A TECHNO-ECONOMIC NEWS MAGAZINE FOR MEDICAL PLASTICS AND PHARMACEUTICAL INDUSTRY
Our 15th Year of Publication
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Manufacturing

Bonding Medical Plastics

3) Plasticized PVC

The heavily plasticized PVC poses unique challenges for bonding. The initial adhesion can be disturbed by the large amounts of free plasticizer. It is advisable to test heat aged bonded parts as this accelerates the migration of plasticizer to the bond and it helps to evaluate long term adhesion. The light curing and polyurethane adhesives have been formulated to address this challenge.

4) Stress cracking of Plastics

Stress cracking is another area which has to be kept in mind before a manufacturer uses any method to join. Stress cracking occurs primarily because the monomer or the solvent attack the polymer surface and allow the chemicals to penetrate through and generate the internal stresses which could cause stress cracking. Some of the crystalline thermoplastics like ABS , polypropylene, Polycarbonate, Polystyrene , SAN, PPO, are susceptible to stress cracking.

Device 1 : Hypodermic Needles

The hypodermic needle is one of the largest manufacturing disposable device. The different joints/ parts made up of different materials that can be bonded with Loctite adhesive is mentioned below:

  1. Binding & Sealing of Cannulae (SS) to Hub (ABS) with Loctite 3011

  2. Bonding & Sealing of Cannulae (SS) to Hub (PC) with Loctite 3011

  3. Bonding & Sealing of Cannulae (SS) to Hub (PP) with Loctite Hysol 210213

Device 2 : Opthalmic Cannulae & Surgical Blade

  1. Bonding & Sealing of Cannulae (SS) to Hub (PC) with Loctite 4061

  2. Bonding & Sealing of Surgical Blade (SS) to Holder (PC) with Loctite 3321
Device 3 : Connectors
Bonding of Butterfly (ABS) to Hub (PC) with Loctite 4062		 Device 4 : CO2 Filters
Bonding and Sealing of Filter lid (PP) to bucket (PP) withLoctite 4541 + 7701
Device 5 : Hearing Aid
Bonding of Hearing aid shell (Acrylic) to Face plates (CAP) with Loctite 4061

Device 6 : Blood Collection Reservoir
Bonding & Sealing of Lid (PC) to Housing (PC) with Loctite 3211
Device 7 : Blood Collection Tube
Bonding of Shaft ( Polystyrene ) to tube ( Polyethylene ) with Loctite 3311		 Device 8 : Thermal Dilution Catheter
Bonding of Balloon ( Latex ) to Rigid tube ( PVC or PU ) with Loctite 4304
Device 9 : Heart Catheter
a) Bonding & Sealing of Flexible tube (PVC) to Valve (PC) with Loctite 4305
b) Bonding & Sealing of Valve (PC) to Y- tube ( PVC ) with Loctite 4305		 Device 10 : Drainage Catheter
a) Bonding of Needle ( SS ) to Hub ( EVA ) with Loctite 3311
b) Bonding of Hub ( EVA ) to Sheath ( PU ) with Loctite 4851
 
Device 11 : Inflation Devices
Bonding & Sealing of Connectors ( PU ) to Syringe ( PC ) with Loctite 3321		 Device 12 : Seaparator Housing
Bonding & Sealing of two halves ( PC ) with Loctite 3211
Device 13 : Cell Culture Cap
Sealing bead in Cell culture cap ( PP ) with Loctite 5248		 Device 14 : Pacemaker
Potting of Sensor with Loctite 5248
Device 15 : Blood Fat Filter
Bonding & Sealing of Filter casing( PC ) to Filter material ( Filter paper ) with Loctite 3321		 Device 16 : Sterilizer Brush
Bonding of brush ( Sponge ) to Holder ( PP ) with Loctite 4011 + 7701
Device 17 : Disposable Transducer
Potting of Transducer ( PC ) with Loctite 3211
Bonding of Diaphragm ( PU ) to Transducer casing ( PC ) with Loctite 3301		    

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