Battery Boxes 5 mm polypropylene Supplier for Defence And Security Equipment Equipment

These polypropylene battery boxes are thick gauge vacuum formed parts supplied to drawing for defence and security equipment. They are formed from polypropylene sheet at 5 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
• polypropylene keeps the weight down while stiffness is held through the formed shape
• Mould texture 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
• dimension reports with every release

Typical applications

• console covers
• case shells
• transport trays
• antenna covers
• battery boxes used across general defence and security equipment builds

How it is made

1. Sheet is dried when the material needs it, then heated to forming temperature on the machine.
2. The part cools on a jig so the shape is held while the material stabilises.
3. The sheet is formed over the mould with vacuum and, where the draw is deep, with plug assist.
4. Trimming is done on 5-axis routers or with a dedicated trim fixture to meet the drawing.
5. Parts are inspected, fitted with inserts or hardware if required, packed and shipped.

Material: polypropylene

Polypropylene survives repeated impact and most cleaning chemicals. Its low forming temperature keeps cycles short, but it shrinks more, so the mould is cut with the shrink factor built in.

Design notes

• avoid sharp steps in the mould, which show as chill marks on the finished surface
• plan the trim line on a flat face so the router can hold tolerance
• call out the finish on the drawing: mould texture, paint, or as-formed gloss
• hold the draw ratio near 1:1 for deep parts, or specify plug assist

Finishing and assembly options

• mould texture
• anti graffiti coating
• UV stabilised as formed
• Threaded inserts, PEM fasteners and brackets fitted before dispatch
• Mating parts can be trial assembled before the first article ships

Quality

Sheet thickness is checked on the formed part at the points shown on the drawing, and the readings go into the report. Moulds, trim fixtures and programmes are stored against the part number, so a repeat order matches the first batch.

• RoHS compliant grades available
• UL94 V-0 grades available
• material certificates with every batch

Packing and delivery

Large panels are crated in made to measure wooden cases with corner protection. Standard lead time to first article is 3–4 weeks, 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.

Are spare parts available later?

Tooling is stored against the part number for the life of the programme, so replacements or spare panels can be released at any time.

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 battery boxes 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.