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We process plastic sheets, which are as follows:
- PET sheets,
- PVC sheets and film,
- HIPs high impact polystyrenes,
- ABS sheets,
- polypropylene film,
- solid and cellular polycarbonate sheets and others.
Other thermoplastics - description of thermoplastics
Styrene-Acrylonitrile (SAN)
Properties
Compared with PS, it has higher stiffness and toughness, is hard, transparent, can tolerate temperature changes well, can be easily dyed, and has a glossy surface. It resists acids, alkalis, fats, oils, alcohol and gasoline. It has better hot dimensional stability than PS, significantly better corrosion resistance under stress and weathering. Dielectric properties are inferior, absorbency higher. It is not harmful to health.
Uses
Bodies and transparent covers of kitchen appliances, blender containers, bathroom sets, beverage cups, hiking utensils and cutlery, spices, handles of brushes and toothbrushes, transparent covers of gramophones, covers of car taillights, transparent scales of radios, drawing templates, handles of ballpoint pens, rotors of table fans.
Identification
It is relatively easy to ignite, burning with a yellow flame as soot develops. Cracks brittle when subjected to bending stress.
Acrylonitrile butadiene styrene terpolymer (ABS)
Properties
Many types are produced, varying in stiffness and temperature resistance. This is achieved by varying the ratio of copolymerizing components. It is stiff, strong and yet tough, even at reduced temperature. Special types can be used down to -40 °C. Good shock and vibration absorption. Temperature resistance and dimensional stability under heat are better than PS and SAN, as well as corrosion resistance under stress. Tolerates alternating temperatures. Electrical insulation and dielectric properties are inferior, it is slightly wetted. It is only slightly charged by static electricity. Weather resistance is limited, it is non-hazardous, special types can be electroplated. It is flammable. Resists acids, bases, oils, fats, some hydrocarbons, but not chlorinated and aromatic hydrocarbons, esters and ketones.
Uses
Household appliance covers, telephone instrument bodies and handsets, pocket calculator bodies, microphone and alarm clock bodies, lamp bases, bread slicer and kitchen scale bodies, toys, e.g. Model cars, weapons, protective sports helmets, tool handles, bicycle chain covers and fenders, lawn mower covers, child seats, car radiator and heater grilles, decorative grilles, headlight housings, portable tool boxes, bathroom fittings for electroplating, vacuum cleaner and hair dryer covers.
Identification
As with PS: - burns with soot development, odor is less aromatic, some types are self-extinguishing.
Machinability
It is good, but worse than PS. ITT is quoted for a temperature of 200 °C and a load of 212 N. It comes in a wide colour scale but is opaque. Under bending stress it either fails to crack or cracks with a tenacious fracture.
Strengthened polystyrene (PS, HPS boards, HIPS)
Properties
It is a copolymer of styrene with butadiene. As the rubber component content increases, the strength, hardness and stiffness decrease and the ductility and impact toughness increase, the dielectric properties and chemical resistance slightly deteriorate. It resists acids, alkalis, fats, oils, alcohol and salt solutions, and does not resist chlorinated and aromatic hydrocarbons, ketones and esters. It is not transparent, but only translucent, and is coloured with opaque paints.Absorbency is somewhat higher than PS.
Uses
Food boxes, camping utensils, furniture parts, e.g. Table drawers, refrigerator trays, clothes hangers, automobile wheel covers, magnetic tape cartridges, internal parts of telephone equipment, radio and television equipment cabinets, camera housings, film reels, switches, handling boxes and crates, flower pots and flower pot trays.
Identification
Burns while soot is developing, turns white at the bend and usually will not crack. If it does, it will fracture tenaciously.
Polyethylene terephthalate (PET)
Characteristics
Thermoplastic polyethylene terephthalate (PET) is a plastic belonging chemically to polyesters. In terms of the chemical principle of polymerization, polyesters are classified as polycondensates, similar to polyamides or phenolic resins. Most polyesters are not typical thermoplastics and are rather known as reactive resins (reactoplastics, formerly known as thermosets) or fibrous materials. Also, PET itself was originally developed to produce high-quality fibers. In the last three decades, the field of practical applicability of this polymer has expanded significantly. Currently, polyethylene terephthalate is still typically used as a fiber material, but much larger volumes are intended for processing into foils (packaging materials, film mats, magnetic recording materials), hollow packaging, and its use as a construction material is also expanding more and more, especially in in the form of composites.
Chemical structure
PET is a semi-crystalline polymer that is practically used mainly in its amorphous form.
Advantages
Amorphous PET is characterized high toughness while maintaining relatively high stiffness. A highly valued property of PET is its low gas permeability, the so-called barrier ability, which is practically used in the production of packaging.
Polycarbonate (PC)
Usage
Polycarbonate is a technical plastic, which is used in practice in the form of semi-finished solid plates, cellular plates or for application by injection in the form of granules. It is suitable for demanding technical applications such as machinery safety covers and the like. Cellular polycarbonate is mainly used in the construction industry as a plastic for covering conservatories, covering swimming pools, etc.Thermal forming
Polycarbonate films and sheets can also be thermally formed. The heating temperatures vary between 170 and 200 °C, optimally around 180 °C.The heating time depends on the number and power of the heating elements, the distance between the plate and the radiators and the ambient temperature.
Machining
Polycarbonate can be machined well. For this purpose, various semi-finished products in the form of rods, tubes, plates are supplied. During machining, the surface may whiten due to heating of the product by frictional heat, or the consequences of frozen stresses may appear in the form of numerous surface cracks. Therefore, the machining speed must be carefully adjusted and the cutting tools must be cooled.Gluing
We can print, paint and metallize polycarbonate products. Joining is done by welding or gluing. Solvents based on chloromethane or chloroethane are suitable for gluing polycarbonate. Two-component adhesives, e.g. epoxy, are most suitable for bonding polycarbonate with other plastics. Instant cyanoacrylate adhesives can also be used.Welding
The use of ultrasound is suitable for welding polycarbonate. Very short times, often less than 1 second, are sufficient to perfectly connect the welded parts. Therefore, this technique is expanding rapidly today. During welding, internal stresses are created, therefore it is necessary to end the welding by tempering.Optics
The use of polycarbonate in optics is especially widespread. These are structural parts of cameras, cameras, flashes, projectors, binoculars, their cassettes, viewfinders, apertures, etc. Light guides and optical systems are made from polycarbonate. Today, perhaps the most important optical application of polycarbonate is the production of optical discs - CDs, which combine excellent optical properties with mechanical strength and toughness.Transportation
In transport technology, the transparency of polycarbonate products is used in the production of lamp covers, car lights, direction indicators, signal lights or various transparent covers for indicators and counters. Its transparency combined with impact resistance is used in protective helmets and glasses.Machine parts
The excellent mechanical properties of polycarbonate, especially its toughness and strength, are also used in engineering applications. It is used for numerous demanding parts of pumps, valves, fans, pneumatic distributions, sight glasses, control buttons, handles of hand-held machine tools, drills, grinders, etc.Construction
In the construction industry, polycarbonate films and plates are also used as an aesthetic element. They are used wherever they replace classic glass. Compared to glass, polycarbonate stands out for its increased resistance to impact, i.e. unbreakability. It is used for all kinds of roofing, windows, doors, covers for swimming pools, halls or stadiums. Cellular boards are used here with great success.Polyvinyl chloride not softened (PVC)
Properties
It is an amorphous thermoplastic, hard, stiff, solid, brittle at temperatures below -5 °C, its temperature resistance is only 60 to 70 °C, electrical insulating properties are good, dielectric properties are worse. It is translucent to transparent, self-extinguishing, does not get wet. It resists acids, alkalis, fats, oils, alcohols and gasoline, it does not resist chlorinated and aromatic hydrocarbons, esters and ketones. Can be dyed well.Usage
Pipe fittings, e.g. elbows and branches, wiring boxes, tanks and sumps for waste water, covers for electrical devices and fans, shaped parts of roof gutters.Identification
It burns poorly, the flame is colored green at the edge, it sputters (sparkles) a little, it goes out when the flame is moved away, it is self-extinguishing. The smoke smells strongly of hydrochloric acid. Turns white under bending stress.Workability
It is difficult due to low fluidity and high susceptibility to thermal degradation during processing. Fluidity depends on molecular weight and both are judged by the so-called K-value. The higher the K-value, the higher the molecular weight and the worse the fluidity, but the mechanical and electrical properties are better. In the case of granulate, the fluidity is also indicated using ITT. Workability is improved by the addition of small amounts of plasticizers.Non-binding enquiry
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Why cooperate with us
- Czech companyWe are engaged in the production,
processing and sale of plastics.
For more than 30 years. - Custom processingWe search for the best solutions
for your needs. Thanks to which we
save your time and money. - Experienced teamWe work on modern
certified machines. Our team
has about 45 specialists. - Reliable deliveryWe process small
and large-scale commissions. We are your
partner in plastics.
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