CN1071133A

CN1071133A - The combined hard packing can of flexible composite system

Info

Publication number: CN1071133A
Application number: CN 91109158
Authority: CN
Inventors: 魏长河; 徐考伸
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-09-28
Filing date: 1991-09-28
Publication date: 1993-04-21

Abstract

The invention belongs to the hard packing container, especially the combined hard packing can of flexible composite system is relevant, designed composite tanks tank body is with the flat tubular body that is rolled into of flexible composite, its tube wall has at least two-layer, ply adhesion all-in-one-piece flexible composite.The superficial layer of flexible material is plastic film, and the centre comprises one deck aluminium foil and ply of paper at least.The bottom lid can adopt conventional approach to be installed in the tank body two ends, and this composite tanks can replace can and the various solid, liquid of aluminium ring pull end splendid attire and flour and various fizz commonly used at present fully.

Description

The combined hard packing can of flexible composite system

The invention belongs to the hard packing container, especially relevant with the hard packing container of making of flexible composite.

Existing hard packing container, especially the food container major part is made with the tin-plate material, this container generally includes tank body and two bottom lids, tank body is with the tubular body that vertically both sides meshed into seam formation of a tin-plate along tank body, the bottom lid can be an identical fixed type bottom lid as required, also can be at the bottom of an end is fixed end, one end is an end cap to be opened/closed, the weak point of this hard packing container is the inwall corrosion-resistant, the long-term liquid dielectric of placing easily makes inwall get rusty, container weight is big, the cost height.Therefore, designed a kind of composite material of forming with paper, plastics and aluminium, this composite material has been bonded into pipe by spiral winding, again the composite tanks that constitutes with ferry core hard tank body of forming and the bottom lid that is contained in two ends at the pipe overcoat by the people.The major defect of this composite tanks is that tank body leans on the helix line interface to constitute integral body, and the helix line interface than the long 1.5-2 of longitudinal seam doubly, very easily bad or be squeezed seepage takes place, thereby this composite tanks only is fit to the dress solid material because of bonding quality, the material of adorning perishable again.Secondly this composite tanks moisture resistance is poor, and is yielding behind the moisture absorption or the chance water, even subsides.The somebody has designed a kind of drinking container of being made up of middleware and bottom, and its middleware is impermeable by a kind of liquid, and the multilayer film that the interlayer of welding inner plastic and a kind of densification that is enough to prevent that various spices from overflowing is formed is made.Middleware is the tubular body that longitudinal seam is arranged, and it is applicable to that splendid attire contains carbon-dioxide various beverage, and the main weak point of this container is that axial conquassation power is poor.Therefore, be not easy to stack and transport; Container under the effect of external and internal pressure, the easy to crack and seepage of longitudinal seam.

The objective of the invention is to design a kind of combined hard packing can with flexible composite system, this composite tanks good airproof performance is difficult for infiltration, can hold various materials such as solid, liquid body, the axial conquassation power of this kind composite tanks height is not afraid of extruding, stack and transportation in cracky not.

Design-calculated hard flexible package composite tanks of the present invention is made up of tank body and the bottom lid that is installed in the tank body two ends.Tank body is with the flat tubular body that is rolled into of flexible composite, tube wall has at least two-layer, ply adhesion all-in-one-piece flexible composite, flexible composite be bonded in along two axial edges of tank body that the outside constitutes longitudinal seam in the tank body.The bottom lid at tank body two ends can adopt various patterns commonly used.Flexible composite has plastic film at least, and four layer materials that aluminium foil, paper and plastic film are arranged in order constitute.The flexible composite that five layer materials that use is arranged in order by plastic film, aluminium foil, plastic film, paper and plastic film constitute has better effect.The plastic film of both sides can select for use various hot melts, liquid-impervious film, the composite tanks of splendid attire food then must be to adopt the edible plastic film.One of effect of plastic film is an interlayer hot pressing automatically in forming process, two be moistureproof, impermeable, corrosion prevention.Middle aluminium foil outside the impermeability, still has or not the effect of light transmission except increasing the intensity of tank body.Ply of paper adopts craft paper usually, to increase the intensity and the straightness of tank body.The number of plies of composite material is many more in the tube wall, and then to reveal property good more for the intensity of tank body, moisture resistance, antiseepage.Two bottom lids can be used tin-plate, also can be with making with the tank body identical materials.

When making design-calculated hard composite tanks of the present invention, earlier selected flexible composite is cut one by the height and the diameter that design can, then with its as an edge rewinding of tank body seam outside external diameter equals the jar base of desire system tank body internal diameter, remainder progresses into the heating zone that places Heat sealer, composite material is under the situation of limit heating, limit pressurization Horizon twists on jar base, because the plastic film of composite material both sides has been in molten condition when heating, therefore flatly twist in the outside plastic film of the inner layer composite material on jar base and the inboard plastic film of outer layer of composite material is bonded together under pressure securely, the edge of the composite material of tank body inboard is bonded in the inboard of tank body, its another side constitutes the longitudinal seam of tank body along the outside that is bonded in tank body.Can adopt conventional method to be installed in the tank body two ends at the bottom of the end cap at two ends, the method that also can adopt hot pressing is bonded in the tank body two ends with the bottom lid of composite material of the same race.

Fig. 1 is a kind of constructional drawing that has the hard composite tanks of fixed type end cap of design-calculated of the present invention.

Fig. 2 is the enlarged drawing of I among Fig. 1.

Fig. 3 is the transverse sectional view that the composite material of two-layer ply adhesion is arranged, wherein composite material be four layers compound.

Fig. 4 is the transverse sectional view with three bonding composite materials between layer by layer, wherein composite material be five layers compound,

The hard packing tank of the present invention design is because tank body adopts the multi-layer compound structure of ply adhesion, thus good airproof performance, corrosion-resistant, enough intensity arranged. Through test, three months ne-leakages behind splendid attire gasoline and the kerosene. Axially crushing force can be stacked and transportation as the first sample of can up to 1900N, is not afraid of extruding, can not break. The composite tanks moisture resistance is good, is placed on to soak in the water also can not be out of shape with soft in two days to subside.

Designed this hard composite tanks can be made difformity as required, and different size holds various liquid, solid and powder dress material, especially various solid foods, liquid beverage, the various beverages of carbonated or inflation. The various food of splendid attire can be because composite tanks go bad in the corresponding shelf-life, and composite tanks also can hold various industrial chemicals, such as paint, viscose glue, dyestuff etc.

To be further described embodiments of the present invention and effect thereof in conjunction with the accompanying drawings by embodiment below.

1. use four layers of commercially available compound composite material, promptly by plastic sheeting 31,

aluminium foil

32,35 4 layers of compound flexible composite of craft paper 34 and plastic sheeting are as the tank body material, tin-plate is made the hard composite tanks of 99 * 130 millimeters of φ as bottom lid material.By the size of composite tanks, cut one be of a size of wide 130 millimeters, long 630 millimeters flexible composite.The jar base is of a size of 99 * 130 millimeters of φ.The flexible composite broad ways is sent in the hot press earlier, and rewinding big half-turn on the jar base, a side of aluminium foil is towards the jar base, and remainder progresses into the heating zone of hot press, and heating-up temperature is about 160 ℃.The situation bottom that composite material heats on the limit adds pressing and twists on jar base, and pressure is about 5 kilograms.Because the plastic film of composite material both sides has been in molten state when heating, therefore flatly twist in the outside plastic film of the inner layer composite material on jar base and the inboard plastic film of outer layer of composite material is bonded together under pressure securely.One edge of the composite material of tank body inboard is bonded in the inboard of tank body, and another side constitutes the inside and outside longitudinal seam of tank body along the outside that is bonded in tank body, and inside and outside longitudinal seam is basically at same position.So just made the tank body with two-layer composite material of a ply adhesion.

Can adopt conventional method that tin-

plate bottom lid

7,8 is installed in the two ends of tank body 6 respectively, as shown in Figure 2, make the fixed end bottom, during the installation end bottom, the technology material of packing into and need hold routinely.This hard composite tanks is fit to the various food or the chemical of splendid attire solid and thick matter liquid.Through evidence, the axial conquassation power of this composite tanks is 1200N, end cap breakaway force＞450N, and after carrying out a/s fall-down test, composite tanks is not broken, and is non-leakage.If make movable end cap, then this kind hard composite tanks is more suitable for the splendid attire malted milk, various food such as milk powder, and the food of taking during use is more convenient.The weight of this composite tanks only about 80 grams, is about 53% of same specification can.Therefore, the alternative fully general can of the composite tanks of this structure by tin-plate system.

2. use by food plastic film 41, aluminium foil 42, food plastic film 43, the commercially available flexible composite that craft paper 44 and food plastic film 45 are formed adopts example 1 described substantially the same technology to make the tank body with 3-layer composite material of ply adhesion.Difference is that the termination of the seam end of tank body inboard amounts to outer direction, and it amounts to part and cladding material pressing, and amount to the nexine direction termination of the seam end in the outside, and it amounts to part and the pressing of nexine material, constitutes inside and outside seam.This seam can prevent effectively that pot liquid from infiltrating the tank body internal layer by the end, can prevent that also outside moisture by end infiltration tank body internal layer, promptly has better moisture resistance and leakproofness.

Make the end cap of bottom and pop can type with tin-plate, adopt conventional approach that bottom and end cap are installed in the tank body two ends, making oad is the pop can of 62 * 125 millimeters of φ.This pop can is fit to the various beverages of splendid attire, especially is fit to gas filed various liquid beverages such as splendid attire such as beer, Coca-Cola, Sprite.This composite tanks has been carried out various tests, wherein, in the quick leakage test of under the 20Kpa test value, carrying out seepage has not taken place; The end cap breakaway force reaches 769N; Axially conquassation power reaches 1900N; Be placed in the water that to soak two days composite tanks indeformable, not soft, have fabulous moisture resistance; In fall-down test, do not break without leakage; Three months ne-leakage phenomenons of splendid attire kerosene or gasoline have good sealing property; The beer of splendid attire never degenerated in its maintenance phase; This container can be stacked and transports fully as aluminium ring pull end, is not afraid of extruding, can not be out of shape and damaged.Above-mentioned test shows that design-calculated composite tanks of the present invention can substitute aluminium ring pull end fully.

3. make tank structure identical in the use-case 2, be that with example 2 differences the bottom lid adopts and the tank body identical materials is made.Hot pressing is covered at the tank body two ends in the bottom, make composite tanks with fixed end bottom.The results showed that this composite tanks has and the essentially identical performance of example 2 described composite tanks, can splendid attire various solid, liquid body food and chemical, but also other solid, liquid of splendid attire, powdered substance.

Claims

1, a kind of by tank body be installed in the combined hard packing can that the bottom lid at tank body two ends is formed, it is characterized in that:

Said tank body is with the flat tubular body that is rolled into of flexible composite, the tube wall of said tubular body has at least two-layer, ply adhesion all-in-one-piece flexible composite, the outside that is bonded in along two axial edges of tank body in the tank body of flexible composite constitutes longitudinal seam, said flexible composite is by a kind of hot melt, and impermeable plastic film internal layer of liquid and skin and interlayer aluminium foil and paper constitutes.

2, by the said composite tanks of claim 1, it is characterized in that: said flexible composite also has one deck plastic film between aluminium foil and paper.

3, by the said composite tanks of claim 2, it is characterized in that: the tube wall of said tubular body has three layers, interlayer to stick into the flexible composite of one.

4, by claim 2 or 3 said composite tanks, it is characterized in that: said flexible composite along in two axial edges of tank body, the edge of tank body inboard is outwards amounted to, it amounts to the inboard that part is bonded in tank body, the edge in the tank body outside is inwardly amounted to, amount to the outside that part is bonded in tank body, the longitudinal seam of outside tank body in forming respectively.