CN101254874B

CN101254874B - Packing film device with fins

Info

Publication number: CN101254874B
Application number: CN2008100825189A
Authority: CN
Inventors: 梅津正; 秀冈诚
Original assignee: Kureha Corp
Current assignee: Kureha Corp
Priority date: 2007-02-27
Filing date: 2008-02-27
Publication date: 2013-06-19
Anticipated expiration: 2028-02-27
Also published as: JP2008239250A; CN101254872A; TW200844009A; CN101254874A; KR20080079610A; CN101254872B; HK1125086A1

Abstract

The invention provides an improved package film device capable of eliminating 'edge friction' which is caused by the press of a cutting edge on a package film pulled from a container and damages the package film, and of preventing the packaging film from rolling upwards and withdrawing. In the package film device, a cover body is provided with an upper wall (21), a cover front wall (24) and a cutting edge (22) fixedly connected to the cover front wall, the point of the cutting edge is configured such that the point is adjacent to the lower outer surface of a box front wall when the opening of the cover body is closed, a wing (50) with a wing connection part (55) connected to a sub front wall is formed by cutting a part of the box front wall (121), an adhesive layer (14) is arranged on at least a part of the outer surface of the wing (50).

Description

Packing film device with fin

Technical field

The packaging film that the present invention relates to use in the packing of food and other article furls the packing film device that is contained in container, can easily packaging film be pulled out outside container.More particularly, the invention provides and cutting blade contact can not occur on the packaging film of pulling out from container and with the packing film device of the phenomenon that is called " blade is wiped and touched " of packaging film damage.The invention provides for left hand smoothly the people and the right hand people both sides smoothly improvement that can not produce the inconvenience in use packing film device.In addition, the present invention relates to possess to make packaging film and ora terminalis (cut-out edge) thereof to leave, make it possible to pinch the ora terminalis of packaging film and the packing film device of fin that packaging film is pulled out with finger outside container from the wall of container face.And then, the invention provides prevent the packaging film that is drawn out ora terminalis by the packing film device that retracts on volume.

Background technology

In the past, the known packaging film that the packing that will be used for food or other article arranged furled the packing film device that is contained in container, pulls out, can use by being located at the cutting blade cut-out on container by will be the both quantitative packaging film of staff outside container when the use of packaging film.Patent documentation 1 discloses the film for packaging container of the container cap 12 on the rear surface section apical margin that possesses the container body 11 of taking in the web-like packaging film and be rotatably connected to container body.The film for packaging container of patent documentation 1 possesses protrusion tab 15 and strippable lining cement (ストッパ one ニス) 19 on the front surface wall portion of container.

[patent documentation 1] TOHKEMY 2005-178901 communique

In packing film device in the past, packaging film is furled be contained in container, with staff, packaging film is pulled out set length outside container when the use of packaging film, cut off and can use by the cutting blade that is located on container.When packaging film volume is pulled out outside container, have cutting blade be crushed on the packaging film of pulling out from container, with the packaging film damage of pulling out so-called " blade is wiped and is touched,, problem.That is, due to occuring, " blade is wiped and touched " produce the undesirable condition that packaging film part that packaging film is cut off, pulled out from container is rolled up to rollback.The 1st purpose of the present invention is to provide a kind of packing film device of eliminating " blade is wiped and touched ".

In addition, in packing film device in the past, if packaging film and cut off the edge and be attached on container outer wall is difficult to pinch by staff the cut-out edge of packaging film, in order to address this problem, equipped the fin that the part at the cut-out edge that is used for making packaging film is left from container outer wall.But, have be not for the right hand smoothly the people and left hand people both sides smoothly all easily the structure shortcoming.Namely, fin in the past is in order conveniently to be configured to right hand people smoothly, fin is positioned at the length direction central authorities position far away of container with respect to the user, when pulling out so that pinch packaging film holding container with left hand with smoothly the right hand, the wider part of the packaging film that is drawn out is in and grips between part and user.If configuration like this, leftward in smoothly people's situation, fin is in the position nearer with respect to the user, has produced the use hard problem.

Thereby another object of the present invention is to provide and a kind ofly is used for eliminating above-mentioned left hand people's smoothly inconvenience and also can produce the packing film device that uses difficulty, has the fin of having improved to right hand people smoothly.And then, the purpose of this invention is to provide and a kind of lining cement is configured on the fin outside face so that the ora terminalis of the packaging film that is drawn out can not be pulled back to the packing film device on volume.Other purposes of the present invention and advantage can become clear in claims, accompanying drawing and the following description.

Summary of the invention

Packing film device of the present invention can furl packaging film and is contained in container and packaging film can be pulled out outside container.Container comprises box main body and lid.The opening that box main body has case antetheca, rear wall, diapire, opposed two case end walls, surrounded by case antetheca, rear wall and opposed two case end wall tops, be attached on case antetheca top and the secondary antetheca that roughly extends downwards along the case antetheca in box main body inside and make packaging film and cut off the fin that the edge leaves from the case antetheca.Lid has upper wall, lid antetheca, is fixed in the cutting blade that covers on antetheca, and upper wall is attached on the rear wall top, and the blade tip of cutting blade is configured to, when lid is closed opening this blade tip and case antetheca below outside face adjacent.Fin is that the mode with the fin connecting part that links with secondary antetheca has cut the part of case antetheca and form.Prevent that bond layer that the packaging film that is drawn out returns on the volume is configured on the outside face of the outside face of case antetheca or fin.If establish upper wall width, be to be of a size of A between rear wall top and lid antetheca top, upper wall is R from the angle of rotation of horizontal direction rotation, be of a size of S from lid antetheca top to the blade tip top, the width of opening, be to be of a size of B between rear wall top and case antetheca top, upperlimit between fin connecting part and fin lower edge is H, fin is X from the angle of rotation of vertical direction rotation, takes off respectively formula (1) when reaching certain value in the scope of (2) as angle of rotation R, X

0<R<45°……（1）

0<X<45°……（2）

Satisfy in the whole zone of fin lower edge

S×cosR=A×sinR+H×cosX……（3）

H×sinX≤（A×cosR+S×sinR）－B……（4）。

Although the shape of the blade tip of cutting blade can be also linear, preferably has the V font at outstanding top downwards.

In packing film device of the present invention, fin is that the part of case antetheca has been cut and formed in the mode that stays the connecting part that links with secondary antetheca, and the lower edge of fin rotates with respect to the case antetheca under the effect of the elastic force that the connecting part by fin and secondary antetheca produces.By fin being configured to comprise the bisector of the distance between opposed two case end walls, people and left hand people both sides smoothly smoothly can be with a kind of commodity correspondence for the right hand.In addition, be suitable for respectively right hand people smoothly and left hand people's smoothly commodity by fin being staggered to a side or the opposing party from the position of the bisector that comprises the distance between the case end wall, can making.In the present invention, " front " substantially refer to be accommodated in volume in box main body be benchmark close to a side of cutting blade, " afterwards " refers to its opposition side.In addition, " on " volume that substantially refers to be accommodated in box main body is that benchmark is close to a side of opening.

Packing film device of the present invention preferably possesses following structure.namely, if establish the width of upper wall (21), be to be of a size of A between rear wall top (16) and lid antetheca top (242), upper wall (21) is R from the angle of rotation of horizontal direction rotation, be of a size of S from lid antetheca top (242) to blade tip top (221), the width of opening (15), be to be of a size of B between rear wall top (16) and fin connecting part (55), upperlimit between fin connecting part (55) and fin lower edge (51) is H, fin (50) is X from the angle of rotation of vertical direction rotation, as angle of rotation R, when X takes off respectively certain value in the scope of formula (1) and (2)

0＜R＜45°......(1)

0＜X＜45°......(2)

In the whole zone of fin lower edge, size A, B, S, H satisfy

S×cosR＝A×sinR+H×cosX......(3)

H×sinX≤(A×cosR+S×sinR)-B......(4)。

By such setting size A, B, S, H, can prevent above-mentioned " blade is wiped and touched ".Formula (4) comprises the situation of following formula (4a) and formula (4b).

H×sinX＜(A×cosR+S×sinR)-B......(4a)

H×sinX＝(A×cosR+S×sinR)-B......(4b)

In the situation that formula (4a), the blade tip 223 of cutting blade can not contact on the fin lower edge, the packaging film on the fin lower edge can not cut off.In the situation that formula (4b), the blade tip 223 of cutting blade contacts on the fin lower edge, but does not press packaging film, so soft packaging film just is out of shape littlely, can not be cut off.

In packing film device of the present invention, if the upperlimit of establishing the length of the connecting part (55) of above-mentioned fin and being between W, fin connecting part (55) and fin lower edge (51) is H, ratio W/H is 0.5～10, is preferably 1～6, more preferably 2～5.Packing film device of the present invention can possess following structure.(1) case antetheca and secondary antetheca be with the ground paper of one in the kink bending and form, case antetheca top is formed by kink, above-mentioned fin connecting part is the part of kink.(2) top of the V font of cutting blade is positioned near the bisector of the distance between opposed two lid end walls (or case end wall).(3) the linearly or curve-like of above-mentioned fin lower edge, preferably have concave shaped portion.(4) make above-mentioned fin from the recuperability generation by above-mentioned kink of the power of case antetheca rotation.(5) above-mentioned bond layer is configured on the outside face of the outside face of case antetheca or above-mentioned fin.(6) comprise the blade tip that covers cutting blade and strippingly be fixed in sealing wall on the case antetheca.(7) the sealing wall is formed by the extension of lid antetheca, and the connecting portion by easy fracture is connected to and covers on antetheca.Easily the connecting portion of fracture is for example sewing thread.(8) when the sealing wall was peeled off from the case antetheca, the blade tip of cutting blade exposed.Connecting portion forms from the blade tip of cutting blade and leaves both V fonts of sizing.(9) the sealing wall is bonded on the case antetheca by a plurality of adhesive portion, the Area Ratio that is near the locational adhesive portion at the top of the V font of cutting blade is in away from the area of the locational adhesive portion at top little.

Description of drawings

Fig. 1 is the approximate three-dimensional map before the use of the packing film device of one embodiment of the present of invention begins.

Fig. 2 A is that approximate three-dimensional map, Fig. 2 B of the packing film device of the state after the sealing wall 23 of the packing film device of Fig. 1 is removed is the elevation drawing of sealing wall 23.

Fig. 3 means that the lid of the packing film device of Fig. 2 A is in the approximate three-dimensional map of the state of release position.

Fig. 4 is the summary three-dimensional cutaway view of state that packaging film is pulled out from the packing film device of Fig. 3 by staff.

Fig. 5 is the approximate three-dimensional map with the case antetheca of the packing film device of Fig. 2 A and secondary antetheca expansion expression.

Fig. 6 means the approximate vertical view of the tab portion of packing film device of the present invention.

Fig. 7 is the approximate three-dimensional map of the tab portion of Fig. 6.

Fig. 8 is packing film device, the general profile chart that cut open along bisector 2 of Fig. 2 A after lid moves to the release position a little.

Fig. 9 means that the lid with the same packing film device of Fig. 3 is in the approximate three-dimensional map of the state of release position, is the locational figure that fin is configured in the bisector that does not comprise two distances between the case end wall.

Figure 10 is that to make the lower edge of fin be the approximate vertical view of the tab portion of U font.

The specific embodiment

Illustrate referring to the drawings embodiments of the present invention.In the accompanying drawings, give identical mark and omit repeat specification for same parts.Fig. 1 is the approximate three-dimensional map of the use of the packing film device of one embodiment of the present of invention before beginning, and Fig. 2 A is that approximate three-dimensional map, Fig. 2 B of the packing film device of the state after the sealing wall 23 of the packing film device of Fig. 1 is pulled down is the elevation drawing of the sealing wall 23 pulled down from case antetheca 121.Fig. 3 means that the lid of the packing film device of Fig. 2 A is in the approximate three-dimensional map of the state of release position.Fig. 2 A represents sealing wall 23 is bonded in circular adhesive portion 132,134 on case antetheca 121, and has omitted circular adhesive portion 132,134 in the antetheca 121 of Fig. 3.

Fig. 4 is that Fig. 5 launches the case antetheca 121 of the packing film device of Fig. 2 A, secondary antetheca 125 etc. the approximate three-dimensional map of expression by the summary three-dimensional cutaway view of

staff

61,62 states of packaging film being pulled out from the container 10 of the packing film device of Fig. 3.To shown in Figure 5, packing film device 1 is the structure that the volume 30 with packaging film 36 is accommodated in container 10, packaging film 36 can be pulled out outside container as Fig. 1.Container 10 comprises box main body 12 and lid 20.Fig. 4 represents to hold container 10 and pinch with the right hand 62 state that packaging film is pulled out with left hand 61.Fin 50 is configured on the position of bisector of the distance that comprises 123 of opposed two case end walls.

Box main body 12 has case antetheca 121, rear wall 122, diapire 124 and opposed two case end walls 123 and is opened 15 by what the top of case antetheca 121, rear wall 122 and opposed two case end walls 123 surrounded.And then box main body 12 possesses the secondary antetheca 125 that is connected on case antetheca top 17 and roughly extends along case antetheca 121 downwards in box main body inside, prevent the bond layer 14 (with reference to Fig. 3) that the packaging film 36 that is drawn out returns on the volume 30 and make packaging film and cut off the fin 50 that edge 361 leaves from case antetheca 121.As shown in Figure 5, lid 20 possesses two corresponding lid end walls 25.In addition, case antetheca 121 possesses the Fixed Division 136 that can be fixed on case end wall 123.

Lid 20 has upper wall 21, lid antetheca 24 and is fixed in the cutting blade 22 that covers on antetheca.Upper wall 21 is attached on rear wall top 16.Cutting blade 22 is configured to, lid 20 with box main body open 15 when closing adjacent to case antetheca 121 below outside face, and be the V font with outstanding top 221 downwards.The top 221 of the V font of cutting blade is near the bisector 2 of the distance of opposed two lids between

end walls

25,25.

Fig. 4 represents to hold container 10 and pinch with the right hand 62 state that packaging film 36 is pulled out with left hand 61.Fin 50 is configured on the position of the bisector that comprises the distance between opposed two case end walls 123.Therefore, close to the size (width) of the packaging film between user's case end wall 123 and fin 50 (packaging film grip position) and from the user away from case end wall 123 and the packaging film size between fin about equally.If fin 50 is configured on the position of bisector of the distance that comprises 123 of opposed two case end walls, in the situation that make hand opposite with Fig. 4, namely in the situation that hold container 10 and pinch packaging film 36 with left hand 61 with the right hand 62 and pull out, close to the size (width) of user's case end wall 123 and the packaging film between fin 50 (fetch bit of pinching of packaging film is put) and from the user away from case end wall 123 and the size of the packaging film between fin 50 also about equally, so such use difficult problem can not occur in the past.

Fig. 6 means the general view of the fin 50 of packing film device of the present invention, and Fig. 7 is the approximate three-dimensional map of the fin 50 of Fig. 6.Be used for making packaging film 36 and cut off the fin 50 that leaves from case antetheca 121 at edge 361 as Figure 6 and Figure 7, the part of case antetheca 121 being formed cutting with the mode of the connecting part 55 of secondary antetheca 125 to stay.The lower edge 51 of fin 50 leaves from case antetheca 121 under the effect of the elastic force that is produced by connecting part 55.Fin 50 is configured to, and comprises the bisector 2 of the distance between opposed two case end walls 123.In addition, in the shape of fin 50, lower edge 51 can be linearity or curve-like.Particularly, the shape of fin 50 can be also rectangle (square, oblong) or take fin connecting part 55 and lower edge 51 as upper base or go to the bottom trapezoidal.And then the central portion of lower edge 51 also can be spill 52.Spill 52 can be made the V font as shown in Figure 6.And spill 52 can be made the U font as shown in Figure 10.In the case, the packaging film that is positioned on spill 52 falls into slightly from finned surface, thereby produces the effect of " blade is wiped and touched " at the top 221 of the V font alleviate cutting blade.In addition, pinching when getting film, because be spill, so have the effect that film is easily pinched.Recess 52 can have the otch of U font or V font.In Fig. 6 and Figure 10, the ratio W/H of the maximum height H of the length W of the connecting part of fin 50 and fin (upperlimit between fin connecting part 55 and fin lower edge 51) is 0.5～1.0, is preferably 1～6, more preferably 2～5.In the situation that the length W of fin connecting part is that the maximum height H of fin is namely perpendicular to more than 2 times of the size on the direction of connecting part, larger to the elastic force that fin applies by connecting part, the lower edge that can prevent fin is attached on case antetheca 121 or the undesirable condition such as can not leaves fully and occurs.

Be fastened on packaging film part in spill 52 close to case antetheca 121, the problem of damaging so can avoid being pressed by the top 221 of the V font cutting blade 22 that rotates in its outside.Prevent that the packaging film 36 that is drawn out is configured on the outside face of fin 50 to rolling up the bond layer 14 that returns on 30.Leaving from case antetheca 121 outside faces below of the outside face of fin 50, be in the position of easy contact on the cut-out edge of packaging film 36, so the bond layer on the outside face of fin 50 can be bonding and keep reliably with the cut-out edge of the packaging film 36 that is drawn out.

As shown in Fig. 1, Fig. 2 A and Fig. 2 B, packing film device 1 has the blade tip that covers cutting blade 22 and strippingly is fixed in sealing wall 23 on case antetheca 121.Sealing wall 23 is formed by the extension of lid antetheca 24, and the connecting portion 241 by easy fracture is connected to and covers on antetheca 24.Connecting portion 241 forms from blade tip 223 and leaves both V fonts of sizing, so that the blade tip 223 of cutting blade 22 exposes when sealing wall 23 is peeled off from case antetheca 121.In addition, as shown in Fig. 2 A and Fig. 2 B, sealing wall 23 is bonded on case antetheca 121 by a plurality of adhesive portion 132,134.A plurality of adhesive portion are rounded respectively, in adjacent circular, in the heart distance equates, and can make the area that is near the adhesive portion 134 of the position at the top 221 of the V font of cutting blade 22, less than the area that is in away from the adhesive portion 132 of the position at top 221.

Fig. 8 is after lid 20 moves to the release position a little, comprise the general profile chart of bisector 2 of the packing film device of Fig. 2 A.As shown in Figure 8, if lid 20 to the direction that the opening 15 of box main body 12 is opened around rear wall top 16 anglec of rotation R, the vertical direction size S of the top 242 of the top 221 distance lid antethecas 24 of the V font of cutting blade 22 is larger, and the distance of leaving from the packaging film 36 that is drawn out is larger.By making size S larger, " blade is wiped and touched " phenomenon that the packaging film 36 that is drawn out was pressed and cut off at the top 221 of the V font of cutting blade 22 has the trend of minimizing.

But if in order to reduce " blade wipe touch " and increased in size S, near the vertical dimension T the line 2 of the sealing wall 23 shown in Fig. 2 B diminish.Sealing wall 23 need to stash blade tip 223, do not break again simultaneously from case antetheca 121 sur-face peelings, in addition, before packing film device uses, require to be bonded in reliably case antetheca 121 surfaces upper, the blade tip 223 of cutting blade is covered.Therefore, near the vertical dimension T the bisector 2 of sealing wall 23 need to be for more than certain value, more than for example 10mm.In the present invention, as shown in Figure 2, can make the adhesive portion 134 that is near the position at the top 221 of the V font of cutting blade 22,134 Area Ratio be in the area of adhesive portion 132 of the position far away apart from top 221 little.

In Fig. 8, the condition that " blade wipe touch " do not occur is, on above-below direction during position consistency, fin 50 is not pressed at top 221 when the top 221 of the V of cutting blade 22 font and fin lower edge 51.in addition, in packing film device of the present invention, if establish the width of upper wall 21, be to be of a size of A between rear wall top 16 and lid antetheca top 242, upper wall 21 is R from the angle of rotation of horizontal direction rotation, be of a size of S from lid antetheca top 242 to the top 221 of blade tip, the width of opening 15, be to be of a size of B between rear wall top 16 and fin connecting part 55, upperlimit between fin connecting part 55 and fin lower edge 51 is H, fin 50 is X from the angle of rotation of vertical direction rotation, as angle of rotation R, when X takes off respectively certain value in the scope of formula (1) and (2),

0＜R＜45°......(1)

0＜X＜45°......(2)

Select size A, B, S, H, so that satisfy in the whole zone of fin lower edge

S×cosR＝A×sinR+H×cosX......(3)

H×sinX≤(A?×cosR+S×sinR)-B......(4)。

As an example, in the time of X=4 °, the angle that the top 221 of the V font of cutting blade and the upperlimit of fin lower edge partly contact is R=9 ° when A=43mm, B=43mm, S=27mm, H=20mm.At this moment, according to calculating formula as can be known, H * sinX=3.10mm, (A * cosR+S * sinR)-B=3.70mm satisfies the relation of following formula.Thus, can prevent above-mentioned " blade is wiped and touched " of packing film device.

Above-mentioned formula (4) comprises H * sinX=(situation of A * cosR+S * sinR)-B...... (4b), but in the case, the blade tip 223 of cutting blade just contact on the fin lower edge and do not press packaging film, so soft packaging film can not be cut off (damage).That is, can not cause in fact " blade is wiped and touched ".In packing film device of the present invention, the fin preferred disposition is to comprise the bisector of the distance between opposed two case end walls.Therefore, close to the size (width) of the packaging film between user's case end wall and fin (packaging film grip position) and from the user away from the case end wall and the packaging film size between fin about equally.Therefore, eliminated in the situation that fin is set from the position that above-mentioned bisector is left, to right hand people or the inconvenience that produces of left hand people's smoothly a certain class people smoothly, can provide concerning the right hand smoothly the people and left hand people both sides smoothly easy-to-use packing film devices all.

In packing film device of the present invention, the lower edge of fin has concave shaped portion.By taking such structure, can not provide to occur " blade is wiped and touched ", being that packaging film is pressed near the top of V font cutting blade and made the packing film device of the cut undesirable condition of packaging film.In packing film device of the present invention, prevent that the packaging film that is drawn out is configured on the outside face of fin 50 to rolling up the bond layer that returns.The following outside face from the case antetheca of the outside face of fin leaves, be on the position at easy contact packing film and cut-out edge (ora terminalis) thereof, so the bond layer on the outside face of fin is brought into play the effect of the ora terminalis of bonding packaging film with keeping being drawn out more reliably.

Fig. 9 is the variation of the packing film device of Fig. 3, means that the lid of packing film device is in the approximate three-dimensional map of the state of release position.In the packing film device of Fig. 9, fin 50 is configured on the position of the bisector that does not comprise two distances between the case end wall.In Fig. 9, be used for preventing being configured on the outside face of fin 50 to volume 30 bond layers that return 14 from the end of rolling up 30 packaging films of pulling out 36, also be configured on case antetheca 121.

In packing film device of the present invention, the sealing wall is formed by the extension of lid antetheca and the connecting portion by easy fracture is connected to and covers on antetheca.Connecting portion has from the blade tip of cutting blade and leaves both V fonts of sizing, so that the blade tip of cutting blade exposes when the sealing wall is peeled off from the case antetheca.The sealing wall is bonded on the case antetheca by a plurality of adhesive portion, is in Area Ratio near the adhesive portion of the position at the top of the V font of cutting blade and is in away from the area of the adhesive portion of the position at top little.Therefore, the sealing wall energy is enough hides blade tip, and can be peeled off from the case front wall surfaces with not rupturing, in addition, has advantages of before packing film device uses to be bonded in reliably the blade tip that covers cutting blade on the case front wall surfaces.

In the present invention, be spill near the central portion of the lower edge of fin, the length W of the connecting part of fin and the ratio W/H of the maximum height H of fin are (Fig. 6, Figure 10) more than 2.Namely, the size W of the connecting part of fin is the maximum height H of fin, namely perpendicular to more than 2 times of the size on the direction of connecting part, thereby larger to the elastic force that fin applies by connecting part, can prevent that the lower edge of fin is attached on case antetheca 121 or the undesirable condition that can not leave fully.In addition, the packaging film part that is fastened on the concave portions of fin is located close to the case antetheca, and press and the problem damaged at the top of having avoided being subjected to the V font cutting blade that rotates in its outside.

In the embodiment of Fig. 3 of the present invention, Fig. 5, Fig. 6, on the bisector that is centered close to the distance between opposed case end wall 123,123 of the spill of the top 221 of the V font of cutting blade 22 and the lower edge 51 of fin, thus, the top 221 of V font is left from the lower edge 51 of fin, thus, the packaging film on the lower edge 51 of fin can not pressed in the top 221 of cutting blade.But, being centered close on the straight line parallel with bisector 22 ' (Figure 10) of the spill of the top 221 of the V font by making cutting blade 22 and the lower edge 51 of fin, rather than be positioned on bisector 2, also can make the top 221 of cutting blade can not press packaging film on the lower edge 51 of fin.

Claims

1. a packing film device, be packaging film can be rolled up (30) to be accommodated in container (10) and the packing film device that packaging film can be pulled out outside container, it is characterized in that,

Container comprises box main body (12) and lid (20);

The opening (15) that box main body (12) has case antetheca (121), rear wall (122), diapire (124), opposed two case end walls (123), surrounded by case antetheca top, rear wall top and above-mentioned two case end wall tops, be attached on case antetheca top and the secondary antetheca (125) that extends downwards along the case antetheca in box main body inside and the fin (50) that packaging film ora terminalis (361) is left from the case antetheca;

Lid has upper wall (21), lid antetheca (24) and is fixed in the cutting blade (22) that covers on antetheca, upper wall (21) is attached on rear wall top (16), the blade tip of cutting blade (223) is configured to, when lid is closed opening this blade tip and case antetheca below outside face adjacent;

Above-mentioned fin (50) is that the mode with the fin connecting part (55) that links with secondary antetheca has cut the part of case antetheca (121) and form;

Prevent that bond layer (14) that the packaging film (36) that is drawn out returns on the volume is configured on the outside face of the outside face of case antetheca (121) or above-mentioned fin (50);

if establish the width of upper wall (21), be to be of a size of A between rear wall top (16) and lid antetheca top (242), upper wall (21) is R from the angle of rotation of horizontal direction rotation, be of a size of S from lid antetheca top (242) to blade tip top (221), the width of opening (15), be to be of a size of B between rear wall top (16) and case antetheca top (17), upperlimit between fin connecting part (55) and fin lower edge (51) is H, fin (50) is X from the angle of rotation of vertical direction rotation, as angle of rotation R, when X takes off respectively certain value in the scope of formula (1) and (2)

0＜R＜45°......(1)

0＜X＜45°......(2)

Satisfy in the whole zone of fin lower edge

S×cosR＝A×sinR+H×cosX......(3)

H×sinX≤(A×cosR+S×sinR)-B......(4)。

2. packing film device as claimed in claim 1, is characterized in that, is W if establish the length of the connecting part (55) of above-mentioned fin, and ratio W/H is 0.5～10.

3. packing film device as claimed in claim 1, it is characterized in that, above-mentioned fin (50) is configured to, the bisector (2) that comprises the distance between opposed two case end walls (123,123), the blade tip of above-mentioned cutting blade (223) configure in the adjacent mode of outside face below this blade tip and case antetheca when lid is closed opening and are the V font with outstanding top (221) downwards.

4. packing film device as claimed in claim 3, it is characterized in that, above-mentioned case antetheca (121) and secondary antetheca (125) are made of a ground paper, case antetheca top (17) is the kink of above-mentioned ground paper, fin connecting part (55) is the part of above-mentioned kink, the top (221) of the V font of cutting blade (22) be positioned at the distance between opposed two case end walls (123,123) bisector (2) near.

5. packing film device as claimed in claim 1, is characterized in that, above-mentioned fin (50) possesses linearity or curvilinear lower edge (51).

6. packing film device as described in claim 1 or 4, is characterized in that, the lower edge (51) of above-mentioned fin (50) is spill (52).

7. packing film device as claimed in claim 1, is characterized in that, above-mentioned cutting blade (22) is linearly.

8. packing film device as claimed in claim 4, is characterized in that, above-mentioned fin (50) rotates above-mentioned angle of rotation X from the case antetheca under the effect of the recuperability of above-mentioned kink.

9. packing film device as claimed in claim 1, it is characterized in that, also comprise the blade tip (223) that covers cutting blade and strippingly be fixed in sealing wall (23) on case antetheca (121), sealing wall (23) is formed by the extension of lid antetheca (24), and be connected to by the connecting portion (241) that easily ruptures and cover on antetheca, also be bonded on the case antetheca by a plurality of adhesive portion (132,134), make the blade tip (223) of cutting blade when sealing wall (23) is peeled off from the case antetheca expose.

10. packing film device as claimed in claim 3, it is characterized in that, also comprise the blade tip (223) that covers cutting blade and strippingly be fixed in sealing wall (23) on case antetheca (121), sealing wall (23) is formed by the extension of lid antetheca (24), and be connected to by the connecting portion (241) that easily ruptures and cover on antetheca, also by a plurality of adhesive portion (132, 134) be bonded on the case antetheca, make the blade tip (223) of cutting blade when sealing wall (23) is peeled off from the case antetheca expose, and, the Area Ratio that is in the locational adhesive portion (134) at the top (221) near cutting blade is in away from the area of the locational adhesive portion (132) at top little.

11. packing film device as claimed in claim 2 is characterized in that, above-mentioned W/H is 1～6.

12. packing film device as claimed in claim 11 is characterized in that, above-mentioned W/H is 2～5.