Calculate Polyurethane Color Paste HG-06 Cost per Pair

Calculate Polyurethane Color Paste HG-06 Cost per Pair

Definition of PU sole color paste cost

Polyurethane Color Paste HG-06 is a color paste considered by PU sole manufacturers when calculating the coloring cost assigned to each finished pair of soles. The purchase price per kilogram or per container is only one part of that calculation. A buyer can regret approving an RFQ based only on paste price if the quotation does not show the actual dosage, pigment loading basis, color-change scrap, and production yield. For a production manager, the useful number is not simply the unit price of paste. It is the colorant cost absorbed by each acceptable pair leaving the batch. This distinction matters when comparing suppliers, shade alternatives, or trial formulations. A lower quoted price can still create a higher per-pair cost if more paste is required to reach the approved shade, if color changes consume more material, or if the batch produces fewer acceptable pairs than expected.

Types of color paste comparisons buyers should request

Color paste comparisons should be separated by the way the material will be used, not just by the product name on a quotation. A buyer may be comparing a standard production shade, an adjusted shade for a specific sole design, a sample batch for color approval, or a paste used alongside finishing materials. These are different purchasing situations because each can have a different dosage assumption, approval process, and scrap exposure. When reviewing HG-06, ask the supplier to identify the exact shade basis, the recommended mixing basis, and whether the quote refers to a production supply or a trial quantity. Do not assume that two pastes with similar names will provide the same color result at the same addition level. The product code alone does not confirm shade depth, compatibility, pigment content, viscosity, or use level. Those details should be confirmed through current technical documents and production testing before a purchasing decision is made.

Comparison type	What the buyer should request	Best-fit situation	Limit of the comparison
Production color paste	Quote unit, approved shade reference, dosage basis, and batch quantity	Recurring PU sole production	Does not predict actual factory scrap without production records
Adjusted color paste	Shade target, intended resin system, and approval sample process	New sole design or customer-specific color	Adjustment needs cannot be assumed from a standard quotation
Trial supply	Sample quantity, evaluation method, and commercial quotation for follow-up supply	Initial color approval	Trial results should not be treated as full-batch cost data
Finishing color system	Relationship between paste, coating, and finishing process	Painted or coated sole programs	Paste cost and coating cost should be calculated separately

Features buyers should verify before using a cost formula

The most useful features for a cost review are measurable purchasing and process inputs, not unsupported assumptions about product performance. Buyers should verify the pigment loading basis used for the calculation, the planned dosage rate in the PU formulation, the unit in which paste is priced, the target color standard, and the method used to record rejected or purged material during color changes. The conclusion is straightforward: use a cost model only after its inputs are named and owned by the relevant team. Purchasing should confirm the quote and pack basis. Production should confirm actual material addition. Quality should confirm the approved color standard. Finance or operations should decide whether color-change losses are charged to the current batch, the next batch, or a separate setup account. This approach fits factories that want a defensible per-pair figure. It does not apply when there is no stable formulation, no approved sample, or no reliable batch output record. In that case, the result is an estimate rather than a purchasing benchmark.

• Dosage rate: Confirm whether the planned addition is stated against total PU material input, a component, or another internal production basis.
• Pigment loading: Confirm the supplier’s stated basis before comparing two pastes at different quoted prices.
• Color-change scrap: Record purge material, mixed leftovers, rejected parts, and any cleaning-related loss according to the factory’s accounting method.
• Batch yield: Use accepted pairs, not planned pairs, when calculating the final cost allocation.
• Price unit: Confirm whether the quotation is per kilogram, container, shipment, or another commercial unit.

PU sole applications that affect coloring cost

PU sole coloring cost is affected by where the paste is used in the product and process. For molded PU soles, the main cost question is usually the amount of paste allocated to the material needed for accepted pairs. For programs that also include a coating or decorative finish, buyers should avoid combining all color-related materials into one untraceable number. Separate the molded colorant cost from the cost of shoe sole paint so that formulation decisions remain clear. The same principle applies when a mold-release process is involved. A release agent should be evaluated as its own process material rather than folded into the paste price. This separation fits factories that need to identify why a sole program is over budget. It does not mean that the materials are operationally unrelated; it means each material needs a separate cost driver and a separate approval record.

A per-pair cost model that accounts for dosage rate pigment loading color-change scrap and batch yield

A reliable per-pair model should separate confirmed costs, estimated costs, and unknown costs before any quotation comparison is approved. The conclusion is that the buyer should calculate color paste cost from material consumed per accepted pair, rather than dividing a purchase invoice by the number of pairs planned. The reasoning is simple: planned output does not account for color-change loss or yield loss, and quoted paste price does not account for pigment loading. This model fits a factory with an identified formulation, an approved shade, and batch production records. It does not apply as a final commercial result when the formula is still being adjusted, when the shade has not been approved, or when scrap has not yet been measured.

Use the following structure. Let G represent PU material input allocated to one planned pair. Let R represent the target pigment requirement as a share of that PU input. Let L represent the confirmed pigment loading basis of the selected paste. The calculated paste dosage per planned pair is D = G × R ÷ L. Let P represent the quoted paste price per unit. Let S represent the color-change scrap fraction assigned to the batch, and let Y represent the accepted-pair yield fraction. The paste cost allocated to one accepted pair can then be expressed as Cost per accepted pair = D × P ÷ ((1 − S) × Y). This is a planning formula, not a supplier performance statement. The buyer must insert factory-owned values supported by current records.

Cost input	Cost status	How to treat it in the model	What can make it unreliable
Quoted paste price	Confirmed after supplier quotation review	Use the commercial price unit shown on the quote	Different pack basis, freight terms, currency treatment, or quote validity
PU input per planned pair	Confirmed or estimated by production	Use the actual material allocation method used by the factory	Changing sole size mix or changing formulation
Dosage rate	Estimated until validated in production	Calculate from the required pigment amount and confirmed loading basis	Unapproved shade or inconsistent mixing practice
Pigment loading	Unknown until supplier documentation is confirmed	Do not compare price per unit without this input	Assuming two pastes have equal loading
Color-change scrap	Estimated from internal process records	Allocate according to the factory’s agreed accounting rule	Ignoring purge, leftover mix, or rejected color parts
Batch yield	Confirmed after accepted output is counted	Divide cost by accepted pairs rather than planned pairs	Using target output instead of actual accepted output

Worked calculation procedure for buyers

1. Collect the current paste quotation and identify the price unit, currency, pack basis, and commercial conditions.
2. Confirm the PU material input allocated to a planned pair from the current production formula.
3. Set the target pigment requirement from the approved color standard or controlled trial record.
4. Request confirmation of the paste pigment loading basis before calculating dosage.
5. Calculate paste dosage per planned pair using the factory’s formula basis.
6. Record color-change losses separately from normal production losses.
7. Count accepted pairs after quality release and calculate batch yield from that accepted output.
8. Apply the cost formula and label the result as confirmed, estimated, or pending verification.

Price factors that should not be hidden in a paste quotation comparison

Paste price should be reviewed as a total cost question. A lower material quote may be attractive, but it cannot be treated as the lower per-pair option until dosage, pigment loading, scrap, and yield are aligned. The practical recommendation is to compare suppliers on a shared cost sheet where every assumption is visible. This fits procurement teams comparing alternatives for the same approved sole program. It does not fit comparisons between different colors, different sole structures, or different production routes unless the cost sheet separates those variables. Buyers should also avoid treating a short sample evaluation as a full production price result. Sample work can support color approval, but it may not include the color-change losses, normal production rhythm, or accepted-pair yield that determine the final cost in routine manufacturing.

• Confirmed commercial costs: quoted material price, agreed pack basis, and any separately stated commercial charges.
• Estimated operating costs: expected dosage, color-change scrap allocation, labor used for cleaning, and expected yield.
• Unknown costs requiring clarification: pigment loading basis, exact shade approval conditions, production compatibility, storage conditions, and final batch acceptance rate.
• Costs that should remain separate: release agent, PU raw materials, paint, curing materials, labor, energy, molds, and packaging.

User guide for controlling color paste cost during production

Use a controlled process from receiving through batch closeout. The first action is to match the purchase order, quotation, internal material code, and approved color standard before the paste is released to production. The next action is to document the actual added quantity for the batch rather than relying only on the planned formula. During color changes, record purge material, leftovers, cleaning losses, and rejected parts using a consistent internal category. At batch closeout, record accepted pairs and calculate yield before assigning paste cost per pair. This method fits production managers who need a repeatable monthly or order-level review. It does not replace technical validation of a new color system. If the formula, mold condition, process temperature, or approved shade changes, begin a new cost record instead of carrying over assumptions from an earlier batch.

A common mistake is to divide all paste purchased in a period by all pairs shipped in that period. That method may hide unused inventory, samples, color-change waste, and differences between sole programs. Another mistake is to treat pigment loading as equal across quoted options without written confirmation. A third is to charge all color-change scrap to a single customer order without an agreed internal rule. The better approach is to maintain a batch sheet that shows material issued, paste added, scrap recorded, accepted pairs, and remaining inventory. For paint-related work, keep the record separate from curing agent consumption because curing materials and color paste serve different cost functions.

FAQ of PU sole color paste cost calculation

Should buyers choose the lowest paste price?

No. The lowest quoted price should only be considered a starting point. The decision should be based on the cost per accepted pair after the actual dosage rate, pigment loading basis, color-change scrap, and batch yield are included. This recommendation fits comparisons where two or more suppliers are being reviewed for the same approved color and the same PU sole formula. It does not apply when each supplier is quoting a different shade target or a different commercial package, because those conditions must first be made comparable. The correct purchasing document is a shared cost sheet that identifies what is confirmed, what is estimated, and what has not been verified. This prevents an estimate from being presented internally as a confirmed factory cost.

Can a trial batch provide the final per-pair figure?

A trial batch can provide an early estimate, but it should not automatically be treated as the final production figure. Trial conditions may involve a different color-change pattern, lower output, manual adjustments, or a different accepted-pair yield than regular production. Use trial data to identify questions for the next evaluation, such as whether the dosage basis needs revision or whether color-change loss needs a separate allowance. The method is useful when a buyer needs to prepare an initial budget before full production. Its limit is clear: a final cost should use current production records and accepted output. If no accepted-output data exists, label the figure as a preliminary estimate and avoid using it as a fixed supplier comparison result.

Sholee Chemicals as a color paste supplier for PU sole programs

Sholee Chemicals supplies release agents, chemical additives, color paste, and paint curing agent products for industrial applications including PU soles. The company also accepts customized industrial release agent, painting, and chemical additive product requirements. For buyers evaluating color-related costs, the practical approach is to submit the intended PU sole application, color requirement, current dosage basis, expected batch setup, and the information needed for a commercial quotation. The company brief states that there is no MOQ, which may help buyers who need to discuss trial and production requirements before defining a repeat order structure. The brief also lists 30 days; buyers should confirm how that period applies to their specific product, order conditions, and delivery arrangement before placing an order. If you are looking for a color paste supplier for PU sole production, contact Sholee Chemicals for the latest product quotation.