JP2017218183A - Package manufacturing method and sealer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a package less likely to allow occurrence of unexpected break even in the case a package is formed of sheets in which weak parts where a magic cut (R), a half cut and a laser processing and/or the like are implemented to a periphery of the sheet, are formed.SOLUTION: A package manufacturing method comprises: a step for folding a sheet provided with a weak part 140 at peripheral edge into two; and a step for forming an isolation seal part 120 separating storage parts 130 from each other, in the sheet folded into two. In the step for forming the isolation seal part 120, a sealer 420 with a heat seal surface partially missing is used not to allow the isolation seal part 120 to be extended up to the weak part 140.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a method for manufacturing a package and a sealer. More specifically, the present invention relates to a method for manufacturing a package and a sealer that can prevent unintended breakage at the time of manufacturing the package.

  Conventionally, packaging bodies in which contents such as solids or liquids are sealed have been distributed in the housing portions. Examples of such a package include powdered soups and seasonings such as instant foods, frozen foods, and chilled foods. As a method for producing such a package, a method is known in which a linked package is prepared and then separated into individual packages (see, for example, Patent Document 1).

  Recently, in order to improve the openability of the package, a package having fragile portions such as cuts and notches has been proposed (see, for example, Patent Document 2). Further, Magic Cut (registered trademark), half cut, laser processing, and the like are also known as a method of forming a fragile portion other than a cut or notch.

JP-A-2006-3032 Japanese Utility Model Publication No.57-058035

  By the way, fragile portions such as cuts and cuts can be formed by post-processing on the package containing the contents. However, it is extremely difficult to form weak parts such as Magic Cut (registered trademark) and half cut by post-processing on the package containing the contents. Therefore, it is common to process the sheet before forming the package in advance.

  On the other hand, when a sheet having a magic cut (registered trademark) or a half cut formed on the peripheral edge of the sheet is formed into a package by the method described in Patent Document 1, unintentional breakage occurs from the fragile portion along the vertical seal. There was a problem to do. This is because when the vertical seal is formed over the top and bottom of the package with the same width as the filling nozzle, tension is concentrated on the end (particularly the opening) of the vertical seal, and the fragile portion breaks. It is because it ends up. As a result, breakage occurs from the magic cut or the half cut along the vertical seal.

  The present invention has been made in view of the above problems. That is, the problem of the present invention is that unintentional breakage occurs even when a package is manufactured using a sheet in which a weak portion such as Magic Cut (registered trademark) or half cut is formed on the peripheral edge of the sheet. It aims at providing the manufacturing method of the package which does not produce easily.

  Another problem of the present invention is that it is not intended when a package is manufactured using a sheet in which a weak portion such as Magic Cut (registered trademark), half cut or laser processing is formed on the peripheral edge of the sheet. It aims at providing the sealer suitable for manufacture of the package which does not produce a fracture | rupture easily.

  The present invention that solves the above-described problems is a method for manufacturing a package, and includes a step of folding a sheet having a weakened portion on a peripheral edge thereof in half, and accommodating the folded sheet in a predetermined interval. Forming an isolation seal part separating the parts, and using the sealer in which a part of the heat seal surface is missing when forming the isolation seal part, the isolation seal part reaches the fragile part It is a manufacturing method of the package which was made not to do.

  According to such a configuration, since the sealer in which a part of the seal surface is missing is used, the end portion of the isolation seal portion does not reach the fragile portion. Therefore, when the package is formed, the fragile portion is not subjected to tension or heat, and it is possible to prevent an unintended break from the fragile portion along the isolation seal portion.

  In the manufacturing method, when forming the isolation seal portion, it is preferable to form the isolation seal portion with a nozzle sandwiched between the sheets. Further, it is preferable that the method further includes a step of sealing the housing portion by providing the seal side so as to face the non-sealed side formed by folding and straddle the end of the isolation seal portion.

  According to such a configuration, since the package can be formed with the nozzle sandwiched, it is not necessary to take the width of the isolation seal portion more than necessary, and the cost can be reduced. In addition, since the nozzle is in the housing portion, the contents can be easily filled. Furthermore, by providing the seal side so as to straddle the end of the isolation seal part, the accommodating part can be sealed without adding a new device.

  The present invention that solves the above-mentioned problems is a sealer that forms an accommodating portion by heat-sealing a folded sheet, and the sealer is a pair of sandwiching structures arranged so that the heat-sealing surfaces face each other across the sheet And at least one of the pair of sealers is a sealer in which a heat seal surface corresponding to a peripheral edge portion of the sheet is missing.

  According to such a configuration, since the seal surface of the sealer corresponding to the peripheral edge portion of the sheet is missing, even if the sealer pinches the sheet, only that portion can be prevented from being heat sealed. Thereby, the tension | tensile_strength and heat concerning a sheet | seat peripheral part can be weakened.

  According to this invention, a package can be manufactured using the sheet | seat in which the weak part was formed. Thereby, the package body in which easy-openability was improved can be provided. In addition, unintended breakage can be prevented during the production of the package.

BRIEF DESCRIPTION OF THE DRAWINGS It is a front view of the package body produced with the manufacturing method which concerns on this invention, Comprising: (a) is a package body before filling with the content, (b) is the package body of the product form with which the content was filled. is there. It is a schematic explanatory drawing of the apparatus for enforcing the manufacturing method concerning this invention It is drawing for demonstrating the sealer which concerns on this invention, Comprising: (a) is a perspective view, (b) is a top view at the time of heat sealing. It is drawing for demonstrating the conventional sealer, Comprising: (a) is a perspective view, (b) is a top view at the time of heat sealing. It is a front view showing the package manufactured using the conventional sealer.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments for carrying out the invention will be described in detail with reference to the drawings as appropriate. In addition, the same code | symbol is attached | subjected to the part of the same name.

  FIG. 1 is a front view of a package produced by the manufacturing method according to the present invention, in which (a) is a package before filling the contents, and (b) is a product form filled with the contents. It is a package.

  The package 100 is made of a non-permeable packaging sheet material. As the non-permeable packaging sheet material, for example, a synthetic resin film such as nylon, polyethylene, polypropylene, polyester, or polyethylene terephthalate, or a film obtained by laminating these, a metal such as aluminum or copper, Examples include aluminum foil.

  The packaging body 100 includes a non-sealed side 110 formed by folding a continuous packaging sheet material in half, and an isolation seal portion 120 provided in a direction perpendicular to the non-sealed side 110 to form an accommodating portion 130. Sealed packaging.

  The weak part 140 is provided in the peripheral part of the non-permeable packaging sheet material used in the present invention. Examples of the fragile portion 140 include Magic Cut (registered trademark), half cut, and laser processing. Moreover, the weak part 140 may be provided in all the peripheral parts of the packaging sheet raw material, and may be provided only in the one part peripheral part.

  The isolation seal part 120 is a seal part for separating the accommodating part 130, and is formed at a predetermined interval. The isolation seal portion 120 is formed from the non-seal side 110 to directly below the fragile portion 140, but a gap d is formed between the end portion of the isolation seal portion 120 and the fragile portion 140. The gap d between the end of the isolation seal portion 120 and the fragile portion 140 is preferably 1 to 10 mm, and more preferably 1 to 5 mm.

  The contents are enclosed in the accommodating portion 130 surrounded by the isolation seal portion 120 and the non-seal side 110. In addition, the package 100 according to the present invention is used as a final product by sealing the housing portion 130 with a seal side 150 that is finally provided to face the non-seal side 110.

  The final product can be used as an accessory for products such as instant food, chilled food, and frozen food. Examples of the contents include powder soups, liquid soups, ingredients, seasonings made of powdered granules such as savory chili, yam, and pepper.

  Next, the manufacturing method of the package 100 according to the present invention will be described. Here, as an example, a package 100 in which two storage portions 130 filled with contents are connected as an end product will be described.

  FIG. 2 is a schematic explanatory view showing a bag making and filling machine 400 for carrying out the method for manufacturing the package 100 according to the present invention.

  The bag making and filling machine 400 includes a sheet roll 410, a vertical sealer 420, filling nozzles 431 and 432, a horizontal sealer 440, and a cutter 450. The packaging sheet material 200 discharged from the sheet roll 410 by the bag making and filling machine 400 is finally fed with the contents via the vertical sealer 420, the filling nozzles 431, 432, the horizontal sealer 440, and the cutter 450, respectively. Products are manufactured sequentially.

  The sheet roll 410 is obtained by winding the packaging sheet material 200 in a roll shape. Here, the packaging sheet material 200 is not particularly limited as long as it is a heat-sealable material, but for example, a synthetic resin film such as nylon, polyethylene, polypropylene, polyester, or polyethylene terephthalate, or a film in which these are laminated. Alternatively, an aluminum foil or the like obtained by vapor deposition of a metal such as aluminum or copper may be used. The packaging sheet material 200 is continuously conveyed while being drawn from the sheet roll 410.

  Before reaching the vertical sealer 420, the wrapping sheet material 200 is folded in two while being conveyed so that a crease comes in the direction along the conveyance direction. At this time, the folded portion (non-seal side 110, see FIG. 1) folded in two is positioned below, and the top is open.

  Filling nozzles 431 and 432 are inserted into the folded folding sheet material 200 and heat sealed in the vertical direction by the vertical sealer 420. Thereby, the accommodating part 130 (refer FIG. 1) is formed.

  Here, the structure of the vertical sealer 420 according to the present invention will be described in more detail with reference to FIGS. 1 (a) and 3 (a), 3 (b). The vertical sealer 420 applies heat to the packaging sheet material at the heat seal surface 421 and forms the isolation seal portion 120 by thermally welding the packaging sheet materials. The vertical sealer 420 according to the present invention has a structure having a defect portion 422 in a part of the heat seal surface 421. By providing the defect portion 422, heat is not applied to the packaging sheet material at a position corresponding to the defect portion 422, and the packaging sheet materials are not thermally welded to each other. That is, the isolation seal portion 120 does not reach the fragile portion 140 due to the missing portion 422.

  Further, by providing the defect portion 422, a gap is not formed between the side surfaces of the filling nozzles 431 and 432 and the packaging sheet material 200 (that is, tension is applied to the packaging sheet material 200 in a direction parallel to the conveyance direction). Even if the isolation seal portion 120 is formed with the filling nozzles 431 and 432 being sandwiched (in the state of being applied), there is a space around the opening by the amount of the missing portion 422. For this reason, the opening (particularly, the fragile portion 140) is not subjected to tension or heat, so that unintended breakage from the fragile portion 140 can be prevented.

  The defect portion 422 is not particularly limited as long as the isolation seal portion 120 does not reach the fragile portion 140, and the design can be changed as appropriate. In FIG. 3B, the missing portion 422 is provided in any of the vertical sealers 420, but the missing portion 422 may be provided only in one of them.

  On the other hand, as shown in FIG. 4A, in the case of the vertical sealer 720 having no defect portion, the packaging sheet materials are heat-welded on the entire heat seal surface 721. Therefore, as shown in FIG. 5, the isolation seal portion 120 reaches the fragile portion 140. Further, as shown in FIG. 4B, a gap is not formed between the side surfaces of the filling nozzles 431 and 432 and the packaging sheet material 200 (that is, in a direction parallel to the conveying direction with respect to the packaging sheet material 200). If an attempt is made to form the isolation seal 120 while the filling nozzles 431 and 432 are sandwiched (with tension applied), the tension is concentrated at the end of the isolation seal 120. And when the tension applied to the end of the isolation seal part 120 exceeds a certain threshold value, an unintended breakage occurs from the fragile part 140.

  In addition, as a method for preventing the isolation seal portion 120 from reaching the fragile portion 140, a method in which a heat insulating material is sandwiched between the packaging sheet material 200 and the packaging sheet material 200 is conceivable. It is considered that unintentional breakage from the fragile portion 140 occurs because the tension concentrates on the end portion of the material.

  Next, the formed container 130 is filled with contents from the filling nozzles 431 and 432. Although simplified in FIG. 1, a plurality of vertical sealers 420 and filling nozzles 431 and 432 may be provided and move in synchronization with the speed at which the packaging sheet material 200 is conveyed. Also good. Note that the packaging sheet material 200 thus filled with the contents is referred to as a connected package 210 in the subsequent steps.

  The connection package 210 is sealed at its upper end by the horizontal sealer 440, thereby sealing the housing portion 130. At this time, as shown in FIG. 1B, the end of the horizontal sealer 440 and the end of the packaging sheet material 200 provided with the fragile portion 140 are aligned, and the end of the isolation seal portion 120 is located. Is preferably included so as to be included in the seal width of the lateral seal.

  In addition, before sealing with the horizontal sealer 440, an upper end may be preheated with a heater. By preheating with a heater, sealing with the horizontal sealer 440 can be performed reliably. The position where the connected package 210 is preheated by the heater is not particularly limited as long as it is sealed by the vertical sealer 420 and before sealing by the horizontal sealer 440.

  The connected package 210 whose upper end is sealed by the horizontal sealer 440 is cut by the cutter 450 to complete individual packages 100.

  In the said Example, although the package body which two package bodies connected was demonstrated to the example, this invention is not limited to this. For example, the packages may not be connected, and conversely, three or more may be connected.

DESCRIPTION OF SYMBOLS 100 Package 110 Non-seal side 120 Isolation seal part 130 Storage part 140 Fragile part 150 Seal side 200 Packaging sheet material 400 Bag making and filling machine 410 Sheet roll 420,720 Vertical sealer 421,721 Heat seal surface 422 Defect part 431,432 Filling nozzle 440 Horizontal sealer 450 Cutter

Claims (4)

A method for manufacturing a package,
A step of folding the sheet provided with the fragile portion in the peripheral portion, and
Forming an isolation seal part that separates the accommodating part at a predetermined interval with respect to the folded sheet, and using a sealer in which a part of the heat seal surface is missing when forming the isolation seal part The manufacturing method of the package which prevented the said isolation | separation seal | sticker part from reaching the said weak part.   The method for manufacturing a package according to claim 1, wherein when forming the isolation seal portion, the isolation seal portion is formed in a state where a nozzle is sandwiched between the sheets.   3. The method according to claim 1, further comprising a step of sealing the accommodating portion by providing the seal side so as to face the non-seal side formed by folding in two and straddle the end of the isolation seal portion. Manufacturing method of the package. A sealer that forms an accommodating portion by heat-sealing a folded sheet,
The sealer is a pair of clamping structures arranged so that the heat seal surfaces face each other across the sheet,
At least one of the pair of sealers is a sealer in which a heat seal surface corresponding to a peripheral portion of the sheet is missing.

Images