JP6204766B2 - Wrap film storage box - Google Patents

Description

  The present invention relates to a wrap film storage box that is generally used for direct packaging of food in general households, food sales businesses, and the like, and more particularly to a cutting blade used for a wrap film storage box.

  Conventionally, a wrap film storage box in which a cylindrical wound wrap film is stored in a columnar box body is known. As this columnar box body, various types such as a columnar shape and a polygonal columnar shape with triangles to octagons are known. At the time of use, the wrap film is drawn out from the wound wrap film in the box body, and is cut by, for example, a saw blade attached to the tip of the front wall (the lid piece) of the lid portion of the box body.

  Generally, a metal blade is used for the saw blade attached to the current commercially available wrap film storage box. The shape design of conventional metal saw blades has been carefully selected from the three viewpoints of safety that does not damage fingers etc., advanced cutting performance, and sustainability of the cutting performance. Careful process management is carried out, so in these respects, consumers are highly acclaimed as highly rated as “excellent”.

  As the overall shape of the saw blade, a linear shape along the longitudinal direction of the wrap film storage box, a curved shape convex upward or convex downward, a V-shaped shape, a trapezoidal shape, etc. are known. ing.

  By the way, recently, this type of storage box is required to be able to remove a metal saw blade safely and easily when discarded as an empty box. For example, in Patent Document 1, a perforation surrounding the cutting blade is provided along the shape of the cutting blade on the paperboard of the front plate portion of the box to which the cutting blade is attached, and the cutting blade is cut from the perforation to the paperboard when discarded. A method of excision together with is proposed. In Patent Document 2, in addition to the above-described excision part surrounded by the perforation, a pressing piece that can be folded back is provided on the upper edge of the excision part, and the cutting edge of the cutting blade is covered by folding the pressing piece. It is described that the cutting blade can be removed safely and easily by putting the cutting blade in between and cutting the cutting blade together with the pressing piece and the paperboard of the cutting portion.

Japanese Utility Model Publication No. 4-62619 Japanese Utility Model Publication No. 4-48120

  However, what was proposed in Patent Document 1 and Patent Document 2 was the one in which the cutting blade was attached to the front plate of the box. However, when the cutting blade is attached to the lid piece, the cutting performance deteriorates, so that it is practical. Cannot be used. The cause of this is that when the perforation surrounding the cutting blade is installed in the lid piece, the rigidity and strength of the paperboard at the installation site of the cutting blade is reduced.

  That is, when the cutting blade is attached to the lid piece, when the wrap film is cut, the drawn wrap film is held between the front plate and the lid piece, and the drawn wrap film is held at the tip of the lid piece. The wrap film abutting on the saw blade is turned from one end to the other end by rotating the wrap film and the storage box in opposite directions in a state where they are brought into contact with each other and bent at an acute angle and tension is applied. Are cut into the sharp cutting edge of the saw blade in order. At this time, the lid piece is subjected to stress in a direction in which the wrap film pulls the blade edge and pulls the lid piece outward, but the normal lid piece without a perforation has a lower rigidity than the front plate, but protrudes forward. The degree of curvature deformation remains. However, when a perforation, especially a long perforation along the cutting blade, is installed in the lid piece, the paperboard strength of the lid piece is weakened and the lid piece is bent forward from the perforation. . This bending deformation deteriorates the angle at which the blade edge comes into contact with the film surface, resulting in a decrease in the cutting performance of the cutting blade (metal saw blade). In addition, the bending deformation becomes so large that the wrap film cutting operation is repeated, and the wrap film cannot be cut along with the bending size. On the other hand, even if the perforation is set so as not to cause the above bending deformation, the cutting blade cannot be easily removed by cutting the paperboard.

  The present invention has been made in view of such points, and an object thereof is to provide a wrapping film storage box in which the cutting blade can be safely and easily removed at the time of disposal without deteriorating the cutting performance of the cutting blade. And

That is, the present invention is as follows.
(1) A box body that has a lid portion and accommodates a cylindrical wound wrap film, and is provided along the longitudinal direction of the lid portion of the box body, and is drawn from the wound wrap film of the box body. A wrap film storage box having a cutting blade for cutting a wrap film, wherein the cutting blade is crimped and fixed at least at two positions in the longitudinal direction with respect to the lid portion of the box body, caulking strength der least 15N less 2N of each caulking portion is, the cutting blade is fixed by caulking at five or more locations, caulking strength of the caulking portion other than the both ends with 1N least 10N or less Yes, the caulking fixing strength of the caulking fixing portion closest to the center is 10% to 70% of the caulking fixing strength of each caulking fixing portion at both ends, and the caulking fixing strength of the caulking fixing portion closest to the center. 10% to 70% of the caulking fixing strength of each caulking fixing portion located next to each caulking fixing portion at both ends, and the caulking fixing strength of each caulking fixing portion at each end is fixed to each caulking fixing at both ends. A wrap film storage box that is larger than the caulking fixing strength of each caulking fixing part located next to the caulking part .
(2) The wrap according to (1), wherein the cutting blade has a narrower interval between each of the caulking fixing portions at both ends and the adjacent caulking fixing portion than an interval between other caulking fixing portions. Film storage box.

  According to the present invention, the caulking fixing strength is set so as to satisfy a predetermined condition, so that the cutting blade does not come off or drop off during transportation or practical use, and the cutting performance is not deteriorated. It becomes easy to peel off the cutting blade from the caulking fixing portion when the subsequent cutting blade is discarded. Moreover, it is possible to prevent the cutting blade peeled off at the time of disposal from repelling to the hand that picked up the cutting blade, and to reduce the injury caused by the cutting blade.

It is a perspective view which shows the state which assembled the wrap film storage box of this invention, opened the cover part, and pulled out the film. It is a schematic diagram which shows the shape of the paperboard for manufacturing the wrap film storage box of this invention. It is explanatory drawing which shows the structure which fixed the saw blade to the lid piece. It is explanatory drawing which shows the position of the crimping fixing | fixed part of the saw blade fixed by crimping to the lid piece.

  Embodiments of the present invention will be described below. In addition, the following embodiment is an illustration for demonstrating this invention, and this invention is not limited only to the embodiment.

  FIG. 1 is a perspective view showing an outline of a wrap film storage box according to the present embodiment, and FIG. 2 is a development view of the front side of the wrap film storage box of FIG.

  A wrap film storage box A shown in FIG. 1 is an example of a rectangular columnar shape that is widely marketed and widely used. In FIG. 1, a wrap film storage box A is a box main body having a storage portion M having an open top surface and capable of storing a cylindrical wound wrap film R, and a lid portion N capable of opening and closing the top opening of the storage portion M. have. The storage portion M includes a front plate 1, a bottom plate 2, a rear plate 3, side plates 4 connected to both ends of the bottom plate 2 in the longitudinal direction, and auxiliary side plates connected to both ends of the rear plate 3 in the longitudinal direction. 13 and auxiliary side plates 12 connected to both ends of the front plate 1. An edge folded piece 10 that is folded back on the back side of the front plate 1 is connected to the upper edge of the front plate 1, and guide pieces 11 are connected to both sides in the longitudinal direction of the edge folded piece 10. Note that the edge folded piece 10 may or may not be present, and may be adhered to the back surface of the front plate 1. A temporary fastening portion Q for temporarily fastening the end portion of the wrap film F is provided on the surface of the front plate 1.

  The lid portion N extends from the upper end edge of the rear plate 3 of the storage portion M in a direction covering the upper surface opening of the storage portion M, and extends from the cover plate 5 to the front plate 1 side of the storage portion M. Connected to the tip of the lid cover piece 6, the side plate 9 connected to both longitudinal ends of the lid plate 5, the auxiliary side plate 14 connected to both longitudinal ends of the lid cover piece 6, and And an open piece 8.

  The opening piece 8 is formed in a band shape along the longitudinal direction of the wrap film storage box A. The opening piece 8 is connected to the distal end edge of the lid cover piece 6 through a cut line 7. Before opening, the opening piece 8 is bonded to the lower surface of the front plate 1. The lid N is sealed by the opening piece 8, and the lid N can be opened by cutting the opening piece 8 along the cut line 7.

  A saw blade K as a cutting blade for cutting the wrap film F drawn from the wound wrap film R of the storage portion M is provided on the back side of the distal end portion of the lid cover piece 6. The saw blade K is, for example, a long rectangle, and is provided across both ends in the longitudinal direction of the wrap film storage box A (the lid cover piece 6). The saw blade K is exposed at the leading edge of the lid cover piece 6 when the opening piece 8 is cut off.

  The saw blade K is attached to the lid piece 6 by caulking. As shown in FIGS. 3 and 4, the saw blade K is caulked and fixed to a plurality of places (7 places in FIG. 4) including two places on both ends with respect to the lid cover piece 6. The “both ends” of the lid piece here includes not only the end but also the vicinity of the end. As shown in FIG. 3, a pair of crimping claws 20 are formed on the saw blade K, and the crimping claws 20 are inserted into the paperboard of the lid cover piece 6 as shown in FIG. The tips of the caulking claws 20 are in a state where they are tilted laterally outward. In order to allow the tip end portion of the crimping claw 20 to lie sideways in the paperboard of the lid cover piece 6, for example, the crimping claw 20 is erected vertically with a saw blade K, and the tip of the swaged claw 20 is raised. The portion is bent outward at an angle of about 20 to 40 degrees in the dimension range from the toe to the middle of the nail, and the tip of the crimped claw 20 in the bent state is inserted into the paper plate of the lid piece 6; A method of caulking the caulking nails 20 is used. The bending shape of the crimping claw 20 may be a shape where a straight line is bent at one place, a shape where a straight line is bent at two or three places, or the like, but a bent shape having a curvature is desirable.

  The strength (crimping strength) of the crimping fixing portions P1 and P2 at both ends in the longitudinal direction of the saw blade K shown in FIG. 4 is 2N or more and 15N or less, and preferably 2N or more and 8N or less. If the caulking fixing strength of the caulking fixing portions P1 and P2 at both ends exceeds 15N, the fixing strength of all caulking fixing is strong, so that the saw blade K is difficult to peel off at the time of disposal. Further, if the caulking fixing strength of the caulking fixing parts P1, P2 at both ends is less than 2N, the saw blade K may be detached or dropped during transportation or practical use. The caulking fixing strength is a force necessary for peeling the caulking claw 20 from the lid lid piece 6.

  Further, when the saw blade K is fixed by crimping at three or more places, the crimping fixing strength of the crimping fixing parts P3 to P7 other than the crimping fixing parts P1 and P2 at both ends is preferably 1N or more and 10N or less, More preferably, it is 1N or more and 6N or less.

  Further, when crimping is fixed at three or more locations including both ends, the crimping fixing strength of the crimping fixing portion P7 located closest to the center is 10% or more of the crimping fixing strength of the crimping fixing portions P1 and P2 at both ends. % Or less, more preferably 20% or more and 60% or less.

  Furthermore, when caulking is fixed at five or more locations, the caulking fixing strength of the caulking fixing portion P7 located closest to the center is such that the caulking fixing portions P3, P4 located next to the caulking fixing portions P1, P2 at both ends. It is preferable that it becomes 10% or more and 70% or less of the caulking fixing strength. In addition, when there are two caulking fixing portions located closest to the center as in the case where the number of caulking fixing portions is even and symmetrical, the average of the caulking fixing strengths of the two caulking fixing portions close to the center Is calculated and used as the caulking fixing strength of the caulking fixing part closest to the center.

  By satisfying the above condition with no perforation as in this embodiment, the cutting performance does not deteriorate when the wrap film F bites into the wrap film F, and the use ends. When the saw blade is peeled later, the saw blade K can be safely and easily peeled from the lid cover piece 6.

  The saw blade K may be made of metal, and in the case of being made of metal, it may be made using a thin metal plate such as tinplate. When a metal plate is used, the thickness of the saw blade K is preferably in the range of 0.15 mm to 0.30 mm. The material of the saw blade K may be non-metallic. When a non-metallic material is used, the thickness of the saw blade K is preferably in the range of 0.15 mm to 0.30 mm.

  There is no limit to the number of crimping fixing parts, but there is no concern about the wobbling or dropping of the saw blade K if the crimping is fixed at least at five locations.

  Further, in the above embodiment, as shown in FIG. 4, the distance D1 between the respective caulking fixing parts P1, P2 at both ends and the caulking fixing parts P3, P4 adjacent thereto is the other caulking fixing part P3. It is preferable that the distance is smaller than the distance D2 between adjacent P7. By reducing the distance D1 between each crimping fixing part P1, P2 at both ends and the adjacent crimping fixing parts P3, P4, the saw blade K rebounds at the end of peeling when the saw blade K is peeled off. This can be suppressed.

  In the above embodiment, the cutting blade that cuts the wrap film is the saw blade K, but the present invention can also be applied to cutting blades of other shapes. The shape of the cutting blade is not particularly limited as long as it is a conventionally known shape such as a straight shape, a V shape, an arch, or an M shape.

  Below, an example of the caulking fixation method of the saw blade to the wrap film storage box of this invention is demonstrated. The wrap film storage box A is formed by folding the side plates 4 and the auxiliary side plates 12 and 13, and the side plates 9 and the auxiliary side plates 14 together by bending substantially at right angles at the respective folding lines. . The attachment of the saw blade K is generally performed at the stage of this paperboard (mounting board) as shown in FIG. For example, for a long thin metal sheet that has been cut to a certain width and wound in a roll shape, the cut end is cut into a saw blade shape with a die sequentially from the tip edge, and at the same time at multiple locations in the longitudinal direction of the cut thin metal sheet A small cut is made, and the inserted cut is erected to form the crimping claw 20, and the metal saw blade K having the crimping claw 20 is created. Then, the flat paperboard that will be the wrap film storage box A prepared in advance is turned upside down, and a metal saw blade is applied so that the blade edge protrudes to the opening piece 8 side at the leading edge of the lid cover piece 6 of the paperboard. By pressing, the caulking claw 20 of the metal saw blade K is inserted into the paperboard. The inserted crimping claw 20 is tilted sideways and fixed with caulking to complete a paperboard with a metal saw blade K.

  Examples of the present invention will be described below.

The caulking fixing strength was measured as follows.
Lift the edge of the saw blade K fixed to the paperboard, and bend the saw blade K to 90 ° so that the angle between the edge of the saw blade K fixed to the paperboard and the raised saw blade K is 90 ° The saw blade K was pulled up while sliding the paperboard in the longitudinal direction of the saw blade K, and the force when the fixed crimping claw 20 was peeled was measured.

[Examples 1 to 9]
In the first to ninth embodiments, as shown in FIG. 3, the caulking claw 20 is inserted into the paperboard, and the inserted caulking claw 20 is tilted sideways to be caulked and fixed. The caulking fixing strength is in the range of 2N to 15N, and the caulking fixing strength of the caulking fixing portion other than both ends is in the range of 1N to 10N. Further, the caulking fixing strength of the caulking fixing portion closest to the center (centering caulking fixing portion) is not less than 10% and not more than 70% of the caulking fixing strength of the caulking fixing portions at both ends. Further, the caulking fixing strength of the caulking fixing portion at the center is not less than 10% and not more than 70% of the caulking fixing strength of the caulking fixing portion adjacent to the caulking fixing portion at both ends. Using the wrap film storage box A provided with the saw blade K, the saw blade K wobbles when cutting according to the evaluation criteria described later, the saw blade K falls off when the storage box drops, and the saw blade K rebounds when the saw blade is peeled off. The return was evaluated.

[Comparative Examples 1 and 2]
In this comparative example 1, as shown in FIG. 3, the caulking claw 20 is inserted into the paperboard, and the inserted caulking claw 20 is tilted sideways to be caulked and fixed. The caulking fixing strength of the caulking fixing portion is 20N, and the caulking fixing strength of each caulking fixing portion other than the four locations is 10N. Further, the caulking fixing strength of the caulking fixing portion at the center is 50% of the caulking fixing strength of each caulking fixing portion at both ends. Further, the caulking fixing strength of the caulking fixing portion at the center is 50% of the caulking fixing strength of each caulking fixing portion at both ends.

  In this comparative example 2, as shown in FIG. 3, the caulking claw 20 is inserted into the paperboard, and the inserted caulking claw 20 is tilted sideways to be caulked and fixed, and the caulking of each caulking fixing portion at a total of two locations at both ends. The fixing strength is 1.5N, and the caulking fixing strength of each caulking fixing portion other than both ends is 0.5N. Further, the caulking fixing strength of the caulking fixing portion at the center is 33% of the caulking fixing strength at both ends. Further, the caulking fixing strength of the caulking fixing portion at the center is 100% of the caulking fixing strength of each caulking fixing portion second from both ends.

  Each saw blade K is a packaging container (paper of approximately 31 cm in length, 4.5 cm in width, 4.5 cm in height) used in “Saran Wrap (registered trademark)” manufactured and sold by Asahi Kasei Home Products Co., Ltd. To a container made of And the wrap film of the polyvinylidene chloride accommodated in this packaging container was actually cut | disconnected. Table 1 shows the above specifications of Examples 1 to 9 and Comparative Examples 1 and 2.

[Evaluation criteria and results]
The evaluation method and evaluation scale used in the present invention are as follows, and each evaluation result and pass / fail (◎,
○: Pass, x: Fail) are shown in Table 2.

(1) The wobbling of the saw blade K during cutting The wrap film F is pulled out from the wrap film storage box A so that the lid cover piece 6 and the wrap film F are at right angles, and the storage box A is closed and the wrap film F is kept vertical. It was pulled, and it was evaluated whether or not the saw blade K was detached. After the evaluation, it was confirmed whether or not the saw blade K was detached. Each of Examples 1 to 9 and Comparative Example 1 were acceptable, but Comparative Example 2 was unsuccessful because the caulking of the center caulking fixing portion was seen at the seventh time.

(2) Saw blade K falling off when storage box is dropped Wrapping wrap film R is put into wrap film storage box A, and storage box A is dropped 10 times from a height of 120 cm. evaluated. After falling 10 times, it was confirmed whether the saw blade K was not dropped. Each of Examples 1 to 9 and Comparative Example 1 were acceptable, but Comparative Example 2 was unsuccessful because the caulking of the center caulking fixing portion was seen at the seventh time.

(3) Splashing of the saw blade K when peeling off the saw blade The wrap film storage box A is unfolded into a paperboard state, the end of the saw blade K in the longitudinal direction is picked, and the saw blade K and the saw blade K fixed by crimping The saw blade K was peeled off so that the hand that picked up the end of the saw was vertical. After the saw blade K was peeled off, it was confirmed whether both ends of the saw blade K that had been peeled off were rounded more than once. Also, when the rounding is more than one round, × when the distance between both ends of the saw blade K is less than 15 cm but not rounded more than one round, ○ When the distance between both ends of the saw blade K is rounded more than one round is 15 cm The above cases were marked as ◎. Each of Examples 1-9 and Comparative Example 2 were acceptable, but Comparative Example 1 had a high caulking fixing strength, so that it was rounded more than once, and the saw was peeled off at the end of the saw blade K. Since the edge of the blade K hit, it was a failure.

  From the above results, the saw blade K fixed to the wrap film storage box A of the present invention retains the cutting performance of the conventional (commercially available) product, and the saw blade K is detached or dropped during transportation or practical use. However, there is an effect that the saw blade K can be easily peeled off from the lid cover piece 6 when the saw blade is peeled off after use. Further, it is possible to prevent the peeled saw blade K from repelling to the hand where the end of the saw blade K is picked, and to reduce injuries when the saw blade is peeled off.

  INDUSTRIAL APPLICABILITY The present invention is useful in providing a wrapping film storage box that can safely and easily be removed at the time of disposal without degrading the cutting performance of the cutting blade.

DESCRIPTION OF SYMBOLS 1 Front plate 2 Bottom plate 3 Rear plate 4 Side plate 5 Lid plate 6 Cover lid piece 7 Cut line 8 Opening piece 9 Side plate 10 Folded piece 11 Guide piece 12 Auxiliary side plate 13 Auxiliary side plate 14 Auxiliary side plate 20 Caulking claw A Wrap Film storage box F Wrap film K Saw blade M Storage chamber N Cover part Q Film temporary fastening member R Rolled wrap film P1 to P7 Caulking fixing part

Claims (2)

A box body having a lid portion for storing a cylindrical wound wrap film; and a wrap film provided on the lid portion of the box body along the longitudinal direction thereof and drawn from the wound wrap film of the box body. A wrap film storage box having a cutting blade for cutting,
The cutting blade, the box being caulked at two locations of at least the longitudinal ends relative to the cover portion of the body, Ri caulking strength der least 15N less 2N of each caulking portion of the opposite ends,
The cutting blade is caulked and fixed at 5 or more locations,
The caulking fixing strength of the caulking fixing part other than the both ends is 1N or more and 10N or less,
The caulking fixing strength of the caulking fixing portion closest to the center is 10% to 70% of the caulking fixing strength of each caulking fixing portion at both ends,
The caulking fixing strength of the caulking fixing portion closest to the center is 10% or more and 70% or less of the caulking fixing strength of each caulking fixing portion located next to each caulking fixing portion at both ends,
The wrap film storage box , wherein the crimping fixing strength of each crimping fixing part at both ends is larger than the crimping fixing strength of each crimping fixing part located next to each crimping fixing part at both ends . 2. The wrap film storage box according to claim 1, wherein the cutting blade has a narrower gap between each crimping fixing portion at both ends and a neighboring crimping fixing portion than an interval between other crimping fixing portions. .

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