Cohesive coating for snack food packaging

A water based cold seal cohesive coating for bonding one or more substrates together to form a flexible package to contain an article, said cohesive coating comprising the following components:

• about 50% to about 90% by weight of a natural rubber latex emulsion;
• about 10% to about 50% by weight of a non-self-crosslinking acrylic emulsion;
• about 0.01% to about 10% by weight water;
• and
• one or more ingredient selected from an anti-foam agent, ammonium hydroxide, a surfactant, an anti-blocking agent, an inert filler, and a conditioning agent;
• so that in combination the components total 100% by weight of said cohesive coating wherein the cohesive coating forms a peelable and non-resealable closure for a flexible package, said closure having a cohesive strength of at least about 300 g/inch after being dried on a substrate for said package at a temperature of at least about 260° F.

A water based cold seal cohesive coating for bonding one or more substrates together to form a flexible package to contain an article, said cohesive coating comprising the following components:

• about 60% to about 80% by weight of a natural rubber latex emulsion;
• about 20% to about 40% by weight of a non-self-crosslinking acrylic emulsion;
• about 0.01% to about 10% by weight water;
• and
• one or more ingredient selected from an anti-foam agent, ammonium hydroxide, a surfactant, an anti-blocking agent, an inert filler, and a conditioning agent;
• so that in combination the components total 100% by weight of said cohesive coating wherein the cohesive coating forms a peelable and non-resealable closure for a flexible package, said closure having a cohesive strength of at least about 300 g/inch after being dried on a substrate for said package at a temperature of at least about 260° F.

A water based cold seal cohesive coating for bonding one or more substrates together to form a flexible package to contain an article, said cohesive coating comprising the following components:

• about 68% by weight of a natural rubber latex emulsion;
• about 30% by weight of a non-seif-crosslinking acrylic emulsion;
• about 1.2% by weight water;
• about 0.4% by weight of an anti-foam agent;
• about 0.2% by weight of ammonium hydroxide;
• about 0.1% by weight of a surfactant;
• and
• about 0.1% by weight of an anti-blocking agent.

A flexible packaging material for containing a food article, comprising:

• a substrate in the form of a flexible sheet of material having opposite longitudinal edges;
• and
• a water based cold seal cohesive coating disposed on at least one of said longitudinal edges, said cohesive coating comprising the following components:
• about 25% to about 90% by weight of a natural rubber latex emulsion;
• about 10% to about 75% by weight of a non-self-crosslinking acrylic emulsion;
• about 0.01% to about 10% by weight water;
• and
• one or more ingredient selected from an anti-foam agent, ammonium hydroxide, a surfactant, an anti-blocking agent, an inert filler, a conditioning agent, and a stabilizer;
• so that in combination the components total 100% by weight of said cohesive coating wherein the cohesive coating forms a peelable and non-resealable closure for a flexible package, said closure having a cohesive strength of at least about 300 g/inch after being dried on a substrate for said package at a temperature of at least about 260° F.