JPH0665233U - Plastic bottle with handle - Google Patents

Abstract

(57) [Summary] [Purpose] While using a plastic bottle with a handle,
Prevents looseness at the fitting part between the handle and the bottle, and prevents the handle from coming off the bottle. A rib having a multiple ring shape or a spiral shape, which is similar to the outer peripheral shape of the handle mounting recess for increasing the strength of the wall surface, is formed in the handle mounting recess of the plastic bottle body.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a plastic bottle with a handle, in which a separate handle member is attached to a plastic bottle body and used for liquid contents such as fruit juice, liquid detergent, and developing solution.

[0002]

[Prior art]

 Recently, as the application range of plastic bottles has expanded as a container for liquid contents, the content volume to be filled has increased, and the demand for bottles with a handle of 1 liter or more has increased. Conventionally, a method of attaching a handle to a plastic bottle is a blow molding method, in which a part of the body of the bottle is formed into a recess at the same time as the bottle is molded into a handle, and a parison inside the handle (of a fused tubular shape) is used. (Molding material) is crushed and molded, and then cut to form a handle, or as disclosed in Japanese Utility Model Publication No. 55-101728, a fitting part is formed on a bottle body, and after molding, A separate handle was fitted to this fitting part to produce a bottle with a handle. PET bottles made of polyethylene terephthalate use stretch blow molding because of the characteristics of the material. The shape of this bottle is restricted and the pinch-off (fusion at the edge of the cut part of the molten parison) is melted. Due to insufficient adhesion, a method of attaching a separate handle member to the handle attachment recess is generally used for the PET bottle by the stretch blow molding method.

[0003]

[Problems to be solved by the device]

 However, in the case of a PET bottle with a separate handle attached, when the handle is used with the handle, the wall of the handle mounting recess of the bottle body is deformed by the weight of the contents of the bottle, and the bottle body and handle member are separated. There was a looseness in the fitting, or the handle member sometimes came off in a severe case. In order to prevent these accidents, the conventional methods for improving the strength of the wall surface of the handle mounting recess are to form an uneven surface extending in the vertical direction (Japanese Patent Laid-Open No. 2-191155), in the horizontal direction or in the diagonal direction. There is a method of forming extending ribs (Japanese Utility Model Laid-Open No. 64-11943), but the above method is a reinforcing method having directionality such as vertical direction, horizontal direction and diagonal direction, and filling of contents. Stable surface strength was not obtained with respect to strain such as shrinkage in all directions that occurs in the bottle body during use and during use of the bottle. For this reason, the handle member cannot be fitted into the bottle body after filling the contents, or when the bottle body and handle member are used, rattling may occur or the handle may come off. I couldn't prevent it completely.

[0004]

[Means for Solving the Problems]

 As shown in FIG. 1, the present invention is similar to the outer peripheral shape of the handle mounting recess for increasing the strength of the wall in the handle mounting recess (120) of the plastic bottle body (110). It is a plastic bottle (100) with a handle in which a rib (121) having a similar multiple ring shape or a spiral shape is formed.

In the handle mounting recess of the bottle body described above, the handle fitting portion having strength of the bottle body and the fitting portion having strength of the separate handle member (130) are firmly secured. It is carried and held.

Further, the rib for increasing the strength of the wall surface is preferably similar in shape to the outer peripheral circumference of the handle mounting recess, and more preferably concentric or spiral. Further, the rib may be a rib protruding in a convex shape (convex rib) or a rib having a concave groove (concave rib), and may be partially missing as long as it is 50% or less in total.

The plastic bottle to which the present invention is applied is mainly a PET bottle made of polyethylene terephthalate by a stretch blow molding method, but is not limited to this. The material of the separate handle is mainly plastic, but metal or wood may be used.

[0008]

[Action]

 When using a plastic bottle filled with contents with a handle, the entire weight of the bottle is applied to the wall of the handle mounting recess of the bottle body. If the wall surface of the handle mounting recess cannot withstand this load, the wall surface of the handle mounting recess will be deformed, and if the deformation becomes large, the handle mounting part of the handle mounting recess will also be deformed, and the bottle Rattling occurs at the fitting portion between the body and the handle member. Further, when the deformation becomes large, the handle member may come off from the bottle body. In the plastic bottle with a handle of the present invention, since the multiple ring-shaped ribs are formed on the wall surface of the recess for mounting the handle of the bottle body to increase the strength against load, the handle of the bottle body as described above is formed. Deformation of the wall surface of the mounting recess is less likely to occur, and as a result, it is possible to prevent looseness in the fitting portion between the bottle body and the handle member, and to prevent the handle member from coming off.

Further, when the contents are filled in a bottle by heating and sealed with a cap or the like, the volume of the contents is reduced and the inside of the bottle is depressurized as it is cooled. The wall surface of the handle mounting recess of the bottle body is also sucked into the bottle, but since the ring-shaped rib is formed on the wall surface, it is evenly recessed, and distortion inside the wall is unlikely to occur. If the inside of the wall surface is distorted, the position of the handle mounting portion of the handle mounting recess of the bottle body may be misaligned, or the fitting portion between the bottle body and the handle member may be loose.

[0010]

【Example】

 First, as shown in FIG. 1, on the wall surface of the handle mounting recess (120) formed in the body portion (111) of the bottle body (110), a concentric shape similar to the outer peripheral shape of the handle mounting recess is formed. A bottle body according to this example, in which a rib (121) having a multi-ring shape was formed, was produced by stretch blow molding using polyethylene terephthalate (PET).

[0012] Separately from the bottle body, a handle having fitting portions that fit perfectly with the handle mounting portion of the bottle body at the upper and lower portions is formed by injection molding using polypropylene. It was made.

Next, the contents of the bottle body manufactured as described above are heated and filled, and the bottle body is tightly sealed with a cap, and after cooling, the fitting portion of the handle mounting portion of the bottle body is fitted to the fitting portion of the handle manufactured separately. By closely fitting the above, the plastic bottle (100) with a handle of this example was manufactured. After going through the normal distribution process, the plastic bottle with a handle was shaken with the handle or opened and the contents were all discharged with the handle, but rattling occurred at the fitting part of the handle. And the handle never came off.

[0013]

[Effect of device]

 When the plastic bottle with a handle of the present invention is used, multiple ring-shaped ribs are formed to increase the strength in preparation for deformation of the bottle body due to the weight of the bottle when the wall of the handle mounting recess of the bottle body is used. Therefore, it is possible to prevent looseness in the fitting portion between the handle and the bottle and detachment of the handle from the bottle during handling of the bottle such as carrying the bottle or pouring the contents during use.

Further, when the handle member is attached to the bottle body after the contents are heated and filled, the plastic bottle with a handle of the present invention has multiple ring-shaped ribs formed on the wall surface, so that it is suitable for suction during cooling. On the other hand, the wall surface of the handle mounting recess is evenly recessed, and distortion is unlikely to occur inside the wall surface. As a result, the handle mounting position of the handle mounting recess of the bottle body is less likely to be misaligned and the bottle body It is difficult for rattling to occur in the fitting part with the handle member.

[Brief description of drawings]

FIG. 1 is a perspective view of a plastic bottle with a handle according to an embodiment of the present invention.

[Explanation of symbols]

 100 ... Plastic bottle with handle 110 ... Bottle body 111 ... Body 120 ... Handle mounting recess 121 ... Rib 200 ... Handle member

Claims (1)

[Scope of utility model registration request] 1. A plastic bottle with a handle characterized in that a multi-ring-shaped or spiral-shaped rib that is similar to the outer peripheral shape of the handle mounting recess is formed in the handle mounting recess of the plastic bottle body. .