CN1426364A

CN1426364A - Container with body and lid

Info

Publication number: CN1426364A
Application number: CN 01808473
Authority: CN
Inventors: 阿道夫·克莱因
Original assignee: Sulo Eisenwerk Streuber and Lohmann GmbH
Current assignee: Sulo Umwelttechnik GmbH
Priority date: 2000-05-10
Filing date: 2001-05-09
Publication date: 2003-06-25
Also published as: CA2406653A1; AU2001267418A1; DE10022851A1; WO2001085564A1; JP2003532596A; RU2002133047A; EP1282563A1

Abstract

The invention relates to a container, comprising a barrel-like body (1) and a fitted, sealing lid with a seal, which excludes contamination of the contents during transport and storage and which permits opening and closing without a loss of sealing ability. The above is achieved without an elastomeric seal as an additional component, thus comprising as few components as possible. The container with a body (1) and lid (2) and a tightening device, for the seal tightening of the lid (2) against the body (1) is characterised in that, in the tightened state, the lid (2) engages tightly against the body (1) on a complete, annular first sealing position (4), which encircles the symmetrical axis of the container and the tightening device is axially separated from the first sealing position (4).

Description

The container that comprises stack shell and lid

I. application area:

The present invention relates to comprise cylindrical stack shell and annex, i.e. the container of seal cover cap.

II. technical background:

Today, Powdered carbon dichloride (TFE) homopolymer and copolymer are put into the cylindrical plastic container or cylinder made of paper is the way of using always, the stack shell of this container is preferably cup-shaped, refills upper cover on it.This container is used to protect the above-mentioned poly-mer of production and processing under clean-room condition, in order to avoid be subjected to the destruction of dust, wet steam and compressing stress.In the TFE polymer processing, various impurity, wet steam reach because the polymer beads that the effect of stress is compressed all can produce defective in molded item or the extrudate of being made by polymerizate, especially in thin-gage goods, in cable prepuce or film, this class defective is unacceptable.

As the high-quality finished product, more better with the plastic container that for example polypropylene is made with regard to the packing of powder polytetrafluoroethylene (PTFE) than cylinder made of paper, because the surface quality of plastic container is good, also can save the film lining of protection powder.

Plastic container must satisfy all kinds of high requests: even they must have enough air-tightness under keying situation repeatedly.Moreover, according to the requirement of DE-U-94 08 630, the compression effort that the container that they must anti-ly be filled is stacked in the unit packaging unit to be produced.In fact, the dish number of stacking reaches the 2-4 tray, and dress layer 2-3 container in each tray, container can be adorned the powder 20-50Kg that weighs, and the loading height in the when filling with substance container can not surpass regulation because dress many powder can hardening, can not guarantee correctly to be processed.

Technical sophistication, the most handy injection moulding manufacturing of powder PTFE container that requirements for quality is high.In this technology, because price is used the standard plastic manufacturing, as polypropylene or polyethylene.Because even if container range of temperatures when accumulating also will have high stability for-20 ℃ to 60 ℃, so the propylene copolymer of handy chemical modification is a raw MAT'L.Packaging system is expensive, so its order border is by cleaning, recharging to reach and reuse.

To the container of PTFE powder, its seal request is very special.For example the known single lid system that just uses as coating compares, and is three circular construction systems according to the packaging system of EP-B-362 959 defineds, and by the container stack shell, lid and tensioning ring are formed.Its sealing principle is based on such fact, and toward outer incline, and the winding type flange that is positioned at the lid inner edge was pressed on stack shell top by tightening hoop when promptly stack shell top extended upwardly.But the restoring force of these winding type flanges is very little, therefore through opening and closing the just very fast decline of leak tightness first.Again the utilization of lid and the turnover of container are practically impossible.

In addition, produce sealing lip with injection moulding and see the very big and easy damage of loss, require that complicated ventilation is arranged on injection moulding tool because sealing lip is done satisfactory injection moulding from technological standpoint.In Shooting Technique, the Polymer sediment can cause the obstruction that plenum area is comprehensive or local, and this will cause the circuitous flange injection moulding that approaches imperfect, thereby does not guarantee sealing property.

Utilize inboard thin being sealed among the WO-A-96/37 410 of circuitous flange of lid that the rectangular plastic container has been made general description.

US-A-4674650 is described the sealing of round plastic container, and this container comprises the container stack shell, lid and tightening hoop.Sealing realizes that by seal ring seal ring is placed in the lid, and seals stack shell downwards.The seal ring of elastomeric material brings many shortcomings: it makes system more expensive, makes packaging system be difficult to automated washing before use, and when system finishing, if container material will reuse, it must split into more part.

Usually from Sulo Plast GmbH ﹠amp; In the packaging system that comprises container stack shell, lid and tightening hoop that Co.KG company has bought, be to realize leak free with for example being molded in the groove of lid by the elastic sealing element of polyurethane manufacturing.This elastic sealing element is pressed on the top of stack shell.The basic shortcoming of this system is that elastic sealing element may damage under action of compressive stress in storage and transport process.The part sealing member peel off and may infiltrate the protection the PTFE powder in.In addition, also have this situation, after packaging system was used, if the container cover repeated usage, then elastic element must separately be preserved.

III. Fa Ming statement

A), technical matters

The purpose of this invention is to provide a kind of container with sealing member, charging can be not contaminated in its storage and transport process, can repeat to open and close and do not reduce leak tightness, and save the elastic sealing element as the additional materials element, and it is made up of minimum individual component.

The answer of b, problem

This problem is solved by the feature of claim 1.From requiring, subclaim can understand the advantage of embodiment.

Because first seal point 4 is spaced apart in axial position and tensioning device 3, therefore lid and/or stack shell in the middle of can be constructed like this, make them between relaxation state and tensioning state elastic deformation take place, meanwhile, elastic-restoring force guarantees leak tightness.In addition, because second seal point 5 can be arranged in the interval of tension link, provide safer sealing so jointly.

Because cup-shaped container to a side opening and lid dress thereon, so seal point always designs like this, makes their closed on circumference, and the basic configuration of tubular container is not circle or polygon.

The tension link preferred design becomes with one of container parts to be made of one, and preferably be made of one, and be preferably on the circumference and be not continuous but be distributed on several points with lid, for example on 4 o'clock, apart about 90 ° of each points.

At this, tension link comprise one radially down extend compress boss fast, be preferably formed on the stack shell and preferentially be the flange of a continuous distribution on circumference; Regulating control also comprises a recess that compresses fast, and this recess radially opens inwards and is formed on the quick holddown belt of lid, so that hold as the flange that compresses boss fast.

Fast holddown belt promptly compresses the quick holddown belt transverse gage of notched bottoms thickness much smaller than its next door fast compressing this part thickness of recess fast.Because towards the lid end relative thickness height that radially protrudes that compresses recess fast, this thickness preferably radially thickens from the inboard, lateral, so, when the radially outwards distortion of quick holddown belt 33, thereby when opening tension link, holddown belt 33 just can deform that part of of thin thickness fast, promptly distributes the shape of changing at the trench bottom that compresses recess fast, the lid end of perhaps rounding, compress fast recess 32 vertically above connecting bridge integral body deform.

In addition, in the following description, first seal point is like this explanation, and promptly sealing surface (seal groove) is formed on the lid and wedged seal (upper end of stack shell wall) is formed on the container, and this configuration also is right on second seal point (flange) conversely.

In first seal point or two seal points, sealing surface and wedged seal also are right to stack shell or lid in each case conversely.Therefore, for example, can there be V-shaped groove the free upper end at stack shell edge, and the seal boss of lid can engage into it.

Because each seal point leak free possibility is big and because several independent seal points and its mutual mobility are arranged, make container that high sealingly secure be arranged, together do not put the leakproofing material of special good springiness into and risk that stack shell and lid directly are in contact with one another so go out, but it has advantage, promptly is convenient to repeated usage and helps reducing leakproofing material peel off part forms pollution to charging risk.

Because between each seal point enough axial distances are arranged, this distance can be used for regulating diameter and/or length, therefore the sealing possibility of two seal points increases.If have at least a seal point to become several partially sealed points again, even the wedged seal of at this moment partially sealed point does not exist or almost can not move mutually also and can increase the sealing possibility thus.

The following description only relates to lid or the stack shell cross sectional shape of parts separately.Except quick holddown belt, the shape of stack shell perisporium is circular during from top view, polygon, or free shape, and the shape of these points is also consistent with it.

In a preferred embodiment, first seal point comprises the free upper end as the stack shell edge of wedged seal, and its seat of honour the groove that forms on the lid inboard, and preferably transversal surface is a V-arrangement.The slightly larger in diameter of upper end, stack shell edge is in the diameter of lid groove, and therefore, because the axle pressure of lid, pressure cylinder body end, groove side inwards perhaps elastic deformation just takes place.The groove part of lid radially carries out the transition to the cap body part inward, i.e. core carries out the transition to connecting bridge simultaneously on periphery, and this connecting bridge is positioned at the periphery of barrel and stretches to the outside downward again, and is parallel or stretch to barrel obliquely along with the lengthening of distance.

At lower end, connecting bridge carries out the transition to the lid end, and this end cross-sectional is fork-shaped or U-shaped, and one or several free end down, i.e. wedged seal is arranged.

During by tension adjustment, these wedged seaies are pressed onto on last sealing surface with its free end, and the sealing face is the outwards upside of the flange of protrusion of stack shell wall.

The annular sealing surface that sealed wedge is being pressed can extend by along continuous straight runs, therefore vertically strict vertical with container, this vertically often is the axis of symmetry of stack shell and lid, and sealing surface is axle inclination therewith also, declivity from outside to inside radially for example, thereby free end length longitudinally in stack shell edge increases.

As mentioned above, arranged apart on circumference with the quick holddown belt of lid all-in-one-piece, this tension link can make lid and stack shell compress mutually, compresses on two seal points especially.

Compress fast and have one as the groove that compresses recess fast, this recess is side opening and the inclined-plane is arranged inwards, along with from the increase of bottom land to the open end distance, i.e. and the increase of inboard distance from lateral during assembled state, the inside face on this inclined-plane is also cumulative.

Equally, the back side, lid end and the flange back side that turns over from sealing surface, they also tilt with the same manner.

Therefore, the supine back side, lid end is outside declivity from the lining, and the ventricumbent back side of flange is outward-dipping from the lining, and the medial surface that compresses recess fast of their gradient and tightening hoop matches.

Because the mobility of the element of two sealed characteristics of lid one side or stack shell one side has greatly improved two seal point leak free possibilities.

In fact, flange is at the following 10mm-100mm in stack shell edge place, especially 30mm place, and radially outwards protrudes 10mm-50mm, especially 20mm.The ring seal wedge can be arranged on stack shell flange or the lid end, and it highly is 1mm-15mm, especially 3.5mm, and its width is 1mm-10mm, especially 3mm.

C) embodiment

Provide the details of the embodiment of the invention in the accompanying drawing, but lid and stack shell marginal dimension relation is different among each figure, wherein:

Fig. 1: illustrate that lid is in that relaxation state is placed on the stack shell and the situation of big axial tension takes place the lid in tension.

Fig. 2: lid is shown is in relaxation state is placed on little axial tension with the lid in tension on the stack shell situation.

Fig. 3: the third variant of container is shown, and

Fig. 4: the transparent view that closing containers is shown.

When Fig. 1-3 respectively illustrates stack shell 1 and lid 2 and pushes down mutually longitudinally 20, i.e. symmetry axis 10 Profile, component a and c are that lid freely rests the situation on the stack shell, and component b and d are that lid is opened Tight and push down the situation of stack shell. Figure c and d are the sections of fast-holding band portion, and figure a and b are The section of interlude peripheral part, visible Fig. 4.

Fig. 1-the 3rd, the lid cross section, the basic structure of lid end particularly, and stack shell 1 is arranged The basic structure on wall top. See that from longtitudinal view lid and stack shell are arranged symmetrically with symmetry axis 10, It is vertical 20 that symmetry axis 10 may be defined as simultaneously, therefore shown in container seal along circumference, only open The available cap covers sealing in one side of mouth. Therefore, stack shell and lid are axisymmetric.

At first, the inboard of the wall 7 of stack shell 1 is a smooth surface, is convenient to the material filling, pours out the cleaning with container inside.

Backward and radially an annular flange dish 8 is arranged vertically from the free end of stack shell end 1a to the outer round surface of external stack shell 1, this flange is radially outer protrude and its level height below the middle body of lid 2.

Stack shell end 1a, just the wall of flange top is slightly thicker than the following wall of flange, but it is not more than 3mm usually.

In the section, along stack shell end 1a radially, lid 2 has the annular groove 6 of a U-shaped or V-arrangement, and this groove is downward, promptly opens towards stack shell, and this groove of lid 2 usefulness is placed on the end of stack shell 1, forms first seal point 4.

The radially inside part 2C of U-shaped or v-depression carries out the transition to lid middle body 2d, so the level height of this part 2d is lower than groove part 2c.Groove part 2C radially the outside the side or extend vertically, perhaps stretch out with the crimping form by connecting bridge 2b, lid end 2a forms thereunder on the free end of the outside.Its level at axis direction still was lower than lid middle body 2d when this lid end 2a was put well.

The quick holddown belt 33 that adds up to 4 is distributed on the circumference, and every outer face from lid end 2a extends downwards vertically.These several quick holddown belts are used for engaging with flange 8, thereby lid is compressed stack shell at engagement state.

In addition, lid end 2a has wedged seal 11b, the 11c of annular concentric, they down and be positioned at quick holddown belt 33 inboard radially, but in a preferred embodiment, they only do to extend with one heart on part between two quick holddown belts 33, and integrate and become a wedged seal 11b compressing in being with 33 place circumferential sections them fast, the overall width that its radial width preferably equals wedged

seal

11b, 11c adds the interval between the two.

When lid by the time when being pressed onto on the stack shell, at least originally, be preferably in two

different seal points

4,5 and seal simultaneously.

The free end that is pressed in the stack shell end 1a on the groove 6 of lid 2 is represented first seal point 4.Wedged seal 11b, the 11c of

lid end

2a and 11b ' rest on the upper side of stack shell flange 8, and they represent second seal point, and this second seal point is divided into 5a, 5b at partially sealed by mutual

concentric wedged seal

11b, 11c on most of circumference.

Because big especially at quick holddown belt 33 place part upward pressures when wedged seal 11b ' is pressed onto flange 8, it is just enough therefore to go up the mono-wedged seal in this section.At the remainder of circumference then with two concentric wedged seaies so that improve sealingly secure.

As scheming c and d respectively as seen, bring slack-free validity to be by means of compressing fast, have one to be pressed into recess 32 fast on the holddown belt 33 fast, this recess is at side opening and being positioned under the wedged seal 11b ' inwards radially, and the corresponding shape and size of free end cross-sectional plane that extend radially with flange 8 are arranged.Holddown belt does not have chock herein fast, but structural rigidity is big.

Shown in each figure d, stretch outward from each other by the back side 14 formed angles of sealing surface 12b and flange 8 side that compresses recess 32 fast, and upper side is wedged seal 11b ', and downside is the projection in the quick holddown belt 33.Therefore the radially medial surface of projection constitutes oblique guide face 35, when lid is pressed from top to bottom, the radially outermost end of flange 8 is slided along guide face 35, thereby make quick holddown belt 33 that deformation radially outwards take place, snap on the flange 8 up to following projection, flange then is engaged to compressing fast in the recess 32 of quick holddown belt 33.Under this state, two wedged seal 11b ' in this part of the quick holddown belt 33 of the annular sealing surface 12b of level (it is the upper side of flange 8) quilt push down from depressing, and then are wedged

seal

11b and 11c in the circumference other parts.Fast the less free end 34 of holddown belt 33 stretches out downwards from projection, and also because it has enough distances from the wall garden of cylindrical shell 1 post, so its available finger hooks from behind, so that radially be pulled outwardly and make it to unclamp on lid 2.

At this, with other problem relatively, importantly with should be relatively stable on lid end this body structure of 2a of wedged seal 11b, 11c.Groove part 2c is also like this, and it can be bigger two times than the normal thickness of middle body 2d, also can be at the groove back side, and promptly the place of facing up is strengthened with other stable projection 2e.

In contrast to this, lid end 2a in fact can be with respect to groove part 2c motion, because middle transitional section material thickness is little, particularly the transition phase thickness that reaches between connecting bridge 2b and the lid end 2a between groove part 2c and the connecting bridge 2b is little.

Thus, lid end 2a can be curved slightly downwards with respect to connecting bridge, and perhaps entire connection portion can radially push inward with respect to groove part.

In addition, importantly, the end of stack shell 1a, particularly very stable and thicker than all the other walls 7 to free-ended whole section wall from flange 8, therefore, the thick end 1a of tube in fact can radially be out of shape at its free end inwards or outwards, but just can as long as change bigger power.

In like manner, overhanging flange 8 has metastable structure, particularly by there being the rib of radially outward stretching 15 that stability is strengthened on the downside.

Flange 8 preferably has upper side that a level stretches out as sealing surface 12b, and downside 14 is outside in toward declivity.In this part that the quick holddown belt 33 of lid 2 is put, flange 8 is solid at the circumference remainder, and this is owing to there is the rib 15 that radially stretches arranged apart on the circumference to cause.

Can know from Fig. 4 and to see that flange 8 also can be strengthened by vertical stable wedge 21, this wedge outwards protrudes from the wall of stack shell 1, and its upper end carries out the transition to flange 8 then, and freely extend the lower end.Stablizing wedge 21 can only reach such scope radially outward, they can not be hindered with quick holddown belt 33 surround flange 8 outside free ends, and they preferably equidistantly distribute along its circumference, are used for loading onto quick holddown belt 33, but on the circumference in the middle of perhaps being distributed in.

Differing from one another of Fig. 1-3 is that these two distance definitions are as follows owing to lid and the distance A of stack shell or the relation of B.

This two longitudinally 20 distances of measuring be parallel to axis of symmetry 10, be respectively the distance of the free state of stack shell and lid, it is defined as follows: distance A is wedged seal 11b, the 11c of lid end 2a (reaching farthest downwards) and the axial dimension between groove 6 bottoms.

It apart from B the distance between the supine sealing surface 12b of the free end of stack shell end 1a in the stack shell and flange 8.But in all cases, stack shell end free end 1a is pressed on the first seal point place in the groove 6 of lid 2 when tension link 3 tensionings.Second seal point 9 also keeps such sealing on the flange 8.

Though can know from Fig. 1 and to find out that be slightly larger than distance A apart from B, the situation of Fig. 2 antithesis.Relation that these are different and consequent situation can be selected for use according to purpose, or press the production tolerance who occurs when injection moulding is produced owing to lid or stack shell.

If image pattern 1 is such, the lid distance A less than stack shell apart from B, then its groove part 2C is placed on the last free end of stack shell end 1a with the side or the bottom land of groove 6 when freely putting lid, the sealing surface 12b up of the wedged seal 11b that lid end 2a stretches downwards, 11c out of reach flange, this sealing surface is general vertical with axis of symmetry 10.

If because diameter difference, stack shell end 1a does not withstand on the bottom land of the groove 6 of lid 2, but owing to withstand on the side of groove 6 radially inwards or an outside segment distance, then the distance between wedged seal 11b ', the 11b of

lid end

2a, 11c and the flange 8 is outside second seal point 5 even can be bigger.

As shown in Figure 1a, the following free end of concentric annular wedged

seal

11b, 11c is not on same horizontal surface, but since the connecting bridge 2b of the slightly outward-dipping and lid 2 of lid end 2a slightly tilt laterally, so along radial direction the wedged seal 11b of inboard slightly more near sealing surface 12 some.

Fastening by quick holddown belt 33, be that flange 8 inserts compressing fast in the recess 32 of quick holddown belt 33 gradually, holddown belt 33 is owing to its intrinsic elasticity thereby radially mobile inwards as far as possible fast, and quick holddown belt 33 moves downward gradually because flange 8 downsides tilt simultaneously.Therefore, on the one hand radially motion inwards of lid end 2a, on the other hand its simultaneously and/or thereby shift to the sealing surface 12b of flange vertically, therefore to pressing down.This is attributable to the mobility of lid end 2b with respect to the remainder of lid 2, and specifically with respect to the mobility of groove part 2C, special because each parts of lid are less and be positioned at the transition phase 17 of connecting bridge 2b both sides or 18 crooked or distortion around wall thickness.

Only since lid end 2a vertically inwards motion and since transition portion 2b approach and axially parallel from obliquity, wedged seal 11b, at least one of 11c just can reach the sealing surface 12b of flange 8 with its free end (being the pasting board part during wedged seal 11b '), so realized additional seal at this second seal point 5.According to Fig. 1 b, radially press to sealing surface 12b with its whole front, and contact with sealing surface 12b is only wired at the wedged seal 11b of inboard at the wedged seal 11c in the outside.

Because the axial motion of lid end 2a, groove 6 is the contact point of its side specifically, presses to the also stack shell end 1a on first seal point, thereby makes first seal point 4 improve leak tightness.

If the slightly larger in diameter of stack shell end 1a is in the groover rot diameter of groove 6, then stack shell end 1a radially slightly is out of shape inwards at its free end when pressing lid 2 as shown in figure 16.Therefore, the 1a elastic force that is returned to free position in stack shell end has improved the leak tightness of this first seal point 4.

If sealing surface 12b and axis of symmetry 10 out of plumb, but radially from the outside inwardly to the last free-ended distance of stack shell end 1a because inclined position and increasing gradually, shown in the dotted line of Fig. 2 b, contact point may move and radially slightly deformation of end 1a along the bottom land direction simultaneously, and then this axial tension effects is further strengthened.

In contrast, in Fig. 2 a, the distance A of lid 2 greater than stack shell 1 apart from B.When lid 2 is freely put, the sealing surface 2a that lid end 2a will be pressed in flange 8 goes up and because the lid weight relationships, lid end 2a can produce small deformation around the 18 couples of connecting bridge 2b of transition phase, therefore has only radially inside wedged seal 11b to be pressed in that sealing surface 12b goes up and wedged seal 11c in the outside slightly is lifted away from sealing surface.

At first seal point, 4 places, the bottom land of groove 6 does not reach the free end of stack shell end 1a yet, unless the free end of stack shell end 1a mal-alignment bottom land radially, but radially outwards biasing (this is a preferred structure), or biasing inwards, thereby left on the side of groove 6.

By arrangement to the tension link 3 of at high speed holddown belt 33 forms, lid end 2a at first radially moves on sealing surface 12b inwards, and has reached on the sealing surface 12b of flange 8 that two wedged

seal

11b, 11c with lid end 2a are shelved on stack shell 1.

By this displacement in radially, with the equally also radially displacement inwards of connecting bridge 2b of lid end 2a adjacency, so the 1a stack shell end 1a of side one-perhaps that pushes down the radially outside of groove 6 at least in stack shell end also has the radial elastic distortion to the inboard---thereby also realize sealing at this first seal point 4.

Fig. 3 illustrates another may scheme

Though the wall thickness of stack shell end 1a is significantly less than the bottom land width of lid 2 further groove in the way of Fig. 1 and 2, the situation opposite just according to way shown in Figure 3.

At least the free-ended thickness of stack shell end 1a is greatly to reaching in the groove 6 so that reaching bottom land.

When freely putting lid, stack shell end 1a is pressed onto on two sides of groove 6 with its free end, and the wedged seal 11 of lid end 2a does not reach the sealing surface 12b of flange 8 yet.Only put and when engaging shown in Fig. 3 d, lid end 2a just can radially move inward, but the most important thing is that it also moves down on the sealing surface 12b vertically when quick holddown belt 33, wedged

seal

11b, 11c just push down sealing surface 12b now.Because this axial tensioning, the free end of stack shell end 1a also further enters groove 6, and according to the difference of the stability of groove part 2C, groove also can slightly be widened.This is widened and causes making lid middle body 2d that small deformation take place in radially inboard side, forms convex, and makes segmentum laterale and the connecting bridge 2b run-off the straight of groove part 2C in the side of radial outside.

But, fast the joint of holddown belt make that lid end 2a takes place radially inwards displacement and since the lid end that the longitudinal tensile strain of connecting bridge 2b causes with respect to the thin transition phase 17/18 of the mobility of groove part 2c and/or connecting bridge 2b mobility, all can above-mentioned inclination be compensated with respect to adjacent part.

On the transparent view of the container that assembles, its lid 2 is placed on the stack shell 1, holddown belt 33 has engaged fast simultaneously, can see on lid 2 and stable help 22 that this helps and radially extends and in the maximum height of the groove part 2C that is distributed in lid 2 on the circumference with than this groove part between the low middle body 2d.These stability ribs 22 are made of one with lid with holddown belt 33 is the same fast.This also can be extrapolated to the stability ribs 21 of stack shell 1.

In addition, in Fig. 4, the upper part of lid 2 is broken away, at Fig. 1 a, the end 1a of stack shell shown in the 1b can be bearing on the circumference with other stability ribs 23, and the angle of the 12b of sealing surface up of the circumference of stack shell end 1a and flange 8 is radially arranged and be positioned to this rib.These stability ribs 23 with respect to more than the free end of stack shell part 1a and radial extension in addition must be limited, make the full engagement of its unlikely obstruction lid 2, comprise the joint of quick holddown belt 33.

List of reference numerals

1 stack shell 12a, b sealing surface

13 back sides, 1a stack shell end

2 lids, 14 back sides

2a lid end 15 ribs

16 ends of 2b connecting bridge

2C groove part 17 transition phases

2d middle body 18 transition phases

The 2e boss

3a, 3b tension link 19 tensioning grooves

4 first seal points 20 are vertical

5 second seal points, 21,22,23 stability ribs

The partially sealed point 31 of 5a, 5b compresses boss fast

6 annular grooves 32 compress recess fast

7 walls, 33 quick holddown belts

8 flanges, 34 free ends

9 35 spigot surfaces

10 axiss of symmetry

11a, b, c wedged seal A=lid distance

B=stack shell distance

Claims

1, container comprises stack shell (1) and lid (2) and tension link, and this tension link can is characterized in that lid (2) and closely tension of stack shell (1):

-lid (2), at least under tension, at least one continuous first seal point (4), compress stack shell (1), this first seal point ringwise and around the axis of symmetry (10) of container, tension link (3) is axially separated by a distance with first seal point (4).

2, container according to claim 1 is characterized in that:

Tension link (3) is made of one with lid (2).

3, according to the described container of top arbitrary claim, it is characterized in that:

Tension link (3) is by many tension adjustment part (3a, 3b, 3c ...) form, they are spaced from each other and are distributed on the circumference.

4, according to the described container of top arbitrary claim, it is characterized in that:

Fast compressing device comprises that one radially protrudes, and what outwards protrude specifically compresses boss (31) and fast a compress recess (32) crew-served with it fast, and the lateral layout one-tenth of this recess can pull to lid (2) stack shell (1) vertically.

5, according to the described container of top arbitrary claim, it is characterized in that:

Compress fast on the periphery that boss (31) is arranged in stack shell (1) and depart from certain distance with the free end of stack shell (1), stack shell in the middle of being positioned at freely stretches out the size of end (1a) to be made and can elastic deformation take place by the lid (2) of tension, specifically elastic deformation can only take place radially.

6, according to the described container of top arbitrary claim, it is characterized in that:

Compressing boss (31) fast is a flange (8), and this flange is formed on the face of cylinder continuously, and the form of (32) the at high speed holddown belt (33) that compresses recess fast separately is distributed on the face of cylinder.

7, according to the described container of top arbitrary claim, it is characterized in that:

Many points that the radially outside flange (8) that protrudes distributes on the face of cylinder, at least in the quick compressing structure place of holddown belt (33) stability ribs (21) reinforcement fast, this stability ribs is outwards protrusion and longitudinally (2) radially, the direction that is the axis of symmetry (10) of container is extended, and carries out the transition to flange (8) and synthesize one.

8, according to the described container of top arbitrary claim, it is characterized in that:

Second seal point is continuous seal point (5) specifically, is distributed on the face of cylinder and spaced apart with first seal point (4) around the axis of symmetry (10) of container.

9, according to the described container of top arbitrary claim, it is characterized in that: in seal point (4) or (5), or at partially sealed point (5a, 5b), wedged seal separately (11) is pressed to sealing surface (12) with its outside face, the contact of generation line, and can be mobile along this sealing surface (12) by the tension force of tension link.

10, according to the described container of top arbitrary claim, it is characterized in that:

On first seal point (4), wedged seal (11a) is the free end of stack shell end (1a), and sealing surface (12a) is that a cross-sectional plane is the annular groove (6) of V-arrangement and is positioned at lid (2) downside.

11, according to the described container of top arbitrary claim, it is characterized in that:

Stack shell (1) and lid (2) are all only used a kind of material, are plastics specifically, particularly same plastics.

12, according to the described container of top arbitrary claim, it is characterized in that:

Seal point (4) and/or (5) are divided into several partially sealed points (5a, 5b).

13, according to the described container of top arbitrary claim, it is characterized in that:

Locate at seal point (5), sealing surface (12) is the ring plain vertical with axis of symmetry (10) and the outside that is arranged in the wall (7) of stack shell (1), and be positioned on the surface layer of radially outside flange (8), and wedged seal (10b) is an annular seal wedge that is made of one with external lid end (2a).

14, container according to claim 13 is characterized in that:

The lid end comprises two wedged seaies that radially separate (11b, 11c), they are located concentrically about one another and are depressed on the same sealing surface (12b) at tensioning state, the wedged seal of arranged concentric (11b, 11c) is merged into a wedged seal (11b ') in the ratio of quick holddown belt (33), and its radial dimension is wedged seal (11b) and radical length sum (11c) in the circumferential segment between the quick holddown belt (33) at least.

15, according to the described container of top arbitrary claim, it is characterized in that:

At least (11b, 11c) in the connecting bridge between, the structure of lid end (2a) is that tensioning so stable so that tension link can not make the annular of lid end (2a) that big deviation is arranged at wedged seal.

16, according to the described container of top arbitrary claim, it is characterized in that:

Sealing surface (12b) is vertical with axis of symmetry (10).

17, according to the described container of top arbitrary claim, it is characterized in that:

Sealing surface (12b) particularly faces the sealing surface (12b) of stack shell (1) open end, and is radially downward-sloping to the bottom of interior side direction stack shell (1) from the outside with acute angle.

18, according to the described container of top arbitrary claim, it is characterized in that:

Lid end (2a) is done tapered back to the back side (14) of lid according to the medial surface shape of the annular groove (3a) of tightening hoop (3) back to the back side (13) and the flange (8) of flange (8).

19, according to the described container of top arbitrary claim, it is characterized in that:

The taper back side of the flange (8) of stack shell (1) has at least the rib (15) of flange (8) to be distributed on the face of cylinder, and this rib (15) is not on the circumferential position of putting quick holddown belt (33).

20, according to the described container of top arbitrary claim, it is characterized in that:

Fast holddown belt (33) has a free end that stretches out downwards, with the periphery of stack shell (1) from a distance so that available finger is arrested below this free end.

21, according to the described container of top arbitrary claim, it is characterized in that:

Fast holddown belt (33) its radially inwards a side have one to compress recess (32) fast, this compresses the thickness of the material thickness of recess (32) bottom less than its both sides fast.

22, according to the described container of top arbitrary claim, it is characterized in that:

The cross-sectional plane of lid (2) is radially outside the inside, and it comprises a tabular middle body (2d); One groove part (2c), one-tenth U-shaped protruding upward vertically; The connecting bridge of one annular (2b) is connected on the radially overhanging free end of above-mentioned groove part; And a lid end (2a), being connected on above-mentioned connecting bridge, they make integral body, and it is characterized in that, and the wall ratio remainder from connecting bridge (2b) to the transition phase of at least one adjacent part is thin.

23, according to the described container of top arbitrary claim, it is characterized in that:

Lid end (2a) is positioned at connecting bridge (2b) outside radially.

24, according to the described container of top arbitrary claim, it is characterized in that:

Connecting bridge (2b) extends vertically.

25, according to the described container of top arbitrary claim, it is characterized in that:

The free end of stack shell end (1a) is the wedged seal of first seal point (4), it to the sealing surface (12b) of second seal point (5) along the axial distance of stack shell (B) be slightly larger than lid under free state from the bottom land of annular groove (6) to wedged seal (11) or (11b) and distance (A) (11c).

26, according to the described container of top arbitrary claim, it is characterized in that:

The diameter of the annular groove (6) of the lid (2) that the diameter of the stack shell (1) that stack shell end (1a) free end each point records and each center-point of bottom portion of groove record has deviation, the stack shell diameter is more preferably greater than the diameter of annular groove (6), and the outer lateral side toilet seat of annular groove drops on the stack shell end (1a) when not adding tension force ground and lid is placed on stack shell (1) and goes up like this.

27, according to the described container of top arbitrary claim, it is characterized in that:

The wall thickness of stack shell (1) is located bigger at stack shell end (1a), be that wall thickness from flange (8) to that section of free end is greater than the wall thickness of flange (8) to stack shell bottom (16) that section specifically.

28, according to the described container of top arbitrary claim, it is characterized in that:

The lateral surface (6a) of annular groove (6) and the intermediate slope angle between the medial surface (6b) are 5-50 °, particularly 10-30 °.

29, according to the described container of top arbitrary claim, it is characterized in that: under the free state from flange (8) upper side to stack shell end (1a) free-ended stack shell distance (B), less than the bottom land of lid annular groove (6) to quick holddown belt (33) compress recess (32) fast radially towards the distance (A) of upper side, thereby also less than to that part of wedged seal (11b) between the quick holddown belt (33) or (11c) free-ended distance.