RUBBER MANUFACTURERS
Controlling Cost and Rejection in a Rubber Products Factory
An OEM sends you a drawing for a moulded rubber part with a tight tolerance and a request for a sample in two weeks. Your mixing room has a batch waiting for a mould change, and the price of the base polymer went up again this month.
We cover costing by compound and cure cycle, planning of mixing and moulding, tracking of rejection and mould use, and OEM customer terms. Supervisors are coached to run the routines. Compounds, tolerances and quality testing stay with your technical team.
Discuss your priorities ↗COMMON CHALLENGES
The pressures
we often see.
- 01Compound cost depends on polymer, filler, chemical and mixing yield, and a small shift in any of them is not reflected in the part price.
- 02Mixing, curing and trimming run in batches, and one slow stage holds the rest, but nobody has a clear view of where the queue builds up.
- 03Rejections found at the customer, from flash, short fill or tolerance drift, come back as debit notes weeks after the batch is gone.
- 04Moulds wear and need repair, and a single worn cavity can slow output or raise rejection without anyone linking it to the repair schedule.
- 05OEMs ask for price reductions every year and pay on long terms, leaving thin margins and a heavy working capital load.
OUR FOCUS AREAS
Where the work
usually starts.
- 01A cost per kilo of compound and a cost per part with trim loss and rejection included
- 02A weekly plan for mixing, moulding, trimming and inspection showing the bottleneck stage
- 03Rejection data by defect type, mould, press and operator, kept per batch
- 04Mould register with cavities, shots run, repair history and owner
- 05Polymer and chemical stock, supplier lead time and price review date
- 06Customer-wise rate, price revision dates and payment days
- 07Sample and development work costed and tracked as a separate item
- 08Scrap, flash and regrind handling, and what each costs you
START THIS WEEK
Things you can do
before you call anyone.
- Take one top-selling part and trace its cost from compound to dispatch, including trim loss and rejects. Compare to the rate you charge. Note which input has moved since you last quoted.
- Hypothetical example: a part sells at ₹60 with ₹48 cost at zero rejection. With one in ten rejected, the cost per good part rises by about ₹5, so your margin falls from ₹12 to ₹7.
- List every debit note received this year with the batch number and reason. Group them by cause. Sit with the production head and agree on one fix to try first.
A PRACTICAL ENGAGEMENT
Start with the priorities
that matter most.
We begin by understanding how your business runs today, find the gaps, and agree the scope in writing. Recommendations are shaped around your team, your resources and your goals.
- A costing sheet that links compound cost to part price and flags when input cost changes
- A weekly production flow board from mixing to dispatch
- A rejection and debit note tracker by customer with batch reference
- A mould register and repair schedule owned by a named person
Not the right fit when: Not the right time if the central problem is a compound failure, a safety recall or a customer audit finding. Technical and quality specialists should lead there.
Explore a business audit ↗LET’S MOVE YOUR BUSINESS FORWARD
