Ethylene-Methyl Acrylate Copolymer in Packaging

Laminated films for packaging materials that have excellent retort resistance at high temperatures and impact resistance at high temperatures for applications like retort sterilization. The films have a layered structure with a surface layer, an intermediate layer, and a heat-sealable layer. The surface layer contains a copolymer of ethylene and a monomer like ethyl acrylate or methyl acrylate. The intermediate layer contains a copolymer of ethylene and a monomer like ethyl acrylate, methyl acrylate, or maleic anhydride. The copolymers in the layers have specific compositions and Mw/Mn ratios for balanced retort resistance and impact strength. The layered film structure provides both good retort resistance at high temperatures and impact resistance at high temperatures.

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Laminate for packaging applications with improved gas barrier properties after retort treatment. The laminate has an anchor coat layer, a vapor deposition layer, and a barrier coat layer on a polyolefin substrate. The anchor coat layer contains a resin with methyl (meth)acrylate and a polar group-containing (meth)acrylic ester or (meth)acrylic acid, a curing agent, and a silane coupling agent. The polar group is selected from hydroxyl, amide, amino, phosphate, or epoxy. The mixing ratio of methyl (meth)acrylate to polar group-containing (meth)acrylic ester or (meth)acrylic acid is 5-900:100. This anchor coat layer provides good adhesion between the polyolefin substrate and the

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Laminated packaging materials with improved barrier properties and handleability. The laminate structure includes a paper base, barrier layer, and gas barrier layer. The barrier layer contains polyolefin resin and (meth)acrylic resin, with specific composition ratios. The gas barrier layer can have a gas barrier resin. This allows balancing barrier performance with handleability compared to traditional barrier coatings. The (meth)acrylic resin glass transition temperature is -60°C to 10°C. The polyolefin resin content is 6-94% and (meth)acrylic resin is 6-94%.

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Flexible packaging made from nylon (BOPA) and linear low density polyethylene (LLDPE) that can be thermally recycled without degradation. The key innovation is using a specific additive, PE-gMAH, in the LLDPE to make it compatible with the BOPA when melted. This allows recycling the mixed plastic packaging back into new packaging without needing virgin material. The additive is incorporated into the LLDPE during processing before forming the packaging film.

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Composition for preserving plant freshness that can prevent excessive torque during kneading and includes a (meth)acrylic resin, an anti-aging agent, and a porous material. The (meth)acrylic resin has structural units derived from (meth)acrylic acid esters and α-olefins. The composition can be used in products like laminates, labels, and packaging materials to extend the shelf life of fruits and vegetables.

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Heat-sealable multilayer film with improved slipperiness, transparency, strength, and processability for medical packaging applications. The film has layers including a heat-seal layer containing an ethylene-methyl acrylate copolymer and an unsaturated fatty acid amide. This layer is adjacent to a layer containing a polyolefin resin like polyethylene. The film has a layer containing a polyamide resin like nylon. The film has excellent heat sealability, barrier properties, and slipperiness to prevent blocking during processing. The film can be manufactured by coextrusion or sequential lamination.

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A container for sealed packaging like a plastic cup with a lid that addresses the issue of poor sealing and opening properties when using polyester resin containers. The container has a polyester resin layer on the open end face. To improve sealing and opening, an additional coating layer is laminated onto the polyester layer. The coating layer contains a specific composition of ethylene-methyl methacrylate copolymer (EMMA) and polyethylene. The EMMA content is 60% by weight or more. This coating layer is exposed on the container end face.

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Food packaging material replacement for high impact polystyrene (HIPS) and polyvinylidene chloride (PVdC) in food packaging to eliminate migration concerns. The replacement is a formable sheet and packaging structure made with specific combinations of materials like post-consumer recycled PET, polypropylene, ethylene methyl acrylate, ethylene/methyl acrylate/glycidyl methacrylate, and blue-white color concentrate. The materials are co-extruded to replace HIPS/PVdC while maintaining properties like strength, oxygen barrier, trim force, seal/peel, hot fill resistance, and impact resistance. The co-extrusion obviates the need for adhesives and improves oxygen migration resistance, trim quality, and hot fill resistance compared to conventional PET.

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Packaging material for food products that replaces problematic materials like HIPS and PVdC. The packaging comprises a multilayer structure made of specific compositions like PET, post-consumer resin (PCR) PET, polypropylene (PP), ethylene methyl acrylate (EMA), ethylene/methyl acrylate/glycidyl methacrylate terpolymer (EMAGMA), and PEI coating. The layers are arranged in a specific order to provide strength, barrier, and trimming properties. The core layer uses PCR PET with additives like nucleating agents and colorant. The barrier layer uses PCR PET, EMA, EMAGMA, and optionally PP. The sealing layer uses PCR PET and optionally PP. The layers are joined by co-extrusion, melt extrusion, or ad

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Heat-sealable multilayer film for medical packaging with improved slipperiness and workability. The film has a heat seal layer containing an ethylene-methyl acrylate copolymer and an unsaturated fatty acid amide. This layer sandwiches a polyamide layer and a polyolefin layer. The film has excellent transparency, strength, and slipperiness compared to conventional multilayer films. The slipperiness prevents blocking during processing and filling. The film can be used for medical packaging by heat sealing it with a nonwoven fabric lid.

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Multilayer film for heat-sealable packaging applications like food packaging that provides improved seal strength and adhesion to materials like APET trays. The film has a sealant layer with specific properties to enable strong seals. The sealant layer is a copolymer of ethylene and alkyl acrylate with a melt index of 2-30 g/10min, low crystallinity (30% or less), and melt flow of 1.0 g/10min or more. This copolymer composition provides optimal balance of sealing properties. The film also has an upper layer in contact with the sealant layer to adhere to the sealant.

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Polymer blends, films, and articles containing the films that improve cling and toughness of vinylidene chloride-based packaging films like food packaging. The blend contains vinylidene chloride interpolymers, ethylene-acrylate interpolymers, and optional additives like stabilizers, plasticizers, and processing aids. The blend improves cling and toughness compared to vinylidene chloride monolayer films. The films can be used in packaging applications like food packaging. The multilayer films can have an outer layer made from the blend.

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Multilayer packaging film that enables easy, clean opening of containers without tearing or residue outside the seal line. The film has a specific layer structure: an inner seal layer, an adhesion promoting layer, and an outer layer. The adhesion promoting layer is made of a modified olefin polymer mixed with acrylate polymers. It allows peelable cohesive tearing rather than sticking when the seal is broken. The modified olefin polymer provides initial adhesion to the seal layer, while the acrylate polymers promote clean tearing.

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Ethylene copolymers for packaging films with improved properties like creep resistance, toughness, and processability. The copolymers have specific density, modulus, molecular weight distribution, and comonomer distribution. They have densities of 0.918-0.935 g/cm3, G' at 190°C less than 40 Pa, molecular weight distributions Mz/Mw > 2 (>3 normal/flat), comonomer distribution normal/flat, CDBI50 > 65, and a single DSC peak. The copolymers are made using single site catalysts.

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Polyester trays with improved adhesion to lidding films for food packaging. The trays have a bulk layer made of crystalline polyethylene terephthalate (CPET) and a capping layer directly contacting the bulk layer. The capping layer is a copolymer containing ethylene and a second unit selected from acrylate, vinyl acetate, or anhydride/carboxylic acid. This copolymer composition provides better adhesion to CPET compared to traditional lidding materials, enabling stronger seals between the tray and lidstock. The copolymer capping layer can also form a film.

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A cover tape for packaging electronic components that prevents blocking and damage to antistatic properties during storage and transportation of rolls. The cover tape has a low peel strength when heat sealed to prevent blocking between rolls. The low peel strength is achieved by having a sealant layer with a specific composition and thickness, sandwiched between a base layer and an intermediate layer. The sealant layer contains a styrene-methyl acrylate copolymer. The intermediate layer contains a low-density polyethylene. The base layer can have an antistatic coating. The low peel strength prevents blocking between rolls during storage without impairing the antistatic properties of the tape.

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Container for sealed packaging and sealed packages themselves that have improved sealing and opening properties. The container has a polyester resin layer on the open end face. Additionally, a coating layer containing an ethylene-methyl methacrylate copolymer (EMMA) is laminated on the polyester layer. This coating prevents crystallization of the polyester during sealing, improving sealing strength and preventing stick-slip issues when opening the lid. The EMMA coating also enhances the container's resistance to heat and moisture. The sealed packages are made by heat-sealing the container with a lid having a polyolefin adhesive layer.

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A novel resin composition for packaging films that provides excellent moisture resistance and transparency. The composition contains an ethylene-based copolymer with specific properties and a crystal nucleating agent. The ethylene copolymer has a density range of 0.941-0.950 g/cm3, contains 99.00-99.99% of the copolymer by mass, and a storage shear modulus of 10-100 kPa at 180°C. The crystal nucleating agent is added in an amount of 0.01-1.00% by mass. This composition can be used to create packaging films with improved moisture barrier properties without sacrificing transparency.

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Resin composition for food packaging films with excellent anti-fogging properties, transparency, and heat sealing. The composition contains an ethylene- (meth) acrylic acid ester copolymer as the main component, along with specific amounts of antifogging agents like monoglycerin fatty acid ester, ethylene oxide adduct, and polyglycerin fatty acid ester. The composition enables anti-fogging at both high and low temperatures, transparency, and good heat sealing for food packaging films.

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Multilayer packaging film with easy peelable seals for two-piece containers like food packaging. The film has a sealing layer made of heat-sealable olefin polymer, an adhesive layer between the sealing layer and container made of modified olefin polymer with a small amount of (meth)acrylate polymer, and optional layers for barrier, amide adhesion, and carrier. The modified olefin adhesive layer peels easily from the container when opened, without tearing or residue, while the sealing layer provides strong seals. The modified olefin adhesive layer prevents adhesion of the sealing layer to the container during sealing. The (meth)acrylate polymer in the adhesive layer promotes peelability.

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