CA2509336C - Laminated bottle - Google Patents
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- CA2509336C CA2509336C CA002509336A CA2509336A CA2509336C CA 2509336 C CA2509336 C CA 2509336C CA 002509336 A CA002509336 A CA 002509336A CA 2509336 A CA2509336 A CA 2509336A CA 2509336 C CA2509336 C CA 2509336C
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Abstract
Disclosed is a laminated bottle formed of at least two layers including an inner layer which is made of a flexible resin and may be peeled away from an outer resin layer to form an inner bag so that a content of the bottle may be discharged without adversely effecting the whole bottle. The bottle has a bonding band extending from a mouth to a bottom to partially bond the inner and outer layers; parts of the inner layer are bonded together at a rib in the bottom to form a slit between the inner and outer layers through which air may flow; and a lock portion is provided in the bottom for retaining the inner and outer layers together.
Description
LAMINATED BOTTLE
This is a divisional application of Canadian Patent Application No. 2,113,117 filed May 11, 1993.
Technical Field The present invention relates to a laminated bottle comprising at least two layers, and more particularly to a laminated bottle wherein its innermost layer may be freely peeled away from its outermost layer to form an independent inner bag. The present invention also relates to a pump device designed for use with a laminated bottle.
The laminated bottle and the pump device may be considered to be different inventions. Only the laminated bottle and a container having the laminated bottle in combination with the pump device are claimed in this divisional application.
Nevertheless, it should be understood that the expression "the present invention" applies to both the laminated bottle and the pump device.
Background Technology A laminated bottle is known, wherein the bottle comprises at least an outer layer and an inner layer bonded together integrally over their whole surfaces so that these two layers may not be peeled away.
It has been sometimes experienced that a pressure inside the bottle may be reduced due to the evaporation of contents, such as, for example, oxygen, long after the filling of the contents, even when the bottle is in a closed condition. Another type bottle is also known, wherein a pump is attached to a mouth portion of the bottle and the pump is actuated to expel the contents. In this type of - la -bottle, the pressure inside the bottle may be reduced as the contents are being emptied by the pump.
In such a case, as shown in Fig. 56, there may arise a problem that the conventional laminated bottle having its inner layer 1 and its outer layer 2, which are a principal body of the bottle, collapses, thereby deteriorating the commercial value of the product.
Moreover, the deformation may take place irregularly, and thus the contents may tend to build-up upon irregular portions on the inner layer which are created by deformation, even if the mouth portion is located to face downwardly, and thereby interfering with a metered and efficient removal of the contents.
It is a technical object of the present invention to prevent the outer shape of the bottle from being deformed, which would otherwise occur due to a reduced pressure inside the bottle.
Disclosure of the Invention The laminated bottle 'in accordance with the present invention has a construction described hereinbelow.
The present invention provides a laminated bottle, comprising a bottle mouth portion formed at an upper portion of a body portion and a bottom portion at a lower portion of the body, the bottle being formed of at least two layers, i.e., an outer layer made of synthetic resin and an inner layer made of flexible synthetic resin, wherein the inner layer of the bottle body portion and the outer layer adjacent to the inner layer are formed to be freely peelable, and at least a portion of the inner layer and the outer layer is bonded together by means of a bonding band, wherein the bonding band is provided along a direction in which the band faces from the bottle mouth portion toward the bottle bottom portion, the inner layers are bonded together at a rib on a bottom parting line to be formed in molding the bottle, the outer layers are formed so that they may form a slit through which air may flow between the outer layer and the inner layer without allowing the outer layers to contact each other, and a lock portion is provided at least a portion of the bottom of the bottle for retaining the outer and inner layers integrally.
In the present embodiment, it is only required that the inner layer may be freely peeled away.
Consequently, the number of innex and outer layers may be selected arbitrarily, as long as there are two or more layers.
By so arranging, in the laminated bottle of the present invention, any adverse affect may not be imposed upon the shape of the bottle for a long period after contents are filled, when the volume of content is reduced to lower the internal pressure inside the bottle, or when the bottle internal pressure is reduced by emptying the content by means of pump etc., because the inner layer is pulled to separate away from the outer layer under a negative pressure, and only the inner layer may become an independent bag which may shrink and be deformed.
In order to ensure a complete removal of the content from the bottle with no residue, a satisfactory result may not be derived from the shrinkage of the inner bag which is formed from an inner layer.
Thus, it becomes necessary to provide any restriction or control against the shrinkage of the inner bag which is formed from an inner layer. It is therefore an object of the present invention to provide means of physically controlling such shrinkage or a manner in which the inner layer may be collapsed.
Accordingly, the present invention provides a laminated bottle, comprising a bottle mouth at an upper portion of a bottle body and a bottom at a lower portion of the body, the bottle consisting of at least two layers i.e., an outer layer and an inner layer, wherein the inner layer of the bottle body and its adjacent outer layer are made to be able to be freely pee1ed away from each other, and at least one of the inner layer and the outer layer is bonded together by means of a bonding band, and wherein the bond band is provided at the bottle body to run from the bottle mouth portion toward its bottom portion.
When the bottle has an elliptical shape in cross-section, it is more preferable ,that the bonding band is provided on the body which is located at opposite ends of the major axis of the elliptic. Though at least bond band is provided, a plurality of such bands may be selected.
The bottle may be molded in accordance with a so-called parison-blow process, but inner layers are bonded with each other at a rib on a bottom parting line formed during a molding step, while the outer layers are not bonded with each other. Thus, a slit through which air can be withdrawn is formed between the inner and outer layers.
Describing in more detail, it may appear that the outer layers are bonded each other temporarily during a molding step, but they may be easily cracked along the parting line to form the slit, by pushing the parting line from the outside using a push-rod. In this way, it is possible to withdraw air as the inner layer is deformed, and thereby preventing deformation of the outer layer which would otherwise occur due to a close contact between the outer and inner layers.
Furthermore, the bottle may be provided at least partially thereof with a lock portion which acts to retain the outer and inner layers to be integral. Thus, because the bottom portion is locked against the bottom portion of the outer layer, when the bag made from the inner layer shrinks, the inner layer may not be lifted-up at its bottom portion, and accordingly the bag made from the inner layer may be shrunk to a preferable configuration.
Moreover, if the bottom portion is lifted up to an interior of the bottle, a slit in the bottom portion may be spaced away from the floor surface upon which the bottle may be laid, and thereby making it possible to prevent water which flows over the floor from endearing into a space between the outer and inner layers, in an occasion, such as, for example, when the present bottle is used in a bath room.
Laminated parisons are made beforehand during the manufacture of the bottle. During this manufacture, a bonding layer is provided in a band-like configuration between inner and outer layers. Laminated parisons are sandwiched using a split die in which the bottle may be molded, and the bottle is produced by supplying air into the laminated parisons. After production, the slit is formed by impacting upon the bottom portion, which is carried out as above-described.
With the laminated bottle of the present invention, no adverse effect may be imposed upon the shape of the bottle for a long period after contents are filled, when the volume of content is reduced to lower the internal pressure inside the bottle, or when a pump is attached to the mouth portion to pour out the contents, because the inner layer is pulled away from the outer layer to be separated under a negative pressure, and only the inner layer may become an independent bag which may shrink and deform.
Additionally, a deformed configuration can be predetermined for the bottle when the inner layer is deformed by bonding the inner and outer layers at their particular portions beforehand, and thus it allows an easy and efficient removal of the contents from the bottle, even when the inner layer is deformed.
When the inner and outer layers are bonded together at least partially by means of an adhesive, and if a single length of a bonding band is formed at least on the body portion along a direction extending from the bottle mouth portion toward the bottom portion, the shrinkage of the bag which is formed from the inner layer at the bonding band may be restricted, and thereby allowing one to specify the deformation shape for achieving an efficient removal of the contents.
In case that the lock portion is provided at least partially on the bottom portion for retaining the outer and inner layers integrally, the bag which is formed from the inner layer and which shrinks may not be lifted.up off its bottom portion, whereby contributing much to an efficient removal of the contents.
The laminated bottle in accordance with the present invention is preferred for use in conjunction with a pump device which will be described hereinbelow.
Where the pump device having a suction pipe which depends into the bottle is attached to the laminated bottle of the present invention, as shown in Fig. 41, no problem _ 7 _ will be encountered during an early stage of application, but as the volume of contents decreases, the bag made from the inner layer tends to intimately adhere to the suction pipe, thereby interfering with the smooth flow of the contents and closing off the opened end of the suction pipe to prevent the removal of the content.
By allowing the bag made from the inner layer to intimately contact with the suction portion at the time of emptying, it becomes possible to prevent the contents which are present in the upper section of the bottle from falling down to the tip end of the suction pipe, and thus the contents may build-up in the upper section of the bottle.
To solve such a problem, it is desirable to provide the pump device of such a construction as described hereinbelow.
Such a pump device comprises a suction portion which is to be inserted into a vessel and opened, and an operable portion which is exposed to an outside of the container. When in use, an area around the suction portion may be enclosed by a bag in which the contents are contained and which is loaded into the container. In a first embodiment, the suction portion is tubular and has a concaved or convexed portion extending in a longitudinal direction on a circumferential surface thereof, wherein a plurality of suction holes opened in a lateral surface are defined at an end of the suction portion.
It may be probable that the bag which has been shrunk may enter into contact with the lower end portion of the suction portion and may be broken, and thus it may be preferable to form the lower end surface of the suction portion in a curved configuration.
_ g _ In this case, an annulus can be outfitted to an area closely adjacent to a base portion of the suction portion, and the annulus may be provided with a window which is parallel with its axis.
In a second embodiment, in the construction of the pump as described above, the suction portion is opened at a lower end of the pump, and the pump device may also comprise a rod which opens to a lower end of the operable portion and extend from an area in the vicinity of the suction portion.
The rod may be constructed with such a cross-section in which sheets extend in two or more directions.
It may also be probable that this rod comes into contact with the lower end of the bag and the bag is broken when the bag is shrunk, and so it would be preferable that the rod is formed in a curled configuration.
Furthermore, an annulus may be outfitted to a section which extends form the suction portion~to the operable portion, and the annulus may be provided with a window which runs parallel to its axis.
It is also preferable that a tubular connecting portion is provided at the suction portion itself for coupling with the operable portion, and a groove portion may be provided along a circumferential surface of this connecting portion so that the contents may flow therethrough.
_ g _ In accordance with the first embodiment, a clearance is formed between the bag which is loaded into the container and the suction portion by means. of the concaved or convexed portion which is provided on an area around the suction portion, and thus the bag does not intimately contact with the suction portion.
On the other hand, no adverse effect may be imposed upon the shape of the bottle for a long period after contents are filled, in the laminated bottle of the present invention, when the volume of content is reduced to lower the internal pressure inside the'bottle, or when the pump is attached to the mouth portion to empty the contents, because the inner layer is pulled away from the outer layer to be separated under a negative pressure, and only the inner layer may become an independent bag which may shrink and deform. In such a case, the inner layer which corresponds with the bag to be peeled away does not intimately contact with the suction portion.
An oiling passage may thus be ensured even when the volume of the contents reduce, and consequently a substantially whole content can be discharged smoothly.
In the first and the second embodiments, it is possible to prevent the bag from being broken by forming the lower end of suction portion or of the rod even in a curved configuration, even if the shrunk bag may contact with the lower end .
Because the need of separately arranging a annulus can be eliminated by forming a connecting portion with the pump itself to be in the suction portion and by forming a longitudinal groove in the circumference of the connecting portion, the number of parts can be reduced.
ZO Brief Description of the Drawings Fig . 1 is a pictorial view showing a laminated bottle in the f first embodiment of the present invention;
Fig. 2 is a cross-sectional view showing how the bag which is formed from the inner layer is collapsed when it is provided with a single bonding band; .
Fig. 3 is a cross-sectional view showing how the bag which is formed from the inner layer is collapsed when it is provided with two bonding bands in an opposing relationship;
. Fig . 4 is a cross-sectional view showing the rib ( pinch-of f portion ) on the parting line on the bottle bottom portion; Fig. 5 is a cross-sectional view showing the rib ( pinch-of f portion ) on the parting line on the bottle bottom portion and also illustrating the slit;
Fig. 6 is a front elevation of the laminated bottle according to the first embodiment;
Fig. 7 is a bottom plan view of the laminated bottle according to the first embodiment;
Fig. 8 is a cross-sectional taken view along the line C-C in Fig . 7 ;
Fig . 9 is a cross-sectional taken view along the line B-B in Fig. 7, Fig. 10 is a front elevation showing how the bag which is formed from the inner layer is collapsed;
Fig. I1 is a cross-sectional view showing how the bag which is formed from the inner layer is collapsed;
Fig. 12 is a front elevation showing how the bag which is formed from the inner layer is collapsed in the bottle without a lock portion;
Fig. 13 is a cross-sectional view showing how the bag which is formed from the inner .layer is collapsed in the bottle without a lock portion;
Fig. 14 is a bottom front elevation of the laminated bottle in the second embodiment;
Fig. 15 is a bottom plan view of the laminated bottle in the second embodiment;
Fig. 16 is a bottom front elevation of the laminated bottle in the third embodiment;
Fig . 17 is a bottom plan view of the laminated bottle in the third embodiment;
Fig. 18 is a cross-sectional view of the lock portion of the laminated bottle in the third embodiment;
Fig. 19 is a bottom front elevation of the laminated bottle in the fourth embodiment;
Fig. 20 is a bottom plan view of the laminated bottle in the fourth embodiment;
Fig. 21 is a bottom front elevation of the laminated bottle in the fifth embodiment;
Fig. 22 is a bottom plan view of the laminated bottle in the fifth embodiment;
Fig. 23 is a partial cross-sectional view of essential parts the pump device in the sixth embodiment;
of Fig. 24 is a plan view of the pump device in the sixth embodiment;
Fig. 25 is a bottom plan view of the pump device in the sixth bodiment;
em Fig . 26 is a partial cross-sectional view of the pump device n the seventh embodiment;
i Fig . 27 is a plan view of the pump device in the seventh embodiment;
Fig. 28 is a bottom plan view of the pump device in the seventh embodiment;
Fig. 29 is a partial cross-.sectional view of essential parts the pump device in the eighth embodiment;
of Fig . 30 is a plan view of the pump device in the eighth embodiment;
Fig. 31 is a bottom plan view of the pump device in the eighth embodiment;
Fig. 32 is a partial cross-sectional view of essential parts of the pump device in the ninth embodiment;
Fig. 33 is a plan view of the pump device in the ninth embodiment;
Fig . 34 is a bottom plan view of the pump device in the ninth embodiment;
Fig . 35 is a partial cross-sectional view of ~ essential parts of the pump device in the tenth embodiment;
Fig. 36 is a plan view of the pump device in the tenth embodiment;
Fig: 37 is a bottom plan view of the pump device in the tenth embodiment; .
Fig. 38 is a partial cross-sectional view of essential parts of the pump device in the eleventh embodiment;
Fig . 39 is a plan view of the pump device in the eleventh embodiment;
Fig . 40 is a bottom plan view of the pump device in the eleventh embodiment;
Fig. 41 is a side view showing the container with the pump;
Fig. 42 is a partial cross-sectional view of essential parts of the pump device in the twelfth embodiment;
Fig. 43 is a partial cross-sectional view of essential parts of the pump device in the thirteenth embodiment;
Fig. 44 is aside view of the annulus in the fourteenth embodiment;
Fig. 45 is a side view of the annulus in the fourteenth embodiment;
Fig . 46 is a perspective view of the annulus in the fourteenth embodiment;
Fig. 47 is a lateral end view of annulus in the fourteenth embodiment;
Fig. 48 is a partial cross-sectional view of essential parts of the pump device in the fourteenth embodiment;
Fig. 49 is a partial cross-sectional view of essential parts of the pump device in the fifteenth embodiment;
Fig. 50 is a partial cross-sectional view of .essential parts of the pump device in the sixteenth embodiment;
Fig. 51 is a partial cross-sectional view of essenti8l parts of the pump device in the seventeenth embodiment;
Fig. 52 is a plan view of the pump device in the seventeenth embodiment;
Fig . 53 is a bottom plan view of the pump device in the seventeenth embodiment;
Fig. 54 is a cross-sectional view showing a laminated parison while the laminated bottle of the present invention is being manufactured:
Fig. 55 is a view explaining the mouth structure of the traditional laminated bottle; and Fig . 56 is a view explaining the deformed state of the traditional laminated bottle.
Best Mode for Carrying Out The Invention [ Embodiments 1 - 5 Fig. 1 shows the first embodiment 1 of the present invention, wherein there is provided a laminated bottle.
The bottle consists of inner and outer layers 1 and 2. The bottle comprises a bottle mouth portion at ~~9z9-5 the upper portion of the body with circular or rectangular cross-section, and a bottom portion at the lower portion of the body. The inner layer 1 and the outer layer 2 are bonded together partially. The outer layer 2 is made from high-density polyethylene, and the inner layer 1 is formed from a nylon layer and a further inner resin layer. The bond layer 3 is formed from Admer (trade mark).
Admer is an adhesive formulated from a modified polyolefin made by Mitsui Petrochemical Industry Co., Ltd.
The inner,layer 1 can form the bag by itself when it is peeled away from the outer layer'2.
The mouth portion 4 of the bottle is provided with a pump (not shown) through which a content may be discharged. A pipe is provided through which the contents are sucked such that the pipe may depend from the pump body toward the lower portion of the bottle.
The material which may be used in the present invention has been selected initially from high-density polyolefin (HDPE) for the outer layer 2, and nylon for the inner layer 1. This arrangement may ensure a sufficient peeling between inner and outer layers, but it may not be embodied for normal contents since nylon has an increased water permeability. Thus, it may be advisable to use a further resin layer, for example, an Admer (trade mark) layer 1a inside the nylon serving as an inner layer 1. If the thickness of the inner layer is excessive, the bottle is only slightly deformed at the shoulder when the contents are discharged through the pump, and the bottle may not be collapsed, resulting in that residue amount of the contents may be excessive. The thinner the inner layer thickness is, the faster the speed is at which the bottle is collapsed.
Thus, this results in the increased return speed of the pump and a smooth pump operation.
When the inner layer 1 is formed of a 50~,m nylon layer and a 50~.m Admer layer, a satisfactory result is obtained from the viewpoint of the collapse of the bottle, and the amount of residues.
As shown in Fig. 1, the bonding layer 3 is provided to run vertically from the bottle mouth 4 to the bottle bottom portion 5 in a band-like configuration passing partially around the outer circumference of the inner layer 1, i.e., the inner circumference of the outer layer 2.
By so arranging, the outer and inner layers 2 and 1 are partially bonded together by means of the bonding layer 3.
That is, the outer layer 2 and the inner layer 1 can be peeled away from each other, except for the area of the bond layer 3. A single bonding band is provided which runs from the mouth portion to the bottom portion 5 via the body portion in a direction extending from the bottle mouth portion 4 to the bottom portion 5.
When the outer layer 2 and the inner layer 1 are bonded together by means of a single bonding band in the _ 18 . -above-described manner, the bag which is formed from the inner layer 1 which has been peeled away. from the outer layer 2 as shown in Fig. 2 is stripped away uniformly from the outer layer 2 and is collapsed in a flat and clean manner at the central portion of the bottle.
On the contrary, when two bonding bands 'are provided in opposing relationship each other which extend from the mouth portion 4 to the ,bottom portion 5 as shown in Fig . 3 , the inner layer 1 may be peeled away initially to move toward its opposite surface to the opposite inner side of the bottle if the one side. surface on the inner layer is stripped, and the bag made from the inner layer 1 is caused to collapse. This occurs as a result of inconsistent wall thickness of the inner wall 1 ( 0. O1 0 . 02 mm ) and short and long circumferences due to offset of two bonding bands . The layers are usually peeled away from the circumferential area of the thin wall thickness side, or a longer circumferential side. If the layer; is collapsed in such a manner as above-described, the bag which is formed from the inner bag which has been collapsed acts to push the suction pipe which depends from the body to be bent from a lateral direction, and thereby imposing an adverse effect even upon the cylinder piston o f the pump body .
The bottle of the present invention is manufactured in the following sequence.
First, laminated parisons having the cross-section as shown in Fig . 54 are in j ection molded . The bonding layer 3 is provided along the entire length of the laminated parisons. Then, the laminated parisons are sandwiched in position using a pair of blow-mold dies, and the bottle is formed in accordance with the Blow Molding Process as shown in Fig . 1.
That is, while the laminated parisona are sandwiched in position by means of a pair of blow molding dies, and one end of the laminated parison is bitten off by means of die to provide a bottle bottom: The other end of the laminated parison is cut-off and then an air inserting core metal is inserted into the other wend of the laminated parison. Air is supplied from the core metal into the laminated parison for forming the product in accordance with the blow molding process.
At this instance, the bottom surface of the bottle bottom is bitten off by means of die. This portion (pinch-off portion) which has been bitten-off lies on the parting line of the die, and this biting-off produces a rib 11 which projects slightly upwardly. This rib which has been produced by bit-of f is shown in Fig . 4 and Fig . 5 , and inner layers 1 may contact with each other in this rib when they are bitten-off, whereas the outer layers 2 may not contact with each other. Thus, an area between the outer layer 2 and the inner layer 1 is caused to crack along the parting line to produce a slit 12, when the area is impacted by, for example, stamping the bottom surface with a rod etc. , after the molding. As a result, an air is caused to f low into a gap between the inner layer 1 and an outer layer 2 passing through the slit 12.
Furthermore, the bottom surface is more recessed toward the inner side of the bottle at a portion where said slit 12 is produced, compared to its circumferential portion. Thus it may be most preferred to form the portion by bottoming-up. When the recess 14 is formed at the central portion of the bottom as shown in Fig . 6 and Fig .
This is a divisional application of Canadian Patent Application No. 2,113,117 filed May 11, 1993.
Technical Field The present invention relates to a laminated bottle comprising at least two layers, and more particularly to a laminated bottle wherein its innermost layer may be freely peeled away from its outermost layer to form an independent inner bag. The present invention also relates to a pump device designed for use with a laminated bottle.
The laminated bottle and the pump device may be considered to be different inventions. Only the laminated bottle and a container having the laminated bottle in combination with the pump device are claimed in this divisional application.
Nevertheless, it should be understood that the expression "the present invention" applies to both the laminated bottle and the pump device.
Background Technology A laminated bottle is known, wherein the bottle comprises at least an outer layer and an inner layer bonded together integrally over their whole surfaces so that these two layers may not be peeled away.
It has been sometimes experienced that a pressure inside the bottle may be reduced due to the evaporation of contents, such as, for example, oxygen, long after the filling of the contents, even when the bottle is in a closed condition. Another type bottle is also known, wherein a pump is attached to a mouth portion of the bottle and the pump is actuated to expel the contents. In this type of - la -bottle, the pressure inside the bottle may be reduced as the contents are being emptied by the pump.
In such a case, as shown in Fig. 56, there may arise a problem that the conventional laminated bottle having its inner layer 1 and its outer layer 2, which are a principal body of the bottle, collapses, thereby deteriorating the commercial value of the product.
Moreover, the deformation may take place irregularly, and thus the contents may tend to build-up upon irregular portions on the inner layer which are created by deformation, even if the mouth portion is located to face downwardly, and thereby interfering with a metered and efficient removal of the contents.
It is a technical object of the present invention to prevent the outer shape of the bottle from being deformed, which would otherwise occur due to a reduced pressure inside the bottle.
Disclosure of the Invention The laminated bottle 'in accordance with the present invention has a construction described hereinbelow.
The present invention provides a laminated bottle, comprising a bottle mouth portion formed at an upper portion of a body portion and a bottom portion at a lower portion of the body, the bottle being formed of at least two layers, i.e., an outer layer made of synthetic resin and an inner layer made of flexible synthetic resin, wherein the inner layer of the bottle body portion and the outer layer adjacent to the inner layer are formed to be freely peelable, and at least a portion of the inner layer and the outer layer is bonded together by means of a bonding band, wherein the bonding band is provided along a direction in which the band faces from the bottle mouth portion toward the bottle bottom portion, the inner layers are bonded together at a rib on a bottom parting line to be formed in molding the bottle, the outer layers are formed so that they may form a slit through which air may flow between the outer layer and the inner layer without allowing the outer layers to contact each other, and a lock portion is provided at least a portion of the bottom of the bottle for retaining the outer and inner layers integrally.
In the present embodiment, it is only required that the inner layer may be freely peeled away.
Consequently, the number of innex and outer layers may be selected arbitrarily, as long as there are two or more layers.
By so arranging, in the laminated bottle of the present invention, any adverse affect may not be imposed upon the shape of the bottle for a long period after contents are filled, when the volume of content is reduced to lower the internal pressure inside the bottle, or when the bottle internal pressure is reduced by emptying the content by means of pump etc., because the inner layer is pulled to separate away from the outer layer under a negative pressure, and only the inner layer may become an independent bag which may shrink and be deformed.
In order to ensure a complete removal of the content from the bottle with no residue, a satisfactory result may not be derived from the shrinkage of the inner bag which is formed from an inner layer.
Thus, it becomes necessary to provide any restriction or control against the shrinkage of the inner bag which is formed from an inner layer. It is therefore an object of the present invention to provide means of physically controlling such shrinkage or a manner in which the inner layer may be collapsed.
Accordingly, the present invention provides a laminated bottle, comprising a bottle mouth at an upper portion of a bottle body and a bottom at a lower portion of the body, the bottle consisting of at least two layers i.e., an outer layer and an inner layer, wherein the inner layer of the bottle body and its adjacent outer layer are made to be able to be freely pee1ed away from each other, and at least one of the inner layer and the outer layer is bonded together by means of a bonding band, and wherein the bond band is provided at the bottle body to run from the bottle mouth portion toward its bottom portion.
When the bottle has an elliptical shape in cross-section, it is more preferable ,that the bonding band is provided on the body which is located at opposite ends of the major axis of the elliptic. Though at least bond band is provided, a plurality of such bands may be selected.
The bottle may be molded in accordance with a so-called parison-blow process, but inner layers are bonded with each other at a rib on a bottom parting line formed during a molding step, while the outer layers are not bonded with each other. Thus, a slit through which air can be withdrawn is formed between the inner and outer layers.
Describing in more detail, it may appear that the outer layers are bonded each other temporarily during a molding step, but they may be easily cracked along the parting line to form the slit, by pushing the parting line from the outside using a push-rod. In this way, it is possible to withdraw air as the inner layer is deformed, and thereby preventing deformation of the outer layer which would otherwise occur due to a close contact between the outer and inner layers.
Furthermore, the bottle may be provided at least partially thereof with a lock portion which acts to retain the outer and inner layers to be integral. Thus, because the bottom portion is locked against the bottom portion of the outer layer, when the bag made from the inner layer shrinks, the inner layer may not be lifted-up at its bottom portion, and accordingly the bag made from the inner layer may be shrunk to a preferable configuration.
Moreover, if the bottom portion is lifted up to an interior of the bottle, a slit in the bottom portion may be spaced away from the floor surface upon which the bottle may be laid, and thereby making it possible to prevent water which flows over the floor from endearing into a space between the outer and inner layers, in an occasion, such as, for example, when the present bottle is used in a bath room.
Laminated parisons are made beforehand during the manufacture of the bottle. During this manufacture, a bonding layer is provided in a band-like configuration between inner and outer layers. Laminated parisons are sandwiched using a split die in which the bottle may be molded, and the bottle is produced by supplying air into the laminated parisons. After production, the slit is formed by impacting upon the bottom portion, which is carried out as above-described.
With the laminated bottle of the present invention, no adverse effect may be imposed upon the shape of the bottle for a long period after contents are filled, when the volume of content is reduced to lower the internal pressure inside the bottle, or when a pump is attached to the mouth portion to pour out the contents, because the inner layer is pulled away from the outer layer to be separated under a negative pressure, and only the inner layer may become an independent bag which may shrink and deform.
Additionally, a deformed configuration can be predetermined for the bottle when the inner layer is deformed by bonding the inner and outer layers at their particular portions beforehand, and thus it allows an easy and efficient removal of the contents from the bottle, even when the inner layer is deformed.
When the inner and outer layers are bonded together at least partially by means of an adhesive, and if a single length of a bonding band is formed at least on the body portion along a direction extending from the bottle mouth portion toward the bottom portion, the shrinkage of the bag which is formed from the inner layer at the bonding band may be restricted, and thereby allowing one to specify the deformation shape for achieving an efficient removal of the contents.
In case that the lock portion is provided at least partially on the bottom portion for retaining the outer and inner layers integrally, the bag which is formed from the inner layer and which shrinks may not be lifted.up off its bottom portion, whereby contributing much to an efficient removal of the contents.
The laminated bottle in accordance with the present invention is preferred for use in conjunction with a pump device which will be described hereinbelow.
Where the pump device having a suction pipe which depends into the bottle is attached to the laminated bottle of the present invention, as shown in Fig. 41, no problem _ 7 _ will be encountered during an early stage of application, but as the volume of contents decreases, the bag made from the inner layer tends to intimately adhere to the suction pipe, thereby interfering with the smooth flow of the contents and closing off the opened end of the suction pipe to prevent the removal of the content.
By allowing the bag made from the inner layer to intimately contact with the suction portion at the time of emptying, it becomes possible to prevent the contents which are present in the upper section of the bottle from falling down to the tip end of the suction pipe, and thus the contents may build-up in the upper section of the bottle.
To solve such a problem, it is desirable to provide the pump device of such a construction as described hereinbelow.
Such a pump device comprises a suction portion which is to be inserted into a vessel and opened, and an operable portion which is exposed to an outside of the container. When in use, an area around the suction portion may be enclosed by a bag in which the contents are contained and which is loaded into the container. In a first embodiment, the suction portion is tubular and has a concaved or convexed portion extending in a longitudinal direction on a circumferential surface thereof, wherein a plurality of suction holes opened in a lateral surface are defined at an end of the suction portion.
It may be probable that the bag which has been shrunk may enter into contact with the lower end portion of the suction portion and may be broken, and thus it may be preferable to form the lower end surface of the suction portion in a curved configuration.
_ g _ In this case, an annulus can be outfitted to an area closely adjacent to a base portion of the suction portion, and the annulus may be provided with a window which is parallel with its axis.
In a second embodiment, in the construction of the pump as described above, the suction portion is opened at a lower end of the pump, and the pump device may also comprise a rod which opens to a lower end of the operable portion and extend from an area in the vicinity of the suction portion.
The rod may be constructed with such a cross-section in which sheets extend in two or more directions.
It may also be probable that this rod comes into contact with the lower end of the bag and the bag is broken when the bag is shrunk, and so it would be preferable that the rod is formed in a curled configuration.
Furthermore, an annulus may be outfitted to a section which extends form the suction portion~to the operable portion, and the annulus may be provided with a window which runs parallel to its axis.
It is also preferable that a tubular connecting portion is provided at the suction portion itself for coupling with the operable portion, and a groove portion may be provided along a circumferential surface of this connecting portion so that the contents may flow therethrough.
_ g _ In accordance with the first embodiment, a clearance is formed between the bag which is loaded into the container and the suction portion by means. of the concaved or convexed portion which is provided on an area around the suction portion, and thus the bag does not intimately contact with the suction portion.
On the other hand, no adverse effect may be imposed upon the shape of the bottle for a long period after contents are filled, in the laminated bottle of the present invention, when the volume of content is reduced to lower the internal pressure inside the'bottle, or when the pump is attached to the mouth portion to empty the contents, because the inner layer is pulled away from the outer layer to be separated under a negative pressure, and only the inner layer may become an independent bag which may shrink and deform. In such a case, the inner layer which corresponds with the bag to be peeled away does not intimately contact with the suction portion.
An oiling passage may thus be ensured even when the volume of the contents reduce, and consequently a substantially whole content can be discharged smoothly.
In the first and the second embodiments, it is possible to prevent the bag from being broken by forming the lower end of suction portion or of the rod even in a curved configuration, even if the shrunk bag may contact with the lower end .
Because the need of separately arranging a annulus can be eliminated by forming a connecting portion with the pump itself to be in the suction portion and by forming a longitudinal groove in the circumference of the connecting portion, the number of parts can be reduced.
ZO Brief Description of the Drawings Fig . 1 is a pictorial view showing a laminated bottle in the f first embodiment of the present invention;
Fig. 2 is a cross-sectional view showing how the bag which is formed from the inner layer is collapsed when it is provided with a single bonding band; .
Fig. 3 is a cross-sectional view showing how the bag which is formed from the inner layer is collapsed when it is provided with two bonding bands in an opposing relationship;
. Fig . 4 is a cross-sectional view showing the rib ( pinch-of f portion ) on the parting line on the bottle bottom portion; Fig. 5 is a cross-sectional view showing the rib ( pinch-of f portion ) on the parting line on the bottle bottom portion and also illustrating the slit;
Fig. 6 is a front elevation of the laminated bottle according to the first embodiment;
Fig. 7 is a bottom plan view of the laminated bottle according to the first embodiment;
Fig. 8 is a cross-sectional taken view along the line C-C in Fig . 7 ;
Fig . 9 is a cross-sectional taken view along the line B-B in Fig. 7, Fig. 10 is a front elevation showing how the bag which is formed from the inner layer is collapsed;
Fig. I1 is a cross-sectional view showing how the bag which is formed from the inner layer is collapsed;
Fig. 12 is a front elevation showing how the bag which is formed from the inner layer is collapsed in the bottle without a lock portion;
Fig. 13 is a cross-sectional view showing how the bag which is formed from the inner .layer is collapsed in the bottle without a lock portion;
Fig. 14 is a bottom front elevation of the laminated bottle in the second embodiment;
Fig. 15 is a bottom plan view of the laminated bottle in the second embodiment;
Fig. 16 is a bottom front elevation of the laminated bottle in the third embodiment;
Fig . 17 is a bottom plan view of the laminated bottle in the third embodiment;
Fig. 18 is a cross-sectional view of the lock portion of the laminated bottle in the third embodiment;
Fig. 19 is a bottom front elevation of the laminated bottle in the fourth embodiment;
Fig. 20 is a bottom plan view of the laminated bottle in the fourth embodiment;
Fig. 21 is a bottom front elevation of the laminated bottle in the fifth embodiment;
Fig. 22 is a bottom plan view of the laminated bottle in the fifth embodiment;
Fig. 23 is a partial cross-sectional view of essential parts the pump device in the sixth embodiment;
of Fig. 24 is a plan view of the pump device in the sixth embodiment;
Fig. 25 is a bottom plan view of the pump device in the sixth bodiment;
em Fig . 26 is a partial cross-sectional view of the pump device n the seventh embodiment;
i Fig . 27 is a plan view of the pump device in the seventh embodiment;
Fig. 28 is a bottom plan view of the pump device in the seventh embodiment;
Fig. 29 is a partial cross-.sectional view of essential parts the pump device in the eighth embodiment;
of Fig . 30 is a plan view of the pump device in the eighth embodiment;
Fig. 31 is a bottom plan view of the pump device in the eighth embodiment;
Fig. 32 is a partial cross-sectional view of essential parts of the pump device in the ninth embodiment;
Fig. 33 is a plan view of the pump device in the ninth embodiment;
Fig . 34 is a bottom plan view of the pump device in the ninth embodiment;
Fig . 35 is a partial cross-sectional view of ~ essential parts of the pump device in the tenth embodiment;
Fig. 36 is a plan view of the pump device in the tenth embodiment;
Fig: 37 is a bottom plan view of the pump device in the tenth embodiment; .
Fig. 38 is a partial cross-sectional view of essential parts of the pump device in the eleventh embodiment;
Fig . 39 is a plan view of the pump device in the eleventh embodiment;
Fig . 40 is a bottom plan view of the pump device in the eleventh embodiment;
Fig. 41 is a side view showing the container with the pump;
Fig. 42 is a partial cross-sectional view of essential parts of the pump device in the twelfth embodiment;
Fig. 43 is a partial cross-sectional view of essential parts of the pump device in the thirteenth embodiment;
Fig. 44 is aside view of the annulus in the fourteenth embodiment;
Fig. 45 is a side view of the annulus in the fourteenth embodiment;
Fig . 46 is a perspective view of the annulus in the fourteenth embodiment;
Fig. 47 is a lateral end view of annulus in the fourteenth embodiment;
Fig. 48 is a partial cross-sectional view of essential parts of the pump device in the fourteenth embodiment;
Fig. 49 is a partial cross-sectional view of essential parts of the pump device in the fifteenth embodiment;
Fig. 50 is a partial cross-sectional view of .essential parts of the pump device in the sixteenth embodiment;
Fig. 51 is a partial cross-sectional view of essenti8l parts of the pump device in the seventeenth embodiment;
Fig. 52 is a plan view of the pump device in the seventeenth embodiment;
Fig . 53 is a bottom plan view of the pump device in the seventeenth embodiment;
Fig. 54 is a cross-sectional view showing a laminated parison while the laminated bottle of the present invention is being manufactured:
Fig. 55 is a view explaining the mouth structure of the traditional laminated bottle; and Fig . 56 is a view explaining the deformed state of the traditional laminated bottle.
Best Mode for Carrying Out The Invention [ Embodiments 1 - 5 Fig. 1 shows the first embodiment 1 of the present invention, wherein there is provided a laminated bottle.
The bottle consists of inner and outer layers 1 and 2. The bottle comprises a bottle mouth portion at ~~9z9-5 the upper portion of the body with circular or rectangular cross-section, and a bottom portion at the lower portion of the body. The inner layer 1 and the outer layer 2 are bonded together partially. The outer layer 2 is made from high-density polyethylene, and the inner layer 1 is formed from a nylon layer and a further inner resin layer. The bond layer 3 is formed from Admer (trade mark).
Admer is an adhesive formulated from a modified polyolefin made by Mitsui Petrochemical Industry Co., Ltd.
The inner,layer 1 can form the bag by itself when it is peeled away from the outer layer'2.
The mouth portion 4 of the bottle is provided with a pump (not shown) through which a content may be discharged. A pipe is provided through which the contents are sucked such that the pipe may depend from the pump body toward the lower portion of the bottle.
The material which may be used in the present invention has been selected initially from high-density polyolefin (HDPE) for the outer layer 2, and nylon for the inner layer 1. This arrangement may ensure a sufficient peeling between inner and outer layers, but it may not be embodied for normal contents since nylon has an increased water permeability. Thus, it may be advisable to use a further resin layer, for example, an Admer (trade mark) layer 1a inside the nylon serving as an inner layer 1. If the thickness of the inner layer is excessive, the bottle is only slightly deformed at the shoulder when the contents are discharged through the pump, and the bottle may not be collapsed, resulting in that residue amount of the contents may be excessive. The thinner the inner layer thickness is, the faster the speed is at which the bottle is collapsed.
Thus, this results in the increased return speed of the pump and a smooth pump operation.
When the inner layer 1 is formed of a 50~,m nylon layer and a 50~.m Admer layer, a satisfactory result is obtained from the viewpoint of the collapse of the bottle, and the amount of residues.
As shown in Fig. 1, the bonding layer 3 is provided to run vertically from the bottle mouth 4 to the bottle bottom portion 5 in a band-like configuration passing partially around the outer circumference of the inner layer 1, i.e., the inner circumference of the outer layer 2.
By so arranging, the outer and inner layers 2 and 1 are partially bonded together by means of the bonding layer 3.
That is, the outer layer 2 and the inner layer 1 can be peeled away from each other, except for the area of the bond layer 3. A single bonding band is provided which runs from the mouth portion to the bottom portion 5 via the body portion in a direction extending from the bottle mouth portion 4 to the bottom portion 5.
When the outer layer 2 and the inner layer 1 are bonded together by means of a single bonding band in the _ 18 . -above-described manner, the bag which is formed from the inner layer 1 which has been peeled away. from the outer layer 2 as shown in Fig. 2 is stripped away uniformly from the outer layer 2 and is collapsed in a flat and clean manner at the central portion of the bottle.
On the contrary, when two bonding bands 'are provided in opposing relationship each other which extend from the mouth portion 4 to the ,bottom portion 5 as shown in Fig . 3 , the inner layer 1 may be peeled away initially to move toward its opposite surface to the opposite inner side of the bottle if the one side. surface on the inner layer is stripped, and the bag made from the inner layer 1 is caused to collapse. This occurs as a result of inconsistent wall thickness of the inner wall 1 ( 0. O1 0 . 02 mm ) and short and long circumferences due to offset of two bonding bands . The layers are usually peeled away from the circumferential area of the thin wall thickness side, or a longer circumferential side. If the layer; is collapsed in such a manner as above-described, the bag which is formed from the inner bag which has been collapsed acts to push the suction pipe which depends from the body to be bent from a lateral direction, and thereby imposing an adverse effect even upon the cylinder piston o f the pump body .
The bottle of the present invention is manufactured in the following sequence.
First, laminated parisons having the cross-section as shown in Fig . 54 are in j ection molded . The bonding layer 3 is provided along the entire length of the laminated parisons. Then, the laminated parisons are sandwiched in position using a pair of blow-mold dies, and the bottle is formed in accordance with the Blow Molding Process as shown in Fig . 1.
That is, while the laminated parisona are sandwiched in position by means of a pair of blow molding dies, and one end of the laminated parison is bitten off by means of die to provide a bottle bottom: The other end of the laminated parison is cut-off and then an air inserting core metal is inserted into the other wend of the laminated parison. Air is supplied from the core metal into the laminated parison for forming the product in accordance with the blow molding process.
At this instance, the bottom surface of the bottle bottom is bitten off by means of die. This portion (pinch-off portion) which has been bitten-off lies on the parting line of the die, and this biting-off produces a rib 11 which projects slightly upwardly. This rib which has been produced by bit-of f is shown in Fig . 4 and Fig . 5 , and inner layers 1 may contact with each other in this rib when they are bitten-off, whereas the outer layers 2 may not contact with each other. Thus, an area between the outer layer 2 and the inner layer 1 is caused to crack along the parting line to produce a slit 12, when the area is impacted by, for example, stamping the bottom surface with a rod etc. , after the molding. As a result, an air is caused to f low into a gap between the inner layer 1 and an outer layer 2 passing through the slit 12.
Furthermore, the bottom surface is more recessed toward the inner side of the bottle at a portion where said slit 12 is produced, compared to its circumferential portion. Thus it may be most preferred to form the portion by bottoming-up. When the recess 14 is formed at the central portion of the bottom as shown in Fig . 6 and Fig .
7, the recess 14 may be formed such that it may transverse with the bottom portion 5 including the central bottom portion and a pair of parallel .projection strip 15 may be left as it sandwiches this recess 14 therebetween, as shown in Fig . 14, Fig . 15 , Fig . 16 and Fig . 17 .
In Fig. l4, Fig. 15, Fig. 16 and Fig. 17, a pair of parallel projection strips is provided to transverse with the parting line, retaining the sub-recess 14 formed with the rib 11 as being sandwiched at its central portion.
Illustrated in Fig. 21 and 22 is a construction, wherein a recessed portion 14c is provided having the rib 11 at its central location, and legs are provided in the total number of three on the surrounding bottom surf ace so that they may project outwardly therefrom. This leg ledge 16 may permit said slit portion 12 in the rib portion 11 to be bottomed-up just in the same manner as that used for recessed portions 14a, 14b and 14c.
Specifically describing the embodiments shown in Fig.
14 , Fig . 15 , Fig . 16 and Fig . 17 , said rib 11 ( parting line ) in which said slit may lie is provided in the ma j or axis direction of the oblong configuration so that it may transverse with the parting line running across the minor axis, and a main recessed portion 14 may be present on the opposite ends of the major axis, a pair of parallel projecting portion 5 being remained on the recessed portion 14. Furthermore, a sub-recessed portion 14b is further provided which is formed by further depressing the major recessed portion 14 and the projectile portion 15.
The bonding band 3 lies on the parting line, whereas the band extends not only to the body of the bottle, but also to the central portion of the bottom portion 5.
In the case of Fig. 14, an interface between the projecting portion 15 and the main recessed portion 14 is formed in an overhanging configuration. This overhanging portion may allow the inner layer to be overhung against the outer layer to thereby form a lock portion 17.
Moreover, in order to provide a lock portion which can be used to lock the inner layer with the outer layer, it can be suggested by way of example to provide a convexed lock portion 17 with a C-shaped cross-section in which the projecting portion 15 is projected outwardly as shown in Fig. 8 and Fig. 9, or alternatively a concaved lock portion 17 of a C-shaped cross-section as shown in Fig . 19 and Fig. 21. These concaved or convexed portions may be formed with an overhanging configuration in cross-section so that the inner layer may overhang with the outer layer against at the overhanging portion.
This lock portion is preferably provided on the projecting strip portion 15 which is opposite the bonding band because this locating may allow users to adjust the collapse of the bag by the inner layer. That is, the bonding band 3 is arranged to lie along the left side of the drawing in each of embodiments shown in Fig . 6 , Fig .
7, Fig. 10, Fig. 14, Fig. 15, Fig. lb, Fig. 17 and Fig. 19 to Fig . 22 .
In case that the lock portion 17 is present, because the inner layer is locked in position on the bottom portion 5, and so a consistent width may be maintained as shown in Fig. 10 and Fig. 11 when the inner layer is caused to collapse. In turn, in the absence of the lock portion 17, the bag which consists of the inner layer may be shifted in a lateral direction as shown in Fog. l2 and Fig.
13, and it may urge the pump etc. thereby interfering with the smooth emptying operation of the contents.
After being molded, a trimmer treatment is applied over the mouth portion in order to finish the mouth portion. During this trimmer process, a grinding and cutting trimmer is operated to rotate for removal of burs from the mouth portion. However, since the inner layer 1 is in closely contact with the outer layer 2, and so the inner layer 1 cannot be separated away from the outer layer 2 to prevent its entangle around the trimmer by the - 23~-mere rotation of the trimmer.
Thus, the mouth portions of the outer and inner layers may be finished uniformly. .
As a finishing technique for the mouth portion of the bottle which can be carried out during the molding step, prior arts are known from Japanese Patent Application Unexamined Publication No. SH0.45-31397, The art uses a mandrel which is inserted into the mouth portion and a sleeve which is provided around the mandrel to finish the mouth portion. When this mandrel is inserted into the mouth portion of ~ the bottom which contains a freely peelable dual.,layers, the inner layer can be trailed along together with the mandrel. Thus it has been a conventional practice of .overlapping the upper surface of the outer layer 2 with the inner layer_ 1 at the mouth portion to prevent the inner layer from being trailed in a downward direction, as shown in Fig. 55.
Because the these inner and outer layers are bonded together at the mouth portion in the bottle of the present invention, and thus it is unnecessary to form the inner layer in such a configuration as that shown in Fig. 55.
Thus, the bottle can be easily molded.
The bottle is suitable for use, wherein it is adapted to empty the content liquid by means of pump, by attaching the pump to the mouth of the bottle. For example, the bottle may be suitable for use as a large-sized container for shampoo or rinse to be used in the bath room.
In such a container as above-described, the inner layer may be peeled away from the outer layer and collapsed, upon the pump being actuated to produce a negative pressure inside the container. In such a case, an air may enter into the clearance to be created between the inner and outer layers to prevent the collapse of the container made from the outer layer. In the meantime, such large-sized container for shampoo or rinse is usually put on the floor surface in the bath room, and therefore the hot water may enter into the outer layer through the slit if such slit is provided at a position where the hot water may flood. However, in this embodiment, since the recessed portion is provided so as to segregate the slit away from the floor surface, and therefore there may be no chance of the hot water being sucked through the slit. _ In the meantime, it may be preferable to provide for means which may mechanically push the bottle in the order of bottle bottom outer periphery, and the bottle lower side portion, in addition to a pushing operation to be applied against the pinch-off portion (ribbed portion), in order to facilitate the peeling of the inner layer and hence the inflow of the air at the bottom portion of the bottle.
[Embodiment 6]
The laminated bottle of the present invention can be preferably used in combination with a pump device to be described later. The pump device is one which is adapted to prevent a bag which is formed from an inner layer from making a close contact with a suction portion 34 at the time of delivery, or ensuring a flow passage of the content in the bag and thereby facilitating the delivery of contents, even if the bag should contact closely with the suction portion 34, when the laminated bottle of the present invention is attached with a pump device which comprises a suction pipe which depends into the bottle .
In the meantime, the construction of the pump itself which is provided at the cylindrical mouth portion 2 of the container 1 is the same as that in the prior art, and therefore its detailed description is omitted.
This pump device comprises a suction portion 34 which is provided at the lower end of the pump 33, as shown in Fig. 23 - Fig. 25, and is provided at the upper end of the pump with an operable portion ( not shown ) for the pump 33 .
The container can use the laminated bottle which has been described in each of above-embodiments. The suction portion 34 is inserted into the bottle, and the suction portion 34 is covered by the bag 1 made from the inner layer. The bag 1 is filled with contents.
In the meantime, when this pump device is used with the laminated container, even if the inner layer of two layers, i.e. , outer and inner layer, abuts with the above-described bag 1, and the inner layer closely contacts with the suction portion 34, a flow passage through which contents are sucked can be reliably established to deliver the contents.
A ribbed convex portion 38 is formed to run in the longitudinal direction of the suction portion 34 along its peripheral portion. Four of such convexed portion 38 are provided with 90° angular space therebetween. Then, four suction ports 40 are formed in the end 39 which lies below the suction portion 34, each of these suction ports being open to the lateral side of the suction portion 34.
The suction ports 40 are provided in the number of four with 90° space between said convexed portion 38. The suction ports 40 each are formed in the configuration of slit with the dimension of 1.5 mm a.n width and 10 mm in length. This suction port 40 is further open to the bottom surface of the suction portion 34.
In this embodiment, the suction portion 34 has the _ overall length of 110 mm and the outside diameter of 11 mm, whereas the convexed portion 38 has the height of 1 mm.
The convexed portion 38 may alternatively be formed in a concaved configuration. That is, any construction can be employed, provided that a flow passage may be ensured into which the contents may drop by the presence of concaved or convexed portions along the suction portion 34, even if the bag 1 should contact closely with the outer periphery of the suction portion 34. In this way, the whole quantity of contents can be smoothly and reliably discharged.
The experiment which was carried out to compare the residue amount and remaining percentage of the contents indicated that the residue amount was 36.95 g and the residue percentage was 6.93 % respectively.
[Embodiment 7]
The seventh embodiment of the present invention will be described with reference to Fig. 26 through Fig. 28.
In this embodiment, the suction portion 34 is formed in the configuration of circular orifice portion with the diameter of 7 mm which opens at the lower end of the pump 33, rather than being formed in a cylindrical configuration. A rod 41 which is co-axial with this suction portion 34 and extends to a position where it may not cover the suction portion 34. The rod 41 is formed by combining the sheet members into a cross-section of the Japanese word "~" (i.e., three parallel straight lines connected by a perpendicular straight line at their centers) and the center of the rod 41 coincides with the center of the suction portion 34. The rod 41 has the length of 91 mm, and the intermediate lateral line of the "~"-shaped section has the width of 13 mm, and the thickness of 2 mm. In turn, the lateral line which lies vertically has the width of 7 mm, and the thickness of 1.5 mm. Furthermore, a distance between lateral lines which lie in the vertical directions is set to be 9 mm. In the pump device in accordance with this embodiment, the rod 41 may interfere with the bag which has been shrunk to prevent it from closing off the suction portion 34, because the rod 41 lies immediately below the opening which is the suction portion 34, upon the bag being shrunk.: Furthermore, a flow passage into which the contents flows may be provided by a clearance, i.e. a space to be created between sheet materials which form the rod 41, and consequently the contents may not left behind as a residue even if the bag has been shrunk.
The experiment which was carried out to compare the residue amount and remaining percentage of the contests indicated that the residue amount was .35. 0 g and the residue percentage was 6:78 % respectively.
[Embodiment 8] .
The eighth embodiment of the present invention will .be described, with reference to Fig. 29 ' Fig. 31. The suction portion 34 is not cylindrical, but is ,formed in the configuration of orifice having the diameter of 7 mm which opens at the lower end of the pump 33, like in above-described embodiment 7. A rod 41 Which is co-axial with the suction portion 34 and extends to a position where it dose not cover the suction portion 34.
The rod 41 is formed in a cross-section of the Japanese word ~~" and the center of the rod 41 coincides with the center of said suction portion 34. The rod 41 has the length of 91 mm, and the intermediate lateral line of the ~~" -shaped section has the width of 14 mm, and the thickness of 3 mm. In turn, the lateral line which lies vertically has the width of 8 mm, and the thickness of 2 mm. Furthermore, a distance between lateral lines which lie in the vertical directions is set to be 10 mm.
The experiment which was carried out to compare the residue amount and remaining percentage of the contents indicated that the residue amount was 28.9 g and the residue percentage was 5.75 $ respectively.
[Embodiment 9]
The ninth embodiment of the present invention will be described hereinbelow, with reference to Fig. 32 - Fig.
34.
In this embodiment, the suction portion 34 is formed as a circular orifice portion which is open at the lower end of the pump 33 and has the diameter of 7 mm, rather than a cylindrical configuration, just in the same manner as that in embodiment 7. A rod 41 is '.
co-axial with this suction portion 34 and extends to a position where it does not cover the suction portion 34..
The rod 41 is formed in the configuration, wherein three sheets are combined each other with 120 angular difference therebetween, having its center coincide with the center of said suction portion 34. The rod 41 has the length of 91 mm, the width of 8 mm for every sheet and the thickness of 1.5-mm.
The experiment which was carried out to compare the residue amount and remaining percentage of the contents indicated that the residue amount was 116.11 g and the residue percentage was 22.90 $ respectively.
[Embodiment 10]
The tenth embodiment of the present invention will be described hereinbelow, with reference to 'Fig. 35 " Fig.
37.
In this embodiment, the suction portion 34 is formed as a circular orifice portion which is open at the lower end of the pump 33 and has the diameter of 7 mm, rather than a cylindrical configuration, just in the same manner as that in the previous eighth embodiment. A rod 41 is co-axial with this suction portion.34 and extends to a position where it does not cover the suction portion 34.
The rod 41 is formed in such a configuration, wherein four sheets are combined in the shape of crusade, having its center coincide with the center of said suction portion 34. The rod 41 has the length of 91 mm, the width of 8 mm for very sheet and the thickness of 1.5 mm.
The experiment which was carried out to compare the residue amount and remaining percentage of the contents.
indicated that the residue amount was 81.86 g and the residue percentage was 16.13 $ respectively.
[Embodiment 11]
The eleventh embodiment of the present invention will be described, with reference to Fig. 38 - Fig. 40.
In this embodiment, the suction portion 34 is formed ~ as a circular orifice portion which is open at the lower end of the pump 33 and has the diameter of 7 mm, rather than a cylindrical configuration, just in the same manner as that in embodiment 7. A rod 41 is , co-axial with this suction portion 34 and extends to a position where it does not cover the suction portion 34.
The rod 41 is formed in such a configuration, wherein three sheets are combined with an angular difference of 120° , further combining narrower sheets with an angular difference of 60° , said narrower. sheets being combined with the angular difference of 120°
The center of the rod coincides with the center of said suction portion 34. The rod 41 has the length of 91 mm with the width of wider sheets of 8 mm, whereas the narrower sheet has the width of 5.1 mm and the thickness of 1.5 mm.
The experiment which was carried out to compare the residue amount and remaining percentage of the contents indicated that the residue amount was 37,.97 g and the residue percentage was 7.47 % respectively.
In the pump device of the present invention as above-described, a space is formed between a bag and the suction portion, and thus it is possible to prevent the bag from making a close contact with the suction portion, and thereby allowing the contents to be delivered smoothly and totally:
[Embodiment 12]
In the pump device as shown in the sixth embodiment of the present invention, the bag which has been shrunk may contact with and broken by the lowermost end of the suction. portion which is formed in a cylindrical configuration. Therefore, it is preferable 'to form the lower end portion of the cylindrical suction portion 34 in a convexed and curved configuration 42 as illustrated in Fig. 42. Except that the cylindrical suction portion 34 is formed at its lower end portion in the curved configuration as above described, the construction of the pump device is identical with that in the embodiment shown in Fig . 23 .
[Embodiment 13]
In the pump device in accordance with the seventh embodiment of the present invention as shown in Fig:26, the bag which has shrunk may contact with and broken by the lower end of the rod 41 which extends to. a position immediately below an opening which is the suction portion 34. Consequently, it may also be preferable to form the lower of this rod 41 in the convexed curved configuration 43 as illustrated in Fig. 43. Except that the rod 41 is formed at its end portion in such a curved configuration as above-described, the construction of the pump device is identical with that in the embodiment illustrated in Fig .
26.
[Embodiment 14]
In addition to the pump device of the sixth embodiment of the present invention, it may be preferable to outfit an annulus 44 around the above-described pump 33, as shown in Fig. 44 - Fig. 48. The annulus 44 is provided with six slit-like windows with the 60~ angular difference ~in a longitudinal direction. The window which is formed in this annulus can allow the content which remains in the upper portion of the bag 1 to be guided in a downward direction and delivered completely.
[Embodiment 15]
Furthermore, Fig. 49 illustrates a fifteenth embodiment of the present invention; wherein the above-described annulus 44 is loaded on the pump dedice of the seventh embodiment of the present invention shown in Fig. 49. Other features of the embodiment 15 are the same as the those in the fourteenth ~ embodiment .
[Embodiment 16]
Fig . 50 illustrates the annulus 44 which is loaded on the pump device of the eighth embodiment of the present invention shown in Fig. 29, as the sixteenth embodiment of the present invention.
The experiment which was carried out to compare the residue amount and remaining percentage of the contents 20. indicated that the residue amount was 23.6 g and the residue percentage was 5.75 $ respectively.
In the meantime, the annulus 44 may be outfitted around the pump 33 in the embodiments 9~13, just in the same manner as that in the embodiments 14 ' 16. The window which is formed in the annulus 44 can allow the content which remains in the upper portion of the bag 1 to be guided in the downward direction and delivered completely.
[Embodiment 17]
Fig. 51, Fig. 52 and Fig. 53 show a pump device in accordance with the seventeenth embodiment of the present invention. The pump device in this embodiment 1 is constructed such that the content which remains in the upper portion of the bag 1 may be guided in a downward direction and can be delivered completely, even though the annulus 44 with the window is not loaded in position on the pump 33.
That is, the pump device in this embodiment has its suction portion 34 formed as an opening in the bottom surface of the cylindrical connection 46 to be loaded on the lower end of the pump, rather than a cylindrical configuration.
This connection 46 is provided by integrally forming the first cylindrical portion 47a with the second cylindrical portion 47b which is formed at the lower portion of the first cylindrical portion and has outer diameter smaller than that of the cylindrical portion.
The first cylindrical portion 47a is formed at its outer circumferential surface with a plurality of grooves 48 each extending in a tangential direction and having a step-like bottom surface, these grooves 48 being provided to maintain an uniform spacing in the circumferential direction. Each of these grooves 48 opens outwardly at the lower end of the first cylindrical portion 47a, that is, at the end of the second cylindrical portion 47b. The bottom surface of this second cylindrical portion 47b, that is, the bottom surface of the connection 46 is provided with the rod 41 in the same manner as that for the pump device of the seventh embodiment shown in Fig. 26.
The rod 41 is wholly identical with that shown in the previous seventh embodiment, and so its description is omitted.
In this manner, by forming the cylindrical connection ~ 46 which is loaded on the lower end of the pump 33, and then defining a groove portion 48 which extends in the axial direction around the circumferential surface of the connection, the contents which tend to settle down upon the upper end of the bag which has been shrunk can flow in a downward direction passing through these groove portion 48, and discharged completely. _ Industrial Applicability The present invention is useful when it is embodied as the container in which contents having volaltie components, are retained, such as, for example, a bottle for agricultural chemicals which tend to vaporize and loose its weight., or a container in which cosmetics and pharmaceutical are contained. Moreover, the present invention will be applicable as a container in which a content-emptying pump is provided at the mouth portion and is used to suck the content for discharge to the outside.
In Fig. l4, Fig. 15, Fig. 16 and Fig. 17, a pair of parallel projection strips is provided to transverse with the parting line, retaining the sub-recess 14 formed with the rib 11 as being sandwiched at its central portion.
Illustrated in Fig. 21 and 22 is a construction, wherein a recessed portion 14c is provided having the rib 11 at its central location, and legs are provided in the total number of three on the surrounding bottom surf ace so that they may project outwardly therefrom. This leg ledge 16 may permit said slit portion 12 in the rib portion 11 to be bottomed-up just in the same manner as that used for recessed portions 14a, 14b and 14c.
Specifically describing the embodiments shown in Fig.
14 , Fig . 15 , Fig . 16 and Fig . 17 , said rib 11 ( parting line ) in which said slit may lie is provided in the ma j or axis direction of the oblong configuration so that it may transverse with the parting line running across the minor axis, and a main recessed portion 14 may be present on the opposite ends of the major axis, a pair of parallel projecting portion 5 being remained on the recessed portion 14. Furthermore, a sub-recessed portion 14b is further provided which is formed by further depressing the major recessed portion 14 and the projectile portion 15.
The bonding band 3 lies on the parting line, whereas the band extends not only to the body of the bottle, but also to the central portion of the bottom portion 5.
In the case of Fig. 14, an interface between the projecting portion 15 and the main recessed portion 14 is formed in an overhanging configuration. This overhanging portion may allow the inner layer to be overhung against the outer layer to thereby form a lock portion 17.
Moreover, in order to provide a lock portion which can be used to lock the inner layer with the outer layer, it can be suggested by way of example to provide a convexed lock portion 17 with a C-shaped cross-section in which the projecting portion 15 is projected outwardly as shown in Fig. 8 and Fig. 9, or alternatively a concaved lock portion 17 of a C-shaped cross-section as shown in Fig . 19 and Fig. 21. These concaved or convexed portions may be formed with an overhanging configuration in cross-section so that the inner layer may overhang with the outer layer against at the overhanging portion.
This lock portion is preferably provided on the projecting strip portion 15 which is opposite the bonding band because this locating may allow users to adjust the collapse of the bag by the inner layer. That is, the bonding band 3 is arranged to lie along the left side of the drawing in each of embodiments shown in Fig . 6 , Fig .
7, Fig. 10, Fig. 14, Fig. 15, Fig. lb, Fig. 17 and Fig. 19 to Fig . 22 .
In case that the lock portion 17 is present, because the inner layer is locked in position on the bottom portion 5, and so a consistent width may be maintained as shown in Fig. 10 and Fig. 11 when the inner layer is caused to collapse. In turn, in the absence of the lock portion 17, the bag which consists of the inner layer may be shifted in a lateral direction as shown in Fog. l2 and Fig.
13, and it may urge the pump etc. thereby interfering with the smooth emptying operation of the contents.
After being molded, a trimmer treatment is applied over the mouth portion in order to finish the mouth portion. During this trimmer process, a grinding and cutting trimmer is operated to rotate for removal of burs from the mouth portion. However, since the inner layer 1 is in closely contact with the outer layer 2, and so the inner layer 1 cannot be separated away from the outer layer 2 to prevent its entangle around the trimmer by the - 23~-mere rotation of the trimmer.
Thus, the mouth portions of the outer and inner layers may be finished uniformly. .
As a finishing technique for the mouth portion of the bottle which can be carried out during the molding step, prior arts are known from Japanese Patent Application Unexamined Publication No. SH0.45-31397, The art uses a mandrel which is inserted into the mouth portion and a sleeve which is provided around the mandrel to finish the mouth portion. When this mandrel is inserted into the mouth portion of ~ the bottom which contains a freely peelable dual.,layers, the inner layer can be trailed along together with the mandrel. Thus it has been a conventional practice of .overlapping the upper surface of the outer layer 2 with the inner layer_ 1 at the mouth portion to prevent the inner layer from being trailed in a downward direction, as shown in Fig. 55.
Because the these inner and outer layers are bonded together at the mouth portion in the bottle of the present invention, and thus it is unnecessary to form the inner layer in such a configuration as that shown in Fig. 55.
Thus, the bottle can be easily molded.
The bottle is suitable for use, wherein it is adapted to empty the content liquid by means of pump, by attaching the pump to the mouth of the bottle. For example, the bottle may be suitable for use as a large-sized container for shampoo or rinse to be used in the bath room.
In such a container as above-described, the inner layer may be peeled away from the outer layer and collapsed, upon the pump being actuated to produce a negative pressure inside the container. In such a case, an air may enter into the clearance to be created between the inner and outer layers to prevent the collapse of the container made from the outer layer. In the meantime, such large-sized container for shampoo or rinse is usually put on the floor surface in the bath room, and therefore the hot water may enter into the outer layer through the slit if such slit is provided at a position where the hot water may flood. However, in this embodiment, since the recessed portion is provided so as to segregate the slit away from the floor surface, and therefore there may be no chance of the hot water being sucked through the slit. _ In the meantime, it may be preferable to provide for means which may mechanically push the bottle in the order of bottle bottom outer periphery, and the bottle lower side portion, in addition to a pushing operation to be applied against the pinch-off portion (ribbed portion), in order to facilitate the peeling of the inner layer and hence the inflow of the air at the bottom portion of the bottle.
[Embodiment 6]
The laminated bottle of the present invention can be preferably used in combination with a pump device to be described later. The pump device is one which is adapted to prevent a bag which is formed from an inner layer from making a close contact with a suction portion 34 at the time of delivery, or ensuring a flow passage of the content in the bag and thereby facilitating the delivery of contents, even if the bag should contact closely with the suction portion 34, when the laminated bottle of the present invention is attached with a pump device which comprises a suction pipe which depends into the bottle .
In the meantime, the construction of the pump itself which is provided at the cylindrical mouth portion 2 of the container 1 is the same as that in the prior art, and therefore its detailed description is omitted.
This pump device comprises a suction portion 34 which is provided at the lower end of the pump 33, as shown in Fig. 23 - Fig. 25, and is provided at the upper end of the pump with an operable portion ( not shown ) for the pump 33 .
The container can use the laminated bottle which has been described in each of above-embodiments. The suction portion 34 is inserted into the bottle, and the suction portion 34 is covered by the bag 1 made from the inner layer. The bag 1 is filled with contents.
In the meantime, when this pump device is used with the laminated container, even if the inner layer of two layers, i.e. , outer and inner layer, abuts with the above-described bag 1, and the inner layer closely contacts with the suction portion 34, a flow passage through which contents are sucked can be reliably established to deliver the contents.
A ribbed convex portion 38 is formed to run in the longitudinal direction of the suction portion 34 along its peripheral portion. Four of such convexed portion 38 are provided with 90° angular space therebetween. Then, four suction ports 40 are formed in the end 39 which lies below the suction portion 34, each of these suction ports being open to the lateral side of the suction portion 34.
The suction ports 40 are provided in the number of four with 90° space between said convexed portion 38. The suction ports 40 each are formed in the configuration of slit with the dimension of 1.5 mm a.n width and 10 mm in length. This suction port 40 is further open to the bottom surface of the suction portion 34.
In this embodiment, the suction portion 34 has the _ overall length of 110 mm and the outside diameter of 11 mm, whereas the convexed portion 38 has the height of 1 mm.
The convexed portion 38 may alternatively be formed in a concaved configuration. That is, any construction can be employed, provided that a flow passage may be ensured into which the contents may drop by the presence of concaved or convexed portions along the suction portion 34, even if the bag 1 should contact closely with the outer periphery of the suction portion 34. In this way, the whole quantity of contents can be smoothly and reliably discharged.
The experiment which was carried out to compare the residue amount and remaining percentage of the contents indicated that the residue amount was 36.95 g and the residue percentage was 6.93 % respectively.
[Embodiment 7]
The seventh embodiment of the present invention will be described with reference to Fig. 26 through Fig. 28.
In this embodiment, the suction portion 34 is formed in the configuration of circular orifice portion with the diameter of 7 mm which opens at the lower end of the pump 33, rather than being formed in a cylindrical configuration. A rod 41 which is co-axial with this suction portion 34 and extends to a position where it may not cover the suction portion 34. The rod 41 is formed by combining the sheet members into a cross-section of the Japanese word "~" (i.e., three parallel straight lines connected by a perpendicular straight line at their centers) and the center of the rod 41 coincides with the center of the suction portion 34. The rod 41 has the length of 91 mm, and the intermediate lateral line of the "~"-shaped section has the width of 13 mm, and the thickness of 2 mm. In turn, the lateral line which lies vertically has the width of 7 mm, and the thickness of 1.5 mm. Furthermore, a distance between lateral lines which lie in the vertical directions is set to be 9 mm. In the pump device in accordance with this embodiment, the rod 41 may interfere with the bag which has been shrunk to prevent it from closing off the suction portion 34, because the rod 41 lies immediately below the opening which is the suction portion 34, upon the bag being shrunk.: Furthermore, a flow passage into which the contents flows may be provided by a clearance, i.e. a space to be created between sheet materials which form the rod 41, and consequently the contents may not left behind as a residue even if the bag has been shrunk.
The experiment which was carried out to compare the residue amount and remaining percentage of the contests indicated that the residue amount was .35. 0 g and the residue percentage was 6:78 % respectively.
[Embodiment 8] .
The eighth embodiment of the present invention will .be described, with reference to Fig. 29 ' Fig. 31. The suction portion 34 is not cylindrical, but is ,formed in the configuration of orifice having the diameter of 7 mm which opens at the lower end of the pump 33, like in above-described embodiment 7. A rod 41 Which is co-axial with the suction portion 34 and extends to a position where it dose not cover the suction portion 34.
The rod 41 is formed in a cross-section of the Japanese word ~~" and the center of the rod 41 coincides with the center of said suction portion 34. The rod 41 has the length of 91 mm, and the intermediate lateral line of the ~~" -shaped section has the width of 14 mm, and the thickness of 3 mm. In turn, the lateral line which lies vertically has the width of 8 mm, and the thickness of 2 mm. Furthermore, a distance between lateral lines which lie in the vertical directions is set to be 10 mm.
The experiment which was carried out to compare the residue amount and remaining percentage of the contents indicated that the residue amount was 28.9 g and the residue percentage was 5.75 $ respectively.
[Embodiment 9]
The ninth embodiment of the present invention will be described hereinbelow, with reference to Fig. 32 - Fig.
34.
In this embodiment, the suction portion 34 is formed as a circular orifice portion which is open at the lower end of the pump 33 and has the diameter of 7 mm, rather than a cylindrical configuration, just in the same manner as that in embodiment 7. A rod 41 is '.
co-axial with this suction portion 34 and extends to a position where it does not cover the suction portion 34..
The rod 41 is formed in the configuration, wherein three sheets are combined each other with 120 angular difference therebetween, having its center coincide with the center of said suction portion 34. The rod 41 has the length of 91 mm, the width of 8 mm for every sheet and the thickness of 1.5-mm.
The experiment which was carried out to compare the residue amount and remaining percentage of the contents indicated that the residue amount was 116.11 g and the residue percentage was 22.90 $ respectively.
[Embodiment 10]
The tenth embodiment of the present invention will be described hereinbelow, with reference to 'Fig. 35 " Fig.
37.
In this embodiment, the suction portion 34 is formed as a circular orifice portion which is open at the lower end of the pump 33 and has the diameter of 7 mm, rather than a cylindrical configuration, just in the same manner as that in the previous eighth embodiment. A rod 41 is co-axial with this suction portion.34 and extends to a position where it does not cover the suction portion 34.
The rod 41 is formed in such a configuration, wherein four sheets are combined in the shape of crusade, having its center coincide with the center of said suction portion 34. The rod 41 has the length of 91 mm, the width of 8 mm for very sheet and the thickness of 1.5 mm.
The experiment which was carried out to compare the residue amount and remaining percentage of the contents.
indicated that the residue amount was 81.86 g and the residue percentage was 16.13 $ respectively.
[Embodiment 11]
The eleventh embodiment of the present invention will be described, with reference to Fig. 38 - Fig. 40.
In this embodiment, the suction portion 34 is formed ~ as a circular orifice portion which is open at the lower end of the pump 33 and has the diameter of 7 mm, rather than a cylindrical configuration, just in the same manner as that in embodiment 7. A rod 41 is , co-axial with this suction portion 34 and extends to a position where it does not cover the suction portion 34.
The rod 41 is formed in such a configuration, wherein three sheets are combined with an angular difference of 120° , further combining narrower sheets with an angular difference of 60° , said narrower. sheets being combined with the angular difference of 120°
The center of the rod coincides with the center of said suction portion 34. The rod 41 has the length of 91 mm with the width of wider sheets of 8 mm, whereas the narrower sheet has the width of 5.1 mm and the thickness of 1.5 mm.
The experiment which was carried out to compare the residue amount and remaining percentage of the contents indicated that the residue amount was 37,.97 g and the residue percentage was 7.47 % respectively.
In the pump device of the present invention as above-described, a space is formed between a bag and the suction portion, and thus it is possible to prevent the bag from making a close contact with the suction portion, and thereby allowing the contents to be delivered smoothly and totally:
[Embodiment 12]
In the pump device as shown in the sixth embodiment of the present invention, the bag which has been shrunk may contact with and broken by the lowermost end of the suction. portion which is formed in a cylindrical configuration. Therefore, it is preferable 'to form the lower end portion of the cylindrical suction portion 34 in a convexed and curved configuration 42 as illustrated in Fig. 42. Except that the cylindrical suction portion 34 is formed at its lower end portion in the curved configuration as above described, the construction of the pump device is identical with that in the embodiment shown in Fig . 23 .
[Embodiment 13]
In the pump device in accordance with the seventh embodiment of the present invention as shown in Fig:26, the bag which has shrunk may contact with and broken by the lower end of the rod 41 which extends to. a position immediately below an opening which is the suction portion 34. Consequently, it may also be preferable to form the lower of this rod 41 in the convexed curved configuration 43 as illustrated in Fig. 43. Except that the rod 41 is formed at its end portion in such a curved configuration as above-described, the construction of the pump device is identical with that in the embodiment illustrated in Fig .
26.
[Embodiment 14]
In addition to the pump device of the sixth embodiment of the present invention, it may be preferable to outfit an annulus 44 around the above-described pump 33, as shown in Fig. 44 - Fig. 48. The annulus 44 is provided with six slit-like windows with the 60~ angular difference ~in a longitudinal direction. The window which is formed in this annulus can allow the content which remains in the upper portion of the bag 1 to be guided in a downward direction and delivered completely.
[Embodiment 15]
Furthermore, Fig. 49 illustrates a fifteenth embodiment of the present invention; wherein the above-described annulus 44 is loaded on the pump dedice of the seventh embodiment of the present invention shown in Fig. 49. Other features of the embodiment 15 are the same as the those in the fourteenth ~ embodiment .
[Embodiment 16]
Fig . 50 illustrates the annulus 44 which is loaded on the pump device of the eighth embodiment of the present invention shown in Fig. 29, as the sixteenth embodiment of the present invention.
The experiment which was carried out to compare the residue amount and remaining percentage of the contents 20. indicated that the residue amount was 23.6 g and the residue percentage was 5.75 $ respectively.
In the meantime, the annulus 44 may be outfitted around the pump 33 in the embodiments 9~13, just in the same manner as that in the embodiments 14 ' 16. The window which is formed in the annulus 44 can allow the content which remains in the upper portion of the bag 1 to be guided in the downward direction and delivered completely.
[Embodiment 17]
Fig. 51, Fig. 52 and Fig. 53 show a pump device in accordance with the seventeenth embodiment of the present invention. The pump device in this embodiment 1 is constructed such that the content which remains in the upper portion of the bag 1 may be guided in a downward direction and can be delivered completely, even though the annulus 44 with the window is not loaded in position on the pump 33.
That is, the pump device in this embodiment has its suction portion 34 formed as an opening in the bottom surface of the cylindrical connection 46 to be loaded on the lower end of the pump, rather than a cylindrical configuration.
This connection 46 is provided by integrally forming the first cylindrical portion 47a with the second cylindrical portion 47b which is formed at the lower portion of the first cylindrical portion and has outer diameter smaller than that of the cylindrical portion.
The first cylindrical portion 47a is formed at its outer circumferential surface with a plurality of grooves 48 each extending in a tangential direction and having a step-like bottom surface, these grooves 48 being provided to maintain an uniform spacing in the circumferential direction. Each of these grooves 48 opens outwardly at the lower end of the first cylindrical portion 47a, that is, at the end of the second cylindrical portion 47b. The bottom surface of this second cylindrical portion 47b, that is, the bottom surface of the connection 46 is provided with the rod 41 in the same manner as that for the pump device of the seventh embodiment shown in Fig. 26.
The rod 41 is wholly identical with that shown in the previous seventh embodiment, and so its description is omitted.
In this manner, by forming the cylindrical connection ~ 46 which is loaded on the lower end of the pump 33, and then defining a groove portion 48 which extends in the axial direction around the circumferential surface of the connection, the contents which tend to settle down upon the upper end of the bag which has been shrunk can flow in a downward direction passing through these groove portion 48, and discharged completely. _ Industrial Applicability The present invention is useful when it is embodied as the container in which contents having volaltie components, are retained, such as, for example, a bottle for agricultural chemicals which tend to vaporize and loose its weight., or a container in which cosmetics and pharmaceutical are contained. Moreover, the present invention will be applicable as a container in which a content-emptying pump is provided at the mouth portion and is used to suck the content for discharge to the outside.
Claims (33)
1. A laminated bottle comprising:
a body portion;
a bottle mouth at an upper portion of the body portion; and a bottom portion at a lower portion of the body portion, wherein:
the bottle is formed of at least an outer layer made from a synthetic resin and an inner layer made from a flexible synthetic resin;
the inner layer and the outer layer adjacent to the inner layer in the body portion are freely peelable from each other;
the inner and outer layers are bonded at least partially by a bonding band along a direction extending from the bottle mouth toward the bottom portion;
parts of the inner layer are bonded together at a rib on a bottom parting line formed at the time of molding the bottle, without the outer layer being bonded together to form a slit between the outer and inner layers through which air may flow; and a lock portion is provided at the bottom portion of the bottle, the lock portion being used to retain the outer and inner layers integrally.
a body portion;
a bottle mouth at an upper portion of the body portion; and a bottom portion at a lower portion of the body portion, wherein:
the bottle is formed of at least an outer layer made from a synthetic resin and an inner layer made from a flexible synthetic resin;
the inner layer and the outer layer adjacent to the inner layer in the body portion are freely peelable from each other;
the inner and outer layers are bonded at least partially by a bonding band along a direction extending from the bottle mouth toward the bottom portion;
parts of the inner layer are bonded together at a rib on a bottom parting line formed at the time of molding the bottle, without the outer layer being bonded together to form a slit between the outer and inner layers through which air may flow; and a lock portion is provided at the bottom portion of the bottle, the lock portion being used to retain the outer and inner layers integrally.
2. The laminated bottle as claimed in claim 1, wherein:
the inner layer consists of a first inner layer and a second inner layer inside the first inner layer;
the second layers are bonded together at the rib on the bottom parting line in the bottom portion; and the first inner layer and the outer layer are not bonded together to form the slit therebetween.
the inner layer consists of a first inner layer and a second inner layer inside the first inner layer;
the second layers are bonded together at the rib on the bottom parting line in the bottom portion; and the first inner layer and the outer layer are not bonded together to form the slit therebetween.
3. The laminated bottle as claimed in claim 1, wherein the outer layer is made from polyethylene, and the inner layer consists of a first inner layer made from nylon and a second inner layer made from a resin of reduced moisture permeability, inside the first inner layer.
4. The laminated bottle as claimed in claim 1, 2 or 3, the slit in the bottom portion is lifted off above a floor surface upon which the bottle portion may lie.
5. The laminated bottle as claimed in claim 4, wherein a recess is provided which transverses with a valley including a central valley portion, and a pair of parallel projections are left which sandwich the recess therebetween.
6. The laminated bottle as claimed in claim 5, wherein the pair of parallel projections are provided to transverse with the parting line, and a sub-recess is provided which sandwiches the rib therebetween.
7. The laminated bottle as claimed in claim 4, wherein a recess is formed around the rib at a central position, and three or more projections are provided around the recess.
8. The laminated bottle as claimed in any one of claims 1 to 7, wherein the lock portion is provided with convex and concave portions in the bottom portion of the bottle, the convex and concave portions having an overhanging section; and the lock portion is formed by hooking the inner layer over the outer layer at the overhanging section.
9. The laminated bottle as claimed in any one of claims 1 to 7, wherein the lock portion is a convex or concave portion with a C-shaped cross-section which is provided at the bottom portion of the bottle.
10. The laminated bottle as claimed in any one of claims 1 to 7, wherein the lock portion is opposite against the bonding band.
11. A container comprising:
the laminated bottle as defined in any one of claims 1 to 10, for containing a content therein when in use, and a pump device comprising:
a suction portion which is to be inserted into the bottle and is opened; and an operable portion exposed to an outside of the bottle, wherein:
the suction portion has a cylindrical shape and has therearound a concave or convex portion running in a longitudinal direction; and the suction portion also has a plurality of suction orifices formed at a lower end thereof, the suction orifices being open in a lateral surface of the suction portion.
the laminated bottle as defined in any one of claims 1 to 10, for containing a content therein when in use, and a pump device comprising:
a suction portion which is to be inserted into the bottle and is opened; and an operable portion exposed to an outside of the bottle, wherein:
the suction portion has a cylindrical shape and has therearound a concave or convex portion running in a longitudinal direction; and the suction portion also has a plurality of suction orifices formed at a lower end thereof, the suction orifices being open in a lateral surface of the suction portion.
12. The container according to claim 11, wherein the suction portion has four of the convex or concave portions with a 90° angular space therebetween.
13. The container according to claim 11 or 12, wherein the suction portion has the convex portion.
14. The container according to claim 11 or 12, wherein the suction portion has the concave portion.
15. The container according to any one of claims 11 to 14, wherein the suction portion is open at a bottom thereof.
16. A container comprising:
the laminated bottle as defined in any one of claims 1 to 10, for containing a content therein when in use, and a pump device comprising:
a suction portion which is to be inserted into the bottle and is opened; and an operable portion exposed to an outside of the bottle, wherein:
the suction portion is open at a lower end of the operable portion; and the pump device further comprises a rod extending downwardly from an area adjacent to the suction portion to an area where the rod does not cover the suction portion, the rod being formed of a plurality of sheet materials and having such a cross-section that the sheet materials extend in more than two directions.
the laminated bottle as defined in any one of claims 1 to 10, for containing a content therein when in use, and a pump device comprising:
a suction portion which is to be inserted into the bottle and is opened; and an operable portion exposed to an outside of the bottle, wherein:
the suction portion is open at a lower end of the operable portion; and the pump device further comprises a rod extending downwardly from an area adjacent to the suction portion to an area where the rod does not cover the suction portion, the rod being formed of a plurality of sheet materials and having such a cross-section that the sheet materials extend in more than two directions.
17. The container according to claim 16, wherein the suction portion has a configuration of a circular orifice.
18. The container according to claim 16 or 17, wherein the rod is co-axial with the suction portion.
19. The container according to any one of claims 16 to 18, wherein the cross-section of the rod has a shape formed of three parallel straight lines connected by a perpendicular straight line at their centers.
20. The container according to any one of claims 16 to 18, wherein three sheet materials are combined so that the street materials extend with a 120° difference therebetween.
21. The container according to any one of claims 16 to 18, wherein four sheet materials are combined so that the cross-section of the rod is a crusade shape.
22. The container according to any one of claims 16 to 18, wherein three wide sheet materials are combined with an angular difference of 120°, and three narrow sheet materials are combined with an angular difference of 120° so that the wide and narrow sheet materials have a 60° angular difference.
23. A container comprising:
the laminated bottle as defined in any one of claims 1 to 10, for containing a content therein when in use, and a pump device comprising:
a suction portion which is to be inserted into the bottle and is opened; and an operable portion exposed to an outside of the bottle, wherein:
the suction portion is open at a lower end of the operable portion; and the pump device further comprises a rod extending downwardly from an area adjacent to the suction portion to an area where the rod does not cover the suction portion, by the rod having a cross-section of a shape formed of three parallel straight lines connected by a perpendicular straight lines at their centers.
the laminated bottle as defined in any one of claims 1 to 10, for containing a content therein when in use, and a pump device comprising:
a suction portion which is to be inserted into the bottle and is opened; and an operable portion exposed to an outside of the bottle, wherein:
the suction portion is open at a lower end of the operable portion; and the pump device further comprises a rod extending downwardly from an area adjacent to the suction portion to an area where the rod does not cover the suction portion, by the rod having a cross-section of a shape formed of three parallel straight lines connected by a perpendicular straight lines at their centers.
24. The container according to claim 23, wherein the suction portion has a configuration of a circular orifice.
25. The container according to claim 23 or 24, wherein the rod is co-axial with the suction portion.
26. The container according to any one of claims 11 to 14 or any one of claims 16 to 25, wherein the suction portion comprises a cylindrical connection for coupling with the operable portion and is opened at its bottom end portion, and a plurality of longitudinal grooves are formed around a circumferential surface of the suction portion.
27. A container comprising:
the laminated bottle as defined in any one of claims 1 to 10, for containing a content therein when in use, and a pump device comprising:
a suction portion which is to be inserted into the bottle and is opened; and an operable portion exposed to an outside of the bottle, wherein:
the suction portion is cylindrical in shape, and has a concaved or convexed portion formed around a circumference of the suction portion, the concaved or convexed portion extending in a longitudinal direction;
the suction portion has a plurality of suction orifices at a lower end of the suction portion, the suction orifices being open in a lateral surface of the suction portion; and an annulus is outfitted around an area in the vicinity of a base of the suction portion, the annulus being provided with a window which is parallel with the axis of the annulus.
the laminated bottle as defined in any one of claims 1 to 10, for containing a content therein when in use, and a pump device comprising:
a suction portion which is to be inserted into the bottle and is opened; and an operable portion exposed to an outside of the bottle, wherein:
the suction portion is cylindrical in shape, and has a concaved or convexed portion formed around a circumference of the suction portion, the concaved or convexed portion extending in a longitudinal direction;
the suction portion has a plurality of suction orifices at a lower end of the suction portion, the suction orifices being open in a lateral surface of the suction portion; and an annulus is outfitted around an area in the vicinity of a base of the suction portion, the annulus being provided with a window which is parallel with the axis of the annulus.
28. The container according to claim 27, wherein the window is a slit.
29. The container according to claim 27 or 28, wherein the suction portion has four of the convex or concave portions with a 90° angular space therebetween.
30. The container according to any one of claims 11 to 15 or any one of claims 27 to 29, wherein the lower end of the suction portion is formed in a convexed and curved configuration.
31. The container according to any one of claims 16 to 25, wherein the suction portion has a lower end formed in a convexed and curved configuration.
32. A container comprising:
the laminated bottle as defined in any one of claims 1 to 10, for containing a content therein when in use, and a pump device comprising:
a suction portion which is to be inserted into the bottle and is opened; and an operable portion exposed to an outside of the bottle, wherein:
the suction portion is open at a lower end of the operable portion and comprises a rod extending downwardly from an area adjacent to a suction portion;
the rod is formed of a plurality of sheet materials and has such a cross-section that the sheet materials extend in more than two directions; and an annulus is outfitted to a section which extends from the suction portion to the operable portion, the annulus being provided with a window which is parallel with an axis of the annulus.
the laminated bottle as defined in any one of claims 1 to 10, for containing a content therein when in use, and a pump device comprising:
a suction portion which is to be inserted into the bottle and is opened; and an operable portion exposed to an outside of the bottle, wherein:
the suction portion is open at a lower end of the operable portion and comprises a rod extending downwardly from an area adjacent to a suction portion;
the rod is formed of a plurality of sheet materials and has such a cross-section that the sheet materials extend in more than two directions; and an annulus is outfitted to a section which extends from the suction portion to the operable portion, the annulus being provided with a window which is parallel with an axis of the annulus.
33. The container according to claim 32, wherein the suction portion has a lower end formed in a convexed and curved configuration.
Applications Claiming Priority (13)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04117756A JP3124620B2 (en) | 1992-05-11 | 1992-05-11 | Laminated bottle |
| JP4-117756 | 1992-05-11 | ||
| JP4-122198 | 1992-05-14 | ||
| JP4122198A JP3025578B2 (en) | 1992-05-14 | 1992-05-14 | Pump mechanism for container |
| JP4-122199 | 1992-05-14 | ||
| JP4122199A JP3014858B2 (en) | 1992-05-14 | 1992-05-14 | Pump mechanism for container |
| JP1992062421U JP2579322Y2 (en) | 1992-09-04 | 1992-09-04 | Laminated bottle |
| JP4-62421 | 1992-09-04 | ||
| JP7419092 | 1992-10-23 | ||
| JP4-74190 | 1992-10-23 | ||
| JP5-17182 | 1993-04-06 | ||
| JP1718293U JP2584405Y2 (en) | 1992-10-23 | 1993-04-06 | Suction type dispensing pump device |
| CA002113117A CA2113117C (en) | 1992-05-11 | 1993-05-11 | Laminated bottle and pump device therefor |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002113117A Division CA2113117C (en) | 1992-05-11 | 1993-05-11 | Laminated bottle and pump device therefor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2509336A1 CA2509336A1 (en) | 1993-11-25 |
| CA2509336C true CA2509336C (en) | 2006-10-31 |
Family
ID=34891454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002509336A Expired - Lifetime CA2509336C (en) | 1992-05-11 | 1993-05-11 | Laminated bottle |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2509336C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3112109B1 (en) * | 2015-06-29 | 2018-05-23 | The Procter and Gamble Company | Improved preforms and processes for making bag in bottle containers |
-
1993
- 1993-05-11 CA CA002509336A patent/CA2509336C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CA2509336A1 (en) | 1993-11-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request |