Patent classifications
B29K2023/0625
Multilayer films and sealed packages made from these films
Multilayer Films have a first skin layer that is prepared from a high density polyethylene and a second skin layer (also referred to as the sealant layer) that is prepared from a linear low density polyethylene (LLDPE) having a density of from 0.90 to 0.92 g/cc and a Dilution Index, Yd, of greater than 0°. Seals can be prepared by placing two pieces of this film against each other such that the sealant layers are in contact with each other, then applying heat to at least one high density skin layer such that heat is transmitted/conducted through the multilayer film in a sufficient amount to melt the sealant layer and form a seal. The use of LLDPE having a Dilution Index of greater than 0° has been found to improve the sealing performance of multilayer films in comparison to multilayer films where the sealant layer is a conventional LLDPE having a Dilution Index of less than 0°.
Multilayer films and sealed packages made from these films
Multilayer Films have a first skin layer that is prepared from a high density polyethylene and a second skin layer (also referred to as the sealant layer) that is prepared from a linear low density polyethylene (LLDPE) having a density of from 0.90 to 0.92 g/cc and a Dilution Index, Yd, of greater than 0°. Seals can be prepared by placing two pieces of this film against each other such that the sealant layers are in contact with each other, then applying heat to at least one high density skin layer such that heat is transmitted/conducted through the multilayer film in a sufficient amount to melt the sealant layer and form a seal. The use of LLDPE having a Dilution Index of greater than 0° has been found to improve the sealing performance of multilayer films in comparison to multilayer films where the sealant layer is a conventional LLDPE having a Dilution Index of less than 0°.
Apparatus and method for making inflated articles
A sealing device generally includes a rotatable support cylinder having an outer, circumferential surface and a heating element disposed about such surface and secured thereto such that the heating element rotates therewith. The heating element is coiled about the outer surface of the cylinder in the form of an overlapping helical pattern. Juxtaposed film plies may be sealed together by bringing the sealing device into rotational contact with the juxtaposed film plies and heating the heating element to a temperature sufficient to cause the film plies to seal together.
Apparatus and method for making inflated articles
A sealing device generally includes a rotatable support cylinder having an outer, circumferential surface and a heating element disposed about such surface and secured thereto such that the heating element rotates therewith. The heating element is coiled about the outer surface of the cylinder in the form of an overlapping helical pattern. Juxtaposed film plies may be sealed together by bringing the sealing device into rotational contact with the juxtaposed film plies and heating the heating element to a temperature sufficient to cause the film plies to seal together.
Eco-friendly flooring and method for manufacturing same
Described herein is flooring formed of an eco-friendly material, where the flooring has excellent heat resistance, durability, abrasion resistance and dimensional stability, and is formed of a non-PVC material and thus is recyclable via an extrusion processing at the time of disposal after use. Specifically, eco-friendly flooring is described in which a coating layer, an overlayer having ionomers, a printing layer, at least one middle layer, and at least one underlayer are laminated in order, where the overlayer of the flooring has ionomers, at least one of the middle layer and the underlayer has a thermoplastic polyolefin-based resin, a styrene-based resin, oil, and a filler, the thermoplastic polyolefin-based resin is contained in an amount of 50 to 150 parts by weight with respect to 100 parts by weight of the styrene-based resin, and the styrene-based resin may contain 25 to 45% styrene.
Multilayer film comprising cyclic olefin copolymer
Disclosed is a multilayer film structure, comprising, in order, a puncture resistant layer comprising at least one cyclic olefin copolymer (COC) and at least one ionomer or polyolefin, a tie layer and a sealant layer. The structure can be coextruded and can be prepared using a triple bubble process.
BIAXIALLY ORIENTED POLYOLEFIN FILM WITH HIGH MOISTURE VAPOR BARRIER AND STIFFNESS PROPERTIES
Described are coextruded multi-layer biaxially oriented polyolefin barrier films with improved processability, moisture vapor barrier, and stiffness. The disclosed films comprise a cyclic olefin copolymer (COC) core layer blended with hydrogenated hydrocarbon resin and at least one outer layer having functionality for solvent resistance, heat sealing, or winding, or printing/coatings or adhesion for lamination.
CROSSLINKABLE COMPOSITION COMPRISING POLYETHYLENE AND USE THEREOF FOR ROTATIONAL MOLDING
Crosslinkable composition comprising: (a) from 80% by weight to 98% by weight, preferably from 85% by weight to 95% by weight, of at least one high density polyethylene (HDPE); (b) from 2% by weight to 20% by weight, preferably from 5% by weight to 15% by weight, of at least one linear low density polyethylene (LLDPE); (c) from 0.2 parts by weight to 1.5 parts by weight, preferably from 0.5 parts by weight to 0.8 parts by weight, with respect to 100 parts by weight of (a)+(b), of at least one crosslinking agent selected from organic peroxides; (d) from 0.2 parts by weight to 2.5 parts by weight, preferably from 0.5 parts by weight to 1.0 parts by weight, with respect to 100 parts by weight of (a)+(b), of at least one co-crosslinking agent selected from allyl compounds. Said crosslinkable composition can advantageously be used in rotational molding (“rotomolding”).
PATTERNED MICROPOROUS BREATHABLE FILM AND METHOD OF MAKING THE PATTERNED MICROPOROUS BREATHABLE FILM
Microporous breathable films include a polyolefin and an inorganic filler dispersed in the polyolefin.
Methods of making melt-bonded thermoplastic bags with tailored bond strength
One or more implementations of a multi-layered bag with reinforced seals include an outer layer or bag and an inner layer or bag positioned within the outer layer or bag. The multi-layered bag further includes a draw tape positioned near the opening of the multi-layered bag. The draw tape can allow a user to at least partially close the multi-layered bag by drawing the layers of the bag together. The multi-layered bag further includes one or more tape seals that bond the draw tape to layers of the bag. The tape seals can be reinforced and include at least seven plies bonded together. One or more implementations further include methods of forming multi-layered bags with reinforced seals.