A perspective on additives for flexible packaging

IF 3.8 4区工程技术 Q2 CHEMISTRY, APPLIED Journal of Vinyl & Additive Technology Pub Date : 2024-07-04 DOI:10.1002/vnl.22135

Barry A. Morris

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引用次数: 0

Abstract

Additives have been critical to the growth of flexible packaging since its inception nearly 100 years ago. Additives help tailor the performance of new materials to meet packaging needs and to efficiently run on film converting and packaging equipment. Examples include antioxidants for thermo-oxidative stability during extrusion, slip and antiblock agents to improve film handling and frictional properties, polymer process aides (PPAs) to delay the onset of flow instabilities and increase output, pigments for coloring films and creating light barrier, antifog agents to improve wetting of film surfaces, antistat agents to reduce static charge, and nucleating agents for increasing the rate of crystallization and controlling crystalline morphology. This paper provides a brief history of the development and use of additives in flexible packaging, focusing on polyolefins. It then looks forward at new challenges and opportunities for additive development. One area is regulatory driven, most recently replacing per-and polyfluoroalkyl substances (PFAS)-containing PPAs with non-PFAS technology. The industry has had to respond very rapidly to changing regulations and introduce new technology. The challenge is understanding the impact of the new technology on performance. A second area is sustainability where additives will be critical for upgrading the performance of mechanically recycled post-consumer packaging waste, redesigning flexible packaging structures so that they can be recycled in the PE-stream, and using bio-based or compostable polymers. New research methods such as high throughput experimentation, artificial intelligence and computer modeling and simulation will likely accelerate additive development in the future.

Highlights

Additives are critical for meeting flexible packaging performance needs.
Additives improve surface and bulk properties and processability.
Replacing PFAS-containing process aides is a current area of focus.
Sustainability is driving new opportunities for additive development.
New research tools will help accelerate additive development.

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软包装添加剂透视

自软包装诞生近 100 年以来，添加剂一直是软包装发展的关键。添加剂有助于调整新材料的性能，以满足包装需求，并在薄膜加工和包装设备上高效运行。例如，抗氧化剂可提高挤出过程中的热氧化稳定性，滑爽剂和抗阻塞剂可改善薄膜的操作性和摩擦性能，聚合物加工助剂 (PPA) 可延缓流动不稳定性的发生并提高产量，颜料可为薄膜着色并产生光阻隔，防雾剂可改善薄膜表面的润湿性，抗静电剂可减少静电荷，成核剂可提高结晶速度并控制结晶形态。本文简要介绍了软包装中添加剂的开发和使用历史，重点是聚烯烃。然后展望了添加剂开发的新挑战和新机遇。其中一个方面是法规驱动，最近的一项是用非 PFAS 技术取代含有全氟和多氟烷基物质 (PFAS) 的 PPA。该行业必须对不断变化的法规做出快速反应，并引进新技术。所面临的挑战是了解新技术对性能的影响。第二个领域是可持续性，添加剂对于提升机械回收的消费后包装废弃物的性能、重新设计软包装结构使其可以在聚乙烯流中回收以及使用生物基或可堆肥聚合物至关重要。高通量实验、人工智能和计算机建模与仿真等新的研究方法将在未来加速添加剂的开发。添加剂可改善表面和体积特性以及加工性能。替代含有 PFAS 的加工助剂是当前的重点领域。可持续发展为添加剂开发带来新机遇。新的研究工具将有助于加快添加剂的开发。

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来源期刊

Journal of Vinyl & Additive Technology 工程技术-材料科学：纺织

CiteScore

5.40

自引率

14.80%

发文量

审稿时长

>12 weeks

期刊介绍： Journal of Vinyl and Additive Technology is a peer-reviewed technical publication for new work in the fields of polymer modifiers and additives, vinyl polymers and selected review papers. Over half of all papers in JVAT are based on technology of additives and modifiers for all classes of polymers: thermoset polymers and both condensation and addition thermoplastics. Papers on vinyl technology include PVC additives.