JPH0423765Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a bottle that is biaxially stretch blow molded from a synthetic resin such as polyethylene terephthalate resin.

[Conventional technology]

Synthetic resin bottles are widely used as containers for storing liquids such as whiskey and soy sauce.

The most effective method for forming this bottle is biaxial stretch blow molding of a primary molded product made of a specified synthetic resin. Particularly when polyethylene terephthalate resin is used, it is possible to create a bottle that is thin and lightweight. Excellent strength and content resistance,
It had many advantages such as being able to be mass-produced at low cost.

However, because it is thin, for example, when the stored liquid is heated and filled and cooled, negative pressure is created inside the bottle, causing the wall of the bottle to dent inward.
It had a so-called sink mark and was deformed, making it extremely unsightly and difficult to hold.

In addition, blow-molded bottles made of synthetic resin naturally have a rounded shape as a whole, and their surfaces are smooth, making them slippery and difficult to grip.
It was necessary to attach a separate support using cardboard or the like.

[Problem that the invention attempts to solve]

The present invention is a biaxial stretch blow-molded bottle devised to eliminate the above-mentioned conventional drawbacks and inconveniences, and aims to prevent sink mark deformation and make it easy to hold.

[Means for solving problems]

The means of the present invention to solve the above problems is to have a pair of recesses with a substantially triangular cross section on both sides of the cylindrical body, and the pair of recesses are formed over almost the entire height of the body. The gripping portion formed in the remaining portion of the body other than the two recessed portions has a reinforcing rib in the form of a vertical groove to prevent deformation of the gripping portion.

[Effect]

The body of the bottle is recessed inward so that it has a generally triangular cross section.
Deformation caused in the cylindrical wall of the body due to the negative pressure generated within the bottle is absorbed by the depression centering on the bottom of the recess, and the body does not become distorted.

Further, since the recess is formed over almost the entire height of the body, the negative pressure generated within the bottle can be sufficiently absorbed by the recess.

Since the distance between the bottoms of the pair of recesses in the body is small, fingers can easily enter from the sides and grip the recesses.

And, since the grip part remaining on the body part by depression molding of both concave parts faces the palm part of the hand,
This facilitates gripping, and when force is applied to the gripping portion, the gripping portion is provided with reinforcing ribs in the form of longitudinal grooves, so the reinforcing action of these reinforcing ribs prevents the gripping portion from becoming distorted. It does not deform, making it easier to grasp.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

The bottle 1 has a mouth 3 connected to the upper end of a cylindrical body 2 with a bottom, and recesses 4 provided on both sides of the body 2 extend over almost the entire height of the body 2. The tapered wall 6 is provided with a substantially triangular cross section and is depressed toward the bottom 5 at the center.
It is formed by

The gripping portion 7, which is the rear side of the remaining portion of the body 2 other than the recess 4, has a vertical groove (second groove) extending at the same height as the recess 4 to prevent deformation of the gripping portion 7.
A pair of reinforcing ribs 8 (see figure) are recessed adjacent to the recess 4.

Further, in the front part of the remaining part of the body part 2 other than the recessed part 4, a plurality of lateral grooves 9 having a small groove width are recessed in parallel, and the front part of the body part 2 can be easily accessed from the side. Reinforced against crushing force.

The concave portion 4, the grip portion 7, the reinforcing ribs 8, and the horizontal grooves 9 formed in the body portion 2 are located in the portion of the body portion 2 between the pair of circumferential grooves provided around the upper and lower ends of the body portion 2. It is formed.

When negative pressure is generated within the bottle 1, the recess 4
As shown by the imaginary line in the figure, the body 2 deforms by sinking around its bottom 5 to absorb this negative pressure.
Inappropriate deformation will not occur due to the negative pressure generated within the bottle body 1.

The recess 4, which is deformed by sinking to absorb the negative pressure generated within the bottle 1, has reinforcing ribs 8 and lateral grooves 9 adjacent to each other at the front and back, and circumferential grooves are located above and below the recess 4. , the periphery thereof is in a state of being structurally reinforced, so that the recess 4 is easily deformed by itself, and the recess deformation that occurs in the recess 4 does not affect other adjacent parts.

[Effect of idea]

Since the present invention has the above-described configuration, it has the following effects.

Since the recesses formed on both sides of the body have a substantially triangular cross-sectional shape, they easily deform into the bottle centering on the bottom, and when negative pressure is generated inside the bottle. Since this recess quickly deforms and deforms to absorb this negative pressure, other parts of the bottle will not be improperly distorted or deformed.
The external appearance of the bottle can be maintained well.

Since the recess is formed over almost the entire height of the body, the surface area occupied by the body is relatively large, and therefore the degree of negative pressure that can be absorbed by depression deformation is large, making it an excellent and sufficient material. Negative pressure absorption effect can be obtained.

The gripping part is formed with reinforcing ribs that reinforce the gripping part against the gripping force, so when the gripping part is gripped, the gripping part does not deform unnecessarily.
It maintains a constant shape against the gripping force, making the gripping of the bottle by the gripping part extremely stable, which allows for smooth and good handling of the bottle by holding the gripping part. can.

In the recessed part, the gap between the bottom parts in the body is made small to form a gripping part, so fingers can easily enter from the side, and the recess can be firmly gripped by pinching both bottom parts with the fingertips. The gripping portion can be gripped with one hand in a good and stable state.

Since the recesses and reinforcing ribs have a simple recessed structure, they are easy to form and can be accurately and easily implemented.

[Brief explanation of drawings]

FIG. 1 is an overall side view showing an embodiment of the present invention. FIG. 2 is a plan sectional view taken at the center of the body of the embodiment shown in FIG. 1. Explanation of symbols, 1... Bottle, 2... Body, 3...
Mouth part, 4... Recessed part, 5... Bottom part, 6... Tapered wall, 7... Grip part, 8... Reinforcement rib, 9... Horizontal groove.

Claims (1)

[Scope of utility model registration request] A pair of recesses having a substantially triangular cross section are provided on both sides of the cylindrical body over almost the entire height of the body. A biaxial stretch blow-molded bottle provided with longitudinal groove-shaped reinforcing ribs to prevent deformation of the gripping part.