In the design and manufacture of professional-grade tactical and outdoor gear, material selection affects performance, durability, and weight. X-PAC fabric, born from sailcloth technology, has become a material choice for these demanding applications due to its engineered construction.
This article provides a technical overview of X-PAC fabric, examining its composition, key properties, and appropriate use cases to inform design and procurement decisions.
X-PACファブリックとは？
X-PAC is a family of laminated composite fabrics originally developed by 寸法-ポリアント, a leading manufacturer of sailcloth. Its initial purpose was to withstand the harsh marine environment, resisting saltwater, UV radiation, and high winds.
The fabric’s excellent strength-to-weight ratio and inherent waterproofing have since made it a preferred material for manufacturers of high-performance backpacks, tactical vests, pouches, and shelters.
The Layered Construction of X-PAC Fabric
X-PAC’s performance comes from its multi-layer laminate structure:
- Outer Face Fabric: This is typically a woven nylon (e.g., 210D, 420D) or polyester, which provides the first line of defense against abrasion and scuffs. This layer is often treated for enhanced UV resistance.
- Xプライ補強: The standout feature of X-PAC fabric is its cross-ply (X-ply) layer. This grid of 45-degree diagonal fibers (often made of Vectran or polyester) is laminated into the fabric. The diagonal orientation distributes stress evenly, preventing tears and stretching. Think of it like rebar in concrete—it adds structural integrity.
- Waterproof Barrier: A monolithic film, usually Polyethylene Terephthalate (PET), is permanently bonded to the layers. This creates a waterproof barrier that does not rely on a surface coating, which can wear off over time.
- インナーライナー: A lightweight fabric layer, often polyester, protects the waterproof film from internal abrasion and provides a smooth finish for the gear’s interior.
X-PAC Fabric: Key Performance Characteristics and Comparisons
X-PAC offers a distinct set of properties when compared to other common technical fabrics like Cordura and standard ripstop nylon.
- Tear Strength and Dimensional Stability: The cross-ply reinforcement gives X-PAC high tear resistance and exceptional dimensional stability. This means packs and vests made from X-PAC are less likely to stretch or deform under load, which is critical for gear that must maintain its shape, like modular plate carriers.
- Weight Efficiency: Due to its laminated construction, X-PAC can achieve tear resistance comparable to much heavier, single-layer fabrics. For instance, X-PAC VX21 (approximately 5.9 oz/yd² with a 210D face) offers performance characteristics that are often compared to those of heavier 1000D Cordura nylon (approximately 10 oz/yd²).
- Inherent Waterproofing: Unlike standard Cordura or ripstop nylon, which require a separate Durable Water Repellent (DWR) coating to shed water, X-PAC’s waterproofing is integral to its laminated structure. This results in more consistent and long-lasting water resistance.
It is important to note that while highly waterproof, the fabric is not breathable, making it best suited for applications where waterproof protection is prioritized over ventilation.
Common X-PAC Variants and Their Applications
The X-PAC series includes several variants tailored for different needs. The following table outlines some common types:
| X-PAC バリアント | フェイス生地 | Approx. 重量(oz/yd²) | Typical Applications |
| VX21 | 210Dナイロン | 5.9 | Everyday backpacks, accessory pouches, lightweight organizers |
| VX42 | 420Dナイロン | 7.5 | Heavy-duty backpacks, tactical vests, gear that requires high abrasion resistance |
| RX30 | 300Dポリエステル | 5.5 | Ultralight backpacks, running packs, outerwear where flexibility is key |
(Reference: Dimension-Polyant X-PAC series documentation)
Applications of X-PAC in Professional and Tactical Gear
The properties of X-PAC make it suitable for a range of demanding applications:
- Tactical Equipment: Its stability is ideal for modular plate carriers and chest rigs that must hold their shape under the weight of plates and magazines. It is also used for duty belts, medical pouches, and admin pouches, where organization and durability are critical.
- Technical Backpacks: Many manufacturers of ultralight and expedition-grade backpacks utilize X-PAC for its combination of low weight, high waterproofness, and tear resistance.
- Protective Cases and Organizers: The smooth inner liner and rigid structure make it an excellent choice for electronics cases, tool rolls, and EDC organizers, protecting contents from scratches and impacts.
Care and Maintenance for X-PAC Gear
Proper care helps maintain the integrity of laminated fabrics. To preserve X-PAC gear:
- クリーニング: Wipe clean with a damp cloth and mild soap. For deeper cleaning, hand-wash gently in cool water. Avoid machine washing and harsh detergents.
- 乾燥: Air dry away from direct heat sources. Do not machine dry or place near a radiator, as high heat can risk delaminating the layers.
- ストレージ: Store in a cool, dry place. For long-term storage, ensure the gear is completely dry to prevent mildew.
修理には 粘着テープ またはX-PAC専用の補修キットで小さな裂け目を補修する。
Manufacturing with X-PAC Fabric
From a manufacturing perspective, X-PAC behaves differently from standard woven textiles. Its laminate structure requires specific techniques, such as seam taping, to maintain its full waterproof potential. It is also less flexible than some nylons, which influences design choices for packs and bags that require complex shaping.
として tactical and outdoor gear manufacturer with over 15 years of experience since 2009, we have direct experience working with X-PAC and other high-performance laminated fabrics. We understand its handling characteristics and can advise on design optimizations to leverage its strengths, such as its dimensional stability and lightweight durability.
If you are developing a product line and considering X-PAC, Cordura, or other technical materials, we can provide valuable input. We offer custom manufacturing services and can produce tactical packs, vests, and pouches to your exact specifications, using the material that best fits your performance and budget requirements.
お問い合わせ to discuss how we can help bring your product design to life.
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