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Performance Apparel Markets, 1st quarter 2006 Profile of Bemis: a leader in bonded seam technology High viscosity polyolefin film tapes are designed to eliminate the problem of seam puckering caused by shrinkage during wash cycles They are suitable for a number of applications Seam reinforcing tapes are designed to reinforce seams created by ultrasonic line bonding (USLB) USLB seams are weak and need reinforcement tapes PUCKER-FREE SEAM TAPE Pucker-free seam tapes are made from high viscosity polyolefin films. They are designed to eliminate the problem of seam puckering caused by shrinkage during wash cycles. The tapes are lightweight and rigid and have a uniform thickness and smooth edge, making them snag-free. Applications include front and back yokes, armhole side seams and sleeve seams. SEAM REINFORCING TAPES Seam reinforcing tapes are designed to reinforce seams created by ultrasonic bonding. Ultrasonically line bonded (USLB) seams are becoming more popular as they offer a way of producing a low profile, sleek and less abrasive seam, for which very little seam allowance is required in the fabric. USLB seams can be produced at the same rate as those made using traditional cut and sew methods. The downside, however, is that USLB seams are weak, they can be pulled apart easily, and they are not waterproof. For this reason, tapes must be used to reinforce USLB seams and make them waterproof. The seam reinforcing tapes are applied using hot air sealers. Table 7: Bemis: seam reinforcing tapes Product Applications Composition Typical seam strength SRT 1001 Soft shells, sportswear Polyurethane adhesive 70+ lb/inch (12.3 N/mm) on stretch fabric SRT 2002 Two-layer waterproof Polyurethane adhesive 50 lb/inch (8.8 N/mm) hard shell fabrics on grey fabric SRT 3001 Three-layer waterproof Polyurethane adhesive 25 lb/inch (4.4 N/mm) fabrics on polyester tricot SRT 3003 Three-layer waterproof Polyurethane adhesive 70+ lb/inch (12.3 N/mm) stretch fabrics on woven fabric SRT 3004 Three-layer waterproof Polyurethane adhesive 30+ lb/inch (5.3 N/mm) hard shell fabrics on woven fabric Source: Bemis. Decorative overlay films and fabrics enhance design and appearance OT-100 is a two-layer polyurethane film with good adhesion qualities DECORATIVE OVERLAY FILMS AND ABRASION PATCHES Decorative overlay films and fabrics are used to enhance the design and appearance of apparel. They are pre-applied with adhesive film. Overlay materials come in two forms: ● OT-100 is a two-layer polyurethane film laminated to a polyurethane adhesive film. It has good qualities of adhesion to a variety of fabrics, including water-repellent nylons. © Textiles Intelligence Limited 45
Performance Apparel Markets, 1st quarter 2006 Profile of Bemis: a leader in bonded seam technology OT-200 is made from microfibre nylon, has a soft feel and can be embossed Overlay materials may be cut to tape widths for use over seams Bemis also produces decorative adhesives for use as brand labels, emblems, patches or lettering Two types of elastic films are made for edge banding Sewfree EB adhesive tape is used to finish a leg or arm opening— —and Clarense is used as an elastic and for decoration Clarense is thinner than traditional knitted or woven elastics and offers more design flexibility Bemis has produced a range of speciality films Aliphatic films are used for logo protection and security windows Staticade electrostatic discharge (ESD) film has been developed for the clean room environment ● OT-200 is made from microfibre nylon laminated with polyurethane adhesive film. It has a soft feel and can be used on a variety of fabrics such as soft shells. This material may be embossed in either a diamond pattern or a basket pattern. Overlay materials may be cut to tape widths for use over seams for decorative purposes or to enhance water resistance. They can also be produced in wider widths for specific design requirements such as abrasion patches. Bemis also produces decorative adhesives for use as brand labels, emblems, patches or lettering which are bonded permanently to the fabric without the need for stitching. They may be used, for example, in sports uniforms. EDGE BANDING TAPES Bemis manufactures two types of elastic films which can be used as edge banding tapes: ● Sewfree EB adhesive tape; and ● Clarense. Sewfree EB adhesive tape is generally used for edge banding garments such as underwear. It is typically used to finish the edge of a leg or arm opening. Clarense is the brand name given to the company’s thermoplastic urethane film which can be used as an elastic and for decoration. It is durable and chemical resistant and is used in lingerie. If used as an elastic, Clarense can improve the wear or fit of a garment if it is sewn into critical seams for reinforcement. It is thinner than traditional knitted or woven elastics, and offers more design flexibility. SPECIALITY FILMS Bemis has produced a range of speciality films, each of which has been designed for a specific purpose. Aliphatic films have been designed for applications such as logo protection and security windows. Characteristics of such films are optical clarity, weather durability, scratch resistance and flexibility. Another speciality is Staticade electrostatic discharge (ESD) film. This has been developed for the clean room environment in which anti-static capability is critical. Staticade is a clear film which is capable of dissipating static electricity. Its uses include various clean room applications, including garments, soft walls, hard walls, mats and general packaging. 46 © Textiles Intelligence Limited
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