In the ultrasonic welding method, ultrasonic vibration is imparted to a first resin member via a horn while applying a pressing force to the first resin member and a second resin member in which weld portions and come into contact with each other by using a jig for supporting the second resin member and the horn that is disposed to face the jig and in contact with the first resin member so as to weld the first resin member and the second resin member, in which a jig of which a support surface for supporting the second resin member is formed of an elastomer is used as the jig.

In the ultrasonic welding method, ultrasonic vibration is imparted to a first resin member via a horn while applying a pressing force to the first resin member and a second resin member in which weld portions and come into contact with each other by using a jig for supporting the second resin member and the horn that is disposed to face the jig and in contact with the first resin member so as to weld the first resin member and the second resin member, in which a jig of which a support surface for supporting the second resin member is formed of an elastomer is used as the jig.

The present disclosure is directed to processes for producing ultrasonic sealable film structures and flexible containers with ultrasonic seals. The film structure includes a first multilayer film and a second multilayer film. Each multilayer film includes a backing layer and a seal layer. Each seal layer includes an ultrasonic sealable olefin-based polymer (USOP) having the following properties: (a) a heat of melting, Hm, less than 130 J/g, (b) a peak melting temperature, Tm, less than 125 C., (c) a storage modulus in shear (G) from 50 MPa to 500 MPa, and (d) a loss modulus in shear (G) greater than 10 MPa.

The multilayer films are arranged such that the seal layer of the first multilayer film is in contact with the seal layer of the second multilayer film. The seal layers form an ultrasonic seal having a seal strength from 30 N/15 mm to 80 N/15 mm when ultrasonically sealed at 4 N/mm seal force.

The present disclosure is directed to processes for producing ultrasonic sealable film structures and flexible containers with ultrasonic seals. The film structure includes a first multilayer film and a second multilayer film. Each multilayer film includes a backing layer and a seal layer. Each seal layer includes an ultrasonic sealable olefin-based polymer (USOP) having the following properties: (a) a heat of melting, Hm, less than 130 J/g, (b) a peak melting temperature, Tm, less than 125 C., (c) a storage modulus in shear (G) from 50 MPa to 500 MPa, and (d) a loss modulus in shear (G) greater than 10 MPa.

The multilayer films are arranged such that the seal layer of the first multilayer film is in contact with the seal layer of the second multilayer film. The seal layers form an ultrasonic seal having a seal strength from 30 N/15 mm to 80 N/15 mm when ultrasonically sealed at 4 N/mm seal force.

A tube-in-tube assembled parison for preparation of an elongated medical device. The parison if formed by assembling in tube-in-tube fashion a first tube of orientable polymer material and a second tube formed of orientable polymer material disposed around the first tube, with an adhesive tie layer disposed between the first and second tubes. The tubes are brought into contact to form a unitary parison. The adhesive may allow movement between the polymer layers during balloon blowing. The first tube, or the second tube, or both, may have been longitudinally pre-stretched after formation thereof but before assembly of the parison.

A tube-in-tube assembled parison for preparation of an elongated medical device. The parison if formed by assembling in tube-in-tube fashion a first tube of orientable polymer material and a second tube formed of orientable polymer material disposed around the first tube, with an adhesive tie layer disposed between the first and second tubes. The tubes are brought into contact to form a unitary parison. The adhesive may allow movement between the polymer layers during balloon blowing. The first tube, or the second tube, or both, may have been longitudinally pre-stretched after formation thereof but before assembly of the parison.

The present disclosure is directed to processes for producing ultrasonic sealable film structures and flexible containers with ultrasonic seals. The film structure includes a first multilayer film and a second multilayer film. Each multilayer film includes a backing layer and a seal layer. Each seal layer includes an ultrasonic sealable olefin-based polymer (USOP) having the following properties: (a) a heat of melting, Hm, less than 130 J/g, (b) a peak melting temperature, Tm, less than 125 C., (c) a storage modulus in shear (G) from 50 MPa to 500 MPa, and (d) a loss modulus in shear (G) greater than 10 MPa. The multilayer films are arranged such that the seal layer of the first multilayer film is in contact with the seal layer of the second multilayer film. The seal layers form an ultrasonic seal having a seal strength from 30 N/15 mm to 80 N/15 mm when ultrasonically sealed at 4 N/mm seal force.

The present disclosure is directed to processes for producing ultrasonic sealable film structures and flexible containers with ultrasonic seals. The film structure includes a first multilayer film and a second multilayer film. Each multilayer film includes a backing layer and a seal layer. Each seal layer includes an ultrasonic sealable olefin-based polymer (USOP) having the following properties: (a) a heat of melting, Hm, less than 130 J/g, (b) a peak melting temperature, Tm, less than 125 C., (c) a storage modulus in shear (G) from 50 MPa to 500 MPa, and (d) a loss modulus in shear (G) greater than 10 MPa. The multilayer films are arranged such that the seal layer of the first multilayer film is in contact with the seal layer of the second multilayer film. The seal layers form an ultrasonic seal having a seal strength from 30 N/15 mm to 80 N/15 mm when ultrasonically sealed at 4 N/mm seal force.

The invention relates to a method to reduce or prevent agglomeration of polyisobutylene particles in aqueous media by LCST compounds and highly pure isobutylenes obtained thereby. The invention further relates to polyisobutylene products comprising the same or derived therefrom.

Methods and apparatuses for bonding polymeric parts are disclosed. Specifically, in one embodiment, the polymeric parts are bonded by plastically deforming them against each other while they are below the glass transition temperatures.