Printing method for packing of hygienic band and the packing material of hygienic band

专利摘要:
PURPOSE: A method of printing on nonwoven fabric for sanitary pad package is provided to use nonwoven fabric of low cost and low average weight as a packaging material and print on the nonwoven fabric at low cost. CONSTITUTION: A certain pattern is printed on a nonwoven fabric by gravure printing or flexographic printing method. First, a printing ink blocking film is formed on one face of a nonwoven fabric by extruding and laminating a film having the average weight of 20g/m¬2 made of polymer with a melting point lower than 200 deg.C on one face of the non-woven fabric for printing having the average weight of 3-25g/m¬2. Then, the pattern is printed on the surface of the nonwoven fabric having the blocking film by gravure printing or flexographic printing method.
公开号:KR20030013765A
申请号:KR1020010047947
申请日:2001-08-09
公开日:2003-02-15
发明作者:심재헌；이수영
申请人:주식회사 한진피앤씨；
IPC主号:

专利说明:

Printing method of sanitary napkin packaging nonwoven fabric and sanitary napkin packaging material {PRINTING METHOD FOR PACKING OF HYGIENIC BAND AND THE PACKING MATERIAL OF HYGIENIC BAND}
[1] The present invention relates to a method for printing a nonwoven fabric for packaging and a sanitary napkin packaging material.
[2] In recent years, nonwoven fabrics are preferred instead of polyethylene film as a single packaging material for disposable sanitary napkins.
[3] Nonwoven fabrics have a soft, elegant appearance and have the advantage of providing a good image to sanitary napkin buyers.
[4] The printing content applied to the packaging material of disposable sanitary napkins is generally a brand name, a manufacturer, a usage method or other patterns as in other products.
[5] If the nonwoven fabric is used as a packaging material as described above, the nonwoven fabric should be printed on one side of the nonwoven fabric, but the printing of the nonwoven fabric surface will be subject to various restrictions compared to plastic films such as polyethylene films.
[6] The biggest problem in the printing of nonwovens arises from the nature of the nonwovens absorbing the printing ink.
[7] Specifically, in the printing of nonwoven fabric, a nonwoven fabric is supplied between a lower printing roll to which a printed copper plate or a printing rubber plate is attached and an upper pressure roll to transfer the printing ink to the nonwoven surface according to a printing pattern in the printing roll. In the printing process, when a suitable amount of printing ink is transferred to one side of the nonwoven fabric, a good print quality is obtained. However, in the printing process, the printing ink is often transmitted through the nonwoven fabric to the pressure roll of the opposite side of the printing roll. As such, when the printing ink penetrates the nonwoven fabric, the printing ink is dizzyly distributed on both sides of the nonwoven fabric, and thus the printing ink cannot be used as a packaging material of the product.
[8] In the conventional nonwoven fabric printing, nonwoven fabric printing is performed under the following conditions in order to prevent the printing ink from penetrating the nonwoven fabric as described above.
[9] First, use a non-woven fabric having a dense basis weight of more than 30g / ㎡.
[10] Second, an expensive printing press (eg, non-woven printing presses, which are not produced domestically, uses a foreign-made flexographic printing apparatus) capable of precisely controlling printing ink is used.
[11] Third, increase the viscosity of the printing ink to weaken the penetration force, use a printing ink that quickly solidifies.
[12] The above printing conditions cannot be printed on low-cost nonwoven fabrics with low basis weight and density,
[13] The use of high-end printing equipment and high-quality printing ink increases the cost of printing equipment and printing costs,
[14] Even if you see the printing result, the high-density quick-drying printing ink is cured between the nonwoven piles, resulting in the fatal result of losing the soft feel of the nonwoven fabric.
[15] In addition, in the packaging process of the continuous disposable sanitary napkins, there was a problem in that the hard print ink debris.
[16] In addition, if you look at the packaging structure of the conventional disposable sanitary napkins, the disposable sanitary napkins are individually packaged as a packaging bag, and when the packaging bag is opened and the sanitary napkin is taken out, a hot melt adhesive is applied to one side of the sanitary napkin and the silicone is coated to protect the hot melt. The release paper is covered. If you use the sanitary napkin from the bag, you will need to remove the release paper and use it according to the usage.
[17] Disposable sanitary napkins as above will be discarded by separating the packaging bag and the release paper from the sanitary napkin and use only sanitary napkins, high disposal rate of resources had an uneconomical disadvantage.
[18] SUMMARY OF THE INVENTION An object of the present invention is to propose a printing method of a nonwoven fabric for sanitary napkin packaging, which can use a low-cost, low basis weight nonwoven fabric as a packaging material and can print on a nonwoven fabric at a low cost.
[19] An object of the present invention is to propose a printing method of a nonwoven fabric for sanitary napkin packaging in which a soft feel of the nonwoven fabric is preserved even after printing.
[20] SUMMARY OF THE INVENTION An object of the present invention is to provide a sanitary napkin packaging material which is capable of printing the low-cost low basis weight nonwoven fabric, and at the same time preserves the soft texture of the nonwoven fabric after printing.
[21] An object of the present invention is to provide a sanitary napkin packaging material that can save resources by omitting the use of hot melt protective release paper when packaging sanitary napkins.
[22] The present invention attaches a printing ink barrier to one surface of the nonwoven fabric so that the printing ink does not penetrate the nonwoven fabric when the nonwoven fabric is printed.
[23] The barrier film is laminated by extrusion lamination of a plastic film on a nonwoven fabric.
[24] In the present invention, the polyethylene-based film is laminated and laminated on one surface of the nonwoven fabric as a printing ink barrier film by supplying and pressing the nonwoven fabric to the cooling roll of the film while extruding the polyethylene-based film.
[25] A pattern necessary as a packaging material is printed on a nonwoven fabric laminated with a printing ink barrier film for use as a sanitary napkin packaging material.
[26] The nonwoven printing used a low cost gravure printing ink and printed a pattern required as a sanitary napkin packaging material by printing with a low cost gravure printing equipment.
[27] As a result of the printing, it was possible to obtain a nonwoven printed matter of a clean printing quality, and at the same time it was possible to preserve the soft texture of the nonwoven in a circular shape.
[28] The plastic film laminated to the nonwoven fabric ensures that the printing quality of the nonwoven fabric is kept in the best state by reliably blocking the printing ink from being transferred to the pressure roll during the gravure printing, and at the same time, the printing film of the nonwoven fabric is transferred to the pressure roll. Printing defects are fundamentally eliminated.
[29] Of course, in the present invention, instead of gravure printing, you may print on a nonwoven fabric using a film flexographic printing apparatus.
[30] According to the present invention, by laminating the printing ink barrier film, the basis weight of the nonwoven fabric can be lowered without depending on the printing conditions.
[31] Since the price of the nonwoven fabric is generally 2.5 times the price of the polyolefin polymer, it is to provide a factor of atomic reduction as a sanitary napkin packaging agent by lowering the basis weight of the nonwoven fabric and laminating the printing ink barrier film in the present invention.
[32] In the present invention, a low-cost low basis weight nonwoven fabric having a basis weight of 3 to 15 g / m 2 is suitable for printing with a packaging material of a sanitary napkin. In the present invention, even if the thickness of the nonwoven fabric is low or the density of the nonwoven fabric is low, a clean printing quality is maintained as the sanitary napkin packaging material. However, in the present invention, the sanitary napkin packaging nonwoven fabric laminated with the plastic film may be applied to a nonwoven fabric having a basis weight of 3 to 50 g / m 2.
[33] The present invention extends the use of the plastic film laminated on one side of the nonwoven fabric, and can be used for the use of the release paper for protecting the hot melt adhesive applied to one side of the sanitary napkin when packaging the sanitary napkin.
[34] In order to expand the use of the film laminated to the nonwoven fabric as described above, by forming a silicone coating layer on the plastic film on one side of the nonwoven fabric, and by attaching a hot melt adhesive to the coating surface of the film, it is possible to exclude the use of a separate release paper. It is.
[35] In general, when the silicone coating film is formed on the thin film plastic film and attached to the top of the hot melt, thermal deformation of the film is accompanied, but in the present invention, when the silicon coating layer is applied to the plastic film laminated to the nonwoven fabric, No problem occurs.
[36] That is, the hot melt protective release paper for sanitary napkin is prepared by forming a silicone coating layer film on a polyolefin-based film, the silicone coating process is applied to the film with a coating roll, the coating liquid is dried at a high temperature of at least 80 ℃ in a drying oven. At this time, deformation occurs in the film. After the coating film is formed in this way, it is appropriately cut and adhered to the hot melt top of the disposable sanitary napkin. Immediately after the hot melt is applied to the sanitary napkin, the release paper is attached to the hot hot melt so that the polyolefin-based film is deformed once again by melting heat of the hot melt adhesive. To lose.
[37] On the other hand, the plastic film laminated to the nonwoven fabric of the present invention is to prevent the thermal deformation of the plastic film during the process of applying and drying the silicone coating liquid on the plastic film due to the heat resistance and the supporting force of the nonwoven fabric, the hot hot melt of the sanitary napkin Similarly, the thin film film does not cry or crumple due to the heat resistance and the support of the nonwoven fabric, thereby minimizing the amount of defective products due to thermal deformation during sanitary napkin packaging.
[38] As described above, the present invention may exclude the use of a hot melt protective release paper by forming a silicone coating layer on the nonwoven laminated film and attaching a hot melt sanitary napkin to the silicone coating layer, thereby allowing the consumer to easily use the product. And waste is easier to handle.
[39] The present invention will be described again by dividing the process as follows.
[40] 1. Extrusion Lamination of Nonwoven Fabric
[41] A) Non-woven fabric: Polypropylene spunbond nonwoven fabric and polypropylene thermal bond nonwoven fabric are mainly used. As a nonwoven fabric with a high density of piles, a three-layer nonwoven fabric such as spunbond / meltblown / spunbond is used using polypropylene as a raw material.
[42] B) Material used for extrusion lamination
[43] The polymer etc. which copolymerized the monomer which has a polar group to a polyolefin polymer and an olefin monomer are used. Examples include polyethylene, polypropylene, ethylene vinyl acetate (EVA), and the like.
[44] C) To add color to the film, mix TiO ₂ or other pigments in the resin.
[45] D) Extrusion Lamination Method
[46] Extrusion lamination supplies a non-woven fabric to a cooling roll while extruding a polyolefin-based film and presses it to supply a non-woven fabric to a molten film to be laminated.
[47] 2. How to print
[48] In the printing method of the nonwoven fabric of the present invention by the gravure printing method, a printing copper plate is provided on a printing roll driven by being connected to a rubber pressure roll, and the printing ink in the container is brought into contact with the lower end of the printing roll to supply the printing ink to the printing roll. Uniformly disperse the printing ink of the printing roll by contacting the doctor blade, supply the nonwoven fabric laminated with the plastic film between the pressing roll and the printing roll, and press the nonwoven fabric to the printing roll with a rubber pressure roll to print the pattern of copper plate on the nonwoven fabric. .
[49] In the printing, the printing ink used was a gravure printing ink (manufacturer-Daehan Ink Co., Ltd., NEWSKY BLUE) printed on a polyethylene film.
[50] 3.silicone coating
[51] The nonwoven laminated film was supplied between the pressure roll and the coating roll of the three-stage roll consisting of the pressure roll, the coating roll, and the coating liquid feed dispersion roll so that the silicone coating liquid in the container was applied to the entire surface of the film through the pressure roll and the coating roll. In the above process, the nonwoven fabric film coated with the silicone liquid is passed through an oven at least 80 ° C. or more to fix the silicone coating film.
[52] The silicone coating liquid used was a silicone liquid currently used for release paper for sanitary napkins.
[53] Example 1:
[54] Low-density polypropylene was extruded to 15g / m2 of polypropylene spongebond nonwoven fabric in the extruder at a melt temperature of 290 ° C, and then 10g / m2 film was formed through T-die and pressed at a pressure of 6kg / cm2 on a cooling roll. After lamination, a blue checkered pattern was printed on the nonwoven fabric to be 85% of the print area.
[55] The printing ink was diluted with 100 g of Nusukai Blue, which is used for polyethylene film of Daehan Ink Co., Ltd. at a rate of 50 g for ink.
[56] The solid ink distribution amount after printing was 1.9 g / m 2.
[57] Example 2:
[58] After the printing operation of Example 1 coated the silicone liquid used for the release paper on the film surface through a three-stage coating roll and dried by passing through a drying oven at 115 ℃ and after drying the silicone liquid to 0.8g / ㎡.
[59] As the silicone liquid used, a mixture of 33 g of Dow Corning's trade name 7900 silicon, 33 g of water, 33 g of ethanol, and 3 g of Dow Corning's silicon catalyst 7924 (trade name) was used.
[60] These were individually packaged without the use of release paper in disposable sanitary napkins.
[61] The products of Example 1 were individually selected for comparison and printed individually packaged products printed on a commercially available 35 g / m 2 nonwoven fabric. As a result of the comparison, it was confirmed that the texture of the inventive product preserved the soft texture of the nonwoven fabric was excellent.
[62] In addition, the nonwoven sanitary napkin packaging material of Example 1 was confirmed that the basis weight of the nonwoven fabric is low and the manufacturing cost of the packaging material is reduced by using a low cost printing ink and a low cost printing facility.
[63] When the printed surface of Example 1 was scratched with a fingernail, the ink was not scratched.
[64] However, compared to the product, the ink printed on the nonwoven fabric was scratched with nails, and it was found that a printing ink having a high viscosity was used, and the printing film was thickly formed.
[65] The product of Example 2 and the random comparison product were provided to random consumers and the convenience was heard.
[66] According to random consumer response, the printing condition of disposable packaging material of the present invention is high quality, the flexibility of nonwoven fabric is preserved on the printing surface of the packaging material of the invention, it is convenient because it does not peel off the release paper when used, and the release paper is omitted so that it is easy to dispose of the waste after use. I could hear your opinion.
[67] As described above, the present invention provides a printing method of a nonwoven fabric for sanitary napkin packaging that can use a low-cost low basis weight nonwoven fabric as a packaging material, and can print on a nonwoven fabric at a low cost, and a nonwoven fabric for sanitary napkin packaging in which the soft touch of the nonwoven fabric is preserved even after printing. In addition, the present invention provides a sanitary napkin packaging material which is capable of printing a low-cost, low basis weight nonwoven fabric and at the same time preserves the soft feel of the nonwoven fabric after printing, and excludes the use of a hot-melt protective release paper when packaging a sanitary napkin. It is to provide a sanitary napkin packaging material.

权利要求:
Claims (3)
[1" claim-type="Currently amended] In printing any pattern by gravure or flexo printing method on nonwoven fabric,
Melting point on one side of printing nonwoven fabric with basis weight of 3 ~ 25g / ㎡ Extrusion lamination of polymer below 20g / ㎡ with basis weight of polymer below 200 ℃ to form printing ink barrier film on one side of nonwoven fabric, and gravure or A method of printing a sanitary napkin packaging nonwoven fabric, which comprises a process of printing a pattern according to a flexographic printing method.
[2" claim-type="Currently amended] In the sanitary napkin packaging material by printing a pattern on a nonwoven fabric,
Melting point on one side of printing nonwoven fabric with basis weight of 3 ~ 25g / ㎡ Extrusion lamination of polymer below 20g / ㎡ with basis weight of polymer below 200 ℃ to form printing ink barrier film on one side of nonwoven fabric, and gravure or Sanitary napkin packaging material manufactured by printing a pattern according to the flexographic printing method.
[3" claim-type="Currently amended] The packaging material for disposable sanitary napkin packaging according to claim 2, which is prepared by forming a silicone coating layer corresponding to a hot melt adhesive portion of a sanitary napkin on a plastic barrier film laminated on one surface of the nonwoven fabric.

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同族专利:

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引用文献:

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公开号 | 申请日 | 公开日 | 申请人 | 专利标题

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法律状态:
2001-08-09|Application filed by 주식회사 한진피앤씨

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2001-08-09|Priority to KR1020010047947A

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2003-02-15|Publication of KR20030013765A

优先权:

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申请号 | 申请日 | 专利标题

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KR1020010047947A|KR20030013765A|2001-08-09|2001-08-09|Printing method for packing of hygienic band and the packing material of hygienic band|