JP2006327620A - Synthetic resin-made container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a synthetic resin-made container which can be firmly held by a single hand and improved in the gripping property. <P>SOLUTION: In the synthetic resin-made container having a lip r to seal the container by attachably/detachably fitting a plug thereto/therefrom and equipped with a mouth part 2 to spout a content with the lip as a spouting end, a neck part 3 to integrally connect the mouth part 2 to a body part 1 of the container is provided. The neck part 3 is composed of a flange 3a directly connected to its outer wall at a lower end of the mouth part 2, a straight portion 3b connected to the flange 3a and having a side wall substantially parallel to the axial center of the container, and an inclined portion 3c which is gradually expanded from a terminating end of the straight portion 3b and continuous to the body part 1 of the container. An inflection point p located more inside than an outer edge 3a' of the flange 3a is provided on a boundary between the inclined portion 3c and the body part 1 of the container. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a container manufactured by blowing or injection molding a synthetic resin (thermoplastic resin) such as polyethylene terephthalate, and particularly intends to improve the grip property of the container.

  Synthetic resin containers such as plastic bottles can be efficiently produced and are relatively easy to handle, so in recent years they have been widely used as containers for alcohol, beverages, seasonings, etc. There are various sizes.

In order to blow mold such a container, it is manufactured by finishing a preform as a primary molded product previously formed by injection molding or extrusion molding so as to exhibit a desired external shape by biaxial stretching blow molding (for example, patents). (Refer to Reference 1), especially in large-sized containers such as bottles of sake that contain sake, it is difficult to handle with one hand when carrying the container or pouring the contents, and an improvement in grip is required. It was done. As a prior art regarding this point, there is known a plastic container in which a finger and a thumb are inserted between a flange of a bottle neck and a root of the bottle neck except for the bottle neck and the bottom (see, for example, Patent Document 2). ).
JP-A-6-127542 JP 59-126832 A

  The subject of this invention exists in the place which proposes the novel synthetic-resin container which aimed at the improvement of grip property about the large-sized container of a shoulder shoulder especially like a 1 bottle bottle.

The present invention is a synthetic resin container having a lip that detachably fits a stopper and sealing the container, and having a mouth portion for pouring the contents using the lip as a pouring end,
Providing a neck that integrally connects the mouth and the body of the container;
The neck has a flange directly connected to the outer wall at the lower end of the mouth, a straight part having a side wall connected to the flange and substantially parallel to the axis of the container, and a diameter gradually increased from the end of the straight part. It consists of an inclined part that continues to the body part of
The inclined portion is a synthetic resin container that forms a boundary with the main body portion of the container and has an inflection point located inside the outer edge of the flange. In a manufacturing container, it is preferable that the inclined portion is a concave or convex inclined surface.

  By configuring the neck that connects the mouth and body of the container with a flange, a straight part, and an inclined part, the thumb and finger can be easily inserted, and the finger is securely hooked to the flange, so the grip of the container is improved. Improved.

Hereinafter, the present invention will be described in more detail with reference to the drawings.
FIG. 1 shows an embodiment of a synthetic resin container (blow-molded container) according to the present invention as a shape similar to a one-necked bottle, wherein 1 in the figure is a main body portion (body) of a container having a plurality of annular grooves. 2 has a lip r for fitting the stopper detachably so as to seal the container, and a mouth part for pouring the contents with the lip r as an outlet end, and 3 for the mouth part 2 and the main body part 1 of the container. It is the neck that connects together.

  The neck portion 3 has a flange 3a which is horizontally arranged at the lower end of the mouth portion 2 and is directly connected to the outer wall thereof, a straight portion 3b which is connected to the flange 3a and has a substantially parallel side wall with respect to the axis L of the container, and the straight portion 3b It consists of an inclined part 3c that gradually increases in diameter from the end and continues to the upper part of the main body part 1 of the container. The boundary between the inclined part 3c and the main body part 1 of the container is inside the outer edge 3a 'of the flange 3a (container The inflection point p is located at a position approaching the axis L when the axis is L.

  When the neck 3 is formed with the flange 3a, the straight part 3b and the inclined part 3c, the finger (thumb, finger) is shaped to fit easily, which significantly improves the grip of the container as shown in FIG. As shown, the contents can be easily poured out with one hand.

The length of the straight portion 3b and L _1, if the length of the inclined portion 3c was L _2, L ₂ is good for twice or more L _1, the thereby possible soft contact.

  The dimension h from the side wall of the straight portion 3b to the outer edge 3a 'of the flange 3a is preferably 3.5 mm or more (1/2 or less of the maximum radius of the container) in order to ensure finger catching.

  The angle formed between the side wall of the straight portion 3b and the lower surface of the flange 3a is approximately 90 °, and the inclined surface of the inclined portion 3c is appropriately concave or convex.

  The synthetic resin container according to the present invention can be manufactured by applying the biaxial stretch blow molding method, but can also be manufactured by applying the injection molding method, and the molding method is not particularly limited.

  A container with improved grip that can be firmly held with one hand can be provided.

It is the figure which showed embodiment of the synthetic resin containers according to this invention. It is the figure which showed the extraction | pouring condition of the content by the synthetic resin containers shown in FIG.

Explanation of symbols

1 Body part 2 Container 3 Neck
3a flange
3b Straight section
3c Inclined part L Axis center p Inflection point

Claims (2)

A synthetic resin container having a lip for removably fitting a stopper and sealing the container, and having a mouth portion for pouring the contents using the lip as a pouring end,
Providing a neck that integrally connects the mouth and the body of the container;
The neck has a flange directly connected to the outer wall at the lower end of the mouth, a straight part having a side wall connected to the flange and substantially parallel to the axis of the container, and a diameter gradually increased from the end of the straight part. It consists of an inclined part that continues to the body part of
A synthetic resin container having an inflection point located inside an outer edge of the flange at a boundary between the inclined portion and a main body portion of the container. The synthetic resin blow-molded container according to claim 1, wherein the inclined portion has a concave or convex inclined surface.

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