Laser plastic welding
for bio-based materials

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Story

For FassiBottle's innovative, bio-based sports bottle, an automated laser plastic welding solution for the valve was developed.

Industry

Consumer goods

Material

Bio-based plastic PE-HD (sugarcane-based)

Process

Laser transmission welding: 980nm

The challenge

The original valve concept consisted of several separate parts (valve, seal, nut) and brought both manufacturing and functional challenges with it.

  • Complex manual assembly several separate parts and process steps
  • Increased manufacturing effort longer assembly times and higher costs
  • Can be opened by end users a risk to tightness and product safety
  • Not ideal for automation difficult to implement in series production
Finished welded bottle with the valve in place

The solution

Laser plastic welding bonds the valve directly and permanently to the bottle body.

  • Insert the valve Placing the valve into the bottle body
  • Position Precise alignment for a reproducible bond
  • Laser plastic welding Particle-free, fast and highly precise
  • Quality inspection Leak and visual inspection as part of the inline process

The process in pictures

  1. Punching the hole for the valve in the bottle body

    1. Punching the hole for the valve

  2. Inserting and positioning the valve

    2. Positioning the valve

  3. Laser plastic welding of the valve inside the machine

    3. Laser plastic welding for a permanent bond

  4. Manual visual inspection of the finished bottle

    4. Additional manual quality inspection

The results

Permanent bond

A non-detachable valve connection ensures maximum tightness and product safety.

Particle-free process

No contamination in the drinking system - ideal for food applications.

Automatable production

Short cycle times and high process speed for efficient series production.

Economical solution

Fewer spare parts, reduced assembly effort and lower costs

Transferable applications

Our solution suits many applications in which plastic components have to be joined permanently and safely.

Sports bottle by FassiBottle

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