JP3836625B2 - Plastic bottle with handle - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a handle with a plastic bottle fitted with a hand bunch separate from that in the bottle body.
[0002]
[Prior art]
In recent years, plastic bottles with grips with separate handles attached to plastic bottles such as polyester resin represented by polyethylene terephthalate, which is lighter and more impact resistant than glass, have been put to practical use. The handle mounting recess formed on the side surface of the bottle body has a grip and a grip provided with mounting arms projecting laterally from the upper and lower ends of the grip, and the end of the mounting arm is a wall in the grip mounting recess. A plastic bottle with a handle that is embedded and embedded in the market is distributed in the market.
As shown in the side view of FIG. 7, the plastic bottle with a handle has a separate handle 3 in advance and a mounting die 32, 33 at the ends of the blow molding die. The bottle body 1 is blow-molded in the blow-molding mold, and at the same time, the bottle wall 20 wraps the ends of the mounting arms 32 and 33 so as to be integrated. Has been.
[0003]
Further, projecting pieces 320 and 330 are formed outwardly at the end portions of the attachment arms 32 and 33, and the projecting pieces 320 and 330 are also embedded in the bottle wall 20 so as to prevent detachment.
[0004]
[Problems to be solved by the invention]
However, the above-described conventional plastic bottle with a handle has a protruding piece 330 at the end of the lower mounting arm 33, particularly when a resin that is not slippery is selected as the material of the handle 3, such as the same material as the bottle body 1. There is a problem that the bottle strength and the attachment strength of the handle are uneasy such that the bottle wall 20 is not sufficiently wrapped or the bottle wall 201 on the lower side of the lower attachment arm 33 becomes extremely thin and a hole is easily opened. It was.
[0005]
It is an object of the present invention to provide a novel plastic bottle with a handle that solves the above problems.
[0006]
[Means for Solving the Problems]
As a result of diligent studies to solve the above problems, the present inventors have determined that when the handle material is a resin that slides poorly with the bottle body, when the bottle body is blow-molded and simultaneously integrated with the handle, Finding that the lower protruding piece of the lower arm of the handle and the lower protruding piece causes friction, resulting in damage or overstretching, not being sufficiently wrapped, and the bottle wall being easily thinned toward the outside. In summary, the grip mounting recess formed on the side surface of the bottle body includes a grip portion and mounting arms protruding laterally from the upper and lower ends of the grip portion, and the tip of the lower mounting arm. In the plastic bottle with a handle, wherein the handle is formed by attaching the handle formed with the locking portion so that the tip of the mounting arm is embedded in the wall in the handle mounting recess, the tip of the lower mounting arm It sets the width of the locking portion in the range 10 to 18% of the maximum diameter of the bottle body, the engaging portion has an upper claw portion formed on Yokotsume portion and upwardly formed on both sides And a plastic with a handle, characterized in that an upper surface rear side of the horizontal claw portion is cut out to form an inclined surface, and a chamfered portion is formed by cutting out both rear sides of the upper claw portion . It is a bottle.
[0007]
The handle mounting recess formed on the side surface of the bottle body, and a grip portion, and a mounting arm projecting laterally from upper and lower portions of該握Ri portions were formed engagement portion to front portion of the lower mounting arm In the plastic bottle with a handle, wherein the handle is attached so that the tip of the attachment arm is embedded in the wall in the handle attachment recess, the width of the locking portion of the tip of the lower attachment arm is set to the width of the bottle body. The plastic bottle with a handle, which is set in the range of 10 to 18% of the maximum diameter, is engaged by the bottle body wall sufficiently wrapping the engaging part of the tip of the lower mounting arm from both the left and right sides. In addition to being able to stop, the width of the lower mounting arm becomes too small and the strength does not decrease, so that the strength can be maintained in a well-balanced manner and the handle can be securely attached.
[0008]
In addition, the grip mounting recess formed on the side surface of the bottle body is provided with a grip portion and a mounting arm protruding laterally from the upper and lower portions of the grip portion, and a locking portion is formed at the tip of the lower mounting arm In the plastic bottle with a handle, in which the handle is attached so that the tip of the mounting arm is embedded in the wall in the recess for attaching the handle, the width of the locking portion is set smaller than the width of the lower surface of the grip portion. handle with plastic bottles, characterized in that the the locking portion of the tip portion of Installing Ri preparative wall of the bottle body the lower arm, it is possible to lock by wrapping the left and right sides sufficiently, the gripping lower surface The width of the bottle body (that is, the outer side of the bottle) is set wide to increase the contact area with the wall of the bottle body, thereby dispersing the stress applied from the handle and preventing the deformation of the wall of the bottle body.
[0009]
Furthermore, the grip mounting recess formed on the side surface of the bottle body is provided with a grip portion and mounting arms that project laterally from the upper and lower portions of the grip portion, and are arranged on both sides of the tip locking portion of the lower mounting arm. In the plastic bottle with a handle, in which the grip formed with the claw portion is attached so that the tip portion of the attachment arm is embedded in the wall in the recess for attaching the handle, the upper surface of the lateral claw portion at the tip portion of the lower attachment arm handle with plastic bottles, characterized in that the rear side inclined surface that attachment of the handle can be performed reliably because the walls of the bottle body is locked overlaying smoothly from above the inclined surface of the lateral claw portion It is.
[0010]
The bottle main body of the present invention uses a plastic, for example, a polyester resin typified by polyethylene terephthalate, to first form a tubular material (hereinafter referred to as a preform) which is an intermediate product by injection molding, and then the preform. In the case of polyethylene terephthalate, it is set in a blow mold while heated to 90 to 120 ° C., and high pressure air is blown into the preform to obtain biaxial stretch blow molding.
[0011]
In the present invention, a polyester resin represented by polyethylene terephthalate, polypropylene, polyethylene or the like can be used for the handle.
[0012]
In particular, when employing the bottle body and the same polyester resin as the material of the bunch hand, the strength is high hardly deformed even by reducing the width of the locking portion and 10 to 18% of the maximum diameter of the bottle body, also recovered When recycled, it can be treated together with the main body, and recycled resin can be used as a handle, which is preferable.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.
[0014]
1A is a front view showing an example of a handle attached to a plastic bottle with a handle related to the present invention, FIG. 1B is a side view of FIG. 1A, and FIG. 1C is FIG. b) is a bottom view, FIG. 2 is a partially cutaway side view showing an example of a plastic bottle with a handle relating to the present invention , and FIG. 3 is a sectional view taken along line III-III in FIG.
[0015]
As shown in FIGS. 1 to 3, this plastic bottle with a handle has a grip attachment recess 2 formed on the side surface of the bottle body 1, a grip portion 31, and an attachment arm that projects laterally from the upper and lower portions of the grip portion 31. 32, 33, and a grip 3 having a locking portion 4 formed at the tip of the lower mounting arm 33 is attached so that the tip of the mounting arm 33 is embedded in the wall in the handle mounting recess 2. In the plastic bottle with a handle, the width of the locking portion 4 at the tip of the lower mounting arm 33 is set in the range of 10 to 18% of the maximum diameter D of the bottle body 1. It is a bottle.
[0016]
If the width of the locking portion 4 is less than 10% of the maximum diameter of the bottle main body 1, the width of the lower mounting arm 33 must be reduced, and there is a problem that the strength is reduced. The covering of the resin on both sides of the portion 4 is not preferable.
[0017]
The reason why the width w1 of the locking portion 4 at the tip of the lower mounting arm 33 is set within a range of 10 to 18% of the maximum diameter D of the bottle body 1 can be sufficiently wrapped from the left and right. However, it is considered as follows.
[0018]
As shown in FIG. 3, when the bottle wall 20 is wound around the handle 3 simultaneously with the blow molding, the wall of the preform 60 indicated by the broken line expands, and first, the tip of the lower mounting arm 33 of the handle 3 is expanded. It comes into contact with the front surface 40 (the surface close to the bottle central axis) of the locking portion 4, spreads on both sides, and further wraps around the back side of the locking portion 4.
[0019]
At this time, the wall of the preform 60 that is in contact with the front surface 40 of the locking portion 4 before being stretched so much is cooled in a large thickness, and tends to be difficult to extend further.
[0020]
Then, when the width w1 of the locking portion 4 shown in FIG. 1 (c) is increased, the width of the portion having a large thickness contacting the front surface 40 is also increased. It becomes difficult to extend and wrap around the rear side of the locking portion 4.
[0021]
On the other hand, if the width w1 of the locking part 4 is set in the range of 10 to 18% of the maximum diameter D of the bottle body 1, the thickness of the preform 60 wall in contact with the front surface 40 of the locking part 4 will be described. Since the portion with a large width does not have a very large width, it is considered that there is a margin in the amount of wall stretched on both sides, and it can be sufficiently wrapped from the left and right.
[0022]
FIGS. 4 (a) a front view showing another example of a mounted that bunch hand to the associated plastic bottle with a handle to the present invention, and FIG. 4 (b) is a side view of FIG. 4 (a), FIG. 4 (c) is a bottom view of FIG. 4 (b), 5 (a) is a partial perspective view of the locking portion, FIG. 5 (b) partial side view of the locking portion, the handle Tsukepu plastic 6 relating to the present invention It is a side view partly cut away showing another example of a bottle.
[0023]
Handle with plastic bottle This FIG 4 (a), (b) , (c) to the grip handle with the mounting recessed portion 2 formed on the side surface of the bottle body 1, as shown in FIG. 6 31 and該握Ri 31 The handle 2 is provided with mounting arms 32 and 33 projecting laterally from the upper and lower portions of the lower mounting arm 33. The handle 2 is formed with a locking portion 4 at the tip of the lower mounting arm 33. In a plastic bottle with a handle attached so as to be embedded in the wall 20 of the recess 2, the width W1 of the locking portion 4 is set smaller than the width W2 of the lower surface of the grip portion 31. It is a bottle.
[0024]
By setting the width W1 of the locking portion 4 to be smaller than the width W2 of the lower surface of the grip portion 31 as described above, the wall 20 of the bottle body 1 can move the locking portion 4 having a small width at the tip of the lower mounting arm 33 from the left and right. It can be locked by being sufficiently wrapped, and the width w2 of the lower surface of the grip portion 31 is set to be wide, and the contact area with the wall 20 of the bottle body 1 is widened to disperse the stress applied from the handle 3, so that the wall 20 It is possible to prevent deformation.
[0025]
In the present invention , the locking portion 4 is formed with a horizontal claw portion 41 on both sides thereof and an upper claw portion 42 formed on the upper side, so that the bottle wall 20 wraps around the horizontal claw portion 41 and the upper claw portion 42. Can be locked.
[0026]
Earnest plastic bottles bunch of the present invention, by cutting the top rear of the Yokotsume portion 41 formed on both sides of the engaging portion 4 of the front portion of the lower mounting arm 33 of the handle 3 as shown in FIG. 4 (a) The inclined surface 5 is formed.
[0027]
Thus, as shown in FIG. 5B, when the bottle wall 20 is wound around the handle 3 simultaneously with the blow molding, the distance d from the mold M when the rear surface of the both side claw portions 41 is not inclined. _Since the distance d in the case of an inclined surface as compared with _{0 is} wider than d ₀ <d, the softening resin of the bottle wall 20 can easily enter between the horizontal claw 41 and the mold M from above. Since the softened resin can surely hold the side claw 41, the grip 2 can be attached more reliably.
[0028]
Also in this case, the mounting of the handle 2 when the width W1 of the locking portion 4 to set smaller than the width W2 of the lower surface of the grip portion 1 is preferably made more reliable. In the plastic bottle with a handle according to the present invention, the upper claw portion 42 is provided in the locking portion 4 and the chamfered portion 50 is formed by cutting out the rear side on both sides of the upper claw portion 42, so that the softening resin of the bottle wall 20 enters. that an easy.
[0029]
Handle with plastic bottles of the present invention, to set the width of the locking portion 4 in the range 10 to 18% of the D of the maximum diameter of the bottle body 1.
[0030]
In the handle 3 of the present invention, the cross section H-shaped structure in which the inner plate 61 and the outer plate 62 are connected by the central vertical rib 63 from the grip portion 31 to the mounting arms 32 and 33 projecting laterally from the upper and lower sides of the grip portion 31. It is preferable that sufficient strength is obtained while being lightweight.
[0031]
This, in order to obtain a sufficient strength without taking H-shaped structure, when the Buatsu is becomes necessary to take a large, taking a thickness greater by shrinkage in the cooling process at the time of injection molding a bunch hand, This is because, in particular, a dent (also referred to as a sink) is likely to occur on the front end surface of the cover plate portion 4, and this sink does not easily occur and is not conspicuous if an H-shaped structure is used.
[0032]
Similarly, the upper mounting arm 32 preferably has an H-shaped cross section that is perpendicular to the length direction, which is a cross section, up to the vicinity of the tip surface.
[0033]
Further, bunch to produce the hand 3 is composed of a mobile and a fixed type, to use an injection mold (not shown) that can be divided from the part corresponding to the center of both types bunch hand 3 is normal However, the cross section perpendicular to the length direction, which is a cross section in which the grip portion 31 and the lower attachment arm 33, etc. connect the inner plate 61 and the outer plate 62 by the central vertical rib 63 has an H-shaped structure. since undercut portion serving as a resistance to opening direction of the dividing direction and the handle 3 of the injection mold does not occur, there is an advantage that the step of taking out the handle 3 by dividing the dies is facilitated.
[0034]
【The invention's effect】
The handle mounting recess formed on the side surface of the bottle body, and a grip portion, and a mounting arm projecting laterally from upper and lower portions of該握Ri portions were formed engagement portion to front portion of the lower mounting arm In the plastic bottle with a handle, wherein the handle is attached so that the tip of the attachment arm is embedded in the wall in the handle attachment recess, the width of the locking portion of the tip of the lower attachment arm is set to the width of the bottle body. The plastic bottle with a handle, which is set in a range of 10 to 18% of the maximum diameter, is locked when the wall of the bottle body sufficiently wraps the locking portion of the tip of the lower mounting arm from the left and right. In addition, the strength of the lower mounting arm can be maintained in a well-balanced manner without making the width of the lower mounting arm too small, and the handle can be securely attached.
[0035]
In addition, the grip mounting recess formed on the side surface of the bottle body is provided with a grip portion and a mounting arm protruding laterally from the upper and lower portions of the grip portion, and a locking portion is formed at the tip of the lower mounting arm In the plastic bottle with a handle, in which the handle is attached so that the tip of the mounting arm is embedded in the wall in the recess for attaching the handle, the width of the locking portion is set smaller than the width of the lower surface of the grip portion. In the plastic bottle with a handle, the wall of the bottle body can be locked by sufficiently wrapping the locking portion of the tip of the lower mounting arm from the left and right, and the width of the lower surface of the grip portion is wide. By setting and widening the contact area with the wall of the bottle main body, the stress applied from the handle can be dispersed to prevent deformation.
[0036]
Furthermore, the grip mounting recess formed on the side surface of the bottle body is provided with a grip portion and mounting arms that project laterally from the upper and lower portions of the grip portion, and are arranged on both sides of the tip locking portion of the lower mounting arm. In the plastic bottle with a handle, in which the grip formed with the claw portion is attached so that the tip portion of the attachment arm is embedded in the wall in the recess for attaching the handle, the upper surface of the lateral claw portion at the tip portion of the lower attachment arm The plastic bottle with a handle, which has an inclined surface on the back side, can be securely attached to the wall of the bottle body by covering the inclined surface of the locking projection smoothly from above and locking it. is there.
[Brief description of the drawings]
FIG. 1 (a) is a front view showing an example of a handle attached to a plastic bottle with a handle related to the present invention, FIG. 1 (b) is a side view of FIG. 1 (a), and FIG. 1 (c). FIG. 2 is a bottom view of FIG.
FIG. 2 is a partially cutaway side view showing an example of a plastic bottle with a handle related to the present invention.
3 is a cross-sectional view taken along the line III-III in FIG.
4 (a) is a front view showing an example of a handle attached to a plastic bottle with a handle related to the present invention, FIG. 4 (b) is a side view of FIG. 4 (a), and FIG. 4 (c). FIG. 5 is a bottom view of FIG.
FIG. 5A is a partial perspective view showing a state of a locking portion at the tip of the lower mounting arm, and FIG. 5B is a partial cross-sectional view of the locking portion of the lower mounting arm.
FIG. 6 is a partially cutaway side view showing another example of a plastic bottle with a handle relating to the present invention.
FIG. 7 is a side view in which a conventional plastic bottle with a handle is partially cut away.
[Explanation of symbols]
1 bottle body 2 handle mounting recess 20 bottles wall 3 handle 31 handful portion 32 upper mounting arm 33 the lower mounting arm 4 engaging portion 40 front 41 lateral claw portion 42 upper finger portion 5 sloping surface 50 chamfered portion 60 preform 61 inside plate 62 Outer plate 63 Center vertical rib

Claims (1)

A handle having a grip portion and a mounting arm projecting laterally from the upper and lower portions of the grip portion in a grip mounting recess formed on the side surface of the bottle body, and a locking portion formed at the tip of the lower mounting arm In a plastic bottle with a handle that is attached so that the tip of the mounting arm is embedded in the wall in the handle mounting recess,
The width of the locking portion at the tip of the lower mounting arm is set in the range of 10 to 18% of the maximum diameter of the bottle body, and the locking portion is formed above the horizontal claw portion formed on both sides. An upper claw portion, and an inclined surface is formed by cutting out the upper surface rear side of the horizontal claw portion, and a chamfered portion is formed by cutting out both rear sides of the upper claw portion. A plastic bottle with a handle.

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