Method of making open-ended thermoplastic belting

摘要

A system and method of making an open-ended, reinforced, layered belt having a profile layer, a top layer material, and tensile cords fully encapsulated there between. The method includes engaging portion of the profile layer on a rotatable cylindrical mandrel with an engaging roller, disengaging with a take-off roller, and applying and fusing the cords to the profile layer at a desired cord spacing there between. The cord may be fused by melting the profile layer surface with a heated plow and/or with heated cord. The cord is then covered with the top layer material in a lamination step involving heating to melt at least a portion of the top layer and pressing it to fuse it to the reinforced profile layer. Lamination may be done downstream or directly on the mandrel.

主权项

1. A method of making open-ended, reinforced, layered belting comprising;
providing from a profile supply apparatus a length of profile layer having a top side and having a belt profile other than smooth on the opposite side; engaging a wrap portion of said profile layer in direct contact with a wrap portion of a rotating cylindrical mandrel having a mandrel profile complementary to said belt profile by pressing said profile layer directly onto said mandrel with an engaging roller positioned adjacent said mandrel; providing from a cord feed apparatus multiple tensile cords; applying at a predetermined cord spacing said tensile cords to said profile layer with a cord applicator positioned adjacent said wrap portion of said mandrel so that said cords are firmly attached to said profile layer before disengagement of the carcass portion from the wrap portion of the mandrel thus fusing said cords to the top side of the profile layer in parallel, lengthwise arrangement, forming a reinforced carcass; providing from a top-layer supply apparatus a supply of top layer material; and attaching with a laminator said top layer material to said top side of said reinforced carcass, thereby embedding the tensile cords between said profile layer and said top layer and completing said belting.