Enoch Ferngren thiab William Kopitke thawj zaug tshawb xyuas qhov tshuab molding. Lub hauv paus ntsiab lus ntawm cov txheej txheem no yog los ntawm tshuab raj ntawm khob iav. Nyob rau hauv 1938, Ferngren thiab Kopitke ua ib lub tshuab moulding tshuab thiab muag nws rau Hartford teb chaws Ottoman. Qhov no yog pib ntawm kev lag luam tshuab molding. Nyob rau hauv 1840s, ntau yam thiab ntau ntawm cov khoom yas raug heev, yog li ntawd tshuab molding txheej txheem tsis tsim kom txog thaum lig dhau lawm. Nrog rau kev nce hauv ntau hom khoom thiab nce nyob rau hauv productivity, ntau thiab ntau cov khoom yas yog tsim los ntawm lub tshuab molding txheej txheem. Hauv kev lag luam muag dej haus hauv Teb Chaws Asmeskas, muaj pes tsawg lub hnab ntim tau ntau tshaj ntawm pes tsawg xyoo 1977 txog 10 billion nyob rau xyoo 1999.
Cov tshuab moulding yog pib tsim cov tsawg ntom polyethylene vials thaum tsov rog ntiaj teb zaum ob. Nyob rau hauv lub lig 1950, nrog rau yug ntawm high-ntom polyethylene thiab kev loj hlob ntawm tshuab molding cav, tshuab molding tshuab tau dav siv. Hollow lub khob ntim tau li ob peb txhiab tawm hauv lub ntim, thiab qee qhov tau siv computer. Cov khoom uas tsim nyog rau tshuab mould muaj xws li polyethylene, polyvinyl chloride, polypropylene, polyester, thiab lwm yam., Thiab cov hollow resulting ntim yog dav siv ua cov ntim muaj ntim.
Raws li txoj kev sib tw ua qauv, tshuab moulding tau muab faib ua extrusion tshuab moulding thiab txhaj tshuaj moulding, thiab cov tsim tshiab khiv muaj ntau txheej tshuab molding thiab ncab tshuab molding.
Nyob hauv txheej txheem extrusion, cov hnab yas yas yog keeb xeeb extruded rau hauv extrusion tshuab molding tuag los ntawm ib cov ntsia hlau, thiab ces cov nram qab no pwm thiab compressed roj yog siv los paub lub molding ntawm cov khoom.