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US 2019/0291400 A1Published application
Multilayer Composites and Apparatuses and Methods for Their Making
OwnerAlistair D. Westwood, Galen C. Richesoninventors
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Abstract
Provided are multi-beam meltblowing apparatuses having a ridged collecting surface, methods for making multilayer meltblown composites using such apparatuses, and multilayer meltblown composites made therefrom. Also provided are a multilayer composite comprising an elastic layer and at least one ridged layer and a method for making the multilayer composite.
Claims17
An apparatus for making a multilayer composite, comprising:
- a first extruder;
- a first die connected to the first extruder for producing a first layer;
- a second extruder;
- a second die connected to the second extruder for producing a second layer;
- an intermediate extruder;
- an intermediate die connected to the intermediate extruder for producing an intermediate layer and positioned such that the intermediate layer is between the first and second layers;
- a first collecting surface positioned to collect the first layer;
- and
- a second collecting surface positioned to collect the second layer,
- wherein the first and second collecting surfaces create a nip through which the first layer, the second layer, and the intermediate layer are passed to form a multilayer composite, and
- wherein at least one of the first and second collecting surfaces is ridged.
8 more elements
(canceled)
An apparatus for making a multilayer composite, comprising:
- a first extruder;
- a first die connected to the first extruder for producing a first layer;
- a second extruder;
- a second die connected to the second extruder for producing a second layer;
- a ridged first collecting surface positioned to collect the first layer;
- and
- a ridged second collecting surface positioned to collect the second layer,
- wherein the first and second ridged collecting surfaces create a nip through which the first layer and the second layer are passed to form a multilayer composite.
5 more elements
An apparatus for making a multilayer composite, comprising:
- a first extruder;
- a first die connected to the first extruder for producing a first layer;
- a second extruder;
- a second die connected to the second extruder for producing a second layer;
- an intermediate extruder;
- an intermediate die connected to the intermediate extruder for producing an intermediate layer and positioned such that the intermediate layer is between the first and second layers;
- and
- a ridged collecting surface positioned to collect the first layer, the second layer, and the intermediate layer to form a multilayer composite.
5 more elements
A method for forming a multilayer composite comprising the steps of:
- (a) producing a first layer using a first die;
- (b) producing a second layer using a second die;
- (c) producing an intermediate layer using an intermediate die;
- (d) providing a first collecting surface positioned to collect the first layer and a second collecting surface positioned to collect the second layer, wherein the first and second collecting surfaces create a nip, and wherein at least one of the first and second collecting surfaces is ridged;
- (e) passing the first layer, the second layer, and the intermediate layer through the nip, wherein the intermediate layer is between the first layer and the second layer;
- and
- (f) forming a multilayer composite.
4 more elements
-20. (canceled)
Dependencies are inferred from the claim text.