CN101024460A

CN101024460A - Cling film device

Info

Publication number: CN101024460A
Application number: CNA200710084183XA
Authority: CN
Inventors: 梅津正; 秀冈诚
Original assignee: Kureha Corp
Current assignee: Kureha Corp
Priority date: 2006-02-21
Filing date: 2007-02-17
Publication date: 2007-08-29
Anticipated expiration: 2027-02-17
Also published as: CN101024460B; KR20070083409A; TW200806560A; JP4889477B2; TWI388488B; HK1107554A1; JP2007254027A

Abstract

The preservative film device of the invention can prevent the danger that cover body of the preservative film device may turn to the direction for closing the cover body under the action of elastic restoring force and cause the cutting blade contact the human hand. The preservative film device includes: a box (2), a coiling cylinder (5) for receiving and putting the preservative film in the box (2), and a cutting blade (20) for cutting the preservative film (31) drawn from the box. The box (2) a box main body (3) made of thick paper material and a cover body (14) made of thick paper material for closing the top opening of the box main body which is opened. The cover body (4) has a top plate (17) which is connected to the top side of the rear wall (14) by a flex part (43), and a cover front wall (18) hanging on the top plate, the cutting blade (20) is disposed with a blade (21) along the lower side of the front wall (18). The flex part (43) is molded to have a projecting part on the outer side of the box (2).

Description

Cling film device

Technical field

The present invention relates to a kind of cling film device, folding and unfolding is used for the reel of the preservative film of packaging for foodstuff in its casing, and preservative film can be pulled out to outside the casing, in more detail, relate to the cling film device that in cling film device, has safeguard construction, be used to prevent when preservative film is brought into use, open lid, when from casing, pulling out the front end of preservative film, lid rotates because of the elastic restoring force of himself, contacts with staff thereby cut off sword.

Background technology

In the past, the reel folding and unfolding of preservative film of packaging for foodstuff that will be used for family is in casing, by staff a certain amount of preservative film is pulled out outside casing when using preservative film, the cling film device that uses with being arranged on the cut-out sword cut-out on the casing is known then.Casing comprise have the case antetheca, the box main body of rear wall, diapire, opposed two end walls and upper opening and be attached at rear wall the top, can close the lid of upper opening.Box main body has: the case countermure, be attached at the case antetheca the top, box main body inside is extended downwards along case antetheca roughly; Adhesive linkage prevents to turn back on the reel from the preservative film that box main body is pulled out; And catch, the cut-out edge that makes preservative film leaves from the outside face of box main body.

Lid is included in the below that is positioned at the case antetheca when closing above-mentioned opening, cut off the cut-out sword of the preservative film of pulling out from box main body.The reel of untapped preservative film has pilot tape on the outer peripheral face of reel, be used for pulling out the leading section of preservative film from reel, when preservative film is brought into use, open the upper opening of box main body by staff, pinching pilot tape is pulled outwardly, thereby can pull out the leading section of preservative film from reel, and a certain amount of preservative film is pulled out outside casing.

Patent documentation 1 discloses a kind of packing container, has the container body of packed articles such as preservative film of unwinding and rewinding coiled drum and the lid that can link rotationally from the apical margin of the rear face of container body.The packing container of patent documentation 1 is to be purpose with the residual amount that needn't open the preservative film of lid in can confirming to use, is formed with to be used to have an X-rayed the window portion that inside observes is made of opening or slit on the established part of container body or lid.

Patent documentation 2 discloses a kind of packaging film container, prevents foreign matter with respect to the adhering to of packaging film, and the front end of the identification packaging film of pulling out easily.This packaging film container have unwinding and rewinding coiled drum packaging film container body and rotate the container cap that is attached on the apical margin in order to be turning cylinder with respect to container body with the apical margin of container body back face wall.Keep in the container body front side wall portion portion that faces the wall and meditates be provided with the protrusion tab outstanding on the overlapping part and be connected excision portion on the protrusion tab from the front of container body.

[patent documentation 1] spy opens the 2000-142683 communique

[patent documentation 2] spy opens the 2005-178901 communique

The reel folding and unfolding of preservative film is only being pulled out the preservative film of appropriate amount by staff in casing, when using preservative film and cut off in the cling film device that uses by the cut-out sword that is arranged on the casing outside casing, exist following danger, promptly rotating cover is opened casing when preservative film is brought into use, pulling is bonded in the pilot tape on the reel outer peripheral face, when from casing, pulling out the front end of preservative film, lid rotates to the direction of closing because of the elastic restoring force of self, contact with staff thereby cut off sword, bring the pain of injury to staff.

Summary of the invention

The object of the present invention is to provide a kind of cling film device that possesses the mechanism that can prevent this danger.Other purposes of the present invention and effect and effect can be understood by the following description.

Cling film device of the present invention comprises: casing has the box main body of ground paper system and can open the lid of the upper opening ground of box main body with its ground paper system of cutting out; The reel of the preservative film of folding and unfolding in casing; And the cut-out sword, can cut off the preservative film of pulling out from casing.In cling film device of the present invention, described box main body has the case antetheca, rear wall, and diapire, and opposed two end walls, the upper opening of box main body is surrounded by each top of case antetheca, rear wall and opposed two end walls.Described lid has via joggling part and is connected top board on the top of rear wall of box main body, and the lid antetheca that hangs down abreast with the case antetheca from the top board when lid is in the closed position, and described cut-out sword disposes blade along the bottom of lid antetheca.Described joggling part on the cross section parallel with end wall, the outside of described casing has protuberance, and has recess in the inboard of casing.Promptly be molded into towards the outside of described casing and be convex form.In addition, in the present invention, " back " be meant among Fig. 1 with the reel of folding and unfolding in box main body be benchmark near joggling part one side of (connecting lid and rear wall), " preceding " is meant its opposite side.And, " on " be meant that with the reel of folding and unfolding in box main body be the side of benchmark near opening.

Cling film device of the present invention can have following structure.(1) protuberance of joggling part and recess constitute, when the top board of described lid with the mode of the elongated surfaces that surpasses the box main body rear wall along the direction of opening upper opening when rotate the rear position, the lid top board under the effect of the elastic restoring force of joggling part from the rear position to the direction of closing upper opening rotational angle below 90 ° only, preferably only rotate below 70 °, more preferably only rotate below 45 °.(2) described joggling part by the 1st template with groove and have and the 2nd template of the opposed prominent bar of groove between ground paper carried out mold pressing makes.Ground paper can be molded between opposed groove and prominent bar.(3) ground paper of the described casing of formation is made of multilayer, and the layer of box outer surface one side is the closeest.(4) described preservative film is to be raw-material preservative film or aluminium foil with vinylidene chloride copolymer.In addition, the material of described preservative film can be a polyvinyl chloride, polyethylene, polymethyl-benzene, polypropylene etc.(5) be near the V-shape that the central portion of the bottom of described lid antetheca, has the summit along the blade of the bottom of described lid antetheca configuration.(6) the joggling part molding beyond the joggling part of connection lid and rear wall is pressed into towards the inboard of casing and has protuberance.(7) all joggling parts of described casing the assembling casing before by forming by mold pressing.

Description of drawings

Block diagram when Fig. 1 brings into use for the cling film device of the embodiment of the invention.

Fig. 2 is the block diagram during the cling film device of Fig. 1 uses.

Fig. 3 is the amplification view of the cling film device of Fig. 1 along arrow C-C.

Fig. 4 is the cutaway view identical with Fig. 3 of the state of expression when cutting off the preservative film rotating cover.

Fig. 5 is the signal amplification view of lid above the casing under the state of the elongated surfaces rotation of rear wall.

Fig. 6 is for forming protuberance on the face of the joggling part of the casing of ground paper system, forming the molding tool in the operation of recess and the cutaway view of ground paper on another face.

The specific embodiment

With reference to accompanying drawing embodiments of the invention are illustrated.Among the figure, give identical Reference numeral, omit its repeat specification for identical parts.Block diagram when Fig. 1 brings into use for the cling film device 1 of the embodiment of the invention, Fig. 5 forms the cutaway view of thickness of the ground paper of casing for exaggeration expression, be that elongated surfaces that lid surpasses rear wall is rotated and with the upper opening signal amplification view of the joggling part of open mode widely.Cling film device 1 comprises: the casing 2 of lid 4 that has the box main body 3 of ground paper system and can close the ground paper system of upper opening 38 with opening, the reel 5 of the preservative film of folding and unfolding in casing 2 and can cut off the cut-out sword 20 of the preservative film 31 of pulling out from casing 2.Cling film device 1 also has protrusion tab 37, for next time pulls out easily the cut-out edge of the preservative film of pulling out is left from tank surface.

As Fig. 1 and shown in Figure 5, box main body 3 has: case antetheca 12, rear wall 14 and diapire 13, and opposed two end walls 15.The upper opening 38 of box main body 3 is surrounded by each top of case antetheca 12 and rear wall 14 and opposed two end walls 15.Lid 14 has: be connected the top board 14 of the top of rear wall 14 via joggling part 43, the lid antetheca 18 that hangs down abreast with case antetheca 12 from the top board 17 when lid 14 is in the closed position, and two lid end walls 19.Cutting off sword 20 is the cut-out swords that dispose blade 21 along the bottom of lid antetheca 18.Above-mentioned joggling part 43 is moulded on the cross section parallel with end wall 15, the outside of above-mentioned casing 2 has protuberance (Fig. 5,431), has recess (Fig. 5,432) in the inboard of casing.

Fig. 1 and Fig. 3 represent to make lid 4 to rotate around joggling part 43, make the state after upper opening 38 is opened.In this state, pull out pilot tape 35, the ora terminalis 32 of preservative film 31 is pulled out outside box main body 3 from the reel 5 of preservative film, then as shown in Figure 2, the preservative film 31 of desirable length is pulled out outside casing 2 by

staff

61,62 by personnel selection.Outside preservative film 31 is drawn out casing 2 during desirable length, as shown in Figure 4, make lid 4 to the rotated position of closing upper opening 38, make the cut-out sword 20 that is provided with along the bottom of lid antetheca 18 be positioned at the place ahead of case antetheca 12, near the parts case antetheca 12 of being positioned at of preservative film 31 are placed on the blade 21 that cuts off sword 20 and cut off.The preservative film that downcuts is used for desirable packings such as food.Blade 21 is near the V-shape that has summit 22 central authorities of the bottom of lid antetheca 18.

Fig. 3 is the amplification view of the cling film device of Fig. 1 along line C-C, for the ora terminalis 32 of preservative film by its with pilot tape 35 pull out, lid 4 is around joggling part 43 rotational angle F (Fig. 3) only, with the upper opening 38 of opening casing 2.Promptly, pull out when bringing into use pinching pilot tape 35 by staff, upper opening 38 be opened significantly, top board 17 rotates the elongated surfaces 16 of top board 17 and rear wall between angulation F around joggling part 43 in the mode of the elongated surfaces 16 that surpasses rear wall 14 by staff.But, because the joggling part 42 of lid 4 is to be made by the rubber-like ground paper, so even produce to rotating opposite direction lid 4 to the closing direction restoring force of rotational angle R (Fig. 3) only with this.In existing cling film device, because this restoring force is bigger, so lid 4 rotates and cover upper opening 38, cut-out sword 20 might contact with staff and bring the pain of injury to staff.The application's invention improves the structure of joggling part 43, by making less the addressing the above problem of restoring force that acts on the lid 4 (top board 17).

Fig. 5 constitutes the cutaway view of casing 2 of thickness of the ground paper of casing 2 for exaggeration expression, be make lid 4 in the mode of the elongated surfaces 16 that surpasses rear wall 14 around joggling part 43 rotational angle F and open the amplification view of the state of upper opening 38 significantly only.As shown in Figure 5, as the rear wall 14 and the joggling part 43 of the portion that is connected with of top board 17 have be molded into the parallel cross section of end wall 15 (cross section parallel) with the paper of Fig. 5 on, the outside of casing 2 has protuberance 431, promptly outstanding toward the outer side structure.Other

joggling parts

41,42,44 of box main body 3 or lid 4 have to be molded in the inboard of casing 2 and have protuberance 411,421,441, promptly towards interior side-prominent structure.Joggling part 43 has recess 432 at box inside, and other joggling

part

41,42,44 has recess 412,422,442 in the casing outside.

In the embodiment of Fig. 5, joggling part 43 has to be molded in the outside of casing 2 and has protuberance 431, has the structure of recess 432 at box inside.According to this structure,, only during rotational angle F, on joggling part 43, produce plastic deformation to the direction of opening upper opening 38 in the mode of the elongated surfaces 16 that surpasses rear wall 14 at the top board 17 of lid 4 according to this structure.So, the angle R (Fig. 3) that joggling part 43 is recovered to the direction of closing upper opening 38 in the position after rotate under the effect of elastic restoring force is below 90 °, be preferably below 70 °, and more preferably be below 45 °.The angle R that rotates under the effect of restoring force is more little, cuts off then that sword 20 contacts with staff and brings grieved danger just more little to staff.

That is, joggling part 43 has protuberance 431 in the outside of casing, and has recess 432 in the inboard of casing, promptly towards the outside of casing outstanding (Fig. 5).In this structure, when the top board 17 of lid 4 in the mode of the elongated surfaces 16 that surpasses rear wall 14 when opening the direction rotational angle F (Fig. 3) of upper opening 38, the restoring force of the lid that produces from joggling part 43 4 self, promptly the angle R (Fig. 3) that rotates to the direction of closing upper opening of the position after rotate is below 90 °.Therefore, when the top board 17 of lid 4 in the mode of the elongated surfaces 16 that surpasses rear wall 14 when the direction rotational angle of opening upper opening 38 F=90 ° (Fig. 3), returning in the scope that rests on the elongated surfaces 16 that has surpassed rear wall 14 of the top board 17 that produces because of the elastic restoring force of joggling part 43, can not touch blade 21, can be safely pilot tape 35 and bonding thereon the ora terminalis 32 of preservative film be pulled out outside casing from upper opening 38.

By making joggling part 43 is to have protuberance 431 in the outside of casing 2, and has recess 432 in the inboard, and promptly towards the outstanding shape in the outside of casing, the less reason of the elastic restoring force of joggling part 43 can be considered as follows.The fiber that forms the ground paper of casing has that it is bigger with respect to the resistance that stretches, and is difficult for producing plastic deformation, then is easy to generate the character of plastic deformation with respect to compression.Joggling part 43 shown in Figure 5 is because lid 4 only rotates (the angle F of Fig. 5) with the elongated surfaces 16 that surpasses rear wall 14, so the plastic deformation of recess 432 script owing to the effect of tensile force of box inside reduces, produce big restoring force, but owing to be recess, so the effect compressive.Owing to relaxed the tensile force effect of compressive force, thereby do not produce big restoring force, and the protuberance 431 in the casing outside produces plastic deformation because of the effect of compressive force, thereby elastic restoring force reduces, its result can think that joggling part 43 single-piece elastic restoring forces reduce.

And has protuberance towards box inside at joggling part, have in the casing outside under the situation of existing shape (Fig. 5, identical) of recess with joggling part 42 shapes between rear wall 14 and the diapire 13, plastic deformation is less because the protuberance of box inside overcomes tensile force, and effect has tensile force, so produce bigger restoring force.Though the recess in the casing outside bears compressive force and plastic deformation, elastic restoring force is less, and the elastic restoring force that joggling part adds up to is bigger.Therefore, joggling part 43 as joggling part 42 under the outstanding situation of box inside, under the effect of the restoring force of this joggling part, the big R of the rotation of top board 17 does not rest in the scope above the elongated surfaces 16 of rear wall 14, top board 17 and blade 21 are near upper opening 38, and the degree that cut-out sword 21 contacts with staff becomes big.

Fig. 6 forms protuberance, forms molding tool in the operation of recess at opposite side in a side of the joggling part of the casing of ground paper system, and the ground paper face of inboard that will become casing is as the part sectional view of the ground paper on top.Among Fig. 6, the 1st template 80 have groove 81 and prominent bar 82, the 2 templates 90 have with groove 81 opposed prominent bars 91 and with prominent bar 82 opposed recesses 92.Ground paper places between the 2nd template 90 and the 1st template 80, by the compressive force of stipulating both is compressed, thereby form protuberance 421,431, recess 422,432 respectively on the assigned position of ground paper.The 1st template 80 and the 2nd template 90 for example can be configured to one last, and another perhaps is configured to flat opposed (ground paper becomes vertical direction) down.Protuberance 431 and recess 432 are made joggling part 43, and protuberance 421 and recess 422 are made joggling part 42.Ground paper between joggling part 43 and the joggling part 42 is partly made rear wall 14.Joggling

parts

41,42,44 beyond the joggling part 43 between lid and the rear wall etc. are moldable to become to have protuberance towards the inboard of casing.And all joggling parts of casing were preferably formed by the mono-operation before the assembling casing.

Claims

1. cling film device comprises: casing (2), the upper opening that has the box main body (3) of ground paper system and can open box main body are (38) with the lid (4) of its ground paper system of closing; The reel (5) of the preservative film of folding and unfolding in casing; And cut off sword (20), can cut off the preservative film (31) of pulling out from casing; It is characterized in that,

Described box main body (3) has case antetheca (12), rear wall (14), diapire (13), and opposed two end walls (15), the upper opening of box main body (38) is by the case antetheca, rear wall, surround with each top of opposed two end walls, described lid (4) has via joggling part (43) and is connected top board (17) on the top of rear wall, and the lid antetheca (18) that when lid is in the closed position, hangs down abreast with the case antetheca from the top board, described cut-out sword disposes blade (21) along the bottom of lid antetheca

Described joggling part (43) on the cross section parallel with end wall, the outside of described casing has protuberance (431), and has recess (432) in the inboard of casing.

2. cling film device as claimed in claim 1, it is characterized in that, the described protuberance (431) and the recess (432) of joggling part constitute, when described top board (17) with the mode of the elongated surfaces (16) that surpasses rear wall (14) around joggling part (43) along the direction of opening described upper opening (38) when rotate the rear position, lid (4) under the effect of the elastic restoring force of joggling part (43) from the rear position to the direction of closing upper opening rotational angle below 90 ° only.

3. cling film device as claimed in claim 1, it is characterized in that, described joggling part (43) be to the 1st template (80) with groove (80) and have and the 2nd template (90) of the opposed prominent bar of groove (91) between should form the ground paper of joggling part the part mold pressing form.

4. cling film device as claimed in claim 1 is characterized in that, the ground paper that forms described casing (2) is made of multilayer, and the layer of box outer surface one side is the closeest.

5. cling film device as claimed in claim 1 is characterized in that, is near the V-shape that has summit (22) central portion of the bottom of described lid antetheca along the blade (21) of the bottom of described lid antetheca (18) configuration.

6. cling film device as claimed in claim 1 is characterized in that, the joggling part (41,42,44) in addition of the joggling part (43) between described lid (4) and the rear wall (14) is molded in the inboard of casing has protuberance.

7. as each described cling film device in the claim 1 to 6, it is characterized in that recess of all joggling parts (41-44) of described casing (2) and protuberance formed by mold pressing before the assembling casing.