BOPP Jumbo Roll Specifications for Tape Converters

This guide explains how to assemble a converter-ready specification, distinguish confirmed requirements from open questions and prepare information for a project-specific supply review.

For product-format information, see BOPP adhesive jumbo rolls.

1. What Should a Tape Converter Include in a BOPP Jumbo Roll Specification?

Begin with the intended supply format, finished-tape requirements and operating constraints.

A specification should separate what the buyer already knows from what still requires supplier confirmation.

Identify the Material and Intended Conversion

Confirm whether the requirement is for an adhesive-coated BOPP jumbo roll intended for slitting and rewinding.

Uncoated BOPP film, adhesive-coated jumbo rolls and finished carton-sealing tape are different supply formats. Their specification requirements should not be treated as interchangeable.

Identify the intended finished tape, including its target widths, lengths, color and application.

Essential Fields in a Specification Request

Specification Assembly Table

TBC = To Be Confirmed. The status column is a starting placeholder, not a declaration that these fields are always unknown.

Separate Confirmed Requirements from Open Questions

Assign a status to each field before sending the request:

• Confirmed: The buyer has established the requirement.
• To Be Confirmed (TBC): Further clarification or supporting evidence is needed.
• Open to Proposal: The buyer is willing to evaluate technically suitable alternatives.

Not every optional field must be finalized at the first enquiry stage. Clearly identifying unknowns is more useful than entering unsupported assumptions.

2. How to Specify Thickness and Adhesive Construction

A converter should identify which material properties are required for the intended finished tape, while avoiding confusion between different measurement fields.

Record Film Thickness and Total Tape Thickness Separately

A specification stating only “45 μm BOPP tape” may be ambiguous: the figure could describe backing-film thickness or total coated-tape thickness.

Record these as separate fields when relevant.

For example, Jagannath Polymers identifies one supplier-specific BOPP jumbo-roll grade, BT01, with 23 μm backing film and 36 ±1 μm total thickness.

That example illustrates different specification fields. It does not define a universal tape construction or a Yiran Tape supply specification.

For detailed terminology, see Tape Quality and Specifications.

Identify the Adhesive System

Record an already-specified adhesive system or state the application requirements that the proposed construction needs to meet.

For example, water-based acrylic identifies an adhesive category. It does not independently establish peel adhesion, holding power or suitability for a particular carton-sealing application.

Where the adhesive system has not been finalized, indicate that the construction remains open to technical review.

Clarify Coat Weight When Applicable

If adhesive coat weight is relevant, specify whether the requirement concerns dry coat weight or another coating measurement.

Dry coat weight (for example, g/m²) and dry adhesive layer thickness (for example, μm) are different quantities. Converting one to the other requires appropriate density information for the dried adhesive layer and applicable construction assumptions.

Do not treat these values as directly interchangeable.

If coat weight is not required at the initial stage, mark it for clarification rather than creating an unsupported numerical requirement.

3. How to Confirm Master Width, Coated Width and Usable Width

The nominal width of a parent roll does not automatically equal the width available for the intended slitting plan.

State Each Width Separately

A converter may need to distinguish:

• Master width: Nominal parent-roll width.
• Coated width: Width over which adhesive is applied.
• Usable width: Width accepted for the agreed conversion plan after excluding material unsuitable for that intended use.

These terms should be defined consistently in the buyer's request and supplier's response.

Match Usable Width to the Planned Slit Layout

One supplier example illustrates the distinction: Jagannath Polymers lists up to 1316 mm master width with 1296 mm usable width for its BOPP jumbo-roll offering.

This is supplier-specific information, not a universal trim allowance.

Compare the agreed usable width against the desired finished-tape widths, slit-lane arrangement and relevant process constraints.

Illustrated Width / Slitting Example

The following example is hypothetical. It explains width accounting only.

Calculation

• 26 × 48 mm = 1248 mm of finished-lane width.
• 1260 − 1248 = 12 mm remaining within the assumed usable width.
• 1280 − 1260 = 20 mm excluded between master width and usable width.
• 1280 − 1248 = 32 mm total master-to-finished-lane width difference.

Illustrative width accounting — not to scale

MASTER WIDTH
1280 mm
│
├── Excluded width: 20 mm (total)
│
└── USABLE WIDTH: 1260 mm
    │
    ├── 26 finished lanes × 48 mm
    │   = 1248 mm
    │
    └── Residual usable width: 12 mm

The 12 mm residual is not the total master-width deduction. Likewise, the 20 mm excluded width is not necessarily a single physical edge strip.

Actual edge-trim distribution, blade allowances, defects, setup loss and length-related loss require a project-specific converting assessment.

This illustration must not be used to predict guaranteed yield or confirm an available supply configuration.

4. How to Check Roll Length, Core and Converting Machine Fit

Material selection should account for the actual receiving machine, not only the nominal jumbo-roll dimensions.

Confirm Roll Length and Finished-Roll Targets

State the requested parent-roll length and the intended finished-roll widths and lengths.

Review whether the proposed roll configuration is compatible with the converter's handling and operating requirements, including outer diameter, mass, tension and production planning.

A nominal length alone does not establish machine suitability.

Verify Core Inner Diameter and Chuck Compatibility

Identify the core inner diameter and relevant dimensional tolerance.

Where applicable, clarify core construction, wall strength and loading requirements.

A nominal “3-inch core” designation should not replace a machine-specific fit check.

Check Roll OD, Weight and Unwind Constraints

Converter Machine Compatibility Checklist

• Maximum supported unwind width confirmed
• Maximum supported parent-roll outer diameter confirmed
• Maximum permitted roll mass or loading capacity confirmed
• Core inner diameter and chuck/shaft compatibility confirmed
• Roll length assessed against actual roll envelope and operating requirements
• Required winding direction and adhesive-side orientation confirmed
• Intended finished-tape widths and lengths confirmed
• Finished-roll diameter / rewind limits confirmed
• Splice acceptance and marking requirements clarified
• Relevant trial speed and operating conditions identified
• Material loading and handling requirements reviewed

This is a project-specific checklist, not a claim that all converting machines have identical limits.

For the broader operational context, see the Tape Converter Supply Route.

Confirm Winding Direction and Splice Requirements

State any orientation requirements affecting unwinding and conversion.

If splices are permitted, clarify acceptable quantity, location, identification and handling arrangements.

Do not assume that every jumbo roll is splice-free or that a universal splice limit applies.

5. Which Performance Information Should Be Requested?

Technical performance information should be selected according to the intended construction, conversion process and finished-tape application.

Identify the Required Performance Fields

Depending on the project, relevant fields may include peel adhesion, static shear adhesion, breaking strength, elongation at break and unwind force.

These are possible qualification fields, not a requirement that every initial enquiry include a complete testing package.

Record Test Methods and Conditions

When technical values are requested, identify enough information to understand and compare them.

ISO 29862:2024, ISO 29863:2018 and ISO 29864:2018 address peel adhesion, static shear adhesion, and breaking strength/elongation respectively.

These are measurement-method references, not universal acceptance thresholds for BOPP jumbo rolls.

For unwind-force evaluation, confirm the applicable method and conditions rather than assuming that two supplier-reported values were measured identically.

Detailed test terminology belongs in Tape Quality and Specifications.

Distinguish Typical Values from Acceptance Requirements

Clearly identify whether reported values are:

• Nominal or typical reference data.
• Results from a particular sample or lot.
• Agreed acceptance requirements.

A nominal technical data sheet should not automatically be treated as a guarantee that a specific lot or finished-tape application meets the buyer's requirements.

6. How to Prepare a Converter-Ready Jumbo Roll RFQ

A converter-ready RFQ combines material specifications, conversion targets and relevant qualification conditions into one reviewable request.

Combine Material, Dimensions and Conversion Requirements

Use the preceding sections to identify confirmed material requirements and machine constraints.

Avoid including an unsupported dimension or performance threshold simply to fill an empty field.

Identify Missing Fields Before Submission

Mark incomplete fields as To Be Confirmed or Open to Proposal.

For example:

“The finished-tape width is confirmed. The minimum usable jumbo width and winding orientation require review against our machine configuration.”

This gives the supplier a specific clarification task.

Converter Specification Request Template

BOPP JUMBO ROLL SPECIFICATION REQUEST

Project reference:
[Reference]

1. Intended supply format:
[Adhesive-coated BOPP jumbo roll / Other]

2. Intended conversion:
[Slitting / Rewinding / Other]

3. Finished tape:
Target width:
Target length:
Application:
Color / printing requirements:

4. Material construction:
BOPP backing-film thickness:
Total tape thickness:
Adhesive system:
Dry coat weight (if required):

5. Parent-roll dimensions:
Master width:
Required usable width:
Roll length:
Maximum acceptable roll OD:
Maximum acceptable roll mass:

6. Core / winding:
Core inner diameter:
Chuck or shaft constraints:
Winding orientation:
Splice requirements:

7. Conversion equipment:
Machine model (if available):
Unwind width limit:
Unwind diameter / mass limits:
Planned slit widths:
Relevant operating constraints:

8. Qualification:
Required performance properties:
Applicable test methods / conditions:
Acceptance requirements:
Sample or converting-trial requirements:

9. Packing / destination:
Destination market:
Handling or storage constraints:
Packing requirements:

10. Requirement Status:
Confirmed:
To Be Confirmed:
Open to Proposal:

11. Open Questions:
- Please confirm the proposed usable-width basis.
- Please clarify any unresolved core or winding
  compatibility details.
- Please identify information needed before
  supply-format review.

Request:
Please review these requirements and identify
the configuration details that need confirmation
before quotation.

This template is intended to help buyers prepare consistent information. It is not a statement of current product availability or guaranteed specification coverage.

7. What Must Be Confirmed Before Bulk Supply Review?

A nominal technical data sheet, a successful converting trial and evidence of finished-tape suitability answer different questions.

Documentary Specification Review

First, confirm that the offered construction and dimensions correspond to the buyer's stated requirements.

Depending on the project, review available technical data, grade identification, sample information and other agreed records.

Representative Slitting and Rewinding Trial

Where practical qualification is required, assess representative material under the converter's relevant operating conditions.

Pre-Quotation / Qualification Checklist

• Required specification fields are recorded
• Unresolved dimensions and tolerances are identified
• Applicable material and equipment constraints are reviewed
• Relevant technical documentation requirements are established
• Sample or trial requirements are identified
• Trial acceptance criteria are proposed where needed
• Finished-tape application qualification needs are identified
• Remaining commercial and technical questions are documented

Trial acceptance criteria may address edge quality, winding uniformity, relevant defects, splice behavior and the proportion of output meeting the agreed requirements.

These criteria must be determined for the actual project. No universal minimum yield or permissible defect rate is implied.

Finished-Tape Application Qualification

Successful slitting and rewinding does not automatically establish that the finished tape will perform adequately in every carton-sealing application.

Where relevant, the converter or end user should evaluate the finished tape under suitable application, substrate, packaging and handling conditions.

The recommended qualification sequence is:

Documentary specification review → Representative converting trial → Finished-tape application qualification

This is a practical review framework, not a universal mandatory certification process.

For the broader supplier evidence and review process, see Supply Qualification.

8. Common Specification Mistakes to Avoid

Several common forms of ambiguity can be addressed before a sourcing request is submitted.

Confusing Film Gauge with Total Gauge

A thickness value without a measurement basis can refer to different parts of the tape construction.

Better approach: Identify the intended thickness field explicitly.

Assuming Master Width Equals Usable Width

Nominal parent-roll dimensions do not independently establish the material available for the intended finished-tape layout.

Better approach: Confirm the usable-width definition and the proposed slit plan.

Comparing Test Values Without Conditions

Results that appear numerically similar may not be directly comparable if test conditions differ.

Better approach: Record methods, units and relevant conditions.

Treating Reference Specifications as Guaranteed Availability

Published specifications and example configurations do not necessarily confirm that a particular buyer requirement has already been qualified or can be supplied without further review.

Better approach: Request confirmation for the actual project.

The BOPP Jumbo Roll Product Page provides commercial supply-format information separately from this preparation guide.

9. Frequently Asked Questions Before Requesting a Jumbo Roll Quotation

Is 45 μm Film Thickness or Total Tape Thickness?

The figure is ambiguous unless its measurement basis is identified. Ask whether it refers to BOPP backing-film thickness or total coated-tape thickness.

Does a 1280 mm Master Roll Provide 1280 mm of Usable Width?

Not necessarily. Master width, coated width and usable width should be confirmed separately for the proposed construction and conversion plan.

What Core Details Should a Converter Confirm?

Start with core inner diameter and chuck or shaft compatibility. Where relevant, confirm tolerances, wall construction and loading conditions.

Can Two Adhesion Values Be Compared Directly?

Only when the methods, reporting units and relevant conditions are sufficiently aligned for a meaningful comparison.

What Information Is Needed Before a Specification Review?

Prepare the intended supply format, material requirements, finished-tape targets, key dimensions, machine constraints and relevant qualification information. Clearly mark unresolved fields.