JP4209288B2 - Blow-molded standing thin container suitable for pouch replacement - Google Patents

Description

  The present invention relates to a blow molded standing thin-walled container suitable for replacement of a pouch composed of a synthetic resin film or a metal film, and the container is intended to be easily opened with a simple operation. It is.

Deferred type containers that contain shampoo, rinse, liquid soap, cosmetics, etc. are generally equipped with a dispenser that allows the appropriate amount of content to be dispensed, and such containers are replenished with the contents. In order to reduce the constituent materials as much as possible, a thin-walled blow bottle made of a synthetic resin film or a metal film and a synthetic resin (for example, stretched polypropylene resin) is used as a refill container (for example, a patent). Reference 1 and Patent Reference 2).
JP-A-11-11496 JP 2002-225842 A

  By the way, among the conventional refill containers, the pouch is widely used as a container for refills because the volume of the container can be reduced and the manufacturing cost can be reduced and the materials used can be reduced. Since the container itself is not stretched, it is impossible to fit the spout into the mouth of the container to be refilled, and there is a concern that the contents may be spilled during refilling. The inconvenience of having to use such tools was left.

  In this regard, the blow molded bottle has a tension in the container itself even if it is thinned, and the pouring part can be inserted into the mouth part of the container to be refilled, and the mouth part is usually provided with a cap. Even if the contents are left over, it is possible to store the contents by closing the cap with a cap, and it is suitable for refilling containers compared to pouches that use tools such as bags when opening the container. However, containers that are bottle-shaped in appearance are appealing to consumers in terms of sales promotion compared to containers such as pouches, in order to give them a sense of value compared to reducing the materials used by reducing the thickness. It was unsatisfactory.

  An object of the present invention is to propose a novel blow molded standing thin-walled container that enhances appeal to consumers for sales promotion and can be easily opened by a tearing operation without requiring tools such as a bag.

The present invention provides a thin fuselage wall part that forms a filling space for the contents and allows the opposing side walls to adhere to each other to reduce the filling space, and a lower end of the fuselage wall part. A thin wall bottom wall for standing up the body wall portion with or without the contents, and protruding integrally from the body wall portion or the bottom wall portion to open the tip of the contents, A blow molded standing thin-walled container comprising: a thin-walled pouring portion to be formed; and a filling portion that is provided at an upper portion of the body wall portion and supplies contents to a filling space of the body wall portion,
The pouring part is integrally formed with a closing plug that opens its tip by tearing along the planned break line,
The planned fracture line is a blow molded standing thin-walled container suitable for substituting for a pouch, which is provided substantially parallel to the extending direction during blow molding and is formed by thinning by post-processing. .

  It is preferable that the closing plug has a finger hook portion that is molded integrally therewith and hooks a finger when the blocking plug is torn off.

  The fracture line is preferably formed by a narrow groove having a concave cross section, and such a narrow groove is formed by thinning at the time of blow molding or by thinning by post-processing after blow molding. Can be formed.

  The direction of stretching is particularly preferably the direction intersecting the longitudinal direction of the container.

  When a blow planned line that is parallel to or close to the direction in which the resin stretches is provided during blow molding, it can be easily cut off by the tear line at the planned break line, so there is no need for tools such as a bag when opening the container. .

  Hereinafter, the present invention will be described more specifically with reference to the drawings.

  1 (a) and 1 (b) show an embodiment of a container according to the present invention. In FIG. 1, reference numeral 1 denotes a filling space for contents, and the opposing side walls are brought into close contact with each other to fill the container. A thin-walled body wall portion 2 that enables volume reduction of the space is a thin-walled bottom wall portion that is integrally connected to the lower end of the body wall portion 1 and stands up with or without the contents.

  Further, 3 is a thin-walled pouring portion that protrudes integrally from the upper end corner of the body wall portion 1 and is opened by cutting off the tip to form a content pouring path, and 4 is a portion of the body wall portion 1. The filling portion is provided at the upper portion and supplies the contents to the filling space. The filling portion 4 can be sealed at its open end by heat fusion or the like after filling the contents.

  Reference numeral 5 denotes a closing plug integrally formed at the tip of the pouring part 3, and 6 denotes a planned breaking line formed by a narrow groove having a concave cross section for tearing the closing plug 5.

  In general, in the direct blow molding method, a resin heated and melted by an extruder is extruded from a die head as a cylindrical body called a parison, and the lower part of the parison is sandwiched and fused with a mold, and air is blown into the inside. It is formed into a product having a desired shape. At this time, the outer diameter of the parison is extruded smaller than the outer diameter of the product to be molded. Therefore, when the air is blown in, the parison is stretched in the lateral direction, and the direction X (container for stretching the planned fracture line 6 is expanded. This part is easy to break in the direction along the direction of stretching. In the direction perpendicular to the direction, it is difficult to break).

  In order to open such a container, it is only necessary to hook a finger on the finger hook portion 5a of the sealing plug 5 and pull the finger, and the sealing plug 5 can be easily torn off at the planned breaking line 6.

  The fracture line is basically preferably formed by a narrow groove having a concave cross section, and such a narrow groove can be formed by thinning during blow molding. In processing, for example, the thickness may be reduced by scraping with a cutting blade, and this point can be appropriately selected.

  FIG. 2 shows another embodiment of the container according to the present invention. Although FIG. 1 shows the sealing plug 5 provided with the finger hook portion 5a, the sealing plug 5 can be provided with a knob 5b as shown in FIG. 2, and the knob 5b is twisted. Thus, it becomes possible to easily disconnect the closing plug 5 from the planned breaking line 6.

  The container according to the present invention can be manufactured by blow molding a synthetic resin such as polyethylene, polypropylene or polyethylene terephthalate, and can be made compact by folding similar to a pouch. It is preferably about 0.5 mm.

  In FIG. 1 and FIG. 2, the pouring part 3 is shown as an example protruding integrally from the upper end corner of the body wall part 1, but when pouring the contents, the pouring part 3 is shown as a bottom wall part. It may be a pop-up type that protrudes from 2 and can be depressed toward the inside of the body wall portion 1 when the container stands, and the formation position of the extraction portion 3 can be variously changed according to the application.

  The container has a structure composed of a single resin, a structure in which two or more kinds of resins are laminated, and is composed of two or more kinds of resins including a barrier layer such as an ethylene vinyl alcohol copolymer or nylon. A multilayer structure is applicable, and this point is not limited. Moreover, about the bottom wall part 2, it is possible to form a concave or convex line, and this makes it easy to fold the container.

  The volume can be reduced by folding the container in the same manner as a pouch, and the closure plug can be easily removed by tearing, so that it can be used for a wide range of applications as a refill container.

The embodiment of the container according to this invention is shown, (a) is a front view, (b) is a side view. It is the figure which showed other embodiment of the container according to this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Body wall part 2 Bottom wall part 3 Extraction part 4 Filling part 5 Blocking plug 5a 5b Knob part 6 Breaking line

Claims (4)

A thin wall of the body wall that partitions the filling space for the contents and enables the volume of the filling space to be reduced by bringing the opposing side walls into close contact with each other, and the body wall connected integrally to the lower end of the body wall A thin-walled bottom wall portion that stands up with or without the contents, and a thin-walled portion that protrudes integrally from the body wall portion or the bottom wall portion and opens the tip to form a content pouring path A blow molded standing thin-walled container comprising a pouring part and a filling part provided at the upper part of the body wall part for supplying contents to the filling space of the body wall part,
The pouring part is integrally formed with a closing plug that opens its tip by tearing along the planned break line,
The blow-molded standing thin-walled container suitable for substituting for a pouch, wherein the planned fracture line is formed substantially parallel to the extending direction during blow molding and is formed by thinning by post-processing .   The blow-molded standing thin-walled container according to claim 1, wherein the closure plug is formed integrally therewith and has a finger hook portion for hooking a finger when the closure plug is torn off.   The blow molded standing thin-walled container according to claim 1 or 2, wherein the planned fracture line is formed by a narrow groove having a concave cross section.   The blow molded standing thin container according to any one of claims 1 to 3, wherein the extending direction is a direction intersecting with a longitudinal direction of the container.

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