Patent ID: 7329374
Filing Date: 2008-02-12
Classification: B29C,D06N

Abstract:
1. A method for manufacturing resin films comprising: A first step of injecting polyurethane (PU) containing at least NCO and hydroxyl compound containing OH in a first injecting mixing device for mixing the both to get a first-kind first-phase mixture; A second step of injecting a pigment and a foaming agent in a second injecting mixing device for mixing the both to get a second-kind mixture; A third step of injecting said first-kind first-phase mixture into a first kneading device for mixing and kneading to get a first-kind second-phase mixture; A fourth step of injecting said first kind second-phase mixture in said first kneading device into a second kneading device for further mixing and kneading to become a first-kind third-phase mixture; A fifth step of injecting said first-kind third-phase mixture into a conveyer, and of injecting said second-kind mixture into said conveyer for carrying out mixing said second-kind mixture with said first-kind third-phase mixture to get a third-kind mixture; and A sixth step of sending said third-kind mixture into a coating device, which then performs coating said third-kind mixture on a substrate cloth to form a resin film; said second kneading device is provided with a kneading chamber, two parallel kneading rods located in said kneading chamber, a motor driving said two kneading rods to rotate, an inlet formed in a front end of a tubular wall and connected with an exit of said first kneading device so that said first-kind mixture in said first kneading device injected in said kneading chamber of said second kneading device for mixing and kneading once again said first-kind mixture to become the first-kind third-phase mixture; and said conveyer is provided with a conveying chamber, two parallel threaded rods fitted in said conveying chamber, a motor driving said two threaded rods to rotate, an inlet formed respectively in a front end and in an intermediate portion, an exit formed in a rear end, said inlet at the front end connected with an exit of said second kneading device to let said first-kind third-phase mixture in said second kneading device move into said conveyer, said inlet at the intermediate portion connected with an exit of said second injecting mixing device to let said second-kind mixture in said second injecting mixing device flow into said conveyer to mix with said first-kind third-phase mixture to become a third-kind mixture, which is then conveyed by rotation of said two threaded rods to a rear end of said conveyer.