JP6037200B2 - Blow molding container - Google Patents

Description

  The present invention relates to a blow molded container provided with a grip handle on a container body.

2. Description of the Related Art Conventionally, a blow molded container having a handle for a user to grasp has been proposed as a medium-sized or larger container for storing contents such as liquid.
As this type of handle, for example, as shown in Patent Document 1, a vertically long opening is formed on the upper side of the trunk portion constituting the container body, and is formed integrally with the container body. The user can easily carry the container body by holding the handle, and can easily pour the contents in the container body by tilting the lifted container body.

JP 2001-114237 A JP 2009-813 A

  In this type of container, when direct blow molding is performed, it is necessary to form a handle by forcibly cutting off a part of the parison with a mold, so that a varistor is formed in a region where the container body and the handle face each other. Are likely to remain and form along the parting line. When the user grips such a handle with burrs, there is a risk that the burrs will touch the hands and fingers, causing pain to the user or injuring the hands.

  As a treatment for such a problem, for example, as shown in Patent Document 2, it is generally performed to remove and remove a burr portion using a dedicated deburring device or a trimming device. In addition, there is a problem that the manufacturing equipment and the manufacturing process are complicated and the manufacturing cost is increased.

  In order to solve the above-described problems in the prior art, the present invention eliminates the burrs remaining in the handle portion with a simple configuration without complicating the manufacturing equipment and the manufacturing process even when the burrs cannot be completely removed. It is an object of the present invention to create a blow molded container that can protect the user's hand and fingers and is excellent in safety and easy to hold.

Among the means for solving the above problems, the main means of the present invention is as follows.
A blow molded container comprising a container body and a handle for gripping the container body, integrally molded, and provided with a parting line formed along the mating surface of the mold on the surface of the handle and the container body,
A groove along the parting line is extended at least on the opposite side of the handle facing the container body, and the parting line is disposed in the groove, and the depth of the groove is made of gold along the parting line. It is characterized in that it is set to be equal to or greater than the average height dimension of burrs that are formed by cutting away with a mold , and the width dimension of the groove is set to 1 mm or more and 3 mm or less .

In direct blow molding, it is necessary to form a handle by forcibly cutting a part of the parison with a mold, so burrs remain along the parting line in the area where the container body and the handle face each other. However, according to the blow-molded container comprising the above means, it is possible to achieve the accommodation of the burr remaining on the facing surface on the handle side in the groove portion.
In addition, the protrusion of the burr tip remaining on the bottom surface of the groove is prevented from protruding outside the groove.
In addition, a reduction in the amount by which a part of the hand or finger holding the handle is buried in the groove is achieved.

According to another aspect of the present invention, there is provided the blow molded container according to claim 1, wherein the groove is formed with a first groove formed on a facing surface of the handle facing the back of the container body and a second groove formed on the back. And the parting line is disposed in the first groove portion and the second groove portion .

  The above means achieves accommodation of the burr formed in the groove along the parting line in the region including the back surface of the container body, the opposing surface on the handle side, and the boundary between them.

According to another aspect of the present invention, in the blow-molded container according to claim 1 or 2, a groove portion extending along the parting line is extended on the outer surface of the handle opposite to the opposite surface on the handle side. It is said that the ring line is arranged in the groove.

  With the above-mentioned means, the burr can be accommodated in the groove portion remaining formed along the parting line on the outer surface of the handle.

According to another aspect of the present invention, in the blow molded container according to any one of claims 1 to 3 , only the upper end of the handle is connected to the container body, and the lower end of the handle is separated from the container body. It is said.

  In the above means, in addition to the blow molded container in which both the upper end and the lower end of the handle are continuously connected to the container body, only the upper end of the handle is connected to the container body, and the lower end of the handle is separated from the container body. Formation of a groove portion along a parting line in a blow molded container having a free end is achieved.

Since the present invention has the above-described configuration, the following effects can be obtained.
In the main configuration of the present invention, among the burrs remaining formed in the portion where the container main body and the handle face each other, almost all of the burrs remaining formed along the parting line on the facing surface on the handle side are placed in the groove portion. Can be accommodated. For this reason, even if the user grips the handle strongly, the burr formed on the opposite side of the handle side can be prevented from touching the finger or hand. Or it will not be hurt. That is, a highly safe blow molded container can be provided.
In addition, since the depth of the groove is set to be equal to or greater than the average height of the burrs remaining along the parting line, the tip of the burrs will not protrude beyond the upper edge of the groove. It is possible to prevent the burr tip from touching the hand or finger.
Furthermore, since the width of the groove is set to 1 mm or more and 3 mm or less, it is possible to suppress the amount of part of the hand or finger embedded in the groove even if the handle is strongly gripped. Hands and fingers can be effectively protected from the formed burrs.

In addition, the groove portion according to claim 2 includes a first groove portion formed on a facing surface of the handle facing the back surface of the container body and a second groove portion formed on the back surface, and the parting line is the first. In the structure arranged in the groove part and the second groove part , not only the burr remaining on the back surface on the container body side and the opposing surface on the handle side, but also the upper and lower ends of the insertion holes that are the boundary between them. The burrs remaining on the surface can also be accommodated in the groove. For this reason, when a user tries to hold a handle by inserting a hand or a finger into the insertion hole, the hand or the finger can be prevented from touching the burr.

Further, in the structure according to claim 3, in the configuration in which the groove portion extending along the parting line is extended to the outer surface opposite to the opposing surface on the handle side, and the parting line is disposed in the groove portion, Even if it may be formed along the parting line on the outer surface of the handle, the burr at this portion can be accommodated in the groove. For this reason, there is no possibility that the user or the finger (particularly the thumb) holding the handle touches the burr on the outer surface of the handle.

According to claim 4 also only the upper end of the handle is connected to the container body, in the configuration in which the lower end of the handle is separated from the container body, when opening the two split mold in the manufacturing process of the container body, the handle Since the lower end (free end) of the handle can be easily bent and deformed even if it is caught by the mold, it is possible to release the catch and reliably release the mold.

It is a front view which shows the container main body as 1st Example of the blow molding container of this invention. It is a side view of the container main body of FIG. It is a rear view of the container main body of FIG. It is sectional drawing in the IV-IV line of FIG. It is a side view which shows the container main body as 2nd Example of the blow molding container of this invention. It is a rear view of the container main body of FIG.

Embodiments of the present invention will be described below with reference to the drawings.
1 is a front view showing a container main body as a first embodiment of a blow molded container of the present invention, FIG. 2 is a side view of the container main body of FIG. 1, FIG. 3 is a rear view of the container main body of FIG. It is sectional drawing in the IV-IV line of FIG.

A container body 1 shown as a first embodiment of a blow molded container in FIGS. 1 to 4 is used as a container filled with a liquid content such as a liquid detergent or a softener.
The container body 1 has a mouth tube part 2, a body part 3 and a bottom part 4 from the upper end to the lower end, and has a handle 6 formed integrally on the back surface 3C of the body part 3, for example, a synthetic resin such as polyethylene or polypropylene. It is formed by a known direct blow molding method using a material.

  A screw groove is formed around the mouth tube portion 2, and a well-known cap with a measuring cup (not shown), for example, is attached. The body 3 includes, for example, a front surface 3A in which an intermediate portion in the height direction protrudes in the form of a drum, a side surface 3B and 3B constituting both walls in the width direction, a back surface 3C including a handle 6, and a lower portion of the handle 6 And a lower back portion 3D provided on the back side.

  The handle 6 provided on the back surface 3C is to be gripped by the user when the container body 1 is lifted or tilted to pour the liquid content in the container body 1. The upper end 6a of the handle 6 is continuously provided from the upper end on the back surface 3C side of the trunk portion 3 (the lower end of the mouth tube portion 2) and extends downward, and the lower end 6b is on the back surface 3C side of the trunk portion 3 and about the height direction. It is connected to the position of 1/3.

  An insertion hole 5 for inserting a hand or a finger is formed in a region between the back surface 3 </ b> C of the trunk portion 3 and the handle 6 so as to penetrate in the horizontal direction. The insertion hole 5 is formed by forcibly cutting off the parison by a part of the mold when blow molding is performed by sandwiching the parison between the two molds. The insertion hole 5 is formed, for example, to have a height sufficient to insert four fingers arranged vertically and a substantially elliptical shape that can be grasped with one hand. The handle 6 is formed with a diameter that can be held with one hand.

  As shown in FIGS. 1 and 3, the parting line PL is formed at the center of the container body 1 and the handle 6 in the width direction and becomes a mating surface of a mold (not shown) when the container body 1 is blow-molded. Is done. The burrs 9 remain formed along the parting line PL. In particular, the burrs 9 are relatively rough and large burrs in the region where the back surface 3C of the body portion 3 where the insertion holes 5 are cut and formed and the handle 6 face each other. 9 is likely to remain.

  As shown in FIG. 4, the handle 6 includes a facing surface 6A that faces the back surface 3C of the container body 1 and an outer surface 6B that is a surface opposite to the facing surface 6A. In the example shown in FIG. 4, the facing surface 6 </ b> A is formed as a convex curved surface that protrudes toward the back surface 3 </ b> C of the container body 1.

  A first groove portion 8a made of a concave groove extends from the upper end 6a to the lower end 6b at the center in the width direction of the facing surface 6A of the handle 6, and the parting line PL is disposed at the center of the first groove portion 8a. ing. The burrs 9 are formed on the bottom surfaces of the groove portions 8 along the parting lines PL.

  The depth dimension of the first groove 8a is preferably equal to or greater than the average height dimension of burrs remaining on the parting line PL. By setting within this range, the burr tip does not protrude outward from the upper edge of the first groove 8a, and the burr does not touch the user's hand or finger.

  If the width dimension W of the first groove 8a is smaller than 1 mm, the remaining burrs may not be accommodated. If the width dimension W is larger than 3 mm, the hand or part of the finger holding the handle 6 may not be accommodated. There is a risk of being buried in the one groove 8a and touching the tip of the burr. Therefore, the width dimension W of the 1st groove part 8a has the preferable range of 1 mm or more and 3 mm or less.

  By setting to this range, the amount of part of the hand or finger buried in the first groove 8a can be suppressed. Therefore, even if the handle 6 is gripped, the sharp tip of the burr 9 remaining in the first groove 8a does not touch the gripped hand or finger, so that the handle 6 can be gripped without difficulty. Become. Therefore, it is possible to provide a blow molded container that is easy to hold and excellent in safety.

In the first embodiment, a second groove portion 8b having the same configuration as the first groove portion 8a extends from the upper end to the lower end of the handle 6 on the insertion hole 5 side at the center in the width direction of the back surface 3C on the container body 1 side. The parting line PL is arranged at the center of the second groove 8b.
More specifically, the first groove portion 8a on the handle 6 side and the second groove portion 8b on the container body 1 side are connected at the upper and lower positions of the insertion hole 5, and the back surface 3C on the container body 1 side and the facing surface of the handle 6 A ring-shaped groove 8 is disposed in a portion facing 6A. The parting line PL is annularly arranged through the center in the width direction in the ring-shaped groove 8.

  For this reason, even if the finger inserted into the insertion hole 5 touches one or both of the opposing surface 6A on the handle 6 side and the back surface 3C on the container body 1 side, the finger is left and formed along the annular parting line PL and It is possible to make it difficult to touch the tip of the burr 9 housed in the first groove 8a or the second groove 8b. Therefore, it is possible to safely insert and remove the finger with respect to the insertion hole 5, and the handle 6 can be gripped without difficulty. That is, it is possible to provide a blow molded container that is easy to hold and excellent in safety.

  Further, in the first embodiment, as shown in FIG. 3, the third groove portion 8c passes through the outer surface 6B of the handle 6 from the position of the lower end of the mouth tube portion 2 at the center in the width direction of the outer surface 6B of the handle 6. It extends to the lower end of the lower part 3D, and the parting line PL is arranged at the center in the width direction of the third groove 8c.

The groove 8 should be formed at least in a range where burrs are likely to occur when blow-molded by being sandwiched between molds (for example, a second embodiment described later (FIG. 6)) may not be formed.
In order to protect the hand and fingers from burrs, the hand holding the handle 6 normally holds the range from the upper end 6a to the lower end 6b. Therefore, at least the range where the third groove 8c is formed is at least the handle 6. It can also be set as the structure formed in the range of the upper end 6a to the lower end 6b.

  When gripping the handle 6 by hand, the palm of the palm or thumb is in contact with the outer surface 6B of the handle 6. However, by forming the third groove portion 8c on the outer surface 6B of the handle 6 as described above, the tip of the burr 9 remaining formed along the parting line PL and accommodated in the third groove portion 8c is formed. It can make it hard to touch the palm of your hand or thumb. For this reason, the handle 6 can be gripped without difficulty. That is, it is possible to provide a blow molded container that is easy to hold and excellent in safety.

FIG. 5 is a side view showing a container main body as a second embodiment of the blow molded container of the present invention, and FIG. 6 is a rear view of the container main body of FIG.
The container main body shown in the second embodiment is different from the first embodiment in the shape of the handle, and the other configurations and effects are the same as those in the first embodiment. Therefore, in the following, differences from the first embodiment will be mainly described. The same members will be described with the same reference numerals.

  As shown in FIGS. 5 and 6, in the container body 1 shown in the second embodiment, only the upper end 6a of the handle 6 is connected to the upper end of the container body 1 (the lower end of the mouth tube portion 2). The lower end 6b is not connected, that is, formed as a free end separated from the container body 1.

  Although not shown in FIGS. 5 and 6, the first groove 8a is formed on the facing surface 6A of the handle 6 as in the first embodiment. Or it is formed on 6 A of opposing surfaces of the handle 6, and the back surface 3C of the container main body 1 in the state which the upper end of the 1st groove part 8a and the upper end of the 2nd groove part 8b continue. In FIG. 6, a part of the second groove 8b formed on the back surface 3C of the container body 1 appears.

  The third groove portion 8c extends from the position of the lower end of the mouth tube portion 2 through the outer surface 6B of the handle 6 to the lower end 6b of the handle 6 at the center in the width direction of the outer surface 6B of the handle 6, and further the lower end 6b of the handle 6 It passes through the first groove 8a formed on the facing surface 6A of the handle 6. On the outer surface 6B of the handle 6, the parting line PL is disposed at the center in the width direction of the third groove 8c.

  Therefore, also in the container main body 1 shown in the second embodiment, as in the first embodiment, the tip of the burr 9 remaining formed along the parting line PL and accommodated in each groove 8 is a palm or finger. Since the handle 6 can be made difficult to touch, the handle 6 can be gripped without difficulty.

  In the manufacturing process of the container body 1 shown in the first embodiment, since the handle 6 is closed, when the two split molds are opened and released, a part of the mold is handled by the handle of the container body 1. 6 may be difficult to remove due to being caught in the insertion hole 5, but in the configuration in which the lower end 6b of the handle 6 is separated from the container body 1 as a free end as in the second embodiment, a part of the mold Even if the handle 6 is caught by the handle 6, the handle 6 itself can be easily bent and deformed, so that the catch is released and the mold 6 can be reliably taken out.

  As mentioned above, although the structure of this invention and its effect were demonstrated along the Example, embodiment of this invention is not limited to the said Example.

In the first embodiment and the second embodiment, the configuration including all of the first groove portion 8a, the second groove portion 8b, and the third groove portion 8c as the groove portion 8 has been described, but the present invention is limited to the above-described embodiment. It may not be a thing and the structure which has the 1st groove part 8a at least may be sufficient.
In addition to the first groove portion 8a, the second groove portion 8b and the third groove portion 8c are provided, so that the object of the present invention can be achieved more effectively.

In the first and second embodiments, the cross-sectional shape of the groove 8 (the first groove 8a, the second groove 8b, and the third groove 8c) is changed from the front surface 6A, the back surface 3C, and the outer surface 6B to the container body. Although the configuration of only the concave groove recessed inward of 1 or the handle 6 has been shown and described, the present invention is not limited to this, and a configuration in which a pair of convex portions are provided on both sides of the central concave groove is also possible. Good. This configuration is effective in that the depth between the top of the convex portion and the bottom surface of the concave groove is a substantial depth dimension of the groove portion 8, and burr protrusion from the groove portion 8 can be reliably prevented.
In this configuration, the parting line PL is the same as described above in that the parting line PL extends along the center of the groove and the burr is formed on the bottom surface of the groove along the parting line PL. .

  The blow molded container of the present invention can be used in a wider area in the field of containers in which a handle is formed integrally with a container body using a direct blow molding method.

1; Container body 2; Mouth tube portion 3; Body portion 3A; Body portion front surface 3B; Body portion side surface 3C; Body portion rear surface 3D; Body portion rear lower portion 4; Bottom portion 5; Insert hole 6; Handle facing surface 6B; Handle outer surface 6a; Handle upper end 6b; Handle lower end 8; Groove 8a; First groove (groove)
8b; 2nd groove part (groove part)
8c; Third groove (groove)
9; Burr PL; Parting line W; Width of groove

Claims (4)

It has a container body (1) and a handle (6) for gripping the container body (1), and is integrally molded, and on the surface of the handle (6) and the container body (1), a mating surface of the mold A blow molded container with a parting line (PL) formed along
A groove portion (8a) extending along the parting line (PL) is extended at least on the opposing surface (6A) on the handle (6) side facing the container body (1), and the parting line (PL) is the groove portion. (8a) and the average height of the burrs (9) formed by the depth dimension of the groove (8) being cut by the mold along the parting line (PL) and remaining. The blow-molded container is characterized by being set to a thickness dimension or more and a width dimension (W) of the groove (8) being set to 1 mm or more and 3 mm or less .   A groove (8) is formed in the first groove (8a) formed on the facing surface (6A) of the handle (6) facing the back surface (3C) of the container body (1) and on the back surface (3C). The blow molded container according to claim 1, further comprising a second groove portion (8b), wherein the parting line (PL) is disposed in the first groove portion (8a) and the second groove portion (8b).   Of the handle (6), a groove (8c) extending along the parting line (PL) is extended on the outer surface (6B) opposite to the handle side facing surface (6A), and the parting line (PL) The blow-molded container according to claim 1 or 2, wherein is disposed in the groove (8c). The blow molded container according to any one of claims 1 to 3 , wherein only the upper end of the handle (6) is connected to the container body (1), and the lower end of the handle (6) is separated from the container body (1). .

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