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Engineering Plastics

Engineering Plastic Machining Services

Read More About Our Engineering Plastics Machined Component Parts

Engineering Plastic Sheet Cutting, CNC Routing

Fabrication Engineering Plastic Custom Parts

Without doubt, the company is one of the UK’s leading Engineering Plastic CNC Machining Companies. Certainly, Sentinel Plastics is a hugely experienced UK company that machine custom engineering plastic parts. Thus, customers return year after year for all there Machined plastic Parts .

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Certainly, Since its inception in 1989, Sentinel Plastics has constantly updated its Machining and fabricating capabilities to facilitate all types of industrial plastic parts requirements. Priding themselves on supplying precision, high quality Plastics components. Also, backed up by competitive prices, short lead times with a reliable and flexible service.

Below are just some of the Engineering plastic materials CNC machined.

PVC (Polyvinyl Chloride) Engineering Plastics
Engineering Plastics PVC is rated Self-Extinguishing, has an exceptional chemical resistance with high mechanical and tensile strength.

ABS FAbrications ABS (Acrylonitrile Butadiene Styrene)
A rigid, hard wearing thermoplastic material.

Nylon (Polyamide) Engineering Plastics
A range of grades available Including Extruded and Cast Nylon 6, Nylon 66, MOS2 (Molybdenum Disulphide) filled.

Engineering Plastics

Acetal (Polyoxymethylene, POM) Engineering Plastics
Available in Copolymer and Homopolymer grades. A dimensionally stable material with good electrical properties and abrasion resistance.

Polypropylene (PP)
A very versatile Engineering Plastics that has many advantages, namely acid resistance, light weight with high impact resistance.

Polyethylene (LDPE, HDPE, HMWPE, UHMWPE)
A range of polyofins Engineering Plastics also referred to as PE300, PE500 and PE1000. Used in various applications from pipe fittings, wear strips to conveyor systems in food processing environments.

Engraving Laminates Engineering Plastics
A range of 2 or 3 ply laminates in many different colours.

Clear Engineering Plastics

Virtually all Industrial Engineering Plastics Materials available today can be Machined and Fabricated at Sentinel.
Offering customers a wealth of knowledge in the huge range of plastic materials in sheet, rod, fabricated and machined form. .

Polycarbonate Fabrication - Engineering Plastics - Plastic Machining

Polycarbonate Bespoke guarding

Polycarbonate Makrolon ® Lexan ® Engineering Plastics
Used for machine guards and shrouds, available in clear, opal and tinted also specialist Abrasion and UV resistant grades available.

PETG (Polyethylene Terephthalate Glycol) Engineering Plastics
Sheets have very good impact resistance, even at low temperatures, and approved for food contact applications.

Acrylic (PMMA) Engineering Plastics
Available in Clear, Opal and many colours, extensively used for Point of Sale and Display applications.

High Performance Materials

PTFE (Polytetrafluoroethylene) Engineering Plastics
Very good resistance to low and high temperature (up to 260°C), with low flammability and low friction coefficient. Available in a variety of filled grades.

PEEK (Polyetheretherketone) Engineering Plastics
Excellent mechanical strength, dimensional stability, a low coefficient of friction, very good chemical resistance.

PVDF (Polyvinyl Fluoride) Engineering Plastics
Good chemical resistance with a temperature range -30°C to +150°C

Ultem ®

Ultem ® is a high-strength amorphous polymer with excellent heat and flame resistance, (carrying a flammability rating of 94-V-0) with little smoke output. Furthermore, it performs continuously to 340° F, making it superior to commodity plastics such as Nylon and Delrin®.

Take A Look At Our Main Engineering Plastics Processes

Plastic Machining | Plastic Milling

Plastic Routing | Plastic Turning | Plastic Fabrication

Established in 1989 Sentinel Plastics Ltd is an Industrial Engineering Plastics Machining and Fabrication company. With a long history and much accumulated knowledge Sentinel Plastics Ltd has always moved with the times.

Sentinel Plastics Ltd is a well-established Engineering Plastics Supplier CNC Machining and Plastic Fabrication company based in Cradley Heath in the West Midlands. Sentinel Plastics Ltd has an already large customer base, which includes many long-term blue-chip customers. At present it is amidst a very successful marketing period, and so is currently attracting large amounts of extra business.

Our capacity includes but is not limited to the following: 8 No CNC Machines which includes Mazak VCN 530C + 5 No XYZ 1020 VMC + 2 Bridgeport’s VMC + 2 ProTurn Lathes + 1 Mazak Mill/Turn.

A little more on Engineering Plastic

Being more expensive, Engineering Plastics are produced in lower quantities and tend to be used for low-volume applications.

The term usually refers to thermoplastic Materials rather than thermosetting ones. Examples of Engineering Plastics include acrylonitrile butadiene styrene (ABS), used for car bumpers, dashboard trim and seating; polycarbonates, used in guarding; and polyamides (Nylon), used for bushes and bearings.

Engineering Plastics have gradually replaced traditional Engineering Materials such as wood or metal in many applications. Besides equalling or surpassing them in weight/strength and other properties. Engineering Plastics are much easier to manufacture, especially in complicated shapes.

Engineering Plastics – Thermoplastic – Ref Wikipedia

A thermoplastic, or thermosoftening Plastic, is a Plastic material, a polymer, that becomes pliable or moldable above a specific temperature and solidifies upon cooling.

Most thermoplastics have a high molecular weight. The polymer chains associate through intermolecular forces, which weaken rapidly with increased temperature, yielding a viscous liquid. Thus, thermoplastics may be reshaped by heating and are typically used to produce parts by various polymer processing techniques. Thermoplastics differ from thermosetting polymers, which form irreversible chemical bonds during the curing process. Thermosets do not melt when heated: they decompose and do not reform upon cooling.

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