JP2006182374A - 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, wherein adhesion of an adhesive and a hot-melt resin to a base material of the processed paper for the paper container is not degraded even in sack affixing and hot-melt affixing irrespective of its oil resistance, a carton is easily manufactured, its adhesion is maintained, and a problem is solved in which, although filling can be performed in the base material, not only a filling step is increased but also a filling agent is required to cause an economical problem. <P>SOLUTION: In the processed paper for the paper container, the blank, the carton, and the method for manufacturing the processed paper for the paper container, an oil-resistant treatment is performed on the surface of the base material having a smoothness of ≤50 kPa. <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 this case, it may be possible to seal the base material in advance in order to satisfy such requirements. However, not only the number of sealing steps is increased, but a sealing agent is required and there is a problem in terms of economy.

  In order to achieve the above object, the invention according to claim 1 provides a processed paper for paper containers characterized in that an oil-proofing process is applied to the surface of a base material having a smoothness of 50 kPa or less.

  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.

  According to a second aspect of the present invention, there is provided a paper container processed paper characterized in that the oil-resistant layer according to the first aspect 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 3 provides the processed paper for paper containers according to claim 1 or 2, 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 4 provides the processed paper for paper containers according to claim 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.

  The invention according to claim 5 provides blanks punched into a predetermined shape using the paper for machined paper according to any one of claims 1 to 4.

  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 6 provides a carton in which the blanks according to claim 5 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 7 provides a method for producing processed paper for paper containers, characterized in that an oil resistance agent is applied in a pattern on the surface of a substrate having a smoothness of 50 kPa or less.

  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 8 provides the method for producing processed paper for paper containers according to claim 7, 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 9 provides the method for producing processed paper for paper containers according to claim 7 or 8, characterized in that the oil-proofing agent comprises a non-fluorine-based oil-proofing 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.

  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 oil resistant layer 3 is provided on one surface of the processed paper substrate 1 for paper containers. 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. However, it is of course not limited to such cases where water resistance is completely unnecessary, and other functions such as safety, hygiene, rigidity, and whiteness are required. It is also possible to use corresponding special paper.

  The smoothness in this case is the smoothness by the smooth star method defined in the paper and pulp test method No5-1 of the JAPAN TAPPI standard. If the smoothness is 70 kPa or less, the coating film thickness becomes uniform, and paper without any sealing can be used as it is.

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. 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 inferior. In addition, if other conditions, for example, other than the above materials are used, the appropriate coating amount may fluctuate. is there.

  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, 260 g / m ^{2 of} white paperboard, which is a processed paper base material 1 for paper containers (smoothness 8.0 ± 4.0 kPa, 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, The printing layer 4 is provided on one side of the horizontal direction)) by printing with UV ink, UV irradiation with a UV lamp and drying by sending hot air, and the oil-resistant layer 3 is provided on the other side by printing with oil-resistant agent and drying by sending hot air. By providing the paper, processed paper for paper containers (front whiteness 82 ± 3%, front slip angle 16 °) is produced.

  Such processed paper for paper containers is sent to the box making process. That is, after performing the blanking process, an adhesive can be provided in the adhesive application region and further boxed. The finished oil-resistant carton was a carton with perfect adhesion.

  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 3 ... Oil-resistant layer 4 ... Print layer 5 ... Oil-resistant processing area 6 ... Adhesive application area

Claims (9)

  A processed paper for paper containers, characterized in that an oil-resistant layer is applied to the surface of a substrate having a smoothness of 50 kPa or less.   The paper for paper containers, wherein the oil-resistant layer according to claim 1 is made of a non-fluorinated oil-resistant agent.   The processed paper for paper containers according to claim 1 or 2, wherein the oil-resistant layer is applied in a pattern.   The paperboard processed paper according to claim 3, wherein the pattern is a pattern from which an adhesive application region is removed.   Blanks punched into a predetermined shape using the paper for machined paper according to any one of claims 1 to 4.   A carton in which the blanks according to claim 5 are assembled.   A method for producing a processed paper for paper containers, characterized in that an oil-proofing agent is applied in a pattern on the surface of a substrate having a smoothness of 50 kPa or less.   8. The method for producing a paperboard processed paper according to claim 7, wherein the pattern is a pattern from which an adhesive application region is removed.   The method for producing a paper for a paper container according to claim 7 or 8, wherein the oil resistant agent comprises a non-fluorinated oil resistant agent.

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