Trigger sprayers, in terms of their working principle, are a type of pump sprayer. They are widely used in a variety of industries, including household chemicals, car care products, pet supplies, and gardening products.
A Brief History of Hand-Trigger Sprayers
The history of trigger sprayers is a story of a simple idea evolving to become an indispensable tool in modern life. The basic principle of converting liquid into a fine mist or stream has been around for centuries, but the modern hand-trigger sprayer is a product of post-World War II plastic technology.
Early Days: The Squeeze Bulb
Before the 1960s, early sprayers used a squeeze-bulb mechanism. When the user squeezed a rubber bulb, it would force air into the bottle, siphoning the liquid out through a nozzle. These were often cumbersome and not very effective for repeated use.
The Dawn of Plastics
The rapid advancement of plastics after World War II revolutionized packaging. Plastics were cheaper, more durable, and could be molded into complex parts, making the automation of sprayer assembly possible. The Drackett Company, a manufacturer of Windex glass cleaner, was a key innovator in promoting the use of these new plastic sprayers.
The Trigger-Style Revolution
The late 1960s saw the introduction of the trigger-style sprayer. This design was a major leap forward because it was far more ergonomic and less fatiguing for the user than the old squeeze-bulb models. By pulling a lever, a small pump inside the sprayer would draw liquid up from the bottle and force it out of the nozzle.
Modern Advancements
Today’s hand-trigger sprayers continue to evolve. They now feature adjustable nozzles to switch between a fine mist and a powerful stream, and are used in a huge variety of products, from household cleaners and garden sprays to car care and pet supplies. Their simple, effective, and user-friendly design has made them a permanent fixture in households and industries worldwide.
Types of Hand-Trigger Sprayers
Trigger sprayers are typically classified in two main ways: by their internal pump structure and by their external design.
Classification by Internal Structure
- Vertical Pump: This is the most common and economical type. The pump is positioned upright and is often hidden within the sprayer’s body.
- Horizontal Pump: The pump is positioned at a 45-degree angle. This design can allow for a longer pump stroke and a larger output. Some horizontal pump models are also designed to be anti-leakage, even when the nozzle is in the “on” position.
- All-Plastic: This type contains no metal parts, making it ideal for products that might react with or corrode metal components, such as the spring.
Classification by External Design
- Shroud Sprayers: These sprayers have an enclosed design that covers the internal pump mechanism. They are often built to be tamper-evident or to prevent leakage during transport, dosage 0.9CC-1.5CC, usually used in household cleaning products, car care products etc.
- Non-Shroud Sprayers: This type has a more visible, exposed pump structure, usually called mini trigger sprayer. They are often found on products where a sleek or simple look is desired, such as in the hair salon industry, home fragrance products etc.
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