Method for producing a nonwoven fabric used as an engine hood insulator material
AssigneeHassan Tekstil Sanayi Ve Ticaret A.S.
InventorAhmet SISMAN
Life of this patent
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Abstract
A coated nonwoven product used to make engine hood insulation material is produced by a method which involves needle punching a carded, cross-lapped web, then calendering the resulting web and then applying a foam coating. Rotary screen printing is used to apply a dot pattern of an acrylic emulsion to the dried, foam-coated web. Thermoplastic and/or thermoset material is deposited onto the acrylic coating and excess material is removed by vacuum, leaving a corresponding dot coating pattern of said material. The coated web is heated using infrared energy before cooling, cold calendering and winding-up.
Claims40
A production method for insulation material, the method comprising the following production stages:
- bale opening (10);
- blending (20);
- dosing (30);
- carding (40);
- cross laying (50);
- drafting (60);
- needle punching (70);
- calendaring (80);
- application of chemicals by foaming (90);
- pre-drying (100);
- drum drying (110);
- partial surface coating (120);
- infrared heating (130);
- cooling (140);
- passing through a cold calender (150);
- and
- winding (160).
A production method related to obtaining an insulation material from a semi-finished nonwoven fabric (1), wherein the method has the following production stages:
- application of acrylic on semi-finished nonwoven fabric (200);
- scattering thermoplastic and/or thermoset powder from on the acrylic coated semi-finished nonwoven fabric (210);
- vacuuming a part of the powder material from the thermoplastic and/or thermoset-coated semi-finished nonwoven fabric (220);
- fixing the thermoplastic and/or thermoset on the surface in the form of spots by heating (230);
- passing through a cold calender and shaping (240);
- and
- winding the second layer of the insulation material (250);
Dependencies are inferred from the claim text.