KR102564505B1 - Solventless type apparatus for manufacturing eco-friendly wrapping paper, method and the wrapping paper - Google Patents

Abstract

The present invention relates to an apparatus for manufacturing non-solvent type eco-friendly wrapping paper, a manufacturing method using the manufacturing apparatus, and an eco-friendly wrapping paper manufactured by the manufacturing method. Heating the 1st class paper and heating the 3rd class paper before laminating the 3rd class paper to the 2-layer laminated material in the process of laminating the 3-layer laminated material to lower the viscosity of the solvent-free adhesive and increase fluidity, and to increase the flowability of the solvent-free adhesive to the paper fabric, which is the 2nd class paper. It is possible to improve the adhesive strength (adhesion strength) between the paper fabric and the PLA fabric by increasing the absorbency of the paper fabric, and by pressing the 2-ply laminate and the 3-ply laminate by the first and second backup press rollers to increase the compressive force of the heated lamination roller. Adhesion between the 2nd and 1st paper feed/adhesion between the 2nd and 3rd paper is further improved, and fine collection grooves for collecting solvent-free adhesive are formed on the surface of the rotating roller, and the same rotation is achieved by the fine collection grooves. By applying a larger amount of non-solvent adhesive to the paper fabric, the adhesive strength (adhesion strength) of the paper fabric, which is the second paper supply, can be further improved.

Description

Solventless type eco-friendly wrapping paper manufacturing apparatus, manufacturing method using the manufacturing apparatus, and eco-friendly wrapping paper manufactured by the manufacturing method

The present invention relates to a non-solvent type eco-friendly wrapping paper manufacturing apparatus for lamination technology between paper fabric and biodegradable polymer fabric (eg, PLA fabric) rather than lamination between synthetic resin film fabrics, a manufacturing method using the manufacturing device, and It relates to eco-friendly wrapping paper manufactured by the manufacturing method, and more specifically, reduces harmful substances by using solvent-free adhesive, improves the working environment, increases productivity, and increases the absorbency of solvent-free adhesive to paper fabric, which is the second class paper. It relates to a non-solvent type eco-friendly wrapping paper manufacturing apparatus capable of improving the adhesive strength (adhesion strength) between paper fabric and PLA fabric in a laminating process, a manufacturing method using the manufacturing apparatus, and eco-friendly wrapping paper produced by the manufacturing method.

Generally, in distributing food, etc., a certain amount is measured, and the food measured in such a certain amount is packaged or distributed after displaying the food, and a packaging film is used for packaging and identification of the food.

As such, the packaging film used for packaging or identification of food is made in consideration of sealing, waterproofness, air permeability, antibacterial property, human safety, etc. according to the type and characteristics of food, and is manufactured in various forms.

Three-sided packaging, which is the most commonly used food packaging, zipper packaging that can keep the remaining contents airtight, stand-up packaging that can stand up after filling in the contents, and retort packaging that can heat sterilize or sterilize after filling and sealing the contents, etc. There are many different types.

In addition, food packaging films are manufactured and used by laminating various types of film fabrics into a multi-layer structure of two or more layers according to the contents.

Conventionally, lamination of packaging film fabrics is performed using an adhesive containing organic solvents (for example, thinner, toluene, etc., carcinogenic substances). These organic solvents are toxic and have a very strong odor, and in a short time There is a problem of increasing fatigue and causing disorders throughout the human body, including the respiratory system, digestive system, or cranial nerves, and it is also a hazard to hygiene and safety of packaging materials such as food packaging films, and improvement is required.

Conventionally, since a drying chamber for quickly drying the organic solvent must be provided, there is a problem that additional initial installation costs are required and energy consumption is excessive according to its operation, but in order to solve this problem, solvent-free adhesive In the case of using a solventless adhesive, technical difficulties such as a decrease in the adhesive strength of the solventless adhesive cause lamination defects during laminating of packaging film fabrics, so considerable technical difficulties are involved in applying the solventless adhesive.

Republic of Korea Patent Registration No. 10-1984704 Republic of Korea Patent Registration No. 10-1384365 Republic of Korea Patent Registration No. 10-1448066

The present invention was invented to improve the above problems, and the first problem to be solved by the present invention is to heat (preheat) the first paper feed before laminating the second paper paper to the first paper paper in the first lamination process. , By heating (preheating) the third class before laminating the third class to the two-layer laminate in the second laminating process, the viscosity of the solvent-free adhesive is lowered and the fluidity is increased to expand the absorption power of the solvent-free adhesive to the paper fabric, which is the second class. It is to provide a non-solvent type eco-friendly wrapping paper manufacturing apparatus capable of improving the adhesive strength (adhesion strength) between paper fabric and PLA fabric, a manufacturing method using the manufacturing apparatus, and eco-friendly wrapping paper manufactured by the manufacturing method.

In addition, the second problem to be solved by the present invention is to press the 2-ply laminated material and the 3-ply laminated material by the first and second backup press rollers to increase the pressing force of the heated lamination roller, so that the adhesive strength between the paper fabric and the PLA fabric ( It is an object of the present invention to provide a non-solvent type eco-friendly wrapping paper manufacturing apparatus capable of improving adhesion strength, a manufacturing method using the manufacturing apparatus, and eco-friendly wrapping paper manufactured by the manufacturing method.

In addition, the third problem to be solved by the present invention is that fine collection grooves for collecting solvent-free adhesive are formed on the surface of the rotary roller R of the solvent-free accommodating part, and the fine collection grooves provide a larger amount compared to the same rotational speed. A solvent-free type eco-friendly wrapping paper manufacturing apparatus capable of further improving the adhesive strength (adhesive strength) of the paper fabric, which is the second paper, by applying a solvent-free adhesive to the paper fabric, a manufacturing method using the manufacturing device, and manufactured by the manufacturing method It is to provide eco-friendly wrapping paper.

Technical problems of the present invention are not limited to those mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the following description.

In order to achieve the above object, the non-solvent type eco-friendly wrapping paper manufacturing apparatus according to the present invention uses a solvent-free adhesive to laminate the second grade of paper fabric to the first grade of biodegradable polymer fabric to prepare a two-ply laminated product. , The third grade paper of the biodegradable polymer fabric is laminated to the paper fabric of the two-ply laminate to produce a food wrapping paper that is a three-ply laminate, but the biodegradable polymer fabric and the paper fabric are automatically laminated in a roll-to-roll manner. As a non-solvent type eco-friendly wrapping paper manufacturing device,

A first paper transfer unit for transporting and supplying the first paper sheet in a non-printing or printed state with a color of 1 degree or more, and applying a solvent-free adhesive to one side of the first paper sheet; A first laminating unit including a two-ply laminating unit for transporting and supplying the second paper feed to the first paper feed and laminating to produce a two-ply laminate; and

A third paper feed transfer unit for disposing and transporting the third paper sheet at the same position as the first paper sheet, and applying a solvent-free adhesive to one surface of the third paper sheet; And a second lamination unit including a 3-ply laminated unit for receiving the transfer and supply of the 2-ply laminated material and producing a wrapping paper for food, which is a 3-ply laminated material; is made up of

The first lamination unit and the second lamination unit are made of the same configuration,

The first paper feed transport unit includes a first supply roll for supplying the first paper; a transfer roller for continuously supplying the first paper sheet wound around the first supply roll in an unfolded state to a two-ply laminating unit; a plurality of guide rollers for guiding the conveyance of the first paper; a non-solvent application unit (first laminating process) for applying a solvent-free adhesive to one side of the first paper feed while the first paper feed is transferred and supplied through the transfer roller; Including,

The solvent-free application unit (first lamination process) rotates in engagement with the conveying roller and drives a rotating roller (R4) to apply solvent-free adhesive to one surface of the first paper feed; a rotating roller (R3) for applying solvent-free adhesive to the surface of the rotating roller (R4) while rotating in engagement with the rotating roller (R4); a rotating roller (R2) for applying solvent-free adhesive to the surface of the rotating roller (R3) while rotating in engagement with the rotating roller (R3) while maintaining a constant gap (G) with the fixed roller (R1); a solvent-free adhesive supply nozzle (N) for supplying solvent-free adhesive from the dispenser between the fixed roller (R1) and the rotating roller (R2); Including,

The third paper feed transfer unit includes a third supply roll for supplying the third paper; a conveying roller for conveying the third paper feed wound around the third paper supply roll in an unfolded state and continuously supplying the paper to a 3-ply laminated unit; a plurality of guide rollers for guiding the transfer of the third paper; a non-solvent application unit (second laminating process) for applying a solvent-free adhesive to one side of the third paper feed while the third paper feed is transferred and supplied through the conveying roller; Including,

The non-solvent application unit (second laminating process) includes a rotating roller (R4) for applying solvent-free adhesive to one surface of the third paper feed while rotating in engagement with the conveying roller; a rotating roller (R3) for applying solvent-free adhesive to the surface of the rotating roller (R4) while rotating in engagement with the rotating roller (R4); a rotating roller (R2) for applying solvent-free adhesive to the surface of the rotating roller (R3) while rotating in engagement with the rotating roller (R3) while maintaining a constant gap (G) with the fixed roller (R1); a solvent-free adhesive supply nozzle (N) for supplying solvent-free adhesive from the dispenser between the fixed roller (R1) and the rotating roller (R2); includes

The two-ply laminating unit includes a second supply roll for supplying the second paper; A first lamination roll for winding a two-ply laminated product in which the second paper feed is laminated to the first paper paper coated with a solvent-free adhesive on one surface and disposed spaced apart from the first supply roll; Installed between the second supply roll and the first lamination roll to guide the first paper feed and the second paper feed to which the solvent-free adhesive is applied, respectively, and lamination while heating (preheating) to the side of the first lamination roll a heated lamination roller; A plurality of guide rollers for guiding the transport and supply of the first paper and the second paper to which the solvent-free adhesive is applied; includes

The 3-ply lamination unit and a fourth supply roll for receiving and continuously transporting the 2-ply lamination material; A second paper roll for winding a three-ply laminate in a state in which the third paper feed and the two-ply laminate are laminated and disposed spaced apart from the fourth supply roll and having a solvent-free adhesive applied to one side thereof; Installed between the fourth supply roll and the second lamination roll to transfer and process the 3rd feed and the 2-ply laminate to which the solvent-free adhesive is applied, respectively, and lamination while heating (preheating), leading to the second lamination roll side a heated lamination roller for; A plurality of guide rollers for guiding the transfer and supply of the third paper and the two-ply laminate to which the solvent-free adhesive is applied; including,

By the heating lamination roller, the first paper paper is heated (preheated) before laminating the second paper paper to the first paper paper, and the third paper paper is heated (preheated) before laminating the third paper paper to the two-ply laminate. By heating (preheating), the viscosity of the solvent-free adhesive is lowered and the fluidity is increased, thereby improving the absorbency of the solvent-free adhesive to the paper fabric, which is the second paper supply.

In addition, a first backup press roller is additionally installed by pressing the heated lamination roller, and the 2-ply laminate is compressed by the first backup press roller to increase the compressive force of the heated lamination roller, so that the paper fabric and the second paper feed Further improving the adhesion between the PLA fabric, which is the first paper supply,

A second backup press roller is additionally installed on the heated lamination roller, and the 3-ply laminate is compressed by the second backup press roller so that the adhesion between the paper fabric as the second paper and the PLA fabric as the third paper is applied. is configured to further improve.

In addition, in order to apply a larger amount of non-solvent adhesive compared to the same number of revolutions, a plurality of fine collection grooves for collecting solvent-free adhesive may be formed on the surface of the rotary roller R2.

On the other hand, as a method for manufacturing a non-solvent type eco-friendly wrapping paper using a non-solvent type eco-friendly wrapping paper manufacturing apparatus according to the present invention, the first paper paper wound on the first supply roll is continuously transferred and supplied through the first paper feed transfer unit of the first paper unit , The solvent-free adhesive is applied to one side of the first paper feed through the non-solvent coating unit provided on one side and transferred and supplied to the 2-ply lamination part, and the 2-ply paper paper wound on the second supply roll is continuously transferred and supplied to the 2-ply lamination part. However, by laminating to the first paper feed in a state in which the solvent-free adhesive is applied, a two-ply laminated product in which the second paper paper is laminated to the first paper paper is prepared.

Then, in the third paper feed transfer unit on the second paper unit side, the third paper feed wound on the third supply roll is continuously transported and supplied, but the solvent-free adhesive is applied to one side of the third paper paper through the non-solvent applicator provided on one side to By transporting and supplying to the side of the 3-ply lamination where the multi-layer lamination is transferred and supplied, and laminating the 3-layer lamination with the solvent-free adhesive applied to the 2-ply lamination, the food wrapping paper, which is a 3-layer lamination, is completed,

The first paper feed is heated (preheated) before laminating the second paper paper on the first paper paper by the heating lamination roller of the 2-ply lamination part, and by the heating lamination roller of the 3-ply lamination part, the 2 Prior to laminating the third paper on the laminated material, the third paper is heated (preheated) to lower the viscosity of the solvent-free adhesive and increase fluidity, thereby improving the absorbency of the solvent-free adhesive to the paper fabric, which is the second paper.

And in the first lamination process, the two-ply laminate is pressed by the first backup press roller to increase the compressive force of the heated lamination roller to further improve the adhesive strength between the paper fabric as the second paper feed and the PLA fabric as the first paper feed. In the second lamination process, the 3-ply laminate is compressed by the second backup press roller to increase the compressive force of the heated lamination roller to further increase the adhesive strength between the paper fabric as the second paper feed and the PLA fabric as the third paper feed. can improve

In addition, by forming fine collection grooves for collecting solvent-free adhesive on the surface of the rotary roller (R2) and applying a larger amount of solvent-free adhesive compared to the same rotation speed, the adhesive strength of the paper fabric, which is the second paper feed, can be improved. there is.

On the other hand, the solvent-free type eco-friendly wrapping paper according to the present invention uses a solvent-free adhesive to prepare a two-ply laminated product by laminating the paper fabric of the second grade paper to the biodegradable polymer fabric of the first grade paper, and the paper fabric of the two-ply laminated paper. It is made of a three-ply laminate by laminating the biodegradable polymer fabric of the third class.

On the other hand, the solventless adhesive of the present invention is based on 100 parts by weight of polyurethane prepolymer or inomer type polyurethane having an ionic functional group, 4,4'-methylenediphenyl diisocyanate [4,4'-methylenediphenyl diisocyanate ] 15 to 30 parts by weight, o- (p-Isocyanatobenzyl) phenyl isocyanate [o- (p-Isocyanatobenzyl) phenyl isocyanate] 0.5 to 3 parts by weight of a non-solvent laminate adhesive having a mixed composition; Alternatively, 15 to 30 parts by weight of 4,4'-methylenediphenyl diisocyanate [4,4'-methylenediphenyl diisocyanate] based on 100 parts by weight of polyurethane prepolymer or inomer type polyurethane having an ionic functional group, It may be a solvent-free laminate adhesive having a composition in which 1 to 15 parts by weight of isocyanate and 0.1 to 2 parts by weight of o-(p-Isocyanatobenzyl)phenyl isocyanate are mixed. .

As described above, the present invention has the following effects.

First, eco-friendly food wrapping paper with a three-layer structure can be manufactured using a solvent-free adhesive, harmful substances can be significantly reduced compared to conventional organic solvent types, the working environment can be improved, and environmental performance, productivity and efficiency can be improved. can improve

Second, by the heating lamination roller, the first paper is heated before laminating the second paper on the first paper in the process of laminating the two-layer laminate, and the third paper is laminated with the two-layer laminate in the process of laminating the three-layer laminate. It is possible to improve the adhesion (adhesive strength) between the paper fabric and the PLA fabric by heating the third paper feed before lowering the viscosity and increasing the fluidity of the solventless adhesive to increase the absorbency of the solventless adhesive to the paper fabric, which is the second paper feed.

Third, by pressing the 2-ply laminated material and the 3-ply laminated material by the first and second backup press rollers to increase the compressive force of the heated lamination roller, the adhesive force between the second paper paper fabric and the first paper PLA fabric / second paper It is possible to further improve the adhesive strength between the paper fabric as the paper feed and the PLA fabric as the third paper feed.

Fourth, fine collection grooves for collecting solvent-free adhesive are formed on the surface of the rotating roller (R2), and a larger amount of solvent-free adhesive is applied to the paper fabric compared to the same rotation speed by the fine collection groove, and paper, which is the second paper class, is applied. The adhesive strength (adhesion strength) of the fabric can be further improved.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

1 is a configuration diagram showing a first lamination unit in a non-solvent type eco-friendly wrapping paper manufacturing apparatus according to a preferred embodiment of the present invention.
Figure 2 is a configuration diagram showing a second lamination unit in a non-solvent type eco-friendly wrapping paper manufacturing apparatus according to a preferred embodiment of the present invention
Figure 3 is a configuration diagram showing a non-solvent application unit in the first paper feed transfer unit of Figure 1
4 is a configuration diagram showing a non-solvent application unit in the third paper feed transfer unit of FIG. 1
5 is an enlarged view of part A of FIG. 1, showing a heated lamination roller and a first backup press roller in a first lamination process;
6 is an enlarged view of part B of FIG. 1, showing a heated lamination roller and a second backup press roller in a second lamination process;

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings to the extent that those skilled in the art to which the present invention pertains can easily practice the present invention.

In describing the present embodiment, description of technical contents that are well known in the technical field to which the present invention belongs and are not directly related to the present invention will be omitted. This is to more clearly convey the gist of the present invention without obscuring it by omitting unnecessary description.

For the same reason, in the accompanying drawings, some components are exaggerated, omitted, or schematically illustrated.

Also, the size of each component does not entirely reflect the actual size. In each figure, the same reference number is given to the same or corresponding component.

Also, device or element orientation (e.g. “front”, “back”, “up”, “down”, “top”, “bottom”) ", "left", "right", "lateral"), etc., the expressions and predicates used in the present invention are only used to simplify the description of the present invention, and related It will be appreciated that it does not indicate or imply that a device or element simply must have a particular orientation.

Hereinafter, the present invention will be described with reference to the accompanying drawings.

1 is a configuration diagram showing a first laminating unit in a non-solvent type eco-friendly wrapping paper manufacturing apparatus according to a preferred embodiment of the present invention, Figure 2 is a non-solvent type eco-friendly wrapping paper manufacturing apparatus according to a preferred embodiment of the present invention, 2 It is a configuration diagram showing a laminating unit.

FIG. 3 is a configuration diagram showing a non-solvent application unit in the first paper transfer unit of FIG. 1 , and FIG. 4 is a configuration diagram showing a solvent-free application unit in the third paper transfer unit of FIG. 1 .

5 is an enlarged view of part A of FIG. 1, showing a heated lamination roller and a first backup press roller in the first lamination process, and FIG. 6 is an enlarged view of part B of FIG. 1, showing heating in the second lamination process. It is a drawing showing the lamination roller and the second backup press roller.

As shown in Figures 1 to 6, the non-solvent type eco-friendly wrapping paper manufacturing apparatus 2 according to a preferred embodiment of the present invention uses a non-solvent adhesive, the first paper feed 10 of the biodegradable polymer fabric to the paper fabric After laminating the second class paper (20) to produce a two-layer laminate, and then laminating the third class paper (30) of biodegradable polymer fabric to the paper fabric of the two-layer laminate, food wrapping paper (1), which is a three-layer laminate However, it is a device capable of automatically laminating biodegradable polymer fabrics and paper fabrics in a roll-to-roll manner.

In the non-solvent type eco-friendly wrapping paper manufacturing apparatus 2 according to a preferred embodiment of the present invention, the components of the first lamination unit 100 and the second lamination unit 200 are identical to each other, but for convenience of explanation, the reference numbers are different to indicate

In this embodiment, the process of manufacturing a two-ply laminate by the first laminating unit 100 is referred to as a first laminating process, and the process of manufacturing a three-ply laminate by the second laminating unit 200 is a second laminating process. defined as a process.

The non-solvent type eco-friendly wrapping paper 1 of the present invention shown in FIG. 2 is a two-layer laminated paper by dry coating the second paper paper 20 of paper fabric on the first paper paper 10 of biodegradable polymer fabric (non-printing or printing). After preparing the water, it can be prepared by dry coating the third paper feed 30 of the biodegradable polymer fabric (non-printing or printing) on the paper fabric of the two-ply laminate.

The non-solvent type eco-friendly wrapping paper of the present invention refers to the biodegradable wrapping paper of the eco-friendly non-solvent process or the biodegradable PLA packaging material of the non-solvent process.

The present invention uses a solvent-free adhesive method that adheres only with the solid content of an existing adhesive without mixing organic solvents (thinner), but also solves the problem of deterioration in adhesive strength between biodegradable polymer fabric and paper fabric when a solvent-free adhesive is used. It is possible to manufacture an eco-friendly food wrapping paper (1) that is not harmful at all.

The solvent-free adhesive of the present invention is a solvent-free adhesive that does not contain organic solvents with toxic and strong odors, and can reduce harmful substances and improve the working environment compared to conventional organic solvent types, and enables environmentally friendly processing. Since no organic solvent is contained compared to the conventional organic solvent type, it is possible to eliminate the drying chamber and drying process for volatilization of the organic solvent, thereby reducing the energy consumption according to the laminating process and having the advantage of having a fast work speed. can exert

For reference, the solvent-free adhesive method, unlike solvent-based adhesives, is a method of bonding with only solid content (urethane) without a diluting solvent. Since fabrics are bonded with solid content (urethane), the applied surface of the fabric is not uniform and the amount of adhesive applied is small. In this case, the adhesive fails to fill the empty space, resulting in the generation of air bubbles.

In addition, even if the speed of the rotating rollers (R2, R3) is increased, the amount of adhesive applied is limited according to the gap between the fixed roller (R1) and the rotating roller (R2), and it is forced to increase the amount of adhesive applied If the gap between the fixed roller (R1) and the rotary roller (R2) is widened, the variation in the amount of non-solvent adhesive applied according to the speed of the rotary roller (R2) increases, so that the adhesive cannot be sufficiently applied and the adhesive strength is weak. There is a problem.

In order to solve these existing problems, the present invention uses a solvent-free adhesive to prepare a two-ply laminated product by laminating the second paper paper 20 of the paper fabric to the first paper paper 10 of the biodegradable polymer fabric, The third grade paper (30) of biodegradable polymer fabric is laminated to the paper fabric of the two-ply laminate to manufacture the food wrapping paper (1), which is a three-ply laminate, but the first grade paper (10) Heating the first class paper 10 before laminating the second class paper 20, and heating the third class paper 30 before laminating the third class paper 30 to the two-layer laminate in the process of laminating the three-layer laminate It is possible to improve the adhesive strength (adhesion strength) between the paper fabric and the PLA fabric by lowering the viscosity of the solvent-free adhesive and increasing the fluidity to increase the absorbency of the solvent-free adhesive to the paper fabric, which is the second paper supply 20.

In addition, the present invention has a plurality of fine collecting grooves 90 formed on the surface of the rotating roller (R2) to sufficiently apply a larger amount of solvent-free adhesive to the surface of the paper fabric compared to the same rotation speed, so that the paper fabric and the PLA fabric It can improve the adhesive strength (adhesion strength) between the liver. Here, the higher amount compared to the same rotational speed refers to a constant amount that can be controlled during the laminating process.

In addition, as shown in FIGS. 5 and 6, in the present invention, the first and second backup press rollers 70 and 70 press the 2-ply laminate and the 3-ply laminate to increase the pressing force of the heated lamination roller The adhesive force between the paper fabric as the second paper feed and the PLA fabric as the first paper feed / the adhesive force between the paper fabric as the second paper feed and the PLA fabric as the third paper feed may be further improved. Here, the first and second backup press rollers 70 and 70 have the same configuration, the first backup press roller 70 is for explaining the first lamination process, and the second backup press roller 70 is the second This is to explain the merging process.

In general, polymer materials are cheaper than conventional well-known materials and are used for various purposes, but have the disadvantage of taking hundreds of years depending on the type to be completely decomposed naturally when disposed of at the end of life. Therefore, in order to shorten the decomposition time, energy must be forcibly given, but in this case, the emission of various types of pollutants cannot be prevented. Therefore, in order to overcome these limitations, research on polymer materials having the ability to naturally decompose much faster is being actively conducted. These polymers are referred to as biodegradable polymers, and fibers manufactured using such polymers are referred to as biodegradable fibers.

Types of biodegradable polymers are divided into natural products, biological products, and synthetic polymers, and some of these polymers are in the research stage and some are already in the commercialization stage.

Among biodegradable polymers, chitosan has already been put to practical use for clothing, and starch is in the stage of practical use as a molded article by mixing it with resin. Polycaprolactam and aliphatic polyester, which are petroleum-based raw materials, are also in the commercialization stage, and 3GT, called poly(propyleneterephthalate) (PPT or PTT), manufactured using 1,3-propandiol obtained from corn as a raw material, is ' It is on the market under the name of 'Sorro', and its physical properties are said to be in the middle of PBT and PET, which have excellent elasticity.

In particular, polylactic acid (PLA) has excellent biodegradability and can be recycled within one year, so it is expected to be in the limelight as a next-generation material that can solve concerns about petroleum depletion. In addition to being rich in resources, it has excellent formability, heat resistance and other physical properties, so it can be deployed for various purposes.

When polylactic acid (PLA) is converted to lactic acid through glucose by fermenting starch in corn, it can be condensation-polymerized to obtain a polymer that can be melt-spun and molded, such as polyester or polyamide. At the time of disposal, it is landfilled and decomposed into carbohydrates and water by the action of microorganisms in the soil through composting or agricultural material. In 1994, Kanebo Synthetic Fiber came to practical use of such polylactic acid fibers.

PLA has a helical one-dimensional structure and has a higher melting point than other aliphatic polyesters.

Lactic acid as a monomer is an optical isomer composed of D and L forms, and PLA having various physical properties can be obtained by changing the ratio of D and L forms.

Lactide is also a mixture of optical isomers of D, intermediate and L forms, but the production ratio can be easily controlled. In this case, PLA is considered to have a mixture of D-lactide units among L-lactide units. In general, the melting temperature of PLA tends to decrease as the proportion of D-form increases.

Hereinafter, a non-solvent type eco-friendly wrapping paper manufacturing apparatus according to a preferred embodiment of the present invention will be described in more detail.

As shown in FIGS. 1 to 6, the non-solvent type eco-friendly wrapping paper manufacturing apparatus 2 according to a preferred embodiment of the present invention transfers the first paper 10 in a non-printing or printed color of 1 degree or more. While supplying, the first paper feed transfer unit 110 for applying solvent-free adhesive to one surface of the first paper feed 10, and the second paper feed 20 to the first paper feed 10 transferred and supplied from the first paper feed transfer unit 110 A first laminating unit 100 including a two-ply laminating unit 120 for transporting, supplying, and laminating to produce a two-ply laminating product; And a third paper feed transfer unit 210 for transferring and supplying the third paper feed 30 in the same direction as the first paper paper 10 at the same location, but applying a solvent-free adhesive to one surface of the third paper paper 30, Second laminating unit 200 including a 3-ply laminating unit 220 for producing eco-friendly wrapping paper 1, which is a 3-ply laminating material, with the third paper feed 30 transported and supplied from the paper feed transfer unit 210 and the 2-ply laminating material ; made up of

In the first laminating process of the first laminating unit 100, the first paper feed 10 is transported and supplied, and the second paper paper 20 is laminated to the first paper paper 10 to prepare a two-ply laminated product. In the second laminating process of the two laminating unit 200, the third paper feed 30 is transported and supplied in the same direction in the same location, and the third paper feed 30 is laminated to the two-ply laminate to produce a three-ply laminate. Bar, the second lamination process is sequentially performed after the first lamination process.

In the second lamination process, the third paper feed 30 is replaced so as to be transported and supplied in the same direction at the same location as the first paper feed 10, and the two-ply laminate is mounted on the fourth supply roll 221, and the second After completion of the laminating process, the 3-ply laminating product is wound around the second laminating roll 222.

In this way, in the first and second laminating processes, the plurality of rollers and rolls for transporting and guiding the first paper paper 10 to the third paper paper 30 and the non-solvent accommodating part have the same configuration, but the description For convenience, the drawing numbers will be marked differently.

In addition, referring to FIG. 1, the first paper feed transfer unit 110 includes a first supply roll 111 for supplying the first paper paper 10; a conveying roller 112 for conveying the first paper paper 10 wound around the first supply roll 111 in an unfolded state and continuously supplying it to the two-ply laminating unit 120; a plurality of guide rollers 114 for guiding the transport of the first sheet of paper 10; A non-solvent application unit 113 for applying a solvent-free adhesive to one side of the first paper feed 10 while the first paper feed 10 is transferred and supplied through the transfer roller 112; includes

In addition, as shown in FIG. 3, the non-solvent application unit 113 rotates in engagement with the conveying roller 112 and drives to apply the solvent-free adhesive to one surface of the first paper feed 10; a rotating roller (R3) for applying solvent-free adhesive to the surface of the rotating roller (R4) while rotating in engagement with the rotating roller (R4); a rotating roller (R2) for applying solvent-free adhesive to the surface of the rotating roller (R3) while rotating in engagement with the rotating roller (R3) while maintaining a constant gap (G) with the fixed roller (R1); a non-solvent adhesive supply nozzle (N) for supplying non-solvent adhesive from the dispenser (95) between the fixed roller (R1) and the rotating roller (R2); It consists of including.

The dispenser 95 is a device that always supplies the adhesive main agent and the curing agent at a constant temperature and the required amount, and is always controlled by a sensor (not shown) provided inside the dispenser 95 to supply the solvent-free adhesive at a constant temperature and the required amount. there is. The non-solvent adhesive of the dispenser 95 is supplied between the fixed roller R1 and the rotating roller R2 (gap: G) through the non-solvent adhesive supply nozzle N.

Looking at the operation of the non-solvent application unit 113 configured as described above, the non-solvent adhesive of the dispenser 95 is supplied between the fixed roller R1 and the rotating roller R2 through the non-solvent adhesive supply nozzle N. The rotating roller (R2) rotates in engagement with the rotating roller (R3) while maintaining a constant gap (G) with the fixed roller (R1) to apply solvent-free adhesive to the surface of the rotating roller (R2). The rotating roller (R3) rotates in engagement with the rotating roller (R4) while applying solvent-free adhesive to the surface of the rotating roller (R4). The rotating roller R4 and the conveying roller 112 apply solvent-free adhesive to one side of the first paper sheet 10 .

In addition, referring to FIG. 2 , the third paper feed transfer unit 210 includes a third supply roll 211 for supplying the third paper paper 30; a conveying roller 212 for conveying the third paper feed 30 wound around the third supply roll 211 in an unfolded state and continuously supplying it to the three-ply laminating unit 220; a plurality of guide rollers 214 for guiding the transfer of the third paper feed 30; a non-solvent application unit 213 for applying a solvent-free adhesive to one side of the third paper feed 30 while the third paper feed 30 is transferred and supplied through the transfer roller 212; includes

In addition, as shown in FIG. 4, the non-solvent application unit 213 rotates in engagement with the conveying roller 212 and rotates to apply solvent-free adhesive to one side of the third paper feed 30; a rotating roller (R3) for applying solvent-free adhesive to the surface of the rotating roller (R4) while rotating in engagement with the rotating roller (R4); a rotating roller (R2) for applying solvent-free adhesive to the surface of the rotating roller (R3) while rotating in engagement with the rotating roller (R3) while maintaining a constant gap (G) with the fixed roller (R1); a non-solvent adhesive supply nozzle (N) for supplying non-solvent adhesive from the dispenser (95) between the fixed roller (R1) and the rotating roller (R2); It consists of including.

Looking at the operation of the non-solvent application unit 213 configured as described above, the non-solvent adhesive of the dispenser 95 is supplied between the fixed roller R1 and the rotating roller R2 through the non-solvent adhesive supply nozzle N. The rotating roller (R2) rotates in engagement with the rotating roller (R3) while maintaining a constant gap (G) with the fixed roller (R1) to apply solvent-free adhesive to the surface of the rotating roller (R2). The rotating roller (R3) rotates in engagement with the rotating roller (R4) while applying solvent-free adhesive to the surface of the rotating roller (R4). The rotating roller R4 and the conveying roller 212 apply solvent-free adhesive to one side of the third paper feed 30 .

The dispenser 95 is a device that always supplies the adhesive main agent and the curing agent at a constant temperature and the required amount, and is always controlled by a sensor (not shown) provided inside the dispenser 95 to supply the solvent-free adhesive at a constant temperature and the required amount. there is. The non-solvent adhesive of the dispenser 95 is supplied between the fixed roller R1 and the rotating roller R2 (gap: G) through the non-solvent adhesive supply nozzle N.

Referring to FIGS. 3 and 4, the solvent-free adhesive is applied to the rotating roller R3 by rotating the rotating roller R2 with a gap G of about 1/100 mm between the fixed roller R1 and the rotating roller R2. make it transfer The rotating roller (R2) is usually about 2% faster than the rotating roller (R4), and the rotating roller (R3) is usually about 20% faster than the rotating roller (R4), and the rotating roller (R2) and the rotating roller (R3 ) can be determined by changing the rotation ratio relative to the rotating roller (R4) to determine the coating amount of the solvent-free adhesive. The fixed roller (R1) may be made of chrome plating, the rotating roller (R2) may be made of ceramic coating, the rotating roller (R3) may be made of rubber-coated roller, and the rotating roller (R4) may be made of ceramic coating.

In addition, the two-ply laminating part 120 includes a second supply roll 121 for supplying the second paper supply 20; A first paper roll 122 that is spaced apart from the first supply roll 121 and winds a two-ply laminated material in which the second paper paper 20 is laminated to the first paper paper coated with a solvent-free adhesive on one surface; The first paper feed 10 and the second paper feed 20 installed between the second supply roll 121 and the first laminating roll 122 to which the solvent-free adhesive is applied are transported and laminated while heating, respectively. One lamination roller 123 for guiding to the side of the lamination roll 122; a plurality of guide rollers 124 for guiding the transfer and supply of the first paper paper 10 and the second paper paper 20 to which the solvent-free adhesive is applied; It is composed of.

Looking at the operation of the two-ply lamination unit 120 configured as described above, the heated lamination roller 123 transports and heats the first paper feed 10 and the second paper paper 20 to which the solvent-free adhesive is applied, respectively, and removes the paper after lamination. By leading to the side of the first paper roll 122, the viscosity of the non-solvent adhesive is lowered and the fluidity is increased, thereby improving the absorbency of the non-solvent adhesive to the paper fabric, which is the second paper supply 20.

In addition, the 3-ply laminated unit 220 includes a fourth supply roll 221 for receiving and continuously transporting the 2-ply laminated material; A second paper roll 222 for winding a three-ply laminated material in which the third paper feed 30 and the two-ply laminated material are spaced apart from the fourth supply roll 221 and coated with a solvent-free adhesive on one side, and ; It is installed between the 4th supply roll 221 and the 2nd lamination roll 222, and the 3rd paper 30 to which the solvent-free adhesive is applied and the 2-ply laminate are transported and laminated while heating, respectively, and then the 2nd lamination roll a heated lamination roller 223 for guiding to the side of (222); A plurality of guide rollers 224 for guiding the transfer and supply of the third paper 30 and the two-ply laminate to which the non-solvent adhesive is applied; It is composed of.

Looking at the operation of the 3-ply lamination unit 220 configured as described above, the heated lamination roller 223 transports the third paper feed 30 and the 2-ply lamination material to which the solvent-free adhesive is applied, respectively, heats them, and then laminates them. By leading to the side of the second paper roll 222, the viscosity of the non-solvent adhesive is lowered and the fluidity is increased, thereby improving the absorbency of the non-solvent adhesive to the paper fabric, which is the second paper supply 20.

Hereinafter, the components of the non-solvent type eco-friendly wrapping paper manufacturing apparatus 2 according to the present invention will be described in detail.

As described above, the first lamination unit 100 is composed of a first paper transfer unit 110 and a two-ply lamination unit 120, and the second lamination unit 200 includes a third paper transfer unit 210 and 3 It consists of a laminated portion 220. Here, the first lamination unit 100 and the second lamination unit 200 have the same configuration, and are only for convenience of explanation, and the two-layer lamination part 120 on the side of the first lamination unit 100 and the second lamination unit 120 The 3-ply lamination part 220 on the side of the lamination unit 200 is not configured separately but has the same configuration.

The first paper feed transfer unit 110 of the first lamination unit 100 transfers and supplies the first paper paper 10 in a non-printed or printed state with a color of 1 degree or more, but on one side of the first paper paper 10 It is a configuration for applying solvent-free adhesive.

The first paper feed transfer unit 110 includes a first supply roll 111 for supplying the first paper paper 10, which is a biodegradable polymer fabric (eg, PLA fabric), and to the first supply roll 111. During transfer and supply of the first paper feed 10 through the conveying roller 112 and the conveying roller 112 for continuously supplying the wound first paper feed 10 in an unfolded state to the two-ply laminating unit 120 It includes a solvent-free application unit 113 for applying a solvent-free adhesive to one side of the first paper sheet 10.

A plurality of guide rollers 114 are installed between the transfer rollers 112 to guide the transfer and supply of the first paper sheet 10 .
In the non-solvent type eco-friendly wrapping paper manufacturing apparatus 2 according to the present invention, the first laminating unit 100 for producing a two-ply laminated product by laminating the second paper paper 20 to the first paper paper 10, and then the first paper paper 10 The second laminating unit 200 for producing a three-ply laminated product by laminating the third paper feed 30 to the two-ply laminated product made in one laminating unit 100 is sequentially executed at the same position, the first The first paper feed transfer unit 110 in the lamination process has the same configuration as the third paper feed transfer unit 210 in the second lamination process, and the two-layer lamination unit 120 in the first lamination process is It is composed of the same configuration as the 3-ply laminating unit 220 in the process, so that the second laminating process is performed after the first laminating process in one wrapping paper manufacturing device to manufacture the food wrapping paper 1, which is the three-ply laminated product, so that the wrapping paper The overall configuration of the manufacturing apparatus is simple, but the manufacturing cost can be reduced.

In the solventless adhesive of the present invention, in order to have sufficient adhesive strength according to the lamination of paper fabric and biodegradable polymer fabric, polyurethane prepolymer or inomer type polyurethane having an ionic functional group 100 parts by weight 4, 15 to 30 parts by weight of 4'-methylenediphenyl diisocyanate [4,4'-methylenediphenyl diisocyanate], 0.5 to 3 parts by weight of o-(p-Isocyanatobenzyl)phenyl isocyanate [o-(p-Isocyanatobenzyl)phenyl isocyanate] It is preferred to use a solvent-free laminate adhesive having a mixed composition.

In addition, in the solventless adhesive of the present invention, polyurethane prepolymer or inomer type polyurethane having an ionic functional group 4,4'-methylenediphenyl diisocyanate based on 100 parts by weight of 4,4'-methylenediphenyl diisocyanate] 15 to 30 parts by weight, 1 to 15 parts by weight of polyisocyanate, and 0.1 to 2 parts by weight of o-(p-Isocyanatobenzyl)phenyl isocyanate [o-(p-Isocyanatobenzyl)phenyl isocyanate] Non-solvent having a mixed composition Laminate adhesives may be used.

Here, the ionic functional group may be any one group selected from functional groups having polarity such as a hydroxy group, a carboxy group, an aldehyde group, a carbonyl group, and a phosphoric acid group.

The 2-ply laminating unit 120 transports and supplies the paper fabric, which is the second paper sheet 20, to the first paper sheet 10 transferred and supplied from the first paper feed transfer unit 110 and laminates to produce a two-layer laminated product. is a composition for

The two-ply laminating part 120 is spaced apart from the second supply roll 121 for supplying the second paper supply 20, which is a paper fabric, and the first supply roll 121, and has a solvent-free adhesive on one side. A first paper roll 122 for winding a two-ply laminated material in which the second paper paper 20 is laminated on the applied first paper paper 10, the second supply roll 121, and the first paper paper roll 122 A heated lamination roller 123 for guiding to the side of the first lamination roll 122 after lamination while heat-transferring the first paper feed 10 and the second paper feed 20 to which the solvent-free adhesive is applied, respectively, and It includes a plurality of guide rollers 124 for guiding the transfer and supply of the coated first paper sheet 10 and the second paper sheet 20.

The first lamination roll 122 side is installed so as to be located in a direction facing the first supply roll 111 of the first paper feed transfer unit 110. At this time, the two-ply laminate in which the first paper feed 10 and the second paper feed 20 are laminated through the two-ply laminate part 120 is wound around the first laminate roll 122.

The heated lamination roller (transfer roller) 123 is installed to have at least one structure of a pair of compression rollers for lamination lamination.

On the other hand, the second lamination unit 200 is transported and supplied from the third paper feed transfer unit 210 and transported and supplied with the third paper 30 coated with solvent-free adhesive on one side and the 2-ply laminated material, which is a 3-ply laminated material. This is a configuration that completes the wrapping paper 1 for use.

The third paper feed transfer unit 210 of the second lamination unit 200 transfers and supplies the biodegradable polymer fabric of the third paper paper 30, but is configured to apply a solvent-free adhesive to one side of the third paper paper 30. , The third supply roll 211 for supplying the third paper feed 30 and the third paper feed 30 wound around the third supply roll 211 are transferred in an unfolded state to the three-ply laminated unit 220 A transfer roller 212 for continuous supply, and a non-solvent applicator 213 for applying solvent-free adhesive to one side of the third paper feed 30 while the third paper feed 30 is transferred and supplied through the feed roller 212 ). A plurality of guide rollers 214 are installed between the transfer rollers 212 to guide the transfer and supply of the third paper sheet 30 .

The non-solvent adhesive applied through the non-solvent application unit 213 uses the same solvent-free laminate adhesive made of the previously described mixed composition.

The three-ply laminated unit 220 receives and laminates the third paper feed 30 transferred and supplied from the third paper feed transfer unit 210 and the two-ply laminated material transferred and supplied from the fourth supply roll 221 to form a 3 It is a configuration for manufacturing the wrapping paper 1 for food, which is a laminated material.

The 3-ply laminated unit 220 includes a fourth supply roll 221 for receiving and continuously transporting the 2-ply laminated material; A second paper roll for winding a three-ply laminate in a state in which a two-ply laminate is laminated with the third paper feed 30 having solvent-free adhesive applied to one side and disposed adjacent to the fourth supply roll 221 at intervals ( 222) and; The second paper roll ( 222) and a heated lamination roller 223 for leading to the side; A plurality of guide rollers 224 for guiding the transfer and supply of the third paper feed 30 and the two-ply laminate; It is composed of.

The second lamination roll 222 side is installed so as to be located in a direction facing the third supply roll 211 of the third paper feed transfer unit 210.

Here, the heated lamination roller (transfer roller) 223 is installed to have one or more compression roller structures for laminating. Here, the third paper feed 30 may be variously applied, including PLA fabric.

In the non-solvent type eco-friendly wrapping paper manufacturing apparatus 2 according to the present invention having the above-described configuration, the first feed roll 111 is wound around the first supply roll 111 through the first paper feed transfer unit 110 of the first lamination unit 100. While the paper 10 is continuously transported and supplied, the non-solvent adhesive is applied to one side of the first paper 10 through the non-solvent application unit 113 provided on one side and transferred and supplied to the two-ply laminating unit 120.

In the two-ply lamination unit 120, the second paper feed 20 wound around the second supply roll 121 is continuously transported and supplied, but laminated to the first paper feed 10 in which the solvent-free adhesive is applied, so that the two-ply lamination is performed. Water is wound around the first lamination roll 122.

Then, in the third paper feed transfer unit 210 on the side of the second paper unit 200, the third paper feed 30 wound around the third supply roll 211 is continuously transferred and supplied, but the non-solvent coating unit provided on one side ( 213), the solvent-free adhesive is applied to one side of the third paper feed 30 and transferred and supplied to the 3-ply laminated portion 220 where the 2-ply laminated material is transferred and supplied.

Accordingly, by laminating the third paper feed 30 to which the solvent-free adhesive is applied to the two-ply laminate, the food wrapping paper 1, which is a three-ply laminate, is completed.

Through the non-solvent type eco-friendly wrapping paper manufacturing apparatus 2 according to the present invention having the above-described configuration, it is possible to manufacture a food wrapping paper 1 having a three-ply structure by laminating fabrics in an eco-friendly manner using a solvent-free adhesive, and using a conventional organic solvent It can greatly reduce harmful substances compared to other types, improve the working environment, and realize environmental performance, productivity and efficiency.

In addition, the first paper paper 10 is heated before laminating the second paper paper 20 to the first paper paper 10 by the heated lamination roller 123 (223), and the third paper paper ( 30) before laminating, the third paper feed 30 is heated to lower the viscosity of the solventless adhesive and increase the fluidity, thereby improving the absorbency of the solventless adhesive to the paper fabric of the second paper feed 20.

In addition, a first backup press roller 70 is additionally installed on the heated lamination roller 123 by pressing, and the 2-ply laminate is compressed by the first backup press roller 70 to compress the heated lamination roller 123. It is possible to further improve the adhesive strength between the paper fabric as the second paper feed and the PLA fabric as the first paper feed by increasing.

A second backup press roller 70 is installed on the heated lamination roller 223, and a 3-ply laminate is pressed by the second backup press roller 80 to increase the compression force of the heated lamination roller 223 to increase the pressurization of the laminate. It is possible to further improve the adhesion between the paper fabric as the second paper and the PLA fabric as the third paper.

The heating lamination rollers 123 and 223 may have a structure of a pair of compression rollers for laminating lamination.

The first and second backup press rollers 70 and 70 may be configured to selectively control the pressing force of the 2-ply laminate and the 3-ply laminate by driving the actuator 5, respectively.

In addition, it is preferable that a plurality of fine collecting grooves 90 for collecting the solvent-free adhesive are formed on the surface of the rotary roller R2 in order to apply a larger amount of solvent-free adhesive to the surface of the paper fabric compared to the same rotation speed.

Since the solvent-free adhesive is collected in the fine collection groove 90, a larger amount of solvent-free adhesive compared to the same rotational speed is applied to the paper fabric without widening (enlarging) the gap G between the fixed roller (R1) and the rotating roller (R2). can be applied to the surface of

In this way, as a larger amount of non-solvent adhesive is applied to the surface of the paper fabric, the first paper paper 10 and the third paper paper 30 can be more firmly attached to the paper paper fabric, which is the second paper paper 20.

On the other hand, in the method of manufacturing the non-solvent type eco-friendly wrapping paper 1 using the non-solvent type eco-friendly wrapping paper manufacturing apparatus 2 according to the present invention, the first supply roll through the first paper feed transfer unit 110 of the first lamination unit 100 The first paper feed 10 wound around (111) is continuously transported and supplied, but the solvent-free adhesive is applied to one side of the first paper feed 10 through the non-solvent application unit 113 provided on one side, so that the two-ply laminated unit 120 ) to be transported and supplied.

In the two-ply laminating unit 120, the second paper feed 20 wound around the second supply roll 121 is continuously transported and supplied, but laminated to the first paper paper 10 in which the solvent-free adhesive is applied, A two-ply laminate in which the second paper feed 20 is laminated to the first paper paper 10 is wound around the first paper roll 122. Remove the two-ply laminated material laminated in the first laminating process.

Then, in the third paper feed transfer unit 210 on the side of the second paper unit 200, the third paper feed 30 wound around the third supply roll 211 is continuously transferred and supplied, but the non-solvent coating unit provided on one side ( 213), the solvent-free adhesive is applied to one side of the third paper feed 30, and the remounted 2-ply laminate is transferred and supplied to the side of the 3-ply laminate 220, where the second paper feed 10 is supplied. By laminating the third paper 30 to which the solvent-free adhesive is applied to the 2-ply laminated material to which the paper feed 20 is laminated, the food wrapping paper 1, which is a 3-ply laminate, is manufactured, but the 3-ply laminate is the second laminate roll. (222).
In the method for manufacturing non-solvent type eco-friendly wrapping paper according to the present invention, the first lamination unit 100 for producing a two-ply laminate by laminating the second paper 20 to the first paper 10, and then the first lamination unit The second lamination unit 200 for producing a 3-ply laminate by laminating the third paper feed 30 to the 2-ply laminate made in (100) is executed sequentially at the same position,
The first paper feed transfer unit 110 in the first lamination process has the same configuration as the third paper feed transfer unit 210 in the second lamination process, and the two-layer lamination unit 120 in the first lamination process It is composed of the same configuration as the 3-ply laminating unit 220 in the second laminating process, and the second laminating process is executed after the first laminating process in one wrapping paper manufacturing device to manufacture the food wrapping paper 1, which is the three-ply laminated product. By doing so, the overall configuration of the wrapping paper manufacturing apparatus can be simplified while manufacturing cost can be reduced.

In addition, the first paper paper 10 is heated before laminating the second paper paper 20 to the first paper paper 10 by the heated lamination rollers 123 and 223, and the third paper paper is added to the two-ply laminated material. Before laminating (30), the third paper feed (30) is heated to lower the viscosity of the solvent-free adhesive and increase fluidity to increase the absorption of the solvent-free adhesive to the paper fabric, which is the second paper feed (20), thereby increasing the adhesive strength (attachment) between the paper fabric and the PLA fabric. strength) can be improved.

In addition, by pressing the two-ply laminate by the first backup press roller 70 to increase the pressing force of the heated laminate roller 123, the adhesive force between the paper fabric as the second paper and the PLA fabric as the first paper is further improved, , By pressing the three-ply laminate by the second backup press roller 70 to increase the compressive force of the heated laminate roller 223, the adhesive strength between the paper fabric as the second paper feed and the PLA fabric as the third paper feed can be further improved. there is.

In addition, a larger amount of solvent-free adhesive is applied to the paper fabric compared to the same rotation speed using the fine collection groove 90 for collecting the solvent-free adhesive on the surface of the rotating roller (R2), and the paper fabric, which is the second paper feed (20) It is possible to further improve the adhesive strength (adhesive strength) of

In addition, in the lamination process of the present invention, in the case of roll work, upon completion of the primary lamination process, the inside (inner surface) of the roll is replaced with the outer surface (outer surface). As the pressing pressure decreases toward the outer surface of the roll, the adhesive force gradually decreases from the inner surface to the outer surface of the roll.

That is, after the 1st lamination, the 2nd lamination is performed at the time when the proper adhesive strength is obtained before curing is completed (48H), and the inner surface of the roll is replaced with the outer surface of the roll, so that the outer surface during the 1st lamination is replaced with the inner surface during the 2nd lamination. It is preferable to compensate for the insufficient adhesive strength of the outer surface during the first lamination, and to compensate for the insufficient outer surface during the 2nd lamination by turning the inner and outer surfaces over during the slitter after lamination. At this time, it is preferable to make the curing time longer than the standard in order to give sufficient time for the solvent-free adhesive to penetrate the paper fabric.

In the lamination process of the present invention, the conversion of the inner and outer surfaces is preferably performed within 12 hours (H), which is shorter than the standard curing time (48H). Rolls are produced in units of 2000M, and the center and outer surfaces are divided into inner, middle and outer surfaces in units of about 700M.

On the other hand, preferred embodiments of the present invention have been disclosed in the present specification and drawings, and although specific terms have been used, they are only used in a general sense to easily explain the technical content of the present invention and help understanding of the present invention. It is not intended to limit the scope of the invention. It is obvious to those skilled in the art that other modified examples based on the technical idea of the present invention can be implemented in addition to the embodiments disclosed herein.

The present invention may be modified in many ways and may take many forms. However, it should be understood that the present invention is not limited to the particular forms mentioned in the above detailed description, but rather all modifications, equivalents and substitutes within the spirit and scope of the present invention as defined by the appended claims. should be understood as including

1: Eco-friendly food wrapping paper
2: Solvent-free type eco-friendly wrapping paper manufacturing device
10: 1st paper
20: 2nd paper feed
30: 3rd paper
70, 70: first and second backup press rollers
90: fine collecting groove
95: dispenser
100: first lamination unit
110: first paper feed transfer unit
111: first supply roll
112: conveying roller
113: solvent-free applicator
114: guide roller
120: 2-ply laminating part
121: second supply roll
122: first laminating roll
123: heated lamination roller
124: guide roller
200: second lamination unit
210: 3rd paper feeding unit
211: third supply roll
212: conveying roller
213: solvent-free applicator
214: guide roller
220: 3-ply laminating part
221: fourth supply roll
222: second laminating roll
223: heated lamination roller
224: guide roller
A: actuator (driving part)
G: gap
N: Solvent-free adhesive supply nozzle
R1: fixed roller
R2, R3, R4: Rotating roller

Claims (8)

Using a non-solvent adhesive, after laminating the second paper 20 of the paper fabric to the first paper 10 of the biodegradable polymer fabric to prepare a two-ply laminate, the biodegradable polymer to the paper fabric of the two-ply laminate A non-solvent type eco-friendly wrapping paper manufacturing device for manufacturing food wrapping paper (1), which is a three-ply laminate, by laminating the third feed paper (30) of fabric, and automatically laminating the biodegradable polymer fabric and the paper fabric in a roll-to-roll manner. as,
A first paper transfer unit 110 for transporting and supplying the first paper sheet 10 in a non-printing or printed state with a color of 1 degree or more, and applying a solvent-free adhesive to one surface of the first paper sheet 10; 1 including a 2-ply laminating unit 120 for producing a 2-ply laminated product by transferring and laminating the second paper feed 20 to the first paper feed 10 transferred and supplied from the first paper feed transfer unit 110 Laminating unit 100; and
A third paper feed transfer unit 210 for disposing and supplying the third paper feed 30 at the same position as the first paper paper 10, and applying a solvent-free adhesive to one surface of the third paper paper 30, A three-ply laminated unit 220 for receiving a two-ply laminated material transferred to the third paper feeder 30 transferred and supplied from the third paper feed transfer unit 210 to produce a food wrapping paper 1 that is a three-ply laminated material. Second laminating unit 200; is made up of
The first paper feed transfer part 110 includes a first supply roll 111 for supplying the first paper paper 10; a transfer roller 112 for continuously supplying the first paper sheet 10 wound around the first supply roll 111 to the two-ply laminating unit 120 by transferring the first paper sheet 10 in an unfolded state; a guide roller 114 for guiding the transport of the first paper sheet 10; a non-solvent application unit 113 for applying a solvent-free adhesive to one side of the first paper paper 10 while the first paper paper 10 is transferred and supplied through the conveying roller 112; Including,
The non-solvent application unit 113 rotates in engagement with the conveying roller 112 and drives a rotating roller R4 to apply solvent-free adhesive to one surface of the first paper feed 10; a rotating roller (R3) for applying solvent-free adhesive to the surface of the rotating roller (R4) while rotating in engagement with the rotating roller (R4); a rotating roller (R2) for applying solvent-free adhesive to the surface of the rotating roller (R3) while rotating in engagement with the rotating roller (R3) while maintaining a constant gap (G) with the fixed roller (R1); a non-solvent adhesive supply nozzle (N) for supplying non-solvent adhesive from the dispenser (95) between the fixed roller (R1) and the rotating roller (R2); Including,
The third paper feed transfer part 210 includes a third supply roll 211 for supplying the third paper paper 30; a conveying roller 212 for conveying the third paper feed 30 wound around the third supply roll 211 in an unfolded state and continuously supplying it to the three-ply laminating part 220; a guide roller 214 for guiding the transfer of the third paper feed 30; a non-solvent application unit 213 for applying a solvent-free adhesive to one side of the third paper feed 30 while the third paper feed 30 is transferred and supplied through the transfer roller 212; Including,
The non-solvent application unit 213 includes a rotary roller R4 for applying solvent-free adhesive to one surface of the third paper feed 30 while rotating in engagement with the conveying roller 212; a rotating roller (R3) for applying solvent-free adhesive to the surface of the rotating roller (R4) while rotating in engagement with the rotating roller (R4); a rotating roller (R2) for applying solvent-free adhesive to the surface of the rotating roller (R3) while rotating in engagement with the rotating roller (R3) while maintaining a constant gap (G) with the fixed roller (R1); a non-solvent adhesive supply nozzle (N) for supplying non-solvent adhesive from the dispenser (95) between the fixed roller (R1) and the rotating roller (R2); Including,
The two-ply laminating part 120 includes a second supply roll 121 for supplying the second paper paper 20; A first paper roll 122 for winding a two-ply laminated material in which the second paper paper 20 is laminated to the first paper paper 10 disposed spaced apart from the first supply roll 121 and having a solvent-free adhesive applied to one surface thereof. )class; It is installed between the second supply roll 121 and the first lamination roll 122, and the first paper feed 10 and the second paper feed 20 to which the solvent-free adhesive is applied are respectively transported, treated, and laminated while heating. a heated lamination roller 123 for inducing to the side of the first lamination roll 122; A plurality of guide rollers 124 for guiding the transfer and supply of the first paper paper 10 and the second paper paper 20 to which the solvent-free adhesive is applied; Including,
The 3-ply laminated unit 220 includes a fourth supply roll 221 for receiving and continuously transporting the 2-ply laminated material; A second paper roll 222 for winding a three-ply laminate in a state in which the third paper feed 30, which is spaced apart from the fourth supply roll 221 and has a solvent-free adhesive applied to one side, and the two-ply laminate are laminated class; It is installed between the fourth supply roll 221 and the second laminating roll 222, and the third paper feed 30 to which the solvent-free adhesive is applied and the two-ply laminate are transported, treated, and laminated while heating, respectively. 2 a heated lamination roller 223 for guiding to the side of the lamination roll 222; A guide roller 224 for guiding the transfer and supply of the third paper 30 and the two-ply laminate to which the non-solvent adhesive is applied; including,
The first paper supply 10 is heated before laminating the second paper paper 20 to the first paper paper 10, and the third paper paper 10 is heated before laminating the third paper paper 30 to the two-ply laminated product. It is characterized by heating the paper feed 30 to lower the viscosity of the solvent-free adhesive and increase the fluidity to improve the absorbency of the solvent-free adhesive to the paper fabric, which is the second paper feed 20,
The first lamination unit 100 for manufacturing a 2-ply laminate by laminating the second paper 20 with the first paper feed 10, and then the 2-ply laminate made in the first lamination unit 100 The second lamination unit 200 for producing a 3-ply laminated product by laminating the third paper feed 30 is sequentially executed at the same location,
The first paper feed transfer unit 110 in the first lamination process has the same configuration as the third paper feed transfer unit 210 in the second lamination process, and the two-layer lamination unit 120 in the first lamination process It is composed of the same configuration as the 3-ply laminating unit 220 in the second laminating process, and the second laminating process is executed after the first laminating process in one wrapping paper manufacturing device to manufacture the food wrapping paper 1, which is the three-ply laminated product. By doing so, a non-solvent type eco-friendly wrapping paper manufacturing apparatus in which the overall configuration of the wrapping paper manufacturing apparatus is simple and the production cost is reduced. According to claim 1,
A first backup press roller 70 is installed by pressing on the heated lamination roller 123, and the 2-ply laminate is pressed by the first backup press roller 70 to increase the compressive force of the heated lamination roller 123. to further improve the adhesive strength between the second paper feed 20 and the first paper paper 10;
A second backup press roller 70 is installed by pressing on the heated lamination roller 223, and the 3-ply laminate is compressed by the second backup press roller 70 to increase the compressive force of the heated lamination roller 223. It is characterized in that the adhesive strength between the second paper feed 20 and the third paper feed 30 is further improved by increasing the
The first backup press roller 70 in the first lamination process has the same configuration and the same function as the second backup press roller 70 in the second lamination process. Device. According to claim 1,
Solvent-free type characterized in that a plurality of fine collecting grooves 90 for collecting solvent-free adhesive are formed on the surface of the rotating roller (R2) in order to apply a larger amount of solvent-free adhesive to the surface of the paper fabric compared to the same rotation speed Eco-friendly wrapping paper manufacturing device. According to claim 1,
The biodegradable polymer is a non-solvent type eco-friendly wrapping paper manufacturing apparatus, characterized in that polylactic acid (PLA). A method for manufacturing a non-solvent type eco-friendly wrapping paper using the non-solvent type eco-friendly wrapping paper manufacturing apparatus according to claim 2,
The first paper feed 10 wound around the first supply roll 111 is continuously transferred and supplied through the first paper feed transfer unit 110 of the first lamination unit 100, but the non-solvent coating unit 113 provided on one side A solvent-free adhesive is applied to one side of the first paper feed 10 through and transferred and supplied to the two-ply laminating unit 120,
In the two-ply laminating unit 120, the second paper feed 20 wound around the second supply roll 121 is continuously transported and supplied, but is laminated to the first paper paper 10 in which the solvent-free adhesive is applied. By doing so, after preparing a two-ply laminated product in which the second paper paper 20 is laminated to the first paper paper 10,
In the third paper feed transfer unit 210 on the side of the second lamination unit 200, the third paper feed 30 wound around the third supply roll 211 is continuously transferred and supplied, but the non-solvent coating unit 213 provided on one side A solvent-free adhesive is applied to one side of the third paper feed 30 through and transferred and supplied to the 3-ply laminated portion 220,
By laminating the third paper feed 30 to which the solvent-free adhesive is applied to the remounted two-ply laminate, the food wrapping paper 1, which is a three-ply laminate, is completed,
The first paper paper 10 is heated before laminating the second paper paper 20 to the first paper paper 10 by the heating lamination roller 123 of the two-ply lamination unit 120,
By the heated lamination roller 223 of the 3-ply laminating unit 220, before laminating the 3rd paper feed 30 to the 2-ply laminate, the third paper feed 30 is heated to reduce the viscosity of the solvent-free adhesive. lowering and increasing the fluidity to increase the absorbency of the solvent-free adhesive to the paper fabric, which is the second paper supply 20,
The adhesive strength between the second paper feed 20 and the third paper paper 30 is further improved by pressing the two-ply laminate by the first backup press roller 70 to increase the compressive force of the heated laminate roller 123. make it,
The adhesive strength between the second paper feed 20 and the third paper paper 30 is further improved by pressing the three-ply laminate by the first backup press roller 70 to increase the compressive force of the heated laminate roller 223. make it,
A larger amount of solvent-free adhesive compared to the same rotation speed is applied to the paper fabric by using a fine collection groove 90 for collecting solvent-free adhesive on the surface of the rotary roller (R2), and the second paper feed 20 It is characterized in that the adhesion of the fabric is further improved,
The first lamination unit 100 for manufacturing a 2-ply laminate by laminating the second paper 20 with the first paper feed 10, and then the 2-ply laminate made in the first lamination unit 100 The second lamination unit 200 for producing a 3-ply laminated product by laminating the third paper feed 30 is sequentially executed at the same location,
The first paper feed transfer unit 110 in the first lamination process has the same configuration as the third paper feed transfer unit 210 in the second lamination process, and the two-layer lamination unit 120 in the first lamination process It is composed of the same configuration as the 3-ply laminating unit 220 in the second laminating process, and the second laminating process is executed after the first laminating process in one wrapping paper manufacturing device to manufacture the food wrapping paper 1, which is the three-ply laminated product. By doing so, a solvent-free type eco-friendly wrapping paper manufacturing method in which the overall configuration of the wrapping paper manufacturing apparatus is simple and the production cost is reduced. A non-solvent type eco-friendly wrapping paper manufactured by the non-solvent type eco-friendly wrapping paper manufacturing apparatus according to claim 1,
Using a non-solvent adhesive, after laminating the second paper 20 of the paper fabric to the first paper 10 of the biodegradable polymer fabric to prepare a two-ply laminate, the biodegradable polymer to the paper fabric of the two-ply laminate Non-solvent type eco-friendly wrapping paper, characterized in that it is made of a three-ply laminated material by laminating the third paper (30) of the fabric. A non-solvent type eco-friendly wrapping paper manufactured by the manufacturing method according to claim 5,
Using a non-solvent adhesive, after laminating the second paper 20 of the paper fabric to the first paper 10 of the biodegradable polymer fabric to prepare a two-ply laminate, the biodegradable polymer to the paper fabric of the two-ply laminate Non-solvent type eco-friendly wrapping paper, characterized in that it is made of a three-ply laminated material by laminating the third paper (30) of the fabric. According to claim 6 or 7,
The solvent-free adhesive is 4,4'-methylene based on 100 parts by weight of polyurethane prepolymer or inomer type polyurethane having an ionic functional group in order to have sufficient adhesive strength according to the lamination of paper fabric and biodegradable polymer fabric. A composition in which 15 to 30 parts by weight of diphenyl diisocyanate [4,4'-methylenediphenyl diisocyanate] and 0.5 to 3 parts by weight of o-(p-isocyanatobenzyl)phenyl isocyanate [o-(p-Isocyanatobenzyl)phenyl isocyanate] are mixed. Non-solvent type eco-friendly wrapping paper, characterized in that having.

Images