10 of the hottest new plastic processing technolog

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10 new plastic processing technologies

wood plastic composite plastics

the essence of energy saving of wood plastic composite plastics is to use the waste of natural wood processing (such as sawdust, wood powder, hemp fiber, fruit shell, rice bran, pulp, orange stalk, bamboo powder, etc.) to carry out ultra-fine surface treatment, blend with synthetic resin, and the filling amount can be as high as 50%. The formed products can be sawed, planed, drilled, and have low water absorption, no deformation due to moisture, and do not contain formaldehyde, which is in line with environmental protection Fire retardant and other safety requirements. In the past, sawdust, wood powder and waste materials were mostly burned, which not only wasted a lot of resources, but also caused environmental pollution. As an energy-saving, material saving and environment-friendly material, wood plastic composites have attracted widespread attention in the world, and there are many research results. In the past 10 years, wood plastic composites in North America have increased by 50% every year. The development of wood plastic composite plastics is more meaningful in China, because in 2000, China's wood demand was as high as 101.9 million m3, the supply was 63.9 million m3, and the gap was as high as 1. The formula for calculating thrust (f) was 38 million m3

wood plastic composites are mainly used in the construction industry (building planks), automobile industry (door panels, rear shelving boards, roofs, elevated boxes, protective plates, etc.), warehousing industry (pallets, baseplates, packaging boxes), transportation industry (highway noise barriers, guardrails, warehouse partitions, rail sleepers), agriculture (scaffolding, grooves, buckets), facilities (floors, open-air tables and chairs, sheds, ladders, etc.). Take pallet as an example, the domestic market demand is about 100million, more than 90% of which should be changed to wood plastic, and an emerging industry with an output of 10million tons and a value of 60billion yuan needs to be developed

however, there are many key technologies in the production of wood plastic composite products: resin, wood powder manufacturing technology, wood powder drying technology, wood powder interface treatment technology; In injection molding, extrusion and blow molding equipment, single screw or twin screw is required to have good dispersibility, wettability, mixing, shearing, exhaust, dehydration, devolatilization and bubble elimination functions for wood flour; Plasticized parts should be corrosion-resistant and wear-resistant; The equipment shall have the function of accurately controlling the above process conditions and the residence time of materials in each part

TPE rapid processing technology

it is predicted that in the near future, injection molding processors will significantly shorten the processing cycle by adopting a new technology when processing santoprenetm thermoplastic rubber. Using this technology can not only greatly reduce the cost of producing a single part, but also improve the processing capacity of injection molding. Combined with this advanced processing technology, a new santoprenetmtpe series will soon appear in a new look, and its processing speed will be 25% higher than the usual santoprenetm rubber brand. These materials with improved processing and molding properties can also significantly reduce the production costs of injection molding processors

it is reported that by putting this latest santoprenetm rubber technology into the market, it can help processors save production costs and improve production capacity, which is more conducive to their business expansion. At the same time, this new rapid processing technology has further expanded the economic boundary of choosing San to increase investment attraction and toprenetm rubber to replace thermosetting rubber

other advantages of choosing santoprenetm rubber to replace thermosetting rubber include ease of processing, design adaptability, reliable component consistency, recyclability, and efficient use of waste, including waste generated in the production process and after the service life of components

this technology can also be used for injection molding, blow molding and extrusion molding. However, the production type that needs a long processing cycle, such as injection molding, can benefit most from this new technology

$page break $new development direction of packaging machinery control technology

today's mechanical control system seems to be single, but it contains logic and motion control systems, human-machine interaction systems, diagnostic systems, and even artificial intelligence systems. The following examples from packaging machinery manufacturing industry will reveal the new development direction of mechanical control system

like most technologies, mechanical control technology has also experienced twists and turns in the development process. It has developed from a simple and huge control system in history to today's small multi-function control system, which organically combines machinery, motion control and communication system

at first, the first generation of packaging machinery used in the packaging field, dubbedgen1, has a simple structure and is purely mechanical. A motor drives the linear shaft to rotate and generates power through the cam. The control system with programmable controller (PLC) is also simple in structure, and the operator directly controls the machine. In most cases, human machine interaction technology (HMI) has not been adopted. Then came the second generation of packaging machinery. This technology was born ten years ago. The packaging machinery is still driven by the transmission shaft, but the structure is more complex. Because the speed is controlled by the servo motor, it can send instructions to some special actions, and it also adopts a more complex PLC programmable logic controller. Indeed, the adjustability of the second generation packaging machinery is better, but this advantage requires higher costs. These costs include more line layout, more PLC programmable logic controller input/output (i/o) devices, which are large and complex, with more sensors and program control, and even more peripheral devices; And it is more difficult to eliminate and deal with the fault

the current third generation packaging machinery integrates the so-called "mechatronics" concept, using servo systems and simple mechanical devices to achieve the purpose of performing complex actions. The goal pursued by the seller is: the machine is cheaper, faster, better performance, and covers a small area, so it is not surprising that new technologies are constantly introduced according to demand

the third generation packaging machinery was born four years ago. Its development focus has shifted to single box control technology. It has logical PLC function and i/o device. If necessary, it can also be equipped with HMI technology, or even Ethernet and network communication service system to facilitate communication between enterprises. Previously, the second generation packaging machinery needed an encoder and a programmable limit switch (PLS) to determine the servo position. Now, because the third generation packaging machinery has i/o devices, the servo control system exists in a processor. When the servo system is in place, it will generate sensing action and send a signal through the bus to start any required process flow

two step granulation of engineering thermoplastics

Weima machinery company of Germany showed the latest achievements of two-step granulation equipment at the Milan plastic Exhibition on February, 2006, which is characterized by two primary and secondary granulators. The equipment is suitable for economical granulation of engineering thermoplastics such as ABS, PA, PBT, PC, POM, PPA, LCP, etc., especially the granulation of reinforced glass fiber, in the form of large waste blocks or large volume production residues

in the two-step granulation, the material to be granulated is pre granulated into particles of about 40mm size in the WLK solid uniaxial main granulator, and then further granulated into final particles of about mm by the NZ subsequent secondary granulator, which is specially designed for the secondary granulation of pre granulated materials

in order to avoid granulation failure, it is necessary to continuously add an appropriate amount of material to the crusher, and these requirements are generally difficult to guarantee through manual operation. Once the feeding is excessive, it will usually cause uneven granulation, fluctuations, and accompanied by high-level noise. The result is that the material is accumulated or the heat energy of the material being crushed is weakened due to friction. In addition, the high sensitivity of interfering materials and the wear of ordinary high blades that cause frequent blade replacement have yet to be observed

in contrast, two-step granulation enables the main granulator to feed discontinuously, where the hopper acts as a buffer. Feeding in this way is of great significance to optimize the whole production process, because those operators do not have to operate the granulator continuously, so that they can be busy with other work

through the control of a stop switch, the pre granulated particles are now well added to the NZ secondary granulator. The arrangement of two granulators can be selected as one above the other or one after the other. The secondary granulator works according to the working principle of the cutting machine and is specially designed for pre granulated particles. Compared with the ordinary granulator, the volume of the second generation granulator is much smaller, and it only needs less driving energy of the whole machine. Due to its uniform feeding, it operates at a speed of approximately 450min-1, and there has been no failure. When such a granulator is used for the second crushing of pre granulated materials, the noise level is much lower than that of one-step processing with the same speed (n=min-1)

$page break $kautes shows kcc20d extrusion blow molding machine

on this year's booth (Hall W2, platform E03), kautes shows a kcc20d extrusion blow molding machine. It is equipped with zwvp30 four cavity die with a center distance of 100 mm. In this exhibition, this machine produces 0.75 liter round bottles with a production capacity of 2400 per hour

Cortez can provide a wide range of blow molding machines. It is used for the production of continuous extrusion or storage cylinder die heads. It is equipped with a mobile clamping device, or in the production of packaging containers with a capacity from a few milliliters to 30 liters, and even large containers with a capacity of 10000 liters, six or seven layer coextrusion fuel system, and in the production of three-dimensional rotating pipe fittings, it is equipped with a parison feeding device. In this way, the flash can be minimized to meet the requirements for the maximum size gap of automotive pipes, household appliances and other technical components

single sandwich injection molding

the industry is facing great pressure from the demand for flexibility and continuous improvement of production methods. The current trend, such as the increasing variety of automobile models for specific markets, requires further development in platform sharing policies, parts sharing systems and modular design methods. Other hot topics include value-added, function improvement and vehicle weight reduction

the plastic industry can now make great contributions in the fields of lightweight structure, versatility and design flexibility. Moreover, processes like single sandwich, multi-component solutions, shortened cycle time and reduced energy consumption can help reduce the overall cost. The reduced material demand and shorter cycle time can increase the output, which can play a great role in the production costs related to single component automotive parts

advantages and disadvantages of injection and blowing process

advantages of injection and blowing process:

1 Plastic bottles are formed at one time from raw materials to finished products, with a high degree of automation, no manual secondary processing, labor-saving, hygienic and in line with the GMP requirements of pharmaceutical packaging, especially suitable for the production of pharmaceutical bottles

2. The appearance of the product is beautiful, the size of the bottle mouth is accurate, and the weight of the plastic bottle is stable

3. Plastic products are made of injection molded embryos by one-time blow molding. There is no waste at the mouth and bottom of the bottle. The mouth of the bottle is flat and has good sealing performance

4. It is suitable for producing high-grade and exquisite plastic hollow products, such as cosmetic bottles, baby bottles, space cups, lamp balls, etc

injection blowing process has the following disadvantages compared with extrusion process:

1 The process is complex, and the mold processing is difficult to master

2. There are many mold parts, and the production and processing cycle is long

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