摘要：
The subject of the invention is to provide a double-sided thermoplastic mattress in the form of a sleeping pad comprising at least one mattress layer made of thermoplastic fibres, characterised in that its resilience is between 40 and 70%, its permeability to water is at least 90% and each layer has a density between 30 and 190 kg/ m3. Another object of the invention is to provide a method for the continuous manufacture, and a device for producing a thermoplastic fibre mattress layer for such a mattress.
权利要求：
Patent claims A double-sided thermoplastic mattress in the form of a sleeping pad comprising at least one mattress layer made of thermoplastic fibres, characterised in that its resilience is between 40 and 70%, its permeability to water is at least 90% and each layer has a density between 30 and 190 kg/m3. The mattress according to claim 1, characterised in that each fibre of the mattress layer is coated with silver ions. The mattress according to claim 1 or 2, characterised in that its permeability to water is at least 95%. The mattress according to any of the preceding claims 1 to 3, characterised in that it comprises one to three mattress layers. The mattress according to any of the preceding claims 1 to 4, characterised in that after passing through the mattress, the air velocity is at least 5 km/h, with the input velocity of 18.72 km/h. The mattress according to any of the preceding claims 1 to 5, characterised in that its total drying time is a maximum of 24 hours after the mattress has been shaken out for 10 seconds, and it only needs 1 hour to dry in 80%. The mattress according to any of the preceding claims 1 to 6, characterised in that its heat loss rate is at least 30% in 10 minutes, advantageously 50%. The mattress according to any of the preceding claims 1 to 7, characterised in that it absorbs less than 38% of water. A method for the continuous manufacture of a thermoplastic fibre mattress layer for a mattress according to any of the preceding claims 1 to 8, characterized in that it comprises the following steps: a) thermoplastic granules are supplied to raw material infeed unit (3) of the extruder; b) the granules are heated by heaters (5) of the heating zones (5) of auger (4) of the extruder; c) the fibres are extruded through a plurality of downward-facing manufacturing nozzles (8) of the extruder (7);
d) As an option, silver ions (9) are dispersed on the surface of the extruded thermoplastic fibres when they exit manufacturing nozzles (8) through at least two opposing lateral dispersing nozzles (10) installed on the cooling tank housing (12) perpendicularly to manufacturing nozzles (8) below their mouth; e) the fibres are heated in the outer vertical heaters (11) zone at a temperature of 150°C- 285°C; f) the thermoplastic fibres are transferred to cooling tank (12); g) the fibre conjugate is moulded to take specific shape on moulding rollers (13) of cooling tank (12) for 45 sec. to 5 minutes and the moulded conjugate is fed successively onto infeed rollers (14) and infeed-receiving belt (15) connecting the cooling tank (12) with post-heating furnace; h) the moulded material is transferred to the heating furnace via the infeed-receiving belt (15); i) the moulded conjugate is subjected to a temperature of 120-350 °C in the heating furnace for 45 sec. to 5 minutes; j) the moulded conjugate is received and trimmed at the furnace outlet by infeed-receiving unit (19), which is equipped with edge knives (21). The method according to claim 9, characterised in that in step e) the heating of the fibres in the outer vertical heaters zone (11) is carried out at a temperature of 230-250 °C, advantageously at 230 °C. The method according to any of the preceding claims 9 to 10, characterised in that in step i) the moulded conjugate is subjected to a temperature of 200-288 °C, advantageously 240 °C. The method according to any of the preceding claims 9 to 11 , characterised in that it comprises step i') at which, once it exits the furnace, the moulded conjugate is subjected to final heating from terminal hot air nozzles (28) at a temperature of 150 to 350 °C, advantageously at 200-290 °C. A device for producing a thermoplastic fibre mattress layer of a mattress according to any of the preceding claims 1 to 7, comprising an extruder unit connected by gearbox to a motor and provided with an auger equipped with heating zones, which is connected to a multi-nozzle extruder equipped with built-in heaters; a cooling tank located below the manufacturing nozzles of the extruder and the infeed-receiving unit, characterised in that at least two opposing lateral
dispersing nozzles (10) are installed on the housing of the cooling tank (12), below which at least two opposing outer vertical heaters (11) are mounted, the spacing of the said dispersing nozzles (10) and outer vertical heaters (11) being wider than the spacing of the manufacturing nozzles (8) of the extruder (7); the cooling tank (12) is provided with moulding rollers (13), infeed rollers (14) and with an infeed-receiving belt (15) connecting said cooling tank with the post-heating furnace, behind which infeed-receiving unit (19) is situated. The device according to claim 13, characterised in that the auger unit (4) is equipped with seven heating zones (5), each of which is equipped with a cooling fan. The device according to claim 13 or 14, characterised in that the diameter of each of the plurality of the dispersing nozzles (10) is 0.6 mm to 1.5 mm. The device according to any of the preceding claims 13 to 14, characterised in that the diameter of a part of the dispersing nozzles (10) is 0.7 mm while the diameter of the remaining dispersing nozzles (10) is greater than 0.7 mm, advantageously 1.00 mm. The device according to any of the preceding claims 13 to 16, characterized in that the terminal hot air nozzles (28) are arranged at the outlet of the post-heating furnace.