Oxygen Resistant Biodegradable Packaging

Biodegradable polymer composition for packaging applications that provides a sustainable alternative to petroleum-based plastics. The composition is a blend of biodegradable polymers like polylactic acid (PLA), polyhydroxyalkanoates (PHA), polyvinyl alcohol (PVOH), polybutylene adipate terephthalate (PBAT), and polybutylene succinate (PBS) along with fillers like cellulose fibers and calcium carbonate. The blend is designed to achieve optimal mechanical strength, flexibility, and biodegradability for packaging applications like food, beverage, personal care, agriculture, and industrial packaging. The use of biodegradable polymers significantly reduces environmental footprint compared to petroleum plastics, the composition is made from renewable resources, and the inclusion of fillers and plasticizers makes it economically viable.

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A biodegradable polymer composition for packaging applications, comprising 40-75% aliphatic-aromatic polyester, 0-15% polyhydroxyalkanoate, 0-15% starch or starch derivatives, and 0-15% plasticizer, wherein the plasticizer is a linear or branched polyether-polyol with a specific molecular weight range. The composition exhibits improved processability, mechanical properties, and odor neutrality compared to conventional starch-based bioplastics.

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Biodegradable gas barrier film comprising a substrate layer and a gas barrier layer, where the gas barrier layer contains 40-60% poly(glycolic acid) relative to the total volume of the gas barrier layer. The gas barrier layer has a thickness between 0.38 and 4.89 microns and exhibits excellent gas barrier properties through mutual complementation of the gas barrier layer and the substrate layer. The gas barrier layer can be formulated with various polymers, including poly(butylene adipate-co-terephthalate), to enhance its gas barrier performance.

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A biodegradable laminate and film for forming inorganic vapor deposition films, comprising a base layer, a vapor-deposited film, and a resin layer in this order. The resin layer contains a first aliphatic polyester resin (A) with a specific molecular structure that provides high surface tension and low surface roughness, enabling excellent adhesion to the vapor deposition film. The resin layer is formed from a composition comprising the aliphatic polyester resin (A), optionally a polyhydroxyalkanoate (C), and other resins as needed. The laminate and film exhibit excellent biodegradability, including home compostability and marine biodegradability.

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Multi-layer packaging material for eco-sustainable and high-barrier food packaging, particularly for confectionery products. The packaging has a biodegradable base film made of bio-based polymers like PBS, PHA, or vegetable proteins. It also contains natural fillers like cellulose nanofibers and phyllosilicates. The fillers improve barrier properties and mechanical strength. The packaging has a heat-sealable barrier layer on the inside made of biodegradable polymers like PHBH and PBS. This provides excellent oxygen, water vapor, and aroma barrier while still allowing compostability and biodegradation. The multi-layer structure combines biodegradability, compostability, barrier properties, and mechanical strength for eco-friendly confectionery packaging.

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Multilayer barrier film for packaging applications with high oxygen barrier and transparency. The film has alternating layers of an aliphatic polyester resin and a butenediol vinyl alcohol copolymer (BVOH) or an ethylene vinyl alcohol (EVOH) resin. This combination provides both oxygen barrier and transparency compared to using just polyester layers. The film can be made by alternately extruding and laminating the resins, then biaxially stretching and heat setting the stack.

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Biodegradable multilayer packaging film with improved properties like barrier, transparency, tear strength, and shelf life. The film has an inner layer of biodegradable polyhydroxyalkanoate (PHA) sandwiched between two outer layers of biodegradable aliphatic aromatic polyester (BioAEP). The outer layers contain antifogging agents to prevent moisture buildup. The film structure provides good barrier, transparency, and shelf life stability while also being biodegradable.

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Biodegradable barrier film for packaging applications that has improved oxygen barrier properties and transparency compared to existing biodegradable films. The film is made by alternately laminating layers of an aliphatic polyester like polylactic acid and a polyvinyl alcohol. This structure provides both oxygen barrier and transparency. The layers are melt extruded, alternated, and then biaxially stretched and heat set to form the film.

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A food-grade multilayer film for flexible packaging of semi-liquid products, particularly for pouches and doypacks, that combines barrier properties with mechanical performance. The film comprises a cellulose-based barrier layer on the outer surface and a bio-based Poly(butylene succinate-co-butylene adipate) (PBSA) layer on the inner surface, with both layers integrated into a single, food-grade multilayer structure. The film achieves superior barrier properties, including oxygen transmission and water vapor transmission rates, while maintaining mechanical integrity and biodegradability. This innovative multilayer design enables the creation of flexible packaging that meets the demands of semi-liquid products while maintaining their integrity and shelf life.

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Food spoilage driven by microbes exacerbates our existing problems, besides food insecurity and financial loss. Consequently, one of the significant obstacles to safeguarding food from external pollutants is adequate packaging and preserving its calibre. Food has traditionally been packaged in plastic, which has limited recyclability and harms the environment. The manufacturing of plastic packaging materials depends significantly on fossil fuels. The extraction and processing of these finite resources contribute to environmental degradation. This not only endangers the environment but also presents hazards to human health, as toxins from plastics can infiltrate the food chain. Integrating biodegradable elements into food packaging supports a wider effort to optimize packaging processes for greater efficiency and environmental responsibility. The practicality of biodegradable packaging extends across diverse aspects, covering environmental gains, the conservation of resources, reduction in waste, and consideration of consumer preferences. Biodegradable elements, commonly sourced from ... Read More

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Packaging materials are crucial components in pharmaceutical products, serving multiple functions beyond mere containment. They protect drugs from environmental factors such as light, moisture, and oxygen, thereby preserving their stability and efficacy. Various materials are employed in pharmaceutical packaging, including glass, plastics, metals, and flexible laminates, each with specific properties suited to different drug formulations and dosage forms. Primary packaging, which comes into direct contact with the drug, requires careful selection to ensure compatibility and stability. Secondary and tertiary packaging provide additional protection and facilitate handling and distribution. The choice of packaging material considers factors such as moisture permeability, light transmission, gas barrier properties, and chemical inertness. Child-resistant and tamper-evident features are incorporated to enhance safety and prevent misuse. Environmental concerns have led to increased focus on sustainable packaging solutions, including recyclable and biodegradable materials. Innovative packag... Read More

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Home compostable articles comprising polylactic acid (PLA) are produced by blending PLA with biodegradable aliphatic-aromatic polyesters derived from aliphatic C6-C18 dicarboxylic acids, aromatic dicarboxylic acids, and aliphatic C2-C10 diols. The aliphatic-aromatic polyesters improve the home compostability of PLA, enabling the production of compostable articles that meet industrial composting standards. The blend can be processed using conventional techniques such as extrusion, injection molding, and blow molding to produce a wide range of articles, including packaging materials, tableware, and agricultural products.

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Conventional passive packaging plays a crucial role in food manufacturing by protecting foods from various external influences. Most packaging materials are polymer-based plastics derived from fossil carbon sources, which are favored for their versatility, aesthetic appeal, and cost-effectiveness. However, the extensive use of these materials poses significant environmental challenges due to their fossil-based origins and persistence in the environment. Global plastic consumption for packaging is expected to nearly triple by 2060, exacerbating the ecological crisis. Moreover, globalization has increased access to a diverse range of foods from around the world, heightening the importance of packaging in providing healthier and safer foods with extended shelf life. In response to these challenges, there is a growing shift to eco-friendly active packaging that not only protects but also preserves the authentic qualities of food, surpassing the roles of conventional passive packaging. This article provides a comprehensive review on the viability, benefits, and challenges of implementing ... Read More

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Biodegradable packaging material with improved oxygen and fat/oil barrier properties. The packaging material uses a biodegradable polymer composite layer made of specific layers: a central barrier layer of vinyl alcohol polymer, adhesion promoter layers made of predominantly vinyl alcohol polymer on both sides, a sealable layer, and an outer substrate layer. This composite structure provides both oxygen barrier and fat/oil resistance while being biodegradable. The vinyl alcohol polymer in the barrier layer reduces oxygen permeability, and the adhesion promoter layers enhance adhesion.

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Biodegradable polymeric compositions for packaging consumer goods like food, clothing, and household items that are predominantly home compostable. The compositions contain a blend of polyhydroxyalkanoates (PHAs) and other biodegradable polymers like polyesters and cellulose esters. The PHAs provide biodegradability, while the other polymers enhance properties like strength and barrier. A nucleating agent is added to improve processing. The blended compositions can be used in home composting systems to biodegrade along with food waste.

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Oxygen barrier material comprising a biodegradable support layer and a biodegradable second coating layer, where the support layer is made from cellulose-containing natural fibers and the second coating layer is made from polybutylene succinate. The biodegradable layers are extruded onto the support layer, forming a barrier laminate with excellent oxygen barrier properties.

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A biodegradable oxygen barrier material comprising a support layer with a first coating layer and a second coating layer applied by extrusion coating. The first coating layer contains a biodegradable binding agent, preferably polyvinyl alcohol, and the second coating layer is a biodegradable polymeric material. The material exhibits improved oxygen barrier properties and can be used in packaging applications.

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Barrier layer for packaging that provides better oxygen and water barrier properties compared to traditional metal foil barriers. The barrier layer has a base layer made of polyolefin or degradable polymer, and an additional layer on top made of polyvinyl alcohol with metal oxides or non-metal oxides. This improves gas barrier performance while maintaining water barrier capability. The base layer can have a separate section with a different polymer to further enhance water barrier. The oxide layers can be stacked with the base layer instead of forming metal oxides on the base layer. This avoids the cost and process issues of forming metal oxides directly on the base layer.

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Biodegradable film with high barrier properties and low noise level, comprising a blend of polylactic acid (PLA) and polyhydroxyalkanoate (PHA) resins, wherein the PHA resin contains 3-hydroxyhexanoate (3-HH) repeating units and is present in an amount of 10-30 wt% based on the total weight of the PLA and PHA resins. The film is produced by melt-extruding the resin blend, stretching the resulting sheet, and heat-setting the stretched film.

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Biodegradable multilayer film for environmentally friendly packaging that is biodegradable in soil and sea, has excellent barrier properties to oxygen and moisture, and can be easily produced. The film has a biodegradable resin layer made of polyhydroxyalkanoate (PHA) polymers, sandwiched between a substrate layer and a barrier layer. The PHA resin has a heat-sealing strength of 0.5-15 kgf/15 mm. The film has low water vapor and oxygen transmission rates, enabling long-term barrier protection. The barrier layer uses an ethylene vinyl alcohol (EVOH) resin instead of non-biodegradable materials like aluminum or nylon. The film structure allows biodegradability in natural environments without harming the environment, while maintaining barrier properties and lifespan for packaging.

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