公开(公告)号：US20120267814A1

公开(公告)日：2012-10-25

申请号：US13544763

申请日：2012-07-09

Applicant: Gregory Branch ,  Krishna Nedella

Inventor： Gregory Branch ,  Krishna Nedella

IPC: B29C44/34

CPC classification number: B29C44/3453 ,  B29C44/20 ,  B29C44/3446 ,  B29C51/082 ,  B29K2067/00 ,  B29K2067/003 ,  B29K2105/04 ,  B29K2105/041

Abstract: Disclosed herein are roll fed air heated flotation ovens and related thermoforming systems, assemblies, and machines that enable the corrugation-free expansion of a gas impregnated thermoplastic web passing through an oven chamber (without use of a pin-chain assembly), as well as to related methods. In an embodiment, a gas impregnated thermoplastic web is conveyed and expanded through an elongated air heated oven chamber, wherein the elongated oven chamber includes a plurality of downwardly directed heated air nozzles positioned at regular intervals along and within the upper portion of the oven chamber, and a plurality of upwardly directed heated air nozzles positioned at regular intervals along and within the lower portion of the oven chamber, but staggered apart from the downwardly directed heated air nozzles such that the gas impregnated thermoplastic material web undulates in an up and down wavelike fashion, thereby minimizing sagging, bagging, puckering, and/or buckling of the web.

Abstract translation: 本文公开了辊式进料空气加热的浮选炉和相关的热成型系统，组件和机器，其能够使通过烘箱室（不使用销链组件）的气体浸渍的热塑性网的无波纹膨胀以及 到相关方法。 在一个实施例中，气体浸渍的热塑性纤维网通过细长的空气加热的烘箱室被输送和膨胀，其中细长的烘箱室包括多个向下定向的加热的空气喷嘴，其沿着烤箱室的上部并且位于恒温室内， 以及多个向上定向的加热的空气喷嘴，其沿着炉室的下部分内部和内部以规则的间隔设置，但是与向下指向的加热的空气喷嘴分开交错，使得气体浸渍的热塑性材料卷材以上下波浪形式起伏 从而最小化卷筒纸的下垂，装袋，褶皱和/或弯曲。