CN1295526A

CN1295526A - Paint container liner system

Info

Publication number: CN1295526A
Application number: CN 99804566
Authority: CN
Inventors: 罗伯特·奥布赖恩
Original assignee: Dripless Inc
Current assignee: Dripless Inc
Priority date: 1998-03-30
Filing date: 1999-03-29
Publication date: 2001-05-16
Anticipated expiration: 2019-03-29
Also published as: AU3455899A; CN1096965C; WO1999050153A1

Abstract

A paint container liner system (102) including disposable liners and an open container (100) for receiving at least one of the disposable liners (102), the liner (102) being sized and configured to fit into the inside of the container and around the rim of the container, the liners (102) being maintained in position in the container by a suction generated during installation in one embodiment and by a noncuring adhesive interposed between the liner and container in another embodiment, the liners (102) also being stretched around the rim of the container and configured with a rounded bottom to retain the liner in place during use, the system also including a container cap (132) with a slot (146) for supporting a paint brush during periods of nonuse.

Description

Paint container liner system

Background technology

The application is the part continuation application of the patent application that application number is 08/660525, title is identical of submission on June 7th, 1996.

The present invention relates to a kind of container for paint and liner system, particularly relate to a kind of disposable lining, thereby this lining is flexible this lining that makes can adapt to the shape of standard paint can, and can in use lining be remained on its position under the situation of the in-profile that does not need accurately to form paint can.

People have developed the various improved material and facilities that are used for swabbing, to be easy to finish this inevitable relatively dirtier work.This wherein has only several improvement to relate to influence to environment, for example resembles to reduce the quantity that coating is discharged into airborne solvent when dry.When people recognize that more even modern water based paint also has toxicity, just need improve, with satisfied more strict environmental requirement to the waste water that cleaning process produced and the discharging of solvent.This liner system proposed by the invention will avoid making water or solvent to come the cleaning dope bucket.By reducing because clean the quantity of difficult plastic paint bucket of having to throw away, liner system of the present invention also can avoid using landfill.

People obviously need a kind of lining of using and can at will abandoning of being easy to.Yet, although the needs to lining are conspicuous, simple lining (is very economical, for example resemble polyethylene plastic bag, it can batch manufacturing, thereby and be beneficial to transportation and store for flat shape) use but have a lot of difficulties because lining may change its optimum position in paint can.Paint brush just is not immersed in the coating in the container simply, but also extruding and moving against wall of a container so that the coating of aequum is distributed on the paint brush, the possibility of result can mobile lining.The state that lining is remained on the shape that adapts to paint can will increase the final value of lining, because this maintenance has increased the practicality of lining.The lining of combining during use and the function of paint can with do not have the paint can of lining similar, but its advantage is the cleaning and the removing that can realize remaining coating, thereby make paint can to reuse at once.

In one embodiment of the invention, one group of lining that is nested in together is installed in the paint can, thereby can use and abandon each lining one by one.These characteristics make liner system of the present invention conveniently use and not destroy ecology environment.Technical scheme

Paint can of the present invention and liner system are designed for and utilize the non-infiltration type lining of a kind of disposable coating lining to be set for a container, thereby the lining that has remaining coating waste material can be abandoned and utilize this container again by resetting a clean lining.Lining can be used for various containers and for example resemble paint can or coating dish.The successful use of disposable lining system depends in part on the stability of the comfort feature and the lining of mounting bush system.The whole bag of tricks of stablizing one or more lining in addition in container is also described below.

In addition, for lining being positioned at around the periphery of vessel port, lining is connected to the outside of container perimeter by one of several means.For columniform paint can, preferably by being the shape with substantial rectangular bag with bushing design, its opening can stretch and tightly be secured on the edge of paint can for this.Since the mouth of bag can stretch a little and be installed on the edge of paint can, make bag and the satisfied engagement in the outside of paint can periphery on the one hand thereby bag preferably has certain elasticity, thereby the remainder of giving on the one hand in addition bag provides enough peripheries that bag oneself is abutted on the inwall of container.A kind of rectangular configuration and have simple plastic bag on the bottom periphery that sufficient size is coupled to container and just can be used as lining and use.

Yet, being nested in mutually together and being installed in groups among the embodiment in the paint can at a plurality of linings, rectangular bag is arranged the bottom comer that circle was installed or had on ground along radially intermeshing, to prevent that rectangular bag is in the bight interlocking.

Have been found that special mounted apparatus of correct use for example resembles a plastic bushing or one group of lining can be press fitted in the paint can, all air are discharged between lining and paint can basically simultaneously.Because lack air, bag or a plurality of bag can be located and be resisted against in the paint can, and also can hold it on its position in use.

As preferred mode, mounted apparatus is a barrel-shaped plug, and the side dimension of this barrel-shaped plug inside dimensions with paint can basically is identical.This barrel-shaped plug or plug bucket preferably have for example foam of a deformable outside face, to adapt to the folding of bag and to overlap.Because the radical function of plug bucket is that the elasticity lining is placed in the paint can, the outside face of plug bucket must and can only be determined by the shape of inside face that needs are provided with the paint can of lining.Therefore the plug bucket does not resemble and is extended with shackle or strengthens marginal texture from its outside the standard paint can.On the contrary, the additional strengthening of plug bucket is positioned at the inboard, edge.In a preferred embodiment, the lid of plug bucket is strengthened the edge engagement with the inside of plug bucket, thereby can not form obstacle in the outside of plug bucket.This lid also has a dispensing orifice of being convenient to store and take out the elasticity lining.The elasticity lining can be sold respectively with the plug bucket.

In installation process, at first the elasticity lining is placed into the outside of plug bucket.The second, the plug bucket that is positioned at lining is pushed into paint can, thereby with the air emptying between lining and the paint can wall.The 3rd, the open end of elasticity lining is stretched on the edge of paint can, thereby forms a sealing, enter once more between the inwall of lining and paint can to prevent air.The 4th, will fill in bucket and take out, just can use the paint can of lining has been set.

This suction method that lining is fixed on the container can have maker to finish by a plurality of linings that are nested in mutually together that are positioned at container are provided.When a plurality of lining of prepackage, lining at first is installed on the mandrel.In order to prevent the bight interlocking of rectangle lining, the position of each lining is mutually along the radially certain distance separately of mandrel.The mandrel of mounting bush is inserted in the paint can, and the open top end of lining is stretched on the top of paint can, and preferably begins to stretch from outermost lining.In this embodiment, a plurality of linings that are installed in the paint can remain on its position by a simple cardboard plug before use.This cardboard plug prevents that the lining of intussusception is fluffy mutually before lining is sold and used.Before using, the taking-up of cardboard plug is thrown away.

This liner system preferably is incorporated into enforcement usefulness with a stretchable bucket cap, thus the provisional coating drying that prevents in the paint can.Lining and paint can provide with the form of tool outfit with a paint can.In addition, the lining that is provided for replacing, thus keep the serviceability of tool outfit and prolong paint can abandoning the life-span before.

The lining of prepackage is the order long-term use always, till the lining that provides up to using up.The user can adopt above-mentioned manual installation system.In addition, the user can buy the paint can that another one has been installed a plurality of linings.

Accompanying drawing is described

Fig. 1 is an exploded perspective view of paint can liner system, and this liner system comprises the paint can that can utilize again and the disposable lining of a routine;

Fig. 2 is the block diagram that paint can and lining among Fig. 1 of lining have been installed, and part is analysed and observe;

Fig. 3 is the lateral plan of another one embodiment that is used for a disposable lining of container for paint;

Fig. 4 A is mounted in the lateral plan of a plurality of linings on the expandable mandrel;

Fig. 4 B is the backplan of a plurality of linings of the mandrel among Fig. 4 A;

Fig. 5 is the block diagram of the another one embodiment of paint can liner system, and part is analysed and observe, and this liner system comprises the recycling paint can and a cover disposable lining of a routine;

Fig. 6 is the lateral plan of a cover replaceability lining that is used for the paint can liner system of Fig. 5;

Fig. 7 is the backplan of elasticity bucket cap that is used for the paint can liner system of Fig. 1 and 5; And

Fig. 8 is mounted in the block diagram of the elasticity bucket cap shown in Figure 7 on the paint can among Fig. 5.

Embodiment

1 exploded drawings is with reference to the accompanying drawings expressed three major parts of an embodiment of liner system 10.Liner system 10 among Fig. 1 is preferably sold with the form of tool outfit.Usually, kit comprises the plastic paint bucket 12 of a standard, a press-fit plug bucket 14 and an a collection of lining 16.A shown lining 16 surrounds plug bucket 14, as shown in Figure 1.Lining 16 is made by flexible plastic, and thickness is approximately 7 mils, and as shown in Figure 3, this lining 16 is essentially rectangle, and has a leak free bottom 18 and have the open top 20 of certain profile.Arc preferably is cut into forming a level and smooth relatively periphery 22 with lug 23 in top 20, thereby assists top 20 chuckings when a flat bag shape lining is installed on the cylindrical plugs bucket 14, as shown in Figure 1, is stretched to then on the paint can 12, as shown in Figure 2.

With reference to the section-drawing of the plug bucket 14 among the figure 2, this plug bucket 14 has an outside face 24, and this outside face 24 can cooperate with the inside face 26 of paint can 12.As preferred mode, plug bucket 14 has made of paper one by one or the inboard reinforcement housing 28 of plastics, has an outside froth bed 30 and a thicker foam bottom 32 around this housing 28.

In lining is installed to paint can and air when discharging between the inside face 26 of lining 16 and paint can 12, the folding and gauffer that lining produces can be eliminated in the deformable froth bed 30 in housing 28 outsides and foam bottom 32.In installation process, below preferred step guarantee that the plastic bushing 16 of non-infiltration can be fixed on the inside face 26 of paint can 12 by suction.

At first, on the outside face 24 that lining is installed to plug bucket 14, the paint can 12 of sky is placed upside down in one plane.Plug bucket 14 then is placed upside down on the bottom 34 of the paint can 12 that overturns, and this bottom 34 provides one to support easily for plug bucket 14.Plug bucket 14 has a recessed lid 36, and this recessed lid 36 is located on the bottom 34 of paint can 12.Lining 16 put upside down on the outside face that is stretched to plug bucket 14 then up to bottom 18 snug fits of lining 16 leak frees to the bottom 32 of plug bucket 14.

The second, the paint can 12 of sky turned just put, the plug bucket 14 that then outside is had lining 16 is put into the inside of paint can 12 downwards, as shown in Figure 1.Plug bucket 14 is extruded to the inside of paint can, simultaneously with all air exhaustion between lining and the paint can.

The 3rd, the lug easily 23 that utilizes lining 16 tops draws back the periphery 22 of lining and stretches downwards, covers on the top outer edge 38 of paint can 12.The periphery that the size of lining 16 is set to its open end is slightly larger than the inside top of plug bucket 14, but less than the top outer edge 38 at 39 places, open top end of paint can 12.

Like this, just around the outer periphery 38 of paint can 12, form a sealing closely, thereby when taking out plug barrels 14, can prevent that air admission is between lining 16 and the paint can 12.

At last, utilize easily handle hole 40 will fill in bucket 14 and take out, the people can catch handle hole 40 during taking-up.Separate in order to fill in the lining 16 of bucket 14 after install, the foam bottom 32 and the housing 28 that pass plug bucket 14 are provided with an air release aperture 42.By getting rid of the air between lining 16 and paint can 12 inside faces, lining 16 tightly is fixed on the inside face of paint can.

Shown in the section-drawing of the plug bucket 14 among Fig. 2, recessed lid 36 is located on the epipharynx 44, and handle hole 40 forms on a dehiscence part (not shown) of recessed lid 36.

In tool outfit, a collection of lining 16 of plug bucket 14 splendid attires, when using a lining, this lining 16 can take out separately by handle hole.Plug bucket 14 is enclosed within the paint can 12, thereby sells and be equipped with service instructions as a tool bag.The size of this good paint can be one, two or five gallon bottle, and is furnished with the lining that matches with paint can.And, although the plastic paint bucket of the routine shown in the figure has shackle 46 and stiffening band 48, in fact in tool outfit, can use any routine or paint can commonly used as the basic element of character, can also have the parts that other has suitable dimension and shape simultaneously.

Have the paint can of lining one of use after, suggestion allows residual coating turn back in the initial container for paint; Before removing and abandoning lining, should allow residual coating drying.When exposing in water, the lining of abandoning in this way, will can not cause undried coating to come off.As another mode, lining can take off and keeps its opening open mode till remaining coating drying before correctly abandoning from paint can 12.It should be noted that because lining can be stretched on the top of paint can therefore normally using brush and too much coating is being backed in the process of paint can, the top of paint can be protected.After taking out lining, thereby paint can is totally to get ready for swabbing work next time.

With reference now to Figure 4 and 5,, the another one embodiment of liner system is described.This liner system comprises the container for paint of conventional plastic paint bucket 100 forms, and this paint can 100 has an inside face 101 and series installation and be nested in together the non-infiltration type lining 102 of coating in paint can 100.Paint can 100 has an open top 104, and this open top 104 has outstanding lip 106, and at the outer upper edge around 112 outstanding lip 106 have one or more rib 108,110, as cutting open shown in the part among Fig. 5.The lining 102 that is nested in together is stretched on outstanding lip 106 and the top rib 108 at originating firm.Because lining 102 is installed on the top edge 112 and can finishes mechanically, so the number of one group of lining can maximize.When every group of lining was 24, thickness was that the lining serviceability of 7～8 mils is good.

A kind of planform of lining 102 as shown in Figure 6.Lining 102 among Fig. 6 has an open top 114 and closed bottom 116.When setting level lining as shown in Figure 6, the open top 114 of lining 102 has a bending, recessed middle body 118 and the end ear 120 of a pair of protuberance.When lining is installed on the paint can 100, as shown in Figure 5, crooked middle body 118 help with open top 114 be positioned at equably basically outer upper edge 112 around.Particularly when when manually replacing lining as mentioned above, the end ear 120 that faces one another is used to realize the installation and the removing of lining, holds ear 120 parts near handle shackle 122 as shown in the figure.Factory's prepackage lining can include only a single end ear or a sheet, is convenient to take out this lining after using at each lining.

When mounting bush in factory, shown in Fig. 4 A and B,, installing on the mandrel 72 lining 70 by radially being staggered, can utilize cheap rectangle lining.Preferential employing can be along the mandrel of radial expansion because with lining on the position that is staggered that radially is installed on the mandrel time mandrel can expand subsequently.Each lining and fwd lining 15 to 20 degree that stagger mutually, thus make that bight 73 is separated from each other and can not be interlocked.After paint can uses, take out the most inboard lining and can not make that remaining lining moves.Mandrel 72 comprises radially movable lath 74, and these laths expand after mandrel and the lining of being installed are inserted in the paint can.From outermost lining, according to sequencing each lining is pulled down and to reach on the paint can edge 112, thereby open top 114 is stretched to outstanding lip 106 and at least on the rib 108 of top side, forms a hermetically-sealed construction, prevent that air from entering wherein again.After being fixed to lining on the paint can, mandrel shrinks and takes out, thereby lining is positioned on the inwall and bottom of paint can.

Being staggered of lining 70 helps end ear or sheet 76 are separated, thereby makes operation be more prone to.

Lining is made by polymer thin-film material, and this material has enough elasticity, thereby can stretch when mounted and be clamped on the top of paint can.Lining is preferably by having side seal rather than made by tubular blank, adapting to the inside of paint can, and can remain on the outside of periphery by elasticity.Conversely, this remains on lining on the inside face of paint can.

Install a sleeve bushing when making and assemble after, the lining of installation remains on the interior position of its bucket by a cardboard plug 124, and this cardboard plug 124 can be press fitted into downwards on the bottom 126 of paint can 100.Cardboard plug 124 remains on lining on its position, prevents in a period of time of before sales owing to escape of air causes lining " fluffy " gradually.Before using lining, cardboard plug 124 can be taken out, use lining then one by one till using up.

A sleeve bushing 102 that is nested in together as shown in Figure 6 has rounded corners 128 at closed bottom 116 places.Interlocking takes place in the bight that this rounded corners can prevent to be nested in lining together, because the taking-up of a lining of making dirty will make remaining lining displacement during interlocking.The end ear 120 by provide one easily sheet realize taking off single lining described top that is used for optionally being clamped on the most inboard lining from paint can.

The lining of intussusception provides a kind of mode easily of supplying and storing quite a large amount of linings in the original paint can.But the thickness of preferred lining is big more, on the just difficult more edge that lining is stretched to paint can.Therefore, replace the lining of usefulness or provide single lining for supplying paint can again according to reference mode shown in Figure 2, perhaps comprising that 4 or 5 forms that are nested in the group of lining together provide, thereby these linings can be installed on the paint can of a sky with the form of group.In this case, a plurality of groups can be stored in the plug bucket 14 and a little solder joint 130 by as shown in Figure 6 prevents that lining is disconnected from each other when storing, and this solder joint 130 is secured together one group of lining of replacing usefulness.The initial sleeve assembly that the producer makes does not comprise solder joint 130.

With reference to the accompanying drawings 7 and 8, liner system preferably includes a bucket cap 132.Bucket cap 132 is made by elasticity clear plastic film 134, observes the inner case of paint can 12 when this barrel cap allows to install.Film 134 has a periphery 136, and the identical mode of plastic cement bathing cap that this periphery 136 is used with the shower of routine the time is tied and linked on the cyclic spring band 138.Elastic webbing 138 has two and stretches out ring 140, and these two are stretched out ring and are connected on the elastic webbing 138 by eta patch 142.Ring 140 is connected on the paint can shackle 122 by the toe-in (not shown).A bucket cap 132 can be installed on the paint can during fabrication in this way, and square rafter cap 132 scrolls up and store along the side of top edge 112, when needs use.

Square rafter cap 132 has a central eta patch 144 with a keyhole slot 146.Square rafter cap 132 is used for spending the night not at a paint can that has lining and splendid attire coating, and the time spent covers it.Square rafter cap 132 prevents to form a film on coating when not using.And keyhole slot allows paint brush 148 to be supported on the paint can 12 that is covered, as shown in phantom in Figure 8.Before on the top that bucket cap 132 is stretched to paint can 12, the handle 150 of paint brush 148 upwards penetrates in the keyhole slot 146, this keyhole slot is blocked handle by friction, thereby permission is regulated and is hanging on the coating 152 to paint brush 148 or enters on the height of coating 152, shown in the dotted line among Fig. 8.In this way, coating too much on the paint brush can drip, and can not cause coating to harden on the coating bristle.As another mode, in the paint can of large-size, keyhole slot can be held a jetting gun nozzle or rotor handle.Be appreciated that barrel cap can not use when having liner system, but as preferred and favourable mode, the liner system of bucket cap in tool outfit uses.Large-sized barrel of cap is easy to hold the lining of one group of prepackage.Bucket cap 132 has been realized cleaning and abandon the minimized target of remaining coating after each swabbing process, and therefore makes liner system and tool outfit help ecology environment.

Although the front has described the present invention in detail for comprehensively disclosing purpose of the present invention, those of ordinary skill in the art be it is evident that, in above-mentioned detailed description, various changes be can make and spirit of the present invention and essence do not departed from.

Claims

Modification according to the 19th of treaty

1. paint can and liner system comprise:

A paint can, this paint can have the open top of an inside face and a band periphery;

A non-infiltration lining, this lining can be installed in the paint can with elastomeric extensible materials manufacturing, and can be by the air between the inside face of lining and paint can is extruded and lining is fixed on the inside face of paint can; And

Extrusion equipment, when being installed in the paint can, be used for getting rid of the air between lining and the paint can inside face to lining, wherein, lining has the open end of a band periphery, when lining is installed in the paint can, the periphery of lining can be stretched open and pull down on the periphery that reaches paint can, the elasticity of material maintains lining and forms a sealing, thereby prevents that air from entering between the inside face of lining and paint can once more.

2. paint can according to claim 1 and liner system wherein, by in installation process a plurality of linings being nested in together, can be installed a plurality of linings in bucket in bucket.

3. paint can according to claim 1 and liner system, wherein, described extrusion equipment comprises a plug, this plug has the outside face that an inside face with paint can matches.

4. paint can according to claim 3 and liner system, wherein, lining can be installed on the outside face of plug, and plug can be inserted in the paint can when mounted.

5. paint can according to claim 4 and liner system, wherein, plug comprises a plug bucket, this plug bucket has a top and a lid, covers to have a handle hole, wherein, in this plug bucket a plurality of linings is housed.

6. paint can according to claim 1 and liner system, wherein, the periphery of paint can is protruding from the open top of paint can, and lining is made by extensible plastics, its size is fit to be stretched to when mounted on the described periphery.

7. container for paint and liner system comprise:

A container for paint, this container for paint have an inside face and comprise the open top of a periphery; A non-infiltration lining, this lining is installed on the inside face of container for paint; And adhering device, be used for dividually lining being fixed to the inside face of container for paint.

8. container for paint according to claim 7 and liner system, wherein, connecting device comprises a kind of non-adhesive agent that solidifies.

9. paint container liner system comprises:

A container for paint, it comprises that one has the bottom of inside face, a sidewall and an open top edge that is used to receive coating that has inside face and be connected to described bottom; Wherein, a part of bottom interior surface partial sum side wall inner surfaces comprises that is used for a non-mating surfaces that solidifies adhesive agent;

Non-infiltration lining, its size and structure are fit to inside face, inside surface of side wall and the edge of covering container bottom;

The non-adhesive agent that solidifies, this adhesive agent are placed between the mating surfaces of lining and described container; Wherein, lining can be bonded on the side wall inner surfaces and bottom interior surface of container dividually; The structure that the container of lining has been installed is fit to splendid attire coating to be used, and after using container for paint, the structure of lining is fit to take off from container abandon, and the structure of container is fit to utilize with a new lining again.

10. paint container liner system according to claim 9 also comprises adhering device, is used for lining is bonded to container.

11. paint container liner system according to claim 9, wherein, the mating surfaces of container is coated with a kind of non-adhesive agent that solidifies.

12. paint can and liner system comprise:

A paint can has the open top of an inside face and a band periphery; With at least one non-infiltration lining, be installed in the paint can, by the inside face of paint can, got rid of the air between the inside face of this impermeability lining and paint can; Lining is made by film like, extensible materials, has elasticity during stretching; Lining has an open top and closed bottom, and its size is set to cooperate basically the inside face of paint can; Lining has a periphery in its open top, and this top is slightly less than periphery; Lining is stretched on the periphery of paint can by stretching out lagging material, the periphery of lining flexibly is clamped on the periphery of paint can, by seal cartridge and paint can, prevent that air admission is between lining and the paint can inside face and lining is remained on the inside face of paint can.

13. paint can according to claim 12 and liner system, wherein, the lining of a plurality of mutual intussusceptions is installed in the described paint can.

14. paint can according to claim 13 and liner system, wherein, lining is shaped as rectangle, is installed in the paint can along radially intermeshing with arranging, and the taking-up of a lining can not make remaining lining be shifted.

15. paint can according to claim 14 and liner system, wherein, the mode that lining is at first arranged to intermesh is installed on the mandrel, by mandrel and lining being inserted paint can and lining being installed on the paint can subsequently again.

16. paint can according to claim 15 and liner system, wherein, lining has the bottom comer of a circle, is used to prevent that the lining of mutual intussusception when taking out a lining is interlocked.

17. paint can according to claim 14 and liner system wherein, have the lug that faces one another at the periphery of lining open top, so that realize the installation and the taking-up of lining.

18. paint can according to claim 14 and liner system also comprise the lining of replacing usefulness.

19. paint can according to claim 18 and liner system, wherein, the lining of replacing usefulness is nested in together mutually with the form of organizing, and has the device that each lining in the group is kept together.

Claims

1. paint can and liner system comprise:

A non-infiltration lining, this lining can be installed in the paint can, and can be by the air between the inside face of lining and paint can is extruded and lining is fixed on the inside face of paint can; And

Extrusion equipment is used for getting rid of the air between lining and the paint can inside face to lining when being installed in the paint can.

2. paint can according to claim 1 and liner system, wherein, lining has an open end that comprises extensible periphery, and the extensible periphery of lining can stretch after in lining is installed to paint can and pull down on the periphery that reaches paint can, thereby prevents that air from entering once more.

7. container for paint and liner system comprise:

9. paint container liner system comprises:

12. paint can and liner system comprise:

A paint can has the open top of an inside face and a band periphery; With at least one non-infiltration lining, be installed in the paint can, by the inside face of paint can; Lining is made by film like, extensible materials, has elasticity during stretching; Lining has an open top and closed bottom, and its size is set to cooperate basically the inside face of paint can; Lining has a periphery in its open top, and this top is slightly less than periphery; Lining can be stretched on the periphery of paint can, and the periphery of lining can flexibly be clamped on the periphery of paint can, and lining is remained on the inside face of paint can.

20. paint can according to claim 14 and liner system, also comprise: a coating bung, this coating bung comprises a bucket cap, this barrel cap comprises a membraneous material, its periphery bundle is linked on the elastic webbing, and the size of elastic webbing can be stretched on the periphery of open top of paint can.

21. in a paint can system, open top and a ccasual coating bung with a band periphery, this coating bung comprises an extensible bucket cap, and this barrel cap comprises flexible film's material, its periphery bundle is linked on the elastic webbing, and the size of elastic webbing is fit to be stretched on the periphery of open top of paint can.

22. coating bung according to claim 21, wherein, flexible film's material is transparent, thereby allows to observe the inside of paint can.

23. coating bung according to claim 21, wherein, the middle body of flexible film's material of bucket cap has a groove, swabbing device of engagement when its size is adapted at a barrel cap and is installed on the paint can.

24. paint can according to claim 23, wherein, the middle body of membraneous material has an eta patch, and wherein groove is positioned on the eta patch.

25. paint can according to claim 21, wherein, paint can has a shackle that is used to grip paint can, and described bucket cap has the device that is connected on this shackle.

26. paint can according to claim 16 and liner system, wherein, each lining that is nested in mutually together has at least one lug, and this lug is positioned on the periphery of open top, is convenient to each lining and takes out after use.

27. paint can according to claim 14 and liner system, wherein, lining is made by thin thin polymer film.

28. paint can according to claim 15 and liner system, wherein, the inside face of paint can comprises a bottom, this system has a removable retainer device, this device is installed in the lining of mutual intussusception and is positioned at the bottom of lining, be used for lining is remained on the bottom of paint can, thereby before use lining remained on the inside face of paint can.

29. paint can according to claim 14 and liner system, wherein, the inside face of paint can comprises an inwall and the bottom with bottom margin; When the periphery of open top was stretched on the periphery of paint can, the periphery of the bottom of the size of lining and described inside face and paint can matched.

30. paint can and liner system comprise:

A paint can has the open top of an inside face and a band periphery; With a plurality ofly be nested in mutually together, the extensible lining of the non-infiltration type of coating, these linings are contained in the paint can in advance, lean against on the inside face of paint can; Each all has an open top and a closed bottom described lining, and its size matches with the inside face of paint can basically; Wherein, each lining is made by the film like extensible materials, has elasticity during stretching; The open top of described lining has a periphery, and this open top is slightly less than described periphery, and lining can be stretched on the periphery of paint can, removes the air between the inside face of lining and paint can simultaneously; The periphery of lining flexibly is clamped on the periphery of paint can, thereby forms a sealing, lining is being remained on the inside face of paint can behind the mounting bush.

31. paint can according to claim 30 and liner system, wherein, the lining of each mutual intussusception has a sheet at the periphery place of open top, is convenient to each lining time spent taking-up.

32. paint can according to claim 30 and liner system, wherein, the inside face of paint can comprises a bottom, this system has a removable retainer device, this device is installed to the bush inside of mutual intussusception and is positioned at the bottom of lining, be used for lining is remained on the bottom of paint can, thereby before use lining remained on the inside face of paint can.

33. paint can according to claim 32 and liner system, wherein, the retainer device comprises a cardboard plug.

34. paint can according to claim 33 and liner system, wherein, the cardboard plug is the dish shape.

35. paint can according to claim 29 and liner system, the inside face of paint can comprise an inwall and the bottom with bottom margin; Wherein, when the periphery of open top was stretched on the periphery of paint can, the periphery of the bottom of the size of lining and described inside face and paint can matched.

36. paint can according to claim 30 and liner system, wherein, lining is made by thin polymer film.

37. paint can according to claim 30 and liner system, wherein, described periphery has an outstanding lip and at least one outstanding rib, and lining is stretched on outstanding lip and the outstanding rib.