Anus dosing device based on ABS (Acrylonitrile Butadiene Styrene) material and production process of anus dosing device

Abstract

The invention discloses an anus dosing device based on an ABS material and a production process thereof.The anus dosing device comprises a needle cylinder, a nut and a dosing adapter, a push rod is connected into the needle cylinder in a sealed and sliding mode, a first internal thread layer is arranged in the needle cylinder, an adapter is arranged at the lower end of the needle cylinder, a first external thread layer is arranged on the outer wall of the adapter, and a second internal thread layer is arranged on the outer wall of the first external thread layer; a first external thread layer is arranged on the inner wall of the adapter, a second internal thread layer is arranged on the inner wall of the adapter, the first internal thread layer is in threaded connection with the first external thread layer, a plurality of first protrusions are arranged on the outer wall of the adapter, a third internal thread layer is arranged on the inner wall of the nut, and the third internal thread layer is in threaded connection with the first external thread layer. A second external thread layer is arranged on the outer wall of the administration adapter, the second external thread layer is in threaded connection with the first internal thread layer, and the needle cylinder, the push rod and the nut are all made of PP materials. According to the anus dosing device produced by the production process, the performance and the quality of the dosing device can be better improved, and the treatment requirements of patients can be better met.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly relates to an anal medicator based on ABS material and its production process. Background Art

[0002] In the medical field, for the drug treatment of anal diseases such as hemorrhoids, anal administration is a common and effective treatment method. A suitable anal medicator can help patients deliver drugs to the affected area more accurately and conveniently, improving the treatment effect. However, there are many problems with the existing anal medicators on the market, which limit their use effect and the patient experience.

[0003] The adapters of some current anal medicators often use polyethylene (PE) material. During the molding process of polyethylene, the molding method of thermoplastic plastics is usually used, but its molding shrinkage rate is relatively high. This characteristic makes it difficult for the adapter to achieve a good match with most of the medicine tube screw threads, and then a series of serious problems occur. In actual use, poor sealing is one of the most prominent problems. This not only makes it difficult to extract the ointment, affecting the efficiency and accuracy of drug administration, but also easily causes the phenomenon of liquid leakage at the screw thread, resulting in waste of drugs, and may also pollute the surrounding environment, bringing many inconveniences to patients.

[0004] At the same time, there are also obvious defects in the design of the existing drug administration adapters. The existing drug administration adapters generally use top drug delivery, that is, the drug outlet is located at the top of the drug administration adapter, and the distance from the drug outlet to the anus is more than about 3 cm; for hemorrhoids, taking the anal dentate line as the boundary, above the dentate line is internal hemorrhoids, accounting for about 59.86%; below the dentate line is external hemorrhoids, accounting for about 16.01%; those with both above and below the dentate line are mixed hemorrhoids, accounting for about 24.13%, and the dentate line is located about 3 cm from the anus. Based on such a structural design, the existing drug administration adapters can only apply drugs to internal hemorrhoids and some mixed hemorrhoids, but cannot effectively deliver drugs to external hemorrhoids and some mixed hemorrhoids, greatly limiting the scope of application and treatment effect of the medicator, and unable to meet the diverse treatment needs of patients. The "Weiyike" anal medicator adopts a side groove drug outlet design, and the distance from the drug outlet to the safety ring is 1 - 3 cm, accurately covering the affected areas of internal hemorrhoids, external hemorrhoids, and mixed hemorrhoids.

[0005] Therefore, it is necessary to design an anal medicator based on ABS material and its production process to solve the above problems. Summary of the Invention

[0006] The purpose of the present invention is to solve the deficiencies existing in the prior art, and to provide an anal medicator based on ABS material and its production process. The anal medicator produced by this production process can better improve the performance and quality of the medicator, and better meet the treatment needs of patients.

[0007] To achieve the above object, the present invention adopts the following technical solutions:

[0008] An anal medicator based on ABS material, comprising a syringe barrel, a nut and a medicating adapter. A push rod is hermetically and slidably connected in the syringe barrel. A first internal thread layer is provided in the syringe barrel. A swivel joint is provided at the lower end of the syringe barrel. A first external thread layer is provided on the outer wall of the swivel joint. A second internal thread layer is provided on the inner wall of the swivel joint. The first internal thread layer is threadedly connected with the first external thread layer. A plurality of first protrusions are provided on the outer wall of the swivel joint. A third internal thread layer is provided on the inner wall of the nut. The third internal thread layer is threadedly connected with the first external thread layer. A second external thread layer is provided on the outer wall of the medicating adapter. The second external thread layer is threadedly connected with the first internal thread layer. The syringe barrel, the push rod and the nut are all made of PP material. The medicating adapter and the swivel joint are both made of ABS material.

[0009] Preferably, both the first external thread layer and the second internal thread layer are international standard triangular threads.

[0010] Preferably, the medicating adapter is divided into N type and W type. The N type is used for medicating internal hemorrhoids and partial mixed hemorrhoids. The W type is used for medicating internal hemorrhoids, external hemorrhoids and mixed hemorrhoids.

[0011] A production process of an anal medicator based on ABS material, applied to any one of the above-mentioned anal medicators, comprising the following steps:

[0012] Production process of the medicating adapter:

[0013] S1: Select high-purity ABS raw materials and prepare production molds;

[0014] S2: Perform electrostatic polishing treatment on the molds;

[0015] S3: Put the high-purity ABS raw materials into the barrel of the injection molding machine, and then inject them into the molds at a specific speed and pressure, and control the temperature of the barrel within a specific range for injection molding. During the injection molding process, the injection time is 1.5±0.5 s, the holding pressure is 4.5±1 Mpa, the holding time is 0.1±0.2 s, and the cooling time is 8±1 s;

[0016] Production process of the swivel joint:

[0017] S1: Preheat and dry the ABS plastic raw materials at 80-90°C for 3 hours;

[0018] S2: Put the dry ABS raw material into the barrel of the injection molding machine, then inject it into the mold at a specific speed and pressure, and control the temperature of the barrel within a specific range for injection molding. During the injection molding process, the injection time is 1.1 s ± 0.5 s; the holding pressure is 5 Mpa ± 1, and the holding time is 0.2 s ± 0.2 s; the cooling time is 8 s ± 1 s;

[0019] Syringe production process:

[0020] S1: Select high-quality PP raw material;

[0021] S2: Clean and maintain the syringe mold to ensure that the mold surface is smooth, free of impurities and damage;

[0022] S3: Put the PP raw material into the barrel of the injection molding machine, control the injection into the mold at a specific speed and pressure, and control the temperature of the barrel within a specific range for injection molding. During the injection molding process, the injection time is 1.8 s ± 0.5 s, the holding pressure is 5 Mpa ± 1, the holding time is 0.4 s ± 0.2 s, and the cooling time is 8 s ± 1 s;

[0023] Pusher production process:

[0024] S1: Select high-quality PP raw material;

[0025] S2: Ensure the dimensional accuracy and surface quality of the mold;

[0026] S3: Put the PP raw material into the barrel of the injection molding machine, control the injection into the mold at a specific speed and pressure, and control the temperature of the barrel within a specific range for injection molding. During the injection molding process, the injection time is 1.5 s ± 0.5 s, the holding pressure is 5 Mpa ± 1, the holding time is 0.3 s ± 0.2 s, and the cooling time is 8 s ± 1 s.

[0027] Preferably, when the drug delivery adapter is injection molded, the barrel temperature in section I is 225 ± 5 °C, in section II is 228 ± 5 °C, in section III is 228 ± 5 °C, in section IV is 223 ± 5 °C, and in section V is 218 ± 5 °C; the injection pressure is set as: in section I is 8.5 Mpa ± 1, in section II is 8 Mpa ± 1, in section III is 0, and in section IV is 0.

[0028] Preferably, when the adapter is injection molded, the barrel temperature in section I is 225 ± 5 °C, in section II is 228 ± 5 °C, in section III is 228 ± 5 °C, in section IV is 223 ± 5 °C, and in section V is 218 ± 5 °C; the injection pressure is set as: in section I is 8 Mpa ± 1, in section II is 7.5 Mpa ± 1, in section III is 0, and in section IV is 0.

[0029] Preferably, when the syringe is injection-molded, the barrel temperature is set as follows: Section I: 205 ± 10 °C, Section II: 225 ± 10 °C, Section III: 225 ± 10 °C, Section IV: 222 ± 10 °C, Section V: 215 ± 10 °C; the injection pressure is set as follows: Section I: 8 Mpa ± 1, Section II: 7.5 Mpa ± 1, Section III: 7 Mpa ± 1, Section IV: 6.5 Mpa ± 1.

[0030] Preferably, when the push rod is injection-molded, the barrel temperature is set as follows: Section I: 195 ± 10 °C, Section II: 220 ± 10 °C, Section III: 220 ± 10 °C, Section IV: 218 ± 10 °C, Section V: 210 ± 10 °C. The injection pressure is: Section I: 7.5 Mpa ± 1, Section II: 7 Mpa ± 1, Section III: 6.5 Mpa ± 1, Section IV: 6 Mpa ± 1.

[0031] The present invention has the following beneficial effects:

[0032] 1. Compared with the prior art, the anal drug delivery device of the present invention has significant improvements in the design and material selection of the adapter. The adapter is made of acrylonitrile ABS material, which has a small molding shrinkage rate, and both the internal and external threads are international standard triangular threads. This enables the adapter to perfectly fit the screw threads of the mainstream domestic medicine tubes, effectively solving the problems in the prior art such as the mismatch between the adapter and the screw threads of the medicine tube due to high molding shrinkage rate, poor sealing performance, difficulty in extracting ointment, and liquid leakage at the screw mouth, greatly improving the efficiency of drug extraction and the sealing performance of storage, reducing drug waste and environmental pollution;

[0033] 2. Compared with the prior art, the drug delivery adapter of the present invention is more reasonably and comprehensively designed. The drug delivery adapter is divided into type N and type W. Type N is specifically used for the drug delivery of internal hemorrhoids and some mixed hemorrhoids, while type W can be used for the drug delivery of internal hemorrhoids, external hemorrhoids, and mixed hemorrhoids. This classification design fully considers the incidence locations and characteristics of different types of hemorrhoids, and can accurately deliver the drug to each affected part, making up for the defect of the existing drug delivery adapter that can only apply to internal hemorrhoids and some mixed hemorrhoids and cannot accurately apply to external hemorrhoids and some mixed hemorrhoids, significantly expanding the applicable range of the drug delivery device;

[0034] 3. Compared with the prior art, the production process of the syringe and the push rod in the present invention is more refined and strict. By precisely controlling parameters such as temperature, pressure, and time during the injection molding process, it is ensured that the first internal thread layer of the syringe has high precision, and the threaded connection with the adapter and the drug delivery adapter is tight and has good sealing performance, avoiding the occurrence of liquid leakage. At the same time, the push rod can smoothly slide in the syringe and has excellent sealing performance, ensuring the accuracy and stability of the drug extraction and drug delivery processes, and improving the user experience of patients;

[0035] 4. Compared with the prior art, the material selection of each component in the present invention is more scientific. The syringe barrel, the push rod, and the nut are made of PP material, which is a commonly used medical device material with good physical properties and chemical stability, ensuring safety and reliability during use. The drug delivery adapter and the adapter are made of ABS material. Utilizing its comprehensive performance advantages of "hard, tough, and high rigidity" and the characteristic of small molding shrinkage rate, it meets the usage requirements and production demands of each component, comprehensively improving the quality and performance of the entire anal drug delivery device. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 FIG. is a schematic structural diagram of an anal drug delivery device based on ABS material and its production process proposed by the present invention;

[0037] Figure 2 is Figure 1 a schematic structural diagram after the separation of the syringe barrel and the adapter in FIG.;

[0038] Figure 3 is Figure 2 a schematic structural diagram from another perspective;

[0039] Figure 4 is a schematic structural diagram of the adapter and the nut;

[0040] Figure 5 is Figure 4 a schematic structural diagram after the separation of the adapter and the nut in FIG.;

[0041] Figure 6 is a schematic structural diagram after the connection of the syringe barrel and the drug delivery adapter.

[0042] In the figure: 1 syringe barrel, 2 push rod, 3 adapter, 4 nut, 5 drug delivery adapter. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0043] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0044] Refer to Figures 1-6, an anal applicator based on ABS material, comprising a syringe 1, a nut 4 and a dosing adapter 5. A push rod 2 is hermetically and slidably connected inside the syringe 1. A first internal thread layer is provided inside the syringe 1. A swivel joint 3 is provided at the lower end of the syringe 1. A first external thread layer is provided on the outer wall of the swivel joint 3, and a second internal thread layer is provided on the inner wall of the swivel joint 3. The first internal thread layer is threadedly connected to the first external thread layer. A plurality of first protrusions are provided on the outer wall of the swivel joint 3. A third internal thread layer is provided on the inner wall of the nut 4, and the third internal thread layer is threadedly connected to the first external thread layer. A second external thread layer is provided on the outer wall of the dosing adapter 5, and the second external thread layer is threadedly connected to the first internal thread layer. The syringe 1, the push rod 2 and the nut 4 are all made of PP material, and the dosing adapter 5 and the swivel joint 3 are both made of ABS material. The first external thread layer and the second internal thread layer are both international standard triangular threads, which can match the screw threads of mainstream medicine tubes. The dosing adapter 5 is divided into N type and W type. The N type is used for the administration of internal hemorrhoids and some mixed hemorrhoids, and the W type is used for the administration of internal hemorrhoids, external hemorrhoids and mixed hemorrhoids.

[0045] Among them, the nut 4 is screwed tightly with the swivel joint 3, which is mainly used for the sealed storage of the medicine tube after each use. One end of the swivel joint 3 is screwed tightly with the medicine tube, which is used to replace the sealing cap of the original medicine tube; after being screwed tightly with the syringe 1 at the other end, it is used to extract the medicine in the medicine tube; after the extraction is completed, the syringe 1 is unscrewed and the matching nut 4 is screwed on for the sealed storage of the remaining medicine in the medicine tube.

[0046] A production process of an anal applicator based on ABS material, applied to the above-mentioned anal applicator, comprises the following steps:

[0047] Production process of the dosing adapter 5:

[0048] S1: Select high-purity ABS raw materials to form a more uniform surface during processing, reduce defects and flaws, thereby improving the gloss, and prepare the production mold;

[0049] S2: Carry out electrostatic polishing treatment on the mold so that the surface of the processed parts has good flatness and high brightness;

[0050] S3: Put the high-purity ABS raw materials into the barrel of the injection molding machine, and then inject them into the mold at a specific speed and pressure, and control the temperature of the barrel within a specific range for injection molding. During the injection molding process, the injection time is 1.5±0.5 s, the holding pressure is 4.5±1 Mpa, the holding time is 0.1±0.2 s, and the cooling time is 8±1 s;

[0051] Production process of the swivel joint 3:

[0052] S1: Preheat and dry the ABS plastic raw materials at 80-90 °C for 3 hours to meet the requirement of having a certain gloss on the surface;

[0053] S2: Put the dry ABS raw material into the barrel of the injection molding machine, then inject it into the mold at a specific speed and pressure, and control the temperature of the barrel within a specific range for injection molding. During the injection molding process, the injection time is 1.1s ± 0.5s; the holding pressure is 5Mpa ± 1, and the holding time is 0.2s ± 0.2s; the cooling time is 8s ± 1s, and during the production process, focus on controlling the thread forming to ensure that the shrinkage rate meets the requirements for matching the thread of the mainstream domestic medicine tube screw mouth;

[0054] Production process of the syringe barrel 1:

[0055] S1: Select high-quality PP raw material;

[0056] S2: Clean and maintain the mold of the syringe barrel 1 to ensure that the surface of the mold is smooth, free of impurities and damage, providing a good foundation for injection molding;

[0057] S3: Put the PP raw material into the barrel of the injection molding machine, control the injection into the mold at a specific speed and pressure, and control the temperature of the barrel within a specific range for injection molding. During the injection molding process, the injection time is 1.8s ± 0.5s, the holding pressure is 5Mpa ± 1, the holding time is 0.4s ± 0.2s, and the cooling time is 8s ± 1s;

[0058] Production process of the push rod 2:

[0059] S1: Select high-quality PP raw material;

[0060] S2: Ensure the dimensional accuracy and surface quality of the mold to guarantee the forming accuracy of the push rod 2;

[0061] S3: Put the PP raw material into the barrel of the injection molding machine, control the injection into the mold at a specific speed and pressure, and control the temperature of the barrel within a specific range for injection molding. During the injection molding process, the injection time is 1.5s ± 0.5s, the holding pressure is 5Mpa ± 1, the holding time is 0.3s ± 0.2s, and the cooling time is 8s ± 1s.

[0062] Among them, when injecting the drug administration adapter 5, the barrel temperature of section Ⅰ is 225 ± 5°C, section Ⅱ is 228 ± 5°C, section Ⅲ is 228 ± 5°C, section Ⅳ is 223 ± 5°C, and section Ⅴ is 218 ± 5°C; the injection pressure is set as: section Ⅰ is 8.5Mpa ± 1, section Ⅱ is 8Mpa ± 1, section Ⅲ is 0, and section Ⅳ is 0.

[0063] Among them, when injecting the adapter 3, the barrel temperature of section Ⅰ is 225 ± 5°C, section Ⅱ is 228 ± 5°C, section Ⅲ is 228 ± 5°C, section Ⅳ is 223 ± 5°C, and section Ⅴ is 218 ± 5°C; the injection pressure is set as: section Ⅰ is 8Mpa ± 1, section Ⅱ is 7.5Mpa ± 1, section Ⅲ is 0, and section Ⅳ is 0.

[0064] Among them, when the syringe 1 is injection-molded, the barrel temperature is set as follows: section I is 205 ± 10 °C, section II is 225 ± 10 °C, section III is 225 ± 10 °C, section IV is 222 ± 10 °C, section V is 215 ± 10 °C; the injection pressure is set as follows: section I is 8 Mpa ± 1, section II is 7.5 Mpa ± 1, section III is 7 Mpa ± 1, section IV is 6.5 Mpa ± 1. During the injection molding process, closely monitor the molding situation of the syringe 1, especially the molding quality of the first internal thread layer, to ensure that the threads are clear and the dimensions are accurate, so as to ensure good cooperation with the adapter 3 and the drug delivery adapter 5. After the injection molding is completed, perform post-treatment work on the syringe 1 such as deburring and trimming to ensure that the surface of the syringe is smooth and there are no sharp corners, meeting the safety standards of medical devices.

[0065] Among them, when the push rod 2 is injection-molded, the barrel temperature is set as follows: section I is 195 ± 10 °C, section II is 220 ± 10 °C, section III is 220 ± 10 °C, section IV is 218 ± 10 °C, section V is 210 ± 10 °C. The injection pressure is: section I is 7.5 Mpa ± 1, section II is 7 Mpa ± 1, section III is 6.5 Mpa ± 1, section IV is 6 Mpa ± 1. During the injection molding process, focus on controlling the dimensional accuracy and surface roughness of the sealing and sliding part between the push rod 2 and the syringe 1 to ensure that the push rod 2 can slide smoothly and be well-sealed inside the syringe 1 to avoid liquid leakage. After the push rod 2 is molded, conduct a comprehensive quality inspection on it, including inspections of dimensional accuracy, straightness, surface hardness, etc., to ensure that the push rod 2 meets the design requirements and can work in coordination with the syringe 1 and other components to meet the use performance of the anal drug delivery device.

[0066] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. An anal drug delivery device based on ABS material, comprising a syringe (1), a nut (4) and a drug delivery adapter (5), characterized in that: The syringe (1) is sealed and slidably connected with a push rod (2), the syringe (1) is provided with a first internal thread layer, the lower end of the syringe (1) is provided with an adapter (3), the outer wall of the adapter (3) is provided with a first external thread layer, the inner wall of the adapter (3) is provided with a second internal thread layer, the first internal thread layer is threadedly connected to the first external thread layer, the outer wall of the adapter (3) is provided with a plurality of first protrusions, the inner wall of the nut (4) is provided with a third internal thread layer, the third internal thread layer is threadedly connected to the first external thread layer, the outer wall of the medication adapter (5) is provided with a second external thread layer, the second external thread layer is threadedly connected to the first internal thread layer, the syringe (1), the push rod (2) and the nut (4) are all made of PP material, and the medication adapter (5) and the adapter (3) are all made of ABS material.

2. The anal drug delivery device based on ABS material according to claim 1, characterized in that: The first outer thread layer and the second inner thread layer are both triangular threads of international standards.

3. The anal drug delivery device based on ABS material according to claim 1, characterized in that: The drug delivery adapter (5) is divided into N type and W type. The N type is used for drug delivery to internal hemorrhoids and some mixed hemorrhoids, and the W type is used for drug delivery to internal hemorrhoids, external hemorrhoids, and mixed hemorrhoids.

4. A production process of an anal drug delivery device based on ABS material, applied to the anal drug delivery device according to any one of claims 1 to 3, characterized in that: The following steps are involved: Drug delivery adapter (5) production process: S1: Select high-purity ABS raw materials and prepare to produce molds; S2: electrostatic polishing of the mold; S3: Put high-purity ABS raw materials into the barrel of the injection molding machine, and then inject them into the mold at a specific speed and pressure, and control the temperature of the barrel to be within a specific range for injection molding. During the injection molding process, the injection time is 1.5±0.5s, the holding pressure is 4.5±1Mpa, the holding time is 0.1±0.2s, and the cooling time is 8±1s; Adapter (3) production process: S1: Preheat and dry the ABS plastic raw material at 80-90°C for 3 hours; S2: Put the dry ABS raw material into the barrel of the injection molding machine, and then inject it into the mold at a specific speed and pressure, and control the temperature of the barrel to be within a specific range for injection molding. During the injection molding process, the injection time is 1.1s±0.5s; the holding pressure is 5Mpa±1, the holding time is 0.2s±0.2s; the cooling time is 8s±1s; Syringe (1) Production process: S1: Select high-quality PP raw materials; S2: Clean and maintain the syringe (1) mold to ensure that the mold surface is smooth and free of impurities and damage; S3: Put the PP raw material into the barrel of the injection molding machine, control the barrel to inject into the mold at a specific speed and pressure, and control the barrel temperature to be within a specific range for injection molding. During the injection molding process, the injection time is 1.8s±0.5s, the holding pressure is 5Mpa±1, the holding time is 0.4s±0.2s, and the cooling time is 8s±1s; Push rod (2) production process: S1: Select high-quality PP raw materials; S2: Ensure the dimensional accuracy and surface quality of the mold; S3: Put the PP raw material into the barrel of the injection molding machine, control the barrel to inject it into the mold at a specific speed and pressure, and control the temperature of the barrel to be within a specific range for injection molding. During the injection molding process, the injection time is 1.5s±0.5s, the holding pressure is 5Mpa±1, the holding time is 0.3s±0.2s, and the cooling time is 8s±1s.

5. The production process of an anal drug delivery device based on ABS material according to claim 4, characterized in that: When the drug delivery adapter (5) is injection molded, the barrel temperature is 225±5°C in section I, 228±5°C in section II, 228±5°C in section III, 223±5°C in section IV, and 218±5°C in section V; the injection pressure is set as follows: 8.5Mpa±1 in section I, 8Mpa±1 in section II, 0 in section III, and 0 in section IV.

6. The production process of an anal drug delivery device based on ABS material according to claim 4, characterized in that: When the adapter (3) is injection molded, the barrel temperature is 225±5°C in section I, 228±5°C in section II, 228±5°C in section III, 223±5°C in section IV, and 218±5°C in section V; the injection pressure is set as follows: 8Mpa±1 in section I, 7.5Mpa±1 in section II, 0 in section III, and 0 in section IV.

7. The production process of an anal drug delivery device based on ABS material according to claim 4, characterized in that: When the syringe (1) is injected, the barrel temperature is set to: 205±10°C for section I, 225±10°C for section II, 225±10°C for section III, 222±10°C for section IV, and 215±10°C for section V; the injection pressure is set to: 8Mpa±1 for section I, 7.5Mpa±1 for section II, 7Mpa±1 for section III, and 6.5Mpa±1 for section IV.

8. The production process of an anal drug delivery device based on ABS material according to claim 4, characterized in that: When the push rod (2) is injected, the barrel temperature is set as follows: 195±10°C for section I, 220±10°C for section II, 220±10°C for section III, 218±10°C for section IV, and 210±10°C for section V. Injection pressure: 7.5Mpa±1 for section I, 7Mpa±1 for section II, 6.5Mpa±1 for section III, and 6Mpa±1 for section IV.

Images