How to produce fiberglass shampoo bed?

The following is the detailed production process of the original fiberglass reinforced plastic (FRP) shampoo bed, which combines design, material selection, and process steps:

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1、 Design phase

1. Requirement analysis

-Clearly define the functional requirements of the hair washing bed, such as drainage system, ergonomic curvature, and load-bearing capacity.

-Determine the usage scenario (beauty salon, hair salon, or home), size, and style (modern, minimalist, or customized styling).

2. * * Structural design**

Use CAD or 3D modeling software to draw a three-dimensional diagram of a hair washing bed, with a focus on designing:

Drainage channel: inclined angle and diversion path to prevent water accumulation.

Neck depression area: ergonomically curved to enhance comfort.

Supporting structure: bed thickness and reinforcement rib layout (usually grid like or ribbed structure).

3. * * Mold Design**

-Disassemble demouldable components based on the 3D model, such as the main body bed and drainage cover plate.

-Mold material selection:

-* * Master mold * *: high-density foam engraving or wood mold (the surface needs to be polished several times to be smooth).

-* * Splitting line * *: Designed in a non prominent location for easy post-processing.

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2、 Mold making**

1. * * Mother mold processing**

-Seal holes on the surface of wood mold/foam mold (apply epoxy primer+putty to fill the holes).

-Polish to mirror effect (gradually polish with 2000 grit sandpaper).

2. * * Silicone overlay mold**

-Apply a silicone layer (thickness 5-8mm) to capture details, and use it as a soft mold after curing.

-The outer layer is made of gypsum or fiberglass to support the shell (to prevent deformation of the silicone).

3. * * FRP mold turning**

-Apply release agent (such as polyvinyl alcohol PVA) on the surface of the silicone mold.

-Hand lay 3-4 layers of glass fiber (300g/m ² short cut felt+resin), cure to form a rigid mold.

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**3、 Production of fiberglass shampoo bed**

**Material preparation**

-Resin: Unsaturated polyester resin (with good water resistance) or vinyl ester resin (with high corrosion resistance).

-* * Reinforcement Material * *:

-Surface layer: 30g/m ² fiberglass surface felt (to prevent the resin layer from being exposed).

-Structural layer: alternating layers of 300g/m ² short cut felt and 600g/m ² square cloth (thickness according to load-bearing design, usually total thickness ≥ 4mm).

-* * Auxiliary materials * *: cobalt based accelerators, methyl ethyl ketone peroxide (MEKP) curing agent, color paste, release wax.

**Hand lay up molding process**

1. * * Apply release agent**

-Apply release wax (such as No.8 wax) evenly on the surface of the mold, repeat 3 times and polish until there is no residue.

2. * * Coating layer spraying**

-Spray colored adhesive coating with a spray gun (thickness 0.4-0.6mm) and cure it to a semi adhesive state (about 30 minutes).

3. * * Layering operation**

-* * First layer * *: Lay 30g surface felt and brush resin to soak (eliminate bubbles).

-Structural layer: alternately lay short cut felt (to increase resin content) and grid cloth (to increase strength), and compact each layer with rollers to remove bubbles.

-* * Key area strengthening * *: Add 2-3 additional layers of checkered fabric in the neck support area and edges.

4. * * Curing**

-Cure at room temperature for 24 hours, or accelerate curing in a 60 ℃ oven for 2-3 hours.

-Test the Barcol hardness (≥ 40 is qualified).

5. Demoulding and trimming**

-Gently tap the edge of the mold with a wooden wedge to separate the components, remove them, and cut off the burrs.

-Polish the parting line with sandpaper (80 grit → 400 grit → water mill until smooth).

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**4、 Integration of functional components**

1. * * Installation of drainage system**

-Install PVC drainage pipes (diameter ≥ 32mm) through openings, and seal the joints with silicone.

-The cover plate is designed with a detachable filter screen to prevent hair blockage.

2. * * Accessory assembly**

-Embedded stainless steel bracket (connected to headrest adjustment device).

-Install waterproof cushion (PU leather wrapped with high-density sponge, edge heat sealed waterproof).

3. * * Surface treatment**

-Spray polyurethane matte varnish (scratch resistant, easy to clean).

-UV printing personalized patterns (optional).

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**5、 Quality inspection**

1. * * Strength testing**

-Static load-bearing capacity ≥ 150kg (simulating human body weight without deformation after 8 hours of compression).

2. * * Sealing test**

-Fill the drainage tank with water and check for leakage and drainage speed (≥ 1L/10 seconds).

3. * * Security testing**

-Edge chamfer R ≥ 2mm to prevent cuts.

-Formaldehyde emission (≤ 0.1mg/m ³, GB 18587-2017 standard).

**Precautions**

-Ventilation and protection: The operating room requires forced ventilation, and workers should wear gas masks and nitrile gloves.

-Resin ratio: The amount of curing agent added is 1.5% -2.5% (in a 25 ℃ environment), and the amount used is reduced by 0.3% per liter at a temperature of 10 ℃.

-Waste disposal: The solidified fiberglass scraps are classified and recycled as industrial solid waste.

Through the above process, the production of original designed, high-strength, and durable fiberglass hair washing beds can be achieved, meeting the long-term usage needs of commercial scenarios.