Process for producing tack-free hotmelt material and device for producing the same
AssigneeOrganik Kimya Sanayi Ve Tic. A.S.
InventorsViktor BENBANASTE, Filiz ÖZTÜRK, Oguzhan CALIK, Mahmut ALPER ER
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Abstract
The present invention relates to a process for producing a hot melt adhesive (HMA) material, preferably hot melt pressure sensitive adhesive (HMPSA) material, having a substantially tack-free coating comprising a novel moulding and spraying step, wherein said HMA material, preferably HMPSA material, can be easily handled, packed and transported for further use. In addition, the present invention relates to a corresponding device for producing a hot melt adhesive (HMA) material, preferably hot melt pressure sensitive adhesive (HMPSA) material, having a substantially tack-free coating.
Claims19
A process for producing a hot melt adhesive (HMA) material having a coating, wherein the coating has a tack-free property up to 50° C., the process comprising:
- moulding cold HMA granules into a solid, moulded block of agglomerated HMA granules, wherein the moulded block has a truncated cone shape;
- and
- spraying a liquid or molten coating material at least partially to a top, bottom and lateral surfaces of the moulded block.
A device for producing a hot melt adhesive (HMA) material having a coating, wherein the coating has a tack-free property up to 50° C., the device comprising moulding means for moulding HMA granules into a truncated cone-shaped block of agglomerated HMA granules, and spraying means for applying a coating material present in liquid or molten form at least partially to the surface of the block of agglomerated HMA granules present in solid form.
Dependencies are inferred from the claim text.