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US 10,647,101 B2Granted
Method of manufacturing a multilayer material
AssigneePalziv Ltd.
InventorYosef Ben Shalom
Life of this patent
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Abstract
A multilayer material is disclosed which consists of polyethylene foam sandwiched between two external layers of high-density polyethylene. A two-step manufacturing process for forming such a multilayer material is disclosed, which consists of (1) thermal bonding of a roll stock of PE foam with a roll stock of HDPE/LDPE laminate, followed by cutting into composites, and (2) thermal bonding of two composites to form a multilayer material.
Claims10
A method of forming a multilayer material comprising forming three-layer composites, comprising:
- a. providing a first pre-formed roll comprised of an outer material layer in communication with an intermediate material layer;
- b. providing a second pre-formed roll comprised of an inner material layer;
- c. feeding said first and second pre-formed rolls through rollers;
- d. joining said intermediate material layer of said first pre-formed roll to said inner material layer of said second pre-formed roll so as to form a three-layer material;
- e. cutting said three-layer material into three-layer composites of a pre-determined length;
- f. providing a first and a second composite from step e., both composites having the same orientation;
- g. reversing the orientation of said second composite, so that the bowing of said second composite is opposite to the bowing of said first composite;
- and
- h. joining the inner material layers of said first and second composites.
6 more elements
Dependencies are inferred from the claim text.