阅读说明：本技术 一种pet二次拉伸输水带生产工艺及设备 (Production process and equipment for PET (polyethylene terephthalate) secondary stretching water conveying belt ) 是由 王振宇 于 2018-08-02 设计创作，主要内容包括：本发明涉及输水带技术领域,特别涉及一种PET二次拉伸输水带生产工艺及设备,将85％的FR530PET、10％的HG385MO、3％的INCROMAX100-PA-(SG)、2％的PD0014混合搅拌均匀,搅拌均匀后的原料经过螺杆搅拌加热至270度；加热后熔融的原料从机头被挤出,形成料胚；料胚在初次冷却套中冷却为管胚；管胚进入二次加温套,使管胚加热至半熔融状态,再进入二次拉伸套进行二次拉伸；二次拉伸后的管胚进入定型冷却套,完成最终定型。本发明的有益效果是：在PET二次拉伸输水带厚度只有传统PE输水带二分之一的情况下,其抗暴压力还能达到传统PE输水带的三倍以上,更抗老化,使用寿命更长。(The invention relates to the technical field of water conveying belts, in particular to a production process and equipment of a PET secondary stretching water conveying belt, wherein 85% of FR530PET, 10% of HG385MO, 3% of INCOMAX 100-PA- (SG) and 2% of PD0014 are mixed and stirred uniformly, and the uniformly stirred raw materials are stirred and heated to 270 ℃ by a screw; extruding the heated and melted raw materials from a handpiece to form a material blank; cooling the material blank in a primary cooling sleeve to form a tube blank; the tube blank enters a secondary heating sleeve to be heated to a semi-molten state, and then enters a secondary stretching sleeve to be stretched for the second time; and (5) the tube blank after the secondary stretching enters a sizing cooling sleeve to finish final sizing. The invention has the beneficial effects that: under the condition that the thickness of the PET secondary stretching water conveying belt is only one half of that of the traditional PE water conveying belt, the explosion-resistant pressure of the PET secondary stretching water conveying belt can reach more than three times of that of the traditional PE water conveying belt, and the PET secondary stretching water conveying belt is more anti-aging and longer in service life.)

1. A production process of a PET secondary stretching water conveying belt is characterized by comprising the following specific steps:

(1) mixing and stirring 85% of FR530PET, 10% of HG385MO, 3% of INCROMAX100-PA- (SG) and 2% of PD0014 uniformly, stirring and heating the uniformly stirred raw materials to 270 ℃;

(2) extruding the heated and melted raw materials from a handpiece to form a material blank;

(3) cooling the blank into a tube blank in a primary cooling jacket filled with cooling liquid;

(4) the pipe blank enters a secondary heating sleeve, so that the pipe blank is heated to a semi-molten state, and then enters a secondary stretching sleeve, and the pipe blank in the semi-molten state is expanded in the secondary stretching sleeve due to the injection of high-pressure gas into the pipe blank in the semi-molten state, so that the secondary stretching effect is achieved;

(5) and finally, the tube blank after secondary stretching passes through a shaping cooling jacket with cooling liquid inside to finish final shaping.

2. The production equipment for the PET secondary stretching water conveying belt is characterized by comprising a machine head, wherein the machine head is connected with a primary cooling sleeve, a secondary heating sleeve is arranged on the other side of the primary cooling sleeve, a secondary stretching sleeve is arranged on the other side of the secondary heating sleeve, and the secondary stretching sleeve is connected with a shaping cooling sleeve.

3. The apparatus for producing a PET secondary stretching water conveying belt according to claim 1, wherein the primary cooling jacket and the sizing cooling jacket are metal jackets filled with cooling liquid.

Technical Field

The invention relates to the technical field of water conveying belts, in particular to a production process and equipment of a PET secondary stretching water conveying belt.

Background

The water delivery belt is a thin-wall water pipe capable of being rolled into a plate for delivering water as the name implies, and is widely used due to the flexible and portable characteristics. At present, the water conveying belt on the market mainly uses a PE material as a main material, and has better portability compared with a PE hard pipe, but in a high-pressure use environment, the anti-explosion pressure of the water conveying belt is still generally small, and in some mountain areas or hilly areas with uneven ground, the water conveying belt is easy to explode due to the difference of water pressure, so that the whole water conveying belt is completely scrapped.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides a production process and equipment for a PET secondary stretching water conveying belt with long service life and strong anti-explosion pressure.

The technical scheme of the invention is as follows:

a production process of a PET secondary stretching water conveying belt comprises the following specific steps:

(1) mixing and stirring 85% of FR530PET, 10% of HG385MO, 3% of INCROMAX100-PA- (SG) and 2% of PD0014 uniformly, stirring and heating the uniformly stirred raw materials to 270 ℃;

(2) extruding the heated and melted raw materials from a handpiece to form a material blank;

(3) cooling the blank into a tube blank in a primary cooling jacket filled with cooling liquid;

(4) the pipe blank enters a secondary heating sleeve, so that the pipe blank is heated to a semi-molten state, and then enters a secondary stretching sleeve, and the pipe blank in the semi-molten state is expanded in the secondary stretching sleeve due to the injection of high-pressure gas into the pipe blank in the semi-molten state, so that the secondary stretching effect is achieved;

(5) and finally, the tube blank after secondary stretching passes through a shaping cooling jacket with cooling liquid inside to finish final shaping.

The invention relates to a production equipment scheme of a PET secondary stretching water conveying belt, which comprises the following steps: the PET secondary stretching water conveying belt production equipment comprises a machine head, wherein the machine head is connected with a primary cooling sleeve, a secondary heating sleeve is arranged on the other side of the primary cooling sleeve, a secondary stretching sleeve is arranged on the other side of the secondary heating sleeve, and the secondary stretching sleeve is connected with a shaping cooling sleeve.

The primary cooling jacket and the shaping cooling jacket are metal jackets filled with cooling liquid.

The technical scheme provided by the invention has the beneficial effects that:

the manufacturing process adopts the production processes of raw material heating plasticization, primary liquid cooling, secondary transverse stretching and secondary cooling. The secondary stretching enables molecular chains to be oriented under stress, the molecular chains are directionally arranged, the regularity is improved, the crystallinity is increased, the tensile strength is improved, and the anti-explosion pressure of the product is greatly improved, so that the problem of high pressure which cannot be borne by the PE water conveying belt is solved. Under the condition that the thickness of the PET secondary stretching water conveying belt is only one half of that of the traditional PE water conveying belt, the explosion-resistant pressure of the PET secondary stretching water conveying belt can reach more than three times of that of the traditional PE water conveying belt, and the PET secondary stretching water conveying belt is more anti-aging and longer in service life than the traditional PE water conveying belt. Because the thickness is thinner, the portability of the device is better exerted, and the labor intensity of an operator is reduced. The plastic is a non-renewable resource, and the water conveying belt with better performance is made of less materials, thereby making certain contribution to energy conservation and environmental protection.

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 description of the embodiments will be briefly introduced 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 to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.