Cork Rolls
Composite agglomerate, commonly known as "white agglomerate", consists of agglomeration of cork granules, which can also be mixed with other materials such as rubber, plastic, asphalt, cement, gypsum, casein, resins, adhesives, resulting in composite agglomerates thanks to which results in a great variety of products.
Granulation: The cork used in the production of building and decorative materials comes from the first and second bark obtained from cork oak, which is not used for cork stoppers, and from waste, shavings, pieces and cork waste from other industrial units. . The cork is crushed and has a different grain size (usually greater than 0.25 mm and less than 22.4 mm) and density (typically 70-90 kg / m3). The granules are obtained by operating several types of mills, taking into account the material to be grinded and the type of granulate intended.
Agglomeration
These granules are the raw material for the production of agglomerates and are produced as a result of the agglutination process of granules with a specific grain size and density as well as the combined action of pressure, temperature and binder, depending on the product and purpose.
After using automatic or manual dosing, mixing the granulate with binders and possibly other auxiliary agents takes place in a mechanical process - paddle or screw mixers. The density of this process will depend on the purposes for which it is intended.
For example, in agglomerates for decorative purposes, values from 200 to 350 kg / m3 and fine-medium granules are used; for floor coverings the density ranges from 450 kg / m3 to 600 kg / m3; and for expansion joints (cork is used between rigid elements, i.e. concrete, as acoustic and thermal insulation), the size is medium, and the density ranges from 250-350 kg / m3.
For this agglutination, synthetic polyurethane, phenolic and melamine resins and even plant resins are used.
Färben
During the agglomeration phase, the granules can also be colored with pigments, which allows different colors to be obtained.
Moulds: The granules and resins are then placed in moulds, mostly metallic and cuboid - cylindrical molds are used for cork rolls - followed by pressing.
The molds are then placed in an oven, which can be a heated oven (with temperatures ranging from 110 °C to 150 °C and for a period of 4 to 22 hours) or continuous high-frequency systems (tunnel) or discontinuous (fiberglass) molds are used and can be ready to use in 3-4 minutes).
Thereafter, demolding and cooling/stabilizing are performed to obtain an agglomerate block suitable for laminating into sheets. There is another molding system called carpet.
In this case, the granules, binders, and agents are mixed and placed on a conveyor belt, and after passing through a hot platen press at a temperature of 120–180 °C, they bond to form a single plate of the desired thickness
Kork und hohe Temperatur
.Agglomeration: These granules are the raw material for the production of agglomerates and are the result of the agglutination process of granules of a certain grain size and density, and the combined action of pressure, temperature and binder, depending on the product and intention.
After automatic or manual dosing is used, the granules are mixed with binders and possibly other auxiliary agents in a mechanical process - paddle or screw mixers.
The density of this process will depend on the purposes for which it is intended. For example, in agglomerates for decorative purposes, values from 200 to 350 kg / m3 and fine-medium granules are used; for floor coverings the density ranges from 450 kg / m3 to 600 kg / m3; and for expansion joints (cork is used between rigid elements, i.e. concrete as acoustic and thermal insulation), the size is medium, and the density ranges from 250-350 kg / m3.
For this agglutination, synthetic polyurethane, phenolic and melamine resins and even plant resins are used.
Manufacture of cork fabric and paper:
These products are obtained by laminating sheets of natural or agglomerated cork. In this case, the granulation and agglomeration process is similar to the composite agglomerate.
Laminate sheets are very thin (usually 50-500mm thick) and are glued onto fabric, textile backing or paper. This app reveals cork texture and ribs for a feel. They are produced in a variety of patterns and colors and are used for a variety of purposes.
What are cork rolls?
Cork rolls are thin rolls of material made of natural cork. The rolls have a natural grain that can be found in any type of cork material, but are sometimes colored to make the product blend in with the overall color of the room.
Along with products such as cork tiles, cork rolls can be used to create notice boards, cover under carpets or vinyl floors, and even as wallcovering. Many hobby stores as well as home stores offer cork rolls and cork squares in a variety of sizes.
Different types of cork rollers
Different types of cork rollers are used for different purposes. Better grades are often used when it comes to using wallcovering material. A slightly thicker grade is generally recommended when creating your newsletter or tack board. For quilting, slightly thick grades are usually the best option.
In addition to home uses, cork rollers can also be used for many different types of crafts and hobbies. Processed cork makes excellent hot compresses for use with hot melt glue guns or gaskets in small engine kits.
Cork rolls or squares can also be used to create decorative and functional accessories such as placemat or even placemat. The cork section can also protect the table when children assemble the car models.
Advantages of cork
One of the advantages of cork is that the material is a great insulator. When used as a wall covering, cork insulation can help maintain a comfortable temperature in the room. The material can also help mute sound when used as a wooden ceiling or tile floor. Cork rolls perform well in hot as well as cold climates and can have a significant impact on utility bills.
Since cork board is relatively inexpensive, using cork rolls for decorative purposes is a great option when you don't have a lot of money. The material can look great in combination with mirrored tiles to create a backdrop for a potted plant collection or create an inexpensive notice board near the back door or in the kitchen. Since the cork rolls can be removed without much trouble, it is easy to change the look of the room from time to time.
While many people prefer to use the natural tint of cork, it is possible to purchase cork rolls in a wide variety of colors. This makes rollers even more useful as a decorative accessory in main living areas as well as in children's rooms.
The advantages of cork as insulation
This natural insulation has several advantages such as excellent resistance to moisture and the undeniable quality of sound and thermal insulation. Additionally, cork is a 100% natural product that is also resistant to fire, moisture and water.
Expanded natural cork insulation boards achieve high scores in terms of efficiency due to the thermal conductivity of the panels from 0.032 to 0.042 W / m.K. This value increases between 0.040 and 0.049 W / m.K for agglomerated cork. In addition, it also has good sound insulation, which is practical if the building or apartment is located near a noisy air corridor.
Cork oak has a density (from 105 kg / m3 to 125 kg / m3), which gives it excellent mechanical and environmental properties. The expanded cork has a structure of millions of cells trapping still air. This feature (96% of air) explains its very good parameters in terms of thermal insulation.Dès le IIème siècle de notre ère, le tronc du chêne-liège est écorcé et façonné en Méditerranée.
En effet, grâce à ses propriétés diverses et variées, le liège est un matériau naturel particulièrement intéressant. Un panneau de liège d'une épaisseur de 1 mm possède les qualités d'isolation acoustique et thermique et possède des propriétés antistatiques et antiallergiques.
De plus, il est également durable, décoratif et facile à entretenir. Le panneau de liège peut être utilisé comme revêtement mural, isolation sous parquet ou stratifié, ou pour le bricolage.
