JP2006232380A - Peeling type laminated container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To eliminate deformation of a container main body occurring by the joining of a bag body and the container body in a peeling type laminated container in which the bag body is peeled from the container body by the capacity reduction of the bag body accompanied with the discharging of a content. <P>SOLUTION: This container 1 comprises the bag body 2 in which the content is filled, and the container body 3 which houses the bag body 2 by fixing the mouth section 2a of the bag body 2 to the mouth section 3a of the container body 3. A though-hole 4 is provided on the container body 3, and the bag body 2 is peeled from the container body 3 by the volume reduction of the bag body 2 accompanying the discharging of the content. For the container 1, two strip-like thicker sections 5 which extend into a strip-like shape in the axial direction of the container 1 across the through-hole 4, and have a thickness T5 being thicker than the thickness Tm of the other section of the bag body 2 are provided on the bag body 2. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention comprises a bag body that is filled with contents, and a container body that holds the bag body by fixing the mouth part of the bag body to the mouth part, and the bag body is in good condition from the container body. The present invention relates to a peelable laminate container that can be peeled off.

  In the peelable laminated container, in order to peel the bag body from the container body in good condition, before filling the bag body with the contents, the air is forced from the through-hole provided in the container body (hereinafter referred to as “delamid air”). The so-called “initial delamination method” in which the bag body is once peeled off from the container body is known.

Further, in a conventional peelable laminated container employing such an initial delamination method, a bag body to be filled with contents and a mouth portion of the bag body are held by the mouth portion, and the bag body is accommodated therein. There is a container body that has a through hole in the container body, and the bag body is peeled off from the container body by volume reduction of the bag body as the contents are poured out (see, for example, Patent Document 1). ).
Japanese Patent No. 3356172

  In such a conventional peelable laminated container, the delami air fed from the through hole of the container main body is guided between the bag body along the axial direction of the container main body, and from the through hole along the axial direction. It can be peeled to a certain height range.

  However, if the bag body and the storage container are in close contact with each other in a pseudo-adhesive state, depending on the adhesion strength, delami air is not introduced to the predetermined height range of the container body, Delami air may be introduced along the circumferential direction. In this case, the introduction path formed by the introduction of air may be blocked due to water intrusion from the through hole, etc. When the volume of the bag body is reduced, the body portion of the container main body from which the bag body has not peeled is also deformed, resulting in a poor appearance of the container main body.

  The problem to be solved by the present invention is to eliminate the deformation of the container body caused by the close contact between the bag body and the container body.

  The present invention comprises a bag body that is filled with contents, and a container body that houses the bag body by fixing the mouth portion of the bag body to the mouth portion, and a through hole is provided in the mouth portion of the container body. In the peelable laminated container in which the bag body is peeled off from the container main body by volume reduction with the contents being poured out, along the axial direction of the container with the through-hole sandwiched in the bag body It is characterized in that it is provided with at least two strip-shaped thick portions that extend in a strip shape and are thicker than other portions of the bag.

  In this invention, it is preferable to provide the said strip | belt-shaped thick part so that it may protrude in the inside of the said bag body from the inner surface side of the said bag body. Moreover, in this invention, it is preferable that the thickness in the said strip | belt-shaped thick part is 1.8-7 times the average thickness of the said bag. Furthermore, in the present invention, it is preferable to provide the strip-like thick portion so that the central angle between the inner edges thereof is 1 to 4 times the central angle corresponding to the diameter of the through hole.

  According to the peelable laminated container of the present invention, since the strip-like thick part of the container body is thicker than the other parts of the container body, the strip-like thick part is less likely to be deformed. In addition, according to the present invention, the band-shaped thick portion extends along the axial direction across the through hole, so that the air forcedly fed from the through hole in the mouth portion of the container body is It introduce | transduces between the said strip | belt-shaped thick parts along an axial direction. Thus, even when the bag body is in close contact with the container body, the bag body is axially moved from the container body by forcibly sending air between the bag body and the container body by the initial delamination method. It can be peeled in a certain range. Therefore, according to this invention, the deformation | transformation of the container main body which arises by contact | adherence with a bag body and a container main body can be eliminated.

  Further, in the present invention, if the band-like thick portion is provided so as to protrude from the inner surface side of the bag body into the bag body, even when the adhesion between the bag body and the container body is large, If necessary, it becomes easy to adjust the thickness of the strip-shaped thick portion, and the initial delamination between the strip-shaped thick portions can be satisfactorily achieved.

  By the way, if the thickness of the belt-like thick part is thinner than 1.8 times the average thickness of the bag, the rigidity of the belt-like thick part is almost the same as the rigidity of other parts of the bag, The effect of the beam in the strip-shaped thick part on the volume reduction of the bag is small. Further, when the thickness of the strip-shaped thick portion is thicker than seven times the average thickness of the bag, the rigidity of the strip-shaped thick portion becomes too high, so the effect of the beam in the strip-shaped thick portion May be too large to reduce the volume of the bag itself. For this reason, if the thickness of the strip-like thick part is 1.8 to 7 times the average thickness of the bag, good initial delamination can be achieved with a small amount of air.

  Furthermore, even if the strip-like thick portion is provided so that the central angle between the inner edges thereof is 1 to 4 times the central angle corresponding to the diameter of the through hole, a good initial delamination can be obtained with a small amount of air. Can be achieved.

  Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 is a cross-sectional view of an essential part showing a peelable laminated container (hereinafter simply referred to as “pump container”) 10 with a pump dispenser which is an embodiment of the present invention. Moreover, FIG. 2 is a principal part perspective view which shows the peelable lamination container 1 which concerns on the same form, and FIG. 3, 4 is the top view and principal part side view of the peelable lamination container 1, respectively.

  In FIG. 1, reference numeral 1 denotes a peelable laminated container (hereinafter referred to as “delamid container”) according to the present invention. The delamination container 1 includes a bag body 2 that is filled with contents and a container body 3 that houses the bag body 2. Reference numeral P denotes a pump dispenser screwed to the mouth 3a of the container body 3 through the cap C while maintaining the airtight state of the bag body 2. The pump dispenser P is an existing one in which the contents of the bag body 2 are pumped from the tube A to the pump head P1 through the pump cylinder P2 and pushed out from the tip Po of the nozzle N by pressing the pump head P1. It is.

  In this embodiment, the bag body 2 is made of a flexible resin such as nylon or EVOH, and its mouth portion 2a is fixed to the mouth portion 3a of the container main body 3 and stored in the container main body 3.

  The container body 3 has a certain rigidity to maintain the outer shape of the delamination container 1, and is made of a resin such as high-density polyethylene. Further, the container body 3 is provided with a through hole 4 in its mouth 3a. Air is introduced between the bag body 2 and the container body 3 from the through hole 4 to facilitate the peeling of the bag body 2 from the container body 3.

  Further, the delamination container 1 is provided with two belt-like thick portions extending in a belt shape along the axis O direction of the delamination container 1 with the through-hole 4 interposed therebetween. In this strip-shaped thick portion 5, as shown by the symbol X in FIG. 3, the cross section of the protruding portion projecting into the interior of the delamination container 1 has an arc shape. Moreover, the thickness T5 of the strip-shaped thick part 5 is thicker than the thickness Tm of the other part of the bag 2 (Tm <T5).

  According to such a configuration, since the thickness T5 of the strip-shaped thick portion 5 is thicker than the thickness Tm of the other portion of the bag body 2, the strip-shaped thick portion 5 is less likely to be deformed. In addition, since the two strip-shaped thick portions 5 extend along the axial direction with the through-hole 4 interposed therebetween, the air forcedly fed between the strip-shaped thick portions 5 is delaminated. It is introduced between the bag body 2 and the container body 3 along the axis O direction of 1. Thus, even when the bag body 2 is in close contact with the container body 3, the bag body 2 can be peeled from the container body 3 by the initial delamination method. At this time, since air is introduced well in the direction of the axis O of the delamination container 1, air is introduced from the shoulder of the container 1 to the upper part of the trunk, and the shoulder and trunk of the bag 2 Since the initial delamination can be achieved by reversal starting from the boundary, the deformation of the container body 3 caused by the close contact between the bag body 2 and the container body 3 can be eliminated.

  As for the pump container 10, as the contents are poured out by the pump dispenser P, the bag body 2 is reduced in volume (shrinks), and the bag body 2 is peeled off from the container body 3. Thereby, the contents can be poured out from the bag body 2 without leaving it.

  The band-shaped thick portion 5 can be provided at any position from the mouth 2a to the bottom of the bag body 2, whereby the bag body 2 is peeled from the container body 3 along the axis O at the time of initial delamination. In this case, the amount L by which the bag body 2 is peeled from the through hole 4 may be adjusted. Moreover, in FIG. 1, the code | symbol R shows the peeling space formed between the bag body 2 and the container main body 3 by the air introduction at the time of initial delamination, and the extraction of the contents.

  By the way, in the delamination container 1, the strip-shaped thick portion 5 is provided so as to protrude from the inner surface side of the bag body 2 into the bag body 2 as shown in FIG. According to such a configuration, even when the adhesion between the bag body 2 and the container body 3 is large, it is easy to change the thickness of the strip-shaped thick portion 5, so that the thickness and the delamination air Dair (FIG. By appropriately setting the pressure and flow rate of 1), the bag body 2 can be easily separated from the container body 3 between the strip-shaped thick portions 5.

  In the present invention, when the thickness T5 of the belt-like thick part 5 is thinner than 1.8 times the average thickness Tm of the bag body 2, the rigidity of the belt-like thick part 5 is equal to the rigidity of the other part of the bag body 2. Since there is almost no difference, the effect of the beam at the belt-like thick part 5 on the volume reduction of the bag 2 is small. Further, if the thickness T5 of the belt-like thick part 5 is thicker than seven times the average thickness Tm of the bag 2, the rigidity of the belt-like thick part 5 becomes too high. It may be difficult to reduce the volume of the bag body 2 because the effect is too great. For this reason, if the thickness T5 of the strip-shaped thick part 5 is set to 1.8 to 7 times the average thickness Tm of the bag body 2, a good initial delamination can be achieved with a small amount of air.

  Furthermore, paying attention to the central angle θ1 corresponding to the diameter φ of the through-hole 4 and the central angle θ2 between the inner edges 5e of the strip-shaped thick portion 5, the central angle θ2 of the strip-shaped thick portion 5 is the central angle θ1. If it is provided so as to be 1 to 4 times, good initial delamination can be achieved with a small amount of air.

  The present invention can be variously modified within the scope of the claims. The strip-shaped thick portion 5 disposed in the bag body 2 only needs to have at least two sandwiching the through-holes 4, and the strip-shaped thick portion 5 may be provided in other portions. As a result, at least one new belt-like thick part 5 is provided in the portion of the bag 2 opposite to the two belt-like thick parts 5 sandwiching the through-hole 4 or the belt-like thick part 5 sandwiching the through-hole 4. Can also be constituted by a plurality of 5 groups of strip-like thick portions juxtaposed at least two in parallel.

It is principal part sectional drawing which shows the peeling-type lamination container with a pump dispenser which is one form of this invention. It is a principal part perspective view which shows the peeling type laminated container which concerns on the same form. It is a top view of the peeling type laminated container which concerns on the same form. It is a principal part side view of the peeling-type laminated container which concerns on the same form.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Peeling type laminated container 2 Bag body 3 Container body 4 Through-hole 5 Band-shaped thick part 5e Band-shaped thick part inner edge Tm Bag body thickness T5 Band-shaped thick part thickness

Claims (4)

A bag body for filling the contents, and a container body for storing the bag body by fixing the mouth portion of the bag body to the mouth portion, a through hole is provided in the mouth portion of the container body, In a peelable laminated container that peels the bag body from the container body by volume reduction of the bag body with dispensing,
The bag body is provided with at least two strip-shaped thick portions extending in a strip shape along the axial direction of the container with the through hole interposed therebetween and having a thickness greater than other portions of the bag body. Peeling type laminated container.   2. The peelable laminated container according to claim 1, wherein the strip-like thick portion is provided so as to protrude from the inner surface side of the bag body into the bag body.   3. The peelable laminated container according to claim 1, wherein the thickness of the belt-shaped thick portion is 1.8 to 7 times the average thickness of the bag. 4. The belt-like thick portion is provided so that a central angle between its inner edges is 1 to 4 times a central angle corresponding to the diameter of the through hole. The peelable laminate container according to item.

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