Bottles and jars – Attachment or adjunct – Container support
Reexamination Certificate
1998-03-30
2001-03-06
Weaver, Sue A. (Department: 3727)
Bottles and jars
Attachment or adjunct
Container support
C215S399000, C220S759000
Reexamination Certificate
active
06196403
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a stretch blow molded bottle having a hanging tool provided on the neck portion thereof.
2. Background Art
It is known to injection mold a preform having a handle which is integrally formed and extended longitudinally and downwardly from a side surface positioned below a threaded portion of a neck of the preform and to stretch blow mold the preform into a bottle which has a thin body wall from a distal end of the neck to a bottom so as to obtain a bottle integrally having a handle.
This longitudinally long handle is thick so as to secure a certain strength. If a resin used as a material for molding the bottle is polyethylene terephthalate, although it has a certain hardness as no further process is provided after the injection molding, it lacks an impact strength. This might cause a damage of the handle portion when the bottle filled with contents accidentally fell down on the ground from a shelf and the like.
Therefore, as shown in
FIG. 4
, there has been provided a bottle which is integrally provided at its portion lower than its neck portion
2
of a bottle body
1
with a flat bendable hanging tool
3
which is long in its transverse direction.
The hanging tool
3
of the bottle
1
constructed in the above described manner is bendable at a narrow portion
30
of the hanging tool
3
, and one can carry the bottle by hanging his or her finger into an annular finger engaging tab
3
a
. Further, since the hanging tool
3
is formed flat and thin, it requires less amount of resin material than a conventional handle, and even if the hanging tool is bent at the narrow portion, the hanging tool can restore. Therefore, it is unnecessary to secure a space for the hanging tool
3
when the bottle is packed in a box.
However, in the above described bottle having the bendable hanging tool also, the hanging tool
3
is integrally formed at the time of injection molding of the preform
10
as shown in
FIG. 5
, and it is required to widen the width of the finger hanging portion so that one can easily hold the bottle. Therefore, there is a problem that the injection mold for molding the preform
10
with the bendable hanging tool
3
becomes large.
That is, in the injection mold, a flat cavity for the hanging tool is formed between parting surfaces of a mold A for use in molding the neck portion and a mold B for use in molding the body and the bottom, molten resin is injected and charged from the neck portion, thereby injection molding the entire preform. However, in order to sufficiently widely mold the finger hanging portion of the hanging tool, it is necessarily required to design the injection mold such that the flat cavity for the hanging tool projects outward from the neck portion of the preform, and such a design complicates and enlarges the injection mold.
The present invention has been accomplished to solve the above described problems, and it is an object of the invention to provide a bottle having a hanging tool which can be produced efficiently while suppressing the injection mold for a preform from being enlarged, by separately molding a bendable flat connection portion which is integrally formed with a neck portion of the preform and a handle portion which is detachably attached to the connection portion and is separately molded, thereby forming the hanging tool to be provided on the neck portion of the bottle.
SUMMARY OF THE INVENTION
To achieve the above abject, according to the present invention, there is provided a bottle having a hanging tool, the hanging tool being formed on a side of the bottle lower than a threaded portion of a neck portion thereof at the time of injection molding of a preform, a portion of the bottle corresponding to a distal end of the neck portion lower than the hanging tool to a bottom being formed thin by stretch blow molding, wherein the hanging tool comprises a flat and long connection portion extending sideways from the neck portion and having a length shorter than an outer diameter of the bottom of the bottle, and a separately molded wide annular handle portion, the connection portion being provided at its intermediate portion with a narrow portion crossing the connection portion transversely to reduce a thickness thereof, thereby making the connection portion vertically bendable at the narrow portion, a free end of the connection portion and the handle portion being formed at their predetermined locations with joint portions comprising a pair of engagement means to attach the handle portion detachably to the connection portion.
The bottle is made of thermoplastic resin including, for example, polyester resin such as polyethylene terephthalate, polyethylene naphthalate, and polypropylene. In the case of a bottle made of polypropylene as molding resin, flexibility of the hanging tool is increased due to the property of polypropylene. In the case of a bottle made of polyethylene terephthalate, even if the connection portion in remained as it is injection molded, the free end thereof exhibits flexibility due to molecular orientation of the narrow portion. Therefore, bending strength and impact strength of the connection portion are increased so that the connection portion can hardly break even if it is thin.
REFERENCES:
patent: 4231605 (1980-11-01), Newman
patent: 4395378 (1983-07-01), Alberghini et al.
patent: 4509639 (1985-04-01), Thompson
patent: 4516687 (1985-05-01), Tagichi et al.
patent: 4747519 (1988-05-01), Green et al.
patent: 4852762 (1989-08-01), Chou-Sheng
patent: 5202094 (1993-04-01), Jones et al.
patent: 5413261 (1995-05-01), Wu
patent: 5749497 (1998-05-01), Davis
patent: 5862929 (1999-01-01), Takeuchi et al.
patent: 0 732 187 A1 (1996-09-01), None
patent: 0 775 639 A1 (1997-05-01), None
patent: 03 268 907 (1991-11-01), None
A. K. Technical Laboratory Inc.
Weaver Sue A.
Weingarten, Schurgin Gagnebin & Hayes LLP
LandOfFree
Bottle having a hanging tool does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Bottle having a hanging tool, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bottle having a hanging tool will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2527148