Presently, the modes of packaging thousands of edible and non-edible items are based on PET (polyethylene terephthalate) technology in which plastic injection molds give the shape and size of the desired container, be it the bottle or a jar. This is enabled by the hot runner systems that happen to be complex of heated components regulating the injection of the material in the cavities.
The concept of hot runner systems was initially developed during early 60s but gained popularity three decades later. One of the reasons for such delayed implication was the notion about PET containers not being environment friendly until scientists proved that PET is a recyclable material. Above all, the users realised that the hot runner systems are very cost effective and economical in the long run. Read more
The success of a PET packaging unit depends on the quality of the moulding facilities provided by the manufacturer of the system. The ultimate utility of the bottle or jar is proven by the superior properties in the caps and closures. These should possess high standards in terms of being leakage and pilfer proof. This is ensured when the cap closure mould manufacturer is of repute.
Such a company should have top class infrastructure for design and development of wide range of perfect PET moulds for the caps and closures to suit various patterns of the moulded packing containers. The moulds need to possess optimum properties for high-speed, high cavitations, high-volume applications. The hot runners need to be balanced for consistency in cavity-to-cavity filling. This is vital since a hot runner undergoes melt channel sizing analysis where balance, shear rate and pressure drop are optimized.
By and large, the growth prospects for plastic processing industry in India for the period 2014-2015 that the Central Institute of Plastic Engineering and Technology (CIPET) had projected have been achieved. Segment-wise, this forecast had predicted installation of additional 40,800 units of processing machinery:
- Injection Moulding – 26,700
- Blow moulding – 3,900
- Extrusion – 10,200
- Total – 40,800
Simultaneously, the demand for preform moulds too would have increased manifold. No wonder, delegates at the Conference of PLAST INDIA 2015 held at Gandhinagar in Gujarat in early February this year focussed on technological upgradation in the industry. Thus they discussed advanced materials and Applications for engineering and high temperature applications, technological innovations and emerging new opportunities in the field of packaging. Read more
With the onset of summer, almost all of us would relish drinking chilled water or an aerated drink which these days come in attractive plastic bottles and not so much in glass bottles of yore. Interestingly, at the outset there were apprehensions over the base material used in these bottles and also other containers being hazardous to the environment. However, scientists in due course clarified and confirmed that such products are eco-friendly. Well, these are actually made from a material known as PET, acronym polyethylene terephthalate and the technology its applications has literally revolutionised the concept of packaging.
The technique in the making of these PET bottles is through moulding done through extrusion process. And their quality depends on the PET preform molds inserts used to mould the bottles. These moulds come in a wide range in tune with the needs of the bottling plant. They are products of high precision engineering and made from high quality steel, mostly imported from Japan. Read more
In 2014, a leading global market research agency published its findings of a study conducted on the prospects for the Indian PET Preform trade and industry. It projected a highly optimistic market outlook till 2018. During this survey, it was noted that packaging sector is the largest application sector for the plastic industry, representing almost 60 percent of the total plastics demand. The forecast on consumption of plastics in this segment indicated a mammoth figure of 10 million tonnes by the year 2020.
Indeed, these signs have spelt a boon for the manufacturers of Injection Moulding Machine that is extensively used in PET bottling and allied products. Many of the companies engaged in this industry have created a global impact too. To cite an instance, the Delhi NCR-based Ashish Tools has geared up to meet the challenges of the future. Keeping in view these aspects, it has already setup a unit where mould Base are mould Inserts are assembled in dust proof environment. The range of machinery at this plant includes latest CNC systems from reputed international brands like DMG, Mori Seiki & BFW.
Ever since the PET became the medium for innovative mode of packaging various items, the mould making industry has attained new heights. Currently, PET has been the widely accepted mode of packaging for food and beverages including cooking oil, cosmetics and personal care items, pharmaceuticals, insecticides and industrial lubricants among others. Thus the demand for the products and services of cap closure mould manufacturer too has risen. These closure moulds are made in various designs. Depending on the technology in use, the range of cavity and the container, broadly these moulds are classified as follows:
- Bumper off closure
- Tamper proof closure
- Flip top closure
- Multi-material closure
For instance, Ashish Tools, the Noida-based blow moulds manufacturer in India designs and manufactures cap and closure mould for beverage industry. The moulds are optimised for high-speed, high cavitations, high-volume applications. The applications are for hot runners with cavity-to-cavity filling. As per PET technology, the tot runner undergoes melt channel sizing analysis where balance, shear rate and pressure drop touch are optimum.
Though the Indian economy faced a meltdown during the inflation of 2009, it after regaining its strength has shown a tremendous advancement in all the sectors of economy. One such sector to grow out big is Plastics. Growing at a rate of 13 per cent, the industry that serves almost every other sector of Indian is expected to maintain its double digit growth in the coming years as well.
Studies show that India alone is growing market for plastics and consumer of about 11 million tons against global consumption of 275 million tons per year. The consumption should increase to 16 million tons by 2020. This means that the use of plastics will tremendously increase giving opportunity to manufacturers to step into this field of production.
There has been increase in the demand of dimensionally stable and accurate parts/components in the medical sector using PET bottle moulds. Many medical components have checked the developments in injection molding and strive to incorporate it manufacturing precise medical equipment. Tight tolerance of the mould walls, dimensionally correct measurements of the equipment are a few characteristics that needs to be taken care of while designing molds particularly for medical sector. The Scientific Injection Molding (SIM) is the solution to all the measurement related problems while mould making.
The SIM technique strives to make the most of the recent pet preform injection moulding machine in India and their procedures. The technique of scientific injection molding can be easily worked with thermoplastic materials, unconventional materials like silicon, rubber, thermoset plastics etc. The SIM is not a fixed process and is highly variable, and is dependent upon the nature of the device to be manufactured. The tweaking of the present injection molding practices has evolved the technique all the more. However, manufacturing robust SIM is a time taking process and elevates the need of process engineers to take following factors into consideration:
A hot runner system is an integration of heated components used primarily in plastic injection molds. It helps inject molten plastic into the hollow cavities of the mold. Where as, a cold runner system is simply a channel in between the two halves of the mold, designed to carry plastic from the injection molding machine to the cavities.
Every time the mold opens up to eject the newly formed plastic parts, the runner material is ejected too. This result in the wastage of the plastic deployed. On the contrary, a hot runner system includes a heated manifold. The primary purpose of the heated manifold is to allocate the plastic entering in the mold to the various nozzles and measure the injection points in the cavities. Read more
With the advent of consumerism taking hold over the market, customers’ priorities are taken care of in first place. Several industrial segments especially the PET plastic manufacturing sector too have steered its manufacturing keeping customer’s preferences first. To design plastic bottles, containers in a way that are aesthetically pleasing and easy to handle, use are the determinant factors that decide the fate of Plastic manufacturing industry.
Conventionally, plastic bottle producers faced tough times and many challenges while designing especially while manufacturing bottles, containers with complex, intricate contours. Research and development in the technology has led to overcome these challenges. To deliver satisfactory results, PET Preform manufacturers came up with the technique of blow molding.