In response to the industrial spray-foaming process, Kangron has developed a special solution, JetPreg, to develop a very efficient Cannon LS10 mixing head for the latest raw material formulations.
The JetPreg process developed by Cannon is used to produce honeycomb core reinforced composites
One reason that more and more PUR product manufacturers are now producing lightweight composite materials using a spray-blown process is the lower capital cost of spray equipment compared to HP-RTM solutions. Spray-foaming process, Cannon has developed a specialized solution, JetPreg, and has developed a very efficient Cannon LS10 mixing head for the latest feedstock formulation.
One reason that more and more PUR product manufacturers are now producing lightweight composite materials using a spray-blown process is the lower capital cost of the painting equipment compared to the HP-RTM solution Opportunities have spawned many new products, such as what is known in the industry as 'BayPreg' or 'ElastoFlex', a registered trademark of BASF Polyurethanes, Material, sandwich a layer of corrugated cardboard (honeycomb structure) made of a sandwich sandwich type glass fiber composite material, sandwiches plate with rapid reaction of polyurethane material infiltration, immediately into the press molding, to produce products.
The process has been developed for 15 years now, and the market demand for this process has further increased as energy-saving and emission reduction in the automotive industry has become more pressing. This lightweight glass fiber composite sandwich panel is mainly used In the production of car trunk floor, coat rack, sun visor and sun visor.
As a result, feedstock manufacturers are also developing more reactive feedstock formulations that require equipment metering and mixing systems to be within an appropriate flow range to ensure efficient, high volume production.
This process requires that these rapidly reacting PUR raw materials be evenly sprayed onto the entire surface of that large part prior to compression molding which has many significant advantages over the high pressure injection molding process:
1. Because there is no resistance that the liquid feedstock must overcome to flow in a closed mold, the press clamping force used to maintain the polymerization reaction is much less than the clamping force of a conventional high pressure injection process, which means that more Simple molding equipment, procurement and operation costs are lower.
2. Polyurethane foam has the best density distribution, can be sprayed only where needed, thus saving the raw material. Also, there is no injection point of the residue, and sometimes imprint of the traditional injection point is difficult to hide or eliminate.
3. When a part is molded and polymerized, the other part can be sprayed outside the press, thus eliminating takt time, greatly reducing cycle time for production and increasing the efficiency of each workstation.
To take full advantage of this spray-on-foaming process, the most efficient metering, mixing and spraying of polyurethane foaming equipment is required, otherwise these advantages can not be achieved, especially with fast foam spraying times, Use shorter.
Cannon continued to listen to its customers' requirements and work closely with raw material suppliers to finally develop JetPreg, a specialized solution for the industrial spray-foaming process, and developed a very efficient KangLong Cannon) LS10 mixing head for the latest raw material recipe The design of this mixing head is based on the well-known FPL mixing head and Cannon obtained the patented L-shaped mixing head in 1979. LS10 Reserved The FPL's mixed-chamber geometry replaces two large hydraulic pistons with a small diameter, short-stroke piston and uses a specially designed spray gun nozzle that simply blows with compressed air after each spray A little bit of residual raw materials can be.
Working with several major raw material manufacturers in the automotive interior industry, Cannon has repeatedly tested the rig's equipment to precisely debug equipment parameters, confirming several major advantages of this design:
1. High-pressure collision mode to mix raw materials, which is an absolute airless mixing method: Compared to other manufacturers that gas mixing to mix raw materials, Cannon equipment is the first high-pressure mixing of raw materials, Then spray through the spray gun nozzle, no gas spray at all.After the spraying, the air is only a small part of the front end of the spray gun, do not produce a bag of foam residue after finishing the class, the follow-up but also special treatment This gives the shop a better environment: cleaner molds, manipulators, ground and surrounding equipment, less smoke handling, more friendly working conditions for workers, and more importantly, raw material savings.
2. Unlike Conical Spray, Cannon blends raw material into a regular sector of a 2D plane that accurately covers the desired location, avoiding excessive overlap in adjacent spray paths Material: Spraying a large part of the path more streamlined, making the raw material density distribution more evenly on the parts where needed and more convenient to spray some material, compared with other spraying methods, the production time of about 20% shorter tact time.
3. Customers also expect the widest range of metering devices and mixing heads to be met: a metering device and LS10 mixing head with a set of nozzles for flow rates up to 30 to 300 g / s. If the design of the manufactured part is permissible , Spraying at high flow rates (which can also be done with lower flow rates while slowing robot speeds), faster paths, such as spraying the entire surface of a large car trunk floor, 40 seconds.
4. Can also use the same configuration of Cannon equipment for spraying different formulations of raw materials (normal or mineral-filled), and the entire set of components in contact with the polyol raw material are both resistant to abrasion and hardening.
5. The gun head design is simple, compact and hydraulic piping less, so small and medium-sized commercial robots can hold the gun head for automatic operation, procurement and maintenance costs are not high.
Currently, many auto parts manufacturers in Europe, China and the United States have chosen the newest Cannon JetPreg solution for mass production of lightweight, urethane-reinforced composite parts.
The Cannon LS10 mixing head offers many advantages over polyurethane spray and JetPreg processes
Many auto parts manufacturers in Europe, China and the United States have chosen the newest Cannon JetPreg solution for the production of lightweight reinforced composite parts for polyurethane and honeycomb panels