CN2168837Y

CN2168837Y - Food can easy-to-open

Info

Publication number: CN2168837Y
Application number: CN 93206856
Authority: CN
Inventors: 江仙观
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-01-18
Filing date: 1993-03-17
Publication date: 1994-06-15
Anticipated expiration: 2003-03-17

Abstract

The utility model relates to a cover of a food pop can, comprising a ring frame used for being connected with the rolling edge of the opening edge of the can body in a clamping mode, a composite material layer which uses an aluminum foil as a middle layer, a plastic outer layer which is integrally formed with the plastic film and has a composite structure, and a plastic pull ring which is integrally formed with the outer layer. The upper surface and the lower surface of the composite material layer are respectively coated with a plastic film. The aluminum foil and the outer layer of the plastic film are respectively provided with an annular concave mark, and the connecting part of the pull ring and the outer layer of the plastic film extends to form the annular concave mark. A cover plate is embedded at the ring frame in an injection molding mode. When the cover of a food pop can is opened, the pull ring is pulled upwards by fingers, and the plastic outer layer with the aluminum foil can be torn along the annular concave mark. When the cover of a food pop can is opened, fingers can not be scratched.

Description

Food can easy-to-open

The utility model relates to a kind of Food can easy-to-open.

The Food can easy-to-open that is used on the market mostly is the aluminium ring pull end lid of monolithic now, and a draw ring is arranged on the capping, and smooth linking closely is combined in capping.Because aluminium lid is a monolithic construction, thickness is thicker, and two kinds of modes of uncapping are arranged.It is a kind of to be Straight pull, and this mode is directly draw ring upwards to be drawn and tear aluminium lid.Another kind is a lever, is upwards to draw the other end that makes draw ring to be washed into an opening earlier to pressing down draw ring, continues then upwards to draw, and aluminium lid is torn along indenture, cover can be pulled the path and cover is pulled away from tank body along predetermined.The right traditional Food can easy-to-open mode of this kind has following many shortcomings, and for example: (1) has fine aluminium bits and falls into a jar interior food when tearing cover of pop can, and the people has eaten this aluminium powder bits residue and can be harmful to healthy; (2) the aluminium lid sheet edge that draws back is very sharp, and the user understands the scratch finger accidentally; (3) full aluminum easily draw back cover color and luster dullness, lack the aesthetic feeling that cooperates the tank body change color; (4) aluminum alloy materials of aluminium ring pull end needs the riveted joint of branch secondary processing with the aluminum alloy materials that covers draw ring because of material is different, can't be integrally formed, therefore increased manufacturing cost; (5) need to scratch earlier up perk of draw ring when opening jar, make ring, cover the vicinity, riveting point and break and opening, just can continue the application of force and pull cover, but run into the draw ring situation that falls of in advance breaking sometimes, so then can't continue to draw back cover again.And cover plate and tank body system directly hold the mode of closing under the arm with crimping and are connected and fixed, and are not easy to keep the air-tightness of height.

One of the utility model purpose, does not have break flours such as iron, aluminium and falls into a jar interior food when it is torn for a kind of Food can easy-to-open is provided,

Another purpose of the utility model is drawn back for a kind of being very easy to is provided, and can not injure finger, and draw ring can not rupture in advance, the Food can easy-to-open that safety is handy;

The another purpose of the utility model is for providing a kind of Food can easy-to-open of saving the processing and manufacturing cost;

The purpose that also has of the utility model can cooperate the tank body color to change for a kind of capping color is provided, to increase the Food can easy-to-open of aesthetic feeling;

According to the Food can easy-to-open of the utility model, it is characterized in that comprising:

One ring frame, the periphery punching out of this ring frame becomes approximate zigzag shape, makes it form ring in an outer shroud rim roll and, and the centre is a hollow space, and interior ring week punching out has a plurality of apertures, in the outer shroud rim roll chase, is filled with and is coated with sealing rubber;

3-layer composite material layer, centre are an aluminium foil layer, and respectively there is a plastic sheeting coating its top and bottom; The periphery punching out of this 3-layer composite material layer becomes approximate zigzag shape, and become the dish shape of having chance with, this shape is consistent with above-mentioned ring frame peripheral shape, and this dish shape spare is inserted with its zigzag periphery in the zigzag rim roll of ring frame and its lower surface of fitting, and seals ring frame hollow space;

The plastic outer layer of one ejection formation, this plastic outer layer ejection formation is on this 3-layer composite material layer and this ring frame of periphery driving fit, and through aperture and hollow space on the ring within this ring frame, and bonding with this 3-layer composite material layer, make this 3-layer composite material layer, this ring frame and this plastic outer layer be combined into one; This plastic outer layer has that to penetrate integrated draw ring smooth on capping on the hollow part of this ring frame, and is formed with the indenture along predefined paths from this draw ring and this skin junction; Identical indenture is also arranged on the aluminium foil of 3-layer composite material layer, make by 3-layer composite material layer and plastic outer layer and can tear along this indenture.

The Food can easy-to-open of the utility model, be very easy to just cover to be pulled away from, can not injure finger, do not have iron, break flours such as aluminium fall into a jar interior food, penetrate one-body molded by plastics, the identical processing and manufacturing cost that reduces of draw ring with the capping material, draw ring is breaking releasing easily not again, the color of plastics capping can cooperate the tank body color and change, increase attractive in appearance, and since plastics, make that it has a height at ring frame and tank body mouth edge joint place shape face sealing block oxygen and aqueous vapor through effect, can keep jar 3 years matter of interior food constant, with iron, the cover of aluminum has the identical quality guarantee of preapring for an unfavorable turn of events to deposit effect.

Below in conjunction with accompanying drawing,, architectural feature of the present utility model is described as follows in the mode of embodiment:

Fig. 1 is the Food can easy-to-open block diagram of the utility model;

Fig. 2 is three part decomposing schematic representations of the embodiment of the utility model Food can easy-to-open;

Fig. 3 a to Fig. 3 b is the manufacturing process scheme drawing of the ring frame among the utility model embodiment; Ring frame half-blank among Fig. 3 a to Fig. 3 c and finished product represent that it cuts the oblique drawing of half open, and with the shape of expression section, the ring frame among Fig. 3 a to Fig. 3 c is the expression of turning upside down;

Fig. 4 is the 3-layer composite material layer among the new embodiment of this practicality, makes scheme drawing;

Fig. 5 a is the superimposed scheme drawing on the 3-layer composite material layer of Fig. 4 of the ring frame of Fig. 3 d; The ring frame is for excising the section-drawing of half among the figure;

Fig. 5 b is with the plastics combination layer, and ejection formation is made the scheme drawing of the Food can easy-to-open of the utility model on the ring frame and 3-layer composite material layer of Fig. 5 a;

Fig. 6 is the generalized section of the utility model embodiment;

Draw ring was broken the path front end when Fig. 7 opened for the Food can easy-to-open of the utility model, and can peel off the scheme drawing of capping along the path indenture.

In Fig. 1,1 is tank body, and 2 is the cover of pop can of the utility model, when the cover of pop can leak-tight joint on tank body 1, but then actv. blocks oxygen, moisture penetrates in the jar, reaches the purpose of permanent preservation food.

Fig. 2 is the exploded drawings of three main portions of the utility model embodiment, the 3 3-layer composite material layers that form for the thin layer of resinizing in aluminium foil 3A top and bottom, 4 are the ring frame, 5 is the ejection formation plastic outer layer, 6 hollow spaces for the ring frame, 7 be all apertures on the interior ring that encircles frame, 8 is the draw ring on the plastic

outer layer

5,9 is to extend indenture along outer periphery formations from draw ring 8 on the plastic cement skin 5, is formation when plastic outer layer 5 is integrally formed.Plastic outer layer 5 is integrally formed rather than be shaped with single-piece in addition with composite layer 3 among the figure, is drawn as exploded drawings among this figure and does not represent three structures that just combine after making separately respectively (composite layer 3 is manufacturing separately in advance with ring frame 4) in order to the structure of representing each layer.

The making of present embodiment sees also the step explanation of Fig. 3 to Fig. 5.Among Fig. 3 a, 11 is tin plate such as tin-plate, goes out the part that blocks of cover sheet 12(only shows a slice in order to punching out); Among Fig. 3 b, the 12 rim roll portions that roughly are zigzag that go out for the periphery punching out of cover sheet 12, its rim roll is inner to be coated with sealing rubber 14 for filling, this is coated with sealing rubber 14 when 3-layer composite material layer 3 and 4 combinations of ring frame, and when three parts being consolidated with ejection formation plastics combination layer 5, can make the zigzag periphery of 3-layer composite material layer 3 insert in the zigzag rim roll of ring frame 4 and driving fit, especially when the utility model cover of pop can 2 sealings of finishing were placed on the food cans 1, this was coated with sealing rubber 14 and helps cover of pop can 2 and tank body 1 to cover mouthful complete driving fit of snapping periphery; Fig. 3 c is for becoming the cover plate central portion excision of Fig. 3 b the ring frame of ring-type, and wherein hollow space 6 has formed; Fig. 3 d be the ring frame of Fig. 3 c through secondary processing, zigzag (or turn upside down when using for

Shape) on the interior ring periphery, goes out many apertures 7 along the limit, and finish ring frame 4.

The shape of the 3-layer composite material layer 3 that Fig. 4 finishes for punching out is one deck aluminium foil layer 3A in the middle of wherein, respectively has been coated with one deck plastic membranous layer 3B and 3C up and down.

Fig. 5 will be for will encircle the frame 4 superimposed situations that place on the 3-layer composite material layer 3, and wherein the Z-shaped periphery bank of 3-layer composite material layer 3 is gone in the Z-shaped rim roll groove of frame lid 4; Fig. 5 b carries out the combination of ejection formation plastics for two laminations with Fig. 5 a, when carrying out the plastics ejection formation, the thermoplastic feed liquid of thawing see through on the ring frame inner edge all apertures 7 and with this 3-layer composite material layer 3 on layer plastic membranous layer 3B bonding, also because this layer plastic film, therefore the plastics liquid of this thawing can be easy to and suitably bonding with this 3-layer composite material layer 3; Simultaneously, the thermal plastic of this thawing still continues to clamp-on between the zigzag periphery driving fit of ring frame 4 and 3-layer composite material layer 3, finishes the ring edge and injects (RING INSERT).This ejection formation plastic outer layer has integrated draw ring 8 on the cover of pop can of finishing 2, and forms the extension indenture 9 along extension on every side from draw ring along periphery.

Fig. 6 is the section-drawing of the utility model Food can easy-to-open.Amplifier section 3B among the figure, 3C are upper and lower two layers of plastic film of 3-layer

composite material layer

3, and 3A is an aluminium foil layer, and 10 is the plastic outer layer of ejection formation, and 9 is the path indenture.

The cover of pop can that Figure 7 shows that the utility model is used on the food cans, when opening cover, scratch La Huan And with forefinger and directly pull back, can break path front end (as shown) easily, and will be pulled away from by the cover area place that the path indenture is centered on along the path indenture.In this embodiment, the interior trace of tearing indenture on the capping, its destination county and draw ring starting point still have a bit of distance not form trace, and the destination county of its outer trace engages with draw ring starting point place, when so the full wafer capping being pulled away from, what be pulled away from the middle of not causing partly falls into a jar interior food.

Claims

1, a kind of Food can easy-to-open is characterized in that comprising:

One ring frame, the periphery punching out of this ring frame becomes approximate zigzag shape, makes it form ring in an outer shroud rim roll and, and the centre is a hollow space, and interior ring upper punch is shaped on a plurality of apertures, in the outer shroud rim roll chase, is filled with and is coated with sealing rubber;