Production technology for manufacturing soft layer sound insulation pad and hard layer sound insulation pad by utilizing high-temperature steam

Abstract

The invention relates to a production technology for manufacturing a soft layer sound insulation pad and hard layer sound insulation pad by utilizing high-temperature steam. The production technology comprises the following steps of: a raw material paving step, a compression forming step, a cooling customization step and a water cutter cutting step, wherein the temperature of an upper module is controlled at 140 DEG C-160 DEG C in compression forming, the temperature of a lower module is controlled at 160 DEG C-180 DEG C, and mould closing is carried out for compression forming; after the mould closing is carried out for 10-20 seconds, the upper module is vacuumized, the vacuumizing time is controlled within 10-20 seconds, and after the vacuumizing of the upper module is finished, water vapor the temperature is introduced into the upper module so as to carry out heating forming on a material, wherein the temperature of the water vapor is 140-180 DEG C and the pressure of the water vapor is 9-11MPa, the water vapor is discharged through the lower module, and the introducing time of the water vapor is controlled within 15-20 seconds, according to the production technology provided by the invention, high-temperature and high-pressure water vapor is adopted, the water vapor penetrating power is high, the heat transfer effect is good, a film is fully melted, soft and hard layers are firmly cohered, the soft layer sound insulation pad and the hard layer sound insulation pad manufactured by the technology provided by the invention have good sound insulation property.

Description

technical field [0001] The invention relates to a production process for making soft and hard layer sound insulation pads with high-temperature steam, and belongs to the technical field of production of automotive interior parts. Background technique [0002] The soft and hard layer sound insulation pad is installed inside the cockpit of the car, which plays the role of sound insulation, heat insulation, environmental protection and beautification, giving people a sense of comfort. The soft and hard layer sound insulation pad for the cockpit is made of composite processing of soft layer fiber felt, adhesive film and hard layer fiber felt. Based on the material composition of the soft and hard layer fiber mats, the traditional process often adopts the method of heating the softened soft and hard layer fiber mats in the oven first, and then feeding the softened soft and hard layer fiber mats into the mold to produce sound insulation mats by cold molding. There are a series of ...

AI Technical Summary

Problems solved by technology

[0003] 1. There are many processes, long drying time and low production efficiency;

[0004] 2. A lot of equipment is invested and the cost is high;

[0005] 3. During the film laying process, the heat dissipation of the soft and hard layers is too fast, so that the film cannot be completely melted, and the soft and hard layers are not firmly pasted, and it is easy to come off