test after heat sealing between the polyethylene resin layers.
Next, using the film for cutting and wrapping packaging formed as described above, making a pillow bag, filling and packaging the cutting paddle into it, and manufacturing the cutting paddy packaging product, the machine suitability for packaging the cutting paddle individually Excellent and individual packaging was possible without any problem.
In addition, the cut and packaged product can be visually recognized from the outside, and is excellent in tearing suitability by the opening operation.
Moreover, it was able to confirm that the cutting board packaging film formed into the above film has a very high oxygen permeability and is suitable as a cutting board packaging film.
(2). On the other hand, a biaxially stretched polyethylene terephthalate film having a thickness of 12 μm, a vapor-deposited film of silicon oxide having a thickness of 200 mm, a plasma-treated surface / primer layer / printing pattern layer / laminating adhesive layer / thickness 15 μm Using a packaging material composed of a biaxially stretched nylon 6 film / laminate adhesive layer / 50 μm thick linear low-density polyethylene film, prepare two sheets of the packaging material. The surface of the low-density polyethylene film is overlapped with each other, and then the outer peripheral edge is sealed in three directions to form a seal portion and a three-way seal having an opening above it. Type soft packaging bag, and then filling and packaging the cut-and-wrap packaging product individually packaged in the three-way seal type soft packaging bag from the opening, and then opening the opening Heat seal the upper sheet Section to form a, to produce a rice cake packaging products.
The soot-packed product produced above has excellent barrier properties against oxygen gas, water vapor, etc., has excellent laminating strength, etc., withstands distribution in the market, and is excellent in storage and storage.

[Comparative Example 1]
A polypropylene film (biaxially stretched polypropylene film, manufactured by Toyobo Co., Ltd., trade name, Pyrene P2161, film thickness 20 μm) is used as a base layer, and a two-component curable urethane-based adhesive (main agent: polyester polyol) -Copolymerized using a single-site catalyst (metallocene catalyst) having a film thickness of 30 μm, formed from a single-layer inflation film-forming machine using a rubber, a curing agent: aliphatic isocyanate) 1. Octene copolymer (manufactured by Dow Chemical Japan Co., Ltd., trade name, AFFINITY PF1140: density = 0.898 g / cm ³ , melt flow rate, MFR = 1.6 g / 10 min) A laminate film having a thickness of 50 μm was produced.
When the physical properties of the laminate film produced above were measured, it showed high stiffness / rigidity, and was excellent in machined cutting machine filling, but the oxygen permeability was very low due to the lighting of the stretched film. It was confirmed to be unsuitable as a film.

[Experimental example]
About the laminated body film manufactured in said Examples 1-9 and the comparative example 1, each physical-property evaluation was implemented as shown below.
(1). Measurement of film thickness This was evaluated by measuring from a μ-meter manufactured by Sony Corporation.
(2). Measurement of waist / rigidity This was evaluated by measuring the waist (bending torque) of the laminated film after printing from SMT Co., Ltd., a pure bending tester, model name, JTC-911BT / pure bending tester.
(3). Measurement of tear strength This was evaluated by measuring tear strength in the flow direction (MD) from a method based on JIS-K-7128 using an Elmendorf tear tester manufactured by Tester Sangyo Co., Ltd.
(4). Measurement of total light transmittance This was evaluated by measuring the transmittance of all light from Zuka Tester Co., Ltd., haze meter, model name, SM-C.
(5). Measurement of oxygen permeability This was evaluated by measuring the oxygen permeability of a laminate film from JASCO Corporation, model name, gas palm type 100.
(6). Measurement of UV transmittance This was evaluated by measuring transmittance of UV light in the 250 nm region from Shimadzu Corporation model name, UV-2400PC, spectrophotometer.
The measurement results are shown in Table 1 below.

(Table 1)
┌───────────┬───────┬───────┬───────┐ │ │ Example 1 │ Example 2 │ Example 3 │ ├───────────┼───────┼───────┼───────┤ │ Film thickness (μm) │ 50 │ 50 │ 50 │ ├───────────┼───────┼───────┼───────┤ │ Waist / Rigidity [Nm] │4. 2 × 10 ^-6 │5.2 × 10 ^-6 │4.5 × 10 ^-6 │ ├───────────┼───────┼─────── ┼───────┤ │ Tear strength [N] │ 0.2 │ 0.2 │ 0.2 │ ├───────────┼───────┼── ──────┼───────┤ │ Total light transmittance [%] │ 93.1 │ 93.1 │ 94.2 │ ├───────────┼─ ── ───┼───────┼───────┤ │ oxygen permeability ^{│4.8 × 10 3 │4.2 × 10 3} │4.6 × 10 3 │ ├─── ────────┼───────┼───────┼───────┤ │ UV transmission rate [%] │ 79.8 │ 81.0 │ 79 .2 │ └───────────┴───────┴───────┴───────┘
┌───────────┬───────┬───────┬───────┐ │ │ Example 4 │ Example 5 │ Example 6 │ ├───────────┼───────┼───────┼───────┤ │ Film thickness (μm) │ 50 │ 50 │ 50 │ ├───────────┼───────┼───────┼───────┤ │ Waist / Rigidity [Nm] │6. 3 × 10 ^-6 │5.8 × 10 ^-6 │6.5 × 10 ^-6 │ ├───────────┼───────┼──────── ┼───────┤ │ Tear strength [N] │ 0.2 │ 0.3 │ 0.2 │ ├───────────┼───────┼── ──────┼───────┤ │ Total light transmittance [%] │ 93.4 │ 93.4 │ 95.0 │ ├───────────┼─ ── ───┼───────┼───────┤ │ oxygen permeability ^{│3.9 × 10 3 │4.0 × 10 3} │3.6 × 10 3 │ ├─── ────────┼───────┼───────┼───────┤ │ UV transmittance [%] │ 82.4 │ 82.2 │ 80 .3 │ └ ───────────┴───────┴───────┴───────┘
┌───────────┬───────┬───────┬───────┐ │ │ Example 7 │ Example 8 │ Example 9 │ ├───────────┼───────┼───────┼───────┤ │ Film thickness (μm) │ 50 │ 50 │ 50 │ ├───────────┼───────┼───────┼───────┤ │ Waist / Rigidity [Nm] │6. 4 × 10 ^-6 │6.0 × 10 ^-6 │6.5 × 10 ^-6 │ ├───────────┼───────┼──────── ┼───────┤ │ Tear strength [N] │ 0.2 │ 0.2 │ 0.2 │ ├───────────┼───────┼── ──────┼───────┤ │ Total light transmittance [%] │ 94.3 │ 94.3 │ 95.6 │ ├───────────┼─ ── ───┼───────┼───────┤ │ oxygen permeability ^{│3.7 × 10 3 │3.9 × 10 3} │3.5 × 10 3 │ ├─── ────────┼───────┼───────┼───────┤ │ UV transmission rate [%] │ 82.0 │ 82.7 │ 80 9 │ └ ───────────┴───────┴───────┴───────┘
┌───────────┬───────┐ │ │ Comparative Example 1 │ ├───────────┼───────┤ │ Membrane Thickness [μm] │ 50 │ ├───────────┼───────┤ │ Waist / Rigidity [N ・ m] │6.8 × 10 ^-6 │ ├─── ────────┼───────┤ │ Tear strength (N) │ 0.6 │ ├ ───────────┼───────┤ │ Total light transmittance [%] │ 92.1 │ ├───────────┼───────┤ │ Oxygen transmission rate │1.7 × 10 ³ │ ├──── ───────┼───────┤ │ UV transmittance [%] │ 81.6 │ └───────────┴───────┘ Above In Table 1, the unit of oxygen permeability is [cc / m ² · day · atm (23 ° C.)].

  As is clear from the results shown in Table 1 above, those according to Examples 1 to 9 according to the present invention are waist / rigidity, tear strength, total light transmittance, oxygen transmittance, and ultraviolet transmittance. It was confirmed that it was superior to that of Comparative Example 1.

  The present invention is, for example, a coextruded resin laminated film obtained by laminating two types and two layers of a polypropylene resin layer and a polyethylene resin layer, and two types and three layers of a polyethylene resin layer, a polypropylene resin layer, and a polyethylene resin layer. Or a co-extruded resin laminated film in which a polypropylene resin layer, a mixture layer of a polypropylene resin and a polyethylene resin, and a polyethylene resin layer are laminated. Since it relates to a film for packaging, more specifically, since it is formed into a film by coextrusion, for example, there is no use of a laminating adhesive composed of a solvent system, etc. It is suitable not only for the abolishment of adhesives and reduction of processing processes, but also for the environment. The film for chopping and wrapping made of a film is excellent in characteristics such as oxygen permeability, water vapor barrier property, strength, high waist, transparency, tearability, etc. is there.

It is a schematic sectional drawing which shows an example of the layer structure about the cutlery packaging film concerning this invention. It is a schematic sectional drawing which shows an example of the layer structure about the cutlery packaging film concerning this invention. It is a schematic sectional drawing which shows an example of the layer structure about the cutlery packaging film concerning this invention. It is a schematic perspective view which shows the example about the cutting bag packaging bag concerning this invention produced into a bag using the cutting bag packaging film shown in FIG. It is a schematic perspective view which shows the example about the cutting and packaging product concerning this invention manufactured by using the cutting bag packaging bag shown in FIG. 4 and filling and packaging cutting into this.

Explanation of symbols

A, A ₁ , A ₂ Cut / wrap packaging film B Cut / wrap bag C Cut / wrap product 1 Polypropylene resin layer 2 Polyethylene resin layer 3, 4, 6 Coextrusion resin laminate film 5 Polypropylene resin and polyethylene resin Mixture layer

Claims (18)

The total light transmittance (transparency) is 80% or more, the ultraviolet transmittance in the ultraviolet region with a wavelength of 250 nm is 70% or more, and the oxygen permeability is 3000 cc / m ² · day · atm. A film for cutting and wrapping packaging comprising the coextruded resin laminated film as described above. The cut light packaging film according to claim 1, wherein the total light transmittance (transparency) is 85 to 98%. The film for wrapping packaging according to any one of claims 1 to 2, wherein an ultraviolet transmittance in an ultraviolet region having a wavelength of 250 nm is 75 to 90%. Oxygen permeability, rice cake packaging film as described above in any one of claims 1 to 3, characterized in that it is a ^{3000cc / m 2 · day · atm~5000cc} / m 2 · day · atm. The co-extruded resin laminated film is made of a co-extruded resin laminated film of a polypropylene resin and a polyethylene resin, and the film for cutting and wrapping according to any one of claims 1 to 4 described above. The above-mentioned claim, wherein the co-extruded resin laminated film comprises a co-extruded resin laminated film obtained by laminating two layers of a polypropylene resin layer and a polyethylene resin layer obtained by co-extruding a polypropylene resin and a polyethylene resin. Item 6. A cutting wrapping film according to any one of items 1 to 5. The coextruded resin laminated film is composed of a coextruded resin laminated film obtained by laminating three layers of a polyethylene resin layer obtained by coextruding a polypropylene resin and a polyethylene resin, and a polypropylene resin layer and a polyethylene resin layer. The film for cutting and wrapping packaging according to any one of claims 1 to 5. The co-extruded resin laminated film comprises a polypropylene resin, a mixture of a polypropylene resin and a polyethylene resin, a polypropylene resin layer obtained by co-extruding a polyethylene resin, and a mixture layer of a polypropylene resin and a polyethylene resin. The film for wrapping packaging according to any one of claims 1 to 5, wherein the film is made of a coextruded resin laminated film obtained by laminating three layers with a polyethylene resin layer. 9. The cutlet packaging film according to any one of claims 1 to 8, wherein the polypropylene resin comprises a block copolymer, a random copolymer, or a homopolymer. The cut-off packaging according to any one of claims 1 to 9, wherein the polyethylene-based resin comprises an ethylene-α-olefin copolymer having a density of 0.880 to 0.920 g / m ^3. Film. The mixture of a polypropylene resin and a polyethylene resin is composed of a mixture of a polypropylene resin composed of a copolymer of propylene and a homopolymer of propylene and a polyethylene resin. 10. A cutting wrapping film according to any one of 10 above. The co-extruded resin laminated film is produced by an inflation co-extrusion film-forming method or a T-die co-extrusion film-forming method. . The coextruded resin laminated film is characterized by being subjected to 0.5% to 20% orientation stretching in the flow direction (MD) by an inflation coextrusion film forming method or a T-die coextrusion film forming method. The film for cutting and wrapping packaging according to any one of claims 1 to 12. The co-extruded resin laminated film is formed by a top-blown inflation co-extrusion film forming method. The film for wrapping packaging according to any one of claims 1 to 14, wherein the polypropylene resin layer has a thickness of 10 µm to 50 µm. The film for wrapping packaging according to any one of claims 1 to 15, wherein the polyethylene-based resin layer has a thickness of 10 µm to 100 µm. The cutlery packaging film according to any one of claims 1 to 16, wherein the mixture layer of the polypropylene-based resin and the polyethylene-based resin has a thickness of 5 µm to 40 µm. The mixture of a polypropylene resin and a polyethylene resin is a mixture in which a blend ratio of 90 parts by weight to 10 parts by weight of a polyethylene resin is blended with 10 parts by weight to 90 parts by weight of a polypropylene resin. The film for cutting and wrapping packaging according to any one of claims 1 to 17.

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