CN111923372A

CN111923372A - Plastic hose preparation method and hose

Info

Publication number: CN111923372A
Application number: CN202010939819.XA
Authority: CN
Inventors: 徐运龙; 王明生; 刘健
Original assignee: Rego Packing Gz Industry Co ltd
Current assignee: Rego Packing Gz Industry Co ltd
Priority date: 2020-09-09
Filing date: 2020-09-09
Publication date: 2020-11-13

Abstract

The embodiment of the application provides a plastic hose and a preparation method thereof, and relates to the technical field of plastic products. The plastic hose comprises a hose body and a hose shoulder, wherein one end of the hose shoulder is provided with a hollow opening, the other end of the hose shoulder is matched with the caliber of the hose body, and the preparation method of the plastic hose comprises the following steps: heating preset thermoplastic plastics to enable the preset thermoplastic plastics to be in a softened state and form a tubular thermoplastic plastic blank; placing the tubular thermoplastic plastic blank in a softened state into a preset mold; and introducing compressed air into the preset mold to deform the tubular thermoplastic plastic blank along the cavity of the preset mold so as to form the tube body and the tube shoulder of the plastic hose. The hose manufactured by the plastic hose manufacturing method can realize the technical effects of recycling, improving the environmental protection and reducing the production cost.

Description

Plastic hose preparation method and hose

Technical Field

The application relates to the technical field of plastic products, in particular to a plastic hose and a preparation method thereof.

Background

The prior toothpaste tube or cosmetic tube and the like mainly comprise a tube body, a tube shoulder and a tube cap; wherein, the tube body of the hose is mainly an aluminum-plastic sheet, a full-plastic sheet, a barrier-free spacer and the like, and cannot be directly recycled; the pipe shoulder and the pipe cap of the hose are mainly made of high-density polyethylene at present, and the pipe cap is made of polypropylene and cannot be recycled; in the prior art, the attention degree on environment-friendly materials is higher and higher, the requirements on degradable materials, reusable materials and recyclable materials are higher and higher, and if hoses such as toothpaste tubes/cosmetic tubes cannot be recycled, the hoses can only become wastes, so that certain harm is caused to the environment protection of the whole society.

Disclosure of Invention

The embodiment of the application aims to provide a plastic hose preparation method and a hose, which can achieve the technical effects of recycling, improving environmental protection and reducing production cost.

In a first aspect, an embodiment of the present application provides a method for preparing a plastic hose, where the plastic hose includes a hose body and a hose shoulder, one end of the hose shoulder has a hollow opening, and the other end of the hose shoulder matches with an aperture of the hose body, and the method includes:

heating preset thermoplastic plastics to enable the preset thermoplastic plastics to be in a softened state and form a tubular thermoplastic plastic blank;

placing the tubular thermoplastic plastic blank in a softened state into a preset mold;

and introducing compressed air into the preset mold to deform the tubular thermoplastic plastic blank along the cavity of the preset mold so as to form the tube body and the tube shoulder of the plastic hose.

In the implementation process, the plastic hose is prepared by adopting recyclable preset thermoplastic plastics, the material is single, for example, the plastic hose can be prepared by adopting single materials such as polyester, high-density polyethylene, polypropylene and the like by a hollow blow molding method, and a pipe body and a pipe shoulder of the plastic hose or a pipe body is formed at one time and then welded with the pipe shoulder; the preparation method of the plastic hose can replace the existing extrusion compounding process and hose manufacturing process, and the hose body and the hose shoulder of the plastic hose are prepared from single materials, so that the plastic hose can enter a recovery flow to realize recovery and use; therefore, the hose manufactured by the plastic hose manufacturing method can achieve the technical effects of recycling, improving the environmental protection and reducing the production cost.

Further, the predetermined thermoplastic comprises polyester.

In the above-mentioned realization, the polyester is a general term for a polymer obtained by polycondensation of a polyhydric alcohol and a polybasic acid.

Further, the predetermined thermoplastic comprises high density polyethylene.

In the above implementation, the High Density Polyethylene (HDPE) is a white powder or granular product.

Further, the predetermined thermoplastic comprises polypropylene.

In the above implementation, the polypropylene is a polymer obtained by addition polymerization of propylene.

Further, the pipe body is welded with the pipe shoulder.

In the implementation process, the pipe body and the pipe shoulder of the plastic hose are respectively molded, and then the pipe body and the pipe shoulder are welded and seamed together through a welding process to jointly form a main body of the plastic hose.

Further, the hollow opening of the pipe shoulder is smaller than the caliber of the pipe body.

In the implementation process, the hollow opening of the tube shoulder is smaller than the caliber of the tube body, so that the opening of the plastic hose is smaller than the tube diameter, and the plastic hose is conveniently prepared into a toothpaste tube, a cosmetic tube and the like.

Further, the plastic hose also comprises a pipe cap, and the pipe cap is made of the same material as the pipe body and the pipe shoulder.

In the implementation process, the pipe cap can be prepared by adopting the same process as the pipe body and the pipe shoulder, namely, a hollow blow molding process is adopted for preparation; it should be noted that the pipe cap is made of the same material as the pipe body and the pipe shoulder, so that the plastic hose is integrally made of a single material, and the plastic hose is convenient to recycle.

Further, the pipe cap is provided with a groove, and the groove is embedded with the hollow opening of the pipe shoulder.

In the implementation process, the pipe cap and the pipe shoulder can be embedded, so that the pipe cap can seal the opening of the pipe shoulder, and the inside of the plastic hose is isolated from the external environment; optionally, a thread or a fastening mechanism can be arranged in the groove of the pipe cap, and the pipe cap is matched with the pipe shoulder, so that the pipe cap is convenient to use.

Further, the preset die is a female die, and the inner wall of the female die is the same as the tube body of the plastic hose in shape.

In the implementation process, the hollow blow molding die only has a female die (female die), and compared with injection molding, the hollow blow molding die has the advantages of lower equipment cost, stronger adaptability, good molding performance (such as low stress) and capability of molding a product with a complex undulating curve (shape); the inner wall of the female mold is identical to the shape of the body of the plastic hose, so that the tubular thermoplastic blank is finally prepared into the desired shape.

In a second aspect, embodiments of the present application provide a hose made by the method of making a plastic hose according to any one of the first aspect.

Additional features and advantages of the disclosure will be set forth in the description which follows, or in part may be learned by the practice of the above-described techniques of the disclosure, or may be learned by practice of the disclosure.

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.

Fig. 1 is a schematic flow chart of a method for manufacturing a plastic hose according to an embodiment of the present disclosure;

FIG. 2 is a schematic flow chart of another method for manufacturing a plastic hose according to an embodiment of the present disclosure;

fig. 3 is a schematic structural view of a plastic hose according to an embodiment of the present disclosure.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.

In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or a point connection; either directly or indirectly through intervening media, or may be an internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "first," "second," and the like, are used primarily to distinguish one device, element, or component from another (the specific nature and configuration may be the same or different), and are not used to indicate or imply the relative importance or number of the indicated devices, elements, or components. "plurality" means two or more unless otherwise specified.

The embodiment of the application provides a preparation method of a plastic hose and the hose, which can be applied to hose packaging, such as hose packaging of toothpaste or cosmetics; the plastic hose is prepared by adopting recyclable preset thermoplastic plastics and a single material, for example, the plastic hose can be prepared by adopting a single material such as polyester, high-density polyethylene, polypropylene and the like by a hollow blow molding method, and a hose body and a hose shoulder of the plastic hose are formed at one time, or the hose body is formed at one time and then welded with the hose shoulder; the preparation method of the plastic hose can replace the existing extrusion and compounding technology and hose manufacturing technology, and the hose body and the hose shoulder of the plastic hose are made of single materials, so that the plastic hose can enter a recycling flow to realize recycling, and the hose manufactured by the preparation method of the plastic hose can realize the technical effects of recycling, improving environmental protection and reducing production cost.

Referring to fig. 1, fig. 1 is a schematic flow chart of a method for manufacturing a plastic hose according to an embodiment of the present disclosure.

Illustratively, the plastic hose comprises a hose body and a hose shoulder, wherein one end of the hose shoulder is provided with a hollow opening, and the other end of the hose shoulder is matched with the caliber of the hose body, and the preparation method of the plastic hose comprises the following steps:

s100: heating the predetermined thermoplastic to soften the predetermined thermoplastic and form a tubular thermoplastic blank.

Thermoplastic is illustratively a type of plastic that is plastic at a temperature, solidifies upon cooling, and can repeat this process. The molecular structure is characterized by linear macromolecular compounds, generally has no active groups, and does not generate linear intermolecular crosslinking when heated. The waste products can be processed into new products after being recovered, and the main products include polyolefins (vinyl, olefin, styrene, acrylate, fluorine-containing olefin, etc.), celluloses, polyether polyesters, aromatic heterocyclic polymers, etc.

For example, thermoplastics can be classified into general plastics, engineering plastics, special plastics, and the like according to performance characteristics, versatility of use, versatility of molding techniques, and the like. The general plastic has the main characteristics that: wide application, convenient processing and good comprehensive performance. Such as Polyethylene (PE), polyvinyl chloride (PVC), polypropylene (PP), Polystyrene (PS), acrylonitrile-butadiene-styrene (ABS) are also commonly referred to as "five-piece general purpose plastics". The engineering plastic and the special plastic are characterized in that: some structures and performances of the high polymer are particularly outstanding, or the forming processing technology is difficult, and the like, and the high polymer is often applied to professional engineering or special fields and occasions. The main engineering plastics are: nylon (Nylon), Polycarbonate (PC), Polyurethane (PU), polytetrafluoroethylene (teflon, PTFE), polyethylene terephthalate (PET), and the like.

In some embodiments, the thermoplastics employed in the examples of the present application include: polyester, high density polyethylene or polypropylene; it should be noted that the thermoplastics used in the examples of the present application are all single materials.

S200: and putting the tubular thermoplastic plastic blank in the softened state into a preset mold.

For example, when the tubular thermoplastic plastic blank in a softened state is placed in the pre-mold, the tubular thermoplastic plastic blank may be spread along the inner wall of the pre-mold, so that the tubular thermoplastic plastic blank may be formed into a desired hose shape.

S300: and introducing compressed air into the preset mold to deform the tubular thermoplastic plastic blank along the cavity of the preset mold so as to form the tube body and the tube shoulder of the plastic hose.

Illustratively, when compressed air is introduced into the preset mold, the tubular thermoplastic plastic blank is continuously expanded under the action of the air, so that the tubular thermoplastic plastic blank is deformed along the cavity of the preset mold, and finally the tubular thermoplastic plastic blank is formed into the shape of the inner wall of the preset mold; in the process, the tube body and the tube shoulder of the plastic hose can be formed in one step or can be formed separately, and then the tube body and the tube shoulder are sewn together in a welding mode.

In some embodiments, hollow blow molding (also referred to as blow molding) is a method of forming a hollow article by blowing a hot-melt parison closed in a mold by means of gas pressure, in which a tubular thermoplastic plastic parison extruded from an extruder and still in a softened state is placed in a forming mold, and then compressed air is introduced to deform the parison along the cavity by the pressure of the air, thereby blowing a hollow article having a short neck opening. Blow molding is widely used to produce various hollow articles in the form of thin shells, packaging containers for chemical and daily use, toys for children, and the like. Blow molding, also known as blow molding, is a method of forming a hollow article by blowing a hot-melt-shaped parison closed in a mold with the aid of gas pressure, is the third most common plastic processing method, and is also a plastic molding method that is developed faster.

Illustratively, blow molding is performed by placing a tubular thermoplastic parison extruded from an extruder while in a softened state in a mold, and introducing compressed air to deform the parison along the cavity by the pressure of the air, thereby blowing a hollow article having a short neck.

For example, blow molding is widely used at present for producing various hollow articles in the form of a thin shell, chemical engineering, daily packaging containers, and the like.

For example, the only pre-mold for blow molding is a female mold (female mold), which has lower equipment cost, stronger adaptability, better formability (e.g., low stress) and can form an article with a complex undulating curve (shape) compared with injection molding. Blow molding enters a widely used stage where blow-molding grade plastics include: polyolefins, engineering plastics and elastomers; the application of the blow molding product relates to the aspects of automobiles, office equipment, household appliances, medical treatment and the like; can produce 6 ten thousand bottles per hour and can also manufacture large blow-molded parts (the weight of the parts is up to 180kg), and the multilayer blow-molding technology is greatly developed; the blow molding equipment adopts a closed-loop control system of a microcomputer and solid-state electronics, and the CAE/CAM technology of the computer is mature day by day; and the blow molding machine is more specialized and distinctive.

In some implementation scenarios, the plastic hose is prepared by using a preset thermoplastic, which is a single material, for example, a single material such as polyester/high density polyethylene/polypropylene, and is prepared by using a hollow blow molding method, so as to form the tube body and the tube shoulder of the plastic hose in one step, or form the tube body in one step, and then weld the tube body and the tube shoulder; the preparation method of the plastic hose can replace the existing extrusion composite technology and hose manufacturing technology, and because the hose body and the hose shoulder of the plastic hose are prepared from single materials, and the single materials such as polyester, high-density polyethylene, polypropylene and the like are recyclable materials, the recyclable materials can enter a recycling flow to realize recycling and can be used for manufacturing the plastic hose again; therefore, the plastic hose manufactured by the preparation method of the plastic hose can realize the technical effects of recycling, improving the environmental protection and reducing the production cost.

In some embodiments, the predetermined thermoplastic comprises a polyester.

Illustratively, polyesters, polymers obtained by polycondensation of polyhydric alcohols and polybasic acids, are collectively referred to as "polyesters". Mainly polyethylene terephthalate (PET), and conventionally includes linear thermoplastic resins such as polybutylene terephthalate (PBT) and polyarylate. Is an engineering plastic with excellent performance and wide application. It can also be made into polyester fiber and polyester film. Polyesters include polyester resins and polyester elastomers. The polyester resin further includes polyethylene terephthalate (PET), polybutylene terephthalate (PBT), Polyarylate (PAR), and the like. Polyester elastomers (TPEE) are generally polymerized from dimethyl terephthalate, 1, 4-butanediol and polybutanol, and the segment comprising a hard segment portion and a soft segment portion is a thermoplastic elastomer.

In some embodiments, the predetermined thermoplastic comprises high density polyethylene.

Illustratively, the High Density Polyethylene (HDPE) is a white powder or granular product. No toxicity and no smell, the crystallinity is 80-90%, the softening point is 125-l 35 ℃, and the use temperature can reach 100 ℃; the hardness, tensile strength and creep property are better than those of low-density polyethylene; the wear resistance, the electrical insulation, the toughness and the cold resistance are good; the chemical stability is good, and the paint is not dissolved in any organic solvent at room temperature, and is resistant to corrosion of acid, alkali and various salts; the film has small permeability to water vapor and air and low water absorption; the aging resistance is poor, the environmental stress cracking resistance is inferior to that of low density polyethylene, and the performance is reduced by thermal oxidation, so that an antioxidant, an ultraviolet absorber and the like are added into the resin to overcome the defects.

In some embodiments, the predetermined thermoplastic comprises polypropylene.

Illustratively, polypropylene is a polymer resulting from the addition polymerization of propylene. Is white wax-like material, and has transparent and light appearance. The density is 0.89-0.91 g/cm3, the flame retardant is flammable, the melting point is 165 ℃, the softening temperature is about 155 ℃, and the use temperature range is-30-140 ℃. Can resist corrosion of acid, alkali, salt solution and various organic solvents at the temperature of below 80 ℃, and can be decomposed at high temperature and under the action of oxidation. The polypropylene is widely applied to the production of fiber products such as clothes, blankets and the like, medical instruments, automobiles, bicycles, parts, conveying pipelines, chemical containers and the like, and is also used for packaging foods and medicines.

Referring to fig. 2, fig. 2 is a schematic flow chart of another method for manufacturing a plastic hose according to an embodiment of the present application, where the method for manufacturing a plastic hose includes the following steps:

S400: the pipe body is welded with the pipe shoulder.

It should be understood that steps S100, S200, and S300 have been described in detail above, and are not repeated herein to avoid repetition.

Illustratively, the tube body and the tube shoulder of the plastic hose are formed separately, and then welded and seamed together by a welding process to constitute the main body of the plastic hose.

Plastic welding, for example, refers to a joining method in which two plastic parts are joined together by fusing the contacting surfaces of the two plastic parts simultaneously by heating. It is only suitable for thermoplastic plastic connection, and welding with or without welding rod can be used. When the welding rod is used, the end face of the end to be welded is required to be manufactured into a joint with a fixed shape (such as a U shape, an X shape and the like), the molten body of the welding rod is dripped into the joint, and the two parts to be welded are connected into a whole; when no welding rod is used, the welding surface is heated to melt, and then vertical pressure is applied to the welded surface until the welded surface is tightly fused into a whole.

It should be noted that when the tube body and the tube shoulder of the plastic hose are formed separately, the material of the tube body and the material of the tube shoulder are the same.

In some embodiments, the hollow opening of the tube shoulder is smaller than the bore of the tube body.

Illustratively, the hollow opening of the tube shoulder is smaller than the caliber of the tube body, so that the opening of the plastic hose is smaller than the diameter of the tube, and the plastic hose is conveniently prepared into a toothpaste tube, a cosmetic tube and the like.

Referring to fig. 3, fig. 3 is a schematic structural diagram of a plastic hose according to an embodiment of the present disclosure, the plastic hose includes a cap 100, a shoulder 200, and a body 300.

Illustratively, the plastic hose further comprises a pipe cap 100, and the pipe cap 100 is made of the same material as the pipe body 300 and the pipe shoulder 200.

Illustratively, the tube cap 100 may be prepared using the same process as the tube body 300 and the tube shoulder 200, i.e., using a hollow blow molding process; it should be noted that the material of the cap 100 is the same as that of the tube body 300 and the tube shoulder 200, so that the plastic hose is integrally kept as a single material, and the plastic hose is convenient to recycle.

In some embodiments, the cap 100 is provided with a groove that engages the hollow opening of the shoulder 200.

Illustratively, the cap 100 and the shoulder 200 can be engaged, so that the cap 100 can seal the opening of the shoulder 200 to isolate the interior of the plastic hose from the external environment; alternatively, a thread or a fastening mechanism may be disposed in the groove of the cap 100 to cooperate with the shoulder 200 for convenient use.

In some embodiments, the pre-mold is a female mold, the inner wall of which is the same shape as the body of the plastic hose.

For example, the mold for hollow blow molding is only a female mold (female mold), and compared with injection molding, the mold has the advantages of low equipment cost, strong adaptability, good formability (such as low stress) and capability of forming products with complex undulating curves (shapes); the inner wall of the female mold is identical to the shape of the body of the plastic hose, so that the tubular thermoplastic blank is finally prepared into the desired shape.

The embodiment of the application also provides a hose which is manufactured by the method for manufacturing the plastic hose shown in any one of the figures 1 to 2, namely the plastic hose shown in figure 3.

In the prior art, the existing toothpaste tube or cosmetic tube mainly comprises a tube body, a tube shoulder and a tube cap; wherein, the hose body is mainly an aluminum-plastic sheet, an all-plastic sheet and a non-barrier sheet.

Plastic-aluminum sheet, current structure: the outer membrane high density polyethylene + low density polyethylene// low density polyethylene + ethylene-acrylic acid copolymer/aluminum foil// low density polyethylene + ethylene-acrylic acid copolymer/inner membrane high density polyethylene + low density polyethylene; the aluminum-plastic sheet has been developed for more than 30 years and has excellent performances such as fragrance retention, barrier property and the like, but the aluminum foil cannot be peeled and recycled at present, so that the aluminum-plastic sheet cannot be recycled and becomes a dangerous waste product.

An all-plastic sheet, namely outer-film high-density polyethylene + low-density polyethylene// low-density polyethylene/ethylene-vinyl alcohol copolymer// low-density polyethylene/inner-film high-density polyethylene + low-density polyethylene; the full-plastic sheet has been developed for more than 15 years, wherein polyvinyl alcohol is not recyclable, although the recycling requirement can be met by regulating the content of the polyvinyl alcohol to be less than or equal to 5%, because the outer film and the inner film contain high-density polyethylene/low-density polyethylene, and the laminated film is also low-density polyethylene, the content of the low-density polyethylene is high, the material is not single, the full-plastic sheet cannot enter a recycling flow of a high-density polyethylene blow molding bottle, and the full-plastic sheet only can become a dangerous waste product.

The barrier-free sheet is mainly high-density polyethylene and low-density polyethylene, but is not a single material, has certain recyclability, but has no barrier property; the barrier-free sheet has a certain recyclability, but the barrier-free sheet has no fragrance retention property.

Illustratively, the shoulder and cap portions of prior art hoses, currently the shoulder is predominantly high density polyethylene and the cap is polypropylene; it cannot be recycled.

At present, the attention on environment-friendly materials is higher and higher, and the demand on degradable materials, reusable materials and recyclable materials is higher and higher; even many international companies such as kohlrabi/unihub, etc. have put forward demands to switch all materials to environmentally friendly materials.

In conclusion, the tube body, the tube shoulder and the tube cap are not made of single materials and cannot be recycled, so that the tubes such as the toothpaste tube and the cosmetic tube cannot be recycled and only become wastes, and certain harm is caused to the environmental protection of the whole society. According to the plastic hose and the preparation method thereof provided by the embodiment of the application, as the recyclable preset thermoplastic plastic is adopted, the material is single, for example, the plastic hose can be prepared from single materials such as polyester, high-density polyethylene and polypropylene by a hollow blow molding method, and the hose body and the hose shoulder of the plastic hose are formed at one time, or the hose body is formed at one time and then welded with the hose shoulder; the preparation method of the plastic hose can replace the existing extrusion compounding process and hose manufacturing process, and the hose body and the hose shoulder of the plastic hose are prepared from single materials, so that the plastic hose can enter a recovery flow to realize recovery and use; therefore, the hose manufactured by the plastic hose manufacturing method can achieve the technical effects of recycling, improving the environmental protection and reducing the production cost.

In all embodiments of the present application, the terms "large" and "small" are relatively speaking, and the terms "upper" and "lower" are relatively speaking, so that descriptions of these relative terms are not repeated herein.

It should be appreciated that reference throughout this specification to "in this embodiment," "in an embodiment of the present application," or "as an alternative implementation" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrases "in this embodiment," "in the examples of the present application," or "as an alternative embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. Those skilled in the art should also appreciate that the embodiments described in this specification are all alternative embodiments and that the acts and modules involved are not necessarily required for this application.

In various embodiments of the present application, it should be understood that the size of the serial number of each process described above does not mean that the execution sequence is necessarily sequential, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method for preparing a plastic hose, which is characterized by comprising a hose body and a hose shoulder, wherein one end of the hose shoulder is provided with a hollow opening, and the other end of the hose shoulder is matched with the caliber of the hose body, and the method comprises the following steps:

2. The method of claim 1, wherein the predetermined thermoplastic comprises polyester.

3. The method of claim 1, wherein the predetermined thermoplastic comprises high density polyethylene.

4. The method of claim 1, wherein the predetermined thermoplastic comprises polypropylene.

5. The method of claim 1, wherein the tube body is welded to the tube shoulder.

6. The method of claim 1, wherein the hollow opening of the shoulder is smaller than the bore of the body.

7. The method of claim 1, wherein the plastic hose further comprises a cap made of the same material as the tube body and the tube shoulder.

8. The method of claim 7, wherein the cap is provided with a groove that engages with the hollow opening of the shoulder.

9. The method of manufacturing a plastic hose according to claim 1, wherein the predetermined mold is a female mold, and an inner wall of the female mold has the same shape as a tube body of the plastic hose.

10. A hose produced by the method of any one of claims 1 to 9.