Galih Nurhidayat on LinkedIn: PET Bottle Injection Molding Process (2024)

Recycling Extrusion MachineStarch / PLA / Foam TPE / PP / PE / PVC / WPC / PET / PC / ABS / EVA Recycling / Pelletizing Extrusion Machine LinePellets are economical, high quality material to produce with excellent results in a higher specific output. In the injection, blow molding and extrusion industries, the advantages of using pellet are reliable operating, dust-free processing, easy storage and cleaning.We are able to offer the world market a wide range of machinery for pelletizing. Our single-screw extruders can process various plastics material with high output rates, it's ideal for compounding, coloring, and recycling, masterbatch. Twin-screw extruders are designed to efficiently and economically process, its maximum flexibility for plastic compounding and multipurpose processing is able to meet highest technical standards.For optimization of processing, the control system is important to guarantee consistent production quality, we use PLC computer controller for automation control of the line. Over the past years, we have been successfully engaged in Underwater Pelletizer System, as well as cooperated with Japan company to develop Supercritical Reactive Compounding Pelletizing System, their high efficiency and performance are exceeding the traditional strand pelletizer and face cutting such pelletizer systems.In order to operate under optimum function, upstream and downstream equipment is designed for the best matched with the extrusion line under many decades of experience. User's design is always available upon request for various applications.Extrusion Machines We BuildBiodegradable / Starch / PLA / General Plastics Compounding & MasterBatch.Two Stage / Strand / Die Face Cutter / Water Ring / Underwater Systems.Multi-Application Laboratory Type Pelletizer.Supercritical Reactive Compounding and Pelletizer System.Continuous Bead Foaming Supercritical Type Compounding and Pelletizer System.#recycling #compounding #pla #biodegradable #starch #masterbatch

5

Tips to reduce Scrap by up to 90% for Molding & Extrusion!1.The use of purging compounds should be preventive, avoiding the degradation of the resin and its additives or pigments. Use purging compounds that can be left loaded in the barrels, molds, die, and generally in the system. In this way, we will avoid the entry of oxygen that promotes degradation, we will leave a thermally stable material that will be able to withstand the residual heat while the machine cools or heats.2.It is common to leave the heats on or on standby. As a general rule, no machine should be left on. The degradation may be so great that it forces the spindle to be dismantled or worse still, reach the point of ignition of the plastic and cause flames. Sometimes it is left at very low temperatures. Consider that this will eventually cause layers to adhere which will eventually come off in the form of black specks. Ideally, the system should be left off, the "time savings" normally thought to be achieved by reaching operating temperature are regularly lost when hours have to be spent manually cleaning the machines or sorting out contaminated parts.Turn off the heaters, because in some cases the purging compound will have a contracting effect that can help in the removal of some contaminants that were just forming.3.The first thing you must do when you finish producingthe last piece before moving on to another color/material or stopping a machineis to purge the barrel and mold. If the machine is still running good parts and is purged immediately, there's no reason for it to develop contamination. This puts you in a much better spot for start-up.This is a great benefit for you and your customers alike.4.On the day of start-up, turn on the machines in an orderly manner, starting with those that are most urgently needed to produce and secondly those that will work at a lower temperature. Those machines that have very high process temperatures will have to get up to their temperature. Keeping a machine running for hours above 230°C without producing will promote the formation of crusts and black specks.

📌🛠️ TYPES OF MIXING ZONES IN INJECTION MOULDING SCREW🛠️📌We are RAJLAXMI INDUSTRIES provides Different designs of screw as per coustmer application as give under 📌Basic Metering Screw: Simple 3 zone screw for PE1)Feed2)Transition3)Metering🔹Metering screw:-This type of screw has gradual metering section in entire screw length. Very heat sensitive material like PVC requires a very gradual compression/shear to melt it without burning.🔹Barrier Screw: -In normal screw melt covers the pellets keeping away from barrel to besrier Screw: Inn Barrier screw address to this issue. They have additional flight that acts as barrier creating gap between melted plastic and solid pellets.This separate sold and liquid plastic. At start solid channel is bigger and melt smaller but this order reverse as more material melts at end of section where solid channel is narrow and empty as all material is melted. These are widely used for all polyolefin, PP, nylons etc. Compression ratio range from 2.5:1 to 3.5:1 to suit polymers🔹Mixing Elements in single screw:- Since single-screw extruders provide relatively poor mixing. Further at times, Plastic pellets is added with additives, binders, fillers and other components for extrusion. Basic and barrier screw designs do not help much as they are not engineered for mixing. Therefore, different types of mixing elements are added to the screw's metering zone to improve mixing. They either give shearing or dispersive mixing that adds to the melting capacity, or act as distributive device that mixes by dividing and reuniting melt several times to offer hom*ogeneous mix of all components in the melt. Different mixers necessarily have some of both features. Let us check few mixing elements used in industry🔹Maddock mixer screw:- A head design in the metering zone restricts flow and generates high shear rates, even at low screw rpm. They provide high shear over barrier screws i.e., dispersion, while splits and recombine melt flow giving good distribution mixing. Maddock Mixing zone are used for PE-Higher L/D.🔹Pin Mixing Screws:-Some screw designs incorporate mixing devices such as pins or barriers to flow in the metering zone to improve even mixing of the polymer melt.Mixing pins are rows of metal pins inserted into the root diameter of a screw in the metering section of a screw. Pin mixers depending on number of pins and rows create numerous divisions in melt and can efficiently mix melt of varying viscosities. Their disadvantage is that they can create a substantial pressure drop and pins offers stagnant point for material to degrade.www.ringplunger.in | info@ringplunger.in#injectionmouldingmachine#automotive #plasticindustry

8

Paul Murphy Plastics: Elevating Efficiency for Increased Single-Screw Extruder OutputIn the article "How Screw Design Can Boost Output of Single-Screw Extruders" featured on Plastics Technology Online, the focus is on enhancing the efficiency of extrusion lines. Taking a leading role in this endeavor, the company has demonstrated the key to increasing the capacity of an extrusion line—either by extending run time or boosting the rate. For lines already at full capacity, optimizing the screw design becomes a lucrative solution, delaying the need for costly new equipment.The company exemplifies the success of rate improvement by designing new screws with deeper, optimized channels, particularly beneficial for PE resins. These optimized channels result in higher specific rates, lower discharge temperatures, and the prevention of resin degradation. The lower discharge temperatures enable significant rate increases ranging from 18% to 36%, showcasing the economic viability of this approach.Read more: https://lnkd.in/epK5RKCW

Polyethylene rotational molding can use either linear low-density polyethylene (LLDPE) or high-density polyethylene (HDPE) to produce strong, hollow parts. https://bit.ly/3P7zZi3 #rotationalmolding #rotomolding #rotolmolder #plastics

Polystyrene Injection MoldingPolystyrene (PS) is a commodity thermoplastic with an amorphous structure. It has excellent resistance to gamma rays and, therefore, supports sterilization by radiation. Polystyrene plastics can be either transparent or opaque, and unmodified polystyrene is clear, rigid, brittle and moderately strong. Also, polystyrene is cost-effective and supports injection molding.Grades of polystyrene include GPPS and HIPS. General purpose polystyrene (GPPS) is naturally transparent and relatively brittle. High impact polystyrene (HIPS) contains additives that increase toughness but with a loss of transparency. When polystyrene is produced as a foam, types include extruded polystyrene (XPS) and expanded polystyrene (EPS). Welcome to discuss the project andsend us requested 3D drawing to quote🔻o@proto-mfg.cn#CNCMachineService#CNCMachiningParts#CNCMillingParts#CNCTurningParts#LatheParts#StampingParts#CastingParts#Mould#CNCPartsFactory#cnccutting#5axis#5axiscnc#cnc#cncmachinist#cncmachining#automationsolutions#aerospacemanufacturing#automotiveindustry#autoparts#machinetoolshttps://lnkd.in/gMM_8C9e

2

What is the importance and functions of the dew point in the resin dryer for injection? In a resin dryer for injection molding, dew point is a critical parameter that indirectly reflects the moisture content of the air used for drying plastic pellets. Here's a breakdown of its importance and functions:IMPORTANCE OF DRY RESIN:- Moisture Issues:Most plastic resins are hygroscopic, meaning they readily absorb moisture from the surrounding environment. Excess moisture in the resin can lead to several problems during injection molding, such as:- Hydrolysis:Moisture can cause degradation of the polymer chains in the resin, affecting its mechanical properties.- Blistering:During the high-pressure injection process, trapped moisture can vaporize and create voids or blisters within the molded part.- Surface Defects:Moisture can affect the surface finish of the molded part, leading to imperfections.UNDERSTANDING DEW POINT:- Dew Point Definition:Dew point is the temperature at which the air becomes saturated with moisture and condensation begins to form. While it doesn't directly measure the moisture content of the resin itself, it provides a valuable indication of how dry the air used for drying is.FUNCTIONS OF DEW POINT IN RESIN DRYER:1. Monitoring Drying Efficiency:- A LOW DEW POINT reading signifies drier air within the dryer. This indicates that the desiccant bed is effectively removing moisture from the air, creating a more suitable environment for drying the resin. - Conversely, a HIGH DEW POINT suggests the presence of more moisture in the drying air. This might indicate a saturated desiccant bed requiring regeneration or insufficient drying capacity for the current conditions.2. Process Control and Quality Assurance:- By monitoring the dew point and maintaining it within a RECOMMENDED RANGE specified by your resin manufacturer, you can ensure a consistent drying process. This helps to achieve the desired final moisture content in the dried resin, minimizing the risk of moisture-related issues during molding and contributing to consistent part quality.3. Early Warning System: - A sudden rise in the dew point reading can serve as an early warning sign of potential problems within the drying system. This might indicate issues like: - Malfunctioning desiccant bed requiring maintenance or replacement. - Leaks in the drying system allowing moist ambient air to enter.LIMITATIONS OF DEW POINT:- It's important to remember that dew point doesn't directly measure the moisture content of the resin itself. Other factors like the specific resin type and its drying characteristics also influence the overall drying process.

8

What is the frequency of changing the molecular sleeve for the dryer for the injection mould machine?Unfortunately, there's no one-size-fits-all answer to the frequency of changing the molecular sieve sleeve for an injection molding machine's dryer. The ideal replacement schedule depends on several key factors:1. Material being dried:Different materials have different moisture sensitivities. Preforms made from hygroscopic materials like PET require more frequent sleeve changes compared to less sensitive materials like PP.2. Usage and throughput:Higher production volume and longer dryer operating hours lead to faster moisture adsorption by the sleeve, necessitating more frequent replacements.3. Ambient humidity:Operating in a high-humidity environment subjects the sleeve to more moisture exposure, requiring earlier replacements.4. Sleeve capacity and regeneration efficiency:Larger sleeves can hold more moisture before requiring regeneration, while more efficient regeneration processes extend the sleeve's lifespan.5. Dew point monitoring and control: Regular monitoring of the dryer's dew point (moisture content) provides valuable insights into the sleeve's performance. A significant dew point rise indicates potential saturation and the need for replacement.Recommendations and Best Practices:* Manufacturer guidelines:Consult the sleeve manufacturer's recommendations for expected lifespan and regeneration intervals based on specific material and operating conditions.* Moisture content monitoring: Regularly monitor the dew point of the dry air exiting the sleeve. A significant increase (typically 5°C or more) indicates potential saturation and the need for evaluation.* Visual inspection:Visually inspect the sleeve for signs of moisture breakthrough or discoloration, which may indicate the need for earlier replacement.* Performance testing:Periodically conduct performance tests to measure the sleeve's moisture adsorption capacity. A significant reduction in capacity indicates the need for replacement.* Preventative maintenance:Implement a proactive maintenance schedule for sleeve regeneration and replacement based on the factors mentioned above and your specific operating conditions.By considering these factors and adopting best practices, you can establish an optimal schedule for changing the molecular sieve sleeve in your injection molding machine's dryer. This ensures optimal drying performance, prevents moisture issues in preforms, and ultimately contributes to high-quality plastic products.Remember, consulting with experienced injection molding professionals can provide valuable guidance on optimizing your drying process and determining the most suitable sleeve replacement schedule for your specific needs.

2

𝐀 𝐆𝐮𝐢𝐝𝐞 𝐭𝐨 𝐏𝐥𝐚𝐬𝐭𝐢𝐜𝐬 𝐂𝐨𝐦𝐦𝐨𝐧𝐥𝐲 𝐔𝐬𝐞𝐝 𝐢𝐧 𝐁𝐥𝐨𝐰 𝐌𝐨𝐥𝐝𝐢𝐧𝐠Blow molding resin trends focus on enhancing sustainability with recycled materials and improving performance with advanced polymer blends. Blow molding is a process similar to glass blowing and is used to create hollow objects like water bottles, Tupperware, construction cones, kids’ toys, spray bottles and much more.Get PDF: https://lnkd.in/d47gC8bwBlow molding resin is used in the blow molding process for manufacturing hot tubes. The blow molding process uses thermoplastic-based materials in form of substrates. The blow molding resins are formed by placing the raw material inside a mold cavity and then inflating of the raw material is done with the help of compressed air to give a particular shape and size to the molded cavity. The end product produced from blow molding resins exhibits properties like resistance to chemical, scratch, abrasion, and also imparting high gloss finish.The rise in demand for packaging industries where blow molding resins are predominantly used in manufacturing purposes may thrive the growth of the blow molding resins market. In addition, an increase in demand for bottled food and beverage items will increase the growth of the blow molding resins market owing to their use in the plastic bottle manufacturing process at a very low cost.The technological advancements in polymerization sectors to enhance the properties of resins (like imparting proper strength and toughness) will replace the use of metals with molded resins in different sectors that will create lucrative opportunities for the blow molding resins market during the forecast period.#automotive #packaging #foodandbeverage #chemical #BlowMoldingResin #blowmolding #molding #petroleum #plastic #resins #polymer #material

9

𝐁𝐥𝐨𝐰 𝐌𝐨𝐥𝐝𝐞𝐝 𝐏𝐥𝐚𝐬𝐭𝐢𝐜 𝐁𝐨𝐭𝐭𝐥𝐞𝐬 𝐌𝐚𝐫𝐤𝐞𝐭, 𝐆𝐥𝐨𝐛𝐚𝐥 𝐎𝐮𝐭𝐥𝐨𝐨𝐤 𝐚𝐧𝐝 𝐅𝐨𝐫𝐞𝐜𝐚𝐬𝐭 𝟐𝟎𝟐𝟑-𝟐𝟎𝟑𝟐𝐃𝐨𝐰𝐧𝐥𝐨𝐚𝐝 𝐚 𝐟𝐫𝐞𝐞 𝐒𝐚𝐦𝐩𝐥𝐞 𝐑𝐞𝐩𝐨𝐫𝐭 𝐏𝐃𝐅 : https://encr.pw/72DAGThe Global 𝐁𝐥𝐨𝐰 𝐌𝐨𝐥𝐝𝐞𝐝 𝐏𝐥𝐚𝐬𝐭𝐢𝐜 𝐁𝐨𝐭𝐭𝐥𝐞𝐬 𝐌𝐚𝐫𝐤𝐞𝐭 was valued at 𝐔𝐒$ 𝟏𝟎𝟒𝟔𝟖𝟎 𝐦𝐢𝐥𝐥𝐢𝐨𝐧 𝐢𝐧 𝟐𝟎𝟐𝟐 and is projected to reach 𝐔𝐒$ 𝟏𝟐𝟕𝟐𝟏𝟎 𝐦𝐢𝐥𝐥𝐢𝐨𝐧 𝐛𝐲 𝟐𝟎𝟐𝟗, at a 𝐂𝐀𝐆𝐑 𝐨𝐟 𝟐.𝟖% during the forecast period. Blow molded plastic bottles are light weight plastic bottles which are produced by the process of molding plastic with machine blowing process to from plastic bottles, jars, and jugs. The process of molding is done by common blow molding technology used in different plastic such as polyethylene (PE), polyethylene terephthalate (pet), HDPE for molded plastic bottles requiring multi-layer technologies for moisture barrier requirements to improve product stability and compatibility. Primarily types of blow molding process that form blow molded plastic bottles include stretch blow molding, extrusion blow molding, compound blow molding and injection blow molding. One of the common and simplest blows molded plastic process involves extrusion blow molding which places a hot tube of plastic material placed in mold and air is injected through the top to form into molded shape. As the tube of hot plastic material touches the mold, the material freezes to form rigid shape.𝐊𝐞𝐲 𝐏𝐥𝐚𝐲𝐞𝐫𝐬 𝐈𝐧𝐜𝐥𝐮𝐝𝐞:-Alpha Packaging, Inc.-Apex Plastics-Sidel-Silgan Holdings Inc.-Amcor-BERRY PLASTICS IK, LLC-Constantia Flexibles-First American Plastic-Graham Packaging-LINPAC GROUP LIMITED--Resilux-RPC Group Limited-Sonoco-Streamline Plastics#BlowMoldedPlasticBottlesMarket #Blow #Molded #Plastic #Bottles #BeverageIndustry #HouseholdIndustry #PersonalCareIndustry #Manufacturing #ChemicalsandMaterials

5