Drawing for Package Material Elongation

Barrier substrate for packaging containers with excellent gas barrier properties. The barrier substrate is made by coextruding a polyolefin-based stretched film with two resin layers containing polyolefin as the main component and an optional adhesive layer. A vapor deposition film is then applied to the outer surface. The barrier substrate can replace metal-coated substrates for better recyclability. The polyolefin-based barrier has good gas barrier properties and can be used in packaging containers without delamination or corrosion issues when filled with reactive contents.

Source

A polyethylene multilayer substrate with improved ink adhesion, heat resistance, and recyclability compared to conventional laminates. The substrate has a specific layer configuration and has been stretched. It consists of layers containing high/medium density polyethylene, medium density polyethylene, and linear low density polyethylene. This sequence balances ink adhesion, heat resistance, and manufacturability. Stretching the substrate further improves properties. The stretched multilayer substrate can be used as a base for laminates like packaging materials, with improved ink adhesion and heat resistance compared to conventional laminates made by laminating different resin films. The laminates can also have better recyclability since they are made of the same polyethylene material throughout.

Source

Eco-friendly vinyl packaging material that replaces aluminum and starch, decomposes over time, and reduces greenhouse gas emissions when incinerated. The packaging material contains a blend of high-density polyethylene (HDPE), low-density polyethylene (LDPE), biodegradable bionyl, and additives like stearic acid, copper, manganese, zinc, calcium carbonate, softener, and octene. The bionyl includes ethylene vinyl acetate (EVOH), a biodegradable mixed powder, and an oxidative biodegradable catalyst. The packaging is manufactured by extrusion and stretching the blended material. It can be used for food and cosmetics packaging that decomposes over time and reduces environmental impact compared to traditional vinyl.

Source

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.

Source

Clear, rigid medical packaging that can be sterilized by autoclave steam without warping or shrinking. The packaging is made by extruding a crystalline thermoplastic like PET, then partially stretching the film, heating it, and thermoforming it into the final shape. This process limits crystal growth to small spherulites rather than large crystals that cause warpage. The film is then sealed around the device and steam sterilized. The spherulitic crystals provide clarity and strength, but the restricted crystal growth prevents warping during sterilization. The packaging can be made by coextruding layers of different thicknesses that are split and stacked by multiplier units to form the final multilayer structure.

Source

Stretched multilayer film for packaging with improved mechanical strength, heat resistance, and barrier properties. The film has alternating layers of PBT (polybutylene terephthalate) and PET (polyethylene terephthalate) without an adhesive layer. The PBT and PET layers have reduced copolymer contents to maintain compatibility and avoid curling during stretching. The film can be produced by coextruding PBT and PET layers and then stretching them using a tenter system. This allows the film to have both the toughness of PBT and the heat resistance of PET.

Source

Stretched multilayer film with improved mechanical strength and heat resistance compared to conventional films. The film has layers of polyethylene terephthalate (PET) and polybutylene terephthalate (PBT) with a heat-sealable resin layer. The PBT content is limited to 25-45% of the total layers. The PBT, PET, and heat-sealable layers are coextruded without adhesives. The film has high puncture strength per thickness and is useful for packaging bags. The coextrusion and stretching process allows simultaneous formation of the layers without separate lamination steps.

Source

A bale wrapper for agricultural baling that uses a powered film pre-stretcher to optimize film usage, prevent film disruptions, and improve bale wrapping tightness. The wrapper has a rotating ring to wrap the bale, a film dispenser, and a powered pre-stretcher unit. The pre-stretcher is driven by a ring adjacent to the wrapper ring. This allows the bale to pass through the ring unobstructed during loading and unloading. The powered pre-stretcher reduces the application force needed to wrap the bale, improving film resistance while using less film.

Source

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.

Source

Stretched packaging film with improved quality and reduced environmental impact by using chemically recycled resin instead of material recycled resin. The stretched film contains a chemically recycled resin, which is made by converting discarded resin into monomers and then polymerizing them. This reduces foreign matter and odors compared to material recycled resin. The chemically recycled resin in the film is less likely to have gels, aggregates, or odors after heat treatment. This improves film quality and appearance when stretched.

Source

Packaging method using paper strapping that allows bottles to expand without breaking during transportation without needing shrink film. The strapping is made with a high percentage of paper fibers oriented perpendicular to the strapping length. This allows the bottles to expand up to 5% without tearing the strapping. If the fibers were parallel, the strapping would tear at that level of expansion. The perpendicular orientation provides flexibility and strength to accommodate bottle expansion.

Source

Laminate for high-performance mono-material packaging containers with improved adhesion and gas barrier properties. The laminate has a vapor deposited film on a stretched polyethylene substrate with a density of at least 0.943 g/cm³. The substrate has a polyethylene layer with an olefin-based elastomer. This improves adhesion between the vapor deposited film and substrate compared to pure polyethylene. The laminate structure is sealant layers, vapor deposited film, stretched polyethylene substrate, gas barrier layer, and sealant layers. The laminate can be used in mono-material packaging containers like laminate tubes with improved delamination resistance and gas barrier performance.

Source

Recyclable packaging material with improved strength, heat resistance, and barrier properties. The packaging material is made by laminating a stretched polyolefin film with a gas barrier layer and a polyolefin layer, and then heat sealing it. The key innovation is using the same polyolefin material for both the substrate and the heat seal layer. This allows recycling the material by separating the polyolefin layers. The stretched polyolefin layer improves strength. The gas barrier layer provides containment. The laminate structure enables recycling by separating the polyolefin layers.

Source

A film for packaging materials that has low contamination properties when stored rolled. The film contains an ethylene-based polymer that meets specific requirements: melt flow rate of 0.01 to 10 g/10 min at 190°C, density of 0.930 to 0.945 g/cm3, molecular weight distribution (MWD) of 2.0 to 3.0, and elongation at break of 200% to 400%. This film can be used as a base material for packaging that avoids contamination issues when stored rolled. The film is made by stretching an ethylene-based polymer with the specified properties.

Source

A stretch hood film packaging device for safely and efficiently enclosing loads like pallets. The device has expandable adsorption units on either side of the load that attach and expand the hood film to cover the load. The adsorption units have rotating support pieces that spread the hood film when activated. This allows the hood film to adsorb and expand from both sides of the load, preventing sticking. A fixing part holds the expanded hood film in place. The expandable adsorption units improve coverage and prevent sticking compared to conventional hood film packaging methods.

Source

A manufacturing method for a stretch film with high transparency and slipperiness for packaging that provides ease of loading and unloading of packaged products. The method involves laminating separate layers of polyethylene (PE) and polypropylene (PP) films using a lamination machine. The resulting laminated film has the advantages of both PE and PP: high transparency from the PP layer and slipperiness from the PE layer. This provides a wide range of packaging films that combine the benefits of transparency and slipperiness for improved product visibility and easier handling compared to using just PE or PP alone.

Source

Biaxially stretched polyamide film for packaging applications that has reduced thickness while maintaining good transparency and wrinkle resistance. The film has a thickness of less than 12 microns, with standard deviations below 0.8 microns in the machine and width directions. It also has low friction coefficients below 0.9 and a haze value of 7.0% or less. The film contains polyamide 6 as the main component, with preferably 60-98% polyamide 6 content. The reduced thickness, low friction, and low haze properties allow thinner films with good transparency and wrinkle suppression for packaging applications.

Source

Packaging laminate with improved tear resistance and recyclability while maintaining barrier properties. The laminate has a thin stretched plastic film as the barrier layer instead of a thicker conventional plastic film. The stretched plastic layer is less than 10 microns thick and has low elongation at break. This allows the paper carrier layer to dominate the tear propagation for easier opening and reduces plastic contamination. The thin stretched plastic provides sufficient barrier properties. The laminate can be recycled like paper due to the paper base.

Source

Propylene-based polymer composition for biaxially stretched films that have improved dimensional stability at high temperatures compared to traditional propylene-based films. The composition contains two or more propylene-based polymers with specific molecular weight distributions. The composition can be used to make biaxially stretched films with reduced shrinkage at elevated temperatures. These films have applications in packaging where high temperature resistance is desired. The composition and films exhibit improved heat resistance without sacrificing other properties like clarity, strength, or processability.

Source

A sustainable packaging method that replaces plastic bubble wrap with paper-based packaging articles that have similar cushioning properties. The method involves continuously supplying Kraft paper with a minimum machine direction stretch of 5% at temperatures between 10-40°C. The paper is plastically deformed to form a structured layer with embossments or flutes. This layer is then joined with a flat cover layer to create a compound layer that forms the packaging article. The paper-based packaging has a similar cushioning effect as bubble wrap but without requiring high temperatures or moisture for deformation. The packaging can be formed into envelopes, boxes, etc.

Source