Paper product for flow wrapping
AssigneeBillerud Aktiebolag (publ)
InventorsThomas Gillgren, Johan Larsson
Life of this patent
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Abstract
The present disclosure provides a coated paper product for use in a flow wrapping process, wherein: —said coated paper product comprises a paper substrate; —said paper substrate is a machine-glazed (MG) kraft paper having a glazed side and a non-glazed side; —said non-glazed side is coated with a precoating layer and a barrier coating layer; —said precoating layer comprises a polymeric binder and a pigment; and —the contact angle measured according to TAPPI T 558 between water and a surface formed by the barrier coating layer is less than 90° at the 1.0 s checkpoint.
Claims17
A coated paper product for use in a flow wrapping process, wherein:
- said coated paper product comprises a paper substrate;
- said paper substrate is a machine-glazed (MG) kraft paper having a glazed side and a non-glazed side;
- said non-glazed side is coated with a precoating layer and a barrier coating layer;
- said precoating layer comprises a polymeric binder and a pigment;
- a contact angle measured according to TAPPI T 558 between water and a surface formed by the barrier coating layer is less than 900 at the 1.0 s checkpoint;
- and
- the coated paper product is classified as recyclable according the criteria set forth by PTS Method RH:
- 021/97.
A method of producing a coated paper product for use in a flow wrapping process, comprising the steps of:
- providing a paper substrate having an air permeance measured according to ISO 5636-5:2013 of at least 55 s, said paper substrate being a machine-glazed (MG) kraft paper having a glazed side and a non-glazed side;
- precoating the non-glazed side of to form a precoating layer comprising a polymeric binder and a pigment;
- and
- barrier-coating the precoating layer to form a barrier coating layer forming a surface,
- wherein the contact angle measured according to TAPPI T 558 between water and the surface formed by the barrier coating layer is less than 900 at the 1.0 s checkpoint, and
- wherein the coated paper product is classified as recyclable according the criteria set forth by PTS Method RH:
- 021/97.
Dependencies are inferred from the claim text.