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Facts about fibreglass mouldings

Posted by admin in Mold Wednesday, 16 March 2011 04:51 No Comments

Facts about fibreglass mouldings

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Home Page > Business > Facts about fibreglass mouldings

Facts about fibreglass mouldings

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Posted: Dec 18, 2009 |Comments: 0
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Fibre glass composites offer countless possibilities for creative, prefabricated projects. They are both light and hard wearing (they have even been used to make bullet-proof screens amongst the more unusual or little known uses for them) and can be moulded into almost any shape. Fibreglass – also known as GRP – mouldings use cut or woven glass fibres which are mixed with a plasticised resin and then used to line a mould. GRP stands for Glass Reinforced Plastic. Once the plastic has hardened, or cured, it can then be unmoulded and used straight away. The glass fibre used in GRP mouldings is available in a variety of formats. It can be used as cut strands which are mixed with resin and fired from a gun, or hand layered as mats or woven fabric. There are numerous special gels and metal powders you can buy to finish the piece, making it possible to create stunning objects d’art for the home, garden or workplace as well as a number of other uses. Casting GRP mouldings begins with a foam or wooden pattern, which is used to create a replica of the finished piece. From this, a production mould (also made from fibre glass) is constructed, and one or more fibreglass mouldings cast from that. Of course, it’s a lot more complex than that, but in essence this is what is done. Fibre glass composites offer countless possibilities for creative, prefabricated projects. They are both light and hard wearing (they have even been used to make bullet-proof screens amongst the more unusual or little known uses for them) and can be moulded into almost any shape. Fibreglass – also known as GRP – mouldings use cut or woven glass fibres which are mixed with a plasticised resin and then used to line a mould. GRP stands for Glass Reinforced Plastic. Once the plastic has hardened, or cured, it can then be unmoulded and used straight away. The glass fibre used in GRP mouldings is available in a variety of formats. It can be used as cut strands which are mixed with resin and fired from a gun, or hand layered as mats or woven fabric. There are numerous special gels and metal powders you can buy to finish the piece, making it possible to create stunning objects d’art for the home, garden or workplace as well as a number of other uses. Casting GRP mouldings begins with a foam or wooden pattern, which is used to create a replica of the finished piece. From this, a production mould (also made from fibre glass) is constructed, and one or more fibreglass mouldings cast from that. Of course, it’s a lot more complex than that, but in essence this is what is done. We at Fibreglass UK specialise in creating bespoke fibreglass mouldings for a range of applications, from architectural relief on old buildings, to body parts for racing cars. Anything that can be manufactured from natural materials can be recreated in fibreglass and made to look the same. You can even cast lifelike rocky boulders, “cavern” interiors and lifelike creatures – film crews and theme parks both rely heavily on GRP mouldings for their effects. Fibre glass composites offer countless possibilities for creative, prefabricated projects. They are both light and hard wearing (they have even been used to make bullet-proof screens amongst the more unusual or little known uses for them) and can be moulded into almost any shape. Fibreglass – also known as GRP – mouldings use cut or woven glass fibres which are mixed with a plasticised resin and then used to line a mould. GRP stands for Glass Reinforced Plastic. Once the plastic has hardened, or cured, it can then be unmoulded and used straight away. The glass fibre used in GRP mouldings is available in a variety of formats. It can be used as cut strands which are mixed with resin and fired from a gun, or hand layered as mats or woven fabric. There are numerous special gels and metal powders you can buy to finish the piece, making it possible to create stunning objects d’art for the home, garden or workplace as well as a number of other uses. Casting GRP mouldings begins with a foam or wooden pattern, which is used to create a replica of the finished piece. From this, a production mould (also made from fibre glass) is constructed, and one or more fibreglass mouldings cast from that. Of course, it’s a lot more complex than that, but in essence this is what is done. We at Fibreglass UK specialise in creating bespoke fibreglass mouldings for a range of applications, from architectural relief on old buildings, to body parts for racing cars. Anything that can be manufactured from natural materials can be recreated in fibreglass and made to look the same. You can even cast lifelike rocky boulders, “cavern” interiors and lifelike creatures – film crews and theme parks both rely heavily on GRP mouldings for their effects.

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The Article is written by fibreglassuk.com providing fibreglass mouldings and fibre glass Services. Visit http://www.fibreglassuk.com for more information on fibreglassuk.com Products & Services

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Fibreglass Moulding

Posted by admin in Mold Removal Thursday, 24 June 2010 16:54 No Comments

Fibreglass moulding is a process which enables the manufacture of specifically designed products from glass reinforced plastic; these moulded products can be manufactured for use in many industry sectors, such as, Construction, Leisure, Marine, Aerospace, defence, Automotive, and much more.

Fibreglass moulded products can be manufactured to meet most requirements and specifications, further-more these mouldings can be produced to any size, shape or colour with either a gloss, matt , smooth or textured finish, in some cases peripheral components can be incorporated into the moulding process, such as threaded inserts, these can be bonded into the product to provide a fixing solution, or metal work can be incorporated into the moulding to provide a mount for internal components such as electronics ect. During this innovative process additional reinforcements can be incorporated into specific areas which will be under load or receive additional stresses; this is done during the laminating process, when additional layers of reinforcement can be applied into the required areas, or structural sub mouldings can be bonded in, in short, fibreglass moulded components can be tailored to meet any requirement, but lets talk about the process that makes it all possible, Fibreglass moulding.

Fibreglass moulding is a process that starts off with the manufacture of a pattern also known as a plug or buck, this is a model made from Polyurethane foam, or MDF (Medium Density Fibreboard) or another material, this model will replicate the required product exactly, with regards to the dimensions and surface finish, once the pattern has be manufactured and prepared the mould can be manufactured from it, the mould can be male or female depending upon the design of the product.

The manufacture of the mould requires a certain amount of skill and understanding, its this experience that will enable the correct tooling materials to be chosen and employed during the mould construction, the mould may need to be more than one piece depending upon the design of the product (flash lines, undercuts, intricacy, ect, these are all things to contemplate) if the mould is to be more than one piece, then locators will be required on the flanges to ensure the mould section align.

Now the mould has been manufactured and allowed to cure, the pattern can be removed from the mould, the use of compressed air or wedges may be required to break the seal between these parts, once the pattern has been released, the mould can be prepared with several coats of mould release wax, remember before you run the mould an additional coat of PVA (Poly Vinyl Alcohol) release agent is also good practice and will help the first product to release from the mould with out the risk of sticking.

Now the mould is prepared and ready to go to work, its time to go Fibreglass moulding,

1. This starts with the mould being painted or sprayed with a gel-coat of the desired colour; the polyester gel-coat is the coating that will provide the pre-coloured finish to the moulded component.

2. Once the gel-coat has cured, a layer of glass fibre can be applied to the back of the gel-coat, the layer of glass-fibre is then saturated with resin, the saturated glass-fibre is then rolled with a special roller, this is to remove any trapped air, and to consolidate the glass-fibres, more layers of glass-fibre can be applied until the required thickness is achieved, the laminate is then left to harden and cure.

3. Once the laminate has cured, the product can be released from the mould, the product is normally left in the mould for twenty four hours, this ensures that the product has no imperfections, like, print through from the glass-fibre, shrinkage in the gel-coat ect, but remember, if there are any defects like the one’s just mentioned, these can all be rectified by a skilled operative.

Congratulations, you now have an understanding of Fibreglass moulding, a truly innovative process for manufacturing fibreglass components, and remember you probably see products every day made from fibreglass, but you didn’t realise it, that was until now!

About Author:

Richard Hayward from Fibreglass UK writes about FIBREGLASS MOULDING visit www.fibreglassuk.com for all your FIBREGLASS MOULDING requirements. The FIBREGLASS MOULDING is to be the same as the article title and click through to www.fibreglassuk.com

Fibreglass Mouldings

Posted by admin in Mold Tuesday, 22 June 2010 12:51 No Comments

Fibreglass mouldings are specifically designed products manufactured from glass reinforced plastic.

Fibreglass mouldings can be manufactured for most applications in industry, these industries sectors range from, construction, leisure, marine, aerospace, defence, automotive and much more.

Designers, architects, and end-users alike have found that Fibreglass mouldings has few constraints or limitations when it comes to design and can be manufactured to any size, shape, or colour required, these moulded components can display a superior moulded finish that can be made to replicate bronze, stone, wood, granite or any BS or RAL colour required, these great moulded finish’s can also be UV stabilised and can withstand environmental extremes when used for outdoor application, also, one of the great things that makes Fibreglass the material of choice is that it can be specifically tailored to meet the end users requirements, be it fire-retardantcy, chemical-resistance, corrosion resistance, or product that can be tailored to withstand specific loads and stresses, basically the applications for Fibreglass mouldings are varied, further more.

Fibreglass mouldings are manufactured with the aid of a mould, the mould is a reverse of the product, the mould can be male or female depending upon the design of the product, the mould is normally made from fibreglass, but can also be made from timber, latex rubber or metal, the mould will require several coats of a mould release agent, remember before you run the mould an additional coat of PVA (Poly Vinyl Alcohol) release agent is also good practice, this will enable the first product to release from the mould with out the risk of sticking.

Now the mould is prepared and ready to go to work, its time to manufacture a Fibreglass moulding,

1. This process starts with the mould being painted or sprayed with gel-coat of the desired colour; the polyester gel-coat is the coating that will provide the pre-coloured finish to the moulded component, the gel-coat is allowed to cure, but will remain tacky, this is good, the tacky finish will enable a good bond for the laminate,

2. Once the gel-coat has cured, a layer of glass fibre is then applied to the back of the gel-coat, the layer of glass-fibre is then saturated with resin, the saturated glass-fibre is then rolled with a special roller, this is to remove any trapped air, and to consolidate the glass-fibres, more layers of glass-fibre can be applied and consolidated until the required thickness is achieved, the laminate is then left to harden and cure.

As discussed at the beginning of this article, Fibreglass mouldings are manufactured for a wide variety of end user applications, some of which are,

Architectural components, Boat hulls and associated components, Water slides and Theme park rides, Motorcycle fairings, Lorry wind deflectors and body kits, Shower trays and Baths, Aircraft cowlings and components, Race car body work, Modular buildings, Walkways and Bridge cladding, Mobile phone mast enclosures, Airport furniture, Signage and Display, Train bodies and interior components,

And so on.

So whether you are a designer, architect or end-user and you require an innovative solution for your next project, the answer is simple, Fibreglass, this truly innovative material can be moulded to meet your requirements at an economic cost……

About Author:

Richard Hayward from Fibreglass UK writes about FIBREGLASS MOULDINGS visit www.fibreglassuk.com for all your FIBREGLASS MOULDINGS requirements. The FIBREGLASS MOULDINGS is to be the same as the article title and click through to www.fibreglassuk.com

Fibreglass Moulds

Posted by admin in Mold Saturday, 1 May 2010 00:58 No Comments

Fibreglass moulds are required for the production of fibreglass mouldings, but suppose you wanted to design and manufacture a boat hull, you would need to make a pattern also known as a plug or buck first, this is an exact model/replica of the end product, the pattern will have the exact dimensions and surface appearance of the finished product.

Once the pattern is made, it is prepared with several coats of mould release wax followed by a coat of PVA release agent, the pattern is now ready for the gel-coat to be applied, this will be painted or sprayed on depending upon the size of the mould to be made, but the gel-coat should be a tooling grade material and as such provide a long life for the production mould and good gloss retention, once the gel-coat has cured a second coat is applied and allowed to cure as well, the gel-coat will remain tacky, that is ok, the tacky surface of gel-coat will enable a good bond to the laminate to be achieved in the next process.

Now the gel-coat has cured but still a little tacky, the first layer of glass fibre is laid onto the back of the gel-coat and impregnated with resin, the saturated glass fibre is then rolled with a special roller to remove trapped air and consolidate the glass fibres, this initial layer is allowed to harden and cure, we call this process the first layer or skinning the mould, now the first layer has cured you can apply more layer of glass fibre impregnated with resin until the required thickness is achieved, these consecutive layers are also allowed to harden and cure, once these new laminates have cured the mould can be stabilised with either a timber or metal frame-work which is bonded to the back of the mould to keep it rigid and stable, but remember a mould can also be more than one piece, depending upon the design of the product (complexity of design , undercuts, flash line, ect) but if the mould is flanged into multiple pieces, you must ensure that locators are employed on all flanges to ensure all mould pieces align.

Now the mould is complete the pattern can be released, compressed air or wedges may be required to break the seal, once the pattern is released from the mould we start again by applying several coats of mould release wax to the new mould, remember its good practice to apply PVA release agent to the mould face of the new mould for the first pull, this will ensure that the first fibreglass product will come out with out sticking.

Also fibreglass moulds are manufactured for moulding products in pre-cast concrete, these moulds are called pre-cast concrete moulds, and are used to produce paving slabs, sea-defence sections and components that are to intricate for the mould to be formed in timber, in short fibreglass moulds come in all shapes and sizes and are used to manufacture products for a wide range of applications in industry, some of these products range from,

Boat hulls and associated components, water slides and theme park rides, architectural columns and arch’s, Lorry wind deflectors and body kits, airport furniture, pre-cast concrete moulds, wind turbine blades, planters, enclosures, shower trays and baths, modular buildings, machine guards and covers, and so much more…

Congratulations, you now have a brief understanding of fibreglass moulds, and the process’s employed to manufacture a basic mould, but you must also be mindful of material choice and mould design, as discussed before, some moulds will need to be more then one piece and hence need to be flanged into multiple pieces, so design criteria at the product stage is key, but don’t be put off by this, fibreglass is a great composite material that allows designers the scope to achieve products that are stunning and cost effective.

About Author:

Richard Hayward from Fibreglass UK writes about Fibreglass moulds visit www.fibreglassuk.com for all your Fibreglass moulds requirements. The Fibreglass moulds is to be the same as the article title and click through to www.fibreglassuk.com

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