CN1687274A - Method and equipment for forming spherical hot-melt adhesive granules - Google Patents
Method and equipment for forming spherical hot-melt adhesive granules Download PDFInfo
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- CN1687274A CN1687274A CN 200510033890 CN200510033890A CN1687274A CN 1687274 A CN1687274 A CN 1687274A CN 200510033890 CN200510033890 CN 200510033890 CN 200510033890 A CN200510033890 A CN 200510033890A CN 1687274 A CN1687274 A CN 1687274A
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Abstract
The present invention relates to a forming method of spherical thermomelting gel granules and its equipment. Said method includes the following steps: firstly, making the moltem thermomelting gel pass through a perforated plate and extruding said molten thermomelting gel into cooling water, the extruding end is made into hemispherical form in the water, using cutter to quickly cut said extruded raw material to make the raw material be formed into granules, under the action of cooling water making the thermomelting gel granules naturally contract into spherical or sphere-like form. Said forming equipment includes machine body, forming chamber in the machine body, rotary cutter mounted in the forming chamber and water-feeding device, etc.
Description
Technical field
The present invention relates to chemical industry adhesives field, the forming method and the device of particularly a kind of spherical (or approximate spherical) hot-melt adhesive granules.
Background technology
Hot melt adhesive is one of important tackiness agent kind, and it is a solid at normal temperatures, needs during use to be coated with after the heat fused, and cooling is promptly solidified.Because advantages such as hot melt adhesive possesses nontoxic, environmental protection, curing is rapid, accumulating is convenient are all very fast in the rate of growth in the China and even the world, Application Areas is also constantly expanded.The hot melt adhesive typical application comprises books unsewn binding, packing, carpenter's furniture, cigarette, engineering etc.
Because hot melt adhesive need melt in the adhesive applicator of special use when using, so hot melt adhesive need be processed in advance, and smaller particles is beneficial to packing, reinforced and quickening burn-off rate in adhesive applicator.The shape that present domestic hot melt adhesive is processed to has the bigger rectangular parallelepiped piece of strip, roundlet cylindrical particle and volume.The production unit of hot melt adhesive mainly is vertical or horizontal slurry formula or ribbon blender, and viscosity was at the following hot melt adhesive product of 20,000 cps when general of these equipment were fit to produce 200 ℃.Method is with these equipment the hot melt adhesive material to be mixed between 90-200 ℃ earlier, gets continuously from die orifice with pump again, after cooling off on cooling or the steel band under water, is cut into sheet or the cylindrical pellet that length is the 2-30 millimeter with cutting knife again.The shortcoming of sheet or cylindrical pellet hot melt adhesive is: 1, the contact area is big between sheet or particle, and intergranular adhesion takes place hot weather easily, causes reinforced difficulty when using, and service efficiency is low; 2, outward appearance is attractive in appearance inadequately.The shortcoming of the block hot melt adhesive of rectangular parallelepiped is that volume is big, and the fusing time of hot melt adhesive is very long during use, influences downstream user's production efficiency.
Summary of the invention
Task of the present invention is the defective that overcomes prior art, a kind of forming method and device of spherical hot-melt adhesive granules are provided, in this way and between the hot-melt adhesive granules produced of device contact area little, be difficult for adhesion, outward appearance shape is attractive in appearance, and is easily reinforced, fusing is fast, the service efficiency height.
The objective of the invention is to be achieved through the following technical solutions:
A kind of forming method of spherical hot-melt adhesive granules, it is characterized in that taking following measure: at first will be molten into liquid hot melt adhesive melt and be extruded in the water coolant continuously through orifice plate, make its extruding end in water, be hemisphere short cylindrical shape, with cutter its quick acting switching-off is formed particle then, it is spherical or approximate spherical that cut hot-melt adhesive granules is punctured into naturally.
The diameter of described orifice plate is 1.5-8mm, and making the particulate diameter of cutting is 1.5-8mm.
The spherical hot-melt adhesive granules shaped device comprises body, it is characterized in that described body is provided with the close forming room of a liquid, and the side in the forming room is provided with the rotary cutter that can advance and retreat, and its shaft extension goes out outside the forming room and links to each other with a driving motor; Relative opposite side in forming room with cutting knife is provided with orifice plate; The feeding mouth of orifice plate stretches out outside the forming room, is used for linking to each other with external forcing machine; Below forming room, be provided with water-in, be used for linking to each other with water feed apparatus and water port, the corresponding with it water outlet that above forming room, is provided with, the hot-melt adhesive granules after flowing water and the moulding can be discharged through this mouthful.
Can produce the spherical hot-melt adhesive granules that diameter is 1.5～8 millimeters a spherical or spheroidal (ellipticity) with forming method of the present invention and device, because contact area minimum between ball and the ball, thereby be difficult for adhesion each other, shape is also good-looking, easily reinforced during use, fusing is fast, the efficient height.
Below in conjunction with accompanying drawing, the present invention is further described.
Description of drawings
Fig. 1 is the structural representation of shaped device of the present invention.
Embodiment
Embodiment:
The forming method of spherical hot-melt adhesive granules: at first hot melt adhesive is molten into liquid (or saying melt) in kneader, then, utilize screw extrusion press that the hot melt adhesive melt is extruded in the forming room 2 of shaped device continuously through orifice plate 4, the water coolant that flows through from bottom to top in the forming room 2 makes its extruding end be hemispherical in water, during to the length set (as: diameter and equal in length), its quick acting switching-off is formed particle with rotary cutter 3.Granular hot melt adhesive can be punctured into spherical or approximate spherical (ellipticity) by nature under the effect of water coolant.Suitable cooling temperature is generally 2-25 ℃, is preferably 8-20 ℃.
In the present embodiment: be provided with the close forming room of liquid 2 in the body 1 of the shaped device of spherical hot-melt adhesive granules.Side in the forming room 2 is provided with rotary cutter 3.The shaft extension of cutting knife 3 goes out outside the forming room 2 and links to each other with a driving motor 5, can advance and retreat automatically at electric time variable control lower cutter 3.Be provided with orifice plate 4 with cutting knife 3 relative opposite sides in forming room 2.It is porose to gather on the orifice plate 4.The aperture of orifice plate 4 is designed as required, is generally 1.5-8mm, and the diameter of the hot-melt adhesive granules of being produced should be 1.5～8 millimeters mutually.The feeding mouth of orifice plate 4 stretches out outside the forming room 2 with external screw extrusion press 6 and links to each other.Be provided with water-in 7 below forming room 2, it links to each other with the water feed apparatus 10 and the water port 11 of water circulating pump and so on through T-valve 9.With the water-in 7 corresponding water outlets 8 that are provided with above forming room 2, the hot-melt adhesive granules after flowing water and the moulding can be discharged through this mouthful.Be finished product after the hot-melt adhesive granules drying of discharging.Water-in 7 is located at body below, and it is very important to the Forming Quality that guarantees product that water outlet 8 is located at the below, than water outlet 8 be located at the below, that water-in 7 is located at the top quality product is far better.Reason is: do not have bubble in the water on the one hand, hot-melt adhesive granules is under water fully; On the other hand, hot-melt adhesive granules is under cold water slug from bottom to top, and what can become is round, and is more approaching spherical.
The usage of T-valve 9 is: 1, before the start or start the time open T-valve 9 earlier forming room 2 communicated with water port, discharge its interior water; 2, screw extrusion press 6 extruded materials are treated in start, and material has been when just having appeared, and crossover tee valve 9 cuts out forming room 2 and water port rapidly, communicates with water-in 7, thereby feed water coolant to forming room 2 in, begins ordinary production.
Claims (6)
1, a kind of forming method of spherical hot-melt adhesive granules, it is characterized in that taking following measure: at first will be molten into liquid hot melt adhesive melt and be extruded in the water coolant continuously through orifice plate, make its extruding end in water, be hemisphere or short cylindrical shape, with cutter its quick acting switching-off is formed particle then, it is spherical or approximate spherical that cut hot-melt adhesive granules is punctured into naturally.
2, according to the forming method of the described spherical hot-melt adhesive granules of claim 1, it is characterized in that the aperture of described orifice plate is 1.5-8mm, making the particulate diameter of cutting is 1.5-8mm.
3, according to the forming method of claim 1 or 2 described spherical hot-melt adhesive granules, it is characterized in that described water coolant is a flowing water, cooling temperature is 2-25 ℃.
4, the shaped device of spherical hot-melt adhesive granules, comprise body (1), it is characterized in that described body (1) is provided with the close forming room of a liquid (2), the side in the forming room (2) is provided with the rotary cutter (3) that can advance and retreat, and its shaft extension goes out outside the forming room (2) and links to each other with a driving motor (5); Relative opposite side in forming room (2) with cutting knife (3) is provided with orifice plate (4); The feeding mouth of orifice plate (4) stretches out outside the forming room (2), is used for linking to each other with external hot melt adhesive melt extruder (6); Be provided with water-in (7) in the below of forming room (2), be used for linking to each other with water feed apparatus (10) and water port (11), correspondence is provided with water outlet (8) in the top of forming room (2) with it, and the hot-melt adhesive granules after flowing water and the moulding can be discharged through this mouthful.
5,, it is characterized in that gathering in the hole on the described orifice plate (4) according to the described shaped device of claim 4.
6, according to claim 4 or 5 described shaped devices, it is characterized in that also being provided with under the water-in water port, between described water-in (7), water feed apparatus (10) and water port (11), be provided with three-way change-over valve (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510033890 CN1687274A (en) | 2005-04-01 | 2005-04-01 | Method and equipment for forming spherical hot-melt adhesive granules |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510033890 CN1687274A (en) | 2005-04-01 | 2005-04-01 | Method and equipment for forming spherical hot-melt adhesive granules |
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| Publication Number | Publication Date |
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| CN1687274A true CN1687274A (en) | 2005-10-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200510033890 Pending CN1687274A (en) | 2005-04-01 | 2005-04-01 | Method and equipment for forming spherical hot-melt adhesive granules |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101393089B (en) * | 2007-09-19 | 2011-01-19 | 同济大学 | Cementation forming device at ideal granule contact point |
| CN112680158A (en) * | 2020-12-24 | 2021-04-20 | 武汉路圣材料科技有限公司 | Preparation method of composite polymer adhesive for permeable pavement |
-
2005
- 2005-04-01 CN CN 200510033890 patent/CN1687274A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101393089B (en) * | 2007-09-19 | 2011-01-19 | 同济大学 | Cementation forming device at ideal granule contact point |
| CN112680158A (en) * | 2020-12-24 | 2021-04-20 | 武汉路圣材料科技有限公司 | Preparation method of composite polymer adhesive for permeable pavement |
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