Methods and formulations for bonding dissimilar materials
AssigneeCareFusion 303, Inc.
InventorsZehra SEVINC, Tea DATASHVILI, Fanqing MENG, Shang-Ren WU, Chinnu BRAHATHEESWARAN
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Abstract
The present disclosure is directed to formulations of cements and methods for bonding dissimilar materials. The formulations and methods can bond a Non-polyvinyl chloride (PVC) containing first polyolefin that is amorphous or has low crystallinity to a second material that is a rigid material or a hard PVC. The methods and formulations can work by co-dissolution at an interface, or activation of a one of the materials prior to bonding.
Claims20
A method of bonding a first material to a second material, the first and second materials being dissimilar, wherein
- the first material comprises a non-polyvinyl chloride (Non-PVC) polyolefin polymer, wherein the Non-PVC polyolefin polymer is amorphous or has a degree of crystallinity in a range of about 0.1% to about 50% crystallinity;
- the second material comprises a rigid amorphous material having a tensile modulus in a range of about 1800 to about 3000 MPa, a PVC having a Shore A hardness in a range of about 70 to about 85, or a combination thereof;
- the method comprising:
- i.) providing a bonding agent, the bonding agent comprising one or more of the group consisting of:
- a.) an organic solvent or solvent mixture capable of dissolving the first material and the second material;
- b.) a blend of the first material and the second material;
- c.) a polymeric material selected from a polypropylene (PP), a thermoplastic olefin (TPO), and a thermoelastic elastomer (TPE), the polymeric material being functionalized with a polar group;
- and
- ii.) bonding the first material to the second material using the bonding agent.
A method of bonding a first material to a second material, the first and second materials being dissimilar, wherein
- the first material comprises a non-polyvinyl chloride (Non-PVC) polyolefin polymer, wherein the Non-PVC polyolefin polymer is amorphous or has a degree of crystallinity in a range of about 0.1% to about 50% crystallinity;
- the second material comprises a rigid amorphous material having a tensile modulus in a range of about 1800 to about 3000 MPa, a PVC having a Shore A hardness in a range of about 70 to about 85, or a combination thereof;
- the method comprising:
- i.) modifying the first material using at least one technique from the group consisting of:
- a.) mixing the first material with up to about 51 wt % of a functionalized polymer;
- b.) mixing the first material with up to about 5 wt % of a secondary compatibilizer;
- c.) mixing the first material with up to about 5 wt % of an adhesion promoter;
- d.) mixing the first material with up to about 5 wt % of an ethylene acrylic acid copolymer;
- and
- ii.) bonding the modified first material to the second material.
A method of bonding a first material to a second material, the first and second materials being dissimilar, wherein
- the first material comprises a non-polyvinyl chloride (Non-PVC) polyolefin polymer, wherein the Non-PVC polyolefin polymer is amorphous or has a degree of crystallinity in a range of about 0.1% to about 50% crystallinity;
- the second material comprises a rigid amorphous material having a tensile modulus in a range of about 1800 to about 3000 MPa, a PVC having a Shore A hardness in a range of about 70 to about 85, or a combination thereof;
- the method comprising:
- i.) providing a bonding agent, the bonding agent comprising a solvent-free polymeric material;
- ii.) melting the bonding agent;
- and
- iii.) bonding the first material to the second material using the melted bonding agent.
Dependencies are inferred from the claim text.