The method for producing a container consisting of a rigid outer container and a deformable inner bag. A first screw conveyor supplies a first thermoplastic plastics material for the outer container and at least a second and a third screw conveyor supplies at least a second and a third thermoplastic plastics material for the inner bag to an extruder which coextrudes a parison consisting of at least the first, second and third layers. The parison is inflated by a pressure medium to bring it into contact with the wall of the blow mould, where excess material below the welded seam is cut off and the container is removed from the blow mould. The second thermoplastic plastics material forming the outer layer of the inner bag consists of a material which, in the hardened state, has a rough surface having microscopically small elevations and depressions.

The present disclosure relates to a polyester resin blend and a molded article formed therefrom. The polyester resin blend exhibits excellent processability even if it contains recycled polyethylene terephthalate as well as virgin polyethylene terephthalate, and can provide high-quality molded articles, especially by extrusion blow molding. In addition, it can be reused, and it is expected to be useful for providing continuously usable plastics that have been recently attracting attention.

A chaff resistant and economically recyclable dunnage tray is disclosed. In one aspect, the dunnage tray includes a base portion formed from a first material and a top portion formed from a second material. The top portion is secured to the base portion, and defines at least one cavity or recess for supporting a machine component. The first and second materials are high density polyethylene (HDPE) materials with the second material including polyethylene elastomers, or plastomers. In one example, the dunnage tray is formed by thermoforming a co-extruded sheet including a first layer corresponding to the bottom structural portion and a second layer corresponding to the elastomer or plastomer portion. In one example, the dunnage tray is formed by thermoforming an extruded sheet to form the base portion and by attaching separately formed top portions with polyethylene elastomers, or plastomers to the thermoformed base portion. This invention provides solutions to chaffing or chipping of polyethylene dunnage trays, control of coefficient of friction and softness to minimize parts from sliding/abrading dunnage surfaces, and eliminates requirements for disassembly of dunnage trays and separation of materials prior to recycling.

An advanced siding panel that combines a traditional siding appearance with improved insulation, structural integrity, and improved thermal characteristics.

A method of manufacturing sheeting is provided, the method including the steps of forming multiple recesses in a symmetrical repeat pattern on a sheet of material, extruding a molten material to form an upper outside wall and a lower outside wall, interposing the formed sheet between the upper outside wall and the lower outside wall, and fixing the interposed sheet to the upper outside wall and the lower outside wall. Also provided is sheeting having an upper outside wall and a lower outside wall and an interposed sheet fixed between the outside walls. The interposed sheet includes multiple recesses in a symmetrical repeat pattern, where the upper and lower outside walls are, or the interposed sheet is, manufactured from a material which includes a polymeric material.

A device and method for the production of a tubular film in a blown film method with a blown film line. It includes a lay-flat device and a takeoff device with a pair of take-off rolls, in which the tubular film can be laid flat, and at least one venting device of the previously flattened tubular film. The deaerating device includes a movement device for a cutting device with cutting elements and is arranged in the transport direction of the flattened tubular film downstream of the pair of take-off rolls so that the flattened tubular film can be slit and deaerated by the deaerating device.

A thermoplastic resin is molded to define a container bearing a surface 2D code signal, such as a digital watermark pattern. In some arrangements, the mold dimensions are tailored, and process parameters are selected, so that an indentation in the mold gives rise to a corresponding indentation—rather than a corresponding protrusion—in the shaped plastic. In other arrangements, a metal mold is provided with a patterned resin on its surface to define the 2D code signal. The resin may take the form of a rigid or non-rigid insert that can be removed or re-worked to change the code signal without changing the metal mold. A variety of other improvements and arrangements are also detailed.

A nozzle tool system for extrusion blow molding has an intermediate module and at least first and second nozzle outlet units, each forming an adjustable nozzle outlet gap between a mandrel extending axially and a deformable sleeve. The units can be connected with the intermediate module as replacements for one another, and have a first outlet diameter and a larger second outlet diameter different from one another. At least one setting drive for reversible deformation of the sleeve is arranged on the intermediate module and can be connected with the deformable sleeve by way of a releasable coupling arrangement. The first nozzle outlet unit delimits a first setting path of the setting drive, using at least one inner mechanical stop, and the second nozzle outlet unit delimits a second setting path of the setting drive, greater than the first setting path, using at least one inner mechanical stop.

Mineral-filled polymer compositions and methods of forming such polymer compositions into a thermally stable article are provided. Methods of forming a polymeric article include providing a polymer composition comprising a crystallizable polymer, a mineral filler in an amount of more than about 15 wt-% based on the total weight of the polymer composition, and an impact modifier, wherein the polymer composition is at a temperature less than a crystallization temperature of the crystallizable polymer. The methods further include disposing the polymer composition in a mold, forming the polymer composition into an article within the mold, and releasing the article from the mold. The methods can include thermoforming the polymer composition in a mold, or injection molding the polymer composition in a molten form in a mold.

An improved sheet for making a three-dimensional article for holding food, such as a food tray, and a method of making a three-dimensional article. The sheet comprises a substrate and a laminate film. The laminate film may comprise a ceramic film and a copolymer layer. The copolymer layer can repair any cracks that occur due in the ceramic film when the sheet is thermoformed. The food tray is considered a single material that is recyclable.