A Declaration of Conformity Covering Only the Base Polymer
Base polymer declarations certify monomer purity at the reactor gate but omit all converter additives, breakdown products, and finished article migration limits.
Packaging Convertor Quality Agreement
Meaning
Formal bilateral contracts between film extruders or molders and their customers define the quality specifications and testing protocols for supplied packaging materials. Under a packaging convertor quality agreement, both parties agree on acceptable defect levels, sampling plans, and resin specifications. It establishes the limits for variables like melt flow rate, yellowness index, and dimensional tolerances.
Convertors use these agreements to protect themselves against unwarranted rejections of non-critical variations. The document is limited to quality parameters and does not cover commercial terms like pricing.
Contractual Standard
The agreement specifies the test methods used to evaluate the physical properties of the packaging. It defines the sampling frequency and the criteria for accepting or rejecting a batch. By establishing these rules before production begins, the agreement reduces the risk of disputes.
Performance Attribute
Primary properties such as seal strength, barrier performance, and slip additive levels are listed with their target values and tolerances. These values ensure that the packaging will run smoothly on the customer’s filling lines. Deviations from these targets can cause machine jams or reduced shelf life for the packaged food.
The agreement ensures that the convertor holds these values throughout the production run.
Resolution Protocol
When a batch is suspected of being non-compliant, the agreement outlines the procedure for joint investigation and resolution. It defines the timeline for reporting defects and the process for conducting referee testing by an independent laboratory. This protocol prevents sudden line stoppages and ensures that disputes are resolved systematically.
It protects the business relationship between the parties.