Sustainability & Responsible Manufacturing

PLASTIC SCRAP GRINDING & APPROVED REUSE

Turning Selected Plastic Scrap Into Regrind

Plastic rejects and sprues/runners from production can be mechanically ground into smaller pieces known as regrind.

At KingDa, this material is reused only when it meets the project requirements and its use has been confirmed for the order.

Follow the grinding and reuse process

Plastic grinding equipment in KingDa’s workshop.

How Plastic Scrap Becomes Regrind

The workshop photograph shows our equipment. The process illustrations below explain the inputs, cutting action and resulting material.

Review the Plastic Scrap

Identify the selected rejected plastic parts or sprues/runners and the material source.

Grind Mechanically

Reduce the selected plastic scrap to smaller pieces using mechanical cutting.

Collect the Regrind

Collect the resulting flakes or regrind for review before any proposed reuse.

Assess Suitability

Check the material, part and order requirements and the supporting information.

Confirm Before Reuse

Use the regrind in production only when it meets project requirements and has been confirmed for the order.

Illustrated examples of molded parts, sprues and runners, bottles and sheets before crushing. — Process illustration — plastic scrap inputs

Process illustration showing a machine used for mechanical size reduction of plastic scrap. — Process illustration — plastic grinding equipment

Process illustration showing cutting blades used for mechanical size reduction. — Process illustration — cutting blades

Side-by-side illustration of plastic scrap before and after mechanical crushing. — Process illustration — before and after grinding

Process illustration showing several examples of crushed plastic flakes. — Process illustration — resulting regrind

Illustrated inputs are general examples of plastic scrap. Suitability for a KingDa project is assessed separately.

Not all rejected parts or production scrap are suitable for reuse. Grinding changes the material’s size; the proposed reuse still needs to meet the part and order requirements.

Before Regrind Is Used Again

Material Identity & Source

Identify the resin and material source. Confirm which scrap belongs to the material reference being reviewed.

Material Condition

Review condition, foreign material and any separation needed for the proposed use.

Part Requirements

Review the agreed appearance, fit, functions and intended-use requirements for the part.

Agreed Use & Records

Confirm how the regrind may be used for the order, and keep the approval with the relevant material or sample reference.

Use the material requirements checklist to describe the part, then agree the inspection reference and checks for the proposed use.