JP2000079967A - Cylindrical fill package and manufacture thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cylindrical fill package and a method for manufacturing it wherein the package can be easily unsealed without using a cutter such as a knife and a kitchen knife and contents may not be damaged at the time of unsealing. SOLUTION: A fish meat sausage 1 is a cylinder whose cross section exhibits a circular shape comprising a cylindrical package 2 made of a laminate film and contents filled therein and sealed. This cylindrical package 2 is formed of a laminate film wherein an orientation direction of a resin is along a peripheral direction of the cylinder. A film tab 11 is welded to a heat-weldable resin layer of a longitudinal seal 3 of the package 2 to provide an unsealing means for tearing the laminate film of the package 2 with a peripheral region of the cylinder connected with the tab 11 serving as a tear piece.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cylindrical package having a strip-shaped laminated film having a heat-shrinkable resin layer and a heat-welding resin layer, which is filled with contents and shaped into a cylindrical shape having a smooth surface. And a method for producing the same.

[0002]

2. Description of the Related Art Heretofore, a so-called rocket package has been widely used as a package for ham and sausage (see Japanese Patent Publication No. 46-40829). In this rocket package, both ends of the tube are mechanically bound by metal binding members.

[0003] On the other hand, if a metal binding member such as a rocket package is used, it becomes difficult for a metal detector or the like to inspect a foreign object to determine whether or not foreign matter has entered the inside of the stored item. In some cases, a package is formed of a laminated film made of a welding resin, and a sealed portion is thermally welded (see Japanese Patent Application Laid-Open No. 5-85509).

[0004]

By the way, in a package such as ham and sausage which is full of contents, since the package is tight, a knife such as a knife or a knife is required. If not used, opening is not easy.

In order to avoid the use of a metal binding member, the present invention provides a package in which the seal portion is heat-sealed, which can be easily opened without using a knife or a knife, and when opening the contents. It is an object of the present invention to provide a tubular filled package body which does not impair the process and a method for producing the same.

[0006]

In order to achieve the above object, a tubular filled package according to the first aspect of the present invention comprises a strip-shaped laminated film having a heat-shrinkable resin layer and a heat-welding resin layer. And the vertical overlapping portion is vertically sealed by heat sealing to form a cylindrical package, the lower end of the cylindrically formed package is horizontally sealed by heat sealing, and the contents are filled and the upper end is filled. Is horizontally sealed by heat sealing, and then the surface is shaped into a smooth cylindrical shape by pressing the contents due to the heat shrinkage of the laminated film constituting the cylindrical package, and the cylindrical package is oriented in the resin orientation direction. Is composed of a laminated film along the circumferential direction of the cylinder, a tab of the film is welded to the heat-sealed resin layer of the vertical seal portion of the package, and a circumferential portion of the cylinder connected to the above-mentioned tab is used as a tear piece. Pull the laminated film of the package And it is characterized in that it has the phrase opening means.

According to a second aspect of the present invention, there is provided the tubular filling package according to the first aspect, wherein the heat-shrinkable resin layer of the laminated film is a polyamide resin, and the heat-welding resin layer is a polypropylene resin. The shaping by compressing the contents for shrinking the film by heating is performed at a retort temperature of 100 ° C. or more.

Further, according to a third aspect of the present invention, there is provided a method for manufacturing a tubular filled package, comprising: forming a strip-shaped laminated film having a heat-shrinkable resin layer and a heat-welding resin layer into a tubular shape; Forming a cylindrical package by vertically sealing with a heat seal, and horizontally sealing the lower end of the cylindrically formed package by heat sealing, and filling the content with the upper end and horizontally sealing the upper end by heat sealing. And a step of shaping the contents into a cylindrical shape with a smooth surface by pressing the contents by heat shrinkage of the laminated film constituting the cylindrical package, and picking the film on the heat-sealing resin layer of the vertical seal portion of the package. The method includes a step of providing an opening means for welding the pieces and tearing the laminated film in the circumferential direction of the package.

It is to be noted that the tubular sealing package according to the first and second aspects of the present invention and the horizontal sealing part of the tubular sealing package obtained by the manufacturing method according to the third aspect are films filled with contents. The horizontal seal part and the contents are filled in the process of pressing the filled contents due to the heat shrinkage of the laminated film by forming both ends in a wide arc shape so that the boundary with the part becomes a curved shape It is possible to suppress the formation of a protruding filling portion at both ends of the boundary with the formed film portion. And since no protruding filling portion occurs,
Drilling during transportation and movement can be prevented, and good appearance can be maintained.

The laminated film used in the present invention comprises a heat-shrinkable resin layer and a heat-sealable resin layer. In addition, an adhesive layer, a printing layer, a skin layer and the like may be appropriately formed. You may have.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a perspective view illustrating a fish meat sausage as a cylindrical filling package according to an embodiment of the present invention, FIG. 2 is a perspective view showing an opening state of the same, and FIG. FIG. 4 is a process diagram showing a method of manufacturing a tubular filled package according to the present invention.

1 and 2, reference numeral 1 denotes a fish sausage. The fish meat sausage 1 is a cylindrical one having a circular cross section in which a cylindrical package 2 made of a laminated film is filled with contents and sealed. Reference numeral 3 denotes a vertical seal portion, and reference numerals 4 and 5 denote horizontal seal portions. As shown in the enlarged view of FIG. 3, the laminated film constituting the package 2 has a heat-shrinkable resin layer 6 of a polyamide resin as an outer layer and a heat-welding resin layer 7 of a polypropylene resin as an inner layer.

The vertical seal portion 3 of the package 2 is a portion of the strip-shaped laminated film which is vertically overlapped and sealed, 8 is a base end portion, and 9 is a sealing surface. The sealing surface 9 is a surface where the heat-sealing resin layers of the laminated film are polymerized and bonded to each other. The horizontal seal portions 4 and 5 of the package 2 are formed on both ends of the package 2 in a direction orthogonal to the vertical seal portion 3 of the package 2. The orientation direction of the resin of the laminated film constituting the package 2 is along the circumferential direction of the package 2.

As shown in FIG. 3, a knob 10 of a film is welded to the heat-sealing resin layer which is superimposed on each other on the vertical seal portion 3 of the package 2, and a circumferential direction of a cylinder connected to the knob 10 is formed. Is used as a tear piece 11 to constitute an opening means for tearing the laminated film of the package 2. 12 is a pick 10
Reference numeral 13 denotes an opening. Pick 10
Since the inner end is welded to only one of the films constituting the overlapped portion of the vertical seal portion 3, the opening can be performed satisfactorily.

FIG. 4 shows a method of manufacturing a tubular filled package according to the present invention step by step. Hereinafter, each step will be described.

(A) Cylindrical Forming Step A laminated film 15 in which an outer layer made of a heat-shrinkable resin and an inner layer made of a heat-welding resin are laminated via an adhesive is prepared as a winding roll 16. Reference numeral 14 denotes a film piece cartridge. The band-shaped laminated film 15 supplied from the winding roll 16 is shaped into a cylindrical shape via a shaping tube 18 surrounding the periphery of the filling loader 17, and moves continuously from top to bottom. In the process of moving the laminated film 15, the vertical overlapping portion of the laminated film 15 is heat-sealed by a vertical seal heater incorporated in the vertical sealing machine 19, and a continuous tubular package 20 is formed. During the forming process of the cylindrical package 20,
A film piece is inserted from the film piece cartridge 14. Then, this film piece becomes a pick piece.

(B) Filling step The viscous material which is the material of fish sausage is kneaded in advance,
The fixed amount transfer pump 21 fills the inside of the cylindrical package 20 from the filling loader 17. The filling rate of the viscous material is set to an extent less than the maximum filling capacity of the package 20 (approximately 60 to 95%) so as to conform to shrinkage of the film. 2
Reference numerals 2 and 22 denote a pair of feed rolls for feeding the package 20 downward, and a pair of handling rolls 23 and 23 are disposed below the feed rolls.

(C) Horizontal Sealing Step The package 20 filled with the viscous material is treated with the viscous material at the lower end and a portion removed by a pair of horizontal sealing machines 24,
24 is heat sealed. Next, the above-mentioned wrapping body 20 which continues in a continuous manner sequentially moves downward, and
In the case of No. 0, the upper end of the downwardly continuous package body 20 is sealed by the horizontal seal portions by heat-sealing the lower horizontal seal portions again by the cutters 25, 25 also serving as a pair of horizontal seal machines. At this time, the lower part of the package 20 is swollen by filling with a viscous substance so that the shape of the package 20 changes according to the shrinkage of the film, but the upper part of the package 20 is less swollen and the inner volume is reduced. State.

(D) Cutting Step Next, the downwardly continuous package 20 is separated and cut. At the upper end of the package 20, the handling rolls 23, 23
The part from which the viscous material has been removed by treating with a pair of horizontal sealing machines 2
4, 24 heat sealed.

(E) Conveying Step The package 20 filled with the viscous material is conveyed to a heating tank 27 on a bucket 26 by a conveying belt (not shown).

(F) Heating Step In the heating tank 27, the package 20 filled with the conveyed viscous material is heated at a retort temperature of 100 ° C. or more, and the heat shrinkage of the laminated film constituting the package 20 is performed. The conductive resin is thermally contracted. And, by this heating step, the package 2
0 is shaped into a cylindrical shape with a circular cross section. In the heating step, the package 20 having an elliptical cross section is shaped into a cylindrical shape with a circular cross section. It is preferable to form it in an arc shape (see FIG. 1 or FIG. 4). For this reason, the heating plates of the horizontal sealing machines 24, 24 have an arc shape (not shown).

(G) Product Unloading Step The package 20 shaped into a cylinder as described above is transported out of the bucket 28 by a transport belt (not shown).

[0023]

According to the present invention, a strip-shaped laminated film having a heat-shrinkable resin layer and a heat-welding resin layer is formed into a cylindrical shape, and a vertically overlapping portion is vertically sealed by heat sealing to form a cylindrical package. The body is molded, the lower end of the cylindrically formed package is horizontally sealed by heat sealing, the contents are filled and the upper end is horizontally sealed by heat sealing, and then the laminated film constituting the cylindrical package is formed. The surface is shaped into a smooth cylindrical shape by pressing the contents due to heat shrinkage, and the cylindrical package is composed of a laminated film in which the resin orientation direction is along the circumferential direction of the cylinder. By welding the knob of the film to the heat-sealing resin layer of the above, and using the opening means to tear the laminated film of the package as a tear piece at the circumferential portion of the cylinder connected to the knob, the metal binding member of the Avoid using The sealing portion in the package of heat welding, easily opened without using a tool such as a knife or knives, yet can be obtained that there is no cylindrical packing wrapper impairing the contents when unsealing.

[Brief description of the drawings]

FIG. 1 is a perspective view illustrating a fish sausage as a tubular filling package according to an embodiment of the present invention.

FIG. 2 is a perspective view showing an opening mode of the tubular filled package shown in FIG.

FIG. 3 is an enlarged cross-sectional view near a vertical seal portion.

FIG. 4 is a process chart showing a method for producing a tubular filled package according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fish-meat sausage 2 Package 3 Vertical seal part 4, 5 Horizontal seal part 6 Heat-shrinkable resin layer 7 Heat-weldable resin layer 8 Base end part of vertical seal part 9 Seal surface 10 Knob 11 Cut part 12 Weld part 13 Opening 14 Film cartridge 15 Laminated film 16 Rolls 17 Filling loader 18 Shaping cylinder 19 Vertical sealing machine 20 Packaging 21 Metering pump 22, 22 A pair of feed rolls 23, 23 A pair of handling rolls 24, 24 A pair of horizontal seals Machine 25, 25 A cutter also serving as a pair of horizontal sealing machines 26 Bucket 27 Heating tank 28 Bucket A Tube forming process B Filling process C Horizontal sealing process D Cutting process E Transporting process F Heating process G Product unloading process

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3E050 AA03 AA08 BA11 CA01 CB02 DA03 DC02 DD03 DD04 EA01 EA10 FA09 FB01 FC01 GA06 GA08 GB01 JA02 JA05 3E067 AA14 AB02 AB06 AC01 BA14A BB14A BB16A BB25A BC04 EB04 EB24 EB14 FA01 FA08 FB01 FC01 GC01 GD02 GD06 3E086 AA22 AB03 AC07 AC11 AC15 AC16 AD16 BA04 BA15 BB01 BB23 BB41 BB51 BB61 BB67 BB68

Claims (3)

[Claims] 1. A belt-shaped laminated film having a heat-shrinkable resin layer and a heat-weldable resin layer is formed into a cylindrical shape, and a vertically overlapped portion is vertically sealed by heat sealing to form a cylindrical package.
The lower end of the tubular package is horizontally sealed by heat sealing, the contents are filled, the upper end is horizontally sealed by heat sealing, and then the contents are produced by heat shrinkage of the laminated film constituting the cylindrical package. The surface of the package is shaped into a smooth cylinder by the compression of the cylinder, and the cylindrical package is composed of a laminated film with the resin orientation direction along the circumferential direction of the cylinder. A tubular filling package, characterized in that a tab of a film is welded to the package, and the opening in the circumferential direction of the cylinder connected to the tab is used as a tear piece to tear the laminated film of the package. 2. The heat-shrinkable resin layer of the laminated film is made of a polyamide resin, and the heat-welding resin layer is made of a polypropylene-based resin. The contents of the heat-shrinkable laminated film are compressed at a retort temperature of 100 ° C. or more. The tubular filled package according to claim 1, wherein the packing is performed. 3. A step of forming a strip-shaped laminated film having a heat-shrinkable resin layer and a heat-welding resin layer into a tubular shape, and vertically sealing a vertical overlapping portion by heat sealing to form a tubular package. A step of horizontally sealing the lower end of the cylindrical package by heat sealing, filling the contents, and horizontally sealing the upper end by heat sealing, and the heat shrinkage of the laminated film constituting the cylindrical package. A process of shaping the surface into a cylindrical shape by pressing the contents, and an opening means for welding a tab of the film to the heat-sealing resin layer of the vertical seal portion of the package and tearing the laminated film in the circumferential direction of the package. A method for producing a tubular filled package, which comprises a step of providing.