Insulation products and methods and machines for making insulation products
The presently disclosed subject matter generally relates to recyclable insulation material for shipping containers, groceries bags, etc., machines for making the recyclable insulation material, and methods for the making the recyclable insulation material. In one aspect, a method of forming an insulation product may include forming a continuous sheet of paper into a plurality of flexible loops defining a plurality of air channels extending in a direction that is substantially perpendicular with a machine direction of the continuous sheet of paper. The method may also include immediately attaching a first layer of paper and a second layer of paper to the plurality of flexible loops as they are formed so that the continuous sheet of paper retains the plurality of flexible loops between the first layer and the second layer and that the plurality of flexible loops remain unattached with respect to one another.
1. A method of forming an insulation product, comprising:
forming a continuous sheet of paper into a plurality of flexible loops defining a plurality of air channels extending in a direction that is substantially perpendicular with a machine direction of the continuous sheet of paper; and
immediately attaching a first layer of paper and a second layer of paper to the plurality of flexible loops as they are formed so that the continuous sheet of paper retains the plurality of flexible loops between the first layer and the second layer and that the plurality of flexible loops remain unattached with respect to one another.
2. The method of claim 1 , wherein:
forming the continuous sheet of paper into a plurality of flexible loops comprises feeding the continuous sheet of paper at a first rate into a defined space between the first layer of paper and the second layer of paper that are fed at a second rate that is slower than the first rate, and
immediately attaching the first layer and the second layer to the continuous sheet of paper comprises heating the first layer and the second layer to activate an adhesive coated on surfaces of the first layer and the second layer facing the continuous sheet of paper without attaching the plurality of flexible loops to one another.
3. The method of claim 1 , wherein the plurality of air channels have lengths that are approximately parallel.
4. The method of claim 3 , wherein at least one axis, perpendicular to a feed direction and the lengths of the plurality of air channels, passes through the continuous sheet of paper at least three times after the first layer and the second layer are attached to the continuous sheet of paper.
5. The method of claim 2 , wherein a ratio of the first rate to the second rate is greater than 1.2:1.
6. The method of claim 2 , wherein a ratio of the first rate to the second rate is less than 7.5:1.
7. The method of claim 2 , wherein a ratio of the first rate to the second rate is 1.2:1 to 7.5:1.
8. The method of claim 2 , wherein a ratio of the first rate to the second rate is 1.5:1 to 6.5:1.
9. The method of claim 2 , further comprising changing the defined space using a pair of adjustable restraints.
10. A method of forming an insulation product, comprising:
forming a continuous sheet of paper into a plurality of flexible loops defining a plurality of air channels extending in a direction that is substantially perpendicular with a machine direction of the continuous sheet of paper; and
attaching a first layer of paper and a second layer of paper to the plurality of flexible loops as they are formed so that the continuous sheet of paper retains the plurality of flexible loops between the first layer and the second layer.
11. The method of claim 10 , wherein:
forming the continuous sheet of paper into a plurality of flexible loops comprises feeding the continuous sheet of paper at a first rate into a defined space between the first layer of paper and the second layer of paper that are fed at a second rate that is slower than the first rate, and
attaching the first layer and the second layer to the continuous sheet of paper comprises heating the first layer and the second layer to activate an adhesive coated on surfaces of the first layer and the second layer facing the continuous sheet of paper.
12. The method of claim 11 , wherein a ratio of the first rate to the second rate is greater than 1.1:1.
13. The method of claim 11 , wherein a ratio of the first rate to the second rate is less than 7.5:1.
14. The method of claim 11 , wherein a ratio of the first rate to the second rate is 1.1:1 to 7.5:1.
15. The method of claim 11 , wherein a ratio of the first rate to the second rate is 1.5:1 to 6.5:1.
16. A method of forming an insulation product, comprising:
forming a continuous sheet of paper into a plurality of flexible loops defining a plurality of air channels extending in a direction that is substantially perpendicular with a machine direction of the continuous sheet of paper; and
attaching a first layer of paper to the plurality of flexible loops as they are formed so that the continuous sheet of paper retains the plurality of flexible loops on the first layer and that the plurality of flexible loops remain unattached with respect to one another.
17. The method of claim 16 , wherein:
forming the continuous sheet of paper into a plurality of flexible loops comprises feeding the continuous sheet of paper at a first rate into a defined space adjacent to a first layer of paper that is fed at a second rate that is slower than the first rate, and
attaching the first layer to the continuous sheet of paper comprises heating the first layer to activate an adhesive coated on a surface of the first layer facing the continuous sheet of paper.
18. The method of claim 17 , wherein a ratio of the first rate to the second rate is less than 7.5:1.
19. The method of claim 17 , wherein a ratio of the first rate to the second rate is 1.1:1 to 7.5:1.
20. The method of claim 17 , wherein a ratio of the first rate to the second rate is 1.5:1 to 6.5:1.