Method of producing mat with valves therein

Details Method of producing mat with valves therein Method of producing mat with valves therein

1985-09-11

1987-10-27

Coan, James F.

Cutting

Processes

Puncturing

83289, B26F 110

Patent

active

047021330

ABSTRACT:
A machine and method to operate the machine to provide a plurality of valve-like perforations in the rubber-like backing of a nap mat or carpet by delivering the nap mat or carpet to and under a spiked roll. The machine includes a sensing device to ensure the leading and trailing edges of the nap mat are not perforated by the spiked roll.

REFERENCES:
patent: 3578311 (1971-05-01), Wood et al.
patent: 3926424 (1975-12-01), Gerstenberger et al.
patent: 4020725 (1977-05-01), Climo
patent: 4326909 (1982-04-01), Slavik
patent: 4442740 (1984-04-01), Rayton
patent: 4597820 (1986-07-01), Nozaka

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