12 mm PMMA acrylic Hoods Manufacturer for Water Treatment

These PMMA acrylic hoods are thick gauge vacuum formed parts supplied to drawing for water treatment. They are formed from PMMA acrylic sheet at 12 mm, trimmed on 5-axis routers and inspected against the drawing before packing. Buyers choose this route where a metal fabrication is too heavy, or where injection moulding tooling cannot be justified for the volume.

Product specification

Key features

• One piece shell replaces a fabrication, so assembly hours drop
• PMMA acrylic keeps the weight down while stiffness is held through the formed shape
• Satin finish finish as standard, further finishes on request
• Trimmed on 5-axis routers, so mounting holes and cut outs match the drawing
• Tooling stored against the part number for repeat and spare orders
• food contact declarations available

Typical applications

• dosing tank liners
• channel covers
• control panel shells
• filter housings
• hoods used across general water treatment builds

How it is made

1. Sheet is dried when the material needs it, then heated to forming temperature on the machine.
2. Drawings are reviewed and a manufacturability report is issued with wall thickness, draft and radii marked up.
3. Trimming is done on 5-axis routers or with a dedicated trim fixture to meet the drawing.
4. Parts are inspected, fitted with inserts or hardware if required, packed and shipped.
5. Tooling is cut: aluminium for production volumes, composite or printed moulds for samples and first articles.

Material: PMMA acrylic

PMMA gives the glossiest surface and the best UV stability, which is why it is used for light housings and outdoor sign faces.

Design notes

• add ribs or returns instead of increasing sheet thickness to save weight and cycle time
• keep a draft angle of at least 3 degrees on vertical walls so the part releases cleanly
• use corner radii of at least three times the sheet thickness to avoid thinning
• avoid sharp steps in the mould, which show as chill marks on the finished surface

Finishing and assembly options

• satin finish
• two coat polyurethane paint
• anti static coating
• Threaded inserts, PEM fasteners and brackets fitted before dispatch
• Mating parts can be trial assembled before the first article ships

Quality

Moulds, trim fixtures and programmes are stored against the part number, so a repeat order matches the first batch. First article inspection covers critical dimensions, wall thickness, colour and texture against the approved sample.

• food contact declarations available
• ISO 9001 quality system
• PPAP or ISIR on request

Packing and delivery

Each part is bagged, edges protected with foam, then cartonised for container loading. Standard lead time to first article is 7–15 working days, and repeat releases ship against stored tooling without a new proving run.

Frequently asked questions

What quantity can I order?

Sample quantities start at one piece off printed tooling. The process pays back from about 25 pieces a year and runs well into several thousand.

Can you make it in another material?

Any grade in this family can be swapped in. Send the requirement and the material will be quoted with the price difference shown.

How fast is the first article?

Seven to fifteen working days from drawing release for sample tooling, with production tooling in three to four weeks.

Request a quotation

Send the drawing or a photo of the current hoods with the quantity and the finish required. The reply covers material choice, wall thickness, tooling route and price, so the decision is made on a complete picture.