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Improvements to press pads

A press pad and extrusion forming technology, applied in the field of press pads, can solve problems such as reducing the heat transfer capacity of the pad

Active Publication Date: 2016-01-20
MARATHON BELTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is also not ideal, as the number of contact points between the warp threads and the press deck in any given surface area of ​​the resulting mat is thereby reduced, which in turn reduces the heat transfer capacity of the mat

Method used

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  • Improvements to press pads
  • Improvements to press pads
  • Improvements to press pads

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0024] As noted above, the elastomeric material used in the production of sheathed wefts for press pads is typically silicone, usually silicone or fluorosilicone, although other elastomeric materials may also be used. The production of weft threads with elastomeric sheaths is generally carried out using a crosshead extruder by extruding the elastomer over an inner core consisting of bundled strands, eg filaments. The bundled strands, including the core, enter through one end into the flow of elastomer and thus pass through a die which controls the shape and thickness of the resulting sheath.

[0025] able to form as Figures 3a to 3e Dies of the cross-sectional configuration shown in , can be readily produced by those skilled in the art, but it should be recognized that the dies do not always reflect the configuration of the weft yarns produced. This is because the silicone flow should be uniform over all parts of the mold. Sharp corners in the die tend to create excessive dr...

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PUM

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Abstract

Press pads for lamination presses are available. The cushion comprises a fabric of woven heat-resistant strands, wherein at least a portion of the wefts (14) comprises an inner core (12) consisting of a bundle of strands (11) within a sheath (9) of elastomeric material, and At least a portion of the warp threads (15) comprise metal strands. The strands ( 11 ) forming the bundle are compacted before extruding the sheath around the strands. Before weaving the press mat fabric, the cross-sectional profile of the sheath (9) is a regular geometry other than circular. Preferably, the cross-sectional shape of the sheath (9) is a spline shape (13), or a regular polygonal shape composed of straight lines or arcs.

Description

technical field [0001] The present invention relates to press mats for use in lamination presses for the production of laminates using low and high pressure single and multi-layer presses for the manufacture of laminates such as decorative laminates, laminate flooring and printed circuit boards, etc. Background technique [0002] The purpose of the press pad is to compensate for density variations in the laminate being pressed and thereby ensure that equal pressure is applied to all parts of the board. In addition, the press pads compensate for any inhomogeneities in the press deck of the press itself as well as deflection or bending of the press deck under pressure. Also, this facilitates the production of flat, uniform density laminates. Therefore, it is important for the press pad to be resilient and rich in natural spring elasticity to allow the press pad to compensate for the aforementioned density variations as well as the non-uniformity of the press table surface, b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B30B15/06D03D15/00D03D15/56
CPCB30B15/061D10B2101/20D10B2401/061D03D15/44D03D15/47D03D15/513D03D15/56D03D15/25D02G3/12B30B15/06
Inventor M·道格拉斯
Owner MARATHON BELTING