CN209634864U - A kind of double container - Google Patents

Abstract

The utility model provides a kind of double container, belongs to technical field of daily necessities.It solves the problems, such as how to make double container, and not only integral strength is high but also can quickly recycle.This double container includes the inner pressurd vessel for having bottom being made of plastics and tubular outer layer body is made by papery, the outer layer body is socketed in outside inner pressurd vessel, be equipped between the outer layer body and inner pressurd vessel and outer layer body be connected to the locking structure on inner pressurd vessel outer peripheral surface, and be equipped on the outer layer body outer layer body can tear to destruction tear piece.This double container has carried out intensity to inner pressurd vessel and outer layer body respectively by annular groove and annular protrusion radially, and integral strength is high, realizes quick recycling by the piece that tears being arranged on outer layer body.

Description

A kind of double container

Technical field

The utility model belongs to technical field of living goods, is related to a kind of container, especially double container.

Background technique

Disposable container is the disposable article for needing to throw away, such as dixie cup, paper bowl, plastic cup, plastic bowl.Such as Dixie cup, uses cardboard to form the cup body of a single layer by techniques such as winding bondings, and the cup body as made of pure paper plate meets water After be easy to soften so that cause to leak outside, the water or beverage in cup cannot be kept for a long time, and soften cup body Be not easy to pick up, thus disposable paper cup usually the one side that dixie cup is contacted with water spray out a thin layer of waterproof PE film and One layer of edible wax is coated on PE film.

It is anti-scald in order to solve the problems, such as, a kind of double container is devised, i.e., using above-mentioned single layer dixie cup as inner cup, inside The outer of cup is further added by an outer cup, has anti-scald gap between outer cup and inner cup, will not directly contact when such hand holds outer cup Achieve the purpose that inner cup anti-scald.The dixie cup of this double-layer structure has also largely been applied, and because is all paper material It is made, when recycling is all very convenient.

In recent years, there is further requirement again to the useful life longevity of double container in the market, therefore use occur to drop The plastics of solution carry out manufactured plastic inner cup, and use outside socket one papery with plastic inner cup with gap outside plastic inner cup Cup, to form the double container of plastics and cardboard combination.The disposable paper vacuum cup (Patent No. as disclosed in Chinese patent 200920148189.3) and heat insulation structure of paper cup (201010566808.8).And the double container of this structure, outer cup Bottom be to be folded into two layers of structure to be reinforced, cause outer cup lower part that cannot form effective reinforced structure, it is therefore desirable to It is bonded to form reinforcing by glue, if being bonded without using glue, in being radially easily deformed for cup body, when picking up outer cup, outside Inner cup can be touched after cup compressive deformation, and inner cup does not have reinforced structure, inner cup is also easily deformed when heated, leads to entirety Intensity is not also high, is easy to scald one's hand when containing hot water and taking.

It is not exactly very friendly to environment that the double container that this plastics and papery are formed, which has one very big defect, although Degradation plastic, but the degradation time of degradation plastic needs the 2-3 year, and the usage amount of sanitary cup is also huge Big, very big burden can also be caused to environment by arbitrarily abandoning.So being necessary to the recycling of this double container 's.But this double container is because it is contemplated that it is all very firmly, in plastics that anti-scald and ease of use, outer cup and inner cup, which connect, Cup and the connection of papery outer cup need glue to be fixed, and can be thus to generate bigger difficulty in recycling: first is that this paper Cup must be to separate inner cup and the outer cup, but outer cup is Nian Jie by glue with inner cup in recycling due to being different material Very securely, and nowhere stress makes outer cup be not easy to separate from inner cup to outer cup；Second is that being adhered to the glue of plastic inner cup is Impurity, but glue is to be difficult to remove on plastic inner cup, the purification of recycled plastic becomes extremely difficult.

Other than the two directlys adopt glue bonding, somebody discloses inner cup and the outer cup use for plastic inner cup and papery outer cup Clamping structure is applied to plastic inner cup and papery outer cup is attached, such as U.S. Patent Publication by the fixed form of clamping structure A kind of double container (publication number is US2015/0048086A1), locking structure be using outer cup inner sidewall formed step, The bottom of inner cup is placed on step, and outer cup rim of a cup edge is inserted into inner cup wiredrawn edge, it is seen then that the structure of this clamping structure is strong Degree is not high, and especially inner cup is easy to take off from outer cup, therefore being also required to glue bonding just can be such that inner cup is not easy from outer It is detached from cup.And the integral strength of this clamping structure is not also high, as described above, only has folding in outer bottom of a cup portion Reinforcement radially, and the inner cup not reinforcement with radial direction are carried out at two layers of structure, and outer cup is with when inner cup clamping There is the one direction of up and down direction to be clamped, overall structural strength is not high, can also be easy to scald one's hand when containing hot water and taking.

Therefore, a kind of to have enough good integral strengths that the double container recycled is convenient for be expected by market again.

Summary of the invention

There is the above problem in the utility model, propose a kind of double container, the utility model institute in view of the prior art Technical problems to be solved are how to make double container not only integral strength is high but also can quickly recycle.

The utility model is realized by following technical proposal: a kind of double container, has bottom including what is be made of plastics Inner pressurd vessel and tubular outer layer body is made by papery, the outer layer body is socketed in outside inner pressurd vessel, which is characterized in that described outer It is equipped between layer body and inner pressurd vessel and outer layer body is connected to the locking structure on inner pressurd vessel outer peripheral surface, the locking structure includes It is formed on inner pressurd vessel outer peripheral surface and is formed in outer layer body to the recessed annular groove of inner pressurd vessel radial direction and with winding method The annular protrusion of inner peripheral surface or the locking structure include the annular protrusion being formed on inner pressurd vessel outer peripheral surface and with winding Mode is formed in outer layer body inner peripheral surface and the recessed annular groove of outer layers body radial direction, and the annular protrusion is embedded in ring In connected in star, and be equipped on the outer layer body outer layer body can tear to destruction tear piece.

Outer layer body is locked on inner pressurd vessel by this double container using the locking structure without glue, and such outer layer body is with regard to secured Be connected on inner pressurd vessel, it is not easy to separate, when being recycled after being finished this double container, then by be arranged in outer layer body On tear piece, outer layer body can easily be destroyed and be torn off, enable outer layer body be easy to from inner pressurd vessel separate, into And the plastic inner container of no glue impurity is obtained, realize quick recycling.And annular protrusion is formd on outer layer body, so that outside Layer body forms as similar reinforcement in arch bridge in radial directions, and after especially forming annular, reinforcement radially reaches maximum, So that cup is not easy to deform, on this basis, inner pressurd vessel form annular groove on side wall but also inner pressurd vessel radially Reinforced, and after annular protrusion is embedded into annular groove, annular protrusion to the annular groove of inner pressurd vessel radially Supporting role is played, so that integral strength in the radial direction further improves after connection.Therefore, can be increased by this structure Strong outer layer body is connected to the integral strength of inner pressurd vessel.It simultaneously being capable of rolling thickness or annular groove to annular protrusion when making Winding depth controlled, so as to adjust the insulated room of inner pressurd vessel and outer layer body away from.

In above-mentioned double container, the width of the annular protrusion is greater than the depth of the annular groove, so that interior There is gap between the outer wall of container and the inner wall of outer layer body.Making the outer layer body at locking structure also by this structure has Anti-scald ability, because outer peripheral portion of the cup close to bottom is also the part often held, and the width design energy increased The non-deformability for enough reinforcing annular flange, increases structural strength, and also increases the area of heated clamping.

In above-mentioned double container, the groove section shape of the annular groove is arc, rectangular or round, institute The convex sectional shape for the annular protrusion stated is round or ellipse.This shape is convenient for clamping well when thermal expansion.

In above-mentioned double container, the annular rib that there is the rim of a cup of the inner pressurd vessel inside container outer wall to rout up, institute Annular rib and bottom of the outer layer body stated without bottom and the inner pressurd vessel are respectively positioned on outside outer layer body, and the piece that tears is located at outer layer The rim of a cup edge of body simultaneously extends cup mouth, the outer wall bending for tearing piece outer layers body.Outer layer body rim of a cup can be by tight The mode of cooperation is positioned with inner pressurd vessel top, because the internal diameter of outer layer body rim of a cup is fixed, and the cup body of inner pressurd vessel is Taper, closer to the rim of a cup of inner pressurd vessel, the intensity of tight fit is bigger.Outer layer body can be made on top by this fixed form and Lower part can position.

On the basis of realizing quickly recycling, it can also will tear piece and carry out sufficient utilization and make to tear piece and have to tear It destroys outer layer body while outer layer body can be enhanced and be fixedly connected with inner pressurd vessel without glue, increase the intensity of this double container.That is outer layer Body bottom by locking structure by outer layer body bottom interlocking on inner pressurd vessel, on the basis of outer layer body lower limit, will tear Piece is arranged at the rim of a cup of outer layer body and bends and tear piece the outer wall for tearing piece outer layers body to be supported close to the part of rim of a cup It leans against on the annular rib of inner pressurd vessel, according to the different structure of annular rib, such as plate rib or L shape rib, can make It tears piece to be bent outwardly deformation and generate elastic force and act on outer layer body, the lock for being clamped the bottom of outer layer body by groove Determine structure to avoid that play occurs with the presence of pretightning force, because thin plastic inner container and paper outer layer are known from experience, there are larger heat expansions Shrinkage can loosen so as to cause locking structure, and these influences can be eliminated by tearing piece and generating these pretightning forces, to make entire Outer layer body can be firmly connected on inner pressurd vessel in the case where no glue, increase use intensity.

In above-mentioned double container, the piece connection outer layer body rim of a cup part that tears is initial part, in the outer layer The tear line opened up from initial part is set in the cup body of body, and the tear line is alternatively arranged by the impression for keeping cup body thickness thinning It is formed.Tear line can extend in cup body to any direction, by tear line and piece cooperation be torn, so that outer layer body is easier It must destroy.

In above-mentioned double container, the annular rib is wound outward by the rim of a cup of outer layer body, and described tears It pulls piece outward bending and is tightly attached on outer layer body lateral wall.This structure, which to tear piece, to be easy to shut down.

In above-mentioned double container, it is one section of impression that the tear line, which is located at one end at initial part, and the impression prolongs Extend to outer layer body rim of a cup.It is being pressed in annular rib due to tearing piece, inertia force-fitting this section generated when being torn Impression can be relatively easy to outer layer body and tear along tear line, and as optimal effect, tear line can be along inertia force side To setting, such as straight down.

In above-mentioned double container, it is described annular rib by the rim of a cup of outer layer body be folded into outward it is planar form, or Person's annular rib is turned down outward by the rim of a cup of outer layer body and is formed twice at L shape, and the tear piece and outer layer body rim of a cup are one Formula structure, and tear the arch section that is formed when piece outward bending against on annular rib.Integral structure refer into Row directly cuts out when cutting and tears piece with what rim of a cup was linked together, and such piece that tears is able to maintain preferably in outward bending Flexible deformation, and arch section against there is optimal elastic force.

In above-mentioned double container, the tear line be located at one end at initial part be one section of impression, this section of impression away from From outer layer body rim of a cup a distance.The tear line of this structure is arranged so that the intensity of rim of a cup improves, and enables and tears piece and have most Good elastic effect.

This double container can also be improved further, directly have plastics to be made outer layer body, by plastics be made as Then the plastic plate of the same thickness of A4 paper comes this plastic plate using using such as above-mentioned identical side as outer dixie cup Double-layer cup is made in method, in this way, can recycle in recycling, does not have to carrying out paper separation.This case still may is that

A kind of double container, including the inner pressurd vessel for having bottom that is made of plastics and by plastics at outer layer body, it is described outer Layer body is socketed in outside inner pressurd vessel, which is characterized in that is equipped between the outer layer body and inner pressurd vessel outer layer body being connected to inner pressurd vessel Locking structure on outer peripheral surface, the locking structure are on inner pressurd vessel outer peripheral surface and recessed to inner pressurd vessel radial direction including being formed in The annular groove that enters and the annular protrusion of outer layer body inner peripheral surface is formed in winding method or the locking structure includes shape At the annular protrusion on inner pressurd vessel outer peripheral surface and outer layer body inner peripheral surface and outer layers body radial direction are formed in winding method Recessed annular groove, the annular protrusion are embedded in annular groove.

Compared with prior art, this double container has the advantage that

1, integral strength is high, is carried out radially to inner pressurd vessel and outer layer body respectively by annular groove and annular protrusion The reinforcing of intensity and to be embedded into annular groove that be annular protrusion generate support to annular groove in annular protrusion further strong Integral strength is changed.

2, contain hot drink when outer layer body can be further locked on inner pressurd vessel by locking structure, and contain cold drink or Person then strengthens connection by tearing piece when not in use.

3, can fast and easy recycling, tear piece by being arranged on outer layer body, outer layer body can easily be destroyed It tears off, enables outer layer body to be easy to separate from inner pressurd vessel, and then obtain the plastic inner container of no glue impurity.

4, annular groove is formed on inner pressurd vessel made of plastic material, and the outer of paper material has originally been shaped to papery Annular protrusion, when containing the drink of high-temperature using this double container, plastics are different with the thermal expansion coefficient of papery, papery Thermal expansion does not almost have to consider, and the annular groove of thin plastic material can generate a small amount of thermal expansion, be embedded in annular protrusion Annular protrusion can further be clamped and be locked by the micro thermal expansion of the cell wall up and down of annular groove on the basis of in annular groove, Enhance the bonding strength and use reliability of double container.And another locking structure, that is, it is formed in thin on plastic inner container Annular protrusion can also generate a small amount of thermal expansion, on the basis of annular protrusion is embedded in annular groove annular protrusion tensioner lock It is scheduled on the cell wall up and down of the annular groove of thermal expansion very little.

Detailed description of the invention

Fig. 1-4 is that the difference of this double container tears the schematic diagram of structure.

Fig. 5 is the vertical cross section structure schematic diagram of this double container.

Fig. 6 is the enlarged structure schematic diagram in Fig. 5 after part A enlarged drawing and expanded by heating.

Fig. 7 is the lock condition and the enlarged structure schematic diagram after expanded by heating that annular protrusion is greater than annular groove.

Fig. 8 and Fig. 9 is tear line and the location diagram for tearing piece.

Figure 10 and 11 is the structural schematic diagram of different annular ribs in example IV.

Figure 12 is the vertical cross section structure schematic diagram of the double container of embodiment two.

Figure 13 is the vertical cross section structure schematic diagram of the double container of embodiment three.

Figure 14 and Figure 15 is the structural schematic diagram of the Double layer cup of embodiment five.

In figure, 1, inner pressurd vessel；11, annular rib；12, upper and lower cell wall；2, outer layer body；4, piece is torn；5, tear line；6, ring Connected in star；7, annular protrusion；8, gap.

Specific embodiment

It is specific embodiment of the utility model below, and the technical solution of the utility model is made further in conjunction with attached drawing Description, but the utility model is not limited to these examples.

Embodiment one:

As shown in Figure 1, this double container is a kind of cup-like containers, and it is in a circular table shape, including having bottom by what is be made of plastics Inner pressurd vessel 1 and outer layer body 2 made of papery, outer layer body 2 be socketed in outside inner pressurd vessel 1, the rim of a cup of inner pressurd vessel 1 has to content The annular rib 11 that 1 outer wall of device is routed up, annular rib 11 and bottom of the outer layer body 2 without bottom and inner pressurd vessel 1 are respectively positioned on outer layer body 2 Outside, it is equipped between outer layer body 2 and inner pressurd vessel 1 and outer layer body 2 is connected to the locking structure on 1 outer peripheral surface of inner pressurd vessel, in outer layer body 2 It is equipped with and tears piece 4 for what outer layer body 2 tore destruction, tear line 5 is equipped in the cup body of lower section for tearing piece 4 and facilitates destruction outer Layer body 2.Outer layer body 2 can be locked on inner pressurd vessel 1 using the locking structure of no glue, the just firm connection of such outer layer body 2 On inner pressurd vessel 1, it is not easy to separate, when being recycled after being finished this double container, then by being arranged on outer layer body 2 Piece 4 is torn, outer layer body 2 can easily be destroyed and be torn off, outer layer body 2 is enable to be easy to separate from inner pressurd vessel 1, into And the plastic inner container 1 of no glue impurity is obtained, realize quick recycling.

Tearing piece 4 can be there are many structure is changed, and tear as shown in Fig. 2, two groups are arranged on the outer layer body 2 of double container Piece 4 and tear line 5 destroy outer layer body 2 convenient for facilitating.Again as shown in figure 3, being arranged in piece 4 is torn with the sheet of outer layer body 2 simultaneously Tear line 5 is arranged in transverse annular, there are also piece 4 is torn as shown in figure 4, a part of itself is used as, i.e., straight by passing through in cup body The part for being easy to pinch after finger indentation of the formation of tear line 5 of the shapes such as angle, which is used as, tears piece 4.

As shown in figure 5, locking structure is located at the lower part or middle and lower part of double container, including annular groove 6 and convex annular 7 are played, annular groove 6 is radially recessed to be formed on 1 outer peripheral surface of inner pressurd vessel along inner pressurd vessel 1, has upper and lower cell wall 12, is It is directly formed in 1 compression moulding of inner pressurd vessel, the shape in section is arc, and annular protrusion 7 is formed in 2 inner peripheral surface of outer layer body On, it is wound from the bottom of outer layer body 2 to inner peripheral surface, it is different according to technique, it can be wound into round or ellipse, Annular protrusion 7 is embedded in annular groove 6 and the width of annular protrusion 7 is greater than the depth of the annular groove 6, so that content There is gap 8 between the outer wall of device 1 and the inner wall of outer layer body 2.To guarantee there are enough gaps 8 at locking structure, inner pressurd vessel 1 Part close to bottom increases the gap 8 to contract.It can be adjusted by the annular protrusion 7 that winding is formed, when need The outer diameter of annular protrusion 7 can be increased when wanting widened gap 8, make gap for obstructed use environment in actual production Adjusting becomes to be more easier.

As shown in fig. 6, locking structure in initial socket assembly due to the error of fit dimension, annular protrusion 7 can not It is completely connected in annular groove 6, is that the groove width of annular groove 6 is greater than the width of annular protrusion 7 on the left of Fig. 6, in this way, annular The case where cooperation of protrusion 7 and annular groove 6 is clearance fit, and this clearance fit can make shell generate play, but inside When portion contains the drink of high-temperature, plastics are different with the thermal expansion coefficient of papery, and the thermal expansion of papery does not almost have to consider, and thin The annular groove 6 of plastic material can generate a small amount of thermal expansion, formed such as along with the deforming plastic thin wall of brimmer hot drink The optimum state on the right side of Fig. 6, complete groove is fully wrapped around to be bonded and is clamped on annular protrusion 7, is tested by multiple sampling And observation, upper lower wall, which determines, can form clamping locking, reduce the generation of play.Cannot fully wrapped around reason it is very much, Ke Nengwen Degree, plastic material etc. have combined effect.

As shown in fig. 7, being that the width of annular protrusion 7 is greater than the groove width of annular groove 6 on the left of Fig. 7, in this way, annular protrusion 7 Only be partly embedded in annular groove 6, this structure be not it is sufficiently stable, inner pressurd vessel 1 be easy deviates from from outer layer body 2, In When inside contains the drink of high-temperature, plastics are different with the thermal expansion coefficient of papery, and the thermal expansion of papery does not almost have to consider, and The annular groove 6 of thin plastic material can generate a small amount of thermal expansion, and plastic thin wall is made to deform and form the best of the right side such as Fig. 7 State, annular protrusion 7 are completely embedded into annular groove 6, are tested and are observed by multiple sampling, and upper lower wall determination can more connect Contacting surface contacts with annular protrusion 7 and is formed clamping, reduces the case where outer layer body 2 is detached from from inner pressurd vessel 1.

The case where to not using and holding cold drink, can will tear piece 4 and adequately torn using making to tear piece 4 and have It destroys outer layer body 2 while outer layer body 2 can be enhanced and be fixedly connected with inner pressurd vessel 1 without glue, increase the intensity of this double container.Such as figure Shown in 5, tears piece 4 and be located at the rim of a cup edge of outer layer body 2 and extend cup mouth, annular rib 11 is outside by the rim of a cup of outer layer body 2 It winds, tear 4 outward bending of piece and is tightly attached on 2 lateral wall of outer layer body, make to tear piece 4 and be resisted against close to the part of rim of a cup On the annular rib 11 of inner pressurd vessel 1.This structure to produce tight fit between the rim of a cup of outer layer body 2 and annular rib 11, So that outer layer body 2 has fixation in upper and lower part.

As shown in Figure 1, tear piece 4 connect 2 rim of a cup part of outer layer body be initial part, in the cup body of outer layer body 2 setting from The tear line 5 that initial part opens up, tear line 5 are alternatively arranged by the impression for keeping cup body thickness thinning and are formed, and by tear line 5 and are torn The cooperation of piece 4 is pulled, so that outer layer body 2 is easier to destroy.2 expanded view of outer layer body as shown in Figure 8, tear line 5 are located at starting One end at portion is one section of impression, and the impression extends to 2 rim of a cup of outer layer body, and 5 other end of tear line is along straight down.In this way Outer layer body 2 can be relatively easy to by this section of impression of inertia force-fitting when piece 4 is torn in pull-out to tear along tear line 5.

Embodiment two:

Embodiment two is the same as example 1 substantially, and difference is locking structure, as shown in figure 12, including is formed in interior Annular protrusion 7 on 1 outer peripheral surface of container and it is formed in the annular groove 6 that 2 inner peripheral surface of outer layer body has upper and lower cell wall 12, convex annular 7 are played to be embedded in annular groove 6.Annular protrusion 7 on inner pressurd vessel 1 convexes to form from the inside to the outside, and annular groove 6 is by outer layer 2 bottom of body is bent to form.In conjunction with as shown in figure 8, its detailed process is first by the fan-shaped cardboard of outer layer body 2 in 2 bottom of outer layer body Along turn-line 13 turn down and be bonded with 2 inner sidewall of outer layer body, then fold partially on along broken line 14 to radial folding go out two to Fan-shaped paper plate bonding is formed the outer layer body of cone cell by the groove walls 12 of outer lug again later, is formed on plastic inner container 1 annular Raised 7 pairs of inner pressurd vessels 1 form reinforcement radially, and forming annular groove 6 in outer layer body 2 is two raised 12 shapes of cell wall up and down At outer layer body 2 is improved in radial strength, and inner pressurd vessel 1 can also generate a small amount of thermal expansion, is embedded in annular protrusion 7 7 tensioner of annular protrusion is locked on the cell wall up and down 12 of the annular groove 6 of thermal expansion very little on the basis of in annular groove 6, is made The integral strength in the radial direction for obtaining outer layer body 2 and inner pressurd vessel 1 is strengthened.

Embodiment three

Embodiment three is substantially identical as embodiment two, and difference is cell wall 12 up and down of the annular groove 6, in conjunction with Figure 13 With shown in Fig. 9, detailed process be first by the fan-shaped cardboard of outer layer body 22 bottom of outer layer body along turn-line 13 turn down and with it is outer Layer 2 inner sidewall of body fitting, then turning down the upper cell wall for going out an outwardly convex on partially to radial folding along broken line 14, Zhi Houzai Fan-shaped paper plate bonding is formed to the outer layer body of cone cell, and double-deck cardboard is wound into lower cell wall at turn-line 13, that is, descends slot Wall is that two ply board winds to be formed, and this structure can further strengthen the radial structure intensity of outer layer body.

Example IV:

Example IV is the same as example 1 substantially, difference tear piece 4 be bent outwardly deformation and generate elastic force simultaneously Act on outer layer body 2, make the bottom of outer layer body 2 by the locking structure of annular groove 6 with the presence of pretightning force without occurring Play.As shown in figure 9, the expanded view state of outer layer body 2 is cut out by Fig. 9, then by winding and being bonded to form outer layer body 2 When, it tears piece 4 and is an integral structure with outer layer body 2, such piece 4 that tears is able to maintain preferable elasticity change in outward bending Shape.As shown in Figure 10, annular rib 11 by the rim of a cup of outer layer body 2 be folded into outward it is planar form, or as shown in figure 11, ring Shape rib 11 is turned down outward by the rim of a cup of outer layer body 2 and is formed twice at L shape, is tearing the curved portion formed when 4 outward bending of piece Point against on annular rib 11.It is one section of impression, this section of impression that the tear line 5 of this structure, which is located at one end at initial part, Apart from 2 rim of a cup a distance of outer layer body the intensity of rim of a cup is improved, allows and tear piece 4 and there can be optimal elastic effect.

Embodiment five:

Such as Figure 14, a kind of Double layer cup, including the inner pressurd vessel 1 for having bottom that is made of plastics and by plastics at outer layer body 2, Outer layer body 2 is socketed in outside inner pressurd vessel 1, is equipped between outer layer body 2 and inner pressurd vessel 1 and outer layer body 2 is connected on 1 outer peripheral surface of inner pressurd vessel Locking structure.Plastics used in outer layer body 2 are a kind of thin plastic sheet plates, and thickness is this thin slice modeling between 0.5mm-2mm Flitch winding, which folds, is made outer layer body 2, and locking structure is identical as the locking structure of embodiment 1, and locking structure is located at double container Lower part or middle and lower part, including annular groove 6 and annular protrusion 7, annular groove 6 along inner pressurd vessel 1 be radially recessed to It is formed on 1 outer peripheral surface of inner pressurd vessel, there is upper and lower cell wall 12, is directly formed in 1 compression moulding of inner pressurd vessel, section Shape is arc, and annular protrusion 7 is formed on 2 inner peripheral surface of outer layer body, is wound from the bottom of outer layer body 2 to inner peripheral surface, It is different according to technique, it can be wound into round or ellipse, annular protrusion 7 is embedded in annular groove 6 and convex annular The width for playing 7 is greater than the depth of the annular groove 6, so that having gap between the outer wall of inner pressurd vessel 1 and the inner wall of outer layer body 2 8.Or locking structure is same as Example 2, as shown in figure 15, locking structure includes the ring being formed on 1 outer peripheral surface of inner pressurd vessel Shape protrusion 7 and it is formed in the annular groove 6 that 2 inner peripheral surface of outer layer body has upper and lower cell wall 12, annular protrusion 7 is embedded in annular groove In 6.Annular protrusion 7 on inner pressurd vessel 1 convexes to form from the inside to the outside, and annular groove 6 is bent to form by 2 bottom of outer layer body.

Specific embodiment described herein is only to give an example to the utility model.The affiliated skill of the utility model The technical staff in art field can make various modifications or additions to the described embodiments or using similar side Formula substitution, but without departing from the scope of the utility model or beyond the scope of the appended claims.

Claims (10)

1. tubular outer layer is made including the inner pressurd vessel (1) for having bottom being made of plastics and by papery in a kind of double container Body (2), the outer layer body (2) are socketed in inner pressurd vessel (1) outside, which is characterized in that between the outer layer body (2) and inner pressurd vessel (1) Equipped with the locking structure being connected to outer layer body (2) on inner pressurd vessel (1) outer peripheral surface, the locking structure includes being formed in content It is formed in outer layer body (2) on device (1) outer peripheral surface and to the recessed annular groove of inner pressurd vessel radial direction (6) and with winding method The annular protrusion (7) of circumferential surface or the locking structure include the annular protrusion (7) being formed on inner pressurd vessel (1) outer peripheral surface Be formed in outer layer body (2) inner peripheral surface and outer layers body radial direction with the recessed annular groove of winding method (6), the ring Shape protrusion (7) is embedded in annular groove (6), and is equipped on the outer layer body (2) and outer layer body (2) can be torn destruction Tear piece (4).

2. double container according to claim 1, which is characterized in that the width of the annular protrusion (7) is greater than described The depth of annular groove (6), so that there are gap (8) between the outer wall of inner pressurd vessel (1) and the inner wall of outer layer body (2).

3. double container according to claim 1 or 2, which is characterized in that the groove section shape of the annular groove (6) Shape be arc, the rectangular perhaps round annular protrusion (7) convex sectional shape be round or ellipse.

4. double container according to claim 1 or 2, which is characterized in that the rim of a cup of the inner pressurd vessel (1) has to content The annular rib (11) that device (1) outer wall is routed up, annular rib of the outer layer body (2) without bottom and the inner pressurd vessel (1) (11) and bottom is all exposed outer layer body (2) outside, and the piece (4) that tears is located at the rim of a cup edge of outer layer body (2) and extends cup mouth, The outer wall bending for tearing piece (4) outer layers body (2).

5. double container according to claim 4, which is characterized in that described tears piece (4) connection outer layer body (2) rim of a cup Part is initial part, and the tear line (5) opened up from initial part, the tear line are arranged in the cup body of the outer layer body (2) (5) it is alternatively arranged and is formed by the impression for keeping cup body thickness thinning.

6. double container according to claim 4, which is characterized in that the annular rib (11) is by outer layer body (2) Rim of a cup is wound outward, and described tears piece (4) outward bending and be tightly attached on outer layer body (2) lateral wall.

7. double container according to claim 5, which is characterized in that the tear line (5) is located at one end at initial part For one section of impression, and the impression extends to outer layer body (2) rim of a cup.

8. double container according to claim 4, which is characterized in that it is described annular rib (11) by outer layer body (2) cup Mouth be folded into outward it is planar form, or annular rib (11) by the rim of a cup of outer layer body (2) turn down outward twice at L shape and At tear piece (4) and outer layer body (2) rim of a cup are integral structures, and tear the arc formed when piece (4) outward bending Part against on annular rib (11).

9. double container according to claim 5, which is characterized in that the tear line (5) is located at one end at initial part For one section of impression, this section of impression is apart from outer layer body (2) rim of a cup a distance.

10. a kind of double container, including the inner pressurd vessel (1) for having bottom being made of plastics and by plastics at tubular outer layer body (2), the outer layer body (2) is socketed in inner pressurd vessel (1) outside, which is characterized in that sets between the outer layer body (2) and inner pressurd vessel (1) There is locking structure outer layer body (2) being connected on inner pressurd vessel (1) outer peripheral surface, the locking structure includes being formed in inner pressurd vessel (1) outer layer body (2) inner circumferential is formed on outer peripheral surface and to the recessed annular groove of inner pressurd vessel radial direction (6) and with winding method The annular protrusion (7) in face or the locking structure include the annular protrusion (7) being formed on inner pressurd vessel (1) outer peripheral surface and Outer layer body (2) inner peripheral surface and outer layers body radial direction are formed in the recessed annular groove of winding method (6), the annular Raised (7) are embedded in annular groove (6).