MARC details
| 000 -LEADER |
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| fixed length control field |
02895nam a22003257a 4500 |
| 003 - CONTROL NUMBER IDENTIFIER |
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| control field |
OSt |
| 005 - DATE AND TIME OF LATEST TRANSACTION |
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| control field |
20250716133904.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
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250716b |||||||| |||| 00| 0 eng d |
| 040 ## - CATALOGING SOURCE |
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| Original cataloging agency |
TUPM |
| Language of cataloging |
English |
| Transcribing agency |
TUPM |
| Modifying agency |
TUPM |
| Description conventions |
rda |
| 050 ## - LIBRARY OF CONGRESS CALL NUMBER |
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| Classification number |
BTH TJ 145 |
| Item number |
C47 2025 |
| 100 ## - MAIN ENTRY--PERSONAL NAME |
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| Personal name |
Cepeda, Sofia Margarette D. |
| Relator term |
author |
| 245 ## - TITLE STATEMENT |
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| Title |
Design and development of a polyester yarn production machine using recycled polyethylene terephthalate (pet) bottles/ |
| Statement of responsibility, etc. |
Sofia Margarette D. Cepeda, Reena D. Miranda, Louise Nicole R. Montes, Aaron Radjabel C. Santos, and Chariza Mae S. Santos.-- |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. |
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| Place of publication, distribution, etc. |
Manila: |
| Name of publisher, distributor, etc. |
Technological University of the Philippines, |
| Date of publication, distribution, etc. |
2025. |
| 300 ## - PHYSICAL DESCRIPTION |
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| Extent |
xiii, 112pages: |
| Dimensions |
29cm. |
| 336 ## - CONTENT TYPE |
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| Source |
rdacontent |
| 337 ## - MEDIA TYPE |
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| Source |
rdamedia |
| 338 ## - CARRIER TYPE |
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| Source |
rdacarrier |
| 500 ## - GENERAL NOTE |
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| General note |
Bachelor's thesis<br/> |
| 502 ## - DISSERTATION NOTE |
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| Dissertation note |
College Of Engineering.--<br/> |
| Degree type |
Bachelor of science in mechanical engineering: |
| Name of granting institution |
Technological University of the Philippines, <br/> |
| Year degree granted |
2025. |
| 504 ## - BIBLIOGRAPHY, ETC. NOTE |
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| Bibliography, etc. note |
Includes bibliographic references and index. |
| 520 ## - SUMMARY, ETC. |
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| Summary, etc. |
This study aimed to design, develop, and evaluate a prototype machine capable of<br/>producing monofilament polyester yarn from 200 grams of recycled polyethylene<br/>terephthalate (PET) bottle waste. The machine integrated key processes melting, rolling,<br/>and winding into a compact system for small-scale and community-level recycling<br/>applications.<br/>A developmental research design with a prototyping methodology was employed.<br/>The process began with the conceptualization and technical design of the machine,<br/>followed by the fabrication and assembly of essential components such as a 200g-capacity<br/>hopper, temperature-controlled heating bands (180°C to 220°C), an extruder screw with a<br/>barrel, rubber rollers, a water-cooling system, and an engineering plastic winder.<br/>Test runs demonstrated the machine's ability to produce approximately 11 meters<br/>of 1 mm diameter polyester yarn from 0.5 kg of PET in 1 hour and 15 minutes per batch.<br/>However, the tensile strength of the yarn averaged only 0.27 × 10−3 MPa below the<br/>industrial standard making it suitable only for light-duty applications. An economic<br/>analysis revealed that the machine has a 30.93% return on investment (ROI) in its first year,<br/>with a break-even time of approximately 3.23 years.<br/>The study concluded that the prototype machine is technically feasible,<br/>operationally efficient, and economically viable for small-scale PET waste recycling into<br/>yarn. The project offers a sustainable solution to plastic waste management and contributes<br/>to promoting circular economy practices. |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
Polyethylene Terephthalate (PET) |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
Polyester yarn |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
Recycling |
| 700 ## - ADDED ENTRY--PERSONAL NAME |
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| Personal name |
Miranda, Reena D. |
| Relator term |
author |
| 700 ## - ADDED ENTRY--PERSONAL NAME |
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| Personal name |
Montes, Louise Nicole R. |
| Relator term |
author |
| 700 ## - ADDED ENTRY--PERSONAL NAME |
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| Personal name |
Santos, Aaron Radjabel C. |
| Relator term |
author |
| 700 ## - ADDED ENTRY--PERSONAL NAME |
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| Personal name |
Santos, Chariza Mae S. |
| Relator term |
author |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) |
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| Source of classification or shelving scheme |
Library of Congress Classification |
| Koha item type |
Bachelor's Thesis COE |
| Suppress in OPAC |
No |