Creating a lean value chain cut $1 million in inventory cost, raised fill rates and sharpened forecasting.
To meet sales targets, marketing-pushed, end-of-quarter promotions trained customers to wait for discounts and stockpile products. Promotions stimulated orders, creating the typical peaks and valleys in volume, but it was impossible to determine if these efforts were boosting overall sales. Smaller customers were forced to buy full-pallet quantities that would take months for them to sell. Manufacturing was forever playing catch-up because its production schedule was based on the sales forecast, a subjective and error-prone target in any business. In some cases, the company received valuable point-of-sale data from customers, but nobody was even looking at it.
Challenge: One business segment needed to reduce inventory levels and improve forecast accuracy in order to become the one-stop source for packaging products in a highly competitive, cost-critical market.
To overcome such obstacles and get things moving in the right direction, the company engaged TBM Consulting Group, which pulled together a cross-departmental team who represented the value stream—the flow of both materials and information—for a single product family spanning multiple facilities.
Solution: A thorough analysis of demand patterns accelerated the adoption of a demand-based replenishment system. Statistical forecasts incorporated promotion and point-of-sale data. SKU rationalisation eliminated slow-moving, highly volatile products.
The team identified three key initiatives offering a high impact and a low to a medium difficulty level that would deliver rapid improvement. After performing a thorough demand analysis, the team determined that a higher percentage of products than previously thought could effectively be managed by a pull system. Almost 75% of products were a good candidates for pull. In the end, even though there was less inventory in the supply chain, fill rates improved from around 97.7% to over 98.5%.
The second key initiative was to establish a standard forecasting process. In addition to implementing a statistically based forecasting method, they began to factor in point-of-sale data and upcoming trade promotions into their calculations. The team developed an 18-month, rolling forecast with weekly projections for the coming three months, and monthly expectations after that. Forecasting accuracy improved from around 55% to upwards of 75%. On the distribution side, the organisation had always struggled to allocate inventory between five regions throughout the United States.
The third recommendation focused on 225 highly volatile SKUs (out of 570 total). Dictated by large lot sizes, it made no sense to build and stock so much inventory for these products, which sat in storage for 75 days on average. The team determined that 45 of these low-volume, highly variable products could be eliminated or substituted with higher-volume SKUs. Producing the remainder on a make-to-order basis could further improve material flow and smooth out production.
Results: Pull system reduced inventory by $1 million for a single product line and improved case-fill rates from 97.7% to 98.5%. Shipping orders direct also reduced inventory, related transportation and carrying costs. Improved forecast accuracy from 55% to 75%.
This supplier of food service packaging has begun to break free from its traditional supply chain structure. Customer demand drives replenishment, pulling products from distribution centres and factories. Manufacturing is no longer churning out highly volatile products in large batches. Forecasts aren’t based exclusively on historical data and salespeople’s hunches. Inventories are on the decline, fewer items are out of stock, and there are fewer obsolete products sitting around in the distribution centres.
With production driven by direct signals from the customer, manufacturing managers had to learn to think differently about the sales forecast. Going forward, it would be used to plan capacity and resources, but not for actual scheduling.