In one embodiment, a method of forming an extruded board includes mixing a resin and a foaming agent, melting the mixed resin and foaming agent to form a uniformly colored extrudate, differentially expanding voids formed from the foaming agent within the uniformly colored extrudate by passing the uniformly colored extrudate through a breaker plate, forming a board with the differentially expanded voids and uniformly colored extrudate, and forming lightened portions on an outermost surface of the formed board.

In one embodiment, a method of forming an extruded board includes mixing a resin and a foaming agent, melting the mixed resin and foaming agent to form a uniformly colored extrudate, differentially expanding voids formed from the foaming agent within the uniformly colored extrudate by passing the uniformly colored extrudate through a breaker plate, forming a board with the differentially expanded voids and uniformly colored extrudate, and forming lightened portions on an outermost surface of the formed board.

A plasticized PVC formulation for foam extrusion including polyvinyl chloride, at least one plasticizer, at least one nucleating agent and a chemical blowing agent, wherein the plasticized PVC formulation is a dry blend containing 0.5 to 5% by weight of one or more nucleating agents and 0.1 to 3% by weight of the chemical blowing agent, wherein the blowing agent is sodium bicarbonate and the nucleating agent is talcum, and a foam extrusion method using said formulation. The extruded plasticized PVC foam is particularly suitable for rock shield pads used for pipeline protection. The foams are lightweight and require less consumption of materials with comparable properties to corresponding solid articles.

The present invention relates to a spreading device for a foaming furnace, including a first spreading component and a second spreading component symmetrically mounted on two sides in a hearth of a foaming furnace. Both the first spreading component and the second spreading component are provided with a spreading roll group composed of at least two spreading rolls, and a driving device for driving the spreading roll group. The spreading device further includes a fixing frame, the fixing frame including a first mounting seat and a second mounting seat. The spreading roll includes a first mounting portion and a second mounting portion. The first mounting portion is rotationally connected to the first mounting seat, and the second mounting portion is rotationally connected to the second mounting seat. The spreading device of the present invention has good stability during work, and significantly improves an unfolding effect.

Polymeric multilayer film comprising a layer exhibiting a random network of strands and connective regions that is separable from the remaining polymeric multilayer film. The polymeric multilayer films are useful, for example, for tape and graphic articles.

Polymeric multilayer film comprising a layer exhibiting a random network of strands and connective regions that is separable from the remaining polymeric multilayer film. The polymeric multilayer films are useful, for example, for tape and graphic articles.

A polystyrene (PS) composition for making an extruded foam, the PS composition comprising polystyrene, a blowing agent, and an additive selected from glycerol monostearate (GMS), glycerol tri-stearate (GTS), mineral oil (MO), epoxidized soy oil (ESO), epoxidized polybutadiene, or combinations thereof. Methods of producing a low density polystyrene (PS) foam are also provided.

A method of making plastic flooring contains steps of: A. providing the substrate and delivering the substrate toward a rolling unit; B. delivering a printing layer, wherein the printing layer is blank and is delivered toward the rolling unit by way of a second delivery roller mechanism; C. rolling, wherein the rolling unit rolls the substrate and the printing layer, and the printing layer has three-dimensional embossing; D. digital printing, wherein color material being printed on three-dimensional embossing by using the digital print unit; E. coating an abrasion resistant layer, wherein a coating unit coats wear-resistant materials of the abrasion resistant layer on the printing layer; and F. shaping, wherein the plastic flooring material is shaped so as to dry and harden the abrasion resistant layer.

A method of making plastic flooring contains steps of: A. providing the substrate and delivering the substrate toward a rolling unit; B. delivering a printing layer, wherein the printing layer is blank and is delivered toward the rolling unit by way of a second delivery roller mechanism; C. rolling, wherein the rolling unit rolls the substrate and the printing layer, and the printing layer has three-dimensional embossing; D. digital printing, wherein color material being printed on three-dimensional embossing by using the digital print unit; E. coating an abrasion resistant layer, wherein a coating unit coats wear-resistant materials of the abrasion resistant layer on the printing layer; and F. shaping, wherein the plastic flooring material is shaped so as to dry and harden the abrasion resistant layer.

A method of recycling a first polymer from a multi-component polymer product may include subjecting the multi-component polymer product that includes a first polymer and at least one additional component to conditions to melt the first polymer; and filtering the at least one additional component from the molten first polymer.