JP2010105671A - Film for packaging article - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a film for packaging an article capable of preparing a pillow packaging bag in which a part with a required length can be easily and accurately opened with a large opening width. <P>SOLUTION: On the film A for packaging the article, two lines of cutting lines 2 and 2 with a width interval of a relatively wide width of about 1/3-1/2 of the breadth of a pillow packaging bag B to be prepared are scored in parallel at the central part in the width direction of a longitudinal strip film 1 with a definite width. Between these cutting lines 2 and 2, at each lengthwise interval of the pillow packaging bag B to be prepared, a projecting cut line 3 both ends of which intersect the cutting lines 2 and 2 is provided, and a film surrounded with the cut line 3 is formed into a knob piece 4. When the pillow packaging bag storing the article is manufactured at each definite length while a rolled film of the film A for packaging the article is delivered out, the knob piece 4 is made to be a structure formed at the upper end side at the central part of the surface, and unsealing is performed by being wound up from the cutting lines 2 and 2 by the knob piece 4. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a film for wrapping goods such as food, and in particular, to a film for wrapping a long strip for producing a packaging bag for wrapping an article at a certain length while being wound in a roll and fed out. is there.

  Conventionally, as a film for making a pillow packaging bag, for example, as described in Patent Document 1, a heat-sealable film that can be fused to each other by heat made of polyethylene, polypropylene, or the like is used as an inner layer. A long belt-like film having a certain width, which is formed by laminating and integrating a film or a polyvinyl chloride film and laminating and integrating these inner and outer layers via an appropriate intermediate film, is known. While winding and feeding out every certain length, the both side ends are overlapped in a palm shape so that the inner layers join each other and heat-sealed to form a back seal part, and orthogonal to this back seal part A pillow packaging bag that encloses an article by forming an upper seal portion and a bottom seal portion by heat-sealing the inner layers of the upper and lower ends that are joined together. It is manufactured.

  However, the pillow packaging bag manufactured in this way is difficult to open because all of the above-mentioned seal portions are firmly adhered, and therefore, in the portion corresponding to the position near the back seal portion, A cutting tape is provided along the back seal portion along the back seal portion at a position corresponding to the position near the back seal portion and a notch for opening as a starting point for opening when tearing along with a cut tape. It is the structure which provided the opening means which consists of a cut line. Further, in Patent Document 2, the outer end edge portion of the film bonded and fused in a palm shape forming the back seal portion is formed on the gripping portion which is released without being fused, and both the gripping portions are provided. A pillow packaging bag that can be opened by being picked and pulled in the tearing direction is disclosed.

Japanese Patent Laid-Open No. 10-250764 JP 11-11497 A

  However, as in the former case, according to the cut tape provided along the back seal portion at a position corresponding to the vicinity of the back seal portion, an elongated unsealed portion of the trace that has been peeled off using the cut tape as the opening start point Is formed by sealing the remaining contents by folding the back seal part on the opening part, so that the remaining part is sealed and the contents of the opening part are extremely narrow and small contents such as powder particles Although it is difficult to take out one large article such as a roll pan, and the front and back film portions are firmly fused at the top seal portion and the bottom seal portion, It is also difficult to widen the opening width, which is not suitable for packaging large items such as bread. Furthermore, since the opening start ends of the cut tape are present between the small V-shaped notches provided on both sides of the cut tape, it is difficult to check the opening start ends at a glance. Since the starting end is small, there is a problem in that the opening operation by gripping the opening starting end cannot be performed smoothly.

  On the other hand, according to the structure in which the opening means comprising the perforated cut line is provided on one side of the pillow packaging bag, one side of the pillow packaging bag can be opened largely from the center portion. Since it is performed by pulling in the widening direction while pressing both sides of the above-mentioned cutting line with a fingertip, there is a possibility that the contents may be crushed and deformed, and the cutting line has its longitudinal direction as its fulcrum and its length direction For example, when a roll bread is packaged, the center part in the length direction of the roll bread can be exposed to the outside greatly. The end is almost covered with the film and can be projected to the outside. Therefore, the roll bread is eaten from the end while holding the pillow packaging bag. Difficult.

  Similarly, the outer edge portion of the film bonded and fused in the form of a palm forming the back seal portion is formed on the gripping portion that is released without fusing, and the gripping portions of both the gripping portions are gripped and the tearing direction is formed. According to the pillow packaging bag that can be opened by pulling on the two sides, since both the gripping portions are joined to each other, not only is it impossible to determine from which portion the opening is to be opened, Since the width is extremely narrow, there is a possibility that the fingertip will slip from the gripping part when opening and may cause the pillow packaging bag to fall, and in the same way as the pillow packaging bag provided with the above-mentioned score line Even if the center part in the length direction of the back seal part can be largely peeled off and opened, it is difficult to open both ends, so it is suitable for packaging articles that you want to take out from one end part like a roll pan. There has been a Itoitta problems.

  The present invention has been made in view of such problems, and the object of the present invention is to confirm the opening start end portion at a glance on the surface opposite to the back seal portion, and between both ends in the length direction. Another object of the present invention is to provide an article packaging film capable of continuously making a large number of packaging bags having an opening means that can be opened easily and accurately with a relatively large constant opening width.

  In order to achieve the above object, as described in claim 1, the film for packaging an article of the present invention is a belt-like film having a constant interval at the center in the width direction of the long belt-like film having heat-fusibility. Two cut lines that reach a certain depth from the surface of the film are engraved over the entire length, cross between these cut lines, and both sides in one direction of the length of the strip film. A film in which convex cut lines are formed at regular intervals in the length direction of the belt-like film by crossing the both ends of the cut line in a state of being inclined toward each other, and surrounded by the convex cut lines. The part is formed into a knob piece that can be lifted with both side ends of the score line as a fulcrum, and further, the convex shape penetrating to the back surface of the strip-shaped film corresponding to each knob piece. It has a structure in which a protective sheet piece covering the score line is attached. There.

  In the article packaging film configured as described above, the invention according to claim 2 uses the convex cut line forming the knob as an upward convex cut line, from the upward convex cut line. A state in which the both side cut lines are crossed between the cut lines on the both sides with a small gap between them, and both sides are inclined in a direction away from the inclined side parts of the upward convex cut line. In the above-mentioned cut line, the both side ends thereof are respectively intersected to provide a downward convex cut line opposed to the upward convex cut line, and the film portion surrounded by the downward convex cut line It is characterized in that it is formed into a knob that can be lifted in the opposite direction to the knob piece with both side ends of the cut line as a fulcrum.

  Furthermore, in the invention according to claim 3, a portion of the cut line forming the knob piece that crosses between both side cut lines is formed into a straight cut line portion, and the straight cut line portion is formed. Inclined cut line portions that are inclined in a direction that is vertically separated from both side ends of the cut line portion as a common cut line portion, and that both side end portions are curved inward to intersect with both side cut lines. By forming the common cut line portion and the both sides inclined cut line portion inclined upward, a downward convex cut line is formed, while the common cut line portion and both sides inclined downward are formed. An upwardly convex cut line is formed on the picked piece, which forms an upward convex cut line with the inclined cut line part, and can lift up the film part surrounded by the downward convex cut line. The film part surrounded by is shaped into a pinch piece that can be lifted downward And characterized in that it.

  The invention according to claim 4 is the invention according to any one of claims 1 to 3, wherein a reinforcing film having a constant width is stuck to the center of the back surface of the belt-like film over the entire length, and the score line is formed. The cut film is engraved from the surface of the belt-like film to a predetermined depth in the reinforcing film, and the convex cut line forming the knob is penetrated to the back surface of the reinforcing film. The line of sight is covered with a protective sheet piece attached to the back surface of the reinforcing film.

  In the article packaging film according to claim 1 or 4, the invention according to claim 5 is directed to directly attaching the surface of the protective sheet piece superposed on the back surface of the knob piece to the back surface of the knob piece. The outer peripheral edge portion of the protective sheet piece surrounding the knob piece is attached to the back surface of the belt-like film or the back surface of the reinforcing film without wearing, and the invention according to claim 6 is characterized by the above-mentioned belt-like shape. A thin strip film having a constant thickness is layered on both sides of the film over the entire length, and the strip film is rolled.

  According to the invention which concerns on Claim 1, in the center part of the width direction of the elongate strip | belt-shaped film which has heat-fusion property, it leaves a fixed space | interval and engraves the two cut lines over the full length. Therefore, this long strip-shaped film is rolled out from the rolled state, and while curving into a cylindrical shape, both side ends are overlapped and fused together to form a back seal portion, and a fixed length. When a pillow packaging bag is formed in which a bottom seal portion and an upper seal portion are formed in the width direction every time, and an article is enclosed by these seal portions, the above two cuts are formed on the surface opposite to the back seal portion. A pillow packaging bag having a score line can be obtained, and since there is no back seal portion on this surface, the distance between the two score lines can be easily taken out in advance. It can be formed at a width interval.

  Further, the long strip-shaped film has the above-mentioned cut in a state where the two cut lines arranged side by side are crossed and both side portions are inclined toward one direction of the length of the strip-shaped film. Convex score lines are formed at regular intervals in the length direction of the belt-like film, and the film portions between the score lines surrounded by the score lines are located at both edges of the score lines. Is used as a fulcrum, and when the packaging bag made of the belt-shaped film is opened, the gripping piece is placed on the one side of the packaging bag and the center of the packaging bag. Since it has a structure that is provided so as to cross the above two cut lines that are arranged in parallel, the position of the knob can be confirmed at a glance, From the convex cut line where both ends intersect the cut lines on both sides Since the shape of the picked piece surrounded by this convex cut line is large, it can be opened smoothly along the two cut lines while securely picking with a fingertip. .

  Also, depending on the length of the articles stored in the packaging bag, by providing the knob pieces provided between the two cut lines at regular intervals in the length direction of the strip film. , When manufacturing a packaging bag containing the article while cutting the fed strip-shaped film every fixed length, it is possible to accurately provide a knob piece at a position along the lower edge central portion of the upper seal portion, By pulling this knob piece downward as an opening start end, the film part between the cut lines on both sides integral with the knob piece is easily opened along the cut line from the upper end to the lower end of the packaging bag. be able to.

  In this way, when opening the packaging bag, the film part between the cut lines on both sides with a predetermined interval is peeled across the upper and lower ends with a relatively large opening width corresponding to the distance between the cut lines. Since it can, it can be easily taken out from the bag without crushing the article. For example, when packaging a roll bread, the packaging bag is such that one end of the roll bread is exposed from the open end. It is possible to eat hygienically while gripping.

  In addition, when a packaging bag, for example, a pillow packaging bag, is produced from a belt-like film as described above, the back surface of the film portion corresponding to the knob piece covers the cut line forming the knob piece. Since the sheet piece is attached, the protective sheet piece reliably shuts off the outside air and completely seals the article even though the cut line penetrates from the surface of the packaging bag to the inside. be able to.

  Furthermore, according to the invention which concerns on Claim 2, let the convex cutting line which forms the knob piece of the said Claim 1 be an upward convex cutting line, and this upward convex cut line By providing a downward convex cut line between both side cut lines with a small gap upward from the above, the film part surrounded by this downward convex cut line is turned upward with both side edges of the cut line as fulcrums. Since it is formed into a knob that can be lifted in the opposite direction to the knob formed by the piercing line, the film is overlapped between the upper and lower knobs together with the formation of the back seal part while feeding out the belt-like film. When the upper seal part and the bottom seal part are formed by sequentially fusing the parts and dividing the fused part into two parts, the grip pieces are placed on the upper and lower ends on the surface opposite to the back seal part. You can get the packaging bag By pulling the upper knob piece downward, the film part between the two side cut lines can be opened downward from the upper end, while the lower knob piece is pulled upward to pull both sides. An intermediate film portion can be opened upward from the lower end, and a packaging bag that can be easily opened from any direction can be provided.

  Moreover, according to the invention which concerns on Claim 3, the part which has crossed between the both-side incision lines in the cut line which forms the knob | pick piece is formed in a linear cut line part, This linear cut line Inclined in a direction that is vertically separated from both side ends of the cut line portion as a common cut line portion, and curved in such a manner that both side end portions are bent inward and intersected with both side cut lines. By providing the inclined cut line portion, the common cut line portion and the both side inclined cut line portions inclined upward form a downward convex cut line, while the common cut line portion and the lower side An upwardly convex cut line is formed with both sides of the inclined cut line part inclined in the upward direction, and a film piece surrounded by the downwardly convex cut line is formed into a knob piece that can be lifted upward, The film part surrounded by the cut line can be rolled up downward Since it is formed on the momi piece, when the packaging bag is produced as described above, these upper and lower kneading pieces can be provided at the center in the length direction of the packaging bag. By picking up the pinch piece and rolling it up, the film part between the cut lines on the upper half of the packaging bag can be easily opened, while the pinch piece on the lower side is picked downward By rolling up, it is possible to easily open the film portion between the cut lines on both sides of the lower half of the packaging bag.

  Accordingly, only one half of the upper and lower portions of the packaging bag can be accurately opened, and the article as the contents can be taken out easily and reliably without accidentally dropping off, and the article can be removed from the roll pan. Can be eaten hygienically from the exposed end with one half exposed and the other half fully packaged in a packaging bag. . In addition, since the cut lines forming these upper and lower knob pieces are formed in a common straight cut line portion, the part that crosses between the cut lines on both sides provided in parallel to each other, The film portion between the cut lines on both sides can be removed cleanly over the entire length, and a packaging bag can be obtained that can be opened largely to smoothly take out articles and the like.

  In addition to providing the cut line and the cut line on one strip-shaped film, as described in claim 4, a reinforcing film having a certain width is stuck to the center of the back surface of the strip-shaped film. A structure in which a score line is engraved from the surface of the belt-like film to a predetermined depth in the reinforcing film, and a convex score line forming a knob is penetrated to the back surface of the reinforcing film. You may leave as.

  According to the invention which concerns on Claim 5, the protective sheet piece which has surrounded the knob piece, without sticking the surface of the said protective sheet piece superimposed on the back surface of the knob piece on the back surface of this knob piece Since the outer peripheral edge of the tape is attached to the back of the belt-like film or the back of the reinforcing film, the back of the knob is not attached to the protective sheet. Even if the packaging bag is completely sealed by the protective seal piece, it can be easily opened.

  Moreover, according to the invention which concerns on Claim 6, since the strip | belt-shaped film of fixed thickness was layered over the full length on both sides of the strip | belt-shaped film, and this strip | belt-shaped film is rolled, the fixed width | variety In the case where the narrow strip film is not layered on both sides of the long strip-shaped packaging film, the strip film is attached to the back of the central portion in the width direction of the strip film when wound in a roll. When the reinforcing film is attached to the thickness of the protective sheet or the back surface of the central portion in the width direction of the belt-like film as described in claim 2, the center of the roll is rolled depending on the thickness of the reinforcing film. However, there is a problem that a large diameter roll cannot be wound due to the winding form in which the portion swells like a drum drum, but a thin strip film with a constant thickness is layered on both sides of the strip film. I'm wearing When the belt-like film is wound into a roll shape, the roll film can be wound so as to have substantially the same diameter across both ends. A packaging bag can be manufactured while paying out.

  A specific embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a simplified perspective view of a roll-like long strip-shaped packaging film A that is partially fed, and FIG. 2 is a cross-sectional view. This film A for packaging is formed in a central portion in the width direction of a long strip film 1 having a width substantially equal to the circumferential length of the pillow packaging bag B to be produced, with a certain interval left and right. The two cut lines 2, 2 reaching a certain depth from the surface are engraved over the entire length, and the above-mentioned cut lines are provided for each length interval substantially equal to the length of the pillow packaging bag B to be produced. 2 and 2, and both side portions thereof are inclined toward either the front or back in the length direction of the belt-like film 1, and both side ends are intersected with the cut lines 2 and 2, respectively. A cut line 3 is provided, and the film portion surrounded by the convex cut line 3 is cut. The cut line 4 is formed on the gripping piece 4 that can be lifted up with the both side ends thereof as a fulcrum, and further formed on the back surface of the film portion of the belt-like film 1 corresponding to all the picking pieces 4 The protective sheet piece 5 covering 3 is adhered.

  The two cut lines 2, 2 provided parallel to each other in the center in the width direction of the strip film 1 were engraved with a certain depth from the surface without penetrating the back surface of the strip film 1. The cut lines 2 and 2 are engraved by a cutting means using a horn that is vibrated by an ultrasonic oscillator, a cutting means by laser irradiation such as a carbon dioxide laser, or the like.

  On the other hand, the score line 3 provided so as to cross between the score lines 2 and 2 is provided so as to penetrate between the front and back surfaces of the belt-like film 1 by ultrasonic cutting means or the like. The cut line 3 is formed in a central cut line portion 3a that is curved in a convex arc shape in the length direction of the belt-like film 1 from a portion intersecting the cut lines 2 and 2 between the cut lines 2 and 2. The both-side cut line portions provided in the strip-shaped film part on the outer side from the cut lines 2 and 2 on both sides are projected from the central cut line part 3a curved in the convex arc shape from the part intersecting the cut lines 2 and 2 The both ends of the central cut line portion 3a toward the length direction of the strip-shaped film opposite to the direction (hereinafter, this direction is set as the downward direction and the direction protruding in the convex shape of the central cut line portion 3a is set as the upward direction) It is formed on both side inclined cut lines 3b, 3b inclined so as to extend, and these Both side end portions that are extended portions of the both-side inclined cut line portions 3b, 3b are formed into curved line portions 3c, 3c that are curved in an arc downward and obliquely inward, and both sides of the curved line portions 3c, 3c are formed. It has a shape in which the end intersects the cut lines 2 and 2 with a small space below from the intersection of the central cut line portion 3a and the cut lines 2 and 2.

  Then, the film portion surrounded by the cut line 3 formed in this way is lifted up or raised by using the intersection of the cut line 3 with the cut lines 2 and 2 at the both side curved line portions 3c and 3c. However, it is formed in the above-mentioned knob piece 4 that can be used. In addition, as the shape of the central score line portion 3a existing between the score lines 2 and 2 in the score line 3 forming the knob piece 4, the shape is curved in a convex arc shape upward as described above. It may be a cut line of trapezoidal shape, triangular shape, etc., or may be a straight cut line portion orthogonal to the cut lines 2 and 2, and further, the both side inclined cut lines The portions 3b and 3b are not provided outside the cut lines 2 and 2, but are provided on the inner side, and the curved line portions 3c and 3c as described above are not provided on the inclined cut line portion. The shape may be such that the lower end of the slope intersects the cut lines 2, 2. In short, it should be formed in a convex shape upward from both side ends that intersect the cut lines 2, 2. That's fine.

  Moreover, the said protection sheet piece 5 stuck on the part which has provided each knob | pick piece 4 in the back surface of the strip | belt-shaped film 1 is a landscape long which has a magnitude | size which can coat | cover the knob | pick piece 4 entirely. It consists of a rectangular thin synthetic resin sheet or film, and this protective sheet piece 5 is overlapped on the back surface of the knob piece 4 and stuck to the back surface of the knob piece 4 (cut line). 3) The outer peripheral edge of the protective sheet piece 5 surrounding the periphery of the protective sheet piece 5 is pinched to the strip-shaped film portion on the outer side. Therefore, the knob piece 4 can be easily caused through the cut line 3, and the cut line 3 is blocked by the protective sheet piece 5 from communicating with the back surface of the protective sheet piece 5.

  Furthermore, when the said strip | belt-shaped film 1 is wound in roll shape, it becomes the winding form by which the center part swelled like the drum body with the thickness of the said protective sheet 5 provided in the center part of the width direction in a back surface. Since it becomes impossible to roll a large-diameter roll, in order to enable roll winding so that the diameter is substantially the same between both ends, the protective film piece 5 is protected at both ends on the back side of the belt-like film 1 in the vicinity of the outer side. Narrow strip films 6, 6 having substantially the same thickness as the sheet piece 5 are heat-sealed over the entire length.

  As shown in FIG. 2, the belt-like film 1 has a heat-sealable synthetic resin film as a back layer 1a, a base film having a melting point higher than that of the back layer 1a as a surface layer 1b, and these front and back layers 1a and 1b are A laminated film that is integrally laminated, and as a heat-sealable synthetic resin film that forms the back layer 1a, an easy-heat-sealable film made of polyethylene, polypropylene, or the like is used, and a base material that forms the surface layer 1b As the film, a polyamide film or a polyvinyl chloride film having a higher melting point than the film forming the back layer 1a is used. The belt-like film 1 is not limited to the laminated film composed of the front and back layers 1a and 1b, but has a three-layer structure in which an adhesive layer made of polyethylene or the like is interposed as an intermediate layer between the front and back layers 1a and 1b. It may be a laminated film.

  The long strip-shaped article packaging film A configured as described above is wound into a roll having a constant diameter as shown in FIG. 1, and the roll-wrapped film A is conventionally used as a pillow packaging machine (not shown). ), A pillow packaging bag B filled with and housed with an article for every predetermined length is produced while the belt-like film 1 is fed out. That is, the back-seal portion 7 is formed by unwinding the belt-like film 1 and fusing the backside layers of opposite side ends facing each other in a palm-like manner so that both sides thereof are folded over the center portion. At the same time, a portion having a small gap upward from the upper end of the knob 4 at the overlapping portion of the central portion of the belt-like film 1 and both side portions folded on the central portion is fused across the entire width. A seal portion is formed.

  Furthermore, after the article is filled in the cylindrical body formed upward from the horizontal seal portion by providing the horizontal seal portion, the belt-like film portion on the upper end side of the article is placed in the center in the width direction in the same manner as described above. A lateral seal portion is formed by folding the both side portions upward and fusing a portion having a small gap upward from the upper end of the knob 4 in the overlapped portion over the entire width. The next article is filled in the cylindrical body formed in (1). Then, while the belt-like film 1 is bent into a cylindrical shape as described above to form the back seal portion 7, the filling of the article and the horizontal seal portion are sequentially formed, and the vertical width direction of the horizontal seal portion By sequentially cutting the central part in the horizontal direction, as shown in FIG. 3, the upper seal part 8, the bottom seal part 9 and the central part on the back side are between these seal parts 8 and 9. A pillow packaging bag B, which includes the back seal portion 7 provided and wraps the article C, is sequentially produced.

  The pillow packaging bag B thus obtained has, on its surface, a cut line 2 that is arranged at a constant interval on the left and right across the central portion in the width direction of the upper seal portion 8 and the bottom seal portion 9. 2 and a central score line portion curved in a convex arc shape upward in the convex score line 3 in which the knob 4 is formed on the upper end side of the score lines 2 and 2. 3a is provided along the lower edge of the upper seal portion 8 with a small gap from the lower edge, and the back seal portion 7 is provided on the back surface at the center in the width direction across the upper and lower ends. It has a structure.

  In order to open the pillow packaging bag B configured as described above, when the knob 4 is lifted from the central cut line portion 3a, the both side inclined cut line portions 3b and 3b connected to the central cut line portion 3a are removed. The curved line portions 3c, 3c rise from the end portions of the curved line portions 3c, 3c intersecting with the cut lines 2, 2 so as to peel from the protective sheet piece 5 over the curved line portions 3c, 3c. At this time, the connecting portion between the central cut line portion 3a and the both side inclined cut line portions 3b and 3b intersects the cut lines 2 and 2 before reaching the curved line portions 3c and 3c. 2 and 2 are not penetrating to the inner surface of the pillow packaging bag B, and the cut line portions 3a and 3b are penetrated. Therefore, the cut lines 2 and 2 are connected to the cut line portions 3a and 3b at the intersection. The cut line portion between the intersecting portion and the intersecting portion on the fulcrum side is lifted up integrally with the knob 4 with the ends of the curved line portions 3c and 3c as fulcrums.

  When the knob 4 is picked with a fingertip and pulled downward, as shown in FIG. 4, both side ends of the knob 4, that is, cuts on both sides connected to the ends of the curved line portions 3 c and 3 c are provided. The film portion 1 ′ between the cut lines 2 and 2 is peeled off from the upper ends of the lines 2 and 2 and opened, and the center portion of the surface of the pillow packaging bag B is opened. At this time, for example, if the contents are food such as a roll, the upper end of the roll is exposed to the outside through the opening 10 from the upper end to a predetermined length portion, and is not opened. It can be eaten from the upper end while the lower part of the pillow packaging bag B is gripped, and even if it is another article, the film portion 1 between the score lines 2 and 2 by the knob 4 above. It can be easily taken out through the opening 10 by peeling '.

  At this time, in the case of packaging one (or two) relatively large articles in the pillow packaging bag B, the opening width of the opening 10, that is, between the cut lines 2 and 2. If the width is small, the article cannot be easily taken out from the pillow packaging bag B, and if the width between the score lines 2 and 2 is too large, the article may be unexpectedly packaged when opened. Since there is a possibility of falling from the bag B, the width of the cut lines 2 and 2 is set to 1/4 to 3/4, preferably 1/3 to 1/2 of the lateral width of the pillow packaging bag B. Forming. Thus, since the widths of the cut lines 2 and 2 are relatively wide, the horizontal width of the knob 4 is increased, and the vertical width is formed to a desired width, so that the knob 4 can be formed larger. Thus, the position can be confirmed at a glance and the operation of picking and picking up can be easily performed, and the opening can be performed reliably and smoothly.

  In addition, as shown in FIG. 5, you may provide the reinforcement seal part 8 'along the lower part of this knob piece 4 so that the said knob piece 4 may be pinched | interposed with the upper seal part 8, and it picks up at the time of opening. After causing the piece 4 to cross the reinforcing seal portion 8 ', the film portion between the cut lines 2 and 2 may be peeled off. Other configurations are the same as those in the above embodiment.

  FIG. 6 is a simplified perspective view showing another embodiment of the present invention. This packaging film A1 is the same as the packaging film A of the embodiment shown in FIGS. When the pillow packaging bag B1 is produced from the packaging film A1, the pillow packaging bag B1 is also provided on the lower end side of the pillow packaging bag B1.

  Specifically, a certain distance is left and right at the center in the width direction of the long heat-fusible band-like film 1 having a width substantially equal to the circumference of the pillow packaging bag B1 to be produced. Two cut lines 2, 2 reaching a certain depth from the surface of the belt-like film 1 are engraved over the entire length, and each length interval substantially equal to the length of the pillow packaging bag B1 to be produced. And a pair of upward convex cut lines 3 crossing between the cut lines 2 and 2 and a downward convex cut line 3 'opposed to the cut lines 3 with a small gap therebetween. The cut lines 3 and 3 'are formed, and the film portion surrounded by the cut lines 3 and 3' can be rolled up in directions opposite to each other with both ends of the cut lines 3 and 3 'as fulcrums. Formed on the tabs 4 and 4 ', and the back surfaces of the tabs 4 and 4' are covered with the protective sheet strips 5 and 5 ', respectively. It is made of 'the outer peripheral portion of the score line 3, 3' of the protective sheet pieces 5,5 from stuck to the outside of the film portion.

  The downward convex cut line 3 ′ is formed in the same shape except that it is formed in a symmetrical shape with the upward convex cut line 3 described in detail in the above embodiment. That is, this cut line 3 'is formed in a central cut line portion 3a' that is curved in a convex arc shape downward from a portion intersecting with the cut lines 2 and 2 between the cut lines 2 and 2. Both side cut lines provided in the strip-shaped film part on the outer side from the cut lines 2 and 2 on both sides are the central cut line parts 3a ′ curved in the convex arc shape from the part intersecting the cut lines 2 and 2 Are formed on both side inclined cut line portions 3b 'and 3b' which are inclined so as to extend both ends of the central cut line portion 3a 'toward the upward direction which is the projecting direction of the both sides, and these both side inclined cut line portions 3b 'And 3b' are formed as curved line portions 3c 'and 3c' that are curved in an arc shape obliquely upward toward the inside, and are formed on both sides of the curved line portions 3c 'and 3c'. It has a shape in which the end intersects the cut lines 2 and 2 with a small gap above the intersection between the central cut line 3a 'and the cut lines 2 and 2 That. Since other structures are the same as those in the above embodiment, the same parts are denoted by the same reference numerals and detailed description thereof is omitted.

  The long strip-shaped article packaging film A1 configured as described above is in the same manner as in the above-described embodiment, in a state where the strip-shaped film 1 is wound in a roll shape and fed out by a pillow packaging machine (not shown). A pillow packaging bag B1 filled and accommodated with articles for each length is produced. That is, the back-seal portion 7 is formed by unwinding the belt-like film 1 and fusing the backside layers of opposite side ends facing each other in a palm-like manner so that both sides thereof are folded over the center portion. And a step of sequentially forming transverse seal portions by fusing over the entire width of the overlapped film portion between the downward convex cut line 3 ′ and the upward convex cut line 3. And, before forming the next horizontal seal portion subsequent to the previously formed horizontal seal portion, the step of sequentially filling the articles into the upper curved cylindrical film portion from the previously formed horizontal seal portion By repeatedly cutting the central portion in the vertical width direction of the horizontal seal portion in the horizontal direction while repeating, the upper seal portion 8, the bottom seal portion 9, and the central portion on the back surface side are cut as shown in FIG. Across these seals 8 and 9 It consists vignetting spine seal portion 7 for successively pillow packaging bag B1 which packaged articles C, is intended to produce.

  The pillow packaging bag B1 obtained in this way has cut lines 2 arranged on the surface thereof at regular intervals on the left and right across the central portion in the width direction of the upper seal portion 8 and the bottom seal portion 9. 2 and a central score line portion curved in a convex arc shape upward in the convex score line 3 in which the knob 4 is formed on the upper end side of the score lines 2 and 2. 3a is provided along the lower edge of the upper seal portion 8 with a small gap from the lower edge, and below the convex cut line 3 'in which the knob 4' is formed on the lower edge side. A central cut line portion 3a ′ curved in a convex arc shape toward the bottom is provided along the bottom seal portion 9 with a small gap above the bottom seal portion 9.

  Therefore, according to this pillow packaging bag B1, as shown in FIG. 8, if the knob 4 provided on the upper end of the surface is lifted up, the knob 4 is picked and pulled downward, the above-mentioned implementation Similarly to the example, the film between the cut lines 2 and 2 from both ends of the knob 4, that is, the upper ends of the cut lines 2 and 2 connected to the ends of the curved line portions 3 c and 3 c. The portion 1 ′ is peeled off, and can be opened with the opening 10 having the same opening width as that of the above-mentioned embodiment toward the lower side at the center of the surface of the pillow packaging bag B. Similarly, if the knob piece 4 'provided at the lower end is lifted up, and the knob piece 4 is picked up and pulled upward, both ends of the knob piece 4', that is, the curved line portions 3c, 3c The film portion 1 ′ between the cut lines 2, 2 is peeled off from the lower ends of the cut lines 2, 2 on both sides that are connected to the end, and the above is directed upward to the center of the surface of the pillow packaging bag B. Can be opened with the opening 10 having the same opening width.

  FIG. 9 shows still another embodiment of the present invention. In the above embodiment, a knob 4 (4 ′) is provided at the end in the length direction and can be opened in the length direction from the end side. An article packaging film A (A1) for making a pillow packaging bag B (B1) is disclosed, but in this embodiment, it can be opened from the center in the length direction toward the upper and lower ends. An article wrapping film A2 that can produce a pillow packaging bag B2 is provided.

  That is, this product packaging film A2 is fixed to the left and right at the center in the width direction of the long heat-sealable film 1 having a width substantially equal to the circumference of the pillow packaging bag B2 to be produced. Two cut lines 2 and 2 that reach a certain depth from the surface of the belt-like film 1 with an interval are engraved over the entire length, and are approximately the length of the pillow packaging bag B2 to be produced. For each equal length interval, a straight central cut line portion 3a '' is provided across the cut lines 2 and 2, and the central cut line portion is used as a common cut line portion. Forming both side inclined cut line portions 3b and 3b inclined downward from both side ends of the portion 3a '' and both side inclined cut line portions 3b 'and 3b' inclined upward. A bay where both side ends, which are the extended parts of both side inclined cut line portions 3b, 3b, which are inclined toward the side, are curved in an arc downward and obliquely inward. A bay that is formed in curved portions 3c and 3c, while both side end portions, which are extended portions of both side inclined cut line portions 3b 'and 3b' inclined upward, are curved in an arc upward and obliquely upward inward. The curved line portions 3c ′ and 3c ′ are formed, and the curved line portions 3c, 3c, and 3c ′ and 3c ′ are formed by cutting lines 2 that are spaced apart from the central cut line portion 3a ″ in the vertical direction. Crosses 2

  Therefore, an upward convex cut formed by the common central cut line portion 3a '' and both side inclined cut line portions 3b and 3b having curved line portions 3c and 3c formed downward from both ends. On the knob 4A that can lift the film portion surrounded by the line of sight 31 downward, the above-mentioned common central cut line part 3a '' and the curved line part 3c 'formed upward from both ends thereof The film portion surrounded by the downwardly convex cut line 32 formed by the both side inclined cut line portions 3b 'and 3b' having 3c 'is formed into a knob piece 4B that can be lifted upward. Yes. Further, the back surfaces of these tabs 4A and 4B are respectively covered with a common protective sheet piece 5 '', and the outer peripheral edge of the protective sheet piece 5 '' is pasted to the outer film portion from the cut lines 31 and 32. It is something that you wear. Since other structures are the same as those in the above embodiment, the same parts are denoted by the same reference numerals and detailed description thereof is omitted.

  The long strip-shaped article packaging film A2 configured as described above is in the same manner as in the above-described embodiment, in a state where the strip-shaped film 1 is wound in a roll shape and fed out by a pillow packaging machine (not shown). A pillow packaging bag B2 filled and accommodated with articles for each length is produced. At this time, the back-seal part 7 is formed by laminating and fusing the back surface layers of the opposite side end parts in a palm-like manner so that the both side parts are folded over the center part while feeding the belt-like film 1. In addition, the pair of upper and lower cut lines 31, 32 provided via the common central cut line part 3a '' is disposed at the center part in the length direction on the surface of the pillow packaging bag B2. The horizontal seal portions are sequentially formed by thermally fusing film portions having a predetermined interval in the vertical direction from the cut lines 31 and 32, and the central portions in the vertical width direction of these horizontal seal portions are cut in the horizontal direction. Accordingly, as shown in FIG. 10, the upper seal portion 8, the bottom seal portion 9, and the back seal portion 7 provided between the seal portions 8 and 9 in the central portion on the back surface side, Consists of a pair of upper and lower cut lines 31, 32 at the center of the surface side Under picked try pieces 4A, and 4B is provided, and, the pillow packaging bag B1 which packaged articles C inside successively, is intended to produce.

  According to the pillow packaging bag B2 thus obtained, the film between the score lines 2 and 2 from the central portion to the upper end can be obtained by picking up the upper tab 4B provided at the center of the surface and raising it upward. The portion 1B is peeled off along the cut lines 2 and 2 so that the upper half can be opened with the opening 10 having the same opening width as the above embodiment. If the knob 4A is picked up and rolled up, the film part 1A between the cut line 2 and 2 from the center to the lower end is peeled along the cut lines 2 and 2 and the lower half is opened in the same way It can be opened with an opening 10 having a width. Therefore, the article packaged by the pillow packaging bag B2 can be smoothly opened without touching the article with a fingertip or the like, and without fear of crushing the article.

  Moreover, in any of the above-described embodiments, the cutting lines 2 and 2 made of half-cut lines are provided in the center of the surface of the pillow packaging bags B, B1 and B2 with a certain interval in the width direction. Since it can open correctly from these score lines 2 and 2, an unstretched film can be used conveniently as a packaging film, without employ | adopting a stretched film.

  When manufacturing packaging bags B, B1, and B2 containing articles from the long belt-like film 1, both side portions of the belt-like film 1 are folded inward and the side edges facing each other are in the shape of a palm. The back seal portion 7 is formed by being overlapped and fused to each other, but the other side end portion is overlapped on one side end portion and fused together without overlapping in the form of a palm. You may form a back seal part by.

  Furthermore, the packaging bag B (B1) (B2) constitutes a pillow packaging bag having the upper and lower ends fused 8 and 9, but without being fused, as shown in FIG. At the upper and lower ends, upper and lower folded portions 11 and 12 that are 1/2 or more of the length of the packaging bag B and shorter than the entire length of the packaging bag B are connected in series, and these upper and lower folded portions 11 and 12 are connected to the packaging bag B. Fold back to the back surface of the packaging bag B, and the opposite tip portions are overlapped, and the overlapped portions are sealed with separable seal paper (not shown), or a rubber band (not shown) is attached to the length of the packaging bag B. It may be formed so as to be hung at the front end portion where the folded-back portions 11 and 12 are overlapped by the rubber band over the central portion in the vertical direction.

  As a belt-like film for producing such a packaging bag B, in the belt-like film 1 in the above embodiment, two strip lines 2 are provided in parallel to each other at a constant interval in the center portion in the width direction. What is necessary is just to enlarge the space | interval of the knob | pick piece 4 provided so that it may construct between 2 and it is the same about other structures. And while feeding this strip | belt-shaped film in a horizontal direction and supplying articles | goods on the center part of the width direction for every fixed length, the both sides of the width direction are turned inward and the side which covers and opposes an article | item After overlapping the end portions and fusing them, cutting the portions equal to the length of the folded portions 11 and 12 from both ends in the length direction of the article, and then packaging the folded portions 11 and 12 as described above It suffices to fold back to the back of the bag. When the packaging bag is formed, the article is supplied to the band-like film at regular intervals so that the knob 4 provided on the band-like film is located at the end of the surface of the packaging bag. . Further, the cut shape of the pillow packaging film is not particularly limited.

FIG. 3 is a partially cutaway perspective view of a rolled product packaging film. The cross-sectional view of this article packaging film. The perspective view of a pillow packaging bag. The perspective view of the state which has opened a part. The perspective view which shows a modification. The simplified perspective view which shows another Example of this invention. The perspective view of the pillow packaging bag. The perspective view of the state which has opened a part. The simplified perspective view which shows another Example of this invention. The perspective view of the pillow packaging bag. The perspective view of the state which has opened a part. The perspective view of the packaging bag which has another structure produced from the film for packaging.

Explanation of symbols

A Goods packaging film B Pillow packaging bag 1 Long strip film 2 Cut line 3 Cut line
3a Center cut line
3b Inclined cut line on both sides
3c Curved line part 4 Picking piece 5 Protective sheet piece 6 Narrow strip film 7 Back seal part 8 Top seal part 9 Bottom seal part

Claims (6)

  A packaging film for producing a packaging bag, which reaches a certain depth from the surface of the belt-like film at a certain interval in the center in the width direction of the long belt-like film having heat-fusibility. The cut line of the strip is engraved over the entire length, and the cut line is crossed between the cut lines and the both sides are inclined toward one direction of the length of the strip film. Convex cut lines that intersect each side edge are provided at regular intervals in the length direction of the belt-like film, and the film portions surrounded by the convex cut lines are used as fulcrums at both side edges of the cut line. A protective sheet piece covering the convex cut line penetrating to the back surface is attached to the back surface of the strip-shaped film corresponding to each pick piece. A film for packaging an article characterized by being worn.   The convex cut line forming the knob is defined as an upward convex cut line, and between the cut lines on both sides of the upward convex cut line, with a small gap therebetween. And the both side ends of the both sides are intersected with the score line in a state where the both sides are inclined in a direction away from the inclined sides of the upward convex cut line. A downward convex cut line is provided opposite to the cut line, and the film portion surrounded by the downward convex cut line can be lifted in the opposite direction to the above-mentioned knob piece with both side ends of the cut line as fulcrums. 2. The article packaging film according to claim 1, wherein the article packaging film is formed by pinching.   A part of the cut line forming the knob piece that crosses between both side cut lines is formed into a straight cut line part, and the straight cut line part is used as a common cut line part. The above-mentioned common cut is provided by inclining in a direction that is vertically separated from both side ends of each side, and by inclining the both side end portions inward and intersecting the both side cut lines. The line part and the both side inclined cut line part inclined upward form a downward convex cut line, while the common cut line part and the both side inclined cut line part inclined upward are convex upward. A cut line is formed, and the film part surrounded by the downward convex cut line is turned upward, and the film part surrounded by the upward convex cut line is directed downward. It is formed into a picking piece that can be lifted up. The article packaging film according to 1.   A reinforcing film of a certain width is attached to the center of the back surface of the belt-like film, and a cutting line is engraved from the surface of the belt-like film to a predetermined depth in the reinforcing film, and is picked. A convex cut line forming a piece is penetrated to the back surface of the reinforcing film, and the cut line is covered with a protective sheet piece attached to the back surface of the reinforcing film. The film for packaging an article according to claim 1, claim 2 or claim 3.   Without directly sticking the surface of the protective sheet piece superimposed on the back surface of the knob piece to the back surface of the knob piece, the outer peripheral edge of the protective sheet piece surrounding the knob piece is The film for packaging an article according to claim 1 or 4, wherein the film is attached to the back surface of the reinforcing film.   5. The article packaging according to claim 1 or 4, wherein a thin strip film having a constant thickness is layered on both sides of the strip film over the entire length, and the strip film is rolled. Film.

Images