JP4096447B2 - Thin-walled blow bottle - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a thin-walled blow bottle, and more particularly to a thin-wall blow bottle having an improved mouth shape.
[0002]
[Problems to be solved by the invention]
In recent years, the reuse of plastic molding materials has been encouraged and reuse has been encouraged, and the thinning of bottles has been demanded from the fact that waste bottles are crushed and recovered. Thin walls that can be easily crushed and discarded by hand Bottles are well known.
[0003]
However, in the case of the conventional thin bottle, for example, in the case of PP, the resin weight per unit capacity was 0.065 g / ml. However, if the resin weight is 0.05 g / ml or less, the required parts of the trunk and bottom are required. The ribs can be reinforced and reinforced, but since the shoulders are thin, the mouth is not improved, and if it is not reinforced, various troubles may occur in the process of transporting blow molded bottles to each work station, There was a problem that the cap could not be securely tightened after filling.
[0004]
Also, if you try to use it as a replacement bottle that replaces the cap with pump after using the contents liquid, the conventional mouth shape cannot be grasped by hand with the neck ring, and the shoulder is thin. Therefore, there is a problem that it is difficult to open and close the cap by holding the bottle.
[0005]
In order to solve the above-mentioned problems, the present invention is designed to prevent troubles in the bottle conveying process after molding in a blow bottle having a thin wall surface so that crushing can be easily performed. It is an object of the present invention to provide a thin-walled bottle in which the shape of the bottle mouth is improved and reinforced, so that the cap can be easily tightened and opened and closed during use.
[0006]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention provides a thin-walled blow bottle comprising a mouth portion, a shoulder portion, a trunk portion, and a bottom portion as a thin-wall blow bottle, wherein the bottle mouth portion is an upper portion in which a screw is screwed on the outer periphery. It consists of a mouth tube part, a neck ring projecting below the neck ring, and a lower mouth tube part continuing from the bottom of the neck ring to the shoulder, and the neck ring has a knurled engraved on its outer peripheral surface. The mouth tube portion has a height that can be grasped by fingers under the neck ring. The thin bottle is made of PE or PP as a material resin, and the resin weight per unit capacity is 0.05 to 0.015 g. / Ml, the body is reinforced, the wall thickness is 0.3 mm or less, has a shape-retaining property as a container, and is formed by direct blow.
[0007]
Further, as another embodiment of the thin-walled blow bottle, a thin-walled blow bottle comprising a mouth portion and a shoulder portion, a trunk portion and a bottom portion, the bottle mouth portion having an upper mouth tube portion screwed on the outer periphery, It consists of a grip ring projecting below it and a lower mouth tube section that extends from the grip ring to the shoulder, and the grip ring has a knurled carving on its outer peripheral surface. The lower part of the ring has a height that can be gripped with fingers, and its outer circumference is smaller than the grip ring and larger than the upper mouth tube. The thin bottle is made of PE or PP as the material resin. The weight of the resin per unit volume is 0.05 to 0.015 g / ml, the body is reinforced, the thickness is 0.3 mm or less, and the shape has a shape retaining property. Structure characterized by being molded Adopt the composition.
[0008]
Moreover, the structure characterized by the outer periphery being a square is employ | adopted as an embodiment of a holding ring.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings.
In FIGS. 1 and 2, A is a thin blow bottle formed by direct blow, which includes a mouth part 1, a shoulder part 2, a body part 3 and a bottom part 4, and PE, PP, and other synthetic resins as material resins. Resin is used and blow molded as a single layer or a laminate.
[0010]
The mouth portion 1 is composed of an upper mouth tube portion 5, a neck ring 6 positioned at the middle portion of the mouth portion, and a lower mouth tube portion 7 continuing from the lower portion to the shoulder portion.
Screws 8 are screwed on the outer peripheral surface of the upper mouth tube portion 5, and knurls 9 are engraved on the outer peripheral surface of the neck ring 6 over the front and rear portions or the entire periphery.
The lower mouth tube portion 7 has a height that allows a finger to be put in the lower mouth tube portion 7 to grip the bottle, and continues to the shoulder portion 2.
[0011]
The mouth portion 1 is thicker than the shoulder portion 2 and the trunk portion 3, but is still thinner than the conventional one, so the neck ring 6 is formed in the middle portion of the mouth portion. In addition, by providing the knurling 9 on the outer peripheral surface, the mouth portion 1 is strengthened, the bottle is held so that the bottle does not detach when the bottle is transported, and the bottle is prevented from rotating when the cap is fastened.
Since the lower mouth tube portion 7 having a certain height is provided below the neck ring 6, a finger can be inserted into the lower mouth tube portion 7 between the neck ring 6 and the shoulder wall 2 to hold the bottle. .
Therefore, the cap can be easily opened and closed during use.
[0012]
As shown in FIG. 3, the cross-sectional shape of the shoulder 2 and the body 3 is a flat cross-section 10 in which the front and rear are elliptical and both sides are flat, and between the shoulder 2 and the body 3, A step portion 11 is formed.
Concave grooves 13 extending in the horizontal direction are arranged at equal intervals in the front and rear wall surfaces 12 of the body portion 3, and the front and rear wall surfaces 12 are waved wall surfaces waved in the vertical direction. ing.
Elliptical end portions 14 of the front and rear wall surfaces 12 extend in the vertical direction at the left and right ends of the concave groove 13.
[0013]
The left and right side wall surfaces 15 intersect with the elliptical end portions 14 of the front and rear wall surfaces 12 at a constant angle, and a plurality of recesses 16 are disposed on the surface of the side wall surface 15 at equal intervals.
A bulging peripheral wall 17 having a step between the upper portion and the upper portion is disposed at the lower end portion of the trunk portion 3, and continues to the bottom portion 4.
[0014]
The front and rear wall surfaces 12 are reinforced by concave grooves 13 extending in the lateral direction, and the intersection line between the front and rear wall surfaces 12 and the side wall surface 15 functions in the same manner as the reinforcing rib as a vertical corner, and is equally spaced on the surface of the side wall surface 15. Since the plurality of recesses 16 are provided, the barrel portion has a buckling strength.
Further, since the surface of the side wall surface 15 is a flat surface, the front and rear bottles come into surface contact in the transport process, and the major axis direction of the bottles are arranged in the moving direction.
[0015]
As shown in FIGS. 1, 2, and 4, the bottom portion 4 includes a bottom peripheral wall 18 and a bottom wall 19, and the bottom peripheral wall 18 is slightly inclined front and rear walls 20 and left and right side walls inclined at a predetermined angle. 21.
A connecting portion between the bottom peripheral wall 18 and the bulging peripheral wall 17 of the body portion 3 is provided with an upper horizontal rib 22 over the entire circumference, and a plurality of vertical ribs 23 are provided on the front and rear walls 20 at regular intervals. Is provided.
A lower lateral rib 24 is disposed at the lower end of the bottom peripheral wall 18, and a bottom wall 19 having a curved surface 25 with a central portion recessed upward is continuous below the lower lateral rib 24. ing.
[0016]
Since the bottom peripheral wall 18 is reinforced by the upper and lower horizontal ribs 22 and 24 and the vertical rib 23, the left and right side walls 21 are inclined, and the connecting portion between the bottom end of the bottom peripheral wall 18 and the bottom wall 19 is circular and thick. The bottom 4 is strengthened against the drop impact and buckling of the bottle.
[0017]
Next, the molding method will be described. The bottle of the present invention is molded by a well-known direct blow molding.
In one embodiment of the thin bottle, PP resin is used as the resin and the resin weight per unit volume is 0.027 g / ml, but the resin weight can be in the range of 0.05 to 0.015 g / ml. .
[0018]
As a thin bottle that maintains shape retention and can be easily crushed, the wall thickness of the barrel wall may be around 0.6 mm. However, to make it thinner, ribs are provided on the barrel and bottom peripheral wall. By adopting a predetermined shape, the wall thickness of the barrel and the bottom peripheral wall is set to 0.3 mm or less, and the resin weight per unit capacity is reduced.
[0019]
In the embodiment described above, the outer periphery of the neck ring is circular, and the lower part thereof is a cylindrical lower mouth tube portion. However, the outer periphery of the neck ring may be a polygon or other shapes other than circular.
[0020]
Next, a second embodiment in which the shape of the mouth portion is changed will be described.
In the first embodiment, the neck ring protrudes from the mouth tube portion. However, in the second embodiment, a grip ring is used instead of the neck ring, and the shape of the mouth portion is changed. .
[0021]
As shown in FIG. 5, the bottle Aa is composed of a mouth 1a, a shoulder 2a, a trunk 3a, and a bottom 4a as in the first embodiment, but the configuration of the shoulder, trunk, and bottom is as follows. Since it is the same as that of the above-mentioned embodiment, explanation is omitted and only a mouth part of a bottle is explained below.
[0022]
The mouth portion 1a is composed of an upper mouth tube portion 30 and a grip ring 31 positioned at an intermediate portion between the mouth portion 1a and a lower mouth tube portion 32 extending from the grip ring 31 to a shoulder portion.
A screw 33 and a holding ring 34 are provided on the outer peripheral surface of the upper mouth tube portion 30, and the outer peripheral surface of the grip ring 31 protrudes from the upper mouth tube portion 30 and the lower mouth tube portion 32 of the mouth portion 1a. A knurl 35 is engraved over a part or the entire circumference of the outer peripheral surface.
The lower mouth tube portion 32 has a certain height that can be gripped with fingers, and its outer periphery is slightly smaller in diameter than the grip ring 31 but is larger in diameter than the upper mouth tube portion 30 and continues to the shoulder portion 2a. ing.
[0023]
In the second embodiment, the grip ring 31 is formed in the middle portion of the mouth portion 1a, and the knurl 34 is provided on the outer peripheral surface thereof, so that the bottle does not move when the bottle is transported, as in the first embodiment. In addition, the bottle does not rotate when the cap is fastened.
In addition, since the lower mouth tube portion 32 having a small diameter and a certain height is provided below the grasp ring 31, the bottle can be grasped by holding the grasp ring 31 and the lower mouth tube portion 32 by hand. The cap can be easily opened and closed during use.
[0024]
In the above embodiment, the outer peripheral shape of the grip ring 31 is circular, but the outer periphery of the grip ring 31a may be a regular octagon or a regular hexagon as shown in FIG.
At this time, the outer diameter of the lower mouth tube portion 32a can be reduced, or the outer periphery of the lower mouth tube portion 32a can be formed into a square shape that is similarly reduced from the outer periphery of the grip ring 31a.
[0025]
In each said embodiment, although a blow bottle is a flat bottle which used the front and back wall surface as the ellipse, the trunk | drum wall cross section may be circular, a quadrangle, and another polygon.
[0026]
【The invention's effect】
Since this invention is comprised as mentioned above, there exists the following effect.
A neck ring or grip ring is formed in the middle of the mouth and knurls are provided on its outer peripheral surface, so that the bottle will not move when the bottle is transported and the bottle will not rotate when the cap is tightened. I was able to.
[0027]
Further, since the lower mouth tube portion having a constant height is provided below the neck ring or the grip ring, it becomes easy to grip the bottle by hand, and the cap can be easily opened and closed during use.
Therefore, the bottle of the present invention can be used as a refill bottle or a replacement bottle for replacing a cap with a pump.
[Brief description of the drawings]
FIG. 1 is a front view of a blow bottle according to a first embodiment of the present invention.
FIG. 2 is a side view of the bottle.
FIG. 3 is a top view of the bottle.
FIG. 4 is a bottom view of the bottle.
FIG. 5 is a front view of a bottle according to a second embodiment.
6A and 6B are explanatory views of a bottle mouth portion for explaining an embodiment of the grip ring, wherein FIG. 6A is a front view of the mouth portion, and FIG. 6B is an outer cross-sectional view taken along line AA of FIG.
[Explanation of symbols]
A, Aa Blow bottle 1, 1a Mouth part 2, 2a Shoulder part 3, 3a Body part 4, 4a Bottom part 5, 30 Upper mouth cylinder part 6, 6a Neck ring 7, 32 Lower mouth cylinder part 8, 33 Screw 9, 34 Knurl 12 Front and rear wall surface 13 Groove 15 Side wall surface 16 Recess 18 Bottom peripheral wall 19 Bottom wall 31, 31a Grasping ring

Claims (3)

A thin-walled blow bottle consisting of a mouth and a shoulder, a trunk and a bottom,
The bottle mouth portion is composed of an upper mouth tube portion screwed on the outer periphery, a neck ring projecting below the lower mouth tube portion, and a lower mouth tube portion continuing from the bottom of the neck ring to the shoulder portion,
The neck ring is knurled on its outer peripheral surface,
The lower mouth tube portion has a height sufficient to hold the lower part of the neck ring with fingers,
Thin-walled bottles are made of PE or PP as the material resin, the weight of the resin per unit volume is 0.05 to 0.015 g / ml, the body is reinforced, the wall thickness is 0.3 mm or less, and it is kept as a container. A thin-walled blow bottle having a formable thickness and formed by direct blow. A thin-walled blow bottle consisting of a mouth and a shoulder, a trunk and a bottom,
The bottle mouth portion is composed of an upper mouth tube portion in which a screw is screwed on the outer periphery, a grip ring projecting below the lower mouth tube portion, and a lower mouth tube portion continuing from the grip ring to the shoulder portion,
The grip ring is engraved with knurls on its outer surface.
The lower mouth tube portion has a height sufficient to grip the lower part of the grip ring with fingers, the outer periphery thereof is smaller in diameter than the grip ring, and is expanded in diameter from the upper mouth tube portion,
Thin-walled bottles are made of PE or PP as the material resin, the weight of the resin per unit volume is 0.05 to 0.015 g / ml, the body is reinforced, the wall thickness is 0.3 mm or less, and it is kept as a container. A thin-walled blow bottle having a formable thickness and formed by direct blow.   The thin-walled blow bottle according to claim 2, wherein the outer periphery of the grip ring is square.

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