CN101074543A

CN101074543A - Production of waterproof foaming substrate

Info

Publication number: CN101074543A
Application number: CN 200610079857
Authority: CN
Inventors: 周隆文
Original assignee: KAILI INDUSTRIAL Co Ltd
Current assignee: KAILI INDUSTRIAL Co Ltd
Priority date: 2006-05-16
Filing date: 2006-05-16
Publication date: 2007-11-21
Anticipated expiration: 2026-05-16
Also published as: CN100519924C

Abstract

This invention relates to one production process of waterproof foam base fabric, its process is as follows: prepare in advance base fabric composed by fabrics, non-woven, ultra-fine fiber or its analogues, foam the PU ethyl (commonly known as PU) by the foam equipment, perfuse on the surface to form the base fabric of PU foam layer of plastic with obturator cell, and then appropriately stick PU resin materials added with hygroscopic materials to the PU foam layer of plastic to form one layer, which make the synthetic skin be with the dual functions of waterproof and water vapor permeability.

Description

The manufacture method of Waterproof Breathable foamed substrate

Technical field

The invention relates to a kind of foamed substrate, more detailed it, be meant that especially a kind of foamed substrate of synthetic skin that makes has the manufacture method of waterproof effect.

Background technology

Existing artificial synthetic skin, roughly distinguish two kinds of wet type and dry types are arranged, the manufacture method of the synthetic skin of relevant wet type, normally with various raw materials and solvent splendid attire in one or several dipping tanks, afterwards, base cloth is imported in the dipping tank, make its impregnation material, base cloth is imported in the tank again, material (the being generally Foamex) gel of its surperficial impregnation is solidified, then, utilize electric heating drying equipment to carry out dried again, to form the base material of synthetic skin, at last, with the musculus cutaneus of making in addition (or epithelium), fit mutually with solid and base material, form artificial synthetic skin; In addition, the synthetic skin of this dry type is to adopt resin-coated method, with resin-coated on release liners, and process is dried, upward stick with paste processing, afterwards, it is fitted in the base material of drying the formation leatheret on the base cloth together again, at last, the musculus cutaneus that to make is in addition fitted mutually with solid and base material equally, forms artificial synthetic skin.

But no matter existing synthetic skin is wet type or dry type, all only depend merely on the musculus cutaneus that the surface forms and produce water-proof function,, be subjected to scratch easily or generation is broken because this musculus cutaneus is quite thin, therefore, when the musculus cutaneus scratch or when breaking, in case touch moisture, moisture promptly infiltrates the base material from scratch or rent easily, at this moment, more because the matrix structure that foamed resin is formed is a strip-like-shaped, water isolation effect weakness, make base material can produce water sorption, cause the synthetic moistening damage of skin.

Summary of the invention

The object of the invention provides a kind of manufacture method of Waterproof Breathable foamed substrate, be to prepare one in advance by base cloth that cloth, Nonwovens, superfine fibre or its analog constituted, after utilizing foaming machine that polyamine base Ethyl formate (being commonly called as PU) is suitably foamed, it is poured into the base material of the plastic foamed layer of the PU that forms a tool closed pore sexual cell on the base cloth surface, afterwards, the PU resin material that will be added with the moisture absorption material more suitably fits in the plastic foamed layer of PU and goes up and form a musculus cutaneus.

Manufacture method of the present invention, can make the synthetic skin of making, absorb the saturating wet effect of aqueous vapor except that utilizing musculus cutaneus to reach, also can have the characteristic that does not absorb water by closed pore formula bubble by base material, reach good waterproof effect, so that make synthetic skin can maintain well dried state, and can use according to purposes or the different positive and negatives of demand.

Description of drawings

Fig. 1 is the schematic flow sheet of manufacture method of the present invention;

Fig. 2 is the allocation plan of foaming machine of the present invention;

Fig. 3 is the shoot material top cross-sectional view of mixing arrangement of the present invention;

Fig. 4 is the shoot material side-looking generalized section of mixing arrangement of the present invention;

Fig. 5 is the synthetic skin partial cutaway schematic that the present invention makes.

[explanation of primary clustering conventional letter]

10 base cloths

The plastic foamed layer of 20PU 21 closed pore formula bubble

30 musculus cutaneus

40 material devices

41 charging baskets, 42 motors

The 44 quantitative pumpings of 43 agitators

45 charging baskets

50 mixing arrangements that shoot material

51 mixing head 52 mixing channels that shoot material

53 screw rods, 54 feeders

55 joints

The specific embodiment

See also Fig. 1, the manufacture method of a kind of Waterproof Breathable foamed substrate of the present invention consists predominantly of the following step:

Prepare a base cloth 10, this base cloth 10 is made of cloth, Nonwovens, superfine fibre or its analog.

Utilize foaming machine, extremely shown in Figure 4 as Fig. 2, will be poured on base cloth 10 surfaces after polyamine base Ethyl formate (the being commonly called as PU) foaming, with the base material of the plastic foamed layer 20 of the PU that forms a tool closed pore sexual cell 21; Wherein, the polyamine base Ethyl formate of present embodiment is to adopt mechanical foaming, this foaming machine includes a material device 40 and a mixing arrangement 50 that shoots material, it is the isocyanates polymer (being called for short the PU resin) that will contain NCO, contain in the hydroxy compound of OH and three charging baskets 41 that colorant fills in a material device 41 respectively, and utilize each charging basket 41 top to establish a motor 42, motor 42 extends an agitator 43 to charging basket 41 inside, and establish a certain amount of pumping 44 in charging basket 41 bottoms, make the liquid material of charging basket 41 inside can pass through to stir by agitator 43, again by doing quantitatively output by quantitative pumping 44, and material device 40 can establish in addition one be filled with the foaming catalyst charging basket 45, for promoting foaming effect, such as nitrogen, gas, water or physical foaming agent etc.; This mixing arrangement 50 that shoots material has the mixing head 51 that shoots material, its central authorities are provided with a mixing channel 52 longitudinally, but be equiped with the screw rod 53 of a start in it, its all side is respectively equipped with three feeders 54 and a joint 55, these feeders 54 be respectively be filled with the isocyanates polymer, the barrel 41 of hydroxy compound and colorant is connected, 55 of this joints are connected with the charging basket 45 that is filled with the foaming catalyst, after making these liquid materials and blowing agent inject mixing channel 52 from feeder 54 and joint 55, can be by stirring by the mechanical type rotation of screw rod 53, make the border that produces moment reaction and foaming effect between liquid material and blowing agent, air or carbon dioxide are blown to be involved in wherein, see also Fig. 5, so that make its vertical infusate flow after base cloth 10 sclerosis, can form the foaming body of tool closure bubble 21.

The PU resin material that will be added with the moisture absorption material more suitably fits on the plastic foamed layer 20 of PU, to form a musculus cutaneus 30; Wherein, the moisture absorption material of present embodiment is to adopt calcium chloride, and this PU resin material can not fitted under the state of sclerosis in half-reaction fully mutually with the plastic foamed layer 20 of the PU that forms base material, or after the two complete reaction and sclerosis, fits mutually with solid.

What need special instruction is, the manufacture method of Waterproof Breathable foamed substrate of the present invention, it mainly is the base material that on a base cloth 10, forms the plastic foamed layer 20 of PU of a tool closed pore formula bubble 21, and on base material, form a musculus cutaneus 30 that is added with the moisture absorption material, by this, can make musculus cutaneus 30 must produce saturating wet effect by the moisture absorption material that adds, that is, but this musculus cutaneus 30 removes isolated water especially, also can absorb aqueous vapor at leisure, to keep the drying of musculus cutaneus 30; In addition, when musculus cutaneus 30 suffers scratch accidentally or breaks, its moisture content that infiltrates via scratch or rent also can be by the obstruct by the plastic foamed layer of PU 20 each closed pore formula bubble 21, moisture content can't be continued toward interior infiltration, and reach the function of waterproof, so the manufacture method of Waterproof Breathable foamed substrate of the present invention can make the synthetic skin of making have waterproof and saturating wet dual-use function concurrently.

Moreover, the foamed substrate that the present invention is made, can use according to different purposes or demand positive and negative, that is, the producer or user can make the goods extexine with the musculus cutaneus 30 of foamed substrate, so, extraneous moisture are effectively blocked by the musculus cutaneus 30 of extexine, and can be toward interior infiltration, and can bring into play the effect that wets; In other words, the musculus cutaneus 30 of this foamed substrate also can be made the goods endosexine, and base cloth 10 is then as the extexine of foamed substrate, and this is to can be applicable to the foamed substrate extexine can not contact the anxiety of extraneous moisture the time, so can reach flexible Application.

In sum, the present invention is real in like product its splendid progressive practicality, all over looking into both at home and abroad about the technical data of this class formation, also finds no identical construction in the document and exists formerly simultaneously, be with, the present invention has possessed novel patent requirement in fact.

The above only is of the present invention one preferable possible embodiments, changes so use the equivalent structure that specification of the present invention and claim do such as, ought to be included in the claim of the present invention.

Claims

1, a kind of manufacture method of Waterproof Breathable foamed substrate is characterized in that comprising the following step:

Prepare a base cloth, it is made of cloth, Nonwovens, superfine fibre or its analog;

Utilize foaming machine, with being poured on the base cloth surface after the foaming of polyamine base Ethyl formate, with the base material of the plastic foamed layer of the PU that forms a tool closed pore formula bubble;

The PU resin material that will be added with the moisture absorption material more suitably fits on the plastic foamed layer of PU, to form a musculus cutaneus person.

2, the manufacture method of Waterproof Breathable foamed substrate as claimed in claim 1 is characterized in that, the plastic foamed layer of the PU of described this tool closed pore formula bubble is to utilize foaming machine to carry out mechanical foaming by polyamine base Ethyl formate to be formed.

3, the manufacture method of Waterproof Breathable foamed substrate as claimed in claim 1, it is characterized in that, described this foaming machine includes a material device and a mixing arrangement that shoots material, this material device has three charging baskets, filling contains the isocyanates polymer of NCO respectively, the hydroxy compound and the colorant that contain OH, and each charging basket top is provided with a motor, this motor extends an agitator to charging basket inside, and be provided with a certain amount of pumping in the charging basket bottom, with the charging basket interior liquid material dosing output after stirring, in addition this material device more is provided with a charging basket that is filled with the foaming catalyst, this mixing arrangement that shoots material then has the mixing head that shoots material, its central authorities are provided with a mixing channel longitudinally, be equiped with the screw rod of a start in this mixing channel, its all side is respectively equipped with three feeders and a joint, this feeder respectively be filled with the isocyanates polymer, the barrel of hydroxy compound and colorant is connected, this joint then is connected with the charging basket that is filled with the foaming catalyst, make this liquid material and foaming catalyst inject mixing channel from feeder and joint, again by machinery rotation start by screw rod, air or carbon dioxide blown to be involved in wherein carry out mechanical foaming, and hang down infusate flow on base cloth.

4, the manufacture method of Waterproof Breathable foamed substrate as claimed in claim 3 is characterized in that, described this foaming catalyst is nitrogen, gas, water or physical foaming agent.

5, the manufacture method of Waterproof Breathable foamed substrate as claimed in claim 1 is characterized in that, described this moisture absorption material is a calcium chloride.