Rotational Molding Process and Application
Pubdate:2018-06-27 15:17 Views:
Rotational molding technology:
Rotational molding is also called Rotational Moulding. It is a quantitative powdery resin that is loaded into a cold mold. The rotomoulding machine drives the mold around two mutually perpendicular shafts for slow revolution and rotation. The external heating source is used to heat the mold so that the resin powder is melted and evenly coated on the surface of the cavity of the entire mold by its own gravity, and finally, a method of obtaining a hollow product after being cooled and demolded.
Rotational process features:
1, low cost rotomolding mold: the size of the same specifications of products, rotomolding mold costs about blow, injection mold costs 1/3 to 1/4;
2. The edge strength of rotomolding products is good, and rotomoulding can achieve the thickness of the product edge more than 5 millimeters, completely solving the problem of thinner edges of hollow products;
3, rotomolding can install a variety of inserts;
4, the shape of the rotomolding product can be very complex, and the thickness exceeds 5 mm;
5, rotomolding can produce fully enclosed products;
6, rotomolding products can be filled with foam material to achieve insulation;
7, without the need to adjust the mold, the rotational wall thickness of the product can be adjusted freely (2mm above);
8, the product is hollow and seamless, but can adjust the wall thickness, so that the product has high strength;
9, can provide a variety of surface pattern processing, the production of a variety of color products, can be used for anti-ultraviolet radiation aging treatment, for a variety of stone, wood simulation effect.
The main application of rotomolding products With the continuous development of rotomolding molding technology, the types of rotomolding products are continuously increasing, and the application range is also expanding. At present, the industries involved in rotomolding products at home and abroad include transportation, traffic safety facilities, entertainment industry, river channel dredging, construction, water treatment, pharmaceuticals, food, electronics, chemical industry, aquaculture, textile printing and dyeing, etc.:
1. Container type rotomolded parts These plastic parts are widely used in storage and supply tanks, storage tanks, various industrial chemical storage and transportation containers, such as acid, alkali, salt, chemical fertilizers, pesticide storage tanks, Chemical tanks, industrial coatings, wash tanks for rare earth production, reaction tanks, turnover tanks, waste containers, septic tanks, and domestic water tanks. For example, rotomolded cross-linked polyethylene barrels made from Philip's rotomolded grade cross-linked polyethylene resin “Maricxcl-100” can be compared with metal barrels, and it has good chemical resistance and low maintenance costs. .
2. The rotomolding parts for vehicles are mainly used polyethylene and polyvinyl chloride paste resins to rotomulate various automotive parts such as air conditioning elbows, vortex tubes, backrests, armrests, fuel tanks, fenders, door frames and gearshifts. Caps, battery housings, fuel tanks for snowmobiles and motorbikes, aircraft fuel tanks, yachts and their water tanks, cushion shock absorbers for boats and ships and docks, etc.
3, sports equipment, toys, handicrafts, rotomolding parts are mainly polyvinyl chloride paste rotomolding various parts, such as water polo, floats, small swimming pools, recreational boats and water tanks, bicycle seats, rotomolding palletizing Plates, surfboards, etc. As the rotomoulding mould can be manufactured by precision pouring, electroforming, etc.; the surface of the rotomoulded part has a good effect on the "replication" of the fine structure of the mould cavity surface, so the rotomoulding method can be used to make the products quite exquisite and beautiful. To produce products with great ornamental value, especially toys such as ponies, dolls, toy sand boxes, fashion models, and handicrafts.
4. Various types of large or non-standard rotomolded parts rotomoulded products are applied in various parts such as shelves, shells, and large pipes, such as shelves, machine housings, protective covers, lamp shades, and agricultural products. Sprayers, furniture, canoes, canopies for camping vehicles, playground equipment, planters, bathrooms, toilets, telephone booths, advertising display boards, chairs, highway isolation piers, traffic cones, buoys for rivers and seas, anti-collision cylinders, and building construction barriers, etc. Wait.
Our company has custom-made all kinds of rotomolding molds and rotomolding products for customers at home and abroad for a long time. We can design molds according to the drawings or samples provided by customers and envisage designs. We can process various rotomoulded products for customers.
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