JP5041577B2 - Laminated film for packaging and method for producing the same - Google Patents

Description

  The present invention relates to a laminated film for packaging and a method for producing the same. In recent years, laminated films made of synthetic resin have been widely used for packaging foods such as vegetables, meat, fresh fish, and side dishes, and in particular, a film layer that comes into contact with a packaged object is molded with a polyolefin resin composition. Many laminated films are used. Such a laminated film for packaging is required to have transparency and anti-fogging properties in order to clearly show an object to be packaged, and to have slipperiness and heat sealing properties in order to adapt to automation and high speed of packaging. The present invention relates to a laminated film for packaging that meets these requirements and a method for producing the same.

  Conventionally, as a laminated film for packaging as described above, a film layer that is to be in contact with a package contains a partial ester of an aliphatic alcohol and a fatty acid mixed with a sulfonic acid compound, a polyglycerin fatty acid ester, etc. Molded with a polyolefin-based resin composition (for example, see Patent Documents 1 and 2), or molded with a polyolefin-based resin and then coated with an antifogging agent containing a glycerin monofatty acid ester on its surface (for example, Patent Documents) 3), and after molding with a polyolefin-based resin composition containing a polyglycerin fatty acid ester, a sucrose fatty acid ester is applied to the surface (for example, see Patent Document 4).

However, in these conventional laminated films for packaging, the film layer that is to be in contact with the package should satisfy antifogging properties, slipperiness and heat sealability at the same time without impairing the original transparency. There is a problem that can not be.
Japanese Patent Laying-Open No. 2005-238791 JP 2005-200628 A Japanese Patent Laid-Open No. 11-222531 JP 11-322980 A

  The problem to be solved by the present invention is a laminated film for packaging in which a film layer that is to be in contact with a package is formed of a polyolefin-based resin composition. A process for providing a laminated film for packaging having excellent anti-fogging properties, slipperiness and heat-sealability at the same time without impairing its original transparency, and a process for providing a method for producing such a laminated film for packaging. It is in.

  As a result, the present inventors have studied to solve the above-mentioned problems. As a result, the laminated film for packaging in which the film layer to be contacted with the polyolefin resin composition is used as the packaged product. The film layer that comes into contact with the surface is molded with a polyolefin resin composition containing a specific component in a specific polyolefin resin at a predetermined ratio and the surface to be packaged comes into contact with. It is correctly suitable that the component is applied so that the amount of the component becomes a predetermined amount, and such a laminated film for packaging has a surface on which a packaged object comes into contact after producing the prescribed laminated film. It has been found that it is correctly suitable to apply and manufacture a specific component in a predetermined amount.

That is, in the present invention, in the laminated film for packaging in which the film layer to be packaged is contacted is formed of a polyolefin resin composition, the film layer to be contacted by the package is an ethylene homopolymer or Molded with a polyolefin-based resin composition containing 0.1 to 0.6 % by mass of the following component A in a copolymer of ethylene and an α-olefin having 4 to 8 carbon atoms, It concerns on the laminated film for packaging characterized by consisting of what was apply | coated so that it might become 10-60 mg / m < ² > of the following B component to the surface which contacts. The present invention also provides a laminated film having a film layer formed of a polyolefin-based resin composition containing the component A as described above as a film layer to be contacted with a packaged object, and then covered the laminated film. It concerns on the manufacturing method of the laminated film for packaging characterized by apply | coating B component to the surface which a package will contact, as mentioned above.

  Component A: one or two or more selected from partial ester compounds of a glycerin condensate having a condensation degree of 2 to 10 and an aliphatic monocarboxylic acid having 12 to 18 carbon atoms

  Component B: one or two or more selected from partial ester compounds of a trivalent or tetravalent aliphatic polyhydric alcohol and an aliphatic monocarboxylic acid having 12 to 18 carbon atoms

  In the laminated film for packaging according to the present invention, the film layer to be contacted with the package is formed of a polyolefin-based resin composition containing a component A in the polyolefin-based resin, and the package is in contact with the laminated film. The B component is applied to the surface.

The polyolefin resin used in the polyolefin resin composition for forming a film layer that comes into contact with the packaged object is 1) an ethylene homopolymer, or 2) an ethylene- (1-butene) copolymer, ethylene- ( 1-hexene) copolymer such as a copolymer of ethylene and an α-olefin having 4 to 8 carbon atoms. As this copolymer, what has 2-50 mass% of units comprised from a C4-C8 alpha olefin is preferable. Copolymers of ethylene and α-olefins having 4 to 8 carbon atoms are all obtained by a gas phase method, a solution polymerization method, etc. using a known homogeneous catalyst such as a highly active Ziegler catalyst or a metallocene catalyst. More preferred are those having a density of 0.86 to 0.94 g / cm ³ and an MFR of 0.01 to 20 g / 10 min.

  The component A used in the polyolefin resin composition for forming a film layer that comes into contact with the package is a partial ester of a glycerin condensate having a condensation degree of 2 to 10 and an aliphatic monocarboxylic acid having 12 to 18 carbon atoms. One or two or more selected from compounds. Specific examples of such partial ester compounds include diglycerin = monostearate, triglycerin = monopalmitate, tetraglycerin = monopalmitate, tetraglycerin = monooleate, hexaglycerin = monolaurate, hexaglycerin = monomyristate, Decaglycerin = monolaurate.

In the laminated film for packaging according to the present invention, the film layer that is to be in contact with the package is a copolymer of the ethylene homopolymer or ethylene and an α-olefin having 4 to 8 carbon atoms as the polyolefin resin. The A component described above for the coalescence is 0 . It is formed by molding with a polyolefin resin composition containing 1 to 0.6% by mass.

  The polyolefin-based resin composition for forming a film layer that comes into contact with an object to be packaged can contain other agents for the purpose. Examples of such other agents include heat stabilizers, antioxidants, neutralizers, lubricants, weathering agents, ultraviolet absorbers, and antiblocking agents, but the content of these other agents is as small as possible. Is preferable.

  The polyolefin-based resin composition itself for forming a film layer to be contacted with the object to be packaged can be prepared by a known method. For example, 1) Component A and polyolefin resin are mixed in a mixer such as a tumbler blender or Henschel mixer, and the mixture is melt kneaded by an extruder such as a single screw extruder or a multi-screw extruder. Then, granulation is performed to prepare a master pellet containing the component A at a high concentration, and the master pellet is further mixed with a polyolefin resin to obtain a predetermined polyolefin resin composition. 2) Polyolefin The resin and component A are put into a mixer such as a tumbler blender or Henschel mixer, mixed, granulated while melt kneaded with a kneader, single screw extruder, multi-screw extruder, etc., and a predetermined polyolefin resin composition The method etc. which are made into a thing are mentioned.

  In the laminated film for packaging according to the present invention, the above-described package layer to be packaged is a film layer that is to be contacted, and the film layer itself before applying the component B can be formed by a known method. As the method, an air-cooled inflation molding method, an air-cooled two-stage inflation molding method, an inflation molding method such as a water-cooled inflation molding method, a straight manifold type T die, a coat / hanger type T die, or a T die that combines these is used. The conventional T-die molding method is used. Examples of the method for laminating the film layer thus formed include a dry laminating method, a sand laminating method, an extrusion laminating method, a coextrusion method and the like, and among them, the dry laminating method and the coextrusion method are preferable. In these lamination methods, a polyurethane adhesive, an organic titanium anchor coating agent, an isocyanate anchor coating agent, an adhesive resin, or the like can be used if necessary, and among them, a polyurethane adhesive is preferable. When it is set as the laminated | multilayer film for packaging based on this invention, what was shape | molded as mentioned above can also be extended | stretched further. Examples of the stretching method include a sequential biaxial stretching method, a simultaneous biaxial stretching method, and a tubular biaxial stretching method.

  As described above, the laminated film for packaging according to the present invention comprises an ethylene homopolymer as a polyolefin resin or a copolymer of ethylene and an α-olefin having 4 to 8 carbon atoms. The polymer is molded from a polyolefin resin composition containing component A, and the component B is applied to the surface to be in contact with the package.

  The component B applied to the surface to be contacted with the package is one selected from a partial ester compound of a trivalent or tetravalent aliphatic polyhydric alcohol and an aliphatic monocarboxylic acid having 12 to 18 carbon atoms. Or two or more.

  In a partial ester compound of a trivalent or tetravalent aliphatic polyhydric alcohol as a component B and an aliphatic monocarboxylic acid having 12 to 18 carbon atoms, a trivalent or tetravalent aliphatic polyvalent compound used as a raw material of the partial ester compound Examples of the monohydric alcohol include glycerin, trimethylolpropane, pentaerythritol, glucose, sorbitan, diglycerin, and ethylene glycol diglyceryl ether. Other aliphatic monocarboxylic acids having 12 to 18 carbon atoms that are other raw materials for the partial ester compound include dodecanoic acid, tetradecanoic acid, octadecanoic acid, tetradecenoic acid, octadecenoic acid, isooctadecanoic acid, 12-hydroxyoctadecanoic acid, and the like. Can be mentioned. The partial ester compound as the component B is obtained from an appropriate combination of the trivalent or tetravalent aliphatic polyhydric alcohol and the aliphatic monocarboxylic acid having 12 to 18 carbon atoms described above. In which a partial ester compound obtained from glycerin or diglycerin and an aliphatic monocarboxylic acid having 12 to 18 carbon atoms is preferred, and such a partial ester is preferred. Examples of the compound include glycerol = monooleate, diglycerol = monolaurate, diglycerol = monostearate, diglycerol = monooleate and the like.

In the laminated film for packaging according to the present invention, the application amount of the component B described above applied to the surface to be packaged contacts is 10 per side of the surface to be packaged contacted. It shall be the ~60mg / ^{m 2.}

  In the laminated film for packaging according to the present invention, a known method can be used as a method for applying the component B described above to the surface with which the article to be packaged comes into contact. This includes, for example, a spray coating method, a gravure coating method, an air knife coating method, a bar coating method, a kiss coating method, a flow coating method, and a dip coating method, each using a coating solution prepared by dissolving the B component in a solvent. Among them, the gravure coating method is preferable. Examples of the solvent for dissolving the B component include water, lower alcohols such as ethyl alcohol and isopropyl alcohol, and toluene or ethyl acetate alone or in combination. Among them, lower alcohols are preferable. In the coating solution prepared by dissolving the B component in the solvent, the effective concentration of the B component is preferably 0.1 to 2% by mass.

  The B component applied to the surface to be in contact with the packaged object can contain other agents for the purpose. Examples of such other agents include heat stabilizers, antioxidants, neutralizers, lubricants, weathering agents, ultraviolet absorbers, and antiblocking agents, but the content of these other agents is as small as possible. Is preferable.

  The manufacturing method of the laminated film for packaging according to the present invention is a method for producing the laminated film for packaging according to the present invention as described above. In the manufacturing method of the laminated film for packaging according to the present invention, the polyolefin resin composition containing the component A is used for the film layer to be packaged to come into contact in order to efficiently form the film layer and produce the laminated film. After forming a laminated film using the molded film layer, that is, a laminate having a film layer molded with a polyolefin-based resin composition containing component A as the film layer with which the packaged object comes into contact After producing a film, it manufactures by apply | coating B component to the surface which the to-be packaged object of this laminated film will contact.

  The application of the A-component, the polyolefin-based resin composition containing the A-component, the B-component and the B-component is as described above. In addition, the film layer forming method using the polyolefin resin composition containing the component A is in contact with the film layer forming method and the film forming method using the film layer as described above. The film layer that comes into contact with the object is preferably formed by inflation molding or T-die molding, and the laminated film is preferably prepared by dry lamination or coextrusion.

  According to the present invention described above, the film layer that is to be contacted by the packaged laminated film has excellent antifogging properties, slipperiness, and heat sealability without impairing its original transparency. There is an effect of having at the same time.

  Hereinafter, in order to make the configuration and effects of the present invention more specific, examples and the like will be described. However, the present invention is not limited to these examples. In the following Examples and Comparative Examples, “part” means “part by mass” and “%” means “% by mass”.

Test category 1 (Manufacture of laminated film for packaging)
Example 1
Ethylene- (1-butene) copolymer (ethylene copolymerization ratio 95%, density 0.920 g / cm ³ , MFR 2.1 g / 10 min) (E-1) 90 parts and decaglycerin = monolaurate (A-1) 10 parts were put into a tumbler blender and mixed, and then melt kneaded with a twin screw extruder to obtain a master pellet. 1.5 parts of this master pellet and 98.5 parts of the above-mentioned ethylene- (1-butene) copolymer (E-1) are mixed in a tumbler blender for the film layer that comes into contact with the package. A polyolefin resin composition was obtained. The polyolefin-based resin composition has an outer film layer that comes into contact with an object to be packaged, and the ethylene- (1-butene) copolymer (E-1) has an intermediate film layer and the other film layer. Molded while cooling to 30 ° C. by the T-die method so as to be an outer film layer, and a three-layer coextruded film having a thickness of 60 μm One outer film layer / intermediate film layer / the other outer film layer = 1/4/1). Subsequently, 0.4 parts of glycerin monooleate is dissolved in 99.6 parts of isopropyl alcohol, and a solution having a solid content concentration of 0.4% is brought into contact with the package of the three-layer coextruded film described above. After being coated on the surface to be 10 g / m ² per side (40 mg / m ^{2 in} terms of solid content) by a gravure coating method, it was dried at 70 ° C. to obtain a laminated film for packaging.

Examples or Reference Examples 2 to 16 and Comparative Examples 1 to 8
In the same manner as in Example 1, the laminated films for packaging of Examples or Reference Examples 2 to 16 and Comparative Examples 1 to 8 were produced. Table 1 summarizes the contents of the laminated film for packaging of each example produced as described above, including Example 1.

In Table 1,
* 1: One outer film layer that is to be contacted with a packaged object molded with a polyolefin resin composition containing component A so as to have the content (%) in Table 1 * 2: Intermediate Film layer * 3: The other outer film layer A-1: Decaglycerol = monolaurate A-2: Hexaglycerol = monomyristate A-3: Diglycerol = monostearate A-4: Triglycerol = monopalmitate A -5: tetraglycerin = monooleate A-6: mixture of diglycerin = monostearate / tetraglycerin = monooleate = 50/50 (mass ratio) A-7: diglycerin = monostearate / hexaglycerin = Mixture of monolaurate = 50/50 (mass ratio) A-8: Glycerin = monostearate A-9: Sorbitan = monoste Lato A-10: Sodium dodecyl sulfonate A-11: Sodium octadecyl sulfonate A-12: Diglycerin = monostearate / sodium tetradecyl sulfonate / sodium hexadecyl sulfonate = 50/25/25 (mass ratio) Mixture A-13: Glycerin = monobehenate A-14: Decaglycerin = monocaprylate A-15: Sodium dodecylbenzenesulfonate A-16: 1,2-bis (octyloxycarbonyl) -1-ethanesulfonate sodium a -1: dodecyl diethanolamine a-2: stearyl diethanolamide a-3: ester compound of stearyl diethanolamine and stearic acid (monoester content 70%)

B-1: Glycerin = monooleate B-2: Diglycerol = monolaurate B-3: Diglycerol = monostearate B-4: Diglycerol = monooleate B-5: Glycerin = monooleate / diglycerol = Mixture of monolaurate = 50/50 (mass ratio) B-6: Mixture of glycerin = monooleate / diglycerin = monostearate = 50/50 (mass ratio) B-7: Glycerin = monooleate / diglycerin = Mixture of monooleate = 50/50 (mass ratio) B-8: sorbitan = monolaurate B-9: sorbitan = monooleate B-10: glycerin = monooleate / sorbitan = monolaurate = 50/50 (mass ratio) B-11: Diglycerin = monolaurate / sorbitan = monooleate = Mixture of 0/50 (mass ratio) B-12: Mixture of diglycerin = monostearate / sorbitan = monooleate = 50/50 (mass ratio) B-13: Diglycerin = monocaprylate B-14: Dodecyl Diethanolamine B-15: Stearyl diethanolamide B-16: Ester compound of stearyl diethanolamine and stearic acid (monoester content 70%)
b-1: hexaglycerin = monolaurate b-2: sucrose laurate b-3: 10 moles of adenyl oxide adduct of dodecyl alcohol

E-1: Ethylene- (1-butene) copolymer (ethylene copolymerization ratio 95%, density 0.920 g / cm ³ , MFR 2.1 g / 10 min)
E-2: ethylene- (1-hexene) copolymer (ethylene copolymer ratio 96%, density 0.926 g / cm ³ , MFR 1.0 g / 10 min)
E-3: Ethylene- (1-octene) copolymer (ethylene copolymerization ratio 96%, density 0.931 g / cm ³ , MFR 2.8 g / 10 min)
E-4: Polyethylene (density 0.927 g / cm ³ , MFR 4.0 g / 10 min)
E-5: Ethylene-vinyl acetate copolymer (ethylene copolymer ratio 82%, density 0.93 g / cm ³ , MFR 1.5 g / 10 min)
E-6: Ethylene-propylene copolymer (ethylene copolymerization ratio 4%, density 0.90 g / cm ³ , MFR 8.0 g / 10 min)
E-7: Polypropylene (density 0.90 g / cm ³ , MFR 2.4 g / 10 min)

Test category 2 (evaluation of laminated film for packaging)
The laminated film for packaging produced in Test Category 1 was evaluated for antifogging property, lubricity, heat sealability and transparency by the following methods. About anti-fogging property, lubricity, and heat-sealability, the film layer side which a packaged product will contact was made into the measurement surface. The results are summarized in Table 2.

・ Anti-fogging After the laminated film for packaging manufactured in Test Category 1 is conditioned for 24 hours at 20 ° C. under a relative humidity of 65%, the measurement surface is placed inside the beaker containing 20 ° C. water. After covering for 1 hour in an atmosphere of 5 ° C., the degree of water droplet adhesion to the measurement surface was observed and evaluated according to the following criteria. As the daily measurement, the same evaluation was performed on a sample stored for 4 weeks under the condition of 40 ° C. and 50% relative humidity.
Evaluation criteria ◎: Transparent with no water droplets, excellent antifogging properties ○: Large water droplets, but transparent, good antifogging properties △: Water droplets, slightly opaque, inferior antifogging properties Yes: There are small water droplets, it is opaque, the antifogging property is remarkably inferior, and it is not practical

・ Smoothness The laminated film for packaging produced in Test Category 1 was conditioned at 20 ° C. under a relative humidity of 65% for 24 hours, and then was subjected to JIS-K7125 using a friction measuring instrument TR type manufactured by Toyo Seiki Seisakusho. The dynamic friction coefficient of the measurement surface was measured according to the above, and the measured value was evaluated according to the following criteria. As the daily measurement, the same evaluation was performed on a sample stored for 4 weeks under the condition of 40 ° C. and 50% relative humidity.
Evaluation criteria A: Less than 0.25 (excellent smoothness)
○: 0.25 or more and less than 0.35 (smoothness is good)
Δ: 0.35 or more and less than 0.45 (smoothness is inferior)
X: 0.45 or more (smoothness is extremely inferior and not practical)

・ Seal packaging machine after adjusting the laminated film for packaging manufactured in Test Category 1 at 20 ° C. under the condition of 65% relative humidity for 24 hours and then stacking two sheets so that the measurement surfaces face each other Using an impulse type rice sealer manufactured by the company, heat sealing was performed with a setting of 2.9. Cut into a strip shape to include a seal part of 15 mm in width and 4 mm in length, and using Autograph AG-A manufactured by Shimadzu Corporation, T-peeling was performed, and the force required for peeling of the heat seal part was measured. The measured values were evaluated according to the following criteria. As the daily measurement, the same evaluation was performed on a sample stored for 4 weeks under the condition of 40 ° C. and 50% relative humidity.
Evaluation criteria A: 8 N / 15 mm or more (excellent heat sealability)
○: 5N / 15mm or more and less than 8N / 15mm (good heat sealability)
Δ: 3N / 15mm or more and less than 5N / 15mm (heat sealability is inferior)
X: Less than 3 N / 15 mm (heat sealability is extremely inferior and impractical)

Transparency The laminated film produced in Test Category 1 was conditioned at 20 ° C. under a relative humidity of 65% for 24 hours, then measured for haze and evaluated according to the following criteria. As the daily measurement, the same evaluation was performed for a sample stored for 4 weeks under the condition of 40 ° C. and 50% relative humidity.
Evaluation criteria A: Less than 5% (excellent transparency)
○: 5% or more and less than 10% (transparency is good)
Δ: 10% or more and less than 15% (transparency is inferior)
X: 15% or more (transparency is remarkably inferior)

Test category 3 (Manufacture of laminated film for packaging)
Example 17
90 parts of the same ethylene- (1-butene) copolymer (E-1) and 10 parts of decaglycerin monolaurate (A-1) as in Example 1 of Test Category 1 were put into a tumbler blender and mixed. Furthermore, it melt-kneaded with the twin-screw extruder, and obtained the master pellet. 1.5 parts of this master pellet and 98.5 parts of the above-mentioned ethylene- (1-butene) copolymer (E-1) are mixed in a tumbler blender for the film layer that comes into contact with the package. A polyolefin resin composition was obtained. The polyolefin-based resin composition has an outer film layer that comes into contact with an object to be packaged, and the ethylene- (1-butene) copolymer (E-1) has an intermediate film layer and the other film layer. Molded while cooling to 30 ° C. by the T-die method so as to be an outer film layer, and a three-layer coextruded film having a thickness of 60 μm One outer film layer / intermediate film layer / the other outer film layer = 1/4/1). Base film (biaxially stretched polyamide film, thickness 15 μm) (P-1) and polyurethane adhesive (trade name Takelac A-615 / Takenate A-65 manufactured by Takeda Pharmaceutical Co., Ltd. = 16/1 (mass ratio) After the coating amount was 3 g / m ² (in terms of solid content) and dried, this coating 3 was placed across the coated surface. The other layer of the layer coextruded film was laminated with a nip roll and allowed to stand at 50 ° C. for 24 hours to cure the polyurethane adhesive. Subsequently, 0.4 parts of glycerin monooleate was dissolved in 99.6 parts of isopropyl alcohol, and a solution with a solid content concentration of 0.4% was contacted with the surface to be packaged (both the three layers described above). The surface of the extruded film to be packaged is applied to the surface by gravure coating so as to be 10 g / m ² per side (40 mg / m ^{2 in} terms of solid content), and then dried at 70 ° C. for packaging. A laminated film was obtained.

Examples or Reference Examples 18 to 32 and Comparative Examples 9 to 16
In the same manner as in Example 17, the laminated films for packaging of Examples or Reference Examples 18 to 32 and Comparative Examples 9 to 16 were produced. Table 3 summarizes the contents of the laminated film for packaging of each example produced above including Example 17.

In Table 3,
P-1: Biaxially stretched polyamide film (thickness 15 μm)
P-2: Polyethylene terephthalate biaxially stretched film (thickness 12 μm)
P-3: Polypropylene biaxially stretched film (thickness 20 μm, double-sided corona discharge treatment 38 μN / cm)
* 1 to * 3, A-1 to A-16, B-1 to B-16 and E-1 to E-7: Same as Table 1

Test category 4 (evaluation of laminated film for packaging)
About the laminated | multilayer film for packaging manufactured by the test category 3, similarly to the test category 2, anti-fogging property, lubricity, heat-sealability, and transparency were evaluated. About anti-fogging property, lubricity, and heat-sealability, the film layer side which a packaged product will contact was made into the measurement surface. The results are summarized in Table 4.

Test category 5 (Manufacture of laminated film for packaging)
Example 33
90 parts of the same ethylene- (1-butene) copolymer (E-1) and 10 parts of decaglycerin monolaurate (A-1) as in Example 1 of Test Category 1 were put into a tumbler blender and mixed. Furthermore, it melt-kneaded with the twin-screw extruder, and obtained the master pellet. Inflation in which 1.5 parts of the master pellets and 98.5 parts of the ethylene- (1-butene) copolymer (E-1) are mixed with a tumbler blender and a die having a diameter of 75 mm and a lip gap of 0.5 mm is attached. Using a molding machine (TKN-40 manufactured by Chubu Chemical Machinery Co., Ltd.), inflation molding was performed under the conditions of a resin extrusion temperature of 200 ° C. and BUR = 1.8 to obtain a single-layer film having a thickness of 40 μm. Mixture of polyurethane adhesive (trade name Takelac A-615 / Takenate A-65 = 16/1 (mass ratio) manufactured by Takeda Pharmaceutical Company Limited) on the same base film (P-1) as Example 17 in Test Category 3 Is prepared with ethyl acetate to a solid content concentration of 20%) and coated so that the coating amount is 3 g / m ² (in terms of solid content), dried, and sandwiched between the coated surfaces, the monolayer film. And a nip roll, and allowed to stand at 50 ° C. for 24 hours to cure the polyurethane adhesive. Subsequently, 0.4 parts of glycerin monooleate is dissolved in 99.6 parts of isopropyl alcohol, and the surface to be packaged comes into contact with a solution having a solid content concentration of 0.4% (the above-described single-layer film) The surface of the package to be contacted) is coated with gravure coating method so that it becomes 10 g / m ² per side (40 mg / m ^{2 in} terms of solid content), then dried at 70 ° C. and laminated film for packaging Got.

Examples or reference examples 34 to 48 and comparative examples 17 to 24
In the same manner as in Example 33, the laminated films for packaging of Examples or Reference Examples 34 to 48 and Comparative Examples 17 to 24 were produced. The contents of the laminated film for packaging of each example produced above including Example 33 are shown together in Table 5.

In Table 5,
A-1 to A-16, B-1 to B-16 and E-1 to E-7: same as Table 1 P-1 to P-3: same as Table 3

Test category 6 (evaluation of laminated film for packaging)
About the laminated | multilayer film for packaging manufactured by the test category 5, similarly to the test category 2, anti-fogging property, lubricity, heat-sealability, and transparency were evaluated. About anti-fogging property, lubricity, and heat-sealability, the film layer side which a packaged product will contact was made into the measurement surface. The results are summarized in Table 6.

Claims (5)

In the laminated film for packaging in which the film layer to be packaged is made of a polyolefin resin composition, the film layer to be packaged is made of ethylene homopolymer or ethylene and 4 carbon atoms. Molded with a polyolefin-based resin composition containing 0.1 to 0.6 % by mass of the following component A in a copolymer with 8 to α-olefin, and the packaged product comes into contact with the copolymer. A laminated film for packaging, comprising a surface coated with the following component B so as to be 10 to 60 mg / m ² .
Component A: One or more selected from partial ester compounds of a glycerin condensate having a condensation degree of 2 to 10 and an aliphatic monocarboxylic acid having 12 to 18 carbon atoms. Component B: trivalent or tetravalent aliphatic poly One or two or more selected from partial ester compounds of a monohydric alcohol and an aliphatic monocarboxylic acid having 12 to 18 carbon atoms One or more than packaging laminate film of claim 1 Symbol placement is B component is selected from the partial ester compound of glycerin or diglycerin and aliphatic monocarboxylic acids having 12 to 18 carbon atoms. A method for producing a laminated film for packaging according to claim 1 or 2, wherein the laminated film has a film layer formed of a polyolefin-based resin composition containing an A component as a film layer with which an article to be packaged comes into contact. After manufacturing this, the B component is applied to the surface of the laminated film to be packaged that comes into contact. The manufacturing method of the laminated | multilayer film for packaging of Claim 3 which shape | molds the film layer which a to-be-packaged product contacts with an inflation molding method or a T-die molding method. The method for producing a laminated film for packaging according to claim 3 or 4, wherein the laminated film is produced by a dry lamination method or a coextrusion method.