Rubber is an elastomeric material of which there are two main types: natural rubber and synthetic rubbers such as neoprene, silicone, EPDM and styrene. Rubber companies provide rubber parts or components and offer rubber forming services. The two main services that rubber manufacturers offer are rubber molding and rubber extrusion. In fact, industrial rubber molded products are extremely popular and include rubber diaphragms, rubber grommets and rubber washers. Many industrial rubber products undergo secondary rubber manufacturing services to fit unique applications, such as a rubber baseboard being die cut to fit an exact wall size. Rubber manufacturing is essential to many different industries including the chemical processing, construction, automotive, electronics, medical, petrochemical, and aerospace industries. These industries use fabricated rubber products in essential applications like sealing, insulating and vibration absorption.
The rubber extrusion process allows different rubber materials to be shaped into useful products. Products like weatherstripping, rubber seals, rubber grommets, and rubber bushings are all results of the rubber extrusion process. Extruding involves pressing rubber through a die which shapes the rubber and cuts away material, leaving a rubber profile. The dies can be designed to produce almost any shape imaginable, so rubber extrusions can be custom made to satisfy a diverse range of requirements.
The properties of an individual finished product depend on the raw rubber stock used to make it, the extrusion process it underwent and any secondary processes. Since rubber exists in many unique forms, manufacturers are able further develop their products through raw material selection. For example, natural rubber, which is also called gum rubber, is sought after for its qualities of excellent acid and abrasion resistance.
Synthetic rubbers like silicone and viton, on the other hand, are frequently selected for applications in the healthcare and foodservice industries for their qualities of superior heat, chemical and weathering resistance. Another synthetic rubber, nitrile, is resistant to oils, while neoprene resists heat and butyl has low air flow permeability. In general, rubber extrusions are valued as sealants and gaskets because they offer such excellent flexibility, impermeability and resilience.
The process of rubber molding involves shaping raw rubber materials into functional products. While some products can be made by other rubber shaping processes such as cell casting and extrusion, the molding process has its own features that set it apart. Products that are made through rubber molding are enclosed in a mold cavity instead of a die, and can thus be made into complex and irregular shapes.
Rubber molding is a operation in which raw melted rubber takes form inside a mold. Many kinds of complex rubber products, such as rubber diaphragms and rubber seals, are made this way, due to the ability of the rubber molding process to precisely design a product so it fits perfectly into a piece of equipment without the risk of any kind of leakage. Products that are made to protect equipment, such as rubber washers and rubber grommets, must also be designed with precision, and are thus manufactured by rubber molding. These products can also be produced through rubber extrusion. However, extruding machines have much more limited capabilities. An extruder only has control over the X and Y axes, and are thus much more suited for the production of simpler rubber products such as rubber baseboards or rubber sheets. Rubber molding allows from design control over three axes due to the process involving a molding cavity instead of a die.
Rubber is bonded to metal using a variety of different adhesives. A metal substrate is sprayed with the bonding agent and then placed inside a mold. Rubber is then injected into the mold and allowed to cure, and once the rubber has solidified the part is complete. The process is used to fabricate products like rubber rollers, gaskets, seals, electrical cables, and engine mounts, and these kinds of products are utilized in the construction electric, medical, automotive, and aerospace industries.
The types of metal able to be bonded are quite varied. When rubber to metal bonding first began, steel of all grades was used most often. However, currently, aluminum alloys and polyamides have taken over as the most popular metal for bonding, because it is less expensive and more lightweight than steel, but it does not detract from seal strength or quality.
Other common metals used for rubber bonding include brass, beryllium, and copper. Rubber bonding may also be performed with non-metal materials, such as fabric, glass and a variety of plastics.
Rubber rollers are chemically resistant, shock absorbent cylindrical tubes that service many essential manufacturing applications. Commonly, rubber roller applications relate to material application, movement facilitation and material support and transportation. Examples of these applications include assembly line operation, grocery store checkout line operation, mail machine operation, consumer printer operation, industrial heat treat equipment operation, automatic car wash movement and boat trailer function. They’re also commonly used as wheels and castors.
Rubber rollers are usually named after their function. To illustrate, let’s quickly go over some rollers that fall under the application categories listed above. Two material application rollers are ink rollers and laminating rollers. Ink rollers, also called printing rollers, apply ink to paper and other materials; rollers may contain ink within themselves or they may be engraved with a pattern. Laminating rollers, made of heat resistant materials like silicone, are heated up to 500°F to laminate materials on both a small and large scale. An example a movement focused rubber roller is the rubber drive roller. Drive rollers, often used for converters and web machines, operate using integral shafts equipped with keyway that acts as a gear. Support and transportation rollers are quite common. Transportation rollers include guide rollers, grooved rollers and conveyor rollers. Guide rollers, or idler rollers, provide support to other roller systems like conveyors, but they do not actually move anything. Grooved rollers are called so because they have a grooved pattern, usually a spiral, U or V; grooved rollers are usually part of moving systems like belt driven conveyor systems. Incredibly common, conveyor rolls simply move, or convey, materials.
Rubber Tubing is used in a wide range of industries in the transportation of liquids and gases. This tubing is made from a variety of materials such as latex, neoprene, natural rubber, silicone, viton, EPDM and other types. Since this product can be manufactured from a number of different materials this allows for manufacturers to make rubber tubing with specific applications in mind.
With their varying chemical compositions, rubber tubings’ characteristics are quite diverse, which is advantageous for professionals who wish to engage tubing. Industries and applications including: food and beverage processing, medicine and surgery, commercial heating and cooling, lawn and garden care, petro-chemical extraction, sanitation and more. Flexible rubber tubing, for example, is ideal for beverage applications may that operate in very small or unconventional spaces, like bag in boxes. Surgical tubing is, of course, made to accommodate the requirements of a medical setting and the human body.