CN211520331U

CN211520331U - Flexible pipe container formed by multi-layer co-extrusion once

Info

Publication number: CN211520331U
Application number: CN201922074512.3U
Authority: CN
Inventors: 王铭源; 颜家军; 王南杰
Original assignee: Shenzhen Dechangyu Plastic Products Co ltd
Current assignee: Shenzhen Dechangyu New Material Technology Co ltd
Priority date: 2019-11-22
Filing date: 2019-11-22
Publication date: 2020-09-18
Anticipated expiration: 2029-11-22

Abstract

The utility model is suitable for a hose container field provides a hose container by multilayer coextrusion one shot forming, including inner tube, outer tube and connector, the inner tube with the outer tube adopts multilayer coextrusion mode to make to take shape after peeling off separately skin and inlayer and become outer tube and inner tube, the inner tube is located in the outer tube, the inner tube has the inner chamber that is used for the holding material, the inner tube with the outer tube all with the connector is connected, the connector has the intercommunication inner chamber and external discharge opening. The pipe wall of the outer pipe is provided with a vent hole communicated with the outside, so that air flows into the space between the inner pipe and the outer pipe, and the outer pipe can keep the original shape. The utility model provides a convenient to use's hose container who once takes shape by multilayer coextrusion can effective reduction in production cost.

Description

Flexible pipe container formed by multi-layer co-extrusion once

Technical Field

The utility model belongs to the hose container field especially relates to a hose container who once takes shape by multilayer coextrusion.

Background

The soft and non-rebounding inner tube or inner bag is arranged in the plastic hose container, so that the paste in the tube can be more smoothly and easily extruded, and the original appearance of the hose container can be kept from deformation caused by the reduction of the storage amount of the used contents. In the existing hose container with the structure, such as US3936334 and US20030015549, the inner pipe and the outer pipe are respectively manufactured and then assembled, the production process is complex, and the production cost is high. As disclosed in US7641078, a flexible packaging container with an inner bag is disclosed, which comprises a package body C having a vent hole, a container a with a liquid outlet, an inner bag B and a lid D. The production and processing procedures corresponding to the structure are as follows: firstly, the container A and the soft bag B are welded together, and are extruded and formed into a sleeve, and the sleeve is sleeved on the outer sides of the container A and the soft bag B to form a cone frustum-shaped shoulder (c4) which is welded on the container A. And pressing and welding the other end of the sleeve to form a packaging body C. The cover D is screwed on the container A. As can be seen from the above steps, the production of the device requires at least four separate parts production steps, two welding steps between the three parts of the container A, the soft bag B and the package C and one screwing step of the lid D to the container A. And because the inner bag has been through the back cover, can only fill the content from the liquid outlet, can not use the general hose to fill the apparatus of sealing the tail and fill the content, thus has increased the expense of using.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to at least one of the problems of the prior art or the related art.

One of the purposes of the utility model is: a hose container formed at one time by multi-layer co-extrusion is provided, aiming at reducing the production cost.

The utility model provides a hose container by once taking shape of multilayer coextrusion, includes inner tube, outer tube and connector, the inner tube with the outer tube adopts multilayer coextrusion mode to make to take shape the back and peels off separately inlayer and skin become the inner tube with the outer tube, the inner tube is located in the outer tube, the inner tube has the inner chamber that is used for holding the material, the inner tube with the outer tube all with the connector is connected, the connector has the intercommunication inner chamber and external discharge opening.

Further, the inner tube is made of a flexible material, and the outer tube is made of an elastic material;

the outer pipe is provided with a vent hole which penetrates through the outside on the pipe wall.

Further, the inner tube is made of plastic or plastic elastomer material (Plastics or thermoplastic elastomer).

Further, the inner tube wall thickness is less than or equal to 0.20 mm.

Further, the outer tube is made of a hard/rigid material (polyoefins or PET).

Further, the thickness of the outer tube wall is more than 0.20 mm.

Further, the diameter of the vent hole is 1.0-5.0 mm.

Further, the inner tube with the outer tube all with the connector butt fusion.

Further, the multi-layer co-extrusion one-step formed hose container can be matched with a universal pump head for use, so that quantitative liquid outlet is realized, and the outer pipe keeps the shape unchanged after the material is emptied.

Further, the inner tube and the outer tube deviate from the end part of the connector is subjected to tail sealing welding.

The utility model provides a by the once-through flexible pipe container of multilayer coextrusion's beneficial effect lie in: the production cost can be effectively reduced, the structure is simplified, and the convenience of operation is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is an elevation view of a multi-layer co-extruded, one-shot formed hose container according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of the structure of FIG. 1 when the inner tube is filled with material;

FIG. 3 is a cross-sectional view of the structure of FIG. 1 when the inner tube is compressed;

fig. 4 is a schematic view, in perspective, of a multi-layer co-extrusion one-step formed hose container and pump head according to an embodiment of the present invention.

Description of reference numerals:

reference numerals	Name (R)	Reference numerals	Name (R)
				10	Inner pipe	30	Connecting head
13	Outer cavity	311	Discharge hole
				20	Outer tube	40	Material(s)
21	Vent hole	50	Pump head

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It should be noted that the terms of left, right, upper and lower directions in the embodiments of the present invention are only relative concepts or are referred to the normal use state of the product, and should not be considered as limiting.

Referring to fig. 1 to 3, the multi-layer co-extrusion one-step formed hose container includes an inner tube 10, an outer tube 20, and a connection head 30.

The structural and positional relationships among the inner tube 10, the outer tube 20 and the connecting head 30 are as follows: the inner tube 10 is located in the outer tube 20, the inner tube 10 has an inner cavity for containing the material 40, the inner tube 10 and the outer tube 20 are both connected with the connector 30, and the connector 30 has a discharge hole 311 communicating the inner cavity and the outside.

The inner tube 10 and the outer tube 20 are manufactured by multi-layer coextrusion and then the outer layer and the inner layer are peeled apart after forming to form the inner tube 10 and the outer tube 20.

The present example provides a hose container formed at one time by multi-layer coextrusion, which can achieve the following analysis: the inner pipe 10 and the outer pipe 20 are manufactured and formed in a multi-layer co-extrusion forming mode, and then the outer layer and the inner layer are peeled off and separated to form the outer pipe 20 and the inner pipe 10, so that the production steps of parts are reduced, then the inner pipe 10 and the outer pipe 20 are connected with the connector 30, the inner pipe 10 and the outer pipe 20 are simultaneously connected with the connector 30 in a forming mode, the inner pipe 10 and the outer pipe 20 share the connector 30, and the processing steps are simplified. Therefore, the hose container formed by multilayer coextrusion in one step provided by the embodiment can reduce the production processing steps, improve the production efficiency and reduce the production cost.

The step of sealing the tail of the tube-in-tube and the step of filling are carried out simultaneously. In this embodiment, the extrusion molding comes out outer tube 20 and inner tube 10 (intraductal have a pipe), and connector 30 welds with a tip of outer tube 20 and inner tube 10 simultaneously, and then the machine that adopts tail end filling to seal the tail from outer tube 20 and the other end (tail end) portion filling material 40 of inner tube 10 and accomplish simultaneously and seal the tail in the pipe that will weld there is connector 30. That is to say, the utility model discloses by the once-through flexible pipe container of multilayer coextrusion fill material 40 from the tail end, be different from US3936334, US20030015549 the container needs seal the tail end of container earlier, and then will seal the container of afterbody and carry out the equipment of filling from the discharge gate portion with the dedicated container that carries out the filling. Compare in needs and seal the tail earlier, then carry out the filling of material 40 from the discharge gate again, the utility model discloses the hose container who once takes shape by multilayer coextrusion operates more convenient high-efficient to be favorable to reduction in production cost.

In this embodiment, the inner tube 10 is made of a flexible material, and the outer tube 20 is made of an elastic material to have elasticity.

The outer tube 20 has a through-hole 21 formed in the wall thereof. When the material extruding device is used, a person manually closes the vent hole 21 and presses the outer pipe 20 inwards, the outer pipe 20 generates elastic deformation, and the outer pipe 20 presses the inner pipe 10 to enable the inner pipe 10 to contract inwards, so that the material 40 in the inner pipe 10 is extruded out from the discharge hole 311. The outer tube 20 is then released by the human hand and the inner tube 10 maintains its compressed configuration. The external air enters the space (outer chamber 13) between the outer tube 20 and the inner tube 10 through the vent holes 21, and the outer tube 20 is restored to its original shape by the elastic restoring force. The next time the outer tube 20 is pressed by the human hand, the inner tube 10 is further compressed to express the material 40. The pressing and releasing operation is repeated by human hand, so that the inner tube 10 is continuously compressed inwards to continuously extrude the material 40 in the inner cavity.

The inner tube 10 is made of a flexible material, which is easily deformed by an external force without being damaged. The flexible material includes a material having no elasticity and a material having low resilience. Rebound resilience refers to the ability of an object to quickly recover its original shape after the external force causing the deformation of the object is removed. The inner tube 10 is made of a flexible material, the resilience of the inner tube 10 depending on the material itself and the thickness of the tube wall. In the present embodiment, the inner tube 10 is required to maintain its compressed form without springback after being deformed by pressure. The adoption does not have the requirement of elastic material can satisfy this scheme. The adoption of a material with low resilience and the control of the thickness thereof make the resilience of the inner tube 10 after being deformed under pressure very small and even difficult to distinguish by naked eyes, and the content covered by the scheme should also be regarded as the content covered by the scheme.

In the present embodiment, the material of the inner tube 10 and the outer tube 20 is optimally selected.

The inner tube 10 is made of a plastic or plastic elastomer material (Plastics or Thermoplastic elastomer). The inner tube 10 and the outer tube 20 are non-sticky, can be peeled apart, and are soft and non-resilient.

Preferably, the inner tube 10 has a tube wall thickness of less than or equal to 0.2 mm. The size is selected primarily in consideration of the thickness of the material of the inner tube 10 in relation to the resilience, which is worse with smaller thicknesses of the thermoplastic elastomer. Of course, the wall thickness of the inner tube 10 also needs to take into account other properties of the material (e.g., tear resistance) and process requirements. After many experiments, plastic or plastic elastomer (plastic or Thermoplastic elastomer) materials are selected, the wall thickness of the inner tube 10 is controlled to be below 0.2 mm, and the inner tube 10 hardly rebounds. One skilled in the art can also set the wall thickness of the inner tube 10 to 0.13 mm, 0.1 mm, 0.08 mm, etc.

The outer tube 20 is made of an elastic material, and the outer tube 20 can be elastically deformed under the action of an external force and can be restored to an original shape after the external force disappears.

Preferably, the outer tube 20 is made of a hard/rigid material (polyoefins or PET).

The skilled person may further select the material of the outer tube 20 to be preferably HDPE (high density polyethylene), PP (polypropylene) material.

The outer tube 20 is made of HDPE (polyethylene), PP (polypropylene) or PET (polyethylene terephthalate) resin, which has good mechanical properties and low material cost.

The outer tube 20 has a tube wall thickness of not less than 0.2 mm. The thickness dimension is selected primarily for material thickness and resiliency. The greater the thickness, the better the resilience, for the same elastic material. Through many experiments, when the outer tube 20 is made of HDPE, PP or PET, and the thickness of the tube wall of the outer tube 20 is greater than or equal to 0.2 mm, the outer tube 20 can meet the requirement of returning to the original shape after the external force is removed. Those skilled in the art can also optimize the wall thickness of the outer tube 20 to be 0.22 mm, 0.25 mm, 0.3 mm, 0.35 mm, etc.

In this embodiment, the aperture of the vent hole 21 is preferably 1.0 to 5.0 mm. Regarding the position of the vent hole 21, a person skilled in the art can preferably select the abutting area of the thumb and the outer tube 20 when the outer tube 20 is held by a human hand, so as to facilitate the operation of the human hand.

Referring to fig. 4, the multi-layer co-extrusion one-step formed hose container provided in this embodiment can be used with a universal pump head 50 to discharge liquid quantitatively, and the outer tube 20 maintains its shape after the material 40 is emptied. Specifically, the pump head 50 is connected to the connector 30, preferably, screwed. The operator presses the pump head 50 downwards, and the material 40 in the inner tube 10 is discharged through the discharge hole 311 under the action of the pump head 50. At this time, the inner tube 10 contracts under negative pressure. The external air enters the outer chamber 13 through the vent hole 21 to fill the space where the inner tube 10 is contracted, while the outer tube 20 is left as it is. One skilled in the art will appreciate that the amount of compression is fixed each time the pump head 50 is depressed to the end, i.e., the pump head 50 ensures a constant volume of fluid.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the present invention.

Claims

1. The hose container formed by multiple layers of co-extrusion at one time is characterized by comprising an inner pipe, an outer pipe and a connector, wherein the inner pipe and the outer pipe are manufactured and formed in a multiple-layer co-extrusion mode, the inner layer and the outer layer are separated by stripping, so that the inner pipe and the outer pipe are formed, the inner pipe is positioned in the outer pipe, the inner pipe is provided with an inner cavity for containing materials, the inner pipe and the outer pipe are connected with the connector, and the connector is provided with a discharge hole for communicating the inner cavity with the outside.

2. A multi-layer co-extrusion one-shot formed hose container according to claim 1, wherein the inner tube is made of a flexible material and the outer tube is made of an elastic material;

3. A multi-layer co-extrusion one-shot formed hose container according to claim 2, wherein the inner tube is made of a plastic material.

4. A multi-layer co-extrusion once-formed flexible tube container as claimed in claim 3, wherein said inner tube has a tube wall thickness of 0.20 mm or less.

5. A multi-layer co-extrusion one-shot formed hose container according to claim 2, wherein the outer tube is made of a hard/rigid material.

6. A flexible tube container once formed by multi-layer co-extrusion as claimed in claim 5, wherein the outer tube has a wall thickness of more than 0.20 mm.

7. A multi-layer co-extrusion one-shot formed hose container according to claim 2, wherein the diameter of the vent hole is 1.0 to 5.0 mm.

8. A multi-layer co-extrusion one-shot hose container according to any one of claims 1 to 7, wherein the inner tube and the outer tube are both welded to the connection head.

9. The multi-layer co-extrusion one-shot hose container according to claim 8, wherein the multi-layer co-extrusion one-shot hose container is capable of being used with a general pump head to achieve a quantitative discharge of liquid, and the outer tube maintains its shape after the material is discharged.