Woven pin seam in fabric and method
AssigneeJWI Ltd.
InventorDonald G. MacBean
Life of this patent
Estimating the term…
Abstract
The invention relates to a woven all-synthetic monofilament dryer fabric for use in a paper-making machine. The fabric is constituted by a belt woven with warp and weft strands with the warp strands extending in the machine direction. The belt is interconnected at opposed ends by a woven single pintle pin seam to form an endless belt. The warp strands in at least rewoven end portions of the belt are flattened strands.
Claims17
A woven all-synthetic monofilament dryer fabric for use in a paper-making machine, said fabric being constituted by a belt woven with warp and weft strands with said warp strands extending in the machine direction, there being at least two weft layers and said warp strands being crimped relative to said weft strands in a non-symmetrical pattern, said belt being interconnected at opposed ends by a woven single pintle pin seam formed by reversely turned warp strands to constitute an endless belt, said warp strands in at least re-woven end portions of said belt being flattened strands with the original crimp configuration being changed in reversely turned portions of said reversely turned warp strands.
A method of making a plurality of pintle loops at each end of a woven synthetic monofilament dryer fabric having at least two weft layers and the warp strands are crimped relative to the weft strands in a non-symmetrical mesh pattern and in which the warp strands in at least the area of each said end are flattened, said method comprising the following steps:
- (1) removing a predetermined number of weft strands from an area at the end of the fabric and leaving a plurality of projecting warp strands each pre-crimped in the non-symmetrical configuration of the crimp pattern of the fabric,
- (2) selecting pairs of projecting warp strands to form in turn, but not in sequence, retaining loops and pintle loops,
- (3) looping and weaving back into a group of added crimped weft strands, without regard to the prior crimp configuration already existing in the warp strand, one of each selected pair of projecting warp strands;
- the other of each pair being woven part way into the added crimped weft strands of the group to meet the looped strand at a predetermined location within the group of added crimped weft strands thus forming retaining loops and pintle loops at a re-woven end portion of the fabric, said retaining loops being uniform in tightness and said pintle loops being uniform in size.
Dependencies are inferred from the claim text.