Process for manufacture of tubular film

Details Process for manufacture of tubular film Process for manufacture of tubular film

1982-09-30

1984-05-08

Thurlow, Jeffery R.

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Production of continuous or running length

264569, 425 72R, 4253261, B29D 722

Patent

active

044473877

ABSTRACT:
A process for forming a blown film from a thermoplastic resin wherein a source of cooling air is induced to flow from the atmosphere in contact with another source of pressurized cooling air whereby increased production rates can be obtained.

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patent: 3548042 (1970-12-01), Hinricks
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patent: 3957566 (1976-05-01), Rahlfs
patent: 4243619 (1981-01-01), Fraser et al.
patent: 4282177 (1981-08-01), Kurtz et al.
patent: 4294746 (1981-10-01), Blair et al.
patent: 4302565 (1981-11-01), Goeke et al.
patent: 4330501 (1982-05-01), Jones et al.

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