Laminated Shrink Film and Chub Film Tender Checklist: Structure, Shrinkage, Roll Data and Compliance Questions
Learn what buyers should confirm for laminated shrink film and chub film tenders, including LLDPE/Nylon/LDPE structures, shrinkage ratio, roll data, printing and food contact compliance questions.
Published: 2026-07-01
What is laminated shrink film or chub film?
Laminated shrink film and chub film packaging usually refer to roll film used for cylindrical, tube-like or shrink-fitted food packaging formats. They may be considered for some dairy products, meat products, sausage, cream cheese, processed food and other applications where the package needs to form around the product and respond to a shrink process.
Chub film is not the same as ordinary heat shrink wrap. The tender evaluation should focus on material structure, shrink behavior, printing, roll data, sealing, residual solvent, food contact compliance documents and actual packing line testing. Different products may require different film structures and validation.
Common structure direction: LLDPE / Nylon / LDPE based laminate
Some tender documents may specify LLDPE / Nylon / LDPE based laminated printed film. This can be one possible structure direction for LLDPE nylon LDPE shrink film, but it should be treated as a tender example rather than a universal rule.
Outer PE or LLDPE may support print surface, shrink behavior and handling. Nylon may support puncture resistance, mechanical strength and barrier support. Inner PE, LDPE or LLDPE normally functions as the sealing side and food contact side. Adhesive and ink should be reviewed as part of the lamination and printing system.
Why shrinkage ratio matters
Shrink film shrinkage ratio describes how film dimensions change after heat exposure. MD means machine direction, aligned with the film running direction. TD means transverse direction, across the film width.
MD TD shrinkage affects package fit, printed artwork distortion, sealing area, cylindrical appearance and production stability. Buyers should provide target temperature, shrink method, product diameter and packaging line condition. The supplier and buyer should confirm test method and acceptable tolerance before production.
Printing and artwork risks on shrink film
Printed shrink film for food may change visually after shrinkage. Artwork, logo position, text, barcode, nutrition table and legal information can shift or distort.
Dieline, barcode and mandatory information should be reviewed with shrink distortion in mind before final printing. Multi-SKU tenders should confirm repeat length, color count and final artwork version for each design.
Roll data buyers should confirm
Roll data is not only shipping information. It directly affects whether the film can run on the customer packaging line.
Buyers should confirm film width, repeat length, core ID, core width, max roll diameter, max roll weight, roll length, winding direction, splice requirement, print repeat tolerance, roll packing method and carton or pallet requirement.
Technical properties often requested in tenders
Tender documents often request thickness, yield, WVTR, OTR, outside COF, inside COF, shrinkage MD / TD, residual solvent, print registration, odor, seal strength and puncture resistance.
No fixed values should be assumed from a structure name. For every property, the target should be confirmed by tender specification or testing method.
Food contact and compliance documents to clarify
Food shrink film roll projects may involve PE, Nylon, adhesive, ink and printing systems. Buyers should clarify which food contact compliance packaging film documents are required before quotation.
Depending on destination market and product, documents may include Declaration of Compliance, food contact material documents, migration test report, residual solvent report, ink or adhesive food contact statement, COA by batch or third-party testing. Some customers may refer to FDA 21 CFR, EU 10/2011, Japan or Australia as regulatory directions, but requirements should be confirmed project by project.
Common mistakes in chub film tender evaluation
Common mistakes include only comparing price per kg, ignoring shrinkage tolerance, not confirming MD / TD direction, not testing with real filling and packing line, using final artwork before shrink distortion review, ignoring residual solvent and odor requirement, not confirming food contact documents, not confirming roll diameter and roll weight, and assuming all LLDPE/Nylon/LDPE films behave the same.
What to prepare before asking for quotation
Before requesting quotation, buyers should prepare product type, filling weight or product diameter, film width, material structure, thickness, shrinkage requirement by temperature, roll core ID, max roll diameter and weight, annual or monthly volume, number of print designs, printing colors, artwork files, packing machine or shrink process, food contact compliance requirements, residual solvent requirement, sample testing requirement and destination country.
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Panduan Kemasan Terkait
Pertanyaan Umum
What is chub film packaging?
Chub film packaging usually refers to roll film used for cylindrical or tube-like food packaging formats. The exact film structure, shrinkage behavior and sealing performance should be confirmed according to the product and packing process.
Is LLDPE / Nylon / LDPE a common structure for chub film?
It can be one possible structure direction in some tender specifications, but it is not the sole option. Final structure depends on product type, shrink process, filling condition, sealing requirement and compliance documents.
Why is MD / TD shrinkage important?
MD and TD shrinkage affect package fit, printed artwork distortion, sealing area and production stability. Buyers should confirm the test temperature, method and acceptable tolerance before production.
Can printed shrink film keep artwork unchanged after shrinking?
Printed artwork may change after shrinkage. Dieline, barcode, text and legal information should be reviewed with shrink distortion in mind before final printing.
What roll data should buyers provide for chub film quotation?
Buyers should provide film width, repeat length, core ID, roll diameter, roll weight, winding direction, quantity, printing colors and packing line information.
What compliance documents may be needed for food chub film?
Depending on the market and product, buyers may require food contact declarations, migration testing, residual solvent reports, ink and adhesive statements, or batch COA. These should be confirmed before quotation.
Can a supplier guarantee final shrink performance without testing?
No. Shrink performance should be validated with the actual film structure, product, packing equipment, shrink process and storage conditions.