发明名称 |
Method for producing a lofted mat |
摘要 |
A lofted mat of filaments is produced from process and apparatus including: supplying a plurality of streams of molten polymeric material; attenuating said streams of material into continous filaments through the action of a stream of fluid moving from an attenuation means; said filaments being entrained in said fluid moving from said attenuation means, said filaments having non-uniform residual stresses established therein; moving said stream of fluid and filaments along a first surface positioned intermediate said attenuation means and a foraminous surface; establishing a vacuum at said foraminous surface; directing said stream of fluid and filaments into said foraminous surface obliquely oriented with respect to said first surface such that a first portion of said fluid separates from the filaments and passes through said foraminous surface and a second portion of said fluid moves said filaments along the foraminous surface; collecting said filaments in a randomly dispersed, substantially uniform layer having a first thickness; passing said layer through crimp inducing means adapted to permit said unbalanced, residual stresses to randomly crimp said filaments to form said lofted mat having a second thickness greater than said first thickness.
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申请公布号 |
US4359445(A) |
申请公布日期 |
1982.11.16 |
申请号 |
US19810268962 |
申请日期 |
1981.06.01 |
申请人 |
OWENS-CORNING FIBERGLAS CORPORATION |
发明人 |
KANE, JOHN L.;NADKARNI, VIKAS M. |
分类号 |
D04H3/16 |
主分类号 |
D04H3/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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