A process for the production of a polymeric article comprises: (a) forming a ply having successive layers, namely, (i) a first layer made up of strands of an oriented polymer material; (ii) a second layer of a polymeric material; (iii) a third layer made up of strands of an oriented polymeric materi
A process for the production of a polymeric article comprises: (a) forming a ply having successive layers, namely, (i) a first layer made up of strands of an oriented polymer material; (ii) a second layer of a polymeric material; (iii) a third layer made up of strands of an oriented polymeric material, wherein the second layer has a lower peak melting temperature that of the first and third layers; (b) subjecting the ply to conditions of time, temperature, and pressure sufficient to melt a proportion of the fits layer, to melt the second layer entirely, and to melt a proportion of the third layer, and to compact the ply; and (c) cooling the compacted ply. The resultant articles have good mechanical properties yet may be made at a lower compaction temperature than articles not employing the second layer, leading to a more controllable manufacturing process.
대표청구항▼
1. A polymeric article having a non-planar shape comprising a compacted ply including at least three layers that is adapted to be subjected to conditions of time, temperature and a single compaction temperature to melt at least 10% but no more than 30% by volume of the first and third layers and sub
1. A polymeric article having a non-planar shape comprising a compacted ply including at least three layers that is adapted to be subjected to conditions of time, temperature and a single compaction temperature to melt at least 10% but no more than 30% by volume of the first and third layers and substantially all of the second layer wherein the compacted ply is further configured to be subjected to a compaction pressure to form a non-planar article, wherein a thickness of the first and third layers individually exceed a thickness of the second layer, and wherein the first and third layers of ply comprise the same type of polymer and the second layer comprises a polymer with the same chemical composition and grade of polymers as the first and third layers with a lower degree of molecular orientation and lower peak melting temperature than that of the first and third layers. 2. The polymeric article of claim 1 wherein a layer of ply comprises a polymer selected from the group consisting of polyethylene, polypropylene, polyoxymethylene, and polyester. 3. The polymeric article of claim 1 wherein a proportion of the article that is melted is in a range of about 1 to about 35% (vol/vol) of the total article. 4. A polymeric article having a non-planar shape comprising a compacted ply including at least three layers that is adapted to be subjected to conditions of time, temperature and a single compaction temperature to melt at least 10% but no more than 30% by volume of the first and third layers and substantially all of the second layer wherein the compacted ply is configured to be subjected to a compaction pressure to form a non-planar article then cooled, wherein a thickness of the first and third layers individually exceed a thickness of the second layer, and wherein the first and third layers of ply comprise the same type of polymer and the second layer comprises a polymer with the same chemical composition and grade of polymers as the first and third layers with a lower degree of molecular orientation and lower peak melting temperature than that of the first and third layers. 5. The polymeric article of claim 4 wherein a layer of ply comprises a polymer selected from the group consisting of polyethylene, polypropylene, polyoxymethylene, and polyester. 6. The polymeric article of claim 4 wherein a proportion of the article that is melted is in a range of about 1 to about 35% (vol/vol) of the total article. 7. A polymeric article formed into a shape comprising a compacted ply including at least three layers that is adapted to be subjected to conditions of time, temperature and a single compaction temperature to melt at least 10% but no more than 30% by volume of the first and third layers and substantially all of the second layer wherein the compacted ply is configured to be subjected to a compaction pressure and heat to form a non-planar article, wherein a thickness of the first and third layers individually exceed a thickness of the second layer, and wherein the first and third layers of ply comprise the same type of polymer and the second layer comprises a polymer with the same chemical composition and grade of polymers as the first and third layers with a lower degree of molecular orientation and lower peak melting temperature than that of the first and third layers. 8. The polymeric article of claim 7 wherein a layer of ply comprises a polymer selected from the group consisting of polyethylene, polypropylene, polyoxymethylene, and polyester. 9. The polymeric article of claim 7 wherein a proportion of the article that is melted is in a range of about 1 to about 35% (vol/vol) of the total article. 10. A polymeric article formed into a shape comprising a compacted ply including at least three layers that is adapted to be subjected to conditions of time, temperature and a single compaction temperature to melt at least 10% but no more than 30% by volume of the first and third layers and substantially all of the second layer wherein the compacted ply is configured to be subjected to a compaction pressure and heat to form a non-planar article then cooled, wherein a thickness of the first and third layers individually exceed a thickness of the second layer, and wherein the first and third layers of ply comprise the same type of polymer and the second layer comprises a polymer with the same chemical composition and grade of polymers as the first and third layers with a lower degree of molecular orientation and lower peak melting temperature than that of the first and third layers. 11. The polymeric article of claim 10 wherein a layer of ply comprises a polymer selected from the group consisting of polyethylene, polypropylene, polyoxymethylene, and polyester. 12. The polymeric article of claim 10 wherein a proportion of the article that is melted is in a range of about 1 to about 35% (vol/vol) of the total article.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (60)
Gorbach Sherwood L. (419 Beacon St. Chestnut Hill MA 02115) Goldin Barry R. (38 Adella Ave. W. Newton MA 02165), L. acidophilus strains.
Dequin Andre-Michel L. (Aix en Provence FRX) Daldoss Louis J. (Aix en Provence FRX) Barquet Henri F. (Chateauneuf les Martigues FRX), Counter-torque device with ducted tail rotor and ducted flow-straightening stator, for helicopters.
Eickman Nancy C. (Mountainside NJ) Fabisiak Walter (Easton PA) Dix Robert (Wayne NJ), High modulus polyethylene fiber bundles as reinforcement for brittle matrices.
Kavesh Sheldon (Whippany NJ) Prevorsek Dusan C. (Morristown NJ), High tenacity, high modulus polyethylene and polypropylene fibers and intermediates therefore.
Krupp Stephen P. (Lake Jackson TX) Knickerbocker Edward N. (Lake Jackson TX) Bieser John O. (Lake Jackson TX), Improved spunbonding of linear polyethylenes.
Krueger Dennis L. (St. Paul MN) Insley Thomas I. (St. Paul MN) Meyer Daniel E. (St. Paul MN) Rolando Richard J. (St. Paul MN), Method for preparing radiation resistant polypropylene articles.
Thiel Alfons W. (Uferstrasse 15 Mainz DEX) Geppert Barbara (Schonbergstrasse 75 Wiesbaden DEX), Method for the manufacture of thin-walled shaped articles of crystalline thermoplastic material.
Harpell Gary A. (Morristown NJ) Kavesh Sheldon (Whippany NJ) Palley Igor (Madison NJ) Prevorsek Dusan C. (Morristown NJ), Network of polyethylene fibers.
Greatorex Anthony T. (Syston GB2) Robbins Joseph (Bradgate View GB2) Toon Ernest A. (Wigston Magna GB2) Thompson David A. (Sileby GB2), Precision control of the thickness of heat-softenable material.
Willenberg Bernd (Bayer Aktiengesellschaft D 5090 Leverkusen ; Bayerwerk DEX) El Sayed Aziz (Bayer Aktiengesellschaft D 5090 Leverkusen ; Bayerwerk DEX) Rhr Harry (Bayer Aktiengesellschaft D 5090 Lev, Process for the production of mouldings and films from thermotropic polymers.
Harpell Gary A. (Morristown NJ) Kavesh Sheldon (Whippany NJ) Palley Igor (Madison NJ) Prevorsek Dusan C. (Morristown NJ), Producing modified high performance polyolefin fiber.
Kavesh Sheldon (Whippany NJ) Kim Kwang (Seoul NJ KRX) Kwon Young D. (Morristown NJ) Prevorsek Dusan C. (Morristown NJ), Rigid polyethylene reinforced composites having improved short beam shear strength.
Booker Hazael E. (Charlotte NC) Davies Barrie L. (Charlotte NC) Hughes Alfred J. (Charlotte NC) Shimalla Charles J. (Charlotte NC), Selfbonded nonwoven fabrics.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.