CN2920832Y

CN2920832Y - High-sealing compound can

Info

Publication number: CN2920832Y
Application number: CN 200620114096
Authority: CN
Inventors: 黄志新
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-04-10
Filing date: 2006-04-10
Publication date: 2007-07-11
Anticipated expiration: 2016-04-10

Abstract

Disclosed is a composite can primarily used as sales package for food and chemic products, comprising a tubular can body, a top cap and a lower end cap. Layers of materials convolute and agglutinate to form the can body which is interlined with a layer of thermoplastic materials. At least one of the two end caps has a double-layer structure, wherein the outer layer is a can cap made of metal and the inner layer is a composite cushion made of thermoplastic materials. The outer metal can cap layer is firmly crimped to the ends of the can body through a crimping element; the outer rim of the inner composite cushion layer is sandwiched between the metal can cap and the can body and the thermoplastic materials layer on the composite cushion and the thermoplastic materials layer on the inner wall of the can body fuse. One or more holes can be arranged on the metal end cap of the double-layer end cap and a source nipple can also be arranged. The utility mode has the advantages of a simple structure, an easy making process, good seal and reliability and can meet the packing requirements of food and chemic products which are very sensitive to oxygen and water vapor, thus extending their storage periods.

Description

High sealing degree composite tanks

Affiliated technical field

The utility model relates to a kind of small package packaging container, mainly is used as the consumer package of products such as food, chemistry.

Background technology

Present known composite tanks comprises a tubular tank body, two end caps up and down, and tank body comprises cardboard, aluminium foil, plastic sheeting etc. by multilayer material and is bonded by spiral or close wind.Tank inner surface contains the thermoplastic layer, understands the longitudinal seam that the flanging heat-sealing forms leakproof usually.Composite tanks end sealing mechanism and metal can are similar, adopt metal stamping to become end cap and are coated with and annotate behind the elastic seal gap-filling glue and the tank body seaming, utilize the sealing gap-filling glue to be clamped in the seam of tank body and end cap and prevent leakage.But because the flange degree of compound tank body is not enough and the slippage of sealing gap-filling glue, seals gap-filling glue sometimes and can not completely touch tank inner surface, cause sealing not exclusively.Tank body oil impregnate, spoiled, the iso-metamorphism phenomenon of making moist of oxidation can appear in the chrips that such composite tanks is used for packing oil-containing.If be used to pack the adhesion agent that wet steam solidifies, adhesion agent then can take place suck moisture solidification and inefficacy early.

Summary of the invention

In order to overcome the deficiency of above technology, reduce the durchgriff of composite tanks oxygen, wet steam, grease and organic solvent greatly, the utility model provides a kind of high-seal composite tanks, contains the end seal structure of improvement, and has higher reliability.

The technical scheme that the utility model technical solution problem is adopted is: comprise a tubular tank body, two end caps up and down, tank body are reeled by multilayer material and are bonded, and tank inner surface contains the thermoplastic layer; At least one end cap is the double-decker end cap, and skin is the metal cover, and internal layer is the composite pad that contains the thermoplastic layer; The outer layer metal cover passes through the firm seaming of bead structure in the tank body end; Internal layer composite pad outer is sandwiched between metal cover and the tank body, and the thermoplastic layer on the composite pad engages with the thermoplastic layer fusion of tank inner surface simultaneously; One or more holes can be provided with on the contained metal end of double-decker end cap, also hickey can be provided with; Another end cap can adopt known various enclosed constructions at present.

The beneficial effects of the utility model are, it is simple in structure, and is simple for production, the tightness height, and good reliability can satisfy various to the extremely responsive food of oxygen and steam or the packing requirements of chemical products, the Keeping life that prolongs them.

Description of drawings

Fig. 1 is the stereo appearance figure of the utility model one embodiment.

Fig. 2 is vertical semi-sictional view constructional drawing of the utility model embodiment.

Fig. 3 is the local amplification view of the utility model embodiment.

Fig. 4 is vertical sectional structure chart of another embodiment of the utility model.

The specific embodiment

Now further specify structure of the present utility model and embodiment in conjunction with the accompanying drawings.

Fig. 1-3 has described one of them most preferred embodiment of high-seal composite tanks of the present utility model, preferably as the packing of easy oxidation food of the frangible easy moisture absorption such as potato class snack.It comprises a tubular tank body (1), a upper end cover (2), a bottom end cover (3), an outer buckle closure (4).Tank body (1) is reeled by multilayer material and is bonded, and is followed successively by label layer (11), ply of board (121,122) and compound lining layer from outside to inside, and it is bonding that interlayer sticks with glue agent.The compound lining layer is composited by three sublayers again, is respectively the ply of paper (133) that easy maxxaedium is provided, aluminium foil that takes blocking effect or metallized film layer (132), heat sealable plastic film layers (133).The compound lining layer one side flanging and the another side that originally are sheet seal by plastic film layers (133), form the cylindric tank inner surface of side leakage free.The bottom end cover of composite tanks (3) is formed by stacking by metal cover (31) and composite pad (32).Metal cover (31) passes through the tightly end of occlusal tank (1) of crimping, and the outer of composite pad (32) is also sandwiched between metal cover (31) and the tank body (1) simultaneously.The composite pad surface contains heat sealable plastic film layers (321), but also clad aluminum foil layer (322) and ply of paper (323) strengthen barrier property and forming characteristics down for they.By external heat, the plastic film layers that composite pad contacts with tank inner surface (131,321) fusion and mutually welding forms the leakproof seam.Upper end cover (2) adopts and easily opens the epiphragma form, is heat-sealed in the oral area of tank body turnup.Outer buckle closure (4) is to establish for obtaining the secondary sealing.

Fig. 4 has disclosed another most preferred embodiment of high-seal composite tanks of the present utility model, preferably solidifies and cooperate the adhesion agent packing that special tool is extruded as the easy moisture absorption.Present embodiment and previous embodiment difference are that the contained metal end of its double-decker end cap (31) is provided with through hole, and are threaded (33).And another end cap (2) is taked the form of gag.Outside gag (2), also can be provided with outer gland sealing lid (not drawing among the figure) and strengthen leakproof, as aluminium easy-open end and tank body (1) seaming.Only need during use threaded connection (33) is connected nozzle, puncture composite pad (32), promote the adhesion agent construction that gag (2) just can be extruded interior dress.

Its cross sectional shape of high-seal composite tanks of the present utility model can be circular, also can be other shape such as square, oval, triangle etc.

Claims

1, a kind of high sealing degree composite tanks, comprise a tubular tank body, two end caps up and down, tank body is reeled by multilayer material and is bonded, tank inner surface contains the thermoplastic layer, it is characterized in that: at least one end cap is the double-decker end cap, and skin is the metal cover, and internal layer is the composite pad that contains the thermoplastic layer; The outer layer metal cover passes through the firm seaming of bead structure in the tank body end; Internal layer composite pad outer is sandwiched between metal cover and the tank body, and the thermoplastic layer on the composite pad engages with the thermoplastic layer fusion of tank inner surface simultaneously.

2, high sealing degree composite tanks as claimed in claim 1, it is characterized in that: the contained metal end of double-decker end cap is provided with one or more holes.

3, high sealing degree composite tanks as claimed in claim 1, it is characterized in that: the contained metal end of double-decker end cap is provided with hickey.