JP2020006956A - Packaging bag for roll paper - Google Patents

Abstract

To provide a packaging bag for roll paper capable of simplifying opening work of a packaging bag, forming an opening for taking out a roll paper without causing "unnecessary tearing", and improving a storage state of unused roll paper after opening.SOLUTION: Substantially triangle folding part is formed on a right and left of a cylinder opening end on an upper opening end edge of a vinyl cylinder held in a substantially rectangle. A front and rear cover body having a tip-to-end welded shape is folded and formed in a state of overlapping on this substantially triangular fold part. The front and rear cover body is configured to be transformed into a slanted tension when the tip-to-end part is pulled up and strained. In addition, a hole for finger is formed in the tip-to-end part of the front and rear cover body. A break line branched into two from the tip-to-end part to the front and rear cover body is engraved. The break line forms each of the engraved grooves into an arc-shaped or mountain-shaped expanded groove and continuously provided at regular intervals. And a front and rear cover body surface is pressed by a palm in a state of transforming into the slanted front and rear cover body to configure to be broken through the engraved grooves.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a packaging bag for roll paper.

  2. Description of the Related Art Conventionally, roll paper packaging bags (hereinafter simply referred to as packaging bags) formed of a film such as resin vinyl have been widely used as packaging bags for packaging roll paper such as kitchen paper and toilet rolls in a plurality of stacked layers. are doing.

  In such a packaging bag, from the opening line formed in the center of the upper end surface of the packaging bag, make a bifurcated branch line along the upper end surfaces of the left and right packaging bags, and place the opening line first. After the rupture, the wrapping bag is successively ruptured along a bifurcated break line on the upper end surface, so that the upper surface of the wrapping bag can be easily opened to take out the roll paper contained therein ( For example, see Patent Literature 1 and Patent Literature 2.)

Japanese Utility Model Publication No. 60-8260 Japanese Patent No. 3153528

  However, at the bifurcated break line on the top of these packaging bags, the packaging bag is not broken exactly along the break line, but breaks from the break line and breaks in multiple directions. No part can be formed.

  The reason is the shape of the discontinuous hole of the breaking line as described below and the opening work form of tearing the film along the breaking line. The breaking line formed on the upper surface of the packaging bag is formed by penetrating a plurality of linear or dot-shaped engraving grooves by arranging them on the same line with a connecting portion having a predetermined width interposed therebetween.

  That is, the breaking operation of the breaking line is performed by pulling the starting line from the starting end to the ending portion along the breaking line, and the breaking direction of the breaking line is performed along the adjacent engraved groove.

  As described above, the breaking operation along the breaking line in the conventional packaging bag is performed by pulling up the film surface surrounded by the bifurcated breaking line on the upper end surface of the packaging bag along the breaking line. A tear in an eccentric direction occurs in the middle part, and it is not performed exactly along the break line, and the roll take-out opening cannot be formed correctly.

  Mechanically, the stress when the opening portion is pulled up from the bag surface is a stress in an upper direction (outer direction of the bag) orthogonal to the surface direction of the film surface.

  Such an upward tensile stress is applied to a joint portion between adjacent engraved grooves, and the tensile stress is shifted from the engraved groove to the joint portion by an uneven load in the tensile direction, and the tensile stress is smoothly applied from the joint portion. A predetermined extraction opening cannot be formed in many cases because the protrusion does not reach the next engraved groove and does not break along a predetermined breaking line due to a protruding burst.

  If an excessively upward stress is applied to the bag surface, the stress is combined with the bending deformation of the bag and the extension deformation of the joint portion, and the bias is shifted from the extension direction of the cut groove end of the breaking line. Load will be applied in the twisting direction.

  As a result, the stress in the eccentric torsion direction generates a “eccentric notch” that is displaced from the direction of extension of the break line at the joint portion, and the “skew notch” triggers the opening portion or the bag body deviating from the break line. Causing "useless tears".

  As described above, in the conventional packaging bag, when an upward stress is applied to the bag surface, the opening portion cannot be broken correctly along the breaking line on the upper surface of the bag body, and the packaging bag is damaged and stored in the bag. The storage condition of unused roll paper was worsened.

  The present invention has been made in view of the above circumstances, and correctly breaks the opening portion along the extension direction of the break line without causing `` unnecessary tearing '' in the packaging bag, and roll paper on the bag upper surface. An opening for taking out can be formed, the opening operation of the packaging bag can be easily performed, and after opening, the stored state of the unused roll paper stored is good for roll paper. Provide packaging bags.

  In order to solve the above-mentioned conventional problems, in the roll paper packaging bag according to the present invention, substantially triangular folds are formed on the left and right sides of the opening end of the cylindrical body at the upper opening edge of the vinyl cylinder maintained in a substantially square shape. Then, the front and rear cover bodies having the front end welded shape are bent and formed in an overlapping state on the substantially triangular folded portion, and the front and rear cover bodies are inclinedly transformed when the front end joint is pulled up and tightened. In addition, a finger hole is formed in the front end of the front and rear cover body, and a bifurcated break line is engraved from the front end of the front body to the front and rear cover body. Grooves are formed in arc-shaped or mountain-shaped widening grooves and are provided continuously at regular intervals, and can be broken along the breaking line by the downward pressing force of the palm on the front and rear cover bodies that have been transformed into tension. It has the feature of having comprised to it.

  According to the present invention, substantially triangular folds are formed on the left and right sides of the open end of the cylindrical body at the upper opening edge of the substantially cylindrically shaped vinyl cylindrical body, and the front end is overlapped on the substantially triangular fold. The front and rear cover body is formed by bending the front and rear cover body, and the front and rear cover body is configured to be inclined and transformed when the front end is pulled up and tightened. , A finger hole is formed, a bifurcated break line is engraved from the front end fitting part to the front and rear cover body, and the break line is formed by forming each engraved groove into an arc-shaped or mountain-shaped expanded groove. And, it is provided continuously at a constant interval, and it is configured to be able to break along the breaking line by the downward pressing force by the palm on the front and rear cover body which has been transformed into tension, so that the front and rear cover parts are pulled up in advance and the front and rear cover bodies are pulled up. Tension obliquely, and lower the film direction When applying a pressing stress, lower pressing stress in time 設溝 end can be effectively concentrated.

  As a result, it is possible to generate a “cut line” in which the extension direction of the enlarging end of the engraved groove is a tearing direction at the joint portion, and the cut lines extending from the ends of the adjacent engraved grooves can be generated. By intersecting with each other, the connecting portion interposed between the engraved grooves can be accurately torn.

  That is, the opening portion for taking out the roll paper can be formed on the upper surface of the bag by properly breaking the opening portion along the extension direction of the breaking line without causing “unnecessary tearing” in the packaging bag. Can easily be opened, and after opening, there is an effect that the stored state of unused roll paper can be improved.

  Further, the front end fitting portion is composed of a seal portion formed by welding along the width direction of the packaging bag, and a grip portion for manually gripping the seal portion, and the seal portion is intermittently formed. Due to the formation of the welding, in the roll paper packaging operation, the air that has flowed in when the roll paper is inserted upward from the lower opening of the bag body into the bag body is stored in the gap between the seal portions. When the air is exhausted to the outside, an abnormal increase in the internal pressure in the upper portion of the bag body is suppressed, and there is an effect that the seal portion and the break line can be prevented from being damaged from the inside of the bag body.

  Further, the grip portion includes a plurality of point-like or linear engraving grooves extending vertically from an upper edge of the grip portion and connected to an expanded top portion of the break line at a tip thereof. Since the break line is formed, the grip portion is pulled left and right around the second break line, thereby generating a cut along the second break line at the center of the grip portion and dividing the grip portion into right and left. The upper part of the bag body can be divided into left and right parts while extending the cut along the downwardly expanding breaking line that branches off at the end of the second breaking line, leaving the opening part in the center. This has the effect that the opening for taking out the roll paper can be made large.

  Further, since the second breaking line is formed so as to be shifted in the left-right direction on the front and back surfaces of the grip portion, the tensile load applied at the time of carrying is dispersed, thereby preventing the grip portion from being inadvertently split right and left. There is an effect that can be done.

FIG. 4 is a perspective view showing a roll bag stored state of the packaging bag according to the present invention. It is a front view showing the packaging bag concerning a 1st embodiment. It is an enlarged front view showing the packaging bag concerning a 1st embodiment. It is AA sectional drawing of the packaging bag which concerns on 1st Embodiment. It is a partial enlarged view of a break line concerning a 1st embodiment. It is a partial enlarged view of a break line concerning a 1st embodiment. It is a partial enlarged view of a break line concerning a 1st embodiment. It is explanatory drawing which shows the process of storing roll paper in the packaging bag which concerns on this invention. It is explanatory drawing which shows the process of storing roll paper in the packaging bag which concerns on this invention. It is explanatory drawing which shows the opening process of the packaging bag which concerns on this invention. It is explanatory drawing which shows the opening process of the packaging bag which concerns on this invention. It is explanatory drawing which shows the opening process of the packaging bag which concerns on this invention. It is explanatory drawing which shows the opening process of the packaging bag which concerns on this invention. It is an enlarged front view showing the packaging bag concerning a 2nd embodiment. It is AA sectional drawing of the packaging bag which concerns on 2nd Embodiment. It is a perspective view which shows the opening form of the packaging bag which concerns on 2nd Embodiment. It is a perspective view which shows the opening form of the packaging bag which concerns on 2nd Embodiment. It is an enlarged front view showing the packaging bag concerning a 3rd embodiment. It is an enlarged front view showing the packaging bag concerning a 4th embodiment.

  The gist of the present invention resides in that a substantially triangular fold is formed on the left and right ends of the cylindrical opening at the upper opening edge of the substantially cylindrically shaped vinyl cylindrical body, and the leading end is overlapped on the substantially triangular fold. The front and rear cover body is formed by bending the front and rear cover body, and the front and rear cover body is configured to be inclined and transformed when the front end is pulled up and tightened. , A finger hole is formed, a bifurcated break line is engraved from the front end fitting part to the front and rear cover body, and the break line is formed by forming each engraved groove into an arc-shaped or mountain-shaped expanded groove. Roll paper packaging bag, characterized in that the packaging bag is provided continuously at regular intervals and is configured to be capable of breaking along a breaking line by a downward pressing force of the palm on the front and rear cover bodies that have been transformed into tension. Is to do.

[First Embodiment]

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a packaging bag in which roll paper is stored, FIG. 2 is a front view showing the packaging bag according to the embodiment, FIG. 3 is an enlarged front view showing the packaging bag according to the embodiment, and FIG. Is a sectional view taken along the line AA of the packaging bag according to the present embodiment, and FIGS. 5 to 7 are partially enlarged views of broken lines according to the present embodiment.

  The packaging bag A for roll paper according to the present embodiment has a substantially triangular fold at the left and right sides of the opening end of the cylindrical body, as shown in FIGS. The front and rear cover bodies 10b and 10b 'having the welded shape of the front end portion are formed in a bent state so as to overlap the substantially triangular folded portion 3 by forming the portion 3. Gazettes 1a and 1a 'are formed on both sides of the vinyl cylinder 1, as shown in FIG.

  The substantially triangular folded portion 3 is a portion corresponding to the upper right and left side surfaces of the substantially rectangular vinyl cylinder 1, and the upper ends of the gussets 1 a and 1 a ′ which are folded inward at the left and right of the vinyl cylinder 1 are welded by the front end fitting portion 2. It is formed.

  The front and rear cover bodies 10b and 10b 'are configured to be inclinedly transformed when the front end fitting portion 2 is pulled up and tensioned. Specifically, the front and rear cover bodies 10b and 10b 'constitute an upper portion of the bag body 10 for accommodating the roll paper R together with the substantially triangular folded portion 3.

  The front end fitting portion 2 of the front and rear cover bodies 10b and 10b 'includes a seal portion 30 formed by welding along the width direction of the packaging bag A, and a grip portion 20 for manually gripping the seal portion 30 above. Make up.

  That is, the packaging bag A basically includes the bag main body 10, the grip 20 provided above the bag main body 10, and the seal 30 between the bag main body 10 and the grip 20. I have.

  As shown in FIGS. 2 and 3, in addition to the seal portion 30 that vertically separates the grip portion 20 and the bag body portion 10, the grip portion 20 extends along the upper end of the grip portion 20 at a position above the seal portion 30. An upper end seal portion 31 extending and extending, and right and left end seal portions 32 and 32 ′ extending along the left and right ends of the grip portion 20 between the upper end seal portion 31 and the seal portion 30 are formed by welding.

  In addition, a rectangular reinforcing piece 21 for reinforcing the grip 20 is superposed at the center of the grip 20.

  Specifically, the reinforcing piece 21 is welded by the upper end seal part 31 and the seal part 30 extending so as to cross the upper and lower edges of the reinforcing piece 21 at the center of the gripping part 20, and the left and right edges are reinforced. The left and right end seal portions 33, 33 'extending along the left and right ends of the piece 21 are welded and overlapped.

  Each of the seal portions 30, 31, 32, 32 ', 33, 33' in the grip portion 20 is formed by intermittent welding along a certain direction.

  That is, each of the seal portions 30, 31, 32, 32 ', 33, 33' has a plurality of seal spots 30a, 31a, 32a, 32a ', 33a, 33a' and vent holes 30b, 31b, 32b, 32b ', respectively. , 33b, and 33b '.

  Taking the seal part 30 as an example, specifically, the seal part 30 includes a substantially square seal spot 30a formed at a predetermined interval in a certain direction as shown in FIGS. 3 and 4, and a seal spot 30a. A ventilation hole 30b is formed between them, and the ventilation hole 30b allows the inside and the outside of the bag body 10 to communicate with each other.

  In particular, as shown in FIG. 4, the seal portion 30 and the upper end seal portion 31 in the present embodiment have the width of the ventilation holes 30 b and 31 b formed at both ends of the grip portion 20, and the width of the through hole formed at the center of the grip portion 20. The width of the pores 30b and 31b is wider than the width of the pores 30b, thereby improving the efficiency of exhausting the internal air during the work of inserting the roll paper R.

  In short, the seal portion only needs to form a ventilation hole for exhausting the internal air at the time of the insertion operation of the roll paper R at a predetermined location continuously formed by welding in a certain direction. For example, the ventilation holes 30b and 31b may be formed only at both ends of the grip portion 20. Further, the shape of the seal spot 30a forming each seal portion 30 is not limited to a square shape, and may be, for example, a linear shape, a circular shape, or a triangular shape.

  A finger hole 23 is formed in the front end fitting portion 2 of the front and rear cover bodies 10b and 10b '. Specifically, in the left half portion and the right half portion of the reinforcing piece 21 at the center portion of the grip portion 20, two semicircular engraved grooves are formed so as to face each other in the left-right direction so as to form a substantially circular shape. The finger insertion portions 22 and 22 ′ are formed to form finger holes 23.

  Further, a bifurcated break line 40 is engraved from the front end fitting portion 2 to the front and rear cover bodies 10b and 10b '.

  Specifically, at the center of the front and rear cover bodies 10b and 10b ', as shown in FIGS. 2 and 3, an opening breaking line 40 extending downward and expanding, and the inside surrounded by the breaking line 40, are shown. And the unsealing portion 50 are formed.

  As shown in FIG. 3, the elongate shape of the breaking line 40 in the front and rear cover bodies 10b and 10b 'is right and left around a center vertical cutting line C1 which vertically crosses the widthwise center position of the bag body 10 (packaging bag A) in a front view. The target is a mountain shape with a downward expansion.

  More specifically, the break line 40 is positioned on the central vertical section line C1 of the bag main body 10 at the expanded top section 40a, and is also symmetrical with respect to the central vertical section line C1 from the expanded top section 40a. It is constituted by two left and right inclined portions 40b and 40b 'that incline outward, and left and right side portions 40c and 40c' that are bent at the ends of the left and right inclined portions 40b and 40b 'and extend in the vertical direction of the bag body 10. I have.

  The extension shape of the breaking line 40 is not particularly limited as long as it is a downwardly expanding shape. For example, a curved mountain shape, a bent mountain shape, a U-shaped shape, or a square shape that expands downward. Good. It should be noted that a stop hole for preventing tearing may be formed at the end of the left and right side portions 40c and 40c 'of the breaking line 40.

  The opening portion 50 has a lower end edge integrated with the front and rear cover members 10b and 10b 'at the center of the front and rear cover members 10b and 10b' (upper part of the bag body 10), and the other peripheral edge is surrounded by a break line 40. It is a substantially mountain-shaped portion that has been broken, and can be formed along the breaking line 40 to form a takeout opening.

  The opening portion 50 has an area capable of forming a takeout opening through which the roll paper R stored in the bag body 10 can be taken out. That is, the area of the unsealing portion 50 is set to be at least larger than the circular area of the cylindrical shape of the roll paper R.

  The expanded top portion 40a of the breaking line 40 is disposed vertically below the central portion of the grip portion 20 beyond the seal portion 30 in the front end fitting portion 2 as shown in FIGS.

  In other words, the unsealing portion 50 is configured to have a top seal portion 30c which is a part of the seal portion 30 on the top portion 50a.

  With such a configuration, when the packaging bag A is lifted via the grip portion 20, careless rupture of the opening portion 50 without transmitting inadvertent load stress to the breaking line 40 below the seal portion 30 is performed. Has been prevented.

  In addition, if the breaking line 40 is formed so that the expanded top portion 40a is contained within the front and rear cover members 10b and 10b ', the opening portions 50 and 50' on the front and back of the bag body 10 are not welded and connected to each other, and are free. Since it is in the state, the opening operation of the packaging bag A can be facilitated.

  Further, as shown in FIGS. 5 and 6, the breaking line 40 is an arc-shaped or chevron-shaped expanding groove for each engraving groove 41, and is maintained at a constant interval so as to open in the same direction. It is provided continuously.

  That is, the break lines 40 are arranged on the same line at a predetermined interval, and are formed between a plurality of engraving grooves 41 formed in an expanded shape so as to open in the same direction. And a connecting portion 42 interposed therebetween.

  The width D1 of the connecting portion 42 is 1 to 1.5 times the width D2 of the engraved groove 41 (the length of a virtual chord connecting between both ends of the engraved groove). The width D1 is about 4 mm to 6 mm, and the width D2 of the engraving groove 41 is about 2 mm to 4 mm.

  Further, as shown in FIGS. 5 and 6, the plurality of engraved grooves 41 each have an imaginary chord line connecting between the expanded ends of the engraved grooves at the center of the upper portion of the bag body 10. It is arranged on the virtual outline M <b> 1 of the unsealing part 50 and is formed so as to expand in the expanding direction toward the inside or outside of the unsealing part 50.

  As shown in FIG. 6, each of the engraving grooves 41 has a cutting line 43, 43 'extending from an end 41a, 41a' of an adjacent engraving groove 41, 41 '. The openings are formed so as to cross each other.

  That is, each of the engraving grooves 41 is expanded so that the virtual extension straight lines (cut lines 43, 43 ') of the ends 41a, 41a' of the adjacent engraving grooves 41, 41 ',. are doing.

  The shape of the engraved groove 41 is formed in an arc shape or a mountain shape, so that the cut lines 43 generated in the connecting portion 42 along the extension direction of the engraved groove ends 41a, 41a 'are surely cross-flowed. And In addition, the term “arc-shaped” or “crest-shaped” refers to a shape in which ends of the same shape are separated from each other and outwardly inclined.

  5 and 6, an arc-shaped or substantially square-shaped flap piece 44 is formed inside the cut groove 41. As shown in FIG. In other words, a plurality of flap pieces 44 are formed at predetermined intervals on the periphery of the unsealing portion 50 or the take-out opening in accordance with the plurality of engraving grooves 41.

  As shown in FIG. 7, the flap piece 44 is displaced from the film surface position outside the flap piece 44 when a downward pressing stress is applied to the surface direction of the tensioned film surface as shown in FIG. The downward pressing stress is effectively concentrated on 41a '.

  As a result, it is possible to generate a “cut line” in the joint portion 42 in which the extension direction of the engraved groove ends 41a, 41a ′ of the engraved grooves 41, 41 ′ is a tearing direction, and the adjacent engraved groove 41, When the cut lines extending from the ends 41a, 41a 'of the 41' intersect with each other, the connecting portion 42 interposed between the engraved grooves can be accurately torn.

  In addition, by providing another break line similar to the break line 40 inside or outside the break line 40, it is also possible to form a multi-stage plural break line such as a two-stage or three-stage break line. it can.

  That is, on the inside and / or outside of the break line 40, between the plurality of engraved grooves 41, 41 ′ of the break line 40 and along the extension direction of the end portions 41 a, 41 a ′ along the contour shape of the break line 40. Another breaking line in which the engraving groove is arranged at the tip position may be provided.

  Specifically, the engraved grooves are arranged on virtual extension straight lines (cut lines 43, 43 ') extending from the ends 41a, 41a' of the adjacent engraved grooves 41, 41 ',. Another break line is formed inside or outside the break line 40 to be formed. It should be noted that the shape of the engraved groove forming another break line is not particularly limited, and may be linear or arcuate.

  With such a configuration, the cut lines extending from the end portions 41a, 41a 'of the cut grooves 41, 41' of the break line 40 merge at the cut grooves of the other break lines. The cut groove in the line functions as an auxiliary line for the intersection and merging of the cut lines, and it is possible to surely break the joint portion 42 interposed between the cut grooves 41 and 41 ′ of the break line 40. .

  Next, an example of a method for manufacturing the packaging bag A will be briefly described. First, a break line 40 is formed on the vinyl cylinder 1 at regular intervals by a break line cutter while the vinyl cylinder 1 is being fed.

  The strip-shaped roll film serving as the reinforcing piece 21 is extended to the sealing machine so as to overlap the central portion of the vinyl cylinder 1, and the sealing machines form the respective seal portions 30, 31,. Is cut to form the gripping portion 20.

  Such a vinyl tubular body 1 is finally cut into a predetermined length capable of storing the roll paper R and folding and closing the lower opening of the bag body 10 to form the packaging bag A.

  Next, a method of storing roll paper in the packaging bag A will be described. 8 and 9 are explanatory diagrams showing a process of storing roll paper in the packaging bag A.

  As shown in FIG. 8, the packaging bag A has a substantially rectangular roll paper group R1 formed by arranging a plurality of roll papers R in parallel, from the lower opening 10c of the bag body 10 to the inside of the bag body 10. The paper R is inserted by being pushed in such a manner that the cylindrical axis direction of the paper R is along the longitudinal direction of the bag body 10.

  In this embodiment, the roll paper group R1 stored in the packaging bag A is composed of two roll papers R, two in the width direction of the bag body 10, two in the depth direction, and three in the longitudinal direction. It has a shape.

  As shown in FIG. 1, the roll paper group R <b> 1 is made to enter the inside of the bag main body 10 until the outer peripheral edge of the roll paper abuts the left and right triangular folds 3 and 3 ′ constituting the upper end surface of the bag main body 10.

  As the roll paper group R1 enters, the flat bag main body 10 is pushed and spread out the left and right gussets 1a and 1a ', and air flows into the bag main body 10.

  The inflow air moves to the upper portion of the bag main body 10 by the front end face of the roll paper group R1, and is exhausted to the outside through the plurality of ventilation holes 30b, 31b, of the seal portions 30, 31,. Is done.

  In other words, by suppressing the formation of compressed air inside the bag body 10 by exhausting the inflow air through the ventilation holes 30b, 31b, of the respective seal portions 30, 31,. The breakage of the seal portion 30 and the break line 40 from inside the portion 10 can be prevented.

  The bag main body 10 in which the roll paper group R1 is inserted as described above becomes a packaging bag A containing the roll paper R shown in FIG. 1 by welding and closing the lower opening 10c.

  Next, a method of opening the packaging bag A in which the roll paper R is stored will be described. FIG. 10 to FIG. 13 are explanatory views showing the opening process of the packaging bag A in which the roll paper R is stored.

  First, the unopened packaging bag A is placed and erected on the floor surface, the grip portion 20 of the front end fitting portion 2 is pulled upward, and tension is applied to the front and rear cover members 10b and 10b 'below the front and rear cover members. The body 10b, 10b 'is nervous.

  In such a tensioned state of the front and rear cover bodies 10b and 10b ', the upper peripheral wall of the bag body 10, that is, the substantially triangular folded portions 3, 3', the front cover body 10b, and the rear cover body are provided above the roll paper group R1. 10b 'forms a substantially triangular prism-shaped internal space S formed by the inner space S.

  This internal space S functions as a spare space for pushing the opening portion 50 inward from the outside of the bag main body 10 and breaking it, and is shown in FIGS. 3 and 4 with the tension of the peripheral wall film on the upper part of the bag main body 10. As described above, the air holes 30 b, 31 b, of the seal portions 30, 31, are formed by air taken in from the outside of the bag body 10.

  Then, as shown in FIG. 11, the front and rear cover bodies 10b and 10b 'are pressed by the palms of the front and rear cover bodies 10b and 10b' in the tensioned state of the front and rear cover bodies 10b and 10b 'to break through the engraved grooves 41 and 41'. .

  Specifically, the unsealing portion 50 is pushed in such a manner as to incline downward on the palm surface or the like toward the internal space S, and is broken at the center of the front and rear cover bodies 10b and 10b '.

  In accordance with the downward pressing force applied to the opening portion 50, the flap pieces 44 of the breaking line 40 (peripheral edge of the opening portion 50) are, as shown in FIG. Is displaced.

  At this time, the pressing stress concentrates on the cut groove end 41a (the start end of the joint portion 42), and a cut line 43 is generated along the extension direction of the cut groove end 41a.

  When the opening portion 50 is further pushed into the internal space S side, the cut line 43 from the engraved groove end 41a is elongated, and as shown in FIG. 6, the engraved grooves 41, 41 'are formed. The cutting lines 43, 43 ', extending from the groove ends 41a, 41a', respectively, merge with each other, and as shown in FIG. 12, between the engraved grooves 41, 41 ',. Is cut off at the connecting portion 42 interposed between them.

  The front opening portion 50 is connected to the rear opening portion 50 ′ via the top seal portion 30c. However, the front opening portion 50 receives the stress of the downward inclination during the push-in opening operation, and the rear opening portion 50 ′. 'Leave from the top.

  In this manner, the opening portion 50 is completely broken along the breaking line 40 as shown in FIG. 12, and finally, the roll paper R is positioned at the center of the front and rear cover bodies 10b and 10b 'as shown in FIG. It is assumed that the packaging bag A formed with the opening 60 for taking out is opened.

  In this openable packaging bag A, the flap pieces 44 and the connecting portion 42 remain on the outer peripheral edge of the unsealing portion 50 and the inner peripheral edge of the take-out opening 60, and as shown in FIG. In addition, the inner peripheral edge of the take-out opening 60 has a jagged uneven shape derived from the cut shape of the break line 40.

  As described above, according to the packaging bag A according to the present embodiment, the opening portion 50 can be formed by pushing the opening portion 50 at the upper portion of the bag main body 10 with a single touch and breaking the opening portion 60, thereby simplifying the opening operation of the packaging bag A. be able to. In addition, even when the opening portion 50 is pulled up to the outside of the bag main body portion 10, it is needless to say that the opening 60 for taking out can be formed in the upper portion of the bag main body portion 10.

  That is, even when a stress perpendicular to the plane direction of the film is applied, the opening portion 50 is correctly broken along the breaking line 40 without causing “unnecessary tearing” in the opening portion 50 or the bag body 10. As a result, the packaging bag A can be prevented from being damaged as much as possible, and the opening 60 for taking out the fore edge can be correctly formed in the upper portion of the bag main body 10.

  Moreover, in the unsealed packaging bag A, the unsealing portion 50 is integrated with the bag body 10 at the lower end edge, so that the opening 60 for taking out is closed to remove dust from the remaining unused roll paper. It functions as a cover that allows for protection.

  In particular, the flap pieces 44 and the connecting portions 42 forming the jagged irregularities on the outer peripheral edge of the opening portion 50 and the inner peripheral edge of the opening portion 60 are shifted from each other and overlap each other. 50 engages to allow the removal opening 60 to be closed.

  Further, since the break point is limited to the unsealing portion 50 while preventing the packaging bag A from being broken by the break line 40, the storage function of the bag body portion 10 can be reliably held, and the roll paper R Can be diverted as a bag such as a garbage bag.

[Second embodiment]
Next, a packaging bag B according to a second embodiment will be described. FIG. 14 is an enlarged front view showing the packaging bag according to the present embodiment, FIG. 15 is a cross-sectional view taken along the line A-A of the gripper according to the present embodiment, and FIGS. 16 and 17 show an opening form of the packaging bag according to the present embodiment. FIG. In addition, below, about the structure similar to the above-mentioned packaging bag A, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  In the packaging bag B according to the present embodiment, as shown in FIG. 14, a virtual tear line formed by combining the second break line of the gripper 20 and the break line of the bag body 10 at the top of the packaging bag D is viewed from the front. It is formed so as to have a substantially inverted Y-shape.

  The packaging bag B, unlike the packaging bag A, forms a second break line 70 for vertically cutting the grip portion 20 at the center position in the width direction of the grip portion 20.

  In other words, the gripping portion 20 extends from the upper edge of the gripping portion 20 in a downward direction, and a plurality of point-shaped or linear engraved grooves connected to the expanded top portion 40a of the breaking line 40 for opening at the tip thereof. A second break line 70 is formed.

  The second break line 70 is formed so as to penetrate the upper and lower surfaces of the vinyl cylinder 1, and the expanded top 40 a of the break line 40 connected to the second break line 70 has a wide half that expands downward. It is formed as an arc-shaped engraving groove 80.

  Further, the reinforcing piece 21 provided on the grip portion 20 has a plurality of point-like or straight-like pieces extending downward from the upper edge of the reinforcing piece 21 and connected to the expanded top 40a of the breaking line 40 at the tip. A third break line 71 composed of an engraved groove is provided.

  Moreover, the second breaking line 70 of the grip 20 and the third breaking line 71 of the reinforcing piece 21 are formed so as to be shifted from each other in the left-right direction as shown in FIG.

  That is, the two break lines 70 and 71 are formed to extend vertically in the vicinity of the left and right sides around the central longitudinal line C1 of the gripper 20 and disperse the tensile load applied when being carried. Left and right separation is prevented.

  The packaging bag B having such a configuration cuts the breaking line 40, the second breaking line 70, and the third breaking line 71 when the roll paper R is taken out, and the gripping portion 20 including the reinforcing piece 21 is separated into right and left. At the same time, a cut is formed in the break line 40 on the upper part of the bag body 10 continuously.

  That is, when the both ends of the gripper 20 are pulled, the gripper 20 separates into the left and right gripper pieces 24 and 24 ′ as shown in FIG. 16 along the second break line 70 and the third break line 71. At the same time, the front and rear cover bodies 10b and 10b 'are separated as left and right upper wall pieces 10d and 10d', so that small opening openings 61 and 61 'can be formed on the left and right sides of the bag body 10.

  Specifically, when the second break line 70 and the third break line 71 of the grip portion 20 are torn, a semi-arc-shaped engraved groove corresponding to the expanded top portion 40a of the break line 40 at the tip end. The breaking line 40 extending at the left and right ends of the engraved groove 80 at the right and left ends of the groove 80 is continuously broken along the left and right inclined portions 40b.

  At this time, since the two front and rear unsealing portions 50 and 50 ′ of the bag body 10 are connected via the top seal portion 30 c, the unsealing portions 50 and 50 ′ are opened at the center of the upper portion of the bag body 10 while being opened. The films of the bag body 10 on the left and right sides of the part 50 are separated as left and right upper wall pieces 10d and 10d '.

  As a result, as shown in FIG. 16, the small opening portions 61 and 61 'can be formed on the left and right sides of the front and rear cover bodies 10b and 10b'.

  Further, the front and back opening portions 50 and 50 ′ connected via the top seal portion 30 c effectively cover over the upper surface of the roll paper R stored in the bag body 10, and are stored until the entire roll paper R is taken out. Functions as a dust remover.

  In storage, it is preferable to close the opening by moving the left and right gripping pieces 24, 24 'having the gripping section 20 longitudinally to the center to ensure dust removal.

  In addition, if the top seal portion 30c of the opening portion 50 is torn, a large take-out opening portion 62 can be formed over the upper portion of the packaging bag B as shown in FIG.

  Further, in the present embodiment, the opening method in which the gripper 20 is divided into left and right parts and the upper part of the bag body 10 below the left and right parts is divided into left and right parts, but as described in the first embodiment, FIG. As shown in FIG. 17, the opening portion 50 is broken first to form an opening 60 for taking out the fore-edge in the upper part of the bag body portion, and then the grip portion 20 is divided into right and left portions to thereby obtain the fore-edge shown in FIG. Of course, the take-out opening 62 can be formed.

  As described above, according to the packaging bag B, the size, number, position, and the like of the diameters of the roll paper take-out openings are changed according to the user's preference and usage, thereby forming a wide variety of openings. be able to.

[Third embodiment]
Next, a packaging bag according to a third embodiment will be described. FIG. 18 is an enlarged front view showing the packaging bag according to the present embodiment.

  In the packaging bag C according to the present embodiment, as shown in FIG. 18, a virtual tear line formed by combining the second breaking line of the gripper 20 and the breaking line of the bag body 10 at the top of the packaging bag C has a front view H. It is formed so as to have a character shape.

  That is, the two second breaking lines 72 and 72 ′ extend so as to extend longitudinally through the gripping portion 20 at a predetermined position in the left-right direction of the gripping portion 20. It is configured to be connected to the side portions 80b, 80b '.

  Specifically, the second breaking lines 73 and 73 ′ are formed on the left and right sides of the reinforcing piece 21 overlapped with the gripping portion 20, along the vertical direction of the gripping portion 20, beyond the seal portion 30, and the front and rear cover bodies 10 b and 10 b 'Two are formed to extend to the middle part.

  Further, the break line 80 of the bag body 10 is formed in a U-shape that is expanded downward when viewed from the front, and includes left and right side parts 80b, 80b ′ along the vertical direction of the bag body part 10, and left and right side parts 80b. , 80b 'between the start ends thereof.

  That is, the second break lines 73 and 73 ′ and the left and right side portions 80 b and 80 b ′ of the break line 80 are configured to be connected by the same line at the grip 20 and the bag body 10.

  With such a configuration, when the packaging bag C is opened, the opening portions 50 and 50 ′ of the bag body 10 and the central portion of the gripping portion 20 above the bagging portion 20 are left at the center position, and the The right and left side portions 80b, 80b 'of the break line 80 in the bag body 10 are torn so as to be continuous with the break lines 73, 73' of FIG. 'Can be formed twice.

  In addition, a large opening 62 can be easily formed by separating a part of the grip 20 from the opening 50 at the horizontal portion 80a of the breaking line 80.

[Fourth embodiment]
Next, a packaging bag E according to a fourth embodiment will be described. FIG. 19 is an enlarged front view showing the packaging bag according to the present embodiment.

  As shown in FIG. 19, the packaging bag D according to the present embodiment has a virtual tear line formed by combining the second breaking line of the gripper 20 and the breaking line of the bag body 10 at the top of the packaging bag D as viewed from the front. It is formed so as to have a triangular shape.

  Specifically, the two second breaking lines 73 and 73 'are arranged such that the seal portions 30 are inclined to the right and left outward from the center of the upper edge of the grip portion 20 inside the finger insertion portions 22 and 22'. The front and rear cover members 10b and 10b 'are formed so as to extend to the middle part.

  In addition, the break line 81 of the bag body 10 is formed in a trapezoidal shape that expands downward as viewed from the front, and includes left and right inclined side portions 81b and 81b ′ that are inclined left and right outward, and left and right side portions 81b and 81b. The horizontal portion 81a extends right and left between the starting ends of the pair 81b '.

  That is, the second break lines 73 and 73 ′ and the left and right side portions 81 b and 81 b ′ of the break line 80 are connected to each other on the same line by the grip 20 and the bag body 10.

  With such a configuration, when the packaging bag E is opened, similarly to the packaging bag D, the opening portions 50 and 50 ′ of the bag body 10 and the central portion of the grip portion 20 above the bag body 10 are left at the central position. Then, the left and right sides 81b and 81b 'of the break line 81 in the bag body 10 are torn so as to be continuous with the second break lines 73 and 73' of the grip portion 20, and as shown in FIG. Two small opening portions 61, 61 'can be formed on both sides of the upper portion of the upper portion 10.

  In addition, by separating a part of the gripping portion 20 from the opening portion 50 by the horizontal portion 81a of the breaking line 81, the large opening 62 can be easily formed as shown in FIG.

  In addition, when the gripper 20 is gripped by penetrating the finger insertion portions 22 and 22 ′, the two second break lines 73 and 73 ′ inside the gripper 20 are gripped in the palm. Thus, there is an effect that it is possible to prevent the gripping portion 20 from being inadvertently broken during carrying without applying careless tensile stress to the second breaking lines 73 and 73 '.

  As described above, according to the roll paper packaging bag according to the present invention, the opening portion is correctly broken along the extension direction of the breaking line without causing “unnecessary tearing” and the upper portion of the bag body portion An opening for taking out can be formed in the opening, the opening operation of the packaging bag can be easily performed, and the stored state of unused roll paper can be improved after opening.

  That is, according to the present invention, a substantially triangular fold is formed on the left and right ends of the cylindrical opening at the upper opening edge of the substantially cylindrically shaped vinyl cylindrical body, and the vinyl triangular fold overlaps the substantially triangular fold. The front and rear cover body is bent to form a welded shape at the tip end, and the front and rear cover body is configured to be inclined and transformed when the front end is pulled up and tensioned. The finger hole is formed, and a break line is bifurcated from the front end fitting part to the front and rear cover body, and the break line is formed by turning each engraved groove into an arc-shaped or mountain-shaped expanded groove. Formed and provided continuously at a constant interval, the front and rear cover body is configured to be ruptured through the engraved groove by pressing the front and rear cover body surface with the palm in a state of tension transformation, so that the bag surface surface direction When perpendicular vertical stress is applied, it is surrounded by The inner flap pieces can be concentrated stresses in time 設溝 end by protruding vertically displaced in the bag surfaces effectively.

  As a result, it is possible to generate a “cut line” in which the extension direction of the engraved groove extends in the joining portion at the extending end direction, and the cut lines extending from the adjacent engraved groove ends cross each other. As a result, the connecting portion interposed between the engraved grooves can be accurately torn.

  That is, not only when a stress is applied along the plane direction of the bag surface but also when a stress perpendicular to the plane direction is applied, along the extension direction of the breaking line without causing `` useless tearing '' to the packaging bag. The opening part can be cut off correctly to form an opening for taking out the roll paper on the top of the bag, making it easy to open the packaging bag. This has the effect of improving the storage state of the device.

A Packaging bag 1 for roll paper 1 Vinyl cylindrical body 2 Tip fitting part 3 Triangular folded part 10 Bag body parts 10b, 10b 'Front and rear cover body 20 Gripping part 30 Seal part 40 Breaking line 41 Engraving groove 50 Opening part

In order to solve the above-mentioned conventional problems, in the roll paper packaging bag according to the present invention, substantially triangular folds are formed on the left and right sides of the opening end of the cylindrical body at the upper opening edge of the vinyl cylinder maintained in a substantially square shape. Then, the front and rear cover bodies having the front end welded shape are bent and formed in an overlapping state on the substantially triangular folded portion, and the front and rear cover bodies are inclinedly transformed when the front end joint is pulled up and tightened. In addition, a finger hole is formed in the front end of the front and rear cover body, and a bifurcated break line is engraved from the front end of the front body to the front and rear cover body. The groove is formed in an arc-shaped or mountain-shaped expanding groove, and is provided continuously at a constant interval. In addition, the central part of the front and rear covers is extended downward so as to be symmetrical with a downwardly expanding mountain shape. Forming a breaking line for opening and an inner opening portion surrounded by the breaking line. At the same time, of the crest-shaped breaking line of the downward expansion, the breaking line of the spreading crest located at the top of the crest is defined as a single arc-shaped or chevron-shaped crest breaking line, and further, an arc-shaped or chevron-shaped breaking line The free end openings are continuously formed at regular intervals to form a symmetrical imaginary broken rupture line to determine the rupture direction, and the rupture is caused by the downward pressing force of the palm on the tension-transformed front and rear cover bodies it characterized by being configured to be able to break along the fracture direction of the line.

According to the present invention, substantially triangular folds are formed on the left and right sides of the open end of the cylindrical body at the upper opening edge of the substantially cylindrically shaped vinyl cylindrical body, and the front end is overlapped on the substantially triangular fold. The front and rear cover body is formed by bending the front and rear cover body, and the front and rear cover body is configured to be inclined and transformed when the front end is pulled up and tightened. , A finger hole is formed, a bifurcated break line is engraved from the front end fitting part to the front and rear cover body, and the break line is formed by forming each engraved groove into an arc-shaped or mountain-shaped expanded groove. At the center of the front and rear cover body , and the inner opening surrounded by the breaking line for opening and the breaking line extending downward and symmetrically in the center of the front and rear cover body. And at the same time, at the top of the chevron, The break line at the top of the expansion is a simple arc-shaped or chevron-shaped top break line, and the arc-shaped or chevron-shaped free end openings at the break line are continuously symmetrically inclined at a certain interval. The virtual rupture line is formed to determine the rupture direction, and it is possible to rupture along the rupture line 's rupture direction by the downward pressing force of the palm on the front and rear cover bodies that have been transformed into tension. , The front and rear cover members are obliquely tensioned, and a downward pressing stress is applied to the surface direction of the tensioned film surface, whereby the downward pressing stress can be effectively concentrated at the end of the engraved groove.

The gist of the present invention resides in that a substantially triangular fold is formed on the left and right ends of the cylindrical opening at the upper opening edge of the substantially cylindrically shaped vinyl cylindrical body, and the leading end is overlapped on the substantially triangular fold. The front and rear cover body is formed by bending the front and rear cover body, and the front and rear cover body is configured to be inclined and transformed when the front end is pulled up and tightened. , A finger hole is formed, a bifurcated break line is engraved from the front end fitting part to the front and rear cover body, and the break line is formed by forming each engraved groove into an arc-shaped or mountain-shaped expanded groove. At the center of the front and rear cover body , and the inner opening surrounded by the breaking line for opening and the breaking line extending downward and symmetrically in the center of the front and rear cover body. At the top of the mountain at the same time The break line at the top of the widening shall be a simple arc-shaped or mountain-shaped top break line, and furthermore, the arc-shaped or mountain-shaped free end openings at the break line are continuously symmetrically inclined at a constant interval. A rupture line is formed by forming an imaginary line of rupture to determine the rupture direction , and the rupture can be performed in the rupture line along the rupture direction by a downward pressing force of the palm on the front and rear cover bodies that have been transformed into tension. It is to provide a packaging bag for roll paper.

As shown in FIG. 3, the elongate shape of the breaking line 40 in the front and rear cover bodies 10b and 10b 'is right and left around a center vertical cutting line C1 which vertically crosses the widthwise center position of the bag body 10 (packaging bag A) in a front view. is a chevron-shaped lower expansion to be symmetrical.

Specifically, the breaking line 40 is such that the expanded top portion 40a, which is a single arc-shaped or mountain-shaped top breaking line, is positioned on the central vertical cutting line C1 of the bag body 10, and the breaking line 40 is centered on the central vertical cutting line C1. The two left and right inclined portions 40c and 40c ' which are respectively inclined left and right outward from the expanded top portion 40a so as to be symmetrical, and are bent at the ends of the left and right inclined portions 40c and 40c' and extend along the vertical direction of the bag body 10. Left and right portions 40b, 40b ' .

The extension shape of the breaking line 40 is not particularly limited as long as it is a downwardly expanding shape. For example, a curved mountain shape, a bent mountain shape, a U-shaped shape, or a square shape that expands downward. Good. Note that a stop hole for preventing tearing may be formed at the end of the left and right side portions 40b and 40b ' of the breaking line 40.

In addition, as shown in FIG. 5 and FIG. 6, the plurality of engraved grooves 41 each have an imaginary chord line connecting the expanded ends of the engraved grooves at the center of the upper part of the bag body 10. That is, the arc-shaped or chevron-shaped free end openings in the breaking line are continuously formed at regular intervals to form a bilaterally symmetric inclined imaginary breaking line M1 , and the expanding direction is directed toward the inside or outside of the opening 50. It is formed so as to expand.

Claims (4)

At the edge of the upper opening of the vinyl cylinder,
A substantially triangular fold is formed on the left and right sides of the opening end of the cylindrical body, and the front and rear cover bodies of the tip end welding shape are bent and formed in an overlapping state on the substantially triangular fold,
In addition, the front and rear cover body is configured to be transformed into a slanted tension when the front end is pulled up and tensioned,
In addition, a hole for a finger is formed in a front end fitting portion of the front and rear cover body, and a bifurcated break line is engraved from the front end fitting portion to the front and rear cover body,
The breaking line is formed by forming each engraved groove in an arc-shaped or mountain-shaped expanded groove and continuously providing it at regular intervals, and is broken by the downward pressing force of the palm on the tension-transformed front and rear cover surfaces A packaging bag for roll paper, characterized in that the packaging bag can be broken along a line.   The front end fitting portion includes a seal portion welded and formed along the width direction of the packaging bag, and a grip portion for manually gripping the seal portion above, and the seal portion is formed intermittently by welding. The packaging bag for roll paper according to claim 1, wherein the packaging bag is used.   The grip portion has a second breaking line formed by a plurality of dotted or linear engraved grooves extending in the up-down direction and connected to the expanded top portion of the breaking line at the tip thereof. The packaging bag for roll paper according to claim 2, characterized in that: The gripping portion is provided with a reinforcing piece, and the reinforcing piece is formed of a plurality of point-like or linear notching grooves extending in the up-down direction and connected to the expanded top of the breaking line at the tip thereof. 4. The packaging bag for roll paper according to claim 3, wherein a breaking line is provided, and the second breaking line and the third breaking line are formed so as to be shifted from each other in the left-right direction. .

Images