US1255818A

US1255818A - Reinforced paper fabric.

Info

Publication number: US1255818A
Authority: US
Inventors: Patrick Tracy Jackson Jr
Original assignee: PAPER PRODUCTS MACHINE Co
Current assignee: PAPER PRODUCTS MACHINE Co
Publication date: 1918-02-05
Anticipated expiration: 1935-02-05

Description

P. T. JACKSON, JR.

' REINFORCED PAPER FABRIC.

APPLICATION FILED SEPT. 22. 1916.

i; T" 1H1 i u! M 8/ V v/v TOR ATTORNEY rcr Manson, in, or trainer, naaeacnusnrrs, nssranoa re rarnn EACH'USETTE.

REINFORCED PAPER FABRIC.

Specification of Letters latent.

Patented Feb. 5, ilfitd.

@rigtnel application filed June 2t, 1918, Serial Ito. 106,504. mvtded and this application filed septernber 83,

1918. terial Ito. lancer.

class have been reinforced by securin to the surface thereof threads or cords w ich have been previously spun or twisted into a continuous filament, and such continuous threads or cords have been laid either transversely or transversely and longitudinally upon the surface of the fabric to be reinfor.

In a prior application, filed by applicant,

Serial No. 106,504, filed June 28, 1916, a machine for reinforcing paper fabrics or the like by adhesivel securing thereto uns un v and untwisted fi ers in substantiallyt air nlatnral condition, was described, as well, a, as the-fabric which resulted from the o eration of the machine. The present app ication is a division of the said prior application, and is directed to the fabric itself.

The aim and purpose of the present invention, therefore, is a paper fabric for use as a cover, wrapper, or container which is reinforced by a series of unspun fibers in sub stantially their natural condition, secured to the fabric with the lengthwise dimension of the unspun fiber extending transversel thereof. In some cases it may be desire is that the fabric be further reinforced by similar unspun fibers extending in substantially parallel relation longitudinally of the fabric, and the invention further contemplates, therefore, such transverse and longitudinal reinforcement of the fabric by the unspunfibersarran d in their respective transverse and long'itu 'nal direcions generally parallel to each other.

The individua fibers will ordinarily be of less length than the transverse ensions of the paper strip or fabric to which they are secured, and an important feature of the present invention, therefore, consists in adhesively securing to the fabric, the series of unspun fibers in substantially their natural state with the adjacent ends of the fibers between the side edge portions of the fabric, when the individual fibers are of less length than the width of the fabric in overlyin relation.

The a hesive used for securing the unspun fibers in the described relation may be of any appropriate character, but for some purposes a water-proof esive is found especially fitted for this purpose. in order that the transversely extending or trans versely and longitudinally entendin unspun fibers may be rotected, it is desirable in some instances 0 the invention to secure the unspun fibers in their described relation between two plies or paper fabrics.

In the drawings Figure 1 is a plan view show a strip of paper or like fabric having thesively secured thereto a series of unspun fibers in substantially their natural condition, the ends of the unspun fibers where the fibers are of less length than the widthof the fabric being in overlappin relation;

Fig. 2 is a view snrni ar to that of Fig. l, with the addition of the longitudinally-entending unspun fibers adhesively secured to the surface of the fabric;

Fig. 3 represents a iece of reinforced fabric comprising two p ies of paper having the transversely-arranged unspun fibers secured between them: and

Fig. 4 is a view similar to that of Fig. 3,

with the fibers extending both transversely a web or strip of paper or other fabric to be reinforced or strengthened by the appli- (ill till

cation thereto of unspun fibers to form a tough and not easily torn fabric that may be safely emplo ed as a wrapper, cover, or container for substances. The unspun fibers may be any of those now well mown, either animal or vegetable, but preferably the latter, such, for instance, as flan, sisal hemp, cotton, waste, jute, and the like. The fiber is first prepared in the usual manner ac cording to" the character of fiber eniloyed,

which has the efiect of laying the 11-. in

- a general parallel relation, the word 1parallel being herein used in a general t ough not strict sense, but since the machines and process for preparing fiber are well known to those skilled in the art and the invention does not relate to either, a detailed description of these machines and processes is unplied to the paper just prior to the time the unspun fibers are placed thereon. In some cases, the unspun fibers may be a plied to the paper fabric as it is supplie from a paper-making machine, or. the paper may be supplied from a suitable roll.

When the length of the individual fibers is less than the width of the web or stri of fabric to be reinforced by them, the en portions of the transversely extending fibers as at 3, Fig. 1. overlap and the overlapping ends of the fibers in different portions of the paper fabric are out of line with each other longitudinally of the fabric, so that no line of weakness is formed in the longitudinaldirection of the fabric.

In Fig. 2, which represents the fabric described with reference to Fig. 1, plus the longitudinally-extending series of unspun fibers, the longitudinal fibers 4 likewise preferably have their ends overlapping, as at 5, Fig. 2, and either overlie or underlie the transversely disposed series of unspun fibers.

As hereinbefore noted, it may sometimes be desirable to protect the reinforcing fibers on account of their delicate nature, and to this end the transversely-extending fibers may be secured between the two plies of fabric as represented in Fig.3, wherein 1 indicates one of the inclos'ing plies similar to that of Fig. 1, andi 'fi indicates the overlying ply or fabric which is adhesively se cured to the under ply to protect the trans versely-extending fibers by a suitable ad hesive, preferably water-proof in character. 1

-I'n Fig. 4, the unspun fibers extending in substantially parallel relation both.longitudinally and transversely of the fabrics, are indicated as inclosed between two plies which are secured together substantially as described, for the construction indicated in Fig. 3.

The fabric produced by the adhesive appli'cation to the surface thereof of a series of transversely-extending unspun fibers, affords an excellent covering or wrapping material wherein strength and'toughness is desirable, and at the same time, does not produce on the surface of the fabric the ribbed and unsightly grooved efiect always apparent when the reinforcin element-is formed of spun and twiste threads or cords. Inasmuch, also, asthe unspun fibers when of the relatively short length have their adjacent ends overlapping and the strengthening unspun fibers secured thereto with their longitudinal dimension extending transversely of the fabric in general parallel relation, the ends of adjacent unspun fibers extending past each other transversely of the paper strip to prevent lines of weakness longitudinally of the fabric.

2. A new article of manufacture consisting of a paper strip having a series of unspun fibers adhesively secured to the sun face of the paper strip in parallel relation extending transversely thereof, and a second series of unspun fibers adhesively secured to the surface of'the paper strip in parallel relation longitudinally thereof.

3. As a new article of manufacture, the improved fabric consisting of a paper stn unspun fibers arranged in series and exten ing transversely of the strip with the adjacent ends of separate fibers overlapping, an adhesive for securing the unspun fibers upon the surface of the paper strip, and a second strip of paper overlying the unspun fibers and inclosing'said unspun fibers between the strips.

4. A new article of manufacture consisting of a paper strip having a series of unspun fibers adhesively secured to the surface of the paper strip in parallel relat on extending transversely thereof, a second series of unspun fibers adhesively secured to the surface of the paper strip in parallel relation longitudinally thereof, anda second strip of paper overlying the unspun fibers and inclosing said fibers between the strips.

5. As an article of manufacture, a reinforced or strengthened paper fabric, comprising a paper strip, a series of unspun fibers the lengthwise dimension of which extend transversely of the paper strip, the ends of transversely extending unspun fibers overlapping cross-wise of the paper strip between the edges thereof and avoiding lines of weakness longitudinally of the paweenie per strip, and a Wete -proof edhwive for securing the reinforcing fibers to the surface of the paperstrip.

6. As an article of manufacture, a rein 5 forced or strengthened paper fabric, comprising a paper strip, a series of unspun fibers the lengthwise dimension of which en tend transversely of the paper strip, not

hesiv'eiy secured thereto, the ends of traineverseiy extending unspun fibers being disposed out of line longitudinally of the peper strip to evoioi lines of weelmess longitudinaily of the paper strip.

In testimony whereof, I have signed. my name to this specification.

PATRICK TRACE JAGK'EQN, In.