Heat Transfer for Durable Package Graphics
47 patents in this list
Updated:
Package graphics face demanding thermal conditions during manufacturing and use. Heat-sealing operations commonly expose materials to temperatures between 120-180°C, while distribution environments can subject packaging to thermal cycling from -20°C to 50°C. These conditions create significant challenges for maintaining graphic integrity, especially on modern flexible films and biodegradable substrates.
The fundamental challenge lies in achieving durable image transfer and retention while preserving the structural and barrier properties of the underlying packaging material.
This page brings together solutions from recent research—including selective light absorption techniques for dual-layer identifiers, heat-activated template transfers for structural coloring, and specialized thermal transfer processes for biodegradable substrates. These and other approaches focus on practical implementation in high-speed packaging operations while ensuring graphic durability throughout the product lifecycle.
1. Method for Producing Dual-Layer Machine-Readable Identifier on Opaque Packaging Films via Selective Light Absorption and Heat Transfer
ADAPA DIGITAL GESMBH, 2024
Method to produce a machine-readable identifier on packaging films that can be easily and quickly produced, easily detect manipulation, and work on opaque films. The identifier is created by selectively absorbing a focused light beam into the first layer of the film, causing a color change and local heating. This heat transfers to the second layer, forming a visible image there. The first layer identifier can be optically read, then the second layer image is read and compared to verify the packaging.
2. Layered Crafting Mat Assembly with Permeable Top Layer and Reflective Interior Layer
CRICUT INC, 2024
Crafting mat assembly, method, and packaging for heat-sealed crafting projects like heat transfer vinyl (HTV) decals. The mat has a layered interior and permeable top layer. It's used on a support with a substrate, design, and heating element. Heat from the element passes through the layers except the reflective one, which reflects back to evaporate moisture. The packaging has a cavity sized for the mat thickness to prevent warping during shipping.
3. Method and Tool for Heat-Sealing Labels onto Biodegradable Packaging with Rotating Mandrels
MACHINES PAGES, 2024
A method and tool for labeling biodegradable packaging with rough surfaces like paper pulp. The method involves transferring a heat-sealable label onto the conical or frustoconical periphery of a molded biodegradable package without adhesive. The label is placed upside down on a rotating mandrel, brought into contact with the package, and rotated to transfer the label. The label is then indexed and punctually secured to the package. Heat sealing is done by contacting the labeled package with a hot mandrel. The tool has rotating label and packaging mandrels, label indexing/securing, and hot mandrel sealing.
4. Single-Material Film Packaging Bag with Heat-Molded Spout Base and Integrated Flow Channel
FUJIMORI KOGYO CO LTD, FUJIMORI KOGYO CO, 2023
A packaging bag with a spout that can be easily opened and recycled using a single-material film, like polyethylene. The spout has a base attached to the bag and a tube with a flow channel. The base is heated and molded onto the bag using a process where only the base surface is heated to the polyethylene melting point. This allows sealing the spout to the bag without melting the polyethylene film. The molded base shape is transferred to the bag during sealing. This provides a sealed spout that can be easily opened by hand due to the molded base shape. It also allows recycling the entire bag using a single-material film.
5. Conveyor-Integrated Non-Round Bottle Heating Apparatus with Rotating Chain and Differential Heat Application
Quan Bao Industrial Co., Ltd., CHUM POWER MACHINERY CORP, 2023
A non-round bottle heating device for unevenly heating non-circular containers like oval, triangular, or quadrilateral bottles. The device is installed on a conveyor with a rotating chain that surrounds the bottle body. Heat aids on the chain contact the bottle at different positions to provide uneven heating around the non-round shape. This allows the container to be heated in a specific pattern for subsequent shaping processes.
6. Thermoformable Packaging Film with Adhesive-Coated Substrate and Wax-Coated Low Anchorage Carrier for Anticounterfeit Image Transfer
RASIK PRODUCT PRIVATE LTD, ACG PHARMAPACK PRIVATE LTD, 2023
A packaging film with an anticounterfeit image that is suitable for pharmaceutical, nutraceutical, or food packaging. The film has a thermoformable substrate coated with an adhesive layer to receive a transfer image. It also has a low anchorage carrier film with wax coatings that allows easy transfer of the image to the substrate. The wax coatings resist high temperatures and have characteristics for embossing and image release. The film provides a robust and tamper-proof packaging option.
7. Method for Producing Structurally Colored Polypropylene Film via Heat-Activated Template Transfer
HAINAN SHINER INDUSTRIAL CO LTD HAIKOU, Hainan Sino-Industrial Co., Ltd., 2023
A method for producing structurally colored polypropylene packaging film without solvents or inks. The method involves heating the molded surface of a polypropylene heat-sealing film using a heated roller. A template with desired color information is then pressed onto the heated surface using hot rollers, transferring the image to the film. This allows creating structurally colored packaging film without ink or printing. The heating prevents whitening and fogging. The film has good sealing properties and shrinkage.
8. Wrapping Apparatus with Repeated Heat Transfer Mechanism for Controlled Blade Temperature Adjustment
PRESSIO KK, PRESSIO CO LTD, Plesio Co., Ltd., 2022
A wrapping apparatus for preventing poor welding and cutting of packaging materials like film. The apparatus has a heating blade, a heat transfer member, and a receiving member. During initialization, the blade is heated and brought close to the receiving member. The heat transfer member is moved repeatedly between a heat absorption position contacting the blade and a heat transfer position contacting the receiving member. This repeated thermal process brings the blade to the melting temperature of the packaging material before welding and cutting. By preheating the receiving member and gradually transferring heat to it, it prevents thermal shock and ensures proper welding and cutting when the film is wrapped around the object.
9. Wrapping Apparatus with Movable Heat Transfer Member for Gradual Heating of Blade
PRESSIO CO LTD, Plesio Co., Ltd., 2022
Wrapping apparatus for packaging objects like newspapers using film that prevents poor welding and cutting of the packaging material. The apparatus has a heating blade, a receiving member, and a movable heat transfer member. During initialization, the blade is heated and the heat transfer member is moved between contact with the blade and contact with the receiving member multiple times to transfer heat. This raises the blade temperature gradually to prevent cooling issues when welding and cutting the film.
10. Unit Dose Medication Packaging Machine with Automated Data Transfer and Customizable Packaging Capabilities
MURAT KÖMÜRCÜ, MURAT KOEMUERCUE, 2022
A unit dose medication packaging machine for hospitals, nursing homes, and clinics that automates the process of repackaging drugs into individual doses while preserving important information from the original packaging. The machine allows customizable packaging sizes, multiple drugs in one package, and waste-free material usage. It uses features like QR code scanning, barcode reading, tension control, and thermal printing to accurately transfer critical data from the main package to the unit dose package during repackaging.
11. Foil Stamping Process with Stereoscopic Intaglio and Matched Relief Plate for 3D Effects on Packaging Boxes
ZHEJIANG SHUNFU PRINTING CO LTD, 2022
A foil stamping process for creating 3D effects on packaging boxes. The process involves two steps: 1) printing proofing to create a stereoscopic foil stamping intaglio and a matched bottom film relief printing plate, and 2) foil stamping pretreatment where the intaglio is mounted on a stamping head, the relief plate is positioned on the box, they're preheated, dusted, and then pressed together to stamp the 3D pattern onto the box. This allows creating 3D effects on boxes using foil stamping with a stereoscopic intaglio and matching relief plate.
12. Stamping Foil with Releasable Layer and Vinyl Resin Protective Coating for Recyclable Paper Packaging
JANG MI AE, Jang Mi-ae, JP&C, 2022
Stamping foil for eco-friendly paper packaging that can be recycled by separating the transfer film and paper. The stamping foil allows printing on paper without using plastic films, which can be difficult to separate and recycle. The foil uses a heat transfer process to stamp designs onto paper without adhesive. The foil can print UV inks on the stamped paper surface. It has a releasable layer that enables easy separation from the paper for recycling. The foil also has a protective layer mixed with vinyl resin to prevent moisture damage and improve abrasion resistance. The foil composition and thickness are optimized for stamping and ink adhesion.
13. Method for Printing Variable and Static Information on Medical Packages Using Thermal Transfer and Hot Stamping with Negative Image Alignment
FRESENIUS KABI DEUTSCHLAND GMBH, 2021
Efficiently printing variable and static information on medical packages using a thermal transfer printer followed by hot stamping. The method involves applying a negative print image using the thermal transfer printer on the package surface. This negative image acts as a template for the hot stamp printer's flat section to print the positive image. The thermal transfer printer's negative image is used as a guide for the hot stamp printer's flat section to ensure accurate alignment. This allows combining variable and static printing in a common region. The thermal transfer printing also prepares the surface for hot stamping by heating it above 130°C to prevent ink adhesion. The package can contain medical liquids and is made of plastic with a matrix phase-polymer system.
14. Apparatus and Method for Thermoplastic Pouch Manufacturing with Selective Web Heating for Design Alignment
IMA SPA, IMA INDUSTRIA MACCHINE AUTOMATICHE SPA, 2021
Method and apparatus for manufacturing flexible pouches from thermoplastic sheets to improve alignment of printed designs without discarding pouches. The method involves superimposing two webs, checking alignment using markers, then heating one web to elongate it and realign the webs. An intermediate heating station between the web supply and bonding station allows selectively applying heat to one web to align it with the other. This avoids wasting entire pouches when adjusting misaligned webs.
15. Method and Apparatus for Transferring Micro LED Chips from Carrier to Target Substrate
MPI LLC, 2020
The present invention relates to a method and apparatus for manufacturing a light-emitting device, and more particularly, to a method for transferring a micro LED chip from a carrier substrate to a target substrate and an apparatus for the same. Displays have been widely used in various electronic products, such as televisions, computers, and handheld terminals, and with the development of technology, the displays are required to have higher resolution, larger screen, and thinner size. Accordingly, the micro light-emitting diode (micro LED) display, which is self-emissive and has high resolution, high contrast, and fast response, is attracting attention as a next generation display. The micro LED display is a display using a micro LED chip having a size of 100 micrometers or less as a light source. In a case of transferring the micro LED chip to a display
16. System for Medical Packaging Production with Digitally Controlled Thermal Print Head and Cliché-Based Overlay Printing
FRESENIUS KABI DEUTSCHLAND GMBH, 2020
A system and method for producing medical packaging that allows efficient and accurate printing of both static and variable information on the packaging. The method involves using a first printer with a digitally controlled thermal print head to apply a negative print image on the packaging surface. This negative image serves as a template for a subsequent offline printing step using a cliché with a flat section. In this step, a color film is pressed onto the negative image to fill in the spaces. This provides a positive print image overlaid on the negative one. The first printer can also be used to heat the surface to create a stencil for the flat section of the cliché. This allows printing the flat section without ink. The resulting packaging has both static and variable information printed accurately and efficiently.
17. Multilayer Transfer Film with Transparent Microstructure and Reflective Layers for High-Resolution Pattern Application on Packaging Cartons
Zhuang Xinlie, CHUANG HSING LIEH, 2020
Multilayer microstructure transfer film for packaging cartons that allows high-resolution microstructure patterns to be transferred onto paper-based packaging without issues like VOC residue and crease bursting. The film has multiple layers including a transparent microstructure layer and a reflective layer. The microstructure layer has a top surface covered by the reflective layer. This allows the microstructure patterns to be transferred onto paper cartons using the film without issues like residual VOCs or crease bursting.
18. Manufacturing Process for Packaging Material with Laser Molded Partial Aluminum Transfer
ZHEJIANG MINONG CENTURY GROUP CO LTD, 2020
Process for manufacturing a packaging material with partial aluminum washing transfer instead of large area gold stamping, which involves laser molding, aluminizing, compounding, and printing steps. The process avoids the issues of high investment and tight adhesion requirements of large area gold stamping. In laser molding, a laser pattern is transferred to the aluminum coating surface using hot molding to form grooves. Aluminizing involves filling these grooves with a micron-level aluminum layer. Compounding attaches the aluminized film to a paper using a fixed-length adjustment device. Printing is then done on the compounded material.
19. Voxel-Level Thermal Behavior Modification in Additive Manufacturing Using Selective Deposition of Fusing, Detailing, and Binding Agents
HEWLETT-PACKARD DEVELOPMENT COMPANY LP, HEWLETT PACKARD DEVELOPMENT CO, 2020
Using agents like fusing, detailing, and binding agents in additive manufacturing processes like 3D printing to selectively modify the thermal behavior of material when exposed to energy. The agents are deposited at the pixel level to enable voxel-level control over energy deposition. This allows precise manipulation of material properties during the printing process. The agents cause effects like fusing, preventing fusing, or binding when exposed to energy, which allows customized material behavior in specific areas of the printed object.
20. Apparatus and Method for Waste-Free Alignment of Printed Thermoplastic Webs in Flexible Food Container Production
IMA SPA, IMA INDUSTRIA MACCHINE AUTOMATICHE S.P.A, 2020
Method and apparatus for manufacturing flexible food containers like doypacks without waste by aligning the printed designs on the outer faces. The method involves superimposing two thermoplastic webs, heating one web to expand it, and then bonding the aligned webs together. This prevents misaligned designs that would require wasteful reworking. The apparatus has a heating station between the roll magazines and bonding station to apply heat to one web and align the webs before bonding.
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