What Is Blow Molding ?

Blow molding is one of the processes of plastic container molding Blow molding is to put a tube or parison in a semi-molten state obtained by extrusion or injection molding into a mold, and then close the mold, and introduce a compressed gas into the parison to extend and expand it to adhere to the mold. On the wall of the cavity, after cooling and demolding, a production and processing method of a hollow product of a certain shape is obtained. It is a fast-growing plastic processing method.   According to the production method of the parison, the blow molding …

What Is Blow Molding ? READ MORE

Application Of Extrusion Blow Molding Machine Parison Control System

There are many methods for manufacturing plastic containers, such as extrusion blow molding, injection molding, rotary molding, compression molding, hot extrusion cold press molding. Among the molding methods of many plastic containers, hollow blow molding and injection molding are the two most widely used molding methods. According to the introduction of blow molding machines, 80% to 90% of the hollow containers in the world are formed by hollow blow molding. Extrusion blow molding technology is to shape the plasticized parison against the inner wall of the mold by air pressure. The parison is produced in an extrusion type, that is …

Application Of Extrusion Blow Molding Machine Parison Control System READ MORE

Extrusion Blow Molding Machine Production Cost Accounting

Extrusion Blow Molding Machine Production Fixed Cost: Fixed cost refers to the cost of whether the factory is open or not, regardless of whether it is produced or not. Calculated in chinese yuan: one extrusion blow molding machine CNY / day, three places after the decimal point. Fixed Cost Estimates Are Only Available For Pure Blow Molding Machine Company. If the company covers production content such as blow molding, mold manufacturing, and finished product assembly, the infrastructure and other expenses should be reasonably divided and calculated. Factory depreciation (own factory): total cost / 30 years / 255 days, leased factory: …

Extrusion Blow Molding Machine Production Cost Accounting READ MORE

Post Cooling And Auto Deflashing System Of Blow Molding Machine

The post-cooling system and the deflashing system are two important auxiliary devices for the hollow blow molding machine. This article describes the two devices. Extrusion Blow Molding Machine Products Post Cooling System post-cooling device mold cooling is the most common cooling type for extrusion blow molding. When the parison is inflated in the mold, the melt is pressed against the mold cavity wall, and the heat of the melt passes through the wall of the product and passes through the wall of the mold. The cooling medium is transferred and reduced, and the container is gradually cooled and shaped. The …

Post Cooling And Auto Deflashing System Of Blow Molding Machine READ MORE

Extrusion Blow Molding Machine Die Head Structure, Parison Control Principle & Maintenance Method

The storage type head is divided into a center feed type and a side feed type. Lateral feed is a very widely used method. In the storage type side feed hollow blow molding machine, the function of the machine head is to fuse the melt and form a parison. The key to the fusion of the melt is the flow path in the machine head. At present, some enterprises in China have developed a double-layered heart-shaped envelope flow channel, but the double-layered heart-shaped envelope flow path has a short length and a large pressure drop, and the circumferential uniformity is …

Extrusion Blow Molding Machine Die Head Structure, Parison Control Principle & Maintenance Method READ MORE

Analysis Of Common Failures Of Extrusion Blow Molding Machine Screw

Analysis of Common Faults and Causes of Screw and Cylinder of Extrusion Blow Molding Machine in Use Fault phenomenon Reasons and troubleshooting There is a scratching sound during operation 1. The center line of the barrel is bent to adjust the center height of the barrel 2. The barrel and the screw are not the same, check the position and position accuracy error of the relevant parts 3, the cylinder inner wall or screw outer diameter cylindricity accuracy is not enough, check and replace 4. Screw distortion, check and replace Local overheating near the connection between the barrel and the …

Analysis Of Common Failures Of Extrusion Blow Molding Machine Screw READ MORE

Selection Of Extrusion Blow Molding Machine

There are many manufacturers of extrusion blow molding machines, and the product models are complicated. For the manufacturer, there are many factors to consider when purchasing a suitable extrusion blow molding machine. Here, we will introduce the main technical parameters of the extrusion blow molding machine for users to choose and use. The main technical parameters of extrusion blow molding should be reflected in the three aspects of die storage, mold clamping and the whole machine. Extrusion blow molding machine technical parameters Technical parameters of extruded parts Screw diameter: the outer diameter of the screw. (mm) Effective length of the …

Selection Of Extrusion Blow Molding Machine READ MORE

How To Use, Inspect And Maintain The Extrusion Blow Molding Machine?

Extrusion blow molding machine basic status check: In the case of a newly purchased extrusion blow molding machine, inspection of the machine assembly should be carried out. After the equipment is installed according to the requirements of the manual, the entire unit should be calibrated, including the center position calibration of the extrusion blow molding machine head and the clamping device. Install the mold water cooling tube and check that it is correct. Operators and control devices (electrical control boxes, programmable controllers, operating keyboards, etc.) are convenient for operation. Whether the feeding, finished product placement, and waste recycling processes are …

How To Use, Inspect And Maintain The Extrusion Blow Molding Machine? READ MORE

Development Prospects Of The Extrusion Blow Molding Production Line

From the trend of market development, the production of many blow molding products such as plastic bottles, plastic drums, auto parts and industrial blow molding products has become more large-scale, and various large, medium and small high-speed, stable, energy-saving and auxiliary equipments have been specialized. The perfect and fully automatic extrusion blow molding production line will be the mainstream of the extrusion blow molding industry in the next few years. Large, super large extrusion blow molding production line 1. Large blow molding tray extrusion blow molding production line The rapid development of logistics, food, fertilizer, petrochemical, household chemicals, railway transportation …

Development Prospects Of The Extrusion Blow Molding Production Line READ MORE

Extrusion Blow Molding Failures And Remedies

DIRECTORY: 1. parison vertical stretching 2. parison neck portion narrow 3. parison overall crimping 4. parison edge rolled up 5. parison inflation and rupture 6. parison appear gas bubbles 7. parison leak 8. parison surface roughness 9. parison surface uneven 10. parison surface appears “Shark skin” 11. parison surface appear stripes 12. parison surface appears die core blotting 13. parison appear wrinkles 14. parison appear discoloration and uneven color 15. parison appear contaminat 16. parison sticking on the die head 17. product demoulding difficult 18. deflash difficult to remove 19. cut portion too thin 20. cut portion too thick 21. cut portion is not well integrated 22. cut portion strength insufficient 23. cut portion appear bubbles 24. product wall appear bubbles 25. product rupture 26. too …

Extrusion Blow Molding Failures And Remedies READ MORE

Hollow Blow Molding Process Diagram

塑料桶中空吹塑根本上能够分为两大类:挤出—吹塑和注射—吹塑。两者的主要不同点在于型坯的制备,然后的吹塑过程根本相同。在这两种成型办法的根底上开展起来的有:挤出—拉伸—吹塑(简称挤—拉—吹),注射—拉伸—吹塑(简称注—拉—吹)以及多层映塑等。注射-吹塑(简称注-吹)塑料瓶是采用注射成型法先将塑料制成有底型坯,再把型坯趁热移到吹塑模中吹塑成型的中空制品。注-吹中空容器没有飞边,尺寸稳定性好,瓶口与螺纹质量优良,型坯厚度可预先调理,制品光泽度好,俭省原料。但注-吹成型不合适消费大型和外形复杂的容器,又由于要运用注射和吹塑两副模具,所以设备投资较大。注-吹中空容器以外形筒单的小型瓶体为主,它能够用聚氯乙烯、聚乙烯、聚丙烯和聚苯乙烯、聚酯、聚酰胺等多种树脂来消费。主要用于医药、食品、化装品等的包装用于中空吹塑的塑料种类有聚乙烯、聚氯乙烯、聚丙烯、聚苯乙烯、线形聚酯、聚碳酸酯、聚酰胺、醋酸纤维素和聚缩醛树脂等。其中高密度聚乙烯的耗费量占首位。它普遍应用于食品、化工和处置液体的包装。高分子量聚乙烯适用于制造大型燃料醝罐和桶等。聚氯乙烯由于有较好的透明度和气密性,所以在化装品和洗濯剂的包装方面得到普遍应用。随着无毒聚氯乙烯树脂和助剂的开发,以及拉伸吹塑技术的开展,聚氯乙烯容器在食品包装方面的用量疾速增加,并且曾经开端用于啤酒和其它含有二氧化碳气体饮料的包装。线形聚酯资料是近几年进入中空吹塑范畴的新型资料。由于其制品具有光泽的外观、优秀的透明性、较高的力学强度和容器内物品保管性较好,废弃物燃烧处置时不污染环境等方面的优点,所以在包装瓶方面开展很快,特别在耐压塑料食品容器方面的运用最为普遍。聚丙烯因其树脂的改性和加工技术的进步,运用量也逐年增加。 Plastic barrel hollow blow can be divided into two categories: Extrusion blow molding and injection blow molding. The main difference between the two lies in the preparation of the blank, and then the blow molding process is the same. On the basis of these two methods to carry out: Extrusion stretch blow molding (abbreviated as extrusion blow), injection stretch blow molding (short note – pull – blow) and multilayer reflection. Injection blow molding (note – blowing) plastic bottle adopts the injection molding the plastic bottom slab, the parison while hot moved to blow mold, blow molding hollow products. Note – blowing hollow container with no …

Hollow Blow Molding Process Diagram READ MORE

Analysis Of Commonly Used Materials For Hollow Blow Molding

一名从事吹塑机塑料成型工作的技术人员和工人,必须了解塑料材料。只有了解各种类型的塑料吹塑机塑料材料,才能应用自如,无论是在成型前对原料的选择,还是成型中对成型工艺的设定,至成型机的投料,都与塑料的类型有关。 塑料的分类方法有很多,常用的有以下几种: One is engaged in blow molding machine plastic molding work of technical personnel and workers, must understand the plastic material. Only to understand the various types of plastic blow molding machine plastic materials,can be applied freely, Selection of raw materials before molding, Or molding process setting, feeding of molding machine, are related to the type of plastic. There are a lot of methods of classification of plastic, commonly used in the following several: 根据塑料的来源分为两种类型 According to the source of plastic is divided into two types (1)天然树脂natural resin; (2)合成树脂synthetic resin; 2.根据塑料的生产工艺分为四种类 According to the plastic production process is divided into four types 以链式聚合反应合成的树脂为基础的塑料。酸中酪及其共聚物等 Resin based plastic …

Analysis Of Commonly Used Materials For Hollow Blow Molding READ MORE

The Difference Between Blow Molding Tray And Plastic Tray

制造时间(Manufacturing time) 注塑工艺托盘在国内已发展20多年,在国外已经发展了四五十年,相对来说生产工艺趋于成熟稳定;注塑托盘在国内发展四五年,刚开始起步,因此在生产技术、制造工艺上还有待于进一步的提高。 Injection molding process tray has been developed in China for more than 20 years, has been developed in foreign countries for forty or fifty years, relatively speaking, the production process tends to mature and stable; Injection tray in the domestic development for four or five years, has just started, so in the production technology, manufacturing process is to be further improved. 生产设备(Production equipment) 注塑托盘采用大型注塑机一次注塑成型,产品结实耐用。吹塑托盘采用吹塑机中空吹塑成型,但在制造的过程中下料较多;就单个产品制造时间来说,注塑的托盘时间更短些。 Injection tray with large injection molding machine injection molding, the product is strong and durable. Blow molding tray blow molding machine blow molding, but in the process of manufacturing more material; For a single product manufacturing …

The Difference Between Blow Molding Tray And Plastic Tray READ MORE

Analysis Of Blow Mould Cooling System

对于几乎所有的挤出成型、注塑成型、吹塑及真空成型等成型方法,生产率很大程度上取决于塑料的加热与冷却的效率。吹塑成型过程中,通过模具带走融熔塑料的热量,使制品冷却定形,而吹塑成型中制品冷却时间占成型周期的60% 以上,对大型及厚壁制品高达90%。因此,提高吹塑制品的冷却效率,可缩短成型周期,降低能耗.  For almost all of the extrusion molding, injection molding, blow molding and vacuum molding methods, productivity is largely determined by the efficiency of the heating and cooling of plastic. In blow molding process, the heat of melting plastic is taken away by the mold, the product is cooled and set, and the cooling time of the product is more than 60% of the molding cycle, and the large and thick wall products are as high as 90%. Therefore, improve the cooling efficiency of blow molding products, can shorten the molding cycle, reduce energy consumption. 模温对吹塑工艺的影响(the influence of mold temperature …

Analysis Of Blow Mould Cooling System READ MORE

Blow Molding ABS Melt Enhanced Solution

对于高速行驶的轿车而言,安装于尾部的扰流板(如图1所示)具有非常重要的作用。除了能够为汽车带来漂亮的装饰效果外,更重要的是,扰流板还能够有效地减小高速行驶状态下轿车的上浮力,保障汽车行驶的稳定性,同时有助于节省燃料。 For a speeding car, installed in the rear spoiler (Fig. 1) plays a very important role. In addition to the beautiful decorative effect for the car, more important is spoiler can also effectively reduce the high speed passenger cars under the buoyancy and safeguard the stability of the car, while helping to save fuel.   塑料因质轻、美观且设计自由度大,加工容易,广泛应用于汽车部件,而ABS是应用比较广泛的扰流板材料。一般,普通的ABS材料在中空吹塑成型过程中熔体强度低、重复加工性差,易出现型坯熔体强度不足及下垂快等问题,从而引起制品发黄变脆、壁厚不均及管坯破裂等缺陷。 Plastics because of its lightweight, beautiful and free design, easy processing, widely used in auto parts, while the ABS is widely used spoiler material. In general, common ABS material in the hollow blow molding process melt strength low, repeated processing of poor, prone to …

Blow Molding ABS Melt Enhanced Solution READ MORE

3D Blow Molding

随着汽车工业对复杂、曲折的输送管道制作的需求,推动力偏轴挤出吹塑技术的开发,这种技术称为3D吹塑或者三维吹塑成型(也有的国家叫多维挤出吹塑MES)。由于利用三维吹塑在加工过程中产生的废边大为减少,甚至没有废边产生,所以也称为少废料或无废边吹塑。 Extrusion blow molding technology development, this technique is called 3D blow molding or 3D blow molding (also some countries call multidimensional extrusion blow molding MES).Due to the use of 3D blow molding is far less than that at the edge of the machining process of waste, not even waste removal, so also called waste or less waste and blow molding. 三维(3D)挤吹中空塑料的比较常用的一种成型方法是,塑料型坯被挤出后,被预吹涨并贴紧在一边模具壁上,挤出头或模具按成型编制的程序进行第二轴或第三轴的转动,当类似肠形的型坯充满膜腔时,另一边模具闭合并抱紧型坯,使之与后续的型坯分离,这是整个型坯被吹胀并贴紧在膜腔的壁上成型。用这种方式生产类似汽车上的空气导管或输油管,不但飞边少,而且制品上无合模线并且可顺序挤出,使很多复杂形状的制件很容易地用三维吹塑成型法来加工成型。 Three-dimensional (3D) crowded blowing hollow plastic is a forming method, which are frequently used plastic parison after being squeezed out, blown up and stick close by in advance in the side of the mold wall and the extrusion …

3D Blow Molding READ MORE

Scroll to Top