Description

METHOD FOR MANUFACTURING PACKING PAPER AND PACKING PAPER MANUFACTURED BY THE SAME

Technical Field

[1] The present invention relates to a method of manufacturing a packing paper and a packing paper manufactured by the same, and in particular, to a method of manufacturing a packing paper having anti-bacteria and anti-insects functions for preventing various harmful bacteria and insects from being generated and a packing paper manufactured by the same, wherein the packing paper packs contents containing a great amount of sugar and water such as chocolate or confectionery. Background Art

[2] Typically, confectionery, chocolate, or gum is preferably manufactured and shipped with being sealed or packed by a packing paper coated with a waterproof material for enhancing its preservation, and a trademark or a logo is usually displayed on an outer surface of the packing paper.

[3] Since the chocolate and the confectionery contain a great amount of sugar, various harmful bacteria and insects (worms) are generated to be rotten or deteriorated during their circulation and keeping, so that careful attention must be paid to such chocolate and confectionery.

[4] In particular, the confectionery containing a great amount of water along with a great amount of sugar contents is apt to be rapidly rotten due to harmful insects or bacteria, and emits gases during the deterioration or rot due to the bacteria, has a high probability of being damaged due to its thin outermost layer, so that careful attention must be paid and supplied to consumers during circulation so as to prevent the confectionery from being easily deteriorated and the commercial value from being significantly reduced.

[5] Accordingly, there has been a method of using a box formed of corrugated cardboard to pack the contents to decrease the possibility of damaging the contents such as confectionery or a method of packing the contents using tissue papers or the like on a piece basis to prevent the contents from being rotten.

[6] In addition, in order to keep fresh the contents such as confectionery containing a great amount of sugar and water, a method has been used which adds a moisture adsorbent such as calcium, silica gel, and so on, between packing papers or charges the packing box with a nitrogen gas for packing. Disclosure of Invention Technical Problem

[7] However, the piece packing using the tissue paper as described above des not consider the functionality but uses a general machine-made paper so that the intensity and nature of the paper are too weak to protect the contents, a function of keeping fresh the contents is not present, and the quality of the contents such as confectionery packed by simple piece packing cannot be kept to fail to increase the product quality as much as possible.

[8] In addition, addition of separate inorganic material and chemicals for keeping the freshness or charging the nitrogen gas as described above still has a problem that the contents such as confectionery are exposed to harmful materials and the packing unit price is increased.

[9] Accordingly, an object of the present invention is to provide a method of manufacturing a packing paper for packing contents having a great amount of sugar and water such as chocolate and confectionery to prevent various harmful bacteria and insects from being generated, and a packing paper manufactured by the same. Technical Solution

[10] An aspect of the present invention provides a method of manufacturing a functional packing paper having an anti-bacteria function, the method includes: mixing 75weight% to 90weight% of gravure printing ink agent, 5weight% to 10weight% of surface active agent, and 5weight% to 15weight% of silver nano powder to form a color retention agent having an antibacterial property; mixing 20weight% to 50weight% of the color retention agent having the antibacterial property with 50weight% to 80weight% of a binder consisting of olefin, acryl, urethane or a mixture thereof to form a solid; mixing 20weight% to 40weight% of the solid with 60weight% to 80weight% of an organic solvent to form a paste; and silk screen printing the paste on an outer surface of the packing paper of which an inner surface is coated with aluminum.

[11] 100 parts by weight of an anti-insects agent consisting of a pine needle powder, an aromatic tree leaf powder, or a mixture thereof and distilled water may be added to 100 parts by weight of the color retention agent having the antibacterial property.

[12] Another aspect of the present invention provides a method of manufacturing a packing paper having an anti-insects function, the method includes: mixing 75weight% to 90weight% of gravure printing ink agent, 5weight% to 10weight% of surface active agent, and 5 weight to 15weight% of an anti-insects agent consisting of a pine needle powder, an aromatic leaf powder, or a mixture thereof and distilled water to form a color retention agent having an anti-insects property; mixing 20weight% to 50weight% of the color retention agent having the anti-insects property with 50weight% to 80weight% of a binder consisting of olefin, acryl, urethane or a mixture thereof to form

a solid; mixing 20weight% to 40weight% of the solid with 60weight% to 80weight% of an organic solvent to form a paste; and silk screen printing the paste on an outer surface of the packing paper of which an inner surface is coated with aluminum.

[13] 100 parts by weight of antibacterial silver nano powder may be added to 100 parts by weight of the color retention agent having the anti-insects property.

[14] At least one of a thermosensitive ink, a photosensitive ink, and a noctilucent ink may be added to the gravure ink printing ink agent. In addition, the organic solvent may include at least one selected from a group consisting of an alcohol-based solvent, an ether-based solvent, and an acetone-based solvent.

[15] Yet another aspect of the present invention provides a functional packing paper manufactured by the method as described above.

[16] The packing paper is preferably used for packing confectionery or chocolate.

Advantageous Effects

[17] According to the present invention, aluminum for preventing light from being transmitted is coated on an inner surface of a packing paper for packing confectionery or chocolate, and a color retention agent containing a nature-friendly antibacterial agent with anti-bacteria and anti-insects functions is coated on an outer surface of the packing paper, so that contents such as confectionery or chocolate can be prevented from being deteriorated even for a long circulation time. Best Mode for Carrying out the Invention

[18] According to the present invention, a method of manufacturing a packing paper and a packing paper manufactured by the same are provided, wherein the packing paper is formed of a material such as a paper or synthetic resin, an inner surface of the base layer of the packing paper is coated with aluminum and an outer surface of the packing paper is coated with a printing layer.

[19] A preferred aspect of the present invention provides a method of manufacturing a packing paper having anti-bacteria and anti-insects functions, the method includes: mixing 75weight% to 90weight% of gravure printing ink agent, 5weight% to 10weight% of surface active agent, and 5weight% to 15weight% of silver nano powder to form a color retention agent having an antibacterial property; mixing 20weight% to 50weight% of the color retention agent having the antibacterial property with 50weight% to 80weight% of a binder consisting of olefin, acryl, urethane or a mixture thereof to form a solid; mixing 20weight% to 40weight% of the solid with 60weight% to 80weight% of an organic solvent to form a paste; and silk screen printing the paste on an outer surface of the packing paper of which an inner surface is coated with aluminum.

[20] In addition, the color retention agent having the antibacterial property may be

replaced by an anti-insects agent consisting of a pine tree needle powder, an aromatic leaf powder, or a mixture thereof and distilled water in accordance with the present invention, and 100 parts by weight of the anti-insects agent as described above may be added to 100 parts by weight of the color retention agent having the antibacterial property.

[21] Plants usually emit various sterilizing materials for protecting their bodies against other microorganism, which is altogether referred to as phytoncide. In particular, leaves of pine tree and aromatic tree emit a great amount of phytoncide to have effective sterilizing effects. According to the present invention, the phytoncide kills bacteria and molds in the air to prevent harmful insects from being infiltrated. In addition, ingredients such as +/- catechin, -/- epicatechin, myrichitrin, and hi- nokiflavone are contained in the aromatic tree leaves to exhibit a good antioxidant effect so that foods can be prevented from being oxidized.

[22] A process of forming the color retention agent having the antibacterial property or the anti-insects property may include mixing 75weight% to 90weight% of gravure printing ink agent containing any one of a thermosensitive ink, a photosensitive ink, a noctilucent ink or a mixture thereof, 5weight% to 10weight% of surface active agent, and 5weight% to 15weight% of silver nano powder.

[23] When the lower limit goes below 75weight% of the gravure printing ink agent, colors having desired clearness cannot be obtained when a required pattern is printed using a silk screen. When the upper limit exceeds 90weight% of the gravure printing ink agent, a small amount of the surface active agent, the silver nano powder, or the anti-insects powder must be relatively used so that the desired anti-bacteria and anti-insects functions cannot be obtained. Therefore, it is preferable to use 75weight% to 90weight% of the ink agent in accordance with the present invention.

[24] In addition, The thermosensitive ink among the ink agents mentioned above acts to cause the packing paper not to be identified by making the color transparent when the temperature reaches a predetermined value or higher or acts to cause the color to be changed depending on the temperature, the photosensitive ink acts to cause the color to be shown by the sunlight and to be transparent in the dark when the packing paper is exposed to the sunlight, and the noctilucent ink acts to absorb the light to be noctilucent in the dark.

[25] In addition, the silver nano powder as the anti-bacteria and the pine tree needle powder or the aromatic tree powder as the anti-insects agent act to prevent packed contents from being rotten and to prevent harmful insects from being generated, respectively. When the lower limit of the addition goes below 5weight%, the anti- bacteria and anti-insects functions cannot effectively work. When the upper limit of the addition exceeds 15weight%, it associated cost increases or the scent of the pine tree

needle or aromatic tree permeates into the contents such as confectionery so that its own tastes may be deteriorated.

[26] The color retention agent having the anti-bacteria or anti- insects function which is mixed with the ink agent, the surface active agent, and the anti-bacteria type powder such as silver nano powder or the anti-insects type powder such as pine tree needle or aromatic tree powder having the amount as described above, is mixed with a binder consisting of olefin, acryl, urethane, or a mixture thereof to form a solid.

[27] Such a binder is formed of mainly acrylic ester copolymer having dispersibility when it is printed on the packing paper, an olefin or acryl-based binder used for fiber processing, construction material adhesion and general coating may be employed to enhance the lustering property and the adhesive property, or an urethane-based binder may be used and dispersed for enhancing the adhesive property with good dispersibility with respect to fine particles. This is properly selected depending on the use purpose or use of the packing paper used.

[28] In addition, according to the method of manufacturing the packing paper having the anti-bacteria and anti-insects functions, when the binder has the rate of no more than 50weight% in the mixed rate between the binder and the color retention agent having the anti-bacteria or anti-insects function as described above, the dispersilibity, the lustering property and the adhesive property cannot reach values desired by the present invention. When the binder has the rate exceeding 80weight%, the dispersilibity, the lustering property and the adhesive property may be enhanced, however, the amount of color retention agent used must be small for its use purpose, so that the chromaticity of the printed pattern becomes blurred when the paste is printed on the outer surface of the packing paper whose inner surface is coated with aluminum.

[29] The solid formed as described above is mixed with an organic solvent including at least one of alcohol, ether, and acetone, and then is agitated in an agitator to form a paste for coating. The agitation is carried out in a general agitator, and the solid formed by the agitation becomes the paste having a predetermined viscosity so that it is used as the coating agent.

[30] When the amount of organic solvent used is less than 60weight% or exceeds

80weight%, the paste cannot be used as the coating agent.

[31] As described above, when the coating agent on the paste is prepared , such coating agent is coated on the outer surface of the packing paper of the confectionery or chocolate. At this time, aluminum is first coated on the inner surface of the packing paper before the paste is coated. When coating the aluminum is completed, the coating agent is printed with various patterns on the outer surface of the packing paper .

[32] As well known in the art, the reason why aluminum is coated is to prevent contents such as confectionery packed by the packing paper from being rotten and deteriorated

and to prevent harmful insects from being generated due to sunlight transmission. A silk screen method is employed as a typical method of printing various patterns and characters on the outer surface of the packing paper (i.e., a surface exposed to the outside).

[33] In addition, any material in the form of sheet may be used to form the packing paper having anti-bacteria and anti-insects functions of the present invention, and a paper or a synthetic resin sheet is preferably used for the packing paper to allow thin aluminum to be coated on an inner surface of the packing paper.

[34] As described above, the packing paper of the present invention is used to pack contents such as confectionery containing a great amount of sugar and water and chocolate by a typical method so that the contents can be prevented from being rotten and deteriorated by preventing the contentions from being deteriorated and harmful bacteria or insects from being generated during a long period of keeping and circulation.