CN2150160Y - Easy-to-open cover for food jar - Google Patents

Abstract

The utility model discloses an easy-to-open cover for a food jar, comprising a circular frame which is clamped with the beading of the opening edge of the jar; a composite material layer in which an aluminum foil is provided as the middle layer; the upper and the lower surface of the aluminum foil is coated with plastic film; a plastic outer layer composed of the compound outer layer structure of the integral forming plastic film; a plastic pull ring of the integral forming. In addition, the aluminum foil and the plastic film outer layer are respectively provided with circular indent extending from the connection position between the pull ring and the plastic outer layer. A cover board is molded and is embedded in the circular frame. When the cover of the jar is to be opened, the finger-shaped pull ring is pulled upwards; then the plastic outer layer together with the aluminum foil can be torn along the circular indent.

Description

Easy-to-open cover for food jar

The utility model relates to a kind of food cans easy-open end, refers to that especially a kind of capping has the skin and the draw ring of polyethylene (PE) one injection molded, is a kind of food cans easy-open end simple in structure, safe and convenient to use.

Employed on the market now food cans easy-open end mostly is the aluminum easy-open end of monolithic, 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 direct-type, 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 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.Right this known food cans easy-open end has following many shortcomings, and for example: (1) has fine aluminium bits and falls into a jar interior food when tearing easy-open end, and the people has eaten these aluminium powder bits residues and can be harmful to healthy; (2) the aluminium lid sheet edge that draws back is the peak profit very, and the user can hurt finger accidentally; (3) the easy-open end color and luster dullness of full aluminum lacks the aesthetic feeling that cooperates the tank body change color; (4) aluminum alloy materials of aluminum easy-open 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 perk on the 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, yet run into the draw ring situation that falls of in advance breaking sometimes, so can't continue to draw back cover again.And cover plate and tank body are directly to hold the mode of closing under the arm with crimping to be connected and fixed, and are not easy to keep the air-tightness of height.

In view of this inventor is to design to have the polyethylene integrated through injection molding to be shaped on this kind capping simple structure, the food cans easy-open end that safety is handy.

A purpose of the present utility model provides a kind of food cans easy-open end, and this lid is a kind of easy-open end that break flours such as iron, aluminium fall into food in the jar that do not have when uncapping;

Another purpose of the present utility model provides a kind of being very easy to and draws back, and can not injure finger, the food cans easy-open end that safety is handy;

Another purpose of the present utility model provides a kind of capping by the moulding of polythene material integrated through injection molding, can save the food cans easy-open end of processing and manufacturing cost;

A purpose more of the present utility model provides a kind of capping draw ring and capping is made by same rubber-like polythene material, the food cans easy-open end that draw ring can not rupture in advance;

The utility model also has a purpose to provide a kind of capping color can to cooperate the tank body color and change, to increase the food cans easy-open end of aesthetic feeling;

Food cans easy-open end of the present utility model, except having above-mentioned characteristic advantages, because plastic material forms (seal) effect of sealing at ring frame and tank body mouth edge joint place, have and highly block the effect that oxygen, aqueous vapor see through, can keep jar 3 years matter of interior food constant, have the identical quality guarantee of preapring for an unfavorable turn of events to deposit effect with the cover of iron, aluminum.

Food cans easy-open end according to the utility model provides comprises:

(A) in order to holding the ring frame that closes binding under the arm with tank body mouth limit crimping, this ring frame has outer shroud and interior ring, and outer shroud has the recess filling to seal to use resin material, interior ring be the crimping that hook portion is arranged interior week;

(B) respectively coat the 3-layer composite material layer that plastic sheeting forms in the aluminium foil top and bottom, the periphery of this composite layer system is affixed on below the outer rim roll of above-mentioned ring frame and the inner peripheral and the central opening portion that will encircle frame seals;

(C) plastic outer layer that forms with injection molded with above-mentioned ring frame and composite layer one, this plastic outer layer be the outside that is connected in this composite layer with the ring frame in above the ring, and some enters in this ring frame the hook portion of all crimpings in the ring;

(D) with the integrally formed draw ring of this plastic outer layer; And

(E) be located at this draw ring certainly of above-mentioned plastic outer layer and paper tinsel face and the indenture that extend this skin junction respectively;

Food cans easy-open end of the present utility model also comprises:

(1) 3-layer composite material layer, this 3-layer composite material layer be by the aluminium foil layer of centre, and top and bottom are coated with and form a film with plastic material and form; The periphery punching out of this 3-layer composite material layer becomes the limit to become the dish shape of having chance with like the zigzag shape;

(2) ring frame, the periphery punching out of this ring frame becomes approximate zigzag shape, middle rounded hollow, the crimping structure that is processed into hook-type interior week of the interior ring of zigzag in the outer shroud rim roll chase, is filled with and is coated with sealing rubber; The peripheral shape of this ring frame is consistent with the edge portion shape of above-mentioned this 3-layer composite material layer;

(3) injection-molded plastic skin, this plastic outer layer is injected and molded in along this 3-layer composite material layer of periphery driving fit and this frame and covers, and the crimping hook portion that makes plastics enter the interior ring inside circumference of ring frame fasten and with ring frame mortise, 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 is positioned on the hollow part of this frame lid, and has the draw ring of integrated through injection molding moulding smooth on capping, and is formed with the indenture along predefined paths from this draw ring and this skin junction; Also be provided with identical indenture on the aluminium foil, so that can tear along this indenture by 3-layer composite material layer and plastic outer layer.

In the accompanying drawings,

Fig. 1 is a food cans easy-open end of the present utility model, is used in the situation on the food cans;

Fig. 2 is three part decomposing schematic representations of the embodiment of the utility model food cans easy-open end;

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

Fig. 4 is the 3-layer composite material layer among the utility model embodiment, makes scheme drawing;

Fig. 5 a is the superimposed scheme drawing on the 3-layer composite material layer of Fig. 4 of frame lid of Fig. 3 d; Figure center lid is the section-drawing of half expression of excision;

Fig. 5 b is with the injection-molded plastic combination layer, is injected and molded on Fig. 5 a, makes the scheme drawing of food cans easy-open end of the present utility model;

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

Fig. 7 is used on the food cans for the utility model, and draw ring is broken the front, path during unlatching, and can peel off the scheme drawing of capping along the path indenture.

In Fig. 1,1 is tank body, and 2 is easy-open end of the present utility model, when easy-open end 2 closely is attached on the tank body 1, then can effectively block oxygen, moisture content penetrates in the tank, 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, and 4 for the ring frame, has outer shroud F1 and interior ring F2, becomes one section H of portion between interior ring F2 and the outer shroud F1; 5 is the injection-molded plastic skin, 6 hollow spaces for the ring frame, 7 the hook-shaped crimpings that are processed in interior week for ring F2 in the ring frame, 8 is the draw ring on the plastic outer layer 5,9 is to extend the indenture that forms along outer periphery from draw ring 8 on the plastic outer layer 5, is to form when plastic outer layer 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, and being drawn as exploded drawings among this figure is 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 13 rim roll recesses that roughly are zigzag that go out for the outer peripheral edges of cover sheet 12 that is outer shroud F1 punching out, this rim roll recess is coated with sealing rubber 14 for being filled with, this is coated with sealing rubber 14 when 3-layer composite material layer 3 and 4 combinations of frame lid, and when three parts being consolidated with injecting formed plastic combination layer 5, can make the zigzag periphery of 3-layer composite material layer 3 insert in the zigzag rim roll of frame lid 4 and driving fit, especially when 2 sealings of the utility model easy-open end of finishing are placed on the food cans 1, this be coated with sealing rubber 14 help to uncap 2 with the complete driving fit of tank body 1 lid mouthful 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, with zigzag (or turn upside down when using for Shape) crimping that is processed into hook portion interior week 7 of interior ring F2, 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 a is for to cover the 4 superimposed situations that place on the 3-layer composite material layer 3 with frame, wherein 3-layer composite material layer 3

Shape periphery bank is gone into frame lid 4 In the shape rim roll groove; Fig. 5 b carries out the injection-molded plastic combination for two laminations with Fig. 5 a, when carrying out injection molding, the thermoplastic feed liquid of melting flows into the hook portion of the crimping 7 in interior week of ring F2 in the cover frame and firmly combines with the ring frame, simultaneously bonding with the upper strata plastic membranous layer 3B of this 3-layer composite material layer 3, also because this layer plastic film, the plastics liquid of this thawing can be easy to and suitably bonding with this 3-layer composite material layer 3, injects (RING INSERT) and finish the ring edge.This injection-molded plastic skin has integrated draw ring 8 on the easy-open end of finishing 2, and forms the extension indenture 9 that extends along on every side from draw ring along periphery.This draw ring 8 and indenture 9 be the region of interest at mould be set as need projection and depression and forming.

Fig. 6 is the section-drawing of the utility model food cans easy-open end.Amplifier section among the figure, 3B, 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 5 are the plastic outer layer of injection mo(u)lding, and 9 is the path indenture.

Figure 7 shows that food cans easy-open end of the present utility model is used on the food cans, when opening cover, scratch draw ring with forefinger and directly pull back, can break path front end (as shown) easily, and be pulled away from by the cover area place that the path indenture is centered on along path indenture shape.In this embodiment, the interior trace of tearing indenture on the capping, its destination county and draw ring starting point place 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, the area that is pulled away from the middle of not causing falls into a jar interior food.

Food cans easy-open end of the present utility model, be fit to a large amount of high-speed production, be very easy to just cover to be pulled away from, can not injure finger, do not have break flours such as iron, aluminium and fall into a jar interior food, by plastic injection-moulded one-body molded, 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 appearancely, and it has block oxygen and the aqueous vapor of height to see through effect, therefore is rich in novelty, progressive and practicality.

Though the utility model is illustrated by embodiment, but ought to understand under the broad spirit and viewpoint situation that in the utility model specification sheets and claims scope, are defined, various change forms or modification all should belong to scope of the present utility model.

Claims (1)

1, a kind of food cans easy-open end is characterized in that:

A. in order to holding the ring frame that closes binding under the arm with tank body mouth limit crimping, this ring frame has outer shroud and interior ring, and outer shroud has the recess filling to seal to use resin material, interior ring be the crimping that hook portion is arranged interior week;

B. respectively coat the 3-layer composite material layer that plastic sheeting forms in the aluminium foil top and bottom, the periphery of this composite layer is to be affixed on below the outer rim roll of above-mentioned ring frame and the inner peripheral and will to encircle the central opening portion sealing of frame;

C. the plastic outer layer that forms with injection molded with above-mentioned ring frame and composite layer one, this plastic outer layer be the outside that is connected in this composite layer with the ring frame in above the ring, and some enters in this ring frame the hook portion of all crimpings in the ring;

D. integrally formed with this plastic outer layer draw ring; And

E. be respectively equipped with this draw ring certainly of above-mentioned plastic outer layer and paper tinsel face and the indenture that extend this skin junction;

Form.

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