Multi-layer, perforated polyolefin films comprising at least one polyolefin layer having a high visible light absorbance and at least one polyolefin film having a high opacity, a support layer interposed between the first and second layers, a plurality of perforations penetrating from the first and second layers, a shore D hardness of at least (35) and wherein at least one of the first two layer has a surface tension of at least (34) dyne/cm are provided. Methods for preparation and use of the poly olefin films are also provided.

An upstream/downstream process for making map pocket stiffeners formed of extruded material and a wire. The extrusion is drawn through a die of a main extruder forming a main body with a channel and the extrudate is then pulled through a first cooling tank to cool the extrudate and set the profile. The wire is automatically indexed into the channel by a programmable indexing device for proper location and distance between each piece of wire. The extrudate with the wire is re-heated and then pulled through a secondary extruder to encapsulate and seal the wire within the extruded material. The extrudate is cooled in a second cooling tank and passes through a series of rollers to achieve a predetermined shape before being cut and profiled to predetermined lengths and dimensions.

A multi-layer sheet for forming an expanded foam container, the multi-layer sheet including a first layer of an expanded foam material including a first polyolefin-based material including at least one polypropylene-based polymer and a second layer of an unexpected material including a second polyolefin-based material including at least one polypropylene-based polymer that is co-extruded, extrusion coated, or laminated on a first side of the first layer.

The invention relates to a polymer-coated packaging material, a method of manufacturing the same, and products, such as a disposable drinking cup, made from the material. The packaging material comprises a fibrous base (1) of paper or board and an extruded polymer layer (2) containing a blend of (i) 0 to 25 wt-% of a branched low-density polyethylene (LDPE) with a lower melt viscosity and (ii) 75 to 90 wt-% of a linear low-density polyethylene (LLDPE) with a higher melt viscosity. The packaging material of the invention comprises multilayer coatings, e.g. an adhesive innermost and a heat-sealable outermost layer (2, 4) of said blend and a vapor barrier middle layer (3) of at most 90 wt-% of high density polyethylene (HDPE). The layers (2, 3, 4) are brought and adhered to the fibrous base (1) by coextrusion. To maximize renewability of the materials HDPE and LLDPE as used for the structure are of biologic origin.

A plank is described and a method for manufacturing the plank. The plank can be produced by mixing polyvinyl chloride powder, coarse whiting and light calcium compound powder, stabilizer, polyethylene wax, internal lubricant, plasticizer, and impact modifier together, and stirring this mixture. The mixture is then extruded through an extruder compound to form a plastic composite base material. A surface layer is then tiled onto the plastic composite base material using thermal compression, without the use of intermediate adhesive materials. The surface layer can be embossed when it is combined with the mixture being extruded.

A layering structure of plastic flooring is formed by way of an extruder, a rolling conveyor, and a roller unit, and the plastic flooring contains a substrate, a printing layer, and an abrasion resistant layer. The substrate includes at least two sheets which are one-piece extrusion formed by using the extruder so that the at least one sheet stack together. The printing layer is arranged on a top of the substrate and has patterns printed thereon, and the abrasion resistant layer is formed on the printing layer. After the substrate is one-piece extrusion formed, the printing layer and the abrasion resistant layer are conveyed to the roller unit by the rolling conveyor so that the substrate, the printing layer, and the abrasion resistant layer are rolled and pressed together by the roller unit.

Method for making multiple durometer bulb seals and any other types of multiple durometer seals and moldings includes cooling separately at least one structural member and at least one sealing portion, which have different durometers and shapes. At least a first extrusion is drawn through an extruder, forming a structural member profile and the extruded material is pulled along a longitudinal axis to a first calibrator device and first cooling tank to cool the structural member profile to a predetermined temperature. Cooling medium directly contacts the outer and inner surfaces of the first profile. Downstream, the sealing portion is extruded and affixed onto the cooled structural member and pulled further downstream to a second calibrator device and through a second cooling tank to cool the final profile a predetermined amount. Disparity in cooling expansion and cooling differential between the multiple durometers and shapes is avoided or overcome.

The invention comprises a peelable membrane for resealably closing a metal end comprising an outer layer, a tacky layer, and a heat seal layer. The heat seal layer is permanently sealed to the metal end to cover at least one opening in the metal end. The tacky layer causes the peelable membrane to be resealable onto the metal end.

A process for continuous manufacturing of semi-finished products incorporating at least one electronic device (5) positioned between two strips (10, 14) of elastomeric material, each of the strips being extruded, includes: extruding a first strip (10) of elastomeric material, depositing the electronic device (5) on the first strip, extruding a second strip (14) of elastomeric material and depositing it on the first strip (10), exerting a force on the second elastomer strip (14), cutting the strips (10, 14) of elastomeric material incorporating the electronic device (5), and then storing the cut-out strips. Each of the strips (10, 14) of elastomeric material is hot-extruded, and the electronic device (5) is held in place on the first strip (10) of elastomeric material in the longitudinal direction by a means for holding it in place.

A method for producing a film having a security feature for a card-shaped data carrier includes: providing at least one film material having a base color; providing at least one coloring agent; introducing the film material into an extruder of an extrusion apparatus; heating the film material to form a melt; separately heating the coloring agent to form a flowable color; extruding the melt through a nozzle outlet gap of the extrusion apparatus; feeding the flowable color to the extruded melt to form a bead-like mixture; mixing of the flowable color and the extruded melt within the bead-like mixture to form a film. The extruded melt and the flowable color have different material properties so that they do not mix homogeneously, whereby a randomized multi-coloring is visible in plan view of the film. A film and a card-shaped data carrier are associated with aspects of the method.