US2741108A

US2741108A - Flame resistant fabric

Info

Publication number: US2741108A
Application number: US247545A
Authority: US
Inventors: Rogosin Lionel
Original assignee: Beaunit Mills Inc
Current assignee: Beaunit Mills Inc
Priority date: 1951-09-20
Filing date: 1951-09-20
Publication date: 1956-04-10
Anticipated expiration: 1973-04-10

Description

April 10, 1956 1.. Roeosm ,7

FLAME RESISTANT FABRIC Filed Sept. 20, 1951 I NVENT OR Z [om 1 22060.51

BY W .1. 4%

ATTORNEY United States FLAME RESISTANT FABRHJ Lionel Rogosin, Weehawlren, la. 5., assignor to Beaunit Mills, Incorporated, New York, N. 51., a corporation of New York Application September 2a, 1951, Serial e. 247,545

Claims. er. 66-494) This invention relates to novel flame resistant Orlon fabrics. More particularly, the invention relates to a novel Orlon brushed fabric the flammability of which has been greatly reduced by including in the makeup of the fabric a substantial percentage of saran yarn so that the resulting mixture of saran and Orion yarns in the finished fabric confers a relatively high degree of flame resistance upon the finished fabric.

One of the principal objects of the present invention is to provide a new and improved Orlon brushed fabric in which the flammability of the fabric has been greatly reduced by the feature of including in the yarn a substantial percentage of a yarn of relatively low flammability, the presence of which in combination with the Orlon yarn imparts a satisfactory degree of flame resistance to the finished fabric.

The manner in which this and other objects and features of the invention are attained will appear more fully from the follow ng description thereof, in which reference is made to typical and preferred procedures in order to indicate more fully the nature of the invention, but without intending to limit the invention thereby.

Referring to the drawing there are shown four views of brushed fabrics illustrating embodiments of this invention.

Fig. l is a plan view of a brushed knitted fabric;

Fig. 2 is a side elevation of the brushed knitted fabric shown in Fig. 1;

Fig. 3 is a plan view of a brushed woven fabric; and

Fig. 4 is a side elevation view of the brushed woven fabric shown in Fig. 3.

Orlon brushed fabrics are already known to the art, and for certain uses are known to be very desirable. However, for certain other uses where it is necessary to provide fabrics which are relatively flame resistant such as for components of clothing, blankets, etc., for military and civilian personnel where there may be substantia risk from fire hazards, the Orion brushed fabric is unsuitable since it is very highly inflammable. However, since it is otherwise highly desirable for these and other uses, considerable effort has been expended in an effort to confer the necessary degree of flame resistance upon such fabrics. While a great deal of research has been carried out on the flameproofing of fabrics in general, much of this work has taken the direction of treating fabrics and/ or the yarns of which the fabrics are composed with chemical agents which are designed to confer the desired flameproofing properties thereon; for example, see A. C. S. Monograph No. 104 entitled Flameproofing Textile Fabrics by Robert W. Little, Reinhold Publishing Corporation, 1947. Such procedures, while satisfactory in many cases, are frequently undesirable in that they ordinarily involve a considerable degree of add-on of one or more chemical reagents, and this generally alters the hand or other desirable properties of the base fabric in such manner as to detract from its usefulness.

According to the present invention, it has been discovered that if an Orlon brushed fabric is made up in 2,741,108 Patented Apr. 10, 1956 ice yarn. It is believed that the reason why saran is capable 5 of imparting flame resistance to this brushed fabric is because saran in burning, because of its composition,

gives off vapors which tend to extinguished not only its wn blaze but that of adjacent inflammable yarns and fibers. Moreover, since the desired flame resistance has been built in, so to speak, and does not involve the addition to the fabric of chemical flameproofing agents according to flameproofing methods previously known per se in the art, the hand and other desirable characteristics of the finished fabric are not adversely affected as is frequently the case when using chemical flameprooflng agents.

In order to indicate still more fully the nature of the present invention the following example of typical procedure is set forth, it being understood that this description 7 is presentedby way of illustration only and not as limiting the scope of the invention.

Example for the construction of the back'of the fabric.

A backing bur blocked onein and one outwas used,

for laying in yarn on the face of the fabric Without distorting the back in any manner.

Percent 20/1 K. P. 27.7 750 denier saran 40.8 ZOO-denier Orlon 31.5

No dyestufl was applied to the fabric, it being merely boiled off and rinsed. No finish or fire retardants of any kind were applied. The fabric was dried on a vertical pipe drier. The fabric was in circular condition and was then split, after which it was napped six times on a napping machine in conventional manner on a regular rayon setting, and then tentered to 56". This produced a soft pile effect on the face yarn of the fabric.

The saran-Orlon brushed fabric that was produced in the manner described above possessed a soft hand and, more importantly, had acquired a substantial flame resistance in comparison with an otherwise identical Orlon brushed fabric containing no saran yarn.

It is to be understood that the novel brushed fabric prepared as described above was made entirely by conventional methods using conventional machines well known in the art.

While the invention has been described more particularly in conjunction with a novel saran-Orlon brushed fabric, it will be understood that saran yarn may be incorporated in other types of brushed fabrics which normally are highly inflammable with similar desirable results, one instance being a saran viscose rayon brushed fabric prepared exactly as described above but with the substitution of viscose rayon yarn for Orlon yarn. The fabrics may be woven instead of knitted.

It will be appreciated that the saran yarn may be employed in the fabric in varying amounts relative to the Orlon or other relatively inflammable yarn withou departing from the spirit of the invention, depending upon the degree of-fiame resistance desiredin-the-= finished fabric.

Although the chemical nature of Orion and Satan 7 yarns'is well known-to thoseskilledin'the art, 'it'rnay be" Weil :to-ppint out that =sararr is a copolymer of Vinylidene" V chloride and-vinyl chloride in Whichthe tormer'predomi nates -sec -Fieser and" Fieser; Organic Chemistry; sec- 0nd edition, 1950, page 951, Abernethy; Patent-No.

2,542,973 and J ones'Patent-No: 2,543' 027. Orlon yarn therefore -to "be-understood" that the example *cit'ed-and-'the'--' V particular-proportions and details-set forthabove/ arein tended to be illustrativeonly andare not intended'to lirnit the seopeoftheinvention.

Wliatisclaimedis:

1, A flame resistant brushed fabric comprising a back-- ing prepared from normally inflammable yarn, afacir'ig forsaidfabric: capable-of receiving anap, 'saidfacing- -be* ing constructedffrom at leasttwo diiferent yarns; at 'least' one of*which is higmy-infiammable in its brushed condition and the other of which comprises 'sarang saidsaran 2. A fabrie-as'claimed-in claim=l wherein-onecf' 'the yarns employed in constructingthe facing; comprises Or-lon;-"-

3. A fabric as rayon? 4; A flame eresistant brushed woven fabric-comprising abaeking prepared fiomnormally infiammable yarn; a

r claimed inclaim'l wherein-one ofth'e yarns employed in constructing thefacingcomprises facing for said fabric capable of receiving a nap, said facing-constructed frorrr'atleast- *twodifiercntyarns; at least one of which is highly inflammable in its brushed condition and the other of which comprises saran, said Saran being present in substantial amounts determined by the infiammability of the other yarn components com-- prising said facing, but not:lessthan required to impart flame resistance. to saidfabric.

5. A fiame resistant'brushedknittedfabriccomprising a knit'cotton'backing having attached thereto a;facing;, capable of receiving a nap, said .facing being-constructed from a combination of Orion and saran yarns-,zwith at least .oneuend 'of saranyarnbeing ernployed per several ends ofsaid orlon yarn, with the number of ends of V saran being no greater than requiredltovimpart a substantial degree of flame resistance to said fabric.

References Cited in the file of this patent UNITEDT STATESV PATENTS;

599,438; Bell Feb;-,.22, .1898' 668;.793; Bradley: Feb; 26,- v1901: 2,019,258: Holmes r.Oct; 29, 1935 2,156,455 Kleine .r May"2,t1939.:. 2,239,457 Gibbons Apr." 22, 1941; 2,266,163l Francis: Dec. .16; 1941 25219206 7 Randall Apr. v7, 1942 a 2,312,089; Gobeill Feb;:23 :1943;- 2,313,058; Francist Mar;19,.1943;" 2,353,090.- Shelmire et al July 4, 19.44; 2354!,4352 Stedrnan -July 25, 1944 2,536,1635 Feild et a1. Jana '2, 1951. 2,539,301 Foster Jani 23; 1951: 2,5 85 ,212 r OTHER REFERENCES- Shnnamand'Sherman: TlieNeW Fibers, l946'(pp.

Johns; -D'ec: .1 8; 188 3'5.

Backer. Feb.-:12,; 1952

Claims

1. A FLAME RESISTANT BRUSHED FABRIC COMPRISING A BACKING PREPARED FROM NORMALLY INFLAMMABLE YARN, A FACING FOR SAID FABRIC CAPABLE OF RECEIVING A NAP, SAID FACING BEING CONSTRUCTED FROM AT LEAST TWO DIFFERENT YARNS, AT LEAST ONE OF WHICH IS HIGHLY INFLAMMABLE IN ITS BRUSHED CONDITION AND THE OTHER OF WHICH COMPRISES SARAN, SAID SARAN BEING PRESENT IN SUBSTANTIAL AMOUNTS DETERMINED BY THE INFLAMMABILITY OF THE OTHER YARN COMPONENTS COMPRISING SAID FACING, BUT NOT LESS THAN REQUIRED TO IMPART FLAME RESISTANCE TO SAID FABRIC.