Shrink Sleeves for Full Container Coverage

Shrinking device and method for shrinking packaging onto products that improves energy efficiency by selectively using fluid shrink agent and radiation sources in separate areas of the device. The device has conveyor belts to transport wrapped products. In one area, products are exposed to fluid shrink agent. In another area, products are exposed to radiation sources like IR emitters, lasers, or microwaves. This allows targeted heating of the packaging without overheating the products. The separate areas can have adjustable heights to match product sizes. The radiation sources can be adjusted to focus on film flaps and bottoms. This allows using lower base temperatures with radiation to shrink the packaging. The device can also have features like AI control and adjustable radiation intensity to further optimize shrinkage.

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Heat shrinkable film, label, and packaging material with improved properties for heat shrinking containers. The film has a copolyester resin with controlled crystallinity. The crystallinity is adjusted to have a specific difference in reversible heat capacity before and after the glass transition temperature. This provides better balance between thermal properties like shrinkage and chemical resistance compared to conventional polyester films. The film can be made by preparing the copolyester, casting it into a film, and then heating and stretching it to set the crystallinity.

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Beverage bottles with shrink wrap labels that can have 3D embossed designs without requiring special orientation during shrinking. The bottles have a container with embossed areas, like a face, on the sidewall. The shrink wrap label covers the entire sidewall except the embossed areas. The embossed areas protrude from the label when the bottle is shrunk. This allows 3D embossed designs without needing to align the label during shrinking. The embossed areas can have corresponding relief on the label to match. This eliminates the need for specialized molds for each embossed design.

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Packaging device that applies a hot melt adhesive to one end of a heat-shrinkable film to prevent slipping and improve accuracy when forming a cylindrical label around containers. The device pulls the heat-shrinkable film from a roll, winds it around a core, guides the ends to overlap, applies adhesive to one end, cuts the tube, and heats it to shrink onto containers. This allows longer heat-shrinkable films to be used, reducing connection frequency, and increasing productivity compared to joining multiple short cylindrical tubes.

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Heat-shrinkable polyester film for labeling and packaging applications that can be finished with a small load. The film has specific shrinkage properties when heated in water and air, as well as crystallization behavior, to achieve tight shrinkage without distorting containers or peeling labels. The film has at least one layer with 50 mol% ethylene terephthalate in the polyester. When stretched, it crystallizes to provide high shrinkage force after 30 seconds, but avoids container deformation. The longitudinal shrinkage rate in hot water is 40-80%. Orthogonal shrinkage is -5 to 15%. The refractive index is 1.600 or more.

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Heat-shrinkable polyester film for labeling containers like beverage bottles. The film shrinks more in the longitudinal direction than the width direction, making it suitable for wrapping around cylindrical containers. It has high shrinkage at high temperatures and maintains good low temperature shrinkage over time. The film contains ethylene terephthalate with diethylene glycol as the polyhydric alcohol component. This copolymer composition allows the film to shrink more in the main direction without wrinkling or distortion. The film has high shrinkage force, low haze, and good low temperature shrinkage retention after aging.

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Heat shrinkable polyester film for packaging applications that provides high shrinkage and good mechanical properties after shrinking. The film has specific properties in the longitudinal and width directions to achieve full label coverage and prevent wrinkling. The film is formed by longitudinal orientation followed by transverse orientation. This involves drawing the film in the longitudinal direction at high temperatures, then cooling and stretching in the transverse direction. The film is also heat treated to relax the longitudinal orientation. This process results in high shrinkage in both directions, avoiding shortening or wrinkling after shrinking. The film has a longitudinal shrinkage rate of 10-15% and width shrinkage rate of 100%. It also has high strength, elongation, and clarity.

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Heat-shrinkable polyester film that can be wound around containers like bottles without needing to cut and join multiple pieces. The film has high shrinkage in the longitudinal direction for wrapping containers, low shrinkage in the width direction to prevent peeling, and low shrinkage stress to prevent deformation or container distortion. The film is made using a specific stretching process to balance shrinkage and stress. It contains a low amount of amorphous monomer units compared to normal heat shrinkable PET. The stretching involves biaxial stretching with a higher lateral stretch ratio in the width direction followed by a lower stretch ratio in the longitudinal direction.

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Packaging method and material for containers like food containers that allows easy identification of printed information without labels. The container lid and body joint is sealed using a heat-shrinkable film and a wider heat-sensitive film. The wider heat-sensitive film covers the lid and container periphery. This prevents distortion of printed info when heated. The wider film area provides a visible display for container contents or advertising. After sealing, heat shrinking the film seals the joint. The wider heat-sensitive film remains visible for easy identification.

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Beverage bottles with shrink wrap labels that maintain visual quality when shrunk over embossed areas on the bottle. The bottles have a container with embossments on the sidewall. The shrink wrap label has relief images corresponding to the embossments. This ensures proper alignment and appearance when the label shrinks onto the bottle. It avoids the need to orient the bottle during shrinking to match embossments and label images.

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Heat-shrinkable polyester film that shrinks mainly in the longitudinal direction, like for labeling bottles or banding containers, instead of the width direction. The film has high shrinkage rate in the longitudinal direction, low shrinkage rate in the width direction, and low shrinkage stress. This allows easy winding and attaching the film to containers without shifting or deformation issues. The film is made by biaxial stretching using specific ratios in the width and length directions to avoid excessive crystallization. The film contains a polyester derived from ethylene terephthalate and diethylene glycol. It can use recycled PET without amorphous components. The film has high tension strength in the width direction, low thickness variation, and low shrinkage stress in the longitudinal direction.

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Heat-shrinkable polyester film used for packaging containers that can be recycled together with the containers. The film has specific properties to enable recycling while maintaining adhesion and appearance. The film is made from a heat-shrinkable polyester with a high ethylene terephthalate content (90 mol%) and a narrow melting point range (200-280°C). The film has a high heat shrinkage rate in the main shrink direction (50-75%) but low shrinkage in the transverse direction. This allows it to be coated around containers and heat shrunk without blocking or wrinkling. The film can be bonded to itself in the shrunk state to form a sealed annular body around the container. The adhesive used to bond the ends of the film is an organic solvent containing a polymer. This allows high

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Heat-shrinkable polyester film for packaging applications that has high shrinkage in both width and length directions without stretching in the length. The film shrinks significantly in width when heated, but doesn't stretch in length. This allows full label coverage on containers without shortening the label length. The film has a high shrinkage rate of 60-90% in width and -5 to 12% in length after heating. It also has high mechanical strength and tear resistance. The film is made by a specific stretching and heat treatment sequence to optimize the amorphous phase structure.

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Heat shrinkable polyester film suitable for labeling applications that can be shrunk onto containers and then expand back to cover the container without slipping. The film has specific properties to achieve this: it shrinks more in the width direction than the length direction, has high thermal contraction in both directions, and a low shrinkage force in the length direction. This is achieved by optimizing the film stretching and heating process to increase mobile amorphous regions that contract less than rigid amorphous regions. The film is longitudinally stretched, then intermediately heated to convert amorphous to mobile, followed by width stretching and forced cooling.

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A simplified heat shrinking apparatus for shrink packaging that improves print quality and throughput compared to existing systems. The apparatus uses a moving conveyor belt with an air jet unit mounted beneath it. As the packages move on the belt, the jet unit blows hot air through a designated section of the belt surface facing the packages. This locally heats and shrinks the seals at the front and rear ends of the packages as they pass over. This targeted heating prevents distortion of printed labels and labels moving during shrinking. The belt motion synchronizes with package conveyance to ensure consistent sealing. The air jet can also have an exhaust recovery system to reuse heated air.

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Heat-shrinkable polyester film for labels that can be shrunk onto containers like bottles. The film has high shrinkage in the width direction for covering most of the container, but also has negative shrinkage in the longitudinal direction to prevent shortening. The film is made by a specific stretching and heating process. The film uses an amorphous monomer like 1,4-cyclohexanedimethanol to increase movable amorphous regions. The film is stretched longitudinally, then relaxed, then stretched widthwise. Intermediate heating and cooling steps are used. This unique process allows the film to have high width shrinkage and negative longitudinal shrinkage.

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Packaging system and method that allows labeling of heat shrinkable containers before shrinking to avoid issues like wrinkling and misalignment. The key is matching the shrink characteristics of the container and label so they shrink equally when heated. This prevents stresses and deformation during shrinking. The method involves applying the label to the container before filling and sealing. The filled container is then shrunk to package the item while the label shrinks too.

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A method to manufacture a labeled article package where multiple labeled items are wrapped in a heat shrinkable film without disordering the protruding portion of the POP labels. The method involves attaching the POP labels to the items with the adhesive side at the ridgeline of the container. This causes the protruding portion to stand up and bend along the upper surface when the heat shrink film is applied. This prevents bending of the protruding portion when the items are wrapped in the heat shrink film.

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Heat shrinkable polyester film that can be wound around bottles directly for labeling applications, without the need for separate adhesive sealing. The film shrinks longitudinally when heated, allowing it to conform to bottle shapes. The film has a specific molecular orientation in both the longitudinal and width directions, with a ratio of absorbance at 1340 cm-1 to 1410 cm-1 between 0.55 and 1 in the longitudinal direction, and between 0.5 and 0.9 in the width direction. This orientation profile provides balanced shrinkage force in both directions for labeling bottles. The film also has specific shrinkage stress properties in both directions when heated.

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Heat shrinkable film for decorating squeeze bottles that sticks well to the bottle surface, doesn't distort during shrinking, and provides a fully enclosed design without falling off during use. The film has specific shrinkage ratios in width and length directions to prevent lifting near the cap. It adheres to the entire bottle surface including the cap and bottom. This allows printing information, patterns, and designs on the film that can be shrunk onto squeeze bottles for a fully enclosed decorative packaging. The film is wrapped around the bottle, heat shrunk, and then opened to provide a sealed, printed squeeze bottle with an intact bottom.

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