Forging for High-Strength Metal Packaging

Method for manufacturing thin-walled aluminum bottle-shaped cans with small diameter and height, that prevents deformation and variation in shape during production. The key features are: 1) curved corner, inclined, and bent portions at the bottom end of the body to disperse vertical loads and prevent deformation. 2) Angle between common tangent and ground contact plane is 50-70 degrees, with included angles difference of 20-40 degrees. 3) Limiting height of lower end where common tangent intersects body surface. 4) Contacting lower end with retaining surface during processing to disperse loads. This allows thinning the can walls without buckling or deformation.

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Packaging container that can be easily crushed to reduce volume without expanding back to its original shape. The container has a deformable side wall with an inner bent portion. An elastic rib extends across the bent portion. When crushed, the rib narrows as the wall deforms. After crushing, the rib widens, preventing the wall from returning to its original shape. This keeps the container compact. The rib deformation transfers stress to prevent the fitting between the container and lid from coming off.

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A method for forming a curled portion at the open end of a metal bottle-shaped can with a cap, that maintains rigidity and strength even when the can wall is thin or the opening diameter is small. The curling process involves expanding the can wall outward and curving it downward, then curling the tip edge inward and abutting it against the curved wall. The angle between the curled portion and can axis is 20-30 degrees, and the tip edge abuts at 90 degrees. This prevents deformation under vertical loads. The curling process is done by expanding outward and pressing inward.

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Sealing a tube of a hot isostatic pressing (HIP) canister without the need for manual crimping or welding. The system uses an induction heater to heat a portion of the tube to a temperature where it plastically deforms when crimped. A crimper then compresses the heated section to weld the inner surfaces together. This eliminates the risk of gas re-entry during sealing and allows remote sealing of radioactive materials. An induction heater replaces the manual heating and crimping steps, and a carriage moves the canister between heating and crimping positions. A door covers the work area for safety.

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Producing a can packaging blank by reverse extrusion, a tool that is used to shape the outside of a can packaging blank, a device for producing a can packaging blank by reverse extrusion, and a method for their production. The device includes a die, a press punch, a die having a die base and a die wall with a die wall height.

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Flat-packaging container that can be assembled into a box shape without sealing the edges first. The container has overlapping parts with trapezoidal side surfaces and a banded periphery. The parts overlap flat in a plane and fold into a box when pressed. A separation mechanism moves apart the center sections while pressing jigs flatten the outer sections. This prevents wrinkles when forming the box. The container can be flat shipped then assembled into a box shape without sealing equipment.

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Packaging containers with crushable sidewalls that easily collapse and maintain the compressed shape. The containers have valley folds that bend inward when crushed. Reinforcing portions above and below the folds prevent deformation and concentrate stress. Outer reinforcing portions extend past the folds when crushed. Inner reinforcing portions prevent central surface collapse. A groove on the outside warps when crushed to maintain shape. An inner shape-retaining part prevents central collapse. Multiple adjacent parallelogram-shaped uneven parts overlap when crushed. A horizontal valley fold efficiently transfers crushing force. A rib between side surfaces overlaps and pushes when crushed. The reinforcing portions and overlaps prevent deformation and maintain compression.

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A manufacturing method for cans with larger volume and height without increasing plate thickness or mold costs. The method involves three-stage drawing and ironing with increasing squeeze ratios. The first stage has 25-30% squeeze, second stage 30-39%, and third stage 40-50%. This progressive thinning suppresses body breakage. The blank diameter is 150-180mm. By controlling squeezing and thickness, the intermediate body can be formed without needing new molds. The thin walls and flanges prevent rupture.

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Aseptic filling bottle design to prevent warping of the bottom during refrigerated or heated storage. The bottle has a neck, shoulder, body, and bottom. The body has a concave ridge extending around the circumference. This ridge creates a weakened section that compresses during internal pressure changes due to temperature changes. This compression prevents bottom warping when the bottle is filled with carbonated beverages. The concave ridge allows the bottom to flex instead of deforming.

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A packaging case manufacturing apparatus and method that allows attaching an upper case and lower case of a packaging without separate steps like stapling or hot rolling. The upper case end is curved using a heated mold groove, then the upper case is pressed onto the lower case using a transfer column. This forms a bonded connection between the cases without additional fasteners or heating. The curved upper case end fits into the lower case groove when pressed, securing the cases together. The transfer column moves downward to press the upper case onto the lower case after curving.

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Portable manual device for making membranes for coffee capsules without using expensive and bulky machines. The device allows users to easily create membranes for sealing coffee capsules using a sheet material. The device has a raised portion with a frustoconical shape that fits onto the annular flange of the capsule body. The raised portion has a cylindrical section extending axially and a peripheral portion that intersects the cylindrical section. The user applies pressure on the device to cut and form the membrane shape around the raised portion. This allows making customized membranes for different capsule brands by hand. The device can be used to create membranes from materials like aluminum sheets.

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Molding apparatus and method for forming necks of metal bottle-shaped cans with uneven features like ridges and turns that prevent the can body from tilting during the molding process. The apparatus has a holding member that attaches to the inner tool and allows the can body to move only radially while holding it firmly. This prevents the can from tilting when molding the neck between the inner and outer tools. The holding member contacts the boundary between the shoulder and neck to secure the can radially. This accurately forms the uneven neck features without tilting the can.

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A forming apparatus and method for accurately processing the neck of a can without changing its orientation. The apparatus has an inner tool that fits loosely onto the can and an outer tool that surrounds it. The inner tool revolves with the can sandwiched between the tools. A movable member on the inner tool holds the can center aligned. When the inner tool reaches the outer tool, the can pushes back inward. This prevents radial displacement while allowing axial displacement. This prevents inclining when forming the neck profile.

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Can packaging with a distinctive outer appearance that doesn't compromise the interior shape. The can has a wall with varying thickness along its length, but only the outer side is relieved. This prevents issues like tapering interiors or hard-to-empty corners. The relief is limited to 95% of the wall height to avoid issues at the shoulder and rolled edge. The can is made by reverse extrusion using a die with projections that create the outer relief when the blank is pressed.

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A method for manufacturing thin-walled bottle cans with reduced thickness and weight while preventing buckling during molding. The method involves forming the can body in stages with shallow angle transitions between sections. The angle between the neck diameter reduction and the can axis is 18-24 degrees, and the inner diameter expansion at the bulge is also shallow. This reduces the load on the thin walls during molding to prevent buckling. The can body is formed by drawing metal plate into a cup, re-squeezing to a cylinder, bottoming, then molding the neck and bulge.

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A bottle-shaped can made of metal that can be resealed by screwing on a cap. The can has a unique nose shape that improves buckling resistance and allows thinning without deformation. The nose has a male screw portion, a bulge below it, and a straight portion. The bulge has a larger diameter than the straight portion. The straight portion has a recessed section with a symmetrical shape. The length of the nose between the shoulder and bulge is 1-7 mm. The outer diameter of the straight portion is 26-40 mm and thickness is 0.28-0.34 mm. The outer diameter of the bulge is smaller than the straight portion and larger than the concave section. The height of the S-shaped bead is 0.7-1.5 mm. This nose shape prevents buckling during capping due to the compressive loads.

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Apparatus and methods for forming container end closures that provide improved sealing. The methods involve using forming anvils with oblique inwardly angled edges to create bends in the container material at the corners. This allows the material to more easily fold over during sealing. The anvils are inserted into the container opening to form the end closure. Another method involves rotating a pressing device to contact the sub-panels at lower regions first, increasing the contact area as the rotation continues. This helps the material fold over during sealing. The container blanks have specific layouts of straight boundary lines and internal lines of weakness between them. This allows the container to be formed with improved sealing properties.

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A manufacturing method and device for creating a convex shoulder on a beverage can that provides a finger rest and branding opportunity. The method involves partially forming the convex shoulder by moving an outer die around the can axis in the main body. This creates the sloped side of the convex section. After extracting the outer die, stress is added to the main body from the inside to complete the convex shape. The device has a transportation mechanism to move the outer die around the can.

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Method for manufacturing thin-walled beverage cans that prevents deformation and damage when filled with contents. The method involves reshaping the bottom of the can body to improve strength and resistance to internal pressure, impact, and stacking forces. The bottom is reformed by reducing the inclination angle of the annular convex portion and forming a concave portion in the inner and outer peripheral regions. This remodeling improves strength against internal pressure and compression forces compared to the original bottom shape. The reforming is done after steps that soften the can body like inner coating and drying.

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Container forming apparatus, method, and instant food packaging using the container that improves mold release and reduces deformation defects. The container has an inclined side section with steps, and the forming process involves pressing the side at extraction. This prevents crushing and distortion when removing the container. The mold has separate sections for bottom and side forming, with the side section pressed upward to release the container. The inclined side shape concentrates extraction force there. The method involves heating, forming, cutting, and pressing the side to release.

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