JP2006008247A - Synthetic resin blow molding container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a delamination bottle in which an occurrence of an unacceptable deformation of the bottle in accompany with discharging the content liquid is prevented certainly by delaminating the inner layer to the outer layer in the mouth part of the delamination bottle beforehand and keeping the delamination state so as to secure a path for conducting open air into between the outer layer and the inner layer of the delamination bottle. <P>SOLUTION: In the delamination bottle, an air intake pin 8 to form a path for taking in open air into between the outer layer 2 and the inner layer 3 is inserted in and fixed to an air intake hole 5 opened at the outer layer 2 of the mouth part 4, and the inner layer 3 is pushed with the fixed air intake pin 8 to be delaminated from the inner surface of the outer layer 2 to form a delaminated space S between the outer layer 2 and the inner layer 3 and by the delaminated space S as a conducting path for open air, open air conducting into between the outer layer 2 and the inner layer 3 can be achieved smoothly so that the occurrence of the unacceptable deformation of the outer layer 2 can be prevented. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a blow molded container comprising an outer layer made of a synthetic resin that forms a fixed outer shell, and an inner layer made of a flexible synthetic resin that is detachably laminated on the outer layer to form an inner bag. The present invention relates to an easily peelable laminated synthetic resin blow-molded container in which an inlet hole for introducing outside air is formed between an outer layer and an inner layer in a mouth tube portion of the container.

  An easily peelable laminated synthetic resin blow-molded container (hereinafter referred to as the Delami bottle), which has an intake hole for introducing outside air in the outer layer of the mouth tube, is known. In the Delami bottle, the inner layer portion in the mouth tube portion is thicker than the other portions, so the inner layer portion is closely attached to the outer layer portion, and therefore the outer layer portion and the inner layer portion in the mouth tube portion are As a result, the delamination bottle has an inconvenience that the delamination bottle is deformed in a bad shape due to the negative pressure generated inside.

In order to eliminate the inconvenience described above, the upper end portion of the inner layer portion in the mouth tube portion of the delami bottle is configured in a flange shape with a desired gap between the upper end surface of the outer layer portion of the mouth tube portion, and the mouth tube portion. Using the assembly of a cap with a pump or the like, a displacement is generated between the outer layer portion and the inner layer portion in the mouth tube portion, and the separation between the outer layer portion and the inner layer portion is promoted, and the inner layer portion There has been proposed a technique for securing a stable assembly of the inner layer portion with respect to the outer layer portion in the mouth tube portion by firmly holding the upper end portion in a flange shape between the cap and the outer layer portion.
JP-A-8-80929

  However, in the above-described prior art, the separation between the outer layer portion and the inner layer portion is surely promoted by forcibly generating a displacement displacement between the outer layer portion and the inner layer portion of the mouth tube portion. However, since the thickness of the inner layer portion in the mouth tube portion is larger than that of the other portions, the peeling operation is not always achieved smoothly, and it returns to the close contact state after peeling. Therefore, there has been a problem that the re-peeling operation may not be performed smoothly.

  That is, the inner layer portion in the mouth tube portion has a high rigidity because of its large thickness, and therefore requires a relatively large pressure for the reverse bending deformation to achieve separation from the outer layer portion, as described above. Because of its high rigidity, the elastic restoring force is also large, so that it easily returns to a close contact state after peeling.

  Even if the inner layer part in the mouth tube part re-adheres to the outer layer part, the outer layer part and the inner layer part are already separated, so re-peeling should be easily achieved if there is no change in state, When hot water enters the hole, re-peeling of the inner layer portion with respect to the outer layer portion becomes extremely difficult due to the action of the surface tension of the hot water.

  Therefore, the present invention was devised to solve the above-mentioned problems in the prior art, and the inner layer portion is previously peeled from the outer layer portion in the mouth portion of the delami bottle, and this peeled state is maintained. The purpose of this is to secure a passage for the introduction of outside air between the outer layer and inner layer of the Delami bottle, thereby reliably preventing the occurrence of unauthorized deformation of the container due to the content liquid being dispensed. And

Among the present invention for solving the above technical problems, the means of the invention according to claim 1 is:
A blow molded container comprising an outer layer made of a synthetic resin that forms a fixed outer shell and an inner layer made of a flexible synthetic resin that is detachably laminated on the outer layer to form an inner bag;
Inserting and assembling an intake pin that forms an intake path for the outside air between the outer layer and the inner layer into the intake hole opened in the outer layer portion of the mouth tube portion of the container body;
This intake pin is inserted into the intake hole of the container body into a cylindrical assembly part and connected to the tip of the assembly part, and the assembly part is inserted into the intake hole so that the outer layer portion Protruding from the inner surface, pushing the inner layer portion near the intake hole away from the outer layer portion, and having a protruding portion that forms a separation space between the inner layer portion and the outer layer portion,
It is in.

  In the first aspect of the present invention, the protruding portion of the intake pin inserted and assembled in the intake hole formed in the outer layer portion of the mouth tube portion of the container body has the inner layer portion near the intake hole in the outer layer portion. Since the separation space is formed by being pushed away from the surface to allow outside air to freely enter, this separation space secures a path for the outside air to enter between the outer layer and the inner layer.

  Pushing away from the inner layer part of the protruding part from the outer layer part is inevitably and easily achieved by simple insertion assembly of the intake pin into the intake hole, and more stable by fitting the assembled part to the intake hole. Therefore, the peeling space is formed easily, reliably and stably.

  According to the second aspect of the present invention, in the configuration of the first aspect of the present invention, a flange that abuts against the opening edge of the intake hole is provided on the outer periphery of the base end portion of the assembly portion where the opening is provided. , A locking rod for holding the insertion assembly is provided around the outer periphery of the base end portion, which is a continuous end portion of the protruding portion with the assembled portion, and at least the proximal end portion of the protruding portion has This is in addition to the fact that an air vent that communicates with the interior was opened to form an intake pin.

  In the invention according to claim 2, the insertion assembly limit position of the intake pin with respect to the intake hole is set by the flange, and the intake pin of the intake pin with respect to the intake hole is locked by getting over the intake hole opening edge. The intake assembly is secured, and the intake passage is formed by the intake pins by forming the vent.

  The invention according to claim 3 is the arc plate piece shape that is assembled to the base end portion of the assembly portion of the assembly portion according to the invention according to claim 1 and is elastically attached to the mouth tube portion. This is in addition to the fact that a pair of arm pieces are connected to form an intake pin.

  In the invention according to claim 3, the assembled arm piece exhibits both the function of setting the assembled limit position with respect to the intake hole of the intake pin and holding the assembled assembly, so that it protrudes from the assembled portion. The above-mentioned function is not required for the main body portion constituted by the portion, and the structure of the main body portion of the intake pin is simplified correspondingly.

  The invention described in claim 4 is obtained by adding the configuration of the invention described in claim 1, 2 or 3 to the protruding portion in the shape of a thin rod that can be easily bent and deformed.

  In the invention of claim 4, the thin rod-like protruding portion is bent by the drag of the inner layer portion, and the peeling space is formed between the outer layer portion and the inner layer portion while being bent. In order to form the separation space, an excessive force is not strongly applied to the inner layer portion.

  The invention described in claim 5 is the configuration of the invention described in claim 4, with the addition of a configuration in which the vicinity of the proximal end of the protruding portion in the form of a thin rod is reduced to form an easily bent portion. .

  According to the fifth aspect of the present invention, the vicinity of the proximal end portion is reduced in diameter to form an easily bent portion, thereby making it easier to bend the thin rod-like protruding portion from the proximal end portion of the shape surface. In the process of inserting and releasing the inner layer portion, it is possible to reliably prevent the inner layer portion from being broken by the tip of the protruding portion.

  The invention according to claim 6 adds that the length of the protruding portion is set to a value reaching the boundary portion between the mouth tube portion and the shoulder portion of the container body in the configuration of the invention according to claim 4 or 5. It is a thing.

  In the invention described in claim 5, between the outer layer portion and the inner layer portion of the boundary portion between the mouth tube portion and the shoulder portion of the container body, which is difficult to peel and easy to re-adhere after peeling, Since the protruding portion enters and secures the separation space, the difficulty of forming the separation space at the boundary portion between the mouth tube portion and the shoulder portion is eliminated.

Since the present invention has the above-described configuration, the following effects can be obtained.
In the first aspect of the present invention, it is possible to secure an entry path for the outside air between the outer layer and the inner layer from the intake hole formed in the outer layer portion of the mouth tube portion of the container body. Since the intrusion path of the inner layer is formed in a simple, reliable and stable state, it is possible to obtain a smooth peeling operation of the inner layer with respect to the outer layer and to eliminate the occurrence of unauthorized deformation due to the negative pressure of the container body it can.

  In the invention described in claim 2, since the insertion assembly of the intake pin into the intake hole can be achieved easily and stably, and the entire intake pin can be easily downsized. It can be simple.

  In the invention according to claim 3, since the structure of the main body portion composed of the assembled portion and the protruding portion of the intake pin can be simplified, the main body portion of the intake pin can be downsized. Can be sufficiently achieved.

  In the invention according to claim 4, in order to form the separation space, it is possible to safely form the separation space as an outside air introduction path without causing an excessive force to act on the inner layer portion. it can.

  In the invention according to claim 5, the thin rod-like protruding portion is easily bent from the base end portion, and in the process of inserting the intake pin and pushing away the inner layer portion, the inner layer portion of the protruding portion is pushed. Breakthrough can be reliably prevented.

  In the invention according to claim 6, since a separation space communicating with the intake hole is secured at the boundary portion between the mouth tube portion and the shoulder portion of the container body, which is difficult to peel off and easily re-adheres after peeling. The difficulty of achieving separation between the outer layer and the inner layer at the boundary portion between the cylindrical portion and the shoulder portion can be eliminated, and an extremely smooth peeling operation of the inner layer with respect to the outer layer can be obtained.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a semi-longitudinal sectional view showing an embodiment of a synthetic resin blow-molded container according to the present invention in which a dispensing pump 19 is assembled. The intake pin 8 is assembled to the container body 1.

  The container body 1 has a laminated wall structure of a synthetic resin outer layer 2 that forms a fixed outer shell and a flexible synthetic resin inner layer 3 that is detachably laminated on the outer layer 2 to form an inner bag. A thread is engraved on the outer peripheral surface of the bottomed cylindrical body portion 7 at the upper end thereof through a tapered cylindrical shoulder portion 6 whose diameter is reduced upward. In addition, a mouth tube portion 4 having an intake hole 5 is continuously provided.

  The intake pin 8 is connected to the cylindrical assembly portion 9 fitted into the intake hole 5 and the tip of the assembly portion 9, and the assembly portion 9 is inserted into the intake hole 5 to thereby A protruding portion 11 that protrudes from the inner surface of the outer layer 2 portion in the cylindrical portion 4 and pushes the inner layer 3 portion near the intake hole 5 away from the outer layer 2 portion to form a separation space S between the inner layer 3 portion and the outer layer 2 portion. It has the composition which has.

  The assembling of the pouring pump 19 having the nozzle head 20 with respect to the container body 1 is formed at the upper end of the body portion of the pouring pump 19 with the body portion of the pouring pump 19 inserted into the container body 1. The outer flange-like assembled flange 21 is placed on the upper end surface of the mouth tube portion 4 via the packing piece 22, and the assembled flange 21 is externally attached to the mouth tube portion 4 by the screwed tube wall 17. This is achieved by strongly pressing the upper end surface of the mouth tube portion 4 with the inner wall-shaped top wall piece 18 of the cap 16 to be screwed together.

  The first embodiment of the intake pin 8 shown in FIGS. 1 to 3 (particularly, see FIG. 3) is provided with an opening 10 of a cylindrical assembly 9 that fits almost closely into the intake hole 5. An outer flange-like flange 13 that sets a limit position of the fitting assembly 9 with respect to the intake hole 5 of the assembly portion 9 is provided around the base end portion, and is connected to the assembly portion 9 of the cylindrical protruding portion 11. A locking strip 14 is provided around the periphery of the base end portion, which is a portion, over the hole edge of the intake hole 5 and locked from the inside. Further, the protruding portion protrudes from the assembly portion 9 including the locking strip 14. 11 has a configuration in which a pair of slit-hole-shaped vents 12 are opened in the portion extending to 11.

  The intake pin 8 is assembled to the container body 1 in such a manner that the flange 13 abuts against the outer peripheral surface of the mouth tube portion 4 from the side of the portion 11 protruding into the intake hole 5 and at the same time the locking strip 14 is opened inside the intake hole 5. It is completed when it is inserted to the position where it is locked to the edge.

  When inserting and assembling the intake pin 8 into the intake hole 5, the protruding portion 11 protruding from the intake hole 5 to the inner surface of the outer layer 2 portion replaces the inner layer 3 portion facing the intake hole 5 with the outer layer 2 portion. Since it is separated from the outer layer 2 portion by being pushed away from the inner surface, a separation space S communicating with the intake hole 5 is thereby formed between the outer layer 2 and the inner layer 3.

  In this way, the intake pin 8 that forcibly pushes the inner layer 3 part away from the inner surface of the outer layer 2 part to form the separation space S is inserted into the intake hole 5, but the inlet 13 is attached to the outer surface of the outer layer 2 of the flange 13. Since it is stably maintained by the abutment and the engagement of the engagement strip 14 to the inner opening edge of the intake hole 5, the formation of the separation space S is stably maintained.

  A second embodiment of the intake pin 8 shown in FIG. 4 includes a simple cylindrical main body portion including an assembled portion 9 and a protruding portion 11 in which a pair of slit-like vent holes 12 are opened on a cylindrical wall. It is comprised from the arm piece 15 of the arc-plate piece shape assembled | attached to the mouth-tube part 4 by the elasticity at the base end part of the assembly | attachment part 9 by the elasticity.

  In the second embodiment of the intake pin 8, the insertion assembly of the main body portion composed of the assembly portion 9 and the projecting portion 11 into the intake hole 5 is performed in association with the mouth tube portion 4 of the assembly arm piece 15. Since the main body portion can be simply inserted into the intake hole 5, the structure is simple and the allowable range of molding dimension error is large, so that the molding is easy.

  In the third embodiment of the intake pin 8 shown in FIGS. 5 to 7, the protruding portion 11 of the intake pin 8 in the first embodiment is inserted and assembled into the intake hole 5. It has a length that reaches the boundary portion between the mouth tube portion 4 and the shoulder portion 6 and is formed into a thin rod shape that can be easily bent and deformed.

  In the third embodiment of the intake pin 8, when the intake pin 8 is inserted and assembled into the intake hole 5, the protruding portion 11 acts against the inner layer 3 portion and the inner layer 3 portion against the drag force. Is peeled off from the outer layer 2 portion to form a separation space S. However, as the protrusion 11 pushes away the inner layer 3 portion from the outer layer 2 portion, the drag of the inner layer 3 increases, so the drag of the inner layer 3 increases. Thus, the protruding portion 11 is bent and deformed between the outer layer 2 and the inner layer 3.

  In a state where the bending deformation direction of the protruding portion 11 is regulated to be downward, when the insertion assembly is pushed up to the assembling limit position of the intake pin 8 to the intake hole 5, the tip of the protruding portion 11 becomes the mouth tube portion. 4 and a shoulder portion 6 are formed, and a separation space S (see FIG. 5) is formed from the intake hole 5 to the boundary portion between the mouth tube portion 4 and the shoulder portion 6.

  Thus, in the third embodiment of the intake pin 8, the outer layer 2 and the inner layer 3 are difficult to peel off and are likely to come into close contact with each other even if they are peeled off. Since the separation space S is formed in advance, the intrusion of outside air from the intake hole 5 into the trunk portion 7 side is not hindered at the boundary portion between the mouth tube portion 4 and the shoulder portion 6, and the inner layer 3 is smoothly smoothed. The volume can be reduced.

  The third embodiment of the intake pin 8 can be applied not only to the first embodiment of the intake pin 8 but also to the second embodiment of the intake pin 8.

  The fourth embodiment of the intake pin 8 shown in FIGS. 8 to 10 is easy to reduce the diameter of the base end portion of the thin rod-like protruding portion 11 which is easily bent and deformed in the third embodiment of the intake pin 8. The bent portion 11a is formed and configured.

  In the fourth embodiment of the intake pin 8, as in the intake pin 8 of the third embodiment, when the intake pin 8 is inserted and assembled into the intake hole 5, the protruding portion 11 becomes the inner layer 3 portion. Against the drag, the inner layer 3 portion is peeled off from the outer layer 2 portion to form a peeling space S. However, because of the easily bent portion 11a, the inner layer 3 has a relatively small drag. Bend and deform between the outer layer 2 and the inner layer 3. For this reason, it is possible to reliably prevent the inner layer portion from being broken by the tip portion of the protruding portion 11.

  Although the embodiments of the present invention have been described along the examples, the present invention is not limited to these examples. For example, in the present embodiment, a container with an extraction pump is described. However, the intake pin of the present invention can be used for a squeeze-type delamination container that does not use a pump.

  As described above, the synthetic resin blow-molded container of the present invention can easily provide an entry path for the outside air between the outer layer and the inner layer by the action of the intake pin, and can provide a user-friendly delamination container. Expansion in a wider field is expected.

It is a principal part longitudinal half sectional view which shows one example of embodiment of this invention. It is a principal part expanded longitudinal sectional view which shows the assembly | attachment state of the 1st Example of an intake pin. It is a whole external appearance perspective view which shows the 1st Example of an intake pin. It is a whole external appearance perspective view which shows the 2nd Example of an intake pin. It is a principal part expanded longitudinal cross-sectional view which shows the assembly | attachment state of the 3rd Example of an intake pin. It is a whole external appearance perspective view which shows the 3rd Example of an intake pin. It is a whole longitudinal cross-sectional view which shows the 3rd Example of an intake pin. It is a principal part expanded longitudinal cross-sectional view which shows the assembly | attachment state of the 4th Example of an intake pin. It is a whole external appearance perspective view which shows the 4th Example of an intake pin. It is a whole longitudinal cross-sectional view which shows the 4th Example of an intake pin.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1; Container body 2; Outer layer 3; Inner layer 4; Mouth part 5; Intake hole 6; Shoulder part 7; Body part 8; Intake pin 9; Assembly part 10; Opening part 11; Protruding part 11a; ; Ventilation hole 13; Flange 14; Locking strip 15; Assembly arm piece 16; Cap 17; Screwing cylinder wall 18; Top wall piece 19; Discharge pump 20; Nozzle head 21; Assembly flange 22; ; Peeling space

Claims (6)

  Blow molding comprising an outer layer (2) made of a synthetic resin that forms a fixed outer shell, and an inner layer (3) made of a flexible synthetic resin that is detachably laminated on the outer layer (2) to form an inner bag Outside air between the outer layer (2) and the inner layer (3) is introduced into an intake hole (5) which is a container and is opened in the outer layer (2) portion of the mouth tube portion (4) of the container body (1). An intake pin (8) that forms an intake path of the cylinder is inserted and assembled, and the intake pin (8) is fitted into the intake hole (5) and assembled with a cylindrical assembly portion (9). Continuing to the tip of the portion (9), the assembly portion (9) is inserted into the intake hole (5) and protrudes from the inner surface of the outer layer (2) portion, and near the intake hole (5) A protruding portion (11) that pushes the inner layer (3) portion of the inner layer (3) away from the outer layer (2) portion to form a separation space (S) between the inner layer (3) portion and the outer layer (2) portion; Configuration and synthetic resin blow molded container having.   A flange (13) that abuts against the opening edge of the intake hole (5) is provided around the outer periphery of the base end of the assembly portion (9) where the opening (10) is provided, and the protruding portion (11). A locking strip (14) for holding an insertion set is provided around the outer periphery of the base end portion, which is an end portion connected to the assembly portion (9), and at least the base of the protruding portion (11) is provided. The synthetic resin blow-molded container according to claim 1, wherein a suction port (8) is formed by opening a vent (12) communicating with the inside of the assembled portion (9) at the end.   At the base end of the assembly portion (9) where the opening (10) is provided, an arm piece (15) with an arc plate piece attached to the mouth tube portion (4) in a hug shape by elasticity. The blow molded container made of synthetic resin according to claim 1, wherein the intake pins (8) are arranged in series. .   The synthetic resin blow-molded container according to claim 1, 2 or 3, wherein the protruding portion (11) is formed into a thin rod shape that can be easily bent and deformed.   The synthetic resin blow-molded container according to claim 4, wherein the suction pin (8) is formed by reducing the diameter of the vicinity of the proximal end of the thin rod-like protruding portion (11) to form an easily bent portion (11a).   The synthetic resin blow molding according to claim 4 or 5, wherein the length of the protruding portion (11) is set to a value that reaches a boundary portion between the mouth tube portion (4) and the shoulder portion (6) of the container body (1). container.

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