A mold for extrusion molding includes an extrusion port and a plastic channel. The extrusion port is configured to extrude a plastic composition containing at least one kind of plastic. The plastic channel is configured to cause the supplied plastic composition to flow to the extrusion port. The plastic channel includes a first channel, a second channel, and a third channel. The second channel is connected to the first channel and has a channel cross-sectional area gradually decreasing downstream in a flowing direction of the plastic composition. The third channel is connected to the second channel and configured to cause the plastic composition to flow to the extrusion port. The third channel has a channel cross-sectional area gradually decreasing downstream in the flowing direction of the plastic composition.

A mold for extrusion molding includes an extrusion port and a plastic channel. The extrusion port is configured to extrude a plastic composition containing at least one kind of plastic. The plastic channel is configured to cause the supplied plastic composition to flow to the extrusion port. The plastic channel includes a first channel, a second channel, and a third channel. The second channel is connected to the first channel and has a channel cross-sectional area gradually decreasing downstream in a flowing direction of the plastic composition. The third channel is connected to the second channel and configured to cause the plastic composition to flow to the extrusion port. The third channel has a channel cross-sectional area gradually decreasing downstream in the flowing direction of the plastic composition.

A honeycomb extrusion die (120) includes a die body (342) including an inlet face (315) and an outlet face (341). A plurality of pins (330) extend from the die body (342), wherein the pins (330) are arranged to define primary (312P) and secondary slots (312S). Primary slots (312P) include primary slot inlets (320P) and primary slot outlets (3120) and the secondary slots (312S) include secondary slot inlets (312SI) and secondary slot outlets (312SO). Feedholes (317) extend within the die body (342), the feedholes (317) including feedhole outlets (319), wherein the feedhole outlets (319) intersect only with the primary slot inlets (320P). First surface indentation features (345) extend into side surfaces (332) of the plurality of pins (330) defining the primary slots (312P). The first surface indentation features (345) are spaced from the primary slot outlets (3120). The secondary slots (312S) are devoid of surface indentation features. Other die bodies, extruders, and methods are disclosed.

An apparatus and method for manufacturing a workpiece using optical dimensioning. The apparatus comprises a tool configured to alter at least one feature of the workpiece. An imaging system is coupled to the tool and defines an optical axis. The imaging system is configured to capture a plurality of images of the at least one feature of the workpiece. A controller comprises one or more processors. The controller is configured to analyze the plurality of images to determine measured dimensions of the at least one feature of the workpiece. The controller is further configured to define a three-dimensional path for operating the tool by applying a predefined modification to the measured dimensions of the at least one feature of the workpiece.

A plant for making spunbond type polymeric filament defining an extrusion direction and including, in order along the extrusion direction, an extrusion head including at least one main channel to allow the passage of polymeric fluid through the extrusion head, a distributor including at least one distribution conduit in fluid passage connection with the main channel to distribute the fluid, at least one spinneret having holes each running parallel to the extrusion direction in fluid passage connection with the distribution conduit and suitable for extruding the fluid to make a respective polymeric filament, at least one distribution tank between the distributor, downstream of the conduit, and the spinneret, upstream of the holes, connecting, in fluid passage connection, the conduit and holes and defining a first thickness along the extrusion direction between 3 and 5 mm.

A plant for making spunbond type polymeric filament defining an extrusion direction and including, in order along the extrusion direction, an extrusion head including at least one main channel to allow the passage of polymeric fluid through the extrusion head, a distributor including at least one distribution conduit in fluid passage connection with the main channel to distribute the fluid, at least one spinneret having holes each running parallel to the extrusion direction in fluid passage connection with the distribution conduit and suitable for extruding the fluid to make a respective polymeric filament, at least one distribution tank between the distributor, downstream of the conduit, and the spinneret, upstream of the holes, connecting, in fluid passage connection, the conduit and holes and defining a first thickness along the extrusion direction between 3 and 5 mm.

Polymeric netting comprising polymeric ribbons and polymeric strands, each of the polymeric ribbons and polymeric strands having a length and a width, wherein the length is the longest dimension and the width is the shortest dimension, wherein a plurality of the polymeric strands are bonded together to form a netting layer, wherein adjacent polymeric strands in the netting layer are bonded intermittently at multiple locations along their respective lengths, wherein the netting layer has first and second opposing major surfaces, wherein the polymeric ribbons have a height-to-width aspect ratio of at least 2:1 and a minor surface defined by their width and length, and wherein the minor surface of a plurality of the polymeric ribbons is bonded to the first major surface of the netting layer. Polymeric netting described herein are useful, for example, in an absorbent article.

The present invention is directed to a process for producing a modified olefin polymer in an extruder having a feed zone, a melting zone, optionally a mixing zone and optionally a die zone, (A) introducing a stream of an olefin polymer into the feed zone of the extruder; (B) introducing a stream of a free radical generator directly into the feed zone or the melting zone or the mixing zone, if present, of the extruder; (C) introducing a stream of a functionally unsaturated compound directly into the feed zone or the melting zone or the mixing zone, if present, of the extruder; (D) extruding the mixture in the extruder at a temperature which is greater than the decomposition temperature of the free radical generator and the melting temperature of the olefin polymer but less than the decomposition temperature of the olefin polymer thereby producing the modified olefin polymer in the extruder; and, optionally, (G) passing the melt of the modified olefin polymer through the die zone to a pelletiser.

A laminate comprising: a gas barrier layer (I) comprising a modified starch (A) having an average amylose content of 45% by mass or more and a water-soluble polymer (B); and a substrate (II) adjacent to the gas barrier layer (I), wherein the laminate exhibits a degree of biodegradation of 80% or more in a biodegradability test in accordance with ISO 14855-1.

Disclosed herein is a multilayered article comprising a core layer comprising a thermoplastic polymer; where the thermoplastic polymer comprises a polyolefin, thermoplastic starch, and a compatibilizer; where the compatibilizer does not contain ethylene acrylic acid; where the polyolefin is not polypropylene and where the polyolefin present in an amount of greater than 40 wt %, based on a total weight of the core layer; a first layer comprising a thermoplastic resin; and a second layer comprising a thermoplastic resin; where the first layer and the second layer are devoid of fillers; where the first layer is disposed on a side of the core layer that is opposed to the side that contacts the second layer; where the multilayered article has an optical clarity of greater than 80% when measured as per ASTM D 1746 and a total haze less than 8% when measured as per ASTM D 1003.