Apparatus and method for melting and supplying thermoplastic material to a dispenser

A technology of thermoplastic materials and plastic materials, which is applied to the device and coating of the surface coating liquid, which can solve the problems of no thermal conductivity of the tank wall and reduced material flow rate, etc.

CN1775377AInactive Publication Date: 2006-05-24NORDSON CORP
0 Cites 9 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2006-05-24
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

Apparatus and methods for melting and supplying thermoplastic material to a dispenser. The apparatus includes a tank having at least one side wall for receiving a solid or semi-solid thermoplastic material and a base member supporting the at least one side wall, the base member for heating and melting the thermoplastic material. The base member has a heated upper surface sloping downwardly toward the one or more side walls for directing the flow of molten material and is configured to provide a collection for receiving molten material groove. A filter element is positioned above this collection trough to filter the molten material. The filter is adapted to support remaining solid or partially cured thermoplastic material over a portion of the heated upper surface and provide a less restricted flow path for the molten material to the collection tank.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The present invention relates generally to thermoplastic material melting techniques, and more particularly to an apparatus and method for melting and supplying a hot melt adhesive to a dispenser. Background technique

[0002] Hot melt adhesives, such as those used in the manufacture of disposable diapers, packaging, and other products, are generally formed from solid or semi-solid sheets of thermoplastic material that are melted prior to use. Thermoplastic materials are available in large quantities in solid forms such as chicklets, pellets, pillows, and bricks, and can be converted to a molten state in tanks having sidewalls and heated bottom or base portions.

[0003] The thermoplastic material is typically maintained in a molten state within the tank in a volume sufficient to supply one or more applicators or dispensers. If a large volume of hot melt material is required for application, a sufficiently large volume of thermoplastic material must b...

Examples

Embodiment Construction

[0022] refer to figure 1 , the exemplary hot melt adhesive system 10 includes a heating apparatus, more specifically a melting apparatus 20 constructed in accordance with the principles of the present invention. The apparatus 20 includes: a tank 22 having a removable cover or lid 24 for receiving and containing thermoplastic material 26 in solid, semi-solid and liquid forms; a manifold assembly 28 connected to the tank 22; and a control unit 30 . As will be discussed in greater detail below, the tank 22 includes a base member 32 that melts the thermoplastic material 26 to form a molten liquid adhesive 34 . Pump 36 connected to manifold assembly 28 pumps liquid adhesive 34 from tank 22, through fluid passage 38, and into manifold assembly 28, where liquid adhesive 34 may be divided into separate flows . The manifold assembly 28 has outlets 40 that may be equipped with heated hoses 42 for supplying the liquid adhesive 34 to one or more dispensers 44 , 46 . The dispensers 44,...