JPH07156952A - Biaxially drawn blow molded bottle with handle - Google Patents

Abstract

PURPOSE:To improve the attaching strength of a handle, and prevent chattering and slipping off from generating during a usage by joining a handle with a fitting part, which is a separate body, in a depressed part for the attaching of the handle. CONSTITUTION:A handle 100, being a separate body, with a vertical fitting element 120 which has a vertical fitting part to be fitted in the central wall of a depressed part 240 for the attaching of the handle is joined to the depressed part 240 for the attaching of the handle, which is provided on one side wall of a bottle main body 210, and a biaxially drawn blow molded bottle 200 with a handle is formed. Also, for the handle 100 which is a separate body, a fitting part 141 which is fitted either one of or both of the upper wall and lower wall of the depressed part 240 for the attaching of the handle, may be provided. In addition, on the handle 100 which is a separate body, a positioning hole 130 in which a positioning pin 330 of body part dies 300, 400 goes through is provided. By this method, the generation of a positional slipping of the handle 100 which is a separate body due to a blowing pressure, etc., at the time of forming is prevented from happening. Also, since a reinforcing rib or depressed part is provided on the depressed part for the attaching of the handle or in the vicinity on the bottle main body, the generation of chattering or slipping off the handle due to a deformation of the bottle at the time of usage is extremely small.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to fruit juice drinks, liquid detergents,
The present invention relates to a biaxially stretch blow-molded bottle with a handle used for liquid contents such as a developer.

[0002]

2. Description of the Related Art Recently, as the scope of application of plastic bottles has expanded as a container for liquid contents, the content volume has increased and the demand for bottles with a handle of 1 liter or more has increased. Conventionally, the blow molding method has been a method of attaching a handle to a plastic bottle, in which a part of the body of the bottle is formed into a recess at the time of molding the bottle to form a handle, and a parison inside the handle (molded into a molten tube). (Material) is crushed and molded, and the inside of this crushed handle is cut off to form a handle, or the actual open flat 1-13783
As disclosed in Japanese Laid-Open Patent Publication No. 1 and the like, a method of forming a fitting convex portion on a body portion of a bottle body and fitting and locking a separate handle to the convex portion, and further, JP-A-2-191156. As disclosed in Japanese Unexamined Patent Application Publication No. 2003-242, etc., a handle mounting recess is formed in the upper side wall of the bottle body, and a separate handle with a concave and convex cross section is fitted in the deepest part of the upper and lower surfaces of the handle mounting recess. It was to mold a plastic bottle with a handle.

[0003]

However, a bottle in which a part of the bottle body is formed as a concave portion and has a handle shape has a problem that it is difficult to hold when used and the surface is slippery. A bottle with a handle that is formed by crushing the inside of the handle and cutting it out is a bottle with a stretch-plow molding method that uses polyethylene terephthalate as a material. It was not possible to apply it because the fusion of the outer edge of the cut-out portion was insufficiently fused. Also, the actual Kaihei 1
In the method disclosed in Japanese Patent Publication No. 1378331 or the like, in which the fitting protrusion is formed on the bottle body to fit and lock the handle, it is difficult to form the fitting protrusion of the bottle body firmly. There was a danger that the handle would come off during use. Also,
A biaxially stretched blow-molded bottle with a handle is formed by fitting a separate handle with a concave-convex cross section at the innermost portions of the upper and lower surfaces of the recess for attaching the handle disclosed in Japanese Patent Laid-Open No. 2-191156. According to the method, there is a risk that the center of the handle mounting recess will be thinned and the upper and lower surfaces of the handle mounting recess will tend to be thin and the engagement with a separate handle will be deformed and weakened during use. The present invention solves the above-mentioned problems of conventional bottles with a handle, has a good fit state to the bottle body of the handle, is strong, and has no risk of rattling or detachment of the handle during use. A biaxially stretched blow molded bottle is provided.

[0004]

According to the first aspect of the present invention, as shown in FIG. 5, a handle mounting recessed portion (240) provided on one side wall of a bottle body (210) has a handle mounting recessed portion. A biaxial stretch blow-molded bottle with a handle, characterized in that a separate handle (100) having vertical fittings (120) having upper and lower fitting parts that fit with the central wall of the part (240) is joined. (200). In addition, the separate handle (10
0) may be provided with a fitting portion (141) that fits into either one or both of the upper wall and the lower wall of the handle mounting recess (240).

A second aspect of the present invention is a biaxially stretched blow-molded bottle with a handle in which a separate handle is joined to a handle mounting concave portion provided on one side wall of the bottle body, as shown in FIG. The biaxially stretched blow-molded bottle with a handle according to the first aspect of the present invention, which has a positioning hole (130) through which a positioning pin of a mold is inserted in a handle portion (130) of a separate body.

The third aspect of the present invention is a biaxially stretched blow-molded bottle with a handle in which a separate handle is joined to a handle mounting concave portion provided on one side wall of the bottle body, as shown in FIGS. As shown in b), a reinforcing rib (753) is provided on the bottle peripheral wall (720) from the lower part of the central wall (741) of the handle mounting recess (740) to the upper part of the lower wall (743). It is a biaxially stretch blow molded bottle (700) with a handle.

The fourth aspect of the present invention relates to a biaxially stretched blow-molded bottle with a handle in which a handle is attached to a handle mounting concave portion provided on one side wall of the bottle body, as shown in FIGS. As shown in b), a reinforcing rib (755) is provided on the bottle peripheral wall (720) from the upper part of the central wall (741) to the lower part of the upper wall (742) of the handle mounting recess (740). It is a biaxially stretched blow molded bottle with a handle.

A fifth aspect of the present invention relates to a biaxially stretched blow-molded bottle with a handle in which a handle is attached to a recess for attaching a handle provided on one side wall of the bottle body, as shown in FIGS. As shown in b), a reinforcing rib (751) extending over approximately half the circumference is formed on the lower part of the handle mounting recess (740) and the horizontal bottle peripheral wall (720), and the recess rib and the handle mounting recess are formed. Reinforcing ribs (75
A biaxially stretched blow-molded bottle (700) with a handle, which is provided with 2).

A sixth aspect of the present invention is a biaxially stretched blow-molded bottle with a handle in which a separate handle is joined to a handle mounting concave portion provided on one side wall of the bottle body, as shown in FIGS. As shown in b), the biaxially stretched blow-molded bottle with a handle is characterized in that a reinforcing recess (754) is provided on the bottle peripheral wall (720) above the handle mounting recess (740).

As shown in FIG. 3, the mold used for the above-mentioned biaxial stretch blow molding is usually divided into two, a body mold (300, 400) and a neck mold (500). It is composed of a bottom die (600), and the heated preform (20) is hung on the neck die and clamped. This preform is longitudinally stretched in a stretching lot in a clamped biaxial stretch blow molding die, and then air is blown into the preform to mold it into a bottle. A separate handle mounted in the mold (300) is insert-molded and joined. The molding material used for the biaxially stretch blow molding is polyethylene terephthalate, acrylonitrile resin, polypropylene, polyvinyl chloride or the like.

Since the separate handle is insert-molded, as shown in FIGS. 2B and 4, the handle mounting recess 320 of the body die 300 is shown in FIG. 2A. Then, the positioning hole (130) of the handle is attached to the positioning pin (3) of the mold.
30) and is fitted into the misalignment preventing recess (321) to be mounted. Then, depending on the shape of the handle, the vaccum hole (380) may be formed in the handle mounting recess (32
It may be provided at an appropriate position (0) to suck a separate grip to prevent the grip from being displaced during molding.

The reinforcing rib provided on the center wall of the handle mounting recess may be either a convex rib or a concave rib, if necessary.

The material of the separate handle is preferably a resin of the same system as the material of the bottle body in consideration of the heat-sealing property with the bottle body and the separation and collection after use, but other materials are used. May be.

[0014]

The central wall of the handle mounting recess of the bottle body has a smaller blow ratio of the preform than the upper wall and the lower wall of the handle mounting recess, so that the moldability is good. In the biaxially stretch blow-molded bottle with a handle of the present invention, since the vertical fittings having fitting portions on the upper and lower sides of the separate handle are substantially parallel to the preform and closer to each other, the above-mentioned molding is performed. The bottle is firmly fitted and fixed to the central wall of the recessed portion for attaching the handle of the bottle body, which has good properties. Furthermore, since the separate handle also has a fitting portion with the upper wall of the recess for mounting the handle, the adhesion of the separate handle to the peripheral wall of the bottle body is very good, and as a result, the bottle is During use, the handle does not easily detach from the bottle or rattle.

In order to mold the biaxially stretch blow-molded bottle with a handle according to the present invention, when a separate handle is mounted in the body mold, a metal is attached to the handle of the separate handle according to the present invention. Since it has a positioning hole through which the mold positioning pin fits, it can be mounted at the correct position in the handle mounting recess of the mold, and the separate handle is displaced due to blow pressure during molding. Can be prevented.

The biaxially stretched bottle with a handle of the present invention is
Reinforcing ribs are provided around the handle mounting recess of the bottle body that is easily deformed during use, and the bottle body is less likely to deform, causing rattling of the handle during use due to deformation of the bottle body. The attachment and detachment of the handle is extremely reduced.

[0017]

【Example】

<Example 1> First, in order to manufacture a separate handle according to this example, the upper and lower fitting portions (121, 121) shown in FIG. (1) for attaching a grip (110) having vertical fittings (120, 120) on the left and right, a grip (110) having a positioning hole (130) through which a positioning pin of a mold fits, and a grip of a bottle body. A fitting projection (14) that fits on the upper wall of the recess
0) and a separate handle (100) were produced using polyethylene terephthalate with an injection molding machine. In addition, as for the position of the fitting, even in the central portion of the mounting portion (111), as shown in FIGS. 8 and 9, the mounting portion (111) is
Above or below. Also, the fitting part (12
1) has an arc shape, and as shown in FIG. 5, the peripheral wall (243) of the bottle has a structure in which it easily winds.
The width is usually 5 to 15 mm, preferably 6 to 10 mm.

Next, as shown in FIG. 2 (a), the protruding positioning provided on the upper central portion of the cavity (310) of the back side body mold (300) of the biaxial stretch blow molding mold. The pin (330) and the displacement prevention recess (321, FIG.
2) and the handle mounting recess (320), the prepared separate handle (100) was mounted as shown in FIG. 2 (b).
A vacuum hole (380) as shown in FIG. 4 was further provided in the grip mounting recess so that the grip was sucked so that the grip would not be displaced by a preform that expands during molding. Further, the back surface of the mounting portion (111) was supported by the tip of the positioning pin (130) to prevent deformation due to blow pressure during molding.

Next, as shown in FIG. 3, a preform heated to the stretching temperature is hung on the neck die and clamped,
The preform was stretched in the stretching direction in the longitudinal direction, and as shown in FIG. 5, the bottle body (210) was blow-molded to prepare a biaxial stretch blow-molded bottle (200) with a handle. In addition, in forming the biaxially stretched blow-molded bottle with a handle of this example, the continuous moldability was very good. As for the positional relationship between the preform and the separate handle, as shown in FIG. 4, the preform (20) and the separate handle (10
The distance of the mounting part (111) of (0) is 0 to 10 mm, preferably about 1 to 3 mm. This is because if the distance between the preform and the separate handle is too large, the preform will
Stretched with a stretch rod, blown with air and expanded,
This is because the preform may be cooled by the time it is wound around the fitting element and may not be sufficiently wound around the fitting portion of the separate handle.

In order to evaluate the produced biaxially stretched blow-molded bottle with a handle, hot water was filled at a filling temperature of 40 ° C., the spout was sealed with a cap, and after cooling, a normal distribution process was performed. As shown in FIG. 6, the bottle handle (10
Insert the index finger (910), middle finger (920), ring finger (930), and little finger (940) of the right hand into 0), grasp the handle with the thumb, shake the bottle with a bottle, and open the contents ( 800) was discharged, but the handle was firmly fitted to the peripheral wall (220) of the handle mounting recess (240) of the bottle body by the fitting element (120) and the fitting portion (141), There was no rattling on the handle, nor did the handle become detached.

It should be noted that a separate handle may be provided with a fitting portion for fitting with the lower wall of the handle mounting recess, and a bottle using this handle has less wobbling when used. In particular, as shown in FIGS. 9A and 9B, it is effective when the fitting element (120) is provided only on the upper portion of the attachment portion (111). Further, the fitting protrusion (140) fitted to the upper wall of the handle mounting recess of the bottle body may be located as shown in FIGS. 8 (a) and 8 (b).

Example 2 FIG. 7 is a side view (a) and a rear view (b) in which a part of the biaxially stretched bottle with a handle of this example is cut away. A handle having a fitting element (120) fitted to the central wall (741) is joined to the handle attachment concave portion (740) provided on the upper side surface of the bottle body (710). Then, the reinforcing ribs (75) protruding outward are extended from the lower part of the central wall (741) to the upper part of the lower wall (743) on both sides of the grip of the grip mounting concave portion (740).
3) is provided. This reinforcing rib has a handle part (110) when used, and a biaxially stretched bottle (700) with a handle.
When the contents are poured out at an angle to prevent the lower part of the handle attaching recessed portion from being lifted and deformed due to the weight of the contents, by providing a reinforcing rib (753), The deformation of the lower part of the handle mounting recess can be prevented, and the wobbling of the handle can be avoided. The reinforcing rib may be a concave rib.

Further, the reinforcing ribs are provided on the central walls (741) on both sides of the grip (100) of the grip mounting recess (740).
It may be provided from the upper part to the lower part of the upper wall (472). Providing a reinforcing rib (755) at this portion can further prevent deformation of the upper part of the handle mounting concave portion, and strengthen the connection of the handle to the bottle body.

A concave reinforcing rib (751) is formed on a surface of the bottle main body (710) opposite to the handle mounting recess (740) and extends substantially horizontally around the lower end of the handle mounting recess (750). A concave reinforcing rib (752) is provided between the concave reinforcing rib and the handle mounting concave portion (740). This is because if a rib in the circumferential direction is provided over the entire circumference, the buckling strength will be weakened and force will be applied to the front part of the rib when pouring the contents with the handle, and there is a danger of bending from this part. .
In this embodiment, since the concave reinforcing rib (751) is a half circumference of the bottle peripheral wall, the buckling strength is strong, there is no fear of bending, and the concave reinforcing rib (752) is provided. The vacuum deformation on the side surface is reduced, and the entire surface is stretched uniformly. As a result, heat resistance, internal stress resistance, and external force resistance are enhanced.

A reinforcing recess (754) is provided above the handle mounting recess (740) of the bottle body (710). This reinforcement recess is provided for reinforcement so that it will not be deformed, since it is often pressed by the thumb when pouring the contents with the handle, and the wall thickness of this part should be increased. Deformation can be prevented more by doing so.

Similar to Example 1, in order to evaluate the biaxially stretch blow molded bottle with a handle of this Example, hot water was filled at a filling temperature of 40 ° C., the spout was sealed with a cap, and after cooling. After going through the normal distribution process, I tried grasping the bottle handle with the right hand and shaking the bottle, opening the bottle, and discharging the contents, but the handle is a recess for attaching the handle of the bottle body. Securely fit on the peripheral wall of the
Further, since the bottle main body is provided with the reinforcing concave portion and the reinforcing rib, the handle is not rattled and the handle is not detached.

In forming the reinforcing rib of the bottle body, as shown in FIGS. 10 (a) and 10 (b), a separate handle (1
When the bottle body is formed by the biaxial stretch blow molding and the handle (100) is joined to the mounting portion (111) of 00),
A protrusion (150) capable of forming a reinforcing rib may be provided from the lower part of the central wall of the recessed part for attaching the handle of the biaxially stretch blow molded bottle to the upper part of the lower wall. By providing this convex portion (150), this reinforcing rib allows the contents of the biaxially stretched blow-molded bottle with a handle to be slanted when the contents are poured out while holding the handle part (110) during use. It is possible to prevent the lower portion of the handle mounting recessed portion from being lifted and deformed due to the weight. In addition, as shown in FIGS. 11A and 11B, the convex portion (150) is
Even the concave portion (160) has the same function and effect.

Further, as shown in FIGS. 10 (a) and 10 (b), the bottle body is formed on the mounting portion (111) of the separate handle (100) by the biaxial stretch blow molding to form the handle (100).
When the two are joined, even if a convex portion (151) or a concave portion (161) capable of forming a reinforcing rib is provided from the central wall upper portion to the upper wall lower portion of the handle mounting concave portion of the biaxially stretched blow molded bottle, Good. By providing the convex portion or the concave portion in this portion, it is possible to further prevent the deformation of the upper portion of the grip attachment concave portion, and to strengthen the bonding of the grip to the bottle body.

[0029]

When the biaxially stretch blow-molded bottle with a handle of the present invention is used, a separate handle is firmly fitted to the peripheral wall of the handle mounting concave portion of the bottle body by the fitting member and the fitting portion. As a result, there is little risk of rattling of the handle or detachment during use.

Further, in the biaxially stretch blow-molded bottle with a handle of the present invention, when a separate handle is mounted in the body die for insert molding, a positioning pin of the die is fitted into the handle of the handle. Since it has a positioning hole to pass through, it can be firmly mounted at the correct position in the grip mounting recess of the mold.
Further, it is possible to prevent the handle from being displaced from being displaced due to the expanding preform or the blow pressure at the time of molding the bottle body.

Further, since the biaxially stretched bottle with a handle of the present invention is provided with a reinforcing rib or a reinforcing recess in the handle mounting recess of the bottle body which is easily deformed during use or in the vicinity thereof, the bottle body. The rattling of the handle and the detachment of the handle due to deformation of the handle are extremely small.

[Brief description of drawings]

FIG. 1A is a cross-sectional view of a handle of Example 1,
(B) is a plan view of the handle, (c) is a bottom view of the handle, and (d) is a cross-sectional view taken along the line AA 'of the handle.

2A and 2B are plan views of a biaxial stretch blow molding die on the handle mounting side in Example 1, where FIG. 2A shows a state in which the handle is not mounted in the die, and FIG. 2B shows a handle. It shows a state when the is mounted in the handle mounting recess in the mold.

FIG. 3 is a cross-sectional view showing a state in which a preform and a separate handle are mounted in the biaxially stretch blow molding die in Example 1.

4 is a cross-sectional view taken along the line B-B ′ in FIG.

FIG. 5 is a cross-sectional view showing a state in which the preform is stretch-blown in a biaxial stretch blow-molding die to mold the biaxial stretch blow-molding bottle with a handle of Example 1.

FIG. 6 is an explanatory diagram showing a state in which a right hand finger is put in the handle of the biaxially stretched blow-molded bottle with a handle of Example 1, the bottle is inclined, and the contents are about to be poured out from the bottle.

FIG. 7 (a) is a side view in which a part of the biaxially stretch blow molded bottle with a handle of Example 2 is cut away, and FIG. 7 (b) is
It is a rear view.

FIG. 8A is a cross-sectional view of a separate handle in which the position of the fitting is attached to the lower portion of the attachment portion, and FIG. 8B is a bottom view of the handle.

FIG. 9A is a cross-sectional view of a separate handle in which the position of the fitting is attached to the upper portion of the attachment portion, and FIG. 9B is a bottom view of the handle.

FIG. 10A is a cross-sectional view of a separate handle in which convex portions are provided on an upper portion and a lower portion of a mounting portion, and FIG. 10B is a bottom view of the handle.

FIG. 11A is a cross-sectional view of a separate handle in which recesses are provided in an upper portion and a lower portion of a mounting portion, and FIG. 11B is a bottom view of the handle.

[Explanation of symbols]

 10 …… Biaxial stretch blow molding die 20 …… Preform 100 …… Grip 110 …… Grip part 111 …… Mounting part 120 …… Mating element 121,141 …… Mating part 130 …… Positioning hole 140 …… Fitting protrusion 150, 151 ... Convex portion 160, 161 ... Recessed portion 200, 700 ... Biaxially stretch blow-molded bottle with handle 210, 710 ... Bottle body 220, 720 ... Peripheral wall 230, 730 ... Parting line Trace 240, 740 ... Handle mounting recess 241, 741 ... Central wall 242, 742 ... Upper wall 243, 743 ... Lower wall 300, 400 ... Body mold 310, 410 ... Cavity 320 ... Handle mounting recess 330 ... Locating pins 340, 440 ... Parting surface 350 ... Neck die fitting recess 360 ... Bottom die fitting recess 370 ... Guide pin 500 ... Neck mold 600 ... Bottom mold 751, 752, 753, 755 ... Reinforcing rib 754 ... Reinforcing recess 800 ... Contents 910 ... Index finger 920 ... Middle finger 930 ... Ring finger 940 ... pinkie

Claims (8)

[Claims] Claim: What is claimed is: 1. A separate body having a vertical fitting element provided in one side wall of a bottle main body, the vertical fitting having upper and lower fitting portions that fit with a central wall of the grip mounting depression. A biaxially stretched blow molded bottle with a handle, which is characterized by joining handles. 2. A biaxially stretch blow-molded bottle with a handle, wherein the separate handle according to claim 1 has a fitting portion that fits with an upper wall of the handle mounting recess. 3. A biaxially stretched blow-molded bottle with a handle, wherein the separate handle according to claim 1 has a fitting portion that fits with a lower wall of the handle mounting recess. 4. A biaxially stretched blow-molded bottle with a handle, wherein a handle is attached to a handle mounting recess provided on one side wall of the bottle body, and a mold is positioned on the handle of the separate handle. The biaxially stretched blow-molded bottle with a handle according to claim 1, wherein the pin has a positioning hole through which the pin fits. 5. A biaxially stretched blow-molded bottle with a handle, wherein a separate handle is joined to a handle mounting recess provided on one side wall of the bottle body. A biaxially stretch blow-molded bottle with a handle, characterized in that a reinforcing rib is provided on the peripheral wall of the bottle over the upper part of the wall. 6. A biaxially stretched blow-molded bottle with a handle, wherein a separate handle is joined to a handle mounting recess provided on one side wall of the bottle body, and the handle mounting recess is upward from a central wall upper portion. A biaxially stretched blow-molded bottle with a handle, characterized in that a reinforcing rib is provided on the peripheral wall of the bottle over the lower part of the wall. 7. A biaxially stretched blow-molded bottle with a handle, in which a separate handle is joined to a handle mounting recess provided on one side wall of the bottle body, and a bottle peripheral wall horizontal to the lower part of the handle mounting recess. A biaxially stretched blow-molded bottle with a handle, characterized in that a reinforcing rib is formed over approximately half the circumference, and a reinforcing rib is provided on the bottle peripheral wall between the reinforcing rib and the handle mounting recess. 8. A biaxially stretched blow molded bottle with a handle, wherein a separate handle is joined to a handle mounting recess provided on one side wall of the bottle body, and a bottle peripheral wall above the handle mounting recess is reinforced. A biaxially stretched blow-molded bottle with a handle, which is provided with a recess for use.