JP4503028B2 - tube - Google Patents

Description

  The present invention relates to a tube that is filled with contents and pushes out the contents by pressing.

  Conventionally, tubes have been used as product containers for pasty toothpastes, cosmetics, foods, and the like. Generally, the tube has a structure in which one end in the longitudinal direction of the container body is closed and a substantially tubular mouth is formed at the other end. The container body is made of an elastic plastic material such as polyethylene, and the contents filled in the container body are pushed out by pressing the container body.

  As prior art documents disclosing techniques related to the present invention, there are the following documents.

JP 2002-362594 A

  By the way, in the tube as described above, there is no problem when the container body is sufficiently filled with the contents, but when the amount of the contents is reduced, the contents are biased inside the container body, and an appropriate amount is pushed out. It becomes difficult. Moreover, since the container main body has elasticity, when the amount of contents decreases, air easily enters the inside of the container main body. Such ingress of air into the container main body causes deterioration of the contents such as oxidation of the contents.

  This invention is made | formed in view of the said subject, and it aims at providing the tube which can extrude an appropriate quantity stably and can also prevent the approach of air.

In order to solve the above-mentioned problem, the invention according to claim 1 is a tube filled with the contents and extruding the contents by pressing, and a container body filled with the contents, and a longitudinal direction of the container body A substantially tubular mouth provided at the center in the width direction of one end of the container and a male material and a female material respectively disposed on two opposing inner surfaces of the container body are engaged with each other by contact pressure. A substantially straight central fastener, and a peripheral portion other than the connection portion of the mouth portion of one end of the container main body is closed in a substantially straight shape along the width direction, and the central fastener is connected to the container main body. Along the longitudinal direction, the container body is disposed at the center in the width direction from the inside of the container body to the inside of the mouth .

Moreover, the said center fastener exists in the base part by the side of the said container main body in the said opening part, and the said base part has flexibility in the opposing direction of the said male material of the said center fastener, and the said female material.
The tube according to claim 2 is the tube according to claim 1, wherein a male material and a female material respectively disposed on two inner surfaces facing each other as the other fasteners of the central fastener are in contact with each other. A substantially linear fastener that engages and engages by pressure, and is disposed along the longitudinal direction of the container body, wherein the central fastener is compared to the other fasteners, The size facing the female material or the width direction is large.
Moreover, the tube of Claim 3 is a tube of Claim 1, Comprising: As the other fastener of the said center fastener, the male material and female material which are each arrange | positioned on the two inner surfaces which the said container main body opposes, A substantially linear fastener that engages and engages by contact pressure, and is disposed along the longitudinal direction of the container body, and the central fastener is fixed in comparison with the other fasteners. Saga is hard.
Further, the tube of claim 4, wherein, in the tube according to claim 1 or 2, wherein the male part is that having a substantially T-shaped cross section of the protrusion opposite side is substantially flat with said female member.

According to the invention of claim 1 , since the container main body can be maintained in a flat state, it is possible to stably extrude an appropriate amount of contents and prevent air from entering. Further, since the central fastener is disposed from the inside of the container body to the inside of the mouth portion, the orientation of the mouth portion with respect to the container body can be stabilized.

According to the invention of claim 1, the base of the mouth can be made flat and the contents can be used up completely.
According to invention of Claim 2, since a container main body can be maintained in a flat state, an appropriate amount of contents can be pushed out stably and the entry of air can also be prevented. Moreover, since the center fastener arrange | positioned in a center part is larger than another fastener, the inner surface which a container main body opposes can be reliably couple | bonded with a center fastener.
Further, according to the invention of claim 3, since the container main body can be maintained in a flat state, an appropriate amount of contents can be stably pushed out, and entry of air can also be prevented. Moreover, since the center fastener arrange | positioned in a center part is harder than other fasteners, and hard to deform | transform, the shape of a container main body can be stabilized with a center fastener.
Further, according to the invention of claim 4, it is possible to the container body to a more flat state, Ru can be used up more of the contents.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. For convenience of explanation, three-dimensional XYZ Cartesian coordinates are given in the drawings and used to indicate the direction and orientation.

<1. Tube configuration>
FIG. 1 is a perspective view showing a configuration of a tube 1 according to an embodiment of the present invention. 2 is a plan view of the tube 1 viewed from the + Z side, and FIG. 3 is a side view of the tube 1 viewed from the −Y side. The tube 1 is filled with contents such as paste-like toothpaste, cosmetics and food.

  As shown in the figure, the tube 1 includes a container body 2 filled with contents, a mouth portion 3 through which the contents are pushed out, and a cap 4 that closes the mouth portion 3. 2 and 3, the cap 4 is not shown. Each part of these tubes 1 is made of an elastic plastic material such as polyethylene.

  The container body 2 has an elongated shape and includes two main surfaces 23 and 24 facing in the thickness direction (Z direction). One (+ X side) end portion (hereinafter referred to as “closed end”) 21 in the longitudinal direction (X direction) of the container body 2 is closed substantially linearly along the width direction (Y direction) by thermal welding or the like. It has been. On the other hand, the other end portion (hereinafter referred to as “open end”) 22 in the longitudinal direction of the container body 2 is provided with a mouth portion 3 at the center portion in the width direction (Y direction). And the peripheral part other than the connection part of the opening | mouth part 3 in the opening end 22 is closed substantially linearly along the width direction (Y direction) by thermal welding etc. similarly to the closed end 21. FIG. The container body 2 is made of a relatively thin plastic material, and has such flexibility that it can be easily bent by human power.

  The mouth 3 is a substantially tubular member, and one end is connected to the internal space of the container body 2 and the other end is open to the outside. A thread 39 for fastening the cap 4 that closes the opening of the mouth 3 is formed on the periphery of the mouth 3.

  In addition, three fasteners 51, 52, 53 are provided inside the container body 2. These three fasteners 51, 52, 53 are substantially linear fasteners that are also called “rail fasteners” or “seal fasteners”, and are arranged on the inner surface of the container body 2 along the longitudinal direction of the container body 2. .

  4 is a cross-sectional view taken along the line IV-IV in FIG. The fasteners 51 to 53 are each composed of a male material 5a and a female material 5b that face each other in the thickness direction (Z direction). The male material 5 a is disposed on the inner surface of one main surface 24 of the container body 2, and the female material 5 b is disposed on the inner surface of the other main surface 23.

  FIG. 5 is an enlarged view of a cross section of the fasteners 51 to 53. Note that the structures of the fasteners 51 to 53 are all the same as those shown in FIG. As shown in FIG. 5, the male member 5a has a protrusion A1 having a substantially T-shaped cross section. The protrusion A1 has a flat surface facing the female member 5b. On the other hand, the female material 5b has a groove part B1 and a claw part B2 at the inlet of the groove part B1.

  With this structure, when the male material 5a and the male material 5a are brought into contact with each other and pressed in the opposite direction (Z direction) from the state shown in FIG. 5, the male material 5a and the male material 5a are engaged and engaged as shown in FIG. Specifically, the protrusion A1 of the male material 5a enters the groove B1 of the female material 5b, and the claw B2 of the female material 5b holds the end of the protrusion A1 of the male material 5a. At this time, the projection A1 of the male material 5a and the groove B1 of the female material 5b are in surface contact with each other at the facing position.

  If the two main surfaces 23 and 24 of the container main body 2 are pressed in the opposing direction (Z direction) by the engaging action of the fasteners 51 to 53 as shown in FIG. The inner surface of 23 and 24 can be combined. That is, it is possible to make the container body 2 flat and to keep the state.

  As shown in FIG.1 and FIG.2, the three fasteners 51-53 are arrange | positioned substantially parallel. The fastener 52 is disposed at the center of the container body 2 in the width direction (Y direction), and the other two fasteners 51 and 53 are disposed symmetrically with respect to the center line of the container body 2 in the width direction (Y direction). .

  The central fastener (hereinafter referred to as “central fastener”) 52 is smaller in the width direction (Y direction) than the other two fasteners (hereinafter referred to as “end fasteners”) 51 and 53. It is getting bigger. For this reason, the force which maintains the engagement state of the center fastener 52 is larger than the end fasteners 51 and 53. Further, the central fastener 52 is harder than the end fasteners 51 and 53, and is difficult to deform.

  Further, the longitudinal sizes of the end fasteners 51 and 53 substantially coincide with the longitudinal size of the inside of the container body 2, and the end fasteners 51 and 53 are arranged on the container body 2 from the closed end 21 to the open end 22. Arranged throughout the interior. On the other hand, the central fastener 52 is disposed not only in the interior of the container body 2 but also in the mouth portion 3. That is, one end (+ X side) of the central fastener 52 is disposed in the vicinity of the closed end 21 of the container body 2, and the other end (−X side) is an opening closer to the −X side than the opening end 22. Arranged inside the part 3. Thus, by arranging the central fastener 52 from the inside of the container main body to the inside of the mouth portion, the central fastener 52 functions as a reinforcing member, and the orientation of the mouth portion 3 with respect to the container body 2 can be stabilized.

  FIG. 8 is a cross-sectional view at the position VIII-VIII in FIG. 2 and mainly shows a cross section of the mouth portion 3. As shown in FIG. 8, in the inside of the mouth portion 3, the end portion on the −X side of the central fastener 52 extending from the container body 2 is approximately in the middle between the end portion on the opening side and the end portion on the container body 2 side. positioned. Thereby, the center fastener 52 is arrange | positioned in the part by the side of the container main body 2 in the opening part 3 (+ X side).

  The structure of the mouth 3 is different between the portion 32 on the side of the container body 2 (+ X side) where the central fastener 52 exists and the portion 31 on the opening side (−X side) where there is no center fastener 52. Hereinafter, the + X side portion 32 where the central fastener 52 exists is referred to as a “base portion” 32, and the −X side portion 31 which does not exist is referred to as a “leading portion” 31.

  FIG. 9 is a cross-sectional view at the position IX-IX in FIG. 8 and shows a cross section of the leading portion 31. FIG. 10 is a cross-sectional view taken along the line XX in FIG. 8 and shows a cross section of the base portion 32.

  As shown in FIG. 9, the leading portion 31 is composed of a tubular member 33 having a substantially uniform thickness. The tubular member 33 is made of a relatively thick plastic material and has a hardness that is not easily bent by human power. A thread 39 is formed on the peripheral edge of the tubular member 33.

  On the other hand, as shown in FIG. 10, the base portion 32 connects two thick portions 34 made of a relatively thick plastic material and two thin portions 35 made of a relatively thin plastic material. It is formed in a substantially tubular shape. The two thick portions 34 exist in the Z direction (corresponding to the thickness direction of the container main body 2) in the same manner as the two main surfaces 23 and 24 of the container main body 2. On the other hand, the two thin portions 35 are opposed to the Y direction (corresponding to the width direction of the container body 2) orthogonal to the Z direction.

  The male member 5a and the female member 5b of the central fastener 52 are respectively disposed inside the two thick portions 34. Moreover, although the thread 39 is formed in the periphery of the thick part 34, the thread 39 is not formed in the periphery of the thin part 35 (refer also FIGS. 1-3).

  The thick portion 34 has such a hardness that it cannot be bent easily by human force, while the thin portion 35 has flexibility that can be easily bent by human force. For this reason, the base portion 32 can be deformed in the direction (Z direction) where the thick portion 34 faces. That is, the base portion 32 has flexibility such that the male material 5a and the female material 5b of the central fastener 52 bend in a direction (Z direction) facing each other.

  Therefore, if the two thick portions 34 are pressed in the opposing direction (Z direction), the base portion 32 is deformed, and the male member 5a and the male member 5a of the central fastener 52 are engaged as shown in FIG. . Thereby, the inner side surfaces of the two thick portions 34 can be combined. That is, similarly to the container body 2, the base portion 32 can be made flat and maintained in this state.

<2. Use of tube>
Next, the case where the tube 1 comprised as mentioned above is used is demonstrated. As shown in FIG. 3, when the tube 1 starts to be used, the container body 2 is sufficiently filled with the contents. For this reason, an appropriate amount of contents can be pushed out from the mouth 3 by appropriately pressing the container body 2 at the start of use.

  If the remaining amount of the contents inside the container body 2 decreases due to the use of the contents, as shown in FIG. 12, the fasteners 51 to 53 are sequentially engaged from the closed end 21 side (+ X side), The main surfaces 23 and 24 of the part by the side of the closed end 21 of the container main body 2 are combined. Thereby, the part by the side of the closed end 21 of the container main body 2 will be in a flat state, and the flat state will be maintained by the engagement effect | action of the fasteners 51-53.

  As a result, the contents can be shifted to the open end 22 side (−X side) of the container body 2, and an appropriate amount of contents can be obtained by pressing the container body 2 appropriately as in the start of use. It can be stably extruded from the mouth 3. In addition, since the flat state of the container body 2 is maintained, air can be prevented from entering the container body 2. For this reason, deterioration of the contents such as oxidation by touching air is effectively prevented.

  In particular, the central fastener 52 arranged at the center is larger in the width direction than the other end fasteners 51 and 53. Therefore, since the engaging force of the central fastener 52 is relatively large, even if the other end fasteners 51 and 53 are disengaged, the opposing inner surface of the container body 2 is reliably maintained in the coupled state by the central fastener 52. Can do. Moreover, since the center fastener 52 is relatively hard, the shape of the container body 2 is stabilized.

  When the contents inside the container body 2 are almost used up due to further use of the contents, the entire container body 2 can be made flat as shown in FIG. The base part 32 of the part 3 can also be made into a flat state, and those states can be maintained. For this reason, it is possible to use up the contents inside the container body 2 completely.

  As described above, in the tube 1 of the present embodiment, the plurality of substantially linear fasteners 51 to 53 including the male member 5a and the female member 5b are provided in the container body 2 along the longitudinal direction. The male material 5a and the female material 5b of each fastener 51-53 are each arrange | positioned at the two inner surfaces which the container main body 2 opposes, and it engages and engages by contact pressure. Therefore, since the container main body 2 can be maintained in a flat state by the engagement of the fasteners 51 to 53, an appropriate amount of contents can be stably pushed out, and air can be prevented from entering. Moreover, the center fastener 52 arrange | positioned in the center part of the width direction of the container main body 2 among the some fasteners 51-53 is larger in the size of the width direction than the other fasteners 51 and 53. FIG. For this reason, the inner surface which the container main body 2 opposes by the center fastener 52 can be couple | bonded reliably.

  Moreover, since the center fastener 52 is harder than the other fasteners 51 and 53 and is hard to deform | transform, it can maintain the shape of the container main body 2 stably. That is, the central fastener 52 can function as the spinal cord in the tube 1, and the shape of the container body 2 can be stabilized even if a part of the container body 2 is flattened.

  Further, in the tube 1, since the central fastener 52 is disposed from the inside of the container body 2 to the base portion 32 of the mouth 3, the orientation of the mouth 3 with respect to the container body 2 can also be stabilized.

  Moreover, in the tube 1, since the base part 32 of the mouth part 3 has flexibility in the direction in which the male material 5a and the female material 5b of the central fastener 52 face each other, the base part 32 of the mouth part 3 is also flat. The contents can be used up completely.

  Further, since the tube 1 does not allow air to enter the inside of the container body 2, the joint member 8 that connects the mouth portions 3 of the tube 1 as shown in FIG. The contents can be easily replaced.

  The joint member 8 is a substantially tubular member having two openings 81 and 82, and a thread groove 83 that can be engaged with the thread 39 of the mouth portion 3 of the tube 1 is formed on the inner wall. Thereby, the opening 3 of the tube 1 can be attached to the two openings 81 and 82 of the joint member 8, respectively.

  When the two tubes 1 are attached to the joint member 8, the mouth portions 3 of the tubes 1 come into close contact with each other as shown in FIG. For this reason, it is possible to transfer the contents of one tube 1 to the container body 2 of the other tube 1 without touching the air. Moreover, since the container main body 2 of the tube 1 has a structure in which air does not easily enter, it is possible to reliably transfer only the contents without air entering when such contents are transferred. Can do.

<3. Other embodiments>
Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications are possible. Hereinafter, such other embodiments will be described. Of course, you may combine the form demonstrated below suitably.

  In the above embodiment, the central fastener 52 has been described as having a larger size in the width direction (Y direction) than other fasteners, but the size in the opposing direction (Z direction) between the male material 5a and the female material 5b is other than that. It may be larger than the fastener. Even in this case, the force for maintaining the engaged state of the central fastener 52 can be made larger than that of the end fasteners 51 and 53. And the center fastener 52 becomes hard compared with the end fasteners 51 and 53, and can make it difficult to deform | transform.

  In the above-described embodiment, the male material 5a has been described as having a protrusion having a substantially T-shaped cross section, but may have a protrusion having another shape. For example, as shown in FIG. 16, the male member 5a may have a protrusion having a substantially circular cross section. In this case, the female member 5b also has a groove having a substantially circular cross section, and the male member 5a and the female member 5b are engaged with each other. However, as in the above-described embodiment, the male material 5a has a substantially T-shaped protrusion having a substantially flat surface on the side facing the female material 5b, thereby adopting a protrusion having another shape. However, the container body 2 can be made flatter and the contents of the container body 2 can be used up more.

  Moreover, although the said embodiment demonstrated that the three fasteners 51,52,53 were provided in the inside of the container main body 2, three or more fasteners may exist. Even when three or more fasteners are arranged, the size in the opposite direction (Z direction) of the male material 5a and the female material 5b or the width direction (Y direction) is different at the center of the container body 2 in the width direction. What is necessary is just to arrange | position a fastener larger than a fastener.

It is a perspective view which shows the structure of a tube. It is a top view of a tube. It is a side view of a tube. It is sectional drawing in the IV-IV position of FIG. It is a figure which shows an example of the cross-sectional shape of a fastener. It is a figure which shows a mode that the fastener was engaged. It is a figure which shows the container main body made into the flat state. It is sectional drawing in the VIII-VIII position of FIG. It is sectional drawing in the IX-IX position of FIG. It is sectional drawing in the XX position of FIG. It is a figure which shows the base part of the mouth part made into the flat state. It is a figure which shows the mode of the tube in the middle of use of the contents. It is a figure which shows the mode of the tube which used up the content. It is a figure which shows the joint member which connects the opening parts of a tube. It is a figure which shows a mode that two tubes were connected by the joint member. Ru Figure showing one example of the cross-sectional shape of the fastener.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Tube 2 Container main body 3 Mouth part 4 Cap 32 Base part 51,53 End fastener 52 Central fastener 5a Male material 5b Female material 8 Joint member

Claims (4)

A tube filled with contents and extruding the contents by pressing,
A container body filled with the contents;
A substantially tubular mouth provided at the center in the width direction of one end of the container body in the longitudinal direction;
A male material and a female material, which are respectively arranged on two opposing inner surfaces of the container body, are engaged with each other by contact pressure, and are substantially straight central fasteners;
With
A peripheral portion other than the connection portion of the mouth portion of one end of the container body is closed substantially linearly along the width direction,
The central fastener is
Along the longitudinal direction of the container body, the container body is arranged from the inside of the container body to the inside of the mouth part at the center in the width direction of the container body, and the base part on the container body side in the mouth part Exists in
The tube, wherein the base portion has flexibility in a direction in which the male member and the female member of the central fastener are opposed to each other. The tube according to claim 1, wherein
As other fasteners of the central fastener,
A male material and a female material respectively disposed on two opposing inner surfaces of the container main body are substantially linear fasteners engaged and engaged by contact pressure, and are disposed along the longitudinal direction of the container main body. With what will be
The tube characterized in that the central fastener has a larger size in the opposing direction or the width direction of the male member and the female member than the other fasteners. The tube according to claim 1, wherein
As other fasteners of the central fastener,
A male material and a female material respectively disposed on two opposing inner surfaces of the container main body are substantially linear fasteners engaged and engaged by contact pressure, and are disposed along the longitudinal direction of the container main body. With what will be
The tube characterized in that the central fastener is harder than the other fasteners. The tube according to any one of claims 1 to 3,
The said male material has a cross-sectional substantially T-shaped protrusion part by which the opposing side with the said female material becomes a substantially plane, The tube characterized by the above-mentioned.

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