CN1035088A - A kind of container - Google Patents

Abstract

The present invention relates to be suitable for, and the container of carbonated beverages preferably, this container is made of thin-walled plastic material.The present invention attempts to provide a kind of thermoformed containers, it has a base configuration that is designed to stand higher internal pressure and does not change shape basically, wall and the base of being determined by the core that the footing of each interval centers on and from the core radiation are at footing with rise to the arrowband part of extending between the sweep of wall and constitute.The present invention also provides a kind of container by means of sealing of lid, and lid can be made of metal or plastics, and the container top moulding should be suitable for using.

Description

A kind of container

The present invention relates to be suitable for, and the container of carbonated beverages preferably, this container is made of thin-walled plastic material.

Aspect the research and development of the production that relates to a kind of thermoplastic container that is suitable for holding carbonated drink such as upright stone tablet wine or soft drink, people have done a large amount of work.In the past, these beverages mainly are contained in had the end cap that crimping engages, and some has in the metal can of ring-type handle opening device, or was contained in by screw top or cap stopper and in the osed top glass bottle.Metal can and glass bottle win the market of carbonated drink basically, and be main because they have the superatmospheric pressure of enough intensity to stand to exist in filling carbonated drink and osed top container.And these pressure further increase according to the ambient temperature of stock's container.Usually, ambient temperature is high more, and the internal pressure that is produced in container is big more.To these beverages with another reason of metal (can) and glass (bottle) be: these materials are high-seals to moisture and air, and the carbonated drink that is housed in glass and the can has long shelf-lifeing.

Though the glass and the metallo-application that are used for these containers do not produce some rough sledding.But; the price that at first can predict these materials increases soon than plastic material in the future; secondly and energy resources protection theorist feels that the energy required with producing the thermoforming plastic container compare, and producing these containers need be with too many energy.Glass bottle has significant disadvantages, is exactly dangerous property, and perhaps in a small range, this also is suitable for the metal can.Therefore, need a kind of containers of plastic material that is suitable for holding carbonated drink really.

When a kind of carbonated drink is installed in the containers of plastic material, As time goes on, and since pressure inside, this plastic material " plastic deformation ", and extend slightly.This must have the effect that the base that makes container is out of shape unevenly, so that if it preceding in beginning " plastic deformation " be stand alone type (erect arbitrarily), then it becomes self-alignment formula (bevelled) or is called " rocker " (effect).

The present invention relates to this problem and attempt to provide a kind of base that is used for plastic container of novelty, be designed to when filling carbonated drink and sealing, can stop " plastic deformation " that it will can not become one " rocker " so.Although the present invention relates generally to the closed container that is used for carbonated drink, but and be not limited solely to this, the base of obvious novelty of the present invention can be used for holding the container of other products, under special environment, allows to make internal pressure to increase.

Yet, when container is specifically designed to when holding carbonated drink, they may be for example constitute (content) to container and say and provide a kind of gas barrier so that stop a large amount of losses of carbonation gas after container closure at duration of storage.Consider this, plastic material can be in laminate form or at coated inside, to determine a shell and an inner covering, provide gas barrier, and shell provides bigger vessel strength.Container may be made of the plastic material of single thickness (individual layer) certainly.

Container can comprise the shell of a polystyrene, polypropylene, polyethylene etc., and lagging material can be, for example, and the acryhic material of high barrier, polyvinylchloride or its copolymer or a kind of coating such as saran (SARAN).

Above the container of described general type know, and usually in order to filling carbonated drink, and by means of closed with covers.When such container had sealed at first, therefore cooled beverage again helped to make carbonic acid gas to remain in the solution usually.After seal of vessel was good, along with beverage temperature rises to ambient temperature, the pressure of internal tank came the release of the carbonic acid gas of beverage and increases owing to some.Plastic deformation can take place in plastic material (often) as described like that, and this plastic deformation is not deletrious, and not producing " rocker " (effect) with it is condition, but will avoid any explosion of container certainly.

Thin-walled plastic material container of known manufacturing is to give (providing) when sealing, the convenience of the limited expansion of control under the gaseous tension increase situation in container, and Yan admires ㄒ Ju  to be provided and has a container with base of spherical concave regions, when the pressure in the container surpassed predetermined maximum value, this sphere concave regions can outwardly-bent globulate convex.This condition that increases the active volume of container helps alleviating internal pressure, and therefore reduces the danger that explosion takes place container subsequently, but it can produce undesirable " rocker " (effect) certainly.

The present invention attempts to provide a kind of thermoformed containers, and it has one and is designed to stand higher internal pressure and does not change shape basically, as what in known container, take place, the base configuration.

According to first target of the present invention, a leak free, thin-walled plastic material truncated cone container are provided, described container has a wall, with a footing by each interval, container is erect thereon arbitrarily, the determined base of the core that centers on, and from the core radiation, at footing with rise to the arrowband part of extending between the sweep of wall.Described arrowband partial action contains container and erects the plane on the surface of footing thereon arbitrarily and upwards emerge for the plastic deformation that suppresses core moves to prevent that it from passing, and the outside face of footing is the continuity of frusto-conical surface, and is positioned on the frusto-conical surface of container.

Preferably, the core of described arrowband partial sum base relies on and the determining section spherical surface.

According to this configuration, the base of plasticity_resistant deformation is to be designed to be about partly or part ball-shaped radius degree, and it has strength of fixation, and footing has the outside face of the frusto-conical surface that is positioned at container.

In another kind distributed, footing can be parallel separately and in edgewise bend, and the width of arrowband part is narrow between footing so, but wide at core and wall part (change).

The present invention also provides a kind of container by means of sealing of lid.

Lid can be made of metal or plastics, and the container top moulding should be suitable for using (purpose).

A concrete form of the present invention will be described now, as embodiment, with reference to accompanying drawing, wherein:

Fig. 1 is the transparent view according to the closed container of a concrete form of the present invention.

Fig. 2 is the part section side elevation of Fig. 1 container and seal cover cap.

Fig. 3 is the birds-eye view (ground plan) of the base of container shown in Fig. 1 and 4.

Fig. 4 is the front elevation of the base of the container shown in Fig. 3.

With reference to accompanying drawing, be a container 10 shown in Fig. 1 from the plastic material Heat forming.Used plastic material can be any suitable plastics (all) as a kind of acrylonitrile plastics, polyester plastics, polystyrene or (gathering) propylene, and can constitute by a kind of laminated plastics from the container of sheet heat forming, it comprises the shell of first kind of plastic material, with the inner covering of one second kind plastic material (all) as a kind of acrylonitrile barrier layer, it shows a kind of higher blocking capability to gas permeation.Container 10 dresses (being equipped with) as shown in Figure 1 have the frustum of a cone body wall 12 of tool upper rim 14, and form an outside nested rings 16 between marginal portion 14 and wall 12.The top of container is as shown in the figure by plastics or 18 sealings of metallo-lid, and lid 18 is equipped with a ring-type handle apparatus that is easy to open or one and similarly is easy to opening device.

At base, container dress (being equipped with) has the footing 22 of moulding, and its configuration is important to the present invention, and describes in detail with reference to Fig. 3 and 4.

Container is the shape of a cup, with carbonated beverages, and form a kind of for the single beverage of consuming, and the base of container is made of footing 22, to stop the only plastic deformation and the expansion of base, become one " rocker " with causing the container instability or making otherwise extend.

Fig. 2 represents the top of container 10, before lid 18 closes.Can see that when Heat forming container 10 is by dress (being equipped with) last top flanges 24, and lid 18 adorns (being equipped with) a U-shaped flange 26 that overturns is arranged, top flange 24 is located in wherein, and lid 18 is fitted in the top of container then.After lid closes, consequently sting tight top flange 24 at flange 26 place's crimpings, so lid 18 just seals the top that enters container.This realizes after container is filled carbonated drink.

Referring now to accompanying drawing 3 and 4, the base configuration clearly is illustrated in these figure.It is circular that footing 22 as shown in Fig. 3 is generally in planar view, just each footing has an outside face 28, in fact it be on the plane of truncated cone of wall 12, so that form a smooth continuity of that wall.This characteristic is important with regard to the manufacturing of container.Because it is convenient to the manufacturing of mould.

Be generally the smooth zone 30 of an ovum (kidney) shape at the base of each footing, and on the annulation that is erected at arbitrarily of ovum (kidney) shape profile 38 container that drops on an inclination (adjusting).In the inboard, each footing 22 in 40 zones as shown in Figure 4 inwardly and be inclined upward to the core 42 of the base of determining section sphere circle.

The sweep of the side of adjacent footing 22 is determined arrowband part 44, and it is for shrinking divergent contour to determine central narrowed part 46, one outsides part 48 and the inside part 50 that broadens that broadens, and it introduces core 42.Arrowband part 44 be in the same sphere of core 42 on.

As seen, a kind of base configuration of novelty is defined in a kind of thermoformed containers, and footing 22 is specially designed, with the intensity of increase base, and prevents to extend because of internal pressure is excessive when wherein holding carbonated drink.

Claims (10)

1. thin-walled plastic material container, it is characterized in that it has a frustum of a cone body wall, with a footing by each interval, container is erect thereon arbitrarily, the determined base of the core that centers on, and from the core radiation, and at footing with rise to the arrowband part of extending between the sweep of wall, described arrowband partial action moves for the plastic deformation that suppresses core, contain container and erect arbitrarily the plane on the surface of footing thereon and upwards emerge to prevent that it from passing, and described footing has the outside face on the frustum of a cone body wall.

2. a kind of container according to claim 1 is characterized in that, in sectional drawing, each footing its cross section usually is circular and is parallel sided.

3. a kind of container according to claim 1 and 2 is characterized in that wherein existing 6 identical and footing that equal angles ground is arranged.

4. according to the described a kind of container of any aforementioned claim, it is characterized in that wherein said container is Heat forming.

5. according to the described a kind of container of any aforementioned claim, it is characterized in that the arrowband partial sum core of wherein said base relies on and the determining section spherical surface.

6. according to the described a kind of container of any aforementioned claim, it is characterized in that wherein said container is made of the acrylonitrile plastic material.

7. according to any one described a kind of molten device of claim 1 to 5, it is characterized in that described container is made of the polyester plastics material.

8. according to any one described a kind of container of claim 1 to 5, it is characterized in that described container is made of polystyrene, and have an internal layer as a kind of acrylonitrile plastic material of gas barrier.

9. according to any one described a kind of container of claim 1 to 5, it is characterized in that described container is made of polypropylene.

10. according to the described a kind of container of any aforementioned claim, it is characterized in that described container holds carbonated drink, and admire the lid of fish hawk boat cricket material material and seal by means of having an easy lie  solid food father rose.

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