Laminate Bonding
Laminate bonding is a process that adheres and integrates multiple layers such as the face fabric, lining, film, and foam, adding functionality, thickness, and appearance.
Definition and Overview
Laminate bonding is a composite process that joins different materials with adhesive, heat, film, and other methods. By placing a membrane or foam between the face fabric and lining, it gives properties and structure that are hard to achieve with a single layer of fabric alone.
Laminate is often used to mean laminating a film or membrane onto fabric, while bonding is used to mean adhering fabrics together. However, in business transactions, the two are sometimes used broadly to mean the same thing.
Features
Depending on the layers combined, it can be designed for firmness, thickness, warmth retention, wind resistance, waterproofing, and more. When a film is applied to the surface, it may create a glossy or leather-like appearance, and combining it with knit or fuzzy material on the back can also adjust the feel against the skin.
On the other hand, bonding may make the fabric stiffer or reduce breathability and stretch. If the layers have different stretch or shrinkage characteristics, wrinkling, warping, or delamination may occur during washing or over time.
- Performance can be adjusted by combining face fabric, lining, film, and foam.
- The type of adhesive layer and processing conditions affect hand feel, durability, and sewing suitability.
- Even when waterproofing is required, water penetration through the seams must be considered separately.
Main Applications
It is used in garments that require thickness, wind resistance, or weather resistance, such as outerwear, blousons, coats, pants, and sports or outdoor wear. Because it makes it easier to give fabric structure, it is also suitable for items with a three-dimensional silhouette.
Outside of apparel, it is also used for bags, boxes, hats, miscellaneous goods, and interior applications. Depending on the application, it is important to check surface abrasion resistance, back-side slipperiness, and stiffness as a core material.
Selection and Handling Notes
When selecting, confirm not only the materials of each layer to be bonded, but also thickness, industry weight, stretch direction, breathability, and bonding strength according to the application. If waterproof breathability is the goal, check the film performance as well as seam treatment in the finished product.
During sewing, needle holes may be noticeable, and water may pass through them. Thick materials are prone to skipped stitches and seam shifting at stepped areas, so needles, thread, feed, and seam allowance overlap should be tested in advance.
Whether washing, dry cleaning, or ironing is allowed depends on the adhesive layer. High temperatures, strong friction, and prolonged hydrolysis may affect bonding performance, so wash tests and aging checks should be performed on the actual item, and care labels should be set accordingly.
Differences from Similar Terms
Waterproof breathability is a term that describes performance that resists water while allowing water vapor to pass through. Laminate is one method for achieving that performance, but not all laminated fabrics have waterproof breathability.
Water-repellent finishing is a treatment that makes it easier for water to bead up on the fabric surface, and its mechanism differs from laminate bonding, which joins layers together. Because water repellency may decline with use and washing, it should be evaluated separately from waterproofing.
Frequently Asked Questions
Are laminate and bonding the same?
Both are terms related to processing that integrates multiple layers into one, but laminate is sometimes used to mean laminating a film or similar material, while bonding is used to mean adhering materials together. In practice, the terms overlap, so check the layer structure and bonding method.
Can bonded fabric be machine-washed at home?
Whether home washing is possible depends on the combination of face fabric, lining, adhesive, and film. Since heat and friction may affect the adhesive layer, it is important to judge not only from the fabric care label but also by performing a wash test on the finished product.
Does laminated fabric leak water through the seams?
Even if a waterproof film is laminated, needle holes are created during sewing, so water may enter through the seams. For products where waterproofing is important, consider additional waterproof treatment, such as covering the seams with seam tape.
