JP2017074592A - Method for producing jet nozzle tube - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a jet nozzle tube for achieving stable and constant jetting of content.SOLUTION: In order to produce a jet nozzle tube 1 having a valve function from a nozzle tube body 10 produced of synthetic resin material, pipe material 11 is inserted and disposed into a hollow part of the nozzle tube body 10. After that, a part at which the pipe material 11 is disposed in the nozzle tube body 10 is heated and softened to be pushed from both ends while pressing without deforming an outer diameter of the nozzle tube body 10, and then finally cooled to be fixed. Through such production processes, in the hollow part of the nozzle tube body 10, the jet nozzle tube 1 is obtained with a valve 20 having a through hole 21 of a diameter smaller than an inner diameter of the nozzle tube body 10.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an ejection nozzle pipe, and more particularly to an ejection nozzle pipe having a valve function.

  In the structure of sprays and aerosols, in addition to the contents, spray cans and aerosol cans are filled with liquefied gas such as LPG or butane, or nitrogen, carbonic acid, air, etc. The structure is such that the contents in the can are ejected using the ejection nozzle provided, or an opening provided at the tip of the nozzle tube by further attaching a nozzle tube to the ejection nozzle.

In the latter case, that is, when a nozzle tube is attached and the contents are ejected, the contents and gas alternately enter the nozzle tube, and as a result, the contents intermittently enter from the nozzle outlet at the tip of the nozzle tube. There was a problem that it was ejected and stable ejection was not performed.
In addition, the amount of contents to be ejected depends on the gas pressure in the can, so it is ejected at a high pressure at the beginning. As a result, there was a problem that the ejection amount was not constant.

  In order to realize stable and constant ejection of the contents, it is necessary to achieve a constant gas pressure for a long time and to mix the contents and the gas well without being divided in the nozzle tube. For this reason, various researches have been conducted on the development of gas capable of obtaining a stable gas pressure for a long time and the structural improvement of the spray can itself, but it is still in the process of research. For the nozzle tube that realizes stable and constant ejection, there is a conventional method using a flow stabilizer, but it cannot be installed inside the nozzle and needs to be adjusted. Since it was expensive, no one was able to realize a stable eruption.

JP 2008-307499 A

  In view of the above problems, an object of the present invention is to provide an ejection nozzle tube that can realize stable and constant ejection of contents and can be easily manufactured at low cost.

  In order to solve the above-mentioned problems, the present invention is a method for producing an ejection nozzle pipe having a valve function from a nozzle pipe body produced from a synthetic resin material, which is produced from a synthetic resin material having thermoplasticity. A pipe material that functions as a valve is inserted and arranged by providing a hollow passage that has a required length and a required outer diameter width and has a required inner diameter width at a predetermined location in the hollow portion of the nozzle tube body, Heat the specified part of the main body where the pipe material is inserted to the required length and soften it, and hold the softened part by heating so that there is no change in the outer diameter of the nozzle pipe body. It is the structure which pushes in from the both ends side, and cools the heated location and solidifies.

  Further, the present invention is a method for manufacturing an ejection nozzle tube having a valve function from a nozzle tube body manufactured from a synthetic resin material, wherein the nozzle tube body is manufactured from a synthetic resin material having thermoplasticity. A pipe material that functions as a valve is inserted and arranged at a predetermined location in the hollow portion by providing a hollow path having a required length and a required outer diameter width and having a required inner diameter width. Fit a heat-shrinkable tube of the required length at a predetermined location where the material is inserted, heat the portion where the heat-shrinkable tube is fitted, soften the nozzle tube body, shrink the heat-shrinkable tube, and heat It is the structure which cools and solidifies the done part.

  Furthermore, the present invention is configured such that in the method for manufacturing the ejection nozzle tube, the outer peripheral surface of the pipe material is subjected to a retaining process.

  According to the method of manufacturing a jet nozzle pipe having a valve function according to the present invention, the nozzle pipe body has thermoplasticity, so that the pipe material is inserted into the hollow portion of the nozzle pipe body and heat is applied from the outside. In addition, the nozzle tube main body can be provided with a valve function by appropriately performing a simple process, thereby making it possible to manufacture an ejection nozzle tube that realizes stable and constant ejection.

  In addition, according to the method of manufacturing an ejection nozzle tube having a valve function according to the present invention, the valve function in the nozzle tube main body is performed by a pipe material separate from the nozzle tube main body, so the shape of the through hole in the pipe material Thus, it is possible to easily produce an ejection nozzle tube having such various shapes of through-holes.

  Furthermore, according to the ejection nozzle pipe having a valve function according to the present invention, the valve having a through hole smaller in diameter than the inner diameter of the nozzle pipe body is provided in the hollow portion of the nozzle pipe body. Through which the gas pressure is made constant, the amount of ejection of the contents is little changed between the initial stage and the end stage, and stable ejection can be sustained for a long time, and the desired flow rate can be obtained, and The gas dissolved in the contents by the action of the valve is partially separated from the contents, and after passing through the valve, stirring is performed in the mixing chamber to achieve uniform mixing of the contents and gas into a foam and stable. Eruption can be performed.

It is a flowchart which shows embodiment of the manufacturing method of the ejection nozzle pipe | tube concerning this invention (Example 1). It is explanatory drawing which shows embodiment of the pipe material used for the manufacturing method of the ejection nozzle pipe | tube concerning this invention. It is sectional drawing which shows embodiment of the ejection nozzle pipe | tube concerning this invention. It is a flowchart which shows embodiment of the manufacturing method of the ejection nozzle pipe | tube concerning this invention (Example 2). It is sectional drawing which shows embodiment of the ejection nozzle pipe | tube concerning this invention.

  The present invention is characterized in that a valve 20 having a through hole 21 having a diameter smaller than the inner diameter of the nozzle tube main body 10 is provided in a hollow portion of the nozzle tube main body 10. DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment of a method for manufacturing an ejection nozzle tube 1 according to the present invention and an ejection nozzle tube 1 manufactured by the method will be described with reference to the drawings.

  In addition, this invention is not specifically limited to the structure shown to the following embodiment, In the range which does not deviate from the summary of the technical idea of this invention, it can change arbitrarily.

FIG. 1 is a flowchart showing a first embodiment of a method for producing a jet nozzle pipe 1 according to the present invention.
That is, in this embodiment, the nozzle tube body 10 is sequentially processed in the following steps to manufacture the ejection nozzle tube 1.
The nozzle tube body 10 used in this embodiment is manufactured from a thermoplastic synthetic resin material such as LDPE (low density polyethylene).

  First, a pipe material 11 having a required length and a required diameter is inserted and disposed in the hollow portion of the nozzle tube body 10. The pipe member 11 is made of a heat-resistant material that is resistant to changes in shape due to heat, such as HDPE (high density polyethylene) or metal, and has a hollow passage 11a having a required inner diameter width inside. Become.

  At this time, the outer diameter width of the pipe material 11 needs to be an outer diameter width that can be inserted into the hollow portion of the nozzle tube body 10, and is equal to or less than the diameter width of the hollow portion of the nozzle tube body 10. However, this is not the case when the material of the nozzle tube body 10 has expandability. Moreover, the inner diameter width which comprises the hollow path 11a of the pipe material 11 becomes the diameter width of the through-hole 21 which the valve 20 formed in the nozzle pipe main body 10 as it is. Therefore, the inner diameter width of the pipe material 11 is arbitrarily determined in consideration of the ejection amount and the like.

  In addition, the length of the pipe material 11 becomes the length of the valve 20 finally formed as it is. Therefore, the length of the pipe material 11 is appropriately determined in consideration of the length of the valve 20 that is finally formed based on the ejection amount and the like.

  The number of pipe members 11 inserted and disposed in the hollow portion of the nozzle tube main body 10 is illustrated in the drawing with respect to a single case, but is not limited to this mode, and is finally formed based on the amount of ejection and the like. The number is appropriately determined in consideration of the number of through holes 21 in one valve 20.

  The position at which the pipe material 11 is arranged in the nozzle tube main body 10 is not particularly limited, and is appropriately determined according to the position where the valve 20 is formed, such as a tip portion or an intermediate position. In the drawing, a case where the pipe material 11 is arranged at a predetermined intermediate position of the nozzle tube main body 10 is shown. At this time, the content B and gas G, which are uniformly mixed through the formed valve 20, are arranged in a predetermined intermediate position as shown in the drawing so as to be ejected from the ejection port in that state. In addition, a mode in which the pipe material 11 is arranged at a position close to the tip portion provided with the ejection port in the nozzle tube body 10 can be considered.

  By the way, although it does not specifically limit about the outer shape of the said pipe material 11, For example, various shapes as shown in FIG. 2 can be considered. FIG. 2 is an explanatory view showing an embodiment of the pipe material 11 used in the method of manufacturing the ejection nozzle pipe 1 according to the present invention. That is, as a basic shape, a pipe material 11 having a straight outer shape as shown in FIG. The straight pipe material 11 has a shape that can be inserted anywhere in the hollow portion of the nozzle tube body 10, and is optimal when the pipe material 11 is disposed at a predetermined intermediate position in the nozzle tube body 10. Moreover, the pipe material 11 which has the outer shape by which the perforation process 11c was given to the outer periphery of the pipe material 11 as shown in FIG.3 (b) can be considered. The pipe material 11 is prevented from being pulled out after being inserted into the nozzle tube main body 10 and heated by being subjected to the retaining process 11c.

  In the drawings (FIGS. 1 to 3) for explaining the present embodiment, the shape of the hollow passage 11a provided in the pipe material 11 is shown as being straight, but the shape of the hollow passage 11a is shown. Is not limited to this. Although the shape of the other hollow path 11a is not illustrated, for example, an aspect using the pipe material 11 provided with the spiral or saddle-shaped hollow path 11a can be considered. By using the pipe material 11 provided with the spiral hollow passage 11a, the valve 20 is formed with a spiral through hole 21, and the length of the valve 20 is longer than that of the straight through hole 21. The length of the through hole 21 can be made longer without changing.

  Next, a predetermined portion of the nozzle tube main body 10 is heated in a state where the pipe material 11 is inserted and arranged in the hollow portion of the nozzle tube main body 10. There is no particular limitation on the heating method, and the heating temperature of the nozzle tube body 10 is heated to at least a temperature at which the nozzle tube body 10 is softened to such an extent that the shape can be changed. Since the nozzle tube body 10 has thermoplasticity, the heated portion of the nozzle tube body 10 is softened by heating. About the location to heat in the nozzle pipe main body 10, it becomes a location where the said pipe material 11 is inserted and arrange | positioned.

  After a predetermined portion of the nozzle tube body 10 is softened by heating, the softened portion is pushed from both ends in the length direction of the nozzle tube body 10 to change the shape of the nozzle tube body 10. At this time, the outer peripheral surface is pressed so that the outer diameter of the nozzle tube main body 10 does not change. As a result, the softened nozzle tube main body 10 is pushed inward so as to close the hollow portion on the outer periphery of the inserted pipe member 11 without being pushed outward.

  Thereafter, the heated portion of the nozzle tube body 10 is cooled. The cooling method is arbitrary regardless of natural cooling or forced cooling. By cooling, the nozzle tube main body 10 is solidified in a state where it protrudes inward so as to close the hollow portion on the outer periphery of the pipe material 11.

Through the above steps, the ejection nozzle tube 1 according to this example is completed. FIG. 3 is a cross-sectional view showing an embodiment of the ejection nozzle tube 1 manufactured by the manufacturing method according to the present example.
As shown in FIG. 3, the completed ejection nozzle tube 1 is solidified by pressing the softened nozzle tube body 10 so as to block the hollow portion on the outer periphery of the pipe material 11 at a predetermined intermediate position of the nozzle tube body 10. Yes. Thereby, since the hollow path 11 a of the pipe material 11 functions as the through hole 21, the entire portion of the pipe material 11 and the nozzle tube main body 10 that protrudes into the hollow portion functions as the valve 20.

  At this time, a mixing chamber 16 is formed between the valve 20 formed in the nozzle tube main body 10 and the tip portion. The gas G dissolved in the content B is partially separated from the content B when passing through the valve 20, but by forming the mixing chamber 16, the gas G is previously ejected as a gas from the can. The gas G and the content B separated by the valve 20 including the gas G are agitated in the mixing chamber 16, and the content B and the gas G are uniformly mixed to form a foam. It will contribute to stable ejection. In addition, a jet nozzle is provided in any one or both of the front-end | tip part or the predetermined intermediate position in the mixing chamber 16. FIG.

  As mentioned above, according to the ejection nozzle pipe 1 concerning a present Example, the gas pressure for the content B ejection is kept constant for a long time, adjusting the flow volume by the effect | action of the valve 20 formed in the nozzle pipe main body 10. FIG. In addition, the gas G that has passed through the valve 20 (through hole 21) is bubbled and uniformly mixed with the contents B in a bubble shape, thereby enabling stable ejection.

FIG. 4 is a flowchart showing a second embodiment of the method for manufacturing the ejection nozzle tube 1 according to the present invention.
That is, in this embodiment, the nozzle tube body 10 is sequentially processed in the following steps to manufacture the ejection nozzle tube 1.
In addition, it is the same as that of a 1st Example that the nozzle tube main body 10 used by a present Example is manufactured with the synthetic resin raw material which has thermoplasticity.

  First, a pipe material 11 having a required length and a required diameter is inserted and disposed in the hollow portion of the nozzle tube body 10. The pipe material 11 is made of a heat-resistant material that is resistant to changes in shape due to heat, such as HDPE (High Density Polyethylene), metal, and the like, and a hollow passage 11a having a predetermined inner diameter width is provided therein. Become.

  Regarding the pipe material 11, the outer diameter width, inner diameter width and length of the pipe material 11, the number and position of the pipe material 11 inserted and disposed in the hollow portion of the nozzle tube body 10, and the outer shape and hollow path of the pipe material 11 About the shape of 11a, since it is the same as that of the said 1st Example, description is abbreviate | omitted.

  Next, the heat shrinkable tube 12 is fitted at a predetermined position on the outer periphery of the nozzle tube main body 10. The position where the heat shrinkable tube 12 is fitted in the nozzle tube main body 10 is the same position as the position where the pipe material 11 is inserted and arranged. In addition, although there is no limitation in particular about the length of the heat contraction tube 12 which should be fitted, it is preferable to set it as substantially the same length as the pipe material 11 inserted.

Next, the heat shrinkable tube 12 fitted to the nozzle tube main body 10 is heated. The heating method is not particularly limited, and the heating temperature of the heat-shrinkable tube 12 is appropriately determined in consideration of the shrinking temperature of the heat-shrinkable tube 12 and the temperature at which the nozzle tube body 10 is softened to such an extent that its shape can be changed. It is determined. Since the heat-shrinkable tube 12 has a function of contracting when heated, the diameter is reduced by heating. Moreover, since the nozzle tube main body 10 has thermoplasticity, the heating location of the nozzle tube main body 10 is softened by heating. The nozzle tube main body 10 is tightened from the outer peripheral side by contracting the heat shrinkable tube 12 by heating using these interactions, and the nozzle tube main body 10 softened by heating at this time is a hollow portion on the outer periphery of the pipe material 11. It will be pushed inward so as to block the shape, and the shape will be changed.
The degree of contraction of the heat-shrinkable tube 12 by heating is not particularly limited. For example, as shown in the drawing, the heat-shrinkable tube 12 is contracted so that the outer diameter of the heat-shrinkable tube 12 matches the outer diameter of the nozzle tube body 10. Embodiments are possible.

  Thereafter, the heated portions of the heat shrinkable tube 12 and the nozzle tube main body 10 are cooled. The cooling method is arbitrary regardless of natural cooling or forced cooling. By cooling, the heat-shrinkable tube 12 is solidified in a state where the nozzle tube main body 10 is pressed from the outer peripheral side and tightened, and the nozzle tube main body 10 is hollow at the outer periphery of the pipe material 11 by tightening the heat-shrinkable tube 12. It is solidified in a state of squeezing inward to close the part.

Through the above steps, the ejection nozzle tube 1 according to this example is completed. FIG. 5: is sectional drawing which shows embodiment of the ejection nozzle pipe 1 manufactured by the manufacturing method concerning a present Example.
As shown in FIG. 5, the completed ejection nozzle tube 1 has a nozzle tube body 10 softened by tightening the heat shrinkable tube 12 from the outer periphery side at a predetermined intermediate position of the nozzle tube body 10. In this case, it is pushed out and solidified so as to close the hollow part. Thereby, since the hollow path 11 a of the pipe material 11 functions as the through hole 21, the entire portion of the pipe material 11 and the nozzle tube main body 10 that protrudes into the hollow portion functions as the valve 20.

  Since the mixing chamber 16 is formed between the valve 20 formed in the nozzle tube main body 10 and the tip portion, and the position where the ejection port is provided is the same as in the first embodiment, the description will be made. Is omitted.

  As mentioned above, according to the ejection nozzle pipe 1 concerning a present Example, while adjusting the flow rate by the effect | action of the valve 20 formed in the nozzle pipe main body 10, like the said 1st Example, for the content B ejection The gas pressure can be kept constant for a long time, and the gas G that has passed through the valve 20 (through hole 21) is bubbled and uniformly mixed with the contents B in the form of bubbles, enabling stable ejection.

  The ejection nozzle tube 1 according to the present invention completed as described in each of the above examples was subjected to a comparative experiment with a conventional nozzle tube that does not include the valve 20 in order to confirm the effect. This comparative experiment uses an aerosol can with a pressure of 0.5 Mpa, and the diameter width of the through hole 21 (the hollow passage 11a of the pipe material 11) is 0.2 mm and 0.3 mm as the structure of the ejection nozzle tube 1 according to the present invention. Experiments were conducted to confirm the ejection characteristics by measuring the ejection amount for each time series for two types, and for the three types of the through-holes 21 having lengths of 7 mm, 14 mm, and 21 mm. The experimental results are shown in the following table.

Table 1 shows the transition of the ejection amount for each experimental object for each time series, and Table 2 is a graph of the experimental results.
As can be seen from the table, it can be seen that there is a clear difference in action and effect in the adjustment of the ejection amount and the transition of the ejection amount for each time series depending on the presence or absence of the valve 20. That is, by providing the valve 20, the effect of adjusting and suppressing the ejection amount is exhibited, and a change in the ejection amount between the initial ejection stage and the final ejection stage is suppressed, and stable ejection can be realized from beginning to end. .

Note that the effect of suppressing the change in the ejection amount between the initial stage and the final stage of the ejection is further clarified by Tables 3 and 4. That is, Table 3 shows a comparison between the initial ejection amount and the final ejection amount based on the experimental results shown in Table 1, and Table 4 shows the experimental results in a graph.
As can be seen from the table, it can be seen that there is a clear difference in action and effect in the change between the initial ejection amount and the final ejection amount depending on the presence or absence of the valve 20.

By the way, when Table 1 thru | or Table 4 is seen, it turns out that the change in the amount of ejection has arisen with the diameter width of the through-hole 21. FIG. That is, for the through-holes 21 having the same length, when the diameter width is 0.2 mm and 0.3 mm, the amount of ejection is larger when 0.3 mm. Therefore, the diameter width of the through hole 21 is effective in adjusting the ejection amount.
Similarly, looking at Tables 1 to 4, it can be seen that the change in the ejection amount for each time series varies depending on the length of the through hole 21. That is, when the lengths of the through holes 21 having the same width are compared between 7 mm, 14 mm, and 21 mm, there is a difference in the change in the change in the ejection amount for each time series when the length is 7 mm, 14 mm, and 14 mm, 21 mm Get smaller. Therefore, the length of the through hole 21 exerts an effect of suppressing the change in the ejection amount between the initial ejection stage and the final ejection stage.

  Tables 5 to 8 below show other experimental results on the change in the ejection amount for each time series due to the difference in the length of the through hole 21. In this experiment, an aerosol can having a low pressure of 0.22 Mpa is used, and the diameter width of the through hole 21 is 0.3 mm and the length of the through hole 21 is 7 mm as the structure of the ejection nozzle tube 1 according to the present invention. And 21 mm, an experiment was performed to confirm the ejection characteristics by measuring the ejection amount for each time series.

  As can be seen from Tables 5 to 8 above, when the length of the through hole 21 is compared between 7 mm and 21 mm, the difference in the transition change of the ejection amount for each time series is smaller when the length of the through hole 21 is 21 mm than 7 mm. I understand that. That is, by increasing the length of the through-hole 21, it is possible to achieve an effect of suppressing a change in the ejection amount between the initial ejection stage and the final ejection stage, and to realize more stable ejection.

  Next, Table 9 to Table 10 below show the experimental results regarding the characteristics of the valve 20 depending on the difference in the ejection pressure. In this experiment, when the diameter width of the through hole 21 is 0.3 mm and the length of the through hole 21 is 7 mm as the structure of the ejection nozzle tube 1 according to the present invention, the pressures are 0.38 Mpa and 0.22 Mpa. Using two types of aerosol cans, an experiment was conducted to confirm the ejection characteristics by measuring the ejection amount for each time series.

  As can be seen from Tables 9 to 12, although there was a difference in the ejection amount due to the difference in the ejection pressure, all of them were able to obtain the same stable ejection characteristics. Therefore, regardless of the difference in the ejection pressure, the effect of the valve 20 is exhibited, and the ejection nozzle pipe 1 according to the present invention including the valve 20 can be used as any ejection nozzle pipe. Prove that there is.

  The present invention provides an ejection nozzle tube 1 that exhibits excellent effects by a simple manufacturing method. Specifically, it can be manufactured by inserting a pipe material into the conventional nozzle tube main body 10 and applying heat treatment or other simple devices. According to the manufactured nozzle tube 1, stable and constant ejection Can be realized. Therefore, it is considered that the industrial applicability of the present invention is very high.

DESCRIPTION OF SYMBOLS 1 Jet nozzle pipe 10 Nozzle pipe main body 11 Pipe material 11a Hollow path 11c Stopper process 12 Heat shrinkable tube 16 Mixing chamber 20 Valve 21 Through-hole B Contents G Gas

Claims (3)

A method for producing an ejection nozzle pipe having a valve function from a nozzle pipe body produced from a synthetic resin material,
As a valve, a nozzle tube body made of a synthetic resin material having thermoplasticity has a required length and a required outer diameter width at a predetermined location in a hollow portion of the nozzle tube body, and a through hollow passage having a required inner diameter width is provided. A functional pipe material is inserted and arranged, and a predetermined portion where the pipe material is inserted in the nozzle tube body is heated by a required length to be softened, and the outer diameter of the nozzle tube body does not change at the softened portion by heating. A method for producing a jet nozzle tube, wherein the nozzle tube body is pressed from both ends in the length direction while being pressed, and the heated portion is cooled and solidified. A method for producing an ejection nozzle pipe having a valve function from a nozzle pipe body produced from a synthetic resin material,
As a valve, a nozzle tube body made of a synthetic resin material having thermoplasticity has a required length and a required outer diameter width at a predetermined location in a hollow portion of the nozzle tube body, and a through hollow passage having a required inner diameter width is provided. A functioning pipe material is inserted and arranged, and a heat-shrinkable tube of the required length is fitted to a predetermined location where the pipe material is inserted on the outer periphery of the nozzle tube body, and the portion where the heat-shrinkable tube is fitted is heated. A method for producing an ejection nozzle tube, wherein the nozzle tube body is softened, the heat shrinkable tube is contracted, and the heated portion is cooled and solidified.   The method for manufacturing an ejection nozzle pipe according to claim 1 or 2, wherein an outer peripheral surface of the pipe material is subjected to a retaining process.