JP4760030B2 - Easy-open packaging bag - Google Patents

Description

  The present invention relates to an easy-open packaging bag that can be easily torn and opened by hand when storing food and cosmetics and taking out the contents.

  Conventionally, packaging bags such as stand-up pouches that are filled with toiletries such as food, cosmetics, or detergent, and based on a plastic film, with the innermost layer being a sealant layer and the periphery of the laminated packaging material being sealed, are known. In order to facilitate the opening by tearing the hand, for example, as shown in the plan view of FIG. 5, a V-shaped notch (26V) is formed on the planned opening portion (20) of the sealed left side seal portion (12L). ) Is cut, and this V-shaped notch (26V) is the starting point, and it is torn and opened by hand.

  However, in the case of only the V-shaped notch (26V) cut into the left side seal portion (12L), this V-shaped notch is used unless the laminated packaging material uses a high-strength stretched film. When tearing by hand in the direction (P) of the planned opening site (20) starting from (26V), if the contents are liquid or kneaded, not torn parallel (straight), but torn diagonally Had a problem of spilling.

  To solve this problem, for example, as shown in the plan view of FIG. 6, a V-shaped notch (26V) is applied to the planned opening portion (20) of the sealed left side seal portion (12L). There is a packaging bag in which a straight half cut groove (22) is engraved on the same line as the planned opening portion (20) from the tip (26a) of the V-shaped notch (26V).

  However, since the straight half-cut groove (22) is made by laser processing, and the V-shaped notch (26V) is cut by a rotary cutter or the like, both processing means are different. 26V), the position of the tip (26a) and the straight half-cut groove (22) is likely to be shifted. Therefore, when tearing, if the contents are liquid or kneaded, it will spill. It could not be said that the problem of the problem was solved.

  Furthermore, as a measure for improving the combination of the V-shaped notch (26V) and the linear half-cut groove (22), for example, as shown in the plan view of FIG. 7, the sealed left side seal portion (12L) A plurality of linear half-cut grooves (22) are arranged in parallel in the planned opening portion (20), and a V-shaped notch (26V) is formed in the left side seal portion (12L) of the planned opening portion (20). (For example, refer to Patent Document 1).

The above prior art documents are shown below.
JP 2000-118567 A

However, in the conventional technique as described above, that is, a combination of a V-shaped notch (26V) and a plurality of linear half-cut grooves (22), the V-shaped notch (26V) of the planned opening site (20) is the starting point. As a result, it is torn along one of the plurality of linear half-cut grooves (22). There was a concern that it could come off from the upper or lower straight half-cut groove (22).

  The present invention solves the problems of the prior art, and the object of the present invention is to provide a packaging bag in which the innermost layer is a sealant layer and the periphery of a laminated packaging material based on a plastic film is sealed. The present invention provides an easy-open packaging bag that can be easily and reliably torn from the edge of the peripheral seal along the planned opening site.

In order to achieve the above object in the present invention, first, in the invention of claim 1, the sealant layer surface of the packaging material film whose innermost layer is a sealant layer is opposed to each other, the peripheral edge thereof is sealed, and the peripheral seal portion in the packaging bag having an opening planned site by tearing one side edge portion, the opening proposed site, a plurality of successive V-shaped half-cut grooves toward the apex opening scheduled direction are engraved in parallel, the continuous linear half-cut groove so as to pass through the apex of the half-cut grooves of V-shape are engraved, further the V-shaped half-cut groove one or more straight lines that are continuous from the upper side and the lower side vertices of the An easy-open packaging bag is characterized in that the half-cut groove is engraved so as to intersect or be in contact with the V-shaped half-cut groove.

Further, in the invention of claim 2, in which the claim 1 Symbol placement easy-open packaging bag, characterized in that the notch is cut into the opening start end of the opening proposed site.

Furthermore, in the invention of claim 3, the V-shaped and linear half-cut grooves are engraved with a laser beam, and the depth thereof is such that it does not penetrate the sealant layer. It is set as the easily openable packaging bag of any one of 1 or 2 .

  Since this invention is the above structure, there exist the following effects.

That is, according to the first aspect of the invention, the sealant layer surface of the packaging material film whose innermost layer is a sealant layer is opposed to each other, the peripheral edge thereof is sealed, and the peripheral seal portion is torn to one side edge. by the packaging bag having an opening proposed site, the opening proposed site, it is engraved vertices in parallel a plurality of successive V-shaped half-cut grooves toward the opening planned direction, of the V-shaped half-cut grooves A continuous linear half-cut groove is engraved so as to pass through the apex, and one or more linear half-cut grooves continuous from the apex of the V-shaped half-cut groove to the upper side and the lower side are formed into the V-shape. When it is opened by tearing by hand from the edge of one side edge of the peripheral seal part to the planned opening direction by being engraved so as to intersect or touch the mold half-cut groove, Torn accordance continuous linear half-cut grooves, and even deviated from the linear half-cut groove in the middle, torn accordance linear half-cut groove in again inside is fixed in the V-shaped half-cut grooves Therefore, it is possible to obtain an easily openable packaging bag that is easily and surely opened within the planned opening portion without coming out of the uppermost or lowermost straight half cut groove.

Further, by continuous linear half-cut groove so as to pass through the apex of the pre-Symbol V-shaped half-cut grooves are engraved, when tearing open the opening planned direction by hand, and finally opening the proposed site It is possible to obtain an easy-open packaging bag that can be torn according to a straight half-cut groove passing through the vertex of the V-shaped half-cut groove at the center of the sheet, and thus a good-looking opening can be easily and reliably formed. it can.

Further, according to the invention according to claim 2 , since the notch is cut into the opening start end portion of the planned opening portion, the tear start starts from this notch, so the vicinity of the center of the planned opening portion It is possible to make an easily openable packaging bag that can be torn easily and reliably.

Furthermore, according to the invention of claim 3 , since the V-shaped and linear half-cut grooves are engraved by a laser beam, the shape of a plurality of V-shaped and linear half-cut grooves, The depth can be easily adjusted, the sealant layer can be easily adjusted so as not to penetrate, and a highly efficient and accurate half-cut groove can be provided.

  Therefore, the present invention exhibits an excellent practical effect as an easy-open packaging bag that can store food, cosmetics, and the like and can be easily torn and opened when the contents are taken out.

  The best mode for carrying out the present invention will be described below in detail with reference to the drawings.

  FIG. 1 shows an example of the easy-open packaging bag of the present invention, and FIG. 2 shows another example of the easy-open packaging bag of the present invention. 3 is an explanatory view when the easy-open packaging bag of the present invention is opened, and FIG. 4 is a plan view in which a notch is formed in the easy-open packaging bag of the present invention.

  In the present invention, for example, as shown in the plan view of FIG. 1, the sealant layer surface of the packaging material film (5) whose innermost layer is a sealant layer (not shown) is opposed to each other, and the peripheral edges thereof are sealed. It is a packaging bag consisting of a seal part (12L, 12R), an upper edge seal part (16), and a bottom edge seal part (14), and is scheduled to be opened by tearing from the edge part of the left side seal part (12L) toward the center. An easily openable packaging bag (1) having a part (20), which can be easily torn and opened by hand when taking out food, cosmetics and the like stored therein (1) ).

Therefore, the invention according to claim 1 is, for example, as shown in the plan view of FIG. 1, from the edge of the left side seal portion (12L) toward the center and the lower portion of the upper edge seal portion (16). the opening proposed site (20) that is parallel to the vertex 7 consecutive V-shaped with its (24a) in the opening planned direction (P) half-cut groove (24) is engraved in parallel, further these the upper side of the vertex (24a) of the V-shaped half-cut groove (24), and a continuous linear half-cut grooves in two increments to the lower side (22) of each V-shaped half-cut groove (24) have been engraved as cross or contact, continuous linear half-cut grooves of one to pass through the apex (24a) of each V-shaped half-cut groove (24) (22c) is engraved on further The easy-open packaging bag (1).

  The continuous V-shaped half-cut groove (24) and linear half-cut groove (22, 22c) may be intermittent, that is, a dotted line or a broken line, or a combination thereof.

Moreover, although the said linear half cut groove | channel (22) shall be provided in the upper part side and two in the lower part side, it is necessary to provide in the upper part side and one part in the lower part side, and a packaging bag Depending on the size of the V-shaped half-cut groove (24), the maximum is three (3).
When combined with the linear half-cut groove (22c) passing through 4a), an easily openable packaging bag (1) consisting of seven half-cut grooves (22, 22c) can be obtained.

  The number of V-shaped half-cut grooves (24) engraved in the planned opening portion (20) depends on the size of the packaging bag, for example, the width of the packaging material film (5) shown in FIG. In the case of the easily openable packaging bag (1) with (W) of 160 mm, about 5 to 20 are suitable values for opening.

  Further, for example, as shown in the plan view of FIG. 2, the part to be opened (20) is directed from the edge of the left side seal part (12L) toward the vicinity of the center of the upper edge seal part (16), that is, It is applicable also to the easy-open packaging bag (1) which tears and opens an upper corner. This is because four consecutive V-shaped half-cut grooves (24) with the apex (24a) extending obliquely upward in the planned opening direction (P) are engraved in parallel in the planned opening portion (20). Further, two linear half-cut grooves (22) that are continuous from the apex (24a) of the V-shaped half-cut grooves (24) to the upper and lower sides are formed into each V-shaped half-cut groove ( 24) is cut so as to intersect or be in contact with the V-shaped half-cut groove (24), and a continuous straight half-cut groove (22c) is formed so as to pass through the apex (24a) of each V-shaped half-cut groove (24). It can also be set as the easily openable packaging bag (1).

  For example, when the easy-open packaging bag (1) shown in FIG. 1 is torn and opened in the planned opening direction (P) of the planned opening portion (20) by hand, for example, in the enlarged partial view of FIG. As shown, even if it is initially torn in accordance with the second continuous straight half-cut groove (22) from the top, and is removed from the straight half-cut groove (22) on the way, the first V-shaped Modified by the mold half-cut groove (24) and then torn again according to the second continuous linear half-cut groove (22) from above, and corrected by the second V-shaped half-cut groove (24) Finally, it is torn (cut) according to the linear half-cut groove (22c) passing through the vertex (24a) of the V-shaped half-cut groove (24) in the center of the planned opening portion (20). Thick line (2 ) Is indicated) as in as in the conventional, can be easily openable packaging bag without departing vertically side from the top or bottom of the linear half-cut groove (22) (1).

Further, in the invention according to claim 2 , for example, as shown in the partial enlarged view of FIG. 4A, an I-shaped notch (in the end portion in the planned opening portion (20) of the left side seal portion (12L) ( 26I) is an easy-open packaging bag (1) cut.

  Further, for example, as shown in the partial enlarged view of FIG. 4B, the V-shaped notch (26V) is easily cut into the end portion in the planned opening portion (20) of the left side seal portion (12L). Although it can also be set as an openable packaging bag (1), it can also be made into a U-shaped notch or a notch notch especially although it is not illustrated.

  As described above, the I-shaped notch (26I) and the V-shaped notch (26V) are provided in the vicinity of the center of the five continuous linear half-cut grooves (22) at the end in the planned opening portion (20). As a result, when opening manually torn, each notch (26I, 26V) starts to tear, so that it is easy to open easily from the vicinity of the center without any planned opening portion (20) ( 1).

Furthermore, in the invention according to claim 3 , for example, as shown in FIG. 1, the engraving of the plurality of V-shaped half-cut grooves (24) and the linear half-cut grooves (22, 22c) is a laser beam. It is an easy-open packaging bag (1) made by.

  Examples of the laser include a carbon dioxide laser, a YAG laser, and an excimer laser that are used for laser processing and have a continuous or pulse oscillation format.

  Among the lasers, for example, as shown in the side sectional view of FIG. 4C (the BB surface of FIG. 4A), the outermost base film (32) particularly as the packaging material film (5). A carbon dioxide gas laser having a wavelength of 10.63 μm (infrared rays) that is absorbed by polyethylene terephthalate, stretched nylon film, or the like can be suitably used. That is, by condensing the light of the carbon dioxide laser with a condensing lens and irradiating the surface of the base film (30), the irradiated portion of the base film (32) is heated, melted, decomposed, ashed, etc. A plurality of V-shaped half-cut grooves (not shown) and linear half-cut grooves (22, 22c) can be formed depending on the degree of removal.

  Using the carbon dioxide laser, as shown in FIG. 4C, for example, a biaxially stretched nylon film having a thickness of 20 μm is formed of a base film (32) and a low density polyethylene film having a thickness of 60 μm is formed of a sealant layer (30 The surface of the easy-open packaging bag (1) using the packaging material film (5) is irradiated with a carbon dioxide laser beam having a spot system of 120 μm at an output of 150 W and repeatedly at 10 KHZ. When the scanning speed of the carbon dioxide laser beam at this time is about 100 m / min, only the outermost base film (32) on the pouch surface is removed, and the linear half-cut grooves (22, 22c) are formed. In order to form a plurality of linear half-cut grooves (22, 22c), they may be shifted by a plurality of scans by CP control. Further, as shown in FIG. 4 (c), a plurality of linear half-cut grooves (22, 22c) and V-shaped half-cut grooves (not shown) are also formed on the front surface from the back surface of the easy-open packaging bag (1). It can also be formed under the same conditions.

  As described above, since the linear half-cut grooves (22, 22c) and the V-shaped half-cut grooves are formed by the scanning of the CP-controlled laser beam, a plurality of V-shaped and linear half-cut grooves are formed. It is easy to adjust the shape and depth of (22, 22c), it is easy to adjust so that the innermost sealant layer (30) does not penetrate, and an accurate half-cut groove is applied with high efficiency. It can be set as an easily openable packaging bag (1).

  In addition, the I-shaped notch (26I) and V-shaped notch (26V) shown in FIGS. 4 (a) and 4 (b) are engraved when the packaging material film (5) is sealed to form a bag (contents). It can be formed simultaneously with the punching and cutting of the bag, for example, with a rotary cutter.

  The packaging material film (5) constituting the easy-open packaging bag (1) of the present invention may be only the innermost sealant layer (30). For example, as shown in FIG. The base film (32) and the innermost sealant layer (30) are generally composed of two layers. As the base film (32), a biaxially stretched nylon film (ONy), a polyethylene terephthalate film (PET) ), Polycarbonate film (PC), and the like, which are appropriately selected depending on the contents to be stored and the use of the bag.

Further, as the innermost sealant layer (30), heat-sealable linear low density polyethylene (LLDPE), low density polyethylene (LDPE), high density polyethylene (HDPE) film or unstretched polypropylene film (CPP) An easy-open packaging bag (1) in which the sealant layers (30) made of these resins are heat-sealed to have left and right side seal portions (not shown), an upper edge seal portion (16) and the like at the periphery. ). Further, an ethylene / vinyl alcohol copolymer resin film (EVOH) between the base film (32) and the sealant layer (30) for the purpose of protecting the contents, for example, for the purpose of protecting the contents, although not particularly shown. Depending on the purpose, such as ceramic vapor-deposited film on which silicon oxide or the like is vapor-deposited or aluminum foil laminated with an adhesive or the like, or laminated biaxially oriented nylon film for the purpose of bending pinhole resistance 3
For this reason, it is easy to control the depth in forming the linear half-cut grooves (22, 22c) by the above-mentioned laser. The multilayer packaging material film (5) is preferred.

One embodiment of the easy-open packaging bag of the present invention is shown and is an explanatory view showing the plane. The other embodiment of the easily openable packaging bag of this invention is shown, and it is explanatory drawing showing the plane. FIG. 2 is a schematic view showing a part of a plane when an example of the easy-open packaging bag of the present invention is opened. It is a top view which shows the form of the opening opening part of the easily openable packaging bag of this invention, (a) is what an I-shaped notch was engraved, (b) was engraved a V-shaped notch (C) is a sectional view showing the BB plane of (a). It is a top view for demonstrating one example of the packaging bag which has the opening plan site | part by the conventional tearing. It is a top view for demonstrating another example of the packaging bag which has the opening plan part by the conventional tearing. It is a top view for demonstrating another example of the packaging bag which has the opening plan part by the conventional tearing.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Easily openable packaging bag 5 ... Packaging material film 12L ... Left side seal part 12R ... Right side seal part 14 ... Bottom edge seal part 16 ... Upper edge seal part 20 ... Planned opening part 22 ... ... Continuous linear half-cut groove 22c ... Continuous linear half-cut groove 24c ... Continuous V-shaped half-cut groove 24a ... Vertex 26a of continuous V-shaped half-cut groove ... ...... Notch tip 26I ... I-type notch 26V ... V-type notch 27 ... Cut line to be torn (thick line)
30 ... Sealant layer 32 ... Base film P ... Opening direction W ... Base film width

Claims (3)

In the packaging bag in which the sealant layer surface of the packaging material film, the innermost layer of which is a sealant layer, faces each other, the peripheral edge thereof is sealed, and the peripheral sealing portion has a planned opening portion by tearing at one side edge. the site, a plurality of successive V-shaped half-cut grooves toward the apex opening will direction is engraved in parallel, the continuous linear half-cut groove so as to pass through the apex of the half-cut groove of the V-shaped engraved, engraved to further the V-shaped half-cut groove one or more linear half-cut groove which is continuous from the upper side and the lower side vertices of the cross or contact with the V-shaped half-cut grooves An easy-open packaging bag characterized by 1 Symbol placement easy-open packaging bag according to claim characterized in that it notches cut into the opening start end of the opening proposed site. Engraving of the V-shaped and linear half-cut grooves are made by a laser beam, the depth thereof, as claimed in claim 1 or 2, characterized in that the extent not penetrate the sealant layer according to any one of Easy-open packaging bag.

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