Views: 376 Author: GYD Publish Time: 2025-05-16 Origin: Site
Content Menu
● What is a Bottom Glue Spreader?
>> Key Components of a Bottom Glue Spreader
● How Does a Bottom Glue Spreader Work?
● Types of Bottom Glue Spreaders
>> 1. Manual Hand-Held Glue Spreaders
>> 2. Automatic Four-Roller Glue Spreaders
● Applications of Bottom Glue Spreaders
● Advantages of Using Bottom Glue Spreaders
● Innovations and Improvements in Bottom Glue Spreaders
● Frequently Asked Questions (FAQs)
In the woodworking and plywood manufacturing industries, the precision and efficiency of glue application are critical for product quality and production speed. Among various adhesive application tools, the *Bottom Glue Spreader* plays a vital role. This article explores the technical aspects, working principles, types, and innovations related to bottom glue spreaders, supported by images and videos to enhance understanding.
A bottom glue spreader is a specialized machine or device designed to apply adhesive evenly on the underside of veneers, wood panels, or other flat materials. It ensures uniform glue distribution, which is essential for strong bonding and minimizing glue waste.
- Glue Rollers: Typically rubber-covered or made from synthetic materials, these rollers pick up glue from a reservoir and transfer it evenly to the material surface.
- Scraper Rollers: Positioned opposite the glue rollers, they regulate the glue thickness by scraping off excess adhesive.
- Glue Tank: Holds the adhesive, supplying it to the rollers either by direct contact or via a pump system.
- Adjusting Mechanisms: Devices to control the gap between rollers and the pressure applied, allowing customization based on material thickness and glue viscosity.
- Safety Features: Enclosures, safety flaps, and emergency stops to protect operators during machine operation.
The bottom glue spreader functions by transferring adhesive from the glue tank to the bottom surface of the wood or veneer as it passes through the machine.
- The lower glue roller picks up adhesive from the glue tank.
- The upper glue roller (if present in a top and bottom spreader) applies glue to the top surface.
- The material passes between these rollers, receiving glue on both sides if designed as a top and bottom spreader.
- Scraper rollers rotate in the opposite direction to the glue rollers, removing excess glue to ensure a consistent layer.
- The amount of glue applied is controlled by adjusting the gap between the glue rollers and scraper rollers, as well as roller speed.
This process ensures precise glue spread, which is crucial for quality bonding and cost efficiency.
These are portable devices with a roller mechanism inside a container that holds glue. The roller applies glue evenly as the operator moves it over the surface.
- Made with aluminum extrusion and ergonomic handles.
- Suitable for small-scale or repair work.
- Adjustable glue flow via a lever mechanism.
These machines use four rollers: two for glue application (top and bottom) and two scraper rollers.
- Equipped with motors, reducers, and chain drives for smooth operation.
- Adjustable roller gaps for different veneer thicknesses.
- Glue supplied via pumps to maintain consistent coverage.
- Safety enclosures and automatic cleaning options available.
Used in industrial settings for high-speed production lines.
- Features large diameter rubber-covered rollers.
- Precise glue thickness control with hand wheels.
- Suitable for water-based PVA and other adhesives.
- Includes safety guards and emergency stop bars.
- Plywood Manufacturing: Even glue application on veneers for strong lamination.
- Furniture Production: Applying adhesive on wood panels for assembly.
- Laminates and Veneers: Ensuring uniform glue coverage for decorative surfaces.
- Packaging Industry: Bonding cardboard or paper layers.
- Uniform Glue Distribution: Prevents weak spots and ensures product durability.
- Glue Consumption Control: Reduces waste by applying only the necessary amount.
- Increased Production Efficiency: Automated spreaders speed up the manufacturing process.
- Safety: Modern machines include safety features to protect operators.
- Versatility: Adjustable settings accommodate various materials and glue types.
- Automatic Cleaning Systems: Brushes and plumbing connections simplify maintenance.
- Glue Transfer Pumps: Maintain consistent glue levels and pressure.
- Safety Enhancements: Suspended flaps and limit switches prevent accidents.
- Ergonomic Designs: For hand-held spreaders, improving operator comfort.
- Material Improvements: Use of synthetic rubber rollers for durability and better glue adherence.
Q1: What types of glue can be used with bottom glue spreaders?
A1: Common adhesives include hot melt glue, PVA (white or yellow), and other water-based or synthetic glues suitable for wood bonding.
Q2: How is the glue thickness controlled in a bottom glue spreader?
A2: By adjusting the gap between the glue rollers and scraper rollers, as well as roller speed.
Q3: Can bottom glue spreaders apply glue to both sides of a veneer simultaneously?
A3: Yes, top and bottom glue spreaders have rollers on both sides to apply glue simultaneously.
Q4: What safety features are included in modern glue spreaders?
A4: Safety enclosures, suspended flaps that trigger stops, limit switches with safety covers, and emergency stop bars.
Q5: How often should glue spreaders be cleaned?
A5: Regular cleaning is recommended after each production run or daily to prevent glue buildup and maintain application quality.
Citations:
[1] https://patents.google.com/patent/CN220559644U/en
[2] https://www.youtube.com/watch?v=x7WF4g0UzHE
[3] https://www.plywoodmachineline.com/How-to-plywood-glue-spreader-pd41016655.html
[4] https://tmcwoodmachinery.com/plywood-glue-spreader-machine-working-principle/
[5] https://plyinsight.com/glue-spreader-a-critical-equipment-in-plywood-manufacturing-one-of-the-ignored-machines/
[6] https://360degreemachinery.com/shop/categories-machine-type/glue-spreader/glue-spreaders-rotary/osama-s4r-top-and-bottom-glue-spreader/
[7] https://patents.google.com/patent/WO2019000894A1/zh
[8] https://ectadhesives.com/wp-content/uploads/2020/04/Hand-held-glue-spreaders_product-data-sheet.pdf
[9] https://www.quickmachinerycompany.com/products/GA/RCGS/17inRCGSspecSheet.pdf
