JP2933232B2 - Plastic bottle with handle - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a plastic bottle with a handle formed by attaching a separate handle to a plastic bottle main body.

(Prior Art) Conventionally, in the case of a plastic bottle made of a resin such as polyethylene terephthalate, which is difficult to be molded simultaneously with the main body and the handle, as shown in a side view in FIG. In this case, a handle mounting recess 2 is formed on the upper surface, and upper and lower ends of a separate handle 3 are mounted on the upper and lower surfaces of the recess.

(Problems to be Solved by the Invention) In the above-mentioned conventional plastic bottle with a handle, if the concave portion is made large in order to make it easy to hold, the strength improvement by stretching orientation is small because the distance from the preform is short at the time of molding the main body. Therefore, there has been a problem that the strength of the handle attachment portions on the upper and lower surfaces of the concave portion is insufficient and the handle is easily detached.

(Means for Solving the Problems) The present invention solves the above problems by devising a cross-sectional shape of a plastic bottle main body.
The gist of the present invention is a plastic bottle with a handle formed by forming a concave portion for attaching a handle on the side surface of the plastic bottle body and attaching a separate handle to the concave portion, wherein the cross-sectional shape of the plastic bottle body protrudes outward. A corner is formed, and the recess is formed so as to cut out one ridge including the corner, and a fitting arm is formed from above and below the handle toward the inside of the recess, and a tip of the fitting arm is formed. A locking projection is formed on the locking projection, and the inner wall of the recess is fixed to the locking projection so as to wind around the locking projection, and the cross-sectional shape of the bottle body above and below the handle mounting portion of the recess protrudes outward. It is a plastic bottle with a handle, which has a rounded corner. Since the cross-sectional shape of the bottle main body above and below the recess forms an angle protruding outward, this corner is largely stretched and oriented at the time of molding, and the upper and lower surfaces of the adjacent recess are also dragged by this. It is stretched and oriented to improve strength.

 The details will be described below with reference to the drawings.

FIG. 1 is a side view showing an example of a bottle with a handle of the present invention,
FIG. 2 is a sectional view taken along the line II-II of FIG. 1, and FIG.
FIG. 4 is a partial sectional view showing another example of the present invention, FIG. 4 is a partial sectional view showing another example of the present invention, and FIG.
FIG. 7 is a sectional view taken along line VI-VI, and FIG. 7 is a side view of a conventional plastic bottle with a handle.

In the example shown in FIGS.
Has a generally heptagonal columnar shape, and has a handle mounting recess 2 formed so as to cut out one ridge. As a result, as shown in FIG. 2, the upper part of the handle mounting part of the concave part 2 forms one corner of a heptagon, that is, the lower part forms a corner part 11 protruding outward, as shown in FIG. ing. As shown in FIGS. 2 and 3, since these corners 11 have a greater distance from the preform 4 than the adjacent surface, the degree of stretching orientation of the upper surface 21 and the lower surface 22 of the concave portion 2 increases accordingly. The handle 3 is reinforced and the mounting strength of the handle 3 is improved.

In the example of FIG. 4, a fitting arm 31 extending inward from the upper end of the handle 3 is formed, and a locking projection 32 is formed at the tip of the fitting arm 31. The wall is fixed so as to wind around the locking projection 32. Since the locking projection 32 is located at the inner part of the recess 2, that is, near the center, the resistance is small when the wall of the handle mounting portion of the recess is not extended so much that it can be securely turned around the small locking projection 32. Fixed.

In addition, in the example of FIG. 5, the wall on the upper surface of the concave portion 2 wraps around from both sides at the base of the fitting arm 31, and is further firmly fixed, as indicated by a dotted line 23. Further, a concave fitting portion 33 is provided on the side surface of the handle 2, and the wall which goes around on both sides cuts into the concave fitting portion 33 as shown in FIG. 6 to secure the fixing. As shown in FIG. 1, the mounting surfaces of the upper surface 21 and the lower surface 22 of the recess 2 are inclined so as to become narrower toward the back, and the upper surface and the lower surface of the fitting arm 31 of the handle 3 are also inclined. Therefore, the contact area is widened and the stress is dispersed, so that the mounting strength is improved. When the upper surface 21 and the lower surface 22 of the concave portion 2 are inclined inward so as to be narrowed inward, when the main body 1 is formed, the main body 1 is uniformly stretched as a whole, and a partial low-stretched portion is less likely to be generated. improves. In particular, if the shoulder 13 of the bottle main body is positioned below the upper fitting arm 31 of the handle 2, the effect of extending the upper surface 21 of the concave portion is further enhanced.

In order to manufacture the plastic bottle with a handle of the present invention, the handle 3 and the preform are fixed at predetermined positions of the blow mold, and the bottle wall is wound around the locking projection 32 of the handle 3 simultaneously with the blow molding. Further, if necessary, the side of the fitting arm 31 can be turned around to the concave fitting portion 33, so that the blow molding and the grip 3
Installation is completed at once.

(Effect of the Invention) As described above, the plastic bottle with a handle of the present invention
The cross-sectional shape of the plastic bottle main body has a corner protruding outward, the recess is formed so as to cut out one ridge including the corner, and the fitting arm from above and below the handle is attached to the recess. A locking projection is formed at the tip of the fitting arm and is fixed to the locking projection so that a wall at the back of the recess is wound around the locking projection. The upper and lower sides of the recess around the handle mounting portion are stretch-oriented because the cross-sectional shape of the bottle body at the top and bottom of the bottle forms outwardly protruding corners. is there.

[Brief description of the drawings]

FIG. 1 is a side view showing an example of a bottle with a handle of the present invention, FIG. 2 is a sectional view taken along the line II-II of FIG. 1, and FIG.
II is a sectional view, FIG. 4 is a partial sectional view of IV in FIG. 1, FIG. 5 is a partial sectional view of another example of the present invention, and FIG.
FIG. 7 is a sectional view taken along the line VI, and FIG. 7 is a side view of a conventional plastic bottle with a handle. DESCRIPTION OF SYMBOLS 1 ... Plastic bottle main body 11 ... Corner part, 2 ... Recessed part for attaching a handle 3 .... Handle

Continuation of the front page (56) References JP-A-63-175038 (JP, U) JP-A 64-53031 (JP, U) JP-A 59-147039 (JP, U) , A) (58) Field surveyed (Int. Cl. ⁶ , DB name) B65D 23/00-23/16

Claims (1)

(57) [Claims] 1. A plastic bottle with a handle formed by forming a concave portion for attaching a handle on a side surface of a plastic bottle main body and attaching a separate handle to the concave portion, wherein a cross-sectional shape of the plastic bottle main body is outward. The fitting arm has a protruding corner, and the recess is formed so as to cut out one ridge including the corner, and a fitting arm is formed from above and below the handle toward the inside of the recess, and the fitting arm is formed. A locking projection is formed at the tip of the bottle, and the inner wall of the recess is fixed to the locking projection so as to wind around the locking projection, and the cross-sectional shape of the bottle body above and below the mounting portion of the recess is outward. A plastic bottle with a handle, which has a protruding corner.