A kind of ultrasonic heat-sealing film for preparing aircraft inner wall insulation sealing bag and preparation method thereof

Abstract

The invention discloses an ultrasonic sealing film for preparing thermal-isolating, soundproof, fire-retardant, moistureproof, shock-resistant and high-strength insulating sealable bags on the inside walls of aircrafts, and a preparation method thereof. According to the ultrasonic sealing film for preparing insulating sealable bags and the preparation method thereof, the thickness of a substrate of the film is 0.008-0.05 mm, the coating weight of an ultrasonic sealing polyurethane adhesive is 5-35g / m<2>, a reinforcing fiber web is composed of polyamide fibers by way of weaving, and the proportion of the polyamide fibers is 0.006-0.035 ounces / cubic Zhang, the adhesive coating mode refers to one of comma blade coating, bar coating, web coating, extrusion coating and slot coating, the drying temperature is 80-110 DEG C, and the coating speed is 15-55 m / min. The prepared ultrasonic sealing film is subjected to press fit by using an ultrasonic seam-sealed machine. Therefore, the sealable bag (in a shell of an aircraft) prepared by press fit, and can meet the requirements of American FAA (federal aviation administration) after being filled with glass fiber felts; and the peel strength of the press-fitted sealable bags is more than 400g / cm<2>400.

Description

technical field [0001] The invention relates to an ultrasonic heat-sealing film and a preparation method thereof, in particular to an ultrasonic heat-sealing film used for preparing insulating and sealing bags on the inner wall of an aircraft and a preparation method thereof. Background technique [0002] Although the global commercial aircraft industry has been affected by the current economic downturn, the long-term outlook of the global commercial aircraft industry remains positive. For the industry's most important product - narrow-body and wide-body aircraft for passenger and cargo transportation, that is, large commercial aircraft words, especially so. [0003] Forecasts for the next 20 years indicate that fare passenger miles, the driver of the global commercial aircraft industry, will grow by approximately 5% per year, which is twice the expected growth rate for the entire global economy. Orders for commercial aircraft in 2006 and 2007 also reached a new high of 4,0...

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Problems solved by technology

[0012] Wang Jingchang disclosed a kind of aluminum foil reinforced paper with mesh reinforcement in the Chinese utility model patent with application number 91213303.1, which belongs to a kind of outer packaging paper with strong heat insulation, heat preservation and tensile resistance. As a result, the currently used paper for aluminum packaging bags has poor tensile strength and cannot withstand extrusion, pressure, and falling during long-distance transportation.

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