TWI686562B - Long passage member, plastic container and viscous liquid material discharging apparatus - Google Patents

Abstract

Provides an elongated flow path member, a plastic container, and a viscous material that can be used to join a liquid supply pipe means and an elongated flow path member to improve the conformability of the sealing installation structure, and can completely prevent air from invading the joint portion Liquid discharge device. The elongated flow path member used in the viscous liquid discharge device is constituted as follows: the viscous liquid system in the plastic container is discharged from the elongated flow path member by pressurization. After the discharge operation of the aforementioned viscous liquid, it can be replaced only The aforementioned plastic container. The elongated flow path member has an elongated flow path portion, which is integrally mounted on the upper end mounting portion so as to extend into the plastic container body, and is formed into the viscous liquid when the viscous liquid is discharged under pressure The flow path is formed at least from the side; and the flexible discontinuous flow path portion is formed on at least a part of the outer periphery of the elongated flow path portion.

Description

Long flow path member, plastic container and viscous liquid discharge device

The present invention relates to an elongated flow path member and a plastic container and a viscous liquid discharge device that can be installed in a cassette-shaped plastic container. The cassette-shaped plastic container is capable of curing a viscous liquid, particularly having a moisture-hardening adhesiveness. It is effective when the composition or the curable composition with oxygen-curing adhesiveness is contained in a flexible bag or container, and the bag or container is deformed and reduced by applying pressure from the outside to spit out the viscous liquid inside. use.

Conventionally, in a device in which a viscous liquid such as a moisture-curing adhesive or an oxygen-curing adhesive is discharged and applied, the adhesive hardens when exposed to air, so when the adhesive is scattered, The scattered parts are directly hardened to cause defects such as the formation of pollution, so it is necessary to apply the adhesive without exposing them to air.

Examples of apparatuses for discharging and coating such taboo liquids in contact with air include apparatuses disclosed in Patent Documents 1 to 3.

Such a viscous liquid discharge device, as shown in FIG. 5, is configured to pressurize the elongated flow path member provided in the plastic container 100 102 A device that discharges a viscous liquid such as adhesive from a discharge nozzle via a liquid delivery tube means 104. The plastic container 100 is disposed in the pressurizing tank 106, and pressurized air is supplied into the pressurizing tank 106 through the air supply pipe 108.

The elongated flow path member 102 has an upper end mounting portion 114 for mounting on the opening 112 of the plastic container body 110. An opening end 116 is formed at the lower end of the elongated flow path member 102, and a plurality of flow path holes 118 are formed on the side surface. The viscous liquid 124 passing through the open end 116 or the flow path hole 118 passes through the elongated flow path portion 122 formed inside the elongated cylindrical tube body 120 of the elongated flow path member 102, that is, from the liquid delivery tube means 104 The spitting nozzle spit out with pressure.

In addition, the discharge device is equipped with a so-called cartridge-shaped plastic container. After discharging the viscous liquid, the cartridge-shaped plastic container can replace only the plastic container 100 provided with the elongated flow path member 102. The plastic container 100 is usually transported in a state of being packed in a corrugated cardboard box. The state in which the plastic container 100 is packed in a corrugated cardboard box is called a so-called bag in box.

In addition, the base end portion of the liquid delivery tube means and the upper end mounting portion of the elongated flow path member provided in the plastic container are formed as shown in FIG. 6 and FIG. .

The conventional bonding structure for a viscous liquid discharge device is disclosed in FIGS. 6 and 7. In FIGS. 6 and 7, the conventional joint structure 101 is a structure that is joined in a sealed state by means of sealing installation means 126. The sealing installation means 126 has a fixing member 128. The fixing member 128 has a cylindrical base 132 with a through hole 130 formed in the center, and an annular flange 134 is formed on the lower outer surface of the cylindrical base 132, and the cylindrical base 132 and the annular flange 134 The lower shape is formed with the upper side of the elongated flow path member 102 A shape corresponding to the upper surface of the end mounting portion 114, and a seat stepped portion 136 is formed on the upper surface of the annular flange portion 134, and a male screw portion 138 is formed on the upper outer surface of the cylindrical base 132.

The lower end portion of the cylindrical base 132 is formed with a tapered portion 140 inclined inward. Reference numeral 142 is a cover member with a through hole. A through hole 146 is provided in the central portion of the circular plate 144 to abut on the stepped portion 136 of the seat, and an inner surface of the annular side wall 148 hanging from the peripheral portion of the circular plate 144 A female screw portion 150 is formed on the side, which can be screwed to a male screw portion 112b formed outside the cylindrical side wall 112a of the opening 112 of the plastic container body 110. Reference numeral 152 is a locking member, and has a cylindrical member 156 through which a central hole 154 is inserted in the central portion, and a locking female screw portion 158 is formed at a lower portion of the inner peripheral surface of the cylindrical member 156. As shown in FIG. 7, the upper portion of the center hole 154 of the locking member 152 is gradually tapered toward the upper portion. The through-hole cover member 142 and the locking member 152 are combined in the manner shown in FIG. 7(a).

In addition, as shown in FIG. 6, the elongated flow path portion 122 of the elongated flow path member 102 is provided with a through flow path 159 at the center. In addition, the upper-end mounting portion 114 has an inner peripheral wall 162 forming a liquid discharge port 160 and an outer peripheral wall 166 provided at a position separated from the inner peripheral wall 162 by a support wall 164 at a predetermined interval. The inner diameter of the inner peripheral wall 162 is such that the upper portion has a larger diameter than the lower portion, and at the same time, the upper end surface of the inner peripheral wall forms an inwardly tapered portion 168. The upper end of the outer peripheral wall 166 is bent outward to form an outer peripheral step 170. By fitting the outer peripheral stepped portion 170 to the outer peripheral edge of the opening 112 of the plastic container body 110, the elongated flow path member 102 can be detachably attached to the opening 112. These configurations are detailed in, for example, Patent Document 1.

However, in the traditional joint structure, if there is a long flow When the force by which the path member 102 is inclined, the joint portion joining the liquid supply pipe means 104 and the fixing member 128 of the elongated flow path member 102 is not compliant, so as shown in FIG. 7(b), there is There is a risk of a gap G, and there is a possibility that air enters it.

Secondly, in the above-mentioned discharge device that discharges the viscous liquid in the plastic container by pressurization, as long as a slight gap is generated in the joint portion, etc., the pressurized air in the pressurization tank will enter, so a high degree of airtightness is required Sex. Therefore, compared with, for example, a discharge device that decompresses a plastic container enclosed with a viscous liquid to suck and discharge the viscous liquid from the plastic container, the required airtightness is different.

In this way, in the pressurized discharge device that discharges the viscous liquid by pressurization, in particular, the case where the viscous liquid is a moisture-curing adhesive or an oxygen-curing adhesive, etc., which is a taboo viscous liquid exposed to air Even if a slight amount of air enters the joint part, the air will be mixed into the viscous liquid, and the following trouble cannot be avoided.

When the discharge nozzle is used as a coating nozzle to perform a nozzle coating operation, the air entering the flow path filled with the viscous liquid will cause a discontinuous part of the viscous liquid in the flow path, so the viscosity applied when the discharge nozzle is applied Sexual fluids can cause defects. In addition, in the case of filling the coating cylinder from the discharge nozzle, the air entering the viscous liquid flow path is mixed into the coating cylinder in the form of bubbles.

On the other hand, after the viscous liquid is discharged, a so-called cartridge-type plastic container is required in order to replace the plastic container provided with the elongated flow path member.

[Prior Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Unexamined Patent Publication No. 2012-188167

[Patent Document 2] Japanese Unexamined Patent Publication No. 2012-192343

[Patent Document 3] Japanese Unexamined Patent Publication No. 2012-223715

The present invention was developed in view of the problems of the above-mentioned conventional coating device and other discharge devices, and its purpose is to provide a joint portion for joining the liquid supply pipe means and the elongated flow path member to improve the compliance of the sealing installation structure, and can completely A long flow path member, a plastic container, and a viscous liquid discharge device that prevent air from intruding into the joint portion.

In order to solve the above-mentioned problems, the elongated flow path member of the present invention is used for a viscous liquid discharge device. The elongated flow path member is installed in the opening of the plastic container body so as to extend into the plastic container body. Moreover, a plastic container including an elongated flow path member having an internal through hole in the longitudinal direction is provided in a pressurized tank, and the viscous liquid system in the plastic container is discharged from the elongated flow path member by pressurization. After the discharge operation of the viscous liquid, only the plastic container can be replaced. The elongated flow path member has: an upper end mounting portion, which is installed in the opening portion in a freely detachable manner, and a liquid discharge port is opened in the central portion; A shaped flow path portion is integrally mounted on the upper end mounting portion so as to extend into the inside of the plastic container body, and forms the flow path of the viscous liquid when the viscous liquid is discharged under pressure, and forms a flow at least from the side road; And the flexible discontinuous flow path portion is formed on at least a part of the outer periphery of the elongated flow path portion.

The aforementioned discontinuous flow path portion is preferably constituted by discontinuous and independent plural gap portions.

The discontinuous flow path portion is preferably located closer to the upper end mounting portion side than the center of the elongated flow path member in the longitudinal direction.

The elongated flow path member is preferably a tubular body with one or more flow path holes pierced in the side.

The plastic container of the present invention is a plastic container formed by mounting the elongated flow path member on the body of the plastic container.

The aforementioned viscous liquid is preferably a curable composition having moisture-curable adhesiveness or a curable composition having oxygen-curable adhesiveness.

The viscous liquid discharge device of the present invention includes: a pressurized tank; compressed air supply means for supplying compressed air into the pressurized tank; the plastic container provided in the pressurized tank; and a liquid supply pipe means, one end of which is in communication At the opening of the plastic container; and the spout nozzle means, connected to the other end of the liquid delivery tube means.

According to the present invention, it is possible to provide the conformability of the joint portion of the liquid supply pipe and the elongated flow path member to the sealing installation structure, and it is possible to completely prevent the intrusion of air into the elongated flow path member and the plastic container of the joint portion And viscous liquid spitting device, and has a significant effect.

10A, 10B‧‧‧Long flow path components

12‧‧‧Plastic container body

14‧‧‧ opening

16‧‧‧Internal through hole

18‧‧‧Plastic container

20A, 20B

22A、22B‧‧‧Upper mounting part

23, 23a‧‧‧Flow

24A, 24B‧‧‧Long channel

26A, 26B ‧‧‧ Discontinuous Flow Section

27‧‧‧Open end

28A, 28B‧‧‧Inner peripheral wall

29‧‧‧Plate

30A, 30B‧‧‧support wall

32A, 32B‧‧‧‧Peripheral wall

34‧‧‧Cone

36‧‧‧Peripheral step

38A, 38B‧‧‧Gap

40‧‧‧flow hole

44‧‧‧Joint structure

46‧‧‧Seal installation method

48‧‧‧Annular protrusion

100‧‧‧Traditional plastic container

102‧‧‧Traditional long flow path components

104‧‧‧Liquid delivery means

106‧‧‧Pressure tank

108‧‧‧Air supply pipe

110‧‧‧plastic container body

112‧‧‧Opening

112a‧‧‧Cylinder side wall

112b‧‧‧Male thread part

114‧‧‧Upper mounting part

116‧‧‧Open end

118‧‧‧flow hole

120‧‧‧Long cylindrical tube

122‧‧‧Long channel

124‧‧‧ Viscous liquid

126‧‧‧Seal installation method

128‧‧‧Fixed member

130‧‧‧Pass

132‧‧‧Cylinder base body

134‧‧‧ring flange

136‧‧‧Staircase

138‧‧‧Male thread part

140‧‧‧taper

142‧‧‧With through hole cover member

144‧‧‧round plate

146‧‧‧Through hole

148‧‧‧Annular side wall

150‧‧‧Female thread part

152‧‧‧Locking member

154‧‧‧Center hole

156‧‧‧Cylinder member

158‧‧‧Lock female thread part

159‧‧‧Through the flow path

160‧‧‧Liquid discharge

162‧‧‧Inner peripheral wall

164‧‧‧support wall

166‧‧‧Peripheral wall

168‧‧‧Cone

170‧‧‧Peripheral step

G‧‧‧Gap

FIG. 1 is a schematic perspective view of an embodiment of an elongated flow path member of the present invention.

FIG. 2 is a side explanatory diagram of FIG. 1.

FIGS. 3(a) and (b) are schematic cross-sectional views of a main part of a state where the elongated flow path member of FIG. 1 is attached to a plastic container body and used in a viscous liquid discharge device.

4 is a schematic perspective view of another embodiment of the elongated flow path member of the present invention.

5 is a schematic diagram of a conventional viscous liquid discharge device.

6 is a schematic sectional anatomical view of an embodiment of a conventional joint structure.

7 is a schematic view of a conventional joint structure, in which FIG. 7(a) is a plan view of a combined state of a through-hole cover member and a locking member, and FIG. 7(b) is a long flow path member mounted on a plastic container body to become a sticky This is a schematic cross-sectional view of the bonding structure in the state where the liquid is discharged from the device, and a gap is generated at the bonding portion.

[Forms for carrying out the invention]

Hereinafter, although the embodiments of the present invention will be described based on the drawings, they are merely exemplary, and various modifications can be made as long as they do not deviate from the technical idea of the present invention. In addition, the same components are marked with the same symbols.

In FIGS. 1 to 3, the symbol 10A represents an example of the elongated flow path member of this embodiment. The elongated flow path member 10A of this embodiment is an elongated flow path member used in a viscous liquid discharge device, and is installed on the plastic container body in such a manner as to extend into the plastic container body 12 12 is provided with an opening 14 and a plastic container 18 including an elongated flow path member 10A having an internal through-hole 16 in the longitudinal direction is provided in a pressurizing tank, and the viscous liquid in the plastic container 18 is extended from the The shaped flow path member 10A is discharged, and after the viscous liquid is discharged, only the plastic container 18 can be replaced.

The plastic container body 12 is formed of a flexible plastic material that can be compressed by compression, such as polyethylene or polypropylene, but in terms of flexibility, economy, and ease of forming, soft polyethylene is particularly Suitable for. An opening 14 is defined in the upper part of the plastic container body 12. The plastic container body 12 can be filled with a viscous liquid.

The plastic container body 12 is used in the viscous liquid discharge device shown in FIG. 5. In the case where the plastic container body 12 is filled with the viscous liquid, if pressure is applied from the outside of the plastic container body 12, the plastic container body 12 12 Deforms and shrinks due to pressurization, and finally squashed to act to pressurize and discharge the internal viscous liquid from the opening 14 through the liquid delivery tube means. The liquid delivery pipe is preferably a bent pipe or a straight pipe. Teflon (registered trademark) is the best material for the liquid delivery tube.

For the viscous liquid, a viscosity of 5 to 500 Pa‧s/23°C, preferably 10 to 100 Pa‧s/23°C, and most preferably 15 to 60 Pa‧s/23°C can be used. The viscous liquid is suitable for a hardenable composition with particularly adhesive properties. Examples of the curable composition having adhesiveness include adhesives, sealing materials, potting materials, and the like. The tact free time (TFT) of the viscous liquid is 0 to 60 minutes, preferably 0 to 10 minutes, and more preferably 0 to 3 minutes. In this embodiment, when a viscous liquid having a viscosity and a non-viscous time in the above range is used, compared with a conventional product, a great effect of being difficult to contaminate can be achieved. Adhesive group The product is preferably a room temperature curing type curable composition that can be cured by exposure to air at room temperature, such as a moisture curing type or an oxygen curing type, especially a moisture curing type such as modified silicones, polyurethanes, silicones, etc. Adhesives are more suitable.

In FIG. 3, symbol 44 is a joint structure for a viscous liquid discharge device. The joint structure 44 is a structure that is joined in a sealed state by means of the seal installation means 46. The joint structure 44 is the same as the joint structure of the viscous liquid discharge device shown in FIG. 7(b) except that the elongated flow path member 10A of this embodiment is mounted. Therefore, detailed descriptions other than the elongated flow path member will be omitted.

The elongated flow path member 10A is attached to the opening 14 in a freely detachable manner, and its structure includes: an upper end mounting portion 22A with a liquid discharge port 20A opened in the central portion; and integrally installed so as to extend into the plastic container body 12 An elongated flow path portion 24A that is formed on the upper end portion 22A and forms a flow path of the viscous liquid when the viscous liquid is pressurized and discharged; and a bendable discontinuous formed on at least a portion of the outer periphery of the elongated flow path portion 24A Flow path section 26A. An opening end 27 is formed at the lower end of the elongated flow path member 10A.

Furthermore, the upper-end mounting portion 22A has an inner peripheral wall 28A that forms the flow path of the liquid discharge port 20A; and an outer peripheral wall 32A that is provided at a predetermined distance from the inner peripheral wall 28A by the support wall 30A. As shown in FIG. 3(b), the inner diameter of the inner peripheral wall 28A is larger than the lower portion, and the upper end surface of the inner peripheral wall 28A is formed with a tapered portion 34 inclined inward. The upper end portion of the outer peripheral wall 32A is bent outward to form an outer peripheral stepped portion 36. By fitting the outer peripheral stepped portion 36 to the outer peripheral edge portion of the opening portion 14 of the plastic container body 12, the long flow path member 10A can be installed in a freely detachable manner 于口部14。 The opening 14.

In FIGS. 1 to 3, the discontinuous flow path portion 26A is composed of a plurality of discontinuous and independent gap portions 38A. With this discontinuous flow path portion 26A, particularly as shown in FIG. 2, the elongated flow path member 10A constitutes a bendable form. The discontinuous flow path portion 26A has two regions that connect two gap portions 38A that are provided point-symmetrically with respect to the center of the cross section of the elongated flow channel. The circumferential direction of the channel portion is formed at an angular interval of 180 degrees, and is formed by being shifted 90 degrees from the other two regions in the circumferential direction. The other two regions are in the longitudinal direction of the elongated flow path portion of the two gap portions 38A , Connecting the other two adjacent gaps 38A.

In the illustrated example, the discontinuous flow path portion 26A is configured to be located at the center of the longer flow path member 24A in the longitudinal direction and also on the side of the upper end mounting portion 22A. Since the discontinuous flow path portion 26A is located at the center of the longer flow path member 24A in the longitudinal direction and is closer to the upper end mounting portion 22A side, since the bent portion is installed at the upper end of the longer flow path member 24A at the center in the longitudinal direction. The part 22A has the advantage of better compliance.

In the examples of FIGS. 1 to 3, an example in which the elongated flow path member 10A is a tubular body in which one or more flow path holes 40 are provided on the side is disclosed. In addition, in the vicinity of the upper end portion of the outer peripheral wall 32A of the elongated flow path member 10A, an annular protrusion 48 is provided in order to further improve the sealing performance with the opening 14 of the plastic container body 12.

For the material of the elongated flow path member of this embodiment, plastic materials such as polyethylene or polypropylene can be used, and soft polyethylene is particularly suitable from the viewpoint of flexibility, economy, and ease of molding.

By assembling the plastic container 18 in which the elongated flow path member 10A is attached to the plastic container body 12 into the conventional viscous liquid discharge device shown in FIG. 5, it becomes the viscous liquid discharge device of this embodiment. That is, the viscous liquid discharge device of this embodiment includes: a pressure tank; a compressed air supply means for supplying compressed air in the pressure tank; a plastic container 18 provided in the pressure tank; one end communicating with the plastic container 18 of The liquid delivery tube means of the opening; and the spout nozzle means connected to the other end of the liquid delivery tube means. Among them, for the pressurizing tank, the compressed air supply means, the liquid supply pipe means, and the discharge nozzle means, those applying the viscous liquid discharge coating device contained in Patent Documents 1 to 3 can be applied.

In the viscous liquid discharge device of this embodiment, the sealed communication means as described in Patent Document 3 may be further provided.

Next, an example in which the elongated flow path member of this embodiment is constituted by a non-tubular body is shown in FIG. 4.

In FIG. 4, the elongated flow path member 10B is provided with: an upper end mounting portion 22B which is mounted on the opening 14 in a freely detachable manner, and which has a liquid discharge port 20B in the center; and extends into the plastic container body 12 An elongated flow path portion 24B which is integrally mounted on the upper end mounting portion 22B and forms a flow path 23 of the viscous liquid when the viscous liquid is pressurized and discharged, and forms a flow path at least from the side; and is formed on the elongated flow path At least a part of the outer periphery of the portion 24B is constituted by a flexible discontinuous flow path portion 26B. In the elongated flow path member 10B, the flow path 23 is formed by forming a cross through the plate-shaped body 29.

In FIG. 4, the discontinuous flow path portion 26B is composed of a plurality of discontinuous and independent gap portions 38B. With the discontinuous flow path portion 26B, the elongated flow path member 10B is formed to be bendable.

In the illustrated example, the discontinuous flow path portion 26B is located at the center of the longer flow path member 24B in the longitudinal direction and further to the upper end mounting portion 22B side. By positioning the discontinuous flow path portion 26B at the center in the longitudinal direction of the longer flow path member 24B and also on the side of the upper end mounting portion 22B, the bent portion is positioned at the center in the longitudinal direction of the longer flow path member 24B It is also on the side of the upper end mounting portion 22B, so it has the advantage of good compliance.

The material of the elongated flow path member 24B can be the same as the above-mentioned elongated flow path member 24A.

Furthermore, the upper-end mounting portion 22B has an inner peripheral wall 28B forming the flow path 23a of the liquid discharge port 20B; and an outer peripheral wall 32B provided at a predetermined distance from the inner peripheral wall 28B by the support wall 30B. The inner peripheral wall 28B of the flow path 23a provided in the upper end mounting portion 22B forming the liquid discharge port 20B is cylindrical. In addition, the inner diameter of the inner peripheral wall 28B is larger than the lower portion, and the upper end surface of the inner peripheral wall 28B is inclined inward to form a tapered portion 34.

The upper end of the outer peripheral wall 32B is bent outward to form an outer peripheral step 36. By fitting the outer peripheral stepped portion 36 to the outer peripheral edge portion of the opening portion 14 of the plastic container body 12, the elongated flow path member 10B can be detachably attached to the opening portion 14. In addition, in the vicinity of the upper end portion of the outer peripheral wall 32B of the elongated flow path member 10B, an annular protrusion (not shown) is provided in order to improve the sealing performance with the opening 14 of the plastic container body 12.

Such an elongated flow path member 10B is also assembled into the conventional viscous liquid discharge device shown in FIG. 5 as described above, thereby constituting the viscous liquid discharge device of this embodiment. The plastic container of this embodiment is suitable for transportation in a state of being packed in a corrugated cardboard box.

10A‧‧‧Long flow path component

20A‧‧‧Liquid spit outlet

22A‧‧‧Upper mounting part

24A‧‧‧Long channel

26A‧‧‧Discontinuous Flow Section

27‧‧‧Open end

28A‧‧‧Inner peripheral wall

30A‧‧‧support wall

32A‧‧‧Peripheral wall

34‧‧‧Cone

36‧‧‧Peripheral step

38A‧‧‧Gap

40‧‧‧flow hole

Claims (8)

An elongated flow path member is used for a viscous liquid discharge device. The elongated flow path member is installed in the opening of the plastic container body in a manner extending into the interior of the plastic container body, and includes an interior with a longitudinal direction The plastic container of the elongated flow path member of the through hole is provided in the pressurizing tank, and the viscous liquid system in the plastic container is discharged from the elongated flow path member by pressurization, and the viscous liquid is discharged during the operation After that, only the plastic container can be replaced. The elongated flow path member has: an upper end mounting portion, which is detachably mounted on the opening portion, and a liquid discharge port is opened in the central portion; the elongated flow path portion is used to Extending to the inside of the plastic container body and integrally mounted on the upper end mounting portion, and forming the flow path of the viscous liquid when the viscous liquid is discharged under pressure; and the discontinuous flow path portion formed in the elongated shape At least a portion of the outer periphery of the flow path portion is bendable and has a plurality of discontinuous and independent gap portions, the discontinuous flow path portion has two regions, and the two regions are relative to the elongated channel The center of the cross-section of the cross-section is connected by two gaps that are point-symmetrically provided. The two regions are formed at an angular interval of 180 degrees in the circumferential direction of the elongated flow path portion, and are circumferentially offset from the other two regions by 90 The other two regions are connected to the other two adjacent gaps in the longitudinal direction of the elongated flow path part of the two gaps. The elongated flow path member according to claim 1, wherein the aforementioned discontinuous flow path portion It is composed of a plurality of discontinuous and independent gaps. The elongated flow path member according to claim 1, wherein the discontinuous flow path portion is located closer to the upper end mounting portion side than the center of the elongated flow path member in the longitudinal direction. The elongated flow path member according to claim 2, wherein the discontinuous flow path portion is located closer to the upper end mounting portion side than the center of the elongated flow path member in the longitudinal direction. The elongated flow path member according to any one of claims 1 to 4, wherein the elongated flow path member is a tubular body provided with one or more flow path holes on its side. A plastic container is formed by installing the elongated flow path member of any one of claims 1 to 5 on the body of the plastic container. The plastic container according to claim 6, wherein the viscous liquid is a curable composition having moisture-curable adhesiveness or an oxygen-curable adhesiveness. A viscous liquid discharge device, comprising: a pressurized tank; compressed air supply means for supplying compressed air into the aforementioned pressurized tank; as described in claim 6 or 7, the plastic container is provided in the aforementioned pressurized tank; The liquid pipe means has one end connected to the opening of the plastic container; and the spout nozzle means is connected to the other end of the liquid delivery pipe means.

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