Apparatus for applying heat-shrinkable plastic sleeves to contai

Details Apparatus for applying heat-shrinkable plastic sleeves to contai Apparatus for applying heat-shrinkable plastic sleeves to contai

1987-09-16

1988-05-17

Spruill, Robert L.

Package making

Partial cover application

Band or tube

53293, 53295, 53296, B65B 1100

Patent

active

047442069

ABSTRACT:
A flattened tubular plastic tube having one pair of edge creases is withdrawn from a vertical axis reel and passed through horizontal axis rollers to impart a pair of intermediate creases. Cooperating rotating and stationary blades cut the plastic tube into short sleeves which are immediately gripped between actuator shoes on a pair of translating chains and a pair of translating frictional belts. The compressively interfaced actuator shoes and belts advance the sleeves to the inlet of a channel defined by laterally spaced apart slide members which have v-grooves into which opposite creased edges are inserted at the inlet whereupon hooks on another chain loop push the sleeves through the channel. The channel width converges so the sleeves open as they are pushed along the channel to be engageable by the head of a passing bottle. In another embodiment laterally spaced apart parallel translating chain loops carrying interfacing but spaced apart gripper shoe elements having grooves to recline one pair of sleeve edge creases between them supplant the v-grooved slide members of the first embodiment.

REFERENCES:
patent: 3802152 (1974-04-01), Strub
patent: 3974628 (1976-08-01), Konstantin
patent: 4148171 (1979-04-01), Westlund
patent: 4318685 (1982-03-01), Konstantin
patent: 4497156 (1985-02-01), Scheidegger
patent: 4514966 (1985-05-01), Konstantin
patent: 4649697 (1987-03-01), Konstantin
patent: 4693059 (1987-09-01), O'Donnell

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