KR101966510B1 - A wrapping paper and its manufacturing method - Google Patents

Abstract

Disclosed are a wrapping paper made of a laminated sheet and a method of manufacturing the same. In the wrapping paper consisting of laminated sheets for packaging seeds, fruits, cosmetic solutions, mask packs, the first layer (100) containing polyethylene phthalate (PET), the second layer (200) containing polyethylene (PE), Third layer 300 including at least one selected from a rust paper, Hanji, kraft paper, white paper or leaf paper, a fourth layer 400 including polyethylene (PE), aluminum (AL), aluminum (AL) A fifth layer 500 including at least one selected from a laminated film, an EVOH film containing a coloring pigment, or a silica film, and a sixth layer including at least one selected from LLDPE, LDPE, PP, HDPE, or CPP ( 600 is sequentially stacked, and is characterized in that the lamination method is bonded by laminating the first layer (100) to the sixth layer (600).
Therefore, when using a wrapping paper made of a laminated sheet according to the present invention as described above can be opened easily by hand containing oil or moisture by providing a paper texture to the user, the appearance is beautiful and the effect of improving the aesthetics have.

Description

Packing paper made of laminated sheet and its manufacturing method {A wrapping paper and its manufacturing method}

The present invention relates to a wrapping paper, and more particularly, to a wrapping paper and a method for manufacturing the laminated sheet for packaging seeds, fruits, cosmetic solutions, mask packs and the like.

In general, in order to package seeds, fruits, cosmetic solutions, mask packs, etc., several packaging materials with properties are combined to compensate for the defects of each material, and aluminum on one side of a transparent plastic film made of a material having new packaging performance. Films containing thin films are widely used for packaging.

The aluminum wrapper blocks moisture from being exposed to the inside of the wrapper, and the metal's unique color and texture give it a luxurious and clean effect.

However, in the case of the wrapping paper as described above, there is a disadvantage that the wrapping paper may be cracked after wrapping.

In addition, in order to prevent the user from slipping in order to open the hand directly without using a tool such as scissors, there should be no oil or moisture in the hand and a considerable grip force is required.

Looking at the conventional technology to supplement the above problems, Patent No. 10-1496393 "Packaging film, packaging material and packaging bags using the same", improved flexibility, high elasticity, even in the low-cost outer film other than nylon Disclosed is a packaging material showing impact and vacuum formation and a packaging bag using the same.

However, the packaging bag as described above, when the user needs to open the packaging bag by hand, there is a hassle to open the oil in the absence of oil or water in the hand so as not to slip the hand.

Looking at another conventional technology to supplement the above problems, Patent No. 10-1680871 "waterproof laminated sheet having a paper texture", having a paper texture layer having a paper texture and the paper texture layer with a visual Disclosed is a laminated sheet provided to be tactilely confirmed.

When using the laminated sheet as described above, by using aluminum as the light shielding layer, there is a problem in that the cracks of the wrapping paper after packaging is inferior in gas barrier properties.

Registered Patent No. 10-1496393 "Packaging film, packaging material and packaging bag using the same" Korean Patent No. 10-1680871 "Waterproof laminated sheet having paper texture"

An object of the present invention for solving the above problems is, by providing a wrapping paper laminated with paper and aluminum between the synthetic resin film, to provide a paper texture to the user, easy to open by oil or water-containing hands, The present invention provides a wrapping paper made of a laminated sheet that is easily shielded from light and prevents oxidation, and a method of manufacturing the same.

Another object of the present invention for solving the above problems is to provide a wrapping paper and a method of manufacturing the laminated sheet which can be provided with a beautiful effect on the color and appearance, and can maintain the gas barrier properties after packaging.

Another object of the present invention for solving the above problems, AL, AL-laminated film, EVOH film or silica film including a coloring pigment is provided by a wrapping paper made of a laminated sheet made of environmentally friendly materials that can be recycled And to provide a method for producing the same.

Another object of the present invention for solving the above problems is, by using a lamination method for laminating each layer of the wrapping paper made of the laminated sheet, it is possible to adhere to a variety of films, the production of a high-functional composite film It is to provide a wrapping paper and a manufacturing method thereof made of a laminated sheet that can be enabled.

In the wrapping paper consisting of laminated sheets for packaging seeds, fruits, cosmetic solutions, mask packs, the first layer (100) containing polyethylene phthalate (PET), the second layer (200) containing polyethylene (PE), Third layer 300 including at least one selected from a rust paper, Hanji, kraft paper, white paper or leaf paper, a fourth layer 400 including polyethylene (PE), aluminum (AL), aluminum (AL) A fifth layer 500 including at least one selected from a laminated film, an EVOH film containing a coloring pigment, or a silica film, and a sixth layer including at least one selected from LLDPE, LDPE, PP, HDPE, or CPP ( 600 is sequentially stacked, and is laminated by at least one selected from a lamination method for laminating the first layer 100 to the sixth layer 600.

In addition, the AL-laminated film is a laminate of an EVOH film, a silica film, an organic vapor deposition film or an inorganic vapor deposition film on one surface of the AL film, the thickness of the laminated film used for the Al-laminated film, the sum of the total layer. It is provided in a ratio of 1: 0.01 to 0.04, and the adhesive is a polyurethane adhesive, a two-component polyurethane adhesive, a solvent-free polyurethane adhesive, a homo polymer, a polyacrylic acid ester adhesive, a cyatoacrylate adhesive, ethylene Copolymer Adhesive, Cellulose Adhesive, Polyester Adhesive, Polyamide Adhesive, Amino Resin Adhesive, Phenolic Resin Adhesive, Epoxy Adhesive, Reactive Acrylic Adhesive, Reactive Metaacrylic Adhesive, Rubber Adhesive, Silicone Adhesive, Inorganic Adhesive The laminator using at least one adhesive selected from the group consisting of adhesives The Sean method may be bonded by dry lamination, wet lamination, extrusion lamination, or hot melt lamination.

The manufacturing method of the wrapping paper made of the laminated sheet, in the packaging laminated sheet for packaging seeds, fruits, cosmetic solutions, mask pack, gravure printing ink, PET to be used in the first layer 100, the second layer 200 PE to be used for, at least one selected from the rust paper, Hanji, kraft paper, white paper or leaf paper to be used in the third layer 300, PE to be used in the fourth layer 400, AL to be used in the fifth layer 500, At least one selected from AL-laminated film, EVOH film or silica film including coloring pigment, at least one selected from LLDPE, LDPE, PP, HDPE, or CPP to be used in the sixth layer 600 and a material preparation for preparing an adhesive Step S100, a printing step of performing gravure printing on the other side of the first layer 100, S200, and the first layer 200 and the second layer 200 which have passed through the printing step S200. Bonding process step of bonding the sixth layer 600 to the lamination method (S300), the bonding Producing wrapping paper for cutting or processing the film that has undergone the process step (S300) according to the specification or shape to suit the post-processing work (S400) and the film that has undergone the cutting step (S400) to meet the purpose It characterized in that it comprises a step (S500).

Further, the AL-laminated film is a laminate of at least one selected from EVOH film, silica film, organic material deposition film or inorganic material deposition film on one side of the AL, the thickness of the laminated film used for the Al- lamination film, the whole It is provided in the ratio of 1: 0.01-0.04 with respect to the sum of layers, The said adhesive agent is a polyurethane adhesive, a two-component polyurethane adhesive, a solvent-free polyurethane adhesive, a homopolymer, a polyacrylic acid ester adhesive, and a cyatoacrylate Adhesives, ethylene copolymer adhesives, cellulose adhesives, polyester adhesives, polyamide adhesives, amino resin adhesives, phenol resin adhesives, epoxy adhesives, reactive acrylic adhesives, reactive metaacryl adhesives, rubber adhesives, At least one adhesive selected from the group consisting of silicone adhesives and inorganic adhesives The use, and the lamination process is a dry lamination, wet (Wet) lamination, characterized in that the adhesion by the at least one selected from extrusion lamination or hot melt lamination method.

When using a wrapping paper made of a laminated sheet according to the present invention as described above can be easily opened by hand containing oil or moisture by providing a paper texture to the user, the appearance is beautiful and has an effect of improving the aesthetics.

In addition, it is equipped with AL-laminated film, EVOH film containing colored pigment, silica film, organic material deposition film or inorganic material deposition film, etc., which is equipped with eco-friendly materials that can be recycled, and is easily recycled. Due to this, there is an advantage that the leakage rate due to the cracking phenomenon of Al is reduced.

1 is a cross-sectional view of a wrapping paper made of a laminated sheet according to the present invention.
2 is a process chart of a wrapping paper and a method for manufacturing the same according to the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view of a wrapping paper made of a laminated sheet according to the present invention.

The present invention is a wrapping paper consisting of laminated sheets for packaging seeds, fruits, cosmetic solutions, mask pack, the first layer 100 containing polyethylene phthalate (PET), the second layer containing polyethylene (PE) ( 200), a third layer 300 including a rust paper, a Korean paper, a kraft paper, a white paper or a leaf paper, a fourth layer 400 including a polyethylene (PE), aluminum (AL), and aluminum (AL) -laminated film , The fifth layer 500 including the EVOH film or the silica film including the pigmented pigment and the sixth layer 600 including the LLDPE, LDPE, PP, HDPE or CPP are sequentially stacked, the first In order to laminate the layers 100 to sixth layer 600, it is characterized by being bonded by a lamination method.

In more detail, in the laminated sheet for packaging for packaging seeds, fruits, cosmetic solutions, mask packs, etc., the first layer 100 serving as a base includes polyethylene phthalate (PET), oriented polypropylene (OPP), and ONY ( Oriented nylon), NY (Nylon) may be made of at least one.

However, preferably, it is preferable to use a PET film.

The PET film maintains high tensile strength even at a thin thickness, has excellent thermal stability and dimensional stability, has excellent chemical resistance over various temperature ranges, has the highest tensile strength among plastics, has high rigidity, high heat resistance, Melting point and softening point are among the best in plastic film, and have wide usable temperature range of 60 ~ 150 ℃, and there is no change in appearance even under the condition of softening and shrinking by heating. have.

In addition, by using a lamination method together with a packaging material such as paper or AL, there is an easy advantage to configure a wrapping paper (hereinafter referred to as a wrapping paper) made of the laminated sheet of the present invention.

In particular, the PET is provided on the outermost layer of the wrapping paper may be a printing operation on the first layer (100).

The printing operation may be performed by gravure printing, offset printing, etc. Preferably, since the ink having a uniform thickness uniformly determined in advance is attached to the pattern as it is, it is easy to uniformly fill the ink even in a complicated shape, and thus uniform printing thickness In order to obtain a printing method, a concave wire part is formed on a plate or a roller to fill ink in the wire part, and scrape off unnecessary ink on the protruding part of the outer peripheral surface with a metal mechanism called a scratch, Gravure printing can be performed in such a way as to apply pressure to the ink of the portion to transfer the to-be-printed object.

In the case of the first layer 100, it is preferable to have a thickness ratio of 1: 0.05 to 0.12 with respect to the sum of all the layers of the wrapping paper.

If the thickness of the first layer is provided with a thickness ratio of less than 1: 0.05 with respect to the sum of all layers of the wrapping paper, the thickness of the first layer may be too thin as a support of the wrapping paper, resulting in problems in printing or inferior heat resistance. .

In addition, when the thickness ratio is provided in 1: 0.12 or more, there is a disadvantage that the first layer 100 is provided too thick to take a long time to dry.

Next, a second layer 200 provided on one surface of the first layer 100 and including at least one of polyethylene (PE) and polypropylene (PP) may be provided.

However, preferably it has a cold resistance that can withstand up to -20 ℃, there is little water absorption, PE can be provided with a high waterproof, high electrical insulation, excellent chemical resistance, oil resistance and the like.

In the case of the second layer 200, it is preferable to have a thickness ratio of 1: 0.10 to 0.18 with respect to the total layer sum of the wrapping paper.

If the thickness ratio of the PE is less than 1: 0.10 with respect to the total of the total layers, the waterproofing of the finally made wrapping paper is not easily performed, and thus the value of the wrapping paper may be degraded.

If the thickness ratio is provided in 1: 0.18 or more, there is a disadvantage that the adhesion is not easily made.

Next, it is provided on one surface of the second layer 200, and gives a texture and texture to the outer side of the wrapping paper, the wrapping paper is not easily broken or torn by the influence of external force, the cutting in the grain direction When performed, the third layer 300 including papers may be provided so that the cutting property is excellent so that it can be easily opened by hand containing oil or moisture.

In more detail, the third layer 300 may be provided with papers such as presser paper, Hanji paper, kraft paper, white paper, thin paper, and the like, but is not limited thereto.

However, preferably, the presser paper or kraft paper may be selectively provided.

The roe deer is a Japanese-language representation of a rolled paper, and is a kind of relatively thin wrapping paper made by applying gloss on one side. Chemical pulp and kraft pulp are used as raw materials. Pure white rolls using bleached kraft as main raw materials, S rolls using unbleached or semi-bleached chemical pulp as main raw materials, G rolls containing crushed pulp as the main raw material, more than 30% of chemical pulp, lined kraft, polarized light kraft, etc. There are kinds, but is not limited to this can be used, of course.

The roe deer is used as a small area, envelopes, and simple wrapping paper, and is also used for lower shear advertisements.

Moreover, the kraft paper is a packaging paper mainly composed of unbleached kraft, which is a kind of chemical pulp, and is mostly processed into a zone and used for packaging flour, sugar, fertilizer, feed, grain, and the like.

Also, optionally, a printing operation may be performed on the other side of the third layer 300, that is, the surface in contact with the second layer 200. The printing operation of the three layer 300 may be gravure printing, offset printing, etc., preferably, gravure printing may be performed.

Furthermore, the third layer 300 preferably has a thickness ratio of 1: 0.24 to 0.32 with respect to the sum of all the layers of the wrapping paper.

If the thickness ratio is less than 1: 0.24, the paper texture of the finally produced packaging paper may not be sufficiently produced, and it may be difficult to easily open it with oily or wet hands.If the ratio is greater than 1: 0.32, the packaging paper finally manufactured The thickness of the thick, there is a disadvantage that the manufacturing cost increases.

In the case of using the paper, the paper texture of the wrapping paper is sufficiently produced, and in order to stack the third layer 300 having a uniform thickness, optionally, a rolling process may be performed.

Next, a fourth layer 400 may be provided on one surface of the third layer 300 and include at least one of polyethylene (PE) and polypropylene (PP).

However, preferably it has a cold resistance that can withstand up to -20 ℃, since there is little absorption, PE can be provided with high waterproof, high electrical insulation, excellent chemical resistance, oil resistance and the like .

In the case of the fourth layer 400, it is preferable to have a thickness ratio of 1: 0.10 to 0.18 with respect to the total layer sum of the wrapping paper.

If the thickness ratio of the PE is less than 1: 0.10 with respect to the total of the total layers, the waterproofing of the finally made wrapping paper is not easily performed, and thus the value of the wrapping paper may be degraded.

If the thickness ratio is provided in 1: 0.18 or more, there is a disadvantage that the adhesion is not easily made.

Next, at least one of EVOH (Ethylene Vinyl Alcohol) film and silica film, which is provided on one surface of the fourth layer 400 and includes AL (Aluminium), AL (Aluminium) -laminated film, and coloring pigments. The fifth layer 500 may be provided.

In general, the AL may be used that is excellent in decorative properties due to excellent gas barrier properties, light shielding and gloss.

In addition, as a thermoplastic crystalline resin having a high gas barrier property, an EVOH film having a high oxygen barrier property and gas barrier property of about 100,000 times higher than polyethylene may be used as the ethylene-vinyl copolymer. The pigment may be applied to a silica film.

By including the EVOH film, Al can be prevented from breaking due to external impact, there is an advantage that becomes more flexible.

When using the EVOH film, it is prepared by laminating a polypropylene to the adhesive resin for adhesion of the EVOH.

The EVOH film has an advantage that gas barrier properties may vary depending on the content of ethylene. Generally, with respect to 100 parts by weight of EVOH, the content of ethylene is selected and used in the range of 5 to 95 parts by weight, but preferably 25 to 64 parts by weight may be used.

If the ethylene content of the EVOH film is less than 25 parts by weight, the ethylene content may be too low, which may cause disadvantages that gas is not easily blocked. If the content is more than 64 parts by weight, the manufacturing cost of the wrapping paper may be increased. There may be.

More preferably, the ethylene content may be provided with 40 to 65 parts by weight.

At this time, the EVOH film containing a coloring pigment that can selectively increase the aesthetics and light-shielding properties of the wrapping paper can be used.

The coloring pigment may be provided according to the purpose and use of the wrapping paper such as white, red, black.

Preferably, in order to maintain the light shielding property of Al, a coloring pigment based on red or black may be provided.

Moreover, when the Al film is replaced with the silica film, there is an advantage that there is no difference in appearance, such as the function and form of the packaging, compared to when using the Al film.

In addition, in the case of using the EVOH film or silica film, Al is not completely separated in the recycling process of the packaging paper containing the Al film to compensate for the problem provided in the form of black or gray dots in the recycled product using recycled pulp. There is an advantage that can be made, and more flexible wrapping paper.

In addition, since the separation process of paper and Al film is required by using Al, there is a disadvantage in that the recycling rate is 30% or less, and there is an advantage that it can be economically effective by having a synthetic resin instead of Al.

In addition, there is an advantage that the crack is generated by the Al, the leakage rate due to the cracking phenomenon of aluminum due to the distribution process or the external impact of the wrapping paper is reduced.

In the case of the fifth layer 500, it is preferable to have a thickness ratio of 1: 0.01 to 0.08 with respect to the total layer sum of the wrapping paper.

If the thickness ratio is less than 1: 0.01 with respect to the sum of the total layers, oxygen blocking and shading of the finally produced wrapping paper can be easily performed. There is a problem that the shelf life of the packaged goods can be shortened because it is not made, if the thickness ratio is provided in 1: 0.08 or more, the phenomenon that is easily broken by an external impact is uttered, the manufacturing cost increases Can be generated.

In addition, an AL-laminated film may optionally be used, and the AL-laminated film may include laminating at least one film of EVOH film, silica film, organic material deposition film, and inorganic material deposition film on one surface of AL. .

At this time, the thickness of the laminated film used in the AL-laminated film, with respect to the total of the total layer, may be provided as 1: 0.01 ~ 0.04.

If the thickness ratio is less than 1: 0.01 with respect to the sum of the entire layers, there is a disadvantage in that the gas barrier property is lowered, and in the case where the thickness ratio is greater than 1: 0.04, the manufacturing cost is increased.

Next, it is provided on one surface of the fifth layer 500, LLDPE (Linear low density polyethylene), LDPE (Low density polyethylene), PP (Polypropylene), HDPE (High density polyethylene), CPP (casting polypropylene) of The sixth layer 600 including at least one may be provided.

Preferably called a third polyethylene may be provided with LLDPE which is a synthetic resin developed to be suitable for packaging materials or industrial, agricultural film.

The LLDPE has a moderate physical property between LDPE and HDPE, but has a good balance of toughness and transparency, and has advantages such as heat resistance and low price.

The thickness of the sixth layer 500 preferably has a thickness ratio of 1: 0.24 to 0.32 with respect to the total layer sum of the wrapping paper.

If the thickness of the LLDPE is provided with a thickness ratio of less than 1: 0.24 with respect to the total layer of the wrapping paper, the thickness of the layer except for the LLDPE layer of the wrapping paper is provided with a thick manufacturing cost, and the manufacturing cost increases. When provided with 1: 0.32 or more, there is a disadvantage that neck-in easily occurs.

In addition, the lamination method may be performed to stack the first layer 100 to the sixth layer 600.

In this case, the lamination method may be manufactured by at least one method selected from dry lamination, wet lamination, extrusion lamination (T-Die), hot melt lamination.

Preferably, it can be prepared by a dry lamination method that is easy to manufacture a multi-type film adhesion and high-functional composite film.

When using the dry lamination method, an adhesive for a dry lamination method may be used.

The adhesive for dry lamination is a polyurethane adhesive, a two-component polyurethane adhesive, a solvent-free polyurethane adhesive, a homopolymer, a polyacrylic acid ester adhesive, a cyatoacrylate adhesive, an ethylene copolymer adhesive, a cellulose adhesive, a poly One or more adhesives selected from ester adhesives, polyamide adhesives, amino resin adhesives, phenolic resin adhesives, epoxy adhesives, reactive acrylic adhesives, reactive metaacrylic adhesives, rubber adhesives, silicone adhesives, and inorganic adhesives may be used. .

Preferably, a two-component polyurethane-based adhesive mainly used in the dry lamination method may be used.

This is because the fluid at the end of evaporation of the solvent and the subsequent curing reaction are rich in heat resistance, water resistance, and cold resistance, and can make a flexible and strong film and maintain sufficient adhesion.

2 is a process chart of a wrapping paper made of a laminated sheet according to the present invention.

Hereinafter, the manufacturing process of the wrapping paper made of the laminated sheet of the present invention will be described.

The manufacturing process may include a material preparation step (S100), a printing step (S200), a bonding process step (S300), an altar process step (S400), a wrapping paper manufacturing step (S500).

Since the description of the thickness and the components of each layer has been described above, it will be omitted.

The material preparation step (S100) is a step of preparing the material of the wrapping paper, gravure printing ink, PET to be used for the first layer 100, PE to be used for the second layer 200, to the third layer 300 EV paper or silica film including rust, Hanji, kraft paper, white paper or leaf paper to be used, PE to be used for the fourth layer 400, AL to be used for the fifth layer 500, AL-laminated film, coloring pigments, A step of preparing LLDPE, LDPE, PP, HDPE or CPP, and an adhesive to be used in the sixth layer 600 is performed.

After the material preparation step (S100), the printing step (S200) is performed. The printing step (S200) may include the gravure printing ink and the film of the first layer 100, and may be performed on the other side of the first layer 100 by a gravure printing method.

Next, a bonding step S300 of laminating the first layer 100 through the printing step S200 with the second layer 200 to the sixth layer 600 may be performed. After evaporating all the solvent, a lamination method may be performed, which is a method of tensioning using an adhesive in an uncured liquid phase or hot melt state.

 More specifically, a dry lamination method may be performed. After applying to the first layer 100 to the sixth layer 600 by using a two-component polyurethane-based adhesive of the above-described adhesive, the solvent is volatilized, respectively, the film The laminating agent can be obtained by bonding together.

At this time, the method of laminating the film is a compression lamination between the metal roll and the rubber roll heated to 50 ~ 120 ℃ to pass the cooling roll.

If the metal roll is heated to less than 50 ℃, there is a problem that can not be separated due to the compression of the film of each layer, and when heated to more than 120 ℃, it may be difficult to produce a certain thickness.

Next, the cutting step (S400) for cutting the film by the standard or shape to suit the post-processing step the film passing through the bonding step (S300) may be performed.

Next, a wrapping paper manufacturing step (S500), which is a process of cutting and processing the film which has been subjected to the cutting step (S400) to fit the use, may be performed.

<Example 1> Preparation of a wrapping paper consisting of a laminated sheet according to the present invention .

1. Gravure printing ink, PET to be used for the first layer 100, PE to be used for the second layer 200, roe deer to be used for the third layer 300, PE to be used for the fourth layer 400, fifth layer AL to be used for 500, LLDPE to be used for the sixth layer 600, a two-component polyurethane adhesive, and the like are prepared.

2. The other side of the first layer is printed by the gravure printing method.

3. The printed first layer and the second to sixth layer is laminated by a dry lamination method including a two-component polyurethane adhesive.

4. Cut and cut the film subjected to the dry lamination method according to the specification or shape.

5. The cut film is cut to fit the application to produce a wrapping paper with one side open.

Comparative Example 1 Preparation of a wrapping paper consisting of a laminated sheet including an AL- laminated film .

When preparing the packaging paper was prepared in the same manner as in Example 1 except that the Al-laminated film in which the EVOH film is laminated on one surface of Al as Al-laminated film instead of Al in the second layer 200.

Test Example 1 Preparation of a wrapping paper consisting of a laminated sheet containing LDPE .

The same procedure as in Example 1 was conducted except that LDPE was added instead of LLDPE.

Test Example 2 Preparation of a wrapping paper consisting of a laminated sheet containing HDPE .

The same procedure as in Example 1 was conducted except that HDPE was added instead of LLDPE.

<Test Example 3> Preparation of a wrapping paper consisting of a laminated sheet containing PP .

The same procedure as in Example 1 was conducted except that PP was added instead of LLDPE to prepare the wrapping paper.

Test Example 4 Preparation of a wrapping paper consisting of a laminated sheet containing CPP .

The same procedure as in Example 1 was conducted except that CPP was added instead of LLDPE.

Al and Al Laminated film  Comparison of Potassium Permanganate Consumption by Temperature of Used Wrapping Paper. (mg / L) 60 ℃ X 30 minutes 95 ℃ X 30 minutes 100 ℃ X 2 hours Remarks Example 1 0.1 0.4 0.1 Comparative Example 1 0.1 0.3 -

The test method of potassium permanganate consumption by temperature was tested in compliance with the test method described in the apparatus and container packaging revolution.

As shown in Table 1, the overall consumption was lower than the standard value of 10 mg / L. The potassium permanganate consumption is measured by measuring the amount of a substance that is susceptible to oxidation, and compared with Example 1 and Comparative Example 1, it was shown that the comparative example 1 is less potassium permanganate consumption than Example 1 at high temperature.

Therefore, it can be seen that the potassium permanganate consumption of the Al-laminated film in which the film is laminated on one side of Al is less than that of Al alone.

Evaporation residues according to the fifth layer 500 material compare.( mg / L) Leaching Solvent 60 ℃ X 30 minutes 95 ℃ X 30 minutes 100 ℃ X 2 hours Example 1 water 1.2 1.5 4% acetic acid 0.2 3.7 11.5 20% alcohol 0.2 0.7 3.4 n-heptane 69.0 180.0 - Test Example 1 water 1.3 1.6 - 4% acetic acid 0.2 3.8 12.0 20% alcohol 0.2 0.8 4.5 n-heptane 71.0 182.0 - Test Example 2 water 1.1 1.4 - 4% acetic acid 0.1 3.5 10.0 20% alcohol 0.1 0.5 2.1 n-heptane 67.0 175.0 - Test Example 3 water 1.4 1.8 - 4% acetic acid 0.4 3.9 12.4 20% alcohol 0.3 0.8 5.3 n-heptane 75.0 186.0 - Test Example 4 water 1.4 1.9 - 4% acetic acid 0.4 3.9 12.4 20% alcohol 0.4 0.9 5.4 n-heptane 76.0 185.0 -

The test method of the evaporation residue comparison according to the fifth layer 500 material was tested in accordance with the test method described in the apparatus and container packaging revolution.

As shown in Table 2, irrespective of the type of leaching solvent (water, 4% acetic acid, 20% alcohol, n-heptane), it was found that the evaporation residues, which were all 30 ppm at the use temperature exceeding 100 ° C., were not exceeded. .

However, although Example 1 generally showed lower values than Test Examples 1, 3 and 4, it showed higher values than Test Example 2.

This is because the fifth layer 500 is made of HDPE, which is considered to be a result of the HDPE having a high softening point and excellent rigidity and hardness.

However, in the case of using HDPE, the disadvantage that the use range is narrowed due to the deterioration of the impact strength and tear strength of the HDPE may occur.

In addition, when using LDPE, it is preferable to use LLDPE having an intermediate physical property between LDPE and HDPE, because there is a disadvantage in that the product of the package is not stored for a long time due to high vapor and gas permeability.

Although the preferred embodiments of the present invention have been described above, those skilled in the art can understand that the present invention can be variously modified and changed without departing from the spirit and scope of the present invention as set forth in the claims below. There will be.

100: first layer
200: second layer
300: third layer
400: the fourth layer
500: the fifth layer
600: the sixth floor
S100: Material Preparation Step
S200: Printing Step
S300: bonding process step
S400: altar process step
S500: Wrapping Paper Production Step

Claims (4)

delete delete In the method of manufacturing a laminated sheet for packaging for packaging seeds, fruits, cosmetic solutions or mask packs,
Gravure printing ink, OPP (Oriented Polypropylene) used for the first layer, ORY (Oriented Nylon), NY (Nylon), PE (Polyethylene) used for the second layer, white paper or foil used for the third layer Paper, PE used for the fourth layer, EVOH (Ethylene Vinyl Alcohol) film used for the fifth layer, HDPE (High Density Polyethylene) used in the sixth layer and a two-component polyurethane adhesive preparation step (s100) );
A printing step of performing gravure printing on the other side of the first layer (s200);
Bonding process step (s300) for bonding the first layer and the second to sixth layer after the printing step by lamination method;
Cutting process step (S400) for cutting the film according to the standard or shape to meet the post-processing process through the bonding process step (s300); And
The method of manufacturing a wrapping paper made of a laminated sheet comprising a; comprising a cutting paper manufacturing step (s500) for cutting or processing the film subjected to the cutting step (s400) to meet the purpose. delete

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