TWI777789B - Double-Wall Tubes, Double-Wall Containers, and Pneumatic Backstop Lid - Google Patents

Abstract

A double-wall embryo tube, a double-wall container and a gas-controlled anti-flip cover, the double-wall container is blow-molded from the double-wall embryo tube. The double-layer bottle includes a bottle mouth, an inner layer bottle, an outer layer bottle and an air pressure space therebetween. The air-controlled reverse flip cover is combined with the mouth of the bottle, and the air-controlled reverse flip cover includes a valve and an air inlet. There is a continuous air flow channel between the air-controlled backstop and the double-walled container. When squeezing the outer bottle, the air pressure in the air pressure space promotes the valve to close the air inlet and prevent the air from being discharged. According to this, the inner bottle is pressed by the air pressure, so that the inner bottle becomes volume-reduced and deformed to remove its contents from the air-controlled bottle. The backstop cover is released. Release the force of squeezing the outer bottle, the valve is released from the air inlet, the outside air is poured into the air pressure space through the air inlet, the air pressure in the air pressure space is maintained, the outer bottle returns to its original shape, and the inner bottle maintains a reduced pressure. Deformation. In addition, the air-operated backstop flap prevents air from entering the inner bottle, reducing the chance of contamination or oxidation of the contents.

Description

Double-Wall Tubes, Double-Wall Containers, and Pneumatic Backstop Lid

The invention relates to a double-wall embryo tube made of polyethylene terephthalate (PET for short) and its blow-molded double-wall container, and the invention also includes a gas-controlled backstop flap.

It is known that most liquid items such as beverages, seasonings, and pharmaceuticals are filled with plastic packaging containers, which are low in packaging cost and easy to use. Perishable, especially for non-disposable liquid items.

CN206187550U "Double-layer plastic bottle for preventing air mixing into bottled liquid" (hereinafter referred to as the 550 case) proposes a solution to the above problem. The plastic bottle is composed of an inner layer and an outer layer, the bottom of the inner layer is connected with the bottom of the outer layer; the bottle wall of the inner layer is partially connected to the bottle wall of the outer layer. The mouth of the outer layer is provided with a vent hole penetrating the bottle wall of the outer layer at the position where the two layers are not connected, the thread or the fitting pattern is provided with a groove, and the groove is communicated with the vent hole. When the outer cover is opened and the liquid is poured, the human hand squeezes the bottle wall, the inner bottle wall and the outer bottle wall shrink at the same time, and the liquid slowly flows out from the inner bottle through the solution outlet; when the hand is released, the liquid stops flowing , the inner bottle wall remains in a shrinking state, while the outside air enters the gas space between the two bottle walls through the air groove and the vent hole, the inner bottle wall remains in a shrinking state, and the outer bottle wall expands to its original state.

TW201801995A "Multilayer Bottles Made of Synthetic Resin" (hereinafter referred to as the 995 case) pointed out that the above-mentioned 550 cases would have the problem that the contents could not be fully poured out and the residual liquid would increase, so a solution was proposed. The solution is to prepare the shell bottle with an outer mouth, a shoulder, a carcass, a bottom, and a grounding portion, and the original shape can be restored to the external pressure, and the shoulder is at least connected to the outer mouth. The section of the part is circular, the bottom is a polygonal pyramid, and there is a ridgeline connected to the extension line of the polygonal pyramid-shaped ridgeline of the shoulder. The inner container body is prepared with a cylindrical inner mouth portion arranged on the inner peripheral side of the outer mouth portion, and an inner container body cap body having a shape along the inner surface shape of the outer bottle; There are air passages in between.

The inventor of the present case believes that the air intake and exhaust required for the double-layer container should be controlled, so that the user can squeeze the outer bottle wall with less effort, and make more use of the air pressure between the inner bottle and the outer bottle. The content of the inner layer bottle is squeezed out, so that the residual amount of the inner bottle liquid can be less, and the user can squeeze more effortlessly. Therefore, the present invention proposes a double-wall embryo tube, a blow-molded double-wall container thereof, and an air-operated backstop.

Technical features of the present invention:

A double-walled embryo tube, comprising: an endomorph and an ectoderm;

The inner embryo is a plastic-molded tubular body with a closed bottom and an open top; it includes an inner bottle mouth, a bottle mouth eaves extending outward from the inner bottle diameter, and a bottle mouth layer, a bottle mouth layer and a bottle mouth eaves are sequentially formed under the bottle mouth eaves. An inner neck, an inner shoulder, and an inner body; the outer diameter of the inner neck is smaller than the outer diameter of the bottle mouth level and the inner body shoulder; the bottle mouth eaves and the bottle mouth level open at least one connection to the inner bottle The air inlet of the bottle neck; the endoform shoulder includes a plurality of longitudinal first ribs and a plurality of longitudinal second ribs, the second ribs are located between two adjacent first ribs; in the first A groove is formed between the protruding rib and the second protruding rib, and the groove is connected to the inner neck and the inner body;

The ectocyst is a plastic-molded tubular body with a closed bottom and an open top, and is wrapped in sequence from top to bottom. Including an outer bottle mouth, an outer bottle neck, a stop ring, an ectoform shoulder, and an ectoform body; the inner wall of the outer bottle mouth is provided with an upwardly open receiving groove; the inner wall of the ectoform is provided with several a longitudinal guide groove, the guide groove extends upward from the outer shell shoulder to the outer bottle mouth; the outer neck is provided with a notched external thread;

The inner embryo is sleeved in the outer embryo, the receiving groove receives the bottle mouth eave; the air inlet, the inner neck, the groove, and the guide groove of the inner embryo form an air flow passage.

A double-walled container comprising:

It includes an inner bottle mouth and an outer bottle mouth, the outer bottle mouth surrounds the inner bottle mouth; a bottle mouth eaves extend outward from the inner bottle diameter, and an inner bottle neck is formed under the bottle mouth eaves, and an inner bottle neck is formed under the bottle mouth eaves. An inner bottle shoulder is formed, and an inner bottle is formed below the inner bottle shoulder; the inner bottle shoulder is formed with several longitudinal grooves; the bottle mouth eaves are provided with at least one air inlet connected to the inner bottle neck; the outer bottle mouth The inner wall of the bottle is provided with an upwardly open receiving groove, which receives the eaves of the bottle mouth and forms a spot welding; the outer wall of the outer bottle mouth is provided with an external thread with a gap, and an outer bottle shoulder is formed below the external thread. An outer bottle is formed below the outer bottle shoulder; the inner wall surface of the outer bottle mouth is provided with several longitudinal guide grooves, and the guide grooves extend to the outer bottle shoulder; there is a pressure space between the inner bottle and the outer bottle ; The air inlet, the inner bottle neck, the groove and the guide groove form the air flow passage, and the air flow passage communicates with the air pressure space; the outer layer bottle deforms inwardly and can elastically return to its original shape when it is externally pressurized ; The inner bottle is squeezed, that is, the volume is gradually reduced and the deformation does not return to its original state;

An air-controlled backstop flip cover, comprising:

a lid body, a linked flip-up lid connected to the lid body, a check valve provided in the lid body, and an injection part provided in the lid body;

The cover body is a plastic molded part, including a top and a skirt vertically connected with the periphery of the top; the lower surface of the top is concentrically provided with an outer sealing ring, a short sealing ring and a Long sealing ring; the skirt is provided with a notched internal thread; the top is provided with an annular air groove and an annular installation groove; the annular installation groove surrounds a bearing surface; the annular air groove is provided with an air flow hole; An injection hole is set in the center of the bearing surface;

The check valve is an elastic plastic molded part that can be physically deformed and restored to its original shape; the check valve includes an annular base, and the annular base extends radially outward and horizontally extends a flap in the shape of a sheet and can elastically move up and down; The annular base surrounds and connects a valve plate that can be elastically agitated up and down, and the periphery of the valve plate is provided with a peripheral injection hole; the check valve is installed in the annular installation groove of the cover body with the annular base, The valve plate contacts the bearing surface and seals the injection hole, and the valve extends toward the annular air groove;

The injection part is installed in the cover body, the check valve is fixed between the cover body and the injection part; the injection part includes a nozzle; the injection part is provided with a position corresponding to the valve an air inlet, the valve rests beneath and shields the air inlet.

Squeezing the outer layer bottle can reduce the volume of the inner layer bottle and squeeze out the contents. When the outer layer bottle is squeezed, the air-controlled anti-flip cap can prevent the air in the air pressure space and the air flow channel from being released to the outside. to maintain the air volume and air pressure in the air pressure space. Using the dual functions of the outer layer bottle deformation and air extrusion, the inner layer bottle is reduced in volume and deformed to extrude the contents.

Release the squeezing force of the outer layer bottle, the outer layer bottle elastically returns to its original shape, so that the originally compressed air pressure space is released and expanded, the air in the air flow channel flows back into the air pressure space, and the suction generated by the air return makes the air pressure space. The valve releases the air inlet, and the outside air passes through the air inlet and pushes the valve open, and enters the air pressure space through the above-mentioned air flow channel, so that the air pressure space is filled with air.

The volume reduction and deformation of the inner bottle will not be restored, and the air-controlled backstop cover prohibits external air into the inner bottle.

When the content is released more and more, the volume reduction and deformation of the inner bottle will become larger and larger (the inner bottle will become smaller and smaller), the air pressure space will become larger and larger, and there will be more and more air in the inner bottle. By squeezing the outer layer bottle with the same force, the outer layer bottle can generate enough air pressure to re-extrude the content of the inner layer bottle with the same amount of deformation. In other words, when the content of the inner bottle becomes less and less, the user does not need to increase the force of squeezing the outer bottle, nor does the outer bottle need to increase the amount of deformation, the content can still be squeezed out from the inner bottle, and finally the bottle can be squeezed out. Almost empty.

1: Double-walled embryo tube

10: Endoderm

11: Inner bottle mouth

12: Bottle eaves

121: Arc convex

13: Bottle mouth class

14: Inner Bottleneck

15: Endodermal Shoulder

151: The first rib

152: Second rib

153: Groove

16: Endomorph

28: Air flow path

29: Air Gap

3: Double Wall Container

30: Bottle mouth

31: inner bottle

311: inner bottle shoulder

32: Outer bottle

33: Air pressure space

34: Outer bottle shoulder

35: Middle section

351: Axial Ribs

36: Lower section

46: Dividing Wall

461: Notch

47: Annular air groove

471: Air flow hole

48: Ring mounting groove

49: Bearing surface

491: Outlet hole

50: Check valve

51: Ring base

52: Outer Ring Wall

53: Inner Ring Wall

54: Embedded groove

17: Air intake

20: Ectoderm

21: Outer bottle mouth

211: receiving slot

212: Arc concave

22: Outer Bottleneck

221: Notch

222: External thread

23: Separation Ring

24: Stop ring

25: ectodermal shoulder

26: Ectomorph

27: Diversion groove

37: Stage difference

4: Pneumatic backstop flip cover

40: Linked flip cover

41: cover body

42: Top

43: skirt

431: Gap

432: Internal thread

441: long sealing ring

442: Short sealing ring

443: Outer sealing ring

45: Annular side wall

451: The first card system

55: Valves

56: Peripheral injection hole

57: valve plate

60: note out

61: Covering Department

611: Air intake

62: Annular embedded wall

63: Ring Snap Wall

631: The second card system

64: Coronal Department

641: Nozzle

90: Contents

[Fig. 1] A perspective view of the endomorph of the present invention.

[Fig. 2] A plan view of the endomorph of the present invention.

[Fig. 3] is a sectional view taken along III-III in Fig. 2. [Fig.

[Fig. 4] A top view of the endomorph of the present invention.

[Fig. 5] A longitudinal sectional view of the endomorph of the present invention.

[Fig. 6] A perspective view of the ectoderm of the present invention.

[Fig. 7] A plan view of the ectoderm of the present invention.

[ Fig. 8 ] is a sectional view of VIII-VIII in Fig. 7 .

[Fig. 9] A longitudinal sectional view of the ectoderm of the present invention.

[ Fig. 10 ] An external view of the combination of endomorph and ectoderm according to the present invention.

[ Fig. 11 ] is a cross-sectional view taken along the line XI-XI in Fig. 10 .

[Fig. 12] is a cross-sectional view taken along XII-XII in Fig. 10. [Fig.

[Fig. 13] is a cross-sectional view taken along line XIII-XIII in Fig. 12. [Fig.

[Fig. 14] is a cross-sectional view taken along XIV-XIV in Fig. 12. [Fig.

[Fig. 15] One of the three-dimensional exploded views of the air-controlled backstop cover of the present invention.

[FIG. 16] A cross-sectional view of the cover body of the air-controlled backstop cover of the present invention.

[FIG. 17] The cross-sectional view of the check valve of the air-controlled back check flip cover of the present invention.

[Fig. 18] A cross-sectional view of the injection outlet of the gas-controlled backstop cover of the present invention.

[Fig. 19] The second exploded perspective view of the gas-controlled backstop cover of the present invention.

[FIG. 20] The combined appearance view of the air-controlled backstop cover of the present invention.

[FIG. 21] The combined cross-sectional view of the air-controlled backstop cover of the present invention.

[FIG. 22] A cross-sectional view of the combination of the air-controlled back-flip lid and the bottle mouth of the double-wall container of the present invention.

[Fig. 23] A plan view of the combination of the gas-controlled backstop flap and the double-wall container of the present invention.

[Fig. 24] A schematic diagram of the double-walled container of the present invention being squeezed to release the contents.

[Fig. 25] A schematic diagram of the air flow and the flow of the contents in the double-wall container of the present invention when the contents are squeezed out.

[Fig. 26] A schematic diagram of the volume reduction and deformation of the inner bottle of the double-wall container of the present invention when the outer bottle returns to its original shape.

[Fig. 27] A schematic diagram of the air flow in which the outer bottle of the double-wall container of the present invention returns to its original shape and the inner bottle is reduced in volume and deformed.

[Fig. 28] A schematic diagram of the double-walled container of the present invention squeezing the outer bottle after the inner bottle is reduced in volume and deformed.

[Fig. 29] A schematic diagram of the volume reduction and deformation of the inner bottle of the double-wall container of the present invention when the outer bottle returns to its original shape.

In order to facilitate the description of the central idea of the present invention expressed in the column of the above-mentioned summary of the invention, specific embodiments are hereby expressed. Various objects in the embodiments are drawn according to proportions, dimensions, deformations or displacements suitable for description, rather than the proportions of actual elements, which will be described first. In the following description, identical and symmetrically arranged elements are denoted by the same reference numerals.

The present invention comprises a double-wall embryo tube 1, a double-wall container 3 blow-molded by the double-wall embryo tube 1, and And the air-controlled anti-flip lid 4 combined with the double-walled container 3 .

The double-wall embryo tube 1 includes an endoform 10 and an ectoderm 20 , both of which are molded products of polyethylene terephthalate (PET for short) material.

As shown in FIGS. 1 to 5 , the inner embryo 10 is a tubular body with a closed bottom and an open top, and includes an inner bottle mouth 11 , and a bottle mouth eaves 12 extending radially outward from the inner bottle mouth 11 . A bottle mouth level 13 , an inner neck 14 , an inner embryo shoulder 15 , and an inner embryo body 16 are formed sequentially from top to bottom. The edge of the bottle mouth eave 12 is provided with an annular arc convex 121 , and the outer diameter of the bottle mouth tier 13 is smaller than the outer diameter of the bottle mouth lip 12 . The outer diameter of the inner neck 14 is smaller than the outer diameter of the neck level 13 and the inner shoulder 15 . The bottle mouth eaves 12 and the bottle mouth level 13 have at least one air inlet 17 connected to the inner bottle neck. In the illustration, the number of the air inlets 17 is three, which are evenly distributed on the bottle mouth eave 12 and the bottle mouth layer 13 . The inner embryo shoulder 15 includes a plurality of longitudinal first ribs 151 and a plurality of longitudinal second ribs 152 , and the second ribs 152 are located between two adjacent first ribs 151 . The thickness of the first protruding rib 151 is larger than that of the second protruding rib 152 , a groove 153 is formed between the first protruding rib 151 and the second protruding rib 152 , and the groove 153 communicates with the inner bottle neck 14 and the Endomorph 16.

As shown in Fig. 6 to Fig. 9, the ectoderm 20 is a tubular body with a closed bottom and an open top. From top to bottom, it includes an outer bottle mouth 21, an outer bottle neck 22, a partition ring 23, a stop ring 24, a An ectodermal shoulder 25, and an ectodermal body 26. The inner wall surface of the outer bottle mouth 21 is provided with an upwardly open receiving groove 211 , and the vertical wall of the receiving groove 211 is provided with an annular arc concave 212 . The inner wall of the outer body 20 is provided with a plurality of longitudinal guide grooves 27 , and the guide grooves 27 extend upward from the outer body shoulder 25 to the outer bottle mouth 21 . The outer bottle neck 22 is provided with an outer thread 222 with a notch 221 . The thickness of the ectoderm 20 is greater than the thickness of the endomorph 10 . The wall thickness of the ectodermal shoulder 25 and the ectodermal body 26 is 1.5 to 2 times the wall thickness of the endodermal shoulder 15 and the ectodermal body 16 .

As shown in Fig. 11 to Fig. 14 , the endomorph 10 is nested in the ectoderm 20 to form a double-wall embryo tube 1 . The air inlet 17 of the inner embryo 10 , the bottle mouth level 13 , the inner neck 14 , the groove 153 , and the guide groove 27 of the outer embryo 20 form an air flow passage 28 . Because the thickness of the first protruding rib 151 of the endoform 10 is relatively large, it is in contact with the inner wall of the ectodermal shoulder 25; An air gap 29 is maintained on the inner wall of the air gap 29 , and the air gap 29 communicates with the airflow passage 28 . FIG. 11 depicts that the receiving groove 211 of the outer embryo 20 receives the bottle mouth eave 12 of the inner embryo 10 , and the arc convex 121 and the arc concave 212 are mutually limited. FIG. 12 depicts the air inlet 17 of the endoform 10 communicating with the air flow passage 28 .

As shown in Fig. 23, the double-walled embryo tube 1 is made into a double-walled container 3 by a known injection blow molding method or injection stretch blow molding method. The double-walled container 3 includes a mouth 30 . The bottle mouth 30 is composed of the inner bottle mouth 11 , the bottle mouth eaves 12 , the air inlet 17 , the bottle mouth level 13 , the inner bottle neck 14 , the outer bottle mouth of the inner body 10 and the outer body 20 . 21. The outer thread 222, the separating ring 23, and the stop ring 24 are formed; the bottle mouth 30 is for combining with the air-controlled back-flip cap 4.

The inner body 15 and the inner body 16 are blow-molded into an inner shoulder 311 and an inner bottle 31, and the outer shoulder 25 and the outer body 26 are blow-molded into an outer shoulder 34 and an outer bottle 32. The arc convex 121 and the arc concave 212 of the inner bottle mouth 11 and the outer bottle mouth 21 are formed by point welding (not shown) during blow molding. Since the first protruding rib 151 of the inner shoulder 15 is in contact with the inner wall of the outer shoulder 25 , it can also form spot welding (not shown) during blow molding. However, because the second protruding rib 152 is not in contact with the inner wall of the outer shoulder 25, the above-mentioned airflow passage 28 is not closed or interrupted by welding. The groove 153 of the inner shoulder 15 still exists in the inner shoulder 311 and is enlarged by blow molding. The bottom center point of the inner layer bottle 31 is welded with the bottom center point of the outer layer bottle 32 . The height of the double-walled container 3 is between 100 mm and 250 mm. The thickness of the outer layer bottle 32 is 0.20-0.50 mm, and the thickness of the inner layer bottle 31 is 0.05-0.25 mm. There is an air pressure space 33 between the inner bottle 31 and the outer bottle 32 . The air flow passage 28 of the double-walled embryo tube 1 still remains in the double-walled container 3 and communicates with the air pressure space 33 .

The outer bottle shoulder 34 of the outer layer bottle 32 is tapered in shape, the cross-sectional shape perpendicular to the central axis is circular or polygonal, and the corners are arc-shaped. The cross-sectional shape of the middle section 35 of the outer layer bottle 32 perpendicular to the central axis is circular, and the outer wall of the middle section 35 is provided with axial ribs 351 . The cross-sectional shape of the lower stage portion 36 of the outer layer bottle 32 orthogonal to the central axis is circular. A ring-shaped concave level difference 37 is formed at the junction of the middle section 35 , the outer bottle shoulder 34 and the lower section 36 , respectively. The inner layer bottle 31 can be formed into a straight cylindrical shape, and can also be formed according to the shape of the outer layer bottle 32 .

23 and 24, the structure and shape of the outer layer bottle 32 can be pressed and spring back to its original shape at the middle section 35. When the outer layer bottle 32 is pressed, the inner layer bottle 31 will be deformed by volume reduction, and the inner layer bottle 31 will not return to the volume reduction deformation due to the thinness of the bottle wall, thereby obtaining excellent extrudability. The pressing operation and the deformation of the bottle will be described in detail later.

As shown in FIGS. 15 to 21 , the air-controlled anti-flip lid 4 combined with the bottle mouth 30 of the double-walled container 3 includes: a lid body 41 , and a linked flip-up lid 40 connected to the lid body 41 . , a check valve 50 arranged in the cover body 41 , and an injection part 60 arranged in the cover body 41 .

As shown in FIGS. 15 and 16 , the cover body 41 is a plastic molding, including a top portion 42 and a skirt portion 43 vertically connected to the outer circumference of the top portion 42 . An outer sealing ring 443 , a short sealing ring 442 and a long sealing ring 441 are concentrically arranged on the lower surface of the top 42 from the outside to the inside. The top 42 is divided into an annular air groove 47 and an annular installation groove 48 by a concentric annular side wall 45 and a partition wall 46 . The annular air groove 47 surrounds the annular installation groove 48 , the annular installation groove 48 surrounds a support surface 49 , and the support surface 49 is located at the center of the top 42 . The inner surface of the annular side wall 45 is surrounded by a concave first locking portion 451 . The annular air groove 47 is provided with an air flow hole 471 at a position close to the skirt 43 and avoiding the short sealing ring 442 . A recess 461 is formed in the partition wall 46 corresponding to the air flow hole 471 . The height of the support surface 49 is higher than the height of the top edge of the partition wall 46 and the annular side wall 45 , the support surface 49 is an arc concave surface, and an injection hole 491 is provided at the lowest center of the arc concave surface.

As shown in FIG. 15 and FIG. 17 , the check valve 50 is an elastic plastic molded part that can be physically deformed and restored to its original state. The check valve 50 includes an annular base 51 , the annular base 51 includes an outer annular wall 52 and an inner annular wall 53 , and the inner annular wall 53 is higher than the outer annular wall 52 . An annular embedding groove 54 is formed between the ring wall 53 and the outer ring wall 52 . A portion of the outer ring wall 52 extends horizontally radially outward with a thin flap 55 that can elastically move up and down. The top end of the inner ring wall 53 surrounds and connects a film-shaped valve plate 57 . The valve plate 57 has the elasticity of up and down agitation. The periphery of the valve plate 57 is provided with a plurality of peripheral injection holes 56 .

As shown in FIG. 19 and FIG. 21 , the check valve 50 is installed in the annular mounting groove 48 of the cover body 41 with the annular base 51 , and the valve plate 57 is in a downward arc concave contact with the cover body 41 . The bearing surface 49 of the cover body 41 is positioned so as to seal the injection hole 491 , and the valve 55 is located in the notch 461 of the cover body 41 and extends toward the annular air groove 47 .

As shown in FIGS. 15 and 18 , the injection part 60 is a plastic molded part, including a horizontal covering part 61 , an annular embedded wall 62 formed on the bottom surface of the covering part 61 near the center, and formed on the bottom surface of the covering part 61 . A ring-shaped locking wall 63 near the periphery, a crown portion 64 formed in the center of the covering portion 61 that protrudes upward and hollow inside, and a nozzle formed on the top surface of the crown portion 64 and passing through the crown portion 64 641. The outer side surface of the annular buckling wall 63 is provided with a protruding second locking portion 631 . The covering portion 61 is provided with an air inlet 611 .

As shown in FIG. 20 and FIG. 21 , the injection part 60 is locked on the first locking part 451 of the annular side wall 45 of the cover body 41 by the second locking part 631 of the annular locking wall 63 , so that the The injection part 60 is fixed in combination with the cover body 41 . The air inlet 611 is opposite to the annular air groove 47 of the cover body 41 , and the valve 55 is still located under the air inlet 611 and shields (not tightly seals) the air inlet 611 . The annular embedded wall 62 of the injection piece 60 is inserted into the embedded groove 54 of the check valve 50 , so that the check valve 50 is fixed between the cover body 41 and the injection piece 60 . The crown portion 64 surrounds the peripheral injection hole 56 of the check valve 50 and the valve plate 57, and the crown portion 64 maintains a distance between the peripheral injection hole 56 and the valve plate 57, so that the valve plate 57 Can be elastically agitated up and down.

As shown in FIG. 22 , the air-controlled anti-flip cap 4 is combined with the bottle mouth 30 of the double-walled container 3 , the inner thread 432 of the air-controlled anti-flip cap 4 and the outer thread 222 of the outer bottle mouth 21 Tighten the outer sealing ring 443 combined with the air-controlled anti-flip cap 4 to tightly fit the outer corner of the outer bottle mouth 21, and the short sealing ring 442 is tightly sealed to the top edge of the outer bottle mouth 21 but not sealed The air inlet 17 and the long sealing ring 441 protrude into and abut against the inner wall of the inner bottle mouth 11 . The outer sealing ring 443 , the short sealing ring 442 and the long sealing ring 441 ensure the airtight effect of the inner bottle 31 and the bottle mouth 30 , so the air in the airflow passage 28 will not leak out of the bottle mouth. The valve plate 57 of the check valve 50 is tightly attached to the supporting surface 49 of the cover body 41 , the injection hole 491 and the peripheral injection hole 56 are sealed, and the outside air cannot enter the inner bottle 31 .

There is a continuous air flow channel between the air-controlled anti-flip cover 4 and the double-walled container 3 . The air flow hole 471 of the cover body 41 is connected with the air flow passage 28 of the double-walled container 3 . The air flow channel communicates with the air pressure space 33 of the double-walled container 3 .

As shown in Fig. 24 and Fig. 25, the double-walled container 3 is tilted with the air-controlled anti-flip lid 4 facing downward during use, and the user's hand holds and squeezes the middle section 35 of the outer layer bottle 32. Based on the outer layer bottle The step difference 37 between 32 controls the deformation area of the outer layer bottle 32 in the middle section 35, and the outer bottle shoulder 34 and the lower section 36 of the outer layer bottle 32 will not be deformed. In addition, the level difference 37 of the outer bottle 32 and the axial ribs 351 control the inward deformation of the middle section 35 when being squeezed, so as to avoid excessive rupture or failure to elastically recover.

When the outer layer bottle 32 is squeezed, the air pressure space 33 of the double-walled container 3 and the air in the above-mentioned air flow channel (indicated by thin arrows in the figure) will also be squeezed, especially the air in the above-mentioned air flow channel. The air pressure generated by the flow will push the valve 55 of the check valve 50 from the inside, so that the valve 55 tightly closes the air inlet 611 of the injection part 60, preventing the air from being released to the outside, so as to maintain the air pressure space 33 and the air volume and pressure in the above air runners.

After being squeezed by the outer layer bottle 32 , the inner layer bottle 31 is compressed to produce volume reduction deformation, and the content 90 (indicated by the arrows filled with thin dots in the figure) pushes the valve from the injection hole 491 of the cap body 41 Piece 57, the valve piece 57 is elastically deformed and arched away from the bearing surface 49, the arched valve piece 57 opens the injection hole 491 and the peripheral injection hole 56, and the content 90 passes through the peripheral injection hole 56. Nozzle 641 flows out.

As shown in FIGS. 26 and 27 , release the pressing on the middle section 35 of the outer layer bottle 32 , the middle section 35 elastically returns to its original shape, and the originally compressed air pressure space 33 is released and expanded, and the air in the air flow channel goes to the The air pressure space 33 is backflowed, and the suction force generated by the air backflow causes the valve 55 to release the air inlet 611 , and the outside air passes through the air inlet 611 and pushes the valve 55 away, and enters the air pressure space 33 through the above-mentioned air passage. , the air pressure space 33 is filled with air. Due to the thinness of the bottle wall, the release of the content 90 and the air pressure of the air pressure space 33, the inner layer bottle 31 will not return to its volume reduction deformation. When the outer layer bottle 32 is released, the content 90 of the inner layer bottle 31 stops being released to the outside, and the valve plate 57 of the check valve 50 returns to the state of being in contact with the supporting surface 49 . The injection hole 491 and the peripheral injection hole 56 are closed, and outside air does not enter the inner layer bottle 31 .

As shown in FIG. 28 and FIG. 29, based on the above-mentioned principle, the middle section 35 of the outer layer bottle 32 is repeatedly squeezed, and the inward deformation of the outer layer bottle 32 produces a squeezing effect on the air in the air pressure space 33, and the air pressure is used to remove Squeeze the inner bottle 31 to release the content 90 of the inner bottle 31 to the outside. The more the content 90 is released, the larger the volume reduction and deformation of the inner layer bottle 31 (the inner layer bottle 31 is smaller and smaller), the larger the air pressure space 33 is, and the more the air in the inner layer bottle 31 is. The more the user squeezes the middle section 35 of the outer bottle 32 with the same force, the outer bottle 32 can generate enough air pressure to squeeze out the content 90 of the inner bottle 31 with the same deformation. When the content 90 of the inner bottle 31 becomes less and less, but the user does not need to increase the force of squeezing the outer bottle 32, nor does the outer bottle 32 need to increase the deformation amount, the content 90 can still be squeezed from the inner bottle 31 out, it can finally be close to the level of headroom.

In order to facilitate the description of the variation of the double-walled container, some detailed structures described in FIG. 25 are omitted in FIGS. 24 , 26 , 28 and 29 .

11: Inner bottle mouth

12: Bottle eaves

14: Inner Bottleneck

17: Air intake

21: Outer bottle mouth

22: Outer Bottleneck

23: Separation Ring

24: Stop ring

28: Air flow path

30: Bottle mouth

31: inner bottle

32: Outer bottle

40: Linked flip cover

43: skirt

432: Internal thread

441: long sealing ring

442: Short sealing ring

443: Outer sealing ring

47: Annular air groove

471: Air flow hole

49: Bearing surface

491: Outlet hole

51: Ring base

55: Valves

56: Peripheral injection hole

57: valve plate

61: Covering Department

611: Air intake

64: Coronal Department

641: Nozzle

Claims (16)

A double-walled embryonic tube comprising: an endomorph and an ectoderm; The inner embryo is a plastic-molded tubular body with a closed bottom and an open top; it includes an inner bottle mouth, a bottle mouth eaves extending outward from the inner bottle diameter, and a bottle mouth layer, a bottle mouth layer and a bottle mouth eaves are sequentially formed under the bottle mouth eaves. An inner neck, an inner shoulder, and an inner body; the outer diameter of the inner neck is smaller than the outer diameter of the bottle mouth level and the inner body shoulder; the bottle mouth eaves and the bottle mouth level open at least one connection to the inner bottle The air inlet of the bottle neck; the endoform shoulder includes a plurality of longitudinal first ribs and a plurality of longitudinal second ribs, the second ribs are located between two adjacent first ribs; in the first A groove is formed between the protruding rib and the second protruding rib, and the groove is connected to the inner neck and the inner body; The ectoderm is a plastic-molded tubular body with a closed bottom and an open top, and includes an outer bottle mouth, an outer neck, a stop ring, an ectoderm shoulder, and an ectoderm body in sequence from top to bottom; the outer bottle The inner wall of the mouth is provided with an upwardly open receiving groove; the inner wall of the ectoform is provided with a number of longitudinal guide grooves, and the guide grooves extend upward from the outer body shoulder to the outer bottle mouth; the outer neck is provided with Notched external threads; The inner embryo is sleeved in the outer embryo, the receiving groove receives the bottle mouth eave; the air inlet, the inner neck, the groove, and the guide groove of the inner embryo form an air flow passage. The double-wall embryo tube according to claim 1, wherein the edge of the bottle mouth eave is provided with an annular arc convex, and a vertical wall of the receiving groove is provided with an annular arc concave; When combined, the arc protrusions are located in the arc concave to limit each other. The double-walled embryo tube of claim 1, wherein the thickness of the ectoderm is greater than the thickness of the endoderm. The double-wall embryo tube of claim 3, wherein the ectodermal shoulder and the wall of the ectodermal body Thickness is 1.5 to 2 times the wall thickness of the endomorph shoulder and the endomorph body. The double-wall embryo tube as claimed in claim 1, wherein the thickness of the first protruding rib is greater than that of the second protruding rib, the first protruding rib is in contact with the inner wall of the outer shoulder, and the second protruding rib is connected to the second protruding rib. The inner wall of the ectodermal shoulder maintains an air gap, and the air gap communicates with the air flow passage. A double-walled container made of the double-walled embryo tube of claim 1, comprising: The inner bottle mouth, the bottle mouth eaves, the air inlet, the bottle mouth step, the inner bottle neck, the outer bottle mouth, the external thread, and the stop ring constitute a bottle mouth of the double-wall container; The inner body shoulder and the inner body are blow molded into an inner bottle shoulder and an inner bottle, the outer body shoulder and the outer body are blow molded into an outer bottle shoulder and an outer bottle, the first rib and the second The convex rib forms point welding with the inner wall of the outer bottle shoulder; the bottom center point of the inner layer bottle is welded with the bottom center point of the outer layer bottle; there is an air pressure space between the inner layer bottle and the outer layer bottle; the double wall The air flow passage of the embryo tube still remains in the double-walled container and communicates with the air pressure space; the outer layer bottle deforms inwardly and can elastically return to its original shape when externally pressurized; the inner layer bottle is gradually reduced in volume after being squeezed Deformation does not return to its original shape. A gas-controlled back-flipping lid combined with the double-walled container described in claim 6, the gas-controlled back-flipping lid comprising: a lid body, a linked flip-up lid connected to the lid body, a check valve provided in the lid body, and an injection part provided in the lid body; The cover body is a plastic molded part, including a top and a skirt vertically connected with the periphery of the top; an outer sealing ring, a short sealing ring and a long sealing ring are concentrically arranged on the lower surface of the top from the outside to the inside; the The skirt is provided with a notched internal thread, and the inner side of the skirt is provided with a ring buckle near the bottom end; the top is provided with an annular air groove and an annular installation groove; the annular installation groove surrounds a bearing surface; the The annular air groove is provided with an air flow hole; the center of the supporting surface is provided with an injection hole; The check valve is an elastic plastic molded part that can be physically deformed and restored to its original shape; the check valve includes an annular base, and the annular base extends radially outward and horizontally extends a flap in the shape of a sheet and can elastically move up and down; The annular base surrounds and connects a valve plate that can be elastically agitated up and down, and the periphery of the valve plate is provided with a peripheral injection hole; the check valve is installed in the annular installation groove of the cover body with the annular base, The valve plate contacts the bearing surface and seals the injection hole, and the valve extends toward the annular air groove; The injection part is installed in the cover body, the check valve is fixed between the cover body and the injection part; the injection part includes a nozzle; the injection part is provided with a position corresponding to the valve an air inlet under which the valve rests and shields the air inlet; The inner thread of the cap body is screwed with the outer thread of the bottle mouth; the outer sealing ring of the air-operated backstop cap is tightly attached to the outer corner of the outer bottle mouth, and the short sealing ring tightly seals and stops at the outer corner of the outer bottle mouth. The top edge of the outer bottle mouth, the long sealing ring protrudes into and close to the inner wall of the inner bottle mouth; the air inlet of the injection part, the annular air groove of the cap body, the The air flow hole and the air flow passage of the double-walled container are connected to form an air flow channel, and the air flow channel is communicated with the air pressure space of the double-walled container. A double-walled container and a gas-controlled backstop lid, comprising: A double-wall container includes an inner bottle mouth and an outer bottle mouth, the outer bottle mouth surrounds the inner bottle mouth; a bottle mouth eaves extend outward from the inner bottle mouth, and an inner bottle neck is formed under the bottle mouth eaves, An inner bottle shoulder is formed under the inner bottle neck, and an inner layer bottle is formed under the inner bottle shoulder; a plurality of longitudinal grooves are formed on the inner bottle shoulder; the bottle mouth eaves are provided with at least one air inlet connected to the inner bottle neck The inner wall surface of the outer bottle mouth is provided with an upwardly open receiving groove, and the receiving groove receives the bottle mouth eaves and forms a spot welding; the outer wall of the outer bottle mouth is provided with an external thread with a gap, and the outer thread is formed with a The outer bottle shoulder, an outer bottle is formed below the outer bottle shoulder; the inner wall surface of the outer bottle mouth is provided with several longitudinal guide grooves, the guide grooves extend extending to the outer bottle shoulder; there is an air pressure space between the inner bottle and the outer bottle; the air inlet, the inner neck, the groove and the guide groove form the air passage, and the air passage communicates with the Air pressure space; the outer layer bottle deforms inwardly and can elastically return to its original shape when it is pressed externally; the inner layer bottle is gradually reduced in volume and deformed without returning to its original shape after being squeezed; an air-controlled reverse flip cover, comprising a cover body, a linked flip-up cover connected with the cover body, a check valve arranged in the cover body, and an injection part arranged in the cover body; The cover body is a plastic molded part, including a top and a skirt vertically connected with the periphery of the top; an outer sealing ring, a short sealing ring and a long sealing ring are concentrically arranged on the lower surface of the top from the outside to the inside; the The skirt is provided with a notched internal thread; the top is provided with an annular air groove and an annular installation groove; the annular installation groove surrounds a supporting surface; the annular air groove is provided with an air flow hole; There is an injection hole in the center; The check valve is an elastic plastic molded part that can be physically deformed and restored to its original shape; the check valve includes an annular base, and the annular base extends radially outward and horizontally extends a flap in the shape of a sheet and can elastically move up and down; The annular base surrounds and connects a valve plate that can be elastically agitated up and down, and the periphery of the valve plate is provided with a peripheral injection hole; the check valve is installed in the annular installation groove of the cover body with the annular base, The valve plate contacts the bearing surface and seals the injection hole, and the valve extends toward the annular air groove; The injection part is installed in the cover body, the check valve is fixed between the cover body and the injection part; the injection part includes a nozzle; the injection part is provided with a position corresponding to the valve an air inlet under which the valve rests and shields the air inlet; The cap body is screwed together with the external thread of the double-walled container with the internal thread; the outer sealing ring of the air-operated anti-flip cap is tightly attached to the outer corner of the outer bottle mouth, and the short sealing ring tightly seals and stops at the The top edge of the outer bottle mouth, the long sealing ring protrudes into and abuts against the inner wall of the inner bottle mouth; the The air inlet, the annular air groove of the cover body, the air flow hole of the cover body, and the air flow passage of the double-wall container are connected to form an air flow channel, and the air flow channel communicates with the air flow channel of the double-wall container. Air pressure space. The double-walled container and its gas-controlled backstop flap according to claim 8, wherein the outer layer bottle has a wall thickness of 0.20-0.50 mm, and the inner layer bottle has a thickness of 0.05-0.25 mm. The double-walled container and its gas-controlled backstop flap according to claim 8, wherein the height of the double-walled container ranges from 100 mm to 250 mm. The double-walled container and its gas-operated backstop flap according to claim 8, wherein the outer bottle comprises a middle section, the middle section is connected to the outer bottle shoulder, and the middle section is connected to the outer bottle The lower section is formed at the junction of the middle section, the outer bottle shoulder and the lower section, respectively. The double-walled container and its gas-controlled reverse flip-top lid as claimed in claim 11, wherein the cross-sectional shape of the middle section orthogonal to the central axis of the outer bottle is circular, and the outer wall of the middle section is provided with a structure to enhance its structure. The most powerful axial rib. The double-walled container and its air-controlled reverse flip lid as claimed in claim 8, wherein the injection part comprises a horizontal covering part, an annular snap-fit wall formed on the bottom surface of the covering part near the periphery, and the formed A crown portion with a hollow interior protruding upward from the center of the cover portion, and the nozzle formed on the top surface of the crown portion and passing through the crown portion; the cover portion is provided with the air inlet; The annular buckle wall is buckled and fixed with an annular side wall of the cover body, and the injection part is fixed in the cover body; the crown portion surrounds the peripheral injection hole of the check valve and the valve plate, and the A distance is maintained between the crown portion, the peripheral injection hole and the valve plate, so that the valve plate can be elastically agitated up and down in it. The double-walled container and its gas-controlled backstop flap as claimed in claim 13, wherein the stopper The annular base of the return valve includes an outer annular wall and an inner annular wall, and the valve is provided radially on a part of the outer annular wall; the inner annular wall surrounds and connects the valve plate; the inner annular wall and the outer annular wall An annular embedded groove is formed between the walls; an annular embedded wall is formed on the bottom surface of the covering part of the injection part, the annular embedded wall is embedded in the embedded groove, and the check valve is fixed on the between the cover body and the injection part. A double-walled container comprising: An inner bottle mouth and an outer bottle mouth, the outer bottle mouth surrounds the inner bottle mouth; a bottle mouth eaves extend outward from the inner bottle diameter, an inner bottle neck is formed under the bottle mouth eaves, and an inner bottle neck is formed under the inner bottle mouth an inner bottle shoulder, an inner bottle is formed below the inner bottle shoulder; the inner bottle shoulder is formed with several longitudinal grooves; the eaves of the bottle mouth are provided with at least one air inlet connected to the inner bottle neck; An upwardly open receiving groove is arranged on the inner wall surface, and the receiving groove receives the eaves of the bottle mouth and forms a point-shaped welding; the outer wall of the outer bottle mouth is provided with an external thread with a gap, and an outer bottle shoulder is formed below the external thread, and the outer bottle neck is formed. An outer layer bottle is formed below the bottle shoulder; the inner wall surface of the outer bottle mouth is provided with several longitudinal guide grooves, and the guide grooves extend to the outer bottle shoulder; there is a pressure space between the inner layer bottle and the outer layer bottle; The air inlet, the inner neck, the groove and the guide groove form the air passage, and the air passage communicates with the air pressure space; the outer bottle deforms inwardly and can elastically return to its original shape when externally pressurized; When the inner bottle is squeezed, the volume is gradually reduced and the deformation does not return to its original state; An air-controlled backstop flip cover, comprising: a lid body, a linked flip-up lid connected to the lid body, a check valve provided in the lid body, and an injection part provided in the lid body; The cover body is a plastic molded part, including a top and a skirt vertically connected with the periphery of the top; an outer sealing ring, a short sealing ring and a long sealing ring are concentrically arranged on the lower surface of the top from the outside to the inside; the The skirt is provided with a notched internal thread; the top is provided with an annular air groove and an annular installation groove; the The annular installation groove surrounds a supporting surface; the annular air groove is provided with an air flow hole; the center of the supporting surface is provided with an injection hole; The check valve is an elastic plastic molded part that can be physically deformed and restored to its original shape; the check valve includes an annular base, and the annular base extends radially outward and horizontally extends a sheet-like valve that can elastically move up and down; The annular base surrounds and connects a valve plate that can be elastically agitated up and down, and the periphery of the valve plate is provided with a peripheral injection hole; the check valve is installed in the annular installation groove of the cover body with the annular base, The valve plate contacts the bearing surface and seals the injection hole, and the valve extends toward the annular air groove; The injection part is installed in the cover body, the check valve is fixed between the cover body and the injection part; the injection part includes a nozzle; the injection part is provided with a position corresponding to the valve an air inlet, the valve rests beneath and shields the air inlet.

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