Plastic Manufacturing Software India — BOM, Granule Tracking & GST Billing

• Define granule consumption (in grams or kg) per piece for every mould and product variant
• Supports different colour variants with different masterbatch quantities in the same BOM
• Update BOM anytime when mould cavitation, shot weight, or material spec changes

In plastic manufacturing, the Bill of Materials is defined at the mould level — every mould produces a specific product at a specific shot weight using a specific polymer grade and colour. A 500ml water bottle mould might use 18 grams of natural HDPE per piece plus 0.5 grams of white masterbatch. A 1-litre oil container mould uses 45 grams of natural HDPE plus 1.2 grams of black masterbatch. Stock Register lets you create a separate BOM for every product and colour variant you manufacture. When you raise a production order for 10,000 water bottles, the system automatically calculates: 180 kg of natural HDPE and 5 kg of white masterbatch — and checks whether sufficient stock is available in your granule store before you confirm.

• Create shift-wise or batch-wise production orders specifying product, mould, and quantity
• System auto-calculates total granule consumption from your BOM for the production quantity
• On confirmation, granule stock reduces instantly and finished goods are added to inventory

Plastic production runs continuously — injection moulding machines run in shifts, producing thousands of pieces per shift. Tracking raw material consumption manually per shift leads to cumulative errors that are impossible to reconcile at month-end. Stock Register lets you create production orders per shift or per batch. Select the product and mould, enter the quantity produced, and confirm. The system calculates total granule and masterbatch consumed based on your BOM gram-per-piece data, and automatically deducts these quantities from your raw material godown. At the end of each shift, your granule inventory is always accurate without any manual register entry.

• Record runner, sprue, and rejected piece weight separately per production batch
• Add regrind/recycled material back to raw material inventory at correct value
• Track scrap percentage per mould to identify tooling issues or process deviations

Scrap and regrind management is a significant cost factor in plastic manufacturing. Every injection moulding cycle produces runners and sprues that need to be re-granulated and re-used. Rejected pieces add to the scrap pile. Without tracking this, you cannot accurately calculate your actual granule consumption per good piece — and over-reporting consumption covers up process inefficiencies or material pilferage. Stock Register lets you record scrap weight separately when confirming a production order. Regrind can be re-entered into inventory at a specified quantity and value. Month-end scrap reports show scrap percentage per mould and per shift — making it easy to identify which moulds or machines are generating excess waste.

• Track polymer granules, masterbatches, additives, and pigments by kg in separate godowns
• Low-stock alerts on every raw material so you can place purchase orders before production stops
• Real-time stock value report showing current granule inventory cost at purchase price

Plastic raw material management is primarily weight-based — polymers like HDPE, PP, PVC, and ABS are purchased and consumed in kilograms. Masterbatches, additives, and stabilizers are also tracked by kg or grams. Stock Register stores all raw material quantities in your preferred units and calculates stock value based on the average purchase price. You can create separate godowns for your granule store, your machine-side material hopper tracking, and your finished goods area. The raw material stock report shows current quantity in kg and total value for every polymer grade and masterbatch in your store — essential for insurance valuation, bank reporting, and cost control.

• Record plastic components sent to painting, UV coating, printing, or assembly contractors
• Track quantities received back after secondary operations with job worker receipt entries
• Outstanding ledger per job worker — know exactly what is pending and for how long

Many plastic product manufacturers outsource secondary operations — screen printing on bottles, UV coating on automotive parts, spray painting on plastic components, or assembly of plastic sub-assemblies into finished products. Without a system to track what was sent and what came back, material leakage is inevitable. Stock Register's job work module creates a complete digital record of every transaction with every job worker. When you send moulded parts to a printing contractor, you issue a job work challan. When printed parts return, you record a receipt. The software maintains a running outstanding balance for every job worker so you always know exactly how many pieces are pending at each contractor's premises.

• Create GST invoices for plastic products with correct HSN codes (Chapter 39) and 18% / 12% rates
• Manage polymer and masterbatch purchase bills with input GST credit tracking
• Generate GSTR-1 and GSTR-2 reports ready for filing at month-end

Plastic products fall under HSN Chapter 39 of India's GST tariff schedule. Most plastic goods are taxed at 18%, though some packaging items and specific product categories may have different rates. Getting the HSN code wrong leads to mismatched GST returns and ITC claim issues. Stock Register lets you configure the HSN code and GST rate for every finished product. Sales invoices apply the correct GST automatically. Purchase bills for polymer granules, masterbatches, and packaging are entered in the same system with input tax credit tracked automatically. At month-end, GSTR-1 and GSTR-2 reports are ready to download and file.