JP5272155B2 - Hot filling packaging method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To attain a packaging method capable of keeping quality, performing hot filling, molding and packaging of a product such as processed cheese showing fluidity under a heated condition and solidified by cooling. <P>SOLUTION: This process is applied with a soft packaging bag formed into a bag with a packaging material composed of a film substrate showing a heat sealing characteristic and a paper carton having either one or a plurality of air bleeding holes for use in discharging air in the box. Viscous material kept under heated and molten state is filled in the soft packaging bag and sealed. The soft packaging bag after sealing operation is inserted into the paper carton and the soft packaging bag is closely contacted along an inner shape of the paper carton to be formed into a box-shape. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a carton packaging method for foods that are fluidized in a heated state and hardened when cooled, such as processed cheese. In particular, the present invention relates to a hot filling and packaging method for cheeses that are packed and packaged in a bag in a fluid state, packed in a carton, shaped and solidified to obtain a beautiful product appearance.

  In general, in the case of processed cheese, it is made by adding butter, cream, emulsifier, etc. to several types of natural cheese, pulverizing, mixing, heating and melting and emulsifying. Among processed cheeses, commercial cartons filled with about 500g to 2kg are filled and packaged in a heated and melted state. When cooking and cutting with a knife or knife during cooking, the cut surface is a clean quadrilateral. It is cooled and solidified into a rectangular parallelepiped shape. As shown in the following document and FIG. 4, the packaging form of block-type cheese containing cartons is cheese wrapped in a cheese packaging material 1 comprising a heat-sealing film base material, and an upper lid 2 and a lower lid (body box). It is packed in a paper box called “Carton” consisting of three. The melting material filling method for the packaging material 1 is heated to about 75 to 85 ° C. in the cheese packaging material 1 folded in the lower cover (body box) 3 of the carton as shown in FIG. After a certain amount of melted cheese is filled, the remaining unfolded portion of the packaging material 1 is folded into close contact with the molten cheese. Then, the bottom cover 3 of the filled “carton” is inverted, the cheese self-weight is used to complete the heat sealing and sealing properties of the cheese packaging material, and after cooling, it is inverted again, and the top cover 2 of the “carton” is recovered. The process cheese packaging is completed.

JP-B 63-44638 Japanese Patent Publication No.57-2562 JP 2002-10771 A "Food Packaging Technology Handbook" March 1, 1988, Japan Packaging Technology Association, pages 1351-1352

As in Patent Document 1 of the prior art, a material currently used as a packaging material for process cheese is generally a cellophane or moisture-proof cellophane obtained by heating and applying a mixture of polyisobutylene, paraffin wax or the like. When this packaging material is filled with molten cheese, it can be heat-sealed only by the heat of the molten cheese, but an inversion operation is required to flatten the adhesion between the packaging materials and the cheese surface. Therefore, the operation of folding the packaging material 1 into the lower cover 3 of the “carton”, the operation of filling the packaging material 1 with cheese, the operation of folding the packaging material 1, the operation of inverting the lower cover 3 of the “carton”, and the cooling A work to be reversed later and a work to cover the upper cover 2 of the “carton” are necessary and complicated.
In this way, the conventional filling and packaging method uses a body / lid type box (C-type box) that requires four-corner sticking, folds the packaging material into the body box, puts the molten cheese in it, cools it, After that, the packaging method was complicated and inefficient in work, in which the body box was turned over and then covered with a lid. In addition, this packaging material can be heat-sealed only by the heat of the molten cheese, but the heat-sealing strength is weak, and tearing is likely to occur even with a small impact, so the sealing performance of the seal is likely to break.

  The present invention eliminates the disadvantages of the conventional packaging materials and the cumbersome work of using the “calton” of the upper lid and the lower lid, is excellent in hermetic sealing, and is easy to mold the contents. It is an object of the present invention to provide a hot filling and packaging method for foods such as processed cheese, which can be cooled while being put in a box, maintains the appearance of the product after solidification, and has good shape retention.

  In order to achieve the above object, in the present invention, a gusseted bag of food such as process cheese in a heat-melted state at 75 to 85 ° C., for example, using a packaging material made of a plastic film having heat sealing properties After filling and packing in a soft packaging bag such as a pillow bag, insert this soft packaging bag into a paper sack box with one or more air vents to exhaust the air in the box, and put food such as cheese in the box It is an invention of the hot filling packaging method which shape | molds cheese so that it may follow the shape of a paper box by cooling as it is.

  When the packaging method of the present invention is further described, a flexible packaging bag made of a packaging material comprising a heat-sealable film base material and one or a plurality of air vent holes for discharging the air in the box are provided. A first step of filling and sealing the soft packaging bag with a viscous material in a molten state, inserting the sealed soft packaging bag into the paper box, and A method for hot-filling and packing a viscous product that has fluidity in a heated state and solidifies by cooling, comprising a second step of forming a box shape by closely adhering to the inner shape of the paper box .

    In addition, the second invention is characterized in that after the second step is completed, the paper box containing the flexible packaging bag is allowed to stand at room temperature and then naturally cooled or forcedly cooled with cooling air to solidify the contents. It is the hot filling packaging method of viscous things, such as molten cheese, described in invention of Claim 1. In addition, the soft packaging bag as described in 1st or 2nd invention is a soft packaging bag with a gusset.

  Further, the present invention uses a gusseted soft packaging bag made of a packaging material comprising a heat-sealing film base material, and a paper box provided with one or a plurality of air vent holes for discharging air in the box, A first step of filling and sealing the soft packaging bag with a viscous material in a molten state; and inserting the sealed soft packaging bag into the paper box; and forming the soft packaging bag into an inner shape of the paper box A paper box for use in a hot filling and packaging method of a viscous product such as cheese that has fluidity in a heated state and is hardened by cooling. Is a sack-attached carton made of paperboard or corrugated cardboard, and is a sack-type paper box characterized in that at least an adhesive flap of the carton is externally attached to the carton body. The air vent hole provided in the paper box is characterized by being provided in the upper part of the side surface of the box or / and in the vicinity of the bottom of the side surface, or in the lid.

  Furthermore, the present invention uses a soft packaging bag made of a packaging material comprising a heat-sealable film base material and a paper box provided with one or a plurality of air vent holes for discharging the air in the box. Fill and seal the cheese in the melted state in the packaging bag, then insert the soft packaging bag into the paper box and closely adhere to the inner shape of the paper box, and further cool the paper box containing the soft packaging bag It is a cheese package characterized by doing.

The filling and packaging method of the present invention can eliminate the disadvantages of the conventional method by using a soft packaging bag with a gusset and a sack carton with an air vent hole, and each work of sealed packaging, molding and cooling is simplified, so that production efficiency is improved. And the shape retention of the cheese is improved, and it is possible to obtain a beautiful rectangular parallelepiped product cheese.

  Next, with reference to the drawings, the soft packaging bag according to the invention, the sack-attached carton, and the hot-fill packaging method for molten cheese using the same will be described in detail.

FIG. 1 is a developed view of a sack-attached carton 10 used in the method of the present invention. In FIG. Reference numerals 11 to 14 denote four side walls arranged in one direction by inserting a broken line, 14 is a front side wall, 12 and 13 are left and right side walls, and 11 is a back side wall. Reference numeral 15 is an adhesive flap continuously provided on the rear side wall 14, reference numerals 16 and 18 are upper and bottom covers symmetrically connected to both ends of the front side wall 11, and reference numerals 17 and 19 are the respective lids. Fig. 2 shows an insertion flap continuously provided. Reference numerals 20 to 23 indicate inner flaps provided continuously at both ends of the left and right side walls 12 and 13.
Reference numeral 24 denotes a base portion of the inner flaps 20 to 23, and one or a plurality of air vent holes provided at one or both ends of the left and right side walls 12 and 13. As shown in the figure, the sack box used in the present invention is preferably formed using G-flute corrugated cardboard. Is provided. This air vent hole functions to discharge the air in the box when a soft packaging bag filled with cheese is inserted into a sack-attached carton, and it is sufficient that there is at least one on two opposite faces of the carton. Although illustration is omitted, an air vent hole may be provided in the lid.
Reference numeral 25 denotes a finger hole for the insertion flap operation.
The carton described above is assembled and used in a rectangular tube shape via a bonding glue flap 15 connected to one end of the side wall 14, and at the time of assembly, at least the carton glue flap 15 is attached to the carton body. On the other hand, the contents to be inserted into the carton are prevented from leaving a mark of a flap for pasting.

FIG. 2 is a perspective view of the flexible packaging bag 30 with a gusset used in the method of the present invention. This soft wrapping bag is made of a film material as described below, and is made with a vertical pillow wrapping machine with a gusset folding device. You get a package.
Since the soft packaging bag used here has a heat sealing performance as described later, when the cheese melted and melted in the bag is filled and packaged, it has a sufficient sealing strength and is sealed.

The base material of the plastic film constituting the flexible packaging bag is a plastic film having heat seal performance and plastic used for general foods such as polyethylene terephthalate film, polypropylene film, polyamide film, ethylene-vinyl alcohol copolymer film, polyethylene film, etc. The laminated material can be used.

FIG. 3 is a schematic view illustrating a packaging method according to the present invention. As shown in the figure, it is preferable that the sack box used in the present invention is in a state in which the box is set up, and a pillow package (soft package) filled with molten cheese is inserted thereon. Since the sack box is provided with air vent holes 24 on the side of the main body as shown in the developed view, the bag inserted from above pushes out the air in the box through the holes and discharges it.
Therefore, the processed cheese package filled as a pillow package with a gusset is smoothly inserted and stored in a sack box as shown in FIG.
The dimensions of the sack box are preferably a = A + 0 to +5 mm, a = A ± 5 mm, b = B ± 5 mm, and c = C ± 5 mm with respect to the package size A B C.
In addition, the dimensions A B C of the pillow package with gussets can be changed to arbitrary dimensions to form a rectangular parallelepiped having a desired size.

Example 1
A 15 μm thick polyamide film and a 70 μm thick polyethylene film were laminated to obtain a packaging material. The film width of this packaging material was 300 mm, and 1 kg of processed cheese having a heating and melting temperature of 85 ° C. was filled and packaged by the method described above to obtain a pillow package with gussets of A = 73 mm, B = 67 mm, and C = 200 mm. Pillows with gussets are used to apply air pressure through a fine hole in the package.
No air leakage is observed at a pressure of 60 kPa. After inserting the pillow package with gusset into a = 73 mm, b = 67 mm, c = 201 mm sack type carton, the cover part of the carton was closed and left in the refrigerator all day and night. As a result, the pillow package with gusset maintained a rectangular parallelepiped shape, and the processed cheese was solidified.

The present invention can be used for the packaging of foods such as butter, margarine, chocolate, caramel, sheep cane, sausages, salmon, rice cake, seaweed, and solidified foods such as carrail and stew roux other than cheese. Furthermore, it has the possibility of being used for packaging medicines other than the above-mentioned foods and gel-like products.

FIG. 1 is a developed view of a sack carton 10 used in the method of the present invention. FIG. 2 is a perspective view of the flexible packaging bag 30 used in the method of the present invention. FIG. 3 is a schematic view illustrating a packaging method according to the present invention. FIG. 4 is an explanatory view of a conventional package of processed cheese. FIG. 5 is an explanatory view of a conventional process cheese filling and packaging method.

Explanation of symbols

10 Blank 11-14 Side wall 15 Paste flaps 16, 18 Lid 24 Air vent hole 30 Soft packaging bag

Claims (3)

A gusseted soft packaging bag made of a packaging material comprising a heat-sealing film base material and forming a rectangular parallelepiped, and a sac-type paper box forming a rectangular parallelepiped having one or more air vent holes for discharging air in the box Use
A first step of the filled sealed viscous heating molten state in the flexible packaging bag with the gazette,
When the viscous even after sealing is in a heated and melted state, to insert the flexible packaging bag with the gusset to the sack formula cartons, and live up the flexible packaging bag with the gusset to the inner shape of the sack formula carton A second step of closely adhering and forming into a box shape,
After completion of the second step, the method includes a third step of solidifying the viscous material by allowing the sack-type paper box containing the flexible packaging bag with gusset to stand at room temperature and forcibly cooling with natural air or cooling air. ,
When the lateral width of the bottom surface of the flexible packaging bag with gusset is A, the depth is B, the lateral width of the bottom cover of the sack type paper box is a, and the depth is b, a = A ± 5 mm and b = B A hot filling packaging method characterized by being ± 5 mm . When the height of the side surface of the soft packaging bag with gusset is C and the height of the side wall of the sack type paper box is c, c = C ± 5 mm.
The hot filling packaging method according to claim 1. The viscous material is cheese
The hot filling packaging method according to claim 1 or 2.

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