Claims
- 1. An integrated split fiber article comprising a fine network structure of split fibers obtained from a composite synthetic resin film of three layer structure having a polypropylene layer and a polyethylene layer on either surface of the polypropylene layer, wherein said polypropylene layer comprises a mixture of 70 to 95% by weight of a polypropylene having a melt flow rate of 0.5 to 10 grams/10 minutes and 30 to 5% by weight of a polyethylene having a density of 0.93 to 0.96 g/cm.sup.3 and said polyethylene layer comprises a polyethylene having a density of 0.93 to 0.96 g/cm.sup.3 and a melt flow rate of at least 13 grams/10 minutes.
- 2. An integrated split fiber article according to claim 1 obtained from a mixture of said split fibers and a plant fibrous material.
- 3. An integrated split fiber article according to claim 1 further comprising at least one additive selected from the group consisting of fibrous material other than plant fibrous material and water absorbing polymers.
- 4. An integrated split fiber article according to claim 2 further comprising at least one additive selected from the group consisting of fibrous materials other than plant fibrous material and water absorbing polymers.
- 5. An integrated split fiber article comprising a sheet of a fine network structure of split fibers, said split fibers consisting essentially of a composite synthetic resin film of three layer structure having a polypropylene layer and a polyethylene layer on each surface of the polypropylene layer, wherein said polypropylene layer comprises a mixture of 70 to 95% by weight of polypropylene having a melt flow rate of 0.5 to 10 grams/10 minutes and 30 to 5% by weight of polyethylene having a density of 0.93 to 0.96 g/cm.sup.3 and said polyethylene layer comprises polyethylene having a density of 0.93 to 0.96 g/cm.sup.3 and a melt flow rate of at least 13 grams/10 minutes.
- 6. An integrated split fiber article according to claim 5 containing a mixture of said split fibers and a plant fibrous material.
- 7. An integrated split fiber article according to claim 5 containing at least one additive selected from the group consisting of fibrous materials other than plant fibrous material and water absorbing polymers.
- 8. An integrated split fiber article according to claim 6 further containing at least one additive selected from the group consisting of fibrous materials other than plant fibrous material and water absorbing polymers.
- 9. A method for preparing split fibers, comprising the steps of:
- slitting and stretching a three layer composite synthetic resin film structure having a polypropylene layer and a polyethylene layer on either surface of the polypropylene layer to thereby form stretched tapes,
- wherein said polypropylene layer comprises a mixture of 70 to 95% by weight of polypropylene having a melt flow rate of 0.5 to 10 grams/10 minutes and 30 to 5% by weight of polyethylene having a density of 0.93 to 0.96 g/cm.sup.3 and said polyethylene layer comprises polyethylene having a density of 0.93 to 0.96 g/cm.sup.3 and a melt flow rate of at least 13 grams/10 minutes, and
- fibrillating the stretched tapes into split fibers.
- 10. A method for preparing an integrated split fiber article, comprising a fine network structure of split fibers comprising the steps of:
- slitting and stretching a three layer composite synthetic resin film structure having a polypropylene layer and a polyethylene layer on either surface of the polypropylene layer to thereby form stretched tapes,
- wherein said polypropylene layer comprises a mixture of 70 to 95% by weight of polypropylene having a melt flow rate of 0.5 to 10 grams/10 minutes and 30 to 5% by weight of a polyethylene having a density of 0.93 to 0.96 g/cm.sup.3 and said polyethylene layer comprises polyethylene having a density of 0.93 to 0.96 g/cm.sup.3 and a melt flow rate of at least 13 grams/10 minutes,
- fibrillating the stretched tapes into split fibers,
- mixing the resultant split fibers, and
- heating the mixing at a temperature between the melting points of the polyethylene and the polypropylene to thereby integrate together the split fibers with each other.
- 11. The method of claim 10 which comprises mixing the split fibers with plant fibrous material, and heating the mixture at a temperature between the melting points of the polyethylene and the polypropylene to thereby integrate together the split fibers with the plant fibrous material.
- 12. The method of claim 10 wherein said mixing step includes adding to the split fibers at least one additive selected from the group consisting of fibrous materials other than the plant fibrous material and water absorbing polymers.
- 13. The method of claim 11 wherein said mixing step includes adding to the split fibers at least one additive selected from the group consisting of fibrous materials other than the plant fibrous material and water absorbing polymers.
Priority Claims (1)
Number |
Date |
Country |
Kind |
225765 |
Aug 1989 |
JPX |
|
Parent Case Info
This is a division of application Ser. No. 07/574,137 filed Aug. 29, 1990, now U.S. Pat. No. 5,188,895.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
5071705 |
Tanaka et al. |
Dec 1991 |
|
5143786 |
Tanaka et al. |
Sep 1992 |
|
Foreign Referenced Citations (1)
Number |
Date |
Country |
048223 |
Mar 1988 |
JPX |
Divisions (1)
|
Number |
Date |
Country |
Parent |
574137 |
Aug 1990 |
|