JP2006182373A - Processed paper for paper container, blank, carton, and method for manufacturing processed paper for paper container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a processed paper for a paper container, a blank, a carton, and a method for manufacturing the processed paper for the paper container capable of solving a problem in which adhesion of paste coating of a sack affixing and hot-melt affixing is not sufficient due to oil resistance on a surface of the oil-resistant paper container, the processing properties are poor, and having a filling layer between a base material and an oil-resistant layer wherein a packaging box for selling and storing oily foods such as pizza, fried chicken and fried potato fresh from the oven, and oil-stuck industrial products is formed by folding one paper (a blank) unnecessary for adhesion, and a three-dimensional shape is maintained by a means such as filling. <P>SOLUTION: The processed paper for the paper container has the filling layer between the base material and the oil-resistant layer, and the oil-resistant layer is formed in a pattern in the processed paper for the paper container. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  INDUSTRIAL APPLICABILITY The present invention can be used as an outer box and an inner box for selling and storing oily foods such as lacking herring and oily industrial products in addition to dairy products such as butter and cheese.

  Conventionally, a technique such as Patent Document 1 has been disclosed as a paper container subjected to oil-proof processing. In this technology, corrugated cardboard packaging boxes for selling and storing oily foods such as freshly baked pizza, fried chicken, and fried potatoes, and oily industrial products are known.

  However, the paper container subjected to such oil resistance processing is inferior in processing suitability due to the oil resistance of the surface, and the adhesiveness of the sack pasting paste and the hot melt pasting is not sufficient. Therefore, the packaging box for selling and storing oily food such as freshly baked pizza, fried chicken, and fries, and industrial products with oil attached to it is a piece of paper (blank) that does not require adhesion. Using a fold-processed material, the solid shape was maintained by means such as fitting.

The patent literature is as follows.
Japanese Patent Laid-Open No. 9-290867 JP 7-70983 A

  The present invention has been made to satisfy the above-mentioned demands, and in spite of oil resistance, adhesion of adhesives and hot-melt resins to processed paper substrates for paper containers even in sack pasting and hot melt pasting It is an object of the present invention to provide a paper container processed paper, blanks, cartons, and a method for manufacturing a paper container processed paper that can be easily manufactured without deterioration of the properties and can maintain the adhesion. .

  In order to achieve the above object, the invention according to claim 1 provides a processed paper for paper containers, wherein a sealing layer is formed between a base material and an oil resistant layer.

  As a result, in addition to eliminating the resource waste of the oil proofing agent, it is possible to contribute to the uniformity and stability of the coating, and thus to provide an inexpensive processed paper for paper containers.

  The invention according to claim 2 provides the processed paper for paper containers according to claim 1, wherein the oil-resistant layer is provided in a pattern.

  As a result, despite the oil resistance, even in sack pasting and hot melt pasting, the adhesive and hot melt resin can be easily manufactured without lowering the adhesion to the processed paper substrate for paper containers. In addition, it is possible to provide a processed paper for paper containers that can maintain the adhesion.

The invention according to claim 3 provides the processed paper for paper containers according to claim 2, wherein the sealing layer is provided in the same pattern as the oil-resistant layer.

  As a result, in addition to eliminating the waste of resources of the sealing layer, it is possible to contribute to the uniformity and stability of the coating, and to provide an inexpensive processed paper for paper containers.

  The invention according to claim 4 provides the processed paper for paper containers according to claim 2 or 3, wherein the pattern is a pattern from which an adhesive application region is removed.

  This makes it possible to use adhesives and hot melt resins for paper containers even when sack and hot melt applications are used, even when the oil resistance of the adhesive or hot melt resin is low. Thus, it is possible to provide a processed paper for paper containers that can be easily manufactured without reducing the adhesion to the paper container and that can maintain the adhesion.

  According to a fifth aspect of the present invention, there is provided a paper container processed paper characterized in that the oil-resistant layer according to any one of the first to fourth aspects comprises a non-fluorinated oil-resistant agent.

  As a result, it is possible to provide a processed paper for paper containers that is preferable in terms of environment and hygiene.

  The invention according to claim 6 provides blanks punched into a predetermined shape using the paper for machined paper according to any one of claims 1 to 5.

  This makes it easy to make boxes without sacrificing the adhesiveness of the adhesive or hot melt resin to the processed paper substrate for paper containers, even though it is oil resistant. In addition, it is possible to provide blanks that can maintain the adhesion.

  The invention according to claim 7 provides a carton in which the blanks according to claim 6 are assembled.

  As a result, it is possible to provide a carton that is firmly boxed despite having oil resistance.

  The invention according to claim 8 provides a method for producing processed paper for paper containers, characterized in that a sealing layer is applied to the surface of the substrate in a pattern, and then an oil-proofing agent is applied in the same pattern. is there.

  As a result, it is possible to provide a method for producing processed paper for paper containers that can sell and store oil-based contents, and that can be boxed instead of being assembled.

  The invention according to claim 9 provides a process for producing processed paper for paper containers, characterized in that the oilproof agent according to claim 8 comprises a non-fluorine-based oilproof agent.

  As a result, it is possible to provide a method for producing processed paper for paper containers that is preferable in terms of environment and hygiene.

  The invention according to claim 10 provides the method for producing paper for machined paper according to claim 8 or 9, wherein the pattern is a pattern from which an adhesive application region is removed.

  This makes it possible to use adhesives and hot melt resins for paper containers even when sack and hot melt applications are used, even when the oil resistance of the adhesive or hot melt resin is low. Thus, it is possible to provide a method for producing a processed paper for paper containers that can be easily manufactured without lowering the adhesion to the paper container and that can maintain the adhesion.

  The invention according to claim 11 provides a method for producing a processed paper for paper containers according to claim 8, 9 or 10, wherein a sealing agent is applied to the surface of the substrate, and then an oil-proofing agent is applied. To do.

  As a result, in addition to eliminating the resource waste of the oil proofing agent, it is possible to provide a method for producing processed paper for paper containers that contributes to the uniformity and stability of coating and thus is inexpensive.

  According to the present invention, despite having oil resistance, even in sack pasting or hot melt pasting, the adhesive or hot melt resin can be easily manufactured without lowering the adhesion to the processed paper substrate for paper containers. In addition, it is possible to provide a paper container processed paper, blanks, cartons, and a method for manufacturing a paper container processed paper that can maintain the adhesion.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a paper container processed paper and a method for manufacturing the same as an embodiment of the present invention will be described below with reference to the drawings. Fig. 1 shows that, despite the proposed oil resistance, even in sack pasting and hot melt pasting, the adhesiveness of the adhesive and hot melt resin to the processed paper substrate for paper containers is not reduced, and the box can be easily manufactured. A paperboard processed paper that can be maintained and that can maintain its adhesion is shown.

  First, the sealing layer 2 is provided in a pattern on one surface of the processed paper substrate 1 for paper containers, and the oil resistant layer 3 is provided on the sealing layer 2. Moreover, the processed paper for paper containers is manufactured by providing the printing layer 4 in the other surface.

  In this case, it is preferable to use a water-resistant paper container processed paper base material. In general, when oil resistance is required, water resistance is often required at the same time. Moreover, it is because the processed paper base material for water-resistant paper containers generally has good smoothness, and it is possible to reduce the amount of the sealing agent. However, it is of course not limited to such cases where water resistance is completely unnecessary. If other functions such as oxygen barrier properties are required, appropriate special paper should be used. It is also possible to use it.

In addition, the suitable material of the sealing layer varies depending on the processed paper base material for paper containers and the oil-resistant agent. In general, an ink medium and a reducer are preferable from the viewpoint of printability, and UV curing is preferable. Any material can be used as long as it has a sealing effect in addition to the property (UV) ink and oil-based ink. The coating amount is appropriately 1 to 3 g / m ² when the above-mentioned processed paper base material for paper containers is used. If it is 1 g / m ² or less, sufficient oil resistance cannot be exhibited, and if it is 3 g / m ² or more, the abrasion resistance is poor. It should be noted that if other conditions such as those other than the following oil-proofing agents are used, the appropriate coating amount may vary, and if the above disadvantages do not hinder, it may be outside the above range. It is.

  The pattern of the sealing layer can be provided on the entire surface due to its properties, but it is practical to provide the pattern only on the portion to which oil resistance is imparted for cost and other reasons.

The oil-resistant layer is preferably polyethylene terephthalate, acrylic resin, or the like, but other oil-resistant materials may naturally be used. The coating amount is suitably 1 to 3 g / m ² when the above-mentioned processed paper base material for paper containers and the sealing layer are used. This is because if it is 1 g / m ² or less, sufficient oil resistance cannot be exhibited, and if it is 3 g / m ² or more, there is a problem of blocking during production. In addition, if other conditions, for example, other than the above materials are used, the appropriate coating amount may fluctuate. is there.

  The relationship between the pattern of the sealing layer and the oil-resistant layer may generally be the same pattern, but does not have to be exactly the same pattern. If the oil-resistant agent is sufficiently applied where oil resistance is required, and the oil-resistant agent is not provided in parts where oil resistance is not needed, there are parts where only the oil-resistant agent is present in the boundary region and parts where the sealing layer is present. This is because even if it is formed a little, the overall performance is not hindered.

  Areas where oil resistance is not provided are areas that interfere with oil resistance, such as adhesive application areas, functions that conflict with various oil resistance such as adhesion to other members, application, and addition of other functions. This is a required area, and an adhesive application area is a typical one. Therefore, oil resistance is not required, and areas that are not used for adhesive application may or may not be provided with oil resistance, but it is better not to provide oil resistance in terms of cost. preferable.

  Furthermore, the printing layer is sufficient for normal printing, but when there is a portion used for box making, an ink that does not deteriorate the adhesion performance is required.

  Such processed paper for paper containers is sent to a box making process such as sack sticking. That is, after performing the blanking process, an adhesive can be provided in the adhesive application region and further boxed. The completed oil-resistant paper box is a paper box with complete adhesion, and even when oil-based contents such as butter and cheese are put into the contents, the oil resistance can be exhibited.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a paper container processed paper and a method for manufacturing the same as an embodiment of the present invention will be described below with reference to the drawings. Fig. 1 shows that, despite the proposed oil resistance, even in sack pasting and hot melt pasting, the adhesiveness of the adhesive and hot melt resin to the processed paper substrate for paper containers is not reduced, and the box can be easily manufactured. A paperboard processed paper that can be maintained and that can maintain its adhesion is shown.

First, printing layer 4 is provided on one side of 260 g / m ² of white paperboard, which is processed paper substrate 1 for paper containers, by UV ink printing, UV irradiation with a UV lamp and drying by sending hot air, and UV ink on the other side. By providing a sealing layer 2 in a pattern by printing with a medium, UV irradiation by a UV lamp and drying by sending hot air, and providing an oil-resistant layer 3 by printing with an oil-resistant agent on the sealing layer 2 and drying by sending hot air, Paper for processed paper (table whiteness 82 ± 3%, table smoothness 8.0 ± 4.0 kPa (sec), stiffness 9.3 mNm (longitudinal direction), stiffness 3.8 mNm (lateral direction), bending strength 3.98N (non-ruled line portion, vertical direction), bending strength 2.49N (non-ruled line portion, horizontal direction), bending strength 1.74N (ruled line portion, vertical direction), bending strength 1.56N (ruled line portion) , Lateral direction), table slip angle 16 ) It is produced.

  Such processed paper for paper containers is sent to the box making process. That is, after the blanking process is performed, an adhesive is provided in the adhesive application region 6 to complete blanks as shown in FIG. The blanks can be folded and further boxed using the adhesive application area of the blanks to produce a carton as shown in FIG. The finished oil-resistant carton was a carton with perfect adhesion.

  Even when oily contents such as butter and cheese were put in such a carton, the oil resistance could be exhibited.

  In addition, when a mixed liquid of toluene and n-heptane (mixing ratio 1: 1) was dropped from the processed paper for paper containers and the soaking condition was visually observed, no soaking was observed in the oil-resistant part. . On the other hand, a slight penetration was observed in the part not subjected to oil-proofing.

  Similarly, 10 g of commercially available butter was cut from the processed paper for paper containers, and the state of soaking was visually observed in a state where it was placed at 35 ° C. for 30 minutes. As a result, no soaking was observed in the oil-resistant portion. On the other hand, a slight penetration was observed in the part not subjected to oil-proofing.

  In addition, when water droplets were dropped from the processed paper for paper containers and the soaking state was visually observed, no soaking was observed.

  Similarly, when this paper machined paper was immersed in water, no soaking was observed.

  Further, no fluorine component was found, and no odor was found as a result of the sensory test.

  The present invention relates to processed paper for paper containers, blanks, cartons, and processing for paper containers for selling and storing oily foods such as butter and herring, as well as industrial products with oil attached, in addition to dairy products such as butter and cheese. It can be applied to a paper manufacturing method.

It is a partial expanded sectional view of the processed paper for paper containers in this invention. It is a top view of the blank using the processed paper for paper containers in this invention. It is a perspective view of a carton using processed paper for paper containers in the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Paper container processed paper base material 2 ... Sealing layer 3 ... Oil-resistant layer 4 ... Print layer 5 ... Oil-resistant processing area 6 ... Adhesive application area

Claims (10)

  A processed paper for paper containers, wherein a sealing layer is formed between the base material and the oil-resistant layer.   2. The processed paper for paper containers according to claim 1, wherein the oil-resistant layer is applied in a pattern.   The paperboard processed paper according to claim 2, wherein the sealing layer is provided in the same pattern as the oil-resistant layer.   The paperboard processed paper according to claim 2 or 3, wherein the pattern is a pattern from which an adhesive application region is removed.   A paperboard processed paper, wherein the oil-resistant layer according to any one of claims 1 to 4 comprises a non-fluorinated oil-resistant agent.   Blanks punched into a predetermined shape using the paper for a paper container according to any one of claims 1 to 5.   A carton in which the blanks according to claim 6 are assembled.   A process for producing a paper for processing paper containers, characterized in that a sealing layer is applied in a pattern on the surface of a substrate, and then an oil-proofing agent is applied in the same pattern.   A method for producing a processed paper for paper containers, wherein the oil proofing agent according to claim 8 comprises a non-fluorine type oil proofing agent.   The method for producing a processed paper for a paper container according to claim 8 or 9, wherein the pattern is a pattern from which an adhesive application region is removed.

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