CN2313862Y

CN2313862Y - Improved structure of container body

Info

Publication number: CN2313862Y
Application number: CN 97241831
Authority: CN
Inventors: 江福全
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-10-06
Filing date: 1997-10-06
Publication date: 1999-04-14
Anticipated expiration: 2007-10-06

Abstract

The utility model relates to an improved structure for a can body of an easily-opened can. A tube blank which is made from polypropylene material is molded into a can body in a pull-blowing mode, and the tube blank is in a short tube shape. The top end of the tube blank is an opening, and the tube wall pathway of the periphery of the opening is convexly extended outwards to form a tube brim. The can body forms a can body with preconcerted thickness by the tube body of the tube blank, and the top end edge of the can body forms a can brim by following the tube brim. The periphery of the can brim is combined into a metallic upper cap in a roll extruding mode. The can body of the easily-opened can with the structure has a transparent effect, so content in the can body can be observed. The can body can also be rapidly manufactured in bulk production, and the manufacture cost and the material cost of the can body are very low.

Description

The tank body of easy open can improves structure

The utility model relates to a kind of beverage can, and being meant a kind of especially is tank body with PP (POLYPROPYLENE, polypropylene) material, and end face is provided with a metal top cover, and metal top cover has the tank body improvement structure of the easy open can of easy open can structure.

Easy open can structure commonly used is consulted Fig. 1 and Fig. 2, and wherein Fig. 1 is a traditional type easy open can scheme drawing, and Fig. 2 is the schematic perspective view of environment protection-type easy open can.No matter which kind of easy open can structure all comprises the tank body that a flake aluminum is made, establish a metal top cover at the tank body end face, the central authorities of metal top cover are provided with an easy open can draw ring structure.The draw ring structure of traditional type is the indentation tongue piece that a draw ring connects an easily openable, breaks away from loam cake when draw ring lifts to draw promptly in the lump together with tongue piece.And environment protection-type draw ring structure mainly is up to lift when drawing with the draw ring structure, and tongue piece is down suppressed, and still can expose cover gab, but the draw ring structure still links with loam cake, conveniently reclaims with tank body.

And the shortcoming of aluminum tank body can't directly be debated tank body content and the surplus amount of looking outward by tank body exactly, if visual by opening part, it is too small to be subject to aperture area, and problems such as jar interior insufficient light still do not see a jar interior situation.If with (for example: contain floating fruit grain) of its selling point of beverage demonstration itself, the aluminum tank body can't directly be looked and beverage products in external packing, so can't satisfy the producer's requirement.

And be to engage so that tin-plate sheet circle is round before aluminium pot, can produce a tangible joint mark, and the tin-plate Heavy Weight, the material body surface is existing dim, weighs with the angle of packing jar, and is real very not attractive in appearance.Then just be evolved into aluminium pot, but the forming technique cost of aluminium pot is also higher, and manufacturing speed is also slow.So if the tank body of easy open can be improved, solve the problem of visual tank body content, and can cost-cutting, make fast, this satisfies the producer's requirement surely.

For this reason, the purpose of this utility model is to provide a kind of tank body of easy open can to improve structure, and the tank body of easy open can is manufactured by PP, exactly make the pipe embryo with the PP material, again its stretch blow is shaped to the tank body of an easy open can, again at the metal top cover of tank body opening periphery edging one easy open can.To overcome the shortcoming problem that aforementioned aluminium pot is made and visual tank body content exists.

The utility model is achieved in that a kind of tank body of easy open can improves structure, and it mainly has a tank body, and the end face of this tank body is established a metal top cover; The structure of this metal top cover mainly has one day plate, this day plate be provided with the indentation opening sheet of an easily openable, an end of opening sheet connects a pulling-on piece; This day, the periphery of plate had a circular groove, and the open end of this circular groove up extends to form a sidewall.

Above-mentioned tank body is the tank body that gives the stretch blow moulding with the pipe embryo that polypropylene material is made, this pipe embryo is the short tube shape, the bottom is an arc circle closed, the top is an opening, radially outer the protruding out of the periphery tube wall of this opening forms a pipe eaves, this tank body forms the can body of a tool predetermined thickness by the pipe shaft of this pipe embryo, and the top edge of this can body is followed this pipe eaves and formed one jar of eaves, and this metal top cover edging is incorporated into this jar eaves.

Advantage of the present utility model:

Because tank body is to be manufactured by the PP material, has transparent effect, therefore can visual tank body content.And can make in a large number fast, and manufacturing and material cost are very low.Tank body also is difficult for collision deformation, and the pipe embryo can stretch blow becomes the tank body of different shape.

Following drawings and Examples will be described further the technical solution of the utility model.

Fig. 1 is the schematic perspective view of traditional type easy open can.

Fig. 2 is the schematic perspective view of environment protection-type easy open can.

Fig. 3 is a pipe embryo schematic perspective view of the present utility model.

Fig. 4 is the A-A cutaway view of Fig. 3.

Fig. 5 is the scheme drawing that pipe embryo blown film of the present utility model becomes tank body shape.

Fig. 6 is a schematic perspective view of the present utility model.

Fig. 7 is the A-A cutaway view of Fig. 6.

To shown in Figure 6, the tank body of the utility model easy open can improves structure and mainly has the pipe embryo 10 that a PP material is made by Fig. 3, and this pipe embryo is to be the short tube shape, and the top is an opening, and radially outer the protruding out of the periphery tube wall of this opening forms a pipe eaves 11;

This pipe embryo 10 goes into that stretch blow becomes a tank body 20 in the mould 100, this tank body 20 forms a can body 21 with predetermined thickness by the pipe shaft of pipe embryo 10, and can body 21 has elasticity, but the application of force is pushed the distortion nargin with reinstatement slightly, the top edge of this can body is followed this pipe eaves 11 and is formed one jar of eaves, 23, one metal top covers, 30 edgings in this jar eaves 23;

The structure of this metal top cover 30 mainly has one day plate 31, this day plate 31 nearly centre be provided with the indentation opening sheet 32 of an easily openable, an end of opening sheet 32 connects a traditional type draw ring or environment protection-type pulling-on piece 33; This day, plate 31 periphery had a circular groove 34, and the open end of this circular groove 34 almost vertically up extends to form a sidewall 35.This metal top cover 30 places the open top of this tank body 20, and its circular groove 34 is positioned at this opening peristoma, and the open ora terminalis edging of this sidewall 35 is coated on this pipe eaves 23, and turnover is coated on the bottom surface of this pipe eaves 23, promptly finishes combining of metal top cover 30 and tank body 20.And during these tank body 20 moulding nearly jar eaves 23 partly be to be a beveled edge 22 thick slightly than can body 21 wall thickness, the pressure when providing a good structural strength to bear edging metal top cover 30 by this beveled edge 22.And the thicker cause of these beveled edge 22 walls be because of pipe embryo 10 when the stretch blow moulding, the pipe tail of distal-most end bears maximum pressure and makes tube wall prolong attenuation, and the tube wall stretch blow pressure of nearly mouth of pipe periphery is less, and it is also less that tube wall prolongs degree, so the wall of beveled edge 22 is thick slightly than the can body wall.

Tank body with easy open can of said structure has transparent effect, and when the tank body that the PP material is manufactured is full of soda or pressurization in jar, this PP material promptly makes it present cooresponding hardness by the pressure in the jar, tank body 20 is not easy to suffer external force and destroys distortion when vanning, carrying, keep outward appearance complete, keep good shape.And the easy open can that aluminium material commonly used is made though when being full of beverage or pressurization in jar, still may cause the tank skin depressed deformation because of collision, influences outward appearance.The utility model is manufactured soon, the cost of material is low, can save the producer's manufacturing and material cost.And the utility model has more a benefit with PP material stretch blow moulding, the tank body that exactly can stretch blow becomes different shape, as long as tank body is kept the opening and jar eaves 23 of pre-sizing, just can engage different metal top cover 30, make the utility model be not limited only to the beverage class and use, also can take up other solid kind food.

Claims

1. the tank body of an easy open can improves structure, mainly has a tank body (20), and the end face of this tank body (20) is established a metal top cover (30); The structure of this metal top cover (30) mainly has one day plate (31), and this day plate (31) is provided with the indentation opening sheet (32) of an easily openable, and an end of this opening sheet (32) connects a pulling-on piece (33); The periphery of this day plate (31) has a circular groove (34), the open end of this circular groove (34) up extends to form a sidewall (35), it is characterized in that: described tank body (20) is the tank body that gives the stretch blow moulding with the pipe embryo (10) that polypropylene material is made, this pipe embryo (10) is the short tube shape, the bottom is an arc circle closed, the top is an opening, radially outer the protruding out of the periphery tube wall of this opening forms a pipe eaves (11), this tank body (20) forms a can body (21) with predetermined thickness by the pipe shaft of this pipe embryo (10), the top edge of this can body (21) is followed this pipe eaves (11) and is formed one jar of eaves (23), and this metal top cover (30) edging is incorporated into this jar eaves (23).