# US 5,346,756 A · Nonwoven textile material from blends of propylene polymer material and olefin polymer compositions

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- Number: US 5,346,756 A
- Document ID: US5346756A
- Status: Granted
- Kind: A
- Application number: 07/968,766
- Filed: 1992-10-30
- Granted: 1994-09-13
- Earliest claimed: 1992-10-30
- Assignees: Himont Incorporated
- Inventors: Kumar Ogale; Michael E. Starsinic
- Web page: https://patentgrep.com/patent/US5346756A

## CPC

- D04H 1/42: characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D01F 6/46: of polyolefins
- Y10T 428/2915: including textile, cloth or fabric
- Y10T 442/697: Containing at least two chemically different strand or fiber materials
- D04H: MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL (weaving D03; knitting D04B; braiding D04C; net-making D04G; sewing D05B; tufting D05C; finishing non-woven fabrics D06); FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING {; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION}(non-woven fabrics having an intermediate or external layer of a different kind, e.g. of woven fabric, B32B)
- D01F: CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

Disclosed is a nonwoven textile material comprising fibers of a propylene polymer material blended with an olefin polymer material.

## Claims

### Claim 1

A nonwoven textile material comprising fibers obtained from a blend of (A) 5 to 95% of a propylene polymer material selected from the group consisting of a crystalline propylene homopolymer having an isotactic index of greater than 90 and a copolymer of propylene and ethylene having an isotactic index of greater than 85 and an ethylene content of less than 10%, and (B) 95 to 5% of an olefin polymer material selected from the group consisting of:
(1) a random propylene terpolymer consisting essentially of:
(a) from about 85 to 96% propylene,
(b) from about 1.5 to 5% ethylene, and
(c) from about 2.5 to 10% C.sub.4-8 alpha-olefins;
(2) a propylene polymer composition consisting essentially of:
(a) 30 to 65% of a copolymer of propylene with a C.sub.4-8 alpha-olefin containing from 80 to 98% propylene, and
(b) 35 to 70% of a co- or terpolymer of propylene with ethylene and, optionally, a C.sub.4-8 alpha-olefin;
(3) a propylene polymer composition consisting essentially of:
(a) 30 to 60% of linear low density polyethylene, and
(b) from 40 to 70% of one or more crystalline copolymers of propylene with one or more comonomers selected from ethylene or C.sub.4-8 alpha-olefins, or combinations thereof; and
(4) a propylene polymer composition consisting essentially of:
(a) from 10 to 50% of a propylene polymer having an isotactic index of greater than 80, or a copolymer of propylene with ethylene or a C.sub.4 -C.sub.8 alpha-olefin or combinations thereof, containing over 80% propylene and having an isotactic index greater than 80,
(b) from about 5 to 20 parts of a semi-crystalline copolymer fraction, which copolymer is insoluble in xylene at room or ambient temperature, and
(c) from 40 to 80% of a copolymer fraction of ethylene with propylene or a C.sub.4 -C.sub.8 alpha-olefin, and optionally with minor amounts of a diene, said copolymer fraction containing less than 40% ethylene or a C.sub.4 -C.sub.8 alpha-olefin or combinations thereof, being soluble in xylene at room temperature and having an intrinsic viscosity from 1.5 to 4 dl/g, wherein the total of the (b) and (c) fractions, based on the total olefin polymer composition, being from about 50% to 90%, and the weight ratio of (b)/(c) being less than 0.4.

### Claim 2 (depends on 1)

The nonwoven material of claim 1, wherein said fibers have a denier of less than 10.

### Claim 3 (depends on 2)

The nonwoven material of claim 2, wherein the olefin polymer material (B) is (1).

### Claim 4 (depends on 3)

The nonwoven material of claim 3, wherein (B)(1) is present in an amount of from 10 to 70%.

### Claim 5 (depends on 2)

The nonwoven material of claim 2, wherein the olefin polymer material (B) is (2).

### Claim 6 (depends on 5)

The nonwoven material of claim 5, wherein (B)(2) is present in an amount of from 10 to 70%.

### Claim 7 (depends on 2)

The nonwoven material of claim 2, wherein said olefin polymer material (B) is (3).

### Claim 8 (depends on 7)

The nonwoven material of claim 7, wherein (B)(3) is present in the amount of from 10 to 70%.

### Claim 9 (depends on 2)

The nonwoven material of claim 2, wherein said olefin polymer material (B) is (4).

### Claim 10 (depends on 9)

The nonwoven material of claim 9, wherein (B)(4) present in an amount of from 10 to 70%.