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2. Bathtub - Wikipedia

   en.wikipedia.org/wiki/Bathtub

   In the 1960s fiberglass bathtubs became the standard [citation needed] for homes, being lightweight and inexpensive. James R. Wheeler and his brother Richard in 1979 adapted the acrylic being used for outdoor spas to make acrylic bathtubs. Working with Spartech Plastics, they developed the modern co-extruded and durable acrylic bathtub.

3. Vacuum forming - Wikipedia

   en.wikipedia.org/wiki/Vacuum_forming

   A simple visualization of the forming process Vacuum forming machine to produce inner liner/food liner of refrigerator. Vacuum forming is a simplified version of thermoforming, where a sheet of plastic in various forms of High Impact Polystyrene Sheet (HIPS) for low impact products, or ABS for bathroom shower trays, and HDPE for exterior vehicle parts, plus various other types of vacuum ...

4. List of polyurethane applications - Wikipedia

   en.wikipedia.org/wiki/List_of_polyurethane...

   Polyurethane foam made with an aromatic isocyanate, which has been exposed to UV light. Readily apparent is the discoloration that occurs over time. Custom-cast polyurethane objects. Polyurethane products have many uses. Over three quarters of the global consumption of polyurethane products is in the form of foams, with flexible and rigid types ...

5. Composite material - Wikipedia

   en.wikipedia.org/wiki/Composite_material

   Composite materials are used for construction and technical structures such as boat hulls, swimming pool panels, racing car bodies, shower stalls, bathtubs, storage tanks, imitation granite, and cultured marble sinks and countertops. [6] [7] They are also being increasingly used in general automotive applications. [8]

6. Fiberglass spray lay-up process - Wikipedia

   en.wikipedia.org/wiki/Fiberglass_spray_lay-up...

   To make shower bathtubs, a male mould is used. In the boating industry, a single-sided female mould made from FRP (fibre-reinforced plastic) is used to make yacht hulls. The outer shell of the mould is stiffened by a wood frame. The mould is made by taking the reversal of a male pattern. Several different hull sizes can be made using the same ...

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