CN101873970A

CN101873970A - Cutting blade for packaging container, and packaging container having the same

Info

Publication number: CN101873970A
Application number: CN200880117791A
Authority: CN
Inventors: 关孝幸; 天野嘉和
Original assignee: Kureha Corp
Current assignee: Kureha Corp
Priority date: 2007-11-27
Filing date: 2008-11-13
Publication date: 2010-10-27
Also published as: JP2009126570A; WO2009069475A1; EP2233403A4; TW200942455A; EP2233403A1; JP5235072B2

Abstract

A cutting blade (24) for a packaging container has a center area (28) and side areas (30) on both sides of the center area. The center area (28) has first teeth (38) having a large tooth height and also has second teeth having a lower tooth height than the first teeth. One of the first teeth (38) is placed at the apex of a V-shape, the remaining first teeth (38) are arranged at predetermined intervals with the first tooth (38) at the apex located at the center of the V-shape, and the second teeth are arranged between the first teeth. The crest of the first tooth (38) placed at the apex of the V-shape is, when mounted on a predetermined position of the packaging container, bent to the side opposite to a front wall surface of a lid body of the packaging container. A straight line (L2) connecting the crests of the second teeth is located between a straight line (L1) connecting the crests of the first teeth and a third straight line connecting the roots of the first and second teeth. The side areas (30) each have side teeth (31), and the crests of the side teeth (31) are located on L2 or between L2 and L3.

Description

Packing container is with cutting off sword and having the packing container of this cut-out sword

Technical field

The present invention relates to a kind of be used to accommodate with tubular be wound on employed cut-out sword on the packing container of the preservative film on the core cylindraceous and this packing container.

Background technology

Known in the past have various forms of preservative film packing containers.Its majority is a ground paper system, and by take in the container body that is rolled into barrel-contoured preservative film, and and the lid that is wholely set of this container body constituted.And the jagged cut-out sword on the back side of the front side wall of the preservative film of extracting out in container by being installed on lid is cut off.

As this cut-out sword,, use the pars intermedia that cuts off sword to replace being shaped as the cut-out sword of linearity than the cut-out sword of the V-shape on the more close container of lateral region base in order easily to cut off film.This V word shape is to begin to cut off preservative film by the most outstanding part of cutting off sword certainly, thus can be reliably and the shape of easily cutting off.

Generally speaking, consider cuttability and durability, use metal to make this cut-out sword, but consider in recent years environmental problem and the user for the misgivings of safety, studying the cut-out sword of made of paper or resinous non-metal system.

The cut-out sword of this non-metal system is difficult to bring into play as the excellent cutting as the metal cut-out sword, the bigger strength of needs, therefore needs raising cuttability when particularly cutting off the preservative film that polyethylene (polyethylene), polypropylene (polypropylene), the polyvinylidene chloride (polyvinylidene chloride) be imbued with retractility wait.

In order to tackle described requirement, the cut-out sword of different shape has been proposed.For example proposed following cut-out sword (for example, patent documentation 1,2), that is, by at the bigger tooth of the apex of V word configuration, made tooth easily at the cut-out initial stage preservative film of nipping.

Patent documentation 1: No. 2547868 communique of Japan registration utility model

Patent documentation 2: Japan opens flat 7-11527 communique in fact

Present inventors have a formation of various teeth to utilization V word shape cuts off cuttability, sharpness and the durability of sword when cutting off preservative film and studies.The result learns as patent documentation 1 and 2 the cut-out sword of V word shape in the past, and the cuttability when it cuts off preservative film is also insufficient.

Summary of the invention

The present invention is the invention of making in view of described situation, and it is a kind of by making the shape optimization of cutting off sword have the cut-out sword of very excellent cuttability and good sharpness and the packing container that possesses this cut-out sword that its purpose is to provide.

That is, the cut-out sword of the metal V word of cut-out sword right and wrong of the present invention shape, the back side that it is installed on the front side wall in the lid of the packing container of accommodating the tubular packing material is used to cut off described tubular packing material, it is characterized in that:

(a) described cut-out cutlery contains the middle section and the lateral region that is disposed at the both sides of described middle section of the apex of V word fully,

(b) to have many first identical teeth of the tooth depth of each tooth and tooth depth lower and tooth depth each tooth is identical manys second tooth than described first tooth for described middle section,

(c) tooth in described first tooth is disposed at described apex, and other tooth in described first tooth is the arranged spaced of center with regulation with first tooth of described apex,

(d) described second tooth is configured in described first between cog,

(e) connect second straight line of the crown of described second tooth, between the 3rd straight line of first straight line of the crown that connects described first tooth and the tooth root that is connected described first tooth and described second tooth,

(f) be installed under the state of assigned position of described packing container at this cut-out sword, the leading section of first tooth that is disposed at described apex is towards the opposition side bending of the front side wall of described lid,

(g) described lateral region has many sidepiece teeth, and the crown of described sidepiece tooth is on described second straight line or between described second straight line and described the 3rd straight line.

By the middle section of said structure is set in cutting off sword, to cut off sword when being installed on packing container and cutting off as the preservative film of medium etc., be divided into two following stages: the cut-out initial stage " puncture " stage, it utilizes the middle section that cuts off sword to cut off; With and subsequent " " in the stage, its lateral region of utilize cutting off sword is cut off in incision.And " puncturing " stage is split into that second tooth that punctures operation and utilize tooth depth to be lower than first tooth that utilizes the first the highest tooth of tooth depth to carry out carries out punctures two operations of operation.At the cut-out initial stage, the tooth that contacts with preservative film only is first tooth, therefore, punctures that required power is less to get final product.In addition, can need puncture preservative film at full tilt because of the resistance of the paddy portion of first between cog when only using first tooth, but utilize after first tooth punctures, second tooth just can run through preservative film, thus, can successfully puncture preservative film.In addition, can need puncture preservative film at full tilt because of the resistance of the paddy portion (tooth root) of first between cog when only using first tooth, but utilize after first tooth punctures, second tooth just can run through preservative film, thus, can cut off " puncturing " stage of at first preservative film being carried out more easily.In addition, be disposed at the leading section of first tooth of apex of the V word of cut-out sword of the present invention, with the outstanding mode bending of opposition side towards the front side wall side of lid.The crown direction that makes this leading section is towards the preservative film that will cut off, and will cut off sword and be installed on the lid of packing container, thus, can more easily carry out initial the puncturing for preservative film.

And in case " puncturing " in the stage, formed punctured part at the middle body of preservative film, then the incision of preservative film subsequently need not bigger power, and in lateral region, preservative film will successfully be cut, thereby preservative film is cut off.In addition, the tooth depth of each tooth shortest distance that can be used as the crown of the 3rd straight line that to connect a plurality of bottoms by the adjacent formed groove of tooth be tooth root and this tooth is measured.

Cut-out sword of the present invention is preferably under the state of the assigned position that is installed on packing container, is disposed at the opposition side bending of the leading section of the leading section of first tooth of middle section and second tooth towards the front side wall of lid.

Like this, have leading section at outstanding first tooth of middle section and the cut-out sword of second tooth, do not compare to the outstanding flat sword of the opposition side of the front side wall side of lid with leading section, the rigidity of thickness direction is higher.Therefore, cut off sword and be difficult to distortion, thereby when cutting off preservative film, can suppress to cut off the front side wall protuberance of sword from the packing container main body.Therefore, can non-skidly crown be punctured preservative film during cut-out.In addition, can by be arranged in the lateral region the lower sidepiece tooth of tooth depth and easily from " puncturing " step transition to " incision " stage.

Cut-out sword of the present invention is preferably, be installed at this cut-out sword under the state of assigned position of described packing container, the face (hereinafter referred to as " interarea ") of this cut-out sword of the side of joining perpendicular to the back side with described front side wall and comprise the crown of leading section of described first tooth or the elevation profile of the crown of the leading section of described second tooth in, the crown direction of described leading section is with respect to the angle θ of the front side wall one-tenth regulation of described lid, and described angle θ is 10 °～40 °.

First tooth of cut-out sword and the leading section of second tooth thus, when being installed on packing container and cutting off preservative film, can just puncture preservative film at the cut-out initial stage more easily with described angular bend.In addition, for having leading section for the cut-out sword of the tooth of described angular bend, the rigidity of thickness direction is higher, and has sufficient durability.Therefore, excellent more for the cuttability of preservative film, and have good sharpness.

Cut-out sword of the present invention is preferably, be installed at this cut-out sword under the state of assigned position of described packing container, perpendicular to the face (interarea) of this cut-out sword and comprise the crown of leading section of first tooth or the elevation profile of the crown of the leading section of second tooth in, be 1.2～7 in the length that is parallel to the described leading section on the direction of interarea with respect to the ratio of the projecting height of leading section.

But excellent cuttability, good sharpness and durability are realized in such cut-out sword higher level ground.

In addition, be preferably, lateral region has alternately different two kinds of sidepiece teeth of size of tooth depth of configuration.

Like this, in lateral region, alternately dispose two kinds of sidepiece teeth of the different size of tooth depth, thus, the stage, can reduce the radical of the sidepiece tooth that contacts with preservative film simultaneously during the stage and in " incision " from " puncturing " step transition to " incision ".Therefore, than the situation of many sidepiece teeth that possess identical tooth depth, can be more successfully from " puncturing " step transition to " incision " stage, and can preservative film be cut and cut off with littler power.

In addition, be preferably, the leading section of sidepiece tooth is towards the opposition side bending of the front side wall of lid.

Like this, as long as cut off the leading section of sidepiece tooth that sword is arranged in the leading section of the canine tooth of middle section and tooth and is positioned at lateral region all with the outstanding mode bending of opposition side towards the front side wall of lid, then can be more successfully from " puncturing " step transition of preservative film to " incision " stage.In addition, the leading section of sidepiece tooth with lateral region is also towards this cut-out sword of the outstanding sidepiece tooth of the opposition side of the front side wall side of lid, and the rigidity of its thickness direction is excellent more.Therefore, when cutting off preservative film, cut off sword and be difficult to distortion, thereby can suppress to cut off the front side wall protuberance of sword fully from packing container.Therefore, can further improve cuttability for preservative film.

In addition, be preferably, also possess end regions on the end of the cut-out sword of cut-out sword of the present invention in the outside of lateral region, this end regions has the end tooth of tooth depth than the sidepiece tooth depth of lateral region.

Like this, the end configuration tooth depth of the cut-out sword in the outside of lateral region is than the tooth of the sidepiece tooth depth of lateral region, thus, when from the end of preservative film but not when the central portion of preservative film began to cut off preservative film, the cut-out of preservative film also was split into " puncturing " stage and these two stages in " incision " stage.At the cut-out initial stage, the tooth that contacts with preservative film only is the higher end tooth of tooth depth on the end regions in the outside that is disposed at lateral region, and required power is less to get final product so puncture.Therefore, begin to cut off in end under the situation of preservative film and and begin to cut off under the situation of preservative film, all can easily cut off preservative film at central portion from preservative film from preservative film.

In addition, the hypotenuse of at least one in first tooth, second tooth, sidepiece tooth and the end tooth becomes recessed to the inside circular-arc,, the shape of tooth is made as being shaped as of so-called ginkgo leaf that is.

If be made as described shape, then, can when being made as acute angle, the crown angle enlarge space of tooth for guaranteeing cuttability.Thus, the radical that need not to increase the tooth in the regular length scope get final product, thereby required power becomes greatly can suppress to puncture preservative film the time.In addition, owing to become big more, therefore also can obtain to improve the effect of the durability of tooth the closer to terminal width.

In addition, the present invention also provides a kind of packing container, and it possesses: container body, and it accommodates the tubular packing material; Lid, its mode and container body with the part of the front side wall of covering container main body is wholely set; And be installed on above-mentioned cut-out sword on the back side of front side wall of lid.

This packing container is owing to possess the cut-out sword with described feature, and is therefore very excellent for the cuttability as the preservative film of medium etc., and has good sharpness and sufficient durability concurrently.

The effect of invention

According to the present invention, can provide a kind of by making the shape optimization of cutting off sword have the cut-out sword of very excellent cuttability and good sharpness and the packing container that possesses this cut-out sword concurrently.

Description of drawings

Fig. 1 is the block diagram that expression is suitable for the state of packing container 10 of the present invention.

Fig. 2 is the enlarged drawing of central portion of the cut-out sword of preferred implementation of the present invention.

Fig. 3 is the figure that is used for illustrating along the section constitution of the I-I line of Fig. 2.

Fig. 4 is vertical with the interarea that cuts off sword 24 and comprises the longitudinal section of the packing container 10 among Fig. 1 of crown of canine tooth 38 or little tooth 36.

Fig. 5 is the operation cutaway view of manufacture method of schematically representing the packing container of present embodiment.

Fig. 6 is the enlarged drawing of central portion of the cut-out sword of another embodiment of the present invention.

Fig. 7 is the lateral region of a side of cut-out sword of another embodiment of the invention and the partial enlarged drawing of end regions.

Fig. 8 (a), Fig. 8 (b) are the figure that schematically represents the cut-out shape of the preservative film that cut off.

Description of reference numerals

3 leading sections

5 main parts

10 packing containers

12 paper tubes

14 preservative films

16 container bodies

18 lids

The top margin of the back face wall of 20 container bodies

The front side wall of 22 lids

23 back sides

24 cut off sword

The 24a interarea

The base of 26 container body front side wall

27 front wall of container body

28 middle sections

29 end regions

30 lateral region

31 sidepieces, 1 tooth (sidepiece tooth)

32 sidepieces, 2 teeth (sidepiece tooth)

35 little teeth

36, tooth (second tooth) among 36a, 36b, 36c, the 36d

38,38a, 38b, 38c canine tooth (first tooth)

40 end tooth

60 sword materials

70 counterdies

72 patrixes

76 ultrasonic oscillators

78 processing parts

The specific embodiment

Fig. 1 is the block diagram that expression is suitable for the form of packing container 10 of the present invention.This packing container 10 is by a ground paper, is preferably made by coated duplex board with grey back.As shown in Figure 1, packing container 10 is made of container body 16 and lid 18, and this container body 16 is used to accommodate with tubular and is wound on preservative film 14 on the paper tube 12 cylindraceous, and this lid 18 is wholely set with this container body 16.When close cap, the global shape of this packing container 10 is roughly rectangular shape.In addition, in the present embodiment, preservative film is formed by polyvinylidene chloride (polyvinylidenechloride).

The top of container body 16 is as opening wide in order to the peristome of extracting preservative film 14 out.In addition, lid 18 extends continuously from the top margin 20 of the back face wall of container body 16.Therefore, lid 18 can rotate with respect to container body 16, and constitute can covering container main body 16 peristome and the part of front wall of container body 27.

The front-end edge of the front side wall 22 of lid 18 is V word shape, in conjunction with this shape, cuts off sword 24 and also can use V word shape.Adopted the packing container 10 of the cut-out sword 24 of this V word shape to cut off under the situation of preservative film 14 in use, as shown in Figure 1, pinch the leading section of preservative film 14 with a hand, and hold packing container 10 with another, simultaneously the thumb of this hand is attached to the central portion place of lid front surface 22, towards the front side, be that the direction of arrow A is rotated packing container 10.Thus, the tooth of middle section that is positioned at the cut-out sword 24 of V word shape runs through preservative film 14, and when tractive preservative film 14 under this state, preservative film 14 can be cut open and cut off.

Below, the cut-out sword 24 of present embodiment is described in detail.

Fig. 2 is the enlarged drawing of central portion of the cut-out sword of more preferably embodiment of the present invention.The major component of cutting off sword 24 is an alkide resin.Such cut-out sword 24, thus can obtain by the common sheet material that contains alkide resin being implemented the tooth that stamping-out processing or laser cutting method be configured as shape of the present invention.

The cut-out sword 24 of present embodiment is that the center becomes left-right symmetric with the line of centers (the symbol CL among Fig. 2) on the summit by the V word, and is divided into middle section 28 and is positioned at the lateral region 30 of the both sides of this middle section 28.

Tooth in the lateral region 30 (sidepiece tooth) 31 is fixing size, and the smaller tooth of use and common in the past employed tooth same degree.Below, the tooth of this size is called " little tooth ".

As shown in Figure 2, the middle section 28 of present embodiment is made of 15

rooted teeth

35,36,38.Tooth in the middle section 28 comprises three kinds of following teeth, that is, tooth that the little tooth 35 that the sidepiece tooth 31 of size and lateral region 30 is identical, tooth depth are higher than little tooth 35 (second tooth: below be called " middle tooth ") 36 and tooth depth than in the higher tooth of tooth 36 (first tooth: below be called " canine tooth ") 38.In addition, in the following description, the reference marks 36,38 of centering tooth and canine tooth suitably marks letter and subscripts.

1 (38a) in the canine tooth 38 is positioned at the apex (the length direction center of middle section 28) of the V word that cuts off sword 24, and

other canine tooth

38b, 38c are the center with the canine tooth 38a of central authorities, and with fixing interval about respectively dispose two.Can utilize straight line connect central authorities number one canine tooth 38a crown be positioned at about No. second of each side and No. three canine tooth 38b, the crown of 38c, about this straight line (first straight line) L1 of each side, be arranged in middle section 28 about the more close front side of crown (away from a side of the front-end edge of the lid front side wall 22 of Fig. 1) of tooth 36 of each side.

In addition, the middle tooth 36 in the middle section 28 about each side dispose 4 respectively, dispose 8 altogether.Between

canine tooth

38a, 38b, 38c, other 4

middle tooth

36c, 36d are configured in the outside of No. three canine tooth 38c to 4

middle tooth

36a, 36b of center side with identical distance with fixing arranged spaced.The crown of

middle tooth

36a, 36b, 36c and the 36d of each side about can utilizing straight line L2 (second straight line) to connect, about this straight line L2 of each side the 3rd straight line (L3) of being parallel to described straight line L1 in fact and connecting tooth root, and the more close rear side of more described straight line L1 (near a side of the front-end edge of lid front side wall 22).That is, straight line L2 is between straight line L1 and straight line L3.

In addition, the straight line of the crown of the sidepiece tooth 31 about connection in the lateral region 30 of each side (the 4th straight line) L4, straight line L1, the L2 and the L3 that are parallel to homonymy in fact, and than this straight line L1 and the more close rear side of L2 (near a side of the front-end edge of the front side wall 22 of lid).That is the straight line L4 of each side is between straight line L2 and L3.

And, the little tooth 35 of middle section 28 about each side be disposed between middle tooth 36c, the 36d of No. three and No. four, and its crown is positioned on the extended line of straight line L4 of crown of the sidepiece tooth 31 that connects lateral region 30.

In the cut-out sword 24 of present embodiment, with little tooth 35, middle tooth 36, canine tooth 38, and sidepiece tooth 31 crown angle [alpha] separately be made as the angle that is suitable for puncturing preservative film 14.In the present embodiment that preservative film 14 is formed by polyvinylidene chloride, the scope of crown angle [alpha] is preferably 30 °～90 °, more preferably 40 °～70 °.If greater than 90 °, then must puncture preservative film 14 with great power, if less than 30 °, then can damage the durability of tooth 31～38 self.

In addition, little tooth 35, middle tooth 36, canine tooth 38, and sidepiece tooth 31 shape separately can be simple equicrural triangle shape, but in the present embodiment, preferably be made as the recessed to the inside circular-arc fan shape of hypotenuse or the shape of ginkgo leaf.Its reason is, can improve the durability of tooth when the crown angle [alpha] is remained described acute angle.In addition, when being made as described shape, compare, in identical length range, can reduce the radical of tooth with equicrural triangle, as described below, help to alleviate the required power of cutting off like this.

Fig. 3 is the figure that is used for illustrating along the cross section structure of the I-I line of Fig. 2.That is, Fig. 3 is the longitudinal section of cut-out sword 24 that comprises the crown of canine tooth 38c.Cut off the thickness D that sword 24 and canine tooth 38c have regulation.Canine tooth 38c has leading section 3, and and the integrally formed main part 5 of this leading section 3 of canine tooth 38c.The leading section 3 of canine tooth 38c from the main part 5 of canine tooth 38c with towards the outstanding mode bending of thickness direction (below Fig. 3) of cutting off sword 24.

Among Fig. 3, the leading section 3 of canine tooth 38c is integrally formed with mode and this main part 5 that the main part 5 with respect to canine tooth 38c forms the angle θ that stipulates.The length C that has regulation on the direction that is parallel to interarea 24a of the leading section 3 of canine tooth 38c in the cross section of Fig. 3.In addition, leading section 3 is on the thickness direction that cuts off sword 24, and the mode that reaches specified value with the maximum projecting height B from main part 5 is outstanding.Belong to other canine tooth 38a, the 38b of middle section 28 and

middle tooth

36a, 36b, 36c, also have with Fig. 3 in the identical cross-sectional configuration of canine tooth 38c.So, the cut-out sword 24 of present embodiment, its canine tooth 38 and middle tooth 36 bend to so-called olecranon shape.

Under the state of close cap, cut off on the back side of sword 24 is installed in lid 18 towards the front wall of container body 27 outstanding modes that covered by lid 18 (Fig. 1) with the crown of its canine tooth 38 and middle tooth 36 front side wall 22.Therefore, can easily puncture preservative film 14 by canine tooth 38 and the middle tooth 36 that cuts off sword 24.

In addition, be located in the cut-out sword 24 of the cross section structure that canine tooth 38 in the middle section 28 that cuts off sword 24 and middle tooth 36 have Fig. 3, compare the excellent rigidity on the thickness direction with flat cut-out sword.Therefore, when cutting off preservative film, cut-out sword 24 is difficult on its thickness direction and is out of shape, thereby can further improve the cuttability of preservative film.

Secondly, the packing container 10 that use is had a cut-out sword of the present embodiment situation of cutting off preservative film 14 describes.

At first, as shown in Figure 1, hold packing container 10 with one, pinch the leading section of preservative film 14 and extract desired amount out with the another hand.Then, the thumb of holding the hand of packing container 10 is attached to the central portion place of the front side wall 22 of lid, towards the front side, be that the direction of arrow A is rotated packing container 10.

At this moment, the canine tooth 38a by the number one that is positioned at the apex of cutting off sword 24 contacts with preservative film 14 at first, and punctures this preservative film 14.In addition, almost simultaneously, the canine tooth 38c of No. second canine tooth 38b and then No. three contacts with preservative film 14, and punctures this preservative film 14.Like this, what contact with preservative film 14 at first only is 5 canine tooths 38 of the bigger maximum of space of tooth, therefore, and at the cut-out initial stage, in order to rotate less the getting final product of power of packing container 10.That is be fixing because each canine tooth 38 punctures preservative film 14 required minimal power,, so only become the minimum force that rotates packing container 10 for about 5 times power of this power.As in the past, if reduce the crown angle and dwindle space of tooth, then the radical of the tooth that contacts with preservative film 14 can increase, and the power that therefore will inevitably cause being applied on the packing container 10 becomes big, also can damage the feel when using, but not have this problem in the present embodiment.

Fig. 4 is vertical with the interarea that cuts off sword 24 and comprises the longitudinal section of packing container 10 of Fig. 1 of the crown of canine tooth 38 or little tooth 36.As shown in Figure 4, the canine tooth that is installed on the cut-out sword 24 on the back side 23 of lid front side wall 22 has the cross-sectional configuration of the crown of its leading section 3 towards front wall of container body 27.Therefore, preservative film 14 that can be when beginning to cut off preservative film 14 is made as 10 °～40 ° with the crown direction angulation γ of the leading section 3 of canine tooth.Therefore, preservative film 14 is contacted with the crown point that cuts off sword 24 (canine tooth 38), thereby canine tooth 38 easily can be punctured preservative film 14.In addition, when 10 ° of described angle γ less thaies, the canine tooth 38 when puncturing preservative film 14 can increase with the area of contact of preservative film 14, therefore the tendency that exists excellent cutting to suffer damage.On the other hand, when described angle γ surpassed 40 °, the crown or the tooth root of the crown of canine tooth 38, canine tooth 38 and middle tooth 36 can catch on preservative film 14, therefore the tendency that exists good sharpness to suffer damage.

Next, middle tooth 36 contacts with preservative film 14, runs through preservative film 14 by tooth in these 36.Herein, if hypothesis do not exist in tooth 36, then because the spacing of 38 of canine tooths is bigger,, need bigger power cut preservative film 14 so the paddy portion of 38 in tooth becomes resistance.Yet in the present embodiment, after canine tooth 38 punctured preservative film 14, tight bonding middle tooth 36 ran through the preservative film 14 of 38 of canine tooths, therefore can successfully puncture preservative film 14.In addition, the quantity of the middle tooth 36 that contacts with preservative film 14 simultaneously mostly is most 8, but the quantity of the middle tooth 36 that contacts with preservative film 14 is less than 8 in fact simultaneously, in addition, after canine tooth 38 punctures preservative film 14, it is fragile that its periphery can become, required power when tooth 36 punctures in therefore utilizing, more required power when utilizing canine tooth 38 to puncture.So, from utilizing the cut-out that is cut to the subordinate phase that tooth carries out the utilization of the F/s that canine tooth 38 carries out, all can successfully carry out and can not allow the user feel resistance sense.

In addition, with canine tooth 38 in the same manner, the leading section of middle tooth 36 is also towards the opposition side bending of the front side wall 22 of lid.That is the mode bending of the leading section of middle tooth 36, to give prominence to towards the thickness direction that cuts off sword 24.As shown in Figure 4, middle tooth 36 like this has crown to construct towards front wall of container body 27 outstanding mode curved cross section, therefore, do not compare, can easily puncture preservative film 14 to cut off sword towards the tabular in the past of the outstanding mode bending of thickness direction with crown.

And, when present dynasty arrow A direction is rotated packing container 10, the little tooth 35 of middle section 28 will puncture No. three with No. four

middle tooth

36c, 36d between preservative film 14, the incision of preservative film 14 is towards lateral region 30 propellings.If be formed with fully big initial stage punctured part on the preservative film 14, then when cutting off preservative film 14 subsequently, need not king-sized power, in the lateral region 30 that is made of sidepiece tooth 31, industry can successfully cut preservative film 14 and cut off.

If use the cut-out sword 24 of present embodiment, then when cutting off preservative film 14, need not king-sized power, the essentiality that therefore can reduce to make the crown angle [alpha] of each

tooth

31,35,36,38 exceedingly to diminish, and then press the durability that can improve each

tooth

31,35,36,38.

In addition, cut off sword 24 and possess canine tooth 38 and middle tooth 36, this canine tooth 38 and middle tooth 36 have the thickness D of regulation, and have the leading section with the mode bending of giving prominence to towards front wall of container body 27, therefore, have high rigidity on the thickness direction that cuts off sword 24.When rotating packing container 10 towards the A direction and cutting off preservative film 14, though be applied with the power that the front side wall 22 of desiring to make lid 18 breaks away from front wall of container body 27, promptly, put on the power of cutting off sword 24 towards thickness direction (top among Fig. 3), but cut off sword 24 owing on thickness direction, have high rigidity, so not yielding.Therefore, can suppress to cut off sword 24 from front wall of container body 27 protuberances.Therefore, can puncture and cut preservative film 14 more easily, and can make the sharpness when cutting off become good.

The thickness that cuts off sword 24 is preferably 0.05～0.5mm, more preferably 0.1～0.3mm, more preferably 0.15～0.28mm.If it is excessive to cut off the thickness of sword, then there is the tendency that can't obtain abundant excellent cutting, if the thickness of cut-out sword is too small, then there is the tendency of the good sharpness of infringement.Be made as 0.15～0.28mm by the thickness that will cut off sword, can obtain to have concurrently simultaneously with higher level the cut-out sword of excellent cutting and good sharpness.In addition, the leading section 3 of canine tooth 38 and middle tooth 36 preferably has and the equal thickness of main part 5 (Fig. 3).

In addition, when exceedingly increasing the tooth depth of canine tooth 38 and middle tooth 36, cut off apart distance of sword 24 and fixed part, promptly cutting off sword 24 can be elongated with the front-end edge distance apart of lid front side wall 22, thereby might damage durability.In addition, if tooth depth is too high, then also might injure the user's of packing container 10 hand.Therefore, consider from the aspect of cuttability, durability and safety, for example, the tooth depth H1 of the canine tooth 38 of middle section 28 elects 1.0～4.0mm as, more preferably 1.2～3.5mm, more preferably 1.5～3.0mm, the tooth depth H2 of middle tooth 36 is preferably 1.0～3.0mm, 1.2～2.5mm more preferably, the tooth depth H3 of little tooth 35 is preferably 0.3～2.5mm, more preferably 0.5～2.0mm.

In addition, with regard to the space of tooth of middle section 28, the spacing that canine tooth is 38 is preferably 3.0～9.0mm, 4.0～7.0mm more preferably, 4.5～6.0mm more preferably, the spacing that middle tooth is 36 is preferably 3.0～9.0mm, more preferably 4.0～7.0mm, more preferably 4.5～6.0mm.Its reason is: when space of tooth surpasses 9.0mm, puncturing in the process of the F/s of preservative film 14, film 14 can be stuck in 38 of canine tooths paddy portion (tooth root) thus in hinder to cut off, when space of tooth is narrower than 3.0mm, the radical that is arranged at the tooth in the middle section 28 can increase, its result can cause puncturing required power and increase, thereby can't reach purpose of the present invention.

The radius of curvature of the front end of canine tooth 38 and middle tooth 36 is preferably 60～100 μ m.Cut-out sword 24 with this canine tooth 38 and middle tooth 36 has very excellent cuttability, and has very excellent durability.

The length C (Fig. 3) of the leading section 3 of canine tooth 38 and middle tooth 36 is preferably 0.05～1.0mm, more preferably 0.05～0.4mm.In addition, the maximum projecting height B of the leading section 3 of canine tooth 38 and middle tooth 36 is preferably 0.02～0.2mm, more preferably 0.02～0.1mm.The length C of leading section 3 is preferably 1.2～7 with respect to the ratio (C/B) of maximum projecting height B, and more preferably 2～6.Possess and have the canine tooth 38 that this ratio is 2～6 leading section 3 and the cut-out sword 24 of middle tooth 36, its cuttability to preservative film is particularly excellent, and has favorable durability.

In addition, the canine tooth 38 of middle section 28 and the main part of middle tooth 36 5 are preferably 10 °～40 °, more preferably 10 °～20 ° with leading section 3 angulation θ (Fig. 3).Possessing this angle θ is 10 °～20 ° the canine tooth 38 and the cut-out sword 24 of middle tooth 36, and its cuttability to preservative film is particularly excellent, and has favorable durability.

The tooth depth H3 of the sidepiece tooth 31 of lateral region 30 is preferably 0.3～2.5mm, more preferably about 0.5～2.0mm.In addition, the space of tooth of sidepiece tooth 31 is preferably 1.0～3.2mm, more preferably 1.2～2.5mm.

Secondly, the manufacture method of the cut-out sword of present embodiment is carried out following explanation.Fig. 5 is the operation cutaway view of manufacture method of schematically representing the packing container of present embodiment.Sword material 60 is the material of the cut-out sword 24 on the back side 23 of the front side wall 22 of the lid 18 that is installed on packing container.As sword material 60, can using in regular turn, lamination has resin bed, bonding coat, reach the commercially available lamination sheet material that seals material.

Be preferably with alkide resin, poly-vinyl resin, acrylic resin, polystyrene resin, acetal resin, polyphenylene sulfide, PEEK (polyetheretherketone as the resin bed in the lamination sheet material of sword material 60, polyetheretherketone) resin, PES (Polyethersulfone, polyethersulfone) resin etc. are major component.Wherein, being preferably with the alkide resin is major component.Thus, can more successfully carry out " puncturing " and " incision ", in addition, can make the durability that cuts off sword excellent more preservative film.Moreover, in the alkide resin, especially be preferably polyethylene terephthalate (polyethylene terephthalate, PET) resin, polylactic resin.

Resin bed can use the constituent that has added except that the composition this resinous principle in described resinous principle to form.As the composition beyond the resinous principle, except containing the inorganic filler that Japanese Patent disclosed for No. 3573605, also contain heat stabilizer, light stabilizer, moisture resisting agent, water repellant, mold release, pigment, dyestuff etc.As inorganic filler, can use the inorganic particle of barium sulfate, calcium carbonate, titanium oxide, silica, talcum etc.

Yet, consider that from the viewpoint of taking into account very excellent cuttability and durability with respect to whole resin bed, the content of alkide resin is preferably more than 80 percent by weight, more preferably more than 90 percent by weight.

Bonding coat is formed by polyurethane binding.In addition, can use modified polyvinyl resin to be used as sealing material.As modified polyvinyl resin, can enumerate vinyl-vinyl acetate copolymer, ethylene-methacrylic acid copolymer, and be the ionomer etc. of major component with the vinyl.In these, more preferably ethylene-methacrylic acid copolymer.

The thickness of sword material 60 is preferably 0.05～0.5mm, more preferably 0.1～0.3mm, more preferably 0.15～0.28mm.Utilize the sword material 60 of

counterdie

70 and 72 pairs of described sheets of patrix to carry out stamping-out processing, form thus and cut off sword 24.

In the patrix 72 of the cut-out sword 24 that is used to form present embodiment,, be formed with rake with the shape of the leading section complementation of cutting off sword 24 at the sword front end that the canine tooth 38 of middle section 28 and middle tooth 36 is carried out the processing part 78 of stamping-out processing.Thus, carry out stamping-out and add man-hour, the leading section of canine tooth 38 and middle tooth 36 forms towards the thickness direction that cuts off sword 24 outstanding.

Form when cutting off sword 24 utilizing counterdie 70 and patrix 72 counter blade materials 60 to carry out stamping-out, use the front side wall 22 irradiation super sonics of ultrasonic oscillator 76, this cut-out sword 24 can be bonded in the back side 23 (super sonic Method for bonding) of front side wall thus from the lid 18 of packing container.In addition,, the sealing material is bonded on the back side 23 of front side wall, can be fixed on the back side 23 of front side wall with cutting off sword 24 like this when using aforesaid lamination in regular turn that resin bed, bonding coat, and the lamination sheet material of sealing material during as sword material 60 are arranged.So, be bonded in cut-out sword 24 on the lid 18 of packing container, be fixed in by sufficient adhesive on the back side of front side wall of lid of packing container, therefore be difficult for peeling off from the lid of packing container by the sealing material.

By above manufacture method, can produce and possess the packing container 10 that cuts off sword 24 on the back side 23 of the front side wall in the lid of packing container.In addition, with cutting off the method at the back side of front side wall that sword is installed on the lid of packing container, also can be well-known cold glue method or pressure-sensitive adhesive method etc.

More than, preferred implementation of the present invention having been described in detail, the present invention is not limited to described embodiment certainly.

For example, Fig. 6 is the enlarged drawing of central portion of the cut-out sword of another embodiment of the present invention.The cut-out sword 24 of present embodiment is made of middle section 28 and the lateral region 30 that is positioned at its both sides, has the formation of the tooth identical with described embodiment in middle section 28.Yet the cut-out sword 24 of present embodiment is to possess two kinds of sidepiece teeth of the different size of tooth depth in lateral region 30 with the difference of the cut-out sword 24 of described embodiment.

In the lateral region 30 of the cut-out sword of Fig. 6, end wise alternately is provided with two kinds of sidepieces of the different size of tooth depth, 1 tooth 31, sidepiece 2 teeth 32.The tooth depth of sidepiece 2 teeth 32 is higher than sidepiece 1 tooth 31, and sidepiece 2 teeth 32 have the tooth depth that equates with the middle tooth 36 of middle section 28.Therefore, the straight line L2 of the crown of the middle tooth 36 of connection middle section 28 is by the crown of sidepiece 2 teeth 32 of lateral region 30.In addition, connect the little tooth 35 of middle section 28 and the straight line L4 of the crown of sidepiece 1 tooth 31 of lateral region 30, be parallel to the straight line L1 of the crown of the canine tooth 38 that connects middle section 28, the straight line L2 of middle tooth 36 that connects middle section 28 and the straight line L3 that connects tooth root in fact, and more described straight line L1 and L2 are positioned at rear side more (near a side of the front-end edge of lid front side wall 22).That is, straight line L4 is between straight line L2 and straight line L3.In addition, only express 4 sidepiece teeth in the lateral region of Fig. 6, but in fact sidepiece tooth 31,32 is set to alternately till the end that cuts off sword 24.In addition, this cuts off in the sword 24, and zone, the other side 30 also has the formation of identical tooth symmetrically.

In the cut-out sword 24 of present embodiment,

sidepiece tooth

31,32 crown angle separately be with canine tooth 38 and in the equal crown angle of tooth 36.In addition,

sidepiece tooth

31,32 shape separately can be simple equicrural triangle, but with canine tooth 38 and middle tooth 36 in the same manner, being preferably formed to hypotenuse becomes the recessed to the inside circular-arc fan shape or the shape of ginkgo leaf.Its reason is, can improve durability when the crown angle is remained acute angle.In addition, when being made as described shape, compare, in identical length range, can reduce the radical of tooth, thereby help to alleviate the required power of cutting off with equicrural triangle.

As shown in Figure 6, if use the cut-out sword 24 that possesses the present embodiment of two kinds of sidepiece teeth of size (sidepiece tooth 31,32) that tooth depth differs from one another in lateral region, then from " puncturing " step transition to " incision " during the stage and carry out " incision " during the stage, because the radical of the sidepiece tooth that contact with preservative film 14 simultaneously can reduce, so can further reduce from puncturing step transition to required power of incision stage and carry out required power of incision stage.

The tooth depth H3 of sidepiece 1 tooth 31 of lateral region 30 is preferably 0.3～2.5mm, more preferably 0.5～2.0mm.In addition, the tooth depth H2 of sidepiece 2 teeth 32 is preferably 1.0～3.0mm, more preferably 1.2～2.5mm.The space of tooth of sidepiece 1 tooth 31 and sidepiece 2 teeth 32 is preferably 1.0～3.0mm, more preferably 1.5～2.5mm.

Fig. 7 is the lateral region of a side of cut-out sword of another embodiment of the invention and the partial enlarged drawing of end regions.The cut-out sword 24 of Fig. 7 has in middle section and lateral region and described embodiment, the i.e. formation of identical tooth with Fig. 6.Yet the cut-out sword 24 of present embodiment is to possess the end regions 29 with end tooth 40 in the outside of lateral region 30 (opposition side of middle section side) with the difference of the cut-out sword of described embodiment.In addition, the cut-out sword 24 of present embodiment also has the formation of the tooth identical with Fig. 7 in zone, the other end.

The end tooth 40 that is possessed in the end regions 29 of the cut-out sword 24 of present embodiment has sidepiece 1 tooth 31 that is higher than in the lateral region 30 and the tooth depth of sidepiece 2 teeth 32.The straight line L5 that connects the crown of end tooth 40 is between the straight line L2 of the straight line L1 of the canine tooth that connects middle section and the middle tooth that is connected middle section.So, by possessing the end tooth 40 that tooth depth is higher than the sidepiece tooth in the lateral region, even, also can easily preservative film be cut off beginning to cut off under the situation of preservative film from an end that cuts off sword 24.That is, no matter still begin to cut off preservative film, all can easily preservative film be cut off, and the feel when cutting off is also good from the end that cuts off sword from the apex of cutting off sword.

The tooth depth H4 of end tooth 40 is preferably 0.8～3.5mm, more preferably 0.9～2.0mm, more preferably 1.0～1.5mm.In addition, the space of tooth of end tooth 40 is preferably 0.5～3.5mm, more preferably 0.7～2.5mm.

In addition, in said embodiment, only dispose the end tooth 40 of identical tooth depth in the end regions 29, but also can with lateral region 30 in the same manner, the different end tooth of tooth depth for example alternately is set.In addition, tooth depth also can be set and be higher than the end tooth of sidepiece tooth and the end tooth that tooth depth is lower than the sidepiece tooth in end regions 29.

In described each embodiment, form by polyvinylidene chloride as the preservative film of tubular packing material, even but, also can use the present invention for the preservative film that forms by other resin.At this moment, tooth depth, space of tooth, crown angle etc. can suitably be changed according to described size.In addition, the tubular packing material not only can be preservative film, also can be aluminium film or paper.

In addition, constitute the radical of the tooth of middle section, can or also can be less than described each embodiment, must constitute with two stages and toe joint and touch but condition is a preservative film more than described each embodiment.In addition, in described each embodiment, be arranged in the crown direction of the leading section of the leading section of all canine tooths of middle section and all teeth, with outstanding towards the mode of front wall of container body, even but the crown direction of leading section of canine tooth of apex that only is disposed at the V word also can obtain effect of the present invention with towards the outstanding cut-out sword of the mode of front wall of container body.In addition, not only be arranged in the canine tooth of middle section and the leading section of tooth, and be arranged in the sidepiece tooth of lateral region and be positioned at end regions end tooth leading section the crown direction also can with the leading section of the canine tooth of middle section and tooth similarly, with outstanding towards the mode of front wall of container body.

Embodiment

Below, based on embodiment, comparative example and reference example, the present invention is carried out more specific description, but the present invention is not subjected to any qualification of following examples.

(embodiment 1)

Use commercially available pet resin sheet material (twin shaft extends (crystallinity), thickness is 250 μ m) to make the cut-out sword of V word shape.As shown in Figure 6, this cut-out cutlery is equipped with middle section 28 and is adjacent to be arranged at the lateral region 30 in two outsides of this middle section.Particularly, in middle section 28, have 38,8 middle teeth 36 of 5 canine tooths and 2 little teeth 35, in lateral region 30, have 31,38 sidepiece 2 teeth 32 of 37 sidepieces, 1 tooth.In addition, the tooth depth of canine tooth 38 is 1.7mm, and the tooth depth of middle tooth 36 is 1.2mm, and the tooth depth of little tooth 35 is 0.8mm, and the tooth depth of sidepiece 1 tooth 31 is 0.8mm, and the tooth depth of sidepiece 2 teeth 32 is 1.2mm.

In addition, be arranged in the canine tooth 38 and the tooth 36 of the middle section 28 of this cut-out sword, as shown in Figure 3, the mode bending of leading section 3 separately to give prominence to towards the thickness direction that cuts off sword.Canine tooth 38 and middle tooth 36 length C of leading section 3 on the direction that is parallel to interarea 24a separately are 0.30mm, and the maximum projecting height B of leading section 3 is 0.08mm.In addition, in the cross section of cut-out sword 24 shown in Figure 3, canine tooth 38 and middle tooth 36 leading section 3 separately is 15 ° with main part 5 angulation θ.

Such cut-out sword is bonded on the employed packing container of registered trade mark (RTM) " NEW kure wrap " being made, sold by the KUREHA of Company Limited by Shares (length is about 31cm, width and is 4.5cm, highly is the container of the blank paperboard system of the grey end of 4.5cm), and making has the packing container of the preservative film of polyvinylidene chloride system as shown in Figure 1.The canine tooth 38 that is arranged in the middle section 28 that cuts off sword reaches the opposition side bending of the crown of tooth 36 towards the front side wall 22 of lid, perpendicular to interarea 24a and comprise canine tooth 38 or the elevation profile of the crown of middle tooth 36 in, front side wall 22 angulations of the crown direction of canine tooth 38 or middle tooth 36 and lid are 15 °.In addition, under the state of close cap, the crown direction and the front wall of container body angulation γ (Fig. 4) of the canine tooth of cut-out sword and the leading section 3 of middle tooth are 15 °.

(embodiment 2,3)

Make the cut-out sword of the shape (identical cross sectional shape) identical, and make packing container in the same manner with embodiment 1 with embodiment 1.

(comparative example 1,2)

Use commercially available pet resin sheet material (twin shaft extends (crystallinity), thickness is 250 μ m) to make the cut-out sword of V word shape.This cuts off cutlery and is equipped with as shown in Figure 6 middle section 28, and and the adjacent lateral region 30 in two outsides of middle section.Particularly, in middle section 28, have 38,8 middle teeth 36 of 5 canine tooths, reach 2 little teeth 35, in lateral region 30, have 37 sidepieces, 1 tooth 31, reach 38 sidepiece 2 teeth 32.In addition, the tooth depth of canine tooth 38 is 1.7mm, and the tooth depth of middle tooth 36 is 1.2mm, and the tooth depth of little tooth 35 is 0.8mm, and the tooth depth of sidepiece 1 tooth 31 is 0.8mm, and the tooth depth of sidepiece 2 teeth 32 is 1.2mm.

In addition, these cut off the cross sectional shape of sword and cut-out sword in the past is all tabular, and the crown of each tooth is not all towards the thickness direction bending of cutting off sword.

This cut-out sword is bonded in respectively on the employed packing container in the registered trade mark (RTM) " NEW kure wrap " of making, selling (length is about 31cm, width and is 4.5cm, highly is the container of the blank paperboard system of the grey end of 4.5cm), and making has packing container by the preservative film of polyvinylidene chloride system as shown in Figure 1 respectively by the KUREHA of Company Limited by Shares.Under the state of close cap, the crown direction and the front wall of container body angulation γ (Fig. 4) of the canine tooth of cut-out sword and the leading section 3 of middle tooth are 0 °.

＜cuttability test 1 〉

The embodiment 1～3 that makes in the above described manner, the packing container that reaches comparative example 1,2 are placed on the stretching testing machine, implement following extension test, that is, the preservative film of the polyvinylidene chloride system that will extract out from this packing container stretches and cuts off with the fixed angle that becomes 60 ° with the lid front side wall.Obtain cut-out power (g) according to initial detected peak value in this extension test.

[table 1]

＜cuttability test 2 〉

Use the packing container of making in embodiment 1 and the comparative example 1, preservative film is cut off, the cut-out shape of the preservative film after visual observation is cut off with usual way.Fig. 8 (a) is the figure that schematically represents the cut-out shape of the preservative film that cut off by the packing container of embodiment 1.Fig. 8 (b) is the figure that schematically represents the cut-out shape of the preservative film that cut off by the packing container of comparative example 1.

The cut-out shape of the preservative film that is cut off by the packing container of embodiment 1 has and the identical shape of cut-out sword.Therefore, the packing container of embodiment 1 has very good sharpness.

On the other hand, the cut-out shape of the preservative film that is cut off by the packing container of comparative example 1 is different with the shape of cut-out sword.According to the cut-out shape of Fig. 8 (b) as can be known, preservative film elongation when cutting off.Shown in this disrumpent feelings shape, the cuttability of the packing container of comparative example 1 is not good enough.

＜durability test 〉

Use the packing container of embodiment 1 and comparative example 1 to carry out durability test.Particularly, described cuttability test 1 repeated 300 times after, in the same manner cut-out power is measured with described cuttability test 1.Mensuration is repeated 5 times and obtain aviation value.Measurement result is shown in the table 2.

[table 2]

According to the result of durability test as can be known, embodiment 1 compares with comparative example 1 has more favorable durability.

Industrial applicibility

Claims

1. a packing container is with cutting off sword, the cut-out sword of the metal V word of right and wrong shape, and the back side that it is installed on the front side wall in the lid of the packing container of accommodating the tubular packing material is used to cut off described tubular packing material, it is characterized in that:

Described cut-out cutlery contains the middle section and the lateral region that is disposed at the both sides of described middle section of the apex of V word fully,

Described middle section has:

Identical many first teeth of the tooth depth of each tooth and tooth depth are lower and tooth depth each tooth is identical manys second tooth than described first tooth,

A tooth in described first tooth is disposed at described apex, and other tooth in described first tooth is the arranged spaced of center with regulation with first tooth of described apex,

Described second tooth is disposed at described first between cog,

Second straight line that connects the crown of described second tooth, between the 3rd straight line of first straight line of the crown that connects described first tooth and the tooth root that is connected described first tooth and described second tooth,

Be installed at this cut-out sword under the state of assigned position of described packing container, the leading section of first tooth that is disposed at described apex is towards the opposition side bending of the front side wall of described lid,

Described lateral region has many sidepiece teeth, and the crown of described sidepiece tooth is on described second straight line or between described second straight line and described the 3rd straight line.

2. packing container as claimed in claim 1 is used and is cut off sword, it is characterized in that,

Be installed at this cut-out sword under the state of assigned position of described packing container, be disposed at of the opposition side bending of the leading section of the leading section of described first tooth of described middle section and described second tooth towards the front side wall of described lid.

3. packing container as claimed in claim 2 is used and is cut off sword, it is characterized in that,

Be installed at this cut-out sword under the state of assigned position of described packing container, the face of this cut-out sword of the side of joining perpendicular to the back side with described front side wall and comprise the crown of leading section of described first tooth or the elevation profile of the crown of the leading section of described second tooth in, the crown direction of described leading section becomes the angle θ of regulation with respect to the front side wall of described lid

Described angle θ is 10 °～40 °.

4. as claim 2 or 3 described packing containers cut-out sword, it is characterized in that,

Be installed at this cut-out sword under the state of assigned position of described packing container, perpendicular to described of this cut-out sword and comprise the crown of leading section of described first tooth or the elevation profile of the crown of the leading section of described second tooth in, be 1.2～7 in the length that is parallel to the described leading section on described the direction of this cut-out sword with respect to the ratio of the projecting height of described leading section.

5. it is characterized in that with cutting off sword as each described packing container in the claim 1 to 4:

Described lateral region has different two kinds of sidepiece teeth of size of tooth depth of alternate configurations.

6. it is characterized in that with cutting off sword as each described packing container in the claim 1 to 5,

The leading section of described sidepiece tooth is towards the opposition side bending of the front side wall of described lid.

7. it is characterized in that with cutting off sword as each described packing container in the claim 1 to 6,

Also possess end regions on the end of the described cut-out sword in the outside of described lateral region, this end regions has the end tooth of tooth depth than the described sidepiece tooth depth of described lateral region.

8. it is characterized in that with cutting off sword as each described packing container in the claim 1 to 7,

The hypotenuse of at least one in described first tooth, described second tooth and the described sidepiece tooth becomes recessed to the inside circular-arc.

9. packing container as claimed in claim 7 is with cutting off sword, wherein

The hypotenuse of at least one in described first tooth, described second tooth, described sidepiece tooth and the described end tooth becomes recessed to the inside circular-arc.

10. packing container, it possesses: container body, it accommodates the tubular packing material; Lid, its mode and described container body with the part that covers described front wall of container body is wholely set; And as each described cut-out sword in the claim 1 to 9, it is installed on the back side of the front side wall of described lid.