JPH072261A - Squeeze container with foldable wall - Google Patents

Abstract

PURPOSE:To prevent troubles such as filling oxidation, moisture absorption, quality change, decay, diffusion of a volatile component, solidification and dew condensation, by folding a container wall lengthwise so that it is inverted, and to prevent the wasteful use of the filling, by applying a sucking action, thereby adjusting excessive squeeze. CONSTITUTION:A cylindrical part l and a cylindrical part 2 are made different in outside diameter, and the cylindrical part 1 or 2 is folded lengthwise from a folding part 3. Therefore, the capacity can decrease with a decrease in the volume of filling due to its use, and after the folding part 3 reaches the inside of the shoulder 20, only the elasticity of the inserted cylindrical part 2 acts on the filling, so that the original elasticity of the wall is reduced by half and an air sucking action is also reduced by half. Further, because the folding part 3 is shrunk in the advancing direction, the filling remaining in the shoulder 20 can be squeezed and also it can be used by pressing a fingertip against the bottom of a mouth 18. Inside the folded cylindrical part 1 the cylindrical part 2 is shrunk as the filling is used, also the inverted internal wall of the cylindrical part 1 interferes with it, and the restoring force of a container that causes the suction of outside air is reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a squeezing container formed by blow molding of a thermoplastic resin tubular parison, and more particularly to a squeezing container by allowing the container wall to be vertically folded in the vertical direction. Continuity of richness, easy adjustment of discharge and suction, prevention of inhalation from the mouth or early discharge, and squeezing out even the remaining filling in the shoulder, and measuring the amount of filling used Oxidation resistance, moisture resistance, water resistance, gas diffusion resistance, aroma retention, spoilage prevention, dew condensation prevention, economic efficiency, convenience for container contents by forming a clear new bottom while enabling The present invention relates to a squeezed container having excellent performances such as stability.

[0002]

2. Description of the Related Art Conventionally, a squeezing container filled with foods, cosmetics, toothpaste, detergents, medicines, adhesives, paints, dyes, paints, etc. has a single-layer or multi-layer wall made of a thermoplastic resin. The squeezed containers that were used are widely used. These squeezed containers are intended to be used from the outside by pressing the container in the radial direction of the container with a finger or the like from the outside to squeeze the product from the mouth. Accordingly, there is an intake action due to the rigidity of the container wall. In addition, if it is squeezed too much, suctioning and reusing it causes a one-step passage to push it out, so the suction ability for a highly viscous filling is extremely low. Furthermore, the filling in the rigid shoulder is discarded as unsqueezable.
Furthermore, in a self-supporting squeeze container, when the lid is closed to avoid the suction of outside air, the container collapses or falls due to a decrease in the amount of filling. These squeezing containers take an extremely wide variety of forms depending on the purpose for which they are used, and their manufacturing methods are also diverse. These squeezing containers are required to have moisture resistance, water resistance, gas barrier property, etc. required before the filled substance is used.
By providing chemical resistance, squeeze resistance, flavor preservation, aroma retention, light resistance, etc., the filling material is strictly protected from the external environment until it is opened and opened in the hand of the consumer or just before the start of the airbag. It is supposed to be protected.

These squeezing containers are closed at the bottom by end seals or pinch-offs, and the container wall has a single-layer container made of a thermoplastic resin such as various polyolefins, polyamides, polyvinyl chloride, or the like, or a container made of these resins. A multi-walled container that is difficult to peel off through an adhesive layer by combination, or a resin with high gas barrier properties such as ethylene / vinyl alcohol copolymer resin, polyamides, polyvinylidene chloride, aluminum foil, etc. between the layers or surface layers of these combined resins Alternatively, by sandwiching or coating or blending metals, by complementing the weak points of each monolayer as shown in, for example, JP-B-63-305 and JP-B-63-306, excellent mechanical strength and moisture resistance are obtained. Property, water resistance, gas barrier property, chemical resistance, squeeze property, flavor preservation, aroma retention, light resistance, It has become possible to obtain a high performance vessel equipped with Takumi resistance to tear cap removal before or airbags immediately before starting. Also, these are distributed in the hollow from production to filling.

[0004]

However, once the container is opened and opened and consumption is started, an air bag phenomenon gradually occurs due to the rigidity of the container wall, and the sucked outside air and mixed moisture and germs and volatile components diffuse. The protection of the filling against, etc. is equal to zero in the container, and the oxidation of the filling,
Adverse effects such as moisture absorption, deterioration, diffusion of volatile components, deterioration of flavor, dew condensation and hardening in the container, etc. occurred, and it was not possible to deal with the diffusion of suction outside air and its contaminants, bacteria, volatile components. . Further, in terms of the function of squeezing, there is a problem in continuing the richness of squeezing, and it is not possible to deal with the retrograde flow of the packing. Further, it is difficult to deal with the waste of the filling material due to over-squeezing. Furthermore, the use of residual filling in the shoulder has been difficult. Furthermore, it was not possible to deal with buckling or falling.

In order to achieve the purpose of its use by squeezing the filling easily and in a short time, it is desirable that the squeezing passage is free of obstacles. On the other hand, this means that it is vulnerable to the outside air flowing backwards through the passage. The air bag phenomenon can occur due to the rigidity of the container wall or the external stress applied to the container wall unless a valve body is provided at the mouth as a passage in one direction. There is also a means for preventing an air bag as shown in, for example, Japanese Patent Publication No. 63-57316, because of the correlation between the narrowing of the squeezing passage and the viscosity of the filling material. After more than half the use of the object, the balance between the viscosity of the filling and the complementarity of the container wall is broken, and when external stress is applied in the restoring direction to this, as long as the opening is in the open state, it still causes the airbag phenomenon. Become. When the narrowing property of the squeezing passage is increased, the prevention property of the air bag is also increased, but the convenience of easily using the filling material is reduced.

[0006] In addition, for the purpose of preventing an air bag phenomenon due to the restoring force of the container wall, and for the purpose of a retrograde flow of the packing in the container due to the squeezing and a flow of the remaining packing, a clamp is provided from the bottom of the container. Wear it and move it gradually over the outer surface toward the head as it is consumed, facilitating squeezing with one hand, preventing inhalation from the mouth, and flowing the filler toward the mouth. However, in the case of resin containers, the bent parts at both ends are swollen and the center part cannot be collected. There are many.

As described above, the physical properties of a squeezing container having a rigid single-layer or multi-layer wall other than the bag-shaped squeezing container that shrinks following the filling are as follows. Unless it is closed immediately after use due to the decrease due to use, outside air will inevitably occur in the container, or outside air will occur due to external stress exceeding the elastic value, especially when remaining volume is less than half the volume. The tendency is remarkable. The barrier property against the filling of the squeezing container having the rigid container wall is satisfied before the opening and opening, but the inflowing outside air stored by the airbag after the opening and opening and its mixed dust, bacteria and volatilization It is obvious that the protective property against the diffusion of components becomes zero, and it cannot be said that it is vulnerable to oxidation, moisture absorption, deterioration, diffusion, dew condensation and the like. Also, at the beginning of use, each time the squeeze is performed from the stage where the richly squeezed filler is consumed to some extent, a retrograde flow occurs and the squeezing richness is reduced. In need. Further, in the case of squeezing out too much with adhesives, paints, paints, etc., post-treatment is difficult especially with adhesives, paints and dyes.

The present invention is intended to solve the above-mentioned problems, and the barrier property against various gases, liquids, bacteria and the like from the time of filling the contents of the container is excellent as before, and this excellent barrier is also provided. Even if the volume decreases due to the use of the contents of the container, the inhalation from the mouth is prevented as much as possible, and even if inhaled, the body is folded vertically to expel early and minimize the contact with the outside air to the contents. It is possible to maintain the desired container performance continuously until the end of use of the contents, to maintain the richness of squeezing, and to easily squeeze the filler in the shoulder that was conventionally discarded. It is possible to adjust the discharge and suction, maintain the self-supporting property and measure the amount of use, and by folding and restoring at the time of stacking at the time of production, the volume until filling is greatly reduced. Savings streamlining transportation costs in which to St. provide squeezing the container becomes possible.

[0009]

Means and Structure for Solving the Problems The squeezing containers 11A and 11B according to the present invention in which the container wall is folded are squeezing containers formed by blow molding a tubular parison of a thermoplastic resin. 11A is a squeezed container in which the bottom portion having a pinch-off is cut off after molding and closed by an end seal, and the container 11B is a squeezing container closed by a pinch-off without cutting. The body 1 and the body 2 of the container have a length in the diametrical direction as compared with one, and the body 1 and the body 2 are continuous via the folding portion 3. Similarly, the body portion 5 and the body portion 6 are continuous through the folding portion 3a, and hereinafter, the body portion 6 and the body portion 7, and the body portion 7 and the body portion 8 are continuous through the folding portions 3b and 3c, respectively.

The folding part 3 can be a trigger for the reversing and folding means of the body part 1 or the body part 2 by contracting or reversing irrespective of the size of the longitudinal diameter by external stress applied in the longitudinal or lateral direction. At least one of the boundaries with the section can start folding. Since the folded portion 3 is folded into a shape to be embedded in the body portion 1 or the body portion 2 due to external stress applied to the body portion 1 and / or the body portion 2, a large number of irregularities 9 oblique to the twisting direction are formed. It is one of the means to easily shrink the outer diameter by forming and twisting it. Furthermore, the folding part 3 can be inverted by forming a circumferential uneven part on the folding part 3 and receiving vertical stress. Becomes Further, the folding part 3 may be provided with flexibility within a range that does not hinder the filling work. Furthermore,
In the folding parts 3a, 3b, 3c, the container wall inverted from the bottom part forms a new clear bottom part in the order of 3c, 3b, 3a during use, so that the installation stability and the appearance stability of the container are obtained and Buckling and falling are prevented, and a weighing function is added. The folds 3, 3a, 3b, 3c can be adjusted by adjusting the layer thickness by the parison control even if they cannot be visually confirmed, and any means can be used to easily start the fold and form a new bottom. The shape of the vertical and horizontal directions as well as the layer thickness can be selected by those skilled in the art while considering design elements.

In the body portion 1 and the body portion 2, by forming the circumferential unevenness 25 on the body portion 1 and by forming the vertical unevenness 26 on the body portion 2, the both uneven portions are orthogonal to each other. Due to the external stress in the direction of the vertical axis, the body portion 1 acts as easy reversal and the body portion 2 acts as anti-reversal, so that the folding proceeds easily. Further, it is also effective to reverse the above configuration, and in the case of the container 11B, when the container 11B is inverted and folded from the bottom, the circumferential irregularities are folded.
By forming the bottom part in sequence with c, 3b and 3a, the sitting and appearance of the container can be stabilized.

Since the folding portion 3 is composed of vertical and horizontal or obliquely concave and convex portions, it is possible to contract or reverse in the vertical and horizontal directions, and the body portion 1 is inverted and the body portion 2 reaches the shoulder portion 20. Then, the vertical diameter of the folded portion 3 squeezes out the filler in the shoulder portion. The squeezing of the inside of the shoulder portion 20 can be performed by pressing the tip of the body portion 2 inside the body portion 1 with a fingertip after the squeezing of the body portion 2 is completed. Further, when the bottom portion 12 is lifted up by the inverted folding of the container wall and reaches the inside of the shoulder portion 23, the outer surface of the bottom portion 12 can be pressed with fingers and the filling material inside the shoulder portion 23 can be squeezed out.

Since the folding part 3 can be repeatedly inverted,
When using the filling, fine adjustment of discharge or suction can be performed. Further, a large amount of suction can be performed by pulling out the body portion 2. Also, the pinch-off portion can be made to have a suction function even in the container 11B by raising the vertical diameter of the pinch-off portion so that it remains in the bottom and applying stress in the vertical direction.

The end seal 10 at the lower end of the container 11A is closed by welding with high frequency or ultrasonic waves after filling the contents of the container and shutting off from the outside air. The bottom of the container 11B is closed by a pinch-off at the time of molding and shut off from the outside air.

[0015]

In the squeezing container according to the present invention, since the outer diameters of the body portion 1 and the body portion 2 are different from each other, the body portion 1 or the body portion 2 is vertically folded from the folding portion 3, so that the filling material is used. It is possible to reduce the volume following the decrease in volume due to, and since only the elasticity of the inserted body 2 acts on the filler after the folded portion 3 reaches the shoulder portion 20, Since the initial wall elastic value is halved, the intake action is also halved. Furthermore, since the folding part 3 contracts in the direction of movement, it is possible to squeeze out the remaining filling inside the shoulder part 20 which was conventionally discarded, and it is also possible to press the bottom part of the mouth part 18 with a fingertip. Therefore, only a small amount remains in the mouth, and the filler can be economically used.

In the folded body portion 1, the body portion 2 is contracted by the use of the filling material and interferes with the inverted inner wall of the body portion 1 to cause the outside air to be sucked in the outer diameter direction of the container. Elasticity will be greatly reduced.

The longitudinal diameter of the folding portion 3 allows the shoulder 20 to be squeezed out, and can give a small amount of discharge and suction action of the filling material. When used, it is possible to suck the filler that has been squeezed too much and to give the effect of increasing the work efficiency.

In the body portion 1 and the body portion 2, a circumferential irregularity is inserted in the container wall which is inverted by stress. By providing a longitudinal irregularity in the container wall, the external stress acts at a right angle. This is especially true of the inversion and insertion operations.

Due to the external stress applied to the bottom portion 12, the body portion 8 is inverted and folded so that the folded portion 3c becomes a new bottom portion, and 3b and 3a become new bottom portions in sequence, so that the container buckles and falls from the middle. Is prevented and the folding portion 3c,
The distance between 3b and 3a has the function of making it possible to measure the amount of filler used.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a squeezing container according to the present invention in which the container wall is inverted and folded to store no backed air will be described in detail with reference to the drawings. FIG. 1 is a front view showing an embodiment in which the bottom of the squeeze container of the present invention is closed by an end seal, and FIG. 2 is a view of an embodiment in which the bottom of the squeeze container of the present invention is closed by pinch-off. It is a central longitudinal section side view showing an example. FIG. 3 is a side view of the central longitudinal section showing an embodiment in which the folding portion 3 and the body portion 1 are folded, and FIG. 4 is the folding portion 3a and the following parts of FIG. 2 are folded inside the body portion 5. It is a center longitudinal section side view showing one example of a state. FIG. 5 is a central longitudinal side view showing an embodiment in which the body portion 8 of FIG. 2 is inverted and folded in the container so that the folded portion 3c forms the bottom portion. FIG. 6 is a central longitudinal side view showing an embodiment in which the folded portion 3d is formed by the parison control. In FIGS. 1 and 3, reference numeral 11A indicates low density polyethylene for the inner and outer layers, and saponified ethylene / vinyl acetate copolymer (50% by weight) for the intermediate layer.
Blow molding of a tubular parison in a split mold by coextrusion using a triple layer triple die as a barrier layer of a modified resin obtained by blending low density polyethylene (40% by weight) and polyvinyl acetate (10% by weight). Long body diameter 22 mm layer thickness 0.35 mm (average), short body diameter 19 mm layer thickness 0.40 mm (average) formed by
mm, the vertical length of the folded portion is 7 mm, and the body portion 2 is in contact with the folded portion at right angles to form groove-like stress-relief unevenness 26 having a width of 5 mm, a deepest portion 2 mm, and a length of 30 mm, and the body portion 1 is folded. 5m above part 3
A multi-layer wall squeezing container in which m has a concavo-convex 25 for width 5 mm and height 3 mm for easy inversion, the bottom portion is cut off after blow molding and the contents are filled, and then the end seal portion 10 is subjected to high frequency. It is closed. The body portion indicated by the reference numeral 1 is continuous with the body portion indicated by the reference numeral 2 by a folding portion indicated by the reference numeral 3 and having a length in the diameter direction. For the head, the extraction aperture is 5
mm, inclination of shoulder after screw thread 30 °, radial length 6
mm, the total head length was 20 mm.

[0021] 1. Paste-like red paint (for watercolor), 2. Woodworking bond (water-based type), 3.
After filling about 38 ml each of two toothpastes, squeeze out 15 ml each into six cylinder weighing machines.
Each one of 2.3 was immediately closed and the other one was left for 10 minutes. Next, the capped 1.2.3 lid and the body 1 were supported with the left hand, and the body 2 was fully pushed in while the body 1 was inverted with the right hand, and the right hand was released. There was no change, but the body part 2 returned slightly in both cases. It is considered that this is because the folding part receives the return pressure and the internal pressure is balanced. Next, the body 1 was opened with the body 1 inverted and left for 10 minutes. Then, the previous cap was not closed.
When 2.3 and the inverted 1.2.3 of the body 1 were placed side by side, the previous 1.2.3 sucked outside air and the container wall was restored. In the case of 1.2.3, which was reversed, no suction of outside air was observed.

Next, 1. After squeezing out about 2 ml of the red paint on the palette, the mouth was brought into contact with the paint and the lower end of the body 2 was pulled backward, and more than half of the paint was sucked into the container. Next, 2. After squeezing out about 2 ml of the woodworking bond on a square pine wood with a flat surface of 100 cm ² by applying a planer to the surface, pulling out the lower end of the body 2 backward in the same manner as above The above is sucked.

Next, a sample 1.2.3 in which the body 1 is inverted.
When the content of the above was left for 10 minutes with the remaining amount being about 10 ml, no inhalation was observed from the mouth. The body 2 was curved and interfered with the inverted body 1 and could not be restored.

Next, a sample 1.2.3 in which the body 1 is inverted.
The body 2 was pressed to squeeze out the contents, and the index finger was inserted into the space between the body 1 that was inverted and the body 2 that was curved at the end to squeeze the inside of the shoulder. Next, for the sample 1.
The body part 1 and the body part 2 of 2.3 were pressed and squeezed. The six points of these samples were quickly cut into two in the vertical direction with a cutter knife and the remaining amount of the contents was observed. As a result, there was no contents in the shoulder of the sample with the body 1 inverted, and the entire amount was squeezed out. On the other hand, the remaining amount of the content was observed in the sample which was not inverted.

The object of the present invention is to prevent air bags, or to expel backed air at an early stage so that there is no risk of air bags even if the user releases his / her hand, and retrograde flow in the direction of the mouth is prevented as much as possible. In a squeeze container that continues to be rich and allows the remaining filler in the shoulder to be used, and that allows adjustment of discharge and suction, the container wall should have either a single-layer structure or a multi-layer structure. It is also possible to adjust the humidity barrier, gas barrier,
Any resin configuration may be adopted as long as it has a function such as squeeze property.

In FIGS. 2 and 4 and 5,
Reference numeral 11B is a multi-layer wall squeezing container formed by blow molding of a tubular parison by the same co-extrusion with the same resin composition as described above, which is closed by pinch-off without cutting the bottom after blow molding and filling the contents. Part 2
Start from 1. The body portion 5 and the body portions 6, 7 and 8 are long and short in the diametrical direction and are continuous by the folded portions 3a, 3b and 3c as described above.

Next, samples 1 and 2 were molded in the squeezing container closed by the above-mentioned pinch-off. Sample 1. Diameter of the central part of the body 5 is 55 mm, diameter of the upper end is 50 m
m layer thickness 0.3 mm (average), and through the folded portion 3a having a vertical diameter of 5 mm, the diameter of the central portion of the body portion 6 is 53 mm, and the diameter is gradually reduced thereafter, while passing through the folded portions 3b and 3c having a vertical diameter of 3 mm. The bottom end has a diameter of 49 mm, and the shape of the folding part is a substantially semi-circular shape outward of the container. The maximum depth is 1.5 mm in the folding part 3a and the maximum depth is 1 mm in the folding parts 3b and 3c. It was The total length of the head with the male screw was 25 mm, the diameter of the mouth was 20 mm, and the total height of the container was 130 mm. Sample 2. The body portion 22 has a diameter of 22 mm, a layer thickness of 0.38 mm (average), and a central portion through a folding portion 3 a having a vertical diameter of 5 mm, and then a body portion 6.
The diameter of the central portion is 21 mm, and the diameter is gradually reduced, and the lower end diameter is 18 mm after passing through the folding portions 3b and 3c having a vertical diameter of 3 mm.
The shape of the folded portion was a substantially semicircular shape outward of the container, and the maximum depth of the folded portion 3a was 1.5 mm, and the maximum depth of the joint portions 3b and 3c was 0.8 mm. The total length of the head with the male screw is 10 mm, the diameter of the mouth is 11 mm, and the total height of the container is 90.
It was mm. The container of Sample 2 was an inner stopper having a diameter of 3 mm.

1 for 4 containers of sample 1 Miso, 2. After filling 250 ml of each mayonnaise from the mouth,
80 ml of each was squeezed out into each of four measuring cups, and each one of 1.2 was immediately closed, and each of the other ones was allowed to stand for 15 minutes. When both were placed on a table and observed, they did not close. The mayonnaise immediately descends and inhales in about 5 minutes to restore the container wall. The miso was sucked in in about 10 minutes and the container wall was restored. With the plugged 1.2, the container wall was curved and there was no change. Next, do not cap 1. 80 ml of the miso was squeezed out while being evacuated from the container, and it was laid on a table, and it fell. Next, do not cap 2. When 80 ml of the mayonnaise was also evacuated and placed on the squeezing table, it fell down and the mayonnaise at the mouth spattered and contaminated the table, and there was a small amount of dripping. Next, 1. Miso, 2. When the mayonnaise of 1 was opened, 80 ml of each was squeezed out, immediately closed and placed on the table, all fell. Next, the bottom of the closed container was pressed to invert the barrels 8 and 7 inward of the container up to the joint 3b and placed on a table, and the outer surfaces of the barrels 5 and 6 were restored and folded. The tatami portion 3b was stable as a new bottom portion, and no intake air was seen.

Next, when the body part of the container that was not closed was pressed and squeezed, there was a backflow phenomenon, and about 35 ml remained in the bottom part, the inner surface, the shoulder part and the mouth part, and finally the mouth part was pressed in the diametrical direction. Attempt was made to squeeze the filling material in the mouth, but it could not be squeezed by backflowing into the container. Next, a container with a new bottom was newly opened, the bottom surface 12 of the inverted body was pressed upward, and the filling material between the walls was pinched from inside and outside with fingers, and about 10 ml was the inside surface. And remains in the mouth,
Finally, when the mouth portion was diametrically pressed while pressing the bottom portion that abuts against the shoulder portion, the filling in the mouth portion was squeezed out, and about 6 ml could be squeezed out without backflow. When comparing the results of the squeezing, the remaining amount becomes 4/35, and in the normal use method, the remaining amount is very large, which is uneconomical and causes various problems due to the contact of the outside air with the filling material. The occurrence is obvious. On the other hand, it is clear that the physical properties of the squeezed container that enables the reversal of the container wall will be more economically improved by a simple operation, and that there will be very few chances that the outside air will come into contact with the filling material, and the adverse effects of the outside air will be extremely reduced. Is.

Next, A. Red paint (water-based type), B.I. Woodworking bond (water-based type),
C. After filling each 26 ml of hand cream from the mouth and fitting an inner stopper to the mouth, 9 ml of each was squeezed out into a cylinder meter and immediately closed. Next, the bottom part was pressed and the body part was inverted, and then the cap was opened and the bottom part and the wall part were pressed to squeeze. It was possible to squeeze out comfortably without feeling backflow due to the pressing of the filling material. Finally, the inner plug was removed, and the mouth could be squeezed out in the same way as the previous step.

Although not shown, in the squeezing out of the mouth of the former stage, a protrusion is provided at the bottom within a permissible range of pinch-off corresponding to the inner diameter of the mouth, and by inverting it, the filling in the mouth can be used simply and rationally. It becomes possible.

The squeezing container of the present invention achieves the object by reversing the container wall and freely increasing or decreasing the volume accordingly, and one or more folding containers shown in FIGS. 1 and 2 are provided. It is shown that the body portion 1 is inverted in FIG. 1 and the body portions 6 and below are inverted with the tatami portion as a boundary.
This allows the filler to be easily extracted from the mouth and allows the filler between the inverted container walls to be squeezed out in one way without remaining toward the mouth due to external stress. is there.

Next, referring to FIGS. 1 and 3, the folding portion 3 formed at the boundary between the body portion 1 and the body portion 2 of the squeezing container of the present invention is reversed or contracted by external stress. It can serve as a clear trigger for reversing the container wall of the body part 1 or body part 2, and by being able to repeat reversal or contraction, it is possible to adjust the discharge and suction of the filling material and avoid over-squeezing. It can be supported. In particular, the suction action was extremely difficult in the conventional squeezing container because of its structure, but it is easily possible in the squeezing container of the present invention. A large number of irregularities 9 of the folding portion 3 are formed obliquely, and since the strength of rigidity is generated by the formation of the irregularities, the folding portion 3 contracts by applying a torsional stress to the body portion 1 or the body portion 2 with a finger or the like. Then, the inversion of the body is started by the vertical stress applied to the body. Further, the folding part 3 may have a wedge shape as well as a substantially semicircular shape, and any shape and layer may be used as long as the external stress applied to the body part allows the body part to be reversed. You may choose the thickness.

Next, FIG. 3 shows a state in which the body 1 of the squeezing container whose pinch-off bottom is cut off and end-sealed is turned over so that the folding portion 3 reaches the inside of the shoulder portion 20, The figure shows a state in which the body portion 6 and below of the squeezing container whose bottom portion is closed by pinch-off has been inverted and reached the inside of the shoulder portion 23.
Further, as for reversing the container wall, it is possible to reverse the body 2 of the squeezed container with the end seal, and similarly it is also possible to reverse the body 1 of the squeezed container with pinch-off.
Furthermore, it is also possible to reverse the body 1 and the body 2. Further, since the body 1 or body 2 of the container is easily inverted due to external stress, a peripherally-protruding circumferential projecting portion of reference numeral 25 is formed on the reversing body to insert the body. By forming anti-inverted vertical protrusions at the portion 26, the protrusions are orthogonal to each other, and external stress from the top and / or the bottom of the container effectively acts with the folding portion as a force point.

Next, FIG. 2, FIG. 4 and FIG. 5 show the folding part 3 at the center of the squeezing container whose bottom is closed by pinch-off.
By providing a large number of folding parts below a and pressing the bottom part 12 or installing the container and pressing it from the upper part of the container, the lower part of the body part is inverted, and as the squeezing progresses, the inner surface of the bottom part 12 becomes the shoulder part 23. It will reach inside and the squeezing will be completed. In addition, a large number of circumferential irregularities are formed below the center of the container including the folding part, and by pressing the bottom part, the lower part of the body part is inverted and squeezed while clarifying the new bottom fold due to the irregularities. It is also possible to proceed. This allows the spacing of the folds and / or the irregularities to indicate the amount of filler used. In any of the methods, the inner surface of the bottom 12 rises up to the position where it contacts the inside of the shoulder 23, so that the intake action due to the rigidity of the container wall is almost completely prevented, and a large number of folding parts or The presence of the circumferential unevenness also contributes to the installation stability of the container in use, and the container is prevented from falling due to buckling or the like. As the squeezing progresses and the bottom of the container gradually becomes hollow, the remaining filling between the container walls can be easily collected with fingers, and the harmful effects such as oxidation, moisture absorption, deterioration, and diffusion of volatile components can be suppressed. It can be prevented until the end of the delivery.

Further, although not shown, since the container in the former stage is inverted from the central portion and below, the workability is stabilized by forming a collar portion on the head of the container for ensuring the stability in the holder for the filling work. become. The buckling strength of the folding part depends on the correlation between container load and drop load, the load and viscosity of the filling material, and the magnitude of the pressure applied to the top and bottom when the container is opened. It is preferable to select a configuration that mainly responds to artificial stress, for example, lateral stress such as twisting. Further, it is possible to easily give the buckling strength to the circumferential uneven portion. Furthermore, the suction action can be imparted by leaving the vertical diameter of the pinch-off portion in a range that can be grasped by fingers and raising the bottom portion to make it a bottom. In addition, as shown in FIG. 4, since the folding part 3a and the following parts have a structure in which they can be inverted and folded into the body part 5, air volume inside the container is reduced at the time of production to reduce the volume and use the internal space. Since the products can be stacked and shipped, significant savings can be made from the viewpoint of packaging and transportation costs. At the time of filling, the container wall can be easily restored by pressurizing air or a filling material.

Next, referring to FIG. 6, the inner surface of the cavity of the split mold is formed by a conventional flat surface, and gentle irregularities are formed on the tubular parison by the parison control, so that the rigidity of the container wall after the blow molding is weakened. It is possible to provide the folded portion 3d with a thin portion, and it is also possible to obtain a large number of folded portions by clarifying the positioning and pulsating the control.

[0038]

INDUSTRIAL APPLICABILITY As described above, the squeezing container in which the container wall formed by blow molding of the thermoplastic resin tubular parison according to the present invention has an inversion, exhibits a particular effect as the amount of packing decreases. It is a thing, and the body 1 and the body 2,
And the body portion 5 and the body portions 6, 7, 8 are folded portions 3, 3a, 3b,
3c to make the diameters different from each other in the diametrical direction so that the body portion 1 and / or the body portion 2 including the folded portion, the body portion 6 including the folded portion 6,
It becomes possible for 7 and 8 to be easily inverted in the longitudinal direction of the container due to external stress.

The great effect produced by the structure and operation described in the preceding paragraph is that the air bag inside the container accompanying the use of the filling material follows the volume reduction of the filling material by a simple operation and the container wall reverses and contracts. When the air bag is generated, the air bag is discharged early, and the air bag is reversed and contracted. This is effective in eliminating the adverse effects such as oxidation, moisture absorption, deterioration, decay, diffusion of volatile components, solidification, and dew condensation in the container, which have been conventionally caused by airbags.

Since the folding part 3 and the body part 1 or the body part 2 have the function of freely reversing and restoring due to external stress, it becomes possible to adjust the discharge or suction of the filling material, and in the past, it was wasted due to over-squeezing. Since it is possible to use an appropriate amount by adding a suction effect to the filled material, the use of a substance that achieves its use in a small amount in paints and other paints, adhesives, cosmetics, detergents, etc. Besides, there are great economic and convenience enhancement effects. Further, since the suction action is possible, the conventionally disposable container can be used in a cycle, and there is an effect of resource saving.

In an ordinary squeezing container, what is initially squeezed richly causes a backward flow in the squeezing direction as the squeezing progresses, resulting in a waste of labor. Since the inner volume can always follow the volume of the filling by reversing the part, there is an effect that abundant squeezing is consistently continued from the beginning of use. Further, in the conventional squeezing container that is self-supporting at the bottom, it buckled and buckled in the middle of the container with the progress of use of the filling material. Since the bottom is formed, the appearance is always stable and buckling is prevented.

In addition, in the process of using the filling material, in the conventional squeezing container of the air intake type, the filling material may scatter at the same time as nausea when squeezing out again, which often contaminates clothes and the surroundings. Although it caused labor and economical burden of cleaning in some cases, the squeezing container of the present invention eliminates clothes and surrounding pollution because the intake that causes nausea is prevented from the beginning, so the cleaning labor and economy are reduced. There is an effect of reducing the physical burden.

Further, it has been difficult to squeeze out a relatively high-rigidity shoulder portion except a part in the past, but in the present invention, the folding portion 3 hits the shoulder portion. By contacting and contracting, it is possible to squeeze out the lengthwise portion of the folded portion, and by pressing the inside of the shoulder portion with the fingertip from the space of the body portion 2 that is largely curved, the filling material inside the shoulder portion can be squeezed out. It will be possible. Furthermore, in the case of a squeezing container of the type that is inverted from the bottom of the container, the inner surface of the bottom comes into contact with the inside of the shoulder and it is possible to squeeze the filling material inside the shoulder by pressing with the fingers, etc. This has the economical effect of making it possible to use the wasted packing.

Further, the folding portions 3a, 3b, 3c and, if necessary, the projections and depressions formed between the folding portions 3a, 3b, 3c and the container wall are inverted and folded to form a clear and novel bottom portion, and the container can be stably and self-standing. It has the effect of removing unsightly distortion.

Further, since the container wall which is folded by sequentially folding the folded portions and / or the concave and convex portions below the folded portion 3a from the bottom portion is formed while forming a new bottom portion, the usage amount of the filler is different from that of the other. It is possible to measure without using a measuring instrument, and there is an effect that calorie calculation, a mixing ratio, and an appropriate usage amount can be easily measured.

Furthermore, since the producer of the container can deflate the container by air bleeding immediately after the production or before the shipment to fit and stack the products for shipping, the conventional packaging volume becomes at least half or less, and the head 22 It is also possible to reduce it to one fifth or less by adjusting the vertical diameter of the body part 5 and the vertical diameter of the body part 5 to each other, and there is a great saving effect of the packaging material and a saving effect of the transportation cost. Furthermore, if the air is removed after the aseptic treatment, the cleaning process in the filling factory can be simplified.

[Brief description of drawings]

FIG. 1 is a front view showing an example of a state in which a bottom portion of a squeezing container in which a container wall of the present invention is folded is closed by an end seal.

FIG. 2 is a central longitudinal side view showing an embodiment in which the bottom of the squeezed container in which the container wall of the present invention is folded is closed by pinch-off.

FIG. 3 is a view of a squeezing container in which the container wall of the present invention is folded.
It is a central longitudinal side view showing an example in which the container wall in is folded.

FIG. 4 is a view of a squeezing container in which the container wall of the present invention is folded.
It is a central longitudinal side view showing an example in which the container wall in is folded.

FIG. 5 is a view of a squeezing container in which the container wall of the present invention is folded.
FIG. 7 is a central enlarged cross-sectional view showing an example of a state in which the body portion 8 of FIG.

FIG. 6 is a central longitudinal side view showing an embodiment in which the folding portion of the squeezing container in which the container wall of the present invention is folded is formed by parison control.

[Explanation of symbols]

 1 Body 2 Body 3 Folding 3a Folding 3a Folding 3b Folding 3c Folding 3d Parison Control Folding 3e Parison Control Folding 5 Body 6 Body 7 Body 8 Body 9 Folding Concavo-convex part of tatami part 10 End seal part 11A Squeeze container 11B Squeeze container 12 Pinch-off bottom part 18 Mouth part 19 Head part 20 Shoulder part 21 Mouth part 22 Head part 23 Shoulder part 25 Circular protrusion part 26 Vertical uneven part 31 Body part 32 Body part 33 Body part 34 Head part 35 Shoulder part 36 Bottom part 38 Mouth part

Claims (7)

[Claims] 1. A squeezing container formed by blow molding a thermoplastic resin tubular parison, wherein the body diameter of the container wall is made different in the diameter direction through at least one or more folding parts, A squeeze container characterized in that the side portion and / or the bottom portion of the container wall are inverted and folded by external stress to facilitate squeezing and that the outside air is not stored. 2. The squeeze container according to claim 1, wherein the copper portion of the container is provided with unevenness that is anti-inverted and / or easily inverted to enhance the inversion stress in the longitudinal direction. 3. The squeeze container according to claim 1, wherein an inner surface of the folding portion or the bottom of the container is in contact with the inside of the shoulder portion, and the filling material in the shoulder portion can be squeezed out by an external stress. 4. The squeezing container according to claim 1, wherein the folding portion is provided with a concavo-convex portion whose outer diameter can be contracted and reversed by an external stress to facilitate the start of folding and to adjust discharge or suction. . 5. The squeeze container according to claim 1, wherein the squeezing container is capable of weighing the filling material squeezed by the body portion in which the space between the folds that are inverted is inverted by external stress. 6. The squeezing container according to claim 1, wherein the folding part or the uneven part below the center of the container forms a new bottom part by reversing the container wall. 7. In a squeezed container formed by blow molding a thermoplastic resin tubular parison, at least one or more thin folds in the body of the container wall are weakened to the rigidity of the container wall by parison control. A process for producing a squeezed container in which a container wall is folded, which is formed by applying