Additive Integration in Packaging Materials

A PVDC (polyvinylidene chloride) emulsion for pharmaceutical packaging that provides improved barrier properties, thermal stability, and long-term stability compared to conventional PVDC emulsions. The emulsion is made by using a silica sol as the dispersant instead of traditional surfactants. This avoids issues like decomposition, hydrolysis, migrant formation, crystallization, and poor thermal stability when heating. The silica sol also improves the water vapor barrier performance of the coating. The PVDC emulsion formulation contains 35-50% vinylidene chloride monomer, 0.5-5% comonomer, 0.1-0.5% initiator, 0.01-0.1% stabilizer, 5-7% silane coupling agent modified silica sol, and 30-5

Source

Thermoplastic resin film with improved oxygen barrier properties by adding layered minerals to olefin-based resins. The film has a matrix phase made of polyolefin resin and a dispersed phase of flat layered clay minerals. The layered clay minerals peel off to form a maze structure with long axis in film direction. The volume concentration of clay is 1-40%. This configuration provides a labyrinth effect for oxygen barrier without needing lamination or coatings.

Source

Multilayer film with high antiviral performance and recyclability for packaging applications. The film has a sealing layer containing photocatalytic microparticles and a reduction in water contact angle of 3 degrees or more. The sealing layer is predominantly polyethylene or polypropylene resin. The film structure includes an intermediate layer, cyclic olefin resin layer, and sealing layer. The sealing layer prevents migration of antibacterial agents to adjacent layers. The film provides antiviral properties without sacrificing recyclability.

Source

Multilayer film for packaging materials that allows easy removal of adhering contents like food residue while maintaining good heat sealability. The film has a sealing layer with a thermoplastic resin and a surfactant. Embossing the sealing layer surface to increase its specific area enhances content release. The film can be used in containers like paper cups to facilitate cleaning.

Source

Packaging film for bags and pouches that has improved anti-blocking properties to prevent sticking and clogging. The film has one surface with a roughness of 1-10 microns due to blending iron powder into the propylene resin. This roughness reduces friction and prevents sticking compared to smooth surfaces. The iron powder also absorbs oxygen to improve barrier properties. The rough surface can be formed by blending iron powder into the resin at 1-40% mass.

Source

Multilayer substrate for packaging materials with improved gas barrier properties and adhesion between layers. The substrate has a stretched polypropylene layer sandwiched between an outer layer and an inner coating layer. The coating layer contains a resin with polar groups to improve adhesion of subsequent layers like vapor deposited films. This prevents delamination and improves gas barrier performance compared to polypropylene-only substrates. The multilayer substrate can be used in packaging applications and the packaging material is made by laminating the substrate with additional layers like vapor deposited films and sealant layers.

Source

Low opacity, biodegradable, and heat-sealable paper made from cellulose fibers coated with a bio-based wax to reduce opacity and improve barrier properties. The paper has a base sheet of refined softwood cellulose fibers with a basis weight of 10-25 g/m2. It is coated with a transparency agent like a coconut-based wax and a heat-sealable coating like a thermoplastic starch or protein. The coated paper has opacity less than 35% and can be used for packaging without supercalendering.

Source

Coating packaging materials like paper and cardboard with a thixotropic aqueous mixture to improve barrier properties like reducing gas and moisture transfer through the material. The coating composition contains smectite clay, a water-soluble polymer, and a cross-linking agent that links the clay to the polymer. Applying the mixture to a surface and heat treating crosslinks the clay-polymer barrier. This provides coated packaging with improved barrier properties for replacing single-use plastic in produce shipping.

Source

Pulp mold packaging with improved strength, insulation and stackability for fresh product transportation. The packaging has a main body with a cover that attaches inside the main body. This allows for insulation between the main body and cover. The cover has a top and bottom mold with an internal space. The main body has a top mold with an internal space. The cover and main body molds are made of pulp material with a binder, antifoaming agent, and water repellent. Grooves on the molds prevent distortion. A fixed coupling connects the cover bottom to the main body. This prevents jamming when stacked. The internal spaces between the molds can be filled with cellulose foam insulation.

Source

Biaxially stretched polyamide film with improved properties for food packaging and alcohol evaporants. The film has a specific composition and structure to balance properties like bending pinhole resistance, puncture strength, dimensional stability, and ethanol penetration. It contains polyamide 6 as the main component, with dispersed particles of a resin like PBAT, PEE, or POE having a maximum diameter of 1 μm or more. This provides plane alignment and crystallization parameters that enhance performance.

Source

Functional reinforcing paper with insect repellent, antibacterial, deodorizing, moisture proofing, and freshness maintaining properties for improved packaging quality. The paper has a coating with a functional material like insect repellent, antibacterial agent, deodorant, freshness retainer, or desiccant. It can also be used as a packaging material itself with contact surfaces containing the functional material. The coating enhances strength, water resistance, and oil resistance.

Source

Thermally insulated, waterproof, and high-strength packaging bag that provides improved protection for goods while reducing wrinkling and damage. The bag uses a composite structure with outer and inner paper layers sandwiched between insulating foam layers. Elastic adhesive is used to bond the layers. The outer layer has a convex buffer structure that disperses pressure. The insulating foam has a gradient height convex structure to prevent wrinkling. The adhesive is a polyurethane emulsion with thickener, wetting agent, and silane coupling agent for strength and elasticity.

Source

Multilayer film with excellent gas barrier properties, appearance, and recyclability, particularly for wide width films like 500 mm. The film has an outermost layer made of a specific resin composition containing EVOH with 20-50 mol% ethylene content and 90 mol% saponification, and 350-2000 ppm of polyvalent metal ions like Mg, Ca, Zn, Co, Mn. This improves slipperiness between surfaces during extrusion to reduce defects. The film also has inner layers of adhesive and polyolefin resins. The composition allows wide width films with good appearance, gas barrier, and recyclability.

Source

Stretch blow-molded articles like toner bottles that prevent degradation of the contained toner powder and prevent wax transfer to the bottle surface when made from recycled PET. The molded articles contain a polyester, wax, and an inorganic layered double hydroxide or zeolite. The wax is adsorbed by the inorganic compound instead of transferring to the bottle surface, preventing chemical attack on the toner particles inside. This prevents deformation of toner particle surfaces when stored in the bottle. By using recycled PET, it reduces environmental impact compared to virgin PET.

Source

Stretch blow-molded article, like toner bottles, that prevents degradation of accommodated toner and reduces chemical attack on toner particles when filled. The blow-molded article contains a polyester resin, wax, and an inorganic compound like layered double hydroxide or zeolite. The wax adsorbs charged toner particles during recycling. The inorganic compound prevents wax transfer to the bottle surface during blow molding. This prevents deformation of toner particles contacting the inner surface.

Source

Laminate with improved adhesion properties when used with substrates containing antistatic agents. The laminate has three layers: a barrier layer, a resin layer, and a substrate layer. The resin layer contains a specific copolymer with ethylene and a dicarboxylic anhydride monomer. This copolymer provides good adhesion to the barrier layer and substrate layer even when the substrate contains an antistatic agent. The barrier layer has low oxygen permeability. The laminate can be used in packaging applications where the substrate contains antistatic agents.

Source

Sheet for press-through packaging, like for medicine blisters, with improved properties for environmental friendliness and manufacturing ease. The sheet contains vinyl chloride resin, biomass resin, and a plasticizer. It has a specific storage modulus range of 1-2.6 GPa at 30°C. The biomass resin is a butylene succinate like polybutylene succinate. The plasticizer is epoxidized vegetable oil like epoxidized soybean oil. The vinyl chloride resin has low chlorine content. This composition allows manufacturing press-through packages with biomass content over 10% and reduced bleeding of plasticizers during production.

Source

Packaging film with improved anti-blocking properties for preventing sticking and clogging of filled pouches. The film has at least one surface with a roughness in the range of 1.0 to 10 μm. This roughness is achieved by blending iron powder into the propylene-based resin layer forming that surface. The iron powder not only improves anti-blocking but also provides oxygen barrier properties. Blending iron powder into the resin layer forms a rough surface with a small friction coefficient that prevents sticking.

Source

Packaging material with low variance in barrier properties to extend shelf life of packaged products without using excessive coating materials. The packaging material has a base paper with a specific weight range, and coatings with cross-linked hydroxy polymer and wax. The base paper weight is 30-90 g/m2 to balance homogeneity and barrier effect. The first coating forms an oxygen barrier with cross-linked hydroxy polymer, and the second coating forms a water vapor barrier with polymer and wax. This combination reduces variance in barrier properties compared to high-weight base paper or excessive coatings.

Source

Laminate with improved water vapor barrier properties over time, suitable for packaging applications. The laminate has a paper base, an inner resin layer, and an aluminum vapor deposition layer. The inner resin layer contains specific resins like polyolefin, polyvinyl alcohol, acrylic, epoxy, acrylic urethane, polyester-based polyurethane, or polyether-based polyurethane. This composition prevents significant moisture ingress into the paper layer after extended storage. The aluminum layer provides additional barrier. The laminate has a low moisture content after prolonged exposure to humidity.

Source

Resin composition for packaging applications that has improved thermal stability compared to existing compositions containing ethylene-vinyl alcohol copolymer (EVOH) and polypropylene. The composition contains EVOH and a polypropylene resin containing carbon 14. The carbon 14 polypropylene provides better thermal stability compared to conventional polypropylene resins. The composition can be used in molded articles, sheets, films, bottles, tubes, containers, and multilayer structures with improved thermal properties.

Source

Polyester resin composition for films with improved barrier properties and mechanical strength compared to traditional polyethylene terephthalate (PET) resins. The composition contains a furandicarboxylic acid-based polyester resin (A) and a thermoplastic elastomer (B) containing isophthalic acid, tetramethylene glycol, and butadiene units. The thermoplastic elastomer has specific storage modulus and loss tangent properties at low temperatures. The composition provides balance between barrier properties and mechanical strength for films used in packaging applications.

Source

A process for making biodegradable packaging materials from waste jute bags that has enhanced mechanical strength, water absorption, flame and heat resistance, low thermal conductivity, and high reflectance. The process involves delignifying the waste jute, phosphorylating it, washing, drying, and further treatments like homogenization, sonication, freezing, and lyophilization to modify the jute fiber properties. This results in biodegradable packaging materials with improved functionalities like water absorption, flame retardancy, and low thermal conductivity compared to unmodified jute bags.

Source

Biodegradable nanocomposite food packaging films that provide enhanced antimicrobial and oxidation inhibition properties to prevent spoilage and pathogen growth. The films are made by incorporating biosynthesized zirconium nanoparticles capped with a bioactive compound called Arachisan derived from peanut leaves. The ArZrNPs provide antimicrobial activity against food-borne pathogens like Salmonella and E. coli. They also scavenge free radicals to prevent oxidation. The nanoparticles are dispersed in biodegradable polymer films for sustainable packaging with extended shelf-life and reduced pathogen risk.

Source

Laminate sheet for food packaging with improved moldability and processability. The laminate sheet contains a high percentage of inorganic powder, like calcium carbonate, in the inner layer. The powder particle size distribution is critical to avoid variations in moldability during mass production. The particle size range is 0.9-2.9 μm (D10), 2.2-4.2 μm (D20), 3.6-5.6 μm (D30), 5.0-7.0 μm (D40), and 6.4-8.4 μm (D50). The inner layer contains more powder than the outer layers. This composition provides stable moldability and processability of the laminate sheet and resulting food packaging containers, even with high filler content.

Source

Biodegradable film made from bacterial cellulose with enhanced properties for food packaging applications. The film has a bacterial cellulose matrix with protein entrapped inside. The matrix is coated with a crosslinked layer containing an ionic polysaccharide, polyether, and metal cation. This composite film has advantages like high oil and water resistance, biodegradability, and transparency compared to plain bacterial cellulose. The protein-coated cellulose is made by growing a symbiotic bacteria-yeast colony to produce cellulose, then harvesting and coating it with the ionic polysaccharide-polyether-metal mixture.

Source

Eco-friendly and biodegradable packaging materials made from sugarcane bagasse that are sustainable, flame retardant, mechanically robust, thermally stable, and have low environmental impact compared to plastic alternatives. The process involves delignifying the bagasse, phosphorylating it, homogenizing, sonicating, casting, freezing, and freeze-drying to create films, aerogels, boards, boxes, plates, and sheets. The phosphorylation step enhances the properties like solvothermal stability, degradation resistance, and flame retardancy.

Source

Hybrid biocomposite film for food packaging that combines whey protein isolate, chitosan, and silica to improve properties like strength and antibacterial activity. The film consists of a whey protein isolate matrix with added chitosan and silica fillers. The chitosan provides antimicrobial properties while the silica increases strength. The composite films have higher tensile strength and elongation compared to the whey protein isolate film. The chitosan concentration of 1.5% and silica concentration of 5% provide optimal antibacterial properties against E. coli.

Source

Fire-resistant paper packaging for retail products like lithium-ion batteries that suppresses fire and prevents thermal runaway. The paper is coated with a special flame retardant ink containing boron compounds. When heated, the boron reacts with the paper to form a charred glassy structure that makes it fire-resistant and non-flammable. The coating prevents the paper from acting as a combustible fuel and instead becomes a barrier to block, suppress, and shield fire.

Source

A bilayered food packaging film that can detect freshness and spoilage of food items. The film has an inner layer made of electrospun nanofibers loaded with a pH-sensitive bio-colorant extracted from plants. The outer layer is a plasma-treated clay-reinforced LLDPE film. The inner layer changes color in response to vapors released by spoiled food due to the pH-sensing bio-colorant. The transparent outer layer allows visual inspection of the color change. The clay-reinforced LLDPE provides enhanced barrier properties.

Source

High-strength packaging bag with improved heat insulation, water resistance, and compression resistance compared to conventional bags. The bag has a composite structure with outer and inner layers sandwiched between insulating layers. The outer and inner layers provide strength and compressive resistance, while the insulating layers prevent air flow and moisture. Adhesive layers connect the layers. The adhesive is a polyurethane emulsion with tackifiers, impregnating agents, and silane coupling agents for stability and dispersion.

Source

Degradable plastic bottle made from a unique blend of biodegradable polymers that improves the mechanical properties and barrier performance compared to existing degradable bottles. The bottle is blow molded from a resin mixture containing PLA, PBAT, PPC, PGA, and calcium carbonate. The PPC and PGA polymers enhance the crystallinity of the PLA, improving its strength and barrier properties. The degradable bottle can hold pesticides without leaching solvents due to the higher crystallinity PLA.

Source

Hydroxyl-containing polyamide resin composition, laminate, packaging material, and gas barrier material with high gas barrier properties and solvent solubility. The composition contains a hydroxyl-containing polyamide resin, a metalloxane bond compound, and a catalyst. The hydroxyl-containing polyamide resin has specific hydroxyl group and diamine component amounts. The composition forms a coating with excellent adhesion and gas barrier properties. The coating can be used in packaging materials to prevent gases from penetrating. The metalloxane bonds in the coating have both amide and metalloxane functionalities. The hydroxyl groups on the polyamide and metalloxane compound react to form the coating.

Source

Highly resistant packaging laminate with improved content resistance, metal corrosion prevention, and cuttability. The laminate has a structure with layers in order: base, melt-extruded, metal, melt-coextruded, sealant. The melt-coextruded layer has an acid-modified polyethylene on the metal side and low-density polyethylene on the sealant side. This sandwich structure provides resistance to contents without corroding the metal and prevents delamination. The low-density polyethylene in the sealant layer improves cuttability compared to conventional adhesives. The acid-modified polyethylene has a specific maleic anhydride graft ratio and density range.

Source

Smart food packaging film containing modified oat starch, betalain, and cellulose nanofibers that can monitor food spoilage without using synthetic pigments. The film is made by extracting starch from oats, treating it in subcritical water, extracting betalain from beet peels, mixing with cellulose nanofibers, and drying. The modified oat starch has higher solubility and lower crystallinity compared to natural oat starch, allowing better dispersion with betalain. The cellulose nanofibers reduce betalain temperature sensitivity. The film contains betalain instead of synthetic pigments for color without harming food.

Source

Heat-resistant varnish for coating heat-sealable packaging materials like polyethylene films. The varnish composition contains soluble nitrocellulose, wax, silica, and an organic solvent. The wax content is 0.5-3.0% of the varnish solids, and the silica content is 2.0-11.0% of the varnish solids. This composition provides excellent heat resistance, blocking resistance, and transparency when applied to mono-material packaging materials like polyethylene films. It prevents shrinking and distortion during heat sealing while maintaining transparency and resistance to blocking and abrasion.

Source

Packaging material with improved light-blocking, adhesion, and appearance for preventing light degradation of packaged products. The material has a layered structure with a base, white printed layer, light-blocking printed layer, adhesive, and sealant. The white and light-blocking printed layers contain a specific urethane resin with a polyester polyol derived from sebacic, succinic, or dimeric acid. This resin improves adhesion and appearance compared to conventional light-blocking inks.

Source

A self-working sachet for extending the shelf life of packaged food without using vacuum and gas flushing equipment. The sachet contains materials that absorb oxygen and release nitrogen and carbon dioxide gases when exposed to oxygen in the food package. The sachet ingredients include moisture retention agents, oxygen removal agents, metal carbonates, aqueous alkalis, and flowing agents. The sachet is made using a fully automated process. It can be placed inside food packages to naturally modify the atmosphere and prevent spoilage.

Source

Heat sealant for packaging materials used in bags that have overlapping sections like foldable and gusseted bags. The sealant contains a heat sealing material and expandable particles in a mass ratio of 90/10 to 30/70. The expandable particles expand when heated to fill gaps between overlapping sections of the packaging material during sealing, preventing bag leakage. The sealant also has expandable particle characteristics like diameter and expansion temperature ranges to optimize expansion during sealing.

Source

Packaging laminate film for high-speed vertical form fill seal machines that allows faster packaging line speeds and improves bag productivity. The film has a multi-layer structure where the outermost sealant layer doesn't contain fillers. But the inner sealant layers contain 16-40% by weight of fine (1-20 micron) inorganic fillers like calcium carbonate or silica. This improves thermal conductivity and diffusivity in the inner sealant layers, allowing lower sealing temperatures and faster sealing.

Source

Biodegradable, antibacterial, and antioxidant food packaging film made from natural materials like sodium alginate, egg white, and black seed oil. The film is prepared by mixing the polymers and oil in water, forming a hydrogel, and then freeze-thaw cycling to improve uniformity. The film provides extended shelf life and nutrition preservation for perishable produce by preventing spoilage from bacteria and oxidation. The biodegradable packaging can be disposed of without processing.

Source

Gas barrier film for packaging that reduces environmental impact and improves barrier properties compared to traditional films. The film contains chemically recycled polyester with specific intrinsic viscosity and melting point ranges. It also has a thin inorganic coating. The chemically recycled polyester allows using recycled material with lower environmental impact. The viscosity range prevents excessive stretching forces during film production that can cause breaks. The higher melting point improves heat resistance. The thin inorganic coating further improves barrier properties.

Source

Gas-permeable sheet and packaging material with improved breathability, liquid retention, and seal strength. The sheet has synthetic paper with a polyolefin synthetic pulp layer and natural pulp layer, plus regenerated cellulose composite. This enhances breathability vs natural pulp while retaining liquid. The composite can be a regenerated cellulose layer on the natural pulp surface or impregnated. The sheet also has higher heat seal strength. The composite sheet can be used to make bags containing functional materials like fragrances, insect repellents, etc., which can leak from regular breathable paper bags. The composite sheet seals better, prevents leaks, and allows gas exchange.

Source

Enriched edible films for primary food packaging made from waste fruit peels like banana and jackfruit peels, to replace non-biodegradable plastics and foils. The films are made by extracting nutrients like antioxidants, vitamins, and minerals from the fruit peels, then combining them with biopolymers to create edible films that can be used as primary packaging for food. This provides a sustainable and nutritious alternative to plastic wraps, reduces waste, and enhances the nutritional value of packaged foods.

Source

Smart packaging for preventing spoilage of food products like aquaculture items and fruits/vegetables by releasing antioxidant and antimicrobial preservatives inside the package when temperature and pH exceed predefined ranges. The packaging has sensors to monitor pH and temperature inside, and controlled injectors to release preservatives when spoilage conditions are detected. This allows targeted preservative release rather than adding them at production.

Source

Food packaging that changes color when it comes into contact with harmful bacteria, helping consumers easily identify spoilage. The packaging contains an enzyme that reacts with specific harmful bacteria and turns the packaging a certain color. It also has added calcium hydroxide to become hazy when carbon dioxide is released from spoiling food. The packaging material is made from eco-friendly corn-based plastic.

Source

High barrier food packaging material that improves quality by increasing bonding between the paper substrate and barrier film. The paper substrate is surface modified with ECH (epichlorohydrin) before applying the barrier film. The ECH treatment allows the barrier film to better adhere to the paper and prevents issues like creasing and bubbling. The barrier film is formed by crosslinking polyvinyl alcohol and boric acid with an acid catalyst.

Source

Bioplastics made from agricultural waste like mango seeds, filled with chitosan or nanochitosan, for use as sustainable food packaging. The bioplastics have improved properties like reduced water vapor transmission, better mechanical strength, and antimicrobial activity compared to the pure mango seed bioplastic. The chitosan and nanochitosan fillers also reduced water uptake. The recommended bioplastics for food packaging are 20% CS-30% Sor-10% CA and 30% NCS-20% Sor-10% CA.

Source

A food-grade barrier coating for molded pulp products like bowls, trays, and containers that provides water and grease resistance. The coating is made by crosslinking shellac resin applied to the pulp. The crosslinking involves thermal aging in an oven to melt and fuse the shellac chains. This creates a durable, water-repellent coating that penetrates the pulp fibers. The coated pulp products have low cobb (water absorption) and kit (grease penetration) values, making them suitable for food packaging. The crosslinked shellac barrier meets food migration limits at elevated temperatures.

Source

Gas barrier laminate and packaging material with improved water vapor barrier properties for packaging applications like food, beverages, pharmaceuticals, and chemicals. The laminate has a paper substrate, a water-dispersible resin layer with silica particles, and a polyvinyl alcohol resin layer. The silica particles in the middle layer have a silanol group density of 10-70 µmol/m2 and aspect ratio of 10-100. This layer sandwiched between the paper and PVA layers provides enhanced water vapor barrier. The laminate can be used as a standalone packaging material or as an inner layer in multi-layer packaging.

Source