CN101392432B - Method for producing melt-blown nonwoven down dual constituent thermal insulating interlining - Google Patents

Abstract

The invention relates to a method for forming dual-component heat-insulating wadding by combining molten-spraying nonwoven fabrics and down. Specifically, the method comprises the following steps: heating polymer resin slices into molten state, then extruding, measuring and distributing the resin slices evenly to a hole of a spinneret device, and then stretching the resin slices into superfine fiber by hot air. Then the down is adhered with polymer fiber which is treated with fiber-stretching and is still not cured so as to form a net after being distributed by loosening, velvet-supplying and velvet-filling , and then a receiver and a finishing reel wind the net into the wadding. The invention adds down material into the existing molten-spraying production process, which can improve the heat-insulating rate and rebound elasticity of the wadding and can improve the transverse and longitudinal tensile strength of the wadding.

Description

Make the method for melt-blown nonwoven down dual constituent thermal insulating interlining

Technical field

The present invention relates to a kind of preparation method who melts and sprays non-woven who contains eider down, belong to textile technology field.

Background technology

The preparation method of meltblown non-woven flocculus is that polymer is extruded by spinneret orifice under molten condition, and drawing-off becomes micro staple fiber under the effect of high speed thermal current, and fiber forms fiber mesh material, fibre fineness 1 μ m-5 μ m with the very fast cohesion net that flies to.Because meltblown non-woven flocculus has good spreadability, fibre web can be processed into fluffy shape and tensed state.The arrangement astaticism of fiber is good, and these structures and characteristic make and melt and spray non-woven and be suitable for very much aspects such as filtration, warming, cleaning.The fluoropolymer resin section is through hopper feeding extruder, heating back section becoming melt, by being assigned to melt in the spinnerets equably after measuring pump and the filtration, make each the spinneret orifice extrusion capacity unanimity that is arranged in straight line, the molten condition polymer filament that spinneret orifice is extruded is led thin elongation rapidly under the high bundle thermal current effect of both sides, form superfine fibre.

The existing non-woven flocculus that melts and sprays merely, because fiber is under the effect of high velocity air more than 200 ℃, drawing-off becomes ultra-fine short fiber, advantage is that thermal property is good, is better than cotton-wool and other fibrous non-woven.Weak point be the resilience of flocculus in use for some time or under the mutual extrusion situation, easily be compacted.Air gap in the flocculus structure is diminished, cause flattening, the insulation flocculus resilience is weakened, bulking intensity diminishes, and thermal property lowers.On the other hand at high temperature to form superfine fibre intensity not good for polymer, in tensile strength inferior to other fibre-forming polymers.

Summary of the invention

Purpose of the present invention is to overcome deficiency of the prior art, a kind of down fiber is provided and melts and sprays non-textile fiber to combine, and forms the preparation method of two component insulation flocculus.

The objective of the invention is to be achieved through the following technical solutions.

The present invention is a kind of method of making melt-blown nonwoven down dual constituent thermal insulating interlining.It is the preparation method that a kind of pair of component combined after preparing separately.Method is: earlier the fluoropolymer resin section is heated into molten condition, extrudes, measure through spinneret orifice, under the effect of hot blast, fibre is stretched into superfine fibre; Simultaneously with the eider down after the shredding through for behind the suede, down-filling machine, be bonded into net with superfine fibre still uncured after fine the stretching, after the rolling, promptly obtain double component molten and jetted non-woven flocculus.

The present invention adds the eider down material existing melting and spraying in the production process, can make flocculus improve warming rate, increase resilience, and improve flocculus in length and breadth to tensile strength.The present invention has kept melting and spraying the advantage of non-woven flocculus, in process of production, add down fiber, skeleton function by means of eider down, make that it is fluffy, and can effectively increase under the effect of pulling force in length and breadth, improve thermal property, solved and singlely melt and spray non-knitting and lack elasticity and fluffy problem after flocculus is compacted easily, and can promote warming rate comprehensively.That uses the inventive method manufacturing melts and sprays the non-woven flocculus, compares with the existing single non-woven flocculus that melts and sprays, and processes ready-made clothes, clothing back of the body class.Through pressurization and washing, the every performance of this product all is better than the single non-woven flocculus that melts and sprays and makes ready-made clothes, clothing behind, does not at first have a kind of too fat to move state; The 2nd, because eider down and resin fibre combine, do not have willow catkins flying in the air and occur, the lining of clothes, the clothing back of the body, lining material can freely be selected the material of good permeability, have solved the biggest problem in traditional down coat.

Description of drawings

Accompanying drawing is a process flow diagram of the present invention.

The specific embodiment

Referring to accompanying drawing, the invention provides a kind of pair of component recombinant preparation method together after preparing separately.The production technology of non-woven flocculus comprises the raw material feeding, and fusion metering and drawing-off spray silk melt and spray.The concrete preparation method of non-textile fiber is: melting plant is sent in the section of the fluoropolymer resin in the hopper, be heated into molten condition; Send into again in the extruder, extrude through spinneret orifice.The diameter of used spinneret orifice is 0.28mm, and the diameter range of extruding fiber is 0.5-5 μ m; The filament of extruding is under the effect of the hot blast that is heated by heater, and fibre is stretched into superfine fibre; The diameter range that the filament of extruding is processed to superfine fibre is 0.5-2.5 μ m.Send into spray silk machine through the measuring pump metering, spray the fusion short fiber to fiber spinneret by spinning head.Meanwhile, the production technology of eider down non-woven flocculus comprises raw material screening, shredding, supplies suede, fills suede and distribution.Its concrete preparation method is: eider down forms product to be processed nonpoisonous and tasteless, that nothing has animal tallow and residue after going to obstruct anti-tie anti-stab and destarch and handling.After selected, send in opener and the confession suede device, make it form floating state, under the certain negative pressure effect, suck down-filling machine, eider down in the down-filling machine casing with adjustable air-flow effect under, form the overall uniform willow catkins flying in the air, guiding distribution plate in distributor combines eider down with still uncured fusion short fiber in being same as the width straight line of above-mentioned fiber spinneret again, mix cooling and form unordered network polymers, receive through the receiving equipment drum type receiver, after the rolling, promptly obtain double component molten and jetted non-woven flocculus.

The eider down addition can be selected in the 10-45% scope of double component molten and jetted non-woven flocculus weight as required, and the eider down addition is preferably 33 ± 3%.

Described eider down refers to goose down, duck's down, chicken suede or all kinds of bird suede.

Described fluoropolymer resin section is meant polypropylene chip (pp), and molten refer to (flow) of its leading indicator is between 1000-1200g/10min.

Spinning pressure is 1.2mpa, and the injection air pressure when eider down and bunch fiber are bonding exceeds 0.03mpa than spinning pressure, and gas temperature is controlled at 210 ℃-240 ℃, can decide according to the performance of resin slicer.

When eider down and tow were bonding, melting and spraying non-woven wire vent direction and eider down injection direction was 20-40 degree angle.Preferred 35 degree angles.

The method of this product invention is to keep melting and spraying non-woven flocculus advantage in process of production, add down fiber, skeleton function by means of eider down, make that it is fluffy, and can effectively increase under the effect of pulling force in length and breadth, improve thermal property, solved and singlely melt and spray non-knitting and lack elasticity and fluffy problem after flocculus is compacted easily, and can promote warming rate comprehensively.

The research staff thinks in the experimentation that eider down and non-woven short fiber combine, if the eider down amount is little, flocculus bulking intensity and pulling force increase significantly; If under the eider down amount situation bigger than normal, the layering of bonding effect and flocculus is comparatively obvious.Evidence, addition are under 33 ± 3 situation, and the various aspects of performance optimum can reach effect of the present invention.

Through above analysis, melt-blown nonwoven down dual constituent thermal insulating interlining of the present invention is compared with traditional clothes with melting and spraying the non-woven flocculus, and the advantage of taking from two kinds of materials combines in the new material, is a kind of novel practical insulation flocculus that can promote.

Claims (7)

1. method of making melt-blown nonwoven down dual constituent thermal insulating interlining, be the preparation method that a kind of pair of component combined after preparing separately, wherein, the concrete preparation method of non-textile fiber is: melting plant is sent in the section of the fluoropolymer resin in the hopper, be heated into molten condition, send into again in the extruder, extrude through spinneret orifice; The filament of extruding is under the effect of the hot blast that is heated by heater, and fibre is stretched into superfine fibre, and the diameter range that the filament of extruding is processed to superfine fibre is 0.5-2.5 μ m; Send into spray silk machine through the measuring pump metering, spray the fusion short fiber to fiber spinneret by spinning head; This is with simultaneously, and the concrete preparation method of eider down non-woven flocculus is: eider down forms product to be processed nonpoisonous and tasteless, that nothing has animal tallow and residue after going to obstruct anti-tie anti-stab and destarch and handling; After selected, send into opener and, make it form floating state in the suede device, under suction function, suck down-filling machine; Eider down in the down-filling machine casing with adjustable air-flow effect under, form the overall uniform willow catkins flying in the air, guiding distribution plate in distributor combines eider down with still uncured fusion short fiber in being same as the width straight line of above-mentioned fiber spinneret again, mix cooling and form unordered network polymers, receive through the receiving equipment drum type receiver, after the rolling, promptly obtain double component molten and jetted non-woven flocculus; Above-mentioned eider down addition is the interior selection of the 10-45% scope of double component molten and jetted non-woven flocculus weight; Send into the fluoropolymer resin of melting plant and cut into slices the molten finger of its leading indicator between 1000-1200g/10min.

2. preparation method according to claim 1 is characterized in that: described eider down addition is 33 ± 3% of a non-woven flocculus weight.

3. preparation method according to claim 1 and 2 is characterized in that: eider down refers to goose down, duck's down, chicken suede or all kinds of bird suede.

4. preparation method according to claim 1 is characterized in that: described fluoropolymer resin section refers to polypropylene chip (pp).

5. preparation method according to claim 1 is characterized in that: spinning pressure is 1.2mpa, and the injection air pressure when eider down and bunch fiber are bonding exceeds 0.03mpa than spinning pressure, and gas temperature is controlled at 210 ° C-240 ℃.

6. preparation method according to claim 1 is characterized in that: when eider down and tow were bonding, melting and spraying non-woven wire vent direction and eider down injection direction was 20-40 degree angle.

7. preparation method according to claim 1 is characterized in that: used spinneret orifice, and its diameter is 0.28mm, the diameter range that the filament of extruding is processed to superfine fibre is 0.5-2.5 μ m.

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