Impact Modification Technologies for Durability

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

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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.

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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.

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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.

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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.

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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.

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Eco-friendly laminated film for packaging applications that maintains barrier properties and bonding strength after heat sterilization. The film has layers: an outermost stretched PP film, a barrier coating of modified PVA, an adhesive layer, an inner stretched PP film, and a heat seal layer of unstretched PP with lower melting point than the outermost layer. The barrier coating contains modified PVA crosslinked with organosilane compounds. The inner PP film has a lower melting point than the outermost film. This configuration allows the film to retain gas barrier and adhesion after heat sterilization.

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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.

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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.

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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.

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Flexible packaging film that provides robustness for bag-in-box and spouted pouches while allowing recyclability. The film has three layers: a biaxially oriented polyamide cap layer, a core layer, and a blown polyethylene seal layer with a compatibilizer. This combination provides strength for packaging rigors while having recyclable components. The polyamide cap and polyethylene seal can be recycled separately.

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A semiconductor packaging technique that improves reliability of power semiconductor packages, particularly for next generation devices like SiC, GaN, and Ga2O3. The technique involves modifying the solder interface between the semiconductor element and substrate to prevent delamination and cracking. The modification involves using a specific solder alloy composition, thin film stack sequence, and solder geometry to reduce diffusion of elements like Ni and Au into the interface. This prevents peeling and degradation of the bond strength between the semiconductor and substrate during repeated heating and cooling cycles. The modified solder interface provides improved reliability for power semiconductor packages operating at higher temperatures and currents.

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Heat shrinkable polyester film for labels on PET bottles with high shrinkage rate, puncture strength, and resistance to bag rupture when dropped, and excellent adhesion. The film contains 60 mol % or more of ethylene terephthalate, 5 mol % or more of diethylene glycol, and 0 mol % or more of non-crystalline monomer components. This composition provides optimal shrinkage, puncture strength, and drop resistance for PET bottle labels.

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Embossed paper packaging material for twist packaging that does not require wax coatings. The packaging material has a base layer made of paper or cellulose that is embossed in sections to allow twisting without cracking. The embossing provides elasticity and flexibility for twist packaging without using wax coatings that can make recycling difficult.

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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.

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A recyclable pouch that can be suspended and reinforced near the hole to prevent tearing. The pouch is made of fibrous material like paper or cardboard. A strip of fibrous reinforcement is added between the front and rear walls of the pouch near the hole. This concealed reinforcement increases strength near the hole where it is susceptible to tearing. The reinforcement can be joined to the walls using heat activated adhesive for added durability.

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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.

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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.

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A composite support element for packaging heavy products like white goods that provides durability during transportation and stacking. The support element has a base made from cellulosic materials like urea formaldehyde, melamine formaldehyde, or melamine urea formaldehyde glues. This base is covered by layers of paper. An additional layer of metal can be added between the base and paper layers or outside them to further reinforce the support element.

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Heat sealable film made from propylene derived from bionaphtha that has reduced environmental impact compared to petroleum-based films. The film contains at least 10% bionaphtha-derived propylene units relative to the film mass and 300-1000 ppm of phosphorus-based antioxidant. This composition reduces change in color, transparency, and mechanical properties compared to films with lower bionaphtha content. The film can be used for packaging materials and laminated structures.

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