<\/li>\n\n\n\n
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Prepared data packs turn receiving from an investigation into a verification checklist.<\/p>\n\n\n\n
Kraft paper procurement teams and quality managers will find a complete implementation framework here, preparing them for the detailed method matrix and attachments guidance that follows.<\/p>\n\n\n\n
Two kraft paper quotes land on your desk. Both claim 125 g\/m\u00b2 basis weight. Both promise to meet your burst strength requirements. Your procurement team awards the contract to the lower-priced supplier, and three weeks later, the first shipment arrives at your receiving dock.<\/p>\n\n\n\n
That’s when QA blocks it.<\/p>\n\n\n\n
The supplier used TAPPI T 403 for burst testing. Your internal specs reference ISO 2758. The values look similar, but the test methods measure differently enough that your quality team can’t approve the material without re-testing. Production waits. Costs climb. What seemed like a straightforward sourcing decision has turned into a three-way dispute between procurement, QA, and the supplier\u2014all because the RFQ never declared which test method would be used.<\/p>\n\n\n\n
This scenario repeats across the kraft paper supply chain with predictable frequency. The solution isn’t more rigorous supplier vetting or tighter contract language. It’s simpler than that: attach method-named quality evidence at RFQ time, and pre-agree on acceptance criteria before the purchase order is signed.<\/p>\n\n\n\n
What the RFQ Data Pack Actually Is<\/h2>\n\n\n\n![\"Infographic](\"https:\/\/www.paperindex.com\/academy\/wp-content\/uploads\/2025\/10\/edd92fca-f3c1-4e42-a4da-f9bbdb6f064f.png\")
<\/figure>\n\n\n\nAn RFQ data pack is the bundle of TAPPI and ISO method declarations plus recent, method-named test results attached to your quote request. Think of it as a passport for the material’s identity. Just as a passport contains verified credentials that customs officials accept without debate, a properly assembled data pack contains the specific test method codes, units, acceptance ranges, and supporting evidence that your QA team needs to approve material on arrival.<\/p>\n\n\n\n
The data pack answers three questions that generic RFQs leave ambiguous: Which exact test method will be used for each property? What are the acceptable ranges and tolerances? What documented proof backs up the claimed values?<\/p>\n\n\n\n
When these answers are declared upfront and attached to the RFQ, the quote you receive becomes comparable, defensible, and ready for approval. Without them, you’re comparing numbers that may have been generated using incompatible measurement standards.<\/p>\n\n\n\n
Why Test Method Names Matter More Than Target Values<\/h2>\n\n\n\n
A target basis weight of 125 g\/m\u00b2 means nothing without knowing whether it was measured according to ISO 536<\/a> or TAPPI T 410<\/a>. While both standards measure grammage by determining a test piece’s mass and area, their sampling protocols and conditioning requirements differ. The same physical sheet of paper can yield slightly different results depending on which standard the lab follows.<\/p>\n\n\n\nBurst strength presents an even starker example. ISO 2758<\/a> specifies the Mullen burst test, while TAPPI T404<\/a> covers the same property\u2014measuring the hydrostatic pressure at rupture using a rubber diaphragm. If your converting equipment was calibrated around ISO 2758 values and your supplier quotes based on TAPPI T 404, the disconnect won’t surface until the material fails on your line.<\/p>\n\n\n\nWhen evaluating burst performance, buyers often rely on the Burst Index to normalize results across different grammages. The Burst Index is calculated by dividing the bursting strength in kPa by the grammage in g\/m\u00b2. This gives a true measure of the material’s structural efficiency, independent of thickness. A 150 g\/m\u00b2 sheet with 450 kPa burst strength has a Burst Index of 3.0, while a 125 g\/m\u00b2 sheet with the same index would need only 375 kPa burst. Declaring both the raw burst value and its corresponding Burst Index in your RFQ helps suppliers understand whether you’re optimizing for absolute strength or weight-normalized performance.<\/p>\n\n\n\n
Moisture content is particularly sensitive to method variation. ISO 287 and TAPPI T 412 both measure moisture percentage, but they specify different sample sizes, oven temperatures, and drying times. A 7% moisture reading from one method might correspond to 7.3% from another. For applications where moisture control is critical\u2014like packaging for moisture-sensitive goods\u2014that 0.3% gap can determine whether the material performs as specified or introduces quality issues downstream.<\/p>\n\n\n\n
The simplest way to eliminate these discrepancies is to name the method in the RFQ and require the supplier to quote based on that exact standard. This removes ambiguity before it becomes a dispute.<\/p>\n\n\n\n
Building the Method Matrix: Your RFQ Blueprint<\/h2>\n\n\n\n![\"Infographic](\"https:\/\/www.paperindex.com\/academy\/wp-content\/uploads\/2025\/10\/The-Kraft-Paper-RFQ-Data-Pack_-Name-TAPPI_ISO-Methods-and-Attach-Evidence-to-De-Risk-Approval-visual-selection-2-1024x970.png\")
<\/figure>\n\n\n\nThe foundation of an effective data pack is a simple matrix that connects each required property to its test method, unit, acceptance range, and required attachment. This matrix functions as the technical blueprint for the material you’re sourcing.<\/p>\n\n\n\n
Here’s how to structure it:<\/p>\n\n\n\n
Property<\/strong>: List each characteristic you need to control\u2014basis weight, moisture, burst strength, tensile strength, and any others relevant to your application.<\/p>\n\n\n\nMethod<\/strong>: Specify the exact TAPPI or ISO standard the supplier must use. Choose one and name it explicitly. If your internal quality system is built around ISO standards, require ISO methods. If you work with North American suppliers who routinely use TAPPI protocols, specify TAPPI codes. The critical point is consistency across all quotes you receive.<\/p>\n\n\n\nUnit<\/strong>: State the measurement unit clearly. Use g\/m\u00b2 for basis weight, percentage for moisture, kPa for burst strength measured via ISO 2758, and so on. Don’t leave units to interpretation.<\/p>\n\n\n\nAcceptance Range or Tolerance<\/strong>: Define what “acceptable” means numerically. Industry practice often uses \u00b15% as a starting baseline for grammage, with tighter bands for mechanical properties like burst and tensile. A 125 g\/m\u00b2 specification with \u00b15% tolerance accepts anything from 118.75 to 131.25 g\/m\u00b2. For burst strength or tensile, the tolerance window typically narrows to \u00b13% or less, depending on your process sensitivity. Declaring these ranges in the RFQ prevents the supplier from quoting material that technically meets a numerical target but falls outside your operational window.<\/p>\n\n\n\nAttachment Required<\/strong>: Specify what documentation must accompany the quote. For most properties, this means a recent lab test report showing the method used, the result, the test date, and the lab’s identifying information. For certificates like FSC, PEFC, or ISO 9001, it means providing the current scope page and registry verification.<\/p>\n\n\n\nA straightforward matrix might look like this:<\/p>\n\n\n\n
<\/figure>\n\n\n\nAn RFQ data pack is the bundle of TAPPI and ISO method declarations plus recent, method-named test results attached to your quote request. Think of it as a passport for the material’s identity. Just as a passport contains verified credentials that customs officials accept without debate, a properly assembled data pack contains the specific test method codes, units, acceptance ranges, and supporting evidence that your QA team needs to approve material on arrival.<\/p>\n\n\n\n
The data pack answers three questions that generic RFQs leave ambiguous: Which exact test method will be used for each property? What are the acceptable ranges and tolerances? What documented proof backs up the claimed values?<\/p>\n\n\n\n
When these answers are declared upfront and attached to the RFQ, the quote you receive becomes comparable, defensible, and ready for approval. Without them, you’re comparing numbers that may have been generated using incompatible measurement standards.<\/p>\n\n\n\n
Why Test Method Names Matter More Than Target Values<\/h2>\n\n\n\n
A target basis weight of 125 g\/m\u00b2 means nothing without knowing whether it was measured according to ISO 536<\/a> or TAPPI T 410<\/a>. While both standards measure grammage by determining a test piece’s mass and area, their sampling protocols and conditioning requirements differ. The same physical sheet of paper can yield slightly different results depending on which standard the lab follows.<\/p>\n\n\n\n Burst strength presents an even starker example. ISO 2758<\/a> specifies the Mullen burst test, while TAPPI T404<\/a> covers the same property\u2014measuring the hydrostatic pressure at rupture using a rubber diaphragm. If your converting equipment was calibrated around ISO 2758 values and your supplier quotes based on TAPPI T 404, the disconnect won’t surface until the material fails on your line.<\/p>\n\n\n\n When evaluating burst performance, buyers often rely on the Burst Index to normalize results across different grammages. The Burst Index is calculated by dividing the bursting strength in kPa by the grammage in g\/m\u00b2. This gives a true measure of the material’s structural efficiency, independent of thickness. A 150 g\/m\u00b2 sheet with 450 kPa burst strength has a Burst Index of 3.0, while a 125 g\/m\u00b2 sheet with the same index would need only 375 kPa burst. Declaring both the raw burst value and its corresponding Burst Index in your RFQ helps suppliers understand whether you’re optimizing for absolute strength or weight-normalized performance.<\/p>\n\n\n\n Moisture content is particularly sensitive to method variation. ISO 287 and TAPPI T 412 both measure moisture percentage, but they specify different sample sizes, oven temperatures, and drying times. A 7% moisture reading from one method might correspond to 7.3% from another. For applications where moisture control is critical\u2014like packaging for moisture-sensitive goods\u2014that 0.3% gap can determine whether the material performs as specified or introduces quality issues downstream.<\/p>\n\n\n\n The simplest way to eliminate these discrepancies is to name the method in the RFQ and require the supplier to quote based on that exact standard. This removes ambiguity before it becomes a dispute.<\/p>\n\n\n\n The foundation of an effective data pack is a simple matrix that connects each required property to its test method, unit, acceptance range, and required attachment. This matrix functions as the technical blueprint for the material you’re sourcing.<\/p>\n\n\n\n Here’s how to structure it:<\/p>\n\n\n\n Property<\/strong>: List each characteristic you need to control\u2014basis weight, moisture, burst strength, tensile strength, and any others relevant to your application.<\/p>\n\n\n\n Method<\/strong>: Specify the exact TAPPI or ISO standard the supplier must use. Choose one and name it explicitly. If your internal quality system is built around ISO standards, require ISO methods. If you work with North American suppliers who routinely use TAPPI protocols, specify TAPPI codes. The critical point is consistency across all quotes you receive.<\/p>\n\n\n\n Unit<\/strong>: State the measurement unit clearly. Use g\/m\u00b2 for basis weight, percentage for moisture, kPa for burst strength measured via ISO 2758, and so on. Don’t leave units to interpretation.<\/p>\n\n\n\n Acceptance Range or Tolerance<\/strong>: Define what “acceptable” means numerically. Industry practice often uses \u00b15% as a starting baseline for grammage, with tighter bands for mechanical properties like burst and tensile. A 125 g\/m\u00b2 specification with \u00b15% tolerance accepts anything from 118.75 to 131.25 g\/m\u00b2. For burst strength or tensile, the tolerance window typically narrows to \u00b13% or less, depending on your process sensitivity. Declaring these ranges in the RFQ prevents the supplier from quoting material that technically meets a numerical target but falls outside your operational window.<\/p>\n\n\n\n Attachment Required<\/strong>: Specify what documentation must accompany the quote. For most properties, this means a recent lab test report showing the method used, the result, the test date, and the lab’s identifying information. For certificates like FSC, PEFC, or ISO 9001, it means providing the current scope page and registry verification.<\/p>\n\n\n\n A straightforward matrix might look like this:<\/p>\n\n\n\nBuilding the Method Matrix: Your RFQ Blueprint<\/h2>\n\n\n\n
<\/figure>\n\n\n\n
![\"Infographic](\"https:\/\/www.paperindex.com\/academy\/wp-content\/uploads\/2025\/10\/The-Kraft-Paper-RFQ-Data-Pack_-Name-TAPPI_ISO-Methods-and-Attach-Evidence-to-De-Risk-Approval-visual-selection-3.png\")
<\/figure>\n\n\n\n![\"Infographic](\"https:\/\/www.paperindex.com\/academy\/wp-content\/uploads\/2025\/10\/The-Kraft-Paper-RFQ-Data-Pack_-Name-TAPPI_ISO-Methods-and-Attach-Evidence-to-De-Risk-Approval-visual-selection-4.png\")
<\/figure>\n\n\n\n![\"Infographic](\"https:\/\/www.paperindex.com\/academy\/wp-content\/uploads\/2025\/10\/The-Kraft-Paper-RFQ-Data-Pack_-Name-TAPPI_ISO-Methods-and-Attach-Evidence-to-De-Risk-Approval-visual-selection-5-1024x523.png\")
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