Injection Molding for High-Precision Package Formation

Packaging Cannabis in pre-measured doses without requiring users to portion themselves. The method involves compressing the Cannabis mixture into rounded capsule molds and sealing it inside. This allows consistent dosage without estimation or weighing. The rounded mold shape ensures the pucks fit into smoking devices. The compression and sealing are done in one step to avoid handling and reduce manufacturing costs compared to separate molds and packaging.

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Composite materials made from a continuous matrix of thermoplastic polymer with dispersed wood particles for applications like packaging. The wood particles are non-fibrillated like chips with sizes >1mm. The thermoplastic polymer forms a continuous matrix around the wood particles. The composite has melt processability and properties like gas, liquid, and oil barrier. The wood particles provide stiffness and barrier properties while the polymer matrix holds it together. The composite can be injection molded into containers like bottles and tubes.

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Sealing the ends of packaging tubes like cosmetics tubes in a way that prevents moisture absorption and degradation of the inner layers, particularly when using environmentally friendly paper for the tube bodies. The sealing method involves closing molds around the tube ends, melting the tube material, and then cutting off excess. The molds have flanges that force molten material to flow upwards and cover the exposed paper layer, sealing it in. This prevents moisture absorption when the tube is stored or used in humid environments. The paper layer inside the tube is protected from degradation, avoiding issues like discoloration or spoilage.

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A method for low-germ packaging of vegan cheese that involves filling a rectangular foil bag with hot liquid cheese, sealing it, and then cooling the cheese inside the sealed bag to solidify. This prevents germ contamination by maintaining the cheese in a liquid state while filling and then quickly cooling it before bacteria can grow. The rectangular shape allows easy further processing without wrinkles or wrapping issues.

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Reducing injection molding cycle time for contact lens packaging to increase production throughput. The packaging design has walls with oblique draft surfaces and a vertical wipe surface. This allows side gate injection molding where the polymer is injected from the side instead of the top. The oblique draft surfaces aid in demolding without deformation, and the vertical wipe surface prevents sticking when the part separates. Side gate injection reduces cooling time compared to top gate injection since the material enters closer to the thickest sections.

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A machine that converts flexible packaging plastic waste into paving blocks in a single step. The machine melts the plastic waste and presses it into block molds without the need for separate extrusion and compression steps. It uses a threaded rod actuator with a rotary lever and bottom bearing to move the melting and molding components. The machine allows efficient conversion of flexible packaging waste into useful paving blocks in a compact and integrated machine.

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Redesigning bottle caps using advanced injection molding techniques to improve product protection and longevity. The invention involves using injection molding to create bottle caps with specific features that enhance product preservation. These features may include things like integrated seals, barriers, or barriers with permeable sections to allow gas exchange while preventing contaminants. The molding process allows for complex geometries and materials that can provide better protection against light, moisture, and contaminants compared to traditional caps. The goal is to create caps that provide better product preservation and longevity compared to standard bottle caps.

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Resin sheet, molded article, and package with improved impact resistance and thermoformability while maintaining water vapor barrier properties. The resin sheet has a base layer made of a composition containing PP or cyclic olefin resin, inorganic filler, hydrogenated petroleum resin, and thermoplastic elastomer. This base layer provides water vapor barrier and improves impact resistance and thermoformability compared to traditional base layers. The sheet can be used to make packages by filling, sealing, and heat treating the sheet with contents. The base layer composition allows better impact resistance and thermoformability in the final package compared to traditional water vapor barrier layers.

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Laminated film for packaging applications with improved moldability and impact resistance. The laminated film has a functional layer containing a propylene and ethylene copolymer with low ethylene melt flow rate (3 g/10 min or less) and high ethylene content (10-40%). This functional layer is sandwiched between outer layers containing propylene polymers. The outer layers can also have low ethylene melt flow rates and ethylene contents. The laminated film structure provides improved moldability and impact resistance compared to typical laminated films made with high ethylene content copolymers.

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A packaging box for shaving heads made of polypropylene that can be stretch molded without tearing. The box has modified angles between the walls and upper body to accommodate the lower elongation of polypropylene compared to PVC. This allows the PP packaging box to be formed without tearing during the stretch molding process.

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A laminated sheet for food packaging with improved moldability, mechanical properties, and appearance. The laminated sheet has an inner layer containing calcium carbonate filler and thermoplastic resin, and two outer layers of thermoplastic resin. The inner layer calcium carbonate filler has calcium carbonate particles with surface treatment containing sulfonic acid or phosphoric acid ester. The calcium carbonate content in the inner layer is 40-80% by mass. The outer layer thickness is 2% or less of the total sheet thickness. This laminate reduces variations in moldability, mechanical properties, and appearance compared to conventional calcium carbonate filler laminates. The surface treatment on the calcium carbonate particles improves dispersibility, reactivity, and reduces void formation during processing.

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Molding tool for efficiently and easily demolding opening devices from molded packaging material. The tool has three movable molding portions that close together to form the opening device shape. The middle portion slides forward to fill with molten material. This prevents material entrapment and facilitates demolding by avoiding material bridging between the portions. The tool can be used in packaging machines to mold opening devices onto packaging materials like multilayer food packaging.

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Unified soap manufacturing process and packaging method that improves productivity by eliminating waste and simplifying steps compared to traditional methods. The method involves injecting a hot soap composition into a mold made of paper with a coated inner surface, sealing it, and cooling until solidified. The coated mold prevents leakage and allows smooth soap separation. It eliminates the need for extrusion, washing, and vinyl wrapping. The coated mold has features like locking wings that fold outward and overlap to securely seal the soap inside.

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A forming apparatus for placing opening devices on packaging material like multilayer food packaging to create easier opening features. The forming apparatus has a mold cavity to shape the opening device and an injection device to fill the mold cavity with molten polymer. The mold cavity is selectively connected to the injection device using a valve element. This allows precise molding of complex opening devices with enlarged openings. The forming apparatus is compact and suitable for smaller packaging formats.

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Manufacturing method for a pouch container with a mouth part that prevents deterioration, requires less force to empty, and prevents mouth part detachment compared to conventional pouch containers. The method involves integrally forming the mouth part onto the pouch container during the molding process. This is done by insert molding, where the mouth part insert is placed in the mold cavity before closing and injecting the resin. The molding process bonds the mouth part and container surface together, eliminating gaps and weak points that can allow light/oxygen ingress, force requirements, and mouth part detachment.

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Biocomposite packaging material made from high density polyethylene (HDPE), red seaweed powder, and coconut coir powder. The composite is manufactured by mixing the three components in a rheomixer at specific temperatures, speeds, and times. The resulting biocomposite has properties like tensile strength, modulus of elasticity, and melting temperature that exceed those of pure HDPE. The seaweed and coconut coir additives improve the composite's mechanical and thermal performance. The process involves melt mixing HDPE, seaweed powder, and coconut coir powder in a rheomixer at temperatures around 135-145°C for 5-10 minutes. The resulting biocomposite blocks are then injection molded into packaging products.

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Co-injection method for creating different plastic layers in packaging production that allows obtaining multiple layers made of different materials on the same package. It involves injecting two different plastic materials simultaneously into the mold cavity instead of sequentially. This is done by opening a secondary raw material channel into the mold and positioning a flow control needle. The primary material flows first, contacts mold surfaces, and slows down due to temperature differences. Then both materials co-injection creates the multi-layer package. The key is simultaneous injection of both materials instead of sequential layers to reduce cycle time compared to sequential injection.

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A molding apparatus for forming opening devices on packaging material that allows efficient molding of complex shapes and small package sizes without compromising quality. The apparatus has a movable mold unit that attaches to the packaging material web and contains multiple mold cavities. Each cavity has a separate injection device with an outlet to fill the mold cavity. This allows simultaneous molding of multiple opening devices on the web without needing large bulky molding machines. The movable mold unit can attach to smaller repeat units of the web. It also enables molding complex shapes and extended dimensions compared to fixed molding stations.

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Resin composition for vapor deposited films used in packaging and insulation applications that suppresses neck-in and die build-up during melt processing and provides improved gas barrier properties. The composition contains EVOH copolymer with specific amounts of 2,4-hexadienal and 2,4,6-octatrienal aldehydes in a specific ratio. The composition also has controlled levels of other additives like antioxidants and plasticizers. The composition allows melting and molding EVOH without defects like neck-in and die build-up while maintaining gas barrier properties.

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Injection molding apparatus for producing hollow articles like bottle preforms using flake-melted PET that avoids hydraulic shocks and molten plastic degradation during injection. The apparatus has 3 injectors instead of the usual 1. The first 2 injectors alternate to mold the part, while the 3rd injector receives molten plastic from the supply when the 1st and 2nd are blocked. This prevents shocks in the supply line and degradation from prolonged high-temp residence.

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