Polyester film heddle
A polyester film and heald technology, applied in the field of plastic healds, can solve the problems of heavy weight, affect the performance of finished products, low stiffness, etc., and achieve the effects of light weight, easy recycling and good comprehensive mechanical properties
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[0040] Example 1
[0041] The polyester film heald 100 includes two co-extruded surface layers 10 and a core layer 20 located between the two surface layers 10. The components of the surface layer 10 include: PETG, 189.7kg; anti-blocking masterbatch, 32.5kg; color masterbatch , 2.8kg; the components of the core layer 20 include: semi-dull polyester chips, 2115kg; color masterbatch, 120kg; softener, 15kg; the surface layer 10 and the color masterbatch in the core layer 20 It includes polyester chips and pigments, and the semi-matte polyester chips of the core layer 20 contain titanium dioxide.
[0042] The surface layer 10 and the core layer 20 form a composite thick sheet. The composite thick sheet is cast, biaxially stretched, heat-set, and wound to prepare the polyester film with a thickness of 350 μm. After testing, dynamic friction The coefficient is 0.22.
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[0043] Example 2
[0044] The polyester film heald 100 includes two co-extruded surface layers 10 and a core layer 20 located between the two surface layers 10. The components of the surface layer 10 include: PETG, 180.1kg; anti-blocking masterbatch, 20.2kg; color masterbatch , 1.7kg; PTT fiber, 1.4kg; the components of the core layer 20 include: semi-dull polyester chips, 1910kg; color masterbatch, 135kg; softener, 13kg; modified PET elastic agent, 41.2kg; The softening agent is polypropylene, the color masterbatch in the surface layer 10 and the core layer 20 includes polyester chips and pigments, and the semi-matte polyester chips of the core layer 20 contain titanium dioxide.
[0045] The surface layer 10 and the core layer 20 form a composite thick sheet. The composite thick sheet is cast, biaxially stretched, heat-set, and wound to prepare the polyester film with a thickness of 400 μm. After testing, dynamic friction The coefficient is 0.29.
[0046] In a word, the polyester ...
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