Apparatus for processing continuously-fed plastics material
OwnerEnrico Attucci, Fernando Attucciinventors
Life of this patent
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Abstract
Apparatus for processing continuously-fed plastics material in strip form comprises a cyclically operated working tool for example for welding and/or shearing the material. During operation of the tool, the material is stopped adjacent the working zone of the tool and a material storage loop is formed by the continuously incoming material. Subsequent to operation of the tool, the material is drawn from the loop at a higher speed than the infeed speed until the loop has been fully taken up and the material is stretched.
Claims12
In an apparatus for processing plastics material in strip-like form including either embossing, scoring or shearing plastics strip material.
- means for continuously feeding the material, means defining a material feed path,
- tool means for performing a processing operation on the material in a working zone of the apparatus,
- means for cyclically operating the tool means,
- said material feed path being arranged to permit a material storage loop to be formed in a portion of the path and to remove the material storage loop,
- said portion being defined between the feed means and said working zone,
- means enabling the material to be drawn from the loop at a speed higher than the feed speed of the continuous feed means to remove the material storage loop, and to be stretched in said portion of the path, and means for braking the material in the material feed path and for stopping the feed of the material in said working zone during operation of the tool means.
Dependencies are inferred from the claim text.